WO2014166395A1

WO2014166395A1 - Coal gangue pyrolysis device

Info

Publication number: WO2014166395A1
Application number: PCT/CN2014/075018
Authority: WO
Inventors: 王新民
Original assignee: 山西鑫立能源科技有限公司
Priority date: 2013-04-10
Filing date: 2014-04-09
Publication date: 2014-10-16
Also published as: CN103215084A; CN103215084B

Abstract

A coal gangue pyrolysis device comprises a pyrolysis gasification chamber (61), an external gas heating device (64), an inner gas heating device (67), and a gas reversing device (661). The pyrolysis gasification chamber (61) is an annular space formed by an inner ring wall and an outer ring wall (612, 611). The external gas heating device (64) surrounds the periphery of a ring of the outer ring wall of the pyrolysis gasification chamber (61). The inner gas heating device (67) is arranged in a ring of the inner ring wall. The external gas heating device (64) is formed by multiple groups of first gas heaters (62) and second gas heaters (60) with a same structure. The first gas heater (62) comprises a first combustion chamber (621), a first gas inlet branch pipe (622) and a first heat-storage heat exchanger (624). The second gas heater (60) has the same structure as the first gas heater (62). The inner gas heating device (67) is mainly formed by multiple groups of third gas heaters (68) and fourth gas heaters (69) with a same structure. According to the device, the combustion is more efficient by using alternate combustion and heat-storage heat exchange of clean gas.

Description

Coal gangue pyrolysis device

技术领域Technical field

The invention relates to a technology for pyrolysis gasification of coal gangue, in particular to a coal gangue pyrolysis device.

Background technique

Coal gangue - the stone selected from the raw coal is the waste residue of the coal preparation plant. It is not easy to handle. China has hundreds of millions of tons of coal gangue that cannot be used every year, and it still continues to discharge about 100Mt per year, not only accumulating land, but also It can spontaneously pollute the air or cause fires, causing serious environmental pollution.

Due to billions of years of coalification, coal gangue contains 20-30% of carbon, oil and gas, of which oil and gas account for 11-15% and carbon accounts for 7-15%. Pyrolysis and gasification of coal gangue to obtain oil and gas products and 70-80% solid products (components of silica, alumina, ferric oxide, titanium dioxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, The composition of phosphorus pentoxide, manganese oxide and sulfur trioxide is a clinker of silicon-aluminum refractory materials, which has economic value and social benefits.

The inventors have long studied the physical properties of coal gangue and the pyrolysis gasification process of high temperature coal, and innovated a new set of high-temperature pyrolysis gasification integrated process and device for coal gangue.

Summary of the invention

The invention provides a coal gangue pyrolysis device, which utilizes the net gas recovered and purified by the waste gas generated in the coal gangue pyrolysis gasification process for combustion, and provides heat and temperature required for pyrolysis gasification of coal gangue to ensure coal The pyrolysis and gasification of the meteorites proceed smoothly, saving the cost of pyrolysis and gasification.

The technical solution adopted to achieve the above objectives is:

The coal gangue pyrolysis device is arranged in the middle of the furnace body, and mainly comprises a pyrolysis gasification chamber, an external gas heating device, an internal gas heating device, a gas reversing device, a central support bow, and the pyrolysis gasification chamber is made of fireproof The inner and outer ring walls of the heat-conducting material form an annular space surrounding the outer periphery of the pyrolysis gasification outdoor wall ring as an external gas heating device, and the pyrolysis gasification indoor ring wall ring is an internal gas heating device; the external gas heating The device is mainly composed of a plurality of groups of structures associated with a first gas heater and a second gas heater. The first gas heater mainly comprises a first combustion chamber, a first gas inlet branch pipe and a first heat storage heat exchanger. The first gas entering branch pipe passes through the outer wall of the furnace to the first combustion chamber, and the first combustion chamber is made of a furnace outer wall made of refractory material and a refractory heat conductive material to form a pyrolysis gasification outdoor ring wall and an outer fire channel. The wall encloses a relatively closed gas combustion fire passage, the first heat storage heat exchanger comprising a first heat storage chamber, a first heat storage body, a first air inlet branch pipe and a first combustion exhaust gas discharge branch pipe, first Heat storage chamber In the outer wall of the furnace, the first heat storage body is disposed in the first heat storage chamber, one end of the first heat storage chamber leads to the bottom of the first combustion chamber, and the other end is respectively connected with the first air inlet branch pipe and the first combustion exhaust gas discharge branch pipe The second gas heater also has a second combustion chamber, a second gas inlet branch pipe and a second heat storage heat exchanger, and the first combustion chamber and the immediately adjacent second combustion chamber are externally fired. The top of the partition wall is provided with a combustion chamber through hole, and the combustion chamber through hole connects the first combustion chamber and the immediately adjacent second combustion chamber to form a group; the internal gas heating device is mainly composed of several groups having the same structure. The third gas heater and the fourth gas heater have a structure almost identical to that of the associated first combustion heater and the second combustion heater, except that the third combustion chamber of the third gas heater is made of refractory heat conductive material. The pyrolysis gasification indoor ring wall and the inner fire channel partition wall enclose a relatively closed gas combustion fire passage, and the third gas entering branch pipe passes from the lower side of the central support bow to the third combustion chamber, Three heat storage chamber Positioned on the furnace body below the bow, the third heat storage body is placed in the third heat storage chamber, and one end of the third heat storage chamber extends from the lower side of the bow of the central support bow to the third through the extension passage At the bottom of the 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, and the top of the inner fire passage partition wall between the third combustion chamber and the immediately adjacent fourth combustion chamber a combustion chamber passage is provided, and the combustion chamber passage connects the third combustion chamber and the immediately adjacent fourth combustion chamber to form a group; the gas reversing device comprises an upper disc, a lower disc, a rotary reversing motor, an air blower, The gas fan and the exhaust fan are respectively connected with an air main pipe and a first air pipe, a second air pipe, a gas main pipe, a first gas pipe, a second gas pipe, a combustion exhaust pipe and a second combustion exhaust pipe, a first combustion exhaust gas branch, wherein the second combustion exhaust gas pipe and the first combustion exhaust gas pipe are exactly opposite to the first air pipe and the second air pipe and the first gas pipe and the second gas pipe are disposed, and the upper plate Fitted on the upper part of the lower plate, the upper plate is respectively provided with an air connection pipe, a gas connection pipe, a combustion exhaust pipe connection pipe, and the rotary reversing motor drives the upper plate to reciprocate on the lower plate to realize the air main pipe continuously with the first air pipe and the second The air pipe is switched on and off, and the gas main pipe is continuously connected and switched off with the first gas pipe and the second gas pipe, and the combustion exhaust pipe is continuously connected and disconnected with the second combustion exhaust pipe and the first combustion exhaust pipe. Conversion Wherein, the first air branch pipe is connected to the first air inlet branch pipe and the third air inlet branch pipe, and at the same time, the first gas pipe is connected to the first gas inlet branch pipe and the third gas inlet branch pipe, at the same time, The first combustion exhaust gas pipe is connected with the first combustion exhaust gas discharge branch pipe and the third combustion waste gas discharge branch pipe; similarly, the second air pipe and the second air inlet pipe and the fourth air inlet branch pipe are connected, and at the same time, the second gas The branch pipe and the second gas enter the branch pipe, and the fourth gas enters the branch pipe, and at the same time, the second combustion gas pipe is coupled with the second combustion exhaust gas discharge branch pipe and the fourth combustion exhaust gas discharge branch pipe.

