CN101525118B - Gasification process for producing synthesis gas from garbage and biomass raw materials - Google Patents

Gasification process for producing synthesis gas from garbage and biomass raw materials Download PDF

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Publication number
CN101525118B
CN101525118B CN 200810087055 CN200810087055A CN101525118B CN 101525118 B CN101525118 B CN 101525118B CN 200810087055 CN200810087055 CN 200810087055 CN 200810087055 A CN200810087055 A CN 200810087055A CN 101525118 B CN101525118 B CN 101525118B
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gasification
zone
gas
stove
synthesis gas
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CN 200810087055
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CN101525118A (en
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周开根
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周开根
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00Combustion technologies with mitigation potential
    • Y02E20/16Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
    • Y02E20/18Integrated gasification combined cycle [IGCC], e.g. combined with carbon capture and storage [CCS]

Abstract

The invention provides a gasification process for producing synthesis gas from garbage and biomass raw materials, which relates to a gasification processing technique of garbage and biomasses. The gasification process is characterized in that the technological process mainly comprises a raw material solid matter process, a gas phase circulation loop, a calcium oxide circulation loop and a synthesis gas drawing process; one or a mixture of more garbage, the biomasses and coal is sent into a gasification furnace to perform gasification so as to generate the synthesis gas; and simultaneously, calcium oxide is sent into the gasification furnace, an exothermic reaction of absorbing carbon dioxide by the calcium oxide provides the heat required by the gasification reaction in the furnace, and water vapor is sent into a plasma spraying gun and is heated to more than 3,100 DEG C to generate H2, O, O2 and H2O<*> which are sprayed into the gasification furnace to perform reactions with the garbage and the biomasses and supply heat into the furnace. The gasification process adopts a measure to spray the calcium oxide into the furnace to not only greatly reduce the electric energy consumptionof the plasma spraying gun, but also improve the quality and the yield of the synthesis gas, thus the aim of transforming the garbage and the biomasses into clean energy can be achieved easily.

Description

Rubbish, biomass material are produced the gasifying process of synthesis gas
Affiliated technical field
The present invention relates to the treatment technology of rubbish, living beings, particularly the gasification technology of rubbish, living beings.
Background technology
Current, energy shortage, the situation is tense in environmental protection, and rubbish overflows.Rubbish is along with the continuous expansion of the development of Chinese national economy and city size and increase sharply, and the content of its harmful components is also more and more higher, as handle bad, to pollute the environment, threaten people health, the progress that this not only can restrict society also has influence on the sustainable development of national economy.Current, China handles domestic waste and mainly contains Sanitary Landfill Technology, compost (biochemistry) technology and incineration technology, the major part area adopts sanitary landfill method to handle domestic waste, and this not only need take a large amount of soils, waste resource, and easy contaminated land and underground water; The employing composting process is only utilized the organic matter about 40%, also want the content of heavy metal in the strict control compost goods, prevent and remedy pollution soil and enter the food chain crop, the marketing problem that has the compost goods, need to build supporting burning process equipment, supporting flue gas purification system, also need sanitary filling field and match, have the hidden danger of secondary pollution equally; Adopt the burning electricity generation method to handle domestic waste, can accomplish minimizing, the recycling treatment house refuse, but the main target that burning method processing house refuse is pursued is rubbish fully burning in incinerator, next is only the recovery of energy, because it is big that the consumer waste incineration flue gas has water content, the hydrogen cloride concentration height, material there is bigger corrosivity, can not be arranged on the intense radiation district to heat-energy recovering apparatus, energy recovery is affected, so, there is following shortcoming in waste incineration and generating electricity: 1. be main target with the disposal of refuse, capacity usage ratio only is about 20%; 2. flue gas, CO2 emissions are big, pollutant has dust, hydrogen chloride, hydrogen fluoride, oxysulfide, nitrogen oxide, carcinogenic violent in toxicity (dioxin, furans), heavy metal (mercury, lead, chromium etc.) in the flue gas, though flue gas purification system is arranged, but be difficult to eliminate fully, particularly dioxin, the furans discharging that exceeds standard also lacks the reliable NO of technology at present xTerminal process for purifying with dioxin etc.; 3. can only build garbage incinerating power plant in economically developed big city, the waste resources amount of small and medium-sized cities is not suitable for building refuse-burning plant, thereby can not popularization and application.In sum, sanitary landfill method, compost (biochemistry) method or burning electricity generation method processing domestic waste all exist resource to be not fully utilized and the secondary pollution problem.
