CN103194267B

CN103194267B - Water-gas reaction method employing pyrolysis gasification of coal gangue

Info

Publication number: CN103194267B
Application number: CN201310132840.9A
Authority: CN
Inventors: 王新民
Original assignee: Shanxi Xinli Energy Technology Co Ltd
Current assignee: Shanxi Xinli Energy Technology Co Ltd
Priority date: 2013-04-10
Filing date: 2013-04-10
Publication date: 2014-07-09
Anticipated expiration: 2033-04-10
Also published as: CN103194267A

Abstract

The invention discloses water-gas reaction method employing pyrolysis gasification of coal gangue. The method comprises the following specific steps of: (1) introducing water vapor in a steam pocket into a high-temperature cooling chamber and a low-temperature cooling chamber of a material cooling device, enabling the water vapor to directly contact with solid after pyrolysis gasification to form overheat water vapor when the solid after pyrolysis gasification is cooled; (2) feeding the overheat water vapor to a pyrolysis gasification chamber to contact with a high-temperature coal gangue pyrolysis material; carrying out water gas reaction to generate water gas after carbon in a solid product after pyrolysis of the coal gangue encounters the overheat water vapor; and (3) enabling the solid product after pyrolysis gasification of the coal gangue to fall into the high-temperature cooling chamber and the low-temperature cooling chamber to heat the entering water vapor to form overheat water vapor; heating the water by the afterheat of the solid product to form the water vapor; and introducing the water vapor into the steam pocket of a steam generator to supply a lot of water vapor consumed because of water gas reaction, so that the water gas reaction can be continuously carried out.

Description

The water-gas reaction method of coal gangue pyrolytic gasification

Technical field

The present invention relates to the technology of coal gangue pyrolytic gasification, particularly the water-gas reaction method of coal gangue pyrolytic gasification.

Background technology

Coal gangue---the stone of selecting from raw coal, is the waste residue of coal separating plant, bad processing, China has the coal gangue of more than one hundred million tons not utilize every year, and still continues every year to discharge about 100Mt, not only piles up and takes up an area, and can also spontaneous combustion polluted air or cause fire, cause serious environmental pollution.

Due to the incoalation of 1 years, in coal gangue, contain carbon, oil, the gas material of 20-30%, wherein oil gas accounts for 11-15%, carbon accounts for 7-15%.Coal gangue pyrolytic gasification, (composition is the compositions such as silicon-dioxide, aluminium sesquioxide, ferric oxide, titanium dioxide, calcium oxide, magnesium oxide, potassium oxide, sodium oxide, Vanadium Pentoxide in FLAKES, manganese oxide, sulphur trioxide to obtain the solid product of oil gas product and 70-80%, the grog of sal refractory materials), there is economic worth, more have social benefit.

The inventor is the research of the physical property to coal gangue and high-temperature coal pyrolytic gasification technique for a long time, innovates a set of brand-new coal gangue high temperature pyrolysis and gasification composite technology and device.

Summary of the invention

The invention provides the water-gas reaction method of coal gangue pyrolytic gasification, the method utilizes the waste heat of the solid product after coal gangue pyrolytic gasification to produce water vapor, recycling water vapor directly contacts generation superheated vapour with solid product, promote that water-gas reaction is more abundant, save energy consumption simultaneously, reduce solid product temperature, the discharge of convenient solid product.

Realizing the technical scheme that above-mentioned purpose takes is:

The water-gas reaction method of coal gangue pyrolytic gasification, the equipment that present method relates to comprises pyrolysis vaporizer, material heat sink, steam generation device, concrete steps are:

(1), water vapor in the steam pockets of steam generation device is led to the low temperature cooling chamber of material heat sink, water vapor blows to low temperature cooling chamber, except the solid product cooling to after pyrolytic gasification in low temperature cooling chamber, water vapor upwards seals in the high temperature cooling chamber of material heat sink, give the cooling of the high-temp solid product after pyrolysis vaporizer falls into a large amount of pyrolytic gasification of high temperature cooling chamber, water vapor, in lowering the temperature to the solid after pyrolytic gasification, improves vapor temperature and forms superheated vapour;

(2), superheated vapour enters pyrolysis vaporizer, and contacts with the high-temperature coal spoil pyrolysis material of pyrolysis vaporizer, the charcoal after coal gangue pyrolysis in solid product and superheated vapour meet and carry out water-gas reaction and generate water-gas;

(3), solid product after coal gangue pyrolytic gasification falls into high temperature cooling chamber and the low temperature cooling chamber of material heat sink from pyrolysis vaporizer, the water vapor that upwards enters pyrolysis vaporizer to passing through low temperature cooling chamber and high temperature cooling chamber is heated as overheated high-temperature water vapor again, again the solid product after coal gangue pyrolytic gasification is lowered the temperature simultaneously, in recycling low temperature cooling chamber, solid product waste heat adds thermosetting water vapor to the water in the body of heater water bag of steam generation device, water vapor passes into and in the steam pockets of steam generation device, supplements a large amount of water vapors that consume because of water-gas reaction, water-gas reaction can uninterruptedly be carried out continuously.

The waste heat of the relatively low solid product of the temperature of utilization of the present invention after coal gangue pyrolytic gasification carries out heat transmission and produces water vapor, the recycling water vapor solid product higher with temperature directly contacts generation superheated vapour, reach the temperature required of water-gas reaction, promote that water-gas reaction is more abundant, save energy consumption simultaneously, reduce solid product temperature, the discharge of easy solid product, prevents that relevant device from damaging.

Brief description of the drawings

Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.

Fig. 1 is coal gangue pyrolytic gasification stove schematic diagram of the present invention;

Fig. 2 is gas reverser schematic diagram of the present invention;

Fig. 3 coils schematic diagram on gas reverser of the present invention;

Fig. 4 is gas reverser lower wall schematic diagram of the present invention;

Fig. 5 is c-c place cross-sectional schematic in Fig. 3;

Fig. 6 is gas reverser of the present invention and combustion heater pipe network connection diagram;

Fig. 7 is t-t place schematic cross-section in Fig. 1;

Fig. 8 is u-u place schematic cross-section in Fig. 1;

Fig. 9 is v-v place schematic cross-section in Fig. 1;

Figure 10 is center support bow schematic diagram of the present invention (x-x place schematic cross-section in Fig. 1);

Figure 11 is vapour passage intention of the present invention (y-y place schematic cross-section in Fig. 1);

Figure 12 is steam pockets pipeline schematic diagram of the present invention (z-z place schematic cross-section in Fig. 1);

Figure 13 is industry control central electrical connection diagram of the present invention.