The coal gangue pyrolysis device further comprises two sets of surrounding pipes disposed on the outer circumference of the furnace body, including a first air surrounding pipe, a first gas surrounding pipe, a first combustion exhaust gas surrounding pipe, a second air surrounding pipe and a second gas a first combustion pipe; the first air pipe is connected to the first air inlet pipe and the third air inlet pipe through the first air pipe, and the first gas pipe passes through the first The gas sewer pipe and the first gas enter the branch pipe, and the third gas enters the branch pipe. At the same time, the first combustion exhaust gas pipe passes through the first combustion exhaust gas pipe and the first combustion exhaust gas discharge branch pipe and the third combustion exhaust gas discharge branch pipe. Similarly, the second air pipe is connected to the branch pipe through the second air pipe and the second air, and the fourth air pipe is connected to the branch pipe. Meanwhile, the second gas pipe enters the branch pipe through the second gas pipe and the second gas pipe, and the fourth The gas enters the branch pipe connection, and at the same time, the second combustion gas pipe is connected to the second combustion exhaust gas discharge branch pipe and the fourth combustion exhaust gas discharge branch pipe through the second combustion exhaust gas pipe.

a first one-way air valve is disposed between the first air inlet branch of the first gas heater and the first heat storage chamber, and the first one-way air valve allows air to enter the tube from the first air and the first heat storage The cavity flows into the first combustion chamber; a first one-way exhaust valve is disposed between the first combustion exhaust gas discharge branch pipe and the first heat storage cavity, and the first one-way exhaust gas valve allows the gas combustion exhaust gas to flow through the first combustion chamber through the first The heat storage chamber is finally discharged from the first combustion exhaust gas discharge branch; the second air inlet branch and the second heat storage chamber of the second gas heater are provided with a second one-way air valve, and the second one-way air The valve allows air to flow from the second air inlet pipe and the second heat storage chamber to the second combustion chamber; A second one-way exhaust valve is disposed between the second combustion exhaust gas discharge branch pipe and the second heat storage chamber, and the second one-way exhaust gas valve allows the gas combustion exhaust gas to flow from the second combustion chamber to the second heat storage chamber, and finally from the second The second combustion gas exhaust pipe is discharged; the third gas heater and the fourth gas heater also include a one-way air valve and a one-way exhaust valve, which are disposed in the same manner as the first gas heater and the second gas heater.

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

The internal gas heating device is mainly divided into upper and lower two-stage heating, and each segment has six sets of third gas heaters and fourth gas heaters having the same structure.

The invention can realize the alternating combustion of two gas heaters and the heat storage heat exchange of the two sets of heat storage heat exchangers by the two-in-one operation mode of the gas, so that the gas heater is more efficiently burned and the coal gangue is in the coal thermal gasification. The required temperature and heat make the coal gangue pyrolysis and gasification go smoothly.

DRAWINGS

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

Figure 1 is a schematic view of a coal gangue pyrolysis gasification furnace of the present invention;

Figure 2 is a schematic view of a gas commutator of the present invention;

Figure 3 is a schematic view of the upper plate of the gas commutator of the present invention;

Figure 4 is a schematic view of the lower tray of the gas commutator of the present invention;

Figure 5 is a cross-sectional view taken along line c-c of Figure 3;

Figure 6 is a schematic view showing the connection of the gas commutator and the gas heater pipe network of the present invention;

Figure 7 is a schematic cross-sectional view of the t-t in Figure 1;

Figure 8 is a schematic cross-sectional view taken along line u-u of Figure 1;

Figure 9 is a schematic cross-sectional view taken along line v-v of Figure 1;

Figure 10 is a schematic view of the central support bow of the present invention (a schematic cross-sectional view taken at x-x in Figure 1);

Figure 11 is a view of the steam passage of the present invention (a schematic cross-sectional view at y-y in Figure 1);

Figure 12 is a schematic view of a steam packet line of the present invention (a schematic cross-sectional view taken at z-z in Figure 1);

Figure 13 is a schematic view showing the electrical connection of the industrial control center of the present invention.

detailed description

Specific examples of the comprehensive utilization of the coal gangue pyrolysis gasification of the present invention are mainly described below.

Part I Coal Gangue Particle Size Control

The coal gangue is processed into a particle size of 0 to 20 mm, and the coal gangue scrap is dehydrated and dried in this particle size range, and the drying is sufficient, and the dehydration efficiency is high, but this does not constitute a limitation on the coal gangue required for the present invention.

Part II Coal gangue conditioning and dehydration

The hot exhaust gas generated after the combustion of the net gas produced by the high-temperature pyrolysis of coal gangue and the waste gasification produced by the water gas reaction is used for the crushed coal gangue pellets to be subjected to humidity conditioning and dehydration before being charged into the furnace.

In order to keep the environment clean and tidy, after the humidity is dehydrated, the exhaust gas is discharged through the water and purified.

Part III High temperature pyrolysis gasification of coal gangue (pyrolysis heating, water gas generation)

Section 1 High temperature pyrolysis heating of coal gangue

As shown in FIG. 1, the coal gangue pyrolysis device 6 is disposed in the middle of the furnace body 91, and mainly includes a pyrolysis gasification chamber 61, an external gas heating device 64, an internal gas heating device 67, a gas reversing device 66, and a central support bow 65. As shown in FIG. 8 and FIG. 9 , the pyrolysis gasification chamber 61 is formed of an annular space by the inner and outer annular walls 612 and 611 of the refractory heat conductive material, and is heated by the outer gas around the outer circumference of the pyrolysis gasification outdoor wall 611 ring. The device 64, the pyrolysis gasification indoor ring wall 612 is an inner gas heating device 67, wherein the outer gas heating device 64 is mainly a plurality of groups (the group 9 of this example) having the same structure of the first gas heater 62 and the second gas. The heater 60 is constructed (see FIG. 1 and FIG. 2), as shown in FIG. 1, FIG. 8, and FIG. 9. Since the pyrolysis gasification chamber 61 has a high height, the external gas heating device 64 is mainly divided into upper, middle and lower three. Segment heating, each segment has 9 sets of first gas heater 62 and second gas heater 60 with the same structure, and the internal gas heating device 67 is mainly divided into upper and lower two-stage heating, and each group has 6 sets of the same structure. The combined third gas heater 68 and the fourth gas heater 69 are configured.