China is a large agricultural country, and biomass resource is very abundant, and only non-wood-fibers such as straw, wheat straw, reed, bamboo are just produced per year and surpassed 1,000,000,000 tons, add a large amount of wood machining residues, all are the huge energy " warehouse ".Biomass energy in use produces hardly to be polluted, and does not have SO 2Discharging, the CO of generation 2Need the CO that absorbs in gas and the growing process 2Quantitatively keep balance, be referred to as CO 2Neutral fuel.Replace fossil fuel with biomass energy, but not only continuous utilization, and and environmental protection and ecological effect are outstanding, to improving the atmosphere acid rain environment, alleviating greenhouse effects great benefit is all arranged.Yet the present agricultural surplus materials wasting of resources of China is surprising, except that the fraction rural area is used for the fermentation and biogas production, major part all by directly burning, landfill, rotted.
Rubbish, living beings are converted into the secondary energy sources of cleaning by the method for gasification, can obtain dual beneficial effect, the one, can solve problem of environmental pollution, the 2nd, can reduce dependence to the oil coal resources, for build a resource-conserving society and friendly environment society play positive role.
Summary of the invention
The objective of the invention is to overcome the shortcoming of conventional garbage, biomass processes technology; proposing a kind of is the gasifying process that raw material is produced synthesis gas with rubbish, living beings; institute's production of synthetic gas is used for producing clean energy resource or industrial chemicals; comprise production city coal gas, hydrogen, methyl alcohol, dimethyl ether, realize resource rationally use and environmental protection.
In order to achieve the above object, a kind of gasifying process that the present invention takes, comprise rubbish, living beings, coal gasification treatment technology, it is characterized in that one or more mixing wherein of rubbish, living beings, coal, send into as gasified raw material and to carry out gasification reaction in the gasification furnace and generate synthesis gas, simultaneously calcium oxide, carbon dioxide are sent in the gasification furnace, exothermic reaction with the calcium oxide absorbing carbon dioxide provides the required heat of gasification reaction in the stove, also water vapour is sent into plasma torch to be heated to>3100 ℃, generate H 2, O, O 2And H 2O *Spray in the gasification furnace, react with the rubbish biomass charcoal and heat is provided in stove, the temperature of zoneofoxidation in the stove is reached more than 1300 ℃, wherein: gas phase closed circuit and calcium oxide closed circuit are set outside gasification furnace, press operating condition in the gasification furnace and form baking zone naturally, pyrolysis zone, gasification zone and zoneofoxidation, connect mutually between each zone in the stove, front end or the top of baking zone in stove, the rear portion or the bottom of baking zone are followed successively by pyrolysis zone, gasification zone and zoneofoxidation, the feed(raw material)inlet is on the front end or the top of baking zone, lime-ash is discharged by water seal from the rear end or the bottom of zoneofoxidation, insert the calcium oxide jet pipe in the gasification zone, insert plasma torch in zoneofoxidation.Solid feed is admitted in the gasification furnace in the continuous feed mode, in stove, push and carry out transverse movement or be in vertical motion with self gravitation by feeding machine, during operation, the temperature of control zoneofoxidation is at 1300~1600 ℃, the temperature of gasification zone is at 800~1300 ℃, the temperature of pyrolysis zone is at 300~800 ℃, the temperature of baking zone 〉=120 ℃; Feed stock for blast furnace is at first dried by the fire water vapour in 〉=120 ℃ drying environment, decomposes in 300~800 ℃ pyrolysis environment generates carbon monoxide, carbon dioxide, hydrogen, methane, other gaseous hydrocarbon, steam state tar and solid carbon then; Solid carbon enters the gasification zone, carries out gasification reaction with water vapour in 800~1300 ℃ environment, generates carbon monoxide, carbon dioxide and hydrogen; Carbon residue after the