CN203096062U - Device for co-producing alcohol and lactic acid from kitchen waste - Google Patents

Device for co-producing alcohol and lactic acid from kitchen waste Download PDF

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Publication number
CN203096062U
CN203096062U CN 201320031927 CN201320031927U CN203096062U CN 203096062 U CN203096062 U CN 203096062U CN 201320031927 CN201320031927 CN 201320031927 CN 201320031927 U CN201320031927 U CN 201320031927U CN 203096062 U CN203096062 U CN 203096062U
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China
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tank body
food waste
lactic acid
changing food
fermentation
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CN 201320031927
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Chinese (zh)
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王春铭
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South China Agricultural University
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South China Agricultural University
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Abstract

The utility model discloses a device for co-producing alcohol and lactic acid from kitchen waste. The device comprises a hydrothermal separation reactor, a spiral conveyor which is used for conveying a solid phase of the kitchen waste from the hydrothermal separation reactor to a fermentation tank, and the fermentation tank, wherein the spiral conveyor which is used for conveying the solid phase of the kitchen waste from the hydrothermal separation reactor to the fermentation tank is arranged between the hydrothermal separation reactor and the fermentation tank; and the fermentation tank comprises an alcohol fermentation bin and a lactic acid fermentation bin which are sequentially connected. By coupling hydrothermal treatment equipment, three-phase separation equipment and fermentation equipment for the kitchen waste, the consumption of energy is greatly reduced; and continuous feeding can be realized, and the treatment efficiency of the kitchen waste is improved. According to the device, after the kitchen waste is subjected to hydrothermal treatment, oil, water and slag are layered, three-phase separation is easily realized, the separated waste oil can be deeply treated into biodiesel, an organic matter is made into fuel alcohol and/or lactic acid through microbial fermentation, and fermentation residue is used for producing derived fuel or fertilizers.

Description

The device of a kind of changing food waste co-producing ethanol and lactic acid
Technical field
The utility model belongs to solid waste disposal Technology field, the device of particularly a kind of changing food waste co-producing ethanol and lactic acid.
Background technology
Changing food waste is a kind of important biomass energy.Changing food waste is carried out hydrothermal treatment consists meal kitchen oil quantity is increased, thereby increase the output of products such as biofuel, stearic acid and oleic acid.In addition, hydrothermal treatment consists plays the effect of high-temperature sterilization to the changing food waste solids, is fit to follow-up fermentative processing.The existing technology that relates to changing food waste hydrothermal treatment consists and microbial fermentation all is to finish in distinct device basically, as changing food waste is finished hydrothermal treatment consists in the hydro-thermal jar after, is transported to the separation of carrying out oil, water, slag in the triphase separator; Isolated slag is sent into and is carried out microbial fermentation in the fermentor tank.Above-mentioned technology relates to more equipment, and construction costs is higher.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art part, and a kind of changing food waste co-producing ethanol of continuously feeding and device of lactic acid realized is provided.
