JPS604862B2 - Method and apparatus for heat treating pulverized solid fuel - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for decomposition operations of carbon-containing solid materials, and more particularly to a method and apparatus for heat treating a powdered solid fuel.

The present invention is particularly suited for making both high calorific value powdered fuels for use in industrial and domestic furnaces and both gaseous and liquid products for use in a variety of applications.

In the prior art, methods and apparatus for thermally decomposing (heat treating) powdered solid fuels having a particle size of less than 1 degree per second are already known.

Such a process can increase the yield of solid and liquid products that are then converted into synthetic liquid fuels or industrial and chemical raw materials compared to processes based on slow heating rates. As one of the methods and apparatus for heat treatment of powdered solid fuel according to the prior art, the one shown in Soviet Inventor Certificate No. 335267 is known, and in the above method, the fuel is a gaseous heat carrier. is heated to a temperature of 300 to 500 qo within less than 1 second, at which temperature thermal decomposition of the fuel begins, and then,
The fuel is heated by the heat carrier to a temperature of 500 to 800 qo within 1 second, and at this temperature the thermal decomposition of the fuel takes place very vigorously, thus producing vapors including solid particles, gases, tar vapors and water vapors. A suspension of gas and gas is formed,
Then, by purifying and condensing the suspension with the solid material and the vapor-gas mixture, a gas and a useful liquid product are obtained, from which heavy tar and evolved water (water produced by heating) are obtained. Separated.

The apparatus for carrying out the above method has a first chamber, which chamber comprises means for supplying a charge of fuel to this chamber, means for supplying a gaseous heat carrier to this chamber, and means for supplying a gaseous heat carrier to this chamber; and means for discharging the heat carrier from the heat carrier.

The heat carrier is used to heat the fuel to a temperature at which its thermal decomposition begins. The apparatus further includes a second chamber connected to the first chamber, the second chamber having means for supplying a gaseous heat carrier to the chamber, and the second chamber having means for supplying the gaseous heat carrier to the chamber. The fuel is heated to a temperature at which its thermal decomposition is so severe that a suspension of vapor and gas is formed. The apparatus further includes means for separating solid material from the vapor gas mixture;
Means are provided for purifying and condensing the mixture to obtain a gas and a useful liquid, and for separating tar and generated water from the liquid. The above method and apparatus, as well as other methods and apparatus for conventional rapid pyrolysis, can increase the yield of tar, and this increase in yield means an increase in the content of heavy tar in the product. do.

Combustion heat of generated heavy tar (8400Kcal/k9
) is the heat of combustion of the solid material produced (6400-670
0Kcal/k9), but there are some difficulties in using it as a fuel. These difficulties arise because the heavy tar is an amorphous plastic material, so its viscosity is too high to be sent to consumers through transportation pipes, and it is too hard to be transported in containers. It lies in being enough.
Therefore, in order to use heavy tar as a liquid fuel, it is necessary to liquefy it by heating, which naturally requires the consumption of additional power, time and labor. Also, as is well known, the method and apparatus provide a solid product in the form of pellets, which pellets have a porous surface, which reduces the hygroscopicity and pulverization of the solid product. Both trends are increased.

The high hygroscopicity makes it impossible to store the solid product outdoors, and the high tendency to powder leads to unhealthy combustion conditions and considerable losses of fuel. The process further produces by-products such as generated water, which contains organic compounds dissolved therein and therefore requires purification (removal of contaminants) before being drained. This requires relatively large capital investment and operating costs.
An object of the present invention is to provide a method and apparatus for heat-treating powdered solid fuel. increases the heat of combustion of solid materials,
Furthermore, it is possible to transport the solid material by fluid transport, and furthermore, the tendency of the solid material to powder is virtually eliminated.

In the method according to the present invention, the raw material fuel is first heated by a gaseous heat carrier to a temperature of 300 to 500° C. within less than 1 second, and at this temperature thermal decomposition of the fuel begins; The fuel is then heated by the gaseous heat carrier to a temperature of 500-800°C in less than 1 second, at which temperature intense thermal decomposition of the fuel takes place, thus forming solid particles, gases, A suspension of vapors and gases, including tar vapor and water vapor, is formed, and the suspension is then combined with a solid material;
a vapor gas mixture, and purifying and condensing said mixture to obtain a gas and a useful liquid product;
The generated water is separated and, further in accordance with the present invention, the steam and gas suspension is heated by direct contact with a refrigerant before being separated into solid matter and a steam-gas mixture. The solid particles adsorb heavy tar at this temperature. When the fuel is cooled to a temperature of 36 pC or higher, the amount of heavy tar adsorbed by the fuel particles is so small that it can be virtually ignored; on the other hand, when the fuel is cooled to a temperature of less than 14,000 pC, In this case, the amount of tar adsorbed by the fine particles reaches high values as a result of condensation of the medium tar, thus resulting in excessive agglomeration (agglomeration) of the solid material.

