WO2014044084A1

WO2014044084A1 - Coal pyrolysis furnace for low metamorphic bituminous coal

Info

Publication number: WO2014044084A1
Application number: PCT/CN2013/080806
Authority: WO
Inventors: 王新民; 王福生
Original assignee: 山西鑫立能源科技有限公司
Priority date: 2012-09-21
Filing date: 2013-08-05
Publication date: 2014-03-27
Also published as: CN102827616A; CN102827616B

Abstract

Disclosed is a coal pyrolysis furnace for low metamorphic bituminous coal, including a furnace body, a coal-charging device, a coal pyrolysis carbonization device, a coke modification device, a coke dry quenching device, and a raw gas export device; the coal charging device, the coal pyrolysis carbonization device, the coke modification device, the coke dry quenching device, and the raw gas export device are formed integrally on the furnace body from top to bottom; the coal-charging device includes a coal-charging bunker, a vapour-discharging device and a preheating device; the coal pyrolysis carbonization device mainly includes a carbonization chamber, an external fuel gas heating device, an inner fuel gas heating device and a flame path bow. Using the pyrolysis furnace, continuous high-temperature pyrolysis of low metamorphic bituminous coal can be achieved and meanwhile, a clean gas produced by purifying and recovering from the waste gas during the high temperature pyrolysis is burnt, and a low-temperature waste gas produced by the incompletely combusted waste gas via regenerative heat exchange is used for dry quenching and cooling the "anthracite" formed by the high temperature pyrolysis, and then again the high-temperature combustible waste gas produced during the dry quenching is supplemented with gas for combustion and the hot high-temperature waste gas after combustion by gas supplementation is used to preheat and dry the low metamorphic bituminous coal before entering the furnace, which substantially does not need to consume external energy, thus saving production costs.

Description

Coal pyrolysis furnace with low metamorphic bituminous coal

The invention relates to a coal pyrolysis furnace, in particular to a coal pyrolysis furnace for coal, carbonization, upgrading and dry quenching of low metamorphic bituminous coal.

Background technique

Studies have shown that China's coal from the age of formation, the Jurassic coal reserves the largest, accounting for about 45% of China's proven coal storage, due to the formation of coal in this era, in addition to a very small number of anthracite, the majority are brown coal Low-metamorphic bituminous coal such as long-flame coal, non-coked coal, weakly-viscous coal, etc. The physical properties of low-metamorphic bituminous coal are high water content and high volatile content, especially lignite, a brown-black color between peat and bituminous coal. Matte low-grade coal, water content is more than 40%, and contains free humic acid, chemically reactive, easy to weather in the air, difficult to store and transport, instant storage can not exceed two months, otherwise It is easy to ignite spontaneously, and the stacking height should not exceed two meters. The land area is large, and the mining rate of these coals is often very low.

However, low-grade metamorphic bituminous coal and lignite are widely used in coking, refining, gasification, liquefaction, power and chemical industries. In order to make better use of low-grade bituminous coal and lignite, the industry's coal-based process for low-grade bituminous coal and lignite is generally adopted first. Low-metamorphic bituminous coal and lignite are dehydrated and dried, and then low-temperature pyrolysis and dry distillation method. Due to the dehydration and drying of metamorphic bituminous coal and lignite, a large amount of energy is consumed, the production cost is high, and the coal-containing products obtained by low-temperature pyrolysis dry distillation such as waste gas and tar It is also relatively low. At this stage, people have gradually studied the high-temperature pyrolysis process for low-grade bituminous coal and lignite.

The inventors have long studied the physical properties of low-grade bituminous coal, lignite and high-temperature coal pyrolysis process, and innovated a new set of dehydration drying and high-temperature pyrolysis processes and devices for low-metamorphic bituminous coal and lignite.

Summary of the invention

The invention provides a coal pyrolysis furnace with low metamorphic bituminous coal, wherein the coal pyrolysis furnace integrates coal pyrolysis carbonization, upgrading and dry quenching process into the same coal heating furnace body, so that carbonization, upgrading, and extinction Can be achieved continuously.

The technical solution adopted to achieve the above objectives is:

Coal pyrolysis furnace with low metamorphic bituminous coal, including furnace body, coal charging device, coal pyrolysis carbonization device, coke upgrading device, CDQ device, waste gas derivation device; coal feeding device, coal pyrolysis The carbonization device, the coke upgrading device and the dry quenching device are integrally formed from top to bottom on the furnace body; the coal feeding device comprises a furnace body, a coal charging bin, a water vapor discharging device and a preheating device; The upper part of the upper part forms a coal charging chamber; the water vapor discharging device comprises a water vapor discharging hole, a water vapor hole collapsing pipe, a water vapor collecting pipe, a condensed water collecting pipe, and the water vapor discharging hole is disposed on the furnace body wall around the coal loading bin Above, the water vapor hole collo conduit connects the water vapor discharge holes in series in a longitudinal direction, and the water vapor collection pipe is arranged in the water vapor hole collo conduit The upper part of the series of water vapor holes are connected together to facilitate the discharge of water vapor. The condensed water collecting pipe is arranged at the lower part of the water vapor hole colliding pipe, and the plurality of water vapor holes are collided with the lower part of the pipe to facilitate the discharge of the condensed water; The preheating device is disposed under the coal loading bin, and the preheating device comprises a furnace body, an exhaust gas chamber, at least one exhaust gas preheating passage, at least one preheater, at least one preheating chamber, and an exhaust gas gathering loop, The furnace body is divided into inner, middle and outer three-layer walls, the inner wall forms an exhaust chamber, the bottom of the exhaust chamber is provided with a hot exhaust gas inlet passage, and an exhaust gas gathering loop is formed between the middle wall and the outer wall. An exhaust gas main outlet is arranged on the exhaust gas gathering loop, and the exhaust gas preheating passage passes through the inner and middle walls to connect the exhaust gas chamber with the exhaust gas gathering loop, and separates the inner wall and the middle wall into a plurality of preheating The preheater is respectively placed in two adjacent preheating chambers, and a coal preheating passage is formed in the middle of the preheater, and the upper part of the coal preheating passage communicates with the bottom of the coal charging chamber The coal pyrolysis carbonization device is arranged in the middle of the furnace body, and mainly comprises a carbonization chamber, an external gas heating device, an internal combustion heating device, and a fire tunnel bow; the carbonization chamber is located above the fire tunnel bow and is composed of a refractory heat conductive material inner and outer ring wall An annular space surrounding the outer periphery of the carbonized outdoor wall ring is an external gas heating device, wherein the external gas heating device is mainly composed of a group of the first gas heater and the second gas heater and the gas reversing device having the same structure, and the carbonization indoor The inner wall of the ring wall is an internal combustion heating device, and the internal combustion heating device is mainly composed of a group of three third gas heaters having the same structure and a fourth gas heater and a quenching exhaust gas heater; The lower part of the preheating passage communicates with the carbonization chamber of the coal pyrolysis furnace; the focal reforming device is disposed in the furnace cavity of the furnace body on the bow of the fire tunnel, and the lower part of the carbonization chamber comprises a reforming chamber and an internal combustion heating device. The lower part of the main inner fire passage and the lower inner side fire passage, the central annular wall of the internal combustion heating device encloses the high-temperature combustible exhaust gas of the central passage into the lower part of the passage, the center The lower part of the wall is provided with a combustible exhaust gas inlet hole passing through the high-temperature combustible exhaust gas inlet passage and the main inner fire passage and the lower auxiliary inner fire passage, and the dry quenching device is disposed in the coal pyrolysis furnace chamber in the carbonization chamber, the coke modification device, The internal combustion heating device and the underside of the fire tunnel bow include a high temperature quenching chamber, a low temperature quenching chamber, a quenching bridge bow, and a quenching exhaust fan; the high temperature quenching chamber is disposed below the fire tunnel bow, and the high temperature quenching chamber The top of the fire is connected to the high-temperature combustible exhaust passage; the quenching bridge is disposed between the high-temperature quenching chamber and the low-temperature quenching chamber, including a bridge bow, a collecting chamber, a dry quenching loop, and a dry quenching duct, at least one The above bridge arch is arranged at a certain angle in the center of the high temperature quenching chamber and the center of the low temperature quenching chamber in a dry quenching loop, and a wind collecting chamber is formed in the middle of the bridge arch, and the wind collecting chamber is a straight upper and a lower The inverted truncated cone shaped chamber is provided with a hemispherical hood at the top of the plenum, and the lower opening of the plenum is facing the low temperature quenching chamber; the dry quenching duct is disposed in the bridge bow, and one end of the dry quenching duct leads to the collecting chamber The other end leads to the dry air circulation loop The dry air circulation loop is connected with the quenching exhaust air blower through the air inlet duct; the bottom opening of the low temperature quenching chamber is provided with a coke out valve; the waste gas derivation device includes a waste gas concentration room and is internally exhausted a channel, an outer outlet channel, an outlet main channel, and an outlet loop; the waste gas concentration chamber is disposed at the top of the carbonization chamber of the coal pyrolysis furnace and integrally formed with the carbonization chamber; and the inner outlet passage is disposed in the fire passage partition wall The inner outlet passage passes through the inner ring wall of the carbonization chamber to the carbonization chamber, and the inner outlet passage exits through the inner ring wall to the waste gas concentration chamber at the top of the carbonization chamber; the outer outlet passage defines the outer wall of the furnace body Medium, including an outer outer export channel inlet, an upper outer export channel inlet, and the The outer outer outlet channel inlet, the upper outer outlet channel inlet passes through the outer ring wall of the carbonization chamber to the carbonization chamber, and the outer outlet channel outlet passes through the outer ring wall to the waste gas concentration chamber at the top of the carbonization chamber; It is disposed in the outer wall of the furnace body of the coal pyrolysis furnace, and the outlet of the main passage is connected with the waste gas concentration chamber and then extends upward to the outer wall portion of the furnace body, and the outlet loop is provided with a waste gas guide. Export.

Preferably, the furnace body of the lower part of the coal preheating passage of the preheater is provided with an intermediate regulating coal bunker, and the lower part of the preheating passage of the coal is connected with the intermediate regulating coal bunker, and the middle regulating coal bunk passes through the coal cutting pass and The carbonization chamber of the coal pyrolysis furnace is connected.

Preferably, the first gas heater of the external gas heating device comprises a first combustion chamber, a first gas inlet branch pipe and a first heat storage heat exchanger, and the first combustion chamber is a relatively closed gas combustion fire channel, a gas inlet branch pipe leads to the bottom of the first combustion chamber, and the first heat storage heat exchanger comprises a first heat storage chamber, a first heat storage body, a first air inlet branch pipe and a first burn gas exhaust pipe branch pipe, and the first heat storage chamber The first regenerator is disposed in the first regenerator, the first regenerator is connected to the bottom of the first combustion chamber, and the other end is connected to the first air inlet branch and the first combustion exhaust. The second gas heater includes a second combustion chamber, a second gas inlet branch pipe and a second heat storage heat exchanger, and the second gas inlet branch pipe leads to the bottom of the second combustion chamber, and the second heat storage heat exchanger The second heat storage chamber, the second heat storage body, the second air inlet branch pipe and the second combustion exhaust gas discharge branch pipe are disposed, the second heat storage chamber is also disposed in the outer wall of the furnace, and the second heat storage body is provided with the second heat storage chamber Medium, second regenerator Leading to the bottom of the second combustion chamber, the other end is respectively connected with a second air inlet branch pipe and a second combustion exhaust gas discharge branch pipe; a combustion chamber through hole is arranged between the first combustion chamber and the second combustion chamber; The gas reversing device comprises an upper disc, a lower disc, a rotary reversing motor, an air fan, a gas fan and an exhaust fan, wherein the lower disc is respectively connected with an air main pipe and a first air pipe, a second air pipe, and a gas pipe And a first gas pipe, a second gas pipe, a combustion exhaust gas main pipe and a second combustion exhaust gas pipe, a first combustion exhaust gas pipe, wherein the second combustion exhaust gas pipe and the first combustion exhaust gas pipe and the first air pipe and the second air The arrangement of the branch pipe and the first gas pipe and the second gas pipe are just reversed; the upper plate is rotatably attached to the upper plate, and the upper plate is respectively provided with an air connecting pipe, a gas connecting pipe and a combustion exhaust pipe connecting pipe, The rotary reversing motor is coupled to the upper disc drive to drive the upper disc to reciprocally rotate on the lower disc; wherein, the first air duct and the first An air enters the branch pipe connection, and at the same time, the first gas pipe is connected to the first gas inlet branch pipe, and at the same time, the first combustion exhaust gas pipe is coupled with the first combustion exhaust gas discharge branch pipe; similarly, the second air The branch pipe and the second air enter the branch pipe, and at the same time, the second gas pipe connects the second gas pipe and the second gas into the branch pipe, and at the same time, the second combustion exhaust pipe is coupled with the second combustion exhaust gas branch pipe.

