CN106811487A - A kind of method of comprehensive utilization of energy grass and high protein kitchen garbage - Google Patents

A kind of method of comprehensive utilization of energy grass and high protein kitchen garbage Download PDF

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Publication number
CN106811487A
CN106811487A CN201710042146.6A CN201710042146A CN106811487A CN 106811487 A CN106811487 A CN 106811487A CN 201710042146 A CN201710042146 A CN 201710042146A CN 106811487 A CN106811487 A CN 106811487A
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grass
gained
biogas
kitchen garbage
high protein
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刘斌
林满红
肖正
赵慧
范锦琳
谢超
胡荣康
杨丽秋
赵超
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Fujian Agriculture and Forestry University
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Fujian Agriculture and Forestry University
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    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
    • C12P5/00—Preparation of hydrocarbons or halogenated hydrocarbons
    • C12P5/02—Preparation of hydrocarbons or halogenated hydrocarbons acyclic
    • C12P5/023—Methane
    • 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
    • C10B1/00—Retorts
    • 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
    • C10B53/08—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form in the form of briquettes, lumps and the like
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • C10L3/101—Removal of contaminants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • C10L3/101—Removal of contaminants
    • C10L3/102—Removal of contaminants of acid contaminants
    • C10L3/103—Sulfur containing contaminants
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • C10L3/101—Removal of contaminants
    • C10L3/102—Removal of contaminants of acid contaminants
    • C10L3/104—Carbon dioxide
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • C10L3/101—Removal of contaminants
    • C10L3/105—Removal of contaminants of nitrogen
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L3/00—Gaseous fuels; Natural gas; Synthetic natural gas obtained by processes not covered by subclass C10G, C10K; Liquefied petroleum gas
    • C10L3/06—Natural gas; Synthetic natural gas obtained by processes not covered by C10G, C10K3/02 or C10K3/04
    • C10L3/10—Working-up natural gas or synthetic natural gas
    • C10L3/101—Removal of contaminants
    • C10L3/106—Removal of contaminants of water
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2200/00—Components of fuel compositions
    • C10L2200/04—Organic compounds
    • C10L2200/0461—Fractions defined by their origin
    • C10L2200/0469—Renewables or materials of biological origin
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
    • 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
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

The invention discloses a kind of energy grass and the method for comprehensive utilization of high protein kitchen garbage, it is by after the screening filtering of high protein kitchen waste, gained solid refuse is crushed and mixed in proportion respectively with energy grass, gained liquid soup is to adjust water content after being subsequently adding kitchen garbage filtering, again after fermented acquisition biogas, biogas slurry and biogas residue, methane purification is obtained into biological flue gas, biogas slurry is circulated for fermenting, and biogas residue is further prepared into biological carbon.Of the invention is raw material co-production bio-natural gas and biological carbon effectively using kitchen garbage and energy grass, and not only raw material sources are extensive, reduce production cost, the pollution to environment are also effectively reduced, with significant economic benefit and ecological benefits.

