CN103421687A - Two-section type semi-solid biomass biogas fermentation system and apparatus thereof - Google Patents
Two-section type semi-solid biomass biogas fermentation system and apparatus thereof Download PDFInfo
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- CN103421687A CN103421687A CN2012101665963A CN201210166596A CN103421687A CN 103421687 A CN103421687 A CN 103421687A CN 2012101665963 A CN2012101665963 A CN 2012101665963A CN 201210166596 A CN201210166596 A CN 201210166596A CN 103421687 A CN103421687 A CN 103421687A
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Abstract
The invention discloses a two-section type semi-solid anaerobic fermentation system for a semi-solid biomass with the TS between 15% and 20%, and an apparatus thereof.
Description
Technical field
The present invention relates to environment protection and resource reutilization field, relate to particularly a kind of two-part semi-solid state biomass marsh gas fermentation system and device.
Technical background
Biogas fermentation is called again anaerobic digestion, anaerobically fermenting and methane fermentation, refer to that organic substance (as human and animal excreta etc.) is under the condition of certain moisture, temperature and anaerobism, katabolism by of a great variety, enormous amount and different each quasi-microorganism of function, finally form the Biochemical processes of the complexity of the mixed gass (biogas) such as methane and carbon dioxide.
The biogas fermentation mode is according to the difference of dry matter content in material, generally can be divided into wet type fermentation (TS is 4%～10%) and dry type fermentation (TS is 25～40%), the biomass marsh gas fermentation engineering of domestic built operation at present generally adopts the wet type fermentation.Wet type fermentation materials good fluidity, fermentation materials mix with inoculum, mass-and heat-transfer is good, but required reactor volume is large, gas producing efficiency is low, dilution fermentation substrate water consumption is large, natural pond liquid treatment capacity is large, process costs is high; Dry-type anaerobic fermentation TS content is high, and high TS causes that input and output material is difficult, material transferring is difficult, heat and mass is inhomogeneous etc. and restricted the application of dry-type methane fermentation.The material that changing food waste in domestic waste, fruit and vegetable residue etc. can be degraded by microorganisms is through adopting ultra-high voltage squeezing device (squeeze dehydration unit inventor patent applied for, the number of applying for a patent: 201110549074.0) become the colloidal material, it is rich in low molecular weight organic acid, amine and the ammonia of carbohydrate, protein, fat and the above-mentioned nutritive substance generation of microbiological deterioration in rubbish, dry matter content (TS) is 15～25%, poor fluidity, be semi-solid colloidal, we are defined as semisolid by this class dry matter content at 15～25% material.Semi-solid biogas fermentation matrix flow is poor, has limited the mobility that participates in the microorganism of fermenting process, can not effectively carry out mass transfer and heat transfer.
Summary of the invention
The present invention has disclosed a kind of two-part semi-solid state biomass marsh gas fermentation system and device.Domestic waste obtains TS semi-solid state biomass between 15～25%, poor fluidity after ultra-high voltage extruding separating dry space from moist space.It is poor that semi-solid state biomass marsh gas fermented substrate flows, and limited the mobility that participates in the microorganism of fermenting process, can not effectively carry out mass transfer and heat transfer, so it is poor to adopt traditional anaerobic ferment devices to carry out the biogas fermentation effect.The present invention is in conjunction with the characteristic of semi-solid state material, innovate improvement on traditional wet type and dry type fermentation process, fermentation system is divided into to acidication and two stages of anaerobically fermenting, by the appropriate design fermentation unit, use fluid mechanics principle, adopt the natural pond liquid feed back inoculation method fermented, make it be more applicable for the fermentation of semi-solid state material, improve the biogas fermentation effect, shortened fermentation period, reduced construction and running cost.Fermentation system of the present invention mainly is comprised of stock chest, spiral pump, souring tank, mixing tank, fermentor tank, heating and temperature controlling device, input and output material Controlling System seven major parts, souring tank and fermentor tank tank body lower end are designed to be inverted the frustum shape, tank body is by appropriate design aspect ratio and material own wt, make material realize the piston flow running status of " first outer, last-in, last-out " in conveying and fermentation reaction process, saved traditional power