As shown in FIG. 1 and FIG. 9, 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, and the first gas inlet branch pipe 622 passes through the furnace. The outer wall of the body 91 opens into the first combustion chamber 621.

As shown in FIG. 1 and FIG. 9, the first combustion chamber 621 is surrounded by a refractory material, an outer wall of the furnace body 91, and a refractory and heat-conductive material, which is composed of a pyrolysis gasification outdoor ring wall 611 and an outer fire channel partition wall 625. A relatively closed gas burning fire.

As shown in FIG. 1 and FIG. 9, 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 heat chamber 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. One end of the first heat storage chamber 626 leads 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. 9, a first one-way air valve 629 is provided 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 tube 627 from the first air and the first A heat storage chamber 626 flows into the first combustion chamber 621; a first one-way exhaust valve 620 is disposed between the first combustion exhaust gas exhaust branch 628 and the first heat storage chamber 626, and the first one-way exhaust valve 620 allows the gas to burn the exhaust gas. Flowing from the first combustion chamber 621 through the first regenerator 626, and finally discharging from the first combustion exhaust outlet branch 628 (of course, using the gas reversing device 66 as described below, when the air main 667 is connected to the first air branch 6671 The air main pipe 667 and the second air pipe 6763 are 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. It can function as a substitute for the first one-way air valve 629 and the first one-way exhaust valve 620).

Similarly, as shown in FIG. 9, 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. 9, the second combustion chamber 601 is made of a refractory material, an outer wall of the furnace body 91, and a refractory heat-conducting material, and the pyrolysis gasification outdoor ring wall 611 and the outer fire channel partition wall 625 are relatively closed. The gas burns the fire.

As shown in FIG. 1 and FIG. 9, the second gas entering branch pipe 602 passes through the outer wall of the furnace body 91 to the first combustion chamber 601.

As shown in FIG. 9, 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 heat storage body 603 is disposed in the second heat storage chamber 606. The second heat storage chamber 606 has one end leading to the bottom of the second combustion chamber 601, and the other end is connected to the second air inlet branch. 607 and the second combustion exhaust gas discharge branch pipe 608, between the second air inlet branch pipe 607 and the second heat storage cavity 606 is provided with a second one-way air valve 609, the second one-way air valve 609 allows air to enter from the second air The tube 607 and the second regenerator 606 flow into the second combustion chamber 601; A second one-way exhaust valve 600 is disposed between the second combustion exhaust gas exhaust pipe 608 and the second heat storage chamber 606, and the second one-way exhaust gas valve 600 allows the gas combustion exhaust gas to flow from the second combustion chamber 601 through the second heat storage. The chamber 606 is finally discharged from the second combustion exhaust gas discharge branch pipe 608 (of course, using the gas reversing device 66 as described below, when the air main pipe 667 is disconnected from the first air branch pipe 6671, the air main pipe 667 is connected to the second air branch pipe 6673. 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 branch pipe 6693 are also cut off; instead, the second one-way air valve 609 can be replaced. And the function of the second one-way exhaust valve 600).

As shown in FIG. 1 and FIG. 8, a top portion of the outer fire passage partition 625 between the first combustion chamber 621 and the immediately adjacent second combustion chamber 601 is provided with a combustion chamber through hole 6251, 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 external gas heating device 64 has a total of 18 outer fire passage partition walls 625 partition walls to form 9 groups of associated combustion groups; As shown in the figure; because the pyrolysis gasification chamber 61 has a high height, wherein the external gas heating device 64 is mainly divided into upper, middle and lower three-stage heating, each group has 9 groups of the same structure and associated with the first gas heater 62, the second The gas heater 60 is constructed.

As shown in FIG. 1 , each combustion chamber is further provided with a combustion chamber temperature monitoring hole 6201 and a combustion chamber observation hole 6202 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. In the case, 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 FIG. 13, the combustion chamber temperature table 6203 is associated with 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. 2, FIG. 3, FIG. 4, FIG. 5 and FIG. 6, 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 is 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 gas main pipe 669 and a second combustion exhaust gas pipe 6693. a first combustion exhaust gas branch 6691, wherein the second combustion exhaust gas branch 6693 and the first combustion exhaust gas branch 6691 and the first air branch pipe 6671 and the second air branch pipe 6673 and the first gas pipe 6681 and the second gas pipe 6681 are disposed. Reversed (shown in Figure 3, Figure 4, Figure 6).

As shown in FIG. 3, FIG. 4, FIG. 5 and FIG. 6, 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, and a combustion exhaust pipe connecting pipe 6692. The motor 663 drives the upper disk 661 to reciprocally rotate on the lower disk 662 to realize 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 The two gas manifolds 6683 are switched on and off, and the combustion exhaust gas controller 669 is continuously switched on and off with the second combustion exhaust gas branch 6693 and the first combustion exhaust gas branch 6691 (with the first air branch 6671 and the second air branch 6673 and The switching of the first gas branch 6681 and the second gas branch 6683 is just the opposite).

As shown in FIG. 1 and FIG. 6, 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, and a second air surrounding. The pipe 6675, the second gas enclosure pipe 6685, and the second combustion exhaust gas enclosure 6695.

As shown in FIG. 1 and FIG. 6, the first air enclosure 6674 connects the first air branch 6671 and the first air inlet branch 627, and the first air branch 6671, the first air envelope 6674, and the first air enter the branch pipe. 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 combustion exhaust gas pipe 6691 with the first combustion exhaust gas discharge branch pipe 628, and the first combustion exhaust gas pipe 6691, the first combustion exhaust gas pipe 6694, and the first combustion exhaust gas. The discharge branch pipe 628 and the first heat storage chamber 626 form the same passage as the combustion chamber 621.

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 pipe 6683 and the second gas inlet branch 602, and the second gas pipe 6683, the second gas pipe 6685, the second gas enters the branch pipe 602, and the second combustion. Room 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 discharges the second combustion exhaust gas pipe 6693, the second combustion exhaust gas pipe 6695, and the second combustion exhaust gas. The branch pipe 608, the second heat storage chamber 606 and the second combustion chamber 601 form the same passage.

In addition, as shown in FIG. 13, 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 electrical controller 906 In connection with the upper industrial control center 90, of course, 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 is set here. The reversing device controller 906 does not constitute a limitation to the scope of protection of this example.

