CN101884998A - Energy/resource coupling utilization technology of crop straws - Google Patents
Energy/resource coupling utilization technology of crop straws Download PDFInfo
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- CN101884998A CN101884998A CN2010102278846A CN201010227884A CN101884998A CN 101884998 A CN101884998 A CN 101884998A CN 2010102278846 A CN2010102278846 A CN 2010102278846A CN 201010227884 A CN201010227884 A CN 201010227884A CN 101884998 A CN101884998 A CN 101884998A
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- energy
- biogas
- anaerobic
- crop straws
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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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- 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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Abstract
Crop straws are one of the richest biomass energy sources in the world. At present, most straws are consumed by burning, padding, etc. Straw burning not only loses vast biological resources and causes environmental pollution, but also affects traffic safety and the existing fire hazards. The method solves the problems of resourceful treatment and comprehensive utilization of the crop straws and can realize comprehensive utilization of energy/resources of the crop straws, obtain the bioenergy including methane and activated carbon and increase the value in use of the crop straws.
Description
Technical field
The present invention relates to a kind of method that fully utilizes the crop straws for producing energy and resource, belong to the solid waste resource recovery processing technology field.Specifically, be to utilize the biogas of anaerobic fermented crop grass production as the energy, with the residual solid of stalk anaerobic fermentation---natural pond slag, preparation active carbon.Make full use of stalk resource.
Background technology
Agricultural crop straw is one of the abundantest in the world biomass energy source, and China's stalk resource is very abundant, nearly 700,000,000 tons of annual generation.Stalk is mainly by cellulose, hemicellulose, and cellular contents such as soluble protein, sugar are formed.Present most of stalk is with form consumption such as fuel, bedding and padding.Crop straw burning has not only lost a large amount of living resources, has caused environmental pollution, and a large amount of smog of the intensive generation in season of crop straw burning influence the disaster hidden-trouble of traffic safety and existence.Therefore, the processing of stalk is one of main resource environment problem of facing of China rural area with utilizing, and presses for the new approach that utilizes of seeking.
2007, the Ministry of Agriculture classified stalk production biogas technology first of China's agricultural and rural area " the ten big energy-conserving and emission-cutting technologies " as.Produce biogas with stalk, sufficient raw, widely distributed is not subjected to time and spatial constraints, does not produce pollutants such as tar and waste gas, can realize the circulation and efficient utilization of stalk.The problem of environmental pollution that this not only can solve a large amount of stalks of China, the biogas production that also can be China is opened up new bulk raw material source, for the guarantee of supplying raw materials at more extensive and wider popularization biogas, has very broad application prospects.
Active carbon is to be widely used in fields such as product manufacturing, therapeutic treatment and environmental protection, is indispensable product in the development of the national economy and the people's routine work.Traditional Preparation of Activated Carbon is many to be raw material with timber, charcoal, cocoanut shell, fruit stone, and along with the adjustment of national policy, the raw material of preparation active carbon is restricted, and price also is rise trend.Seek substitution material in the case and become the task of top priority.Utilize agricultural crop straw to prepare the contradiction that active carbon not only can solve a large amount of agricultural residue land occupations, stack nowhere, also realized turning waste into wealth, resource regeneration, the new source of having opened up the active carbon raw material.
By anaerobic fermentation, stalk can be changed into imflammable gas-biogas, both can solve ecological environment problem, also be expected to alleviate even improve current dependence to fossil energy.According to statistics, national stalk resource output in 2005 is 7.28 * 10
8Ton is removed and is used for having 3.995 * 10 approximately outside feed, the raw material of industry and the direct returning to farmland
8The ton stalk resource can be used as using energy source.If these stalks are all in order to produce biogas, then alternative 0.815 * 10
8The ton standard coal.
Comprehensive Utilization Ways from stalk, the biogas that produces with straw anaerobic digestion is energy source, prepare the principle that the energy/the comprehensive utilization of resources pattern meets the recycling economy minimizing, re-uses and recycles (being the 3R principle) of active carbon with the hydrolysis acidification residual solid, can realize that crops utilize low consumption, low emission and high efficiency target.Utilizing on the mode, realizing the stalk transformation of simple interest of conforming to the principle of simplicity to comprehensive utilization; On utilization mechanism, realize the transformation that stalk utilizes to commercialization from self-sufficient utilization; On management method, realize stalk from the transformation of low level management, to improve utilization of agricultural resources utilization efficient, to promoting rural economic development and increasing peasant income, the critical role of having improved the ecological environment and effect to scientific management.