Preferably, the quenching exhaust gas heater of the internal combustion heating device comprises an inner fire channel, an air supply pipe, a primary air supply pipe, a secondary air supply pipe, an air supply ring, a center ring wall, an inner fire channel partition wall, and a center The inner fire passage is mainly composed of a carbonized indoor ring wall and a central annular wall located in the carbonization indoor ring wall and at least one inner fire passage partition wall separated into at least one set of main inner fire passages and sub-internal fire passages. The auxiliary inner fire channel is provided with an upper blocking partition and a lower sealing partition, and the auxiliary inner fire passage is divided into upper, middle, and The next three sections, that is, the upper section of the inner fire channel, the middle section of the inner inner fire channel, and the lower section of the inner inner fire channel, the upper section of the upper inner fire channel and the main inner fire channel are provided with exhaust gas passage through holes. a hot exhaust gas discharge passage is opened at the top of the upper inner fire passage and the main inner fire passage, and a fire passage through hole is arranged on the fire passage partition wall between the lower auxiliary inner fire passage and the main inner fire passage; the center ring wall A central passage is arranged, and a channel partition is arranged in the central passage flush with the upper blocking partition, and the central passage is divided into upper and lower portions, that is, the upper portion forms a buffer zone, and the lower portion forms a high-temperature combustible exhaust gas into the passage. The center ring wall has an exhaust gas inlet hole through the buffer zone and the main inner fire channel and the upper inner fire channel. The lower part of the center ring wall is provided with a flammable gas passage through the high-temperature combustible exhaust gas passage passage and the main inner fire passage and the lower inner fire passage. The exhaust gas enters the hole, the air supply loop is disposed on the outer wall of the furnace, the air supplement pipe is connected with the air supply loop, and the primary air supply pipe and the secondary air supply pipe are connected with the air supply loop. The underside of the bow of the fire tunnel passes through Extending to the inside of the fire passage partition between the main and auxiliary inner fire passages, the outlet of the primary air supply pipe is located below the lower closed baffle, respectively leading to the main inner fire passage and the lower auxiliary inner fire passage, and the secondary air supply pipe The secondary air supply outlet leads to the main inner fire passage; the middle auxiliary fire passage forms a relatively closed independent gas combustion chamber, and the upper middle section and the inner inner fire passage are adjacent to the next middle section and the inner inner fire passage passes through the combustion chamber passage Passing through a related group, the combustion chamber passage is located below the upper plugging partition and passes through a main inner fire passage between the upper middle section inner inner fire passage and the next middle middle section sub inner inner fire passage, the third The gas heater includes a third combustion chamber, a third air inlet branch pipe, a third gas inlet branch pipe, a third heat storage cavity, a third heat storage body, a third air inlet branch pipe, and a third combustion exhaust gas discharge branch pipe, The third combustion chamber is a middle auxiliary fire passage, and the third gas inlet branch pipe extends from below the bow of the fire tunnel bow and extends upward through the interior of the fire passage partition wall to the third combustion chamber, that is, the middle section and the inner fire passage. The third heat storage chamber is disposed on the strip On the lower furnace body, the third heat storage body is placed in the third heat storage chamber, and one end of the third heat storage chamber passes through the extension passage from the lower side of the bow of the fire tunnel bow and extends upward through the interior of the fire passage partition wall. At the bottom of the third combustion chamber, the other end of the third regenerator is respectively connected with a third air inlet branch pipe and a third combustion exhaust gas discharge branch pipe; similarly, the fourth combustion heater structure is the same as the third burner, wherein the fourth combustion chamber Associated with the third combustion chamber through the combustion chamber passage.

Preferably, the external gas heating device is mainly divided into upper, middle and lower three-stage heating, and each segment is composed of a plurality of sets of first gas heaters and second gas heaters having the same structure.

The invention integrates coal pyrolysis plus coal, carbonization, upgrading and dry quenching process in the same coal heating furnace body, can realize continuous high-temperature pyrolysis of low-metamorphic bituminous coal continuously and simultaneously, and utilizes high-temperature pyrolysis process to generate The waste gas is burned by the purified natural gas after chemical production, and the low-temperature exhaust gas which is converted into heat after heat exchange by the exhaust gas which is not fully burned is replaced by the incombustibility of the combustion exhaust gas itself. The "anthracite charcoal" that has been completed by high-temperature pyrolysis is subjected to dry quenching and cooling, and then the high-temperature combustible exhaust gas generated during the dry quenching process is replenished and combusted. The high-temperature hot exhaust gas after the supplemental combustion is used to enter the furnace. The low-grade metamorphic bituminous coal is preheated and dried. Therefore, the coal pyrolysis coal addition, carbonization, upgrading, and dry-extinguishing process basically does not need to consume external energy, and the production cost is saved. DRAWINGS

The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

Figure 1 is a cross-sectional view 1 of a hot exhaust gas dehydration device according to the present invention;

Figure 2 is a cross-sectional view 2 of the hot exhaust gas dehydration device according to the present invention;

Figure 3 is a schematic cross-sectional view of the k-k in Figure 1;

Figure 4 is a schematic cross-sectional view of the p-p in Figure 1;

Figure 5 is a schematic cross-sectional view of j-j in Figure 1;

Figure 6 is a cross-sectional view of the coal charging device of the present invention;

Figure 7 is _a schematic cross-sectional view of _a - _a in Figure 6;

Figure 8 is a cross-sectional view taken along line b-b of Figure 6;

Figure 9 is a cross-sectional view taken at d-d in Figure 6;

Figure 10 is a schematic view showing the composition of the coal feeding device and the hot exhaust gas dehydrating device of the present invention;

Figure 11 is an enlarged view of F in Figure 25;

Figure 12 is a cross-sectional view taken along line X-X of Figure 11;

Figure 13 is a schematic view of a gas commutator of the present invention;

Figure 14 is a schematic view of the gas commutator of the present invention;

Figure 15 is a cross-sectional view taken along line c-c of Figure 14;

Figure 5-1 is a schematic view showing the connection of the gas commutator and the gas heater pipe network of the present invention;

Figure 16 is a schematic cross-sectional view taken at z-z in Figure 21;

Figure 17 is a schematic cross-sectional view at ww in Figure 21; Figure 18 is a schematic cross-sectional view of the pyrolysis device of the coal pyrolysis furnace of the present invention (a cross-sectional view at u-u in Figure 21); Figure 20 is a schematic view of the fire tunnel bow of the present invention (cross-sectional view at t-t in Figure 21);

Figure 21 is a schematic view of the coal pyrolysis carbonization apparatus of the present invention (enlarged view of E in Figure 25); Figure 22 is a schematic view of the dry quenching apparatus of the present invention (enlarged view of H in Figure 25);

Figure 23 is a schematic view of the quenching bridge of the present invention;

Figure 24 is a schematic view showing the electrical connection of the industrial control center of the present invention;

Figure 25 is a general schematic view of the coal pyrolysis furnace of the present invention;

Figure 26 is a schematic view of the waste gas deriving device of the present invention (enlarged view of G in Fig. 25).

detailed description

A specific embodiment of a coal pyrolysis furnace of low metamorphic bituminous coal according to the present invention is mainly described in detail below. The first part of the particle size control of low metamorphic bituminous coal

Before dehydration and drying of low metamorphic bituminous coal and lignite, the mixed coal material between 0 and 60 mm can be selected by the particle size controller. The research shows that the low metamorphic bituminous coal and lignite are dehydrated and dried in this particle size range, and the drying is sufficient, and the dehydration efficiency is high. However, this does not constitute a limitation on the low-grade bituminous coal and lignite required for the present invention. The present invention is equally applicable to low-grade bituminous coal and lignite having a particle size of more than 60 mm.

Part II Degradation of low metamorphic bituminous coal

As shown in Fig. 1 and Fig. 2, the hot exhaust gas dehydration device 1 of low metamorphic bituminous coal comprises a casing 11, a water vapor evaporation discharge device 12, an exhaust gas heat exchanger dehydrator 13 and a lower coal bunker 14; The dry cavity 111, the top of the cavity 111 is relatively closed, and only has a coal inlet 112, and the lower coal bunker 14 is disposed at the bottom of the casing 11 to communicate with the cavity 111.

As shown in FIG. 1, FIG. 2 and FIG. 3, the water vapor evaporation discharge device 12 includes a water vapor discharge hole 121, a water vapor hole collide pipe 122, a water vapor connection pipe 123, a condensed water collecting pipe 124, and a plurality of water vapor discharge holes 121. The wall surface of the upper portion of the casing 11 is disposed vertically and horizontally according to a rule, wherein the water vapor hole colluding pipe 122 vertically connects the water vapor discharge holes 121 in series, and the water vapor connection pipe 123 is disposed in the water vapor hole collimating pipe 122. In the upper part, a plurality of rows of water vapor holes are colluded together to facilitate water vapor discharge, and a condensed water collecting pipe 124 is disposed at a lower portion of the water vapor hole collimating pipe 122, and collecting a plurality of water vapor holes through the lower portion of the pipe 122 facilitates Condensate discharge.

As shown in FIG. 1, FIG. 2 and FIG. 4, the exhaust gas heat exchanger dehydrator 13 includes a hot exhaust gas inlet passage 131, a hot exhaust gas buffer chamber 132, a heat dissipation pipe 133, a heat pipe serial connection passage 134, an exhaust gas passage 135, and a low temperature exhaust gas discharge. The passage 136; the hot exhaust gas inlet passage 131 is disposed on the upper upper wall surface of the casing 11 to leave a coal-injecting and water-steam release space of the low metamorphic bituminous coal in the upper portion of the cavity 111 of the casing 11, and the hot exhaust gas buffer chamber 132 is also disposed. On the wall surface of the inlet of the hot exhaust gas entering passage 131, the high-temperature hot exhaust gas is directly prevented from directly influencing the heat radiating pipe 133 and the heat pipe serial connecting passage 134, and the hot exhaust gas is uniformly introduced into the heat pipe serial connecting passage 134 and the heat radiating pipe 133. The heat pipe serial connection passage 134 is made of a metal material and traverses the internal cavity 111 of the casing 11, and connects the hot exhaust gas buffer chamber 132 and the exhaust gas passage 135. The plurality of heat pipe 133 are also made of a metal material. The gap is connected to the heat pipe serial connection passage 134 and penetrates with the heat pipe serial connection passage 134, and the low temperature exhaust gas discharge passage 136 is disposed at the lower portion of the casing 11. Surface transition channel 135 in communication with the exhaust gas.

As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, the casing 11 is square, and the water vapor evaporation discharge device 12 further includes a water vapor collecting pipe 125 and a condensed water connecting pipe 126, and the water vapor discharging holes 121 are arranged in a row in the casing. In two opposite wall faces of the upper portion of the body 11, such as the front wall surface 113, the rear wall surface 114, the water vapor collecting pipe 125 connects the front wall surface 113 and the water vapor collecting pipe 125 in the rear wall surface 114 in series to facilitate water vapor. The concentrated discharge, condensed water connecting pipe 126 connects the front wall surface 113 and the condensed water collecting pipe 124 in the rear wall surface 114 in series to facilitate concentrated discharge of the condensed water.

As shown in Fig. 1, Fig. 2, Fig. 4, Fig. 5, in order to allow the low metamorphic bituminous coal to be sufficiently dehydrated in the cavity 111 of the casing 11, Drying, especially for lignite with large water content, it is necessary to let lignite stay in the cavity 111 of the casing 11 for a long time to fully dewater, so the height of the casing is designed to be high, and it is necessary to carry out multiple groups of low metamorphosed bituminous coal. The plurality of stages are dehydrated for a long time, so that at least one of the exhaust gas passages 135 and at least one of the heat pipe serial passages 134 are provided, and the hot exhaust gas buffer chamber 132 and the first exhaust gas passage 1351 are respectively disposed on two opposite walls of the casing. As shown in FIG. 1 and FIG. 4, the hot exhaust gas buffer chamber 132 is disposed on the left wall surface 115, the first exhaust gas transition passage 1351 is disposed on the right wall surface 116, and the plurality of heat pipe serial passages 134 connect the hot exhaust gas buffer chamber 132 with The first exhaust gas transition passages 1351 are connected together. As shown in FIG. 1 and FIG. 5, the second exhaust gas transition passage 1352 is disposed on the left wall surface 115 below the same side as the hot exhaust gas buffer chamber 132 and the first exhaust gas transition passage 1351. In contrast, the plurality of heat pipe serial passages 134 communicate the first exhaust gas transition passage 1351 with the second exhaust gas transition passage 1352, and the third exhaust gas transition passage is set to 1353 at the first exhaust gas passage. The right wall surface 116 below the same side of the channel 1351 is opposite to the second exhaust gas transition channel 1352, and the plurality of heat pipe serial connecting channels 134 communicate the second exhaust gas transition channel 1352 with the third exhaust gas transition channel 1353. Similarly, the low temperature exhaust gas exhaust passage 136 communicates with the last exhaust gas transition passage 1354.

As shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4 and FIG. 5, the heat pipe 133 has a "U" shape, and at least one of the heat pipe serial connection channels 134, one end of the plurality of U-shaped heat pipe 133 and the previous one. The heat pipe serial connection channel 134 is continuous, and the other end of the U-shaped heat pipe 133 is connected to the adjacent next heat pipe serial connection channel 134, and one end 1341 of the upper heat pipe serial connection channel 134 is in communication with the hot exhaust gas buffer chamber 132. The other end 1342 is closed, one end 1341 of the next heat pipe serial connection channel 134 is closed and the other end 1342 is in communication with the first exhaust gas transition channel 1351. Similarly, between the first exhaust gas transition passage 1351 and the second exhaust gas transition passage 1352, Also, one end 1342 of the upper heat pipe serial connection channel 134 is in communication with the first exhaust gas transition passage 1351 and the other end 1341 is closed, and one end 1342 of the next heat pipe serial connection passage 134 is closed and the other end 1341 and the second exhaust gas transition passage 1352 are closed. The same, and so on.

As shown in FIG. 1 and FIG. 2, the U-shaped heat pipe 133 is arranged in two rows, the U-shaped heat pipe 133 of the upper row is inverted U-shaped, and the U-shaped port and the next row of the U-shaped heat pipe 133 of the previous row are arranged. The U-shaped port of the U-shaped heat pipe 133 is opposite, in order to facilitate the low-deformation bituminous coal drop, the upper row of U-shaped heat pipe 133 has an inverted U-shaped top with a dome shape 1331, and the upper row of U-shaped heat pipe 133 and The outer side of the junction of the heat pipe serial connection channel 134 is also provided as a slope 1333, and the upper surface of the heat pipe serial connection channel 134 connected to the next row of U-shaped heat pipe 133 is also provided as a slope, and the U of the next row of U-shaped heat pipe 133 The inner bay of the type has a shape of 1332.

