CN201581059U - Clean gas output type environment-friendly coal-fired gasification furnace - Google Patents

Clean gas output type environment-friendly coal-fired gasification furnace Download PDF

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Publication number
CN201581059U
CN201581059U CN2009202538297U CN200920253829U CN201581059U CN 201581059 U CN201581059 U CN 201581059U CN 2009202538297 U CN2009202538297 U CN 2009202538297U CN 200920253829 U CN200920253829 U CN 200920253829U CN 201581059 U CN201581059 U CN 201581059U
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China
Prior art keywords
chamber
furnace
coal
fire grate
gasification furnace
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Expired - Lifetime
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CN2009202538297U
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Chinese (zh)
Inventor
庞子乾
王明湖
袁宫明
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KUNMING KANGLIXIN ELECTRONIC MACHINERY CO Ltd
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KUNMING KANGLIXIN ELECTRONIC MACHINERY CO Ltd
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Abstract

The utility model relates to an environment-friendly coal-fired gasification furnace capable of automatically removing coke and water content in output gas, belonging to the technical field of combustion devices. The gasification furnace comprises four portions including a gasification furnace, a heat exchanger, a steam-water separator and a combustion fan, five functional regions including a combustion chamber, a reduction chamber, a distillation chamber, a destructive distillation chamber and a cooling filter chamber are sequentially arranged on a fire grate of the furnace body, the heat exchanger is connected to the upper portion of the cooling filter chamber of the furnace body via a connecting pipe and a conversion valve, a gas outlet of the heat exchanger is connected with the steam-water separator, an inlet of a heat exchange pipe array assembled in the heat exchanger is connected with the fan while an outlet thereof is connected to the upper portion of preheated jacket of the furnace body, the preheated jacket of the furnace body is provided with a series of gas inlets below the fire grate, and a chimney with a bypass valve is arranged on the upper portion of the cooling filter chamber of the furnace body, and a coal filler is arranged on the top of the furnace body. Output gas of the gasification furnace is low in temperature, free of coke, low in water content, easy to be ignited and low in energy loss during delivery, combustion parts of the gasification furnace are not easy to be blocked, and workload of daily maintenance can be reduced.

Description

Clean fuel gas output type environment-friendly type coal-fired gasification furnace
Technical field
The utility model relate to a kind of can eliminate automatically output in the combustion gas tar and the environment-friendly type coal-fired gasification furnace of moisture content, belong to the combustion unit technical field.
Background technology
Four kinds of combustion systems of the general employing of atmospheric fixed bed vapourizing furnace are respectively updraft type, downdraft, side-suction type and hybrid.Wherein, fast owing to utilization ratio height, the gasification rate of updraft type gasification furnace coal, gasification efficiency is high, output combustion gas dust content is low, high obtain everybody consistent of calorific value favored and approved.Regrettably big, the equipment of the coal-tar middle oil content of updraft type vapourizing furnace output combustion gas and transport pipe easily stops up, the line service amount is bigger has seriously restricted the development and the widespread use of updraft type vapourizing furnace.
For many years, each enterprises and institutions and people are that to be devoted to improve the gasification rate of updraft type vapourizing furnace fast, the gasification efficiency height, especially how the tar of effectively eliminating in the output combustion gas has been made unremitting effort, for example, patent 02276230.2 has been announced a kind of vapourizing furnace tar moisture content tripping device, patent 02219573.4 has announced that a kind of fixed-bed gasification furnace of rectangle burner hearth structure is to strengthen gasification efficiency, patent 02224781.5 has announced that the annular steam pipe of a kind of increase carries out dedusting to the output combustion gas, patent 02213480.8 has been announced a kind of by thereby the fixed-bed gasification furnace that thermal insulation layer improves fuel availability is set in burner hearth, patent 02291928.7,90226299.8,200710066099.5 announced a kind of fixed-bed gasification furnace that adopts the water jacket furnace wall, patent 01230718.1,200720104873.2 announced a kind of fixed-bed gasification furnace of getting gas from reducing zone.
Practice shows, above-mentioned improved procedure makes the vapourizing furnace locality to improve, but owing to have cold filtration chamber and furnace height not unreasonable, thereby problem such as tar still thoroughly improved, and the tar problem of especially exporting in the combustion gas still is everybody first-class problem of puzzlement.
How to solve or eliminate the problem that the tar in the output combustion gas becomes the coal gasification technical development and extensively moves towards daily production, lives and must at first solve.
Summary of the invention
The utility model provides a kind of clean fuel gas output type environment-friendly type coal-fired gasification furnace, can make tar, moisture content in the output combustion gas carry out automatic filtration, separation, recycling, gas ignition is easy, power loss is less in the transmission course, can not result in blockage, can reduce the line service amount pipeline and combustion component.
The realization the technical solution of the utility model is: from setting gradually combustion chamber, reduction chamber, stilling chamber, five functional zone in destructive distillation chamber and cold filtration chamber more than the fire grate of body of heater; Interchanger connects the top, cold filtration chamber of body of heater by pipe connecting and transforming valve, and the interchanger gas outlet connects steam separator, the built-in array heat transfer tube inlet of the interchanger machine of giving a dinner for a visitor from afar, and outlet inserts the top of the pre-thermal jacket of body of heater; The pre-thermal jacket of body of heater is provided with a series of air inlet ports at fire grate with upper/lower positions, also is provided with the chimney of band by-pass valve on the top, cold filtration chamber of body of heater, and coal filling hole is located at furnace roof.
The technical solution of the utility model also comprises:
The scraper plate coal distributing device of band rocking handle is housed in the position, reduction chamber of body of heater, and fire grate also has rocking handle; The body of heater coal filling hole is provided with the annular seal-water tank with top cover edge coupling; The outlet of array heat transfer tube is connected to the position of the corresponding stilling chamber of pre-thermal jacket in the interchanger; Be provided with clean-out door near the furnace wall above the fire grate, the air inlet port of fire grate below is uniform distribution circlewise.
The structure of steam separator is the opening cylindrical shell that tips upside down in the aqua storage tank, is fixed with a series of staggered interceptors in the cylindrical shell; Be distributed with helical fin on the heat transfer tube in the interchanger.
The above spatial altitude of vapourizing furnace fire grate is more than or equal to 2.5 times of fire grate position diameter.
At first heat and the interchanger that utilizes combustion chamber, reduction chamber outer wall to produce to the combustion air of sending into vapourizing furnace carries out efficient preheating; ash storage room adopts annular, multiple spot air intake mode to send into the combustion chamber below fire grate then; cooling on the one hand, protection are in pyritous combustion chamber, reduction chamber for a long time; it is not damaged; also further improve simultaneously combustion chamber, reduction chambers temp and homogeneity, thereby improve burning of coal rate, vaporization rate and gasification rate.
The reduction chamber enters the cold filtration chamber after the inflammable gas that body of heater produces upwards passes through stilling chamber, destructive distillation chamber successively, because this chamber height is higher, a large amount of heats are absorbed by this coal seam, chamber and temperature progressively reduces in the combustion gas crossing process, along with continuous rising, the temperature of inflammable gas constantly reduces, wherein contained tar, moisture begin to become liquid state and are condensed in the coal cinder surface.Along with the coal seam in combustion chamber, the reduction chamber descends, the coal in the cold filtration chamber also progressively descends, and makes that the tar, the moisture content that are attached to the coal cinder surface are finally decomposed at zone of combustion, has realized the purpose to the tar self-separation.
Inflammable gas is after the output of cold filtration chamber, tar and most of moisture content have been filtered and have returned the combustion chamber and decomposed, recycles, contained small amount of moisture and inflammable gas are after sending into interchanger, because the high efficient heat exchanging that carries out between combustion air and the inflammable gas impels the inflammable gas temperature further to reduce, moisture content is separated.
After the inflammable gas of interchanger output enters steam separator, be separated into liquid moisture content and under the effect of interceptor, thoroughly separated back inflow aqua storage tank, finally realized the purpose of clean fuel gas output with inflammable gas.
The principle that realizes technique scheme is such:
1) coal burns in the combustion chamber:
C+O 2=CO 2+ heat (combustion chamber)
2) under the effect of the heat that produces in the combustion chamber, the coal seam of reduction chamber begins to take place reduction reaction and generates inflammable gas:
CO 2+ C+ heat=2CO 1(reduction chamber)
3) inflammable gas, the heat of the generation of reduction chamber upwards pass through stilling chamber, destructive distillation floor chamber successively, and the part heat is absorbed preheating by the coal seam on the one hand, produces a large amount of water vapour and tar simultaneously.
4) tar, water vapour, the heat in stilling chamber, the destructive distillation floor chamber continues to move upward and passes through coal seam in the cold filtration chamber, the inflammable gas temperature sharply reduces, tar, water vapour become liquid state and are attached to surface, coal seam, cold filtration chamber, realize eliminating the purpose of tar.
5) behind the inflammable gas process interchanger of cold filtration chamber output, combustion air is preheated, temperature sharply descends, thereby after entering steam separator, institute's water content thoroughly separates with inflammable gas under the effect of interceptor and flows into aqua storage tank, finally realizes the purpose of clean fuel gas output.
The beneficial effects of the utility model are: can make coal obtain high-efficiency gasification, tar, moisture content in the output combustion gas obtain automatic filtration, separation, recycling, compare with traditional vapourizing furnace, gas ignition is more easy, in the transmission course power loss less, can not result in blockage to pipeline and combustion component, simultaneously on traditional vapourizing furnace basis, can further realize energy-conservation more than 25%, the coal-tar middle oil content of output combustion gas reduces more than 95%, when the cleaningization operation was achieved, the line service amount can reduce more than 90%.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Each label is represented successively among the figure: chimney 1; By-pass valve 2; Coal filling hole 3; Annular seal-water tank 4; Cold filtration chamber 5; Urceolus 6; Inner core 7; Pre-thermal jacket 8; Destructive distillation chamber 9; Air input tube 10; Pipe connecting 11; Stilling chamber 12; Scraper plate coal distributing device 13; Coal distributing device rocking handle 14; Reduction chamber 15; Combustion chamber 16; Refractory brick 17; Clean-out door 18; Fire grate 19; Fire grate rocking handle 20; Air inlet port 21; Soot door 22; Ash storage room 23; Furnace bottom 24; Stove pin 25; Transforming valve 26; Pipe connecting 27; Interchanger 28; Heat transfer tube 29; Burner blower 30; Plenum chamber 31; Gas outlet 32; Combustion gas output tube 33; Steam separator 34; Interceptor 35; Aqua storage tank 36.
Embodiment
Referring to Fig. 1, this device is made up of vapourizing furnace, interchanger, steam separator, burner blower four parts.Vapourizing furnace is from the bottom up by stove pin 25, furnace bottom 24, soot door 22, clean-out door 18, inner core 7, urceolus 6, pre-thermal jacket 8, chimney 1, chimney by-pass valve 2, coal filling hole 3, annular seal-water tank 4 is formed, wherein, fire grate sets gradually combustion chamber 16 more than 19, reduction chamber 15, stilling chamber 12,5 five functional zone in destructive distillation chamber 9 and cold filtration chamber, pre-thermal jacket 8 uniform distribution annular shape air inlet port 21 in ash storage room 23, manual fire grate 19 has fire grate rocking handle 20, be lined with the arc refractory brick 17 contour in the combustion chamber 16 with it, at the position at reduction 15 middle parts, chamber dress scraper plate coal distributing device 13, scraper plate coal distributing device 13 has the coal distributing device rocking handle 14 that extends in outside the stove.Interchanger 28 is made up of transforming valve 26, pipe connecting 27, heat transfer tube 29, plenum chamber 31, and heat transfer tube 29 inlets connect burner blower 30, and outlet connects the position of the corresponding stilling chamber 12 of the pre-thermal jacket 8 of body of heater.Steam separator 34 is fixed with a series of staggered interceptors 35 for tipping upside down on the opening cylindrical shell in the aqua storage tank 36 in the cylindrical shell, fuel gas inlet connects interchanger 28 by pipe connecting 11.
The utility model working process is such:
Vapourizing furnace is connected in the ring flange mode by pipe connecting 27 with interchanger, burner blower 30 connects the plenum chamber 31 of interchanger 28, combustion air after preheating links to each other with the pre-thermal jacket 8 of vapourizing furnace by air input tube 10, and interchanger 28 is connected in the ring flange mode by pipe connecting 11 with steam separator 34.During work, close transforming valve 26, open chimney by-pass valve 2, open soot door 22 and clean-out door 18 and add auxiliary fluid ignition, add subsequently and start coal, start burner blower 30, combustion air at first enters 31 preheatings of interchanger plenum chamber, enter pre-thermal jacket 8 subsequently, combustion air continues operation downwards and enters ash storage room ash storage room 23 through the air inlet port 21 of annular spread after preheating, under the blast effect, combustion air passes through the combustion chamber 16 that enters vapourizing furnace behind the manual fire grate 19, close soot door 22 and clean-out door 18 successively after waiting to start coal combustion, open the coal filling hole 3 of furnace roof and begin coal to the coal filling hole height, after about 15 minutes, close the coal filling hole 3 of furnace roof and water filling sealing in annular seal-water tank 4, open transforming valve 26, close chimney by-pass valve 2, inflammable gas is from 33 outputs of combustion gas output tube, can normally use.
In the use, fall into ash storage room 23 and keep combustion air smooth and easy combustion-supporting for guaranteeing combustion chamber 16 collection ashes, can shake fire grate rocking handle 20 once in two hours at interval, this moment, manually fire grate 19 rotated thereupon, and the collection ash falls automatically.Built on stilts for preventing the coal seam, can shake coal distributing device rocking handle 14 once in three hours at interval, this moment scraper plate coal distributing device 13 begin to rotate and under its effect the coal seam begin downward landing.
After use finishing, at first close the use terminal, close transforming valve 26 then successively, open chimney by-pass valve 2, close burner blower 30 and enter the smouldering fire dormant state.

Claims (4)

1. a clean fuel gas output type environment-friendly type coal-fired gasification furnace is characterized in that: from setting gradually combustion chamber, reduction chamber, stilling chamber, five functional zone in destructive distillation chamber and cold filtration chamber more than the fire grate of body of heater; Interchanger connects the top, cold filtration chamber of body of heater by pipe connecting and transforming valve, and the interchanger gas outlet connects steam separator, the built-in array heat transfer tube inlet of the interchanger machine of giving a dinner for a visitor from afar, and outlet inserts the top of the pre-thermal jacket of body of heater; The pre-thermal jacket of body of heater is provided with a series of air inlet ports at fire grate with upper/lower positions, also is provided with the chimney of band by-pass valve on the top, cold filtration chamber of body of heater, and coal filling hole is located at furnace roof.
2. clean fuel gas output type environment-friendly type coal-fired gasification furnace according to claim 1 is characterized in that: the scraper plate coal distributing device of band rocking handle is housed in the position, reduction chamber of body of heater, and fire grate also has rocking handle; The body of heater coal filling hole is provided with the annular seal-water tank with top cover edge coupling; The outlet of array heat transfer tube is connected to the position of the corresponding stilling chamber of pre-thermal jacket in the interchanger; Be provided with clean-out door near the furnace wall above the fire grate, the air inlet port of fire grate below is uniform distribution circlewise.
3. clean fuel gas output type environment-friendly type coal-fired gasification furnace according to claim 1, it is characterized in that: the structure of steam separator is the opening cylindrical shell that tips upside down in the aqua storage tank, is fixed with a series of staggered interceptors in the cylindrical shell; Be distributed with helical fin on the heat transfer tube in the interchanger.
4. clean fuel gas output type environment-friendly type coal-fired gasification furnace according to claim 1, it is characterized in that: the above spatial altitude of vapourizing furnace fire grate is more than or equal to 2.5 times of fire grate position diameter.
CN2009202538297U 2009-12-04 2009-12-04 Clean gas output type environment-friendly coal-fired gasification furnace Expired - Lifetime CN201581059U (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2009202538297U CN201581059U (en) 2009-12-04 2009-12-04 Clean gas output type environment-friendly coal-fired gasification furnace

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104449852A (en) * 2014-12-04 2015-03-25 中国环境科学研究院 Closed updraught type fixed bed gasification furnace waste heat recycling device
CN104593089A (en) * 2014-12-18 2015-05-06 广东正鹏生物质能源科技有限公司 Self-heat supply type biomass oil gas co-production process
CN111892957A (en) * 2019-12-23 2020-11-06 王禹博 Biomass pyrolysis gasification device capable of automatically adjusting operation state

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104449852A (en) * 2014-12-04 2015-03-25 中国环境科学研究院 Closed updraught type fixed bed gasification furnace waste heat recycling device
CN104593089A (en) * 2014-12-18 2015-05-06 广东正鹏生物质能源科技有限公司 Self-heat supply type biomass oil gas co-production process
CN111892957A (en) * 2019-12-23 2020-11-06 王禹博 Biomass pyrolysis gasification device capable of automatically adjusting operation state

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