CN109821864B - Pretreatment system and method for kitchen waste - Google Patents
Pretreatment system and method for kitchen waste Download PDFInfo
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- CN109821864B CN109821864B CN201910270375.2A CN201910270375A CN109821864B CN 109821864 B CN109821864 B CN 109821864B CN 201910270375 A CN201910270375 A CN 201910270375A CN 109821864 B CN109821864 B CN 109821864B
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Abstract
The invention discloses a pretreatment system and method for kitchen waste, and relates to the technical field of environmental protection. The system comprises a receiving hopper, a spiral elevator, a wet-heat reactor, a rotary screen and a pulping machine which are connected in sequence; the pulping machine comprises a vertically arranged shell, a vertical rotating shaft is arranged in the middle of an inner cavity of the shell, an extrusion screw is arranged on the rotating shaft, and a screen drum is arranged between the extrusion screw and the inner wall of the shell; the feed inlet is arranged at the bottom of the shell and penetrates through the screen cylinder; the shell top sets up the residue export, and the bottom sets up the thick liquids export, and the thick liquids export sets up in a sieve net section of thick bamboo outside, extends to the shell outside. The method is based on the system. According to the invention, the kitchen waste after draining is subjected to damp-heat modification treatment, the organic matter hydrolysis efficiency is enhanced, the material viscosity is reduced, the performance requirement of subsequent separation equipment is reduced, and then the organic matter is sequentially screened, pulped and separated, so that the organic matter recovery rate is high, the harmless effect is obvious, and the organic slurry with uniform particle size and high purity is obtained for subsequent treatment.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a pretreatment system and method for kitchen waste.
Background
Because the classification system of the kitchen waste in China is not complete, and a large amount of domestic waste is mixed in the kitchen waste, the components of the kitchen waste become extremely complex, and the kitchen waste is mainly characterized by high water content, high viscosity and containing impurities such as metal, plastic, ceramic and the like. No matter what harmless and resource utilization process route is adopted by the kitchen waste, pretreatment is adopted to separate inorganic impurities such as metal, plastic, ceramic and the like, so that the stable operation of the subsequent kitchen waste treatment process can be ensured.
Currently, the food safety problem caused by urban kitchen waste such as 'swill-cooked dirty oil', 'waste pig', 'African swine fever' is receiving social attention, and the government of China also comes out a series of policies one after another, so that the collection, transportation, disposal and management of the kitchen waste are enhanced, the prevention and control work of the African swine fever is strengthened, and the resource utilization and harmless treatment level of the kitchen waste are improved. Therefore, it is important to select a proper pretreatment system, a proper pretreatment device and a proper pretreatment method.
Disclosure of Invention
The first invention of the invention is that: aiming at the existing problems, the system for pretreating the kitchen waste can improve the oil-water separation effect and anaerobic digestion efficiency of the kitchen waste, achieves the aims of improving the dehydration performance of the kitchen waste, degrading organic matters and killing pathogenic bacteria, and has the characteristics of mature technology, high automation degree, low cost and the like.
The second object of the present invention is to: according to the method, the kitchen waste after draining is subjected to damp-heat modification treatment, the organic matter hydrolysis efficiency is enhanced, the material viscosity is reduced, the performance requirement of subsequent separation equipment is remarkably reduced, then a drum screen and a pulping machine are sequentially arranged for separation and pulping, the organic matter recovery rate is high, the harmless effect is obvious, and organic slurry with uniform particle size and high purity is obtained for subsequent treatment.
The technical scheme adopted by the invention is as follows:
a pretreatment system for kitchen waste comprises a receiving hopper, a spiral elevator, a wet-heat reactor, a rotary screen and a pulping machine which are sequentially connected; the pulping machine comprises a vertically arranged shell, a vertical rotating shaft is arranged in the middle of an inner cavity of the shell, an extrusion screw is arranged on the rotating shaft, and a screen drum is arranged between the extrusion screw and the inner wall of the shell; a feed port of the pulping machine is arranged at the bottom of the shell and penetrates through the screen cylinder; the shell top sets up the residue export, and the bottom is provided with the thick liquids export, and the thick liquids export sets up in a sieve net section of thick bamboo outside, extends to the shell outside.
