CN101343641A - Marsh gas fermentation technique with calcium carbonate as buffering agent for centralized air feed - Google Patents
Marsh gas fermentation technique with calcium carbonate as buffering agent for centralized air feed Download PDFInfo
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- CN101343641A CN101343641A CNA2008100129426A CN200810012942A CN101343641A CN 101343641 A CN101343641 A CN 101343641A CN A2008100129426 A CNA2008100129426 A CN A2008100129426A CN 200810012942 A CN200810012942 A CN 200810012942A CN 101343641 A CN101343641 A CN 101343641A
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- fermentation
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- lime carbonate
- calcium carbonate
- biogas
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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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- Micro-Organisms Or Cultivation Processes Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
Abstract
The invention relates to a biogas fermentation process, in particular to a biogas fermentation process which adopts calcium carbonate as a buffer agent to centrally supply gas. The process comprises the following steps: a raw material is filled in an acidulating tank for fermentation and acidification, during or after the acidification, the calcium carbonate is added and evenly agitated, and the acidified raw material after being agitated and heavy calcium carbonate are fed into a biogas fermentation cylinder. The invention has the advantages that the Ph value of fermentation liquor is steadily maintained between neutral and alkalescence through maintaining steady fermentation environment, and the Ph value of the fermentation liquor in the biogas producing process can be maintained to change the specific density of the raw material, so the fermentation situation of the raw material which is smaller in specific density and easily to be incrusted such as cornstalk can be improved; in addition, the calcium carbonate is easily obtained, and the price is low, so the calcium carbonate is the cheapest and the most practical substitute. Macromolecular substances such as cellulose, lignin and pectin can be hydrolyzed into micro molecular substances which can be easily used, and more fermentable substances can be generated in fermentation substrates to generate more biogas and to improve the yield of the biogas without incrustation phenomenon.
Description
Technical field
The present invention relates to a kind of marsh gas fermentation process, relating in particular to a kind of is the marsh gas fermentation process of buffer reagent central gas supply with lime carbonate.
Background technology
Because producing the raw material of biogas is livestock and poultry manure, straw, domestic refuse or its mixture, frequent aerogenesis is undesired when fermentation, easy knot lid during fermentation gas in retort, the organic acid that fermentation produces influence aerogenesis quality and aerogenesis speed, and has and exist macromolecular substance such as Mierocrystalline cellulose, xylogen, pectin to be difficult for decomposition in some raw materials.
Summary of the invention
To the invention provides a kind of be the marsh gas fermentation process of buffer reagent central gas supply with lime carbonate in order to solve the problems of the technologies described above, purpose raises its PH with the organic acid of raw material in acidization in being, keep stable yeasting, make the macromolecular substance in the raw material be hydrolyzed into the small molecules that easily is utilized, reduce production costs.
For reaching above-mentioned purpose the present invention is the marsh gas fermentation process of buffer reagent central gas supply with lime carbonate, it is characterized in that comprising the steps: raw material put into and carry out fermentative acidification in the acidification pool, after acidifying while or acidifying, add lime carbonate and evenly stir, acidifying raw material after stirring and water-ground limestone are dropped in the marsh-gas fermentation tank.
Described in acidification pool fermentative acidification be divided into the batch fermentation acidifying and the acidifying of continuously fermenting.
The weight of described adding lime carbonate is the 0.1-5% of raw material.
Described cellulase and the polygalacturonase of in acidification pool, dropping into when raw material is put into acidification pool.
The weight of described cellulase and polygalacturonase is the 0.05-0.1% of raw material.
Described cellulase and polygalacturonase weight proportion are 1: 0.1-0.5.
Described raw material is one or more mixtures in straw, cow dung, pig manure or the apple residue.