As shown in FIG. 1, FIG. 2 to FIG. 5, FIG. 6, and FIG. 13, the heating method of the external gas heating device 64 is:

(1) The industrial control center 90 starts the rotary reversing motor 663 to drive the upper plate 661 to rotate on the lower plate 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 gas branch 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 through 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 accumulating chamber 626, and heats the air by using the heat released by the first heat accumulator 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 and the first combustion exhaust gas branch pipe 6691 are in a phase cut state, 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 601 through the combustion chamber through hole 6251 in the upper portion of the outer fire passage partition 625, and then passes through the second heat storage chamber 606. The second heat storage body 603 in the heat storage chamber 606 is subjected to heat absorption and temperature reduction, and is discharged from the second combustion exhaust gas discharge branch pipe 608, the second combustion exhaust gas pipe 6695, the second combustion exhaust gas pipe 6693, and the combustion exhaust gas main pipe 669 through the exhaust gas fan 666. ;

(3) When the set burning time is reached, the industrial control center 90 starts the rotary reversing motor 663 to drive the upper plate 661 to rotate in the opposite 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 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 connection 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 heat storage body 603 in the second heat storage chamber 606 heats the air and enters the second combustion chamber 601. At the same time, the gas fan 665 recovers the waste gas and obtains the net gas into the gas. The 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, at the same time, because the combustion exhaust pipe 669 and The first combustion exhaust gas branch 6691 is turned on, and the corresponding combustion exhaust gas main pipe 669 and the second combustion exhaust gas main pipe 6693 are in a phase cut state, so that the exhaust gas in the second combustion chamber 601 can only pass through the upper portion of the outer fire passage partition wall 625. The combustion chamber through hole 6251 enters the first combustion chamber 621, passes through the first regenerator 626, passes through the first regenerator 603 in the first regenerator 626, and is cooled and cooled, and finally from the first The combustion exhaust gas discharge branch pipe 628, the first combustion exhaust gas pipe 6694, the first combustion exhaust gas pipe 6691, and the combustion exhaust gas pipe 669 are discharged through the exhaust gas fan 666, so the external gas heating device 64 burns the principle after the gas in the first combustion chamber 621 is burned. The generated exhaust gas enters the second combustion chamber 601 from the combustion chamber through hole 6251, and is discharged after the second heat storage body 603 in the second combustion chamber 601 and the second heat storage chamber 606 is cooled by the remaining heat absorption, and vice versa. The exhaust gas generated after the combustion of the gas in the chamber 601 enters the first combustion chamber 621 from the combustion chamber through hole 6251, and is cooled by the first heat storage body 603 in the first combustion chamber 621 and the first heat storage chamber 606 to cool down the remaining heat absorption.

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 alternating combustion of the two gas heaters associated with the two groups, that is, the gas exchange Feeding air to the combustion chamber of the first gas heater to the combustion chamber, and combusting the hot exhaust gas from the combustion chamber of the second gas heater, and the second heat storage of the hot exhaust gas through the second gas heater The heat absorption of the second regenerator in the heat exchanger is changed to a relatively low temperature exhaust gas discharge; similarly, the gas reversing device sends air to the combustion chamber of the second gas heater, and the net gas is burned while The combustion gas is sucked out from the combustion chamber of the first gas heater, and the hot exhaust gas is cooled by the first heat storage body in the first heat storage heat exchanger of the first gas heater to become a relatively low temperature. Exhaust gas discharge; the method of heating the air by using the residual heat of the exhaust gas after combustion of the gas not only makes full use of the waste heat of the exhaust gas after the combustion of the gas, improves the combustion efficiency of the gas in the combustion chamber, but also burns the gas. Exhaust a degree of cool, do not consume external energy, play the purpose of energy saving, saving the cost of coal waste pyrolysis and gasification.

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 FIG. 1 and FIG. 10, the internal gas heating device 67 mainly consists of several groups (the 6 groups of this example) having the same structure of the gas heaters 68, 69, because the pyrolysis gasification chamber 61 has a high height and the internal gas heating device 67 is mainly It is mainly divided into upper and lower two-stage heating, and each section has 6 sets of associated third gas heater 68 and fourth gas heater 69 having the same structure, and its composition and combustion principle are related to the first combustion heater described above. 62. The second combustion heater 60 is almost identical. The third gas heater 68 also includes a third combustion chamber 681, a third gas inlet branch 682, a third regenerator 686, a third regenerator 683, and a third air. The branch pipe 687 and the third combustion exhaust gas exhaust pipe branch 688 are entered.

As shown in FIG. 1, FIG. 9, and FIG. 10, the third combustion chamber 681 is made of a refractory heat conductive material, and the pyrolysis gasification indoor ring wall 612 and the inner fire channel partition wall 635 form a relatively closed gas combustion fire passage.

As shown in FIG. 1 and FIG. 10, the lower third gas inlet branch pipe 682 passes from the lower side of the strip 651 of the center support bow 65 to the third combustion chamber 681, and the third heat storage chamber 686 is disposed at the strip 651. On the lower furnace body 91, the third regenerator 683 is placed in the third regenerator 686, and one end of the third regenerator 686 extends upward from the underside of the strip 651 of the central support bow 65 through the extension passage 6861. To the bottom of the third combustion chamber 681, the third end of the third regenerator 686 is connected to a third air inlet branch 687 and a third combustion exhaust gas outlet branch 688, respectively.

As shown in FIG. 1, FIG. 9, FIG. 10, the third gas inlet branch pipe 682 of the upper stage passes from the lower side of the bow 651 of the center support bow 65 to the third combustion chamber 681 through the fire passage partition wall 635, and the third The heat accumulating chamber 686 is disposed on the furnace body 91 below the strip 651, the third regenerator 683 is placed in the third regenerator 686, and one end of the third regenerator chamber 686 passes through the extending passage 6861 from the center supporting the strip of the bow 65. The lower side of the bow 651 extends through the fire passage partition 635 to the bottom of the third combustion chamber 681, and the other end of the third heat storage chamber 686 is connected to the third air inlet branch 687 and the third combustion exhaust gas exhaust branch 688, respectively.

Similarly, as shown in FIG. 9 and FIG. 10, the structure of the fourth gas heater 69 is the same as that of the third gas heater 68, and details are not described herein again, wherein the fourth combustion chamber 691 and the third combustion chamber 681 pass through the combustion chamber passage. The 6305 is turned on to form a group (shown in Figures 1 and 8).

Wherein, as shown in FIG. 6, 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 through the first gas surrounding pipe 6684. The first air enclosure pipe 6674, the first combustion exhaust gas enclosure 6694 is in communication with the first gas manifold 6681, the first air manifold 6671, and the first combustion exhaust manifold 6691.

