CN102864073B - Device and method for dry-wet co-production of hydrogen and methane from kitchen waste - Google Patents
Device and method for dry-wet co-production of hydrogen and methane from kitchen waste Download PDFInfo
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- CN102864073B CN102864073B CN201210355774.7A CN201210355774A CN102864073B CN 102864073 B CN102864073 B CN 102864073B CN 201210355774 A CN201210355774 A CN 201210355774A CN 102864073 B CN102864073 B CN 102864073B
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- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/02—Photobioreactors
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- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/04—Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
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- C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
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Abstract
一种厨余垃圾干湿联产氢气与甲烷的组合装置，包括湿热预处理反应器、垃圾混匀输送装置、分室耦合生物制氢反应器、膨胀颗粒污泥床反应器、管道式光生物反应器、高吸附性能储气装置、气体纯化器等。厨余垃圾经湿热预处理后通过绞龙输送至分室耦合生物反应器进行产氢，富氢气体经纳米陶瓷镀膜滚轴输送至氢气纯化器，液相代谢产物进入EGSB反应器进行厌氧产甲烷。经气体纯化器后的氢气和甲烷通过混配阀配比后进入高吸附性能储气装置，废气通入管道式光生物反应器进行脱除。本发明具有安装灵活、占地面积小、运行费用低、产气量大等特点，生物气的收集、纯化和储存方便，适用于厨余垃圾的高值化利用。
A combined device for dry-wet co-production of hydrogen and methane from kitchen waste, including a wet heat pretreatment reactor, a garbage mixing and conveying device, a chamber-coupled biological hydrogen production reactor, an expanded granular sludge bed reactor, and a pipeline photobiological reaction device, high adsorption performance gas storage device, gas purifier, etc. After the kitchen waste is pretreated by moist heat, it is transported to the chamber-coupled bioreactor through the auger for hydrogen production. The hydrogen-rich gas is transported to the hydrogen purifier through the nano-ceramic coating roller, and the liquid phase metabolites enter the EGSB reactor for anaerobic methane production. . After passing through the gas purifier, the hydrogen and methane enter the high-adsorption performance gas storage device through the mixing valve, and the waste gas is passed into the pipeline photobioreactor for removal. The invention has the characteristics of flexible installation, small floor area, low operating cost, large gas production, etc., convenient collection, purification and storage of biogas, and is suitable for high-value utilization of kitchen waste.
Description
Technical field
The invention belongs to bioenergy technical field, relate to a kind of combination unit that adopts the dry wet co-producing hydrogen of rubbish from cooking and methane.
The invention still further relates to the method for utilizing aforesaid combination device co-producing hydrogen and methane.
Background technology
Rubbish from cooking is the important component part of common name ，Shi China domestic refuse of the leftover abandoned of family and eating and drinking establishment, and along with the high speed development of catering trade, generation increases sharply.Rubbish from cooking main component comprises rice and flours food residues, vegetables, vegetable and animals oils, meat bone etc., and chemical constitution be take organic constituent as main, contains the trace elements such as a certain amount of calcium, magnesium, potassium and iron simultaneously.The principal feature of rubbish from cooking is that moisture content is large, perishable, nutritive ingredient is many, forms and floats larger with factors such as seasons.Its proterties and smell all make a very bad impression to environmental health, and easily grow pathogenic micro-organism, the objectionable impurities such as mycotoxin.It is directly to feed pigs that China processes rubbish from cooking traditional method, but in the rubbish from cooking of unprocessed mistake, may contain foot and mouth disease, multiple pathogens and the harmful microorganism such as swine fever germ, thereby cause the cross infection between people and animals, there is food chain risk.
