CN101712923B - Organic waste dry-type anaerobic fermentation device and technology - Google Patents
Organic waste dry-type anaerobic fermentation device and technology Download PDFInfo
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Abstract
The invention provides an organic waste dry-type anaerobic fermentation device and a technology, relating to an organic waste treatment device, and simultaneously relating to the technology for treating organic waste by utilizing the device. The invention is a plug flow horizontal type fermentation device which is constituted by a feed inlet, a discharge hole and a stirring device which penetrates through the whole tank body longitudinally; the stirring device is connected with a plurality of stirring arms; the stirring device is electrically connected with the control device; the material inlet of the horizontal fermentation device is provided with a forced feeding device which is electrically connected with the control device; the horizontal fermentation device is provided with a heat exchange device; the temperature measuring device is arranged in the horizontal fermentation device and is electrically connected with the control device; the control device is electrically connected with a control valve and a circulating pump; a biogas fluid reflux spraying device and a temperature control and heat preservation device are arranged on the outer wall of the horizontal fermentation device; and the pH value and oxidation-reduction potential and the moisture monitoring device are arranged in the horizontal fermentation device through a probe. The technology and device in the invention is scientific, reasonable and practical.
Description
Technical field
The present invention relates to a kind of organic refuse treatment appts, also relate to simultaneously in the technology of using this apparatus processes organic waste.
Background technology
Organic waste says it is biodegradable waste definitely, can be divided into the primary by its source difference and produce four types in waste, secondary production waste, worker's sideline production organic waste materials and human lives's waste etc.Anaerobically fermenting is meant under anaerobic, relies on mikrobe actings in conjunction such as amphimicrobe and obligate bacterium, and the organism biodegrade is generated CH
4And CO
2Process.Anaerobically fermenting is handled organic waste technology all has application at home and abroad, comparatively ripe with abroad.There is statistic data to show that the output of all Europe anaerobic digestion biogas is counted 1.5 * 107m with methane
3/ d, CO in this process treatment process simultaneously
2Quantity discharged is few, and the product natural pond slag of fermentation and natural pond liquid become potential high-quality organic fertilizer.
The dry-type anaerobic fermentation technology is the focus of Recent study; Be characterized in fermentation materials solid holdup high (solid holdup can reach 20～40%); This technology is compared with conventional wet type anaerobic fermentation technology, has high, the advantages such as floor space is little, less investment, energy consumption is low, the tunning after-treatment system is simple of organic loading and factor of created gase.
Dry type anaerobic fermentation system normally moves under the hot conditions of 30～38 ℃ middle temperature or 50～60 ℃.Anaerobion, especially methanogen are very responsive to the fluctuation of temperature, require the fluctuating range of anaerobic fermentation system temperature to be no more than usually ± 2～3 ℃.In addition; Because the solid holdup of material is high in the dry type anaerobic fermentation system; Mobile poor, the heat-transfer effect between the material is relatively poor, how to guarantee that therefore material temperature is consistent and a constant essential condition that just becomes dry type anaerobic fermentation system operation control in the whole fermentation system.Still there is following problem in the organic waste anaerobic ferment process of exploitation at present: process control condition is complicated, and the required facility that ferments is too huge, is unfavorable for management; Produce a certain amount of natural pond slag, natural pond liquid, need supporting treatment facility; Energy consumption is high, and running cost is high, is unfavorable for realizing through engineering approaches, mass-producing, the marketization.
Summary of the invention
The present invention seeks to solve the deficiency of existing anaerobic ferment process, provide a kind of and can guarantee that whole zymotechnique continuously and device design science, reasonable, practical organic waste dry-type anaerobic fermentation device for overcoming the problem that above-mentioned prior art exists.Another object of the present invention provides the working method of this organic waste dry-type anaerobic fermentation device.
