JP4501692B2 - Halogen-containing fuel conversion system in cement manufacturing facility and cement manufacturing method using halogen-containing fuel conversion system - Google Patents

Description

  The present invention relates to a halogen-containing fuel conversion system in a cement manufacturing facility that uses a halogen-containing material containing halogen such as chlorine as a fuel and uses the fuel as a part of fuel in the cement manufacturing facility, and a method of manufacturing cement using the system. Is.

  As is well known, various plastics are used as various beverage containers, recording tapes, automobile tires, and the like. These plastics are disposed of as a large amount of industrial waste after use, but in recent years, a method of incinerating the waste has been adopted due to the limit of landfill treatment.

  By the way, combustible wastes such as the plastics generate a predetermined amount of heat by incineration. In view of this, there has been implemented a treatment method in which the combustible waste is put into a rotary kiln in a cement production facility and fired, and at the same time, the heat generated at that time is used as part of the fuel for cement production.

  At this time, if the above flammable waste is directly put into the kiln bottom part of the rotary kiln or the rising duct provided in the preceding stage, the amount of heat at the time of incineration can be used for preheating the cement raw material, This does not contribute to the firing of the cement raw material. Further, when the combustible waste contains a lot of moisture, the heat of vaporization lowers the exhaust gas temperature at the input location, which may hinder stable operation.

As a prior art for solving such problems, for example, a waste treatment apparatus for cement firing described in Patent Document 1 below has been proposed.
This waste treatment apparatus includes an externally heated kiln that generates dry distillation gas by dry distillation with a high-temperature gas before putting combustible waste such as plastic into the rotary kiln, and a high-temperature chlorine bypass gas generated in the rotary kiln. A high-temperature gas supply device that supplies high-temperature gas mixed with low-temperature cooler exhaust gas to the external heating kiln, and a dry distillation gas supply line that supplies dry distillation gas generated in the external heating kiln to the burner of the rotary kiln. Is.

According to the waste treatment apparatus having the above-described configuration, since the dry distillation gas generated in the external heating kiln is supplied to the burner of the rotary kiln, the main fuel of the kiln corresponding to the calorific value can be reduced. The dry-distilled ash treated with the external heat kiln has an advantage that adverse effects due to chlorine and moisture can be avoided because it is not supplied to cement burning equipment.
JP 2002-195524 A

  However, in the conventional waste treatment apparatus, when the combustible waste is a plastic having a high chlorine content such as polyvinyl chloride (PVC), the chlorine content is reduced by dry distillation in an external heating kiln. Since most of it moves to dry distillation gas, if it is used as a fuel for a rotary kiln, chlorine is concentrated in the cement firing equipment including the rotary kiln and clogged in the preheater, which adversely affects operations. is there.

  In general, cement production facilities are provided with a chlorine bypass system that extracts a part of the exhaust gas and removes chlorine content in order to avoid the concentration of chlorine by circulating in the facility. In addition, there is no ability to remove chlorine separately introduced from the dry distillation gas, which causes a problem that the amount of waste treated or the chlorine content in the waste is significantly limited.

  Further, this type of cement manufacturing facility is a huge plant having a rotary kiln having a length of about 100 m, whereas in the waste treatment apparatus, the upper part of the rotary kiln in front of the kiln is used as a heat source for the external heating kiln. Because it uses a mixture of high-temperature gas from the chlorine bypass installed in the furnace and low-temperature exhaust gas from the cooler installed on the kiln bottom side of the rotary kiln, the piping as a whole becomes extremely long. There is a problem that the apparatus becomes large and complicated.

  In addition, plastic wastes with low chlorine content such as polyethylene (PE) and polypropylene (PP) have a high calorific value per se. However, in the above waste treatment equipment, dry-distilled ash is put into cement burning equipment. Since it is not introduced, sufficient energy cannot be reused from the waste, and secondary waste called dry distillation ash that still needs to be processed is generated.

  The present invention has been made in view of the above circumstances, and halogen-containing materials such as flammable waste containing chlorine can be obtained without causing any harmful effects caused by halogens such as chlorine and bromine contained in the halogen-containing materials. It is an object of the present invention to provide a halogen-containing fuel conversion system in a cement manufacturing facility that can effectively use the calorific value as a part of cement manufacturing fuel, and a cement manufacturing method using the system.