As the coolant, water (usually water) can be used, but it is better to use generated water or light tar produced by heat treatment of solid fuel.

The resulting suspension of steam and gas is further mixed with water to 80%
By cooling to a temperature of ~20 pm, a pulp product is obtained.

In this case, if the suspension was cooled to a temperature higher than 80°C, it would be impossible to condense the generated water and the tar that was not adsorbed onto the solid material, whereas cooling the suspension to a temperature lower than 20°C would be contrary. generally requires additional equipment. The device according to the invention has a first chamber, into which means are provided for the introduction of a charge of fuel, and for the supply of a gaseous heat carrier into this chamber and for its discharge from the chamber. said hot lamp is used to heat said fuel to a temperature at which thermal decomposition begins; said apparatus further has a second chamber connected to said first chamber; The second chamber provides means for supplying a heat carrier into this chamber in order to heat the fuel to a temperature at which pyrolysis is so intense that a suspension of vapor and gas is formed. Further, in the present invention, there is provided a third chamber connected to the second chamber, and the third chamber sprays a coolant into the chamber to form a suspension of steam and gas. and means for discharging the solid material from the chamber.

That is, the third chamber is in communication with the coolant supply to allow the vapor and gas suspension to be cooled to a temperature at which heavy tar is adsorbed by the particulates, thus increasing combustion. It allows the production of solid substances that carry heat, and furthermore, the solid substances are suitable for being transported by fluid transport and are difficult to powder.

Preferably, an additional chamber is connected next to the third chamber, the additional chamber having means for dispersing a coolant into the chamber for cooling the suspension of steam and gas; By cooling,
A product in the form of pulp is obtained, said third chamber further comprising means and a separator for discharging the produced pulp and gas mixture.

The above-mentioned discharge means and separator can be passed through the pulp transport pipe, thereby allowing the water and solid particles trapped in the separator to be discharged from the separator and the pulp to be delivered directly to the consumer. It is possible to send.

It is also desirable to attach to the transport pipe a connecting pipe for adding solid substances or water to change the consistency of the pulp.

Hereinafter, the present invention will be described according to embodiments shown in the accompanying drawings.

The method of heat treating a powdered solid fuel according to the present invention is carried out as follows.

First, a powdered solid fuel having a particle size of 100% is heated to a temperature of 110 qo for drying.

The heated fuel is then heated by a free oxygen-free gaseous heat carrier to a temperature of 300-500°C in less than 1 second, at which temperature pyrolysis of the fuel begins. . The used heat loss body is separated from the fuel, which has already been heated to 300-50 thousand. Then the fuel is
500-8000 in less than 1 second with gaseous heat carrier
The fuel is heated to a temperature of 0, at which intense pyrolysis of the fuel takes place to form a "paper and gas" suspension consisting of solid particles, gas, paper of tar, and water vapor. Further, in the present invention, the generated suspension is forcibly cooled to a temperature of 360 to 140°C by direct contact with a coolant, at which temperature the solid particles adsorb heavy tar. Water or generated water (water generated by heating), which can be purified before drainage, is used to cool the suspension. When it is desired to obtain the product in the form of a solid fuel, the fine particles adsorbing the heavy tar are separated from the paper and steam mixture and sent to the consumer, and the paper and gas mixture is converted into a useful fluid product. It is condensed and purified to obtain and separate the generated water from it. Such adsorption of heavy tar by fine particles increases the combustion heat of the solid material, and furthermore makes it possible to transport it hydraulically and prevent it from becoming powder.

It should be noted here that the suspension of vapor and gas is
If the fuel is cooled to a temperature above When the suspension is cooled to a temperature below 140 qo, condensation of the intermediate resin results in a large amount of tar being adsorbed on the fine particles, which results in excessive loading of the solid material and thus expulsion of the product. Adhesion of the solid substance to the walls of the means for this purpose occurs.

When it is desired to obtain the product in the form of pulp (sludge), 360
The suspension of paper and gas cooled to ~140°C is cooled to 80~20qo by second forced cooling with water,
This cooling condenses the medium tars and some light tars, which together with solid particles and coolant form a pulp suitable for being sent directly to the consumer.