The purpose of this utility model is achieved through the following technical solutions: the device of a kind of changing food waste co-producing ethanol and lactic acid comprises the hydro-thermal separate reactor, is used for the solid phase of changing food waste is transported to from hydrothermal reactor the worm conveyor and the fermentor tank of fermentor tank; Be used for the solid phase of changing food waste is arranged between hydrothermal reactor and the fermentor tank from the worm conveyor that hydrothermal reactor is transported to fermentor tank;
The device of described changing food waste co-producing ethanol and lactic acid also comprises the computer that is used to control hydro-thermal separate reactor and fermentor tank operation, and the computer that is used to control the operation of hydro-thermal separate reactor is connected with hydro-thermal separate reactor and fermentor tank;
Described hydro-thermal separate reactor comprises tank body, visor, support, U-shaped chuck, the temperature electrode that is used to test the tank body internal reaction temperature, the screen cloth that is used for solid-liquid separation and rotating machine;
According to the tank body of the different sizes of treatment capacity design, be fit to samll cities and towns or metropolitan changing food waste and handle;
At the top of described tank body opening for feed and relief port are set; Middle part at described tank body sets out hydraulic fluid port; Set out the mouth of a river and discharge port in the bottom of described tank body;
Preferably, on described tank body, tensimeter is set; More preferably, on described tank body, manhole is set;
Described visor is arranged on the described tank body, is preferably to be arranged near described oil outlet place; Be used for observing the response situation whether grease at described tank body could discharge or be used for observing described tank body by oil outlet;
Described support is arranged at the bottom of tank body, is used to support tank body;
Described U-shaped chuck is arranged at the tank body outside, and heating agent inlet and refrigerant inlet are set respectively in the both sides, top of described U-shaped chuck, and heating agent outlet and refrigerant exit are set in the bottom of described U-shaped chuck; Heating agent outlet and refrigerant exit can be same outlet;
Described heating agent is preferably thermal oil;
Described refrigerant is preferably water;
Described U-shaped chuck is preferably disposed on the middle and lower part of tank body outside, and the height of U-shaped chuck is preferably 2/3 of tank body height;
The described temperature electrode that is used to test the tank body internal reaction temperature is arranged at the optional position on the described tank body, is preferably disposed on the inside top of tank body;
The described screen cloth that is used for solid-liquid separation is positioned at the interior bottom portion of described tank body, is positioned at the top of water outlet; Screen cloth preferably is set at a certain angle, can make moisture see through screen cloth and flow to reactor lower part, and the changing food waste solid is trapped in above the screen cloth;
The described screen cloth that is used for solid-liquid separation is preferably handstand hollow round table shape, and wherein, it is same big or be slightly less than discharge port to be used for the bottom circumference of screen cloth of solid-liquid separation and discharge port, next-door neighbour's discharge port and be positioned at the discharge port top; The top circumference that is used for the screen cloth of solid-liquid separation is designed to can be at the tank body internal rotation, and can maximum stops the solids of changing food waste;
Described rotating machine is connected with the described screen cloth that is used for solid-liquid separation, act as to drive the screen cloth rotation, quickens solid-liquid separation with centrifugation;
Described hydro-thermal separate reactor also comprises the water-oil interface transmitter;
Described water-oil interface transmitter is arranged at the inside of described tank body, is positioned at or a little less than the position of the same horizontal plane of described oil outlet; After changing food waste process hydro-thermal reaction, oil phase is positioned at the top of water, when the water liquid level arrives certain altitude, quits work by PLC (programmable logic controller) control water pump, and opens the top oil outlet, realizes the overflow of oil content;
Described fermentor tank comprises ethanol fermentation storehouse and the lactic fermentation storehouse that connects successively; Preferably, this fermentor tank is horizontal, comprises chuck II, spiral stir shaft and ethanol fermentation storehouse that is connected successively and lactic fermentation storehouse; Chuck II is positioned at the outside of fermentor tank, and refrigerant inlet, heating agent inlet and refrigerant exit, heating agent outlet are set on it, and heating agent outlet and refrigerant exit can be same outlet; Spiral stir shaft is positioned at fermentor tank inside, is communicated with ethanol fermentation storehouse and lactic fermentation storehouse; Changing food waste carries out ethanol fermentation by the ethanol fermentation storehouse, after ethanol fermentation finishes, and ethanol fermentation storehouse rotating centrifugal, Miao's liquid that will ferment gets rid of to urceolus, and through the liquid exit discharging, vinasse are delivered in the lactic fermentation storehouse by spiral stir shaft and are proceeded lactic fermentation; For energy-conservation better, the inlet of the refrigerant on the refrigerant exit on the U-shaped chuck on the hydro-thermal separate reactor and the chuck II can be connected, outlet of the heating agent on the U-shaped chuck on the hydro-thermal separate reactor and heating agent on the chuck II are entered the mouth to be connected;
Wherein, in each fermentation cabin, all be provided with pH electrode, dissolved oxygen electrode; Be provided with bacterial classification at the top of each fermentation cabin and add mouth; Bottom in each fermentation cabin is provided with liquid exit; In described ethanol fermentation storehouse material inlet is set, material outlet is set in described lactic fermentation storehouse;
The device of described changing food waste co-producing ethanol and lactic acid also comprises lift pump and container for storing liquid; Lift pump is arranged between the water outlet of container for storing liquid and described tank body; Water level in described hydro-thermal separate reactor arrives the position of described water-oil interface transmitter, and the effect of lift pump is to guarantee that the water in the described hydro-thermal separate reactor extracts out smoothly, delivers in the container for storing liquid; The position of the described water-oil interface transmitter of water level no show in described hydro-thermal separate reactor, the effect of lift pump is that the water in the container for storing liquid is evacuated in the described hydro-thermal separate reactor, so that liquid level arrives the oil outlet height, wash screen cloth simultaneously and prevent to stop up.
