CN106753629A - A kind of method that utilization energy grass biogas residue prepares biological cracking gas - Google Patents
A kind of method that utilization energy grass biogas residue prepares biological cracking gas Download PDFInfo
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- CN106753629A CN106753629A CN201710041952.1A CN201710041952A CN106753629A CN 106753629 A CN106753629 A CN 106753629A CN 201710041952 A CN201710041952 A CN 201710041952A CN 106753629 A CN106753629 A CN 106753629A
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- 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
- C10L3/08—Production of synthetic natural gas
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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
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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
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
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- Processing Of Solid Wastes (AREA)
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Abstract
The invention provides a kind of method that utilization energy grass biogas residue prepares biological cracking gas, the preparation method comprises the following steps：Energy grass anaerobic methane fermentation process, biogas residue washing, biogas residue drying, biogas residue crushing, Pintsch process, thermal cracking Steam Dust, thermal cracking steam refrigerated separation, depickling, the biological cracking body drying and other steps of depickling.The present invention according to the energy grass biogas residue ash content of biogas fermentation it is very low the characteristics of, the step of eliminating in convenient source using a large amount of acid solution de-ash, greatly save the input of chemical reagent, saved cost.Present invention reduces the power consumption of pulverizer, and the pre-treatment steps such as steam explosion are not needed, saved the energy input during pretreatment of raw material.Energy grass biogas residue wood fibre cellulose content is high, and cellulose, hemicellulose, lignin ratio are suitable, and the not only rate of output of the biological cracking gas of present invention production is high, and quality is good.
Description
Technical field
The invention belongs to field of biological energy source, and in particular to a kind of utilization energy grass biogas residue prepares the side of biological cracking gas
Method.
Background technology
Energy grass includes annual or perennial, wood fibre cellulose content high, high yield, the draft energy of high photosynthesis efficiency
Plant, is the huge energy-source plant of potentiality to be exploited, it has also become one of primary raw material of biogas engineering.Energy grass biogas residue is further high
It is the important channel for improving biogas engineering economic benefit that value is developed.But it is direct that energy grass biogas residue typically makees organic fertilizer
Farmland is discharged into, economic benefit is not high.The biodegradable active ingredient for utilizing of energy grass biogas residue is very low, it is impossible to by biology
It is converted into bioenergy the method economical and efficient of fermentation, therefore it rarely has text in the further exploitation of field of biological energy source
Offer report.
Biological cracking gas refers to gaseous fuel of the biomass by generation after the restricted cracking of high temperature, raw in industry, agricultural
There is purposes widely in product.Biological cracking gas typically has timber, sawdust, agricultural crop straw to be prepared from, because of its raw material
Compact structure, preprocessing process energy consumption is big, and material composition is complex, and the biological cracking gas impurity of preparation is more, limits
Its application value.