Advantageous effect of the present invention: adding lime carbonate during the fermentation is buffer reagent, keep stable yeasting, the lime carbonate surge capability is strong, not only can in and the lactic acid that produces in the acidification technique before fermentation, organic acids such as acetic acid raise pH value, make the pH value of its fermented liquid steadily maintain neutral to weakly alkaline, also can keep the pH value that produces biogas process fermented liquid, simultaneously because lime carbonate proportion is bigger, with can change raw material proportion after the raw material fusion, can improve the easily fermentation state of knot lid such as less raw material of some proportion such as straw, lime carbonate is easy to get in addition, and is cheap almost not than its more cheap more practical substitute.Be difficult to the material that decomposes and utilize owing to contain a large amount of Mierocrystalline celluloses, xylogen, pectin etc. in raw material straw, ight soil or the agricultural avocation waste of biogas fermentation, in acidization, add a kind of zymin with cellulase and polygalacturonase, make macromolecular substance such as its Mierocrystalline cellulose, xylogen, pectin be hydrolyzed into the small molecules that easily is utilized, but make and produce more fermented material in its fermentation substrate, produce more biogas, improve the productive rate of biogas, do not have knot and cover phenomenon.
Embodiment
Embodiment 1
With lime carbonate is the marsh gas fermentation process of buffer reagent central gas supply, comprise the steps: 1000 kilograms of straws are put into and carry out fermentative acidification in the acidification pool, fermentation is the batch fermentation acidifying in acidification pool, adding 5 kilograms of water-ground limestones to acidification pool after acidifying evenly stirs, to ferment the management of fermenting normally in straw after stirring and the water-ground limestone input marsh-gas fermentation tank.
Embodiment 2
With lime carbonate is the marsh gas fermentation process of buffer reagent central gas supply, comprise the steps: 1000 kilograms put into continuously through straw, cow dung and the pig manures pulverized and carry out fermentative acidification in the acidification pool, fermentation is the acidifying of continuously fermenting in acidification pool, in fermentative acidification 50 kilograms of water-ground limestones being flowed adduction in acidification pool evenly stirs, to ferment the management of fermenting normally in the straw after stirring, cow dung, pig manure and the water-ground limestone input marsh-gas fermentation tank.
Embodiment 3
With lime carbonate is the marsh gas fermentation process of buffer reagent central gas supply, comprise the steps: 1000 kilograms put into continuously through cow dungs and pig manure and carry out fermentative acidification in the acidification pool, fermentation is the batch fermentation acidifying in acidification pool, adding 25 kilograms of water-ground limestones to acidification pool in fermentative acidification evenly stirs, to ferment the management of fermenting normally in the cow dung after stirring, pig manure and the water-ground limestone input marsh-gas fermentation tank.
Embodiment 4
With lime carbonate is the marsh gas fermentation process of buffer reagent central gas supply, comprise the steps: the cellulase of 1000 kilograms of straws and 1 kilogram and polygalacturonase put into and carry out fermentative acidification in the acidification pool, the proportioning of cellulase and polygalacturonase is 1: 0.4, fermentation is the batch fermentation acidifying in acidification pool, adding 15 kilograms of light calcium carbonates to acidification pool after acidifying evenly stirs, to ferment the management of fermenting normally in straw after stirring and the light calcium carbonate input marsh-gas fermentation tank.
Embodiment 5
With lime carbonate is the marsh gas fermentation process of buffer reagent central gas supply, comprise the steps: cellulase, the polygalacturonase of the straw of 1000 kilograms of pulverizing, cow dung, pig manure and 0.8 kilogram put into and carry out fermentative acidification in the acidification pool, the proportioning of cellulase and polygalacturonase is 1: 0.1, fermentation is the batch fermentation acidifying in acidification pool, adding 1 kilogram of water-ground limestone to acidification pool after acidifying evenly stirs, to ferment the management of fermenting normally in the straw after stirring, cow dung, pig manure and the water-ground limestone input marsh-gas fermentation tank.
Embodiment 6
With lime carbonate is the marsh gas fermentation process of buffer reagent central gas supply, comprise the steps: cellulase, the polygalacturonase of 1000 kilograms of cow dungs, pig manure and 0.5 kilogram put into and carry out fermentative acidification in the acidification pool, the proportioning of cellulase and polygalacturonase be 1: 0.3 in acidification pool fermentation for the batch fermentation acidifying, adding 8 kilograms of water-ground limestones to acidification pool after acidifying evenly stirs, to ferment the management of fermenting normally in the cow dung after stirring, pig manure and the water-ground limestone input marsh-gas fermentation tank.
Embodiment 7
With lime carbonate is the marsh gas fermentation process of buffer reagent central gas supply, comprise the steps: cellulase, the polygalacturonase of 1000 kilograms of cow dungs, apple residue and 0.7 kilogram put into and carry out fermentative acidification in the acidification pool, the proportioning of cellulase and polygalacturonase is that fermentation is the batch fermentation acidifying in 1: 0.5 acidification pool, adding 30 kilograms of water-ground limestones to acidification pool after acidifying evenly stirs, to ferment the management of fermenting normally in the cow dung after stirring, pig manure and the water-ground limestone input marsh-gas fermentation tank.
Claims (7)
1, with lime carbonate is the marsh gas fermentation process of buffer reagent central gas supply, it is characterized in that comprising the steps: raw material put into and carry out fermentative acidification in the acidification pool, after acidifying while or acidifying, add lime carbonate and evenly stir, acidifying raw material after stirring and water-ground limestone are dropped in the marsh-gas fermentation tank.
2, according to claim 1 is the marsh gas fermentation process of buffer reagent central gas supply with lime carbonate, it is characterized in that described in acidification pool fermentative acidification be divided into the batch fermentation acidifying and the acidifying of continuously fermenting.
3, according to claim 1 is the marsh gas fermentation process of buffer reagent central gas supply with lime carbonate, and the weight that it is characterized in that described adding lime carbonate is the 0.1-5% of raw material.
4, according to claim 1 is the marsh gas fermentation process of buffer reagent central gas supply with lime carbonate, it is characterized in that described cellulase and the polygalacturonase of dropping in acidification pool when raw material is put into acidification pool.
5, according to claim 1 is the marsh gas fermentation process of buffer reagent central gas supply with lime carbonate, and the weight that it is characterized in that described cellulase and polygalacturonase is the 0.05-0.1% of raw material.
6, according to claim 5 is the marsh gas fermentation process of buffer reagent central gas supply with lime carbonate, it is characterized in that described cellulase and polygalacturonase proportioning are 1: 0.1-0.5.
7, according to claim 1 is the marsh gas fermentation process of buffer reagent central gas supply with lime carbonate, it is characterized in that described raw material is one or more mixtures in straw, cow dung, pig manure or the apple residue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100129426A CN101343641A (en) | 2008-08-26 | 2008-08-26 | Marsh gas fermentation technique with calcium carbonate as buffering agent for centralized air feed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100129426A CN101343641A (en) | 2008-08-26 | 2008-08-26 | Marsh gas fermentation technique with calcium carbonate as buffering agent for centralized air feed |
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|---|---|
| CN101343641A true CN101343641A (en) | 2009-01-14 |
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| CNA2008100129426A Pending CN101343641A (en) | 2008-08-26 | 2008-08-26 | Marsh gas fermentation technique with calcium carbonate as buffering agent for centralized air feed |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103667101A (en) * | 2013-09-26 | 2014-03-26 | 中国科学院成都生物研究所 | Compound biological agent for enabling acidified marsh gas fermentation system to restore gas production and preparation method thereof |
| CN103898164A (en) * | 2014-04-01 | 2014-07-02 | 江西理工大学 | Method for improving biogas yield and producing composite function organic fertilizer |
| CN111647631A (en) * | 2020-06-30 | 2020-09-11 | 东北农业大学 | Method for preparing methane by utilizing straw anaerobic fermentation |
-
2008
- 2008-08-26 CN CNA2008100129426A patent/CN101343641A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103667101A (en) * | 2013-09-26 | 2014-03-26 | 中国科学院成都生物研究所 | Compound biological agent for enabling acidified marsh gas fermentation system to restore gas production and preparation method thereof |
| CN103667101B (en) * | 2013-09-26 | 2015-07-15 | 中国科学院成都生物研究所 | Compound biological agent for enabling acidified marsh gas fermentation system to restore gas production and preparation method thereof |
| CN103898164A (en) * | 2014-04-01 | 2014-07-02 | 江西理工大学 | Method for improving biogas yield and producing composite function organic fertilizer |
| CN103898164B (en) * | 2014-04-01 | 2017-04-12 | 江西理工大学 | Method for improving biogas yield and producing composite function organic fertilizer |
| CN111647631A (en) * | 2020-06-30 | 2020-09-11 | 东北农业大学 | Method for preparing methane by utilizing straw anaerobic fermentation |
| CN111647631B (en) * | 2020-06-30 | 2021-05-14 | 东北农业大学 | Method for preparing methane by utilizing straw anaerobic fermentation |
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Open date: 20090114 |