Due to the adoption of the technical scheme, after the garbage from the receiving hopper is subjected to primary solid-liquid separation in the spiral elevator, the garbage is subjected to damp-heat modification treatment in the damp-heat reactor, so that the organic matters are subjected to denaturation and hydrolysis in an accelerated manner, the viscosity is reduced, the separation effect and efficiency are improved, and the loss rate of the organic matters is reduced. And then the organic slurry with uniform particle size and high purity is obtained by twice sorting through a drum screen and a pulping machine, so that the treatment efficiency of the subsequent oil removal process and anaerobic digestion process is obviously improved.
In the pulping machine, rotation axis and extrusion screw cooperation carry out the spiral promotion to the material, promote the in-process, liquid material and solid material separation under the dual function of centrifugal force and gravity, and solid material is squeezed the dehydration under blockking of filtering sieve section of thick bamboo and is carried upwards, and the residue moisture content of finally sorting out is low, the follow-up processing of being convenient for, and solid-liquid separation is efficient.
Practice proves that the crude oil recovery rate of the organic slurry is as high as more than 3%, the methane production is increased by more than 30%, and considerable economic benefit is generated while carbon emission is reduced.
According to the pretreatment system for the kitchen waste, the diameter of the rotating shaft is gradually increased from bottom to top; the pitch of the extrusion screw is gradually reduced from bottom to top.
Due to the adoption of the technical scheme, the kitchen slurry is gradually concentrated under the action of the resistance of the screen cylinder and the rotating shaft through the reduction of the screw pitch and the increase of the shaft diameter, and the contained slurry flows out of the screen cylinder to form the organic slurry with uniform particle size and high purity for subsequent treatment.
According to the pretreatment system for the kitchen waste, the resistance assembly is arranged at the residue outlet and comprises a flap valve and a pressure block, the flap valve is connected to the shell, and the pressure block is connected to the flap valve; the aperture of the screen cylinder is 1-8 mm. .
By adopting the technical scheme, the flap valve deslagging resistance can be changed by adjusting the weight of the pressure block, so that the dryness and the humidity of the sorted residues are adjusted, and the moisture content is generally ensured to be less than 60%.
The invention relates to a pretreatment system of kitchen waste.A spiral elevator comprises an elevating part and a draining part which are connected with each other; the lifting part comprises a lifting cylinder, the lifting cylinder is obliquely arranged, and a shaftless lifting screw is arranged in the lifting cylinder; the feed inlet of a lifting cylinder is arranged at the lower end and is connected to the receiving hopper, and the discharge outlet of the lifting cylinder is arranged at the higher end and is connected to the hydrothermal reactor.
The kitchen waste pretreatment system comprises a draining net arranged on the side wall of a lifting cylinder and a water tank connected to the draining net, wherein the water tank is connected with a buffer pool; the buffer tank is connected to the slurry outlet.
Due to the adoption of the technical scheme, the leachate can be used as a cold source medium to cool the slurried material output from the slurrying machine.
According to the pretreatment system for the kitchen waste, the steam release device is arranged in the receiving hopper and comprises the distribution pipe and the guide pipe, one end of the guide pipe is connected to the distribution pipe, and the other end of the guide pipe is connected to the moist heat reactor; the exhaust holes are uniformly arranged on the exhaust pipe.
Due to the adoption of the technical scheme, under the low-temperature condition, the kitchen waste is fully preheated in the receiving hopper, so that the grease can be effectively prevented from being condensed, and the viscosity of the material is reduced. Meanwhile, the heat source for preheating is the waste heat of the damp-heat reaction, so that the energy is saved.
According to the pretreatment system for the kitchen waste, the hydrothermal reactor is horizontal, the spiral stirrer is arranged in the hydrothermal reactor and comprises a shaftless spiral blade, and two ends of the shaftless spiral blade are respectively connected to the inner walls of two ends of the hydrothermal reactor through bearings; the diameter of the shaftless helical blade is 1/4-1/3 of the diameter of the hydrothermal reactor, and the shaftless helical blade is arranged at the bottom of the hydrothermal reactor and is arranged at an interval with the bottom wall; the wet-heat reactors are arranged in parallel for 2-4, and run in sequence with each other.
