CN101983942B - Drying and quality improvement apparatus for slime and sludge and technology thereof - Google Patents
Drying and quality improvement apparatus for slime and sludge and technology thereof Download PDFInfo
- Publication number
- CN101983942B CN101983942B CN2010105139690A CN201010513969A CN101983942B CN 101983942 B CN101983942 B CN 101983942B CN 2010105139690 A CN2010105139690 A CN 2010105139690A CN 201010513969 A CN201010513969 A CN 201010513969A CN 101983942 B CN101983942 B CN 101983942B
- Authority
- CN
- China
- Prior art keywords
- drying
- outlet
- drying tube
- separator
- broken
- 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.)
- Active
Links
Images
Abstract
The invention provides a drying and quality improvement apparatus for slime and sludge and technology thereof. The device mainly comprises a smoke producer, a feeder, a drying tube, a material breaking-apart device, a cyclone separator, a fine-grain conveying device, a finished-product handling device, a dust remover and a draft fan. The drying medium generated by the smoke producer and high-moisture materials to be dried administered by the feeder enter into the material breaking-apart device and the drying tube respectively. The high-moisture materials are subject to deep drying and air classification in the drying tube after being broke apart and preliminarily dried in the material breaking-apart device, wherein the particles of the size within the designed upper limit are carried into the separator by airflow and the particles of the size higher than the designed upper limit drop into the material breaking-apart device to be broke apart for a second time. Finished products collected by the separator are sent to coal yards or other places by the conveying device. Exhaust steam discharged by the separator is discharged into the atmosphere by the draft fan after being treated with the dust remover. The above apparatus has the advantages of better drying effect, reliable operation, simple system and compact structure.
Description
Technical field
The present invention relates to the drying and upgrading technical field, be specifically related to a kind of coal slime, drying sludge device for improving quality and technology.
Background technology
Programing in coal preparation will be accompanied by a large amount of primary slimes and secondary slime, and higher because of moisture, product is at a discount, can only stack in vacant lot, not only be prone to cause the wasting of resources, and be prone to cause environmental pollution.Even after reclaiming through filter press, coal slime filter cake fine size, moisture is high, viscosity is big, quality is low, be difficult to realize efficient commercial Application, and be main outlet to sell civilianly.
At present, power industry only has minority recirculating fluidized bed (CFB) boiler can directly adopt the mode of mixing burning to carry out the utilization of press filtration coal slime, mixes and burns the share basic controlling at total below 30% of fuel quantity.This utilizes mode not only to need powerful coal slime pumping system, and coal slime that need press filtration is good adds moisture again and reach the requirement of coal slime pumping system to guarantee its moisture, is example with domestic certain 1025t/h CFB boiler; The coal slime moisture that coal preparation plant supplies with is between 22%～26%; In order to satisfy coal slime pumping system transport requirement, must coal slime be added about moisture to 30%, thereby cause heat loss due to exhaust gas to increase; Reduce boiler thermal output, reduced the value of coal slime.
At present, in the actual production, a large amount of washing coal slimes can only adopt the modes such as marketable coal of mixing after the washing to handle, owing to contain large quantity of moisture in the coal slime, calorific value is low, has reduced the quality and the economic worth of finished market product coal.
Along with the development of China's municipal sewage treatment, the output of mud is rapid ascendant trend in recent years, has produced the high-moisture mud of enormous amount, owing to contain poisonous and harmful substances such as various pathogen, heavy metal, must carry out treatment and disposal.And increasingly serious land resource has also proposed very high requirement to the time and the space of Treatment of Sludge.
The advantage of sludge incineration is to reduce largely the volume of mud, decomposes the poisonous organic matter in the mud, can recycle the heat energy that sludge incineration produces, and meets China's sustainable development path, but need carry out dried before the burning of mud.
Therefore, high moisture materials such as coal slime, mud are convenient to realize that it effectively utilizes, improves commercial value, reduces floor space, reduces environmental pollution, for enterprise increases economic benefit after drying and upgrading processing.