gasification enters zoneofoxidation, with the H that sprays into zoneofoxidation from plasma torch 2, O, O 2, H 2O *Carry out oxidation reaction and gasification reaction, generate carbon monoxide, carbon dioxide and hydrogen; Carbon residue is burnt in zoneofoxidation, and the lime-ash that burns is discharged from the rear portion or the bottom of stove; The heat that zoneofoxidation and gasification zone generate in the stove, carbon dioxide, carbon monoxide, hydrogen and the carbon monoxide that generates in pyrolysis zone, carbon dioxide, hydrogen, methane, other gaseous hydrocarbon, steam state tar, flue gas and the water vapour that in drying environment, produces, by the space between solid material and solid feed is reverse goes, by zoneofoxidation successively to the gasification zone, pyrolysis zone, the baking zone operation, draw outside the stove by the exhanst gas outlet on baking zone top again, circular treatment is carried out in the gasification zone that turns back in the stove by gas-solid separating device and gas phase closed circuit then, water vapour wherein and solid carbon are carried out water gas reaction, generate carbon monoxide, carbon dioxide and hydrogen, methane wherein, other gaseous hydrocarbon, steam state tar decompose or and steam reaction, generate carbon monoxide, carbon dioxide and hydrogen,, thoroughly disintegrated in 800~1300 ℃ the environment in the gasification zone simultaneously by the dioxin that chlorinated organics generates; The calcium oxide that the carbon dioxide that generates in pyrolysis zone, zoneofoxidation, gasification zone is sprayed into the gasification zone absorbs, and generates calcium carbonate and emits heat; What reaction in furnace generated is that the synthesis gas of main component is drawn from the binding site of gasification zone and pyrolysis zone with carbon monoxide and hydrogen; A part of calcium carbonate in the stove mixes with synthesis gas, draws from the binding site of gasification zone and pyrolysis zone; Another part calcium carbonate in the stove mixes with flue gas and pyrolysis gas, draws from the top of baking zone; The calcium carbonate of drawing from gasification furnace and the mixture of synthesis gas separate by gas-solid separating device after lowering the temperature, and isolated calcium carbonate is sent into regeneration reactor; The calcium carbonate of drawing from gasification furnace and the mixture of flue gas separate by gas-solid separating device, and isolated calcium carbonate is sent into regeneration reactor; The calcium carbonate of sending into regeneration reactor is decomposed into calcium oxide and carbon dioxide by adding thermal decomposition, again calcium oxide by closed circuit send back to carry out in the stove recycling; The gasification zone that a part of carbon dioxide is returned gasification furnace is carried out recycling, excess carbon dioxide is discharged or by doing food additives or industrial chemicals utilization after the purified treatment.
In the above-mentioned technological process, the key reaction of carrying out in zoneofoxidation has:
[0009]?C(s)+O 2(g)→CO 2(g) ΔH=+406.96kj/mol
C(s)+1/2O 2(g)→CO(g) ΔH=+203.48kj/mol
C(s)+2H 2(g)→CH 4(g) ΔH=+75.6kj/mol
C(s)+H 2O *(g)→CO(g)+H 2(g) ΔH=-131.2kj/mol
CO(g)+H 2O *(g)→CO 2(g)+H 2(g)?ΔH=+42kj/mol
[0014]?......
The key reaction of carrying out in the gasification zone has:
[0016]?C(s)+H 2O(g)→CO(g)+H 2(g) ΔH=-131.2kj/mol
CH 4(g)+H 2O(g)→CO(g)+3H 2(g) ΔH=-205.8kj/mol
[0018]?CH 4(g)+CO 2(g)→2CO(g)+2H 2(g) ΔH=-247.8kj/mol
C(s)+CO 2(g)→2CO(g) ΔH=-172.2kj/mol
C nH m(g) → nC (s)+m/2H 2(g) heat absorption
C nH m(g)+nH 2O (g) → nCO (g)+(n+m/2) H 2(g) endothermic reaction
C(s)+CO 2(g)→2CO(g) ΔH=-172.2kj/mol
[0023]?CO(g)+H 2O(g)→CO 2(g)+H 2(g) ΔH=+42kj/mol
[0024]?CaO(s)+CO 2(g)→CaCO 3(s) ΔH=+178.8kj/mol
The reaction equation of calcium carbonate decomposes is in regeneration reactor:
CaCO 3(s)→CaO(s)+CO 2(g) ΔH=-178.8kj/mol
In the above-mentioned technology, described gasified raw material comprises rubbish biomass fuel, rubbish moulded coal and the biomass coal of curing molding; The operating pressure of gasification furnace is normal pressure or little negative pressure, and the operating pressure of charging aperture and baking zone is negative pressure 20~30Pa; The working gas of plasma torch is water vapour or system feedback tail gas.