In recent years, hydrogen, as efficient, clean, the reproducible energy, is subject to people's growing interest.Biological hydrogen production has environmental friendliness and the feature such as energy consumption is low, can utilize microorganism the organic matter in rubbish from cooking to be under anaerobic decomposed into the hydrogen as energy source with high added value, has the multiple superiority such as pollution treatment, environmental protection and production capacity.But simple biological hydrogen production process energy utilization rate is only 33.5% in theory, energy conversion rate lowly becomes the bottleneck of restriction biological hydrogen production industrialized development.And on the basis of anaerobic hydrogen-generating, volatile acid and small molecule alcohol that metabolic process is produced ferment as the methanogenic substrate of anaerobism again, not only can realize the coproduction of hydrogen and methane, can also significantly improve the energy conversion efficiency of waste.On the other hand, hydrogen and methane gas are mixed according to a certain percentage to the hydrogen alkane combustion gas of rear preparation, its combustionproperty, calorific value etc. are all significantly increased, and secondary pollution is few, is the ideal biological fuel with high added value.
The nutrient composition contents such as rubbish from cooking grease, albumen are high, can by biological fermentation co-producing hydrogen and methane process implementation, it be innoxious, resource utilization, minimizing, but rubbish from cooking water ratio and saltiness are high, very easily putrid and deteriorated, there is the problems such as pre-treatment requirement is high, startup is slow, fluctuation of service, factor of created gase is low, energy consumption is large, the object that cannot realize the coproduction of hydrogen-methane and be mixed and utilize in existing treatment facility.Therefore, research and development are applicable to rubbish from cooking to be processed and recycling, and realizes carbon dioxide discharge-reduction when preparing hydrogen and methane, and the complexes with " low operation, low cost, easy to operate " are not only study hotspot, especially difficulties urgently to be resolved hurrily.
Summary of the invention
The object of the present invention is to provide the combination unit of the dry wet co-producing hydrogen of a kind of rubbish from cooking and methane.
Another object of the present invention is to provide a kind of method of utilizing aforesaid combination device co-producing hydrogen and methane that relates to.
For achieving the above object, the combination unit of the dry wet co-producing hydrogen of rubbish from cooking provided by the invention and methane, mainly comprises:
One wet heat pretreatment reactor, connects a rubbish and mixes e Foerderanlage, and this rubbish mixes e Foerderanlage and comprises rubbish mixing section and auger, and auger one end is connected with wet heat pretreatment reactor discharge port, and the other end is connected with coupled biological hydrogen-manufacturing reactor opening for feed;
One locellus coupled biological hydrogen-manufacturing reactor, inside is anaerobic hydrogen-generating chamber and anaerobic methane production chamber, and between anaerobic hydrogen-generating chamber and anaerobic methane production chamber, being provided with that anaerobic methane production chamber is unidirectional can Open valve, and the discharge port of anaerobic methane production chamber connects solid-liquid separator;
One nano-coating pottery roller bearing, runs through locellus coupled biological hydrogen-manufacturing reactor, and the outlet side of nano-coating pottery roller bearing is connected to hydrogen purifier;
The isolated liquid phase thing of solid-liquid separator enters CGSB and carries out anaerobism product methane, and the isolated solid product of solid-liquid separator is discharged solid-liquid separator;
The bottom of CGSB is reaction zone, is filled with anaerobic grain sludge in reaction zone; The top of CGSB is settling region, and triphase separator is installed in settling region;
The air outlet of CGSB is connected to methane purifier;
One duct type bioreactor, by micro-algae cultivation pool, cultivate pipeline and be arranged on the light source of cultivating pipe interior and form, wherein the pond body of micro-algae cultivation pool is made by the synthetic glass of printing opacity, and micro-algae cultivation pool top is provided with water distributor; The inlet mouth of micro-algae cultivation pool is connected with the waste gas outlet of methane purifier with hydrogen purifier, and remaining carbonic acid gas and hydrogen sulfide waste gas after purifying are entered to duct type bioreactor; The discharge port of micro-algae cultivation pool bottom is connected in series with cultivating pipeline, and the discharge port of cultivating pipeline is connected with the opening for feed of micro-algae cultivation pool;
The air outlet of hydrogen purifier and methane purifier is connected to accumulator unit by a mixing valve, at least one matrix material combining in the air storage chamber of this accumulator unit in the storage hydrogen molecule sieve of filling storage hydrogen and storage methane and carbon back, magnesium base, zirconium system or Rare Earth material.