At present, using comparatively extensively, the coal slime drying process is a coal slime roller drying technology.This process system mainly by thermal source, break up device, belt feeder, charger, revolving cylinder, belt discharging machine, air-introduced machine, discharger and power distribution cabinet and constitute; Its basic principle is the rotation through cylinder, make coal slime in slow moving process by the elevated temperature heat flue gas drying.
Coal slime roller drying process system is comparatively simple, and technology is comparatively ripe, but also has open defect such as comprise that low, the single cover system disposal ability of heat transfer coefficient is limited, finished product granularity poor quality, floor space are big.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the purpose of this invention is to provide a kind of coal slime, drying sludge device for improving quality and technology, have that drying effect is better, reliable, system is simple, the characteristics of compact conformation.
To achieve these goals, technical scheme of the present invention is achieved in that
A kind of coal slime, drying sludge device for improving quality; Comprise drying tube 3; The lower end of drying tube 3 or side lower part are connected with the outlet that material is broken up device 4, and the outlet of drying tube 3 is connected with the import of separator 9, it is characterized in that; The middle part or the upper position place of the drying tube 3 that the outlet that the outlet of drying tube 3 is following, material is broken up device 4 is above dispose high moisture material import to be dried; The gas approach that material is broken up device 4 is arranged in material and breaks up middle part or the bottom of device 4 and be connected with the exhanst gas outlet of flue gas producer 5, and the tail gas outlet of separator 9 is connected with the import of deduster 12, and the product outlet of separator 9 is connected with finished conveying device 11; The fine grained outlet of deduster 12 is connected with fine grained transport 10, and the tail gas outlet of deduster 12 is connected with atmosphere through air-introduced machine 13.
A kind of coal slime, drying sludge process for upgrading; The device of this drying and upgrading process using comprises drying tube 3; The lower end of drying tube 3 or side lower part are connected with the outlet that material is broken up device 4; The outlet of drying tube 3 is connected with the import of separator 9; Below the outlet of drying tube 3, the material middle part or the upper position place of breaing up the above drying tube 3 of the outlet of device 4 dispose high moisture material import to be dried, the gas approach that material is broken up device 4 is arranged in material and breaks up middle part or the bottom of device 4 and be connected with the exhanst gas outlet of flue gas producer 5, the tail gas outlet of separator 9 is connected with the import of deduster 12; The product outlet of separator 9 is connected with finished conveying device 11; The outlet of the fine grained of deduster 12 is connected with fine grained transport 10, and the tail gas outlet of deduster 12 is connected with atmosphere through air-introduced machine 13 and it is characterized in that, 200～850 ℃ of high-temperature flue gas of employing flue gas producer 5 generations or air are as drying medium; Sidepiece or bottom that drying medium is broken up device 4 by material feed; Coal slime, mud are fed by the middle part of drying tube 3 or the high moisture material import to be dried on top, and when coal slime, mud were broken, break up in material is broken up device 4, the medium that is dried was predrying; Drying medium carry secretly break up with predrying after get into drying tube 3 than fine grained and carry out further drying; Wherein particle diameter is no more than particle that the design upper limit requires and is carried by air-flow and get in the separator 9, and particle diameter falls into material greater than the particle of the design upper limit and breaks up device 4 and broken up once more; Finished product by separator 9 is collected is sent into coal yard or other place through finished conveying device 11; The tail gas of being discharged by separator 9 enters atmosphere through air-introduced machine 13 after deduster 12 is handled, the fine grained that deduster 12 produces is sent into coal yard or other place through fine grained transport 10.
Be positioned under the high moisture material import to be dried in the said drying tube 3, material breaks up position on the device 4 and disposes that material is broken up device 14 in advance or grid gets into the raw meal particle size that material is broken up device 4 with control.