The content of the invention
It is an object of the invention to provide a kind of method that utilization energy grass biogas residue prepares biological cracking gas, the method includes
Step in detail below：
（1）Fresh energy grass, dry energy grass or ensiling energy grass is crushed to less than 10 centimetres, carry out anaerobic methane fermentation,
Raw material holdup time in fermentation tank is normal temperature fermentation 30 ~ 60 days, middle temperature 35-40 DEG C of fermentation 18-45 days or 52 DEG C -57 DEG C of high temperature
Fermentation 8 ~ 22 days；
（2）After fermentation ends, by step（1）Energy grass biogas residue discharge after fermentation, drains biogas slurry, and biogas residue is immersed in weight 5 ~ 12
Times clear water in wash 3 ~ 5 times, in each washing process stir 3 ~ 8 times, energy marsh slag is fully infiltrated, the biogas slurry of discharge and
Cleaning solution is used for biogas fermentation or energy grass planting；
（3）By step（2）Energy grass biogas residue after washing is put into 45 ~ 65 DEG C of temperature, the acetic acid solution of volume fraction 0.8 ~ 1.4%
In, ultrasonically treated 20 ~ 50 minutes with 20 ~ 90KHz, biogas residue is then taken out, acetic acid solution is drained, then washed with clear water 3 ~ 5 times；
（4）Step（3）The energy grass biogas residue cleaned drains away the water, natural drying to 5 ~ 16wt% of moisture, then at 80 DEG C
~ 180 DEG C dry to 0.5 ~ 6wt% of moisture content；
（5）With 3000 ~ 6000 revs/min of high-speed cutting pulverizers by step（4）Dried energy grass biogas residue is crushed to
0.05 ~ 0.7 centimetre of fine powder；
（6）By step（5）The pyrolysis device of the energy grass biogas residue fine powder addition sealing, oxygen deprivation or anaerobic of gained carries out hot tearing
Solution, obtains thermal cracking steam, and thermal-cracking method is extremely fast thermal cracking or flash pyrolysis；
（7）By step（6）Gained thermal cracking steam is passed through dust arrester and carries out dust removal process, then is cooled down at 50 ~ 100 DEG C, point
From being gas and liquid；
（8）By step（7）Gas after the separation of gained delivers to spray column and removes sour gas, obtains depickling biology cracking gas；
（9）By step（8）The biological cracking body of the depickling of gained is dried treatment, removes vapor, obtains refined biometric cracking
Gas；
（10）By step（9）Gained refined biometric cracking gas is cooled to 15 ~ 50 DEG C, is passed through gas storage holder or gas-storing bag is preserved,
Or it is further processed into compressed gas or liquefaction gas.
The energy grass is hybrid Chinese pennisetum, thin stem hybrid Chinese pennisetum, purple napier grass, dwarf elephant grass, red napier grass, napier grass, herbage
Sugarcane, Jujun grasses, hybrid giant napier, Taiwan Herba Hedyotis cantonensis, Sorghum propinquum, sugar grass, giantreed, reed, class reed, spot thatch, that special grass, sudangrass, U.S.s
Continent Chinese pennisetum, imperatoria, Caulis Miscanthis floriduli, awns beanstalk, lemongrass, Spartina alterniflora, Value of Spartina Anglica it is therein one or more.
Step（6）Extremely fast thermal cracking process parameter：900 ~ 1200 DEG C of 10 ~ 50 DEG C/s of programming rate reaction temperatures, raw material
0.5 ~ 6s of holdup time；Flash pyrolysis technological parameter：850 ~ 1500 DEG C/s of programming rate, 600 ~ 1000 DEG C of reaction temperature is former
Material 0.2 ~ 1.2s of the holdup time.
The present invention have developed the efficient biology cracking gas production technology of complete set according to energy grass biogas residue property.Relatively
Production technology is had in current, advantage of the invention is that：
（1）The present invention according to the energy grass biogas residue ash content of biogas fermentation it is very low the characteristics of, eliminate in convenient source using a large amount of
The step of acid solution de-ash, the input of chemical reagent is greatlyd save, saved cost.
（2）Energy grass biogas residue quality is loose, easily crushes, present invention reduces the power consumption of pulverizer, and need not
The pre-treatment steps such as steam explosion, have saved the energy input during pretreatment of raw material.
（3）Energy grass biogas residue wood fibre cellulose content is high, and cellulose, hemicellulose, lignin ratio are suitable, the life of production
The not only rate of output of thing cracking gas is high, and quality is good.
（4）The present invention is worth biology very high using the discarded object energy grass biogas residue production commercialization discharged in biogas engineering
Cracking gas, is further application of the energy grass biogas residue in field of biological energy source, and the economic benefit of biogas engineering can be made to improve 18%
More than.
Specific embodiment
Below in conjunction with specific embodiment, the present invention will be further described, but the present invention is not limited only to these embodiments.
