JP5777301B2 - Oil residue fuel supply apparatus and method - Google Patents

Description

  The present invention relates to a fuel supply apparatus and method for petroleum residue that can supply a petroleum residue taken out as a fuel for a furnace after refining crude oil to produce fuel oil or petrochemical products.

  By refining crude oil with a petroleum refining facility, fuel oil, petrochemical products, etc. are manufactured, and then petroleum residues are taken out from this facility. Since this petroleum residue is solidified at room temperature, when using it as energy, the petroleum residue in a high temperature state is transferred to a furnace using piping while being heated with steam, It is heated to a combustible temperature before being fed into the furnace.

  In recent years, petroleum residues have become heavier, and petroleum residues need to be heated to a temperature range exceeding 350 ° C before being supplied into the furnace, which exceeds the handling temperature of petroleum refining facilities. May cause coking adhesion problems. For this reason, light oil is mixed with petroleum residue, which is a high-temperature fluid taken out from a petroleum refining facility, and transported as a fluid throughout, but this is disadvantageous in terms of cost.

  As a solution to such a problem, for example, there are those described in Patent Documents 1 and 2 below. In the method for producing the solvent removal residue water slurry described in Patent Document 1, the solvent removal residue is pulverized with water and a dispersing agent to form a slurry, and then the stirring is continued to stabilize the slurry. An appropriate amount of water-soluble polymer or inorganic fine powder is added as a thickener. Further, in the method and apparatus for supplying petroleum residue described in Patent Document 2, the petroleum residue is liquefied natural gas is contacted, and the petroleum residue is cooled by using vaporization cold heat that vaporizes the liquefied natural gas to become vaporized natural gas. Solid fuel is obtained by solidification, and the solid fuel is finely pulverized and supplied to the furnace.

JP-A-10-077487 JP 2009-300054 A

  In the conventional petroleum residue fuel supply apparatus described above, the petroleum residue is slurried or solidified and then pulverized and used as fuel. However, such equipment has a problem that a complicated apparatus configuration is required and the manufacturing cost increases.

  The present invention solves the above-described problems, and an object thereof is to provide a fuel supply apparatus and method for petroleum residue that can efficiently use petroleum residue as fuel without increasing the size and complexity of the apparatus. To do.

  In order to achieve the above object, the fuel supply device for petroleum residue of the present invention comprises a mixing device for mixing solidified petroleum residue and heavy oil, and conveying the mixed oil fluidized by mixing with the mixing device to a furnace. And a transporting device.

  Therefore, by mixing the petroleum residue solidified by the mixing device with heavy oil, this petroleum residue can be melted and fluidized, and the mixed oil can be conveyed to the furnace by the conveying device, which increases the size and complexity of the device. The petroleum residue can be efficiently used as fuel without incurring.

  The fuel supply apparatus for petroleum residue according to the present invention is characterized in that a heating device for heating the petroleum residue is provided.

  Therefore, by mixing the solidified petroleum residue with heavy oil and heating it with a heating device, the petroleum residue can be easily melted and fluidized.

  The petroleum residue fuel supply apparatus according to the present invention is characterized in that a crushing device for crushing the petroleum residue is provided.

  Therefore, by pulverizing the solidified petroleum residue with a pulverizer and mixing it with heavy oil, the petroleum residue can be easily melted and fluidized.

  In the petroleum residue fuel supply device of the present invention, the mixing device has a mixing tank, and supplies the petroleum residue pulverized by the pulverizing device to the mixing tank.

  Therefore, by mixing the petroleum residue and heavy oil pulverized by the pulverizer in the mixing tank, the petroleum residue can be easily melted and fluidized.

  In the petroleum residue fuel supply apparatus of the present invention, the mixing device has a mixing pipe, and supplies the petroleum residue pulverized by the pulverizing apparatus to the mixing pipe.

  Therefore, by supplying the petroleum residue pulverized by the pulverizer to the conveying pipe and mixing it with heavy oil, the petroleum residue can be easily melted and fluidized, and the mixing device can be simplified. be able to.

  Also, the fuel supply method for petroleum residue of the present invention comprises a step of heating a solidified petroleum residue taken out from a petroleum refining facility, a step of mixing a molten petroleum residue with heavy oil, and a mixture of petroleum residue and heavy oil. And a step of conveying the fluidized fluid mixture to a furnace.

  Therefore, by mixing the heated petroleum residue with heavy oil, this petroleum residue can be melted and fluidized and transported as a mixed oil to the furnace, and the petroleum residue can be efficiently used without increasing the size and complexity of the equipment. In particular, it can be used as fuel.