In this case, if the suspension is cooled to a temperature above 80 qo, the generated water and the light tar that has not been adsorbed by the solid substance will not be completely condensed; Additional equipment is required, resulting in higher invested capital and operating costs. By condensing some of the medium and light tars, the pulpy product has its heat of combustion increased and can be transported to the consumer by piping.

Additionally, if the generated water is used as a coolant, there is no need to purify it before draining it, since flammable substances (e.g. phenyl acid) dissolved in the generated water may not be present.
This is because they are utilized (incorporated into products as useful substances). The apparatus for carrying out the above-described method according to the invention has a first cyclone chamber 1, which is constructed as a cylindrical shell and has a tapered bottom.

The chamber 1 is provided with means 2 for supplying the powdered solid fuel to be treated into this chamber, the means having a hopper 3 for said fuel, said hopper 3 being connected to said fuel by a conduit 4. A cell wheel type feeder 5 is placed in the conduit 4 connected to the first chamber 1 . Located adjacent to the upper part of the first chamber 1 are means 6 for supplying a gaseous heat carrier for heating the fuel;
The carrier heats the fuel to a temperature at which its thermal decomposition begins to form a vapor and gas suspension containing solid particles, gas, tar vapor, and water vapor. Said means 6
has a connecting pipe 7, which is connected tangentially to the outer shell of the first chamber 1. In the connecting pipe 7, there is a coaxial D'.
A suitable burner (both not shown) is attached to the gaseous fuel supply and serves to combust the gaseous fuel to produce a hot body in the form of combustion gases containing substantially no oxygen. A connecting pipe 8 is connected to the first chamber 1 so as to be coaxial with the first chamber 1, and the end of this pipe 8 is connected to a means 9 for discharging the used heat carrier. ,
9 has a cell wheel type gate 10 for discharging undecomposed fuel extracted by the heat carrier, and a conduit 11 for discharging the heat carrier, and the conduit 11 is connected to the furnace of the boiler 12. Ru. A second cyclone chamber 15 is connected to the first chamber 1 by a conduit 13, and the conduit 13 has a cell wheel type feeder 14.

Said second chamber 15 has means 16 for passing therein a gaseous heat loss body to heat the fuel to a temperature at which intense pyrolysis takes place, said means having a connecting pipe 17; Connecting pipe 17
The end of the pond is connected to the chamber 15 in the tangential direction, and the pipe 1
A burner (not shown) is mounted coaxially within 7, said burner serving to combust fuel and produce a heat carrier in the form of oxygen-free combustion gas. A third cyclone chamber 19 is connected to the second chamber 15 by a conduit 18, and a refrigerant is sprayed in the upper part of the chamber 19 to form a suspension of vapor and gas, and heavy tar is turned into an atomized solid. Means 20 are provided for cooling to a temperature at which they are adsorbed by the particles, the means 20 comprising a number of sparges 21 mounted tangentially in the third chamber 19, these spargers 21 connected to the conduits. 22, and the conduit 22 communicates via a conduit 23 or 24 with a respective source 25 or 26 of normal water or generated water.

The third chamber 19 has a means 27 for discharging the solid substance in the form of finely divided particles that has adsorbed heavy tar, and this means 27
is made in the form of a connecting tube with a cell wheel type meter 29. Furthermore, a connecting pipe 30 is connected to the third chamber 19 so as to form a coaxial center within the chamber, and the other end of the connecting pipe 30 is connected to a cyclone type separator 31.
It serves to discharge a mixture of vapor and gas and to send said gas to a condenser to obtain a gas and a useful liquid product. An additional cyclone chamber 32 is connected next to the third chamber, and in the upper part of the chamber 32 water is sprinkled into this chamber to cool the steam and gas suspension and produce a product in the form of pulp. Means 33 for obtaining are fitted, the means 3,3 having a number of sparges 34 mounted tangentially in this chamber, which sparges 34 are connected via conduits 35 and 23 or 24 to a normal water supply or The generated water supply sources 26 are connected to each other.