The objective of the invention is to realize through following technical scheme:
Organic waste dry-type anaerobic fermentation device of the present invention is the horizontal fermentation unit of plug flow, is made up of horizontal fermentation unit, whipping appts, pressure feeding device, heat-exchanger rig, temperature measuring equipment, temperature control and attemperator, gear, natural pond liquid backflow spray equipment, pH value, redox potential and moisture monitoring device; Horizontal fermentation unit is made up of a feeding mouth, a discharge port and the vertical whipping appts of wearing whole tank body; Whipping appts is an electric mixing device, is connected with a plurality of agitating arms on the whipping appts, and whipping appts is electrically connected with gear; Gear stirs material according to different fermentations stage demand and carries; The maximum factor of created gase that can effectively guarantee to ferment, material inlet is positioned at horizontal fermentation unit feeding mouth place, and there is the pressure feeding device at the material inlet place; Force feeding device to be electrically connected with gear; On horizontal fermentation unit, heat-exchanger rig is arranged, heat-exchanger rig connects and composes the cycle heat exchange system through pipeline through valve and recycle pump and temperature control and attemperator, and temperature measuring equipment is located in the horizontal fermentation unit; Be electrically connected with gear; Gear is electrically connected with valve and recycle pump, and temperature control and attemperator are positioned at horizontal fermentation unit outer wall, and pH value, redox potential and moisture monitoring device are located in the horizontal fermentation unit through probe.
Described temperature control and attemperator are solar energy heat pump systems, are made up of solar radiation plate, thermal insulation layer, heat pump set, temperature control recycle pump, heat-storing device, heat abstractor, temperature control gear.
The temperature of heating medium is 50 ℃-80 ℃ in the heat-storing device of said temperature control and attemperator.
Gear adopts PLC to realize the control to whipping appts, pressure feeding device, heat-exchanger rig, temperature measuring equipment, natural pond liquid backflow spray equipment, pH value redox potential and moisture monitoring device, temperature control and attemperator.
Said whipping appts is made up of the vertical terminal impeller blade of stir shaft, agitating arm and agitating arm of wearing whole tank body.Stir shaft is electronic stir shaft.
Said stir shaft is the quill shaft of sealing, and hollow space is filled up by gas or air.
Said agitating arm is at the radial outer periphery uniform distribution of stir shaft, and the relative angle α that the footpath between two adjacent agitating arms makes progress is 30 °～90 °.Agitating arm is irregular in the horizontal distribution of axle, agitating arm in the density of opening for feed and discharge port greater than middle portion.
The abaxial end of said agitating arm is equipped with impeller blade.
Said heat-exchanger rig comprises: multi-group heat exchanger, every group of interchanger is connected in series by some heat exchange water covers or some heat transfer tubes and forms.
One end of said every group of interchanger all is connected with the heat transfer tube of attemperator with temperature control through valve; The other end of every group of interchanger all is connected with the return line of attemperator with temperature control.
Said multi-group heat exchanger evenly is positioned at horizontal fermentation unit exterior side wall, and every group of interchanger is connected in series by some heat exchange covers or some heat transfer tubes and forms, and every group of interchanger has certain appropriate length, and spacing can not be excessive between the two adjacent groups interchanger.
Said temperature measuring equipment is a plurality of automatic temperature monitoring probes, and a plurality of automatic temperature monitoring probes are along the tank body uniform distribution, and probe gos deep into 0.3-1.0m in the horizontal fermentation unit, can effectively monitor the temperature in different fermentations stage.
Said natural pond liquid backflow spray equipment realizes that mainly natural pond liquid is as pH value and action of temperature in inoculum use and the regulating tank.
Said pH value, redox potential and moisture monitoring device; Be located in the horizontal fermentation unit through probe; Can realize the on-line monitoring of whole fermentation process pH value, redox potential and moisture, effectively grasp the changing conditions of pH value, redox potential and the moisture of whole fermentation process.
Attemperator is positioned at the fermentor tank outer wall, can utilize it to stop the heat in the fermentor tank to discharge through tank skin, and absorb the purpose that solar heat reaches insulation.
