CN102504882A - Dry distillation-gasification garbage disposal furnace without exhaust emission and pollution - Google Patents
Dry distillation-gasification garbage disposal furnace without exhaust emission and pollution Download PDFInfo
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- CN102504882A CN102504882A CN2011102423806A CN201110242380A CN102504882A CN 102504882 A CN102504882 A CN 102504882A CN 2011102423806 A CN2011102423806 A CN 2011102423806A CN 201110242380 A CN201110242380 A CN 201110242380A CN 102504882 A CN102504882 A CN 102504882A
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Abstract
The invention relates to a dry distillation-gasification garbage disposal furnace without exhaust emission and pollution; the dry distillation-gasification garbage disposal furnace is composed of two low-temperature dry distillation garbage carbonization furnaces (II and III) and a double zone coal gas producer (I), wherein the two low-temperature dry distillation garbage carbonization furnaces (II and III) are provided with vertical garbage drying and preheating sections (3 and 17) so as to ensure garbage to be dried an preheated in enough time; water coal gas ventilating pipes (2, 18) and dry distillation gas ventilating pipes (27) with lots of gaps are distributed on the outer walls of the low-temperature dry distillation garbage carbonization furnaces (II and III) in a staggering manner, are converged at the furnace top and lead to a fuel gas outlet pipe (9); and the burning and reduction condition of the coal gas producer can be controlled by controlling the inlet amount of garbage and a gasifying agent.
Description
Technical field
The present invention relates to a kind ofly utilize two low-temperature pyrolysis carbide furnaces being in the rubbish destructive distillation under the anoxic condition; Decomposite inflammable gas (being referred to as " destructive distillation combustion gas ") and carbide residue; The below is with a producer gas generator; Make vaporized chemical with high-temperature water vapor and air, make the carbide burning produce high temperature, be in the CO that the carbide under the condition of high temperature produces burning
2And aqueous vapour reducing, generate water-gas (CO and H
2), pyritous water-gas for the rubbish destructive distillation provides heat, is collected the destructive distillation combustion gas of destructive distillation generation and destructive distillation-gasification garbage disposal furnace that water-gas utilizes in the process that rises, and technical field belongs to environmental protection and energy-saving and emission-reduction.
Background technology
The past refuse treatment has landfill, burning and comprehensive utilization.Garbage loading embeading land occupation, contaminate environment should not be promoted to become to know together; Incineration firing is ripe technically, helps incineration firing but need add ignition dope toward contact, and investment is big, and running cost is high, and the most fatal problem is that waste incineration unavoidably can produce Dioxins, receives coming down hard upon of the masses; Rubbish comprehensive utilization processing cost is high; Compost does not have market; Successful case is few; Also be difficult to promote, write instructions and transfer in 16 ministries and commissions " about the suggestion of further reinforcement garbage treatment work " the rubbish comprehensive utilization as supporting emphasis in State Council recently, and turn to support domestic refuse biological fuel gas to utilize the exploitation of Technology Equipment.The developing direction of garbage treatment is the biological fuel gas utilization from now on, and treatment technology is exactly the retorting technique of rubbish.
Past; We utilize pyrogenous method to handle domestic refuse; Comprise the high temperature carbonization incinerator (patent No. 200510085232.2) of being authorized invention patent certificate and the patent of invention in substantive examination just: the garbage carbonized stove of low-temperature pyrolysis (patent No. 200910223401.2); They have significant effect for the generation that suppresses dioxin, and for reducing investment, reducing running cost also has significant effect; But the inflammable gas that high temperature carbonization produces is not recovered, and aspect the utilization of resources, also slightly feels shortcoming; The low-temperature pyrolysis destructive distillation combustion gas of need burning provides rubbish pyrogenous heat, also will change carbide into combustion gas by producer gas generator, aspect treatment process, can also further simplify.For this reason, the present invention provides a kind of low-temperature pyrolysis charring furnace and producer gas generator to combine on the basis of low-temperature pyrolysis charring furnace and producer gas generator, directly becomes not having exhaust gas emission, not having rubbish destructive distillation-gasification process stove of polluting of combustion gas to rubbish.
The object of the present invention is to provide a kind of two low-temperature pyrolysis charring furnaces and producer gas generator of utilizing to constitute, directly convert rubbish into the non-exhaust emission of mixed gas, free of contamination high-level efficiency rubbish destructive distillation-gasification process stove.