Due to the adoption of the technical scheme, the material conveying in the wet-heat reactor is facilitated, 2-4 wet-heat spiral reactors are arranged in parallel and run in sequence and batch, the reliability and the stability of the operation of a pretreatment system are facilitated to be improved, waste heat steam is recycled as a kitchen waste preheating heat source, the energy consumption is saved, and meanwhile, the aims of obviously improving the kitchen dehydration performance and killing pathogenic bacteria are fulfilled under the high-temperature and high-pressure state.
A pretreatment method of kitchen waste comprises the following steps:
(1) collecting the kitchen waste in a receiving hopper, preheating the kitchen waste, and carrying out solid-liquid separation on the preheated kitchen waste while conveying the kitchen waste by using a spiral elevator to respectively obtain leachate and solid waste;
(2) conveying the solid waste to a wet-heat reactor for carrying out a wet-heat reaction, and recovering secondary steam discharged by flash evaporation as a preheating heat source of the kitchen waste;
(3) screening the kitchen waste after the damp-heat reaction by using a drum screen, and performing harmless treatment on materials on the screen; feeding the undersize material into a pulping process;
(4) extruding, slurrying and sorting the undersize materials in a slurrying machine to obtain organic slurry and inorganic residues; inorganic residues are subjected to innocent treatment, and organic slurry is subjected to subsequent treatment after being cooled by leachate.
The invention relates to a pretreatment method of kitchen waste, in the step (1), the water content of the kitchen waste is 80-90%, and the kitchen waste is preheated to 50-60 ℃.
The pretreatment method of the kitchen waste comprises the following steps of (2), wherein the temperature of the damp-heat reaction is 100-170 ℃, the pressure is 0.2-0.8MPa, and the damp-heat reaction time is 5-60 min; after the damp-heat reaction, the temperature is reduced to below 100 ℃ by flash evaporation, and then the materials are sieved.
In conclusion, due to the adoption of the technical scheme, the invention has the beneficial effects that:
(1) according to the invention, any pretreatment procedures such as sorting, crushing and the like are not required to be carried out on the kitchen waste before the damp-heat reaction, and the kitchen waste is directly subjected to damp-heat modification treatment under a high-temperature and high-pressure state, so that organic matters are subjected to denaturation and hydrolysis in an accelerated manner, the viscosity is reduced, the sorting effect and efficiency are improved, and the loss rate of the organic matters is reduced.
(2) 2-4 damp-heat spiral reactors are arranged in the damp-heat modification unit, are arranged in parallel and run in sequence and batch, so that the reliability and stability of the operation of a pretreatment system are improved, pathogenic bacteria are killed under the high-temperature and high-pressure state, and the kitchen dehydration performance is obviously improved; meanwhile, waste heat steam is recycled as a preheating heat source of the kitchen waste, so that energy consumption is saved.
(3) After the preposed damp-heat modification treatment, the kitchen slurry is sequentially screened and pulped, so that the organic slurry with uniform particle size and high purity can be obtained, the performance requirements on sorting and pulping equipment are greatly reduced, the treatment efficiency of a subsequent oil removal process and an anaerobic digestion process is obviously improved, the recovery rate of crude oil is up to more than 3%, the methane production is increased by more than 30%, and considerable economic benefit is generated while carbon emission is reduced.
(4) The system is matched with the method for use, is suitable for treating the kitchen waste with various scales and water contents, and has the advantages of mature technology, high automation degree, low investment, remarkable economic benefit and good application prospect.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
fig. 1 is a schematic structural diagram of a kitchen waste and treatment system provided by the invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
Example 1
As shown in fig. 1, the present embodiment provides a kitchen waste pretreatment system, which includes a receiving hopper 1, a screw elevator 2, a wet heat reactor 3, a drum screen 4 and a pulper 5 connected in sequence.
