CN109280566A - A method of using bagasse as the extensive producing synthesis gas of raw material - Google Patents
A method of using bagasse as the extensive producing synthesis gas of raw material Download PDFInfo
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- CN109280566A CN109280566A CN201811322418.9A CN201811322418A CN109280566A CN 109280566 A CN109280566 A CN 109280566A CN 201811322418 A CN201811322418 A CN 201811322418A CN 109280566 A CN109280566 A CN 109280566A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
- C10J3/60—Processes
- C10J3/64—Processes with decomposition of the distillation products
- C10J3/66—Processes with decomposition of the distillation products by introducing them into the gasification zone
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/58—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels combined with pre-distillation of the fuel
- C10J3/60—Processes
- C10J3/62—Processes with separate withdrawal of the distillation products
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/72—Other features
- C10J3/82—Gas withdrawal means
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
- C10J2300/0906—Physical processes, e.g. shredding, comminuting, chopping, sorting
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/0916—Biomass
- C10J2300/092—Wood, cellulose
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0953—Gasifying agents
- C10J2300/0959—Oxygen
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/12—Heating the gasifier
- C10J2300/1207—Heating the gasifier using pyrolysis gas as fuel
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/1603—Integration of gasification processes with another plant or parts within the plant with gas treatment
- C10J2300/1615—Stripping
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Materials Engineering (AREA)
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
Abstract
The present invention relates to a kind of using bagasse as the method for the extensive producing synthesis gas of raw material, the process flow is: bagasse is first oven-dried concurrent heat cracking through anoxybiotic all-radiant furnace hyperthermia radiation and becomes pyrolysis gas, water, oil, charcoal, pyrolysis gas can extract through pressure-variable adsorption and be rich in methane and hydrocarbon gas, used in radiant tube burning for all-radiant furnace, carbon dioxide can further purify recycling, remaining is the synthesis gas rich in carbon monoxide and hydrogen, pyrolytic carbon is tentatively crushed, with pyrolysis oil, water enters grinding machine (appropriate additive is added) and charcoal slurry is made, air-bed flow pattern gasification furnace is used to be gasified further for the synthesis gas based on carbon monoxide and hydrogen.The present invention takes full advantage of the local supplies production high added value energy chemistry product of this characteristic of bagasse abundant; bagasse source is concentrated, yield is big, collection is simple, transportation radius is small; it is easy to large-scale production, while overcomes the problems, such as that the aqueous dose rate of bagasse is high, being not easy to grind, form etc. to cause to be difficult to direct gasification.
Description
Technical field
The present invention relates to a kind of method for preparing synthesis gas, in particular to one kind produces conjunction as raw material using bagasse on a large scale
At the method for gas.
Background technique
Energy and environmental problem has become the focus of global concern, with increasing rapidly for AND ENERGY RESOURCES CONSUMPTION IN CHINA, fossil combustion
A large amount of uses of material bring serious environmental pollution and ecological disruption.Since the 1980s, world oil fuel
Consumption is constantly soaring with being significantly increased for total vehicle, and Chinese automobile petrol and diesel oil consumption at present accounts for national petrol and diesel oil consumption
Ratio have reached 55% or more, 70% or more of annual newly-increased petroleum consumption is consumed by newly-increased automobile.If fast like this
Degree continues development and goes down, without how long the mankind can will pay thus bitter cost: or be that petroleum resources are exhausted or be ground
Ball due to a large amount of greenhouse gases discharge and there is serious environmental disaster.Automobile is an important mark of human material's civilization
Will, to solve the problems, such as to be nearly impossible by limiting demand of the people to automobile, it is therefore necessary to which developing can replace
For other fuel of petroleum, and the raw material for producing this alternative fuel must also be it is reproducible, i.e., alternative fuel is a kind of
With environmental-friendly green fuel.