Description

A kind of method of comprehensive utilization of energy grass and high protein kitchen garbage
Technical field
The invention belongs to field of biological energy source, and in particular to the comprehensive utilization side of a kind of energy grass and high protein kitchen garbage Method.
Background technology
Energy grass is the general designation of the careless class that a major class has biomass energy potentiality, and generally perennial grass family draft is planted Thing or fruticuli.The biomass of energy grass is huge, and rich in having lignocellulosic, cellulose and a hemicellulose, and its heat Value is also very high, but content of ashes is relatively low, it is considered to be most one of energy-source plant of exploitation prospect.Biogas is done with energy grass Fermentation raw material factor of created gase is high, but due in energy grass as material system carbon-nitrogen ratio it is higher, it is necessary to additional nitrogenous fertilizer, increased biogas The cost of fermentation, and fermentation system is easily acidified, and fermentation process is difficult to control.
At present, people are for the main method for taking landfill of the treatment of rubbish, but this can not be fully achieved the mesh for the treatment of , part resource can be caused to be lost in.Kitchen garbage account for very big proportion in present domestic waste.Such rubbish tool There is a moisture content very high, easily putrid and deteriorated, the severe contamination living environment of resident.High protein kitchen kitchen rubbish means meat The protein contents such as class, bean product kitchen garbage higher.High protein kitchen garbage, its Nitrogen content is high, during for biogas fermentation Fermentation is quick, but nitrogen is easily accumulated in easily causing zymotic fluid, and causing fermentation system to cross alkalization makes fermentation system cross alkalization, so that Inhibit the biogas output of raw material.
The content of the invention
It is an object of the invention to provide a kind of energy grass and the method for comprehensive utilization of high protein kitchen garbage, it is using high Albumen kitchen garbage and energy grass are raw material co-production bio-natural gas and biological carbon, not only reduce production cost, also The pollution reduced to environment of effect, with significant economic benefit and ecological benefits.
To achieve the above object, the present invention is adopted the following technical scheme that：
The method of comprehensive utilization of a kind of energy grass and high protein kitchen garbage, it is comprised the following steps：
（1）High protein kitchen garbage is carried out into screening filtering, solid refuse and liquid soup is obtained；
（2）Removing step（1）Bone, bone slag in gained solid refuse, plastics, metal, are then crushed to granularity and are less than 1cm；
（3）Gathered at the neat root of energy grass that 3 ~ 8 months will be grown, after being crushed to below granularity 10cm, it is 5 to dry to moisture ~ 25%, then it is crushed to below granularity 2cm；
（4）By step（2）Solid refuse and step after gained crushing（3）Energy grass after gained is crushed compares 5 by butt weight: 1~1:4 are well mixed；
（5）By step（1）Gained liquid soup is sprayed at step（4）On gained mixture, regulation mixture moisture is 65% ~ 85%, then in mixture surface plastic covering cloth, pre fermentation 3 ~ 8 days；
（6）Separately take step（1）Gained liquid soup or biogas slurry, by itself and step（5）Mixture after pre fermentation is well mixed, and makes Mixture water content is 85% ~ 96%, and stirring or homogeneous are into flow-like；
（7）By step（6）Gained fluid-like mixture adds marsh-gas fermentation tank to be fermented, and obtains biogas, biogas slurry and biogas residue；
（8）By step（7）Gained biogas is purified, to remove carbon dioxide, hydrogen sulfide, oxygen, nitrogenous gas, vapor, And methane concentration lifting is obtained into bio-natural gas to more than 96%；
（9）By step（7）Gained biogas slurry and biogas residue are separated, and biogas slurry is circulated for step（6）Treatment or be back to biogas fermentation Tank is fermented；The drying of gained biogas residue to water content below 15% after, with 3000 ~ 6000 revs/min of high-speed cutting pulverizer powder It is broken into the fine powder of 0.05 ~ 0.7cm；
（10）By step（9）Gained biogas residue fine powder is compressing, and being put into carbide furnace carries out anaerobic carbonization, and biology is obtained final product after cooling Carbon.
Protein content is higher than 30% in the high protein kitchen garbage.
The energy grass includes hybrid Chinese pennisetum, purple napier grass, dwarf elephant grass, red napier grass, napier grass high, Sugarcane grass, Jujun grasses, emperor Bamboo grass, Taiwan sweet napier grass, Sorghum propinquum, sugar grass, giantreed, reed, class reed, spot thatch, that special grass, sudangrass, American pennisetum alopecuroides, kings At least one in grass, Caulis Miscanthis floriduli, awns beanstalk, lemongrass, Spartina alterniflora, Value of Spartina Anglica.
Step（7）In fermentation system total solids content be 2 ~ 8wt%, fermentation temperature be 35 ~ 60 DEG C, system be pH6.5 ~ 8.5, the raw material holdup time is 8 ~ 20 days.
The advantage of the invention is that：
The invention provides a kind of method that energy grass and high protein kitchen garbage produce bio-natural gas, it not only solves existing There is produced problem in treatment kitchen garbage processing procedure, and be effectively combined and make use of energy grass to be provided commonly for preparing life Thing natural gas and biological carbon, alleviate energy crisis, and environmentally safe during production.
Specific embodiment
In order that content of the present invention easily facilitates understanding, with reference to specific embodiment to of the present invention Technical scheme is described further, but the present invention is not limited only to this.
Protein content is higher than 30% in high protein kitchen garbage used.
Embodiment 1
The method of comprehensive utilization of a kind of energy grass and high protein kitchen garbage, it is comprised the following steps：
（1）High protein kitchen garbage is carried out into screening filtering, solid refuse and liquid soup is obtained；
（2）Removing step（1）Bone, bone slag in gained solid refuse, plastics, metal, are then crushed to granularity and are less than 1cm；