In the above-mentioned technology, also the carbon dioxide of separating in the level treatment process of back is sent into the gasification zone of gasification furnace, the calcium oxide reaction with in the stove generates calcium carbonate and emits heat; In regeneration reactor, adopt biomass burning or fire coal to provide thermal source that the calcium carbonate heating is decomposed into calcium oxide and carbon dioxide, also can introduce auxiliary heating in the regeneration reactor to the gasification furnace waste heat.
In the above-mentioned technology, can also replace plasma torch with the oxygen steam input device, oxygen steam enters zoneofoxidation through air compartment, with comburant oxygen carbon residue is burnt, the heat that burning produces offers the required heat of gasification reaction in the stove, when making gasifying agent with oxygen steam, the temperature of control zoneofoxidation is at 1200~1300 ℃, the temperature of gasification zone is at 800~1200 ℃, the temperature of pyrolysis zone is at 300~800 ℃, the temperature of baking zone>100 ℃, the operating pressure of charging aperture and baking zone is negative pressure 20~30Pa.
The synthesis gas of above-mentioned explained hereafter after being drawn in the gasification furnace, by purified treatment, uses as town gas, or again by back level device fabrication hydrogen or methyl alcohol or dimethyl ether.The lime-ash of discharging in the stove can be used for producing building materials or fertilizer.
In the above-mentioned technology, employing sprays into the measure of calcium oxide absorbing carbon dioxide in stove, not only greatly reduce the power consumption of plasma torch, and the quality and yield of synthesis gas is improved, realize rubbish biomass is converted into the target of clean energy resource easily, simultaneous oxidation calcium is double as dechlorination/desulfurizing agent also, and chlorine component and sulphur component in the synthesis gas are reduced greatly, helps back level purified treatment.
The invention has the beneficial effects as follows: rubbish, living beings are carried out gasification process, produce clean energy resource, the output value height is turned waste into wealth, and has not only eliminated the pollution of rubbish, reduces discharging CO 2, environmental protection and ecological effect are outstanding, can alleviate the energy-intensive situation after the large-scale production.The present invention compares with waste incineration and generating electricity, has following advantage: the solid feed gasification is complete, the energy transformation ratio height; Major product is a clean energy resource, the resource utilization degree height; Discharge amount of exhaust gas is extremely low, carries out purified treatment easily, does not have the secondary pollution phenomenon.The present invention is a main target rubbish is converted into secondary clean energy, really realizes innoxious, the minimizing and the resource of garbage disposal.
Description of drawings
The invention provides following accompanying drawing and be further described, but the specific embodiment of each accompanying drawing and the following stated all is not construed as limiting the invention:
Fig. 1 is a kind of rubbish of the present invention, biogas metallization processes flow diagram.
Fig. 2 is another kind of rubbish of the present invention, biogas metallization processes flow diagram.
The specific embodiment
A kind of rubbish biological raw material shown in the accompanying drawing 1 is produced in the scheme of synthesis gas, technological process is mainly drawn flow process by raw material solid flow process, gas phase closed circuit, calcium oxide closed circuit and synthesis gas and is constituted, wherein, raw material solid flow process is: raw material proceeds to baking zone by inlet, successively by pyrolysis zone, gasification zone, zoneofoxidation, the lime-ash after oxidation burns discharges out of the furnace through the hydrolock outlet again;
The gas phase closed circuit is: the gaseous state thing,, is recycled into the stove interface through gas phase again and turns back to zoneofoxidation in the stove then successively by the outer gas phase closed circuit of pyrolysis zone, baking zone, flue gas recirculation outlet, gas-solid separating device, stove to the gasification zone by the zoneofoxidation in the stove;
The calcium oxide closed circuit is: generate calcium carbonate behind the calcium oxide absorbing carbon dioxide in the stove, a part of calcium carbonate wherein mixes the back and draws outside the stove from the binding site of gasification zone and pyrolysis zone with synthesis gas, separate by cooling system (UTILIZATION OF VESIDUAL HEAT IN), gas-solid separation equipment then, isolated calcium carbonate enters regeneration reactor; Another part calcium carbonate mixes the back draws outside the stove from the top of baking zone with flue gas, separates by gas-solid separator then, and isolated calcium carbonate enters regeneration reactor; Calcium carbonate is regenerated as calcium oxide, enters the calcium oxide storehouse then, by stove external oxidation calcium closed circuit, sprays into gasification zone in the stove by the calcium oxide jet pipe again;
Synthesis gas is drawn flow process: the synthesis gas that generates in the stove is drawn by the binding site of gasification zone and pyrolysis zone, pass through cooling system (UTILIZATION OF VESIDUAL HEAT IN), gas-solid separation equipment, cleaning equipment then successively, the synthesis gas after the purification is as town gas use or hydrogen manufacturing or synthesizing methanol or produce dimethyl ether.