The utility model has following advantage and effect with respect to prior art: the innovation of the utility model by gordian technique and integrated, and coupling changing food waste hydrothermal treatment consists, three phase separation, fermentation equipment have greatly reduced the consumption of the energy; Simultaneously can continuously feeding, improve the changing food waste processing efficiency.By this utility model, after the changing food waste hydrothermal treatment consists, make oil, water, slag layering, be easy to three phase separation, but the waste oil deep processing after the separation is a biofuel, and organism is made alcohol fuel and/or lactic acid by microbial fermentation, and fermentation residue is used for producing derivatived fuel or fertilizer.Under China's low-carbon economy overall background, with the starting material of changing food waste, set up the distributed energy low-carbon (LC) that meets the national industrial policies support and utilize pattern as recycling, can effectively promote the development of China's recycling economy.
Description of drawings
Fig. 1 is the changing food waste co-producing ethanol that provides of embodiment 1 and the schematic representation of apparatus of lactic acid, wherein: the 1-tank body, the 2-relief port, the 3-temperature electrode, the 4-tensimeter, the 5-opening for feed, the 6-oil outlet, 7-water-oil interface transmitter, 8-heating agent inlet, the 9-rotating machine, the 10-water outlet, the 11-discharge port, 12-helical stir axle, the 13-support, the 14-liquid exit, the cold and hot matchmaker's outlet of 15-, the 16-liquid exit, the 17-discharge port, 18-heating agent inlet, 19-refrigerant inlet, 20-lactic fermentation storehouse, 21-chuck II, the 22-bacterial classification adds mouth, 23-ethanol fermentation storehouse, the 24-bacterial classification adds mouth, the 25-pH electrode, the 26-dissolved oxygen electrode, the cold and hot matchmaker's outlet of 27-, 28-U clevis cover, 29-refrigerant inlet, the 30-visor, the 31-screen cloth.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but embodiment of the present utility model is not limited thereto.
Embodiment 1
The device of a kind of changing food waste co-producing ethanol and lactic acid as shown in Figure 1, comprises the hydro-thermal separate reactor, is used for the solid phase of changing food waste is transported to from hydrothermal reactor the worm conveyor and the fermentor tank of fermentor tank.
The hydro-thermal separate reactor comprises tank body 1, water-oil interface transmitter 7, support 13, U-shaped chuck 28, the screen cloth 31 that is used for solid-liquid separation and rotating machine 9.Wherein, opening for feed 5, relief port 2, tensimeter 4 and temperature electrode 3 are set at the top of tank body 1, set out hydraulic fluid port 6 and visor 30 at the middle part of tank body; Set out the mouth of a river 10 and discharge port 11 in the bottom of tank body.Support 13 is arranged at the bottom of tank body 1, is used to support tank body.U-shaped chuck 28 is arranged at the middle and lower part (tank body is divided into 3 parts from top to bottom, and the middle and lower part refers to the outer rest part of 1/3 close top section of getting rid of tank body) of tank body 1 outside, and the height of U-shaped chuck 28 is 2/3 of tank body 1 height; Heating agent inlet 8 and refrigerant inlet 29 is set respectively in the both sides, top of U-shaped chuck 28, in the bottom of U-shaped chuck cold and hot matchmaker is set and exports 27, promptly from then on refrigerant, heating agent all mouthful go out.Water-oil interface transmitter 7 all is arranged at the inside of tank body, and water-oil interface transmitter 7 is a little less than oil outlet 6.The screen cloth 31 that is used for solid-liquid separation is handstand hollow round table shape, and wherein, the bottom circumference of screen cloth 31 that is used for solid-liquid separation is same big with discharge port 11, is close to discharge port and is positioned at the top of discharge port 11; The top circumference that is used for the screen cloth 31 of solid-liquid separation is slightly less than the circumference of tank body 1.Rotating machine 9 is connected with the screen cloth 31 that is used for solid-liquid separation, is used to drive screen cloth 31 and rotates, and quickens solid-liquid separation with centrifugation.Moisture sees through screen cloth 31 and flow to the hydrothermal reactor bottom, flows out by water outlet 10 again.
Worm conveyor is transported to fermentor tank with the solid phase of changing food waste from hydrothermal reactor, its helical stir axle be arranged on the sealing or semiclosed in pipeline in.Helical stir axle in the worm conveyor and the integrated helical stir axle of the helical stir axle in the fermentation cabin.This helical stir axle 12 is arranged between the discharge port 17 in lactic fermentation storehouse of the discharge port 11 of hydrothermal reactor and fermentor tank, is communicated with the ethanol fermentation storehouse 23 and the lactic fermentation storehouse 20 of fermentor tank.
Fermentor tank is horizontal, comprises chuck II21 and ethanol fermentation storehouse 23 that is connected successively and lactic fermentation storehouse 20; Chuck II21 is positioned at the outside of fermentor tank, heating agent inlet 18, refrigerant inlet 19 and cold and hot matchmaker is set on it exports 15; In ethanol fermentation storehouse 23 material inlet is set, discharge port 17 is set in lactic fermentation storehouse 20.In each fermentation cabin, all be provided with pH electrode 25, dissolved oxygen electrode 26; Bacterial classification is set at the top in ethanol fermentation storehouse 23 adds mouth 24, the bottom is provided with liquid exit 14; Bacterial classification is set at the top in lactic fermentation storehouse 20 adds mouth 22, the bottom is provided with liquid exit 16.The changing food waste of handling through hydrothermal reactor is by helical stir axle 12, enters ethanol fermentation storehouse 23 from the discharge port 11 of hydrothermal reactor, carries out ethanol fermentation; After ethanol fermentation finishes, ethanol fermentation storehouse 23 rotating centrifugals, Miao's liquid that will ferment gets rid of to urceolus, and through liquid exit 14 dischargings, vinasse are delivered in the lactic fermentation storehouse 20 by helical stir axle 12 and are proceeded lactic fermentation.According to the temperature needs, inlet of the refrigerant from chuck II21 and U-shaped chuck 28 or heating agent inlet feed refrigerant or heating agent respectively.For energy-conservation, the refrigerant of chuck II21 inlet 19 and heating agent inlet 18 also export 27 with the cold and hot matchmaker of U-shaped chuck 28 and are connected except that being connected refrigerant and heating agent, according to the temperature needs through PLC (programmable logic controller) by the cold and hot matchmaker's flow of solenoid control.
Embodiment 2
The device that uses embodiment 1 to be provided is handled changing food waste.
(1) hydrothermal treatment consists: the changing food waste after the sorting is delivered to the hydro-thermal separate reactor from opening for feed, and heating agent is entered in the U-shaped chuck 28 by heating agent inlet 8, and controlled temperature is 130 ℃, handles 40 minutes.Afterwards heating agent being exported 27 by cold and hot matchmaker derives, and imports refrigerant by refrigerant inlet 29, and the tank body temperature is descended.
(2) three phase separation: the hydro-thermal separate reactor after the hydro-thermal end is unloaded to normal pressure.When the water level in the hydro-thermal separate reactor surpasses water-oil interface transmitter 7, open water outlet 10, by lift pump water is evacuated to container for storing liquid, when water level drops to water-oil interface transmitter 7, by the PLC(programmable logic controller) control water pump quit work, and open top oil outlet 6, realize the overflow of oil content.Position when water level no show water-oil interface transmitter 7, by lift pump the waste water of the three phase separation of storing in water or the container for storing liquid (go up task store) is evacuated in the hydro-thermal separate reactor, so that liquid level arrives the height of oil outlet 6, guarantee that grease successfully overflows from oil outlet 6, wash screen cloth 31 simultaneously and prevent to stop up.Then, waste water flow to container for storing liquid by bottom water outlet 10, opens rotating machine 9, quickens solid-liquid separation.
(4) advanced treatment:
1. the solid that obtains of three phase separation falls into worm conveyor (helical stir axle 12) from bottom discharge mouth 11, and be sent in the ethanol fermentation storehouse 23 of horizontal fermentor tank, add mouthful 24 access ethanol fermentation bacterial classifications from bacterial classification, adjust the temperature to 30 ℃ by heating agent and refrigerant and carry out ethanol fermentation, fermentation Miao liquid is after 23 centrifugations of ethanol fermentation storehouse, flow to ethanol Miao liquid basin from liquid exit 14, make ethanol after the distillation.Then, vinasse are delivered in the lactic fermentation storehouse 20 by helical stir axle 12, at this moment, waste water from liquid exit 16 backflow part three phase separation, and add mouthfuls 22 from bacterial classification and insert lactic fermentation bacterial classifications and carry out lactic fermentation, fermentation Miao liquid is after 20 centrifugations of lactic fermentation storehouse, from liquid exit 16 outflows of bottom.Degradation product behind the Secondary Fermentation is discharged by discharge port 17 by helical stir axle 12.
The foregoing description is the utility model preferred implementation; but embodiment of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection domain of the present utility model.

Claims (9)

1. the device of changing food waste co-producing ethanol and lactic acid is characterized in that: comprise the hydro-thermal separate reactor, be used for the solid phase of changing food waste is transported to from hydrothermal reactor the worm conveyor and the fermentor tank of fermentor tank; Be used for the solid phase of changing food waste is arranged between hydrothermal reactor and the fermentor tank from the worm conveyor that hydrothermal reactor is transported to fermentor tank; Fermentor tank comprises ethanol fermentation storehouse and the lactic fermentation storehouse that connects successively.
2. the device of changing food waste co-producing ethanol according to claim 1 and lactic acid, it is characterized in that: also comprise the computer that is used to control described hydro-thermal separate reactor and the operation of described fermentor tank, the computer that is used to control the operation of hydro-thermal separate reactor is connected with described hydro-thermal separate reactor and described fermentor tank.
3. the device of changing food waste co-producing ethanol according to claim 1 and 2 and lactic acid is characterized in that: described hydro-thermal separate reactor comprises tank body, visor, support, U-shaped chuck, the temperature electrode that is used to test the tank body internal reaction temperature, the screen cloth that is used for solid-liquid separation and rotating machine; The temperature electrode that visor and being used to is tested the tank body internal reaction temperature is arranged at tank body, support is arranged at the bottom of tank body, the U-shaped chuck is arranged at the tank body outside, and the screen cloth that is used for solid-liquid separation is positioned at the interior bottom portion of tank body, and rotating machine is connected with the screen cloth that is used for solid-liquid separation.