Described combination unit, wherein, wet heat pretreatment reactor is provided with temperature regulator and tensimeter, and wet heat pretreatment reactor is inner bag and shell double-layer structure, between inner bag and shell, is filled with thermal oil.
Described combination unit, wherein, rubbish mixes e Foerderanlage and comprises rubbish mixing section and auger, auger one end is connected with wet heat pretreatment reactor discharge port, the other end is connected with locellus coupled biological hydrogen-manufacturing reactor opening for feed, is jointly fixed on and produces on hydrogen reactor support, to save floor space.
Described combination unit, wherein, locellus coupled biological hydrogen-manufacturing reactor is two-layer cylinder structure, inwall is provided with 4-8 group triangular prism-shaped baffle plate.
Described combination unit, wherein, the anaerobic grain sludge loading level in CGSB is the 10-50% of reaction zone useful volume.
Described combination unit, wherein, the light source that the cultivation pipe interior of duct type bioreactor is installed is yellow fluorescence fluorescent tube.
Described combination unit, wherein, the top of high absorption property accumulator unit is openable sealing cover, cover tensimeter and pressure-regulator are installed, and inlet mouth is connected with gas-circulating system through three-way solenoid valve with air outlet, realizes intermittent type and stores fast hydrogen.
The method of utilizing aforesaid combination device co-producing hydrogen and methane provided by the invention, its key step is:
After rubbish from cooking fragmentation, be packed into and in damp and hot pretreatment unit, carry out pre-treatment;
Pretreated rubbish mixes the aerobic pretreatment chamber that is packed into locellus coupled biological hydrogen-manufacturing reactor by auger and carries out decomposition pre-treatment, afterwards material can be transferred to anaerobic hydrogen-generating chamber by Open valve through unidirectional, and adds hydrogenogens agent and produce hydrogen with strengthening;
Liquid phase meta-bolites after anaerobic hydrogen-generating pumps into CGSB after solid-liquid separator separation, under the effect of anaerobic activated sludge methanogen floras, generates methane gas;
The methane gas that the hydrogen that anaerobic hydrogen-generating chamber generates and CGSB produce is carried out purifying with dry by hydrogen purifier and methane purifier respectively, and the hydrogen after purifying and methane enter accumulator unit after mixing valve carries out proportioning;
The waste gas that purifying removes passes into duct type bioreactor and processes, and realize micro-algae cultivation pool and cultivate circulating of micro-algae culture in pipeline by recycle pump, the light source of duct type photoreactor inside is cultivated illumination is provided for micro-algae, promotes micro-algae photosynthesis to carry out off gas treatment.
Described method, wherein, micro-algae refers to one or more in chlorella, Dunaliella salina, diatom, blue-green algae.
The invention has the advantages that:
(1) locellus coupled biological hydrogen-manufacturing reactor of the present invention inside is double-reaction area structure, middle part is divided into pretreatment chamber and fermentation and hydrogen production chamber by the unidirectional dividing plate of opening, first material carries out aerobic pretreatment in pretreatment chamber and enters anaerobic room again and carry out fermentation and hydrogen production, has realized quick startup and the steady running of anaerobic reactor.
(2) biological hydrogen production reactor inwall of the present invention is provided with 4-8 and organizes triangular prism shaped baffle plate, make inside reactor without dead angle, avoid fermentation inequality and miscellaneous bacteria to generate, by beating the abundant mixing that realizes material with turning effort, minimizing is to mycelial destruction, the microorganism active that guarantees fermenting process, effectively improves fermentation gas amount and energy conversion efficiency.
(3) drum shaft that biological hydrogen production reactor of the present invention center is run through carries out micro-nano aeration by nano ceramics film and biogas is collected, and has realized aerobic and anaerobically fermenting and has hocketed.Nano ceramics plated film distinctive aperture feature and selective filter characteristic, guaranteed efficient collection, heat diffusion and the uniform aeration of hydrogen, and be difficult for stopping up, without cleaning.