whipping appts.The semi-solid state material enters souring tank from stock chest by spiral pump and starts acidifying.Between souring tank and fermentor tank, mixing tank is set, mixing tank input and output material end is the frustum shape, fully the material of acidifying and fermentation are introduced a fine variety liquid ratio with 1: 1 in mixing tank and are fully mixed inoculation, and compound utilizes the squeeze of spiral pump to clamp-on in fermentor tank to carry out anaerobically fermenting.After the scheduled time completes fermentation, material is pumped by spiral pump at the bottom of tank in the mode of piston flow, and a part enters mixing tank and introduces a fine variety, and a part is discharged by the discharging bypass.Whole methane fermentation system maintains 37 ℃ (± 2) by temperature control unit, and the turnover amount of material is by the control that links of magnetic flow meter and Controlling System.After the semi-solid state biomass complete biogas fermentation, the Digestive system of discharge enters anhydration system, adopts municipal sludge perforation condensation drying technique (by inventor's application authorized, the patent No.: 200810003740.5) carry out follow-up drying and other treatment.The acidifying gas produced in whole fermenting process and biogas enter deodoration system by the gas discharge hole of tank deck, (inventor has applied for and is authorized to reclaim elemental sulfur, the patent No.: 200810142572.8), biogas can be reclaimed recycling in addition.
The accompanying drawing explanation
Fig. 1 is two-part semi-solid state biomass marsh gas fermentation unit structure iron, specifically composed as follows:
1, spiral pump 2, tank support 3, stock chest 4, magnetic flow meter 5, pvc pipe 6, gas discharge hole 7, heat-preserving heating jacket 8, souring tank 9, souring tank thermometer hole 10, parallel feeding threeway 11, mixing tank 12, mixing tank thermometer hole 13, fermentor tank opening for feed 14, fermentor tank 15, hagioscope 16, fermentor tank thermometer hole 17, fermentor tank discharging threeway
Embodiment
Semi-solid state (TS is between 15～25%) biomass garbage through press dewatering enters into (3) by material conveying device, after (3) are filled with, open the storing spiral pump by Controlling System and material is pumped into to (8), by (4) the accurate-metering amount of pumping into; Material carries out acidifying in (8), carry out Heat preservation by (7), by temperature control unit, make the tank body temperature maintain all the time 37 ℃ (± 2), material carries out anaerobic hydrolysis-acidification in (8), every day, Biochemical Indexes was carried out in sampling, observe the changing conditions of material, when each index comprehensive data reach the acidifying requirement, acidifying of material is complete; Mode of motion according to piston flow, the acidifying at first of material at the bottom of tank, now next stage can be entered, open souring tank and fermentor tank spiral pump by robot control system(RCS) simultaneously, acidifying material and natural pond liquid are introduced a fine variety liquid and are entered (11) by (10) and carry out evenly mixing at 1: 1, material after mixing is clamp-oned (13) by the squeeze of pump and is entered (14), and the mixing tank temperature is carried out joint control by (7) and temperature-control device, remains on 37 ℃ (± 2); Mixture starts to carry out the anaerobic methane fermentation after entering (14), Guan Wen (16), (7) make it maintain all the time 37 ℃ (± 2) with temperature controlling system, by (15), can intuitively observe the material changing conditions in tank, every day, sampling was carried out the physical and chemical index monitoring to material, judge that according to this material changes and product natural pond situation, when peaking, aerogenesis can carry out collection analysis to biogas by (6), calculate methane content, when material reaches predetermined fermentation period, and, when low ebb appears in aerogenesis, illustrate that material enters the latter stage of fermenting; Mode of motion according to piston flow, fermentor tank substrate material enters the latter stage of fermenting at first, open spiral pump, by (17) the natural pond liquid that quantitatively the discharge vigor reduces, in order to make whole system keep material balance, make the methanobacteria load keep constant, the amount of discharging natural pond liquid is identical with the load of souring tank, wherein a part of natural pond liquid enters mixing tank and carries out the next cycle circulation, and another part is discharged from and enters biogas residue and biogas liquid and separate anhydration system.The acidifying gas that whole system produces and biogas are discharged and are entered deodoration system, methane recovery recycling by (6).Material of the every discharge of souring tank and fermentor tank need to carry out supplementing of same amount, to guarantee whole marsh gas fermentation processes periodic cycle.