Obviously, as raw material production water-gas, the carbide that the rubbish destructive distillation produces and the characteristic of coal have huge difference to general producer gas generator with coal; For example producer gas generator has certain requirement to the size of coal cinder; The carbide that the rubbish destructive distillation produces can not satisfy this requirement certainly, and carbide bed permeability in general producer gas generator is bad, and the resistance that coal gas rises increases; Must form " central black hole ", burn partially even the fault of putting out a fire; Secondly, the complicated component of rubbish is than coal " slagging scorification " more easily.After the rubbish temperature surpassed 200 ℃, the plastics in the rubbish etc. just melt, and harden together, and were not only airtight, even do not fall down, and influence the destructive distillation and the gasification of rubbish; The 3rd, contain a large amount of moisture in the rubbish, needing increases the oven dry of rubbish and the time of preheating, just must increase the overall height of stove for this reason; The 4th, the carbide that the rubbish destructive distillation produces does not have physical strength basically, bears the weight of top rubbish, and inevitable ventilation property is poorer, and burning zone just is difficult to blaze up or the like, all is the technical issues that need to address of the present invention
Summary of the invention
The present invention provides a kind of low-temperature pyrolysis charring furnace and producer gas generator to combine; Earlier rubbish destructive distillation in the garbage carbonized stove of low-temperature pyrolysis; Generate inflammable gas and carbide; In producer gas generator, make vaporized chemical with air and water vapour, the burning carbide obtains high temperature, the CO that at high temperature scorching hot carbide produces burning
2Reduction generates water-gas with high-temperature vapor; Pyritous water-gas provides heat for the rubbish destructive distillation in the process that rises; Collect destructive distillation combustion gas and the water-gas that destructive distillation produces and utilize, directly become not having exhaust gas emission, not having the rubbish destructive distillation-gasification process stove of pollution of combustion gas to rubbish.
The technical scheme that the present invention solves its technical problem is:
Utilize the low-temperature pyrolysis charring furnace of two symmetric arrangement to form the outlet of common carbide, connect a producer gas generator below, the carbide that producer gas generator burning low-temperature pyrolysis charring furnace produces produces high temperature, the CO that the carbide under the high temperature produces burning
2With the water vapor reduction, generate water-gas (CO and H
2); Utilize pyritous water-gas to heat to rubbish again, provide rubbish pyrogenous heat, destructive distillation combustion gas and the water-gas of collecting rubbish destructive distillation generation from the top combustion gas gathering system of stove utilize.For the big problem of water cut that adapts to rubbish, the low-temperature pyrolysis carbide furnace is provided with vertical rubbish drying and forewarm section, lets rubbish that sufficient oven dry and warm up time are arranged; Secondly; Be covered with the water-gas ventpipe in the furnace wall of low-temperature pyrolysis carbide furnace; From the through low-temperature pyrolysis carbide furnace top of the reducing zone of producer gas generator; The retort section that pyritous water-gas tilts at the low-temperature pyrolysis carbide furnace generates destructive distillation combustion gas and carbide residue to the rubbish destructive distillation, vertical drying and forewarm section rubbish dry, preheating; The destructive distillation combustion gas through be arranged in the middle of the water-gas ventpipe, the slit of the destructive distillation combustion gas ventpipe of slotted gets into destructive distillation combustion gas ventpipe, converges, collects utilization in stove top and water-gas; Simultaneously, because the weight that the retort section that tilts is not born drying and forewarm section rubbish, volume reduces after the rubbish destructive distillation, thus ventilative easily, can guarantee that dry distillation reactor carries out smoothly; The 3rd, the general easy slagging scorification of producer gas generator, slagging scorification more easily in treating refuse.Because the plastics in the rubbish just melt when being heated to more than 200 ℃, the rubbish formation duricrust that bonds, rubbish just is detained motionless, causes the accident.In order to overcome this problem, the top of handling stove is provided with the hydro-cylinder of binder, guarantees that rubbish falls; The 4th, in general producer gas generator, the height of zone of combustion, reducing zone has only about 200mm, and is uncontrollable, and in fact efficient is very low.In the present invention; What of the zone of combustion of producer gas generator and reducing zone carbide; Depend on what of garbage feeding; Can control: control gets into the feed rate of what and vaporized chemical of zone of combustion and reducing zone carbide, just can improve the height of burning zone and reduction section, burns and the efficient that gasifies will improve greatly.
The invention has the beneficial effects as follows:
1, do not produce dioxin
Because the generation of dioxin needs two conditions: the existence of chlorine is promptly arranged and oxidizing reaction is arranged.Do not have the mixed consumer waste of classification to contain a large amount of chlorine-bearing compounds, waste incineration is an oxidizing reaction, so unavoidably can produce dioxin.Rubbish is airtight in the low-temperature carbonization stove, be in anoxic condition; Pyritous water-gas heats rubbish through ventpipe; Decomposition reaction just takes place, and the organism in the rubbish decomposes, and generates alkanes destructive distillation combustion gas and carbide residues such as (CmHn); Because oxidizing reaction does not take place in destructive distillation, even there are chlorine-bearing compounds such as plastics can not produce dioxin in the rubbish yet; The carbide residue that destructive distillation stays then drops in the producer gas generator and burns, though be oxidizing reaction, because the burning carbide does not have the existence of chlorine just not produce dioxin yet.
1, utilizes pyritous water-gas to make the rubbish destructive distillation need not to provide heat, improve the level of resources utilization
The rubbish destructive distillation is thermo-negative reaction, needs heat supplied; On the other hand carbide need be heated to high temperature could be CO
2Generate water-gas with aqueous vapour reducing, the heat of positive good utilisation high-temperature water gas makes the rubbish destructive distillation, and this just need not to the rubbish destructive distillation provides heat, improves the waste resources utilising efficiency.
2, rubbish once changes clean combustion gas into, saves the subsequent disposal of carbide
Rubbish is handled through destructive distillation-vapourizing furnace; Organism destructive distillation in the rubbish generates inflammable gas, the carbide gasification generates water-gas, once just changes clean combustion gas into, has simplified the garbage treating process process; Compare with the low-temperature pyrolysis charring furnace, simplified the subsequent disposal of carbide.
3, do not have exhaust gas emission, do not constitute pollution environment
Waste incineration per ton will produce the waste gas of 4000-7000 cubic meter, constitutes the severe contamination of air and having a strong impact on of weather.Particularly the high temperature that produces of waste incineration generates NOx and SOx, to the pollution of environment and more serious to the threat of human health.The garbage disposal furnace of destructive distillation of the present invention-gasification only produces combustion gas, does not produce waste gas, does not have exhaust gas emission, does not just constitute the pollution to environment.
4, need not off gas treatment, need not flying dust and handle, save great amount of investment and working cost
Waste incineration unavoidably can produce dioxin ， dioxin and not only be free among the waste gas, also has a large amount of Dioxins to be attached among the flying dust; Therefore; Waste incineration needs the strict waste gas of handling, and more need collect flying dust and deal carefully with, and therefore increases a large amount of investments and working cost; The present invention does not produce waste gas, so need not off gas treatment, does not produce dioxin, need not flying dust and handles, and saves great amount of investment and working cost.
5, being widely used of clean gas can have multiple choices
The target of refuse treatment is innoxious, minimizing and resource utilization.The recycling of waste incineration can only do waste incineration and generating electricity, and waste incineration and generating electricity at first needs a large amount of investments, and it is more much more than the power station investment of building a same power generation capacity to build a garbage incinerating power plant; Secondly, the inefficiency of waste incineration and generating electricity has great amount of heat to run away with waste gas; The efficient of waste heat boiler and steam turbine is low; The 3rd, day treatment scale is at the small-scale garbage incinerating power plant below 200 tons, and economic benefit is low, is difficult to recoup the investment, and is not suitable for building garbage incinerating power plant and has become common recognition; The 4th, garbage incinerating power plant is produced unstable, the online difficulty.The present invention converts rubbish into clean gas, and it is high to be used for fuel gas generation efficient, directly supplies domestic gas or provides Industrial Boiler to use less investment, and being used for baking bricks to obtain other income, is widely used.Description of drawings
Fig. 1 is the structural representation of destructive distillation of the present invention-gasification garbage disposal furnace;
Fig. 2 is the structural representation of temperature garbage destructive distillation carbide furnace outer wall water-gas ventpipe and destructive distillation combustion gas ventpipe;