Embodiment

The specific embodiment of the comprehensive utilization of coal gangue pyrolytic gasification of the present invention is mainly being introduced below in detail.

First part's coal gangue granularity control

Coal gangue processing is broken into 0～20mm granularity, in this size range, coal gangue particle is dehydrated, fully dry, dewatering efficiency is high, but this does not form the restriction to needed coal gangue to the present invention.

Second section coal gangue damping dehydration

The hot waste gas producing after purified gas burning after the raw gas recovery of chemical products that coal gangue high temperature pyrolysis and water-gas reaction are produced purifies carries out damping dehydration for the coal gangue pellet after fragmentation entering stokehold.

In order to keep the neat and tidy of environment, after damping dehydration, tail gas is washed one's hair and is purified rear qualified discharge by water.

Part III coal gangue high temperature pyrolysis and gasification (pyrolysis heating, water-gas are sent out and answered)

The high temperature pyrolysis heating of first segment coal gangue

As shown in Figure 1, coal gangue pyrolysis installation 6 is arranged on body of heater 91 middle parts, mainly comprises that pyrolysis vaporizer 61, outer gas-operated thermal bath facility 64, interior gas-operated thermal bath facility 67, gas reversing system 66, center support bow 65 form, as Fig. 8, shown in Fig. 9: pyrolysis vaporizer 61 is by fire-resistant thermally conductive material,

outer ring wall

612, 611 form an annulus, being centered around pyrolysis vaporizer's outer ring wall 611 peripheries is outer gas-operated thermal bath facility 64, in indoor ringwall 612 rings of pyrolytic gasification, it is interior gas-operated thermal bath facility 67, wherein outer gas-operated thermal bath facility 64 is mainly first combustion heater 62 of some groups of (9 groups of this examples) identical associations of structure, the second combustion heater 60 forms (sees Fig. 1, Fig. 2), as Fig. 1, Fig. 8, shown in Fig. 9: because pyrolysis vaporizer 61 is highly higher, wherein outer gas-operated thermal bath facility 64 is mainly divided into, in, lower Three-section type heating, every section has the first combustion heater 62 of 9 groups of identical associations of structure, the second combustion heater 60 forms, interior gas-operated thermal bath facility 67 is mainly divided into, lower two-section type heating, every section has 6 groups of identical the 3rd combustion heaters 68 mutually of structure, the 4th combustion heater 69 forms.

As Fig. 1, Fig. 9 show, the first described combustion heater 62 mainly comprises that the first combustion chamber 621, the first coal gas enter arm 622 and the first regenerative heat exchanger 624, the first coal gas and enters arm 622 and lead in the first combustion chamber 621 through body of heater 91 exterior walls.

As shown in Fig. 1, Fig. 9: body of heater 91 exterior walls that be made up of refractory materials the first combustion chamber 621 and fire-resistant thermally conductive material are made pyrolysis vaporizer's outer ring wall 611 and outer quirk partition wall 625 and surround the gas-fired quirk of a relative closure.

As shown in Fig. 1, Fig. 9, the first regenerative heat exchanger 624 comprises that the first accumulation of heat chamber 626, the first heat storage 623, the first air enter arm 627 and the first combustion exhaust exhaust outlet 628; The first accumulation of heat chamber 626 is arranged in body of heater 91 exterior walls, the first heat storage 623 arranges in the first accumulation of heat chamber 626,621 bottoms, the first combustion chamber are led in the first 626 one end, accumulation of heat chamber, and the other end is connected to respectively the first air and enters arm 627 and the first combustion exhaust exhaust outlet 628.

As shown in Figure 9, enter and between arm 627 and the first accumulation of heat chamber 626, be provided with the first one-way air valve 629, the first one-way air valves 629 and allow air to enter pipe 627 and the first accumulation of heat chamber 626 flows into the first combustion chamber 621 from the first air at the first air; Between the first combustion exhaust exhaust outlet 628 and the first accumulation of heat chamber 626, be provided with the first unidirectional waste gas valve 620, the first unidirectional waste gas valve 620 allows the gas-fired waste gas first accumulation of heat chamber 626 of flowing through from the first combustion chamber 621, finally discharge (certainly from the first combustion exhaust exhaust outlet 628, adopt gas reversing system 66 as described below, when air supervisor 667 is in charge of 6671 connections with the first air, air supervisor 667 and the second air are in charge of 6673 in cut-out; Meanwhile, combustion exhaust supervisor 669 is in charge of 6691 with the first combustion exhaust and also cuts off mutually, and corresponding combustion exhaust supervisor 669 and the second combustion exhaust are in charge of 6693 in being connected, can play the effect that replaces the first one-way air valve 629 and the first unidirectional waste gas valve 620).

In like manner, as shown in Figure 9: identical the second combustion heater 60 of structure mainly comprises that the second combustion chamber 601, the second coal gas enter arm 602 and the second regenerative heat exchanger 604.

As shown in Figure 9: body of heater 91 exterior walls that be made up of refractory materials the second combustion chamber 601 and fire-resistant thermally conductive material are made pyrolysis vaporizer's outer ring wall 611 and outer quirk partition wall 625 and surround the gas-fired quirk of a relative closure.

As shown in Fig. 1, Fig. 9: the second coal gas enters arm 602 and leads in the second combustion chamber 601 through body of heater 91 exterior walls.