(4) duct type bioreactor of the present invention is coupled the micro-algae of cultivation and the effect of stabilizing carbon dioxide waste gas, in micro-algae Fast Growth process, make full use of photosynthesis and carry out carbonic acid gas, and the biological fixation of a small amount of hydrogen sulfide, not only obtain the chlorella product of high density, also realize removing of carbonic acid gas, hydrogen sulfide in biogas, solved the secondary pollution problem in rubbish from cooking resource utilization process.
(5) high absorption property accumulator unit of the present invention uses the methane storing materials such as molecular sieve hydrogen storage material and carbon back; such material selectivity high adsorption capacity, surfactivity are high, long service life; accumulator unit degree of safety is high, simple to operate, gas storage and release convenient; convenient transportation; when having realized hydrogen and methane, store, be easy to large-scale production application.
(6) the present invention is the coupling of rubbish from cooking dry type fermentation and hydrogen production and wet type anaerobism methanogenic phase, and the recycling pipeline algae photoreactor that declines carries out waste gas and removes, and when obtaining high-purity hydrogen alkane gas, reached the object of carbon emission reduction and the cultivation of micro-algae.
(7) the present invention is mutually integrated by multiple technologies such as damp and hot pre-treatment, anaerobically fermenting, the solid carbon of micro-algae, physical and chemical adsorption, have complementary advantages, there is the features such as flexible for installation, floor space is little, working cost is low, gas production rate is large, the collection of biogas, purifying and storage are convenient, are suitable for the higher value application of rubbish from cooking.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Description of symbols in accompanying drawing:
1 wet heat pretreatment reactor; 2 mixing devices; 3 augers; 4 locellus coupled biological hydrogen-manufacturing reactors; 5 CGSB (EGSB reactor); 6 duct type bioreactors; 7 gas purifiers; 8 high absorption property hydrogen-storing devices; 9 tensimeters; 10 inner bags; 11 shells; 12 thermal oils; 13 temperature regulators; 14 thief holes; 15 aerobic pretreatment chambers; 16 anaerobic hydrogen-generating chambers; 17 combined electrodes; 18 nano ceramics plated film roller bearings; 19 methane purifiers; 20 solid-liquid separators; 21 anaerobic grain sludges; 22 reaction zones; 23 triphase separators; 24 settling regions; 25 hoppers; 26 hydrogen purifier; 27 cultivation pools; 28 cultivate pipeline; 29 heating jackets; 30 water distributors; 31 bases; 32 gravity lifting devices; 33 one-way cocks; 34 baffle plates; 35 air storage chambers; 36 gas storage matrix materials; 37 pressure control systems; 38 inlet mouths; 39 air outlets; 40 three-way solenoid valves; 41 mixing valves.
Embodiment
Hydrogen-methane coproduction combination unit provided by the invention, mainly comprises:
One wet heat pretreatment reactor, comprises high pressure inner bag, explosion-proof thermally insulating housing, temperature regulator, tensimeter, between inner bag and shell, fills thermal oil.Rubbish from cooking is placed in high pressure inner bag, the 10-60% that loading level is useful volume, and it is 90-150 ℃ that temperature regulator is controlled pretreatment temperature, processes 20-60 minute.
One rubbish mixes e Foerderanlage, comprises rubbish mixing section and auger, and auger one end is connected with wet heat pretreatment reactor discharge port, and the other end is connected with coupled biological hydrogen-manufacturing reactor opening for feed, is jointly fixed on and produces on hydrogen reactor support, to save floor space.
One locellus coupled biological hydrogen-manufacturing reactor, aspect ratio is 1: 0.5-1: 5 two-layer cylinder structure, inwall is provided with 4-8 group triangular prism-shaped baffle plate.Reactor is double-reaction area structure, and middle part can Open valve be divided into pretreatment chamber and ，Liang chamber, fermentation and hydrogen production chamber useful volume ratio is 1: 1-1: 5 by unidirectional.Nano ceramics roller bearing runs through from reactor center, and axle two ends are fixed on appliance stand by flange, the netted roller bearing of hollow that nano ceramics membrane cylinder axle of the present invention is stainless steel, and skin is coated with nano ceramics film for collection and the aeration of biogas.For convenience of input and output material, tank body one side is designed to the opening for feed of quick opening structure, and opposite side is designed to quickly discharging mouth.The hydrogen-rich gas that anaerobically fermenting produces is delivered to hydrogen purifier through pipeline, and solid phase and liquid phase meta-bolites enter solid-liquid separator through discharge port.The isolated liquid phase meta-bolites of solid-liquid separator enters CGSB and carries out anaerobism product methane, and solid product is as green organic fertilizer.
