CN204325282U - Plasma asistance rubbish fluidized bed gasification system - Google Patents

Plasma asistance rubbish fluidized bed gasification system Download PDF

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Publication number
CN204325282U
CN204325282U CN201420767387.9U CN201420767387U CN204325282U CN 204325282 U CN204325282 U CN 204325282U CN 201420767387 U CN201420767387 U CN 201420767387U CN 204325282 U CN204325282 U CN 204325282U
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fluidized
rubbish
plasma
bed reactor
reformer chamber
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CN201420767387.9U
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王晓亮
王希
张春飞
谢斐
李宏
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DONGFANG ELECTRIC Co Ltd
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Dongfang Electric Corp
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Abstract

The utility model relates to a kind of plasma asistance rubbish fluidized bed gasification system, comprise feeding garbage device, fluidized-bed reactor, plasma reformer chamber, cyclonic separator, feeding garbage device is connected with fluidized-bed reactor, fluidized-bed reactor connects plasma reformer chamber by syngas outlet one, and plasma reformer chamber connects cyclonic separator; Plasma reformer chamber top is provided with two plasmatorchs in a certain angle; The utility model adopts sidepiece charging, top exhaust, reforming reaction room to remove hazardous and noxious substances, synthetic gas improve the thermal source of refuse pyrolysis gasification structure as cycling stream wind transmission, the calorific value of rubbish self is utilized to carry out anoxycausis pyrolytic gasification, afterwards plasma pyroprocessing is carried out to its synthetic gas produced and flying dust, avoid plasma high temperature and directly pyrolytic gasification is carried out to rubbish, greatly reduce power consumption, the high-temperature synthesis gas simultaneously making pyrolytic gasification produce can the removal wherein objectionable impurities such as dioxin of safety and stability.