Embodiment 1
A kind of method that utilization energy grass biogas residue prepares biological cracking gas, including step in detail below：
（1）Fresh energy grass is crushed to less than 10 centimetres, anaerobic methane fermentation is carried out, raw material holdup time in fermentation tank is
Normal temperature fermentation 30 days；
（2）After fermentation ends, by step（1）Energy grass biogas residue discharge after fermentation, drains biogas slurry, and biogas residue is immersed in 5 times of weight
Clear water in wash 3 times, in each washing process stir 3 times, energy marsh slag is fully infiltrated, the biogas slurry and cleaning solution of discharge
For biogas fermentation；
(3) by step（2）Energy grass biogas residue after washing is put into temperature 45 C, the acetic acid solution of volume fraction 0.8%, is used
Ultrasonically treated 20 minutes of 20KHz, then takes out biogas residue, drains acetic acid solution, then is washed with clear water 3 times;
（4）Step（3）The energy grass biogas residue cleaned drains away the water, natural drying to moisture 5wt%, then in 80 DEG C of bakings
Do to moisture content 0.5wt%；
（5）With 3000 revs/min of high-speed cutting pulverizers by step（4）Dried energy grass biogas residue is crushed to 0.05 centimetre
Fine powder；
（6）By step（5）The energy grass biogas residue fine powder addition sealing of gained, the pyrolysis device of oxygen deprivation carry out thermal cracking, obtain
To thermal cracking steam, thermal-cracking method is extremely fast thermal cracking；
（7）By step（6）Gained thermal cracking steam is passed through dust arrester and carries out dust removal process, then is cooled down at 80 DEG C, is separated into
Gas and liquid；
（8）By step（7）Gas after the separation of gained delivers to spray column and removes sour gas, obtains the biological cracking body of depickling；
（9）By step（8）The biological cracking body of the depickling of gained is dried treatment, removes vapor, obtains refined biometric cracking
Gas；
（10）By step（9）Gained refined biometric cracking gas is cooled to 15 DEG C, is passed through gas storage holder and is preserved.
The energy grass is hybrid Chinese pennisetum.
Step（6）The extremely fast thermal cracking process parameter：10 DEG C/s of programming rate, 900 DEG C of reaction temperature, raw material is detained
Time 0.5s.
Embodiment 2
A kind of method that utilization energy grass biogas residue prepares biological cracking gas, including step in detail below：
（1）Less than 10 centimetres are crushed to energy grass is dried, anaerobic methane fermentation is carried out, raw material holdup time in fermentation tank is
35 DEG C of middle temperature is fermented 18 days；
（2）After fermentation ends, by step（1）Energy grass biogas residue discharge after fermentation, drains biogas slurry, and biogas residue is immersed in 10 times of weight
Clear water in wash 4 times, in each washing process stir 5 times, energy marsh slag is fully infiltrated, the biogas slurry and cleaning solution of discharge
For energy grass planting；
(3) by step（2）Energy grass biogas residue after washing is put into 55 DEG C of temperature, the acetic acid solution of volume fraction 1.0%, is used
Ultrasonically treated 30 minutes of 60KHz, then takes out biogas residue, drains acetic acid solution, then is washed with clear water 4 times;
（4）Step（3）The energy grass biogas residue cleaned drains away the water, natural drying to moisture 10wt%, then at 150 DEG C
Dry to moisture content 3wt%；
（5）With 4000 revs/min of high-speed cutting pulverizers by step（4）Dried energy grass biogas residue is crushed to 0.3 centimetre
Fine powder；
（6）By step（5）The energy grass biogas residue fine powder addition sealing of gained, the pyrolysis device of anaerobic carry out thermal cracking, obtain
To thermal cracking steam, thermal-cracking method is flash pyrolysis；
（7）By step（6）Gained thermal cracking steam is passed through dust arrester and carries out dust removal process, then is cooled down at 50 DEG C, is separated into
Gas and liquid；
（8）By step（7）Gas after the separation of gained delivers to spray column and removes sour gas, obtains the biological cracking body of depickling；
（9）By step（8）The biological cracking body of the depickling of gained is dried treatment, removes vapor, obtains refined biometric cracking
Gas；
（10）By step（9）Gained refined biometric cracking gas is cooled to 30 DEG C, is passed through gas-storing bag and is preserved.