Said flue gas producer 5 can be a coal furnace, also can be gas furnace, and coal furnace can be chain furnace, fluid bed furnace or coal-powder boiler.Said hot flue gas producer 5 can dispose separately, also can utilize existing boiler, and like station boiler, as hot flue gas producer, the hot flue gas through in position extracting suitable temperature is as drying medium.
Said material is broken up device 4 and can be adopted wind formula impact crusher, cross wind formula hammering disintegrating machine, blower mill or similar simplification device.
Said drying tube 3 has the pneumatic separation effect simultaneously, can control the grain graininess and the degree of drying that are carried the dried finished of leaving drying tube by drying medium.Drying medium speed in the said drying tube 3 is at 5～25m/s.Said drying tube 3 cross sections are circular, square or irregularly shaped, and differing heights place cross sectional shape can change, with the troubled water that changes descending wet stock and up dry gas stream and the sorting situation of large granular materials.
High moisture material import to be dried is arranged in middle part or the top in the drying tube 3; Therefore; Feeding high moisture material falls into material and breaks up in device 4 processes because of the gravity effect is descending; Be adverse current with hot flow of flue gas direction and flow to, the wet stock that makes the entering material break up device 4 carries out preliminarily dried and sorting, breaks up the live load and the sticking stifled possibility of generation of device to alleviate material.Drying tube 3 outlets can be provided with inertial separator, to strengthen the sorting control to discharging-material size.
The present invention has the following advantages:
1, adopts the convective drying mode; Flue gas and high moisture material heat and mass to be dried are strong; Both can accelerate moisture diffusion speed in the high moisture material to be dried, and can significantly improve the disposal ability of single complete equipment and system again, single complete equipment can realize that disposal ability is basically more than 150t/h;
2, adopt material to break up the mode of device and drying tube combined and arranged, efficiently solve the antiseized stifled problem in the high moisture material dry run;
3, adopting the spatial altitude direction is main arrangement, and whole process system floor space is little;
4, through the particular design of pneumatic separation and inertial separation and drying tube, can realize effective control, guarantee the quality of drying and upgrading product the finished product granularity;
5, through selecting and controlling the drying medium initial temperature and high-effective dust-removing equipment is set, can guarantee that the weary gas that finally enters atmosphere satisfies country and local environmental emission standard, free from environmental pollution.
6, SR is little, and power consumption is low.
Description of drawings
Fig. 1 is the structural representation of embodiments of the invention 1.
Fig. 2 is the structural representation of embodiments of the invention 2.
Fig. 3 is the structural representation of embodiments of the invention 3.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done more detailed explanation.
Referring to Fig. 1, the drying tube of this embodiment 13 adopts the uiform section structures, and the middle part feed is realized at the middle part of the drying tube 3 that the outlet that high moisture material import to be dried is configured in below the outlet of drying tube 3, material is broken up device 4 is above; High moisture material import to be dried is connected with the discharging opening of batcher 2; The charging aperture of batcher 2 is connected with feed bin 1; Batcher 2 is the coal slime peeler; The gas approach that material is broken up device 4 is arranged in material and breaks up the bottom of device 4 and be connected with the exhanst gas outlet of flue gas producer 5, adopts material to break up the mode that device 4 bottoms feed flue gas, and flue gas producer 5 is a chain furnace.In addition, among Fig. 1,6 is pressure fan; 7 is feeder; 8 is coal bunker; 9 is cyclone separator; Deduster 12 is a sack cleaner.
Referring to Fig. 2, the drying tube of this embodiment 23 adopts variable section structures, and the top feed is realized on the top of the drying tube 3 that the outlet that high moisture material import to be dried is configured in below the outlet of drying tube 3, material is broken up device 4 is above; High moisture material import to be dried is connected with the discharging opening of batcher 2; The charging aperture of batcher 2 is connected with feed bin 1; Batcher 2 is the coal slime disintegrating machine; The gas approach that material is broken up device 4 is arranged in material and breaks up the top of device 4 and be connected with the exhanst gas outlet of flue gas producer 5, adopts material to break up the mode that device 4 tops feed flue gas, and flue gas producer 5 is a chain furnace.In addition, among Fig. 2,6 is pressure fan; 7 is feeder; 8 is coal bunker; Separator 9 is a cyclone separator; Deduster 12 is a sack cleaner; 14 break up device in advance for the material that material breaks up on the device 4 that is positioned at that is configured in the drying tube 3.