Biomass is a kind of desirable feedstock that this green fuel can be mass produced, and can be uniquely stored on the earth
With transportable clean energy resource, because it can not only be regenerated, but also total amount is very huge, also very friendly with environment, exploitation
It has a high potential.The composition of biomass is C-H compound, it and conventional fossil energy such as petroleum, coal etc. are similar (coal and stone
Oil is all biomass by converting for a long time), it is the organic matter that plant is generated by photosynthesis, and main body is various
Green plants.Although biomass resource has, sulfur content is low, resource is extensive, can permanently utilize and not increase earth's surface CO2Circulation
The features such as total amount, but at present there are still certain obstacle in terms of development and utilization, mainly resource is excessively dispersed, and is collected difficult
The problems such as.Because Chinese overwhelming majority rural area is all the resource dispersion using peasant household as production unit, collection and transport difficult, such as advise
Modelling application will lead to the increasing of biomass collection radius and transportation cost improves, and may lost economy.
Bagasse is the principal by product of sugar industry, is remaining major part after sugarcane mechanical compaction, belongs to agricultural
One of solid waste, ingredient is based on cellulose, hemicellulose and lignin, albumen, starch and soluble sugar
Content is less.Bagasse lies in fragments through squeezing or silk, powdery, can save pre-processing device and power, and stores and transport
It is all more convenient, thus it is a kind of big, cheap, source concentration the renewable resource of yield, contains biomass abundant
Energy.The agriculture and forestry organic waste material (forestry processing waste material, agricultural crop straw) etc. of interest with the non-grain Biomass Energy Industry of current development
Wooden Biomass raw material is compared, and bagasse source is concentrated, yield is big, collection is simple, transportation radius is small, and sugarcane slag ingredient is opposite
Stablize, property is uniform, is used for the production of high value added product, raw material centrality, continuity needed for can meeting industrialization
And uniformity requirements, therefore bagasse is the quality raw materials of biorefinery.China is the third sugarcane for being only second to Brazil and India
Big country is planted, Hainan, Guangdong, Guangxi, Fujian, Yunnan are all important the sugared province of production.In Closed Circulation in Sugar Production technique, the every production of factory
Raw one ton of white granulated sugar can probably generate one ton of bagasse.According to statistics, nearly ten million ton of bagasse yield of each squeezing season whole nation,
It can be seen that the whole nation every year can output bagasse quantity it is a lot of, each sugar refinery inventory a large amount of bagasse.Bagasse passes
The processing method of system is burnt primarily as boiler oil to utilize its calorific value, or is sold to enterprises in pulp and paper industry production paper
Or cardboard.For a long time, large batch of bagasse burns up as boiler oil every year, although the energy that can solve sugar refinery is asked
Topic.But it is this using relatively simple, economic benefit is low, results in waste of resources.So finding the approach sugarcane of higher value application
Slag becomes an important measure of sugar industry.
Since the energy density of bagasse is lower, belong to low-grade energy, directly using with certain limitation.It adopts
Bagasse can be converted to high-grade liquid fuel with two methods.First is that biotechnology method, but due to the wood in bagasse
Not only itself crystal structure is extremely complex for matter cellulose, but also is coated with by the lignin for being difficult to degrade, so that cellulose drops
Solution enzyme is difficult to play degradation under cryogenic.So this method is also only at conceptual phase at present, it is difficult to carry out
Commercial applications.Another kind is thermochemical method, and this method can first pass through gasification and obtain synthesis gas, then synthesizes liquid again
The indirect liquid fuel was prepared of fluid fuel, i.e. thermochemical method, essence is exactly chemical industry synthesis.Synthesis gas is with hydrogen (H2) and an oxygen
Changing carbon (CO) is a kind of unstripped gas of main component for chemical synthesis, it can be used as intermediate for petrochemical industry or
Various high-quality liquid fuels and chemicals, such as hydrogen, methanol, dimethyl ether, ethyl alcohol are prepared by F- T synthesis.But work as previous existence
The main problem of substance thermochemical study approach is: causing in synthesis gas there are a large amount of nitrogen when (1) utilizing air direct gasification
Flow rate is low, poor quality；(2) GAS QUALITY is not only influenced there are tar in gasification product, but also tar excessively will lead to
The failures such as upstream device blocking, catalyst carbon deposit.In addition, bagasse moisture content is up to 40~50%, fiber filament is also difficult to grind,
Molding, this brings many difficulties to bagasse direct gasification.It there is no greatly by the current country of waste synthesis gas of bagasse
The production demonstration device of scale.
