CN105588417A - Drying and upgrading device and process for slime and sludge - Google Patents
Drying and upgrading device and process for slime and sludge Download PDFInfo
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- CN105588417A CN105588417A CN201410558075.1A CN201410558075A CN105588417A CN 105588417 A CN105588417 A CN 105588417A CN 201410558075 A CN201410558075 A CN 201410558075A CN 105588417 A CN105588417 A CN 105588417A
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- 238000001035 drying Methods 0.000 title claims abstract description 92
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000008569 process Effects 0.000 title claims abstract description 17
- 239000010802 sludge Substances 0.000 title claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 78
- 239000003245 coal Substances 0.000 claims abstract description 53
- 239000007789 gas Substances 0.000 claims abstract description 31
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000003546 flue gas Substances 0.000 claims abstract description 16
- 239000002245 particle Substances 0.000 claims abstract description 12
- 238000013461 design Methods 0.000 claims abstract description 7
- 230000000694 effects Effects 0.000 claims abstract description 5
- 230000008676 import Effects 0.000 claims description 23
- 239000003517 fume Substances 0.000 claims description 19
- 238000013459 approach Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 4
- 239000010419 fine particle Substances 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 239000000843 powder Substances 0.000 claims description 2
- 238000012545 processing Methods 0.000 abstract description 3
- 239000000047 product Substances 0.000 description 9
- 238000007599 discharging Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000003250 coal slurry Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002036 drum drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- 230000007096 poisonous effect Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000011044 inertial separation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 235000012054 meals Nutrition 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Drying Of Solid Materials (AREA)
Abstract
Provided are a drying and upgrading device and process for slime and sludge. The drying and upgrading device is largely composed of a flue gas generation furnace, a feeder, a drying pipe, a material scattering device, a cyclone separator, a fine grain conveyor, a finished product conveyor, a deduster, and a draft fan. Drying mediums generated by the flue gas generation furnace and high-moisture material to be dried fed by the feeder respectively enter the material scattering device and the drying pipe. High-moisture material is scattered and primarily dried in the material scattering device and deeply dried and pneumatically sorted in the drying pipe. Particles with grain diameters less than the upper limit of design are carried into the separator. Coal particles with grain diameters larger than the upper limit of design fall down into the scattering device and then scattered. Finished products collected by the separator are conveyed to a coal yard or other places. Exhaust gas emitted by the separator is discharged to the atmosphere via the draft fan by processing of the deduster. The drying and upgrading device and process for slime and sludge has characteristics of better drying effect, reliable operation, simple system and compact structure.
Description
Technical field
The present invention relates to drying and upgrading technical field, be specifically related to a kind of coal slime, drying sludge device for improving quality and technique.
Background technology
Coal separation is produced being accompanied by a large amount of primary slimes and secondary slime, and because moisture is higher, product sales resistance, can only stack in vacant lot, not only easily causes the wasting of resources, and easily causes environmental pollution. Even after filter press reclaims, slime filter cake fine size, moisture is high, viscosity is large, quality is low, is difficult to realize efficient commercial Application, sells as main outlet taking civilian.
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 filter-pressing coal slime, mixes and burns 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 good press filtration need to be added to moisture again and reach the requirement of coal slime pumping system to ensure its moisture, taking domestic certain 1025t/hCFB boiler as example, the moisture of coal fines that coal preparation plant supplies with is between 22%～26%, carry requirement in order to meet coal slime pumping system, coal slime must be added to moisture to 30% left and right, thereby cause heat loss due to exhaust gas to increase, reduce boiler thermal output, reduced the value of coal slime.
At present, in actual production, a large amount of washing coal slimes can only adopt the modes such as the marketable coal that mixes after washing to process, and owing to containing large quantity of moisture in coal slime, calorific value is low, has reduced 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 sharply ascendant trend in recent years, has produced the high moisture sluge of enormous amount, owing to containing the poisonous and harmful substances such as various pathogen, heavy metal, must process disposal.