In order to solve the above-mentioned problem, the invention according to claim 1 is characterized in that a halogen-containing material containing chlorine is divided into a halogen-containing material having a low chlorine concentration depending on the chlorine content, and a halogen-containing material having a higher chlorine content. combustible gas comprising a sorting device for separating, the above-mentioned halogen-containing material is often chlorine content separated by sorting device is introduced, using heat the halogen by separating the halogen from the halogen-containing compound to the And a halogen separation means for generating a residue, a heat medium supply line for supplying the halogen separation means with a heat medium taken out from the cement production facility, and the halogen from the combustible gas discharged from the halogen separation means. A halogen recovery means for recovering the flammable gas after the halogen is recovered by the halogen recovery means; And it is characterized in by comprising a gas supply means for supplying a fuel for forming equipment.

  The invention described in claim 2 is characterized in that in the invention described in claim 1, there is provided residue supply means for supplying the residue as fuel for the cement manufacturing facility.

  Here, in the invention according to claim 3, the halogen-containing material is combustible waste containing chlorine, and the halogen separating means thermally decomposes the combustible waste containing chlorine by indirect heating. The pyrolysis means generates the combustible gas containing chlorine and the residue containing oil and / or solids.

  The invention according to claim 4 is the invention according to any one of claims 1 to 3, wherein the cement manufacturing facility cools a cement kiln for firing a cement raw material and a clinker obtained by the cement kiln. The heat medium supply line supplies air heated in the clinker cooler as the heat medium, and returns the air exhausted from the halogen separation means to the clinker cooler. A return line is provided.

  Furthermore, the invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the halogen separating means burns a part of the combustible gas to provide a heat source for the halogen separating means. An auxiliary heating means to be supplied as a part is provided.

  Next, the invention according to claim 6 is a method for producing cement using the halogen-containing fuel conversion system according to any one of claims 1 to 5, wherein the cement production facility is provided with a cement kiln before the kiln. When the clinker is manufactured by firing the cement raw material by the burner provided, the combustible gas after the halogen is recovered by the halogen recovery means is supplied as fuel to the cement manufacturing facility. It is what.

In this case, the invention described in claim 7 is characterized in that the residue is used as a fuel for the cement production facility.
The invention according to claim 8 is the invention according to claim 6 or 7, wherein the cement manufacturing facility that uses a combustible gas as a fuel is provided in the cement kiln and in front of the cement kiln. While being a generator of a calcining furnace or the said cement manufacturing equipment, the said cement manufacturing equipment which uses the said residue as a fuel is the said cement kiln or the said calcining furnace, It is characterized by the above-mentioned.

  Furthermore, in the invention described in claim 9 according to the invention described in claims 6-8, when the halogen is separated from the halogen-containing material by using a heat medium in the halogen separating means, the halogen-containing material is transferred to the halogen-containing material. The invention according to claim 10 is the invention according to any one of claims 6 to 9, wherein the halogen separation means is contained in the halogen separation means. The present invention is characterized in that an adhesion preventing material for preventing adhesion is supplied.

  According to the halogen-containing material fuelization system in the cement production facility according to any one of claims 1 to 5 and the cement production method according to any one of claims 6 to 10 using the same, by the halogen separation means, By separating the halogen from the halogen-containing material containing halogen such as chlorine and bromine using heat, a flammable gas containing the halogen and a residue are generated.

  And about the said combustible gas, after it is set as the combustible gas from which halogens, such as a chlorine content and a bromine content, were removed in the halogen collection | recovery means, it is supplied as a fuel of cement manufacturing equipment by a gas supply means.

Furthermore, in the invention according to claim 2 or 7, the residue is also supplied as a part of the fuel to the cement manufacturing facility by the residue supply means.
As a result, the calorific value of the inclusions containing various halogens can be effectively utilized as a part of the cement production fuel without causing harmful effects caused by halogens such as chlorine and bromine contained therein.