Summary of the invention
The objective of the invention is to solve the problem of agricultural straw resource processing and utilization, a kind of method of fully, effectively utilizing stalk is provided, increase the value of agricultural crop straw.This method adopts the diphasic anaerobic technology in conjunction with microbial bacterial agent, Preparation of Activated Carbon technology agricultural crop straw to be handled, and can obtain bioenergy---biogas, and active carbon can be realized the energy/comprehensive utilization of resources of agricultural crop straw.
Specifically, the method for agricultural crop straw integrated treatment provided by the invention adopts the diphasic anaerobic technology in conjunction with microbial bacterial agent, Preparation of Activated Carbon technology agricultural crop straw to be fully utilized.At first adopt efficient straw hydrolysis microbial inoculum, agricultural crop straw is hydrolyzed, stalk after the processing enters TPAD technology, acid solution is as anaerobic methane production gas, and the hydrolysis acidification residual solid is concentrated to be used for preparing active carbon, realizes the coupling of the energy/utilization of resources of agricultural crop straw, open up the new way of straw utilization, increased the value of agricultural crop straw.
Microbial inoculum among the present invention can be one or more in bacterium, the fungi.
Fungi among the present invention can be one or more in wooden enzyme genus, aspergillus and the Penicillium.
The biogas sulfur content that agricultural crop straw hydrolyzate anaerobic fermentation produces among the present invention is at 25-300ppm, methane content 50-90%.
The volume yield rate of two-phase anaerobic reactor product bionethanation system is 0.6-1.0m among the present invention
3/ m
3D.
The active carbon of the preparation among the present invention is to be raw material, to pass through to add different active materials (as ZnCl with agricultural crop straw hydrolysed residue solid
2, phosphoric acid etc.) residual solid is carried out preliminary treatment, the biogas that utilizes anaerobic digestion to make is the energy, the heating charing.
Description of drawings
Fig. 1 agricultural crop straw energy/resource coupling utilizes technology
The specific embodiment
Give further detailed explanation below by embodiment to the present invention.
Embodiment 1: the preparation of active carbon
Raw material is handled: to the stalk residue clean, airing.Then, zinc chloride is made into the solution of about 50 Baume degrees.Through filtering, adjusting the pH value with hydrochloric acid again is 6, pours in the raw material in the ratio of 3-4 again, and promptly per hundred jin of raw materials add the liquor zinci chloridi that 300-400 jin is adjusted.Under the temperature conditions more than 40-50 ℃, flood, left standstill after stirring 5 hours, stir again and once left standstill again 5 hours, liquor zinci chloridi all is absorbed, as not being absorbed then time expand more entirely.
Charing and activation: the raw material that will mix is put into the airtight heating charing of retort, carbonization temperature 300-450 ℃ about 30-60 minute.Charing will be noted seeing naked light, also will constantly stir material, makes it to be heated evenly, cool to gradually below 100 ℃ and stir again thoroughly, guarantee that charing is even, sealing continuation charing again after the stirring, and be warmed to 400-500 ℃, sternly seal about 24 hours, or 500-600 ℃ was sealed 2-2.5 hour.Stirred once in per 15 minutes, and made the material activate and have activity, when charcoal is kermesinus, vegetables pine state, be cooled to gradually below 100 ℃, pour the cooling bath cooling into.If charing is also bad during blow-on, can continue airtight intensification charing again, until cooling.
Claims (7)
1. a method of utilizing the crop straws for producing energy and resource is characterized in that it being to utilize the diphasic anaerobic technology in conjunction with microbial bacterial agent, and the Preparation of Activated Carbon technology is produced biogas and active carbon.
2. method according to claim 1 is characterized in that at first adopting the hydrolysis microbial inoculum, and agricultural crop straw is hydrolyzed, and the hydrolyzate anaerobic fermentation is produced biogas, hydrolysis acidification residual solid, preparation active carbon.
3. Preparation of Activated Carbon according to claim 2 is characterized in that the biogas that utilizes anaerobic digestion to make is the energy, the heating charing.
4. microbial inoculum according to claim 1 can be one or more in bacterium, the fungi.
5. fungi according to claim 1 can be one or more in wooden enzyme genus, aspergillus and the Penicillium.
6. diphasic anaerobic technology according to claim 1, the biogas sulfur content that it is characterized in that producing be at 25-300ppm, methane content 50-90%.
