CN201062265Y - Biological energy-marsh gas fermentation-solar energy integrated utilization system - Google Patents

Biological energy-marsh gas fermentation-solar energy integrated utilization system Download PDF

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Publication number
CN201062265Y
CN201062265Y CNU2007200226130U CN200720022613U CN201062265Y CN 201062265 Y CN201062265 Y CN 201062265Y CN U2007200226130 U CNU2007200226130 U CN U2007200226130U CN 200720022613 U CN200720022613 U CN 200720022613U CN 201062265 Y CN201062265 Y CN 201062265Y
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China
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gas
biogas
unit
solar energy
fermentation
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CNU2007200226130U
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Chinese (zh)
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董磊
景元琢
李景东
强宁
刘艳涛
张兆玲
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济南百川同创实业有限公司
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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M21/00Bioreactors or fermenters specially adapted for specific uses
    • C12M21/04Bioreactors or fermenters specially adapted for specific uses for producing gas, e.g. biogas
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS 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
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C12M41/18Heat exchange systems, e.g. heat jackets or outer envelopes
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00Technologies for the production of fuel of non-fossil origin
    • Y02E50/30Fuel from waste, e.g. synthetic alcohol or diesel
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00Technologies relating to chemical industry
    • Y02P20/50Improvements relating to the production of bulk chemicals
    • Y02P20/59Biological synthesis; Biological purification

Abstract

The utility model relates to a biomass energy, marsh gas fermentation, and solar energy integrated utilization system, which consists of a biomass gasification unit, a marsh gas anaerobic fermentation unit, a central integrated controlling unit, a solar energy photothermal unit, a biomass fuel gas heat supply unit, a biomass fuel gas and marsh gas automatic mixing unit, and a fuel gas transmission and distribution and fuel gas user unit. The central controlling unit is respectively connected with the rest of units, the biomass gasification unit is respectively and mutually connected with the biomass fuel gas heat supply unit and the biomass fuel gas and marsh gas automatic mixing unit, the marsh gas anaerobic fermentation unit is mutually connected with the biomass fuel gas and marsh gas automatic mixing unit, the biomass fuel gas and marsh gas automatic mixing unit is mutually connected with the fuel gas transmission and distribution and fuel gas user unit, and the solar energy photothermal unit and the biomass fuel gas heat supply unit are respectively and mutually connected with the marsh gas anaerobic fermentation unit. The utility model can not only change the pollution into marsh gas resources, but also improve the straw gasification level and the flue gas decontaminate level; the utility model can also utilize straw flue gas and the solar energy photothermal technology as a marsh gas fermentation system to perform the heating.

Description

Biological energy-marsh gas fermentation-solar energy integrated utilization system
Technical field
The utility model relates to a kind of renewable energy comprehensive and utilizes system, specifically a kind of biological energy-marsh gas fermentation-solar energy integrated utilization system.
Background technology
We know that China's Rural areas Biomass Energy Utilization has two kinds of forms at present, and a kind of fuel fabrication that is based on low moisture biomass such as stalk, combustiblerefuse is mainly used in Rural areas resident's cooking central gas supply or small power generation; Another kind be utilize ight soil, can rotten rubbish etc. the high-moisture biomass carry out the hydrocarbon energy and transform and produce biogas, also be mainly used in urban residents' cooking air feed.But these two kinds are utilized form that certain limitation is all arranged, and can not solve village energy resource supply and problem of environmental pollution fully.
Biomass gasification system have gas production rate big, start flexible aerogenesis advantage rapidly, but nitrogen accounts for about 50% in the biological fuel gas calorific value, calorific value is relatively low.And the biogas calorific value is higher relatively, and the biogas degree of cleaning are higher, belongs to high-quality fuel, but the methane fermentation system aerogenesis is more even, and the aerogenesis Load Regulation lags behind, and handiness is relatively poor, can not satisfy the needs of use under high load gas in the short period of time.The defective of bionethanation system maximum is the problem of winter operation poor stability, and winter, factor of created gase was quite low, have in addition can't normally move, cause system's utilising efficiency in winter low, cause the waste of resource.
The project that is converted into the energy after the biomass classification in comprehensive utilization village stalk, ight soil, the various sources of rubbish is not appeared in the newspapers at present.In addition, present biomass gasification technology both domestic and external and biogas fermentation technology all are mode of biomass energy utilization independently separately, and the combination of the two kinds of technology that are unrealized, overcome biogas fermentation steady running in winter and the low defective of straw fuel gas calorific value, fail to realize the allocation optimum of biomass resource utilization mode and the high-efficiency comprehensive utilization of resource.And research can unify based on gasifying biomass, biogas fermentation and sun power three efficiently utilization new rural energy supply system be in complete space state especially.Result from international online retrieval, do not see the design and the application of the energy supplying system that organically combines based on the biomass in village stalk, ight soil, the various sources of rubbish classification gasification and anaerobic fermentation technology, and be the patent report of biogas steady running in the winter technology of thermal source with biogas and sun power.
Summary of the invention
The utility model is for overcoming above-mentioned the deficiencies in the prior art, a kind of biological energy-marsh gas fermentation-solar energy integrated utilization system is provided, both can realize focusing on of villages and small towns human and animal excreta and sanitary sewage, changing pollution is the biogas resource, promote gasifying stalk, gas-purification level again, solve the low and inefficient difficult problem that gasifies of tar content height, calorific value that existing gasifying stalk exists; Utilize straw fuel gas and solar energy thermal technology to heat again, solved the problem of biogas aerogenesis cold season poor stability, guaranteed that two kinds of biomass utilize the combination of technology and replenish mutually, expand the Application Areas of biomass energy for methane fermentation system.
The purpose of this utility model is to adopt following technical proposals to realize: a kind of biological energy-marsh gas fermentation-solar energy integrated utilization system, by the gasifying biomass unit, the biogas anaerobic fermentation unit, the integrated control unit of central authorities, the solar energy hot cell, biological fuel gas heat supply unit, the automatic mixed cell of biological fuel gas and biogas, gas transmission and distribution and combustion gas subscriber unit are formed, central control unit is connected respectively with remaining element, difference biological fuel gas heat supply unit, gasifying biomass unit and biological fuel gas link to each other with the automatic mixed cell of biogas, the biogas anaerobic fermentation unit links to each other with the automatic mixed cell of biological fuel gas and biogas, biological fuel gas links to each other with the combustion gas subscriber unit with gas transmission and distribution with the automatic mixed cell of biogas, and the solar energy hot cell links to each other with the biogas anaerobic fermentation unit respectively with biological fuel gas heat supply unit.
Described gasifying biomass unit is made up of feeder, gasification reacting furnace, gas purifier, electric control gear and blower fan, and feeder, gasification reacting furnace, gas purifier and blower fan are in series, and electric control gear is connected by circuit with other parts.
Described gasification reacting furnace is made up of upper and lower body of heater two portions, be respectively equipped with charging opening on the upper furnace body, observe door and self closing door, be provided with cone-shaped body in the upper furnace body, be provided with cavity between cone-shaped body and the furnace body outer wall, the cavity bottom be provided with body of heater in the inlet pipe that communicates; The aspect ratio of lower furnace body is 1.5, and top is reaction zone, and the body of heater border is provided with insulation of wall layer and water jacket, and the middle part is provided with grate body and escape pipe, and escape pipe is provided with temperature sensor; The bottom is grey chamber, and is provided with ash-removing door.
Described gas purifier is mainly by housing be located at the intravital spray chamber of shell, gas liquid chamber, falling film absorption chamber, dehumidification chamber and form, gas liquid chamber is located at the bottom of spray chamber, the right side of gas liquid chamber and spray chamber is located in the falling film absorption chamber, and the right side of falling film absorption chamber is located in the dehumidification chamber; Housing top is provided with inlet pipe, communicates in inlet pipe and the spray chamber, is provided with spray equipment in the spray chamber; The spination riser that is provided with in the gas liquid chamber is positioned at below the dividing plate between gas liquid chamber and falling film absorption chamber, deeply about under water 100mm; Indoor impeller and the dividing plate of being provided with of falling film absorption, the bottom is provided with sewage door; Top, dehumidification chamber is provided with the air outlet.
Described biogas anaerobic fermentation unit is mainly composed in series successively by pre-processing device, UASB reactor, refining plant, at pre-processing device and UASB reactor water level sensor and temperature sensor are installed all, pre-processing device comprises water collecting basin, barrier and submersible sewage pump, barrier is arranged on the water collecting basin ingress, submersible sewage pump is located in the water collecting basin, the rising pipe of submersible sewage pump is connected in the UASB reactor, and the biogas that produces in the UASB reactor is delivered to gas storage holder after collection, refining plant dehydration desulfurization and impurity elimination.
Described UASB reactor is made up of water inlet water distribution system, reaction zone and triphase separator, described water inlet water distribution system is made up of a main water inlet tube and many roots water distributing pipe, main water inlet tube reaches the UASB reactor bottom, then by along equally distributed many roots water distributing pipe uniformly distributing feed liquid of main water inlet tube one week, microorganism is fully contacted with raw material, and help the formation of granule sludge.Reaction zone comprises Sludge Bed district and sludge suspension district; Triphase separator is positioned at the anaerobic reactor middle and upper part, become 55 ° to be immersed in below the slurry face with the UASB reactor, it is made up of gas trap and baffle, whole baffle forms a conical space, the top connects gas trap, the function of triphase separator is introduced gas trap with biogas exactly, and the water of handling out is introduced exhalant region, and solid particulate is imported reaction zone.Between baffle and gas trap, also placed a bridge breaker,, made MRT, helped the output of biogas than the big leap ahead of HRT in order to prevent that solid is floating and to go out.
Described solar energy hot cell is made up of solar energy collector, heat storage water tank, circulating line and automatic control device four parts, and solar energy collector links to each other with heat storage water tank by circulating line, automatic control device; Equal mounting temperature sensor in solar energy collector import and export and the heat storage water tank.
Described biological fuel gas heat supply unit is made up of gas heating boiler and coupled intake ducting and heat supply pipeline.
The automatic mixed cell of described biological fuel gas and biogas is mainly by the biogas gas-holder, biological fuel gas and biogas mixing gas-holder, mixing blower fan and combustion gas capacity Monitoring systems forms, combustion gas capacity Monitoring systems links to each other with biogas mixing gas-holder with biological fuel gas with the biogas gas-holder respectively, in the pipeline of Straw Gas before mix gas-holder, the Straw Gas flow is installed and takes into account transmitter, in the biogas gas-holder He in the gas mixture gas-holder, liquid level sensor is installed all, be provided with under meter in the outlet of biogas gas-holder, mix blower fan and be located between air mixture gas-holder and the biogas gas-holder, the gas-holder front and back end is respectively equipped with liquid packing and spark arrester.
Described gas transmission and distribution and combustion gas subscriber unit comprise auxiliary facility, gas line network and family gas-fired equipment, and on auxiliary facility installation and the gas line network, gas line network links to each other with gas-fired equipment with the family; Described auxiliary facility comprises the function well and within it valve device, water collector are installed, are diffused device; The valve device comprises gate valve, ball valve and stopcock, and water collector is installed on the lower with certain slope pipeline; The family comprises gas meter, purifier, valve, the air mixture kitchen range that connect successively by pipeline with gas-fired equipment.
The integrated control unit of described central authorities comprises transmitter, under meter and control module, transmitter and under meter are arranged on aforementioned each unit, transmitter and flow meter data are delivered on the remote computer by local area network, be installed in the data that the control module analyzing and processing on the remote computer is transmitted, and make corresponding order equipment is controlled.Control module mainly comprises data acquisition module, data central processing module, data feedback output module.Data acquisition module is mainly gathered system core technical parameters such as the gas production rate, temperature of vapourizing furnace, be translated into numerary signal, be delivered to the data central processing module, and compare with preliminary setting parameter, central processing module sends instruction to the data feedback module, the data feedback module is converted into simulating signal with the numerary signal of feedback again, is transported to driving mechanism, realizes the automatization control of total system.
The utility model had both been realized focusing on of villages and small towns human and animal excreta and sanitary sewage, changing pollution is the biogas resource, gasifying stalk, gas-purification level have been promoted again, solved the low and inefficient difficult problem that gasifies of tar content height, calorific value that existing gasifying stalk exists, develop the special-purpose cooking and the heating system of suitable Straw Gas-biogas air mixture, lay the foundation for setting up independent distribution formula biomass heating system.
The beneficial effects of the utility model are:
1. realized that biomass gasification technology, biogas anaerobic fermentation technology and solar energy thermal technology organically combine, set up based on gasifying biomass, biogas fermentation and sun power three and can unify the efficient new rural energy supply system of utilizing, the high-quality air mixture of generation can substitute the energy confession that conventional energy resources is realized the Rural areas fully.
2. vapourizing furnace adopts rational streamline shape, structure, prevents the burn into air door current limliting vaporized chemical of gaseous chlorine, gradient burning, gasification, and controls reaction speed suppresses slagging scorification; The closed cycle purification system that integrates spray, impulse, falling film absorption and dehumidification function, the purification efficiency height, water consumption is few, non-secondary pollution.
3. be the biogas fermentation heating system of the thermal source efficient proportioning that realized two kinds of energy and effectively be connected with biological fuel gas and sun power, successfully solved the problem of biogas winter operation poor stability, biogas load in winter reaches more than 85% of summer operation load, and the pond holds factor of created gase and reaches 0.9m 3/ m 3
4. the biomass fuel gas boiler is the normal-pressure horizontal gas fired-boiler, and wherein burner adopts the dynamic combustion mode, and the scope of application of combustion gas is big; Portfire adopts the mutual sleeve technology of time-delay, has time-delay purging, igniting automatically, explosion-proof anti-flame-out function.
5. the associating supply technology had both promoted fuel gases calorific value in this project, utilized straw fuel gas and solar energy thermal technology to heat for methane fermentation system again, had solved the problem of biogas aerogenesis cold season poor stability; Central control system has been realized the automatic control and the monitoring of whole gasification station, and the level of comprehensive utilization of renewable energy source is risen to brand-new height, for the industrialized development of China's renewable energy utilization provides technical basis.
Description of drawings
Fig. 1 is that the utility model system forms synoptic diagram;
Fig. 2 is a gasification reacting furnace structural representation of the present utility model;
Fig. 3 is a gas purifier structural representation of the present utility model;
Fig. 4 is a UASB structure of reactor synoptic diagram of the present utility model;
Fig. 5 is a biogas fermentation combined heating system general flow chart of the present utility model;
Fig. 6 is that sun power of the present utility model is forced recycle system synoptic diagram;
Fig. 7 is solar energy collector quantity of the present utility model and energy share graph of relation;
Wherein 1. charging openings are 2. observed door, 3. self closing door, 4. inner cone, 5. insulation of wall layer and water jacket, 6. grate body, 7. escape pipe, 8. ash-removing door, 9. upper furnace body, 10. lower furnace body, 11. housings, 12. spray chambers, 13. gas liquid chamber, falling film absorption chambers 14., dehumidification chambers 15., 16. inlet pipe, 17. spray equipment, 18. impellers, 20. sewage doors, 21. air outlets, 22. main water inlet tube, 23. sub-water distributing pipes, 24.UASB reactor.
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified.
As shown in Figure 1, native system is that the biogas heating of thermal source is that accurately mixed stocker unit, gas transmission and distribution and combustion gas subscriber unit are formed automatically for unit, biological fuel gas and biogas by gasifying biomass unit, biogas anaerobic fermentation unit, central integrated control unit, solar energy hot cell, with biological fuel gas and sun power.
The gasifying biomass unit is made up of feeder, gasification reacting furnace, cleaner, electric control gear and blower fan.The technical process of its gasification is: by hay cutter contained humidity is lower than 20% biomass material, is treated to the length about 20mm, in feeder is delivered to gasification reacting furnace, through pyrolysis, oxidation and reduction reaction, be converted into inflammable gas.Combustion gas is admitted to cleaner, after removing dust, tar etc. and cooling off, is sent to distributing system through blower fan.
The raw material of gasifying biomass is the discarded stalk in village and other flammable biomass garbage in this project, the complicacy of raw material and diversity will produce certain influence to the stability of gasification, and gasification reacting furnace is that biomass material is carried out the key equipment that thermal chemical reaction converts high-grade inflammable gas to, this project adopts fixed bed downdraft vapourizing furnace, and its structural principle is described below.
As shown in Figure 2, vapourizing furnace is made up of upper and lower body of heater 9,10 two portions, upper furnace body 9 is provided with charging opening 1, observes door 2 and self closing door 3, biomass material is dropped in the stove by top filling mouth 1, vaporized chemical is entered by self closing door 3, and the inner cone 4 of upper furnace body 9 inner chambers constitutes cavity, the sensible heat preheating that utilizes drying zone to provide with outer wall, improve the temperature and the interior gasification reaction speed of stove of vaporized chemical, the vaporized chemical of preheating is in cavity bottom inlet pipe imports stove; Lower furnace body 10 tops are reaction zone, and the border is provided with insulation of wall layer and water jacket 5, and material carries out the pyrolytic gasification reaction in lower furnace body 10, form drying zone, pyrolysis zone, oxidation zone and reduction zone in the pyrolytic gasification process naturally; Lower furnace body 10 middle parts are provided with grate body 6, escape pipe 7, and the bottom is grey chamber, are provided with ash-removing door 8, and the ash that the complete back of material reaction produces enters ash chamber, body of heater bottom by the swing of grate body 6, is discharged by ash-removing door 8.Be provided with temperature display meter at drying zone and oxidation zone, can control the temperature in each district by the flow of function unit pilot-gas.