Description

Plasma asistance rubbish fluidized bed gasification system
Technical field
The utility model relates to the treatment technology of domestic waste, specifically a kind of plasma asistance rubbish fluidized bed gasification system that can prevent dioxin from producing.
Background technology
Along with the sustainable growth of global economy and the acceleration of urbanization process, the generation of domestic refuse has become a day by day serious environmental problem.The continuous increase of municipal wastes output and the environmental pollution caused thereof have become the problem of institute of various countries facing, and the harmless treatment of domestic waste promotes one of economy and the ecotope important measures reaching Sustainable development.
At present, domestic waste innoxious process for treating has composting technology, Landfill, incineration technology and gasification technology etc.Landfill or compost all can not realize the innoxious of refuse treatment and minimizing completely, and landfill still needs to take a large amount of soil.Because burning disposal can realize municipal wastes energy recovery, subtract the objects such as appearance, loss of weight, high-temperature sterilization, there is obvious advantage in environment protection and the utilization of resources, thus developed faster in China in recent years.But waste incineration causes the secondary pollution problems such as dioxin and heavy metal can not be ignored, and constrains the large-scale application of garbage incineration technology.
Gasification technology is a kind of novel technology of garbage disposal, compared with the waste disposal method of routine, Gasification Technique has that energy recovery utilization ratio is high, secondary pollution is little, exhaust gas volumn is little, finishing apparatus is simple, and the combination of gasification and plasma melting treatment technology makes while being used to the organic composition of rubbish, stabilization harmless treatment and recycling can be carried out to inorganic components, thus fundamentally solve the secondary pollution such as dioxin and heavy metal problem, there is vast potential for future development.
Such as publication number is CN103275762A, publication date is the Chinese invention patent document of 20130904, disclose a kind of plasma body fluidisation bed gasifying apparatus, relate to plasma gasification furnace apparatus, primarily of top cover, upper furnace body, insulated connecting piece, lower furnace body, anode, negative electrode and pedestal composition, negative electrode is arranged on the interior space on lower furnace body top, the cylinder upper end of negative electrode is bell mouth shape, there is eddy flow groove bell-mouthed outer, insulated connecting piece is arranged between anode and lower furnace body, the axis through-hole of anode forms compression duct, the hydraucone of compressing hole road outlet forms Anode arc root district, watercooling jacket is had in the body of anode, upper furnace body is arranged on anode, the formation gasification zone, interior space of upper furnace body, top cover there is synthetic gas output interface pick out.This technical scheme is exactly the feature utilizing plasma fluidized-bed, achieves the gasification process technique to rubbish.But the plasma refuse gasification technology of present stage still has many weak points.First, need greatly power with plasma torch direct gasification rubbish, its specific power consumption can arrive 30% ~ 40% of its electrogenesis power, causes operation cost greatly to increase because power consumption is too high, makes it not possess commercial off-the-shelf and is worth.Its two, the method gasification rubbish, subsequent gases scavenging process also needs Jia dioxin treatment unit, adds disposable input in advance, and its equipment cost is significantly improved.3rd, use plasma torch direct gasification rubbish, because its thermo parameters method is uneven, rubbish completely by pyroprocessing, can not be had a large amount of dioxin and other objectionable impuritiess, cause the process of its waste residue to become a difficult problem again in the waste residue of discharge.
Utility model content
The defect that the utility model exists for existing plasma gasification technology and deficiency, provide a kind of plasma asistance rubbish fluidized bed gasification system, synthetic gas reformation after utilizing plasma torch fluidized bed pyrolysis to be gasified as high-quality external heat source, get rid of domestic refuse issuable all objectionable impuritiess in pyrolytic gasification process, and utilize the thermal source that part high-temperature synthesis gas gasifies as refuse pyrolysis as fluidized wind, reduce disposable input cost and the operation cost of rubbish plasma gasification, and make synthetic gas purer.
The technical solution of the utility model is as follows:
Plasma asistance rubbish fluidized bed gasification system, it is characterized in that: comprise feeding garbage device, fluidized-bed reactor, plasma reformer chamber, cyclonic separator, feeding garbage device is connected with fluidized-bed reactor, fluidized-bed reactor connects plasma reformer chamber by the syngas outlet one at fluidized-bed reactor top, and plasma reformer chamber connects cyclonic separator; The top of described plasma reformer chamber is provided with two plasmatorchs, and in α angle between two plasmatorchs, α is 40 °-50 °, effectively can be got rid of the hazardous and noxious substances the synthetic gas come from fluidized-bed reactor outlet by plasmatorch.
The locular wall of described plasma reformer chamber is water wall or inner lining refractory.
Described plasma reformer chamber is rectangular structure.
Described fluidized-bed reactor is cylindric, and the inwall of fluidized-bed reactor is water wall or inner lining refractory structure; The bottom of described fluidized-bed reactor is provided with rubbish charging opening, lime-ash return port, and bottom connects recirculating air return port by air distribution plate.
