CN102553887A - Kitchen waste anhydration processing method - Google Patents
Kitchen waste anhydration processing method Download PDFInfo
- Publication number
- CN102553887A CN102553887A CN2011104580784A CN201110458078A CN102553887A CN 102553887 A CN102553887 A CN 102553887A CN 2011104580784 A CN2011104580784 A CN 2011104580784A CN 201110458078 A CN201110458078 A CN 201110458078A CN 102553887 A CN102553887 A CN 102553887A
- Authority
- CN
- China
- Prior art keywords
- percent
- tail gas
- sewage
- processing method
- washing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Processing Of Solid Wastes (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention relates to a kitchen waste anhydration processing method which comprises the following steps: indirectly heating kitchen waste with the moisture content of 75 percent (wet basis) to the moisture content of 10 percent to 15 percent (wet basis) by a paddle dryer; and sucking tail gas evaporated by the paddle dryer into a washing tower and emptying the tail gas after washing the tail gas, wherein the sewage solid content of the washed tail gas is 0.5 percent to 1 percent, 70 percent to 80 percent of sewage is returned to the washing tower to be recycled as a detergent, 20 percent to 30 percent of sewage is subjected to liquid-solid separation, bottom concentrated solution obtained after liquid-solid separation is returned to the paddle dryer to be dried, and supernatant is returned to the washing tower to be recycled as the detergent. The dust content of the tail gas purified by the washing tower meets the requirement on environment protection and the tail gas can be directly discharged. The kitchen waste anhydration processing method has a high anhydration efficiency, the emission of dust, wastewater and waste residues can also be reduced, and the requirement on the environment protection is met.
Description
Technical field
The present invention relates to a kind of kitchen garbage drying processing method.
Background technology
Moisture accounts for more than 70% of total amount in the changing food waste, has brought very big difficulty for landfill, burning disposal, need carry out further handling after the mummification again.The drying and other treatment of changing food waste promptly is that it is carried out drying, removes most of moisture, kills malignant bacteria, and it is constant to keep its useful component.
Drying method is divided into direct mummification and indirectly drying two big classes, and not only efficient is low for the method for the direct mummification of employing hot blast, and discharge amount of exhaust gas is big, easy generation of secondary pollution; Adopt the indirectly drying thermal efficiency high, discarded discharge capacity is less.The tail gas of two kinds of drying methods could discharge after all need handling.Conventional cleaning dust method had both needed great amount of water resources, can produce extra waste water and waste residue again, brought new environmental issue.
Summary of the invention
The present invention provides a kind of kitchen garbage drying processing method, and mummification efficient is high, can reduce dust, waste water and waste sludge discharge simultaneously, satisfies environmental requirement.
Said kitchen garbage drying processing method is: water content is that to carry out indirect to moisture content through blade dryer be 10%～15% (wet basis) to the changing food waste of 75% (wet basis); The tail gas that blade dryer is evaporated is pumped into scrubbing tower; Emptying after washing; Sewage solid content behind the washing tail gas is 0.5%～1%, and wherein 70%～80% sewage returns scrubbing tower and recycles as washing agent, and 20%～30% sewage carries out liquid-solid separation; Bottom concentrate after the liquid-solid separation returns blade dryer and carries out drying, and supernatant liquor returns scrubbing tower and recycles as washing agent.Tail gas dustiness after scrubbing tower purifies satisfies environmental requirement, can directly discharge.
Blade dryer is public equipment, has groomed oar rachis and hollow chuck, wherein all can feed heat medium (steam, hot water or conduction oil), through wall wet stock is carried out the indirect drying; Under the stirring of paddle shaft, wet part of evaporation rapidly of changing food waste, and progressively move to discharging opening, dried material is discharged from discharge end.
Preferably, the blade dryer drop temperature is 98～102 ℃; Changing food waste adopts the saturated vapor of 0.4MPaG to carry out indirect through blade dryer, and the steam condensate after the heat exchange divides two-way to discharge from the paddle shaft and the hollow chuck bottom of blade dryer discharge end respectively.
Preferably, said 20%～30% sewage carries out Separation of Solid and Liquid with hydrocyclone.
As improvement of the present invention, in scrubbing tower, add deodorant and can accomplish the tail gas deodorizing simultaneously.
The scrubbing tower water level preferably is controlled between high liquid level and the low liquid level.Water level control method: the washings of certain liquid level of packing in advance in the scrubbing tower 5 (paramount liquid level H reports to the police).In running, water level maintains between low liquid level L and the high liquid level H, according to the indicated value of the fluid level transmitter on the scrubbing tower 54, regulates the flow of hydrocyclone 3 bottoms, keeps the constant of scrubbing tower water level.When liquid level L warning takes place to hang down in fluid level transmitter 4, open the magnetic valve 7 beginning moisturizings of inlet pipeline, paramount liquid level H stops moisturizing when reporting to the police.Preferably, said high liquid level is 70% of a container volume, and said low liquid level is 20% of a container volume.
Advantage of the present invention:
1. totally-enclosed operation, the dedusting deodorizing is once accomplished.
2. the waste residue behind the washing tail gas returns drying machine and carries out mummification, no waste sludge discharge again.
3. the waste water behind the washing tail gas recycles non-wastewater discharge after hydrocyclone separates.
4. the mummification product temperature can be controlled automatically, can not go bad.
5. the thermal efficiency is high, can obtain moisture content and be 10%～15% mummification product.
Description of drawings
Fig. 1 is the flow chart of kitchen garbage drying processing method of the present invention, wherein
The 1-blade dryer; The 2-control valve; The 3-hydrocyclone; The 4-fluid level transmitter; The 5-scrubbing tower; The 6-air-introduced machine;
The 7-magnetic valve; The 8-sewage pump; The 9-thermometer; The 10-Pressure gauge; The 11-thermometer; The 12-control valve.
The specific embodiment
As shown in Figure 1, said kitchen garbage drying processing method is: water content is that the changing food waste of 75% (wet basis) is sent into blade dryer 1 through feed arrangement, and it is 10% (wet basis) that the saturated vapor of employing 0.4MPaG carries out indirect to moisture content.Under the stirring of paddle shaft, wet part of evaporation rapidly of changing food waste, and progressively move to discharging opening, dried material is discharged from the discharge end of blade dryer.Steam condensate after the heat exchange divides two-way to discharge from the paddle shaft and the hollow chuck bottom of blade dryer discharge end respectively.The tail gas that blade dryer is evaporated (steam and dust) is under the suction of air-introduced machine 6; Get into scrubbing tower 5 washings and discharge, the sewage solid content that discharge the washing back is 0.5～1%, carries through sewage pump 8; Wherein 80% sewage returns scrubbing tower and recycles as washing agent; 20% sewage is sent into hydrocyclone 3 and is carried out liquid-solid separation, and the concentrate that obtains after the liquid-solid separation returns blade dryer 1 and carries out drying, and supernatant liquor returns scrubbing tower 5 and recycles as washing agent.
In scrubbing tower 5, add deodorant and can accomplish the tail gas deodorizing simultaneously.
The control of mummification temperature: the parameter of mummification steam is indicated through thermometer 12 and Pressure gauge 11.Too high for preventing drop temperature, changing food waste is rotten, establishes thermometer 10 at discharging opening, through the height of temperature after the mummification, changes the aperture size of control valve 13, and the steam regulation flow is with the quality after the control mummification.
Water level control: 70% the water of packing in advance in the scrubbing tower 5 is as washing agent.In running; Water level maintains between low liquid level L (container volume 20%) and the high liquid level H (container volume 70%); According to the indicated value of the fluid level transmitter on the scrubbing tower 5, regulate the flow of hydrocyclone 3 bottoms, keep the constant of scrubbing tower water level.When liquid level L warning takes place to hang down in fluid level transmitter, open the magnetic valve 7 beginning moisturizings of inlet pipeline, paramount liquid level H stops moisturizing when reporting to the police.
Claims (3)
1. a kitchen garbage drying processing method is characterized in that, water content is that to carry out indirect to moisture content through blade dryer be 10%～15% (wet basis) to the changing food waste of 75% (wet basis); The tail gas that blade dryer is evaporated is pumped into scrubbing tower; Emptying after washing; Sewage solid content behind the washing tail gas is 0.5%～1%, and wherein 70%～80% sewage returns scrubbing tower and recycles as washing agent, and 20%～30% sewage carries out liquid-solid separation; Bottom concentrate after the liquid-solid separation returns blade dryer and carries out drying, and supernatant liquor returns scrubbing tower and recycles as washing agent.
2. kitchen garbage drying processing method as claimed in claim 1 is characterized in that said 20～30% sewage carries out liquid-solid separation through hydrocyclone.