Said horizontal fermentation unit is a steelwork, and heat-exchanger rig is welded on the horizontal fermentation unit outer wall.Perhaps, said horizontal fermentation unit is a skeleton construction, and heat-exchanger rig is located at horizontal fermentation unit inner bottom part and sidewall, covers and the covering of solar radiation plate with the plain concrete layer.
The working method of organic waste dry-type anaerobic fermentation device of the present invention, its working method:
A. organic waste is dropped into special anaerobic ferment devices, under the state that remains 55 ℃～60 ℃ of optimum tempss, ferment;
B. through 15～30 days, generate the biogas and the residue of high density;
C. the biogas that generated of step b converts electric energy and heat energy or purification to and upgrades to Sweet natural gas, as automobile fuel or transport to gas distributing system;
D. the residue that generated of step b prepares fertilizer, and fertilizer is used to develop eco-agriculture.
The described fermentation of step a is through the heating of horizontal fermentation unit and the residue backflow of insulation and step b generation are controlled temperature.
Technology of the present invention and device science, reasonable, practical possess the condition that large-scale application is promoted.
Description of drawings
Fig. 1 is a dry-type anaerobic fermentation process flow sheet of the present invention.
Fig. 2 is an apparatus structure synoptic diagram according to the invention.
Fig. 3 is the A-A sectional view of device according to the invention.
Fig. 4 is the temperature control and the attemperator structural representation of device according to the invention.
Fig. 5 is the heat-exchanger rig structural representation of device according to the invention.
Among the figure: 1. material inlet; 2. pressure feeding device; 3. fermentor tank; 4. whipping appts; 5. heat-exchanger rig inlet pipe; 6. heat-exchanger rig; 7.pH value, redox potential, moisture monitoring device; 8. temperature measuring equipment 9. heat-exchanger rig return pipes; 10 viewing windows; 11. methane outlet; 12. material outlet; 13 natural pond liquid reflux and the spray pipeline; 14. natural pond liquid reflux pump; 15. gear; 16. heat pump set; 17. temperature control recycle pump; 18. heat-storing device; 19. thermal insulation layer; 20. solar radiation plate; 21. temperature control gear; 22. agitating arm; 23. the terminal impeller blade of agitating arm; 24. heat abstractor; α. the radial angle between the agitating arm.
Embodiment
Below in conjunction with accompanying drawing and specific examples the present invention is further specified, but be not limited to embodiment.
Embodiment 1
Instance of the present invention provides a kind of technology and device that organic waste dry-type anaerobic fermentation is handled that be used for.Invention relates to the working method and the device of the horizontal fermentation of plug flow; Its technological process is that organic waste is dropped into special anaerobic ferment devices; Under the state that remains 55～60 ℃ of optimum tempss; Carry out continous way and stir fermentation,, generate the high-effect biogas of high density and be rich in the efficient organic fertilizer of beneficial organism bacterium through 15～30 days.Biogas can convert electric power and heat energy to, and biogas can also be upgraded to the Sweet natural gas standard, the fuel that uses as automobile or transport to the Sweet natural gas network, and fertilizer comprises liquid fertilizer and solid organic fertilizer, can be used for developing eco-agriculture.
The horizontal fermentation unit of plug flow is an a kind of heat preserving type organic waste dry-type anaerobic fermentation system, comprising: fermentor tank, whipping appts, pressure feeding device, heat-exchanger rig, temperature measuring equipment, gear, natural pond liquid backflow spray equipment, pH value, redox potential and moisture monitoring device, temperature control and attemperator.