And time and the space of increasingly serious land resource to Treatment of Sludge also proposed very high requirement. [0006] advantage of sludge incineration is to reduce largely the volume of mud, decomposes poisonous organic in mud
Matter, can recycle the heat energy that sludge incineration produces, and meets China's sustainable development path, but before the burning of mud, needs to carry out
Dry processing.
Therefore,, after the high moisture material drying upgrading processing such as coal slime, mud, be convenient to realize it and effectively utilize, improve commercial value, reduce floor space, reduce environmental pollution, for enterprise increases economic benefit.
At present, the comparatively extensive coal slime drying process of application is coal slurry rotary drum drying process. This process system mainly by thermal source,
Dispersing device, belt feeder, charger, revolving cylinder, belt discharging machine, air-introduced machine, discharger and power distribution cabinet form, and its general principle is the rotation by cylinder, make coal slime in slow moving process by high warm flue gas drying.
Coal slurry rotary drum drying process system is comparatively simple, and technology is comparatively ripe, but also exist comprise heat transfer coefficient low,
The open defects such as single cover system disposal ability is limited, product grading poor quality, floor space are large.
Summary of the invention
In order to overcome the shortcoming of above-mentioned prior art, the object of this invention is to provide a kind of coal slime, drying sludge device for improving quality and technique, have that drying effect is better, reliable, system is simple, the feature 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 of material scattering 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 middle part of the drying tube 3 more than outlet of material scattering device 4 or upper position place dispose high moisture material import to be dried, the gas approach of material scattering device 4 is arranged in middle part or the bottom of material scattering device 4 and is connected with the exhanst gas outlet of fume generating furnace 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 fine grained outlet of deduster 12 is connected with fine grained conveying device 10, 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 of material scattering device 4, the outlet of drying tube 3 is connected with the import of separator 9, below the outlet of drying tube 3, the middle part of the drying tube 3 more than outlet of material scattering device 4 or upper position place dispose high moisture material import to be dried, the gas approach of material scattering device 4 is arranged in middle part or the bottom of material scattering device 4 and is connected with the exhanst gas outlet of fume generating furnace 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 fine grained outlet of deduster 12 is connected with fine grained conveying device 10, the tail gas outlet of deduster 12 is connected and it is characterized in that with atmosphere through air-introduced machine 13, adopt 200～850 DEG C of high-temperature flue gas that fume generating furnace 5 produces or air as drying medium, drying medium is fed by sidepiece or the bottom of material scattering device 4, coal slime, mud is fed by the middle part of drying tube 3 or the high moisture material import to be dried on top, coal slime, mud is broken in material scattering device 4, when breaing up, the medium that is dried is predrying, drying medium carry secretly break up with predrying after relatively fine particle enter drying tube 3 and be further dried, wherein particle diameter is no more than the particle that the design upper limit requires and is carried and enter in separator 9 by air-flow, and particle diameter is greater than the particle that designs the upper limit and falls into material scattering device 4 and again broken up, the finished product of being collected by separator 9 is sent into coal yard or other place through finished conveying device 11, the tail gas of being discharged by separator 9 enters atmosphere by air-introduced machine 13 after deduster 12 is processed, and the fine grained that deduster 12 produces is sent into coal yard or other place through fine grained conveying device 10.
In said drying tube 3, be positioned at position under high moisture material import to be dried, on material scattering device 4 and dispose the pre-dispersing device 14 of material or grid to control the raw meal particle size that enters material scattering device 4.
Said fume generating furnace 5 can be coal furnace, can be also gas furnace, and coal furnace can be chain furnace, fluid bed furnace or coal-powder boiler. Said hot fume generating furnace 5 can configure separately, also can utilize existing boiler, and as station boiler, as hot fume generating furnace, the hot flue gas by position extracting suitable temperature is as drying medium.
Said material scattering device 4 can adopt wind formula impact crusher, cross wind formula hammering disintegrating machine, blower mill or similar simplification device.