Summary of the invention
The technical problem to be solved by the present invention is providing a kind of using bagasse as the side of the extensive producing synthesis gas of raw material
Method, this method comprehensively utilize cracking gas, water, oil, charcoal first with anoxybiotic all-radiant furnace to bagasse drying and thermal cracking, most
The synthesis gas with very high utility value is obtained eventually, and this method takes full advantage of the local supplies of this characteristic of bagasse abundant
High added value energy chemistry product are produced, while overcoming the aqueous dose rate height of bagasse, being not easy to grind, form etc. to cause to be difficult to direct gas
The problem of change.
The technical solution for solving above-mentioned technical problem is: a kind of using bagasse as the side of the extensive producing synthesis gas of raw material
Method, comprising the following steps:
(1) bagasse is first oven-dried concurrent heat cracking through anoxybiotic pyrolysis oven hyperthermia radiation and becomes pyrolytic carbon and contain to be pyrolyzed gas and water
The gas-liquid mixture of steam, pyrolysis oil；
(2) gas-liquid mixture that step (1) obtains gas phase, liquid phase separation after refrigerated separation device is cooling obtains pyrolysis gas and heat
Grease is solved, pyrolysis gas extracts methane and other hydrocarbon gas, carbon dioxide through pressure-variable adsorption respectively, and residue is to be rich in
The synthesis gas of carbon monoxide and hydrogen；
(3) step (2) is isolated pyrolysis grease adjusts pH value and is greater than 8, the pyrolytic carbon that step (1) obtains crush after with pyrolysis oil
Water enters grinding machine together, while into grinding machine, addition is pyrolyzed the additive of grease and pyrolytic carbon total weight 2~5%, grinds by grinding machine
The slurry that concentration is 59~62% is made；The additive is water-coal-slurry described in Chinese patent 201310308280.8 point
What the preparation method of humic acid additives for water-coal slurry described in powder or Chinese patent 99115929.2 was prepared adds
Add agent；
(4) slurry and oxygen spray into gasification furnace through process burner, carry out gasification reaction, generate crude synthesis gas；
(5) crude synthesis gas is cooled by water again, washs and remove remaining fine ash and obtain clean synthesis gas.
The anoxybiotic pyrolysis oven is fast pyrogenation furnace or Chinese patent described in Chinese patent 201710312737.0
Revolving bed described in 201710352628.1.
The pressure-variable adsorption is using efficient PSA Gas separation described in Chinese patent 201610244216.1
Method.
The gasification furnace is single injector coal water slurry entrained flow bed gasification furnace described in Chinese patent 201410181236.X, or
Water-coal-slurry is used for described in gasification furnace described in Chinese patent 200810212104.3 or Chinese patent 201010218039.2
The coal slurry gasifier of gasification.
400 DEG C~800 DEG C of temperature in anoxybiotic pyrolysis oven, pressure 0.05 MPa~0.5 MPa.
1200~1500 DEG C of temperature in gasification furnace, the pressure MPa of 4.0 MPa~8.0, into the oxygen volume of gasification furnace
Flow and the ratio of slurry volume flow are 450~500.
The methane and other hydrocarbon gas that step (2) extracts return to the burning of anoxybiotic pyrolysis oven and provide heat, carbon dioxide
Recycling can further be purified.