The energy grass is purple napier grass.
Step（6）The flash pyrolysis technological parameter：1500 DEG C/s of programming rate, 1000 DEG C of reaction temperature, raw material is stagnant
Stay time 0.2s.
Embodiment 3
A kind of method that utilization energy grass biogas residue prepares biological cracking gas, including step in detail below：
（1）Ensiling energy grass is crushed to less than 10 centimetres, anaerobic methane fermentation is carried out, raw material holdup time in fermentation tank is
57 DEG C of high temperature ferments 8 days；
（2）After fermentation ends, by step（1）Energy grass biogas residue discharge after fermentation, drains biogas slurry, and biogas residue is immersed in 12 times of weight
Clear water in wash 5 times, in each washing process stir 8 times, energy marsh slag is fully infiltrated, the biogas slurry and cleaning solution of discharge
For biogas fermentation；
(3) by step（2）Energy grass biogas residue after washing is put into 65 DEG C of temperature, the acetic acid solution of volume fraction 1.4%, is used
Ultrasonically treated 50 minutes of 90KHz, then takes out biogas residue, drains acetic acid solution, then is washed with clear water 5 times;
（4）Step（3）The energy grass biogas residue cleaned drains away the water, natural drying to moisture 16wt%, then at 180 DEG C
Dry to moisture content 6wt%；
（5）With 6000 revs/min of high-speed cutting pulverizers by step（4）Dried energy grass biogas residue is crushed to 0.7 centimetre
Fine powder；
（6）By step（5）The energy grass biogas residue fine powder addition sealing of gained, the pyrolysis device of anaerobic carry out thermal cracking, obtain
To thermal cracking steam, thermal-cracking method is flash pyrolysis；
（7）By step（6）Gained thermal cracking steam is passed through dust arrester and carries out dust removal process, then is cooled down at 95 DEG C, is separated into
Gas and liquid；
（8）By step（7）Gas after the separation of gained delivers to spray column and removes sour gas, obtains the biological cracking body of depickling；
（9）By step（8）The biological cracking body of the depickling of gained is dried treatment, removes vapor, obtains refined biometric cracking
Gas；
（10）By step（9）Gained refined biometric cracking gas is cooled to 50 DEG C, is further processed into liquefaction gas.
The energy grass is Value of Spartina Anglica.
Step（6）The flash pyrolysis technological parameter：850 DEG C/s of programming rate, 600 DEG C of reaction temperature, raw material is detained
Time 1.2s.