Said drying tube 3 has pneumatic separation effect simultaneously, can control the grain graininess and the degree of drying that are carried the dry finished product that leaves drying tube by drying medium. Drying medium speed in 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, to change the troubled water of 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 drying tube 3, therefore, feeding high moisture material falls into because Action of Gravity Field is descending in material scattering device 4 processes, being adverse current with hot flow of flue gas direction flows to, make the wet stock that enters material scattering device 4 carry out preliminarily dried and sorting, to alleviate the live load of material scattering device and sticky stifled possibility occurs. Drying tube 3 outlets can arrange inertial separator, to strengthen the selection control to discharging-material size.
The present invention has the following advantages:
1, adopt convective drying mode, flue gas and high moisture material heat and mass to be dried are strong, both can accelerate moisture diffusion speed in high moisture material to be dried, and can significantly improve again the disposal ability of single complete equipment and system, single complete equipment can be realized disposal ability substantially more than 150t/h;
2, the mode that adopts material scattering device and drying tube combination to arrange, efficiently solves the antiseized stifled problem in high moisture material dry run;
3, adopting spatial altitude direction is main arrangement, and whole process system floor space is little;
4, by the particular design of pneumatic separation and inertial separation and drying tube, can realize the effective control to product grading, ensure the quality of drying and upgrading product;
5, by selecting and control drying medium initial temperature and high-effective dust-removing equipment being set, can ensure that the weary gas that finally enters atmosphere meets country and local environmental emission standard, free from environmental pollution.
6, SR is little, and power consumption is low.
Brief description of the 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.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is done to more detailed description.
Referring to Fig. 1, the drying tube 3 of this embodiment 1 adopts uiform section structure, and high moisture material import to be dried is configured in that the outlet of drying tube 3 is following, the middle part of more than outlet of material scattering device 4 drying tube 3, realizes middle part feed; 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 coal slime peeler, the gas approach of material scattering device 4 is arranged in the bottom of material scattering device 4 and is connected with the exhanst gas outlet of fume generating furnace 5, adopt material scattering device 4 bottoms to feed the mode of flue gas, fume generating furnace 5 is chain furnace. In addition, in Fig. 1,6 is pressure fan; 7 is feeder; 8 is coal bunker; 9 is cyclone separator; Deduster 12 is sack cleaner.
Referring to Fig. 2, the drying tube 3 of this embodiment 2 adopts variable section structure, and high moisture material import to be dried is configured in that the outlet of drying tube 3 is following, the top of more than outlet of material scattering device 4 drying tube 3, realizes top feed; 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 coal slime breaker, the gas approach of material scattering device 4 is arranged in the top of material scattering device 4 and is connected with the exhanst gas outlet of fume generating furnace 5, adopt material scattering device 4 tops to feed the mode of flue gas, fume generating furnace 5 is chain furnace.
In addition, in Fig. 2,6 is pressure fan; 7 is feeder; 8 is coal bunker; Separator 9 is cyclone separator; Deduster 12 is sack cleaner; 14 for being configured in the pre-dispersing device of material on material scattering device 4 that is positioned in drying tube 3.
Referring to Fig. 3, the drying tube 3 of this embodiment 3 adopts uiform section structure, and high moisture material import to be dried is configured in that the outlet of drying tube 3 is following, the middle part of more than outlet of material scattering device 4 drying tube 3, realizes middle part feed; 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 coal slime peeler, the gas approach of material scattering device 4 is arranged in the bottom of material scattering device 4 and is connected with the exhanst gas outlet of fume generating furnace 5, adopt material scattering device 4 bottoms to feed the mode of flue gas, fume generating furnace 5 is fluidized bed type smoke gas generator. In addition, in Fig. 3,6 is pressure fan; 7 is feeder; 8 is coal bunker; Separator 9 is inertia separator; Deduster 12 is sack cleaner.