The principle of the invention:
Bagasse is first oven-dried concurrent heat cracking through anoxybiotic all-radiant furnace (rotating disc type, can automatic feed) hyperthermia radiation and becomes to be pyrolyzed
Gas and water, oil, charcoal.Pyrolysis gas can extract rich through pressure-variable adsorption (multiple absorption process are connected, the device of each process double tower parallel connection)
Containing methane and hydrocarbon gas, used in the radiant tube burning for all-radiant furnace, carbon dioxide can be purified further as high-purity gas pin
It sells, refrigeration can also be compressed and obtain food-grade carbon-dioxide, dry ice.Remaining is the synthesis gas rich in carbon monoxide and hydrogen.
Pyrolytic carbon is tentatively crushed, and enters grinding machine with pyrolysis oil, water and charcoal slurry (adding additive in right amount) is made, further use air-bed
Flow pattern gasification furnace is gasified as the synthesis gas based on carbon monoxide and hydrogen.
The cardinal principle of gasification is exactly that charcoal slurry and the oxygen imperfect combustion in gasification furnace generate CO and H2Etc. effective gas and
CO2Equal by-products, main reaction equation are as follows:
Net reaction:
CmHn+(m+n/4)O2 = mCO2+n/2H2O
2C+O2 = CO
C+H2O = CO+H2
The application of the method for the present invention, has the advantage that
(1) compared with other biomass materials (forestry processing waste material, agricultural crop straw etc.), bagasse source is concentrated, yield is big,
Collection is simple, transportation radius is small, therefore using bagasse as waste synthesis gas, is easy to scale, quality is higher.
(2) it is first pyrolyzed, then gasifies through anoxybiotic, it is high to solve bagasse water content, it is difficult to the problem of direct gasification, institute
It obtains pyrolytic carbon to be easy to crush, and extracts high heat value gas reuse from pyrolysis gas and can reach heat self-sufficiency.
(3) sugarcane slag ingredient is relatively stable, and property is uniform, and the tar content for being pyrolyzed generation is less, using thermal cracking, gas
Change the technique that substep carries out, also avoids the makeup of similar biomass cracking gases and set generally existing tar excessively blocking is caused to set
The failures such as standby, catalyst carbon deposit.
(4) use 1200 DEG C or more of high-temperature entrained flow pure oxygen gasification, be practically free of nitrogen in synthesis gas, tar destruction compared with
Completely, synthesis gas quality is higher.Because using pure oxygen as gasifying agent, thus it is few containing impurity such as nitrogen in synthesis gas, and it is effective
Composition (carbon monoxide+hydrogen) content is up to 80% or more.Other common biomass gasifying furnaces be fixed bed (non-air flow bed) frequently with
Air is gasifying agent, although cost is relatively low, the oxygen afterburnt, remaining nitrogen remained in synthesis gas, and proportion compared with
Greatly, the effective content of synthesis gas is directly affected.The general effective ingredient (one of synthesis gas of such fixed bed biomass gasification furnace preparation
Carbonoxide and hydrogen) content be 30~60%.And the synthesis gas for using coal slurry gasifier (air flow bed) vaporizing system standby is effective
For composition generally 80~90%, quality is high.
(5) process " three wastes " discharge is few, energy conservation and environmental protection.The grease that pyrolysis generates is directly used in defibrination, carbon dioxide purity
Height is easily recycled, and gasifier slag is recycled as adsorbent material.
With reference to the accompanying drawings and examples to a kind of using bagasse as the side of the extensive producing synthesis gas of raw material of the present invention
The technical characteristic of method is further described.
Detailed description of the invention
Fig. 1: process flow chart of the invention.