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 (3)
1. a kind of method that utilization energy grass biogas residue prepares biological cracking gas, it is characterised in that including step in detail below：
（1）Fresh energy grass, dry energy grass or ensiling energy grass is crushed to less than 10 centimetres, carry out anaerobic methane fermentation,
Raw material holdup time in fermentation tank is normal temperature fermentation 30 ~ 60 days, middle temperature 35-40 DEG C of fermentation 18-45 days or 52 DEG C -57 DEG C of high temperature
Fermentation 8 ~ 22 days；
（2）After fermentation ends, by step（1）Energy grass biogas residue discharge after fermentation, drains biogas slurry, and biogas residue is immersed in weight 5 ~ 12
Times clear water in wash 3 ~ 5 times, in each washing process stir 3 ~ 8 times, energy marsh slag is fully infiltrated, the biogas slurry of discharge and
Cleaning solution is used for biogas fermentation or energy grass planting；
（3）By step（2）Energy grass biogas residue after washing is put into 45 ~ 65 DEG C of temperature, the acetic acid solution of volume fraction 0.8 ~ 1.4%
In, ultrasonically treated 20 ~ 50 minutes with 20 ~ 90KHz, biogas residue is then taken out, acetic acid solution is drained, then washed with clear water 3 ~ 5 times；
（4）Step（3）The energy grass biogas residue cleaned drains away the water, natural drying to 5 ~ 16wt% of moisture, then at 80 DEG C
~ 180 DEG C dry to 0.5 ~ 6wt% of moisture content；
（5）With 3000 ~ 6000 revs/min of high-speed cutting pulverizers by step（4）Dried energy grass biogas residue is crushed to
0.05 ~ 0.7 centimetre of fine powder；
（6）By step（5）The pyrolysis device of the energy grass biogas residue fine powder addition sealing, oxygen deprivation or anaerobic of gained carries out hot tearing
Solution, obtains thermal cracking steam, and thermal-cracking method is extremely fast thermal cracking or flash pyrolysis；
（7）By step（6）Gained thermal cracking steam is passed through dust arrester and carries out dust removal process, then is cooled down at 50 ~ 100 DEG C, point
From being gas and liquid；
（8）By step（7）Gas after the separation of gained delivers to spray column and removes sour gas, obtains depickling biology cracking gas；
（9）By step（8）The biological cracking body of the depickling of gained is dried treatment, removes vapor, obtains refined biometric cracking
Gas；
（10）By step（9）Gained refined biometric cracking gas is cooled to 15 ~ 50 DEG C, is passed through gas storage holder or gas-storing bag is preserved,
Or it is further processed into compressed gas or liquefaction gas.
2. the method that a kind of utilization energy grass biogas residue according to claims 1 prepares biological cracking gas, it is characterised in that：
The energy grass is hybrid Chinese pennisetum, thin stem hybrid Chinese pennisetum, purple napier grass, dwarf elephant grass, red napier grass, napier grass, Sugarcane grass, huge
Juncao, hybrid giant napier, Taiwan Herba Hedyotis cantonensis, Sorghum propinquum, sugar grass, giantreed, reed, class reed, spot thatch, that special grass, sudangrass, America wolf tails
One or more in grass, imperatoria, Caulis Miscanthis floriduli, awns beanstalk, lemongrass, Spartina alterniflora, Value of Spartina Anglica.
3. the method that a kind of utilization energy grass biogas residue according to claims 1 prepares biological cracking gas, it is characterised in that：
Step（6）The extremely fast thermal cracking process parameter：10 ~ 50 DEG C/s of programming rate, 900 ~ 1200 DEG C of reaction temperature, raw material
0.5 ~ 6s of holdup time；Flash pyrolysis technological parameter：850 ~ 1500 DEG C/s of programming rate, 600 ~ 1000 DEG C of reaction temperature is former
Material 0.2 ~ 1.2s of the holdup time.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1800307A (en) * | 2005-01-05 | 2006-07-12 | 中国科学院过程工程研究所 | Method and device for thermolysis preparing liquid fuel from steam explosion stalk fermented residue |
| CN103088073A (en) * | 2013-02-04 | 2013-05-08 | 北京化工大学 | Method for processing industrial wastes of edible vinegar through anaerobic digestion coupling pyrolysis technology |
-
2017
- 2017-01-20 CN CN201710041952.1A patent/CN106753629A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1800307A (en) * | 2005-01-05 | 2006-07-12 | 中国科学院过程工程研究所 | Method and device for thermolysis preparing liquid fuel from steam explosion stalk fermented residue |
| CN103088073A (en) * | 2013-02-04 | 2013-05-08 | 北京化工大学 | Method for processing industrial wastes of edible vinegar through anaerobic digestion coupling pyrolysis technology |
Non-Patent Citations (1)
| Title |
|---|
| 胡海涛等: ""生物质预处理技术及其对热解产物的影响综述"", 《生物质化学工程》 * |
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