As shown in Figure 9: the second regenerative heat exchanger 604 comprises the second accumulation of heat chamber 606, the second heat storage 603, the second air enters arm 607 and the second combustion exhaust exhaust outlet 608, the second accumulation of heat chamber 606 is arranged in body of heater 91 exterior walls, the second heat storage 603 arranges in the second accumulation of

heat chamber

606, 601 bottoms, the second combustion chamber are led in the second 606 one end, accumulation of heat chamber, the other end is connected to respectively the second air and enters arm 607 and the second combustion exhaust exhaust outlet 608, enter between arm 607 and the second accumulation of heat chamber 606 and be provided with the second one-way air valve 609 at the second air, the second one-way air valve 609 allow air from the second air enter pipe 607 and second accumulation of heat chamber 606 flow into the second combustion chamber 601, between the second combustion exhaust exhaust outlet 608 and the second accumulation of heat chamber 606, be provided with the second unidirectional waste gas valve 600, the second unidirectional waste gas valve 600 allows the gas-fired waste gas second accumulation of heat chamber 606 of flowing through from the second combustion chamber 601, finally discharge (certainly from the second combustion exhaust exhaust outlet 608, adopt gas reversing system 66 as described below, when air supervisor 667 and the first air are in charge of 6671 cut-outs, air supervisor 667 and the second air are in charge of 6673 in connecting, meanwhile, combustion exhaust supervisor 669 and the first combustion exhaust are in charge of 6691 and are also connected, and corresponding combustion exhaust supervisor 669 is in charge of 6693 also cut-outs mutually with the second combustion exhaust, can play the effect that replaces the second one-way air valve 609 and the second unidirectional waste gas valve 600).

As shown in Fig. 1, Fig. 8, between the second combustion chamber 601 of the first combustion chamber 621 and next-door neighbour, the top of outer quirk partition wall 625 is provided with combustion chamber through hole 6251, combustion chamber through hole 6251 is connected the first combustion chamber 621 to form associated one group with the second combustion chamber 601 of next-door neighbour, in this example, outer gas-operated thermal bath facility 64 is provided with quirk partition wall 625 partition walls outside 18 roads altogether, forms 9 groups of associated burning groups; In addition, as shown in Figure 1; Because pyrolysis vaporizer 61 is highly higher, wherein outer gas-operated thermal bath facility 64 is mainly divided into upper, middle and lower segment formula heating, and every section has identical and associated the first combustion heater 62 of 9 groups of structures, the second combustion heater 60 to form.

As shown in Figure 1: on body of heater 91 exterior walls, each combustion chamber is also provided with chamber temperature monitoring holes 6201 and combustion chamber spy hole 6202, combustion chamber spy hole 6202 is convenient to technician's gas-fired situation of observing each combustion chamber directly perceived, in chamber temperature monitoring holes 6201, be provided with chamber temperature table 6203 for the temperature monitoring to combustion chamber, so that the assessment to pyrolysis of coal process.

As shown in figure 13: chamber temperature table 6203 is connected with industry control center 90, automatically gathered the temperature data of chamber temperature table 6203 by industry control center 90.

As Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6, gas reversing system 66 comprises dish 661, lower wall 662, rotation reversing motor 663, air blower 664, gas fan 665, exhaust gas fan 666, lower wall 662 is connected to respectively an air supervisor 667 and the first air is in charge of 6671, the second air is in charge of 6673, coal gas supervisor 668 and the first gas manifold 6681, the second gas manifold 6683, combustion exhaust supervisor 669 and the second combustion exhaust are in charge of 6693, the first combustion exhaust is in charge of 6691, wherein, the second combustion exhaust be in charge of 6693 and first combustion exhaust be in charge of 6691 and first air be in charge of 6671 and second air be in charge of 6673 and the setting of first gas manifold 6681 and the second gas manifold 6683 just exchange (Fig. 3, Fig. 4, shown in Fig. 6).

As Fig. 3, Fig. 4, Fig. 5, shown in Fig. 6: above coil 661 and be fitted in lower wall 662 tops, upper dish 661 respectively correspondence is provided with air pipe connecting 6672, coal gas pipe connecting 6682, combustion exhaust pipe connecting 6692, thereby rotation reversing motor 663 drive upper dish 661 reciprocating rotation on lower wall 662 realize air supervisor 667 constantly with the first air be in charge of 6671 and second air be in charge of 6673 and connect and cut off conversion, coal gas supervisor 668 constantly connects and cuts off conversion with the first gas manifold 6681 and the second gas manifold 6683, combustion exhaust supervisor 669 constantly with the second combustion exhaust be in charge of 6693 and first combustion exhaust be in charge of 6691 connect and cut off conversion (with the first air be in charge of 6671 and second air be in charge of 6673 and the switching of first gas manifold 6681 and the second gas manifold 6683 just contrary).

As shown in Fig. 1, Fig. 6, be also provided with two groups of bustle pipes in the periphery of body of heater 91, comprise the first air bustle pipe 6674, the first coal gas bustle pipe 6684, the first combustion exhaust bustle pipes 6694; The second air bustle pipe 6675, the second coal gas bustle pipe 6685, the second combustion exhaust bustle pipes 6695.

As shown in Fig. 1, Fig. 6, the first air bustle pipe 6674 by the first air be in charge of 6671 and first air enter arm 627 and link up, by the first air be in charge of 6671, the first air bustle pipe 6674, the first air enter arm 627, the first accumulation of heat chamber 626 and the first combustion chamber 621 and form same path;

Meanwhile, the first coal gas bustle pipe 6684 enters arm 622 by the first gas manifold 6681 and the first coal gas and links up, by the first gas manifold 6681, the first coal gas bustle pipe 6684, the first coal gas enters arm 622 and the first combustion chamber 621 forms same path;

Simultaneously now, the first combustion exhaust bustle pipe 6694 be by the first combustion exhaust be in charge of 6691 and first combustion exhaust exhaust outlet 628 link up, by the first combustion exhaust be in charge of 6691, the first combustion exhaust bustle pipe 6694, the first combustion exhaust exhaust outlet 628, the first accumulation of heat chamber 626 form same path with combustion chamber 621.

In like manner, the second air bustle pipe 6675 by the second air be in charge of 6673 and second air enter arm 607 and link up, by the second air be in charge of 6673, the second air bustle pipe 6675, the second air enter arm 607, the second accumulation of heat chamber 606 and the second combustion chamber 601 and form same path;

Meanwhile, the second coal gas bustle pipe 6685 enters arm 602 by the second gas manifold 6683 and the second coal gas and links up, by the second gas manifold 6683, the second coal gas bustle pipe 6685, the second coal gas enters arm 602 and the second combustion chamber 601 forms same path;

Meanwhile, the second combustion exhaust bustle pipe 6695 by the second burning gas be in charge of 6693 and second combustion exhaust exhaust outlet 608 link up, by the second combustion exhaust be in charge of 6693, the second combustion exhaust bustle pipe 6695, the second combustion exhaust exhaust outlet 608, the second accumulation of heat chamber 606 and the second combustion chamber 601 form same path.