Connected to the lower part of the chamber 32 is a means 36 for discharging the pulp, the means 36 being a vertically placed tube with a cell wheel type meter 37 at its lower end for discharging the pulp.
has. Further, a connecting pipe 38 is connected to the chamber 32 so as to be coaxial with the DI in the room, and the other end of the pipe 38 is connected to a separator 39 made in the shape of a green cyclone. A conduit 40 is provided in the upper part for discharging part of the gas and light tar vapor, and a cell wheel type meter is provided at the lower end of the pipe 39 for discharging solid particles accumulated in the separator. 41 is provided. The discharge means 36 and separator 39 are connected to a pulp transport pipe 44 via a conduit 42 or 43.
Connected to the tube 44 are connecting tubes 45 and 46 for adding solid material or water to change the pulp consistency. Conduits 22 and 35 are provided with controllers 47 and 48, respectively, for controlling the supply of coolant.

Next, the operation of the above-mentioned apparatus will be explained, but this explanation assumes that lignite is used as the raw material fuel.

The device described above operates as follows.

After drying, the powdered lignite having a particle size of 1.5 mm is fed into the first chamber 1 from the hopper 3 by the feeder 5, and at the same time, the pulverized lignite is fed into the first chamber 1 from the hopper 3 by the feeder 5. The oxygen-free heat carrier is sent to the chamber 1 via the connecting pipe 7.

The heat carrier enters chamber 1 in the transverse direction at a rate of 200k9 per tonne of lignite, taking with it the pulverized lignite.

Due to the action of centrifugal force and gravity, brown coal particles are thrown toward the chamber wall, descend in a whirlpool, and are heated to approximately 500°C by the heat carrier.
is heated to. The gaseous heat carrier used is cooled to 350 oo and discharged via a connecting pipe 8 into a cyclone 9. A part of the powdered lignite taken out by the heat carrier is separated from the carrier in the cyclone 9 as usual, and the heat carrier used is then passed through some kind of heat consumer, for secondary use (heat recovery). For example, it is sent to the furnace of boiler 12.

The lignite powder is then conveyed from the first chamber into the second chamber 15 by means of the feeder 14, and at the same time a heat carrier in the form of combustion gas heated to approximately 900° C. is conveyed through the connecting pipe 17 into the second chamber.

The heat carrier is supplied at a rate of 310k9 per tonne of lignite.

In the second chamber, the lignite melts in a fraction of a second from 500 to
80,000 °C, at which temperature pyrolysis of the lignite takes place and a steam-gas suspension containing solid particles and a steam-gas mixture is formed. The suspension enters a third chamber 19 via a conduit 18, and at the same time a coolant, e.g. generated water resulting from the processing of lignite, is admitted into the chamber 19 from a combined source 26 via a sparger 21. The amount of coolant sent into chamber 19 is determined to be sufficient to cool the vapor gas suspension to between 360 and 14,000 kg, i.e. 700 kg per tonne of lignite.
It is 9.

Under this condition, lignite particles strongly adsorb heavy tar,
Therefore, lignite particles become rubbery. If it is desired to obtain the solid substance produced in the form of rubbery particles, said product is discharged from the chamber 19 by means of a cell-wheel meter 29 and the vapor gas mixture produced is passed via a connecting pipe 30 to a separator. 31, in which the solid particles are separated and then sent to a condenser where it is condensed to obtain a gas and a useful liquid product. The generated water resulting from condensation is sent into source 26 for use as a coolant. The solid material produced by thermal decomposition has a high calorific value as a fuel,
The value varies from 6400 to 6700 Kcal/k9 to approximately 6600 to 6600 Kcal/k9 due to the adsorption of heavy tar by finely divided particles.
7200 Kcal/k9, and at the same time the hygroscopicity of the solid material is significantly reduced.

The steam-gas suspension comprising the solid substance, the steam-gas mixture and water is passed from the third chamber 19 into the additional cooling chamber 32, and at the same time water is usually fed tangentially into the additional chamber 32 via the spargeer 34. The steam gas suspension is cooled to a temperature of 80 to 2000 °C, thus condensing the light, medium, and light tar vapors and water vapor, which together with the gummy solid particles form the suspension (pulp). The pulp flows down into the discharge means 36. The uncondensed vapor gas mixture is sent via a connecting pipe 38 to a wet cyclone 39 where entrained solids and liquids are separated and the purified vapor gas mixture is sent to further operations. There, the useful products are separated from the mixture in the usual manner and the residual gas is sent to the furnace of boiler 12. From the discharge means 36 and the separator 39, the pulp is conveyed by the metering devices 37 and 41 to a transport pipe 44, which leads to the pulp consuming machine connected thereto.

When the consistency of the pulp is changed, solid particles (solid products) adsorbing water or heavy tar are transferred to the connecting pipe 46 or 4.
5 to be added to the pulp. Example 1 Lignite having an ash content of 9.6% was ground to a particle size of 1 Lm and preheated to a temperature of 110°C for drying.

The lignite was then placed in a cyclone chamber 1 and heated by a heat carrier in the form of oxygen-free combustion gas having a temperature of more than 500 qo. The brown coal was fed into chamber 1. In less than 1 second (approximately 0.3 seconds) the lignite was heated to 300-500 oo (ie, the temperature at which pyrolysis of lignite begins).

The composition of the lignite was hardly changed by such rapid heating, since only 20k9 of generated water, gas and entrained lignite were removed from the lignite. After being heated to the above temperature, the lignite is sent into the second cyclone chamber 15, where it is collected and conveyed by a vortex of oxygen-free hot combustion gas.

The amount of combustion gas supplied was 310k9 per ton of brown coal, and the temperature of the combustion gas was 900q○ or more. Lignite is mixed with combustion gas and has a concentration of approximately 0. 500-80 within lactic acid
heated to 0°C (i.e. the temperature at which pyrolysis of lignite takes place), thus producing 530 k9 of solid material per tonne of lignite, 26
0kg of pyrolysis gas, 120k9 of tar (24,000
(including natural gasoline) and 70k9
of generated water (containing 4.5% water-soluble phenyl acid and other organic compounds) was formed. According to the invention, the suspension is in the third cyclone chamber 19
and was cooled by direct contact with water fed tangentially into chamber 19.

In order to eliminate the need to purify the generated water resulting from the processing of lignite, the generated water was used as a coolant.

To cool the above suspension to a temperature of 360 qo or 140 qo, 710 k9 or 1 qo per ton of lignite, respectively.
230k9 of water was supplied. When it is desired to obtain a solid product, the solid material is substantially or completely separated from the suspension, and the separated suspension is sent to the next operation (usually condensation) for purification. Useful liquid and gaseous products were thus obtained.

The solid material obtained by thermal decomposition of brown coal has a high calorific value as a fuel, and its value is 6400 to 6700 Kcal compared to the charged brown coal due to the adsorption of heavy tar by fine particles.
'k9 rose to 6,600-7,200 Kcal'k9.

Furthermore, since the fine particles of the solid material were obscured by a thin layer of tar, the hygroscopicity of the solid material was significantly reduced, and furthermore, the solid material was susceptible to briquetting. The hygroscopicity of solid substances has been significantly reduced, making it possible to transport them through conduits.

Due to the above-mentioned secondary cooling, the portions of medium and light tars that were not adsorbed before and the generated water vapor are condensed, which together with the solid particles and water form a pulp-like mixture, which is then sent to the point of use via the transport pipe 44. It was done. The evolved gases resulting from the cooling of the steam gas suspension are purified and sent to consumer equipment (
for example, to the furnace of the boiler 12 of this device. The heat of combustion of the pulp produced as described above is two to three times the heat of combustion of a pulp of lignite and water based on natural lignite.

Example 2 Pulverized peat (with decomposition degree of 45-60% and ash content of 5.7%) was pulverized to about 0-0.06 ribs,
After drying until the residual moisture is about 9%, move to cyclone room 1.
Combustion gas having a temperature of 350 pm or higher is supplied at a rate of 160 to 230 k9 per ton of bagged peat, and 0. The peat within the milk sand was heated to 250-300 qo, and at this temperature pyrolysis of the peat began.

Peat composition was hardly changed by such rapid heating. After being heated as described above, the peat was sent to the second cyclone chamber 15 and heated again by combustion gas having a temperature of over 600 qC. The above combustion gas is supplied at a rate of 180 to 270 k9 per ton of peat, and approximately 0
．． Within 3 seconds the peat is heated to a temperature of 500-550 oo, at which temperature intense pyrolysis of the peat occurs and a vapor gas suspension is formed which contains 50% tar.
, 34% solid matter, 11% water-soluble phenol and other organic compounds, and 5% evolved gas. The suspension is sent into a third cyclone chamber 19 according to the invention,
Forced cooling was achieved by direct contact with water that was introduced tangentially into the chamber.

In order to eliminate the need for purification of the generated water generated by peat processing, the generated water was used as a coolant. to cool the suspension to a temperature of about 360 qo or 140°C;
605k9 or 930 per ton of Hishiri peat respectively
K9 of water was supplied. Above, 360oo or 140
Upon cooling to a temperature of °C, 500 k9 of solid material adsorbed 45 kg or 82 k9 of tar, respectively. In order to obtain a product in the form of a solid substance, the solid substance is partially or completely separated from the vapor-gas mixture; if completely separated, the vapor-gas mixture is sent to the next process for purification. and thus useful liquid and gaseous products were obtained. The solid material produced by the thermal decomposition of peat has a high calorific value as a fuel, and its value ranges from 6000Kcal/k9 to 6300KC due to the adsorption of heavy tar by fine particles.
It increased to al/k9.

In addition, the hygroscopicity of the aggregated material was significantly reduced, and the solid material was more easily briquetted. The solid material produced can be conveyed to the consumer equipment by hydraulic transport (fluid transport) due to its low hygroscopicity.

In order to reduce the hygroscopicity of the fuel, the vapor gas suspension cooled to 360-140° is passed into an additional chamber 32 according to the invention where it is recooled to a temperature of 80-200°. Therefore, some of the vapors of medium and light tars and generated water vapors that were not adsorbed on the solid material were condensed and they formed a pulp-like mixture with the solid material. The pulp was sent to the consumer, while the cooled generated gas was sent to the wet cyclone 39, where the collected solid particles and liquid were separated and then sent to the consumer. The resulting particulate solid material adsorbing heavy tar is separated from the vapor gas suspension, and the separated suspension is sent to a purification and condensation operation, thereby yielding gas and useful liquid products. Ta. The generated water resulting from condensation of the suspension was used as a coolant after the tar was separated.

[Brief explanation of the drawing]

The figure is an explanatory view showing an apparatus for carrying out the method of heat-treating powdered solid fuel according to the present invention. 1...First room, 15...Second room, 19...
. . . third chamber, 20 . . . means for supplying and distributing coolant into the third chamber, 27 . . . means for discharging solid substances, 31 . . . . means for discharging a suspension of water vapor and gas, 32 . . . additional chamber, 33 . . . means for supplying and dispersing water into the additional chamber; 36...Means for discharging pulp,
39...Separator, 44...Transport pipe, 4
5,46...Connecting pipe, 47,48...
controller.

Claims (1)

[Claims] 1. A pulverized solid fuel is heated by a gaseous heat carrier to a temperature of 300 to 500°C at which thermal decomposition of the fuel begins in less than 1 second, and then the above fuel is heated to a temperature of 300 to 500°C at which thermal decomposition of the fuel begins. 500-800℃ where strong thermal decomposition of fuel occurs in less than 1 second
heating to a temperature of A method of thermally treating pulverized solid fuels by purifying and condensing them to obtain a useful liquid product, in which the suspension is brought into direct contact with a coolant before being separated into a solid material and a vapor gas mixture. A process characterized by cooling to a temperature of 360 DEG to 140 DEG C., at which the finely divided solid particles absorb heavy tar, and then cooling to a temperature of about 80 DEG to 20 DEG C., at which a pulpy product is obtained. 2. Process according to claim 1, characterized in that water is used as a coolant for cooling the suspension of steam and gas. 3. The method according to claim 1 or 2, characterized in that generated water produced by heat treatment of solid fuel is used as a coolant. 4 a first chamber, said first chamber having means for supplying said heat carrier into said chamber for heating said fuel to a temperature at which thermal decomposition of said fuel begins; means for discharging the fuel from the chamber; and a second chamber connected next to the first chamber, the second chamber containing the fuel in which intense pyrolysis takes place to produce steam and gas. An apparatus having means for supplying a gaseous heat carrier to this chamber for heating said fuel to a temperature at which a suspension of said fuel is formed, and means for separating solid matter from said vapor gas mixture. Second room 1
5, a third chamber 19 is provided in which the vapor and gas suspension is cooled to a temperature at which the solid fine powder particles adsorb heavy tar. means 20 for supplying and dispersing the agent, means 27 for discharging the formed solid product from the chamber, and means for discharging the vapor and gas suspension from the chamber for purification and condensation. An additional chamber 32 is provided which is connected to the third chamber 19 and has means 31 for conveying the vapor and gas suspension to the medium tar and part of the light tar. Means 33 for supplying and distributing water into this chamber for cooling to a temperature at which a pulpy product is obtained upon condensation, means 36 for discharging the pulpy product from this chamber; , a separator 39 for discharging gas; further, the separator 39 and the pulp discharging means 36 are connected to a pulp transport pipe 44, and the transport pipe is provided with solids to change the concentration of the pulp. A device characterized in that it is equipped with connecting pipes 45 and 46 for adding product or water.