  Further, the fuel supply method for petroleum residue according to the present invention includes a step of pulverizing a petroleum residue taken out from an oil refining facility and solidified, a step of mixing the pulverized petroleum residue with heavy oil, and a mixture of petroleum residue and heavy oil. And a step of conveying the fluidized fluid mixture to a furnace.

  Therefore, by mixing the pulverized petroleum residue with heavy oil, this petroleum residue can be melted and fluidized and transported as a mixed oil to the furnace, and the petroleum residue can be efficiently used without increasing the size and complexity of the equipment. In particular, it can be used as fuel.

  According to the petroleum residue fuel supply apparatus and method of the present invention, solidified petroleum residue can be melted and fluidized by mixing with heavy oil and transported to a furnace as mixed oil, resulting in an increase in size and complexity of the apparatus. It is possible to efficiently use the petroleum residue as fuel without incurring the conversion.

FIG. 1 is a schematic configuration diagram illustrating a fuel supply apparatus for petroleum residue according to a first embodiment of the present invention. FIG. 2 is a graph showing the transfer viscosity range and combustion viscosity range of petroleum. FIG. 3 is a schematic configuration diagram illustrating a fuel supply apparatus for petroleum residue according to a second embodiment of the present invention. FIG. 4 is a graph showing the mixing time with respect to the petroleum residue particle size. FIG. 5 is a schematic configuration diagram illustrating a fuel supply apparatus for petroleum residue according to a third embodiment of the present invention.

  Exemplary embodiments of a fuel supply apparatus for petroleum residue according to the present invention will be described below in detail with reference to the accompanying drawings. In addition, this invention is not limited to this Example, Moreover, when there exists multiple Example, it includes what comprises a combination of each Example.

  FIG. 1 is a schematic configuration diagram illustrating a petroleum residue fuel supply apparatus according to Embodiment 1 of the present invention, and FIG. 2 is a graph illustrating a petroleum transfer viscosity range and a combustion viscosity range.

  In recent years, heavy oil with high viscosity has been increasing with the trend toward whitening of fuel oil. In such a heavy oil combustion boiler using heavy oil as a fuel, it is necessary to lower the viscosity by increasing the temperature of the heavy oil having a high viscosity or mixing a viscosity modifier. Further, in the refining operation by the oil refining equipment, a highly heavy petroleum residue is finally taken out, but here again, in recent years, the oil residue is becoming heavier.

In the petroleum refining process, as shown in FIG. 2, light oil A and heavy oil B are refined and general petroleum residue C is taken out. Sex petroleum residue D is removed. When such light oil A, heavy oil B, petroleum residue C, and high heavy petroleum residue D are used in a general heavy oil combustion boiler, when transferring from a fuel tank to a boiler, a predetermined transfer viscosity range ( 300 to 700 mm ² / sec), and further, when burning in a boiler, it is necessary to reduce to a predetermined combustion viscosity range (about 15 to 100 mm ² / sec).

  In this case, the highly heavy petroleum residue D when taken out from the petroleum refining facility is fluidized because it is in a high temperature state, but becomes solid at room temperature. In order to transport the petroleum residue D, which is fluidized in a high temperature state, to the heavy oil combustion boiler, the transport pipe needs to be heated with steam or the like, but the heating temperature is about 300 ° C. In the present embodiment, the petroleum residue D is conveyed to the vicinity of the heavy oil combustion boiler in a solidified state at room temperature, and the solidified petroleum residue D is melted and supplied to the boiler.

  As shown in FIG. 1, the fuel supply apparatus for petroleum residue according to the first embodiment includes a mixing tank (mixing apparatus) 11, a transportation pipe (conveying apparatus) 12, a transportation pump (conveying apparatus) 13, and an oil heater 14. The fuel oil can be supplied to the heavy oil combustion boiler (furnace) 15.

  The mixing tank 11 can be charged with solidified petroleum residue and heavy oil, and has a stirring blade 21 and a heater (heating device) 22. The transport pipe 12 is a pipe extending from the mixing tank 11 to the heavy oil combustion boiler 15, and the fuel oil in the mixing tank 11 can be transported to the heavy oil combustion boiler 15 by the transport pump 13. The oil heater 14 heats the fuel oil flowing in the transport pipe 12 to a predetermined combustion viscosity range. The heavy oil combustion boiler 15 has a plurality of burners 23 and supplies fuel oil that has been transported by the transport pipe 12 and heated to the combustion viscosity range by the oil heater 14 into the boiler.

  In Example 1, the solidified petroleum residue and heavy oil are mixed in the mixing tank 11 and heated by the heater 22 to melt the petroleum residue. In this case, heavy oil is used as a viscosity modifier for melting the petroleum residue, but this viscosity modifier is lighter than the solidified petroleum residue, and heavy oil having a high affinity with the super heavy oil is optimal. . In this case, the viscosity of the fuel oil after mixing changes in proportion to the mixing ratio of the heavy oil to the superheavy oil, but the mixing ratio of the heavy oil to the petroleum residue is determined according to JISK2283 "Crude oil and petroleum products-kinematic viscosity test method and What is necessary is just to set using "viscosity index calculation method". Moreover, although the mixing tank 11 is heated with the heater 22, it is desirable to heat to 50 degreeC or more which the solidified petroleum residue starts melting.

  Accordingly, when the solidified petroleum residue and heavy oil are put into the mixing tank 11, the mixing tank 11 is heated by the heater 22, and the stirring blade 21 is activated. Then, the petroleum residue is heated in the mixing tank 11 and melted by being mixed with heavy oil to produce fuel oil (mixed oil). When the transport pump 13 is activated, the fuel oil in the mixing tank 11 is transported by the transport pipe 12 and heated to the combustion viscosity range by the oil heater 14 on the way, and then each burner 23 of the heavy oil combustion boiler 15. And is supplied from the burner 23 into the boiler.

  In addition, when heating the petroleum residue solidified with the heater 22, both may be heated after mixing with heavy oil in the mixing tank 11, or after heating only a petroleum residue in the mixing tank 11, You may mix. Further, since the petroleum residue is heated in advance, it may be put into the mixing tank 11. Further, petroleum residue may be added to the heated heavy oil.

  Thus, in the fuel supply apparatus for petroleum residue of Example 1, the mixing tank 11 that mixes the solidified petroleum residue and heavy oil, and the mixed oil that is mixed and fluidized by the mixing tank 11 are heavy. A transport pipe 12 and a transport pump 13 that are transported to the oil combustion boiler 15 are provided.

  Therefore, the solidified petroleum residue is mixed with heavy oil in the mixing tank 11 to melt and liquefy the petroleum residue, and the transport pump 13 is operated to convert the fuel oil into the heavy oil combustion boiler 15 through the transport pipe 12. Therefore, petroleum residues can be efficiently used as fuel without increasing the size and complexity of the apparatus. That is, the petroleum residue taken out from the oil refining facility can be conveyed in a solidified state, melted in the vicinity of the heavy oil combustion boiler 15, and then supplied to the heavy oil combustion boiler 15. To the heavy oil combustion boiler 15 is not required, and the handling of petroleum residues can be facilitated.

  In the fuel supply apparatus for petroleum residue according to the first embodiment, the heater 22 for heating the petroleum residue is provided. Therefore, by mixing the solidified petroleum residue with heavy oil and heating it with the heater 22, the petroleum residue can be easily melted and fluidized.

  Moreover, in the fuel supply method of the petroleum residue of Example 1, the step of heating the petroleum residue taken out from the oil refining facility and solidified, the step of mixing the molten petroleum residue with heavy oil, the petroleum residue, And a step of conveying the fuel oil mixed and fluidized with heavy oil to the heavy oil combustion boiler 15.

  Therefore, by mixing the heated petroleum residue with heavy oil, the petroleum residue can be melted and fluidized and conveyed to the heavy oil combustion boiler 15 as fuel oil, resulting in an increase in size and complexity of the apparatus. Therefore, the petroleum residue can be efficiently used as fuel.

  FIG. 3 is a schematic configuration diagram illustrating a petroleum residue fuel supply apparatus according to Embodiment 2 of the present invention, and FIG. 4 is a graph illustrating mixing time with respect to petroleum residue particle diameter. In addition, the same code | symbol is attached | subjected to the member which has the function similar to the Example mentioned above, and detailed description is abbreviate | omitted.

  As shown in FIG. 3, the fuel supply device for petroleum residue according to the second embodiment includes a mixing tank 11, a mill (grinding device) 31, a transport pipe 12, a transport pump 13, and an oil heater 14. The fuel oil can be supplied to the heavy oil combustion boiler 15.

  The mill 31 pulverizes the solidified petroleum residue to a predetermined particle size, and the petroleum residue is pulverized by the mill 31 and then charged into the mixing tank 11. That is, in Example 2, the solidified petroleum residue is pulverized by the mill 31 and the pulverized petroleum residue and heavy oil are mixed in the mixing tank 11 to melt the petroleum residue. In this case, it is desirable to roughly pulverize the petroleum residue to a particle size of 10 mm or less by the mill 31.

  That is, as shown in FIG. 4, when the particle size of the petroleum residue is about 200 mm, a mixing time of about 10 hours is required until the petroleum residue is mixed with heavy oil and melted. However, when the particle size of the petroleum residue is about 10 mm, a mixing time of about 30 minutes is sufficient until the petroleum residue is mixed with heavy oil and melted. When the mixing time of the petroleum residue and heavy oil is about 30 minutes, the timing for supplying the fuel oil to the heavy oil combustion boiler 15 is sufficient. In this case, the mixing time of the petroleum residue and heavy oil can be shortened, and the mixing tank 11 can be downsized.

  Accordingly, the solidified petroleum residue is supplied to the mill 31, and the petroleum residue is pulverized to a predetermined particle size and then charged into the mixing tank 11, and heavy oil is charged into the mixing tank 11. In the mixing tank 11, when the stirring blade 21 is operated, a small-diameter petroleum residue is mixed with heavy oil and melted to generate fuel oil (mixed oil). When the transport pump 13 is activated, the fuel oil in the mixing tank 11 is transported by the transport pipe 12 and heated to the combustion viscosity range by the oil heater 14 on the way, and then each burner 23 of the heavy oil combustion boiler 15. And is supplied from the burner 23 into the boiler.

  Thus, in the fuel supply apparatus for petroleum residue of Example 2, the mill 31 for pulverizing the petroleum residue, the mixing tank 11 for mixing the pulverized petroleum residue and heavy oil, and the mixing tank 11 are used for mixing. A transport pipe 12 and a transport pump 13 for conveying the fluidized mixed oil to the heavy oil combustion boiler 15 are provided.

  Accordingly, the solidified petroleum residue is pulverized by the mill 31 and then charged into the mixing tank 11. By mixing the pulverized petroleum residue with heavy oil, the petroleum residue is melted and fluidized. By operating the transport pump 13 and transporting the fuel oil to the heavy oil combustion boiler 15 by the transport pipe 12, the oil residue can be efficiently used as fuel without increasing the size and complexity of the apparatus. be able to.

  Further, in the fuel supply apparatus for petroleum residue of Example 2, the petroleum residue pulverized by the mill 31 is supplied to the mixing tank 11 together with heavy oil, and the petroleum residue is mixed with heavy oil in the mixing tank 11, This petroleum residue can be easily melted and fluidized.

  Moreover, in the fuel supply method of the petroleum residue of Example 2, the step of pulverizing the petroleum residue taken out from the oil refining facility and solidified, the step of mixing the pulverized petroleum residue with heavy oil, the petroleum residue, And a step of conveying the fuel oil mixed and fluidized with heavy oil to the heavy oil combustion boiler 15.

  Therefore, by mixing the pulverized petroleum residue with heavy oil, this petroleum residue can be melted and fluidized and transported as a mixed oil to the furnace, and the petroleum residue can be efficiently used without increasing the size and complexity of the equipment. In particular, it can be used as fuel.

  FIG. 5 is a schematic configuration diagram illustrating a fuel supply apparatus for petroleum residue according to a third embodiment of the present invention. In addition, the same code | symbol is attached | subjected to the member which has the function similar to the Example mentioned above, and detailed description is abbreviate | omitted.

  As shown in FIG. 5, the fuel supply apparatus for petroleum residue according to the third embodiment includes a fuel tank 11 a, a mill 31, a supply pipe 41, a mixing pipe (mixing apparatus) 42, a transport pipe 12, and a transport pump 13. The fuel oil can be supplied to the heavy oil combustion boiler 15.

  The fuel tank 11 a can store a predetermined amount of heavy oil, and the transport pipe 12 and the transport pump 13 are connected to the fuel tank 11 a via a mixing pipe 42. The mill 31 pulverizes the solidified petroleum residue to a predetermined particle size, and is connected to the mixing pipe 42 via the supply pipe 41. The mill 31 supplies the pulverized petroleum residue after pulverizing the petroleum residue. It can be supplied to the mixing pipe 42 through the pipe 41. That is, in Example 3, the solidified petroleum residue is pulverized by the mill 31, and the pulverized petroleum residue is supplied to the mixing pipe 42 and mixed with heavy oil to melt the petroleum residue. In this case, it is desirable that the petroleum residue is pulverized by the mill 31 to a particle size of 1 mm or less. In this case, a supply pump may be provided in the supply pipe 41, or a supply conveyor may be provided in place of the supply pipe 41.

  That is, as shown in FIG. 4 described in Example 2, when the particle size of the petroleum residue is about 200 mm, a mixing time of about 10 hours is required until the petroleum residue is mixed with heavy oil and melted. However, when the particle size of the petroleum residue is about 1 mm, a mixing time of about 30 seconds is sufficient until the petroleum residue is mixed with heavy oil and melted. When the mixing time of the petroleum residue and heavy oil is about 30 seconds, the timing for supplying the fuel oil to the heavy oil combustion boiler 15 is sufficient. In this case, the mixing time of the petroleum residue and heavy oil can be shortened, and the mixing tank 11 becomes unnecessary.

  Accordingly, the heavy oil is supplied to the fuel tank 11 a, while the solidified petroleum residue is supplied to the mill 31, and the petroleum residue is pulverized to a predetermined particle size and then supplied to the mixing pipe 42 through the supply pipe 41. On the other hand, when the transport pump 13 operates, the heavy oil in the fuel tank 11 a is transported by the mixing pipe 42 and the transport pipe 12. At this time, in the mixing pipe 42, the pulverized petroleum residue is supplied from the supply pipe 41, so that the small-diameter petroleum residue is mixed with heavy oil and melted to generate fuel oil (mixed oil). . Then, this fuel oil is transported by the transport pipe 12, transported to each burner 23 of the heavy oil combustion boiler 15, and supplied from the burner 23 into the boiler.

  As described above, in the petroleum residue fuel supply apparatus according to the third embodiment, the mixing pipe 42 connected to the fuel tank 11a, the mill 31 for crushing the petroleum residue, and the pulverized petroleum residue are supplied to the mixing pipe 42. A supply pipe 41 and a transport pipe 12 and a transport pump 13 for conveying the mixed oil mixed and fluidized in the mixing pipe 42 to the heavy oil combustion boiler 15 are provided.

  Accordingly, the milled oil residue is pulverized by the mill 31 and then supplied to the mixing pipe 42 connected to the fuel tank 11a. The pulverized petroleum residue is mixed with the heavy oil by the mixing pipe 42, whereby the petroleum residue is obtained. The fuel is melted and fluidized, the transport pump 13 is operated, and the fuel oil can be transported to the heavy oil combustion boiler 15 by the transport pipe 12, so that the oil residue can be efficiently removed without increasing the size and complexity of the apparatus. It can be used as a fuel. In this case, if the oil residue is pulverized until the particle size becomes about 1 mm, a mixing tank having a stirring blade is not necessary, and a simple pipe (mixing pipe 42) is sufficient, which enables simplification of the mixing apparatus and reduction of equipment costs. can do.

  The fuel supply apparatus and method for petroleum residue according to the present invention causes the enlargement and complication of the apparatus by melting the petroleum residue by mixing the solidified petroleum residue and heavy oil and mixing with the heavy oil. Therefore, the petroleum residue can be efficiently used as fuel, and can be applied to any petroleum residue fuel supply device.

11 Mixing tank (mixing device)
12 Transportation piping (conveying equipment)
13 Transport pump (conveying device)
14 Oil heater 15 Heavy oil fired boiler (furnace)
21 Stirring blade 22 Heater (heating device)
23 burner 31 mill (grinding equipment)
41 Supply piping 42 Mixing piping

Claims (4)

A mixing tank for supplying and mixing solidified petroleum residue and heavy oil;
A heating device for heating and melting the petroleum residue solidified in the mixing tank ;
A conveying device for conveying the mixed oil mixed and fluidized by the mixing tank to a furnace;
A fuel supply device for petroleum residue, comprising:   2. The petroleum residue fuel supply device according to claim 1, further comprising a crusher for crushing the petroleum residue. Before SL fuel supply system for petroleum residues according to claim 2, wherein the feeding to the mixing tank petroleum residue which is pulverized by pulverizer. Supplying and mixing the petroleum residue and heavy oil taken out from the oil refining facility and solidified into the mixing tank;
Heating and melting the petroleum residue in the mixing tank ;
A process of transporting a mixed oil obtained by mixing petroleum residue and heavy oil into a furnace;
A fuel supply method for petroleum residue, comprising:

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