（3）Gathered at the neat root of Jujun grasses that 3 ~ 8 months will be grown, after being crushed to below granularity 10cm, drying to moisture is 5%, then it is crushed to below granularity 2cm；
（4）By step（2）Solid refuse and step after gained crushing（3）Energy grass after gained is crushed compares 5 by butt weight: 1 is well mixed；
（5）By step（1）Gained liquid soup is sprayed at step（4）On gained mixture, the moisture for adjusting mixture is 65%, then in mixture surface plastic covering cloth, pre fermentation 3 days；
（6）Separately take step（1）Gained liquid soup or biogas slurry, by itself and step（5）Mixture after pre fermentation is well mixed, and makes Mixture water content is 85%, and stirring or homogeneous are into flow-like；
（7）By step（6）Gained fluid-like mixture adds marsh-gas fermentation tank to be fermented, and obtains biogas, biogas slurry and biogas residue；Its hair Total solids content is 2wt% in ferment system, and fermentation temperature is 35 DEG C, and system is pH 6.5, and the raw material holdup time is 20 days；
（8）By step（7）Gained biogas is extracted, to remove carbon dioxide, hydrogen sulfide, oxygen, nitrogenous gas, vapor, And methane concentration lifting is obtained into bio-natural gas to more than 96%；
（9）By step（7）Gained biogas slurry and biogas residue are separated, and biogas slurry is circulated for step（6）Treatment or be back to biogas fermentation Tank is fermented；After gained biogas residue drying to water content 6%, 0.05cm is ground into 6000 revs/min of high-speed cutting pulverizer Fine powder；
（10）By step（9）Gained biogas residue fine powder is compressing, and being put into carbide furnace carries out anaerobic carbonization, and biology is obtained final product after cooling Carbon.
Embodiment 2
The method of comprehensive utilization of a kind of energy grass and high protein kitchen garbage, it is comprised the following steps：
（1）High protein kitchen garbage is carried out into screening filtering, solid refuse and liquid soup is obtained；
（2）Removing step（1）Bone, bone slag in gained solid refuse, plastics, metal, are then crushed to granularity and are less than 1cm；
（3）To be gathered at the hybrid giant napier of growth 3 ~ 8 months, the neat root of Caulis Miscanthis floriduli, after being crushed to below granularity 10cm, dried to moisture Content is 16%, then is crushed to below granularity 2cm；
（4）By step（2）Solid refuse and step after gained crushing（3）Energy grass after gained is crushed compares 3 by butt weight: 2 are well mixed；
（5）By step（1）Gained liquid soup is sprayed at step（4）On gained mixture, the moisture for adjusting mixture is 70%, then in mixture surface plastic covering cloth, pre fermentation 5 days；
（6）Separately take step（1）Gained liquid soup or biogas slurry, by itself and step（5）Mixture after pre fermentation is well mixed, and makes Mixture water content is 90%, and stirring or homogeneous are into flow-like；
（7）By step（6）Gained fluid-like mixture adds marsh-gas fermentation tank to be fermented, and obtains biogas, biogas slurry and biogas residue；Its hair Total solids content is 6wt% in ferment system, and fermentation temperature is 40 DEG C, and system is pH 7.2, and the raw material holdup time is 10 days；
（8）By step（7）Gained biogas is extracted, to remove carbon dioxide, hydrogen sulfide, oxygen, nitrogenous gas, vapor, And methane concentration lifting is obtained into bio-natural gas to more than 96%；
（9）By step（7）Gained biogas slurry and biogas residue are separated, and biogas slurry is circulated for step（6）Treatment or be back to biogas fermentation Tank is fermented；After gained biogas residue drying to water content 3%, 0.1cm is ground into 5000 revs/min of high-speed cutting pulverizer Fine powder；
（10）By step（9）Gained biogas residue fine powder is compressing, and being put into carbide furnace carries out anaerobic carbonization, and biology is obtained final product after cooling Carbon.
Embodiment 3
The method of comprehensive utilization of a kind of energy grass and high protein kitchen garbage, it is comprised the following steps：
（1）High protein kitchen garbage is carried out into screening filtering, solid refuse and liquid soup is obtained；
（2）Removing step（1）Bone, bone slag in gained solid refuse, plastics, metal, are then crushed to granularity and are less than 1cm；
（3）To be gathered at the hybrid giant napier of growth 3 ~ 8 months, giantreed, the neat root of Spartina alterniflora, after being crushed to below granularity 10cm, done Dry is 25% to moisture, then is crushed to below granularity 2cm；
（4）By step（2）Solid refuse and step after gained crushing（3）Energy grass after gained is crushed compares 1 by butt weight: 4 are well mixed；
（5）By step（1）Gained liquid soup is sprayed at step（4）On gained mixture, the moisture for adjusting mixture is 85%, then in mixture surface plastic covering cloth, pre fermentation 8 days；
（6）Separately take step（1）Gained liquid soup or biogas slurry, by itself and step（5）Mixture after pre fermentation is well mixed, and makes Mixture water content is 96%, and stirring or homogeneous are into flow-like；
（7）By step（6）Gained fluid-like mixture adds marsh-gas fermentation tank to be fermented, and obtains biogas, biogas slurry and biogas residue；Its hair Total solids content is 8wt% in ferment system, and fermentation temperature is 60 DEG C, and system is pH 8.5, and the raw material holdup time is 8 days；
（8）By step（7）Gained biogas is extracted, to remove carbon dioxide, hydrogen sulfide, oxygen, nitrogenous gas, vapor, And methane concentration lifting is obtained into bio-natural gas to more than 96%；
（9）By step（7）Gained biogas slurry and biogas residue are separated, and biogas slurry is circulated for step（6）Treatment or be back to biogas fermentation Tank is fermented；After gained biogas residue drying to water content 4%, 0.7cm is ground into 3000 revs/min of high-speed cutting pulverizer Fine powder；
（10）By step（9）Gained biogas residue fine powder is compressing, and being put into carbide furnace carries out anaerobic carbonization, and biology is obtained final product after cooling Carbon.
Of the invention is raw material co-production bio-natural gas effectively using high protein kitchen garbage and energy grass, and prepares life Thing carbon, not only extensively, low production cost is also effectively reduced the pollution to environment to raw material sources, with significant economic benefit And ecological benefits.
The foregoing is only presently preferred embodiments of the present invention, all impartial changes done according to scope of the present invention patent with Modification, should all belong to covering scope of the invention.