In addition; as shown in figure 13; this example also comprises that gas reversing system controller 906 is for controlling rotation reversing motor 663, air blower 664, gas fan 665, exhaust gas fan 666; gas reversing system electric controller 906 is connected with upper industry control center 90 again; certainly from electric control theory; in this example, rotate reversing motor 663, air blower 664, gas fan 665, exhaust gas fan 666 and controlled by industry control center 90, so the restriction that gas reversing system controller 906 does not form this routine protection domain is set herein.

Shown in as shown in Figure 1, Figure 2～Fig. 5, Fig. 6, Figure 13: the heating means of this outer gas-operated thermal bath facility 64 are:

(1) industry control center 90 startup rotation reversing motors 663 drive the rotation on lower wall 662 of upper dish 661, and air supervisor 667 and the first air are in charge of 6671 connections, and air supervisor 667 and the second air are in charge of 6673 in dissengaged positions; Meanwhile, coal gas supervisor 668 and the first gas manifold 6681 are also connected, and coal gas supervisor 668 and the second gas manifold 6683 are in dissengaged positions; Meanwhile, combustion exhaust supervisor 669 is in charge of 6691 with the first combustion exhaust and also cuts off mutually, and corresponding combustion exhaust supervisor 669 and the second combustion exhaust are in charge of 6693 in the state of being connected;

(2) industry control center 90 starts air blower 664, gas fan 665, exhaust gas fan 666, air blower 664 by air blast air supervisor 667, air enter successively through air pipe connecting 6672, the first air be in charge of 6671, the first air bustle pipe 6674, the first air enter arm 627 and enter into the first accumulation of heat chamber 626, enter in the first combustion chamber 621 after utilizing heat that the first heat storage 623 discharges to heat air, simultaneously, gas fan 665 obtains raw gas purified gas and blasts coal gas supervisor 668 after recovery of chemical products purifies, coal gas enters coal gas pipe connecting 6682 successively, the first gas manifold 6681, the first coal gas bustle pipe 6684, the first coal gas enters arm 622 and enters in the first combustion chamber 621 and burn, meanwhile, because combustion exhaust supervisor 669 is in charge of 6691 in phase dissengaged positions with the first combustion exhaust, and corresponding combustion exhaust supervisor 669 and the second combustion exhaust are in charge of 6693 in the state of being connected, so the waste gas in the first combustion chamber 621 after gas-fired can only enter into the second combustion chamber 601 by the combustion chamber through hole 6251 on outer quirk partition wall 625 tops, again through in the second accumulation of heat chamber 606, after the second heat storage 603 in the second accumulation of heat chamber 606 carries out absorbing and cooling temperature from the second combustion exhaust exhaust outlet 608, the second combustion exhaust bustle pipe 6695, the second combustion exhaust is in charge of 6693, combustion exhaust supervisor 669 discharges by exhaust gas fan 666,

(3) reach and set combustion time, industry control center 90 starts rotation reversing motor 663 and drives upper dish 661 to rotate backward on lower wall 662, air supervisor 667 and the first air are in charge of 6671 cut-outs, air supervisor 667 and the second air are in charge of 6673 in on-state, simultaneously, coal gas supervisor 668 also cuts off mutually with the first gas manifold 6681, coal gas supervisor 668 and the second gas manifold 6683 on-states, meanwhile, combustion exhaust supervisor 669 and the first combustion exhaust are in charge of 6691 and are also connected, and corresponding combustion exhaust supervisor 669 and the second combustion exhaust are in charge of 6693 also phase dissengaged positions,

(4) air blower 664 by air blast air supervisor 667, air enter successively through air pipe connecting 6672, the second air be in charge of 6673, the second air bustle pipe 6675, the second air enter arm 607 and enter into the second accumulation of heat chamber 606, after the heat that utilizes the second heat storage 603 in the second accumulation of heat chamber 606 to discharge heats air, enter in the second combustion chamber 601, simultaneously, gas fan 665 obtains raw gas purified gas and blasts coal gas supervisor 668 after reclaiming only, coal gas enters coal gas pipe connecting 6682 successively, the second gas manifold 6683, the second coal gas bustle pipe 6685, the second coal gas enters arm 602 and enters in the second combustion chamber 601 and burn, meanwhile, because combustion exhaust supervisor 669 and the first combustion exhaust are in charge of 6691 and are connected, and corresponding combustion exhaust supervisor 669 and the second combustion exhaust are in charge of 6693 in phase dissengaged positions, so the waste gas in the second combustion chamber 601 after gas-fired can only enter in the first combustion chamber 621 by the combustion chamber through hole 6251 on outer quirk partition wall 625 tops, again through the first accumulation of heat chamber 626, the first heat storage 603 in the first accumulation of heat chamber 626 carries out after absorbing and cooling temperature, finally from the first combustion exhaust exhaust outlet 628, the first combustion exhaust bustle pipe 6694, the first combustion exhaust is in charge of 6691, combustion exhaust supervisor 669 discharges by exhaust gas fan 666, so outer gas-operated thermal bath facility 64 combustion principle are to enter the second combustion chamber 601 when the waste gas generating after gas-fired in the first combustion chamber 621 from combustion chamber through hole 6251, after the second heat storage 603 in the second combustion chamber 601 and the second accumulation of heat chamber 606 is to its exhaust-heat absorption cooling, discharge, otherwise, when the waste gas generating after gas-fired in the second combustion chamber 601 enters the first combustion chamber 621 from combustion chamber through hole 6251, after the first heat storage 603 in the first combustion chamber 621 and the first accumulation of heat chamber 606 is to its exhaust-heat absorption cooling, discharge.