One CGSB (EGSB), comprises reaction zone, settling region, triphase separator, granule sludge etc.Wherein EGSB reactor aspect ratio is 5: 1-20: 1, and inside is filled with anaerobic grain sludge, and the loading level of granule sludge is the 10-50% of reaction zone useful volume.The liquid product of fermentation and hydrogen production enters reaction zone from EGSB reactor bottom, the biogas producing is separated through triphase separator with muddy water mixed solution, biogas after collection is delivered to methane purifier through pipeline, water outlet flows into hopper through settling region water outlet, part water outlet mixes with water inlet in Returning reactor again, realize the object of effluent recycling, reflux ratio is 1: 1-10: 1.
One duct type bioreactor, is comprised of micro-algae cultivation pool, cultivation pipeline, cylindrical light source etc., and wherein the pond body of micro-algae cultivation pool is made by the synthetic glass of printing opacity, and tank body outside is provided with temperature control heating jacket, and cultivation pool top is provided with water distributor.Cultivation pool is connected with the waste gas outlet of gas purifier, and after the purified device purifying of biogas, the waste gas such as remaining carbonic acid gas and a small amount of hydrogen sulfide enters duct type bioreactor, through micro-algae photosynthesis, carries out off gas treatment.Micro-algae cultivation pool middle part is provided with inlet mouth, and bottom is provided with discharge port, and this discharge port is connected in series with cultivating pipeline by recycle pump, cultivates the discharge port of pipeline and the opening for feed of cultivation pool and is connected.Cultivating pipe interior is 2-6 yellow fluorescence fluorescent tube, for micro-algae, cultivates sufficient illumination is provided.
One high absorption property accumulator unit, aspect ratio is 5: 1-0.5: 1 double-layer circular column construction, internal layer air storage chamber is filled with high-performance storage hydrogen and storage methane matrix material.Air storage chamber top is openable sealing cover, covers pressure control system is installed, and comprises tensimeter and pressure-regulator.Air storage chamber bottom is designed with inlet mouth, is connected with the gas outlet of gas purification apparatus, and upper design has air outlet, and inlet, outlet is connected with circulation ventilating pipeline through three-way solenoid valve, can realize intermittent type and store fast hydrogen.
The inner high performance material of filling of high absorption property accumulator unit is the matrix material of the combinations such as storage hydrogen molecule sieve and carbon back, magnesium base, zirconium system and/or Rare Earth material.
In high absorption property accumulator unit, it is to regulate three-way solenoid valve that mode is stored in intermittent type combustion gas, inlet mouth is connected with hydrogen storage chamber, the combustion gas of hydrogen alkane enters hydrogen storage chamber through inlet mouth, now close venting port, air outlet is connected with circulation ventilating pipeline, hydrogen is absorbed rapidly by high absorption gas storage material in air inlet working cycle, unabsorbed combustion gas is returned to inlet mouth through circulation ventilating pipeline, with after inlet mouth combustion gas mixing, again enter hydrogen-storing device and store, until hydrogen-storing device internal pressure while reaching 1-10MPa, is closed inlet mouth, storage hydrogen end of processing.While using the combustion gas of hydrogen alkane, open air outlet, close circulation ventilating pipeline and inlet mouth, combustion gas is discharged, until air storage chamber pressure is 0.9-0.1MPa, stop using, close air outlet, repeat gas storage operation.
In duct type bioreactor, micro-algae culture medium is through 80-120 ℃ of sterilizing 20-60min, inoculates micro-algae culture after being cooled to 20-35 ℃, enters duct type bioreactor.The purified rear remaining waste gas of biogas enters cultivation pool, mixes by recycle pump pass into and cultivate pipeline and carry out returning to cultivation pool after sufficient photosynthesis again with micro-algae culture, realizes off gas treatment.In waste gas treatment process, hierarchy of control pH is between 6.0-7.5, and temperature is controlled at 20-35 ℃ by recirculated water, and processing 2-7 days is one-period.
Micro-algae of the present invention refers to the green alga strong from oxygen ability, fat content is high and protein content is high, as chlorella, Dunaliella salina equal energy source algae, but is not limited only to green alga, can also be diatom, blue-green algae etc.The raw material that the micro-algae obtaining after off gas treatment can be used as biofuel carries out higher value application, can also be used as feed, fertilizer.
Between EGSB reactor and duct type bioreactor, be connected with combustion gas purifier, purifier comprises hydrogen purifier and methane purifier two portions, and the mixing match that carries out the combustion gas of hydrogen alkane by mixing valve; Purifier inside is also filled with siccative, for removing of biogas moisture.
Below in conjunction with drawings and Examples, the present invention is illustrated in greater detail.
Apparatus of the present invention comprise wet heat pretreatment reactor 1, mixing device 2, auger 3, locellus coupled biological hydrogen-manufacturing reactor 4, EGSB reactor 5, duct type bioreactor 6, gas purifier 7, high absorption property hydrogen-storing device 8 etc.Rubbish from cooking is placed in the high pressure inner bag 10 of damp and hot reactor 1, between inner bag 10 and shell 11, fills thermal oil 12, by temperature regulator 13, controls treatment temp, tensimeter 9 display process pressure.Pretreated rubbish from cooking is delivered to locellus coupled biological hydrogen-manufacturing reactor 4 by auger 3 after mixing device 2 stirs.Rubbish is after aerobic decomposition pre-treatment, and the gravity lifting device 32 by setting device base 31 makes material 15 through one-way cocks 33, enter anaerobic hydrogen-generating chamber 16 and produce hydrogen-rich gases from aerobic pretreatment chamber.Triangular prism shaped baffle plate 34 designs of reactor wall, fully mix material by beating with turning effort, effectively improve fermentation gas amount and energy conversion efficiency.The control parameters such as the temperature in biological hydrogen production process, pH value, dissolved oxygen are carried out the real time measure by a minute indoor combined electrode 17, and data synchronous transmission to control panel is shown.The hydrogen-rich gas that anaerobically fermenting produces is delivered to hydrogen purifier 26 through nano ceramics plated film roller bearing 18, and solid phase and liquid phase meta-bolites enter solid-liquid separator 20 through discharge port.The isolated liquid phase meta-bolites of solid-liquid separator enters EGSB reactor 5 and carries out anaerobism product methane.
The liquid product of fermentation and hydrogen production enters the reaction zone 22 that is filled with anaerobic grain sludge 21 from EGSB reactor bottom, the biogas producing is separated through triphase separator 23 with muddy water mixed solution, wherein through settling region, 24 water outlets flow into hopper 25 in water outlet, part water outlet mixes with water inlet in Returning reactor again, and the biogas after collection is delivered to methane purifier 19 through pipeline.The 22 different heights places, reaction zone that are positioned at EGSB reactor are provided with thief hole 14, are convenient to running condition to monitor.Above-mentioned rich hydrogen and methane biogas are undertaken entering high absorption property accumulator unit 8 after mixing match by mixing valve 41 respectively after gas purifier, and device internal layer air storage chamber 35 is filled with high-performance storage hydrogen and storage methane matrix material 36.Air storage chamber 35 tops are provided with pressure control system 37, and air storage chamber bottom is designed with inlet mouth 38, and upper design has air outlet 39, and inlet, outlet is connected with gas-circulating system through three-way solenoid valve 40, can realize intermittent type and store fast hydrogen.The remainder of exhaust gas that gas purifier is discharged enters duct type bioreactor 6 through recycle pump.Duct type bioreactor 6 is comprised of micro-algae cultivation pool 27 and cultivation pipeline 28, cultivation pool indirect heating cover 29 is controlled culture temperature, top is provided with mixing of water distributor 30 strengthening gases and nutrient solution, cultivation pool bottom discharge mouth is connected in series by recycle pump and cultivation pipeline 28, cultivate the discharge port of pipeline and the opening for feed of cultivation pool and be connected, realize waste gas and remove and micro-algae cultivation.
In the present embodiment, the actual operating of inventive method and device is as follows:
After rubbish from cooking fragmentation, be packed in damp and hot pretreatment unit, loading level is useful volume 50%, and it is 120 ℃ that temperature is controlled, and processes after 30 minutes cooling.Pretreated rubbish mixes the aerobic room that is packed into locellus coupled biological hydrogen-manufacturing reactor by auger and carries out decomposition pre-treatment, and loadings is useful volume 50%, and the volume ratio of aerobic pretreatment chamber and anaerobic hydrogen-generating chamber is 1: 2.Decomposition was transferred to anaerobic hydrogen-generating chamber by material through one-way cock after 7 days, adds highly effective hydrogen yield microbial inoculum produce hydrogen with strengthening by thief hole, and the anaerobically fermenting cycle is 3 days, and in biogas, hydrogen content is greater than 60%.After anaerobic hydrogen-generating, liquid phase meta-bolites pumps into EGSB reactor after solid-liquid separator separation, under the effect of anaerobic activated sludge methanogen floras, generate methane gas, this EGSB reactor aspect ratio is 8: 1, and operational conditions is reflux ratio 4: 1, and water inlet organic loading is 10kgCOD/ (m
3d), upflow liquid velocity 0.5m/h, 35 ± 1 ℃ of temperature, the waste water COD clearance after processing reaches more than 90%, and in biogas, methane content is greater than 80%.
The methane gas that the hydrogen rich gas that product hydrogen reactor generates and EGSB reactor produce is carried out purifying and dry by gas purifier respectively, hydrogen after purifying and methane enter high absorption property accumulator unit after mixing valve carries out proportioning, this device aspect ratio 2: 1, inside is filled with storage hydrogen molecule sieve and active carbon filler, storage hydrogen timer internal pressure should, not higher than 5MPa, be put room pressure in hydrogen process and should be not less than 0.5MPa.The waste gas removing passes into duct type bioreactor and processes, and realizes circulating of micro-algae culture in cultivation pool and pipeline by recycle pump, and the carbon dioxide in waste gas decreasing ratio after processing reaches more than 85%, effectively reduces secondary pollution.In cultivation pool, micro-algae adopts chlorella, and inoculum size is volume of culture 10%, and regulating initial pH is 7.5, and by heating jacket, controlling culture temperature is 35 ℃, and duct type photoreactor inside provides illumination by two 40w yellow fluorescence lamps.Apparatus of the present invention floor space is little, less than 3 square meters, and mobile and easy for installation, and anaerobic room is feeded in latter 6 hours can produce hydrogen, also can remove more than 85% carbonic acid gas in biogas simultaneously, has realized the object of production capacity reduction of discharging.
Claims (9)
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| CN103981220B (en) * | 2014-05-26 | 2016-08-24 | 中国农业大学 | The method that a kind of hydrogen alkane fermentation coupling both culturing microalgae processes organic waste |
| CN104372030A (en) * | 2014-10-20 | 2015-02-25 | 天津大学 | Method for coproducing hydrogen gas and methane by sludge-kitchen waste mixed fermentation |
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| CN108841580B (en) * | 2018-07-27 | 2021-11-30 | 中国农业大学 | Hydrogen-producing and methane-producing reactor for treating solid waste |
| CN110144293B (en) * | 2018-12-28 | 2023-12-01 | 河南农业大学 | Photosynthetic hydrogen production device and hydrogen production process |
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| CN113150962B (en) * | 2021-01-21 | 2022-08-12 | 河北北方学院 | A high-efficiency catalytic system based on waste hydrogen production |
| CN114378105B (en) * | 2022-01-19 | 2024-04-12 | 重庆大学 | Multistage treatment system and method for kitchen waste and cellulosic biomass in cooperation |
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