The slime filter cake that moisture after 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 to entering the pre-dispersing device 14 of material, material scattering device 4 or directly enter material scattering device 4, and fine grained coal slime rises with flue gas; The flue gas of 470 DEG C of left and right that produced lower than the fume generating furnace of 3000kCal/kg burning inferior coal by caloric value is from the middle part of material scattering device 4 or bottom feed, by dry the large coal particles walk that falls into material scattering device 4 from drying tube 3, in this process, complete breaing up of coal slime group, coal slime granularity is met the demands; The fine grained coal slime meeting the demands rises and enters drying tube 3 with flue gas, enter after further dry separator 9 that drying tube 3 exports separated after, be delivered to finished room through finished conveying device 11; The low-temperature flue gas of being discharged by separator 9, after deduster 12 dust removal process, is discharged into atmosphere by air-introduced machine 13; The fine grained that deduster 12 produces is sent into coal yard or other place through fine grained conveying device 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 of material scattering 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), middle part or the upper position place of drying tube (3) more than the outlet of material scattering device (4) dispose high moisture material import to be dried, the gas approach of material scattering device (4) is arranged in top or the bottom of material scattering device (4) and is connected with the exhanst gas outlet of fume generating furnace (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 fine grained outlet of deduster (12) is connected with fine grained conveying device (10), the tail gas outlet of deduster (12) is connected with atmosphere through air-introduced machine (13), in said drying tube (3), be positioned under high moisture material import to be dried, position on material scattering device (4) disposes the pre-dispersing device of material (14) or grid, said drying tube (3) cross section is circular or square, differing heights place cross sectional shape is identical or different.
2. device according to claim 1, is characterized in that, said fume generating furnace (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, said material scattering device (4) was wind formula impact breaker, mistake 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 of material scattering device (4), the outlet of drying tube (3) is connected with the import of separator (9), below the outlet of drying tube (3), middle part or the upper position place of drying tube (3) more than the outlet of material scattering device (4) dispose high moisture material import to be dried, the gas approach of material scattering device (4) is arranged in top or the bottom of material scattering device (4) and is connected with the exhanst gas outlet of fume generating furnace (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 fine grained outlet of deduster (12) is connected with fine grained conveying device (10), the tail gas outlet of deduster (12) is connected with atmosphere through air-introduced machine (13), it is characterized in that, adopt 200～850 DEG C of high-temperature flue gas that fume generating furnace (5) produces or air as drying medium, drying medium is fed by sidepiece or the bottom of material scattering device (4), coal slime, mud is fed by the middle part of drying tube (3) or the high moisture material import to be dried on top, coal slime, mud is broken in material scattering device (4), when breaing up, the medium that is dried is predrying, drying medium carry secretly break up with predrying after relatively fine particle enter drying tube (3) and be further dried, wherein particle diameter is no more than the particle that the design upper limit requires and is carried and enter in separator (9) by air-flow, and particle diameter is greater than the particle that designs the upper limit and falls into material scattering device (4) and again broken up, the finished product of being collected by separator (9) is sent into coal yard or other place through finished conveying device (11), the tail gas of being discharged by separator (9) enters atmosphere by air-introduced machine (13) after deduster (12) is processed, and the fine grained that deduster (12) produces is sent into coal yard or other place through fine grained conveying device (10).
6. technique according to claim 5, is characterized in that, said drying tube (3) has pneumatic separation effect simultaneously, can control the grain graininess and the degree of drying that are carried the dry finished product that leaves drying tube by drying medium.
7. technique according to claim 5, is characterized in that, the drying medium speed in said drying tube (3) is at 5～25m/s.
8. technique according to claim 5, is characterized in that, said hot fume generating furnace (5) is separately configuration, or utilizes existing boiler as hot fume generating furnace, and the hot flue gas by extracting suitable temperature is as drying medium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558075.1A CN105588417A (en) | 2014-10-21 | 2014-10-21 | Drying and upgrading device and process for slime and sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410558075.1A CN105588417A (en) | 2014-10-21 | 2014-10-21 | Drying and upgrading device and process for slime and sludge |
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| Publication Number | Publication Date |
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| CN105588417A true CN105588417A (en) | 2016-05-18 |
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| CN201410558075.1A Pending CN105588417A (en) | 2014-10-21 | 2014-10-21 | Drying and upgrading device and process for slime and sludge |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2014
- 2014-10-21 CN CN201410558075.1A patent/CN105588417A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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Application publication date: 20160518 |
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