Wherein, the receiving hopper 1 is used for receiving and buffering the kitchen waste. A steam release device is arranged in the receiving hopper 1 to preheat the kitchen waste in the receiving hopper. The steam release device includes a distribution pipe 12 and a guide pipe 11, and one end of the guide pipe 11 is connected to the distribution pipe 12, and the other end is connected to the hydrothermal reactor 3 to use the residual heat of the hydrothermal reaction. The exhaust pipe 12 is uniformly provided with air outlets (not shown) to uniformly heat the material in the receiving hopper 1.
The screw elevator 2 comprises a hoisting section and a draining section connected to each other. The lifting part comprises a lifting cylinder 21, and the lifting cylinder 21 is obliquely arranged. The lifting cylinder 21 is provided with a feed inlet and a discharge outlet, the feed inlet is arranged at the lower end of the lifting cylinder 21 and is connected to the receiving hopper 1, and the discharge outlet is arranged at the higher end and is connected to the hydrothermal reactor 3. A shaftless lifting screw 22 is arranged in the lifting cylinder 21 to screw lift the material.
The draining part includes a draining net 23 provided at a sidewall of the hoist drum and a water tank 24 connected to the draining net 23. The aperture of the draining net 23 is 3-8mm, and extends from the lower end of the lifting cylinder 21 to the higher end, and the water tank 24 is connected with a buffer pool 25, so that the draining liquid drained by the draining net is guided into the buffer pool 25 for buffering and temporary storage.
In this embodiment, the hydrothermal reactor 3 is provided with 2 to 4 reactors, which are arranged in parallel and operated in sequence and batch, and is beneficial to improving the reliability and stability of the operation of the pretreatment system. In other embodiments, the number of hydrothermal reactors may be adjusted according to the actual conditions. The hydrothermal reactor 3 is of a horizontal structure, a spiral stirrer is arranged in the hydrothermal reactor, the spiral stirrer comprises a shaftless spiral blade 31, two ends of the shaftless spiral blade 31 are respectively connected with a bearing 32, and the shaftless spiral blade 31 is connected to the inner walls of two ends of the hydrothermal reactor 3 through the bearings 32. The diameter of the shaftless helical blade 31 is 1/4-1/3 of the diameter of the hydrothermal reactor 3, and the shaftless helical blade 31 is arranged at the bottom of the hydrothermal reactor 31 and is spaced from the bottom wall with a gap. The spiral stirrer is driven by a motor to rotate so as to stir and convey the kitchen waste, and the heat transfer process and the absorption reaction rate are enhanced.
The wet-heat reactor 3 is provided with a material inlet and outlet, a steam inlet and outlet, a safety valve pressure relief opening and a cleaning water opening, wherein the material inlet is connected to a discharge opening of the shaftless screw elevator 2, and a feeding gate valve 33 is arranged on the material inlet. The material outlet is connected to the drum screen 4, on which a discharge gate valve 34 is arranged. The material inlet and outlet are arranged in a large caliber, so that material blockage is avoided. The steam inlet is connected with a heat source generator, and the steam outlet is connected with a conduit 11 of the kitchen receiving hopper 1 and other hydrothermal reactors connected in parallel. The cleaning water port is connected with a reclaimed water or tap water pipe network. The safety valve pressure relief port and the cleaning water port are arranged at the top of the reactor. The hydrothermal reactor provided in this embodiment further includes a dosing port (not shown), and during the hydrothermal reaction, alkali solution or other chemicals may be added through the dosing port, so as to further enhance the organic hydrolysis efficiency.
The trommel 4 includes a drum 41 and a separation screen cylinder 42. The roller 41 is arranged on a frame (not shown), the separating screen cylinder 42 is sleeved inside the roller 41, and the aperture of the separating screen cylinder is 10-12 mm. The drum screen is provided with a material inlet, a screen underflow outlet and a screen overflow outlet. The material import one end is connected to the material export of damp heat reactor 3, and inside the other end extended to a separation sieve section of thick bamboo, oversize export and undersize export set up in the both ends of difference, communicate with a separation sieve section of thick bamboo 42 and cylinder 41 respectively, and material import is connected to damp heat spiral reactor material export, and undersize export is connected to the feed inlet of pulping machine 5. In the preferred embodiment, the drum 41 is inclined with the undersize outlet lower than the oversize outlet by an angle of no more than 15 °.