Instance of the present invention provides a kind of technology that organic waste dry-type anaerobic fermentation is handled that is used for, and is as shown in Figure 1.Organic waste is dropped into special large vol anaerobic ferment devices; Under the state that remains 55 ℃～60 ℃ of optimum tempss; Automatically control according to fermenting process by gear; Carry out the continous way fermentation,, generate the high-effect biogas of high density and be rich in the efficient organic fertilizer of beneficial organism bacterium through 15～30 days.Biogas can convert electric power and heat energy to, can guarantee that not only factory is self-sufficient, and considerable energy surplus can also be arranged.Biogas can also be upgraded to the Sweet natural gas standard, or is used for the aerating automobile as the fuel of automobile use, or inculcates to the Sweet natural gas network through natural gas line.And high-efficiency organic fertilizer can be used in the ecological agriculture, and the agricultural organic waste that produces in the agricultural can be used for fermentation again, forms a closed cycle, realizes the recycling of waste and the zero release of pollutent.
Instance of the present invention provides a kind of device that organic waste dry-type anaerobic fermentation is handled that is used for; As shown in Figure 2; This device comprises: material inlet 1, pressure feeding device 2, fermentor tank 3, whipping appts 4, heat-exchanger rig inlet pipe 5, heat-exchanger rig 6, pH value, redox potential, moisture monitoring device 7, temperature measuring equipment 8, heat-exchanger rig return pipe 9, viewing window 10, methane outlet 11, material outlet 12, the backflow of natural pond liquid and spray pipeline 13, natural pond liquid reflux pump 14, gear 15, agitating arm 22, the terminal impeller blade 23 of agitating arm; Radial angle between the agitating arm is α, wherein temperature control and attemperator by. heat pump set 16, temperature control recycle pump 17, heat-storing device 18, thermal insulation layer 19, solar radiation plate 20, temperature control gear 21, heat abstractor 24 are formed.Other are such as with fermentor tank 3 supporting realizations organic waste being carried out charging warehouse, the slag press filtration of liquid natural pond, natural pond and composting device and the equipment such as biogas discharge and collection utilization that dry-type anaerobic fermentation is handled; Because embodiment of the invention emphasis is to the specifying of fermentation unit, so other is realized the not explanations one by one of auxilliary equipment such as front end pre-treatment and rear end advanced treatment of fermentation.
Further specify with the concrete set-up mode that is connected of fermentor tank with attemperator with moisture monitoring device 7, temperature control in the face of whipping appts 4, pressure feeding device 2, heat-exchanger rig 6, temperature measuring equipment 8, gear, natural pond liquid backflow spray equipment, pH value, redox potential down.
Material gets into warehouse through after the pre-treatment, in warehouse, through material is carried out proportioning, after the heating, utilizes and forces feeding device 2, is transported to material inlet 1 and gets in the fermentor tank 3.Material is through preparatory acidifying in fermentor tank 3, and pH value is adjusted to suitable scope, for follow-up acidication and product biogas provide suitable condition.In fermentor tank 3; The whipping appts 4 that laterally runs through is installed, and stir shaft one end of whipping appts 4 is fixed on the chock of fermentor tank 3 end walls, and the other end links to each other with drive-motor; A lot of agitating arms 22 are installed on the stir shaft; Under the drive of drive-motor, according to different fermentations stage demand material is stirred and carry by gear 15, and can stir according to the slow rotation that material fermentation situation carried out different frequency, different stirring velocity and different mixing directions; Make material thorough mixing in jar even; And material is under the effect of follow-up charging promotion and stirring, and through acidication degraded back arrival fermentor tank discharge port 12, whipping process can be observed through viewing window 10 at any time in fermentor tank.The biogas that anaerobically fermenting produces carries out recycling treatment through methane outlet 11 and the collecting methane that matches and use device.The natural pond liquid of natural pond slag after the fermentation after press filtration separates is carried through natural pond liquid backflow spray pipeline 13 by natural pond liquid reflux pump 14 and is back in the anaerobic fermentation tank 3, plays moisture, temperature, the pH value of regulating material, and the effect of material inoculation.Temperature measuring equipment 8 is housed in jar, and pH value, redox potential and moisture monitoring device 7 all are electrically connected with gear 15, can monitor processing parameters such as material temperature, ph value, redox potential and water ratio in the fermentor tank 3, are transferred to gear 15.Wherein whipping appts 4, comprise the terminal impeller blade 23 of electronic stir shaft, agitating arm 22 and agitating arm that laterally runs through.Stir shaft is the quill shaft of sealing, and hollow space is filled up by gas or air.Agitating arm 22 is that agitating arm 22 abaxial ends are equipped with suitable impeller blade 23 with evenly the distributing by certain angle of rule in the radial outer periphery of axle.Under any circumstance, agitating arm 22 is the distribution with rule in the radial outer periphery of axle.Footpath between two the adjacent agitating arms 22 relative angle α that makes progress is 30 °～90 °.In order to make whole fermentation process be in a perfect condition, when each parameter in the fermenting process is monitored, use various means to regulate and control according to process requirements.Material temperature can be regulated and control in several ways; At first material preheats in warehouse, and through natural pond liquid is heated, the natural pond liquid after heating is back in the fermentor tank 3; Fermentor tank 3 self also can use heating, refrigeration and insulation measure in addition; Through heat-exchanger rig 6 and temperature control and attemperator, as shown in Figure 4, make fermentor tank 3 temperature-stables in processing range.