Among the figure: I---producer gas generator, II---left low-temperature pyrolysis carbide furnace, III---right low-temperature pyrolysis carbide furnace; 1---the retort section of left low-temperature pyrolysis carbide furnace, 2---left water-gas ventpipe, 3---the drying and forewarm section of left low-temperature pyrolysis carbide furnace; 4---the roof pressure piece of left low-temperature pyrolysis carbide furnace, 5---the pusher hydro-cylinder of left low-temperature pyrolysis carbide furnace, 6---the garbage inlet of left low-temperature pyrolysis carbide furnace; 7---the rubbish surge chamber of left low-temperature pyrolysis carbide furnace, 8---the inside feeding gate of left low-temperature pyrolysis carbide furnace, 9---the binder hydro-cylinder of left low-temperature pyrolysis carbide furnace; 10---gas outlet, 11---the binder hydro-cylinder of right low-temperature pyrolysis carbide furnace, 12---the inside feeding gate of right low-temperature pyrolysis carbide furnace; 13---the rubbish surge chamber of right low-temperature pyrolysis carbide furnace, 14---the garbage inlet of right low-temperature pyrolysis carbide furnace, 15---the pusher hydro-cylinder of right low-temperature pyrolysis carbide furnace; 16---the roof pressure piece of right low-temperature pyrolysis carbide furnace, 17---the drying and forewarm section of right low-temperature pyrolysis carbide furnace, 18---right water-gas ventpipe; 19---the retort section of right low-temperature pyrolysis carbide furnace, 20---the reducing zone of producer gas generator, 21---the zone of combustion of producer gas generator; 22---water-cooling jacket; 23---producer gas generator lime-ash section, 24---the ash-pan of producer gas generator ash discharge, 25---the inlet of producer gas generator vaporized chemical; 26---the slit of low-temperature pyrolysis carbide furnace outer wall destructive distillation combustion gas ventpipe, 27---the destructive distillation combustion gas ventpipe in the many slits of low-temperature pyrolysis carbide furnace outer wall belt.
Concrete examples of implementation
According to Fig. 1, rubbish destructive distillation-gasification process stove is made up of left and right two low-temperature pyrolysis charring furnaces (II, III) and a producer gas generator (I), and rubbish is promoted by grab bucket; Get into rubbish surge chamber (7 and 13) from the opening for feed (6 and 14) of left and right two low-temperature pyrolysis carbide furnaces; The pusher hydro-cylinder of left and right low-temperature pyrolysis carbide furnace (5 and 15) advances, and rubbish is compressed and seals rubbish surge chamber (7 and 13), and the binder hydro-cylinder of low-temperature pyrolysis carbide furnace is carried on (9 and 11); The inside feeding gate of low-temperature pyrolysis carbide furnace (8 and 12) is opened; Pusher hydro-cylinder (5 and 15) is advanced to total travel again, sends into the low-temperature pyrolysis carbide furnace to rubbish, and the binder hydro-cylinder of low-temperature pyrolysis carbide furnace (9 and 11) presses down; Seal the inside feeding gate (8 and 12) of low-temperature pyrolysis carbide furnace simultaneously, pusher hydro-cylinder (5 and 15) turns back to starting position.New rubbish is gone into stove, promotes low-temperature pyrolysis carbide furnace front end and has accomplished the carbide that dry distillation reactor stays, falls in the burner hearth of producer gas generator (I); The vaporized chemical (air and water vapor) that blasts with inlet (25) from the producer gas generator vaporized chemical; Combustion reactions takes place in zone of oxidation (21), the high temperature that the carbide burning produces, at reducing zone (20) also there is not the heating of incendiary carbide at producer gas generator (I); Scorching hot carbide is very strong reductive agent, the CO of burning generation
2And water vapor (H
2O) reduction generates carbon monoxide and hydrogen (C+CO2 → 2CO, C+H
2O → CO+H
2), i.e. water-gas.Pyritous water-gas rises along low-temperature pyrolysis carbide furnace outer wall water-gas ventpipe (2 and 18); The retort section that tilts for the low-temperature pyrolysis carbide furnace provides rubbish pyrogenous heat; The drying and forewarm section of low-temperature pyrolysis carbide furnace rubbish dry, preheating, the rubbish destructive distillation produces the water vapor that waits the destructive distillation combustion gas formed and the moisture in the rubbish to receive the thermal evaporation generation by alkanes (CmHn), through the slit (26 that is distributed in low-temperature pyrolysis carbide furnace outer wall and water-gas ventpipe (2 and 18) destructive distillation combustion gas ventpipe side by side; Referring to Fig. 2); Get into dry distillation gas ventpipe (27), destructive distillation combustion gas and water-gas are collected through combustion gas escape pipe (9) and are utilized, and the inorganic components in the rubbish can not be decomposed; Just fall into the ash bed (23) of producer gas generator; Discharge out of the furnace from the ash-pan (24) of producer gas generator ash discharge, because passed through the high temperature harmless treatment, can be used to pave the way, landfill or produce building materials.So far, realize waste reductionization and non-exhaust emission, pollution-free processing while, also realized the resource utilization of rubbish.
The practicality of industry
The present invention is not only applicable to refuse treatment, is applicable to stalk gasification stove and producer gas generator yet, and being used for stalk gasification stove can enlargement of scale, raise the efficiency; Be used for producer gas generator and can improve heat transfer conditions and ventilation property, coal enlargement of scale and the utilising efficiency that improves coal.The switch technology of domestic refuse biological flue gas can also utilize coal gas synthetic fertilizer and many organic substances than waste incineration and generating electricity better meliority to be arranged.
Claims (5)
1. a non-exhaust emission, free of contamination destructive distillation-gasification garbage disposal furnace; Its technical characterictic is: adopt two low-temperature pyrolysis rubbish charring furnaces (II and III) and a two stage type gas generating furnace (I) to form; Low-temperature pyrolysis rubbish charring furnace (II and III) is provided with vertical rubbish drying and forewarm section (3 and 17), time enough is arranged rubbish oven dry and preheating to guarantee rubbish at stove; The outer wall of low-temperature pyrolysis charring furnace (II and III); The staggered destructive distillation combustion gas ventpipe (27) that is covered with water-gas ventpipe (2,18) and has many slits; Through furnace roof converges and leads to combustion gas escape pipe (9), and the inlet of control rubbish and the inlet of vaporized chemical can be controlled the burning and the reduction situation of producer gas generator.
2. low-temperature pyrolysis charring furnace according to claim 1; Treatment scale according to stove; The height of its rubbish drying and forewarm section (3 and 17) is from 5 meters～15 meters; The quantity of water-gas ventpipe of outer wall (2,18) and destructive distillation combustion gas ventpipe (27) leads directly to the combustion gas escape pipe (9) of furnace roof respectively from 20～40.
3. destructive distillation combustion gas ventpipe according to claim 1 (27) has many slits (26), and the quantity in slit and size are as the criterion with the ventilation property of improving rubbish.
4. according to claim 1 is producer gas generator particular design, and its conversion zone comprises zone of combustion (21) and responding layer (21), and its height is raised the efficiency greater than 0.5 meter greatly.
5. control the burning and the reduction reaction of responding layer, realization optimum control to producer gas generator through the inlet of inlet and the vaporized chemical of control rubbish according to claim 1 is said.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102423806A CN102504882A (en) | 2011-08-23 | 2011-08-23 | Dry distillation-gasification garbage disposal furnace without exhaust emission and pollution |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011102423806A CN102504882A (en) | 2011-08-23 | 2011-08-23 | Dry distillation-gasification garbage disposal furnace without exhaust emission and pollution |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0330819A1 (en) * | 1988-02-06 | 1989-09-06 | DIDIER ENGINEERING GmbH | Process for coking bulk coal and vessel for carrying out such a process |
| CN2507866Y (en) * | 2001-09-01 | 2002-08-28 | 谢东初 | Improved coal gas producer |
| CN2636094Y (en) * | 2003-05-30 | 2004-08-25 | 徐长忠 | Refuse pyrolysis treatment device |
| CN201334465Y (en) * | 2009-01-21 | 2009-10-28 | 河南金土地煤气工程有限公司 | Two-stage hot decoking coal gas producer |
| CN102071063A (en) * | 2011-01-13 | 2011-05-25 | 清华大学 | Low-pressure water-cooled wall gasifier |
-
2011
- 2011-08-23 CN CN2011102423806A patent/CN102504882A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0330819A1 (en) * | 1988-02-06 | 1989-09-06 | DIDIER ENGINEERING GmbH | Process for coking bulk coal and vessel for carrying out such a process |
| CN2507866Y (en) * | 2001-09-01 | 2002-08-28 | 谢东初 | Improved coal gas producer |
| CN2636094Y (en) * | 2003-05-30 | 2004-08-25 | 徐长忠 | Refuse pyrolysis treatment device |
| CN201334465Y (en) * | 2009-01-21 | 2009-10-28 | 河南金土地煤气工程有限公司 | Two-stage hot decoking coal gas producer |
| CN102071063A (en) * | 2011-01-13 | 2011-05-25 | 清华大学 | Low-pressure water-cooled wall gasifier |
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Application publication date: 20120620 |