The dehydration method of the hot exhaust gas dehydration device of the low metamorphic bituminous coal is:

(1) Use a closed belt conveyor 10 (refers to a conveyor that covers the belt with a barrel-shaped shell closed at both ends and closed on all sides to prevent low-degradation bituminous coal from falling, keeping the working environment clean and tidy) The bituminous coal enters the cavity 111 of the casing 11 from the coal inlet 112;

(2) At the same time, the net gas combustion after the high-temperature pyrolysis of low-metamorphic bituminous coal is purified and re-burned The hot exhaust gas generated after the combustion passes from the hot exhaust gas inlet passage 131 into the hot exhaust gas buffer chamber 132, and then flows into the heat dissipation pipe 133 through the heat pipe serial connection passage 134 to dehydrate and dry the low-metamorphic bituminous coal having a large water content, and the hot exhaust gas. After the heat exchange temperature is lowered, the low-temperature hot exhaust gas is discharged from the low-temperature exhaust gas discharge passage 136 through the exhaust gas transition passage 135;

(3) When the low-metamorphic bituminous coal is heated and baked in the cavity of the casing 11 through the heat-dissipating pipe 133, the water in the low-metamorphic bituminous coal is largely evaporated, and the water vapor enters from the upper portion of the cavity 111 of the casing 11. The water vapor discharge hole 121 is further flowed into the water vapor hole string passage pipe 122, and the high temperature water vapor is cascaded from the water vapor hole string passage pipe 122 into the water vapor connection pipe 123 to be discharged together, and a part of the water vapor cooled and cooled becomes The condensed water is discharged from the water vapor hole collimation pipe 122 into the condensed water collecting pipe 124 and discharged together.

(4) The degraded and post-dehydrated bituminous coal finally falls into the lower coal bunker 14 in the lower part of the casing 11, and the dehydrated and dried low-metamorphic bituminous coal in the lower coal bunker 14 is continuously sent to the next high-temperature pyrolysis process through the conveyor. Thus, coal is continuously added to the cavity of the casing 11 by the closed belt conveyor 10 to achieve continuous dehydration drying of the low metamorphosed bituminous coal.

Wherein, the step (2) is further refined to: at the same time, the hot exhaust gas generated after the net gas combustion after the high-temperature pyrolysis of the low metamorphic bituminous coal is recovered and purified, and then burned out from the hot exhaust gas into the passage 131 The hot exhaust gas buffer chamber 132 is inserted into the U-shaped heat pipe 133 from the heat pipe serial connection channel 134 connected to the hot exhaust gas buffer chamber 132 to dehydrate and dry the low-metamorphic bituminous coal with large water content, and the hot exhaust gas is exchanged. The heat temperature is lowered, and then flows from the other heat pipe serial connection channel 134 connected to the U-shaped heat pipe 133 into the first exhaust gas transition passage 1351, and then enters the second exhaust gas transition passage from the first exhaust gas transition passage 1351. In the first and third exhaust gas transition passages 1353 of 1352, the low-temperature exhaust gas exhaust passage 136 is discharged from the last exhaust gas transition passage 1354.

In order to keep the environment clean and tidy, the exhaust gas discharged from the low-temperature exhaust gas exhaust passage 136 is discharged through the existing exhaust gas discharge device 16 (such as "water pipe" and "water mist").

Wherein (3) is further refined, when the low-metamorphic bituminous coal is heated and baked in the cavity of the casing 11 through the heat-dissipating pipe 133, the water in the low-metamorphic bituminous coal is largely evaporated, and the water vapor is discharged from the casing 11 The upper portion of the cavity 111 enters the water vapor discharge hole 121, and then flows into the water vapor hole collimation pipe 122. The high-temperature steam is strung from the water vapor hole collimation pipe 122 into the water vapor connection pipe 123, and the water vapor collecting pipe 125 will be two. The water vapor in the water vapor connection pipe 123 is collected and discharged together, and a part of the cooled and cooled water vapor is turned into condensed water, and then flows from the water vapor hole collimation pipe 122 into the condensed water collecting pipe 124, and the condensed water connecting pipe 126 is two. The condensed water in the condensate collecting pipe 124 is collected and discharged uniformly.

The principle of the hot exhaust gas dehydration device of the low metamorphic bituminous coal is to utilize the waste gas generated by the high temperature pyrolysis of the low metamorphic bituminous coal, which is purified, recovered and purified into a net gas, first burned to the net gas, and then burned with the net gas. The exhaust gas is used to dry-extinguish the smokeless char formed after high-temperature pyrolysis of low-metamorphic bituminous coal, and then further supplement the high-temperature hot exhaust gas after dry quenching and cooling. The gas is burned, and the hot exhaust gas after the combustion of the qi is used to preheat the low metamorphic bituminous coal before dehydration and before the high temperature pyrolysis in the furnace, and then the preheated hot exhaust gas is used to carry out the low metamorphic bituminous coal with a large water content. It is dehydrated and dried at the beginning, so it does not need to increase the additional energy consumption, achieve the purpose of saving energy and reducing consumption, and save cost. The dewatering effect is good, and the water content of the degraded bituminous coal after dehydration can be controlled at about 5%.

Part III Dehydrated low metamorphic bituminous coal plus coal

After dewatering, the low metamorphic bituminous coal will generally drop to normal temperature after being transported, especially in winter, the temperature may be lower, but the high metamorphic bituminous coal temperature is expected to remain at 200 °C during high temperature pyrolysis coking. It is suitable to be between 30CTC, so it is necessary to preheat the low-grade bituminous coal that is put into the furnace before entering the carbonization chamber of the coal pyrolysis furnace.

As shown in Fig. 6, Fig. 9, Fig. 10, the coal mining device 3 of low metamorphic bituminous coal is disposed at the top of the coal pyrolysis furnace 9 of low metamorphic bituminous coal, including the furnace body 91, the coal charging chamber 31, the water vapor discharging device 32, and the preheating The heat generating device 39; the inside of the upper portion of the furnace body 91 forms a coal loading chamber 31; the water vapor discharging device 32 includes a water vapor discharging hole 321, a water vapor hole collo conduit 322, a water vapor collecting pipe 323, and a condensed water collecting pipe 324. The water vapor discharge holes 321 are disposed on the furnace body 91 around the coal charging chamber 31, and the water vapor hole colluding pipes 322 are arranged in series in the longitudinal direction, and the water vapor collecting pipes 323 are disposed in the water vapor hole collimating pipes 322. In the upper part, the upper part of the plurality of water vapor hole collimating pipes 322 is collected to facilitate the water vapor discharge, the condensed water collecting pipe 324 is disposed in the lower part of the water vapor hole collimating pipe 322, and the plurality of water vapor holes are collided with the lower part of the pipe 322 to facilitate the condensed water discharge. .

As shown in Fig. 6 and Fig. 10, the preheating device 39 is placed below the coal charging chamber 31 of the coal feeding device 3, and the preheating device 39 is located at the top of the coal pyrolysis furnace 9.

As shown in FIG. 6, FIG. 7, and FIG. 8, the preheating device 39 mainly includes a furnace body 91, an exhaust gas chamber 391, at least one exhaust gas preheating passage 392, at least one preheater 393, and at least one preheating chamber. 394. Exhaust gas gathering loop 395.

As shown in Fig. 6, Fig. 7, and Fig. 8, the furnace body 91 is made of refractory material, and its outer shape is circular to facilitate space prioritization. The upper portion of the furnace body 91 forms a circular coal bunker 31, and the water vapor discharge device 32. The water vapor discharge hole 321 is disposed on the wall of the furnace body 91 around the annular shape of the coal charging chamber 31, and the water vapor collecting pipe 323 and the condensed water collecting pipe 324 are also formed into corresponding annular pipes. The furnace body 91 is divided into an inner wall 913, a middle wall 912, and an outer wall 911 (shown in FIGS. 7 and 8) at the preheating device 39. The inner wall 913 forms an exhaust chamber 391, and the exhaust chamber 391 The bottom of the bottom is provided with a hot exhaust gas inlet passage 3911, the intermediate wall 912 and the outer wall of the wall 911 form an exhaust gas collecting loop 395, and the exhaust gas collecting loop 395 is provided with an exhaust main outlet 3951, and the exhaust gas preheating passage 392 passes through The inner wall 913 and the middle wall 912 communicate the exhaust chamber 391 with the exhaust gas collecting loop 395, and divide the inner wall 913 and the middle wall 912 into a plurality of preheating chambers 394 (see Fig. 7, Fig. 7). As shown in Fig. 8, in this example, eight exhaust gas preheating passages 392 will separate eight preheating chambers 394), and preheaters 393 are respectively disposed in two adjacent preheating chambers 394; as shown in Fig. 6 and Fig. 7 The inlet 3921 of the exhaust gas preheating passage 392 is located at the bottom of the exhaust chamber 391. The bottom of the exhaust chamber 391 is in communication with the bottom of the preheating chamber 394, and the outlet 3922 of the exhaust gas preheating passage 392 is located at the upper portion of the preheating chamber 394. The upper portion of the preheating chamber 394 is in communication with the exhaust gas collecting loop 395 disposed therein. The exhaust gas enters the bottom of the preheating chamber 394 from the bottom of the exhaust chamber 391, and then goes up into the preheating chamber 394 in the preheating chamber 394 to enter the exhaust gas collecting loop 395, so that heat can be transferred to the preheater 393 more efficiently.

As shown in Fig. 6, Fig. 7, Fig. 8, Fig. 10, Fig. 11, the preheater 393 has a cylindrical shape, including a preheated outer layer 3933, a preheated inner layer 3932, a coal preheating passage 3931, and a preheated inner layer. A coal preheating passage 3931 is formed in the middle of 3932, and an upper portion of the coal preheating passage 3931 communicates with the bottom of the coal loading chamber 31, and an intermediate regulating coal silo 33 is disposed on the furnace body 91 at the lower portion of the coal preheating passage 3931, and the coal preheating passage is provided. The lower part of 3931 communicates with the intermediate regulating coal bunker 33, and the intermediate regulating coal bunker 33 communicates with the carbonization chamber 61 of the coal pyrolysis furnace 9 through the lower coal pass 34, so that the dehydrated low metamorphic bituminous coal falls into the coal from the coal loading bin 31. The preheating passage 3931 is again heated and preheated, and after reaching a certain temperature, enters the carbonization chamber 61 of the coal pyrolysis furnace 9 for high temperature pyrolysis and carbonization, and the low metamorphic bituminous coal heated and preheated in the coal preheating passage 3931 will A small amount of water vapor is generated, and the water vapor enters the coal charging chamber 31 upward, and is discharged from the water vapor discharging hole 321 around the coal loading chamber 31. In addition, a small amount of water vapor may be dispersed in the intermediate regulating coal storage box 33, and is adjusted in the middle. The wall of the furnace body 91 of the coal bunker 33 is also An adjustment coal bunker water vapor outlet 331 is provided for discharging a small amount of water vapor in the intermediate coal bunker 33.

As shown in Fig. 6, Fig. 7, Fig. 8, Fig. 10: The preheated outer layer 3933 is made of refractory heat conductive material, and the preheated inner layer 3932 is made of silicon carbide material with better heat conduction and heat storage performance, and the coal preheating passage 3931 The preheating inner layer 3932 is disposed such that the preheated outer layer 3933 is made of refractory material to facilitate transfer of heat to the preheated inner layer 3932 through the high temperature hot exhaust gas of the exhaust chamber 391. The preheated inner layer 3932 is made of silicon carbide having better heat conduction and heat storage properties. The material is made to store heat from the preheated outer layer 3933 for heat storage, thereby achieving uniform preheating of the low metamorphic bituminous coal in the coal preheating passage 3931.

As shown in FIG. 6 and FIG. 10, in addition, an upper observation hole 3912 is disposed at the top of the exhaust chamber 391, and a lower observation hole is disposed at the bottom of the exhaust chamber 391 to facilitate the technician to observe the operation of the exhaust chamber 391 and the lower portion of the coal pyrolysis furnace 9. Happening.

The working principle of the coal blending device 3 of the low metamorphic bituminous coal is:

(1) The dehydrated low-grade bituminous coal in the coal bunker 14 of the hot exhaust gas dehydration device 1 is added to the coal-adding bin of the coal charging device 3 through the existing conveyor 15 (closed belt conveyor or bucket elevator) 31;

(2) The hot exhaust gas after combustion enters from the hot exhaust gas entering passage 3911, enters the exhaust gas collecting loop 395 through the exhaust gas preheating passage 392, and performs the outer layer of the preheating device 39 between the two preheating chambers 394. Heat transfer, thereby heating and preheating the low-grade bituminous coal falling into the coal preheating passage 3931, heating the water vapor emitted from the preheated low-grade bituminous coal into the coal-carrying chamber 31, and then the water vapor from the coal-filling bin 31 The discharge hole 321 is discharged, and at the same time, the preheating of the low metamorphic bituminous coal and the evaporation of the water vapor can further cool the hot exhaust gas discharged from the exhaust gas chamber 391, and finally discharge from the exhaust main outlet 3951 of the exhaust gas accumulation loop 395; (3), the low-metamorphic bituminous coal heated by the preheating in the (2) is used as the coal into the furnace, and the coal bunker 33 and the lower feed channel 34 are adjusted to enter the carbonization chamber 61 of the coal pyrolysis furnace 9 through the intermediate tank for high-temperature pyrolysis and carbonization. The hot exhaust gas discharged from the main exhaust outlet 3951 in the second (2) communicates with the hot exhaust gas inlet passage 131 of the hot exhaust gas dehydrating device 1 through the corresponding hot exhaust gas connecting pipe 17, and supplies the heat required for the hot exhaust gas dehydrating device 1 to work. Exhaust gas.