Specific embodiment
Process description: bagasse is dried and is cracked through anoxybiotic pyrolysis oven (heat pipe radiation), is generated pyrolysis gas and water and is steamed
Gas, liquid separation after vapour, tar are cooled.Pyrolysis gas is rich in fuel gas (carbon monoxide, hydrogen, methane and other hydro carbons gas
Body), calorific value is higher, extracts methane and other hydrocarbon gas, carbon dioxide respectively through pressure-swing absorption apparatus, residue is
Synthesis gas rich in carbon monoxide and hydrogen.The radiant tube burning that gained methane and other hydrocarbon gas return to anoxybiotic pyrolysis oven mentions
Heating load, carbon dioxide can further purify recycling.Particle size is less than 10mm to pyrolytic carbon after crushing, (uses with pyrolysis grease
Lime adjustment water quality is greater than pH and 8) enters grinding machine together, while additive (additive amount about 3%), the pyrolytic carbon in grinding machine is added
Slurry is ground altogether with grease, additive, reaches the size distribution of requirement, and obtained pulp density is about 59~62%.Slurry is through high pressure
Shurry pump is sent into gasification furnace process burner.Slurry and oxygen (mentioning oxygen device from cryogenic air separation plant or pressure-variable adsorption) warp
Process burner sprays into gasification furnace, carries out gasification reaction, generates crude synthesis gas.Crude synthesis gas is cooled by water again, wash remove it is residual
The fine ash stayed obtains clean synthesis gas, and mixes with synthesis gas obtained by thermal cracking, uses for downstream project.Gasifier slag can be made
It is used for adsorbent material.
Embodiment 1: a method of using bagasse as the extensive producing synthesis gas of raw material, comprising the following steps:
(1) bagasse is first oven-dried concurrent heat cracking through anoxybiotic pyrolysis oven hyperthermia radiation and becomes pyrolytic carbon and contain to be pyrolyzed gas and water
The gas-liquid mixture of steam, pyrolysis oil；400 DEG C~800 DEG C of temperature in anoxybiotic pyrolysis oven, pressure 0.05 MPa~0.5 Mpa.
(2) gas-liquid mixture that step (1) obtains gas phase, liquid phase separation after refrigerated separation device is cooling obtains pyrolysis gas
With pyrolysis grease, pyrolysis gas extracts methane and other hydrocarbon gas, carbon dioxide through pressure-variable adsorption respectively, and residue is
Synthesis gas rich in carbon monoxide and hydrogen；The methane extracted and other hydrocarbon gas return to the burning of anoxybiotic pyrolysis oven and provide heat
Amount, carbon dioxide can further purify recycling.
(3) the pyrolysis grease lime regulating water quality that step (2) is isolated makes pH value be greater than 8, the pyrolysis that step (1) obtains
Size is less than 10mm to charcoal after crushing, enters grinding machine together with pyrolysis grease, while addition pyrolysis grease and pyrolysis into grinding machine
The additive of charcoal total weight 2~5% grinds to obtain the slurry that concentration is 59~62% by grinding machine；The additive is Chinese special
Humic acid water described in coal water slurry dispersing agent described in benefit 201310308280.8 or Chinese patent 99115929.2
The additive that the preparation method of slurry additive is prepared.
(4) slurry and oxygen spray into gasification furnace through process burner, carry out gasification reaction, generate crude synthesis gas；Gasification furnace
1200~1500 DEG C of interior temperature, the pressure MPa of 4.0 MPa~8.0, into the oxygen volume flow and slurry volume of gasification furnace
The ratio of flow is 450~500.
(5) crude synthesis gas is cooled by water again, washs and remove remaining fine ash and obtain clean synthesis gas (effective ingredient is general
80~90%).
Anoxybiotic pyrolysis oven described in the present embodiment is fast pyrogenation furnace described in Chinese patent 201710312737.0, or
Revolving bed described in Chinese patent 201710352628.1.
Pressure-variable adsorption described in the present embodiment is using efficient pressure-variable adsorption described in Chinese patent 201610244216.1
Gas separating method.
