CN101509015A - Upthrust flow stalk marsh gas fermentation process and apparatus - Google Patents
Upthrust flow stalk marsh gas fermentation process and apparatus Download PDFInfo
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- CN101509015A CN101509015A CNA2009100586534A CN200910058653A CN101509015A CN 101509015 A CN101509015 A CN 101509015A CN A2009100586534 A CNA2009100586534 A CN A2009100586534A CN 200910058653 A CN200910058653 A CN 200910058653A CN 101509015 A CN101509015 A CN 101509015A
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- fermentation
- stalk
- marsh gas
- 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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Abstract
The invention adopts marsh gas fermentation process, in which materials are fed in from the bottom part and discharged out of the upper part. The marsh gas fermentation process is in accordance to the characteristic that straw fermentation material floats after entering a fermentation device, and a comparatively ideal flow-pushing state can be achieved when the straw fermentation material runs in the device, so that extremely high gas production effect can be realized. The fermentation device adopts a way that gravity automatically discharges scum, so as to solve the problem of feeding and discharging materials. The process can be used for marsh gas project which takes straw as the only fermentation material or main fermentation material, and can also be applied for other marsh gas projects with high fermentation concentration.
Description
The present invention relates to a kind of stalk marsh gas fermentation process and device, particularly relating to stalk is the last plug-flow marsh gas fermentation process of main fermentation raw material and the vertical cylinder body fermentation unit that can slag tap in top.
(for example: corn stalk, wheat straw, sorghum straw, straw etc.) light specific gravity is floating shape to the stalk fermentation raw material more in water, and is all the more so when fermentation gas, and layering is obvious, mobile poor in device.It brings difficulty and engineering inefficiency to the input and output material of stalk marsh gas fermentation.In order to solve an input and output material difficult problem, adopt a batch zymotechnique to solve on the engineering, a plurality of fermentation unit promptly are set, ferment in turn and reload.For example (number of patent application: ZL2005100827231) " a kind of Apparatus for () and method therefor of dry type fermentation " just belongs to this type technology to patent of invention.Though it has solved the problem of input and output material difficulty, its facility complexity, cost height, operation inconvenience; Fluctuation of service, the expense height, engineering efficient is low, and the pond holds factor of created gase and only reaches 0.6m
3/ m
3.d.Another kind of covert terms of settlement is to be in the biogas engineering of main fermentation raw material with ight soil, adds the small portion stalk, and its zymotechnique adopts full hybrid technique mostly, is equipped with mechanical stirring device; It can realize 1.0～1.5m
3/ m
3.d pond holds factor of created gase.This technology is generally adopted in Europe.But making full use of of stalk is restricted.
The objective of the invention is to utilize the natural characteristics of stalk, design is fit to the technology and the device of its biogas fermentation, solution is only fermentation raw material with stalk or is the biogas engineering input and output material difficult problem of main fermentation raw material with stalk, and the low problem of fermentation efficiency, what the fermentation of realization stalk marsh gas was higher holds factor of created gase and raw material factor of created gase with the pond, and the high reliability of engineering operation and low cost.
Marsh gas fermentation process of the present invention is to be introduced into fermentation unit bottom beginning biogas fermentation through the stalk fermentation raw material of pulverizing, and stalk can float and form a buoyant layer; Charging each time subsequently all can form new buoyant layer below the buoyant layer formerly; Continuous increase along with the charging number of times, advance on the stalk not discontinue course, after after a while, when being pushed to the top process of device, finishes the stalk that early enters fermentation unit the biogas process of producing, then, fall into out funnel by self gravitation, discharge through water seal tank, finish the biogas fermentation whole process by discharge nozzle.
Fermentation unit of the present invention is the vertical cylinder body fermentation unit that is provided with the bottom feed top discharging of temperature raising and maintaining facility, vertical cylinder body center upper portion is established one and is gone out funnel, the funnel bottom connects a discharge nozzle, discharge nozzle is tiltedly worn barrel wall and is inserted in the water seal tank, go out funnel footpath suitable for reading greater than 1200mm, following bore is greater than 350mm, and the discharge nozzle caliber is greater than 350mm.The device top cover is the pyramid type pot cover, and the top cover gradient is greater than 45 °.