In the second step, the hot exhaust gas is discharged from the main exhaust gas outlet 3951, and then the heat is exhausted through the existing tubular heat exchanger, and then the hot exhaust gas is passed through the corresponding hot exhaust gas connecting pipe 17 and the hot exhaust gas dehydrating device 1. The inlet passage 131 communicates with the hot exhaust gas dehydration device 1 to provide the required hot exhaust gas for operation.

Part IV High temperature pyrolysis of low metamorphic bituminous coal (carbonization heating, coke modification, CD quenching)

Section 1 High temperature pyrolysis carbonization heating of low metamorphic bituminous coal

As shown in Fig. 25, the coal pyrolysis carbonization device 6 is disposed in the middle of the furnace body 91, and mainly comprises a carbonization chamber 61, an external gas heating device 64, an internal combustion heating device 67, and a tunnel bow 65; as shown in Fig. 12: carbonization The chamber 61 is composed of an inner annular wall 612 and an outer annular wall 611 of the refractory heat-conducting material, and an annular space is formed around the outer circumference of the carbonized outdoor wall 611. The outer gas heating device 64 is mainly composed of several groups (this example 9). The structure is the same as that of the first gas heater 62, the second gas heater 60, and the gas reversing device 66 (see FIG. 25), and, as shown in FIG. 25, because the carbonization chamber 61 has a high height, the external gas is heated. The device 64 is mainly divided into upper, middle and lower three-stage heating, and each segment has nine sets of the first gas heater 62 and the second gas heater 60 having the same structure.

As shown in FIG. 16, the inside of the carbonization indoor ring wall 612 is an internal combustion heating device 67, and the internal combustion heating device 67 is mainly composed of several groups (the third group of this example) having the same structure of the third gas heater 68 and the fourth gas heater. 69 and quenching exhaust gas heater 63.

As shown in FIG. 11 and FIG. 12, the first gas heater 62 mainly includes a first combustion chamber 621, a first gas inlet branch pipe 622, and a first heat storage heat exchanger 624. The first gas inlet branch pipe 622 passes through. The outer wall of the furnace body 91 opens into the first combustion chamber 621.

As shown in FIG. 12, the first combustion chamber 621 is made of a refractory material, an outer wall of the furnace body 91, and a refractory heat conductive material made of a carbonized outdoor ring wall 611 and an outer fire wall partition 625 to form a relatively closed gas combustion. Fire road.

As shown in FIGS. 11 and 12, the first heat storage heat exchanger 624 includes a first heat storage chamber 626, a first heat storage body 623, a first air inlet branch pipe 627, and a first combustion exhaust gas discharge branch pipe 628; The cavity 626 is disposed in the outer wall of the furnace body 91. The first heat storage body 623 is disposed in the first heat storage chamber 626. The first heat storage chamber 626 is connected to the bottom of the first combustion chamber 621, and the other end is respectively connected to the first wall. The air enters the branch pipe 627 and the first combustion exhaust gas discharge branch pipe 628.

As shown in FIG. 12, a first one-way air valve 629 is disposed between the first air inlet branch 627 and the first heat storage chamber 626, and the first one-way air valve 629 allows air to enter the branch pipe 627 and the first air from the first air. a regenerator 626 flows into the first combustion a first venting valve 620 is disposed between the first combustion exhaust gas exhaust pipe 628 and the first heat storage chamber 626, and the first one-way exhaust gas valve 620 allows the gas combustion exhaust gas to flow through the first combustion chamber 621 The first regenerator 626 is finally discharged from the first combustion exhaust gas discharge branch 628 (of course, using the gas reversing device 66 as described below, when the air main pipe 667 is connected to the first air pipe 6671, the air main pipe 667 and the second The air pipe 6763 is cut off; at the same time, the combustion exhaust gas main pipe 669 is also cut off from the first combustion exhaust gas pipe 6691, and the corresponding combustion exhaust gas main pipe 669 is in contact with the second combustion exhaust gas pipe 6693, which can replace the first one. The action to the air valve 629 and the first one-way exhaust valve 620).

Similarly, as shown in Fig. 12: The second gas heater 60 of the same structure mainly includes a second combustion chamber 601, a second gas inlet branch 602 and a second heat storage heat exchanger 604.

As shown in FIG. 12: the second combustion chamber 601 is made of a refractory material, an outer wall of the furnace body 91, and a refractory heat conductive material, and a carbonized outdoor ring wall 611 and an outer fire wall partition 625 are enclosed to form a relatively closed gas combustion. Fire road.

As shown in Fig. 12, the second gas inlet branch pipe 602 passes through the outer wall of the furnace body 91 to the first combustion chamber 601.

As shown in FIG. 12, the second heat storage heat exchanger 604 includes a second heat storage chamber 606, a second heat storage body 603, a second air inlet branch pipe 607, and a second combustion exhaust gas discharge branch pipe 608, and a second heat storage chamber 606. The second regenerator 603 is disposed in the outer wall of the furnace body 91, and the second regenerator 606 is connected to the bottom of the second combustion chamber 601, and the other end is connected to the second air. The branch pipe 607 and the second combustion exhaust gas discharge branch pipe 608 are provided with a second one-way air valve 609 between the second air inlet branch pipe 607 and the second heat storage cavity 606, and the second one-way air valve 609 allows air from the second air. The inlet pipe 607 and the second heat storage chamber 606 flow into the second combustion chamber 601; a second one-way exhaust valve 600 is disposed between the second combustion exhaust gas discharge branch 608 and the second heat storage chamber 606, and the second one-way exhaust valve 600 allows the gas combustion exhaust gas to flow from the second combustion chamber 601 through the second regenerator 606, and finally from the second combustion exhaust gas discharge branch 608 (of course, using the gas reversing device 66 as described below, when the air main 667 and the Air manifold 6671 is cut off, the air main pipe 667 is connected to the second air pipe 6673, and at the same time, the combustion exhaust gas main pipe 669 and the first combustion exhaust gas branch pipe 6691 are also connected, and the corresponding combustion exhaust gas main pipe 669 and the second combustion exhaust gas main pipe 6693 are also connected. The phase cutoff can serve to replace the second one-way air valve 609 and the second one-way exhaust valve 600).

As shown in FIG. 11 and FIG. 12, a combustion chamber through hole 6251 is provided at the top of the outer fire passage partition 625 between the first combustion chamber 621 and the immediately adjacent second combustion chamber 601, and the combustion chamber through hole 6251 will be the first combustion chamber. 621 and the immediately adjacent second combustion chamber 601 are connected to form a group. In this example, the outer gas heating device 64 has a total of 18 outer fire passage partition walls 625 to form 9 groups of associated combustion groups; in addition, as shown in FIG. Because the carbonization chamber 61 has a high height, the external gas heating device 64 is mainly divided into upper, middle and lower three-stage heating, and each segment has nine sets of the first gas heater 62 and the second gas heater 60 having the same structure.

In summary, the gas heater and the heat storage heat exchange method are;

1. When the gas in the first combustion chamber 621 is burned, the net gas after the waste gas is purified and purified a gas entering branch pipe 622 enters the first combustion chamber 621, the first one-way air valve 629 is opened, allowing air to flow from the first air inlet pipe 627 and the first heat storage chamber 626 into the first combustion chamber 621; A one-way exhaust valve 620 is closed, and the generated hot exhaust gas enters the second combustion chamber 601 through the combustion chamber through hole 6251, and the second heat storage body passes through the second heat storage body 603 in the second heat storage chamber 606. 603, the heat exhaust gas is subjected to endothermic cooling, and the hot exhaust gas becomes a relatively low temperature low-temperature exhaust gas discharged from the second combustion exhaust gas discharge branch pipe 608;

2. When the gas in the second combustion chamber 601 is burned, the net gas that has been purified and purified by the waste gas passes through the second gas into the branch pipe 602 and enters the second combustion chamber 601. The second one-way air valve 609 Turning on, air enters the second combustion chamber 601 from the second air entering the branch pipe 607 through the second heat storage chamber 606, and the air is heated by the heat released by the second heat storage body 603 to become the hot air assisting combustion in the second combustion chamber 601. At the same time, the second one-way exhaust valve 600 is closed, and the hot exhaust gas after the combustion of the gas in the second combustion chamber 601 enters the first combustion chamber 621 through the combustion chamber through hole 6251, and the hot exhaust gas passes through In the first heat storage body 623 in the first heat storage chamber 626, the first heat storage body 623 absorbs heat and cools the hot exhaust gas, and the hot exhaust gas becomes a relatively low temperature low temperature exhaust gas discharged from the first combustion exhaust gas discharge branch pipe 628. ;

3. In the same way, the first step and the second step are alternately cycled.

As shown in FIG. 11 , a combustion chamber temperature monitoring hole 6201 and a combustion chamber observation hole 6202 are further disposed on the outer wall of the furnace body 91. The combustion chamber observation hole 6202 allows the technician to visually observe the gas combustion of each combustion chamber. A combustion chamber temperature table 6201 is provided in the combustion chamber temperature monitoring hole 6201 for temperature monitoring of the combustion chamber to facilitate evaluation of the coal pyrolysis process.

As shown in Figure 24, the combustion chamber temperature table 6203 is connected to the industrial control center 90, and the temperature data of the combustion chamber temperature table 6203 is automatically collected by the industrial control center 90.

As shown in FIG. 13, FIG. 14, and FIG. 15-1, the gas reversing device 66 includes an upper disc 661, a lower disc 662, a rotary commutating motor 663, an air blower 664, a gas blower 665, an exhaust fan 666, and a lower disc 662 respectively. Connected with an air main pipe 667 and a first air pipe 6371, a second air pipe 6673, a gas main pipe 668 and a first gas pipe 6681, a second gas pipe 6683, a combustion exhaust pipe 669 and a second combustion exhaust pipe 6693, a combustion exhaust pipe 6691, wherein the second combustion exhaust pipe 6693 and the first combustion exhaust pipe 6691 are just opposite to the arrangement of the first air pipe 6671 and the second air pipe 6673 and the first gas pipe 6681 and the second gas pipe 6683 ( Figure 14 and Figure 15-1).

As shown in FIG. 13 , 15 and FIG. 15 - 1 , the upper plate 661 is attached to the upper plate 662 , and the upper plate 661 is respectively provided with an air connecting pipe 6672 , a gas connecting pipe 6682 , a combustion exhaust pipe connecting pipe 6692 , and a rotary commutating motor . The 663 drives the upper plate 661 to reciprocally rotate on the lower plate 662, so that the air main pipe 667 continuously switches on and off with the first air pipe 6671 and the second air pipe 6673, and the gas main pipe 668 continuously communicates with the first gas pipe 6681 and the second gas. The pipe branch 6683 performs the switching on and off, and the combustion exhaust gas main pipe 669 continuously and the second combustion exhaust gas pipe 6693 and the first combustion exhaust gas pipe 6691 Switching on and off is performed (as opposed to switching of the first air manifold 6671 and the second air manifold 6673 and the first gas manifold 6681 and the second gas manifold 6683).

As shown in FIG. 11 and FIG. 15-1, two sets of surrounding pipes are further disposed on the outer circumference of the furnace body 91, including a first air surrounding pipe 6674, a first gas surrounding pipe 6684, a first combustion exhaust gas surrounding pipe 6694; The air surrounding pipe 6675, the second gas surrounding pipe 6685, and the second combustion exhaust gas surrounding pipe 6695.

As shown in FIG. 15-1, the first air enclosure 6674 connects the first air branch 6671 and the first air inlet branch 627, and the first air branch 6371, the first air enclosure 6674, and the first air enter the branch 627. The first heat storage chamber 626 and the first combustion chamber 621 form the same passage;

At the same time, the first gas enclosure 6684 connects the first gas manifold 6681 and the first gas inlet branch 622, and the first gas manifold 6681, the first gas enclosure 6684, the first gas inlet branch 622 and the first combustion. Room 621 constitutes the same passage;

At the same time, the first combustion exhaust gas pipe 6694 connects the first gas waste pipe 6681 with the first combustion exhaust gas discharge branch pipe 628, and the first combustion exhaust gas branch pipe 6681, the first combustion exhaust gas discharge branch pipe 628, and the first heat storage cavity. 626 and the combustion chamber 621 form the same passage.

Similarly, the second air enclosure 6675 connects the second air branch 6673 and the second air inlet branch 607, and the second air branch 6673, the second air envelope 6675, the second air enters the branch 607, and the second heat storage. The cavity 606 and the second combustion chamber 601 form the same passage;

At the same time, the second gas sewer 6685 connects the second gas branch 6683 and the second gas inlet branch 602, and the second gas branch 6683, the second gas sewer 6685, the second gas enters the branch 602 and the second The combustion chamber 601 constitutes the same passage;

At the same time, the second combustion exhaust gas pipe 6695 connects the second combustion gas branch pipe 6693 with the second combustion exhaust gas discharge branch pipe 608, and the second combustion exhaust gas branch pipe 6693, the second combustion exhaust gas discharge branch pipe 608, and the second heat storage chamber 606 and the second combustion chamber 601 form the same passage.

In addition, as shown in FIG. 24, the example further includes a gas reversing device controller 906 for controlling the rotary commutating motor 663, air fan 664, gas fan 665, and exhaust fan 666, and the gas reversing device controller 906 is further The industrial control center 90 is connected. Of course, from the principle of electrical control, in this example, the rotary commutating motor 663, air fan 664, gas fan 665 and exhaust fan 666 can also be directly controlled by the industrial control center 90, so the gas reversal is set here. The device controller 906 does not constitute a limitation to the scope of protection of this example.

As shown in Fig. 11, Fig. 15-1, Fig. 12~15, Fig. 24, the heating control method of the external gas heating device 64 is: (1) The industrial control center 90 activates the rotary commutating motor 663 to drive the upper disk 661 to rotate on the lower disk 662, the air main pipe 667 is connected to the first air branch pipe 6671, and the air main pipe 667 and the second air branch pipe 6673 are cut off; meanwhile, the gas The main pipe 668 is also connected to the first gas pipe 6681, and the gas main pipe 668 and the second gas pipe 6668 are in a cut-off state; at the same time, the combustion exhaust gas main pipe 669 is also cut off from the first combustion exhaust gas pipe 6691, and the corresponding combustion exhaust gas main pipe is cut off. 669 is in an on state with the second combustion exhaust pipe 6693.

(2) The industrial control center 90 starts the air fan 664, the gas fan 665 and the exhaust fan 666; the air fan 664 blows the air into the air main pipe 667, and the air sequentially enters the air connecting pipe 6672, the first air pipe 6371, and the first air pipe. 6674, the first air entering branch pipe 627 enters the first heat storage chamber 626, and heats the air by using the heat released by the first heat storage body 623 to enter the first combustion chamber 621; meanwhile, the gas fan 665 passes the waste gas After the product is recovered and purified, the net gas is taken into the gas main pipe 668, and the gas enters the gas connecting pipe 6682, the first gas pipe 6681, the first gas pipe 6684, and the first gas entering branch pipe 622 into the first combustion chamber 621 for combustion. At the same time, since the combustion exhaust gas main pipe 669 is in a phase cut-off state with the first combustion exhaust gas branch pipe 6691, and the corresponding combustion exhaust gas main pipe 669 and the second combustion exhaust gas main pipe 6693 are in an on state, the first combustion chamber 621 is burned after the gas is burned. The exhaust gas can only enter the second combustion chamber through the combustion chamber through hole 6251 in the upper part of the outer fire passage partition 625. 601, in the second regenerator 606, after the second regenerator 603 in the second regenerator 606 performs heat absorption and cooling, and then exits the second combustion exhaust gas exhaust pipe 608, the second combustion exhaust gas pipe 6695, The second combustion exhaust gas pipe 6693 and the combustion exhaust gas main pipe 669 are discharged through the exhaust gas fan 666;

(3) The set combustion time is reached, the industrial control center 90 starts the rotary reversing motor 663 to drive the upper plate 661 to rotate in the reverse direction on the lower plate 662, and the air main pipe 667 is cut off from the first air pipe 6371, and the air main pipe 667 and the second air pipe 6673 are cut off. In the on state, at the same time, the gas main pipe 668 and the first gas pipe 6681 are also cut off, the gas main pipe 668 and the second gas pipe 6668 are connected, and at the same time, the combustion exhaust gas main pipe 669 and the first combustion exhaust gas pipe 6691 are also in phase. Turned on, and the corresponding combustion exhaust gas main pipe 669 and the second combustion exhaust gas branch pipe 6693 are also cut off;

(4) The air blower 664 blows air into the air main pipe 667, and the air sequentially enters the second heat storage chamber 606 through the air connecting pipe 6672, the second air pipe 6673, the second air pipe 6675, and the second air inlet pipe 607. The heat released by the second regenerator 603 in the second regenerator 606 is heated to enter the second combustion chamber 601. At the same time, the gas fan 665 recovers the waste gas and then obtains the net gas. The gas main pipe 668, the gas sequentially enters the gas connecting pipe 6682, the second gas pipe 6683, the second gas pipe 6685, and the second gas entering branch pipe 602 enters the second combustion chamber 601 for combustion, and at the same time, because the combustion exhaust gas is 669 The first combustion exhaust gas pipe 6691 is connected to the first combustion exhaust gas pipe 669 and the second combustion exhaust gas pipe 669 and the second combustion exhaust gas pipe 6693 are in a phase cut state, so that the exhaust gas in the second combustion chamber 601 can only pass through the outer fire passage partition 625. The upper combustion chamber through hole 6251 enters the first combustion chamber 621, passes through the first regenerator 626, and passes through the first regenerator 603 in the first regenerator 626 to perform heat absorption and cooling. Last from the first A combustion exhaust gas discharge branch pipe 628, a first combustion exhaust gas pipe 6694, a first combustion exhaust gas pipe 6691, and a combustion exhaust gas pipe 669 are discharged through the exhaust gas fan 666, so the external gas heating device 64 is burned by the gas combustion in the first combustion chamber 621. The exhaust gas generated from the combustion chamber through hole 6251 enters the second combustion chamber 601, and is cooled by the second heat storage body 603 in the second combustion chamber 601 and the second heat storage chamber 606 to cool down the remaining heat absorption.

On the contrary, the exhaust gas generated after the combustion of the gas in the second combustion chamber 601 enters the first combustion chamber 621 from the combustion chamber through hole 6251, and passes through the first heat storage body 623 in the first combustion chamber 621 and the first thermal storage chamber 626 to the remaining heat. After absorption and cooling, it is discharged.

In summary, the two-in-one operation mode of the gas through the gas reversing device and the heat storage heat exchange operation mode of the regenerative heat exchanger realize the alternate combustion of the two gas heaters, that is, the gas reversing device. 906 sends air and net gas combustion to the combustion chamber of the first gas heater 62, and simultaneously extracts the burned hot exhaust gas from the combustion chamber of the second gas heater 60, and the hot exhaust gas passes through the second gas heater 60. The second heat storage body 603 in the heat storage heat exchanger 604 absorbs heat and cools down to a relatively low temperature exhaust gas exhaust gas; similarly, the gas reversing device 906 sends air to the combustion chamber of the second gas heater 60, The net gas is combusted while sucking the burned hot exhaust gas from the combustion chamber of the first gas heater 62, and the hot exhaust gas is sucked through the first heat accumulator 623 in the first heat storage heat exchanger 624 of the first gas heater 62. The heat-cooling becomes a low-temperature exhaust gas with a relatively low temperature; the method of heating the air by utilizing the residual heat of the exhaust gas after the combustion of the gas not only makes full use of the waste heat of the exhaust gas after the combustion of the gas, but also improves the combustion. The combustion efficiency of the gas in the room can also reduce the exhaust gas after the combustion of the gas to a certain extent, without consuming external energy, thereby saving energy and reducing consumption, and saving coking costs.

Through the automatic heating control of the external gas heating device 64, the labor cost is reduced, the control precision of the coal pyrolysis process is improved, and automation is realized.

As shown in Figs. 16 and 25, the internal combustion heating device 67 is mainly composed of a plurality of groups (the third group of this example) having the same structure of the gas heaters 68, 69 and the quenching exhaust gas heater 63.

As shown in FIG. 21 and FIG. 18, the quenching exhaust gas heater 63 includes an inner fire passage 631, an air supply pipe 632, a primary air supply pipe 6321, a secondary air supply pipe 6322, an air supply ring 633, a center ring wall 634, and an internal fire. A track partition 635, a center passage 638, and an inner fire passage 631 are disposed on the fire tunnel bow 65.

As shown in FIG. 18, the inner fire channel 631 is mainly separated by a carbonized indoor annular wall 612 and a central annular wall 634 located in the carbonization indoor annular wall 612 and at least one inner fire barrier partition 635 into at least one set of main internal fires. Lane 636 and sub-internal fire passage 637, as shown in Fig. 18, in this example, six main inner fire passages 636 and six sub-internal fire passages 637 are juxtaposed to form a total of six sets of inner fire passages 631.

As shown in FIG. 21, the auxiliary inner passage 637 is provided with an upper blocking partition 6371, and the lower inner partition 637 is divided into upper, middle and lower sections, that is, the upper auxiliary inner passage 6375, Middle section of the inner fire channel 6374, the lower section of the inner fire channel 6373; the upper section of the inner fire channel 6375 and the main inner fireway 636 between the fire channel partition 635 is provided with exhaust gas string through hole 6303, the upper section of the inner fire channel 6375 and the main A hot exhaust gas exhaust passage 6306 is opened at the top of the inner fire passage 636, and the hot exhaust gas discharge passage 6306 and the furnace body 91 are provided. The upper exhaust chamber 391 is in communication.

As shown in FIG. 21 and FIG. 18, a fire channel cross hole 6304 is disposed on the fire channel partition 635 between the lower sub-internal fire passage 6373 and the main inner fire passage 636, and the fire train string passage hole 6304 is adjacent to the lower plugging partition plate 6372. As shown in FIG. 18, the six fire tunneling through holes 6304 respectively penetrate the six lower sub-inside fire passages 6373 and the main inner fire passages 636.

As shown in FIG. 21, the center ring wall 634 encloses a central passage 638, and a central partition 638 is provided with a passage partition 6382 at the level of the upper blocking partition 6371, and the central passage 638 is divided into upper and lower portions, that is, The lower portion forms a high temperature combustible exhaust gas into the passage 6383, and the upper portion forms a buffer zone 6381.

As shown in FIG. 19 and FIG. 21, the lower part of the center ring wall 634 is provided with a combustible exhaust gas inlet hole 639 penetrating the high-temperature combustible exhaust gas inlet passage 6383 and the main inner fire passage 636 and the lower sub-internal fire passage 6373. The exhaust buffer 6381 communicates with the main inner fire passage 636 and the exhaust gas inlet hole 6301 of the upper sub-internal fire passage 6375.

As shown in FIG. 21, FIG. 20 and FIG. 19, the air supply ring 633 is disposed on the furnace body 91, and the air supply pipe 632 leads to the air supply ring 633, the primary air supply pipe 6321, the secondary air supply pipe 6322 and the air supply ring. Lane 633 is connected, extending from below the bow 651 of the fireway bow 65 to the interior of the fireway partition 635 between the main and secondary inner fire lanes 636, 637.

As shown in FIG. 21 and FIG. 12, the primary air supply pipe 6321 is disposed inside the fire channel partition 635 between the main and auxiliary inner fire passages 636 and 637, and the outlet 6323 of the primary air supply pipe 6321 is located in the lower sealing partition 6372. Hereinafter, it leads to the main inner fire channel 636 and the lower sub-internal fire channel 6373, respectively;

As shown in FIG. 21, the secondary air supply pipe 6322 is also disposed inside the fire channel partition 635 of the main and auxiliary inner fire passages 636, 637, and the secondary air supply outlet 6324 of the secondary air supply pipe 6322 is located at the upper sealing pipe. The partition 6371 is flush or slightly higher than the upper blocking partition 6371 and leads to the main inner fire passage 636.

As shown in FIG. 21 and FIG. 17, the middle sub-internal fire passage 6374 forms a relatively closed independent gas combustion chamber, and the upper middle sub-internal fire passage 6374 is adjacent to the next middle middle sub-inside fire passage 6374 through the combustion chamber passage 6305. One set, the combustion chamber passage 6305 is located below the upper blocking partition 6371 and passes through a main inner fire passage 636 between the upper middle sub-inside fire passage 6374 and the next middle middle sub-inside fire passage 6374, as shown in the figure. As shown in Fig. 17, six middle sub-internal fire passages 6374 are connected into three groups through three combustion chamber passages 6305.

As shown in FIG. 21, FIG. 16, and FIG. 20, two middle sub-inside fire passages 6374 in the sub-internal fire passage 637 (that is, between the upper and lower blocking partitions 6371 and 6372) are provided with a set of the same structure. The three gas heaters 68 and the fourth gas heaters 69 have the same structure and combustion principle as the first combustion heater 62 and the second combustion heater 60 described above, and the third gas heater 68 includes the third. The combustion chamber 681, the third gas inlet branch pipe 682, the third heat storage chamber 686, the third heat storage body 683, the third air inlet branch pipe 687, and the third combustion exhaust gas discharge branch pipe 688.

As shown in Fig. 21 and Fig. 16, it is to be noted that the third combustion chamber 681 of the third combustion heater 68 is the middle section. The inner fire channel 6374, that is, the relatively closed gas combustion fire passage between the upper and lower blocking partitions 6371 and 6372. As shown in Fig. 21, Fig. 20, Fig. 19, Fig. 17, the third gas inlet branch pipe 682 extends upward from the lower side of the bow 651 of the tunnel bow 65 through the interior of the fire passage partition 635 to the third combustion chamber 681. (ie, the middle sub-internal fire passage 6374), the third regenerator chamber 686 is disposed on the furnace body 91 below the strip 651, and the third regenerator 683 is disposed in the third regenerator chamber 686, and the third regenerator chamber 686 The end passes through the extension channel 6861 from the underside of the strip 651 of the tunnel bow 65, extends upwardly through the interior of the tunnel partition 635 to the bottom of the third combustion chamber 681, and the other end of the third regenerator 686 is respectively connected The three air enters the branch pipe 687 and the third combustion exhaust gas discharge branch pipe 688.

Similarly, the fourth gas heater 69 has the same structure as the third gas heater 68, and is not described here again, wherein the fourth combustion chamber 691 and the third combustion chamber 681 are connected to each other through the combustion chamber passage 6305 to form a group.

Wherein, as shown in FIG. 15-1, the third gas entering branch pipe 682, the third air entering branch pipe 687 and the third combustion exhaust gas discharging branch pipe 688 of the third combustion chamber 681 of the third combustion heater 68 respectively pass the first gas wall The tube 6684, the first air enclosure pipe 6674, and the first combustion exhaust gas enclosure 6694 communicate with the first gas manifold 6681, the first air manifold 6671, and the first combustion exhaust manifold 6691.

As shown in FIG. 15-1, the fourth gas inlet branch 692, the third air inlet branch 697, and the third combustion exhaust gas discharge branch 698 of the fourth combustion chamber 691 of the fourth combustion heater 69 pass through the second gas enclosure 6685, respectively. The second air enclosure pipe 6675 and the second combustion exhaust gas enclosure 6695 are in communication with the second gas manifold 6683, the second air branch 6673, and the second combustion exhaust pipe 6693.

In summary, the third combustion heater 68 and the fourth gas heater 69 have almost the same combustion principle as the first combustion heater 62 and the second combustion heater 60, and are not described herein again.

The method of the internal combustion heating device 67 of the present example is that the upper sub-internal fire passage 6375 and the lower sub-internal fire passage 6373 and the main inner fire passage 636 are high-temperature combustible exhaust gas generated by dry quenching and quenching and combustion heating, and the middle section is internally heated. The fire channel 6374 is a net gas combustion heating which is additionally purified and recovered by using waste gas.

The internal combustion heating device 67 of this example is:

(1) When the high-temperature combustible exhaust gas enters from the high-temperature combustible exhaust gas entering the passage 6383 at the lower portion of the central passage 638, passes through the combustible exhaust gas inlet hole 639 into the main inner fire passage 636 and the lower sub-internal fire passage 6373, and the temperature of the high-temperature combustible exhaust gas that has just entered The higher temperature is generally between 1000 ° C and 1100 ° C, but as the exhaust gas rises in the main inner fire passage 636 and the lower sub-internal fire passage 6373 to perform external heat dissipation, the temperature is lowered;

(2) At this time, the air supplied to the main inner fire passage 636 and the lower sub-internal fire passage 6373 is supplied through the primary air supply pipe 6321, so that the high-temperature combustible exhaust gas obtains oxygen in the air to be burned, after all, the combustible gas in the high-temperature combustible gas The amount is constant and is not sufficient to provide the heat and temperature required for the coal pyrolysis of the carbonization chamber 61; (3) Therefore, when the high-temperature combustible exhaust gas of the lower inner fire passage 6373 passes through the primary air-burning exhaust gas, it is wound into the main inner fire passage 636 through the fire train string passage hole 6304, and the high temperature in the main inner fire passage 636 The combustible gas and the burned exhaust gas are mixed together and rise in the main fire passage 636, and the mixed high-temperature combustible gas and the burned exhaust gas are supplied to the coal in the carbonization chamber 61 through the carbonization chamber annular wall 612 during the ascending process. Pyrolysis provides heat and works externally, and the temperature gradually decreases;

(4) Therefore, in the middle and upper part of the main inner fire passage 636, it is necessary to enter the supplementary air again through the secondary air supply pipe 6322, so that the mixed high-temperature combustible gas and the burned exhaust gas are further burned, which not only gives the carbonization chamber 61 coal heat. The solution provides the required heat and temperature, and can fully burn the high-temperature combustible gas, thereby improving the work efficiency of the high-temperature combustible gas combustion;

(5) In addition, since there is a buffer 6381 between the main inner fire passage 636 and the upper sub-internal fire passage 6375, the upper portion of the center annular wall 634 is provided with a through buffer buffer 6381 and a main inner fire passage 636 and an upper sub-inside fire passage 6375. The exhaust gas enters the hole 6301, and the exhaust passage hole 6303 is disposed on the fire passage partition 635 between the main inner fire passage 636 and the upper sub-internal fire passage 6375, and each of the main inner fire passages 636 and the upper sub-internal fire passages 6375 The two sides are completely interpenetrated, so that the exhaust gas after the second supplemental combustion can be completely mixed together, and the average temperature equalization between the main inner fire passage 636 and the upper sub-internal fire passage 6375 can be given to the upper portion of the entire carbonization chamber 61. Coal pyrolysis provides balanced heat and temperature;

(6), the exhaust gas after the second qi combustion is discharged into the exhaust chamber 391 of the upper part of the furnace body 91 through the main inner fire passage 636 and the hot exhaust gas discharge passage 6306 at the top of the upper auxiliary inner passage 6375;

(7) At the same time, in order to compensate for the insufficient amount of combustible gas in the high-temperature flammable gas, it is insufficient to provide the heat and temperature defects required for the coal pyrolysis of the carbonization chamber 61, and can be generated during the pyrolysis process of the coal. The full utilization of the waste gas provides the third gas burner 68, the third combustion chamber 681 of the fourth gas heater 69, and the fourth combustion chamber 691 with the net gas combustion after the waste gas is recovered and purified, that is, in the middle section. The supplementary heating in the inner fire channel 637 not only provides sufficient heat and temperature for the coal pyrolysis of the carbonization chamber 61, but also increases the utilization rate of the waste gas, reduces the discharge to the atmosphere, avoids air pollution, and protects the environment.

Section 2 Focus Modification

Due to the coke formed by the low-metamorphic bituminous coal after high-temperature pyrolysis in the carbonization chamber or the so-called "anthracite", there is uneven heating and the "smoke-free" block size is not uniform. The charcoal "provides a certain temperature and time so that the "smokeless charcoal" is in full contact with each other and transfers heat to each other, which requires the reforming device 610.

As shown in FIG. 22, FIG. 21, FIG. 19 and FIG. 25, the focal reforming device 610 is disposed in the furnace body on the fire tunnel bow 65, and the focal reforming device 610 includes a lower portion of the carbonization chamber 61 to form a focal reforming chamber 6100. The lower part of the main inner fire passage 636 and the lower inner side fire passage 6373, the central annular wall 634 encloses the high-temperature combustible exhaust gas of the central passage 638 into the lower portion of the passage 6383, and the lower part of the central annular wall 634 is provided with a high-temperature combustible exhaust gas entering passage 6383 and the main The combustible exhaust gas of the inner fire passage 636 and the lower sub-internal fire passage 6373 enters the hole 639. In addition, as shown in FIG. 11, the outer wall of the furnace body 91 is provided with a reforming temperature monitoring hole 6101, and a reforming temperature table 6102 is disposed in the hole of the reforming temperature monitoring hole 6101.

As shown in Figure 24, the industrial control center 90 is electrically connected to the focus reform temperature meter 6102, and the focus reform temperature signal of the auto focus temperature change table 6102 is monitored.

The modification method of the present coke upgrading device is: externally, the outer wall of the furnace body 91 which is insulated by the refractory material is insulated, and the inside is high-temperature combustible exhaust gas from the combustible exhaust gas entering the hole 639 into the lower part and the lower part of the main inner fire channel 636. In the fireway 6373, the heat and temperature of the high-temperature combustible exhaust gas itself are used to provide the heat and temperature required for the heat preservation, especially the temperature of the high-temperature combustible exhaust gas that has just entered is between 1000 ° C and 1100 ° C, which is just suitable for the reforming of the coke, "In the coke modification chamber 6100, a certain period of time remains, and the "anthracite charcoal" block particles are in full contact with each other and heat are transferred to each other to achieve a uniform size of the coke block.

Section 3 Fire Road Bow

As shown in Fig. 21, Fig. 20, Fig. 18, since the carbonization indoor ring wall 612 and the fire passage partition 635 and the center ring wall 634 of the inner combustion heating device 67 are disposed in the furnace chamber, the fire tunnel bow 65 is required to provide the same. The support, while at the same time providing the internal combustion heating device 67 with the laying of various pipes.

As shown in FIG. 21, FIG. 20 and FIG. 19, the fire channel bow 65 is disposed in the furnace chamber below the carbonization chamber 61, the internal combustion heating device 67, and the focal reforming device 610, and mainly includes a plurality of strips 651 and a fire bow. The central ring wall 652, the center of the fire ring center ring 652 forms a high-temperature combustible exhaust passage 653, the 651-end of the strip is fixed on the center ring wall 652 of the fire bow, and the other end is fixed on the furnace body 91, and the strip 651 surrounds the center of the fire bow The center of the ring wall 652 is radially arranged at an angular interval. The fire bow 651 in this example is 12 bows, and the number is the same as the total number of the main and auxiliary inner fire passages 636 and 637 of the internal combustion heating device 67.

As shown in FIG. 21 and FIG. 20, a third gas inlet branch 682 and an extension passage 6861 of the third regenerator 686 are disposed in the wall of a fire bow 651, and are disposed in the wall of another adjacent fire bow 651. The primary air supply pipe 6321 and the secondary air supply pipe 6322 provide convenience for pipe laying of the internal combustion heating device 67. Six walls of the six fire bows 651 are juxtaposed with six third gas inlet branch pipes 682 and a third heat storage. The extension channel 6861 of the cavity 686 and the six primary air supply pipes 6321 and the secondary air supply pipe 6322 which are respectively arranged in parallel in the wall of the other six fire bows 651, so that the various pipes of the internal combustion heating device 67 are arranged in an orderly manner, and are not arranged. put one's oar in.

Section 4 CDQ

After upgrading, the coke temperature is relatively high, generally between 1000 ° C and 1100 ° C. It is necessary to cool the high temperature coke to facilitate transportation and storage. A dry quenching device is required.

As shown in FIG. 22, FIG. 23, FIG. 24, the dry quenching device 7 is disposed under the fire tunnel bow 65, and includes a high temperature quenching chamber 71, a low temperature quenching chamber 72, a quenching bridge bow 73, and a quenching exhaust fan 75; The high temperature quenching chamber 71 is disposed below the fire tunnel bow 65, the top of the high temperature quenching chamber 71 is in communication with the high temperature combustible exhaust passage 653; the quenching bridge bow 73 is disposed in the high temperature quenching chamber 71 and low Between the warm quenching chambers 72, the quenching bridge bow 73 includes a bridge bow 731, a plenum 74, a dry quenching duct 76, and a dry quenching duct 77; 6 bridge bows with a high temperature quenching chamber 71 and low temperature quenching The center of the shaft 72 of the chamber 72 is arranged at a certain angle in the dry quenching air passage 76 to form a radial arrangement, and the middle portion of the bridge arch 731 forms a plenum chamber 74. The plenum chamber 74 is an inverted truncated cone-shaped chamber which is straight and large. The top of the plenum 74 is provided with a hemispherical hood 78, the lower opening 79 of the plenum 74 faces the low temperature quenching chamber 72; the dry quenching duct 77 is disposed in the bridge bow 731, and the dry quenching duct 77 is connected to the set The air chamber 74 has the other end leading to the dry quenching air duct 76. The dry quenching air duct 76 is connected to the quenching exhaust air fan 75 through the air inlet duct 761, and the quenching exhaust air duct 75 passes through the exhaust gas of the duct and the gas reversing device 66. The fan 666 is in communication; a defocusing valve 70 is disposed at the bottom opening 721 of the low temperature quenching chamber 72.

As shown in Fig. 22, a quenching temperature monitoring hole 711 leading to the high temperature quenching chamber 71 is provided on the outer wall 91 of the furnace body, and a quenching temperature table 712 is provided in the quenching temperature monitoring hole.

As shown in FIG. 24, the quenching temperature table 712, the quenching exhaust fan 75 and the out-of-focus valve 70 are electrically connected to the industrial control center 90, and the industrial control center 90 automatically controls the quenching exhaust fan 75 and the out-of-focus valve 70 through quenching The temperature meter 712 monitors the quenching temperature. The quenching temperature table 712, the quenching exhaust fan 75 and the out-of-focus valve 70 are electrically connected to the industrial control center 90 through the quenching device controller 907. Of course, in terms of electrical control principle, the quenching device controller 907 does not constitute in this example. Limitation on the scope of protection of this example.

The dry quenching device of this example uses the low-temperature combustion exhaust gas for dry quenching:

(1) Introducing the first combustion heater 62 of the external gas heating device 64, the second combustion heater 60, and the third gas heater 68 of the internal combustion heating device 67 and the exhaust gas of the fourth gas heater 69 Quenching the exhaust fan 75, because the exhaust gas after the combustion of the gas naturally becomes a low-temperature exhaust gas having a relatively low temperature after being absorbed by the heat storage body;

(2) using the quenching exhaust fan 75 to sequentially circulate the low temperature exhaust gas through the air inlet pipe 761, the dry quenching air duct 76, and the dry quenching air duct 77 into the chamber of the wind collecting chamber 74, and the low temperature exhaust gas is concentrated in the chamber of the wind collecting chamber 74. Because the plenum 74 has a unique structure, the top hood 78 is hemispherical, and the central chamber has an inverted truncated cone structure, so that low temperature exhaust gas is blown out from the lower opening 79 and blown into the low temperature quenching chamber 72. Further, the high temperature quenching chamber 71 is cascaded upward to cool the "anthracite" in the high temperature quenching chamber 71 and from the high temperature quenching chamber 71 to the low temperature quenching chamber 72. In this example, the air cooling form is used. The charcoal "cools down, so it is called dry quenching,

(3) In addition, the dry quenching device 7 of this example can also produce a certain amount of high temperature combustible gas during the dry quenching process, because, first, the low temperature exhaust gas contains a small amount of water and encounters the high temperature after the reformation. "Smoke-free charcoal" will chemically react to produce some flammable gas; second, the low-temperature exhaust gas itself still has some flammable gas that is not fully burned; third, the high temperature after the reforming of the coke is "flame-burning carbon" itself remains a part of flammable The gas, the combustible gas enters the high-temperature combustible exhaust passage 653 in the middle of the center wall 652 of the fire bow, thereby supplying a gas source to the main inner fire passage 636 and the sub-internal fire passage 637 of the internal combustion heating device 67 of the coal pyrolysis furnace 9. The low-temperature exhaust gas in the present example refers to the net gas after the waste gas generated in the pyrolysis process of the low metamorphic bituminous coal is purified and purified by the external gas heating device 67 and the internal combustion heating device 67 of the coal pyrolysis furnace 9. The exhaust gas generated after the combustion of the gas heater is turned into a low-temperature gas after being cooled by the heat storage body in the heat storage chamber, and the dry quenching device has the advantage of replacing the existing inert nitrogen with the incombustibility of the combustion exhaust gas itself. Drying out, simple equipment, low cost and significant economic benefits. Compared with the traditional wet quenching, this example does not cause a large amount of water gas to be discharged into the air because a large amount of water encounters high temperature coke. The air pollution is small, water is saved, and at the same time, the waste generated in the coal pyrolysis process can be generated. The gas is fully utilized.

Section 5 Continuous Coking

In summary, this example is characterized in that the coal pyrolysis carbonization, upgrading, and dry quenching process are integrated into the same coal heating furnace body, so that carbonization, upgrading, and dry quenching can be continuously realized, so the low metamorphic bituminous coal after dehydration and drying is After preheating, carbonization, upgrading, and quenching are finally turned into coke, or it is called "anthracite".

Part V, Comprehensive recycling of coal pyrolysis gases

Chapter 1 Recovery and Utilization of Waste Gas (Export, Condensation, Chemical Production)

The first section of the waste gas export device

The waste gas produced by low-grade metamorphic bituminous coal during pyrolysis of high-temperature coal contains many useful components, and it is necessary to export the waste gas for convenience.

As shown in Fig. 26, the waste gas discharge device 8 includes a waste gas concentration chamber 81, an inner outlet passage 82, an outer outlet passage 83, an outlet main passage 84, and an outlet loop 85. The waste gas concentration chamber 81 is disposed at the top of the carbonization chamber 61. The carbonization chamber 61 is formed in a body; as shown in FIG. 17 and FIG. 26, the inner outlet passage 82 is disposed in the fire passage partition 635, and the inner outlet passage inlet 821 passes through the middle of the inner annular wall 611 to the carbonization chamber 61, and the outlet passage is exhausted. 822 passes through the inner ring wall 611 to the waste gas concentration chamber 81 at the top of the carbonization chamber 61; as shown in Fig. 17, Fig. 26, Fig. 11, the outer outlet passage 83 is provided with the outer wall of the furnace body 91, and the outer and outer outlet passages are opened. 831. The upper outer outlet passage inlet passes through the middle of the outer annular wall 612 to the carbonization chamber 61, and the outer outlet passage outlet 832 passes through the outer annular wall 612 to the waste gas concentration chamber 81 at the top of the carbonization chamber.

As shown in Fig. 26, the lead main passage 84 is disposed in the outer wall of the furnace body 91 of the coal pyrolysis furnace 9, and the lead main passage inlet 841 communicates with the waste gas concentration chamber 81 and extends upward to the outer wall portion where the furnace body 91 is disposed. In the lead-out lane 85, the lead-out loop 85 is provided with a waste gas outlet 851.

As shown in Fig. 26, Fig. 17, and Fig. 11, in this example, since the carbonization chamber 61 has an annular chamber, the waste gas concentration chamber 81 also has an annular chamber, and the six inner outlet passages 82 are respectively disposed in six fire passages. In the partition wall 635, the inner ring wall 611 leads to the carbonization chamber 61, and the six outer outlet passages 83 are respectively disposed in the middle of the outer wall of the furnace body 91 and pass through the outer fire passage partition wall 625 and the outer annular wall 612 to the carbonization chamber. 61, wherein, since the circumference of the carbonization chamber 61 is long, the inner ring wall 611 of the carbonization chamber 61 is outside. The ring wall 612 is respectively provided with a plurality of inner lead-out channel inlets 821 and lower outer lead-out channel inlets 831, upper and outer lead-out channel inlets, and because the height of the carbonization chamber 61 is high, the inner outlet channel inlet 821 and the lower outer outlet channel inlet 831, The upper and outer outlet passages are staggered up and down. As shown in Fig. 26 and Fig. 11, the inner outlet passage inlet 821 is higher than the lower outer outlet passage inlet 831, but lower than the upper outer outlet passage inlet. In this example, the carbonization chamber can be used for this example. The waste gas generated in different sections of 91 is better exported. In addition, there are four large-sized waste gas main passages 84 leading to the outlet loop 85 around the waste gas concentration room 81. The purpose of the installation is to facilitate the export of the waste gas concentration room. A large amount of waste gas in 81.

As shown in Fig. 26, a waste gas temperature monitoring hole 811 leading to the waste gas concentration chamber 81 is provided on the outer wall of the furnace body 91, and a waste gas temperature gauge 812 is placed in the waste gas temperature monitoring hole 811.

As shown in Fig. 24, the waste gas temperature meter 812 is electrically connected to the industrial control center 90, and the industrial control center 90 monitors the temperature in the waste gas concentration chamber 81 through the waste gas temperature table 812.

In this example, the waste gas generated in different sections of the carbonization chamber 61 is respectively derived from the inner channel inlet 821 and the lower outer channel inlet 831, the upper and outer outlet channel inlets, the inner outlet channel 82, and the outer outlet channel 83. In the gas concentration chamber 81, of course, a large amount of waste gas in the carbonization chamber 61 is directly introduced into the waste gas concentration chamber 81, and a large amount of waste gas in the waste gas concentration chamber 81 enters the outlet loop 85 through the outlet main passage 84, and finally from the wasteland The gas outlet 851 is discharged.

Section 2 Waste gas condensing device

As shown in Fig. 26, the temperature of the waste gas discharged from the waste gas outlet is high. In order to facilitate the transportation of the high-temperature waste gas before the chemical production, it is necessary to use a waste gas condensing device 86 to cool the high-temperature waste gas.

Section III Recovery and purification of waste gas

The waste gas after the waste gas is sprayed by the ammonia water of the waste gas condensing device 86, together with the mixture of the coal tar and the ammonia water, is sent to the gas-liquid separation device through the gas collecting pipe for gas-liquid separation, and the mixed liquid after the gas-liquid separation contains various useful ones. Organic ingredients such as phenol oil, naphthalene oil, washing oil, eucalyptus oil, etc. are used for industrial refining of other ancillary products. After gas-liquid separation, the gas is cooled by air cooling, purified by a dry recovery device to become net gas, and the net gas can be stored. Get it for burning.

Chapter II Recycling after Waste Gas Recovery and Purification (combustion, dry quenching, coke upgrading, re-combustion, low-grade nicotine coal preheating, low-metamorphic bituminous dehydration, supplemental air heating)

Section 1 Net Gas Combustion after Waste Gas Purification and Recovery

After the waste gas is recovered and recovered by chemical production, part of the clean gas is sent to the gas heater in the external gas heating device 64 and the gas in the internal combustion heating device 67 described in the pyrolysis carbonization portion of the low metamorphic bituminous coal described above in this example. The heater is burned to provide a heat source for coal pyrolysis.

Section 2 Exhaust gas after combustion of net gas

The net gas is in the gas heater in the external gas heating device 64 and the gas heater in the internal combustion heating device 67 Not fully fully burned, using high-temperature coke to dry-extinguish and cool down the exhaust gas. If the water in the exhaust gas is not fully burned, it will react with high-temperature coke to form water gas, and at the same time take away the residual after high-temperature coke reform. The volatile combustible gas finally forms a high-temperature exhaust gas containing flammable gas components. For details, see the above-mentioned dry quenching section, which will not be described here.

Section III High-temperature combustible exhaust gas after heat-extinguishing

After the dry quenching, the temperature of the high-temperature combustible exhaust gas can reach 1000°C~1100°C, and the coke reforming just needs to be heat-changed and modified in this temperature section. How to carry out the thermal insulation modification, see the above-mentioned dry quenching chapter, here No longer.

Section 4 High-temperature combustible exhaust gas after dry quenching

High-temperature combustible exhaust gas works externally during the reforming process of coke, the temperature will decrease, and will drop to 900 °C ~ 1000 °C, while the temperature required for coal pyrolysis carbonization in carbonization chamber 61 is higher, the average is 1400 °C~ 1500 ° C, so the high-temperature combustible exhaust gas is added to the first air for combustion heating. Since the height of the carbonization chamber 61 is high, and there is a certain amount of combustible components in the high-temperature combustible exhaust gas, it is necessary to increase the number of the middle combustion heating device 67. The three gas heaters 68 and the fourth gas heaters 69 supplement the heat required for pyrolysis of the coal, and finally a second replenishment of the air in the upper portion of the internal combustion heating device 67 allows the high-temperature combustible exhaust gas to be fully combusted and heated. In addition to providing heat source for coal pyrolysis, it can fully burn high-temperature combustible exhaust gas and reduce pollution to the atmospheric environment. For details, please refer to the description of the above-mentioned low-metamorphic bituminous coal pyrolysis carbonization, which will not be repeated here.

Section 5 Heat exhaust gas after qi combustion for preheating low metamorphic bituminous coal

As shown in FIG. 25, the exhaust gas of the burn-out exhaust gas heater 63 of the internal combustion heating device 67 is discharged into the exhaust gas chamber 391, and the low-grade bituminous coal is preheated by the coal adding device 3, as described above. Four parts of the introduction.

Section VI Supplemental Combustion Air Heating

As shown in FIG. 26, FIG. 13, FIG. 11, FIG. 21, another air branch pipe 6641 of the gas reversing device 66 connected to the air fan 664 passes through the tubular heat exchanger 4 and the quenching exhaust gas heater 63. The air supply pipe 632 is turned on, and the air fan 664 blows air from the air branch pipe 6641 into the tubular heat exchanger 4 for heat exchange, and the heated air enters the air supply pipe 632, thereby supplementing the quenching exhaust gas heater 63. The air is heated, and the hot exhaust gas after passing through the coal charging device 3 is sent to the tubular heat exchanger 4 to heat the air entering the quenching exhaust gas heater 63, and no additional heat source is required to heat the air, and no additional cost is required. Further, the waste heat of the preheated hot exhaust gas is further utilized, and hot air is supplied to the quenching exhaust gas heater 63 to sufficiently burn the high temperature combustible exhaust gas in the quenching exhaust gas heater 63.

Section VII Degradation of low metamorphic bituminous coal

After the hot exhaust gas is heated by the supplemental combustion air, the temperature is lowered, and generally can be reduced to below 80 CTC. For such relatively high temperature exhaust gas, part of it can be used for dehydration of low metamorphic bituminous coal. For details, see the introduction of the second part above. , I won't go into details here. Section VIII Saturated Active Coke Regeneration Heating

After the hot exhaust gas is heated by the supplemental combustion air, the temperature is lowered, and generally can be lowered to below 80 CTC. For such a relatively high temperature hot exhaust gas, another portion can be used for regenerative heating of the saturated activated coke.

Part VI: Coal pyrolysis automation control device

In summary, the coal pyrolysis automatic control device includes an industrial control center 90 and a temperature meter and a motor connected to the industrial control center 90.

Part VII: Comprehensive utilization device for low metamorphic bituminous coal

Section 1 High temperature pyrolysis of low metamorphic bituminous coal

A coal pyrolysis furnace and coal pyrolysis method for low-metamorphic bituminous coal are obtained by combining the above-mentioned low-metamorphic bituminous coal with coal, carbonization, coke upgrading, dry quenching and waste gas export.

As shown in FIG. 25 and FIG. 26, a low-metamorphic bituminous coal pyrolysis furnace 9 includes a furnace body 91, a coal charging device 3, a coal pyrolysis carbonization device 6, a coke upgrading device 610, and a CDQ device 7, The waste gas derivation device 8 includes a carbonization chamber 61, an external gas heating device 64, an internal combustion heating device 67, and a tunnel bow 65.

The specific structure of the coal charging device 3 is described in the third part, and the specific structure of the coal pyrolysis carbonization device 6 and its carbonization chamber 61, external gas heating device 64, internal combustion heating device 67, and fire tunnel bow 65 are described. See the fourth part, the specific structure of the waste gas export device 8 is shown in the first section of the first chapter of the fifth part.

A coal pyrolysis method for low metamorphic bituminous coal, the steps are:

(2) The hot exhaust gas after combustion enters from the hot exhaust gas entering passage 3911, enters the exhaust gas collecting loop 395 through the exhaust gas preheating passage 392, and performs the outer layer of the preheating device 39 between the two preheating chambers 394. Heat transfer, thereby heating and preheating the low-grade bituminous coal falling into the coal preheating passage 3931, heating the water vapor emitted from the preheated low-grade bituminous coal into the coal-carrying chamber 31, and then the water vapor from the coal-filling bin 31 The discharge hole 321 is discharged, and at the same time, the preheating of the low metamorphic bituminous coal and the evaporation of the water vapor can further cool the hot exhaust gas discharged from the exhaust gas chamber 391, and finally discharge from the exhaust main outlet 3951 of the exhaust gas accumulation loop 395;

(3) The low-metamorphic bituminous coal which has been preheated by heating is used as the coal into the furnace, and the coal bunker 33 and the lower feed channel 34 are adjusted to enter the carbonization chamber 61 of the coal pyrolysis furnace 9 through the intermediate tank for heating and high-temperature pyrolysis carbonization;

(4) The low-metamorphic bituminous coal completed by high-temperature pyrolysis becomes "smoke-free charcoal" and falls directly into the reforming device 610 for coke upgrading;

(5) using the low-temperature exhaust gas after combustion to enter the "smoke-free charcoal" directly into the coke dry quenching device 7 after the modification is completed. Drying and cooling down, and generating high-temperature combustible hot exhaust gas;

(6) The "smokeless charcoal" after the dry quenching is finally discharged from the bottom opening 721 of the low temperature quenching chamber 72 of the coke dry quenching device 7.

The heating method in the step (3) leads out the waste gas generated by the high-temperature pyrolysis of the low metamorphic bituminous coal in the coal pyrolysis carbonization device 6, and the net gas after the purification and purification by the waste gas is recovered and sent back to the low-quality bituminous coal. The high temperature pyrolysis provides the required heat and temperature, including the external gas heating method and the net gas combustion heating method in the internal combustion heating method, and the external gas heating method and the internal combustion heating method are specifically described in the first chapter of the fourth part. Introduction in the section.

Claims

claims

1. A coal pyrolysis furnace for low-deterioration bituminous coal, characterized by: including a furnace body, a coal adding device, a coal pyrolysis carbonization device, a coke modification device, a dry coke quenching device, and a raw coal gas derivation device; the said adding device The coal device, coal pyrolysis carbonization device, coke modification device and dry coke quenching device are integrally formed on the furnace body from top to bottom; the coal adding device includes a furnace body, a coal adding bunker, a water vapor discharge device, and a preheating device ; The upper part of the furnace body forms a coal bunker; the water vapor discharge device includes a water vapor discharge hole, a water vapor hole connection pipe, a water vapor collection pipe, and a condensed water collection pipe, and the water vapor discharge hole is provided in the coal bunker On the surrounding furnace wall, the water vapor hole connecting pipes connect the water vapor discharge holes in series in the longitudinal direction. The water vapor collection pipe is set at the upper part of the water vapor hole connecting pipe. The upper part of the water vapor hole connecting pipe is brought together to facilitate water vapor. Discharge, the condensed water collection pipe is set at the lower part of the water vapor hole connected pipe, and the lower part of the water vapor hole connected pipe is brought together to facilitate the discharge of condensed water; the preheating device is located below the coal bunker, and the preheating device includes a furnace body , exhaust gas chamber, at least one or more exhaust gas preheating channels, at least one or more preheaters, at least one or more preheating chambers, and exhaust gas collection loops. The furnace body is divided into three layers of inner, middle and outer walls. The inner wall forms an exhaust gas chamber, and a hot exhaust gas inlet channel is provided at the bottom of the exhaust gas chamber. An exhaust gas collection ring is formed between the middle wall and the outer wall. A main exhaust gas outlet and an exhaust gas preheating channel are provided on the exhaust gas collection ring. The exhaust gas chamber is connected to the exhaust gas collection ring through the inner and middle walls, and the inner wall and the middle wall are divided into several preheating chambers. The preheaters are placed in two adjacent ones. In the preheating chamber, a coal preheating channel is formed in the middle of the preheater, and the upper part of the coal preheating channel is connected with the bottom of the coal bunker; the coal pyrolysis carbonization device is set in the middle of the furnace body, and mainly includes a carbonization chamber, an external gas Heating device, internal combustion heating device, fire bow; The carbonization chamber is located above the fire bow and is made of an inner and outer ring wall of refractory and heat-conducting materials to form an annular space. Surrounding the outer periphery of the carbonization outdoor wall ring is an external gas heating device, in which the external gas The heating device is mainly composed of one or more sets of first gas heaters and second gas heaters with the same structure and a gas reversing device. Inside the wall ring of the carbonization chamber is an internal combustion heating device. The internal combustion heating device is mainly composed of one or more sets of structures. The same third gas heater, fourth gas heater and coke quenching exhaust gas heater are composed of the same; the lower part of the coal preheating channel of the preheater is connected with the carbonization chamber of the coal pyrolysis furnace; the coke modification The device is installed in the furnace cavity and is located on the fire path arch. It includes the lower part of the carbonization chamber to form the coke modification chamber, the lower part of the main inner fire path of the internal combustion heating device, the lower auxiliary internal fire path, and the central ring wall of the internal combustion heating device. The high-temperature combustible exhaust gas that surrounds the central channel enters the lower part of the channel. The lower part of the central ring wall is provided with a combustible exhaust gas inlet hole that connects the high-temperature combustible exhaust gas inlet channel with the main internal fire channel and the lower auxiliary internal fire channel. The dry coke quenching device is provided The coal pyrolysis furnace cavity is located below the carbonization chamber, coke reforming device, internal combustion heating device and fire path arch, including a high temperature quenching chamber, a low temperature coke quenching chamber, a coke quenching bridge arch, and a coke quenching exhaust fan; the high temperature The coke quenching chamber is arranged below the fire path arch, and the top of the high-temperature coke quenching chamber is connected to the high-temperature combustible exhaust gas channel; the coke-quenching bridge arch is disposed between the high-temperature coke quenching chamber and the low-temperature coke quenching chamber and includes a bridge arch, a wind collector Chamber, dry quenching air ring, dry quenching air duct, at least one or more bridge bows are arranged in a radial shape in the middle of the dry quenching air ring at a certain angle with the axis center of the high temperature coke quenching chamber and the low temperature coke quenching chamber, and the middle part of the bridge arch forms The air collecting chamber is an inverted frustum with a large diameter at the top and a small diameter at the bottom. shaped chamber, the top of the air collection chamber is provided with a hemispherical hood, and the lower opening of the air collection chamber faces the low-temperature coke quenching chamber; the dry quenching duct is set in the bridge bow, one end of the dry quenching duct leads to the air collection chamber, and the other end Leading to the dry quenching ring, the dry quenching ring is connected to the coke quenching exhaust gas fan through the air inlet pipe; the bottom opening of the low temperature coke quenching chamber is provided with a coke outlet valve; the waste gas outlet device, It includes a waste gas concentration chamber, an inner lead-out channel, an outer lead-out channel, a main lead-out channel, and a lead-out ring channel; the waste gas concentration chamber is arranged on the top of the carbonization chamber of the coal pyrolysis furnace and is integrally formed with the carbonization chamber; The outlet channel is set in the fire channel partition wall, the entrance of the inner outlet channel passes through the inner ring wall of the carbonization chamber and leads to the carbonization chamber, and the outlet of the inner outlet channel passes through the inner ring wall and leads to the raw gas concentration chamber at the top of the carbonization chamber; The lead-out channel is set in the outer wall of the furnace body, including the entrance of the lower outside lead-out channel and the entrance of the upper outside lead-out channel. The entrance of the lower outside lead-out channel and the entrance of the upper outside lead-out channel pass through the outer ring wall of the carbonization chamber and lead to the carbonization chamber. The outlet of the external lead-out channel passes through the outer ring wall and leads to the waste gas concentration chamber at the top of the carbonization chamber; the main lead-out channel is arranged in the outer wall of the furnace body of the coal pyrolysis furnace, and the entrance of the main lead-out channel is connected to the waste gas concentration chamber. Then it extends upward into the derivation loop on the upper part of the outer wall of the furnace body, and the derivation loop is equipped with a raw gas outlet.

2. A coal pyrolysis furnace for low-deterioration bituminous coal according to claim 1, characterized in that: the furnace body at the lower part of the coal passing preheating channel of the preheater is provided with an intermediate regulating coal bunker, and the coal passing The lower part of the preheating channel is connected to the intermediate regulating coal bunker, and the intermediate regulating coal bunker is connected to the carbonization chamber of the coal pyrolysis furnace through the unloading coal channel.

3. A coal pyrolysis furnace for low-deterioration bituminous coal according to claim 1, characterized in that: the first gas heater of the external gas heating device includes a first combustion chamber, a first gas inlet branch pipe and a third gas heater. A heat storage heat exchanger, the first combustion chamber is a relatively closed gas combustion fire channel, the first gas enters the branch pipe and leads to the bottom of the first combustion chamber, the first heat storage heat exchanger includes a first heat storage chamber, a first heat storage chamber The heating body, the first air inlet branch pipe and the first combustion exhaust gas discharge branch pipe, the first heat storage cavity is arranged in the furnace outer wall, the first heat storage body is arranged in the first heat storage cavity, and one end of the first heat storage cavity leads to the first heat storage cavity. The bottom of a combustion chamber has a first air inlet branch pipe and a first combustion exhaust gas discharge branch pipe respectively connected to the other end; the second gas heater includes a second combustion chamber, a second gas inlet branch pipe and a second heat storage heat exchanger , the second gas inlet branch pipe leads to the bottom of the second combustion chamber, the second heat storage heat exchanger includes a second heat storage chamber, a second heat storage body, a second air inlet branch pipe and a second combustion exhaust gas discharge branch pipe, the second heat storage heat exchanger includes The heat chamber is also arranged in the outer wall of the furnace, and the second heat storage body is arranged in the second heat storage chamber. One end of the second heat storage chamber leads to the bottom of the second combustion chamber, and the other end is connected to the second air inlet branch pipe and the second heat storage chamber respectively. Combustion exhaust gas discharge branch pipe; a combustion chamber through hole is provided between the first combustion chamber and the second combustion chamber; the gas reversing device includes an upper plate, a lower plate, a rotating reversing motor, an air fan, and a gas fan , exhaust gas fan, the lower plate is respectively connected with an air main pipe, a first air branch pipe, a second air branch pipe, a gas main pipe, a first gas branch pipe, a second gas branch pipe, a combustion exhaust gas main pipe and a second combustion exhaust gas branch pipe. , the first combustion exhaust gas branch, wherein the second combustion exhaust gas branch and the first combustion exhaust gas branch are exactly reversed with the first air branch, the second air branch, and the first gas branch and the second gas branch; the upper plate The upper plate is rotated and fitted above the lower plate, and the upper plate is respectively provided with air connecting pipes, gas connecting pipes, and combustion exhaust gas connecting pipes. The rotary commutation motor is connected to the upper plate. The plate transmission connection drives the upper plate to reciprocate on the lower plate; wherein, the first air branch pipe and the first air inlet branch pipe are connected, and at the same time, the first gas branch pipe and the first gas inlet branch pipe are connected, and at the same time , the first combustion exhaust gas branch pipe is connected to the first combustion exhaust gas discharge branch pipe; similarly, the second air branch pipe is connected to the second air inlet branch pipe, and at the same time, the second gas enclosure pipe connects the second gas branch pipe and the second gas inlet branch pipe. The branch pipes are connected, and at the same time, the second combustion exhaust gas branch pipe is connected with the second combustion exhaust gas discharge branch pipe.

4. A coal pyrolysis furnace for low-deterioration bituminous coal according to claim 1, characterized in that: the coke quenching exhaust gas heater of the internal combustion heating device includes an internal fire channel, an air supply pipe, a primary gas supply pipe, The secondary air supply pipe, the air supply ring, the central ring wall, the inner fire channel partition wall, and the central channel. The inner fire channel mainly consists of the carbonization indoor ring wall and the center ring wall located in the carbonization indoor ring wall and at least one inner ring wall. The fire channel partition wall is divided into at least one group of juxtaposed main internal fire channels and auxiliary internal fire channels; an upper blocking partition and a lower blocking partition are provided in the auxiliary internal fire channel, and the auxiliary internal fire channel is divided into an upper and a lower blocking partition. The middle and lower sections are the upper section auxiliary internal fire channel, the middle section auxiliary internal fire channel and the lower section auxiliary internal fire channel. The fire channel partition wall between the upper section auxiliary internal fire channel and the main internal fire channel is provided with exhaust gas collusion hole, a hot exhaust gas discharge channel is provided at the top of the upper section of the auxiliary internal fire channel and the main internal fire channel, and a fire channel connection hole is provided on the fire channel partition wall between the lower section of the auxiliary internal fire channel and the main internal fire channel; the center The surrounding wall forms a central channel, and a channel partition is set in the central channel flush with the upper blocking partition to separate the central channel into upper and lower parts, that is, the upper part forms a buffer zone and the lower part forms a high-temperature combustible exhaust gas to enter. The upper part of the central ring wall is provided with an exhaust gas inlet hole that connects the buffer zone with the main internal fire channel and the upper auxiliary internal fire channel. The lower part of the central ring wall is equipped with a high-temperature combustible exhaust gas inlet channel that connects with the main internal fire channel and the lower auxiliary internal fire channel. The combustible waste gas enters the hole, the air supply loop is arranged on the outer wall of the furnace, the air supply pipe is connected with the air supply loop, and the primary air supply pipe and the secondary air supply pipe are connected with the air supply loop. , extending upward from the bottom of the fire channel bow to the inside of the fire channel partition wall between the main and auxiliary internal fire channels. The outlet of the primary air supply pipe is located below the lower sealing partition and leads to the main internal fire channel respectively. The fire channel and the lower section auxiliary internal fire channel, the secondary gas supply outlet of the secondary gas supply pipe leads to the main internal fire channel; the middle section auxiliary internal fire channel forms a relatively closed independent gas combustion chamber, and the upper middle section auxiliary internal fire channel The combustion chamber channel is connected to the next middle section auxiliary internal fire channel through the combustion chamber channel. The combustion chamber channel is located under the upper blocking partition and starts from the middle section between the previous middle section auxiliary internal fire channel and the next middle section auxiliary internal fire channel. Passing through a main internal fire channel, the third gas heater includes a third combustion chamber, a third air inlet branch pipe, a third gas inlet branch pipe, a third regenerator chamber, a third regenerator, a third air inlet pipe The branch pipe and the third combustion exhaust gas discharge branch pipe, the third combustion chamber is the middle section of the auxiliary internal fire channel, and the third gas inlet branch pipe passes under the fire channel arch and extends upward through the internal passage of the fire channel partition wall. Towards the third combustion chamber, that is, the middle section of the auxiliary internal fire channel, the third regenerative cavity is arranged on the furnace body below the bow, the third regenerative body is placed in the third regenerative cavity, and one end of the third regenerative cavity extends through The channel passes under the bar of the fire path arch and extends upward through the interior of the fire path partition wall to the bottom of the third combustion chamber. The other end of the third regenerative chamber is connected to a third air inlet branch pipe and a third combustion exhaust gas exhaust branch pipe respectively. ; Similarly, the structure of the fourth combustion heater is the same as that of the third burner, in which the fourth combustion chamber and the third combustion chamber are connected through the combustion chamber channel to form an associated group.

5. A coal pyrolysis furnace for low-deterioration bituminous coal as claimed in claim 1, characterized in that: the external gas heating device is mainly divided into upper, middle and lower three-stage heating, and each section is composed of multiple groups of the same structure. It consists of a first gas heater and a second gas heater.