Gasification furnace described in the present embodiment is the coal water slurry entrained flow bed gas of single injector described in Chinese patent 201410181236.X
Change described in gasification furnace described in furnace or Chinese patent 200810212104.3 or Chinese patent 201010218039.2
Coal slurry gasifier for coal water slurry gasification.
The present embodiment day handles 1000~5000 tons of the sugarcane quantity of slag, synthesis gas yield 5 × 105~20 × 105Nm3/h。
Refrigerated separation device of the present invention can directly commercially, details are not described herein again its specific structure.
Claims (7)
1. a kind of using bagasse as the method for the extensive producing synthesis gas of raw material, it is characterised in that: the following steps are included:
(1) bagasse is first oven-dried concurrent heat cracking through anoxybiotic pyrolysis oven hyperthermia radiation and becomes pyrolytic carbon and contain to be pyrolyzed gas and water
The gas-liquid mixture of steam, pyrolysis oil；
(2) gas-liquid mixture that step (1) obtains gas phase, liquid phase separation after refrigerated separation device is cooling obtains pyrolysis gas and heat
Grease is solved, pyrolysis gas extracts methane and other hydrocarbon gas, carbon dioxide through pressure-variable adsorption respectively, and residue is to be rich in
The synthesis gas of carbon monoxide and hydrogen；
(3) step (2) is isolated pyrolysis grease adjusts pH value and is greater than 8, the pyrolytic carbon that step (1) obtains crush after with pyrolysis oil
Water enters grinding machine together, while into grinding machine, addition is pyrolyzed the additive of grease and pyrolytic carbon total weight 2~5%, grinds by grinding machine
The slurry that concentration is 59~62% is made；The additive is water-coal-slurry described in Chinese patent 201310308280.8 point
What the preparation method of humic acid additives for water-coal slurry described in powder or Chinese patent 99115929.2 was prepared adds
Add agent；
(4) slurry and oxygen spray into gasification furnace through process burner, carry out gasification reaction, generate crude synthesis gas；
(5) crude synthesis gas is cooled by water again, washs and remove remaining fine ash and obtain clean synthesis gas.
2. according to claim 1 a kind of using bagasse as the method for the extensive producing synthesis gas of raw material, it is characterised in that:
The anoxybiotic pyrolysis oven is fast pyrogenation furnace or Chinese patent described in Chinese patent 201710312737.0
Revolving bed described in 201710352628.1.
3. according to claim 1 or 2 a kind of using bagasse as the method for the extensive producing synthesis gas of raw material, feature exists
In: the pressure-variable adsorption is using efficient pressure-changeable gas-adsorption separation method described in Chinese patent 201610244216.1.
4. according to claim 1 or 2 a kind of using bagasse as the method for the extensive producing synthesis gas of raw material, feature exists
In: the gasification furnace is single injector coal water slurry entrained flow bed gasification furnace described in Chinese patent 201410181236.X, or China
Coal water slurry gasification is used for described in gasification furnace described in patent 200810212104.3 or Chinese patent 201010218039.2
Coal slurry gasifier.
5. according to claim 1 or 2 a kind of using bagasse as the method for the extensive producing synthesis gas of raw material, feature exists
In: 400 DEG C~800 DEG C of the temperature in anoxybiotic pyrolysis oven, pressure 0.05 MPa~0.5 MPa.
6. according to claim 1 or 2 a kind of using bagasse as the method for the extensive producing synthesis gas of raw material, feature exists
In 1200~1500 DEG C of the temperature in gasification furnace, the pressure MPa of 4.0 MPa~8.0, into gasification furnace oxygen volume flow and
The ratio of slurry volume flow is 450~500.
7. according to claim 1 a kind of using bagasse as the method for the extensive producing synthesis gas of raw material, it is characterised in that:
The methane and other hydrocarbon gas that step (2) extracts return to the burning of anoxybiotic pyrolysis oven and provide heat, and carbon dioxide can be further
Purification recycling.
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