Accompanying drawing 1 is complete Upthrust flow stalk marsh gas fermentation engineering process flow sheet
The present invention has adopted the marsh gas fermentation process of plug-flow from bottom to top, complied with the characteristic that the stalk fermentation raw material floats naturally, make the more smooth and easy nature of technology operation, the motion of fermentation raw material in device reaches comparatively ideal plug-flow state, raw material the longest, the fermentation fullest will be taken the lead in discharging residence time, the not sufficient fermentation raw material of residence time deficiency, fermentation can not be discharged from, and fermentation raw material can artificially be controlled the residence time in device.Therefore higher pond be can obtain and factor of created gase and higher raw material factor of created gase held.It is easier that fermentation unit need not be established the whipping appts Operation and Maintenance, can realize permanent steady running.The scum silica frost of finishing fermentation is by the self gravitation self-emptying, and working cost is low.
The present invention is with daily output biogas 650m
3The stalk marsh gas engineering construction be that example is illustrated, the main design parameters that engineering adopts is: (1) pond holds factor of created gase: 1.0m
3/ m
3.d; (2) raw material factor of created gase: 0.35～0.40m
3/ kgTs; (3) organic loading rate: 2.5～3.0kgTs/m
3.d; (4) biogas fermentation temperature: 38 ℃ ± 2 ℃; (5) fermentation unit volume: 650m
3(6) cylinder blade diameter length ratio: 1: 2; (7) the pyramid type top cover gradient is 60 °; (8) go out funnel footpath 1.8m suitable for reading, following bore 0.6m; (9) discharging caliber φ 600mm; (10) charging caliber φ 160mm.
The design requirements of fermentation unit: cubic capacity 650m
3, cylinder diameter 7.2m, high 14.4m; Go out funnel and be installed on the cylinder center upper portion, funnel is suitable for reading to be on the same horizontal plane with cylindrical shell is suitable for reading, and end opening connects discharge nozzle, and discharge nozzle cylinder body wall athwart is inserted in the water seal tank; Setting from the preparing pool to the fermentation unit bottom, can be two-way walk pump, gate, the pipeline of material; If the escape pipe of φ 100mm; On device, establish three the temperature monitoring points in upper, middle and lower; Hot water boiler is set gives the facility of fermentation unit heat supply; Add thermal insulation layer efficiently for apparatus surface (except that the bottom surface); Add protective layer attractive in appearance in the thermal insulation layer outside; The ladder and the guardrail that arrive the device top are set.
Design variable requirement according to fermentation unit, and the requirement of complete Upthrust flow stalk marsh gas fermentation engineering technical process (seeing accompanying drawing 1), design each processing unit, arrange the mutual relationship and the total arrangement (comprising relative position and elevation) of each processing unit properly, good the Facilities Construction of biogas engineering.
Stalk marsh gas engineering operation main points:
(1) stalk pulverizes through 5mm sieve aperture pulverizer that to enter the straw powder storehouse stand-by;
(2) during charging, the straw powder amount that need is added from the straw powder storehouse drops into the preparing pool;
(3) add outer amount of water by 3 times that add the straw powder dry weight;
(4) add water and reenter preparing pool through water seal tank;
(5) auxiliary charging from fermentation unit bottom blowing liquid to preparing pool, its quantity can be advisable with pump in charging;
(6) starting whipping appts mixes straw powder and feed liquid;
(7) start spiral pump material is pumped into the fermentation unit bottom, finish fill process one time;
(8) move to the stalk slag (natural pond slag) at fermentation unit top,, enter in the water seal tank, utilize from the water seal tank outward transport again, finish the discharging process through discharge nozzle because the self gravitation effect falls into out funnel automatically;
(9) hot water boiler answers every day to the fermentation unit heat supply, and to guarantee 38 ℃ ± 2 ℃ leavening temperature, boiler oil can be a biogas that biogas engineering produces, and also can use other fuel;
(10) biogas that fermentation unit produces, flows to the user by the storage gas distributing system after the dehydration desulfurization and utilizes through refining plant from the biogas pipe.
Claims (2)
1. plug-flow marsh gas fermentation process, stalk plug-flow marsh gas fermentation process particularly, it is characterized in that the stalk fermentation raw material through pulverizing is introduced into fermentation unit bottom beginning biogas fermentation, stalk can float and form a buoyant layer, charging each time subsequently, form new buoyant layer below the buoyant layer formerly of capital, continuous increase along with the charging number of times, the stalk fermentation raw material can advance on the not discontinue course, after after a while, when being pushed to device top process, finishes the fermentation raw material that early enters fermentation unit the biogas process of producing; Fall into out funnel by self gravitation then, discharge through water seal tank, finish the biogas fermentation whole process by discharge nozzle.