Claims (7)
1. a two-part semi-solid state biomass marsh gas fermentation system and device, is characterized in that: the anaerobically fermenting of the preferred semi-solid state biomass of (1) described method; (2) described system is mainly by stock chest, spiral pump, souring tank, mixing tank, fermentor tank, heating and temperature controlling device, input and output material composition of the control system.
2. method according to claim 1, is characterized in that semi-solid biomass TS is between 15～25%, and poor fluidity, be the semi-solid state colloidal.
3. method according to claim 1, is characterized in that the plug flow regime operation with " first outer, last-in, last-out " in conveying and fermenting process of semi-solid state biomass, without traditional power whipping appts.
4. method according to claim 1, is characterized in that system adopts two-part, and the method for acidication and anaerobically fermenting segmentation is carried out biogas fermentation.
5. device according to claim 1, is characterized in that the souring tank lower end is designed to be inverted the frustum structure.
6. device according to claim 1, is characterized in that two sections of mixing tank input and output materials are designed to the frustum structure, and feedstock direction from the bottom to top, be take the pump squeeze as power.
7. device according to claim 1, is characterized in that the fermentor tank lower end is designed to be inverted the frustum structure.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106479877A (en) * | 2016-12-28 | 2017-03-08 | 宁夏天纵泓光余热发电技术股份有限公司 | Biogas preparation system |
| CN106520523A (en) * | 2016-12-28 | 2017-03-22 | 宁夏天纵泓光余热发电技术股份有限公司 | Biogas power generation system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102005025040A1 (en) * | 2005-05-30 | 2006-12-07 | Gesellschaft zur Förderung von Medizin-, Bio- und Umwelttechnologien e.V. | Preparation of methane-rich biogas comprises anaerobic fermentation of biomass and/or other substrates to raw fermentation gas, biochemical desulfurization of the gas, and photo-biological carbon dioxide reduction of the desulfurized gas |
| CN101704625A (en) * | 2009-11-27 | 2010-05-12 | 公主岭国家农业科技园区北方太阳能沼气研究所 | Automation solar energy biogas fermentation method and device |
| CN101830744A (en) * | 2010-05-18 | 2010-09-15 | 中国科学院广州能源研究所 | Method for simultaneously producing electric fertilizer by mixing and continuous dry fermentation of raw materials with complementary characteristics |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005025040A1 (en) * | 2005-05-30 | 2006-12-07 | Gesellschaft zur Förderung von Medizin-, Bio- und Umwelttechnologien e.V. | Preparation of methane-rich biogas comprises anaerobic fermentation of biomass and/or other substrates to raw fermentation gas, biochemical desulfurization of the gas, and photo-biological carbon dioxide reduction of the desulfurized gas |
| CN101704625A (en) * | 2009-11-27 | 2010-05-12 | 公主岭国家农业科技园区北方太阳能沼气研究所 | Automation solar energy biogas fermentation method and device |
| CN101830744A (en) * | 2010-05-18 | 2010-09-15 | 中国科学院广州能源研究所 | Method for simultaneously producing electric fertilizer by mixing and continuous dry fermentation of raw materials with complementary characteristics |
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| Title |
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| 张利平: "《液压传动系统及设计》", 31 August 2005 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106479877A (en) * | 2016-12-28 | 2017-03-08 | 宁夏天纵泓光余热发电技术股份有限公司 | Biogas preparation system |
| CN106520523A (en) * | 2016-12-28 | 2017-03-22 | 宁夏天纵泓光余热发电技术股份有限公司 | Biogas power generation system |
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| CN103421687B (en) | 2015-07-08 |
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