During operation, materials enter from the upper end of the separation screen cylinder 42, in the rotation process of the separation screen cylinder, fine materials are separated through the screen mesh interval formed by the annular flat steel, the fine materials enter the pulping machine 5 from the undersize outlet, coarse materials enter the garbage can 43 from the oversize outlet, and then the materials are disposed by adopting sanitary landfill or other harmless treatment facilities.
The pulping machine 5 comprises a vertically arranged shell 51, a vertical rotating shaft 52 is arranged in the middle of an inner cavity of the shell 51, the rotating shaft 52 is arranged in a variable diameter mode, and the diameter of the rotating shaft is gradually increased from bottom to top. The rotating shaft 52 is provided with an extrusion screw 53, and the extrusion screw 53 is arranged in a variable pitch manner and gradually decreases from bottom to top. A screen cylinder 54 is arranged between the extrusion screw 53 and the inner wall of the shell 51, the screen cylinder 54 is cylindrical, the aperture is 1-8mm, and the screen cylinder is sleeved between the extrusion screw 53 and the shell 51. The inlet opening of the pulper 5 is arranged at the bottom of the casing 51 and extends through the screen cylinder 54. The top of the shell 51 is provided with a residue outlet, the residue outlet is provided with a resistance component, the resistance component comprises a flap valve 55 and a pressure block 56, the flap valve 55 is connected to the shell 51, the flap valve 55 is used for closing and opening the residue outlet, the pressure block 56 is arranged on the flap valve 55, the weight of the pressure block 56 can be selected according to actual conditions, and the dry and wet degree of the sorted residue can be adjusted by adjusting the weight of the pressure block 56 to adjust the slag discharge resistance of the residue outlet. The residue outlet is connected to a waste bin 57 to receive inorganic residue. The bottom is provided with a slurry outlet, which is arranged outside the screen cylinder 54 and extends to the outside of the housing 51. The slurry outlet is connected to the buffer tank 25 so as to utilize the leachate therein as a cold source medium, and the leachate is mixed and cooled and then enters a subsequent treatment procedure together.
In order to ensure safety, the outer layers of the hydrothermal reactor 3, the rotary screen 4, the pulping machine 5 and the heat source connecting pipeline thereof are all provided with heat insulation layers. The kitchen waste pretreatment system can be equipped with an automatic control system so as to facilitate automatic operation of the system, and the automatic control system can be set according to the prior art, which is a conventional technology that should be understood by those skilled in the art, and is not described herein in detail. In addition, the kitchen waste pretreatment system also comprises a motor for driving, a necessary valve in a pipeline and the like, and the conventional technology which is understood by the technical personnel in the field is also needed.
Example 2
The embodiment provides a pretreatment method of kitchen waste, which is based on the pretreatment system of kitchen waste provided in embodiment 1 and effectively pretreats the kitchen waste. Which comprises the following steps:
the method comprises the following steps: receiving the kitchen waste with the water content of 80-90% in a kitchen receiving hopper, preheating the kitchen waste to 50-60 ℃, then entering a spiral elevator for spiral lifting, carrying out preliminary solid-liquid separation through a draining part in the lifting process, and entering a draining liquid into a buffer pool through a water tank.
Step two: controlling the water content of the solid kitchen waste to be 80-85%, sending the solid kitchen waste to a hydrothermal reactor for carrying out a damp-heat reaction, wherein the heat source of the damp-heat reaction is saturated steam, and carrying out the damp-heat reaction under the condition of spiral rotation and stirring, wherein the reaction temperature is 100-. And (3) mutually flashing and depressurizing the kitchen waste subjected to the damp-heat modification in a damp-heat reactor to reduce the temperature of the kitchen waste to be below 100 ℃, and simultaneously recovering secondary steam as a preheating heat source.
Step three: and (3) the kitchen waste after the damp-heat modification enters a drum screen to be subjected to waste sorting, coarse and large inorganic matters on the screen are sorted and screened out to a waste receiving box to be temporarily stored, and the waste is treated by adopting sanitary landfill or other harmless treatment facilities.