As shown in FIG. 1, FIG. 6, FIG. 10, the fourth gas inlet branch 692, the fourth air inlet branch 697, and the fourth combustion exhaust gas discharge branch 698 of the fourth combustion chamber 691 of the fourth combustion heater 69 pass through the second, respectively. The gas enclosure 6685, the second air enclosure 6675, and the second combustion exhaust enclosure 6695 are in communication with the second gas manifold 6683, the second air conduit 6673, and the second combustion exhaust conduit 6693.

In summary, the combustion principles of the third combustion heater 68 and the fourth gas heater 69 are almost identical to those of the first combustion heater 62 and the second combustion heater 60 described above, and are not described herein again.

As shown in Figs. 1 and 10, the center support bow 65 is provided in the furnace cavity because the pyrolysis gasification indoor ring wall 612 and the fire channel partition 635 of the internal combustion heating device 67 are required to be provided by the center support bow 65. The support, while at the same time, provides the inner combustion heating device 67 with the laying of various pipes.

As shown in FIG. 1 and FIG. 10, the center support bow 65 is disposed in the furnace cavity below the pyrolysis gasification chamber 61 and the internal combustion heating device 67, and mainly includes a plurality of strips 651 and a center bow wall 652 of the fire bow. One end of the bow 651 is fixed on the fire ring center ring wall 652, and the other end is fixed on the furnace body 91. The strip bow 651 is arranged around the center of the fire bow center ring wall 652 at a certain angular interval, and the fire bow 651 in this example. For a total of 12 bows, the number of third combustion heaters 69 associated with the internal combustion heating device 67 is the same as the total number of fourth combustion heaters 69.

As shown in FIG. 1 and FIG. 10, 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 fourth gas entering the branch pipe 692 and the extension passage 6961 of the fourth heat storage chamber 696 facilitates the laying of the pipes of the internal combustion heating device 67, so that the various pipes of the internal combustion heating device 67 are arranged in an orderly manner without interference.

Section 2 Water Gas Reaction

Since the temperature of the coal gangue in the pyrolysis gasification chamber is high, the coal gangue is introduced into the water vapor, and the charcoal in the product after the coal gangue pyrolysis meets the superheated steam to react with water gas to form water gas (carbon monoxide and hydrogen).

As shown in FIGS. 1, 10, and 11, the water gas reaction device 7 includes a pyrolysis gasification chamber 61, a material temperature lowering device 70, and a steam generating device 75.

As shown in FIG. 1, the pyrolysis gasification chamber 61 is located above the center support bow 65, and the material cooling device 70 and the steam generating device 75 are located below the center support bow 65.

As shown in FIG. 1 and FIG. 11, the material cooling device 70 is disposed at a lower portion of the furnace body 91, including a high temperature drop greenhouse 701, a low temperature drop greenhouse 702, a greenhouse lowering bow 703, a top portion of the high temperature drop greenhouse 701, and a pyrolysis gasification chamber. The bottom of the 61 is connected; the high temperature drop greenhouse 701 and the low temperature drop greenhouse 702 are arranged above and below, and the descending greenhouse bridge bow 703 is disposed between the high temperature drop greenhouse 701 and the low temperature drop greenhouse 702, and the descending greenhouse bridge bow 703 includes a bridge bow 7031 and a steam collecting chamber 704. The steam enters the through pipe 707; the four bridge bows 7031 are radially arranged at an angular interval between the high temperature drop greenhouse 701 and the low temperature drop greenhouse 702 axis center, and the steam collecting chamber 704 is formed in the middle of the bridge bow 7031, and the steam collecting chamber 704 is a column shape. The chamber is provided with a hemispherical hood 708 at the top of the plenum chamber 704. The lower opening of the plenum chamber 704 faces the low temperature drop greenhouse 702; the steam inlet 707 is disposed in the bridge bow 7031, and the steam enters the end of the through tube 707 to the set. The steam chamber 704 has the other end extending beyond the furnace body 91.

As shown in FIG. 1 and FIG. 12, the steam generating device 75 includes an annular hollow metal casing 755, a steam pack 754 and a steam drum inlet pipe 751, and a steam drum outlet pipe 752. The annular hollow metal casing 755 is installed at the bottom of the furnace body 91. The inner ring cavity 758 of the annular hollow metal box 755 is connected to the lower part of the low temperature drop greenhouse 702 of the material cooling device 70. The annular cavity of the inner ring cavity 758 is in the shape of a large upper and a small funnel, and the annular hollow metal box 755 is formed in the box. The furnace body water bag 753 is relatively sealed for storing water, and the furnace body water bag 753 is connected with an inlet pipe 756 and a steam drum inlet pipe 751. The inlet water pipe 756 is connected to the water storage tank 757, and the steam drum inlet pipe 751 is connected to the steam bag 754. The steam drum outlet pipe 752 of the steam package 754 communicates with the steam inlet pipe 707 at the other end of the material cooling device 70.

The principle of the water gas reaction principle of the present invention is:

(1) The water vapor in the steam package 754 passes through the steam drum inlet pipe 752 and the steam inlet pipe 707 to the low temperature drop greenhouse 702 of the material cooling device 70, and the water vapor is blown to the low temperature drop greenhouse 702, except for the low temperature drop greenhouse. In addition to the cooling of the solid product after pyrolysis and gasification in 702, the water vapor is cascaded into the high temperature drop greenhouse 701, and a large amount of pyrolyzed high temperature solid product is dropped from the pyrolysis gasification chamber 61 into the high temperature drop greenhouse 701. Cooling, the steam is cooled by the pyrolysis gasification solids, and the steam temperature is increased to form superheated steam;

(2) The superheated steam enters the pyrolysis gasification chamber 61 through the central support bow 65, and is in contact with the high temperature coal gangue pyrolysis material of the pyrolysis gasification chamber 61, and the charcoal in the solid product after pyrolysis of the coal gangue The superheated steam meets to react with water gas to form water gas (carbon monoxide and hydrogen);

(3) The solid product after pyrolysis gasification of coal gangue falls from the pyrolysis gasification chamber 61 into the high temperature drop greenhouse 701 and the low temperature drop greenhouse 702 of the material cooling device 70, and passes through the low temperature drop greenhouse 702 and the high temperature drop greenhouse. 701 The water vapor entering the pyrolysis gasification chamber 61 is heated again to become the superheated high-temperature steam, and at the same time, the solid product after the pyrolysis and gasification of the coal gangue is cooled, and then the waste heat of the solid product in the greenhouse 702 is used to cool the furnace body. The water in the water bag 753 is heated to form water vapor, and the water vapor enters the steam packet 754 through the steam drum inlet pipe 751, and the steam bag 754 is replenished with a large amount of water vapor consumed by the water gas reaction, so that the water gas reaction can be continuously performed without interruption.