  In particular, according to the invention described in claim 3, when the halogen-containing material is a combustible waste containing chlorine, the combustible waste is thermally decomposed by a thermal decomposition means, and hydrogen chloride and mainly hydrocarbons are obtained. A pyrolysis gas composed of a combustible gas and a residue containing an oil component corresponding to the pyrolysis temperature is generated.

  And about the said pyrolysis gas, after the said chlorine content is removed in the halogen collection | recovery means and it is made a combustible gas, it is supplied as a fuel of cement manufacturing equipment by a gas supply means. On the other hand, the residue can also be supplied as fuel into the cement kiln by the residue supply means.

  As a result, combustible waste containing chlorine can be incinerated smoothly in a cement production facility, and the calorific value of the fuel for cement production can be reduced without causing any harmful effects caused by chlorine contained in the waste. It can be used effectively as a part. In addition, since the thermal decomposition of the waste is performed by indirect heating in the thermal decomposition means, the above-described effects can be obtained by supplying the minimum heat medium necessary for desalting the waste.

  In addition, according to the fourth aspect, air heated in a clean clinker cooler in a cement production facility is supplied as a heat medium for the halogen separation means. Even when a thermal decomposition means such as a tube heater is used, it is possible to suppress the occurrence of problems such as blockage of the heat medium flow path as much as possible.

  Furthermore, since the air extracted from the clinker cooler and supplied to the halogen separation means via the heat medium supply line is returned to the clinker cooler via the return line, the air sent from the clinker cooler into the cement kiln. There will be no significant fluctuations in the flow.

  In addition, air from the clinker cooler is circulated and supplied as a heat source to a halogen separation means such as a pyrolysis means, and the pyrolysis residue is supplied as fuel in the cement kiln. Equipment and piping can be centrally arranged on the front side of the kiln of the cement kiln, so that the entire system can be reduced in size and simplified.

  At this time, since the air in the clinker cooler is gradually heated by cooling the clinker discharged from the rotary kiln, the air supplied from the clinker cooler to the halogen separation means is discharged from the clinker cooler. Is selected, and a part of the exhaust gas from the clinker cooler and a part of the secondary air sent into the cement kiln are sent to the range of about 250 ° C. to 900 ° C. necessary for the separation of the halogen such as pyrolysis. It is possible to supply air.

  Therefore, it is possible to perform separation of the desired halogen in the halogen separation means only with the air supplied from the clinker cooler. However, as in the invention according to claim 5, the halogen separation means can contain the combustible gas. If auxiliary heating means is provided that burns a part and supplies it as a part of the heat source of the halogen separation means, the above-mentioned air of 250 ° C. or lower is supplied from the clinker cooler to the halogen separation means, or the halogen containing to be processed Even when the amount of the product increases, it becomes possible to perform a desired halogen separation.

  According to the invention described in claim 9, since a heat transfer member such as a steel ball is mixed in the halogen-containing material in the halogen separation means, the halogen separation efficiency such as thermal decomposition efficiency is improved even by indirect heating. It becomes possible to make it.

  Furthermore, according to the invention described in claim 10, even when, for example, a rotary kiln type external heat pyrolysis furnace or the like is used as the halogen separating means, the halogen-containing material such as the waste is externally heated by the adhesion preventing material. It is possible to prevent the halogen from adhering to the inner wall of the type pyrolysis furnace and perform a smooth halogen separation operation.

(First embodiment)
FIG. 1 shows a first embodiment of a waste fueling system in a cement manufacturing facility in which the halogen-containing fueling system in a cement manufacturing facility according to the present invention is applied when the halogen-containing material is flammable waste containing chlorine. A form is shown and the code | symbol 1 in a figure is the cement kiln for baking a cement raw material.

  The cement kiln 1 is a rotary kiln provided so as to be rotatable about an axis, and a preheater 2 for preheating cement raw material is provided on the left side of the kiln bottom 1a in the figure, and the right side in the figure. 1b is provided with a main burner (not shown) for heating the inside. Further, a clinker cooler 3 for cooling the clinker obtained by the cement kiln 1 is provided in the front of the kiln 1b.