Heat-exchanger rig 6 is located on the fermentor tank 3, is connected to form the circulation heating heat-insulation system through pipeline and heat supply and attemperator; Temperature control and attemperator are solar energy heat pump systems, by heat pump set 16, and temperature control recycle pump 17, heat-storing device 18, heat abstractor 24, thermal insulation layer 19, solar radiation plate 20, temperature control gear 21 is formed; Heat-exchanger rig 6 is made up of multi-group heat exchanger; Every group of interchanger is connected in series by heat exchange cover or heat transfer tube 6 and forms interchanger, and the other end of every group of interchanger all is connected with the return line of heating plant, evenly is arranged on after promptly multi-group heat exchanger is connected in parallel on the fermentor tank 3; Specifically be arranged on fermentor tank inner bottom part and sidewall or the fermentor tank exterior side wall; And then guaranteed even heating to long fermentor tank, during actual installation, when being skeleton construction as if fermentor tank; Each is organized interchanger and is located at fermentor tank inner bottom part or sidewall, and adopts the plain concrete layer of 80～100mm to cover; If when fermentor tank was steelwork, each was organized on the sidewall of Welding of Heat-exchanger outside fermentor tank.Plain concrete or steelwork interchanger outer wall are around solar radiation plate 20; There is one deck heat absorbing coating on the radial lamella surface, and solar radiation plate 20 contains thermal insulation layer 19 and is connected with Multisource heat pump unit 16, heat-storing device 18, the heat abstractor 24 of auxiliary heat supplying through pipeline.Thermal medium through in the temperature control gear heat exchanging device carries out temperature control, realizes the purpose of heating, refrigeration and insulation.
Temperature measuring equipment 8 is located in the fermentor tank 3, is electrically connected with gear 15, is used to survey the temperature in the fermentor tank 3; Temperature measuring equipment 8 is to adopt a plurality of automatic temperature monitoring probes; A plurality of automatic temperature monitoring probes are along the tank body uniform distribution; Each automatic temperature monitoring probe gos deep into 0.3-1.0m place in the fermentor tank by different directions, can guarantee to survey the accuracy of temperature in the fermentor tank; When temperature is lower than design temperature in temperature measuring equipment 8 records fermentor tank 3, opens valve and temperature control recycle pump 17 and make the heating medium of said heat-storing device 18 supplies get into 3 heating of 6 pairs of fermentor tanks of said heat-exchanger rig through heat exchange inlet pipe 5; When temperature measuring equipment 8 when temperature is higher than design temperature in the fermentor tank 3, closed control valve and temperature control recycle pump 17 stop to carry the heating medium that said heating plant provides or utilizing heat abstractor 24 that its enforcement is freezed to said heat-exchanger rig 6 reaching the purpose of cooling.Temperature control gear 22 is electrically connected with valve and temperature control recycle pump 17; When solar radiation plate 19 heat-collecting temperatures are lower than leavening temperature and are not enough to heat exchanging device 6 and supply temperature; Heat pump set 16 starts, with air source, water source, soil source or other economic Cooling and Heat Source as thermal mediums in the heat pump source heat-storing device 18.