7. diphasic anaerobic technology according to claim 1 is characterized in that the volume yield rate of two-phase anaerobic reactor product bionethanation system is 0.6-1.0m
3/ m
3D.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010102278846A CN101884998A (en) | 2010-07-16 | 2010-07-16 | Energy/resource coupling utilization technology of crop straws |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102278846A CN101884998A (en) | 2010-07-16 | 2010-07-16 | Energy/resource coupling utilization technology of crop straws |
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| CN101884998A true CN101884998A (en) | 2010-11-17 |
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| CN2010102278846A Pending CN101884998A (en) | 2010-07-16 | 2010-07-16 | Energy/resource coupling utilization technology of crop straws |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240264A (en) * | 2012-02-13 | 2013-08-14 | 中国科学院城市环境研究所 | Low-emission solid organic waste treatment system realizing methane and active carbon production |
| CN103255178A (en) * | 2013-05-02 | 2013-08-21 | 江南大学 | Method for comprehensively utilizing crop straw |
| CN104087326A (en) * | 2014-07-26 | 2014-10-08 | 安徽科技学院 | Method for preparing biochar by taking organic solid wastes of agriculture and forestry as raw materials in wet thermal cracking manner |
| CN105819423A (en) * | 2016-03-18 | 2016-08-03 | 常州大学 | Preparation method of rice straw biocarbon |
| CN106755258A (en) * | 2017-01-20 | 2017-05-31 | 福建农林大学 | A kind of method of comprehensive utilization of energy grass and marine alga slag |
| CN113264566A (en) * | 2021-06-30 | 2021-08-17 | 江南大学 | Method for synchronously realizing harmless treatment of azo dye and straw recycling treatment |
Citations (4)
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|---|---|---|---|---|
| JP3874590B2 (en) * | 2000-04-07 | 2007-01-31 | 株式会社クボタ | Sludge treatment method |
| CN101280324A (en) * | 2008-05-04 | 2008-10-08 | 徐跃 | Technological process for preparing ethanol and synthetic gasoline from plant straw |
| CN101629188A (en) * | 2009-08-11 | 2010-01-20 | 陈福库 | Soybean straw industrialization methane production and method for extracting cellulose and lignin |
| CN101696425A (en) * | 2009-10-23 | 2010-04-21 | 开化县农村能源办公室 | Method for producing marsh gas by fermentation of materials containing nitrogen and carbon |
-
2010
- 2010-07-16 CN CN2010102278846A patent/CN101884998A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3874590B2 (en) * | 2000-04-07 | 2007-01-31 | 株式会社クボタ | Sludge treatment method |
| CN101280324A (en) * | 2008-05-04 | 2008-10-08 | 徐跃 | Technological process for preparing ethanol and synthetic gasoline from plant straw |
| CN101629188A (en) * | 2009-08-11 | 2010-01-20 | 陈福库 | Soybean straw industrialization methane production and method for extracting cellulose and lignin |
| CN101696425A (en) * | 2009-10-23 | 2010-04-21 | 开化县农村能源办公室 | Method for producing marsh gas by fermentation of materials containing nitrogen and carbon |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103240264A (en) * | 2012-02-13 | 2013-08-14 | 中国科学院城市环境研究所 | Low-emission solid organic waste treatment system realizing methane and active carbon production |
| CN103240264B (en) * | 2012-02-13 | 2016-03-02 | 中国科学院城市环境研究所 | Have the low emission solid organic castoff treatment system of biogas and Activated Carbon Production concurrently |
| CN103255178A (en) * | 2013-05-02 | 2013-08-21 | 江南大学 | Method for comprehensively utilizing crop straw |
| CN104087326A (en) * | 2014-07-26 | 2014-10-08 | 安徽科技学院 | Method for preparing biochar by taking organic solid wastes of agriculture and forestry as raw materials in wet thermal cracking manner |
| CN104087326B (en) * | 2014-07-26 | 2016-06-22 | 安徽科技学院 | A kind of method preparing charcoal for raw material wet method thermal cracking with agricultural organic solid waste |
| CN105819423A (en) * | 2016-03-18 | 2016-08-03 | 常州大学 | Preparation method of rice straw biocarbon |
| CN106755258A (en) * | 2017-01-20 | 2017-05-31 | 福建农林大学 | A kind of method of comprehensive utilization of energy grass and marine alga slag |
| CN113264566A (en) * | 2021-06-30 | 2021-08-17 | 江南大学 | Method for synchronously realizing harmless treatment of azo dye and straw recycling treatment |
| CN113264566B (en) * | 2021-06-30 | 2022-12-13 | 江南大学 | Method for synchronously realizing harmless treatment of azo dye and straw recycling treatment |
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Application publication date: 20101117 |