Referring to Fig. 3, the drying tube of this embodiment 33 adopts the uiform section structures, and the middle part feed is realized at the middle part of the drying tube 3 that the outlet that high moisture material import to be dried is configured in below the outlet of drying tube 3, material is broken up device 4 is above; High moisture material import to be dried is connected with the discharging opening of batcher 2; The charging aperture of batcher 2 is connected with feed bin 1; Batcher 2 is the coal slime peeler; The gas approach that material is broken up device 4 is arranged in material and breaks up the bottom of device 4 and be connected with the exhanst gas outlet of flue gas producer 5, adopts material to break up the mode that device 4 bottoms feed flue gas, and flue gas producer 5 is a fluid bed flue gas producer.In addition, among Fig. 3,6 is pressure fan; 7 is feeder; 8 is coal bunker; Separator 9 is an inertia separator; Deduster 12 is a sack cleaner.
The coal slime filter cake that moisture after the press filtration is about 30%, apparent size is about 400mm is sent into batcher 2 through belt and is broken into granularity and is not more than the coal slime cluster of grains of 50mm and sends into drying tube 3; Under the effect of gravity, bulk coal slime cluster of grains falls, and the entering material is broken up device 14 in advance, material is broken up device 4 or directly got into material and breaks up device 4, and the fine grained coal slime rises with flue gas; After being lower than about 470 ℃ flue gas that the flue gas producer of 3000kCal/kg burning inferior coal produces and feeding by caloric value from middle part or bottom that material is broken up device 4; To fall into the large coal particles walk drying that material is broken up device 4 from drying tube 3; In this process, accomplish breaing up of coal slime group, the coal slime granularity is met the demands; The fine grained coal slime that meets the demands rise to get into drying tube 3 with flue gas, further dry back get into the separator 9 of drying tube 3 outlets separated after, be delivered to finished room through finished conveying device 11; The low-temperature flue gas of being discharged by separator 9 is discharged into atmosphere through air-introduced machine 13 after deduster 12 dust removal process; The fine grained that deduster 12 produces is sent into coal yard or other place through fine grained transport 10.
Claims (8)
1. a coal slime, drying sludge device for improving quality; Comprise drying tube (3); The lower end of drying tube (3) or side lower part are connected with the outlet that material is broken up device (4); The outlet of drying tube (3) is connected with the import of separator (9); It is characterized in that; Below the outlet of drying tube (3), the material middle part or the upper position place of breaing up the above drying tube (3) of the outlet of device (4) dispose high moisture material import to be dried, the gas approach that material is broken up device (4) is arranged in material and breaks up top or the bottom of device (4) and be connected with the exhanst gas outlet of flue gas producer (5), the tail gas outlet of separator (9) is connected with the import of deduster (12); The product outlet of separator (9) is connected with finished conveying device (11); The outlet of the fine grained of deduster (12) is connected with fine grained transport (10), and the tail gas of deduster (12) exports and is connected with atmosphere through air-introduced machine (13), is positioned under the high moisture material import to be dried in the said drying tube (3), material breaks up position on the device (4) and dispose material and break up device (14) or grid in advance; Said drying tube (3) cross section is circular or square, and differing heights place cross sectional shape is identical or different.
2. device according to claim 1 is characterized in that, said flue gas producer (5) is coal furnace or gas furnace.
3. device according to claim 2 is characterized in that, said coal furnace is chain furnace, fluid bed furnace or coal-powder boiler.