Specifically can adopt: the work leavening temperature of fermentor tank 3 is set, as: be made as 55 ℃, everywhere temperature in the automatic temperature monitoring probe detection fermentor tank 3 of temperature measuring equipment 8; When if certain temperature is lower than 55 ℃ of the work leavening temperatures that set; Then gear 15 is opened the valve on that corresponding group interchanger of temperature lower, if temperature control recycle pump 17 is in closing condition and then opens recycle pump simultaneously according to the signal that the automatic temperature monitoring probe sends; By temperature control gear 21 thermal medium is carried out heat supply to the interchanger of opening valve; Through the interchanger after the heat supply fermentor tank correspondence position is heated, improve leavening temperature, the automatic monitoring probe of simultaneous temperature continues monitoring; When temperature reaches 55 ℃ of the leavening temperatures of setting in the fermentor tank; Then the valve of the corresponding interchanger of signal at stop that sends once more according to automatic temperature monitoring probe of temperature control gear 21 reaches and closes corresponding interchanger, stops the heating to the fermentor tank corresponding position.When if temperature is higher than 55 ℃ of the leavening temperatures of setting in the fermentor tank; Then solar radiation plate 20 is concentrated the radiating capacity that has absorbed the sun; Through temperature control recycle pump 17 thermal medium that heat energy heats is at first got into heat-storing device 18; When heat medium temperature reaches certain value, to refrigerator thermal medium is provided by heat-storing device 18; Flow out the thermal medium of also having lowered the temperature from refrigerator and flow back to heat-storing device 18, reheat becomes high temperature thermal medium; The refrigerant medium that refrigerator produces leads to heat-exchanger rig 6, to reach refrigeration cool-down to fermentor tank 3 design temperature purposes.
Below with solar energy heat pump system and heat-exchanger rig as temperature control and attemperator, present embodiment heat exchange, process are described further:
When Fig. 4 can see fermentor tank 3 steelwork or skeleton construction, its outer wall was by heat-exchanger rig 6 parcels, heat-exchanger rig 6 peripheral parcel one deck solar radiation plates 18 simultaneously, and have thermal insulation layer 19 to prevent that heat from passing through tank skin and discharging.Have sunlit the time; Solar radiation plate 20 utilizes sun power, and the thermal medium of absorber coatings heat-storing device 18 carries out auxiliary heat supplying through having optionally; When not having solar radiation or solar radiation to be not enough to satisfy heat supply; Start heat pump set 16 and carry out auxiliary heat supplying, and when needs are lowered the temperature, utilize air source or other to realize the passive type refrigeration through the Jiyuan, the demand of cooling is provided.
This fermentation unit specifically when multi-group heat exchanger is set, can be divided into plurality of sections with fermentor tank 3 on the fermentor tank length direction; One group of interchanger all is set on every section, and assurance can be carried out uniform heating to long fermentor tank, according to the difference of fermentor tank; Adopt different mode mounting heat exchangers; As: when fermentor tank is skeleton construction, then respectively organizes interchanger and be located at fermentor tank inner bottom part or sidewall, and adopt the plain concrete layer of 80～100mm to cover; When fermentor tank is steelwork, wrap up with lagging material then with on the sidewall of each group Welding of Heat-exchanger outside fermentor tank, and with interchanger.Having formed multi-group heat exchanger parallel connection segmentation like this is arranged on the fermentor tank; Form temperature measuring equipment 8 with a plurality of automatic temperature monitoring probes along the tank body uniform distribution, each automatic temperature monitoring probe all is deep into 0.3～1.0m in the fermentor tank, can guarantee material temperature in every section fermentor tank of automatic monitoring; In the real work; Temperature control gear 21 receives the real time temperature data that the automatic temperature monitorings probe records and transmits, if when recording the fermentation system temperature and being lower than 2～3 ℃ of design temperatures, then opens the valve of temperature control recycle pump 17 and corresponding interchanger; Make thermal medium get into interchanger, the correspondent section of fermentor tank is heated; When the fermentation system temperature is higher than 2～3 ℃ of design temperatures; Then gear stops recycle pump and control corresponding valve; Stop to carry thermal medium or utilizing heat abstractor 24 to carry out refrigeration cool-down to interchanger, the thermal medium controlled temperature of thermal medium storage tank is between 50～80 ℃.
In sum; Control whipping appts, force feeding device according to the material requirement of fermentation different steps through gear in the embodiment of the invention; Through the temperature results that the automatic temperature monitoring probe records, loop temperature-control and heat-insulation system that control is made up of solar heat pump and heat-exchanger rig are realized fermentor tank integral body or different sites are carried out even heating; When heating, also can in time stop heating automatically according to the temperature variation that records; When having guaranteed that fermentation system carries out the dry-type anaerobic fermentation material of organic waste, temperature can not surpass the temperature of regulation, generally can reach 2～3 ℃ of not overshoot temperature taxis; And unite natural pond liquid backflow spray equipment through the real time on-line monitoring of pH value redox potential and moisture monitoring device and realize the adjusting to pH value, reduction potential and the water ratio of material in the fermentor tank, the effect of having protected the fermentation system material handling jointly.
Claims (12)
1. organic waste dry-type anaerobic fermentation device; For the horizontal fermentation unit of plug flow, it is characterized in that, constitute by horizontal fermentation unit, whipping appts, pressure feeding device, heat-exchanger rig, temperature measuring equipment, temperature control and attemperator, gear, natural pond liquid backflow spray equipment, pH value, redox potential and moisture monitoring device; Horizontal fermentation unit is made up of a feeding mouth, a discharge port and the vertical whipping appts of wearing whole tank body; Whipping appts is an electric mixing device, is connected with a plurality of agitating arms on the whipping appts, and whipping appts is electrically connected with gear; Material inlet is positioned at horizontal fermentation unit feeding mouth place; There is the pressure feeding device at the material inlet place, forces feeding device to be electrically connected with gear, on horizontal fermentation unit, heat-exchanger rig is arranged; Heat-exchanger rig connects and composes the cycle heat exchange system through pipeline through valve and recycle pump and temperature control and attemperator; Temperature measuring equipment is located in the horizontal fermentation unit, is electrically connected with gear, and gear is electrically connected with valve and recycle pump; Natural pond liquid backflow spray equipment, temperature control and attemperator are positioned at horizontal fermentation unit outer wall, and pH value, redox potential and moisture monitoring device are located in the horizontal fermentation unit through probe.
2. organic waste dry-type anaerobic fermentation device according to claim 1; It is characterized in that; Described temperature control and attemperator; Be solar energy heat pump system, constitute by solar radiation plate, thermal insulation layer, heat pump set, temperature control recycle pump, heat-storing device, heat abstractor, temperature control gear.
3. organic waste dry-type anaerobic fermentation device according to claim 1 is characterized in that, the temperature of heating medium is 50-80 ℃ in the heat-storing device of said temperature control and attemperator.
4. organic waste dry-type anaerobic fermentation device according to claim 1 is characterized in that, said whipping appts is made up of the vertical terminal impeller blade of stir shaft, agitating arm and agitating arm of wearing whole tank body, and stir shaft is electronic stir shaft.
5. organic waste dry-type anaerobic fermentation device according to claim 4 is characterized in that, said stir shaft is the quill shaft of sealing, and hollow space is filled up by gas or air.
6. according to claim 4 or 5 described organic waste dry-type anaerobic fermentation devices, it is characterized in that said agitating arm is at the radial outer periphery uniform distribution of stir shaft, the relative angle α that the footpath between two adjacent agitating arms makes progress is 30 °-90 °; Agitating arm is in the horizontal distribution of axle, and agitating arm is distributed in middle portion greatly in the density of opening for feed and discharge port, at the abaxial end of agitating arm impeller blade is housed.
7. organic waste dry-type anaerobic fermentation device according to claim 1 is characterized in that, said heat-exchanger rig comprises: multi-group heat exchanger, every group of interchanger is connected in series by some heat exchange water covers or some heat transfer tubes and forms.
8. organic waste dry-type anaerobic fermentation device according to claim 7; It is characterized in that; One end of said every group of interchanger all is connected with the heat transfer tube of attemperator with temperature control through valve; The other end of every group of interchanger all is connected with the return line of attemperator with temperature control, and multi-group heat exchanger evenly is positioned at horizontal fermentation unit exterior side wall, and every group of interchanger is connected in series by at least two heat exchange covers or two heat transfer tubes forms at least.
9. organic waste dry-type anaerobic fermentation device according to claim 1; It is characterized in that; Said temperature measuring equipment is popped one's head in at least two automatic temperature monitorings, two with last automatic temperature monitoring probe along the tank body uniform distribution, probe gos deep into 0.3-1.0m in the horizontal fermentation unit.
10. organic waste dry-type anaerobic fermentation device according to claim 1 is characterized in that, said horizontal fermentation unit is a steelwork, and heat-exchanger rig is welded on the fermentor tank outer wall; Perhaps, fermentor tank is a skeleton construction, and heat-exchanger rig is located at fermentor tank inner bottom part and sidewall, adopts the plain concrete layer to cover and the covering of solar radiation plate.
11. the technology of an organic waste dry-type anaerobic fermentation device is characterized in that, its working method:
A. organic waste is dropped into anaerobic ferment devices; Under the state that remains 55～60 ℃ of optimum tempss, ferment, anaerobic ferment devices is made up of horizontal fermentation unit, whipping appts, pressure feeding device, heat-exchanger rig, temperature measuring equipment, temperature control and attemperator, gear, natural pond liquid backflow spray equipment, pH value, redox potential and moisture monitoring device; Horizontal fermentation unit is made up of a feeding mouth, a discharge port and the vertical whipping appts of wearing whole tank body; Whipping appts is an electric mixing device, is connected with a plurality of agitating arms on the whipping appts, and whipping appts is electrically connected with gear; Material inlet is positioned at horizontal fermentation unit feeding mouth place; There is the pressure feeding device at the material inlet place, forces feeding device to be electrically connected with gear, on horizontal fermentation unit, heat-exchanger rig is arranged; Heat-exchanger rig connects and composes the cycle heat exchange system through pipeline through valve and recycle pump and temperature control and attemperator; Temperature measuring equipment is located in the horizontal fermentation unit, is electrically connected with gear, and gear is electrically connected with valve and recycle pump; Natural pond liquid backflow spray equipment, temperature control and attemperator are positioned at horizontal fermentation unit outer wall, and pH value, redox potential and moisture monitoring device are located in the horizontal fermentation unit through probe;
B. through 15～30 days, generate the biogas and the residue of high density;
C. the biogas that generated of step b converts electric energy and heat energy or purification to and upgrades to Sweet natural gas, as automobile fuel or transport to gas distributing system;
D. the residue that generated of step b prepares fertilizer, and fertilizer is used to develop eco-agriculture.
12. the technology of organic waste dry-type anaerobic fermentation device according to claim 11 is characterized in that, the described fermentation of step a is through the heating of horizontal fermentation unit and the residue backflow of insulation and step b generation are controlled temperature.
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Assignee: Kunchuan Electronic Equipment Co., Ltd., Yunnan Assignor: Kunchuan Design Inst., Yunnan Prov. Contract record no.: 2010530000036 Denomination of invention: Organic waste dry-type anaerobic fermentation device and technology License type: Exclusive License Open date: 20100526 Record date: 20100820 |
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