Described feeding garbage device comprises rubbish feed bin, material feeder and fire door, and rubbish feed bin is connected with material feeder, and material feeder is connected with the rubbish charging opening of fluidized-bed reactor, arranges fire door between material feeder and rubbish charging opening.When carrying out feed, by material feeder, the rubbish dropped in rubbish feed bin is pushed into fluidized-bed gasification reaction chamber before fire door, and is isolated by fire door and fluidized-bed gasification reaction chamber; Fire door keeps closing condition when material feeder is regained, and closes fire door and burner hearth and the external world can be made to separate carry out Thorough combustion.
Described rectangle reforming reaction room is tangentially connected with cyclonic separator, and the bottom of cyclonic separator is connected with the lime-ash return port of fluidized-bed reactor, and cyclonic separator top arranges syngas outlet two.
The beneficial effects of the utility model are as follows:
The utility model adopts sidepiece charging, top is vented, hazardous and noxious substances is got rid of in reforming reaction room, synthetic gas improves the structure of the thermal source of refuse pyrolysis gasification as cycling stream wind transmission, the calorific value of rubbish self is utilized to carry out anoxycausis pyrolytic gasification, afterwards plasma pyroprocessing is carried out to its synthetic gas produced and flying dust, this avoid plasma high temperature and directly pyrolytic gasification is carried out to rubbish, greatly reduce power consumption, the high-temperature synthesis gas simultaneously making pyrolytic gasification produce can the removal wherein objectionable impurities such as dioxin of safety and stability, without the need to increasing dioxin treatment facility in subsequent technique, greatly reduce the input in advance of equipment.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the utility model ion assisted spam fluidized gasification system;
In figure, Reference numeral is: 1 feeding garbage device, 1-1 rubbish feed bin, 1-2 material feeder, 1-3 fire door, 2 fluidized-bed reactors, 2-1 syngas outlet one, 2-2 rubbish charging opening, 2-3 lime-ash return port, 2-4 air distribution plate, 2-5 recirculating air return port, 3 plasma reformer chamber, 4 cyclonic separators, 4-1 syngas outlet two.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail:
As shown in Figure 1, plasma asistance rubbish fluidized bed gasification system, comprises feeding garbage device 1, fluidized-bed reactor 2, plasma reformer chamber 3, cyclonic separator 4.
Described fluidized-bed reactor 2 is cylindric, and be water wall or inner lining refractory structure, its top is provided with syngas outlet one 2-1, and bottom is provided with rubbish charging opening 2-2, lime-ash return port 2-3, and bottom is connected with air distribution plate 2-4 and recirculating air return port 2-5.
Described feeding garbage device 1 comprises rubbish feed bin 1-1, material feeder 1-2 and fire door 1-3, and feeding device material feeder 1-2 is connected with the rubbish charging opening 2-2 of fluidized-bed reactor 2.By material feeder 1-2, the rubbish dropped in rubbish feed bin 1-1 is pushed into fluidized-bed gasification reaction chamber before fire door 1-3 during feed, and is isolated by fire door 1-3 and fluidized-bed gasification reaction chamber.Fire door 1-3 keeps closing condition when material feeder 1-2 regains, and closes fire door 1-3 and burner hearth and the external world can be made to separate.
Described plasma reformer chamber 3 is connected with syngas outlet one 2-1 at the top of fluidized-bed reactor 2, for rectangle, water wall or inner lining refractory structure, its top is provided with two and is mutually the plasmatorch 3-1 at α angle for getting rid of from the hazardous and noxious substances the synthetic gas of fluidized-bed reactor 2 outlet, and α is 40-50 °.
Described rectangle reforming reaction room 3 is tangentially connected with cyclonic separator 4, and the bottom of cyclonic separator 4 is connected with the lime-ash return port 2-3 of fluidized-bed reactor 2, and the top of cyclonic separator 4 arranges syngas outlet two 4-1.
The working process of the utility model plasma asistance rubbish fluidized bed gasification system is: rubbish drops into rubbish feed bin 1-1 by material feeder 1-2, rubbish is pushed in fluidized-bed reactor 2 before fire door 1-3, and rubbish feed bin 1-1 and fluidized-bed reactor 2 isolate by fire door 1-3; Rubbish decomposes in fluidized-bed reactor 2 under 800 DEG C of high temperature, decomposes and obtains synthetic gas and garbage flying ash; The synthetic gas that gasification reaction in decomposition course generates comprises H 2and CO; The synthetic gas being entrained with garbage flying ash enters into plasma reformer chamber 3 from syngas outlet one 2-1 at the top of fluidized-bed reactor 2, in plasma reformer chamber 3, is heated up by plasma torch heats, and the hazardous and noxious substances in synthetic gas and garbage flying ash is decomposed; The synthetic gas carrying garbage flying ash secretly through plasma reformer chamber 3 tangentially enters into cyclonic separator 4, revolving under wind action, got rid of by garbage flying ash, garbage flying ash is fed to lime-ash return port 2-3 through material returning device and enters in the burner hearth of fluidized-bed reactor 2 to maintain the balance of main circulation loop solids; The synthetic gas carrying a small amount of flying dust after cyclonic separator 4 dedusting secretly enters into subsequent purification technique through syngas outlet two 4-1 at the top of cyclonic separator 4; The connection line of syngas outlet two 4-1 at cyclonic separator 4 top has a by-pass line extraction as the cycling stream wind transmission of fluidized-bed reactor 2, cycling stream wind transmission enters in fluidized-bed reactor 2 through the recirculating air return port 2-5 of the bottom of fluidized-bed reactor 2, enters in fluidized-bed reactor 2 thermal source provided required for refuse pyrolysis gasification under the effect of air distribution plate 2-4.