4. device according to claim 1 is characterized in that, it was wind formula impact breaker that said material is broken up device (4), cross wind formula plate-hammer crusher or blower mill.
5. a coal slime, drying sludge process for upgrading; The device of this drying and upgrading process using comprises drying tube (3); The lower end of drying tube (3) or side lower part are connected with the outlet that material is broken up device (4); The outlet of drying tube (3) is connected with the import of separator (9); The middle part or the upper position place of the drying tube (3) that the outlet that the outlet of drying tube (3) is following, material is broken up device (4) is above dispose high moisture material import to be dried; The gas approach that material is broken up device (4) is arranged in material and breaks up top or the bottom of device (4) and be connected with the exhanst gas outlet of flue gas producer (5), and the tail gas outlet of separator (9) is connected with the import of deduster (12), and the product outlet of separator (9) is connected with finished conveying device (11); The fine grained outlet of deduster (12) is connected with fine grained transport (10); The outlet of the tail gas of deduster (12) is connected with atmosphere through air-introduced machine (13), it is characterized in that, 200～850 ℃ of high-temperature flue gas or the air that adopt flue gas producer (5) generation are as drying medium; Sidepiece or bottom that drying medium is broken up device (4) by material feed; Coal slime, mud are fed by the middle part of drying tube (3) or the high moisture material import to be dried on top, and when coal slime, mud were broken, break up in material is broken up device (4), the medium that is dried was predrying; Drying medium carry secretly break up with predrying after get into drying tube (3) than fine grained and carry out further drying; Wherein particle diameter is no more than particle that the design upper limit requires and is carried by air-flow and get in the separator (9), and particle diameter falls into material greater than the particle of the design upper limit and breaks up device (4) and broken up once more; Finished product by separator (9) is collected is sent into coal yard or other place through finished conveying device (11); The tail gas of being discharged by separator (9) enters atmosphere through air-introduced machine (13) after deduster (12) is handled, the fine grained that deduster (12) produces is sent into coal yard or other place through fine grained transport (10).
6. technology according to claim 5 is characterized in that, said drying tube (3) has the pneumatic separation effect simultaneously, can control the grain graininess and the degree of drying that are carried the dried finished of leaving drying tube by drying medium.
7. technology according to claim 5 is characterized in that, the drying medium speed in the said drying tube (3) is at 5～25m/s.
8. technology according to claim 5 is characterized in that, said hot flue gas producer (5) is separately configuration, or utilizes existing boiler as hot flue gas producer, and the hot flue gas through extracting suitable temperature is as drying medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105139690A CN101983942B (en) | 2010-10-20 | 2010-10-20 | Drying and quality improvement apparatus for slime and sludge and technology thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105139690A CN101983942B (en) | 2010-10-20 | 2010-10-20 | Drying and quality improvement apparatus for slime and sludge and technology thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101983942A CN101983942A (en) | 2011-03-09 |
| CN101983942B true CN101983942B (en) | 2012-11-21 |
Family
ID=43641111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105139690A Active CN101983942B (en) | 2010-10-20 | 2010-10-20 | Drying and quality improvement apparatus for slime and sludge and technology thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101983942B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102798134B (en) * | 2011-05-27 | 2015-07-08 | 中国电力工程顾问集团东北电力设计院 | Furnace smoke drying and water recycling warehouse-type fan mill hot air powder supplying and making system |
| CN102798133B (en) * | 2011-05-27 | 2015-06-17 | 中国电力工程顾问集团东北电力设计院 | Fan grinding hot blast powder feeding and pulverizing system utilizing flue gas drying and water recycling |