Step four: undersize meal kitchen organic slurry is sent to pulping machine, in pulping, under the effect of screen cloth section of thick bamboo and rotation axis resistance, meal kitchen slurry is concentrated gradually, the thick liquid that contains flows out from the screen cloth section of thick bamboo, form the organic slurry that the particle diameter is homogeneous, the purity is high, and there is the thick liquid export of lower extreme to discharge, this thick liquid and the leachate homogeneous mixing in step one, send to follow-up deoiling system and anaerobic digestion system and handle, inorganic residue is exported by the residue export at top, in the residue output process, adjustable pressure piece, change the size of sediment resistance, guarantee that the water content of residue is less than 60%, innocent treatment after the residue is collected.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (8)
1. A pretreatment system for kitchen waste is characterized by comprising a receiving hopper, a spiral elevator, a wet-heat reactor, a rotary screen and a pulping machine which are sequentially connected; the pulping machine comprises a vertically arranged shell, a vertical rotating shaft is arranged in the middle of an inner cavity of the shell, an extrusion screw is arranged on the rotating shaft, and a screen drum is arranged between the extrusion screw and the inner wall of the shell; a feed port of the pulping machine is arranged at the bottom of the shell and penetrates through the screen cylinder; the top of the shell is provided with a residue outlet, the bottom of the shell is provided with a slurry outlet, and the slurry outlet is arranged outside the screen cylinder and extends to the outside of the shell; a steam release device is arranged in the receiving hopper and comprises a distribution pipe and a guide pipe, one end of the guide pipe is connected to the distribution pipe, and the other end of the guide pipe is connected to the moist heat reactor; the exhaust pipe is uniformly provided with air outlets; the hydrothermal reactor is horizontal, a spiral stirrer is arranged in the hydrothermal reactor and comprises a shaftless spiral blade, and two ends of the shaftless spiral blade are connected to the inner walls of two ends of the hydrothermal reactor through bearings respectively; the diameter of the shaftless helical blade is 1/4-1/3 of the diameter of the hydrothermal reactor, and the shaftless helical blade is arranged at the bottom of the hydrothermal reactor and is arranged at an interval with the bottom wall; the wet-heat reactors are arranged in parallel for 2-4, and run in sequence with each other.
2. The pretreatment system for kitchen waste according to claim 1, characterized in that the diameter of the rotating shaft is gradually increased from bottom to top; the pitch of the extrusion screw is gradually reduced from bottom to top.
3. The kitchen waste pretreatment system according to claim 2, wherein a resistance assembly is provided at the residue outlet, said resistance assembly comprising a flapper door connected to said housing and a pressure block connected to said flapper door; the aperture of the screen cylinder is 1-8 mm.
4. The kitchen waste pretreatment system according to claim 1, wherein the screw elevator includes an elevating portion and a draining portion connected to each other; the lifting part comprises a lifting cylinder, the lifting cylinder is obliquely arranged, and a shaftless lifting screw is arranged in the lifting cylinder; the feed inlet of a lifting cylinder is arranged at the lower end and is connected to the receiving hopper, and the discharge outlet of the lifting cylinder is arranged at the higher end and is connected to the hydrothermal reactor.
5. The pretreatment system for kitchen waste according to claim 4, wherein said draining section comprises a draining net disposed on the sidewall of the lifting cylinder, and a water tank connected to the draining net, the water tank being connected to a buffer tank; the buffer tank is connected to the slurry outlet.
6. A kitchen waste pretreatment method based on the pretreatment system of any one of claims 1 to 5, characterized by comprising the following steps:
(1) collecting the kitchen waste in a receiving hopper, preheating the kitchen waste, and carrying out solid-liquid separation on the preheated kitchen waste while conveying the kitchen waste by using a spiral elevator to respectively obtain leachate and solid waste;
(2) conveying the solid waste to a wet-heat reactor for carrying out a wet-heat reaction, and recovering secondary steam discharged by flash evaporation as a preheating heat source of the kitchen waste;
(3) screening the kitchen waste after the damp-heat reaction by using a drum screen, and performing harmless treatment on materials on the screen; feeding the undersize material into a pulping process;
(4) extruding, slurrying and sorting the undersize materials in a slurrying machine to obtain organic slurry and inorganic residues; inorganic residues are subjected to innocent treatment, and the organic slurry and leachate are mixed and cooled for subsequent treatment.