3. according to claim 1 or claim 2 kitchen garbage drying processing method is characterized in that the temperature behind the kitchen garbage drying is controlled through the steam regulation flow, prevents that the mummification product is rotten.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104580784A CN102553887A (en) | 2011-12-31 | 2011-12-31 | Kitchen waste anhydration processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104580784A CN102553887A (en) | 2011-12-31 | 2011-12-31 | Kitchen waste anhydration processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102553887A true CN102553887A (en) | 2012-07-11 |
Family
ID=46401260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104580784A Pending CN102553887A (en) | 2011-12-31 | 2011-12-31 | Kitchen waste anhydration processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102553887A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394502A (en) * | 2013-08-16 | 2013-11-20 | 华新环境工程有限公司 | Drying system of independent wind chamber |
| CN103721998A (en) * | 2013-12-19 | 2014-04-16 | 山东百川同创能源有限公司 | Pretreatment method aiming at comprehensive energy utilization of Chinese medicine residue for gasification |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843985A (en) * | 2005-04-08 | 2006-10-11 | 兰州瑞德干燥技术有限公司 | Method for drying sludge by blade drier |
| CN1923386A (en) * | 2006-09-25 | 2007-03-07 | 上海餐余垃圾处理技术有限公司 | Process for utilization of kitchen refuse as resource |
| CN201530772U (en) * | 2009-05-21 | 2010-07-21 | 山东天力干燥设备有限公司 | System utilizing double-stage paddle dryers and drying sludge with superheated steam |
| CN101798164A (en) * | 2009-05-04 | 2010-08-11 | 上海蓝鸟环境科技发展有限公司 | Hollow paddle type sludge drying technique |
-
2011
- 2011-12-31 CN CN2011104580784A patent/CN102553887A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1843985A (en) * | 2005-04-08 | 2006-10-11 | 兰州瑞德干燥技术有限公司 | Method for drying sludge by blade drier |
| CN1923386A (en) * | 2006-09-25 | 2007-03-07 | 上海餐余垃圾处理技术有限公司 | Process for utilization of kitchen refuse as resource |
| CN101798164A (en) * | 2009-05-04 | 2010-08-11 | 上海蓝鸟环境科技发展有限公司 | Hollow paddle type sludge drying technique |
| CN201530772U (en) * | 2009-05-21 | 2010-07-21 | 山东天力干燥设备有限公司 | System utilizing double-stage paddle dryers and drying sludge with superheated steam |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103394502A (en) * | 2013-08-16 | 2013-11-20 | 华新环境工程有限公司 | Drying system of independent wind chamber |
| CN103394502B (en) * | 2013-08-16 | 2016-04-13 | 华新环境工程有限公司 | Independent air compartment anhydration system |
| CN103721998A (en) * | 2013-12-19 | 2014-04-16 | 山东百川同创能源有限公司 | Pretreatment method aiming at comprehensive energy utilization of Chinese medicine residue for gasification |
| CN103721998B (en) * | 2013-12-19 | 2016-02-03 | 山东百川同创能源有限公司 | A kind of preprocess method of the comprehensive energy utilization for Chinese medicine residue for gasification |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110207484B (en) | Material drying evaporation gas recycling system and method | |
| CN103708697A (en) | Mechanical vapor recompression (MVR) heat pump sludge drying system | |
| CN102660347B (en) | Process for removing sodium in high-sodium coal and system thereof | |
| CN203355311U (en) | Improved MVR evaporator | |
| CN107585996A (en) | The sludge drying system and method for a kind of high-efficient energy-saving environment friendly | |
| CN211169934U (en) | Miniature evaporation crystallization equipment | |
| CN201694934U (en) | Sludge blade drying system | |
| CN201864712U (en) | Efficient continuous phytoextraction device | |
| CN109945611B (en) | Disc type drying device for recycling moisture and heating in combination | |
| CN108408812B (en) | Desalination method and device for salt-containing wastewater | |
| CN205216222U (en) | Concentrated system of MVR centrifugation thin film evaporation | |
| CN113264564A (en) | Wastewater zero discharge system based on high-efficiency concentration and spray drying integrated treatment | |
| CN205115263U (en) | Utilize sludge drying equipment of low temperature flue gas | |
| CN102553887A (en) | Kitchen waste anhydration processing method | |
| CN211734157U (en) | Sludge drying system with closed indirect heat exchange function | |
| CN203212442U (en) | Mechanical steam recompression heat pump system for sludge drying | |
| CN201373694Y (en) | Combined secondary steam heat energy recovery device for heat pipe phase change heat exchanger of steam jet heat pump | |
| CN201930677U (en) | Sludge paddle type drying carrier-gas complete treatment device | |
| CN207797516U (en) | A kind of continuous vacuum heating and drying device | |
| CN201373695Y (en) | Combined secondary steam heat energy recovery device for heat pipe phase change heat exchanger of combined heat pump | |
| CN204564734U (en) | A kind of food waste treatment equipment | |
| CN204356320U (en) | A kind of biomass steam blasting assembly | |
| CN202427706U (en) | Kitchen garbage drying treatment device | |
| CN102068870A (en) | Complete sludge paddle anhydrated carrier gas treatment device and method | |
| CN202024311U (en) | Boiler dead steam recovery unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120711 |