In sum, this gas two by gas reversing system enters the mode of operation of the regenerative heat exchange of a mode of operation outing and regenerative heat exchanger, realize the combustion heater alternate combustion of two groups of associations, be that gas reversing system is sent into air, purified gas burning to the combustion chamber of the first combustion heater, the hot waste gas after sucking-off burning from the combustion chamber of the second combustion heater simultaneously, the second heat storage absorbing and cooling temperature of hot waste gas in the second regenerative heat exchanger of the second combustion heater becomes the relatively low low temperature waste gas of temperature and discharges; In like manner, gas reversing system is sent into air, purified gas burning to the combustion chamber of the second combustion heater, the hot waste gas after sucking-off burning from the combustion chamber of the first combustion heater simultaneously, the first heat storage absorbing and cooling temperature of hot waste gas in the first regenerative heat exchanger of the first combustion heater becomes the relatively low low temperature waste gas of temperature and discharges; This method of mutually utilizing waste gas residual heat after gas-fired to add warm air, both played the waste gas residual heat after gas-fired had been made full use of, improve the efficiency of combustion of the coal gas in combustion chamber, can carry out cooling to a certain degree to the waste gas after gas-fired again, need not consume the external energy, play energy-saving and cost-reducing object, save coal gangue pyrolytic gasification cost.

Heating by external gas-operated thermal bath facility 64 is controlled automatically, reduces human cost, has improved the control accuracy to pyrolysis of coal process, realizes automatization.

As Fig. 1, shown in Figure 10, interior gas-operated thermal bath facility 67 is mainly by some groups of (6 groups of this examples) combustion heaters 68 that structure is identical, 69, because the highly higher interior gas-operated thermal bath facility 67 of pyrolysis vaporizer 61 is mainly by being mainly divided into, lower two-section type heating, every section has 6 groups of association the 3rd combustion heaters 68 that structure is identical, the 4th combustion heater 69, it forms structure and associated first burning heater 62 of combustion principle with above introduction, the second burning heater 60 is almost identical, the 3rd combustion heater 68 also comprises the 3rd combustion chamber 681, the 3rd coal gas enters arm 682, the 3rd accumulation of heat chamber 686, the 3rd heat storage 683, the 3rd air enters arm 687 and the 3rd combustion exhaust exhaust outlet 688.

As shown in Fig. 1, Fig. 9, Figure 10, the indoor ringwall 612 of pyrolytic gasification and internal-quirk partition wall 635 are made and are surrounded the gas-fired quirk of a relative closure in the 3rd combustion chamber 681 by fire-resistant thermally conductive material.

As shown in Figure 1, Figure 10 shows, the 3rd coal gas of hypomere enters arm 682 and upwards leads to three combustion chamber 681 from the passing of article bow 651 of center support bow 65 below, the 3rd accumulation of heat chamber 686 is arranged on article body of heater that bends 651 belows 91, the 3rd heat storage 683 is placed in the 3rd accumulation of heat chamber 686, the 3rd 686 one end, accumulation of heat chamber by extend passage 6861 from article bow 651 of center support bow 65 lead to 681 bottoms, the 3rd combustion chamber through extension upwards below, the 3rd accumulation of heat chamber 686 the other ends are connected to respectively the 3rd air and enter arm 687 and the 3rd combustion exhaust exhaust outlet 688.

As Fig. 1, Fig. 9, shown in Figure 10, the 3rd coal gas of epimere enters arm 682 passing and upwards leading to the 3rd combustion chamber 681 through quirk partition wall 635 from article bow 651 of center support bow 65 below, the 3rd accumulation of heat chamber 686 is arranged on article body of heater that bends 651 belows 91, the 3rd heat storage 683 is placed in the 3rd accumulation of heat chamber 686, the 3rd 686 one end, accumulation of heat chamber by extend passage 6861 from article bow 651 of center support bow 65 below through upwards leading to 681 bottoms, the 3rd combustion chamber through 635 extensions of quirk partition wall, the 3rd accumulation of heat chamber 686 the other ends are connected to respectively the 3rd air and enter arm 687 and the 3rd combustion exhaust exhaust outlet 688.

In like manner, as shown in Figure 9, Figure 10, the 4th combustion heater 69 structures are complete identical with the 3rd combustion heater 68, repeat no more here, and wherein the 4th combustion chamber 691 is connected and formed associated one group (shown in Fig. 1, Fig. 8) by chamber passage 6305 with the 3rd combustion chamber 681.

Wherein, as shown in Figure 6, the 3rd coal gas of the 3rd combustion chamber 681 of the 3rd burning heater 68 enter arm 682, the 3rd air enter arm 687 and the 3rd combustion exhaust exhaust outlet 688 respectively by the first coal gas bustle pipe 6684, the first air bustle pipe 6674, the first combustion exhaust bustle pipes 6694 and the first gas manifold 6681, the first air be in charge of 6671, the first combustion exhaust is in charge of 6691 and communicates.

As shown in Fig. 1, Fig. 6, Figure 10, the 4th coal gas of the 4th combustion chamber 691 of the 4th burning heater 69 enter arm 692, the 4th air enter arm 697 and the 4th combustion exhaust exhaust outlet 698 respectively by the second coal gas bustle pipe 6685, the second air bustle pipe 6675, the second combustion exhaust bustle pipe 6695 and the second gas manifold 6683, the second air be in charge of 6673, the second combustion exhaust is in charge of 6693 and communicates.

In sum, the 3rd burning heater 68, the 4th combustion heater 69 combustion principle and above the first burning heater 62, the second burning heater 60 are almost identical, repeat no more here.

As shown in Figure 1, Figure 10 shows, center support bow 65, because the quirk partition wall 635 of the indoor ringwall 612 of pyrolytic gasification and interior burning heater 67 is all arranged in furnace chamber, need center support bow 65 for it provides support, the laying of various pipelines is provided to again interior burning heater 67 simultaneously.

As shown in Figure 1, Figure 10 shows, center support bow 65 is arranged in the furnace chamber of pyrolysis vaporizer 61, interior burning heater 67 belows, mainly comprise bar bow 651, the Huo Gong center ringwall 652 of some, bar bends 651 one end and is fixed on Huo Gong center ringwall 652, the other end is fixed on body of heater 91, bar bow 651 is the radial layout of scattering in interval at a certain angle around ringwall 652 centers, Huo Gong center, fire bow 651 in this example is 12 bows, and quantity is consistent with the 3rd burning heater 68 the 4th burning heater 69 sums that are mutually related of interior burning heater 67.

As shown in Figure 1, Figure 10 shows, article one, in the body of wall of fire bow 651, the 3rd coal gas is set and enters the extension passage 6861 in arm 682 and the 3rd accumulation of heat chamber 686, the 4th coal gas arranging in the body of wall of tight another article of adjacent fire bow 651 enters the extension passage 6961 in arm 692 and the 4th accumulation of heat chamber 696, provide convenience to the pipeline laying of interior burning heater 67, make the various conduit arrangements of interior burning heater 67 orderly, be unlikely to interfere.

Second section water-gas reaction

Because coal gangue temperature in pyrolysis vaporizer is higher, then pass into water vapor to coal gangue, the charcoal in coal gangue pyrolysis after product and superheated vapour meet and carry out water-gas reaction generation water-gas (carbon monoxide and hydrogen).

As shown in Fig. 1, Figure 10, Figure 11, water-gas reaction device 7 comprises pyrolysis vaporizer 61, material heat sink 70, steam generation device 75.

As shown in Figure 1, pyrolysis vaporizer 61 is positioned at center support and bends 65 tops, and material heat sink 70, steam generation device 75 are positioned at center support and bend 65 belows.

As shown in Figure 1, shown in Figure 11, material heat sink 70 is arranged on and stretches out body of heater 91 bottoms, comprises high temperature cooling chamber 701, low temperature cooling chamber 702, cooling chamber's bridge bow 703; The top of high temperature cooling chamber 701 communicates with pyrolysis vaporizer 61 bottoms; High temperature cooling chamber 701 and low temperature cooling chamber 702 are setting up and down, and cooling chamber's bridge bow 703 is arranged between high temperature cooling chamber 701 and low temperature cooling chamber 702, and cooling chamber's bridge bow 703 comprises that bridge bow 7031, steam chest 704, steam enter siphunculus 707; Article 4, bridge bow 7031 is partitioned into spoke shape layout at an angle with high temperature cooling chamber 701 and the 702Zhou of low temperature cooling chamber center, bridge bends 7031 middle parts and forms steam chest 704, steam chest 704 is a cylindrical chamber, the top of steam chest 704 is provided with semisphere blast cap 708, and the lower openings of steam chest 704 is towards low temperature cooling chamber 702; Steam enters siphunculus 707 and is arranged in bridge bow 7031, and steam enters siphunculus 707 one end and leads to steam chest 704, and the other end stretches out outside body of heater 91.

As Fig. 1, shown in Figure 12, steam generation device 75 comprises annular hollow metal casing 755, steam pockets 754 and drum input tube 751, drum output tube 752, annular hollow metal casing 755 is arranged on body of heater 91 bottoms, the interior annular space chamber 758 of annular hollow metal casing 755 is connected to low temperature cooling chamber 702 bottoms of material heat sink 70, the big up and small down funnel-form of interior annular space chamber 758 annular cavity, 755 casees interior formation of annular hollow metal casing seal the body of heater water bag 753 for storage of water relatively, body of heater water bag 753 is connected to water inlet pipe and drum input tube 751, water inlet pipe communicates with water tank 757, drum input tube 751 is connected with steam pockets 754, the drum output tube 752 of steam pockets 754 enters siphunculus 707 the other ends with the steam of material heat sink 70 and communicates.

Water-gas reaction Principle Method of the present invention is:

(1), in steam pockets 754, water vapor enters siphunculus 707 by drum input tube 751 and steam and passes into water vapor to the low temperature cooling chamber 702 of material heat sink 70, water vapor blows to low temperature cooling chamber 702, except the solid product cooling to after pyrolytic gasification in low temperature cooling chamber 702, water vapor upwards seals in high temperature cooling chamber 701, give the cooling of the high-temp solid product after pyrolysis vaporizer 61 falls into a large amount of pyrolytic gasification of high temperature cooling chamber 701, water vapor, in lowering the temperature to the solid after pyrolytic gasification, improves vapor temperature and forms superheated vapour;

(2), superheated vapour enters pyrolysis vaporizer 61 through center support bow 65, and contact with the high-temperature coal spoil pyrolysis material of pyrolysis vaporizer 61, the charcoal after coal gangue pyrolysis in solid product and superheated vapour meet and carry out water-gas reaction generation water-gas (carbon monoxide and hydrogen);

(3), solid product after coal gangue pyrolytic gasification falls into high temperature cooling chamber 701 and the low temperature cooling chamber 702 of material heat sink 70 from pyrolysis vaporizer 61, the water vapor that upwards enters pyrolysis vaporizer 61 to passing through low temperature cooling chamber 702 and high temperature cooling chamber 701 is heated as overheated high-temperature water vapor again, again the solid product after coal gangue pyrolytic gasification is lowered the temperature simultaneously, in recycling low temperature cooling chamber 702, solid product waste heat adds thermosetting water vapor to the water in body of heater water bag 753, water vapor enters in steam pockets 754 by drum input tube 751, to supplementing a large amount of water vapors that consume because of water-gas reaction in steam pockets 754, water-gas reaction can uninterruptedly be carried out continuously.

The a large amount of generation of water-gas reaction of the present invention is to carry out in pyrolysis vaporizer 61 middle and lower parts, this is because the pyrolysis of coal gangue in Ci Duan pyrolysis vaporizer is relatively abundant, temperature is also relatively high, now pass into the water vapor of hyperthermia and superheating from the bottom of pyrolysis vaporizer 61, the charcoal in the solid product after overheated water vapor and coal gangue pyrolysis swashs and will produce a large amount of water-gas mutually; Certainly, water vapor is giving in high temperature cooling chamber 701 and low temperature cooling chamber 702 in the solid product temperature-fall period after coal gangue pyrolytic gasification, also can produce water-gas with charcoal remaining in solid product after coal gangue pyrolytic gasification, but the amount producing is relatively little, this height of charcoal remaining in solid product after this and coal gangue pyrolytic gasification is few, and steam temperature neither be too high relevant.

The waste heat of the relatively low solid product of the temperature of utilization of the present invention after coal gangue pyrolytic gasification carries out heat transmission and produces water vapor, the recycling water vapor solid product higher with temperature directly contacts generation superheated vapour, reach the temperature required of water-gas reaction, promote water-gas reaction more to fill part, both in reducing solid product temperature, produce again water vapor and superheated vapour, this technological method that consumes additional energy source that do not need meets energy-saving and cost-reducing that we advocate today, the theory of Sustainable development.

Section three, raw gas take-up gear

Coal gangue produces the gas containing a lot of useful compositions in high temperature pyrolysis and gasification process, charcoal in coal gangue pyrolysis after product and superheated vapour carry out water-gas reaction and generate water-gas (carbon monoxide and hydrogen), more than be referred to as raw gas, need to derive to utilize raw gas.

As shown in Fig. 1, Fig. 8, Fig. 9, raw gas take-up gear 8, comprises raw gas concentration chamber 81, interior derivation passage 82, and outer derivation passage 83, derivation main channel 84, derive circuit 85; It is integrally formed that raw gas concentration chamber 81 is arranged on top and the pyrolysis vaporizer 61 of pyrolysis vaporizer 61; As shown in Fig. 1, Fig. 8, article 6, in, deriving passage 82 arranges in quirk partition wall 635, interior derivation feeder connection 821 leads to pyrolysis vaporizer 61 through interior ringwall 612 middle parts, the raw gas concentration chamber 81 that interior derivation channel outlet 822 is led to pyrolysis vaporizer top through interior ringwall 612; As shown in Fig. 1, Fig. 8, article 6, the outer passage 83 of deriving arranges in the exterior wall of body of heater 91, lower outside derivation feeder connection 831, upper outside derivation feeder connection 834 lead to pyrolysis vaporizer 61 through outer ring wall 611 middle parts, the raw gas concentration chamber 81 that outer derivation channel outlet 832 is led to pyrolysis vaporizer top through outer ring wall 611.

As shown in Figure 1, Figure 7 shows, deriving main channel 84 is arranged in the exterior wall of body of heater 91 of coal heat decomposition stove, derivation main channel entrance 841 communicates with raw gas concentration chamber 81 and extends up in the exterior wall top derivation circuit 85 that body of heater 91 is set again, and derives circuit 85 and is provided with raw gas export mouth 851, raw gas export mouth 852.

As Fig. 1, Fig. 7, Fig. 8, shown in Fig. 9, in this example because pyrolysis vaporizer's 61 annular chamber, so raw gas concentration chamber 81 is corresponding annular chamber also, article 6, in, deriving passage 82 is separately positioned in 6 road quirk partition walls 635, lead to pyrolysis vaporizer 61 through interior ringwall 612, article 6, outer derive passage 83 be separately positioned in the middle of body of heater 91 exterior walls through and outer quirk partition wall 625 and outer ring wall 611 lead to pyrolysis vaporizer 61, wherein, because the circumference of pyrolysis vaporizer 61 is longer, so at the interior ringwall 612 of pyrolysis vaporizer 61, on outer ring wall 611, be respectively arranged with and in 6, derive feeder connection 821 and lower outside derivation feeder connection 831, upper outside derivation feeder connection 834, again because the height of pyrolysis vaporizer 61 is high, interior derivation feeder connection 821 and lower outside derivation feeder connection 831, the setting of staggering up and down of upper outside derivation feeder connection 834, as shown in Figure 1, interior derivation feeder connection 821 is higher than lower outside derivation feeder connection 831, but lower than upper outside derivation feeder connection 834 places, this example adopts this structure can better derive the raw gas that in pyrolysis vaporizer 61, different sections produce, also be provided with 6 the larger raw gas of sectional area main channels 84 around raw gas concentration chamber 81 in addition and lead to derivation circuit 85, the object arranging like this can conveniently derive a large amount of raw gas in raw gas concentration chamber 81.

As shown in Figure 1, on the exterior wall of body of heater 91, be provided with the raw gas temperature monitoring holes 811 that leads to raw gas concentration chamber 81, in raw gas temperature monitoring holes 811, place raw gas temperature table 812.

As shown in figure 13, raw gas temperature table 812 is electrically connected with industry control center 90, and temperature in raw gas concentration chamber 81 is monitored by raw gas temperature table 812 in industry control center 90.

This routine feature enters from interior derivation feeder connection 821 raw gas that different sections produce in pyrolysis vaporizer 61 interior derivation passage 82 respectively, entering outer derivation passage with lower outside derivation feeder connection 831, upper outside derivation feeder connection 834 goes out in 83 to collect in raw gas concentration chamber 81 again, certainly a large amount of raw gas in pyrolysis vaporizer 61 are directly to rise up in raw gas concentration chamber 81, enter derivation circuit 85 by deriving main channel 84, finally discharge from raw gas export mouth 851.

Section four, continuous pyrolysis gasification

Comprehensively above-mentioned, this routine feature is that coal gangue pyrolysis, gasification (water-gas reaction), steam generation, raw gas are derived to process integration in same body of heater, makes coal gangue pyrolysis, gasification (water-gas reaction), steam generation, raw gas be able to continuous realization.

As shown in Figure 1, coal gangue pyrolytic gasification stove 9 comprise body of heater 91, enter furnace charge storehouse 92, coal gangue pyrolysis gasifying device 93, raw gas take-up gear 8, hinge cage sealing discharging device 96, product feed bin 94, coal gangue pyrolysis gasifying device 93 comprises coal gangue pyrolysis installation 6, water-gas reaction device 7, and the concrete structure of coal gangue pyrolysis installation 6, water-gas reaction device 7, raw gas take-up gear 8 is shown in the above, enter furnace charge storehouse 92 and be arranged on body of heater 91 tops, body of heater 91 tops are provided with into stove cloth passage 921, enter stove cloth passage 921 upper ends and enter furnace charge storehouse 92 and communicate, entering stove cloth passage 921 lower ends communicates with pyrolysis vaporizer 61 tops of coal gangue pyrolysis installation 6, hinge cage sealing discharging device 96 is arranged on 758 bottoms, interior annular space chamber of the annular hollow metal casing 755 of the steam generation device 75 of water-gas reaction device 7, product feed bin 94 is placed in body of heater 91 bottoms, on product feed bin 94, connect hinge cage sealing discharging device 96, hinge cage sealing discharging device 96 belongs to prior art, as the sealing discharging device on market, sealing material returning device, sealing blanking device etc.

The method of this routine continuous pyrolysis gasification is:

(1), by controlling stove coal gangue rotary conveyor 95, the stove coal gangue pellet that enters after damping dehydration is sent in furnace charge storehouse 92, then enter by entering stove cloth passage 921 in the pyrolysis vaporizer 61 of coal gangue pyrolysis installation 6;

(2) after purifying in outer gas-operated thermal bath facility 64, by coal gangue pyrolysis installation 6, interior gas-operated thermal bath facility 67, gas-fired provides thermal source to pyrolysis vaporizer 61, and coal gangue carries out pyrolysis in pyrolysis vaporizer 61 under hot environment;

(3), pass into high-temperature water vapor by water-gas reaction device 7 from pyrolysis vaporizer 61 bottoms, and the coal gangue pyrolysis material hot with the high temperature of pyrolysis vaporizer 61 contact, the charcoal in the solid product after coal gangue pyrolysis and superheated vapour meet and carry out water-gas reaction and generate water-gas;

(4), solid product after coal gangue pyrolytic gasification falls into high temperature cooling chamber 701 and the low temperature cooling chamber 702 of material heat sink 70 from pyrolysis vaporizer 61, the water vapor that upwards enters pyrolysis vaporizer 61 to passing through low temperature cooling chamber 702 and high temperature cooling chamber 701 is heated as overheated high-temperature water vapor again, again the solid product after coal gangue pyrolytic gasification is lowered the temperature simultaneously, in recycling low temperature cooling chamber 702, solid product waste heat adds thermosetting water vapor to the water in the body of heater water bag 753 of the annular hollow metal casing 755 of steam generation device 75, water vapor enters in steam pockets 754 by drum input tube 751, to supplementing a large amount of water vapors that consume because of water-gas reaction in steam pockets 754,

(5), steam pockets 754 enters siphunculus 707 by drum input tube 752 and steam and passes into water vapor to the low temperature cooling chamber 702 of material heat sink 70 again, and water-gas reaction can uninterruptedly be carried out continuously;

(6) gas that, coal gangue produces in high temperature pyrolysis process and carry out water-gas reaction generate water-gas (carbon monoxide and hydrogen), be referred to as raw gas, raw gas is derived by the raw gas take-up gear 8 arranging on body of heater, to carry out recovery of chemical products and utilization, derivation main channel 84 processes that simultaneously raw gas of comparatively high temps enters raw gas take-up gear from pyrolysis vaporizer 61 tops are again to carrying out preheating from the coal gangue pellet that just enters stove that enters pyrolysis vaporizer 61 tops that stove cloth passage 921 enters;

(7) according to coal gangue pyrolytic gasification degree, control hinge cage sealing discharging device 96 in good time and open or close, the solid product after coal gangue high temperature pyrolysis and gasification cooling in low temperature cooling chamber 702 and interior annular space chamber 758 is entered in product feed bin.

This example by coal gangue pyrolytic gasification process integration at the hot body of heater of same coal, realize continuous coal gangue pyrolytic gasification, production efficiency is high, the required factory building face of equipment is little, human cost is low, utilize in the solid product after pyrolytic gasification waste heat to produce water vapor, the solid product after utilizing again water vapor to high temperature pyrolysis and gasification is lowered the temperature and is produced the needed high humidity superheated vapour of water-gas reaction simultaneously, has the feature of low consumption, environmental protection simultaneously.

The comprehensive cyclic utilization of Part IV, pyrolysis of coal gas

Chapter 1, the reclaiming clean utilization of raw gas (change and produce)

First segment raw gas condensing works

Coal gangue pyrolytic gasification discharge raw gas temperature is higher, carries before recovery of chemical products for the ease of high temperature raw gas, high temperature raw gas is sprayed to ammoniacal liquor and carry out cooling.

The reclaiming clean of second section raw gas

Raw gas after ammoniacal liquor sprays carries out gas-liquid separation, in mixed solution after gas-liquid separation, contain multiple useful organic component and refine other auxiliary product for industry as carbolic oil, naphtalene oil, washing oil, carbolineum etc., coal gas after gas-liquid separation is after air cooling cooling, after dry method reclaiming clean reclaims, become purified gas, purified gas can store for burning.

Chapter 2, raw gas reclaiming clean afterfire utilizes

Purified gas burning after first segment raw gas reclaiming clean

Purified gas after absorption provides thermal source for burning to coal gangue pyrolytic gasification.

After second section utilizes purified gas burning, waste gas is to saturated active coke regeneration heating

For form saturated active coke because of adsorption cleaning raw gas, to evaporate thermal regeneration be unsaturated activated coke to hot waste gas after purified gas burning.

Section three, utilize the rear hot waste gas of purified gas burning to entering the damping of stove coal gangue pellet

Hot waste gas after purified gas burning is for carrying out damping dehydration to the coal gangue pellet that enters stokehold.

Chapter 3, the continuous coal gangue pyrolytic gasification of thermal cycling is comprehensive

The continuous coal gangue pyrolytic gasification of first segment thermal cycling and damping and tail gas clean-up

Hot waste gas after purified gas burning, for the coal gangue pellet that enters stokehold is carried out to damping dehydration, carries out water again and washes one's hair purification and cooling after hot waste gas dehydration, finally reach clean discharged at lower temperature.

The continuous coal gangue pyrolytic gasification of second section thermal cycling composite technology

Comprehensive above content draws the complete composite technology of the continuous coal gangue pyrolytic gasification of a kind of thermal cycling, includes stove coal gangue hot waste gas damping dehydration, coal gangue pyrolytic gasification, raw gas condensation, raw gas reclaiming clean, tail gas water and washes one's hair purification etc.

Section three, the control of the continuous coal gangue pyrolytic gasification of thermal cycling composite technology

The various electrical equipments that use in the techniques such as the UTILIZATION OF VESIDUAL HEAT IN of the hot waste gas after the present invention is burnt, burnt by coal gangue pyrolytic gasification, raw gas reclaiming clean, purified gas are controlled, and make the continuous coal gangue pyrolytic gasification of thermal cycling smooth.

Above content introduction just exemplifies a tool embodiment of thermal cycling continuous coal gangue pyrolytic gasification integration unit and technique, does not form the restriction to this case thermal cycling continuous coal gangue pyrolytic gasification integration unit and technique protection domain.

Claims

1. the water-gas reaction method of coal gangue pyrolytic gasification, is characterized in that: the equipment that present method relates to comprises pyrolysis vaporizer, material heat sink, steam generation device, and concrete steps are: