CN207483762U - Large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system - Google Patents
Large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system Download PDFInfo
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- CN207483762U CN207483762U CN201721477131.4U CN201721477131U CN207483762U CN 207483762 U CN207483762 U CN 207483762U CN 201721477131 U CN201721477131 U CN 201721477131U CN 207483762 U CN207483762 U CN 207483762U
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Abstract
The utility model discloses a kind of large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation systems, the system heats zymotic fluid using external heat source, multiple temperature sensors are provided on fermentation tank wall, in sustained height, material circulation pipe mouth is set, the temperature (or temperature difference) of multiple temperature sensors independently can enter heat exchanger with the material of Collaborative Control different fermentations tank height, zymotic fluid after heating postbacks fermentation tank and ensures that temperature of charge is constant in tank, ensures the fermentation efficiency of fermentation tank and the stability of production biogas.The utility model solves the limitation of traditional large fermentation tank thermal compensation mode, improve fermentation system stability, suitable for rural area and farm's livestock and poultry feces integrated treatment, stalk comprehensive utilization, the project of the large-scale medium and high temperature form anaerobic fermentation methane in fields such as city kitchen and the comprehensive utilization of other organic wastes, is with a wide range of applications and notable social benefit.
Description
Technical field
The utility model is related to a kind of large-scale complete hybrid marsh gas anaerobic fermentation tank (CSTR), in particular to a kind of large-scale complete
Mixing type anaerobic marsh-gas fermentation tank thermal compensation system.
Background technology
With the gradual reinforcement to environmental protection, people's constantly profit in various manners breaks environment to reduce industrial and agricultural production
It is bad.The utilization of biomass resource is increasingly taken seriously, and is comparatively fast developed in the past 10 years, is completed more than 20,000 large and medium-sized natural ponds
Gas engineering, the biogas generated including the methods of processing feces of livestock and poultry and various productions, sanitary sewage, garbage loading embeading.
Before 2007, the investment overwhelming majority of the country in terms of biogas is all used for household biogas construction.As rural area passes through
Ji social development and agricultural sector structure adjustment, part family are gradually transferred to Animal Raising Zone, intensive culture with aquaculture model
Enterprise, so that for part household biogas without raw material, many resources focus on cultivation plant area, intensive culture enterprise.Needle
To these situations, country starts to support large and medium-sized biogas engineering, and government investment biogas construction is used for the investment of household biogas at present
Ratio general 50%, 20%~30% is used for Construction of Service System, remaining is used for large and medium-sized biogas engineering.From government investment structure
Situation of change from the point of view of, large and medium-sized biogas engineering growth momentum is powerful.
On the other hand, the domestic waste that urbanization process is brought, particularly kitchen garbage yield is increasing, part
House refuse for filling up and power generation by waste combustion, but the kitchen garbage of large-scale catering and centralized collection fill up and burn it is few,
It can also concentrate producing methane through anaerobic fermentation mostly.
The high biochemical waste water processing of field of industrial waste water treatment, the particularly content of organic matter, with environmental requirement increasingly
Height, miniature biochemical sewage treatment plant operating cost significantly increase, and the process acceleration of chemical industrial park allows industrial wastewater centralization to discharge
Processing also objectively promotes concentration and builds large and medium-sized biogas engineering.
It is middle to throw what consultant issued《The biogas industry investment analysis of 2016~the year two thousand twenty China and Potential Prediction report》It points out, arrives
The year two thousand twenty, the potentiality of China's industry association biogas will be 215 billion cubic meters, be 2 times in 2001；Agricultural digester gas potentiality are up to
200 billion cubic meters.As complete for generating electricity, by 1.6 degree of calculating of every cubic metre of marsh gas power generation, the marsh gas power generation amount that only industrial or agricultural generates
Just more than 66,000,000,000 degree.From now on, biogas cogeneration of heat and power will have very big development space.
The core of biogas engineering is anaerobic fermentation, and anaerobic ferment process mainly has：Plug flow reactor (PFR), high concentration
Plug flow type technique (HCF), is thoroughly mixed formula anaerobic reactor (CSTR) and upflow type anaerobic at upflow solids reactor (USR)
Sludge Bed (UASB) totally 5 kinds of technique.In the case where suspension content is higher, economic benefit and technology it is most suitable for CSTR with
USR, and CSTR is particularly suitable for the coproduction of thermoelectricity fertilizer (CHP) zero-emission mode playback.
From the energy and Environmental-protection comprehensive using angle, energy environment protection type certainly will become to be handled livestock and poultry feces, kitchen and will have from now on
The trend of machine field of wastewater anaerobic methane engineering, so most of in newly-built large and medium-sized biogas engineering use CSTR techniques,
Mainly there are four the technological parameters of controlling for the process control condition of CSTR biogas fermentations：Broth temperature, nutrients, has PH
Malicious harmful substance.By in three kinds of mesophilic anaerobic bacterias of difference (mesophilic 5~20 DEG C mesophilic 20~42 DEG C mesophilic 42~75 DEG C) engineering points
For room temperature anaerobism (15~30 DEG C), anaeration in normal temperature (30~45 DEG C), three kinds of high temperature anaerobic (45~60 DEG C).Temperature is to biogas fermentation
It is particularly important, when temperature is less than optimal lower limit temperature, often decline 1 DEG C, efficiency declines 11%.In above range, temperature 1~
3 DEG C of minor fluctuations influence anaerobic reaction unobvious, but temperature change is excessive (rapidly changing), then can make zymophyte vigor
The problems such as declining, generating acid accumulation.
Existing technique is utilized in hydrolysis desanding basin and zymotic fluid is added using steam or hot water circuit mode
Heat enters fermentation tank after being heated to fermentation preset temperature, and digester ambient temperature is as the four seasons substitute or hand over round the clock
It changes and changes, to ensure that digester can run large size under constant temperature, it is necessary to fermentation tank be kept the temperature, fermentation tank accumulates often
Up to 1000m3Even thousands of cubes, the heat preservation of fermentation tank can not still can guarantee constant temperature inside large fermentation tank, so must adopt
With the mode to fermentation tank thermal compensation to ensure constant temperature in fermentation tank, fermentation tank heat preservation at present mainly uses two ways：First
Kind is that setting heating coil directly carries out thermal compensation to zymotic fluid in fermentation tank, and another way is exactly in fermentation tank and insulating layer
Between setting heating coil or other heating facilities thermal compensation is done to fermentation tank, indirectly to fermentation tank keep the temperature.
Both the above mode is widely used in the large and medium-sized biogas construction built at present, but exists and much ask
Topic.
First way, by hot water or other heating agents by the way of the heating of tank inner coil pipe, in heat transfer process, animal dung
Although the high zymotic fluid of the solid contents such as dirt, kitchen garbage will not be deposited on coil pipe quickly under stirring, for a long time
After use, guanite can be formed on heating coil, once being formed, the mechanical agitation in fermentation tank can not remove, and be deposited on and add
Guanite can seriously affect the efficiency of heating surface on hot coil, serious to cause not heating completely, cause fermentation tank normal
Operation.Heating coil is generally fixed to inside fermentation tank, and disassembly, cleaning are hardly possible, and the general area of heating coil is larger, adopts
It is also very big with manual cleaning workload after shut-down, and easily generate safety accident.
The second way is kept the temperature using indirect heating manner, and hot-water coil pipe or resistance wire heat fermentation tank, play perseverance
Temperature effect, but the hot-water coil pipe of large area and heating equipment, will certainly bring problems to the heat preservation construction of fermentation tank, and
And using the coil pipe of hot water class heat exchange medium be easy to that leak occurs, destroy insulating layer.So stabilization of this thermal compensation mode
Property is bad.
The first kind thermal compensation mode that document CN2586698Y is introduced is heated, this thermal compensation using rotary inner coil pipe
Mode is suitable for small-sized fermentation tank, and it is difficult disassembly, cleaning that large fermentation tank makes according to the document, and thermal compensation uses continuity disk
Pipe exchanges heat, and hot water is continuously recycled to abhiseca from tube bottom, and heat exchanger tube route is long uncontrollable so as to cause heat transfer effect effect, for
The large-scale CSTR fermentation tanks top and the bottom temperature difference is very big, and this continuity gradient thermal compensation obviously cannot be guaranteed full tank constant temperature, vulcanize
Repaying effect cannot ensure.Document 201046964Y improves the thermal compensation mode of document CN2586698Y, and use is additional
Serpentine manner, and consider the fermentation tank upper and lower temperature difference problem of large-scale CSTR mode of heatings, but using outer coil pipe heat into
The mode of row thermal compensation there are the problem of it is also very much, above-mentioned document also without solve largely using outer coil pipe influence fermentation tank protect
The problems such as damage that temperature and the leak of coil pipe part are brought to fermentation tank insulating layer.
Invention content
The utility model provides one kind for the deficiency of existing large and medium-sized anaerobic methane fermentation tank thermal compensation technique at present
Large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system, the system and method solve large-sized biogas hybrid anaerobic fermentation tank entirely
(CSTR) the fermentation tank thermal compensation defective workmanship in medium temperature (30 DEG C~45 DEG C) and high temperature (45 DEG C~60 DEG C) fermentation process ensures
Material constant temperature in fermentation tank, so as to ensure the fermentation tank aerogenesis stability of large and medium-sized anaerobic methane engineering.The system is used for medium temperature
And high temperature anaerobic biogas engineering full-mixing type anaerobic fermentation tank thermal compensation, available for rural area livestock and poultry feces and farmland stalk synthesis profit
With the high concentrated organic wastewater in the fields such as organic wastes integrated treatment, chemical industry, light industry, the biochemical industries such as, food wastes
Useless solid comprehensive utilization processing.Compensation system and process are applicable not only to medium temperature, high temperature anaerobic used by the utility model
Biogas fermentation is applied also in the large-scale biochemical reaction not higher than 80 DEG C, to reactor integral thermal compensation field
To achieve the above object, a kind of large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system provided by the utility model
System the system comprises fermentation tank, is from top to bottom spaced apart on the fermentation tank wall and is equipped with the outlet of multiple fermentation liquid circulations, institute
It states and biogas slurry outlet is offered on fermentation tank wall, the biogas slurry outlet is located at the lower section of nethermost fermentation liquid circulation outlet, institute
It states fermentation tank wall top and offers overflow port, the fermentation tank wall top is additionally provided with side wall fermentation liquid circulation and passes back into
Mouthful, and the side wall fermentation liquid circulation reflux inlet is located at overflow port hereinafter, the fermentation tank wall lower part is additionally provided with waste
With organic matter class material inlet, it is described fermentation tank wall on be from top to bottom arranged at intervals with multiple thermometer bosses, the temperature
It is provided with thermometer, the thermometer boss number and installation site on meter interface to correspond with fermentation liquid circulation outlet, institute
It states and is from top to bottom opened on the fermentation tank wall between side wall fermentation liquid circulation reflux inlet and waste and organic matter class material inlet
Equipped with multiple thermometer bosses, and the thermometer boss is in identical height, the hair with the outlet of corresponding fermentation liquid circulation
The vertical reflux inlet of fermentation liquid circulation, biogas hole, stalk material inlet and liquid level of fermentation tank is provided on the tank deck of fermentation tank to show
Show that control sensor, the waste and organic matter class material inlet and stalk material inlet connect respectively with two level desilting homogeneous pond
It connects.The overflow port is connect with second order fermentation tank, and the biogas slurry outlet is connect by discharging pump with second order fermentation tank, each to ferment
Liquid loop exit is connected by tube side one end of circulating pump and heat exchanger, and the tube side other end of the heat exchanger is connected separately with
Side wall fermentation liquid circulation liquid reflux inlet and the vertical reflux inlet of fermentation liquid circulation, the shell side both ends of the heat exchanger connect respectively
There is return water to remove hot tank and hot water storage tank；
In large-scale CSTR constant temperature thermal compensation heat exchanger using external pipe type (tube-sheet type or other be suitable for hot water/have one
Determine the heat exchanger of the technique zymotic fluid heat exchange system of solid content) mode carry out thermal compensation, the heat exchange power calculating of heat exchanger takes
Full tank maximum heat loss under the highest hour temperature difference in fermentation tank location, calculating process consider the most harsh environment temperature difference and most
Harsh fermentation tank thermal environment obtains maximum unit heat loss of the fermentation tank in the case where having external thermal insulation heat preservation, it is alternatively that
The foundation of external heat exchanger heat exchange power, while fully consider the heat exchange efficiency of heat exchanger.
Further, it is provided with circulating pump between the fermentation liquid circulation outlet and heat exchanger.
Still further, it is additionally provided with discharging pump between the biogas slurry outlet and second order fermentation tank.
Still further, the second order fermentation tank is parallel with biogas slurry temporary storage tank.
Still further, the biogas hole is connected with methane purifying system.
Still further, the fermentation liquid circulation outlet is 3~5.The number of fermentation liquid circulation outlet is with fermentation tank
Height can increase and decrease, fermentation tank height often increases by 3~5m, and corresponding zymotic fluid thermal compensation outlet increases by 1, while in material
The sustained height of outlet sets a temperature sensor according to above-mentioned increase.
Three fermentation liquid circulation outlets of upper, middle and lower are independently arranged on fermentation tank tank skin, the nozzle of fermentation liquid circulation outlet is set
Electromagnetic valve is put, can individually control corresponding circulation line ON cycle, heat exchanger individually gives three discharge port objects of fermentation tank
Material carries out circulating-heating；If zymotic fluid bulk temperature is relatively low in fermentation tank simultaneously, multiple nozzles can also be controlled to open simultaneously,
Fermentation liquid circulation exchanges heat to heat exchanger, and heat exchanger carries out circulating-heating to three discharge port materials of fermentation tank simultaneously, passes through single tube
Line recycles and multi-pipeline integrally recycles the whole constant temperature for ensureing fermentation tank and local constant temperature, so as to ensure biological inoculum in fermentation tank
Activity, ensure that biogas is stablized and generate, while ensure the maximum conversion rate of zymotic fluid anaerobic digestion.
Still further, the thermometer boss is 3~5；The number of thermometer boss can with the height of fermentation tank
With increase and decrease, fermentation tank height often increases by 3~5m, and corresponding thermometer boss increases by 1, temperature is provided on the thermometer boss
Degree meter, the temperature are calculated as temperature sensor, and the temperature sensor is connected with temperature signal central control system.
The type of temperature sensor is measured as foundation to meet accurate (1~2 DEG C), while takes into account temperature transmission and control work(
Can, to guarantee to react the temperature of charge of fermentation tank certain height, so as to fulfill multipoint temperature monitoring, the work of multiple spot independent heating
(signal of i.e. each temperature sensor can individually control valve open and close skill thinking, the signal of multiple thermometer bosses
Corresponding valve opening and closing can be controlled simultaneously), ensure that fermentation tank bulk temperature is constant in anaeration in normal temperature or high temperature anaerobic
Within the temperature range of fermentation tank setting, while it is relative constant to take into account fermentation tank local temperature.
Still further, the two level desilting homogeneous pond and waste and organic matter class material inlet and stalk material inlet
Fermentation raw material pipeline Electronic control is provided on pipeline between being provided between fermentation raw material pipeline Electronic control valve module
Valve module, the fermentation raw material pipeline Electronic control valve module are included by two level desilting homogeneous pond to waste and organic matter class material
Foreline valve, control valve and the postposition valve set on the pipeline of Way in, the fermentation raw material pipeline Electronic control valve module is also
The by-passing valve on pipeline being arranged in parallel including the control pipeline formed with foreline valve, control valve and postposition valve, the control valve
It is connected with material signal central control system.
Still further, between the waste and organic matter class material inlet and fermentation raw material pipeline Electronic control valve module
It is provided with waste and organic matter class material switch valve, the stalk material inlet and fermentation raw material pipeline Electronic control valve module
Between be provided with stalk material switch valve.
Still further, the fermentation liquid circulation is exported is both provided with fermentation cycle liquid pipe on the pipeline between circulating pump
Way outlet valve and fermentation liquid circulation pipe-line control valve (fermentation liquid circulation pipe-line control valve quantity and the number of fermentation liquid circulation outlet
It determines, they can be opened individually or simultaneously)；The fermentation liquid circulation pipe-line control valve connects with circulation fluid signal central control system
Logical, circulation fluid signal central control system receives the signal from temperature signal central control system, after central control system is handled, by recycling
The switch of liquid signal central control system control fermentation liquid circulation pipe-line control valve and the switch of circulating pump.
The process of above-mentioned large size full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system, includes the following steps：
1) waste and organic matter class material enter fermentation through waste and organic matter class material inlet in two level desilting homogeneous pond
Stalk material enters through stalk material inlet in fermentation tank in tank or in two level desilting homogeneous pond；
2) above-mentioned material carries out continuing fermentation in fermentation tank, and fermentation obtains biogas slurry and is delivered to second order fermentation by biogas slurry outlet
Tank or biogas slurry temporary storage tank；Fermentation tank top enters second order fermentation tank by the overflowing liquid that overflow port overflows or biogas slurry is kept in
Tank, the biogas that ferment tank generates in the process enter methane purifying system by biogas hole；
3) during continuing fermentation, when observing that liquid level of fermentation tank is excessively high by peephole, material signal central control system
Control valve is controlled to close, when liquid level of fermentation tank is too low, liquid level of fermentation tank display control sensor control discharging pump is closed；
4) during continuing fermentation, if the thermometer inspection on fermentation tank on one or more arbitrary thermometer boss
The fermentation jar temperature value in the region less than setting fermentation temperature lower limiting value DEG C when, temperature signal is transmitted in temperature signal and controls
System, temperature signal central control system will control signal to pass to circulation fluid signal central control system, circulation fluid signal central control system control
The corresponding fermentation liquid circulation pipe-line control valve of sustained height processed is opened, meanwhile, circulation fluid signal central control system open the circulation pump；Hair
Zymotic fluid circulation fluid enters through circulating pump in the tube side of heat exchanger, meanwhile, enter in heat exchanger shell pass from hot water in hot water storage tank,
Fermentation liquid circulation liquid and hot water carry out cold and hot conversion, and the water after heat exchange enters return water by the heat exchanger shell pass other end and removes hot tank
In, the fermentation liquid circulation liquid after heat exchange is brought out again by the tube side of heat exchanger is another, passes through side wall fermentation liquid circulation reflux inlet
Or the vertical reflux inlet of fermentation liquid circulation is back in fermentation tank；
Material for heat exchanger heat exchange is flowed back vertically by side wall fermentation liquid circulation reflux inlet or fermentation liquid circulation
Entrance returns to fermentation tank, and the advantage that inventor thinks to participate in cycle using side wall fermentation liquid circulation reflux inlet is recycle stock
Closed cycle can save static energy in cyclic process, the unlatching power of the circulation pump power of cyclic process be reduced, when by zymotic fluid
It recycles vertical reflux inlet and participates in cycle, advantage is, zymotic fluid upper strata liquid level can be generated and washed away, hydronic same
When, it prevents lightweight fermentation materials from floating to top to a certain extent and crusts；Side wall fermentation liquid circulation reflux inlet and zymotic fluid follow
The vertical reflux inlet alternative of ring；
5) during continuing fermentation, if the thermometer inspection on fermentation tank on one or more arbitrary thermometer boss
When the fermentation jar temperature value in the region is back to fermentation temperature lower limiting value, temperature signal is transmitted to temperature signal central control system, temperature
Degree signal central control system will control signal to pass to circulation fluid signal central control system, and circulation fluid signal central control system controls same height
Corresponding fermentation liquid circulation pipe-line control valve is spent to close, meanwhile, circulation fluid signal central control system closes circulating pump, closes hot water storage
Hot water effluent's valve of tank, heat exchanger are stopped；
6) during continuing fermentation, the temperature of different height in fermentation tank is monitored by the thermometer on thermometer boss
Spend, repeatedly step 4)~5) operation, so as to ensure fermentation tank whole constant temperature, ensure that fermentation system is stablized.
The beneficial effects of the utility model are：
1) on the one hand the utility model solves built-in heating coil heating process zymotic fluid and is deposited on heat exchange coil
On the other hand problem solves the problems, such as that external heating coil hot water circuit leakage and heating coil influence insulating layer in itself, solve
The constant temperature heating compensation problem of large fermentation tank, and pass through Multipoint temperature-control, the mode of multipoint circulation, on large-scale CSTR fermentation tanks
Lower excessive temperature differentials problem has done technological improvement.
2) the utility model heat exchange heat source is the cylinder road water of generating set, on the one hand the recirculated water of generating set can be used for original
Material pretreatment, on the one hand for the process requirements of the utility model, the utility model is exchanged heat using external heat exchanger forced circulation
Mode can guarantee that cylinder road water return water temperature is relative constant, ensure generator do not need to Wai Jiagang roads water temperature-reducing heat-exchange device or
Person adds normal operation under the premise of normal-temperature water, and generating set cylinder road water cyclical stability side is utilized and ensure in heat integration
Face, also superior to traditional mode.
Description of the drawings
Fig. 1 is the utility model large size full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system diagram；
Fig. 2 is the detail view of fermentation tank；
In figure, fermentation tank 1, fermentation liquid circulation outlet 1.1, top fermentation liquid circulation outlet 1.1a, middle part fermentation liquid circulation
Export 1.1b, lower part fermentation liquid circulation outlet 1.1c, biogas slurry outlet 1.2, overflow port 1.3, side wall fermentation liquid circulation reflux inlet
1.4th, waste and organic matter class material inlet 1.5, thermometer boss 1.6, upper temp meter interface 1.6a, middle portion temperature meter interface
1.6b, temperature of lower meter interface 1.6c, the vertical reflux inlet 1.7 of fermentation liquid circulation, biogas hole 1.8, stalk material inlet
1.9th, liquid level of fermentation tank display control sensor 1.10, two level desilting homogeneous pond 2, waste and organic matter class material switch valve 2.1,
Stalk material switch valve 2.2, second order fermentation tank 3, heat exchanger 4, return water go hot tank 5, hot water storage tank 6, circulating pump 7, discharging
Pump 8, biogas slurry temporary storage tank 9, methane purifying system 10, temperature signal central control system 11, fermentation raw material pipeline Electronic control valve module
12nd, foreline valve 12.1, control valve 12.2, postposition valve 12.3, by-passing valve 12.4, material signal central control system 13, fermentation cycle liquid
Tube outlet valve 14, fermentation liquid circulation pipe-line control valve 15, circulation fluid signal central control system 16.
Specific embodiment
In order to preferably explain the utility model, the main of the utility model is furtherd elucidate below in conjunction with specific embodiment
Content, but the content of the utility model is not limited solely to following embodiment.
Embodiment 1
Large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system as shown in Figure 1, the system comprises total volumies to be
3800m3Carbon steel welding fermentation tank 1, using medium temperature CSRY techniques, abhiseca dress stirring motor speed reducer is stirred using three layers of paddle
Mix device, fermentation tank 1 diameter about 17m, height (belt stirrer conical section) about 19.5m；
It is from top to bottom spaced apart on 1 outer wall of fermentation tank and is equipped with top fermentation liquid circulation outlet 1.1a, middle part fermentation liquid circulation
1.1b and lower part fermentation liquid circulation outlet 1.1c are exported, is offered on 1 outer wall of fermentation tank of lower part fermentation liquid circulation outlet 1.1c
Biogas slurry outlet 1.2,1 outer wall top of fermentation tank offer overflow port 1.3, and the 1 outer wall top of fermentation tank is additionally provided with side wall hair
Zymotic fluid circulating reflux entrance 1.4, and the side wall fermentation liquid circulation reflux inlet 1.4 is located at overflow port 1.3 hereinafter, fermentation tank 1
Outer wall lower part is additionally provided with waste and organic matter class material inlet 1.5；
1 outer wall of fermentation tank between side wall fermentation liquid circulation reflux inlet 1.4 and waste and organic matter class material inlet 1.5
On from top to bottom offer upper temp meter interface 1.6a, middle portion temperature meter interface 1.6b, temperature of lower meter interface 1.6c, and temperature
Degree meter 1.6 installation position of interface is in identical height with corresponding fermentation liquid circulation outlet 1.1；On each thermometer boss 1.6
It is provided with temperature sensor,
The vertical reflux inlet 1.7 of fermentation liquid circulation is provided on the tank deck of fermentation tank 1, biogas hole 1.8, stalk material enter
Mouth 1.9 and liquid level of fermentation tank display control sensor 1.10, biogas hole 1.8 is connected with methane purifying system 10；
Waste and organic matter class material inlet 1.5 and stalk material inlet 1.9 connect respectively with two level desilting homogeneous pond 2
It connects, overflow port 1.3 is connect with second order fermentation tank 3, and biogas slurry outlet 1.2 is connect by discharging pump 8 with second order fermentation tank 3, Mei Gefa
Zymotic fluid loop exit 1.1 is connect by circulating pump 7 with tube side one end of heat exchanger 4, and the tube side other end of heat exchanger 4 connects respectively
It is connected to side wall fermentation liquid circulation liquid reflux inlet 1.4 and the vertical reflux inlet 1.7 of fermentation liquid circulation, the shell side of the heat exchanger 4
Both ends are connected separately with return water and remove hot tank 5 and hot water storage tank 6.It is additionally provided with out between biogas slurry outlet 1.2 and second order fermentation tank 3
Material pump 8.Second order fermentation tank 3 is parallel with biogas slurry temporary storage tank 9.
It is set between two level desilting homogeneous pond 2 and waste and organic matter class material inlet 1.5 and stalk material inlet 1.8
Fermentation raw material pipeline Electronic control valve module 12, the fermentation raw material pipeline Electronic control valve group are provided on pipeline between having
Part 12 includes the foreline valve by being set on the pipeline in 1.5 direction of two level desilting homogeneous pond 2 to waste and organic matter class material inlet
12.1st, control valve 12.2 and postposition valve 12.3, the fermentation raw material pipeline Electronic control valve module 12 further includes and foreline valve
12.1st, the by-passing valve 12.4 on the pipeline that the control pipeline that control valve 12.2 and postposition valve 12.3 are formed is arranged in parallel, the control
Valve 12.2 processed is connected with material signal central control system 13.
Waste is provided between waste and organic matter class material inlet 1.5 and fermentation raw material pipeline Electronic control valve module 12
With organic matter class material switch valve 2.1, the stalk material inlet 1.8 and fermentation raw material pipeline Electronic control valve module 12 it
Between be provided with stalk material switch valve 2.2.
Top fermentation liquid circulation outlet 1.1a, middle part fermentation liquid circulation outlet 1.1b and lower part fermentation liquid circulation outlet 1.1c
Fermentation cycle liquid pipeline outlet valve 14 and fermentation liquid circulation pipe-line control valve 15 are both provided on pipeline between circulating pump 7
(it is top fermentation liquid circulation pipe-line control valve 15a, middle part fermentation liquid circulation pipe-line control valve 15b and lower part fermentation liquid circulation
Pipe-line control valve 15c)；Fermentation liquid circulation pipe-line control valve 15 is connected with circulation fluid signal central control system 16.
The utility model additionally provides a kind of process of large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system, packet
Include following steps：
1) waste in two level desilting homogeneous pond 2 and organic matter class material through waste and organic matter class material inlet 1.5 into
Enter in fermentation tank 1；
2) above-mentioned material carries out continuing fermentation in fermentation tank 1, and fermentation obtains biogas slurry and is delivered to two level by biogas slurry outlet 1.2
Fermentation tank 3 and biogas slurry temporary storage tank 9；Fermentation tank top by the overflowing liquid that overflow port 1.3 overflows enter second order fermentation tank 2 or
Biogas slurry temporary storage tank 9, the biogas that ferment tank generates in the process enter methane purifying system 10 by biogas hole 1.8；
3) during continuing fermentation, when observing that liquid level of fermentation tank is excessively high by peephole, material signal central control system
13 control control valves 12.2 are closed, and liquid level of fermentation tank display control sensor 1.10 controls control pump 8 to close；
4) during continuing fermentation, when upper temp meter interface temperature sensor 1.6a, middle portion temperature meter interface temperature
Any one temperature sensor checks the fermentation tank in the region on sensor 1.6b, temperature of lower meter interface temperature sensor 1.6c
When temperature value is less than 35 DEG C, alternatively, when fermentation tank bulk temperature is less than 35 DEG C, temperature signal is transmitted to temperature signal central control system
11, temperature signal central control system 11 will control signal to pass to circulation fluid signal central control system 16, circulation fluid signal central control system
The 16 corresponding fermentation liquid circulation pipe-line control valves 15 of control sustained heights (be top fermentation liquid circulation pipe-line control valve 15a, in
Portion fermentation liquid circulation pipe-line control valve 15b and lower part fermentation liquid circulation pipe-line control valve 15c) it opens alternatively, opening whole hairs
Zymotic fluid circulation line control valve 15, meanwhile, 16 open the circulation pump 7 of circulation fluid signal central control system；Fermentation liquid circulation liquid is through cycle
Pump 7 enter heat exchangers 4 tube side in, meanwhile, from hot water storage tank 6 (in hot water storage tank 6 hot water come self generator cylinder road water or
Other public work hot water) in hot water enter in 4 shell side of heat exchanger, fermentation liquid circulation liquid and hot water carry out cold and hot conversion, and heat is handed over
Water after changing enters return water by the 4 shell side other end of heat exchanger and goes in hot tank 5, and the fermentation liquid circulation liquid after heat exchange is again by exchanging heat
The tube side of device 4 is another to be brought out, and is returned by side wall fermentation liquid circulation reflux inlet 1.4 or the vertical reflux inlet 1.7 of fermentation liquid circulation
It flow in fermentation tank 1；
5) during continuing fermentation, when upper temp meter interface temperature sensor 1.6a, middle portion temperature meter interface temperature
The fermentation tank that any one checks the temperature sensor region on sensor 1.6b, temperature of lower meter interface temperature sensor 1.6c
When temperature value returns to 35 DEG C, alternatively, when fermentation tank bulk temperature returns to 35 DEG C, temperature signal is transmitted to temperature signal central control system
11, temperature signal central control system 11 will control signal to pass to circulation fluid signal central control system 16, circulation fluid signal central control system
The 16 corresponding fermentation liquid circulation pipe-line control valves 15 of control sustained heights (be top fermentation liquid circulation pipe-line control valve 15a, in
Portion fermentation liquid circulation pipe-line control valve 15b and lower part fermentation liquid circulation pipe-line control valve 15c) it closes alternatively, closing whole hairs
Zymotic fluid circulation line control valve 15, meanwhile, hot water effluent's valve of closing hot water storage tank 6, heat exchanger 4 is stopped,
6) during continuing fermentation, by different high in the temperature sensor monitors fermentation tank on thermometer boss 1.6
The temperature of degree, repeatedly step 4)~5) operation, so as to ensure fermentation tank whole constant temperature, ensure that fermentation system is stablized.
In the above-mentioned course of work, control valve 12.2 is easily damaged or runs not just for electric or pneumatic control valve
Often, once finding 12.2 damages, foreline valve 12.1 and postposition valve 12.3 are closed, and opens by-passing valve 12.4 and ensures that fermentation system is steady
It is fixed；
Embodiment 2
The present embodiment and 1 structure of embodiment are essentially identical, the difference lies in：
1 total volume of fermentation tank is 2400m3Sharp Pu tank, fermentation tank in the environment on the basis of 5 DEG C of winter mean temperature,
Full tank about needs heat compensation amount for 10~12kW after using heat preservation.
Equipped with stalk material in the two level desilting homogeneous pond 2 of the system, stalk material is through stalk material inlet 1.9
It ferments in fermentation tank 1.
In practical work process, Matter Transfer pipeline uses the good pipeline of insulation effect and insulation of equipment material, pipe
Road valve uses the solenoid valve with flow control, and the circulating pump of circulation line uses the centrifugal pump or other shapes of variable-frequency motor control
The pump of formula, in order to ensure process stabilizing, circulating pump is set using the using and the reserved mode, ensures the fluid circulation of circulation line.
Heat exchanger is shell-and-tube heat exchanger, and hot water walks shell side, and zymotic fluid walks tube side, convenient for the cleaning of heat exchanger, heat exchanger
Hot water source in biogas generator cylinder road water either other do not have public work hot water in the project of marsh gas power generation or other
Heating agent, heat exchanger heat exchange power will fully consider the fermentation tank heat exchange effect of heat loss and heat exchanger under most harsh environment in itself
Rate.
Other unspecified parts are the prior art.Although above-described embodiment is made that the utility model detailed
Description, but it is only the utility model part of the embodiment rather than whole embodiments, and people can also be according to this implementation
Example obtains other embodiment under the premise of without creativeness, these embodiments belong to scope of protection of the utility model.
Claims (8)
1. a kind of large size full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system, it is characterised in that：The system comprises fermentation tanks
(1), it is from top to bottom spaced apart on fermentation tank (1) outer wall and is equipped with multiple fermentation liquid circulations outlet (1.1), the fermentation tank
(1) biogas slurry outlet (1.2) is offered on outer wall, the biogas slurry outlet (1.2) exports (1.1) positioned at nethermost fermentation liquid circulation
Lower section, fermentation tank (1) the outer wall top offers overflow port (1.3), and fermentation tank (1) the outer wall top is additionally provided with side
Wall fermentation liquid circulation reflux inlet (1.4), the side wall fermentation liquid circulation reflux inlet (1.4) positioned at overflow port (1.3) hereinafter,
Fermentation tank (1) the outer wall lower part is additionally provided with waste and organic matter class material inlet (1.5), on fermentation tank (1) outer wall
Multiple thermometer bosses (1.6) are from top to bottom arranged at intervals with, thermometer is provided on the thermometer boss (1.6), it is described
The number and installation site of thermometer boss (1.6) are corresponded with fermentation liquid circulation outlet (1.1), the fermentation tank (1)
The vertical reflux inlet of fermentation liquid circulation (1.7), biogas hole (1.8), stalk material inlet (1.9) and fermentation are provided on tank deck
Tank level display control sensor (1.10), the waste and organic matter class material inlet (1.5) and stalk material inlet
(1.9) it is connect respectively with two level desilting homogeneous pond (2), the overflow port (1.3) connect with second order fermentation tank (3), the biogas slurry
Outlet (1.2) is connect by discharging pump (8) with second order fermentation tank (3), and each fermentation liquid circulation outlet (1.1) passes through circulating pump
(7) tube side one end with heat exchanger (4) is connect, and the tube side other end of the heat exchanger (4) is connected separately with side wall zymotic fluid and follows
Ring liquid reflux inlet (1.4) and the vertical reflux inlet of fermentation liquid circulation (1.7), the shell side both ends of the heat exchanger (4) connect respectively
It is connected to return water and removes hot tank (5) and hot water storage tank (6).
2. large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system according to claim 1, it is characterised in that：The two level
Fermentation tank (3) is parallel with biogas slurry temporary storage tank (9).
3. large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system according to claim 1, it is characterised in that：The biogas
Hole (1.8) is connected with methane purifying system (10).
4. large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system according to claim 1, it is characterised in that：The fermentation
Liquid loop exit (1.1) is 3~5.
5. large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system according to claim 1, it is characterised in that：The temperature
It is 3~5 to count interface (1.6) number, and the temperature is calculated as temperature sensor, and the temperature sensor is with being controlled in temperature signal
System (11) connection.
6. large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system according to claim 1, it is characterised in that：The two level
Between being provided between desilting homogeneous pond (2) and waste and organic matter class material inlet (1.5) and stalk material inlet (1.9)
Pipeline on be provided with fermentation raw material pipeline Electronic control valve module (12), the fermentation raw material pipeline Electronic control valve module
(12) including before by being set on the pipeline in two level desilting homogeneous pond (2) to waste and organic matter class material inlet (1.5) direction
Valve (12.1), control valve (12.2) and postposition valve (12.3) are put, the fermentation raw material pipeline Electronic control valve module (12) is also wrapped
Include the side on the pipeline that the control pipeline formed with foreline valve (12.1), control valve (12.2) and postposition valve (12.3) is arranged in parallel
Port valve (12.4), the control valve (12.2) connect with material signal central control system (13).
7. large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system according to claim 6, it is characterised in that：The waste
Waste and organic matter are provided between organic matter class material inlet (1.5) and fermentation raw material pipeline Electronic control valve module (12)
Class material switch valve (2.1), between the stalk material inlet (1.9) and fermentation raw material pipeline Electronic control valve module (12)
It is provided with stalk material switch valve (2.2).
8. large-scale full-mixing type anaerobic marsh-gas fermentation tank thermal compensation system according to claim 2, it is characterised in that：The fermentation
Fermentation cycle liquid pipeline outlet valve (14) and fermentation are both provided on pipeline between liquid loop exit (1.1) and circulating pump (7)
Liquid circulation line control valve (15)；The fermentation liquid circulation pipe-line control valve (15) connects with circulation fluid signal central control system (16)
It is logical.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020149789A1 (en) * | 2019-01-18 | 2020-07-23 | E2S2 Systems Pte. Ltd. | A biowaste treatment system and a method of biowaste treatment in association therewith |
| CN115215689A (en) * | 2022-06-28 | 2022-10-21 | 雅安人德科技有限公司 | Method and equipment for producing fertilizer by treating kitchen waste through aerobic-anaerobic coupled fermentation |
-
2017
- 2017-11-07 CN CN201721477131.4U patent/CN207483762U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020149789A1 (en) * | 2019-01-18 | 2020-07-23 | E2S2 Systems Pte. Ltd. | A biowaste treatment system and a method of biowaste treatment in association therewith |
| CN115215689A (en) * | 2022-06-28 | 2022-10-21 | 雅安人德科技有限公司 | Method and equipment for producing fertilizer by treating kitchen waste through aerobic-anaerobic coupled fermentation |
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