Claims (4)

1. the method for comprehensive utilization of a kind of energy grass and high protein kitchen garbage, it is characterised in that：Comprise the following steps：
（1）High protein kitchen garbage is carried out into screening filtering, solid refuse and liquid soup is obtained；
（2）Removing step（1）Bone, bone slag in gained solid refuse, plastics, metal, are then crushed to granularity and are less than 1cm；
（3）Gathered at the neat root of energy grass that 3 ~ 8 months will be grown, after being crushed to below granularity 10cm, it is 5 to dry to moisture ~ 25%, then it is crushed to below granularity 2cm；
（4）By step（2）Solid refuse and step after gained crushing（3）Energy grass after gained is crushed compares 5 by butt weight: 1~1:4 are well mixed；
（5）By step（1）Gained liquid soup is sprayed at step（4）On gained mixture, regulation mixture moisture is 65% ~ 85%, then in mixture surface plastic covering cloth, pre fermentation 3 ~ 8 days；
（6）Separately take step（1）Gained liquid soup or biogas slurry, by itself and step（5）Mixture after pre fermentation is well mixed, and makes Mixture water content is 85% ~ 96%, and stirring or homogeneous are into flow-like；
（7）By step（6）Gained fluid-like mixture adds marsh-gas fermentation tank to be fermented, and obtains biogas, biogas slurry and biogas residue；
（8）By step（7）Gained biogas is purified, to remove carbon dioxide, hydrogen sulfide, oxygen, nitrogenous gas, vapor, And methane concentration lifting is obtained into bio-natural gas to more than 96%；
（9）By step（7）Gained biogas slurry and biogas residue are separated, and biogas slurry is circulated for step（6）Treatment or be back to biogas fermentation Tank is fermented；Biogas residue drying to water content below 15% after, 3000 ~ 6000 revs/min of high speeds are ground into the thin of 0.05 ~ 0.7cm Powder；
（10）By step（9）Gained biogas residue fine powder is compressing, and being put into carbide furnace carries out anaerobic carbonization, and biology is obtained final product after cooling Carbon.
2. according to claims 1 energy grass and high protein kitchen garbage method of comprehensive utilization, it is characterised in that：It is described Protein content is higher than 30% in high protein kitchen garbage.
3. according to claims 1 energy grass and high protein kitchen garbage method of comprehensive utilization, it is characterised in that：It is described Energy grass includes hybrid Chinese pennisetum, purple napier grass, dwarf elephant grass, red napier grass, napier grass high, Sugarcane grass, Jujun grasses, hybrid giant napier, Taiwan sweet Napier grass, Sorghum propinquum, sugar grass, giantreed, reed, class reed, spot thatch, that special grass, sudangrass, American pennisetum alopecuroides, imperatoria, Caulis Miscanthis floriduli, At least one in awns beanstalk, lemongrass, Spartina alterniflora, Value of Spartina Anglica.
4. according to claims 1 energy grass and high protein kitchen garbage method of comprehensive utilization, it is characterised in that：Step （7）Total solids content is 2 ~ 8wt% in fermentation system, and fermentation temperature is 35 ~ 60 DEG C, and system pH is 6.5 ~ 8.5, when raw material is detained Between be 8 ~ 20 days.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109761215A (en) * 2019-03-11 2019-05-17 大连理工大学 A kind of preparation method of the conductive porous carbon material of kitchen garbage base complex defect type
CN111876444A (en) * 2020-06-24 2020-11-03 华南农业大学 Enhanced gas production method for co-fermentation of kitchen waste and hybrid pennisetum and application thereof
CN112044450A (en) * 2020-07-17 2020-12-08 昆明理工大学 Acid-base bifunctional biomass carbon-based catalyst and preparation method thereof

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Application publication date: 20170609