The large amount of water gas reaction of the present invention is generated in the lower part of the pyrolysis gasification chamber 61 because the coal gangue in the pyrolysis gasification chamber in this section has been relatively pyrolyzed and the temperature is relatively high, at this time from the heat. The bottom of the degassing chamber 61 is connected to high temperature and superheated water vapor, and the superheated steam and the carbon in the solid product after pyrolysis of the coal gangue generate a large amount of water gas; of course, the water vapor is in the high temperature drop greenhouse 701 In the cooling process of the solid product after pyrolysis and gasification of the coal gangue in the low temperature drop greenhouse 702, the residual carbon in the solid product after pyrolysis and gasification of the coal gangue also generates water gas, but the amount generated is relatively small, which is The amount of residual carbon in the solid product after coal pyrite gasification is not much, and the water vapor temperature is not too high.

The invention utilizes the heat transfer of the solid product of the relatively low temperature after the pyrolysis gasification of the coal gangue to generate water vapor, and then uses the steam to directly contact the solid product with higher temperature to generate superheated steam to reach the water gas reaction. The required temperature promotes a more complete water-gas reaction, which reduces the temperature of the solid product and produces water vapor and superheated steam. This technical method that does not require additional energy is in line with the energy conservation and consumption reduction we advocate today. The concept of development.

Section 3 Waste gas exporting device

Coal gangue produces a gas containing many useful components in the high-temperature pyrolysis gasification process. After the coal gangue pyrolysis, the carbon in the product reacts with the superheated steam to produce water gas (carbon monoxide and hydrogen), which is collectively referred to as waste gas. The waste gas is exported for use.

As shown in Fig. 1, Fig. 8, and Fig. 9, the waste gas derivation device 8 includes a waste gas concentration chamber 81, an inner outlet passage 82, an outer outlet passage 83, an outlet main passage 84, an outlet loop 85, and a waste gas concentration chamber 81. The top of the pyrolysis gasification chamber 61 is integrally formed with the pyrolysis gasification chamber 61; as shown in FIG. 1 and FIG. 8, six inner outlet passages 82 are provided in the fire passage partition wall 635, and the inner outlet passage inlet 821 is passed through. The middle of the inner ring wall 612 leads to the pyrolysis gasification chamber 61, and the inner outlet passage outlet 822 passes through the inner ring wall 612 to the waste gas concentration chamber 81 at the top of the pyrolysis gasification chamber; as shown in Fig. 1 and Fig. 8, 6 The outer strip outlet passage 83 is disposed in the outer wall of the furnace body 91. The lower outer outlet passage inlet 831 and the upper outer outlet passage inlet 834 pass through the middle of the outer annular wall 611 to the pyrolysis gasification chamber 61, and the outer outlet passage outlet 832 passes through. The outer ring wall 611 leads to a waste gas concentration chamber 81 at the top of the pyrolysis gasification chamber.

As shown in FIG. 1 and FIG. 7, the lead-out main passage 84 is disposed in the outer wall of the furnace body 91 of the coal pyrolysis furnace, and the outlet main passage inlet 841 communicates with the waste gas concentration chamber 81 and extends upward to the outside of the furnace body 91. In the wall portion outlet loop 85, the outlet loop 85 is provided with a waste gas outlet 851 and a waste gas outlet 852.

As shown in Fig. 1, Fig. 7, Fig. 8, and Fig. 9, in this example, since the pyrolysis gasification 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 It is disposed in the 6-channel fire barrier partition 635, passes through the inner ring wall 612 to the pyrolysis gasification 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 the outer fire passage partition wall 625. And the outer ring wall 611 leads to the pyrolysis gasification chamber 61, wherein since the circumference of the pyrolysis gasification chamber 61 is long, the inner ring wall 612 and the outer ring wall 611 of the pyrolysis gasification chamber 61 are respectively provided with 6 inner lead passage inlets 821 and lower outer outlet passage inlets 831, upper outer outlet passage inlets 834, and because the height of the pyrolysis gasification chamber 61 is high, the inner outlet passage inlet 821 and the lower outer outlet passage inlet 831 are exported. The channel inlet 834 is staggered up and down. As shown in FIG. 1, 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 834. In this example, the structure can be used for the pyrolysis gasification chamber. The waste gas produced in different sections of 61 can be better exported, and there are also 6 sections around the waste gas concentration room 81. The large waste gas main passage 84 leads to the outlet loop 85, so that the purpose of the installation can facilitate the export of a large amount of waste gas in the waste gas concentration chamber 81.

As shown in Fig. 1, 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 table 812 is placed in the waste gas temperature monitoring hole 811.

As shown in FIG. 13, the waste gas temperature table 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 pyrolysis gasification chamber 61 is separately led out from the channel inlet 821 into the inner outlet passage 82, and the lower outer outlet passage inlet 831 and the upper outer outlet passage inlet 834 enter the outer outlet passage. In the 83, the waste gas concentration chamber 81 is further collected. Of course, a large amount of waste gas in the pyrolysis gasification chamber 61 is directly introduced into the waste gas concentration chamber 81, and is led to the outlet loop 85 through the outlet main passage 84, and finally from the waste gas. The outlet 851 is discharged.

Section 4 Continuous Pyrolysis Gasification

In summary, the example is characterized in that coal gangue pyrolysis, gasification (water gas reaction), steam generation, and waste gas derivation process are integrated into the same furnace body, so that coal gangue pyrolysis, gasification (water gas reaction), steam generation The waste gas is continuously realized.

As shown in FIG. 1, the coal gangue pyrolysis gasification furnace 9 includes a furnace body 91, a furnace silo 92, a coal gangue pyrolysis gasification device 93, a waste gas export device 8, a hinge cage sealing discharge device 96, and a product silo. 94; coal gangue pyrolysis gasification device 93 including coal gangue pyrolysis device 6, water gas reaction device 7, coal gangue pyrolysis device 6, water gas reaction device 7, waste gas export device 8 specific structure see above; into the charge The silo 92 is disposed at the top of the furnace body 91, and the furnace fabric passage 921 is disposed at the top of the furnace body 91. The upper end of the furnace fabric passage 921 communicates with the furnace silo 92, and the lower end of the furnace fabric passage 921 is pyrolyzed with the coal gangue pyrolysis device 6. The gasification chamber 61 is open at the top, and a cage seal discharger 96 is disposed at the bottom of the inner ring cavity 758 of the annular hollow metal casing 755 of the steam generating device 75 of the water gas reaction device 7, and the product silo 94 is placed at the bottom of the furnace body 91. The product silo 94 is connected to the hinged cage sealing discharger 96, and the hinged cage sealing discharger 96 belongs to the prior art, such as a sealed discharger, a seal returner, a sealing feeder and the like on the market.