4. the device of changing food waste co-producing ethanol according to claim 3 and lactic acid is characterized in that:
The top of described tank body is provided with opening for feed and relief port; The middle part of described tank body sets out hydraulic fluid port; The bottom of described tank body sets out the mouth of a river and discharge port;
Described visor be arranged on described oil outlet near;
The height of described U-shaped chuck is 2/3 of a tank body height;
The both sides, top of described U-shaped chuck are provided with heating agent inlet and refrigerant inlet respectively, and the bottom is provided with heating agent outlet and refrigerant exit respectively or cold and hot matchmaker's outlet is set;
The described screen cloth that is used for solid-liquid separation is a handstand hollow round table shape, and the discharge port of its bottom circumference and described tank body is same big or be slightly less than discharge port, next-door neighbour's discharge port and being positioned at above the discharge port of described tank body.
5. the device of changing food waste co-producing ethanol according to claim 4 and lactic acid is characterized in that: described hydro-thermal separate reactor also comprises the water-oil interface transmitter, and it is positioned at or a little less than the position of the same horizontal plane of oil outlet of described tank body.
6. the device of changing food waste co-producing ethanol according to claim 5 and lactic acid is characterized in that: tensimeter and/or manhole also are set on the described tank body.
7. the device of changing food waste co-producing ethanol according to claim 1 and 2 and lactic acid is characterized in that: described fermentor tank is horizontal, comprises chuck II, spiral stir shaft and ethanol fermentation storehouse that is connected successively and lactic fermentation storehouse; Chuck II is positioned at the outside of fermentor tank, and refrigerant inlet, heating agent inlet and refrigerant exit, heating agent outlet are set on it; Spiral stir shaft is positioned at fermentor tank inside, is communicated with ethanol fermentation storehouse and lactic fermentation storehouse.
8. the device of changing food waste co-producing ethanol according to claim 7 and lactic acid is characterized in that:
Described ethanol fermentation storehouse is provided with material inlet, and its top is provided with bacterial classification and adds mouth, and its bottom is provided with liquid exit, and its inside is provided with pH electrode and dissolved oxygen electrode;
Described lactic fermentation storehouse is provided with material outlet, and its top is provided with bacterial classification and adds mouth, and its bottom is provided with liquid exit, and its inside is provided with pH electrode and dissolved oxygen electrode.
9. the device of changing food waste co-producing ethanol according to claim 1 and 2 and lactic acid is characterized in that: also comprise lift pump and container for storing liquid; Lift pump is arranged between the water outlet of container for storing liquid and described tank body.
CN 201320031927 2013-01-21 2013-01-21 Device for co-producing alcohol and lactic acid from kitchen waste Expired - Lifetime CN203096062U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480632A (en) * 2013-09-24 2014-01-01 华南农业大学 Kitchen waste hydrothermal three-phase separation system
CN103484521A (en) * 2013-09-24 2014-01-01 华南农业大学 Method adopting hydro-thermal treatment to facilitate producing ethyl alcohol and lactic acid through kitchen waste
CN105618462A (en) * 2016-01-18 2016-06-01 董艺 Multipurpose kitchen garbage treatment system
CN108265082A (en) * 2018-04-08 2018-07-10 清华大学深圳研究生院 A kind of method of fermentation of organic wastes producing and ethanol

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103480632A (en) * 2013-09-24 2014-01-01 华南农业大学 Kitchen waste hydrothermal three-phase separation system
CN103484521A (en) * 2013-09-24 2014-01-01 华南农业大学 Method adopting hydro-thermal treatment to facilitate producing ethyl alcohol and lactic acid through kitchen waste
CN103484521B (en) * 2013-09-24 2014-12-10 华南农业大学 Method adopting hydro-thermal treatment to facilitate producing ethyl alcohol and lactic acid through kitchen waste
CN105618462A (en) * 2016-01-18 2016-06-01 董艺 Multipurpose kitchen garbage treatment system
CN108265082A (en) * 2018-04-08 2018-07-10 清华大学深圳研究生院 A kind of method of fermentation of organic wastes producing and ethanol

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Granted publication date: 20130731