The cement production facility having the cement kiln 1, the preheater 2 and the clinker cooler 3 is provided with a waste fueling system for pretreating flammable plastic waste containing chlorine and introducing it into the cement kiln 1. ing.
Reference numeral 4 in the figure is a sorting device provided on the most upstream side of the waste fueling system. The sorting device 4 is a waste containing a large amount of chlorine such as polyvinyl chloride or polyvinylidene chloride (hereinafter, abbreviated as chlorine-containing plastic). And wastes with low chlorine content such as polyethylene and polypropylene (hereinafter abbreviated as low chlorine concentration plastics).

  Here, as a sorting standard in the sorting apparatus 4, it is suitable that the chlorine content is sorted into 1000 ppm, preferably 500 ppm or more, and less. Then, the low chlorine concentration plastic separated by the sorting device 4 is directly fed into the cement kiln 1 from the front side 1b of the cement kiln 1 through the waste fuel supply line 5. On the other hand, the chlorine-containing plastic separated by the sorting device 4 is introduced from a thermal decomposition line 6 into a subsequent thermal decomposition furnace (halogen separation means, thermal decomposition means) 7.

  The pyrolysis furnace 7 is a rotary kiln type external heat pyrolysis having an outer cylinder 7a into which a heat medium is introduced and an inner cylinder 7b which is provided rotatably around an axis and is supplied with chlorine-containing plastic. It is a furnace, and the pyrolysis line 6 is connected to one end side of the inner cylinder 7b. In addition, a connecting port 8 for supplying an adhesion preventing material to the inside is connected to the connecting portion.

  Here, as the adhesion preventing material, soil material such as clay, paper material, wood, plastic film and the like can be applied. At this time, if waste such as sewage sludge, construction waste wood or waste plastic film is used instead, it is possible to simultaneously treat these wastes. In addition, as other adhesion preventing materials, cement raw materials, oil coke ash, and the like can be used. At this time, if it is in a coarse powder form, it can function as a support for the waste, and if it is a fine powder, it can function as a powdery cover for the waste.

  A transfer line (residue supplying means) 9 is provided on the other end side of the inner cylinder 7b of the pyrolysis furnace 7 to supply the pyrolysis residue generated in the pyrolysis furnace 7 as fuel into the cement kiln 1. ing. Furthermore, a cracked gas extraction line 11 for sending the pyrolysis gas generated in the pyrolysis furnace 7 to a subsequent gas cleaning device (halogen recovery means) 10 is connected to the upper portion of the inner cylinder 7b.

  The gas cleaning device 10 is configured to bring an alkali component such as calcium hydroxide added from the supply pipe 10a into contact with the pyrolysis gas discharged from the pyrolysis furnace 7 so that the chlorine content contained in the pyrolysis gas is reached. Is removed from the pyrolysis gas as a salt such as calcium chloride, and various types of wet or dry gas scrubbers are applicable. Here, reference numeral 10b in the figure is a discharge pipe for the calcium chloride aqueous solution and the like, and reference numeral 10c is a return pipe for returning the pyrolysis gas containing unreacted alkali components to the inlet of the gas cleaning apparatus 10.

  A gas supply line for supplying the combustible gas cleaned by the gas cleaning device 10 to the inside from the auxiliary burner 1c provided on the front side of the kiln 1 of the cement kiln 1 is provided on the discharge side of the gas cleaning device 10. (Gas supply means) 12 is connected. The combustible gas may be mixed with fuel and supplied to the inside in a main burner (not shown) of the cement kiln 1.

  On the other hand, one end side of the outer cylinder 7a of the pyrolysis furnace 7 is connected to a heat medium supply line 13 for supplying air having a temperature increased (300 ° C.) or higher in the clinker cooler 3 as a heat medium. A return line 14 for returning the air exhausted from the pyrolysis furnace 7 to the clinker cooler 3 is connected to the other end of the outer cylinder 7a of the pyrolysis furnace 7.

Next, an embodiment of a cement manufacturing method according to the present invention using a waste fueling system in a cement manufacturing facility having the above-described configuration will be described.
First, the cement raw material preheated in the preheater 2 and partially calcined is introduced into the cement kiln 1 from the kiln bottom 1a as indicated by the dotted arrows in the figure. Then, in the process of being gradually sent from the kiln bottom 1a side to the kiln front 1b side in the cement kiln 1, it is heated and burned by the combustion exhaust gas from the main burner to become a clinker.

Next, the clinker that has reached the kiln front 1b falls into the clinker cooler 3 and is sent to the right in the figure as indicated by the dotted arrow in the figure. At this time, the air is cooled to a predetermined temperature by the air supplied into the clinker cooler 3 and finally taken out from the clinker cooler 3.
Further, the air heated by cooling the clinker in the clinker cooler 3 is introduced into the cement kiln 1 as secondary air for combustion such as a main burner and further used as a heat source for the preheater 2 as exhaust gas. The

  In parallel with the above cement clinker production, combustible waste to be treated containing chlorine-containing plastics is put into the sorting device 4 and separated into chlorine-containing plastics and other wastes such as low chlorine concentration plastics. . And about a low chlorine concentration plastic, it directly burns in the cement kiln 1 by throwing in the cement kiln 1 from the front 1b side of the kiln 1 through the waste fuel supply line 5 as a part of the fuel. Use.

  On the other hand, the chlorine-containing plastic separated by the sorting device 4 is introduced into the thermal decomposition furnace 7 at the subsequent stage from the thermal decomposition line 6, so that air is heated in the clinker cooler 3 supplied from the heat medium supply line 13. Pyrolyzed. As a result, the pyrolysis furnace 7 is mainly composed of pyrolysis gas composed of hydrogen chloride and a combustible gas mainly containing hydrocarbons, and carbide from which most of the chlorine has been removed, depending on the pyrolysis temperature. And a pyrolysis residue containing the oil produced. At this time, the adhesion preventive material supplied from the inlet 8 prevents the chlorine-containing plastic from adhering to the inner wall of the pyrolysis furnace 7.

  In addition, it is desirable to perform the said thermal decomposition in the range whose maximum temperature is 250 to 650 degreeC. At this time, if the pyrolysis is performed at a relatively low temperature within the above range, the pyrolysis gas has a relatively small calorific value, but a large amount of carbon remains in the pyrolysis residue, and the calorific value increases. . On the other hand, if it is carried out at a relatively high temperature, the calorific value of the pyrolysis gas increases, but conversely, the combustible content in the pyrolysis residue decreases and the amount of oil generated increases.

  Then, the pyrolysis residue and oil are supplied into the cement kiln 1 by the transport line 9 and are similarly used as a part of the fuel. Further, the pyrolysis gas is made into a combustible gas from which chlorine has been removed in the gas cleaning device 10 and then supplied from the auxiliary burner 1c into the cement kiln 1 through the gas supply line 12 and used as part of the fuel. To do.

  In this way, combustible waste containing chlorine can be incinerated smoothly in a cement production facility, and its calorific value can be reduced without producing harmful effects caused by chlorine contained in the waste. It can be used effectively as part of the fuel.

  In addition, the separation device 4 provided in the front stage of the thermal decomposition means separates waste with a high chlorine content such as polyvinyl chloride and polyvinylidene chloride and waste with a low chlorine content such as polyethylene and polypropylene, Since only the waste containing a large amount of chlorine is sent from the pyrolysis line 6 to the pyrolysis furnace 7 for pyrolysis treatment, the pyrolysis furnace 7 and gas cleaning device including the amount of high-temperature air to be supplied to the pyrolysis furnace 10 can be reduced, and the amount of waste that can be treated in the cement production facility can be increased.

(Second Embodiment)
FIG. 2 is a diagram for explaining a second embodiment of the present invention, and the same components as those shown in FIG.
In this waste fueling system, a steel ball (heat transfer member) having a diameter of 1 mmφ or more is supplied into the pyrolysis furnace 7 from the charging port 8 together with the adhesion preventing material.

  Then, in the subsequent stage of the pyrolysis furnace 7, the pyrolysis residue and the steel ball sent from the transfer line 9 are cooled to 100 ° C. or less, and the pyrolysis residue and the steel ball are rotated around the axis. A rotary kiln type cooling pulverization apparatus 20 for pulverizing the thermal decomposition residue is installed.

  Further, a sieve 21 for separating the pyrolysis residue pulverized to 1 mmφ or less is provided at the bottom of the cooling pulverizer 20, and the pyrolysis residue that has passed through the sieve 21 is supplied to the cement kiln 1 from the conveying line 9. It has come to be. Further, a discharge line 22 for discharging the steel balls separated by the sieve 21 is provided at the lower part of the cooling and grinding device 20.

  In the waste fuel conversion system configured as described above and the cement manufacturing method using the same, in addition to the one shown in the first embodiment, when pyrolyzing the chlorine-containing plastic in the pyrolysis furnace 7, Since steel balls are mixed in this, the chlorine-containing plastic can be directly heated by the heated steel balls. For this reason, thermal decomposition efficiency can be improved also by indirect heating.

  Moreover, the thermal decomposition residue sent from the conveyance line 9 is cooled to 100 ° C. or less by a rotary kiln type cooling and pulverizing device 20 provided at the subsequent stage of the thermal decomposition furnace 7 and pulverized by a steel ball. And the thermal decomposition residue grind | pulverized to 1 mmφ or less is isolate | separated by the sieve 21 provided in the bottom part of this cooling crushing apparatus 20, and it supplies to the cement kiln 1 from the conveyance line 9. FIG.

Therefore, the pyrolysis residue is first cooled by the cooling and pulverizing apparatus 20 to facilitate the fragmentation process, and the pyrolysis residue subdivided to 1 mmφ or less is put into the cement kiln 1. Such handling and incineration in the cement kiln 1 are facilitated.
The steel balls discharged from the discharge line 22 can be circulated and reused by supplying them again to the pyrolysis furnace 7 from the inlet 8.

(Third embodiment)
FIG. 3 is a diagram for explaining a third embodiment of the present invention. Similarly, the same components as those shown in FIGS. 1 and 2 are denoted by the same reference numerals to simplify the description. .
In the waste fuel conversion system of this embodiment, the sorting device 4 shown in the first and second embodiments is not provided, and as a result, both the chlorine-containing plastic and the low chlorine concentration plastic are pyrolyzed. 7 is introduced.

  The pyrolysis furnace 7 is provided with an auxiliary heater (auxiliary heating means) 30. The auxiliary heater 30 is connected to a branch pipe 31 of a gas supply line 12 that sends combustible gas from the gas cleaning device 10 to the cement kiln 1 as fuel. The high-temperature gas generated by burning a part of the combustible gas in the auxiliary heater 30 is supplied from the auxiliary heating line 32 into the outer cylinder 7a of the pyrolysis furnace 7. Yes.

  According to the waste fuel conversion system of the present embodiment and the cement manufacturing method using the waste fuel conversion system, both the chlorine-containing plastic and the low chlorine concentration plastic are introduced into the pyrolysis furnace 7 without sorting. When the waste to be included contains a large amount of chlorine-containing plastic, the whole system can be simplified, which is preferable.

  In addition, since an auxiliary heater 30 is provided in the pyrolysis furnace 7 to burn a part of the combustible gas and supply it as a part of the heat source of the pyrolysis furnace 7, it is supplied from the clinker cooler to the pyrolysis furnace 7. When the amount and temperature of the hot air to be used are insufficient, the desired amount of heat can be supplemented by the auxiliary heater 30 to perform desired thermal decomposition.

  In each of the first to third embodiments, only the case where the halogen-containing material is a combustible waste containing chlorine has been described. However, the present invention is not limited to this. The same can be applied to other halogen inclusions.

  In addition, the description has been given only of the case where the combustible gas from which the chlorine content is removed from the pyrolysis gas is supplied as a part of the fuel into the cement kiln 1, but the present invention is not limited to this. It is also possible to supply it as a fuel to the generator of the cement production facility after filling it.

  Further, in the cement production facility in which the calcining furnace is provided in the previous stage of the cement kiln 1, part or all of the pyrolysis residue discharged from the pyrolysis furnace 7 is replaced with the cement kiln 1. You may utilize as a part of fuel of the said calcining furnace by supplying to the said calcining furnace and burning.

  Further, the cooling fragmentation means in the latter stage of the pyrolysis furnace 7 shown in the second and third embodiments is not limited to the rotary kiln type cooling pulverization apparatus 20 that pulverizes the pyrolysis residue using a steel ball. Other subdividing means such as a shearing type crusher such as a shredder or a mortar type crusher such as a crusher may be used depending on conditions, plastic properties, and the like.

It is a schematic block diagram which shows 1st Embodiment of the halogen-containing material fuelization system in the cement manufacturing equipment which concerns on this invention. It is a schematic block diagram which shows 2nd Embodiment as the same. It is a schematic block diagram which shows 3rd Embodiment same as the above.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cement kiln 1a Kiln bottom 1b In front of kiln 2 Preheater 3 Clinker cooler 4 Sorting device 5 Waste fuel supply line 6 Pyrolysis line 7 Pyrolysis furnace (halogen separation means, pyrolysis means)
8 Loading port for adhesion prevention material 9 Conveyance line (residue supply means)
10 Gas cleaning device (halogen recovery means)
12 Gas supply line (gas supply means)
13 Heating medium supply line 14 Return line 30 Auxiliary heater (auxiliary heating means)
31 Branch piping of gas supply line

Claims (10)

A sorting device that separates a halogen-containing material containing chlorine into a low chlorine-concentrated halogen-containing material and a halogen-containing material having a higher chlorine content than the above-mentioned chlorine content;
The above halogen-containing material is often chlorine content separated by sorting device is introduced, to produce a residue and combustible gas containing the halogen by using heat to separate the halogen from the halogen-containing compound Halogen separation means;
A heating medium supply line for supplying the heating medium taken out from the cement manufacturing facility to the halogen separation means;
Halogen recovery means for recovering the halogen from the combustible gas discharged from the halogen separation means;
A gas supply means for supplying the combustible gas after the halogen is recovered by the halogen recovery means as a fuel for the cement manufacturing facility;
A halogen-containing material fueling system in a cement manufacturing facility.   The halogen-containing fuel conversion system for a cement production facility according to claim 1, further comprising residue supply means for supplying the residue as a fuel for the cement production facility. The halogen-containing material is flammable waste containing chlorine,
The halogen separation means thermally decomposes the flammable waste containing chlorine by indirect heating to generate the flammable gas containing chlorine and a residue containing oil and / or solids. The halogen-containing material fueling system in a cement manufacturing facility according to claim 1 or 2, wherein The cement manufacturing facility comprises a cement kiln for firing cement raw material, and a clinker cooler for cooling the clinker obtained by the cement kiln,
The heat medium supply line is provided with a return line for supplying air heated in the clinker cooler as the heat medium and returning the air exhausted from the halogen separation means to the clinker cooler. The halogen-containing fuel conversion system in a cement manufacturing facility according to any one of claims 1 to 3.   5. The auxiliary heating means provided in the halogen separating means is provided with auxiliary heating means for burning a part of the combustible gas and supplying it as a part of a heat source of the halogen separating means. A halogen-containing material fueling system in a cement manufacturing facility according to claim 1. A method for producing cement using the halogen-containing fuel conversion system according to any one of claims 1 to 5,
When the clinker is produced by firing the cement raw material by a burner provided in front of a cement kiln in the cement production facility, the combustible gas after the halogen is recovered by the halogen recovery means, A method for producing cement using a halogen-containing fuel conversion system, characterized in that the fuel is supplied to a cement production facility.   The said residue is used as a fuel of the said cement manufacturing equipment, The manufacturing method of the cement using the halogen-containing fuel conversion system of Claim 6 characterized by the above-mentioned.   The cement production facility that uses the combustible gas as a fuel is a calciner or a generator of the cement production facility that is provided in the cement kiln or in front of the cement kiln, and the residue as a fuel. The said cement manufacturing equipment to be used is the said cement kiln or the said calcining furnace, The cement manufacturing method using the halogen-containing material fuelization system of Claim 6 or 7 characterized by the above-mentioned.   9. The halogen according to claim 6, wherein a heat transfer member is mixed into the halogen-containing material when the halogen is separated from the halogen-containing material using a heat medium in the halogen separating means. Cement manufacturing method using inclusion fueling system.   10. The halogen-containing fuel conversion system according to claim 6, wherein an adhesion preventing material for preventing the halogen-containing material from adhering to the halogen separating means is supplied to the halogen separating means. Cement production method using

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