Claims (6)

1. plasma asistance rubbish fluidized bed gasification system, it is characterized in that: comprise feeding garbage device (1), fluidized-bed reactor (2), plasma reformer chamber (3), cyclonic separator (4), feeding garbage device (1) is connected with fluidized-bed reactor (2), fluidized-bed reactor (2) connects plasma reformer chamber (3) by the syngas outlet one (2-1) at fluidized-bed reactor (2) top, and plasma reformer chamber (3) connects cyclonic separator (4); The top of described plasma reformer chamber (3) is provided with two plasmatorchs, and in α angle between two plasmatorchs, α is 40 °-50 °.
2. plasma asistance rubbish fluidized bed gasification system according to claim 1, is characterized in that: the locular wall of described plasma reformer chamber (3) is water wall or inner lining refractory.
3. plasma asistance rubbish fluidized bed gasification system according to claim 1 and 2, is characterized in that: described plasma reformer chamber (3) is rectangular structure.
4. plasma asistance rubbish fluidized bed gasification system according to claim 1, is characterized in that: described fluidized-bed reactor (2) is for cylindric, and the inwall of fluidized-bed reactor (2) is water wall or inner lining refractory structure; The bottom of described fluidized-bed reactor (2) is provided with rubbish charging opening (2-2), lime-ash return port (2-3), and bottom connects recirculating air return port (2-5) by air distribution plate (2-4).
5. plasma asistance rubbish fluidized bed gasification system according to claim 1, it is characterized in that: described feeding garbage device (1) comprises rubbish feed bin (1-1), material feeder (1-2) and fire door (1-3), rubbish feed bin (1-1) is connected with material feeder (1-2), material feeder (1-2) is connected with the rubbish charging opening (2-2) of fluidized-bed reactor (2), arranges fire door (1-3) between material feeder (1-2) and rubbish charging opening (2-2).
6. plasma asistance rubbish fluidized bed gasification system according to claim 1, it is characterized in that: described rectangle reforming reaction room is tangentially connected with cyclonic separator (4), the bottom of cyclonic separator (4) is connected with the lime-ash return port (2-3) of fluidized-bed reactor (2), and the top of cyclonic separator (4) arranges syngas outlet two (4-1).
CN201420767387.9U 2014-12-09 2014-12-09 Plasma asistance rubbish fluidized bed gasification system Active CN204325282U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104449871A (en) * 2014-12-09 2015-03-25 中国东方电气集团有限公司 Gasification system for plasma-assisted garbage fluidized bed
CN105462619A (en) * 2015-12-31 2016-04-06 大连科林能源工程技术开发有限公司 Gasification process system for urban household garbage and industrial organic solid waste
CN107667162A (en) * 2015-06-30 2018-02-06 永泰能源有限公司 Utilize the device for producing hydrogen and hydrogen production process of steam plasma
CN109593535A (en) * 2018-12-18 2019-04-09 天津大学 The apparatus and method of solid waste pyrolytic gasification -- reforming plasma
CN112552962A (en) * 2020-12-04 2021-03-26 陕西延长石油(集团)有限责任公司 Multi-stage circulating gasification device and method for carbon-containing solid particles

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104449871A (en) * 2014-12-09 2015-03-25 中国东方电气集团有限公司 Gasification system for plasma-assisted garbage fluidized bed
CN107667162A (en) * 2015-06-30 2018-02-06 永泰能源有限公司 Utilize the device for producing hydrogen and hydrogen production process of steam plasma
CN105462619A (en) * 2015-12-31 2016-04-06 大连科林能源工程技术开发有限公司 Gasification process system for urban household garbage and industrial organic solid waste
CN109593535A (en) * 2018-12-18 2019-04-09 天津大学 The apparatus and method of solid waste pyrolytic gasification -- reforming plasma
CN112552962A (en) * 2020-12-04 2021-03-26 陕西延长石油(集团)有限责任公司 Multi-stage circulating gasification device and method for carbon-containing solid particles

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Effective date of registration: 20180503

Address after: 610000 18 West core road, hi-tech West District, Chengdu, Sichuan

Patentee after: Dongfang Electric Co., Ltd.

Address before: 610036 Shu Han Road, Jinniu District, Chengdu, Sichuan Province, No. 333

Patentee before: Dongfang Electric Corporation

TR01 Transfer of patent right