| CN102798132B (en) * | 2011-05-27 | 2015-04-01 | 中国电力工程顾问集团东北电力设计院 | Fan mill front counter flow type furnace-smoke drying dewatering direct blowing pulverization system |
| CN105135855A (en) * | 2015-10-13 | 2015-12-09 | 江苏新业重工股份有限公司 | Drying system |
| CN106369937B (en) * | 2016-11-01 | 2019-06-04 | 兖矿集团有限公司 | A kind of coal slime drying system and its drying process |
| CN108870870A (en) * | 2018-07-26 | 2018-11-23 | 中国华能集团清洁能源技术研究院有限公司 | A kind of carbide slag drying device and drying means |
| CN109928601A (en) * | 2019-03-28 | 2019-06-25 | 北京科技大学 | Sludge deep drying method and system based on air heat pump |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006136105A1 (en) * | 2005-06-21 | 2006-12-28 | Institute Of Engineering Thermophysics, Chinese Academy Of Sciences | A combined dryer and a method and an equipment for incinerating the wet sludge with the combined dryer |
| CN2921737Y (en) * | 2006-03-22 | 2007-07-11 | 刘云亭 | Slurry granulation dry dehydrating system |
| CN101726167A (en) * | 2008-10-21 | 2010-06-09 | 神华集团有限责任公司 | Smoke semi-closed circulating lignite straight pipe type airflow drying method |
-
2010
- 2010-10-20 CN CN2010105139690A patent/CN101983942B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006136105A1 (en) * | 2005-06-21 | 2006-12-28 | Institute Of Engineering Thermophysics, Chinese Academy Of Sciences | A combined dryer and a method and an equipment for incinerating the wet sludge with the combined dryer |
| CN2921737Y (en) * | 2006-03-22 | 2007-07-11 | 刘云亭 | Slurry granulation dry dehydrating system |
| CN101726167A (en) * | 2008-10-21 | 2010-06-09 | 神华集团有限责任公司 | Smoke semi-closed circulating lignite straight pipe type airflow drying method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101983942A (en) | 2011-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101983942B (en) | Drying and quality improvement apparatus for slime and sludge and technology thereof | |
| CN101705131B (en) | Raw coal upgrading device and method with combination of drying and dry separation | |
| US7275644B2 (en) | Apparatus and method of separating and concentrating organic and/or non-organic material | |
| CN101705132B (en) | Drying and dry separation combination device as well as dry separation and drying combination device | |
| RU2419742C2 (en) | Complex procedure for conversion of all ashes produced with steam boiler into volatile ashes with reduced contents of not-combusted substance and system for processing steam boiler produced ashes by such procedure | |
| AU2014337792B2 (en) | A method and a system for producing a lightweight ceramic aggregate, particularly from coal ash | |
| CN102839032B (en) | Dry separation and drying combined device | |
| CN101440323A (en) | Drying and moulding integrated process for low rank coal | |
| CN101974344B (en) | Drying process for humidifying coals by using coke oven flue gas and device | |
| CN102019275B (en) | Airflow classifying and airflow drying process for coking coal | |
| CN201560175U (en) | Airflow classifying and drying device for coking coal | |
| CN201593043U (en) | Drying and dry-separation combining device | |
| CN203741200U (en) | Rotational-flow spouting device for drying sludge with flue gas waste heat | |
| CN201558751U (en) | Drying and dry separation combination raw coal quality improvement device | |
| CN201560180U (en) | Dry separation and drying combination device | |
| CN201873599U (en) | Drying and upgrading device for coal slim and sludge | |
| CN106810036A (en) | A kind of coal slime, drying sludge device for improving quality and technique | |
| CN102492518A (en) | Quality-improving process and apparatus for high-ash low rank coal | |
| CN203695182U (en) | Twisted rope crushing sorting device | |
| CN202359091U (en) | High-ash low rank coal purification device | |
| CN105588417A (en) | Drying and upgrading device and process for slime and sludge | |
| CN105588419A (en) | Drying and quality increasing device and technology for coal slime and sludge | |
| CN112624637B (en) | High-activity steel slag micro powder preparation system | |
| CN205425621U (en) | Fluidized bed dryer automatic feed device | |
| CN210496790U (en) | Online pulverized coal grading system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |