JP4534862B2 - Self-thermal pyrolysis method and apparatus in equipment for pyrolytic gasification of waste - Google Patents

Description

  In the present invention, waste such as municipal waste is thermally decomposed by external heat to be separated into a pyrolysis gas and a pyrolysis residue and melted, or after the pyrolysis gas is burned, the exhaust gas is treated. Further, the present invention relates to a method and an apparatus for self-thermal pyrolysis using the pyrolysis gas as a fuel in equipment for recovering pyrolysis residue.

  As an alternative to the combustion system in which waste is combusted in an incinerator among waste treatment systems such as municipal waste, in recent years, waste is thermally decomposed by heating in a low oxygen atmosphere, Combustible pyrolysis gas, carbide (char) and ash as pyrolysis residue are generated, the pyrolysis gas and pyrolysis residue are led to the melting furnace, and a small amount of air (for example, air ratio is about 1.3) The pyrolysis gasification and melting equipment was made to burn at a high temperature and then taken out as molten slag, and the exhaust gas was treated with an exhaust gas treatment device and released to the atmosphere, and the pyrolysis gas was burned in a combustion furnace. After that, exhaust gas treatment is performed and then released into the atmosphere. On the other hand, a pyrolysis gasification facility has been developed and put to practical use in which pyrolysis residues are sorted and pulverized to recover carbides.

  FIG. 3 shows an outline of an example of a conventional pyrolysis gasification facility for waste, in which a supply pipe 2a is integrally connected to the inlet 2 side of one end and a discharge pipe is connected to the outlet 3 side of the other end. A heating channel 6 is formed between the inner cylinder 4 integrally connected to 3a and the outer cylinder 5 arranged concentrically outside the inner cylinder 4, and the outer cylinder 5 and the inner cylinder 4 are integrally formed. A pyrolysis kiln furnace 1 that can be rotated is used.

  The pyrolysis kiln furnace 1 is disposed horizontally and inclined so that the outlet 3 side of the other end is slightly lower than the inlet 2 side of one end, and the ring gear 7 provided on the outer peripheral surface of the outer cylinder 5 is The motor 8 and the pinion 9 of the output shaft are meshed so that the pyrolysis kiln furnace 1 can be rotated by driving the motor 8. Further, a dust feeder 10 is provided at the inlet 2 of the pyrolysis kiln furnace 1 so as to be inserted inside the supply pipe 2 a, and the waste 12 thrown into the charging hopper 11 is fed by the dust feeder 10. 2 is supplied. On the other hand, the outlet 3 of the pyrolysis kiln furnace 1 is provided with a separation chamber 15 for separating the pyrolysis gas 13 and the pyrolysis residue 14, and a pyrolysis gas line 16 is connected to the top of the separation chamber 15, A pyrolysis residue line 17 is connected to the bottom of the separation chamber 15 so that the pyrolysis gas 13 is taken out from the pyrolysis gas line 16 and the pyrolysis residue 14 is taken out from the pyrolysis residue line 17. Further, the outlet 3 side of the pyrolysis kiln furnace 1 is provided with a heating gas inlet portion which has a heating gas inlet 18 and allows the heating gas to flow through the heating flow path 6. The inlet 18 is connected to the heated gas supply line 20, and the heated gas (hot air) 22 generated in the hot air generator 19 using the heat recovery air 21 and the auxiliary fuel is heated through the heated gas supply line 20. The heat supply channel 6 is supplied from the inlet 18. Further, on the inlet 2 side of the pyrolysis kiln furnace 1, there is a heating gas outlet connected to the heating flow path 6, and a heating gas circulation line connected to a heating gas outlet 23 provided in the heating gas outlet. 24 is connected to the hot-air generating furnace 19 to circulate the heated gas to the hot-air generating furnace 19 and send the surplus gas through the surplus gas line 25 to the downstream surplus gas combustion furnace (not shown). Thus, in the state where the pyrolysis kiln furnace 1 is rotated at a low speed by driving the motor 8, the waste air in the charging hopper 11 is gradually supplied into the pyrolysis kiln furnace 1 by the feeder 10, The high-temperature heated gas (hot air) 22 generated in the generator 19 is supplied to the heating flow path 6 through the heating gas supply line 20 and the heating gas inlet 18 to circulate, thereby heating the waste 12 in the inner cylinder 4. Indirect heating by external heat from the gas 22 causes drying and thermal decomposition.

  The pyrolysis gas line 16 is connected to a surplus gas combustion furnace or a melting furnace (not shown) downstream so as to burn the pyrolysis gas 13. The pyrolysis gas 13 is taken out from the pyrolysis kiln furnace 1. In order to make it pressure-feed downstream, a pyrolysis gas fan 26 is provided in the middle of the pyrolysis gas line 16, and the pyrolysis gas fan 26 is operated to suck and take out the pyrolysis gas 13, The internal pressure of the pyrolysis kiln furnace 1 is kept constant (generally negative pressure). A valve 27 is provided on the downstream side of the pyrolysis gas fan 26 of the pyrolysis gas line 16 so as to adjust opening and closing. By adjusting the valve 27, the internal pressure of the pyrolysis kiln furnace 1 can be controlled. It is like that. A recovery line 28 is branched between the pyrolysis gas fan 26 and the valve 27 in the pyrolysis gas line 16 and is connected to the hot air generating furnace 19. A valve 29 for adjusting the opening degree is provided, and the valve 29 and the valve 27 are controlled to be opened and closed based on a signal from a temperature controller 30 provided in the heating gas supply line 20. is there.

  Further, the heating gas circulation line 24 is provided with a damper 31 and a heating gas circulation fan 32 in order from the upstream side, and the heating gas 22 in the heating flow path 6 is heated by the heating gas circulation fan 32 to The circulating flow rate of the heating gas 22 is adjusted based on a signal from the temperature controller 33 so as to keep the pyrolysis gas 13 at a predetermined temperature (for example, , See Patent Document 1).

Japanese Patent Laid-Open No. 11-193912

  However, a large amount of fine char is mixed in the pyrolysis gas 13 separated in the separation chamber 15 of the pyrolysis kiln furnace 1 described above, and the temperature of the pyrolysis gas 13 falls below the pyrolysis temperature. And tar component comes out. For this reason, when the pyrolysis gas 13 flows through the pyrolysis gas line 16, if there is a part of the flow that is turbulent or resistant, or a temperature is locally lowered, char or tar adheres and becomes a problem. There is.

  In the device described in Patent Document 1 shown in FIG. 3, the pyrolysis gas fan 26 and the valve 27 are installed in the pyrolysis gas line 16. When passing, there is a concern that clogging due to adhesion of tar and char may occur. If such a blockage occurs, there is a problem that long-term stable operation is hindered. In particular, when tar or char adheres to the impeller of the pyrolysis gas fan 26, there is a problem that the balance is lost and vibration is generated. Further, the valve 29 in the middle of the recovery line 28 may also adhere to char and tar in the pyrolysis gas 13 that passes during the autothermal pyrolysis.

  Therefore, the present invention prevents self-thermal pyrolysis for a long time by preventing the occurrence of clogging due to adhesion of tar or the like and vibration of the pyrolysis gas fan in the pyrolysis gas line and recovery line through which the pyrolysis gas passes. It is intended to be able to continue stable operation over a long period of time.

In order to solve the above-mentioned problems, the present invention provides a pyrolysis kiln furnace in which a high-temperature heated gas generated in a hot-air generator is circulated through a pyrolysis kiln furnace that is rotated, and then circulated. The waste inside is indirectly heated by external heat and pyrolyzed, and a part of the pyrolysis gas is supplied to the hot air generating furnace to be pyrolyzed by self-heating, surplus pyrolysis gas is burned, and exhaust gas In a self-thermal pyrolysis method in a facility for pyrolyzing and gasifying waste that is to be discharged to the atmosphere through an exhaust gas system to be treated, the inside of the pyrolysis kiln furnace is made negative pressure by suction through the exhaust gas system. In addition, a part of the heated gas to be circulated to the hot air generating furnace is sent to the downstream side through the surplus gas line so that the surplus gas as compared with the heated gas to be circulated to the hot air generating furnace. Many in line Made to flow to the heating gas is controlled at a negative pressure to the hot air generator furnace way to be thermally decomposed in the autothermal part of the pyrolysis gas in the draw to a hot air generating furnace, and the exhaust gas system An induction ventilator is provided downstream of the exhaust gas system so that the inside of the pyrolysis kiln furnace can be sucked through the exhaust gas system and controlled to a negative pressure, and the heating gas circulation line is positioned upstream of the hot air generation furnace. In addition, the apparatus is provided with a device for controlling the inside of the hot air generating furnace to a negative pressure so as to restrict the heated gas to be circulated into the hot air generating furnace.

  Further, in the above configuration, the pyrolysis gas line and the recovery line are configured to be heated from the outside by a heating means.

According to the self-thermal pyrolysis in the facility for pyrolyzing and gasifying the waste of the present invention, the following excellent effects can be obtained.
(1) The internal pressure of the pyrolysis kiln furnace can be controlled by sucking it through an exhaust gas system in which pyrolysis gas is combusted and exhaust gas treated, and a part of the heated gas circulated to the hot air generating furnace is surplus The internal pressure of the hot air generating furnace is controlled by flowing more gas through the surplus gas line as compared with the heated gas circulated to the hot air generating furnace through the gas line. Since the cracked gas is drawn into the hot-air generating furnace, it is possible to eliminate the need to control the internal pressure of the pyrolysis kiln furnace and distribute the flow rate by installing fans and valves in the pyrolysis gas line. The line can have a simple structure with only piping, and it can eliminate the fans and valves required for the pyrolysis gas line, making it an inexpensive system. Also valve on the yield line can be eliminated.
(2) The pyrolysis gas line is configured only with piping that does not include devices such as fans and valves, and the recovery line is configured only with piping that does not include valves, so no horizontal piping is provided. Thus, there is no possibility that the char mixed in the pyrolysis gas adheres to the pyrolysis gas line or the recovery line, and long-term stable operation can be continued.
(3) If the pyrolysis gas line or the recovery line configured as described in (2 ) above is heated from the outside so as to maintain the temperature of these lines, adhesion or blockage of tar components is derived. This makes it possible to continue more stable long-term operation.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

  FIG. 1 shows a case where the present invention is applied to a waste pyrolysis gasification facility as an embodiment of the present invention.

  Similar to the pyrolysis kiln furnace 1 shown in FIG. 3, an outer cylinder 5 is connected to the supply pipe 2a on the inlet 2 side of the inner cylinder 4 and connected to the discharge pipe 3a on the outlet 3 side. The heating channel 6 is formed between the two. Further, the hot air 22 as the heating gas supplied from the heating gas inlet 18 provided on the outlet 3 side is discharged from the heating gas outlet 23 provided on the inlet 2 side after flowing through the heating flow path 6. To do. Further, while supplying the waste 12 in the charging hopper 11 into the inner cylinder 4 by the dust feeder 10 provided at the inlet 2, the outer cylinder 5 and the inner cylinder 4 are rotated at a low speed to generate waste by external heat. The rotary pyrolysis kiln furnace 1 is used in which the pyrolysis gas 13 and the pyrolysis residue 14 generated by the pyrolysis are separated in the separation chamber 15.

  A hot gas generating furnace 19 configured to generate a high-temperature heated gas (hot air) 22 using heat recovery air 21 and auxiliary fuel is connected to a heating gas supply line 20 at the heating gas inlet 18 of the pyrolysis kiln furnace 1. And a heating gas circulation line 24 connected to the heating gas outlet 23 is connected to the hot air generating furnace 19, and the hot air (heating gas) 22 generated in the hot air generating furnace 19 is pyrolyzed kiln. It is made to circulate through the heating flow path 6 of the furnace 1, and the waste 12 is thermally decomposed in the pyrolysis kiln furnace 1 in the meantime. An outlet 34a for the pyrolysis gas 13 is provided at the top of the separation chamber 15 of the pyrolysis kiln furnace 1, and a pyrolysis gas line 34 is connected as it is without any fan or valve. The pyrolysis gas line 34 is connected to a surplus gas combustion furnace 35 downstream, and a recovery line 36 that is a pipe branched from the middle of the pyrolysis gas line 34 is connected to the hot air generating furnace 19. Thus, the pyrolysis gas 13 in an amount necessary for self-thermal pyrolysis is drawn into the hot air generating furnace 19.

  Furthermore, a device for setting the hot air generating furnace 19 to a negative pressure at a position downstream of the heated gas circulation line 24 connected to the inlet side of the hot air generating furnace 19, that is, a position upstream of the hot air generating furnace 19. A damper 37 as a pressure regulator is provided so that the opening degree of the damper 37 can be adjusted based on a signal from a temperature regulator 30 provided in the heating gas supply line 20, and the heating gas circulation line 24 is provided. Is provided with a damper 31 and a heating gas circulation fan 32 in order from the upstream side, and the opening degree of the damper 37 is reduced to operate the heating gas circulation fan 32. Thus, hot air (heating gas) 22 in the hot air generating furnace 19 is sucked so that the internal pressure of the hot air generating furnace 19 can be controlled to a negative pressure. By controlling the internal pressure of the hot air generating furnace 19 to a negative pressure, an amount of the pyrolysis gas 13 necessary for self-thermal pyrolysis can be automatically drawn into the hot air generating furnace 19 through the recovery line 36, and the damper The amount of the pyrolysis gas 13 drawn can be controlled by controlling the opening degree of 37.

  Further, the surplus gas line 25 branched from the heating gas circulation line 24 is connected to the surplus gas combustion furnace 35, and the surplus gas to be circulated is passed through the surplus gas line 25 to the surplus gas combustion furnace 35. In the surplus gas combustion furnace 35, after surplus pyrolysis gas and surplus heating gas 22 are combusted, exhaust gas treatment is performed by the exhaust gas treatment device 38, and then passed through the combustion exhaust gas line 39. It is configured to be guided to the chimney through the induction fan 40, and the above-described induction fan 40 is operated to suck the gas of the exhaust gas system A including the combustion furnace 35 and the exhaust gas treatment device 38, thereby the pyrolysis gas line 34. The gas can be drawn through the exhaust gas system A without providing a fan or a valve, and the pyrolysis is communicated with the combustion furnace 35, that is, with the pyrolysis gas line 34 only with the combustion furnace 35 and piping. To allow the internal pressure of the Lung furnace 1 to a negative pressure. Further, a damper 41 as a flow rate regulator is provided on the upstream side of the induction fan 40, and the opening degree of the damper 41 is controlled by a pressure regulator 42 provided in the combustion furnace 35, whereby the pyrolysis kiln furnace 1 The internal pressure of the combustion furnace 35 communicating with the gas, that is, the negative pressure of the pyrolysis kiln furnace 1 can be controlled to be constant.

  The negative pressure control of the exhaust gas system A by the induction fan 40 and the negative pressure control of the hot air generating furnace 19 by the damper 37 and the heated gas circulation fan 32 are used in combination, so that the necessary amount of the pyrolysis gas 13 is automatically set. In addition, it can be distributed to the hot air generating furnace 19 and the internal pressure of the pyrolysis kiln furnace 1 can be maintained at a constant pressure.

  Reference numeral 43 denotes a temperature regulator that adjusts the opening degree of the damper 31 provided in the heated gas circulation line 24, and controls the flow rate of the heated gas to circulate to control the pyrolysis gas temperature. Although not shown, the pyrolysis residue 14 is taken out by a residue take-out device, valuable metals are collected by a sorting device, and carbides are crushed and collected by a pulverizer.

  With the above configuration, while the pyrolysis kiln furnace 1 is rotated at a low speed, the waste 12 filled in the charging hopper 11 is supplied to the inlet 2 by the dust feeder 10 and the combustion exhaust gas line 39 Is operated to control the internal pressure of the pyrolysis kiln furnace 1 to a predetermined pressure, for example, -5 mmAq, through the exhaust gas system A of the combustion furnace 35, the exhaust gas treatment device 38, etc., and the heated gas circulation The heated gas circulation fan 32 on the line 24 is operated to suck the hot air 22 generated in the hot air generating furnace 19 as a heated gas and supply the heated gas inlet 18 into the heated flow path 6 for circulation. . As a result, while the space between the inlet 2 and the charging hopper 11 is sealed with the waste 12, the outlet 3 side is sucked through the exhaust gas system, so the inside of the pyrolysis kiln furnace 1 is placed in a low oxygen atmosphere. The waste 12 is indirectly heated by the heated gas flowing through the heating flow path 6, and dried and thermally decomposed. The negative pressure control by the induction fan 40 can be varied under a negative pressure holding condition within a certain range by adjusting the opening degree of the damper 41 on the upstream side of the induction fan 40.

  When the damper 37 on the heating gas circulation line 24 is adjusted, that is, adjusted so as to narrow down in the above state, the hot air 22 as the heating gas is sucked into the heating gas circulation fan 32 and circulated. The inside of the generating furnace 19 is further controlled to a negative pressure.

  When the negative pressure control of the hot air generating furnace 19 and the negative pressure control by the induction fan 40 of the exhaust gas system A are used in combination, the heat automatically taken out from the separation chamber 15 of the pyrolysis kiln furnace 1 to the pyrolysis gas line 34. A part of the cracked gas 13 can be automatically drawn into the hot-air generating furnace 19 through the recovery line 36 as a fuel for pyrolyzing by self-heating. The gas is automatically introduced into the combustion furnace 35 through the cracked gas line 34 and burned, and is treated as exhaust gas at 850 ° C. to 950 ° C. by the exhaust gas treatment device 38. At this time, the amount of the pyrolysis gas 13 required for the self-thermal pyrolysis to be drawn into the hot-air generating furnace 19 can be freely adjusted by changing the pressure balance by narrowing the damper 37. For example, the hot air generating furnace 19 can be made more negative as the pressure of the heating gas 22 is increased by increasing the narrowing of the damper 37, and the pyrolysis gas 13 is supplied to the hot air generating furnace 19. The amount of pull-in can be increased, and the internal pressure of the hot air generating furnace 19 can be varied under a negative pressure holding condition in an arbitrary range. As a result, the pyrolysis gas line 34 can be configured with only a pipe that does not require a fan for sending the pyrolysis gas, a valve for adjusting the flow rate, or the like.

  As described above, the amount of heating gas corresponding to the amount of combustion gas in the hot air generating furnace 19 is increased by automatically drawing the amount of the pyrolytic gas 13 necessary for self-thermal pyrolysis into the hot air generating furnace 19. The surplus is introduced into the combustion furnace 35 from the surplus gas line 25 and burned.

  The temperature of the pyrolysis gas 13 can be controlled to a constant temperature by adjusting the opening of the damper 31 on the heating gas circulation line 24 and adjusting the flow rate of the circulating heating gas.

  Next, FIG. 2 shows another embodiment of the present invention. In the same configuration as that shown in FIG. 1, a heating means 44 such as a heater is disposed outside the pyrolysis gas line 34, and The pyrolysis gas line 34 is heated from the outside by the heating means 44. Other configurations are the same as those shown in FIG. 1, and the same components are denoted by the same reference numerals.

  According to this embodiment, in addition to the effects obtained from the one shown in FIG. 1, the gas temperature in the pyrolysis gas line 34 can always be kept constant, and the temperature of the pyrolysis gas 13 can be maintained. Even if it falls, it is possible to prevent a situation in which tar adheres in the middle of the pyrolysis gas line 34 and causes clogging.

  The present invention is not limited to the above-described embodiment. For example, in the embodiment shown in FIGS. 1 and 2, the present invention is provided on the upstream side of the induction fan 40 on the combustion exhaust gas line 39. Although the case where the damper 41 is adjusted based on the signal of the pressure regulator 42 provided in the surplus gas combustion furnace 35 is shown, the pressure regulator 42 is provided on the outlet 3 side of the pyrolysis kiln furnace 1 to directly heat the damper 41. The internal pressure of the cracking kiln furnace 1 may be controlled to be constant. As described above, the damper 41 is provided on the upstream side of the induction fan 40, and the exhaust gas system such as the combustion furnace 35 is adjusted by adjusting the damper 41. Although the case where the internal pressure of the pyrolysis kiln furnace 1 is controlled via A is exemplified, the internal pressure of the pyrolysis kiln furnace 1 may be controlled by adjusting the rotational speed of the induction fan 40, pyrolysis In the gas line 34, the pyrolysis gas is normally used. 13 may be provided with a maintenance shut-off valve or the like that hardly causes turbulence or resistance to the flow, and in each of the above embodiments, the present invention is applied to a pyrolysis gasification facility for waste. However, the pyrolysis gas 13 and the pyrolysis residue 14 are burned in a melting furnace to take out molten slag, while the exhaust gas is further burned and treated by an exhaust gas treatment device, and then released to the atmosphere. Of course, various modifications can be made without departing from the gist of the present invention as well as being applied to a certain pyrolysis gasification melting facility.