2. biogas fermentation device that is provided with the temperature raising and maintaining facility, the vertical cylinder body fermentation unit of bottom feed top discharging particularly, it is characterized in that the cylinder center upper portion establishes one and go out funnel, the funnel bottom connects a discharge nozzle, discharge nozzle barrel wall athwart inserts in the water seal tank, the device top cover is the pyramid type pot cover, and the top cover gradient is greater than 45 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100586534A CN101509015A (en) | 2009-03-19 | 2009-03-19 | Upthrust flow stalk marsh gas fermentation process and apparatus |
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|---|---|---|---|
| CNA2009100586534A CN101509015A (en) | 2009-03-19 | 2009-03-19 | Upthrust flow stalk marsh gas fermentation process and apparatus |
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| CNA2009100586534A Pending CN101509015A (en) | 2009-03-19 | 2009-03-19 | Upthrust flow stalk marsh gas fermentation process and apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234605A (en) * | 2010-05-07 | 2011-11-09 | 刘慧敏 | Bent-pipe large-sized plastic anaerobic digester |
| CN102260713A (en) * | 2011-06-13 | 2011-11-30 | 农业部沼气科学研究所 | Vertical plug-flow type straw biogas fermentation method |
| CN102604817A (en) * | 2011-01-25 | 2012-07-25 | 农业部沼气科学研究所 | Resultant-force push-up flow anaerobic reactor |
| CN103451093A (en) * | 2013-08-28 | 2013-12-18 | 山东省农业科学院农业质量标准与检测技术研究所 | Spiral self-residue discharge biogas fermentation tank |
| CN103614288A (en) * | 2013-12-11 | 2014-03-05 | 山东省农业科学院农业资源与环境研究所 | High-solid anaerobic reaction device and method for organic garbage |
| CN107418880A (en) * | 2017-08-30 | 2017-12-01 | 博能盛诺(北京)生物质能源科技有限公司 | Stalk marsh gas feed arrangement, stalk marsh gas system and stalk feed process |
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| CN201033783Y (en) * | 2007-05-23 | 2008-03-12 | 南京工业大学 | Double-discharging polypropylene methane tank |
| CN101376896A (en) * | 2008-07-21 | 2009-03-04 | 胜利油田胜利动力机械集团有限公司3705010003197 | Dry type fermentation process and apparatus |
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2009
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| CN101376896A (en) * | 2008-07-21 | 2009-03-04 | 胜利油田胜利动力机械集团有限公司3705010003197 | Dry type fermentation process and apparatus |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234605A (en) * | 2010-05-07 | 2011-11-09 | 刘慧敏 | Bent-pipe large-sized plastic anaerobic digester |
| CN102604817A (en) * | 2011-01-25 | 2012-07-25 | 农业部沼气科学研究所 | Resultant-force push-up flow anaerobic reactor |
| CN102260713A (en) * | 2011-06-13 | 2011-11-30 | 农业部沼气科学研究所 | Vertical plug-flow type straw biogas fermentation method |
| CN103451093A (en) * | 2013-08-28 | 2013-12-18 | 山东省农业科学院农业质量标准与检测技术研究所 | Spiral self-residue discharge biogas fermentation tank |
| CN103451093B (en) * | 2013-08-28 | 2014-10-29 | 山东省农业科学院农业质量标准与检测技术研究所 | Spiral self-residue discharge biogas fermentation tank |
| CN103614288A (en) * | 2013-12-11 | 2014-03-05 | 山东省农业科学院农业资源与环境研究所 | High-solid anaerobic reaction device and method for organic garbage |
| CN103614288B (en) * | 2013-12-11 | 2015-04-08 | 山东省农业科学院农业资源与环境研究所 | High-solid anaerobic reaction device and method for organic garbage |
| CN107418880A (en) * | 2017-08-30 | 2017-12-01 | 博能盛诺(北京)生物质能源科技有限公司 | Stalk marsh gas feed arrangement, stalk marsh gas system and stalk feed process |
| CN107418880B (en) * | 2017-08-30 | 2023-11-03 | 博能盛诺(北京)生物质能源科技有限公司 | Straw biogas feeding device, straw biogas system and straw feeding method |
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Application publication date: 20090819 |