7. The kitchen waste pretreatment method according to claim 6, characterized in that in the step (1), the water content of the kitchen waste is 80-90%, and the kitchen waste is preheated to 50-60 ℃.
8. The pretreatment method of kitchen waste according to claim 7, characterized in that in step (2), the temperature of the damp-heat reaction is 100-; after the damp-heat reaction, the temperature is reduced to below 100 ℃ by flash evaporation, and then the materials are sieved.
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|---|---|---|---|---|
| CN110340120A (en) * | 2019-08-12 | 2019-10-18 | 青海洁神环境能源产业有限公司 | Screening installation for kitchen garbage |
| CN112849786A (en) * | 2019-11-12 | 2021-05-28 | 慕峰 | Receiving bin with functions of draining and distributing |
| CN111375626B (en) * | 2020-04-12 | 2021-04-20 | 广东台泉环保科技有限公司 | Kitchen waste hydrolysis treatment method |
| CN113083865A (en) * | 2021-04-23 | 2021-07-09 | 河南绿功夫环保机械科技有限公司 | Kitchen waste desalting device |
| CN113351623A (en) * | 2021-06-02 | 2021-09-07 | 南京公诚节能新材料研究院有限公司 | Kitchen waste treatment process method |
| CN114226401A (en) * | 2021-12-21 | 2022-03-25 | 广东省建筑设计研究院有限公司 | Residue separator to organic solid waste |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101279160A (en) * | 2007-04-06 | 2008-10-08 | 月岛机械株式会社 | Vertical type screw press filtering equipment |
| CN201062237Y (en) * | 2007-04-09 | 2008-05-21 | 潘军 | Organic waste continuous processing unit |
| US20090039184A1 (en) * | 2007-08-10 | 2009-02-12 | Warren Vanderpool | Waste processing process |
| CN103128092B (en) * | 2011-11-24 | 2016-03-23 | 四川深蓝环保科技有限公司 | A kind of grease extraction of rubbish from cooking and device |
| CN103100550B (en) * | 2012-12-11 | 2016-04-13 | 北京洁绿科技发展有限公司 | A kind of processing method of rubbish from cooking |
| CN103272828B (en) * | 2013-05-28 | 2016-03-16 | 都市高科（北京）环境科技有限公司 | A kind of preprocess method of changing food waste |
| KR20150033003A (en) * | 2013-09-23 | 2015-04-01 | 이재춘 | food waste treatment equipment |
| CN203955692U (en) * | 2014-06-04 | 2014-11-26 | 江苏洁净环境科技有限公司 | For the pyrohydrolysis device of food garbage processing |
| CN105983565B (en) * | 2015-02-16 | 2018-11-27 | 江苏维尔利环保科技股份有限公司 | Hydrolysis device is heated for kitchen garbage |
| CN104893961B (en) * | 2015-06-04 | 2018-01-12 | 中国环境科学研究院 | The kitchen castoff energy and fertilizer integrated treatment unit and method |
| CN107952779A (en) * | 2016-10-18 | 2018-04-24 | 北京中科洁能环境工程技术有限公司 | A kind of kitchen garbage, animals died of illness combined treatment process system |
| CN106607449B (en) * | 2016-12-09 | 2019-02-12 | 长沙中联重科环境产业有限公司 | A kind of kitchen garbage pretreatment system and method |
| CN106903137B (en) * | 2017-04-06 | 2023-01-13 | 环创(厦门）科技股份有限公司 | Harmless treatment process and equipment for kitchen, fruit, vegetable and vegetable market garbage |
| CN108296261A (en) * | 2018-01-29 | 2018-07-20 | 世本（天津）环境技术有限公司 | A kind of kitchen garbage pretreatment system and technique |
| CN108500040A (en) * | 2018-05-03 | 2018-09-07 | 浙江延杭智能科技有限公司 | A kind of organic solid waste recycling decrement treatment equipment |
| CN108889768A (en) * | 2018-07-06 | 2018-11-27 | 浙江百思达科技有限公司 | Novel kitchen wastes pre-processing system and processing method |
-
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