The method of continuous pyrolysis gasification in this example is:

(1), by controlling the gangue belt conveyor 95 into the furnace, the coal gangue pellets after the humidity control and dewatering are sent into the furnace silo 92, and then enter the furnace slab passage 921 to enter the heat of the coal gangue pyrolysis device 6. Decommissioning chamber 61;

(2) Providing a heat source to the pyrolysis gasification chamber 61 by the external gas heating device 64 of the coal gangue pyrolysis device 6, and the combustion of the gas in the internal gas heating device 67, the high temperature environment of the coal gangue in the pyrolysis gasification chamber 61 Pyrolysis;

(3) passing high-temperature steam from the lower portion of the pyrolysis gasification chamber 61 through the water gas reaction device 7, and contacting with the high-temperature hot coal gangue pyrolysis material of the pyrolysis gasification chamber 61, the solid product after coal pyrite pyrolysis The carbon in the medium meets the superheated steam to react with water gas to form water gas;

(4) The solid product after pyrolysis gasification of coal gangue falls from the pyrolysis gasification chamber 61 into the high temperature drop greenhouse 701 and the low temperature drop greenhouse 702 of the material cooling device 70, and passes through the low temperature drop greenhouse 702 and the high temperature drop greenhouse. The water vapor entering the pyrolysis gasification chamber 61 is heated again to become the superheated high-temperature steam, and at the same time, the solid product after the pyrolysis and gasification of the coal gangue is cooled, and then the waste heat of the solid product in the greenhouse 702 is used to generate steam. The water in the furnace water bag 753 of the annular hollow metal casing 755 of the apparatus 75 is heated to form water vapor, and the water vapor enters the steam pack 754 through the steam drum inlet pipe 751, and the steam pack 754 is replenished with a large amount consumed by the water gas reaction. steam;

(5), the steam package 754 through the steam drum inlet pipe 752 and steam into the pipe 707 and then into the low temperature drop greenhouse 702 of the material cooling device 70 into the water vapor, so that the water gas reaction can continue uninterrupted;

(6) The gas generated by the coal gangue in the high-temperature pyrolysis process and the water gas reaction to form the water gas (carbon monoxide and hydrogen) are collectively referred to as waste gas, and the waste gas is exported through the waste gas exporting device 8 provided on the furnace body for the purpose of chemical gasification. Production recovery and utilization, while the higher temperature waste gas enters the top of the pyrolysis gasification chamber 61 from the top of the pyrolysis gasification unit, and the process of deriving the main passage 84 is again on the top of the pyrolysis gasification chamber 61 entering from the furnace distribution passage 921. The coal gangue pellets charged into the furnace are preheated;

(7) According to the degree of pyrolysis gasification of coal gangue, timely control the hinged seal discharger 96 to open or close, and the solid product row after the high temperature pyrolysis and gasification of the coal gangue in the low temperature drop greenhouse 702 and the inner ring cavity 758 Into the product silo.

In this example, the coal gangue pyrolysis gasification process is integrated into the same coal thermal furnace body to realize continuous coal gangue pyrolysis gasification, high production efficiency, small plant surface required for equipment, low labor cost, and gasification after pyrolysis The residual heat in the solid product produces water vapor, and the high-temperature pyrolysis gasification of the solid product is cooled by steam to produce the high-humidity superheated steam required for the water gas reaction, which has the characteristics of low consumption and environmental protection.

Part IV Comprehensive recycling of coal pyrolysis gases

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

Section 1 Waste gas condensing device

The gangue pyrolysis gasification discharges the waste gas at a relatively high temperature. In order to facilitate the transportation of the high-temperature waste gas before the chemical production and recovery, the high-temperature waste gas is sprayed with ammonia water for cooling.

Section 2 Recovery and purification of waste gas

The waste gas after the spraying of ammonia water is gas-liquid separation. The mixed liquid after gas-liquid separation contains various useful organic components such as phenol oil, naphthalene oil, washing oil, eucalyptus oil, etc. for industrial refining of other subsidiary products, gas-liquid separation. After the gas is cooled by air cooling, it is purified and recovered by dry method to become net gas, and the net gas can be stored for combustion.

Chapter II Combustion and Utilization of Waste Gas Recovery and Purification

Section 1 Net gas combustion after waste gas recovery and purification

The adsorbed net gas is used for combustion to provide a heat source for pyrolysis and gasification of coal gangue.

Section 2 Regenerative heating of saturated activated carbon by exhaust gas after combustion with net gas

The hot exhaust gas after the combustion of the net gas is used for the saturated activated coke which is purified by adsorption and purification of the waste gas, and is regenerated into unsaturated unsaturated coke by evaporation heating.

The third section uses the clean gas after the combustion of the net gas to adjust the moisture of the coal gangue particles into the furnace.

The hot exhaust gas after the combustion of the net gas is used for humidity conditioning and dewatering of the coal gangue pellets before entering the furnace.

Chapter III Thermal Cycle Continuous Coal Gangue Pyrolysis Gasification Synthesis

Section 1 Thermal cycle continuous coal gangue pyrolysis gasification and humidity control and tail gas purification

The hot exhaust gas after the net gas combustion is used for humidity conditioning and dehydration of the coal gangue pellets before entering the furnace, and the hot exhaust gas is dehydrated, then the water is purified and cooled, and finally the clean low temperature discharge is achieved.

Section 2 Thermal cycle continuous coal gangue pyrolysis gasification comprehensive process

Based on the above contents, a comprehensive process of thermal cycle continuous coal gangue pyrolysis gasification is obtained, including coal gangue hot exhaust gas conditioning and dehydration, coal gangue pyrolysis gasification, waste gas condensation, waste gas recovery and purification, and tail gas water. Mu purification and so on.

Section III Control of Comprehensive Process of Thermal Cycle Continuous Coal Gangue Pyrolysis Gasification

The invention controls various electrical equipment used in the processes of coal gangue pyrolysis gasification, waste gas recovery and purification, net gas combustion, waste heat utilization after combustion, and the like, so that thermal cycle continuous coal gangue pyrolysis gasification can be obtained. Going smoothly.

The above description is only an example of a thermal cycle continuous coal gangue pyrolysis gasification integrated device and process, and does not constitute a limitation on the thermal cycle continuous coal gangue pyrolysis gasification integrated device and process protection range.

Claims

1. The coal gangue pyrolysis device is arranged in the middle of the furnace body, and is characterized in that it mainly comprises a pyrolysis gasification chamber, an external gas heating device, an internal gas heating device, a gas reversing device, a central support bow, and the heat The degasification chamber is composed of an inner annular space of the inner and outer ring walls of the refractory heat conductive material, and is surrounded by an outer gas heating device on the outer periphery of the pyrolysis gasification outdoor wall ring, and the inner gas ring heating device in the pyrolysis gasification indoor ring wall ring; The external gas heating device is mainly composed of a plurality of groups of structures associated with a first gas heater and a second gas heater, and the first gas heater mainly comprises a first combustion chamber, a first gas inlet branch pipe and a first In the heat storage heat exchanger, the first gas entering branch pipe passes through the outer wall of the furnace and is passed to the first combustion chamber, and the first combustion chamber is made of a furnace outer wall made of refractory material and a refractory heat conductive material to form a pyrolysis gasification outdoor ring. The wall and the outer fire passage partition wall enclose a relatively closed gas combustion fire passage, the first heat storage heat exchanger comprising a first heat storage chamber, a first heat storage body, a first air inlet branch pipe and a first combustion Exhaust gas exhaust pipe The first regenerator is disposed in the outer wall of the furnace, and the first regenerator is disposed in the first regenerator, one end of the first regenerator is open 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 gas discharge branch pipe, the same structure is the same. The second gas heater also mainly includes a second combustion chamber, a second gas inlet branch pipe and a second heat storage heat exchanger, the first combustion chamber and the immediately adjacent a combustion chamber through hole is arranged at the top of the outer fire passage partition wall between the two combustion chambers, and the combustion chamber through hole connects the first combustion chamber and the immediately adjacent second combustion chamber to form a group; the inner gas heating device is mainly The structure of the associated third gas heater and the fourth gas heater having the same structure is almost the same as that of the first combustion heater and the second combustion heater, and the third is the third gas heater. The combustion chamber is made of refractory and heat conductive material, and the pyrolysis gasification indoor ring wall and the inner fire passage partition wall enclose a relatively closed gas combustion fire passage, and the third gas entering branch pipe passes through the upward passage of the center support bow. Third burning a third regenerator is disposed on the furnace body below the bow, and a third regenerator is disposed in the third regenerator, and one end of the third regenerator passes through the extension passage through the underside of the bow of the central support bow Extending upwardly to the bottom of the third combustion chamber, the other end of the third regenerator is respectively connected with a third air inlet branch and a third combustion exhaust gas outlet branch, and the third combustion chamber and the immediately adjacent fourth combustion chamber a combustion chamber passage is arranged at a top of the fire passage partition wall, and the combustion chamber passage connects the third combustion chamber and the immediately adjacent fourth combustion chamber to form a group; the gas reversing device comprises an upper disc, a lower disc, and a rotary switch To the motor, the air fan, the gas fan, the exhaust fan, and the lower plate respectively, an air main pipe and a first air pipe, a second air pipe, a gas main pipe, a first gas pipe, a second gas pipe, a combustion exhaust pipe and a combustion exhaust pipe are respectively connected. a second combustion exhaust gas branch, a first combustion exhaust gas branch, wherein the second combustion exhaust gas pipe and the first combustion exhaust gas pipe and the first air pipe and the second air pipe and the first gas pipe and the second gas pipe are provided Just rightly adjusted, the upper plate is attached to the upper part of the lower plate, and the upper plate is respectively provided with an air connection pipe, a gas connection pipe, a combustion exhaust pipe connection pipe, and the rotary reversing motor drives the upper plate to reciprocate on the lower plate to realize the air main force continuously and the first The air pipe and the second air pipe are switched on and off, and the gas main pipe is continuously switched on and off with the first gas pipe and the second gas pipe, and the combustion exhaust pipe is continuously connected with the second combustion exhaust pipe and the first combustion exhaust pipe. Perform switching on and off; Wherein, the first air branch pipe is connected to the first air inlet branch pipe and the third air inlet branch pipe, and at the same time, the first gas pipe is connected to the first gas inlet branch pipe and the third gas inlet branch pipe, at the same time, The first combustion exhaust gas pipe is connected with the first combustion exhaust gas discharge branch pipe and the third combustion waste gas discharge branch pipe; similarly, the second air pipe and the second air inlet pipe and the fourth air inlet branch pipe are connected, and at the same time, the second gas The branch pipe and the second gas enter the branch pipe, and the fourth gas enters the branch pipe, and at the same time, the second combustion gas pipe is coupled with the second combustion exhaust gas discharge branch pipe and the fourth combustion exhaust gas discharge branch pipe.

2. The coal gangue pyrolysis apparatus according to claim 1, wherein the coal gangue pyrolysis device further comprises two sets of surrounding pipes disposed on an outer circumference of the furnace body, including a first air surrounding pipe, the first gas a first combustion exhaust pipe, a second air pipe, a second gas pipe, and a second combustion exhaust pipe; wherein the first air pipe passes through the first air pipe and the first air into the branch pipe, The third air enters the branch pipe connection, and at the same time, the first gas pipe passes through the first gas pipe and the first gas enters the branch pipe, and the third gas enters the branch pipe. At the same time, the first combustion exhaust pipe passes through the first a combustion exhaust gas pipe is connected with the first combustion exhaust gas discharge branch pipe and the third combustion exhaust gas discharge branch pipe; similarly, the second air pipe is connected to the second air inlet pipe through the second air pipe and the second air inlet branch pipe, and at the same time, The second gas pipe passes through the second gas pipe and the second gas into the branch pipe, and the fourth gas enters the branch pipe, and at the same time, the second combustion gas pipe passes through the second combustion exhaust pipe and the second combustion Gas discharge manifold, the combustion exhaust gas discharged fourth branch coupling.

3. The coal gangue pyrolysis apparatus according to claim 1, wherein a first one-way air valve is disposed between the first air inlet branch of the first gas heater and the first heat storage chamber, The first one-way air valve allows air to flow from the first air inlet pipe and the first heat storage chamber into the first combustion chamber; a first one-way exhaust valve is disposed between the first combustion exhaust gas discharge branch pipe and the first heat storage chamber, The first one-way exhaust valve allows the gas combustion exhaust gas to flow from the first combustion chamber through the first regenerative chamber, and finally from the first combustion exhaust gas exhaust branch; the second air of the second gas heater enters the branch and the second a second one-way air valve is disposed between the heat storage chambers, and the second one-way air valve allows air to flow from the second air inlet tube and the second heat storage chamber to the second combustion chamber; A second one-way exhaust valve is disposed between the second combustion exhaust gas discharge branch pipe and the second heat storage chamber, and the second one-way exhaust gas valve allows the gas combustion exhaust gas to flow from the second combustion chamber to the second heat storage chamber, and finally from the second The second combustion gas exhaust pipe is discharged; the third gas heater and the fourth gas heater also include a one-way air valve and a one-way exhaust valve, which are disposed in the same manner as the first gas heater and the second gas heater.

4. The coal gangue pyrolysis apparatus according to claim 1, wherein said external gas heating device is mainly divided into upper, middle and lower three-stage heating, and each group has nine sets of identical first gas heaters. And a second gas heater.

5. The coal gangue pyrolysis apparatus according to claim 1, wherein said internal gas heating device is mainly divided into upper and lower two-stage heating, and each group has six sets of identical third gas heaters, Four gas heaters.