It is a schematic diagram showing one embodiment of the present invention. It is a schematic diagram which shows the other form of implementation of this invention. It is a figure which shows the outline | summary of an example of the system which thermally decomposes and gasifies the conventional waste.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pyrolysis kiln furnace 2 Inlet 3 Outlet 6 Heating flow path 12 Waste 13 Pyrolysis gas 14 Pyrolysis residue 15 Separation chamber 19 Hot air generating furnace 20 Heating gas supply line 22 Heating gas (hot air)
24 Heating gas circulation line 32 Heating gas circulation fan 34 Pyrolysis gas line 35 Surplus gas combustion furnace 36 Recovery line 37 Damper (negative pressure control device)
40 Ventilator 41 Damper A Exhaust gas system

Claims (3)

By circulating the high-temperature heating gas generated in the hot-air generator to the pyrolysis kiln furnace that is to be rotated, the waste in the pyrolysis kiln furnace is indirectly heated with external heat. Pyrolysis, supplying a part of the pyrolysis gas to the hot-air generator for pyrolysis by self-heating, burning excess pyrolysis gas, and releasing it to the atmosphere through an exhaust gas system that performs exhaust gas treatment In the self-thermal pyrolysis method in the facility for pyrolyzing and gasifying a certain waste, the hot-air generating furnace for the heated gas to be circulated while suctioning through the exhaust gas system to make the inside of the pyrolysis kiln furnace have a negative pressure A part of the heated gas circulated to the exhaust gas line is sent to the downstream side through the surplus gas line, and more heating gas is allowed to flow through the surplus gas line than the heated gas circulated to the hot air generator. Hot air Self in a facility for pyrolytic gasification of waste, characterized in that the inside of the raw furnace is controlled to a negative pressure, and a part of the pyrolysis gas is drawn into the hot air generating furnace and pyrolyzed by self-heating. Thermal pyrolysis method. The high-temperature heated gas generated in the hot air generator is introduced into the pyrolysis kiln furnace that is to be rotated through the heated gas supply line and then circulated through the circulation line to the hot air generator . the heated gas to so that feed to the downstream side through the excess gas line, the waste of the pyrolysis kiln furnace, and pyrolysis by indirect heating by external heat of the heating gas is caused to flow through the pyrolysis kiln, heat Pyrolysis gas is supplied to the hot-air generator through the pyrolysis gas recovery line branched from the pyrolysis gas line so as to be pyrolyzed by self-heating, and surplus pyrolysis gas is burned and exhausted. In a self-thermal pyrolysis apparatus in a facility for pyrolyzing and gasifying waste that is to be released to the atmosphere through an exhaust gas system, an induction fan is provided downstream of the exhaust gas system, and the exhaust gas system is passed through. By sucking the pyrolysis kiln furnace to be controlled to a negative pressure, and the upstream position of the hot air generator furnace circulation line of the heating gas, so that squeezing the heating gas is circulated to heat air generating furnace A self-thermal pyrolysis apparatus in a facility for pyrolytic gasification of waste, characterized in that the apparatus has a configuration including a device for controlling the inside of a hot air generating furnace to a negative pressure. The high-temperature heated gas generated in the hot air generator is introduced into the pyrolysis kiln furnace that is to be rotated through the heated gas supply line and then circulated through the circulation line to the hot air generator. The heating gas is sent to the downstream side through the surplus gas line, and the waste in the pyrolysis kiln furnace is pyrolyzed by indirect heating with the external heat of the heating gas circulated through the pyrolysis kiln furnace, and pyrolysis Exhaust gas that is supplied to the hot-air generator through the pyrolysis gas recovery line branched from the pyrolysis gas line so that it is pyrolyzed by self-heating, and the excess pyrolysis gas is burned to treat the exhaust gas In a self-thermal pyrolysis apparatus in a facility for pyrolyzing and gasifying waste that is to be released to the atmosphere through a system, an induction ventilator is provided downstream of the exhaust gas system, and the exhaust gas system is passed through. The inside of the pyrolysis kiln furnace is sucked so that it can be controlled to a negative pressure, and the heated gas to be circulated into the hot air generating furnace is throttled at a position upstream of the hot air generating furnace in the heating gas circulation line. to a device for controlling a hot air generator furnace negative pressure, further, thermal waste, characterized in that it has a configuration which is adapted to the pyrolysis gas lines and recovery lines, heated externally by a heating means Self-thermal pyrolysis equipment in equipment for cracking and gasification.

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