The outer gas phase closed circuit of calcium oxide jet pipe and stove inserts from the gasification zone, and plasma torch inserts from zoneofoxidation.In the present embodiment, rubbish, living beings are cured moulding, or rubbish and coal is mixed and made into moulded coal, or living beings and coal are mixed and made into moulded coal, in the moulded coal raw material, can add calcium oxide as dechlorination/desulfurizing agent, the rubbish of curing molding, biomass material or rubbish moulded coal or biomass coal are admitted in the gasification furnace, simultaneously, calcium oxide is sprayed into gasification zone in the stove, water vapour or feedback tail gas are sent into zoneofoxidation in the stove by plasma torch, the temperature of control zoneofoxidation is at 1300~1600 ℃, the temperature of gasification zone is at 800~1300 ℃, the temperature of pyrolysis zone is at 300~800 ℃, the temperature of baking zone 〉=120 ℃, the operating pressure of charging aperture and baking zone is negative pressure 20~30Pa, raw material is along the solid process flow operation, finishing lime-ash after the gasification is melted in the environment of zoneofoxidation more than 1300 ℃ and is liquid state, molten ash falls into hydrolock slag storehouse promptly becomes the vitreum material, can directly use as construction material.
Among the embodiment shown in the accompanying drawing 2, replace a last embodiment ionic medium spray gun body with the oxygen steam input device, oxygen steam input interface is inserted by the air compartment position of gasification furnace, and the temperature of control zoneofoxidation is negative pressure 20~30Pa at 800~1200 ℃, the temperature of pyrolysis zone at the operating pressure of 300~800 ℃, temperature>100 of baking zone ℃, charging aperture and baking zone at 1200~1300 ℃, the temperature of gasification zone.The lime-ash of present embodiment can be used for producing construction material or fertilizer.

Claims (7)

1. gasifying process of producing synthesis gas, comprise rubbish, living beings, coal gasification treatment technology, it is characterized in that one or more mixing wherein of rubbish, living beings, coal, send into as gasified raw material and to carry out gasification reaction in the gasification furnace, generate synthesis gas, simultaneously calcium oxide, carbon dioxide are sent in the gasification furnace, provide stove the interior required heat of gasification reaction with the exothermic reaction of calcium oxide absorbing carbon dioxide, also water vapour is sent into plasma torch to be heated to>3100 ℃, generate H 2, O, O 2And H 2O *Spray in the gasification furnace, react with the rubbish biomass charcoal and heat is provided in stove, the temperature of zoneofoxidation in the stove is reached more than 1300 ℃, wherein:
Gas phase closed circuit and calcium oxide closed circuit are set outside gasification furnace, press operating condition in the gasification furnace and form baking zone, pyrolysis zone, gasification zone and zoneofoxidation naturally, connect mutually between each zone, front end or the top of baking zone in stove, the rear portion of baking zone or bottom are followed successively by pyrolysis zone, gasification zone and zoneofoxidation, the feed(raw material)inlet is on the front end or the top of stove, lime-ash is discharged by water seal from the rear end or the bottom of stove, insert the calcium oxide jet pipe in the gasification zone, insert plasma torch in zoneofoxidation, synthesis gas is drawn from the binding site of pyrolysis zone and gasification zone;
During gasifier operation, the temperature of control zoneofoxidation is at 1300~1600 ℃, and the temperature of gasification zone is at 800~1300 ℃, and the temperature of pyrolysis zone is at 300~800 ℃, the temperature of baking zone 〉=120 ℃; The operating pressure of gasification furnace is normal pressure or little negative pressure, and the operating pressure of charging aperture and baking zone is negative pressure 20~30Pa;
Raw material is admitted in the gasification furnace in the continuous feed mode, is at first dried by the fire water vapour in drying environment, and decomposes in pyrolysis environment generates carbon monoxide, carbon dioxide, hydrogen, methane, other gaseous hydrocarbon, steam state tar and solid carbon then; Solid carbon enters the gasification zone, carries out gasification reaction with water vapour, generates carbon monoxide, carbon dioxide and hydrogen; Carbon residue after the gasification enters zoneofoxidation, with the H that sprays into zoneofoxidation from plasma torch 2, O, O 2, H 2O *Carry out oxidation reaction and gasification reaction, generate carbon monoxide, carbon dioxide and hydrogen; Carbon residue is burnt in zoneofoxidation, and the lime-ash that burns is discharged from the rear portion or the bottom of stove; The water vapour that produces in drying environment and the carbon monoxide, carbon dioxide, hydrogen, methane, other gaseous hydrocarbon and the steam state tar that generate in pyrolysis environment are drawn by the top of baking zone, turn back to gasification zone in the stove by outer gas-solid separating device of stove and gas phase closed circuit then, water vapour wherein and solid carbon are carried out water gas reaction, generate carbon monoxide, carbon dioxide and hydrogen, methane wherein, other gaseous hydrocarbon, steam state tar decompose or and steam reaction, generate carbon monoxide, carbon dioxide and hydrogen; The calcium oxide that the carbon dioxide that generates in pyrolysis zone, zoneofoxidation, gasification zone is sprayed into the gasification zone absorbs, and generates calcium carbonate and emits heat; What reaction in furnace generated is that the synthesis gas of main component is drawn from the binding site of gasification zone and pyrolysis zone with carbon monoxide and hydrogen; A part of calcium carbonate in the stove mixes with synthesis gas, draws from the binding site of gasification zone and pyrolysis zone; Another part calcium carbonate in the stove mixes with flue gas and pyrolysis gas, draws from the top of baking zone;
The calcium carbonate of drawing from gasification furnace and the mixture of synthesis gas separate by gas-solid separating device after lowering the temperature, and isolated calcium carbonate is sent into regeneration reactor;
The calcium carbonate of drawing from gasification furnace and the mixture of flue gas separate by gas-solid separating device, and isolated calcium carbonate is sent into regeneration reactor;
The calcium carbonate of sending into regeneration reactor is decomposed into calcium oxide and carbon dioxide by adding thermal decomposition, again calcium oxide by closed circuit send back to carry out in the stove recycling;
Synthesis gas through gas-solid separating device is separated after purified treatment, uses as town gas, or again by back level device fabrication hydrogen or methyl alcohol or dimethyl ether.
2. a kind of gasifying process of producing synthesis gas according to claim 1 is characterized in that gasified raw material comprises rubbish biomass fuel, rubbish moulded coal and the biomass coal of curing molding.
3. a kind of gasifying process of producing synthesis gas according to claim 1, the working gas that it is characterized in that plasma torch are water vapour or system feedback tail gas.
4. a kind of gasifying process of producing synthesis gas according to claim 1 is characterized in that also double as dechlorination/desulfurizing agent of calcium oxide.
5. a kind of gasifying process of producing synthesis gas according to claim 1 is characterized in that the carbon dioxide of separating in the back level treatment process is sent into the gasification zone of gasification furnace, and the calcium oxide reaction with in the stove generates calcium carbonate and also emits heat.
6. a kind of gasifying process of producing synthesis gas according to claim 1 is characterized in that the calcium carbonate heating in the regeneration reactor provides thermal source or fire coal that thermal source is provided by biomass burning.
7. a kind of gasifying process of producing synthesis gas according to claim 1, it is characterized in that replacing plasma torch with the oxygen steam input device, oxygen steam enters zoneofoxidation through air compartment, with comburant oxygen carbon residue is burnt, the heat that burning produces offers the required heat of gasification reaction in the stove; During gasifier operation, the temperature of control zoneofoxidation is at 1200~1300 ℃, and the temperature of gasification zone is at 800~1200 ℃, and the temperature of pyrolysis zone is at 300~800 ℃, the temperature of baking zone>100 ℃, and the operating pressure of charging aperture and baking zone is negative pressure 20~30Pa.
CN 200810087055 2008-03-07 2008-03-26 Gasification process for producing synthesis gas from garbage and biomass raw materials CN101525118B (en)

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