According to the complicated and diversified performance characteristics of biomass material, for obtaining fuel gases calorific value height, tar content is low and gasification efficiency is high technical indicator, the aspect ratio of this project vapourizing furnace lower furnace body is optimized for 1.5, make speed of response evenly, continuously, can not cause the cavity, makings is stable, and is reliable; Improved the temperature in redox district, promoted coke tar cracking, reaction in furnace is complete, and calorific value improves, tar content reduces; For the complexity that solves biomass material with change the unstable combustion that causes and the problem of calorific value fluctuation, vaporized chemical enters after the self closing door current limliting in the stove and burns, gasifies in the oxidation zone and the reduction zone gradient of lower furnace body with raw material, controls reaction speed according to the difference of raw material, is regulated air output automatically; For the release that repeats that prevents the alkali metal chloride gaseous chlorine comes in contact reaction with metal, rational streamline shape, structure in stove, have been selected, and block has certain refractory materials in furnace chamber and pipeline, suppress to reduce corrosion of metal because the release of gaseous chlorine is constantly carried by the pipe surface internal layer metal Fe to skin.
The combustion gas of output is thick combustion gas in the gasification reacting furnace, and temperature is high and contain a large amount of tar and ash grades, and needs cooling and purifies, to guarantee efficient, the non-stop run of combustion gas application system.Use at present comparatively general refining plant and mainly be divided into two kinds of dry gas cleaning and wet dust removals, but function is single relatively, decontamination effect improving is undesirable.This refining plant integrates spray, impulse, falling film absorption and dehumidification function, and the purification efficiency height is simple in structure, the disposable unpowered discharge of ash content, and water consumption is less, belongs to domestic initiation.This refining plant structure as shown in Figure 3, housing 11 is provided with spray chamber 12, gas liquid chamber 13, falling film absorption chamber 14 and dehumidification chamber 15 in it.The thick combustion gas of high temperature enters spray chamber 12 by gasification reacting furnace by inlet pipe 16, goes into gas liquid chamber 13 through the cooling of spray equipment 17 spray is laggard; Combustion gas is influent under the effect of gas liquid chamber's 13 internal pressures, by being located at the spination riser below the dividing plate in the gas liquid chamber, produces gas-vapor mix impulse stream, thereby make gas breaking, with the liquid thorough mixing, contact, most dusts are caught by water, tar gas is met water and is condensed and mix in water; Gas after rough purification enters liquid again and is membranaceous mobile falling film absorption chamber 14 and further purifies.Falling film absorption chamber 14 is made up of two portions, at first the air-flow with water blows impeller 18 from bottom to top, impeller 18 relies on centrifugation that moisture is thrown to locular wall, make moisture flow get back to gas liquid chamber 13, moisture circulates in the gas liquid chamber 13, can be with the fluid removal of dirt, the effect of impeller 18 can prevent that air-flow is with water in a large number, airflow passes baffle surface then, dust of not removing and tar be attached to top, and be pooled to 14 bottoms, falling film absorption chamber and discharge; At last, clean wet gas current upwards flows and removes water smoke through dehumidification chamber 15, and the combustion gas of process dehumidification enters distributing system by air outlet 21; Ash content in the cleaner, tar are discharged by sewage door 20, and sewage enters sewage lagoon by pipeline.This system is a closed-circuit system, and the sewage after physics and biochemical treatment can be recycled.According to the temperature of Purge gas, composition with to discharging the purity requirement of gas, stage purification can be set.This cleaner is a totally enclosed high-efficient wet-type refining plant that integrates spray, impulse, falling film absorption, dehumidification, purification efficiency height, tar content<20mg/m 3, without any the gas leakage point, the combustion gas oxygen level is lower than 1%, no potential safety hazard.
By the gasification test of various biomass materials, gasification system is reliable, respond well, detects through Shandong Prov. Products Quality Supervisory Inspection Office, and its key technical indexes is as shown in the table with similar unit contrast:
Be not difficult to find out that by last table this unit has the calorific value height, tar, hydrogen sulfide and oxygen level are low, and characteristics such as gas purity height are simple to operate, free from environmental pollution, with low cost, are present comparatively ideal gasifying biomass units.
The anaerobically fermenting unit mainly is made up of pre-processing device, UASB modified version reactor, purification system.Its system process is: the sewage of collection is provided with grid from flowing to water collecting basin in the water collecting basin ingress, removes the thick dirt in the water.Submersible sewage pump is installed in water collecting basin, sewage is evacuated to the UASB reaction unit, feces of livestock and poultry is transported in the hopper by shovel loader, by lifting mechanism ight soil is risen in the UASB reaction unit.Sewage and feces of livestock and poultry carry out the anaerobic digestion reaction after whipping appts fully stirs.The biogas that reaction unit produces is delivered to gas storage holder after collection, refining plant dehydration desulfurization and impurity elimination.The natural pond slag regularly is disposed to dull and stereotyped filter tank and carries out solid-liquid separation, and solid part is produced fertilizer after mummification, and liquid portion returns water collecting basin, and the supernatant liquor automatic overflow of generation advances natural pond liquid storage pool can be directly used in field irrigation.
In this project the main raw material of biogas anaerobic fermentation be feces of livestock and poultry, can rotten rubbish, butcher high-moisture biomass such as sewage, COD, SOD and other composition index become the key that anaerobic ferment process is selected in these raw materials.The upflow anaerobic sludge blanket reactor main body is the container of interior dress particle anaerobic sludge, special-purpose gas, liquid, solid separation system is set at an upper portion thereof, it is triphase separator, it can make the anaerobion that keeps a large amount of high reactivities and good sedimentation function in the reactor, the efficient height of general anaerobic device on the technology, reduce investment outlay and floor space, so select the UASB biological treatment in this project for use.
UASB is up-flow anaerobic sludge blanket (Upflow Anaerobic Sludge Blanket), is the main body structures of anaerobic fermentation system.Its cardinal principle be organic pollutant in slip and the sewage under anaerobic through microbiological deterioration, change into gases such as methane, carbonic acid gas.Collection has the anaerobic sludge of a large amount of high-efficient granuleizations in up-flow anaerobic sludge blanket (UASB) reactor, can improve the COD clearance greatly, reduces the influent load in subsequent disposal stage, reduces the follow-up operation expense.As shown in Figure 4, mainly forming of UASB by following key component:
The water inlet water distribution system
The water inlet water distribution system is made up of a main water inlet tube 22 and many roots water distributing pipe 23, main water inlet tube reaches UASB reactor 24 bottoms, by along the equally distributed many roots water distributing pipe 23 uniformly distributing feed liquids of circumference, microorganism is fully contacted with raw material, and help the formation of granule sludge then.The water inlet water distribution system mainly is evenly distributed in slip in the whole reactor as far as possible, and has certain waterpower agitating function, is one of key of the efficient operation of reactor.Water distribution system adopts anti-blocking design in this project, has avoided the slip blocking pipe.
Reaction zone
Reaction zone comprises Sludge Bed district and sludge suspension district, and organism is decomposed by anerobe in this zone, makes the main position of reactor.
Triphase separator
Triphase separator is positioned at the anaerobic reactor middle and upper part, form by settling region, backflow seam and sealing gland, be immersed in below the slurry face for 24 one-tenth 55 ° with the UASB reactor, it is made up of gas trap and baffle, whole baffle forms a conical space, and the top connects gas trap, and the function of triphase separator is introduced gas trap with biogas exactly, the water of handling out is introduced exhalant region, solid particulate is imported reaction zone.Between baffle and gas trap, also placed a bridge breaker,, made MRT, helped the output of biogas than the big leap ahead of HRT in order to prevent that solid is floating and to go out.Its function is biogas, mud and liquid separately.Suspended substances such as mud reflux again to stitch through the settling region post precipitation and are back to reaction zone.
In this project, according to the concentration of suspension in the retort, determined the gap of triphase separator 27 the bests and gone out the section ratio of the water surface, make the sedimentation speed that enters the settling region and remain on the flco of mud in mutually keep the best.The internal precipitate district accounts for about 15~20% of cumulative volume.Design has determined that the inclination angle of triphase separator 27 is 55 ° according to the employing raw material in addition.Determined the area of separator bottom liquid-gas interface, the rate of release of biogas is defined as 2m 3/ (m 2H), the plugging rate of releasing tube is reduced to lower level.
As shown in Figure 6, the solar energy hot cell is mainly by solar energy collector, heat storage water tank, circulating line with control four parts automatically and form.Solar energy collector links to each other with heat storage water tank by circulating line, automatic control device; Equal mounting temperature sensor in solar energy collector import and export and the heat storage water tank.The heat collector of selecting in this project have anti-freezing, start fast, good heat insulation, heat shock resistance, advantage such as reliable, be installed on the roof in gasification workshop.Under the normal circumstances, native system adopts the control of multiple spot constant temperature to go up the operation scheme that water combines with temperature difference Control Circulation, and system water temperature is followed the trail of set(ting)value, guarantees to inject the water temperature of joining stock tank and meets the setting requirement.
It mainly is for the slip in the equalizing tank is heated to 30 ℃ that the biogas anaerobic fermentation system heats in the winter time, carry out mesophilic digestion after making it inject the UASB reactor, replenish the energy that loses owing to the reactor heat radiation simultaneously, guarantee that fermentation system carries out mesophilic digestion all the time, keep higher factor of created gase.Its theoretical heat demand amount is calculated as follows:
Q=c pmΔt
Wherein, Q---fermentation system heat demand amount;
c p---inject the level pressure specific heat capacity of mass of slip every day;
Inject the quality of slip m---every day;
The average temperature rising of Δ t---slip, generally be elevated to 35 ℃ from 0 ℃ winter, and generally be elevated to 35 ℃ from 15~20 ℃ other season.
Actual heat demand amount is calculated as follows:
Q′=Q/η 1η 2
Wherein, Q '---actual heat demand amount;
η 1---the heat exchange efficiency of boiler and interchanger;
η 2---the heat exchange efficiency of hot water in slip and the heat storage water tank in the equalizing tank.
Because heat storage water tank has good heat-insulating property, heat lost by radiation is very little, and after therefore slip was heated to design temperature in equalizing tank, the water temperature in the water tank generally still remained on 35~40 ℃.Good accumulation of heat effect greatly reduces the gas quantity that the heating of straw fuel gas boiler is consumed, and has shortened that cistern circulated water is heated to 75~80 ℃ of required heat-up times.As shown in Figure 5.Determining of the installation of solar energy collector and inclination angle
The solar energy optical-thermal system adopts forced circulation system in this project, as shown in Figure 6, its task is to collect sun power early spring in late autumn, winter, anaerobic fermentation system is heated, except that winter, the solar energy optical-thermal system all can guarantee the normal operation of methane fermentation system mesophilic digestion in this project in independent use in other season.Meteorological Characteristics according to Bang Jun town, Ji County, Tianjin, and above-mentioned season the sun power high angle Changing Pattern, through calculating, determine the best mounted angle a=54 ° 53 ' of solar energy collector in this project, and, calculate and determine suitable solar energy collector installation site according to this mounted angle.
Determining of solar energy collector area
As shown in Figure 7, the solar energy optical-thermal system adds heat should satisfy the whole heat demand amounts of methane fermentation system at non-winter operation, and carries out the heat supply of methane fermentation system as the auxiliary thermal source of biological fuel gas heating system in winter.According to the heat demand calculation result of methane fermentation system and the energy balance in the reactor, the heat demand Q of methane fermentation system every day in non-winter is about Q=430000keal.According to parameters such as heat demand amount, heat collector heating surface pitch angle, heating surface position angle, the interdependent rate of the sun, heat collector scale coefficient, tank and pipeline heat loss lead, draw the required evacuated solar collector of this project as calculated and be 16 altogether, total heat collector surface is long-pending to be 107m 2
According to the water yield demand of joining stock tank in this project, having designed a useful volume in this project is 6m 3The bottom surface be 1/4 the circle heat storage water tank, specification is 2m 2* 3m is installed in the biological fuel gas heating boiler room.Thermal insulation layer adopts the imported polyurethane integral foam of 60mm, and shell adopts.0.4mm color steel staking technology make.
The biomass energy heating system
Native system is the biological fuel gas of being produced by the gasification unit, through directly sending into the heating boiler firing system after the purification system purification, high-temperature fuel gas and secondary air carry out the hybrid power burning in the Straw Gas burner special of original creation, medium carries out heat exchange in high-temperature flue gas that produces and the stove, the water of medium after the heat exchange after solar heating is delivered to equalizing tank by water pump, the low temperature slip is heated to the optimum temps of mesophilic digestion by the coil pipe heat-exchange system.Gas fired-boiler is made up of burner, heat-exchange equipment, normal-pressure horizontal gas fired-boiler and electrical control cubicles and safety attachment, has time-delay and purges, lights a fire automatically, water level control, temperature-control device etc.The hot water that the hot water that system produces produces with the solar energy optical-thermal system injects joins stock tank, slurry temperature is adjusted to the optimum temps of mesophilic digestion.Straw fuel gas burner in this gas fired-boiler adopts premixed combustion mode (claiming dynamic combustion again).Adopt this burner to have following advantage: can use lower pressure air or warm air, still can guarantee flame stabilization under the high excess air coefficient, the possibility that flame is put out is reduced to minimum; The scope of application of combustion gas is big, when combustion gas quality changes, only needs to change the ratio of combustion gas and air.In addition, this burner has complete safety guard:
1, this burner has automatic firing mechanism, for removing the remaining combustion gas in the burner hearth, prevents deflagration, has designed the preceding time-delay of igniting and has purged, and promptly purges 15 seconds automatic firing mechanism starting ignition then before igniting earlier.
2, straw fuel gas is difficult for igniting when the cold conditions ignition trigger, so designed the little fire of first point, puts the mutual cover portfire of big fire with little fire then.
3, for guaranteeing safety, this burner design flame failure warning device, water level and temperature-control device.
4, because straw fuel gas can have a certain amount of tar, general external advanced person's burner all will be matched comparatively advanced magnetic valve when transforming, and prices are rather stiff, and this burner can make tar enter in the burner hearth with air-flow to burn, and the cost cost is lower.
After measured, this boiler rated heating capacity reaches 0.7MW, and thermal conversion device thermo-efficiency reaches more than 85%, does not take off fire, not tempering in the combustion processes, the rate 100% of catching fire, and every index meets the project re-set target fully.
The accurate mixing system of biological fuel gas and biogas
Native system comprises biogas gas-holder, biological fuel gas and compositions such as biogas mixing gas-holder, mixing blower fan and combustion gas capacity Monitoring systems.In the normal course of operation, master control system can be according to the capacity signal of biogas gas-holder and air mixture gas-holder, according to logic and the program start combustion gas conveying fan set, realize that the accurate certainty ratio of two kinds of gases is mixed, reach set(ting)value up to air-fuel mixture amount.
The air mixture distributing system
The combustion gas that the gasification unit produces mixes the back with the biogas that methane fermentation system produces and delivers to the user by gas transmission and distribution system in mixing gas storage holder.Gas transmission and distribution system comprise biogas gas-holder, biological fuel gas and biogas mixing gas-holder, auxiliary facility and underground (on) gas line network.
The major parts of gas transmission and distribution system
The effect of gas-holder is a certain amount of combustion gas of storage, keeps constant compression force, the stability with gas and assurance pressure during with the adjustment peak.Gas-holder has wet type, dry type (or vertical and horizontal) various ways, and its front and back end is provided with security device: liquid packing and spark arrester.During unit work, combustion gas enters gas-holder by liquid packing; When unit quit work, liquid packing stoped fuel gas return-flow.Spark arrester is installed on after the gas-holder, the end of gas pipe line, and its effect is to jeopardize gas-holder when stoping the pipe network tempering.
Gas line network
Gas line network is the tubing system with the fuel gas supply user, according to its position difference, can be divided into main pipeline network, Zhi Ganguan net, user's inlet tube and interior conduit etc.Heavenly Stems and Earthly Branches pipe adopts that shallow-layer is straight deposited buried to be located at undergroundly, and its pipe material can adopt steel pipe, cast iron pipe and plastics tubing.Because of plastics tubing has that corrosion-resistant, light weight, fluid flow resistance are little, long service life, easy construction, can coil, tensile strength is than advantages such as height, usually plastics tubings that adopt more.Native system is done, arm all adopts plastics tubing.
Auxiliary facility
Be to guarantee the safe operation of pipe network, and consider the needs of maintenance, wiring, in the suitable place of pipeline valve device, water collector are set, diffuse the auxiliary facility of necessity such as device.In addition, for these equipment are installed, also to build the types of functionality well in underground pipe network.The valve device is to be used for opening and closing pipe path or to regulate the equipment of pipeline internal combustion airshed, and used valve has gate valve, ball valve, stopcock etc.; Water collector is water vapour and the light oil branch that is used for getting rid of condensation in the gas pipeline, prevents the equipment of blocking pipe; Diffuse device and then be used for the gas that mixes in the discharge tube, to improve combustion gas purity.During pipelining certain slope should be arranged, water collector is located at lower, so that the moisture that will compile discharge, in case blocking pipe.
The family is connected to form by gas meter, purifier, valve, air mixture kitchen range successively with gas burning system.
Central authorities' integrated control system
This project comprises a plurality of parts such as biomass gasification system, biogas anaerobic fermentation system, solar energy optical-thermal system and biological fuel gas heating system and combustion gas mixing distributing system and forms, the systematic comparison complexity, therefore, effectively regulate and control for the running condition of each system of monitoring in time and to it, designed and developed central integrated control system in this project, realize the monitoring and efficient regulation and control operation of above-mentioned various piece, guaranteed the efficient linking and the operation of each system.
The configuration of monitoring data and transmitter
(1) biomass gasification system
The gasifying biomass outlet of still is equipped with temperature sensor, and Straw Gas is equipped with the Straw Gas flow and takes into account transmitter, the flow of Straw Gas when being used to measure combustion gas mixing to mixing in the gas-holder preceding pipeline;
(2) methane fermentation system
In acidification pool, equalizing tank, UASB reactor, water level sensor and temperature sensor are installed all, are regulated the control liquid level automatically by central integrated control system;
(3) solar energy optical-thermal system
Equal mounting temperature sensor in solar energy collector import and export, the heat storage water tank.
(4) biogas and biogas mixing system
In the biogas gas-holder He in the gas mixture gas-holder, liquid level sensor is installed all, is reflected two gas quantities in the gas-holder by the program of setting.In the outlet of biogas gas-holder under meter is set, is used for the flow signal of output biogas when two kinds of combustion gas mixing.
The design of Controlling System
This project adopts the central controller image data and the process of whole gasification station is controlled, data are uploaded to remote computer by LAN, and carry out data processing and device control by the software package that makes up by virtual instrument, when device fails, will report to the police etc.Central controller has the following advantages: 1) input signal can be that switch signal also can be a simulating signal; 2) the output port carrying capacity is strong; 3) wire is simple; 4) highly versatile, reliability height, good environmental adaptability; 5) processing ease, serviceability is good.
Device control and algorithm
(1) elimination of random error
The random error that environmental factors causes exists in the take off data of temperature sensor and flow sensor in the signal acquisition process owing to can adopt the superposed average method to be eliminated.Calculation formula is
x ‾ i = x ‾ i - 1 + x i - x i - 1 i
I is for to work as hits in the formula, i=2,3 ...
(2) flow rate calculation
Accumulative total total flux calculation formula is ∑ Q i=∑ Q I-1+ Q i, wherein: Q iBe present flow rate,
∑ Q I-1Be total flux last time.

Claims (10)

1. biological energy-marsh gas fermentation-solar energy integrated utilization system, mainly by the gasifying biomass unit, the biogas anaerobic fermentation unit, gas transmission and distribution and combustion gas subscriber unit are formed, it is characterized in that: also comprise central integrated control unit, the solar energy hot cell, biological fuel gas heat supply unit, the automatic mixed cell of biological fuel gas and biogas, central control unit is connected respectively with remaining element, the gasifying biomass unit links to each other with the automatic mixed cell of biogas with biological fuel gas heat supply unit and biological fuel gas respectively, the biogas anaerobic fermentation unit links to each other with the automatic mixed cell of biological fuel gas and biogas, biological fuel gas links to each other with the combustion gas subscriber unit with gas transmission and distribution with the automatic mixed cell of biogas, and the solar energy hot cell links to each other with the biogas anaerobic fermentation unit respectively with biological fuel gas heat supply unit.
2. biological energy-marsh gas fermentation-solar energy integrated utilization according to claim 1 system, it is characterized in that: described gasifying biomass unit is made up of feeder, gasification reacting furnace, gas purifier, electric control gear and blower fan, feeder, gasification reacting furnace, gas purifier and blower fan are in series, and electric control gear is connected by circuit with aforementioned each several part.
3. biological energy-marsh gas fermentation-solar energy integrated utilization according to claim 2 system, it is characterized in that: described gasification reacting furnace is made up of upper and lower body of heater two portions, be respectively equipped with charging opening on the upper furnace body, observe door and self closing door, be provided with cone-shaped body in the upper furnace body, be provided with cavity between cone-shaped body and the furnace body outer wall, the cavity bottom be provided with body of heater in the inlet pipe that communicates; The aspect ratio of lower furnace body is 1.5, and its top is reaction zone, and the body of heater border is provided with insulation of wall layer and water jacket, and the middle part is provided with grate body and escape pipe, and escape pipe is provided with temperature sensor; The bottom is grey chamber, and is provided with ash-removing door.
4. biological energy-marsh gas fermentation-solar energy integrated utilization according to claim 2 system, it is characterized in that: described gas purifier is mainly by housing be located at the intravital spray chamber of shell, gas liquid chamber, falling film absorption chamber, dehumidification chamber and form, gas liquid chamber is located at the bottom of spray chamber, the right side of gas liquid chamber and spray chamber is located in the falling film absorption chamber, and the right side of falling film absorption chamber is located in the dehumidification chamber; Housing top is provided with inlet pipe, communicates in inlet pipe and the spray chamber, is provided with spray equipment in the spray chamber; Be provided with the spination riser that gos deep under water below the dividing plate between gas liquid chamber and falling film absorption chamber; Indoor impeller and the dividing plate of being provided with of falling film absorption, the bottom is provided with sewage door; Top, dehumidification chamber is provided with the air outlet.
5. biological energy-marsh gas fermentation-solar energy integrated utilization according to claim 1 system, it is characterized in that: described biogas anaerobic fermentation unit is mainly by pre-processing device, the UASB reactor, refining plant composes in series successively, at pre-processing device and UASB reactor water level sensor and temperature sensor are installed all, pre-processing device comprises water collecting basin, barrier and submersible sewage pump, barrier is arranged on the water collecting basin ingress, submersible sewage pump is located in the water collecting basin, the rising pipe of submersible sewage pump is connected in the UASB reactor, and the biogas that produces in the UASB reactor is through collecting, be delivered to gas storage holder after refining plant dehydration desulfurization and the impurity elimination; Described UASB reactor is made up of water inlet water distribution system, reaction zone and triphase separator, described water inlet water distribution system is made up of a main water inlet tube and many roots water distributing pipe, main water inlet tube is located at the UASB reactor bottom, is evenly distributed with many roots water distributing pipe along one week of main water inlet tube; Reaction zone comprises Sludge Bed district and sludge suspension district; Triphase separator is positioned at UASB reactor middle and upper part, become 55 ° to be immersed in below the slurry face with the UASB reactor, it is made up of gas trap and baffle, whole baffle forms a conical space, the top connects gas trap, also is provided with a bridge breaker between baffle and gas trap.
6. biological energy-marsh gas fermentation-solar energy integrated utilization according to claim 1 system, it is characterized in that: described solar energy hot cell is made up of solar energy collector, heat storage water tank, circulating line and automatic control device four parts, and solar energy collector links to each other with heat storage water tank by circulating line, automatic control device; Equal mounting temperature sensor in solar energy collector import and export and the heat storage water tank.
7. biological energy-marsh gas fermentation-solar energy integrated utilization according to claim 1 system, it is characterized in that: described biological fuel gas heat supply unit is made up of gas heating boiler and coupled intake ducting and heat supply pipeline.
8. biological energy-marsh gas fermentation-solar energy integrated utilization according to claim 1 system, it is characterized in that: the automatic mixed cell of described biological fuel gas and biogas is mainly by the biogas gas-holder, biological fuel gas and biogas mixing gas-holder, mixing blower fan and combustion gas capacity Monitoring systems forms, combustion gas capacity Monitoring systems links to each other with biogas mixing gas-holder with biological fuel gas with the biogas gas-holder respectively, in the pipeline of Straw Gas before mix gas-holder, the Straw Gas flow is installed and takes into account transmitter, in the biogas gas-holder He in the gas mixture gas-holder, liquid level sensor is installed all, be provided with under meter in the outlet of biogas gas-holder, mix blower fan and be located between air mixture gas-holder and the biogas gas-holder, the gas-holder front and back end is respectively equipped with liquid packing and spark arrester.
9. biological energy-marsh gas fermentation-solar energy integrated utilization according to claim 1 system, it is characterized in that: described gas transmission and distribution and combustion gas subscriber unit comprise auxiliary facility, gas line network and family gas-fired equipment, on auxiliary facility installation and the gas line network, gas line network links to each other with gas-fired equipment with the family; Described auxiliary facility comprises the function well and within it valve device, water collector are installed, are diffused device; The valve device comprises gate valve, ball valve and stopcock, and water collector is installed on the lower with certain slope pipeline; The family comprises gas meter, purifier, valve, the air mixture kitchen range that connect successively by pipeline with gas-fired equipment.
10. biological energy-marsh gas fermentation-solar energy integrated utilization according to claim 1 system, it is characterized in that: the integrated control unit of described central authorities comprises transmitter, under meter and control module, and transmitter and under meter are arranged on each component units of system; Control module comprises data acquisition module, data central processing module, data feedback output module, and data acquisition module is connected with transmitter, under meter by line.
CNU2007200226130U 2007-05-25 2007-05-25 Biological energy-marsh gas fermentation-solar energy integrated utilization system CN201062265Y (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
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CN101949555A (en) * 2010-06-23 2011-01-19 山西三益科技有限公司 Solar energy and gas integrating heating device
CN101063080B (en) * 2007-05-25 2011-06-22 山东百川同创能源有限公司 Biological energy-marsh gas fermentation-solar energy integrated utilization system
CN101629139B (en) * 2009-04-10 2012-01-04 云南榕正生物能源有限公司 Large-scale solar energy medium-temperature solid-liquid anaerobic fermentation and gas storage device
CN102444317A (en) * 2011-09-05 2012-05-09 大连德昌能源环境发展有限公司 System integration technology for ecological barrack
CN105462621A (en) * 2015-12-19 2016-04-06 榆林学院 Pulverized coal-biogas residue co-gasification system under CO2/H2O steam atmosphere
CN105462620A (en) * 2015-12-19 2016-04-06 榆林学院 Pulverized coal-biogas residue co-gasification and synthesis gas preparing system
CN105757715A (en) * 2016-03-11 2016-07-13 西北农林科技大学 Automatic ignition system of boiler and control method thereof
CN106369814A (en) * 2016-08-29 2017-02-01 李其锐 Marsh gas heat supply system
CN107487843A (en) * 2017-10-10 2017-12-19 重庆大学 A kind of vacuous solar energy heat collecting type open air upflow anaerobic sludge blanket reactor
CN110331005A (en) * 2019-06-13 2019-10-15 华北理工大学 A kind of biomass comprehensive utilizes system and its control method
CN111687182A (en) * 2020-06-22 2020-09-22 北海市传创环保科技有限公司 Carbon dioxide zero-emission type system for energy utilization of organic waste

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Publication number Priority date Publication date Assignee Title
CN101063080B (en) * 2007-05-25 2011-06-22 山东百川同创能源有限公司 Biological energy-marsh gas fermentation-solar energy integrated utilization system
CN101629139B (en) * 2009-04-10 2012-01-04 云南榕正生物能源有限公司 Large-scale solar energy medium-temperature solid-liquid anaerobic fermentation and gas storage device
CN101949555A (en) * 2010-06-23 2011-01-19 山西三益科技有限公司 Solar energy and gas integrating heating device
CN102444317A (en) * 2011-09-05 2012-05-09 大连德昌能源环境发展有限公司 System integration technology for ecological barrack
CN105462620B (en) * 2015-12-19 2018-03-30 榆林学院 Coal dust joint biogas residue gasifies and prepared synthesis gas system altogether
CN105462621A (en) * 2015-12-19 2016-04-06 榆林学院 Pulverized coal-biogas residue co-gasification system under CO2/H2O steam atmosphere
CN105462620A (en) * 2015-12-19 2016-04-06 榆林学院 Pulverized coal-biogas residue co-gasification and synthesis gas preparing system
CN105462621B (en) * 2015-12-19 2018-03-30 榆林学院 CO2/H2The common gasification system of coal dust joint biogas residue under O steam atmosphere
CN105757715A (en) * 2016-03-11 2016-07-13 西北农林科技大学 Automatic ignition system of boiler and control method thereof
CN106369814A (en) * 2016-08-29 2017-02-01 李其锐 Marsh gas heat supply system
CN106369814B (en) * 2016-08-29 2019-10-22 李其锐 A kind of biogas heating system
CN107487843A (en) * 2017-10-10 2017-12-19 重庆大学 A kind of vacuous solar energy heat collecting type open air upflow anaerobic sludge blanket reactor
CN110331005A (en) * 2019-06-13 2019-10-15 华北理工大学 A kind of biomass comprehensive utilizes system and its control method
CN111687182A (en) * 2020-06-22 2020-09-22 北海市传创环保科技有限公司 Carbon dioxide zero-emission type system for energy utilization of organic waste

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