CN103450943B - External-heat water-gas gasification process - Google Patents

External-heat water-gas gasification process Download PDF

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CN103450943B
CN103450943B CN201310346021.4A CN201310346021A CN103450943B CN 103450943 B CN103450943 B CN 103450943B CN 201310346021 A CN201310346021 A CN 201310346021A CN 103450943 B CN103450943 B CN 103450943B
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gas
water
combustion chamber
heating
combustion
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CN103450943A (en
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王新民
钱纳新
王松林
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Shanxi Xinli Energy Technology Co Ltd
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Shanxi Xinli Energy Technology Co Ltd
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Abstract

The present invention relates to the technology of gas maked coal, particularly utilize the external-heat water-gas gasification process of smokeless char water gas, technical problem to be solved there is provided that a kind of method is simple, water-gas output is large, the external-heat water-gas gasification process that during production synthetic gas, energy consumption is low, the technical scheme adopted is that steam enters siphunculus and passes into water vapor to material cooling chamber, high-temp solid product cooling after feedwater gas gasification, forms superheated vapour simultaneously; Superheated vapour enters the vaporizer of gasification installation, and high temperature smokeless char material meets and carries out water-gas reaction and generate the hot water-gas of high temperature; Water-gas hot for high temperature is passed into hot gas heating-type vapor generating unit heating water and form water vapor, then the water vapor that hot gas heating-type vapor generating unit produces is passed into steam and enters siphunculus, supplement the water vapor required because of water-gas reaction; It is large that the present invention obtains water-gas output, and hydrogen content is high, is desirable synthetic gas product, can as the reducing gas of direct-reduced iron.

Description

External-heat water-gas gasification process
Technical field
The present invention relates to the technology of gas maked coal, particularly utilize the external-heat water-gas gasification process of smokeless char water gas.
Background technology
Water-gas is a kind of low-heat value gas of water vapour by obtaining with scorching hot hard coal or coke effect, and main component is hydrogen and carbon monoxide, and following water-gas reaction mainly occurs for carbon and steam:
C+H2O===(high temperature) CO+H2
More than reaction is thermo-negative reaction, therefore must to heat supply in vapourizing furnace.Usually, first send air to enter stove, burn part of fuel, heat is stored in fuel bed and regenerator, then steam is passed into scorching hot fuel bed and react.Due to endothermic heat of reaction, when fuel bed and regenerator temperature drop to certain temperature, send air to enter stove again and heat up, so circulate.
Industrial at present, the production of water-gas generally adopts resting period formula fixed bed production technology.Furnace construction adopts UGI(to improve the pattern of company's (United Gas Improvement Compan names) vapourizing furnace with American Association gas, and its advantage is that equipment is simple, easy handling; Shortcoming is: because atmospheric operation production intensity is low, during the synthetic gas of need of production high pressure, energy consumption is high, production efficiency is low, the water-gas generating capacity of every square metre of burner hearth area is about 1000m3/h, require stricter to coal, usual palpus adopts the hard coal or the coke that there are certain particle size requirement, process pipe more complicated during employing periodical operation.For UGI vapourizing furnace, country has prohibited new upper fixed intermittent layer gasification technique (UGI), clear and definite requirement is had to this in National Development and Reform Committee's on July 7th, 2006 " National Development and Reform Commission promotes about strengthening Coal Chemical Engineering Project implementation management the notice that industry develops in a healthy way " (send out and change No. 1350, industry), in the long term, due to raw material restricted gender, the backward in technique and environmental issue of UGI gasification itself, to be badly in need of substitute by the Coal Gasification Technology of advanced person.
The present inventor for a long time to the research of technical matters of water-gas gasification, innovate a set of utilize low-rank coal (brown coal) pyrolysis after smokeless char to produce the brand new technical of water-gas, the hard coal that the present invention is also applicable to certainly or coke production water-gas technology.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, and technical problem to be solved there is provided that a kind of method is simple, water-gas output large, the external-heat water-gas gasification process that when producing synthetic gas, energy consumption is low.
For solving the problems of the technologies described above, the technical scheme adopted is external-heat water-gas gasification process, and the method relates to that equipment comprises gasification installation, material cooling chamber, steam enter siphunculus, hot gas heating-type vapor generating unit, and step is:
(1), steam enters siphunculus and passes into water vapor to material cooling chamber, water vapor blows to material cooling chamber, to the high-temp solid product cooling after water-gas a large amount of in material cooling chamber gasification, while the solid of water vapor after giving gasification carries out lowering the temperature, improve steam temperature and form superheated vapour;
(2), superheated vapour enters the vaporizer of gasification installation, and contacts with the high temperature smokeless char material of vaporizer, and the charcoal in smokeless char and superheated vapour meet and carry out water-gas reaction and generate the hot water-gas of high temperature;
(3), water-gas hot for high temperature is passed into hot gas heating-type vapor generating unit heating water and form water vapor, again the water vapor that hot gas heating-type vapor generating unit produces is passed into steam and enter siphunculus, supplement because of a large amount of water vapors needed for water-gas reaction, water-gas reaction can uninterruptedly be carried out continuously;
(4), above-mentioned 2nd step, vaporizer by outer gas-operated thermal bath facility, interior gas-operated thermal bath facility adopt duplex combustion chamber and commutation accumulation of heat heating means provide institute's heat requirement to water-gas reaction.
The heating means of described outer gas-operated thermal bath facility duplex combustion chamber and commutation accumulation of heat, the method relates to equipment and comprises outer gas-operated thermal bath facility, gas reversing system, outer gas-operated thermal bath facility comprises the first combustion heater, second combustion heater of at least one group of identical association of structure, the first described combustion heater mainly comprises the first combustion chamber, the first coal gas enters arm and the first regenerative heat exchanger, second combustion heater structure also comprises the second combustion chamber, the second coal gas enters arm and the second regenerative heat exchanger, and the step of the method is:
(1), air is blasted the first regenerative heat exchanger by gas reversing system, enter in the first combustion chamber enter heating after the first regenerative heat exchanger heating after, purified gas blasts in the first combustion chamber and burns by gas reversing system, waste gas in first combustion chamber after purified gas burning enters into the second combustion chamber, then is discharged by gas reversing system after the second regenerative heat exchanger heat absorption;
(2), reach setting combustion time, air is blasted the second regenerative heat exchanger by gas reversing system, enter in the second combustion chamber enter heating after the second regenerative heat exchanger heating after, purified gas blasts in the second combustion chamber and burns by gas reversing system, waste gas in second combustion chamber after purified gas burning enters into the first combustion chamber, then is discharged by gas reversing system after the first regenerative heat exchanger heat absorption.
The heating means of described interior gas-operated thermal bath facility duplex combustion chamber and commutation accumulation of heat, the method relates to equipment and comprises interior gas-operated thermal bath facility, gas reversing system, interior gas-operated thermal bath facility comprises the 3rd combustion heater, the 4th combustion heater of at least one group of identical association of structure, the 3rd described combustion heater mainly comprises the 3rd combustion chamber, the 3rd coal gas enters arm and the 3rd regenerative heat exchanger, 4th combustion heater structure also comprises the 4th combustion chamber, the 4th coal gas enters arm and the 4th regenerative heat exchanger, and the step of the method is:
(1), air is blasted the 3rd regenerative heat exchanger by gas reversing system, enter in the 3rd combustion chamber enter heating after the 3rd regenerative heat exchanger heating after, purified gas blasts in the 3rd combustion chamber and burns by gas reversing system, waste gas in 3rd combustion chamber after purified gas burning enters into the 4th combustion chamber, then is discharged by gas reversing system after the 4th regenerative heat exchanger heat absorption;
(2), reach setting combustion time, air is blasted the 4th regenerative heat exchanger by gas reversing system, enter in the 4th combustion chamber enter heating after the 4th regenerative heat exchanger heating after, purified gas blasts in the 4th combustion chamber and burns by gas reversing system, waste gas in 4th combustion chamber after purified gas burning enters into the 3rd combustion chamber, then is discharged by gas reversing system after the 3rd regenerative heat exchanger heat absorption.
The present invention is swashed mutually by the smokeless char after water vapor and scorching hot low-rank coal (brown coal) pyrolysis and obtains water-gas, and water-gas output is large, and hydrogen content is high, carbon monoxide and hydrogen reasonable ratio, and other component content is low, is desirable synthetic gas product; The present invention utilizes the waste heat of high-temperature water gas to carry out heating water to become water vapor, realize supplementing the water vapor needed for water gas two-stage gasifier, utilize the waste heat of high-temperature water gas to the smokeless char preheating entering stove simultaneously, water-gas is gasified carried out continuously, be different from existing gap method, production efficiency greatly improves.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is continuous external heating type water-gas vapourizing furnace schematic diagram of the present invention;
Fig. 2 is gas diverter schematic diagram of the present invention;
Gas diverter of the present invention coils schematic diagram to Fig. 3;
Fig. 4 is gas diverter lower wall schematic diagram of the present invention;
Fig. 5 is A-B place cross-sectional schematic in Fig. 3;
Fig. 6 is gas diverter of the present invention and combustion heater pipe network connection diagram;
Fig. 7 is continuous external heating type water-gas vapourizing furnace schematic cross-section one of the present invention, is also t-t place schematic cross-section in Fig. 1;
Fig. 8 is continuous external heating type water-gas vapourizing furnace schematic cross-section two of the present invention, is also u-u place schematic cross-section in Fig. 1;
Fig. 9 is continuous external heating type water-gas vapourizing furnace schematic cross-section three of the present invention, is also v-v place schematic cross-section in Fig. 1;
Figure 10 is continuous external heating type water-gas vapourizing furnace schematic cross-section four of the present invention, is also x-x place schematic cross-section in Fig. 1;
Figure 11 is continuous external heating type water-gas vapourizing furnace schematic cross-section five of the present invention, is also y-y place schematic cross-section in Fig. 1;
Figure 12 is continuous external heating type water-gas vapourizing furnace schematic cross-section six of the present invention, is also z-z place schematic cross-section in Fig. 1;
Figure 13 is industry control central electrical connection diagram of the present invention;
Figure 14 is continuous external heating type water-gas gasification comprehensive device of the present invention composition schematic diagram;
Figure 15 is continuous external heating type water-gas vapourizing furnace schematic cross-section seven of the present invention, is also w-w place schematic cross-section in Fig. 1;
Figure 16 is the cross-sectional schematic of feeding chamber of the present invention, is also a-a place schematic cross-section in Figure 17;
Figure 17 is feeding chamber cross sectional representation of the present invention, is also b-b place schematic cross-section in Figure 19;
Figure 18 is the water gas pipe line schematic diagram of feeding chamber of the present invention, is also c-c place schematic cross-section in Figure 19;
Figure 19 is feeding chamber schematic diagram of the present invention;
Figure 20 is that the atomized spray that tail gas water of the present invention washes one's hair cleaner arranges schematic diagram in the form of a ring in purification cylindrical shell, is also d-d place schematic cross-section in Figure 14.
Embodiment
The specific embodiment of continuous external heating type water-gas gasification comprehensive technique of the present invention is mainly introduced in detail following.
First part's low-rank coal Task-size Controlling
Low-rank coal (brown coal) pyrolysis process is obtained smokeless, anhydrous, the low ash of 10 ~ 50mm granularity, highly active smokeless char as water-gas gasified raw material, in this size range, smokeless char raw material water-gas reaction is more abundant, but this does not form the restriction of the present invention to required low-rank coal (brown coal), and the present invention is equally applicable to carry out water-gas reaction to hard coal or coke.
The preheating of second section smokeless char
As shown in Figure 19, Figure 16: pre-heating cabin 1, comprise housing 11, hot gas interchanger 13, blanking bin 14; The feed bin 111 being used for smokeless char preheating is formed in housing 11, feed bin 111 relative closure top is only provided with opening for feed 112, be provided with closed infeed belt conveyor 17(at opening for feed 112 place and refer to the transfer roller covered by belt with its circumferential closed barrel-shaped casing of a both ends open, smokeless char is prevented to be scattered, keep Working environment neat and tidy), blanking bin 14 is arranged on bottom housing 11 and communicates with feed bin 111, blanking bin 14, for temporarily depositing the smokeless char after preheating, connects the charging valve 15 with gas sealing function bottom blanking bin 14.
As shown in Figure 14, Figure 16, Figure 17, Figure 19, hot gas interchanger 13 comprises high temperature hot gas admission passage 131, high temperature hot gas enters room 132, radiating pipe 133, radiating pipe serial connection passage 134, cryogenic gas discharge chamber 136; High temperature hot gas admission passage 131 one end is connected with water-gas bustle pipe 85, high temperature hot gas admission passage 131 the other end and high temperature hot gas enter room 132 and communicate, high temperature hot gas enters room 132 and is arranged on a sidewall of housing 11, cryogenic gas discharge chamber 136 is arranged on high temperature hot gas and enters on the opposite side sidewall of room 132, and cryogenic gas discharge chamber 136 is provided with cryogenic gas exhaust channel 138; Several radiating pipes serial connection passage 134 is parallel feed bin 111 inside being transverse in housing 11 between two, being connected on high temperature hot gas enters between room 132 and cryogenic gas discharge chamber 136, one end 1341 and the high temperature hot gas of upper radiating pipe serial connection passage 134 enter that room 132 communicates and the other end 1342 is closed, one end 1341 of next radiating pipe serial connection passage 134 is closed and the other end 1342 communicates with cryogenic gas discharge chamber 136, and the rest may be inferred.
As Figure 19, Figure 16, shown in Figure 17, several radiating pipes 133 also adopt metallic substance to make, several radiating pipes 133 are spaced on radiating pipe serial connection passage 134, radiating pipe 133 is in " U " type, one end is connected on parallel upper radiating pipe serial connection passage 134, the other end be connected on parallel next radiating pipe serial connection passage 134 on, by mutually through for radiating pipe parallel between two serial connection passage 134, enter room 132 by high temperature hot gas to connect with cryogenic gas discharge chamber 136, this example arranges many radiating pipes 133 and radiating pipe serial connection passage 134, to increase the contact area with smokeless char, improve the pre-thermo-efficiency of smokeless char.
As shown in Figure 19, Figure 16, radiating pipe 133 is connected on radiating pipe serial connection passage 134 in inverted U interval, radiating pipe serial connection passage 134 arrangement in two rows, certainly can suitably increase or reduce the quantity of radiating pipe 133 on radiating pipe serial connection passage 134 and the quantity of radiating pipe serial connection passage 134 itself, this as required the smokeless char of preheating the situation such as amount, humidity and temperature and determine.
As shown in Figure 19, Figure 16, the top of radiating pipe 133 in inverted U is wedge 1331, and this is conducive to being scattered of smokeless char.
As shown in Figure 13, Figure 14, one end of rotary conveyor 17 is placed in by bucket elevator 18, the other end of rotary conveyor 17 is placed in opening for feed 112 place, bucket elevator 18, infeed belt conveyor 17, charging valve 15 are connected with industry control center 90, automatically control the work by bucket elevator 18, infeed belt conveyor 17, charging valve 15 by industry control center 90.
This routine smokeless char pre-heating mean is:
(1), as shown in Figure 14, Figure 19, by bucket elevator 18, low-rank coal (brown coal) pyrolysis process is obtained smokeless, anhydrous, low ash, highly active smokeless char delivers to closed infeed belt conveyor 17, close infeed belt conveyor 17 and smokeless char is sent in the feed bin 111 of housing 11 from the coal inlet 112 of feed bin 111;
(2), the hot high-temperature water gas that smokeless for high temperature carbon and steam mutually radical row water-gas reaction produce is passed into high temperature hot gas from high temperature hot gas admission passage 131 enters room 132 simultaneously, flow in radiating pipe 133 by radiating pipe serial connection passage 134 again, another adjacent heat radiation pipe again by being connected with radiating pipe 133 is connected in series passage 134 and flows in cryogenic gas discharge chamber 136, last cryogenic gas exhaust channel 138 is discharged
(3) the lower coal bunker 14 that the smokeless carbon, after preheating finally falls into housing 11 bottom is temporarily deposited, by charging valve 15 start or stop water-gas reaction operation together with closing and delivering to down, from and constantly to the feed bin 111 of housing 11, supplement new smokeless char pellet by closing infeed belt conveyor 17, realize the continuously dehydrating of smokeless char dry.
This example carries out preheating by high-temperature water gas to the smokeless carbon in feed bin 111, has both utilized the heat energy of high-temperature water gas, is minimized again to high-temperature water gas outflow temperature simultaneously, does not need to consume the extra energy, saves production cost, recycling economy.
In order to keep the neat and tidy of environment, the tail gas after burning washes one's hair qualified discharge after the process of cleaner 16 purifying and cooling by tail gas water.
As shown in Figure 14, Figure 20, tail gas water washes one's hair that cleaner 16 comprises purification cylindrical shell 161, atomized spray 162, stainless steel filter wire stratum reticulare 163, tank 165, water reservoir 166, sprays water pump 167, tail gas pod 164, tail gas enter pipe 169; Purification cylindrical shell 161 top arranges exhaust port 168, and atomized spray 162, stainless steel filtration silk screen 163, tail gas pod 164, tank 165 all arrange in purification cylindrical shell 161; Water reservoir 166, sprinkling water pump 167 all arrange outside purification cylindrical shell 161; Tank 165 arranges the bottom of purification cylindrical shell 161, spoil disposal pipeline 1650 is provided with bottom tank 165, tail gas pod 164 is arranged on the top of tank 165, tail gas pod 164 connects tail gas and enters pipe 169, tail gas enters the top that pipe 169 one end is arranged on tank 165, tail gas enter pipe 169 the other end pass purification cylindrical shell 161 communicate with the external world; Stainless steel filter wire stratum reticulare 163 is provided with above tail gas pod 164, above stainless steel filter wire stratum reticulare 163, atomized spray 162 is set, atomized spray 162 is connected on water inlet pipe 1601, water inlet pipe 1601 stretches out outside purification cylindrical shell 161 to be connected with water inlet bustle pipe 1602, water inlet bustle pipe 1602 is purify cylindrical shell 161 periphery in the form of a ring around the home, water inlet bustle pipe 1602 is connected with sprinkling water pump 167 by water inlet supervisor 160, spray water pump 167 and be connected to water absorption tube 1603, water absorption tube 1603 stretches in water reservoir 166; Water reservoir 166 is also communicated with tank 165 through purification cylindrical shell 161 by communicating pipe 1604.
As shown in figure 14, access opening 1611 is offered at purification cylindrical shell 161 wall above stainless steel filter wire stratum reticulare 163, one is facilitate workman to enter in purification cylindrical shell 161 atomized spray 162 damaged, stainless steel filter wire stratum reticulare 163 keeps in repair, two is regularly can remove the plaster of alluvial on stainless steel filter wire stratum reticulare 163 by artificial, purification cylindrical shell 161 wall above tank 165 offers water-in 1612, by injecting clean water in water-in 1612 pairs of tanks 165, ensure to change the sewage of dust suction in tank 165, offer into water overflow port 1613 at purification cylindrical shell 161 wall near tank 165 edge, the unnecessary water of tank 165 can be discharged from here, the water in tank 165 is avoided to flood the opening of tail gas pod 164 too much, cause tail gas to enter to be obstructed.
As Figure 20, shown in Figure 14, for to filtering dust in tail gas better, multiple atomized spray 162 161 to be arranged in the form of a ring in purification cylindrical shell, stretched out outside purification cylindrical shell 161 by many water inlet pipes 1601 and connect with water inlet bustle pipe 1602, in addition can also in purification cylindrical shell 161 from bottom to top interval many group atomized spray 162 are set, stainless steel filter wire stratum reticulare 163, and from bottom to top, the order number of stainless steel filter wire stratum reticulare 163 increases gradually, this tail gas water washes one's hair the atomized spray 162 that cleaner 16 is provided with 3 groups, stainless steel filter wire stratum reticulare 163, this not only can obtain cleaner tail gas, and can also lower the temperature to the tail gas of heat.
As shown in figure 13, spray water pump 167 to be connected, by the work of industry control center 90 automatic spraying water pump 167 with industry control center 90.
The Principle Method that this routine tail gas water washes one's hair purification is:
(1) tail gas, after burning enters pipe 169 by tail gas and enters the tail gas pod 164 purified in cylindrical shell 161, blow to the water surface in the tank 165 of below, the dust that in tail gas, particle is larger, through the absorption of flow surface, is sunk to tank 165 end in the water of immersion tank and is discharged by spoil disposal pipeline 1650;
(2) tail gas, after flow surface absorption upwards filters through stainless steel filter wire stratum reticulare 163, elimination tail gas major part dust;
(3), after stainless steel filter wire stratum reticulare 163 filters tail gas enters the water smoke layer that atomized spray 162 water spray is formed again, through exhaust port 168 qualified discharge of water smoke layer cleaning by purification cylindrical shell 161 top in tail gas.
In order to allow discharge tail gas in dustiness be reduced to minimum, on it, (3) supplements further and is: after stainless steel filter wire stratum reticulare 163 filters, tail gas enters the water smoke layer that atomized spray 162 is formed again, the stainless steel filter wire stratum reticulare 163 upwards entering order number larger in tail gas after the cleaning of water smoke layer filters again, the water smoke layer cleaning that atomized spray 162 is formed above the stainless steel filter wire stratum reticulare 163 that this order number is larger again, finally by exhaust port 168 qualified discharge at purification cylindrical shell 161 top.
Part III smokeless char high-temperature gasification and water-gas gasification are sent out should
First segment smokeless char high-temperature gasification heats
As shown in Figure 1, gasification installation 6 is arranged in the middle part of body of heater 91, mainly comprises vaporizer 61, outer gas-operated thermal bath facility 64, interior gas-operated thermal bath facility 67, gas reversing system 66, central supported bow 65, as Fig. 1, Fig. 7, Fig. 8, shown in Fig. 9: vaporizer 61 is by ringwall 612 in fire-resistant thermally conductive material, outer ring wall 611 forms an annulus, vaporizer 61 top with enter stove cloth passage 921 and communicate, being centered around vaporizer outer ring wall 611 ring is outward outer gas-operated thermal bath facility 64, be interior gas-operated thermal bath facility 67 in ringwall 612 ring in vaporizer, wherein outer gas-operated thermal bath facility 64 is mainly first combustion heater 62 of some groups of (this example 9 groups) identical associations of structure, second combustion heater 60 is formed, as Fig. 1, Fig. 8, shown in Fig. 9: because smokeless char needs to reach certain temperature and could gasify, vaporizer 61 is divided into epimere preheating from top to bottom, and heating is continued in stage casing, and hypomere is mainly gasification reaction three phases, so vaporizer 61 highly needs design higher, corresponding outer gas-operated thermal bath facility 64 is also mainly divided into, in, lower Three-section type heating, every section of first combustion heater 62 by 9 groups of identical associations of structure, second combustion heater 60 is formed, and interior gas-operated thermal bath facility 67 is mainly divided into, lower two-section type heating, every section by 6 groups of identical 3rd combustion heaters 68 mutually of structure, 4th combustion heater 69 is formed.
As Fig. 1, Fig. 9 show, the first described combustion heater 62 mainly comprises the first combustion chamber 621, first coal gas and enters arm 622 and the first regenerative heat exchanger 624, first coal gas and enter arm 622 and lead in the first combustion chamber 621 through body of heater 91 exterior wall.
As shown in Fig. 1, Fig. 9, body of heater 91 exterior wall that the first combustion chamber 621 is built into by refractory materials and fire-resistant thermally conductive material are built into the gas-fired quirk that vaporizer outer ring wall 611 and outer quirk partition wall 625 surround a relative closure.
As shown in Fig. 1, Fig. 9, the first regenerative heat exchanger 624 comprises the first thermal 626, first heat storage 623, first air and enters arm 627 and the first combustion exhaust exhaust outlet 628; First thermal 626 is arranged in body of heater 91 exterior wall, first heat storage 623 arranges in the first thermal 626, first thermal 626 one end is led to bottom the first combustion chamber 621, and the other end is connected to the first air respectively and enters arm 627 and the first combustion exhaust exhaust outlet 628.
As shown in Figure 9, enter at the first air and to be provided with the first one-way air valve 629, first one-way air valve 629 between arm 627 and the first thermal 626 and to allow air to enter pipe 627 from the first air and the first thermal 626 flows into the first combustion chamber 621; The first unidirectional waste gas valve 620 is provided with between the first combustion exhaust exhaust outlet 628 and the first thermal 626, first unidirectional waste gas valve 620 allows gas-fired waste gas to flow through the first thermal 626 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 and the first air are in charge of 6671 connections, air supervisor 667 and the second air are in charge of 6673 and are 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 and are in and are connected, the effect of replacement first one-way air valve 629 and the first unidirectional waste gas valve 620 can be played).
In like manner, as shown in Figure 9: identical second combustion heater 60 of structure mainly comprises the second combustion chamber 601, second coal gas and enters arm 602 and the second regenerative heat exchanger 604.
As shown in Figure 9: body of heater 91 exterior wall that the second combustion chamber 601 is built into by refractory materials and fire-resistant thermally conductive material are built into the gas-fired quirk that vaporizer outer ring wall 611 and outer quirk partition wall 625 surround 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 wall.
As shown in Figure 9: the second regenerative heat exchanger 604 comprises the second thermal 606, second heat storage 603, second air enters arm 607 and the second combustion exhaust exhaust outlet 608, second thermal 606 is arranged in body of heater 91 exterior wall, second heat storage 603 arranges in the second thermal 606, second thermal 606 one end is led to bottom the second combustion chamber 601, the other end is connected to the second air respectively and enters arm 607 and the second combustion exhaust exhaust outlet 608, enter between arm 607 and the second thermal 606 at the second air and be provided with the second one-way air valve 609, second one-way air valve 609 allows air to enter pipe 607 from the second air and the second thermal 606 flows into the second combustion chamber 601, the second unidirectional waste gas valve 600 is provided with between the second combustion exhaust exhaust outlet 608 and the second thermal 606, second unidirectional waste gas valve 600 allows gas-fired waste gas to flow through the second thermal 606 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 and are in connection, 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 with the second combustion exhaust and also cuts off mutually, the effect of replacement second one-way air valve 609 and the second unidirectional waste gas valve 600 can be played).
As shown in Fig. 1, Fig. 8, between 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, first combustion chamber 621 and second combustion chamber 601 of next-door neighbour are connected to form and are associated one group by combustion chamber through hole 6251, this example China and foreign countries gas-operated thermal bath facility 64 is provided with quirk partition wall 625 outside 18 roads altogether, forms 9 groups of association burning groups; In addition, as shown in Figure 1; Because vaporizer 61 is highly higher, wherein outer gas-operated thermal bath facility 64 is mainly divided into the heating of upper, middle and lower segment formula, and every section identical and associate the first combustion heater 62, second combustion heater 60 and form by 9 groups of structures.
As shown in Figure 1: on body of heater 91 exterior wall, 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 the gas-fired situation that technician directly observes each combustion chamber, chamber temperature table 6203 is provided with for the temperature monitoring to combustion chamber, so that the assessment to gasification process in chamber temperature monitoring holes 6201.
As Figure 13 shows: chamber temperature table 6203 and industry control center 90 are connected, 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, rotate reversing motor 663, air blower 664, gas fan 665, exhaust gas fan 666, lower wall 662 is connected to an air supervisor 667 respectively and the first air is in charge of 6671, second air is in charge of 6673, a coal gas supervisor 668 and the first gas manifold 6681, second gas manifold 6683, a combustion exhaust supervisor 669 and the second combustion exhaust are in charge of 6693, first combustion exhaust is in charge of 6691, wherein, 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 first the setting of gas manifold 6681 and the second gas manifold 6683 just exchange (Fig. 2, Fig. 4, shown in Fig. 6).
As Fig. 3, Fig. 4, Fig. 5, shown in Fig. 6: upper dish 661 is fitted in above lower wall 662, upper dish 661 respectively correspondence is provided with air pipe connecting 6672, gas connection pipes 6682, combustion exhaust pipe connecting 6692, rotate reversing motor 663 drive upper dish 661 on lower wall 662 reciprocating rotation thus realize air supervisor 667 be constantly in charge of with the first air 6671 and second air be in charge of 6673 and carry out connecting and cutting off conversion, coal gas supervisor 668 constantly carries out connecting and cutting off conversion with the first gas manifold 6681 and the second gas manifold 6683, combustion exhaust supervisor 669 be constantly in charge of with the second combustion exhaust 6693 and first combustion exhaust be in charge of and 6691 carry out connecting and cut off and change (with the first air be in charge of 6671 and second air be in charge of 6673 and first the switching of 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, first coal gas bustle pipe 6684, first combustion exhaust bustle pipe 6694; Second air bustle pipe 6675, second coal gas bustle pipe 6685, second combustion exhaust bustle pipe 6695.
As shown in Fig. 1, Fig. 6, first air bustle pipe 6,674 first air is in charge of 6671 and first air enter arm 627 and couple together, the first air is in charge of the 6671, first air bustle pipe 6674, first air and enters arm 627, first thermal 626 and the first combustion chamber 621 forms same path;
Meanwhile, the first gas manifold 6681 and the first coal gas are entered arm 622 and couple together by the first coal gas bustle pipe 6684, the first gas manifold 6681, first coal gas bustle pipe 6684, first coal gas are entered arm 622 and the first combustion chamber 621 forms same path;
Simultaneously now, first combustion exhaust bustle pipe 6694 be the first combustion exhaust is in charge of 6691 and first combustion exhaust exhaust outlet 628 couple together, the first combustion exhaust is in charge of the 6691, first combustion exhaust bustle pipe 6694, first combustion exhaust exhaust outlet 628, first thermal 626 and forms same path with combustion chamber 621.
In like manner; second air bustle pipe 6,675 second air is in charge of 6673 and second air enter arm 607 and couple together, the second air is in charge of the 6673, second air bustle pipe 6675, second air and enters arm 607, second thermal 606 and the second combustion chamber 601 forms same path;
Meanwhile, the second gas manifold 6683 and the second coal gas are entered arm 602 and couple together by the second coal gas bustle pipe 6685, the second gas manifold 6683, second coal gas bustle pipe 6685, second coal gas are entered arm 602 and the second combustion chamber 601 forms same path;
Meanwhile, second combustion exhaust bustle pipe 6,695 second burning gas is in charge of 6693 and second combustion exhaust exhaust outlet 608 couple together, the second combustion exhaust is in charge of the 6693, second combustion exhaust bustle pipe 6695, second combustion exhaust exhaust outlet 608, second thermal 606 and the second combustion chamber 601 forms same path.
In addition, as shown in figure 14, the tail gas pod 164 that exhaust gas fan 666 washes one's hair cleaner 16 by pipeline 6661 and tail gas water communicates; Shown in Figure 13; this example also comprises gas reversing system controller 906 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; rotate reversing motor 663, air blower 664, gas fan 665, exhaust gas fan 666 in this example also can directly control by industry control center 90, so arrange gas reversing system controller 906 herein do not form restriction to this routine protection domain.
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 starts and rotates reversing motor 663 and drive upper dish 661 to rotate on lower wall 662, and air supervisor 667 and the first air are in charge of 6671 connections, air be responsible for 667 and second air be in charge of 6673 and be 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 be responsible for 669 and second combustion exhaust be in charge of 6693 and be in the state of being connected;
(2) industry control center 90 starts air blower 664, gas fan 665, exhaust gas fan 666, air is blasted air supervisor 667 by air blower 664, air passes into air pipe connecting 6672, first air successively and is in charge of the 6671, first air bustle pipe 6674, first air and enters arm 627 and enter into the first thermal 626, enters in the first combustion chamber 621 after the heat utilizing the first heat storage 623 to discharge heats air, simultaneously, purified gas is blasted coal gas supervisor 668 by gas fan 665, coal gas enters gas connection pipes 6682 successively, first gas manifold 6681, first coal gas bustle pipe 6684, 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 with the first combustion exhaust and is in phase dissengaged positions, and corresponding combustion exhaust supervisor 669 and the second combustion exhaust are in charge of 6693 and are 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 top, again in the second thermal 606, carry out after absorbing and cooling temperature from the second combustion exhaust exhaust outlet 608 through the second heat storage 603 in the second thermal 606, second combustion exhaust bustle pipe 6695, second combustion exhaust is in charge of 6693, combustion exhaust pipe connecting 6692, combustion exhaust supervisor 669 is discharged by exhaust gas fan 666,
(3) reach setting 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 and are 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-state, 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 is blasted air supervisor 667 by air blower 664, air passes into air pipe connecting 6672, second air successively and be in charge of the 6673, second air bustle pipe 6675, second air and enter arm 607 and enter into the second thermal 606, enters in the second combustion chamber 601 after the heat utilizing the second heat storage 603 in the second thermal 606 to discharge heats air, simultaneously, purified gas is blasted coal gas supervisor 668 by gas fan 665, coal gas enters gas connection pipes 6682 successively, second gas manifold 6683, second coal gas bustle pipe 6685, 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 and are 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 top, again through the first thermal 626, after the first heat storage 603 in the first thermal 626 carries out absorbing and cooling temperature, last from the first combustion exhaust exhaust outlet 628, first combustion exhaust bustle pipe 6694, first combustion exhaust is in charge of 6691, combustion exhaust supervisor 669 is discharged by exhaust gas fan 666, so outer gas-operated thermal bath facility 64 combustion principle is when the waste gas generated after gas-fired in the first combustion chamber 621 enters the second combustion chamber 601 from combustion chamber through hole 6251, discharge after the cooling of its exhaust-heat absorption through the second heat storage 603 in the second combustion chamber 601 and the second thermal 606, otherwise, when the waste gas generated after gas-fired in the second combustion chamber 601 enters the first combustion chamber 621 from combustion chamber through hole 6251, discharge after the cooling of its exhaust-heat absorption through the first heat storage 603 in the first combustion chamber 621 and the first thermal 606.
Further: the waste gas after purified gas burning enters tail gas water by exhaust gas fan 666 and washes one's hair in cleaner 16 and carry out clean discharging after water washes one's hair purification.
In sum, this gas two by gas reversing system enters the mode of operation of the regenerative heat exchange of a mode of operation out and regenerative heat exchanger, realize the combustion heater alternate combustion of two groups of associations, namely gas reversing system sends into air, purified gas burning to the combustion chamber of the first combustion heater, hot waste gas simultaneously from the combustion chamber of the second combustion heater after sucking-off burning, 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 sends into air, purified gas burning to the combustion chamber of the second combustion heater, hot waste gas simultaneously from the combustion chamber of the first combustion heater after sucking-off burning, 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 mutually utilize gas-fired after waste gas residual heat carry out adding the method for warm air, both served the waste gas residual heat after to gas-fired to make full use of, improve the efficiency of combustion of the coal gas in combustion chamber, the cooling carrying out to a certain degree to the waste gas after gas-fired again, the external energy need not be consumed, play energy-saving and cost-reducing object, save smokeless char gasification cost, waste gas after gas-fired can totally discharge again, carves and current environmental requirement.
Automatically controlled by the heating of external gas-operated thermal bath facility 64, reduce human cost, improve the control accuracy to gasification, realize automatization.
As Fig. 1, Figure 10, shown in Figure 11, interior gas-operated thermal bath facility 67 is primarily of identical the 3rd combustion heater 68 of some groups of (this example 6 groups) structures and the 4th combustion heater 69, because the highly higher interior gas-operated thermal bath facility 67 of vaporizer 61 is mainly divided into, lower two-section type heating, every section of association having 6 groups of structures identical associates the 3rd combustion heater 68, 4th combustion heater 69, its composition structure and combustion principle associate the first burning heater 62 with above introduction, the principle of the second burning heater 60 is almost identical, 3rd combustion heater 68 also comprises the 3rd combustion chamber 681, 3rd coal gas enters arm 682, 3rd thermal 686, 3rd heat storage 683, 3rd air enters arm 687 and the 3rd combustion exhaust exhaust outlet 688.
As shown in Fig. 1, Fig. 9, Figure 11, the 3rd combustion chamber 681 is gas-fired quirks that in the vaporizer that is built into by fire-resistant thermally conductive material, ringwall 612 and internal-quirk partition wall 635 surround a relative closure.
As shown in Figure 1, Figure 10 shows, 3rd coal gas of hypomere enters arm 682 and upwards leads to the 3rd combustion chamber 681 from article passing beneath of bow 651 for central supported bow 65,3rd thermal 686 is arranged on the body of heater 91 below article bow 651,3rd heat storage 683 is placed in the 3rd thermal 686,3rd thermal 686 one end is led to bottom the 3rd combustion chamber 681 by extending passage 6861 from the upwards extension that passes beneath of article bow 651 of central supported bow 65, and the 3rd thermal 686 the other end is connected to the 3rd air respectively and enters arm 687 and the 3rd combustion exhaust exhaust outlet 688.
As Fig. 1, Fig. 9, shown in Figure 10, 3rd coal gas of epimere enters arm 682 and upwards leads to the 3rd combustion chamber 681 through quirk partition wall 635 from article passing beneath of bow 651 for central supported bow 65, 3rd thermal 686 is arranged on the body of heater 91 below article bow 651, 3rd heat storage 683 is placed in the 3rd thermal 686, 3rd thermal 686 one end is upwards led to bottom the 3rd combustion chamber 681 through quirk partition wall 635 extension by extending passage 6861 from the passing beneath of article bow 651 of central supported bow 65, 3rd thermal 686 the other end is connected to the 3rd air respectively and enters arm 687 and the 3rd combustion exhaust exhaust outlet 688.
In like manner, as shown in Fig. 9, Figure 10, Figure 11,4th combustion heater 69 structure is complete identical with the 3rd combustion heater 68, repeats no more here, and wherein the 4th combustion chamber 691 and the 3rd combustion chamber 681 are connected formation one group by chamber passage 6305 and associated (shown in Fig. 1, Fig. 8).
Wherein, as shown in Fig. 1, Fig. 6, Figure 10,3rd coal gas of the 3rd combustion chamber 681 of the 3rd burning heater 68 enters arm 682, the 3rd air enters arm 687 and the 3rd combustion exhaust exhaust outlet 688 is in charge of the 6671, first combustion exhaust respectively by the first coal gas bustle pipe 6684, first air bustle pipe 6674, first combustion exhaust bustle pipe 6694 and the first gas manifold 6681, first air and is in charge of 6691 and communicates.
As shown in Fig. 6, Figure 10, the 4th coal gas of the 4th combustion chamber 691 of the 4th burning heater 69 enters arm 692, the 4th air enters arm 697 and the 4th combustion exhaust exhaust outlet 698 is in charge of the 6673, second combustion exhaust respectively by the second coal gas bustle pipe 6685, second air bustle pipe 6675, second combustion exhaust bustle pipe 6695 and the second gas manifold 6683, second air and is in charge of 6693 and communicates.
Here, the 3rd burning heater 68, the 4th combustion heater 69 combustion principle are almost identical with above first burning heater 62, second burning heater 60, repeat no more.
As shown in Figure 1, Figure 10 shows, central supported bow 65, because the quirk partition wall 635 of ringwall 612 and combustion heating unit 67 is all arranged in furnace chamber in vaporizer, needs central supported to bend 65 and provide support for it, provide the laying of various pipeline to again combustion heating unit 67 simultaneously.
As shown in Figure 1, Figure 10 shows, central supported bow 65 is arranged in the furnace chamber below vaporizer 61, combustion heating unit 67, 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 around ringwall 652 center, Huo Gong center at a certain angle spaced radiation shape to scatter layout, fire bow 651 in this example is 12 bows, and quantity is consistent with the 3rd burning heater 68 the 4th burning heater 69 sum that is mutually related of combustion heating unit 67.
As shown in Fig. 1, Figure 10, Fig. 9, Figure 11, article one, fiery bow in the body of wall of 651 arranges the extension passage 6861 that the 3rd coal gas enters arm 682 and the 3rd thermal 686, tightly adjacent another bar fire bends the extension passage 6961 that the 4th coal gas arranged in the body of wall of 651 enters arm 692 and the 4th thermal 696, provide convenience to the pipeline laying of combustion heating unit 67, make the various conduit arrangements of combustion heating unit 67 orderly, be unlikely to interfere.
In sum, the type of heating of gasification installation 6 is by outer gas-operated thermal bath facility 64, interior gas-operated thermal bath facility 67 adopts duplex combustion chamber and commutation heating, on outer gas-operated thermal bath facility 64 points, in, lower three sections of heating, on interior gas-operated thermal bath facility 67 points, lower two sections of heating, thermal source is provided in vaporizer 61, in addition, the water-gas gasification reaction of this gasification installation 6 carries out in vaporizer 61 indoor separately, and heating is carried out in vaporizer 61 outdoor separately, therefore be referred to as external-heat, be different from existing intermittent fuel layer and regenerator is carried out in same indoor, water-gas reaction and water-gas gasification reaction are heated respectively can be continuous, controlledly to carry out, mutual coordination and non-interference.
Second section water-gas reaction
Because smokeless char temperature in vaporizer is higher, generally all more than 1000 °, then pass into water vapor to smokeless char, the charcoal in high temperature smokeless char and superheated vapour meet and carry out water-gas reaction and generate the hot water-gas of high temperature (carbon monoxide and hydrogen).
As shown in Fig. 1, Figure 12, external-heat water-gas gasification installation 7 comprises gasification installation 6, material cooling chamber 70, steam enter siphunculus 707, hot gas heating-type vapor generating unit (figure is not depending on going out).
As shown in Figure 1, the vaporizer 61 of gasification installation 6 is positioned at above central supported bow 65, outer gas-operated thermal bath facility 64, interior gas-operated thermal bath facility 67 are required thermals source of vaporizer 61, certainly, if use other external heating device to vaporizer 61, inner heating device be also feasible, as long as can ensure, to the heat needed for vaporizer 61 and temperature, to be not limited to the type of heating of above-mentioned outer gas-operated thermal bath facility 64, interior gas-operated thermal bath facility 67.
As shown in Figure 1, material cooling chamber 70 is arranged on body of heater 91 bottom and is positioned at below central supported bow 65, and the top of material cooling chamber 70 communicates with bottom vaporizer 61; Steam enters the top of siphunculus 707 one end material cooling chamber 70, steam enters the opening 708 downwardly material cooling chamber 70 of siphunculus 707, and steam enters siphunculus 707 the other end and stretches out communicating of outer sweating room (the scheming depending on not going out) with hot gas heating-type vapor generating unit of body of heater 91.
Task due to external-heat water-gas gasification installation 7 produces a large amount of water-gas, so need when smokeless char carries out water-gas reaction in vaporizer 61 to consume a large amount of water vapors, need the steam generation device that can produce a large amount of water vapors, and the water-gas temperature that in this example, smokeless char and steam reaction generate is very high, usually more than 500 °, hot gas heating-type vapor generating unit also can be referred to as hot gas heating-type vapor boiler, primary structure is that hot gas interchanger forms separately an independently gas passage, container or the water tank of dress water form sweating room, hot gas interchanger is placed in container or the water tank of dress water, the gas passage of hot gas interchanger is connected with water-gas bustle pipe 85, sweating room and water vapor import steam and enter siphunculus 707 and be connected, utilize hot gas interchanger that the heat of water-gas hot for high temperature is passed to the water in container or water tank, thus thermosetting water vapor is added to the water in container or water tank, again water vapor is imported steam and enter siphunculus 707, both the cooling to water-gas had been played, simultaneously a large amount of needed for the seasonable institute of make up water coal gas again water vapors, do not need to consume the extra energy, water-gas cost is saved further.
Water-gas reaction Principle Method of the present utility model is:
(1), steam enters siphunculus 707 and passes into water vapor to material cooling chamber 70, water vapor blows to material cooling chamber 70, to the high-temp solid product cooling after water-gas a large amount of in material cooling chamber 70 gasification, while the solid of water vapor after giving gasification carries out lowering the temperature, improve steam temperature and form superheated vapour;
(2), superheated vapour enters vaporizer 61 through central supported bow 65, and contact with the high temperature smokeless char material of vaporizer 61, the charcoal in smokeless char and superheated vapour meet and carry out water-gas reaction and generate the hot water-gas of high temperature (carbon monoxide and hydrogen);
(3), water-gas hot for high temperature is passed into hot gas heating-type vapor generating unit heating water and form water vapor, again the water vapor that hot gas heating-type vapor generating unit produces is passed into steam and enter siphunculus 707, supplement a large amount of water vapors required because of water-gas reaction, water-gas reaction can uninterruptedly be carried out continuously;
(4), above-mentioned 2nd step, vaporizer 61 be heated by outer gas-operated thermal bath facility 64, interior gas-operated thermal bath facility 67 adopts duplex combustion chamber and commutation accumulation of heat heating means, the 64 points of upper, middle and lower segment heating of outer gas-operated thermal bath facility, the upper and lower two sections of heating of interior gas-operated thermal bath facility 67 points, to water-gas reaction institute heat requirement.
The utility model utilizes charcoal in high temperature smokeless char and superheated vapour to meet to carry out water-gas reaction and generates the hot water-gas product of high temperature, water-gas output is large, in water-gas, hydrogen content is high, carbon monoxide and hydrogen reasonable ratio, other component content is low, it is desirable synthetic gas product, other industry can be used for as reducing gas, reducing gas as used in the reducing and smelting as direct-reduced iron, also the excellent pure hydrogen product of inexpensive product can be obtained as the reducing and smelting of direct-reduced iron reducing gas used by pressure-variable adsorption or membrane separation process, secondly, the solid product that temperature after utilizing smokeless char to gasify is higher directly contacts generation superheated vapour with water vapor, reach the temperature required of water-gas reaction, promote that water-gas reaction fills part more, both while reduction solid product temperature, produce superheated vapour again, finally, water-gas hot for high temperature after water-gas reaction is derived, for adding thermogenesis water vapor to water, a large amount of water vapor is endlessly provided to water-gas reaction, thisly do not need to consume that the technological method of additional energy source meets that we advocate today is energy-saving and cost-reducing, the theory of Sustainable development.
3rd water saving coal gas take-up gear
Charcoal in high temperature smokeless char and superheated vapour carry out water-gas reaction and generate water-gas (carbon monoxide and hydrogen), above general designation water-gas, and needing derives to utilize water-gas.
As shown in Fig. 1, Fig. 7, Fig. 8, Fig. 9, Figure 11, water-gas take-up gear 8, comprises water-gas concentration chamber 81, outer derivation passage 83, derives main channel 84, water-gas bustle pipe 85; Water-gas concentration chamber 81 be arranged on the top of vaporizer 61 and vaporizer 61 integrally formed; As shown in Fig. 1, Fig. 8, Figure 15, article 18, 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 vaporizer 61 through in the middle part of outer ring wall 611, and outer derivation channel outlet 832 leads to the water-gas concentration chamber 81 at vaporizer top through outer ring wall 611.
As shown in Figure 1, Figure 7 shows, derive main channel 84 and be arranged in the exterior wall of body of heater 91 of vapourizing furnace, derivation main channel 84 communicates with water-gas concentration chamber 81 to extend up to arrange outside body of heater 91 again and communicates with top water coal gas bustle pipe 85.
As Fig. 1, Fig. 7, Fig. 8, shown in Fig. 9, because vaporizer 61 annular chamber in this example, so water-gas concentration chamber 81 also corresponding annular chamber, article 18, outer derivation passage 83 is separately positioned in the middle of body of heater 91 exterior wall and leads to vaporizer 61 through with outer quirk partition wall 625 and outer ring wall 611, wherein, because the circumference of vaporizer 61 is longer, so in vaporizer 61 ringwall 612, outer ring wall 611 is respectively arranged with 18 lower outside derivation feeder connections 831, upper outside derivation feeder connection 834, as shown in Figure 1, this example adopts this structure can better can derive the water-gas that section different in vaporizer 61 produces, also be provided with 8 larger water-gas main channels 84 of sectional area around water-gas concentration chamber 81 in addition and lead to water-gas bustle pipe 85, the object of such setting conveniently can derive a large amount of water-gas in water-gas concentration chamber 81.
The water-gas that section different in vaporizer 61 produces enters outer derivation passage 83 collect in water-gas concentration chamber 81 again from lower outside derivation feeder connection 831, upper outside derivation feeder connection 834 by this routine feature respectively, a large amount of water-gas in certain vaporizer 61 directly rise up in water-gas concentration chamber 81, enter water-gas bustle pipe 85 by derivation main channel 84 to discharge.
Section four, continuous external heating type gasification
Comprehensively above-mentioned, this routine feature be smokeless char preheating, smokeless gasification (water-gas reaction), steam are produced, water-gas derive process integration together in, such that smokeless char gasifies (water-gas reaction), steam produces, water-gas is able to continuous realization.
As shown in figure 14, continuous external heating type water-gas vapourizing furnace 9 comprise body of heater 91, pre-heating cabin 1, enter stove cloth passage 921, external-heat water-gas gasification installation 7, water-gas take-up gear 8, helix closed removal device 96, product feed bin 94; The concrete structure of pre-heating cabin 1, external-heat water-gas gasification installation 7, water-gas take-up gear 8 is shown in the above; Pre-heating cabin 1 is arranged on body of heater 91 top, the high temperature hot gas admission passage 131 of pre-heating cabin 1 communicates with water-gas bustle pipe 85, body of heater 91 top is provided with into stove cloth passage 921, enter stove cloth passage 921 upper end to be connected with the charging valve 15 bottom pre-heating cabin 1, enter stove cloth passage 921 lower end and communicate with vaporizer 61 top of gasification installation 6 ,the charging valve of gas sealing function mainly taked by above-mentioned charging valve 15, mainly prevent water-gas from passing through to spill into stove cloth passage 921, ensure that a large amount of water-gas is derived from the derivation main channel 84 of water-gas take-up gear 8, when certainly opening reinforced when charging valve 15, because the particle of smokeless char own is tiny, dense packing together, and water-gas is also difficult to spill through the smokeless char entered in stove cloth passage 921 or can only spill by trace.
As shown in figure 14, helix closed removal device 96 is arranged on bottom the material cooling chamber 70 of external-heat water-gas gasification installation 7, product feed bin 94 is placed in bottom body of heater 91, product feed bin 94 connects helix closed removal device 96, helix closed removal device 96 belongs to prior art, as long as the grit that can play the solid product after avoiding smokeless char to gasify flies upward, as the sealing discharging device on market, sealing material returning device, sealing blanking device etc.
The method of this routine continuous external heating type gasification is:
(1), by bucket elevator 18, low-rank coal (brown coal) pyrolysis process is obtained smokeless, anhydrous, low ash, highly active smokeless char delivers to closed infeed belt conveyor 17, close infeed belt conveyor 17 by smokeless char preheating from pre-heating cabin 1, then pass through stove cloth passage 921 and enter in the vaporizer 61 of gasification installation 6;
(2), by the outer gas-operated thermal bath facility 64 of the gasification installation 6 of external-heat water-gas gasification installation 7, interior gas-operated thermal bath facility 67 provide thermal source to gas-fired after purification to vaporizer 61, smokeless char gasifies under hot environment in vaporizer 61;
(3), high-temperature water vapor is passed into by external-heat water-gas gasification installation 7 from vaporizer 61 bottom, and the smokeless char gasification materiel hot with the high temperature of vaporizer 61 contacts, the charcoal in the solid product after smokeless char gasification and superheated vapour meet and carry out water-gas reaction and generate water-gas;
(4), solid product after smokeless char gasification falls into material cooling chamber 70 from vaporizer 61, overheated high-temperature water vapor is heated as again to the water vapor upwards entering vaporizer 61 through material cooling chamber 70, again the solid product after smokeless char gasification is lowered the temperature simultaneously, according to smokeless char gasification degree, the helix closed removal device 96 of reed time controll is opened or is closed, solid product after smokeless char high-temperature gasification cooling in material cooling chamber 70 is entered in product feed bin, open during reed time controll charging valve 15 again or close, what the smokeless char after preheating passed through that stove cloth passage 921 enters gasification installation 6 adds in vaporizer 61,
(5), water-gas reaction generates water-gas (carbon monoxide and hydrogen), be referred to as water-gas, water-gas is derived by the derivation main channel 84 of the water-gas take-up gear 8 that body of heater is arranged, pre-heating cabin 1 pair of smokeless char preheating is entered by water-gas bustle pipe 85 and high temperature hot gas admission passage 131, the i.e. preheating of above-mentioned 1st step, the low temperature water gas after preheating is discharged by the cryogenic gas exhaust channel 138 of pre-heating cabin 1.
Further, water-gas is derived by the derivation main channel 84 of the water-gas take-up gear 8 that body of heater is arranged, import hot gas heating-type vapor generating unit heating water by water-gas bustle pipe 85 and form water vapor, again the water vapor that hot gas heating-type vapor generating unit produces is entered siphunculus 707 by steam and pass into external-heat water-gas gasification installation 7, supplement a large amount of water vapors required because of water-gas reaction, water-gas reaction can uninterruptedly be carried out continuously.
Smokeless char preheating, gasifying process are incorporated into same body of heater by this example, and realize the gasification of continuous smokeless char, production efficiency is high, and needed for equipment, factory building face is little, and human cost is low, has the feature of low consumption, environmental protection.
Part IV, continuously water-gas gasification comprehensive
First segment continuous external heating type water-gas gasification comprehensive device
As shown in figure 14, comprehensively above-mentioned, draw continuous external heating type water-gas gasification comprehensive device, comprise continuous external heating type water-gas vapourizing furnace 9, tail gas water washes one's hair cleaner 16, the tail gas pod 164 that the exhaust gas fan 666 of the gas reversing system 66 of the gasification installation 6 of continuous external heating type water-gas vapourizing furnace 9 washes one's hair cleaner 16 by pipeline 6661 and tail gas water communicates.
So draw, continuous external heating type water-gas gasification comprehensive method is: supplement further in the 2nd step of method of above-mentioned continuous external heating type gasification and be, above-mentioned outer gas-operated thermal bath facility 64, interior gas-operated thermal bath facility 67 adopt duplex combustion chamber and commutation heating, in vaporizer 61, provide thermal source, the waste gas in outer gas-operated thermal bath facility 64, interior gas-operated thermal bath facility 67 after purified gas burning enters tail gas water by exhaust gas fan 666 and washes one's hair in cleaner 16 and carry out clean discharging after water washes one's hair purification.
Be further refined as: the 64 points of upper, middle and lower segment heating of outer gas-operated thermal bath facility, the upper and lower two sections of heating of interior gas-operated thermal bath facility 67 points, provide thermal source in vaporizer 61.
The control of second section continuous external heating type water-gas gasification comprehensive technique
As shown in figure 13: the control device of continuous external heating type water-gas gasification comprehensive device, being connected by bucket elevator 18, infeed belt conveyor 17 of industry control center 90 and the pre-hot feed of smokeless char is comprised; The charging valve 15 gasified with smokeless char, helix closed removal device 96, chamber temperature table 6203, rotate reversing motor 663, air blower 664, gas fan 665, exhaust gas fan 666, spray water pump 167 and be connected, automatically controlled their work by industry control center 90.
The control method of continuous external heating type water-gas gasification comprehensive device is:
(1), industry control center 90 controls the smokeless char pellet that adds in the feed bin 111 of pre-heating cabin 1 by bucket elevator 18, infeed belt conveyor 17, controls charging valve 15 and opens and closes the smokeless char after by preheating in blanking bin 14 and pass through stove cloth passage 921 and enter in the vaporizer 61 of gasification installation 6;
(2), industry control center 90 is carried out comprehensive assessment smokeless char gasification situation according to the temperature that chamber temperature table 6203 records and is controlled to rotate the rotational frequency of reversing motor 663 and air blower 664, gas fan 665, the external gas-operated thermal bath facility of air force 64 of exhaust gas fan 666, the gas-fired of interior gas-operated thermal bath facility 67 control, thus adjusts the reaction of smokeless char water-gasization;
(3), the water that the waste gas after burning in outer gas-operated thermal bath facility 64, interior gas-operated thermal bath facility 67 pumps into tail gas to be washed one's hair in cleaner 16 by exhaust gas fan 666 and is purified by industry control center 90;
(4), the pump water yield of industry control center 90 adjustment sprinkling water pump 167 realizes the purification that the waste gas after to burning pumps into tail gas.
Above content introduction just exemplifies a tool embodiment of continuous water-gas gasification comprehensive device and technique, does not form the restriction to this case continuous water-gas gasification comprehensive device and technique protection domain.

Claims (3)

1. external-heat water-gas gasification process, is characterized in that: the method relates to that equipment comprises gasification installation, material cooling chamber, steam enter siphunculus, hot gas heating-type vapor generating unit, and step is:
(1), steam enters siphunculus and passes into water vapor to material cooling chamber, water vapor blows to material cooling chamber, to the high-temp solid product cooling after water-gas a large amount of in material cooling chamber gasification, while the solid of water vapor after giving gasification carries out lowering the temperature, improve steam temperature and form superheated vapour;
(2), superheated vapour enters the vaporizer of gasification installation, and contacts with the high temperature smokeless char material of vaporizer, and the charcoal in smokeless char and superheated vapour meet and carry out water-gas reaction and generate the hot water-gas of high temperature;
(3), water-gas hot for high temperature is passed into hot gas heating-type vapor generating unit heating water and form water vapor, again the water vapor that hot gas heating-type vapor generating unit produces is passed into steam and enter siphunculus, supplement because of a large amount of water vapors needed for water-gas reaction, water-gas reaction can uninterruptedly be carried out continuously;
(4), above-mentioned (2) step, vaporizer provides institute's heat requirement by the heating means of outer gas-operated thermal bath facility duplex combustion chamber and the commutation heating means of accumulation of heat and interior gas-operated thermal bath facility duplex combustion chamber and commutation accumulation of heat to water-gas reaction.
2. external-heat water-gas gasification process as claimed in claim 1, it is characterized in that: the heating means of described outer gas-operated thermal bath facility duplex combustion chamber and commutation accumulation of heat, the method relates to equipment and comprises outer gas-operated thermal bath facility, gas reversing system, outer gas-operated thermal bath facility comprises the first combustion heater of at least one group of identical association of structure, second combustion heater, the first described combustion heater mainly comprises the first combustion chamber, first coal gas enters arm and the first regenerative heat exchanger, second combustion heater structure also comprises the second combustion chamber, second coal gas enters arm and the second regenerative heat exchanger, the step of the method is:
(1), air is blasted the first regenerative heat exchanger by gas reversing system, enter in the first combustion chamber after the first regenerative heat exchanger heating, purified gas blasts in the first combustion chamber and burns by gas reversing system, waste gas in first combustion chamber after purified gas burning enters into the second combustion chamber, then is discharged by gas reversing system after the second regenerative heat exchanger heat absorption;
(2), reach setting combustion time, air is blasted the second regenerative heat exchanger by gas reversing system, enter in the second combustion chamber enter heating after the second regenerative heat exchanger heating after, purified gas blasts in the second combustion chamber and burns by gas reversing system, waste gas in second combustion chamber after purified gas burning enters into the first combustion chamber, then is discharged by gas reversing system after the first regenerative heat exchanger heat absorption.
3. external-heat water-gas gasification process as claimed in claim 1, it is characterized in that: the heating means of described interior gas-operated thermal bath facility duplex combustion chamber and commutation accumulation of heat, the method relates to equipment and comprises interior gas-operated thermal bath facility, gas reversing system, interior gas-operated thermal bath facility comprises the 3rd combustion heater of at least one group of identical association of structure, 4th combustion heater, the 3rd described combustion heater mainly comprises the 3rd combustion chamber, 3rd coal gas enters arm and the 3rd regenerative heat exchanger, 4th combustion heater structure also comprises the 4th combustion chamber, 4th coal gas enters arm and the 4th regenerative heat exchanger, the step of the method is:
(1), air is blasted the 3rd regenerative heat exchanger by gas reversing system, enter in the 3rd combustion chamber after the 3rd regenerative heat exchanger heating, purified gas blasts in the 3rd combustion chamber and burns by gas reversing system, waste gas in 3rd combustion chamber after purified gas burning enters into the 4th combustion chamber, then is discharged by gas reversing system after the 4th regenerative heat exchanger heat absorption;
(2), reach setting combustion time, air is blasted the 4th regenerative heat exchanger by gas reversing system, enter in the 4th combustion chamber enter heating after the 4th regenerative heat exchanger heating after, purified gas blasts in the 4th combustion chamber and burns by gas reversing system, waste gas in 4th combustion chamber after purified gas burning enters into the 3rd combustion chamber, then is discharged by gas reversing system after the 3rd regenerative heat exchanger heat absorption.
CN201310346021.4A 2013-08-10 2013-08-10 External-heat water-gas gasification process Active CN103450943B (en)

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US5064444A (en) * 1986-10-16 1991-11-12 Bergwerksverband Gmbh Process for the allothermic gasification of coal
GB2350370A (en) * 1999-05-27 2000-11-29 Technip Benelux B V Process and device for autothermic gasification of solid fuels
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