CN102699013A - Pulverized fuel ash comprehensive treatment technique - Google Patents
Pulverized fuel ash comprehensive treatment technique Download PDFInfo
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- CN102699013A CN102699013A CN2012101522118A CN201210152211A CN102699013A CN 102699013 A CN102699013 A CN 102699013A CN 2012101522118 A CN2012101522118 A CN 2012101522118A CN 201210152211 A CN201210152211 A CN 201210152211A CN 102699013 A CN102699013 A CN 102699013A
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Abstract
The invention relates to a pulverized fuel ash comprehensive treatment technique and belongs to the comprehensive treatment technology of pulverized fuel ash discharged by power plants in wet method. The pulverized fuel ash comprehensive treatment technique includes procedures of grading, flotation, natural settling, fine carbon concentration filter pressing, low carbon concentration filter pressing and drying for sorting. Wet pulverized fuel ash enters the grading procedure, +0.045mm pulverized fuel ash enters the natural settling procedure, and coarse pulverized fuel ash is obtained. -0.045mm pulverized fuel ash directly enters the flotation procedure, flotation fine carbon enters the fine carbon concentration filter pressing procedure to obtain fine carbon cakes, flotation low carbon pulverized fuel ash respectively enters the low carbon concentration filter pressing procedure and the drying for sorting procedure to obtain superfine pulverized fuel ash and I grade pulverized fuel ash. The pulverized fuel ash comprehensive treatment technique has the advantages that by aid of the grading procedure, ore grinding is not needed, and comprehensive utilization ratio of pulverized fuel ash is high; system water is recycled and water resources are saved; and the pulverized fuel ash comprehensive treatment technique is simple in process flow, small in device investment and low in energy consumption and maintenance expanse.
Description
Affiliated technical field
The present invention relates to a kind of flyash comprehensive processing technological process, belong to power plant's wet method discharging flyash comprehensive treatment technique.
Background technology
Flyash be coal dust through the coal-burning boiler high-temp combustion, and what take place to produce behind a series of physical-chemical reactions is main finely divided shape solid waste with the glassy phase.
Add up according to interrelated data: average carbon content (loss on ignition) is about 11% in China's partial fuel coal fly ash in electric power plant, do not meet the requirement of GB1596-2005I level flyash loss on ignition, moreover the charcoal in the flyash is one of its key factor of further utilizing of restriction; In the flyash fineness on average greater than 0.045mm account for 40%, do not meet the requirement of GB1596-2005I level fineness of pulverized-coal ash.
The method of present domestic ore grinding has two kinds: wet milling and dry method grinding.
Add up according to interrelated data; China's partial fuel coal fly ash in electric power plant main chemical is silica, alundum (Al, di-iron trioxide; On average account for 48%, 27%, 7% respectively, average Mohs' hardness is respectively 7,8.8,6, belongs to difficult-to-grind materials; No matter adopting wet milling still is the dry method grinding, and not enough below existing: 1) equipment investment is big, energy consumption is high, efficient is low; 2) equipment attrition is fast, maintenance cost is high.
Estimate comprehensively that according to interrelated data China's flyash discharge capacity reached 2.0 hundred million tons in 2010, owing to reasons such as carbon content are high, granularity is big, the total utilization of PCA rate is low.In order effectively to make good use of these wet fly-ashes, let it turn waste into wealth, thereby reach both energy-saving and emission-reduction, protect the purpose of environment again, be necessary to design a kind of flyash comprehensive processing technological process.
Summary of the invention
The objective of the invention is to overcome the prior art weak point, a kind of simple, energy-conservation flyash comprehensive processing technological process is provided.
A kind of flyash comprehensive processing technological process of the present invention: comprise that classification operation, flotation operation, natural subsidence operation, smart charcoal concentrate the press filtration operation, low charcoal concentrates press filtration operation, oven dry sorting operation.
Described classification operation: through the classifying equipoment classification, the flyash of+0.045mm gets into the bevel deposition pond of subsequent processing with wet fly-ash; The flyash of-0.045mm directly gets into the floatation equipment of subsequent processing.
Described flotation operation: the flyash of-0.045mm is after the floatation equipment flotation, and the smart charcoal of flotation gets in the smart charcoal concentrator of subsequent processing; The low powdered carbon coal ash of flotation directly gets in the low charcoal concentrator of subsequent processing.
Described smart charcoal concentrates the press filtration operation: flow to certainly in the smart charcoal concentrator concentrate charcoal slurry through concentrator concentrate, after the filtering equipment press filtration; Filtrate water directly recycles as system water; And to obtain moisture be 23% smart charcoal cake, and acting as a fuel is used for boiler combustion or preparing active carbon etc.
Described low charcoal concentrates the press filtration operation: flow to certainly in the low charcoal concentrator low powdered carbon coal ash paste through concentrator concentrate, after the filtering equipment press filtration; Filtrate water directly recycles as system water; And to obtain moisture be 23% low powdered carbon coal ash cake, and low powdered carbon coal ash cake gets in the drying plant of subsequent processing after fragmentation.
Described oven dry sorting operation: get into low powdered carbon coal ash in the drying plant through drying plant oven dry, the classification of screening installation fineness after, obtain moisture less than 1% superfined flyash and I level flyash.
The main application of superfined flyash: 1) quote the method for " high-mark cement+flyash in great mixed amount+high efficiency water reducing agent " that developing in the world, produce high-grade concrete; 2) as the inserts of plastics, rubber etc.; 3) make insulation material, flyash combined high temperature ceramic coating etc.
The main application and the effect of I level flyash: be applicable to preparation pump concrete, mass concrete, impervious structural concrete, sulfate resistance concrete, anti-soft water corrosion concrete, Underwater Engineering concrete, prepakt concrete and roller compacted concrete.Adding coal ash in concrete has been practiced thrift a large amount of cement and fine aggregate; Reduced water consumption; Improved the workability of concrete mix; Strengthen concrete pumpability; Reduced concrete creeping; Reduce the heat of hydration, heat energy dilatancy; Improve concrete impervious ability; Increase concrete ground modification property.
Described natural subsidence operation: get into the bevel deposition pond+flyash of 0.045mm through cement inclined-plane natural subsidence after; Deposition water directly recycles as system water; And solid content is greater than 75% meal coal ash; As road-making material (embankment, sub-surface, road surface) or backfilling material (structure backfill, build backfill, fill out low-lying land and wasteland, filling mine, subsidence area, colliery, building factory ditch), also can be used as the admixture of flyash brick, fly ash building block, weight flyash clay sintered brick.Flyash is as building the road or backfilling material, and equipment investment is little, instant effect.
The invention has the beneficial effects as follows:
1) through the classification operation, do not need ore grinding, the total utilization of PCA rate is high, turns waste into wealth;
2) system water recycles, the conserve water resource;
3) technological process is simple, equipment investment is little, energy consumption is low, maintenance cost is low.
Description of drawings
Accompanying drawing is the process chart of a kind of flyash comprehensive processing technological process of the present invention.
The smart charcoal of 1-wet fly-ash 2-classification operation 3-flotation operation 4-concentrates the low charcoal of the smart charcoal cake of press filtration operation 5-6-natural subsidence operation 7-and concentrates press filtration operation 8-oven dry sorting operation 9-superfined flyash 10-I level flyash 11-meal coal ash
The specific embodiment
After wet fly-ash (1) gets into the classified sizing of equipment of classification operation (2); After the flyash of+0.045mm gets into natural subsidence operation (6) process cement inclined-plane natural subsidence; Deposition water directly recycles as system water, and the acquisition solid content is greater than 75% meal coal ash (11).The flyash of-0.045mm directly gets into flotation operation (3) through after the floatation equipment flotation: the smart charcoal of flotation get into smart charcoal concentrate press filtration operation (4) through concentrator concentrate, after the filtering equipment press filtration; Filtrate water directly recycles as system water, and acquisition moisture is 23% smart charcoal cake (5); The low powdered carbon coal ash of flotation gets into directly that the concentrated press filtration operation (7) of low charcoal is concentrated through concentrator, after the filtering equipment press filtration; Filtrate water directly recycles as system water; Low powdered carbon coal ash get into oven dry sorting operation (8) through drying plant oven dry, the classification of screening installation fineness after, obtain moisture less than 1% superfined flyash (9) and I level flyash (10).
Claims (7)
1. a kind of flyash comprehensive processing technological process of the present invention is characterized in that: comprise that classification operation, flotation operation, natural subsidence operation, smart charcoal concentrate the press filtration operation, low charcoal concentrates press filtration operation, oven dry sorting operation.
2. a kind of flyash comprehensive processing technological process according to claim 1 is characterized in that: described classification operation is that wet fly-ash is passed through the classifying equipoment classification, and the flyash of+0.045mm gets into the bevel deposition pond of subsequent processing; The flyash of-0.045mm directly gets into the floatation equipment of subsequent processing.
3. a kind of flyash comprehensive processing technological process according to claim 1 is characterized in that: and described flotation operation is-and the flyash of 0.045mm is after the floatation equipment flotation, and the smart charcoal of flotation gets in the smart charcoal concentrator of subsequent processing; The low powdered carbon coal ash of flotation directly gets in the low charcoal concentrator of subsequent processing.
4. a kind of flyash comprehensive processing technological process according to claim 1; It is characterized in that: described smart charcoal concentrates that the press filtration operation is that concentrate charcoal slurry in the smart charcoal concentrator concentrates through concentrator from flowing to, after the filtering equipment press filtration; Filtrate water directly recycles as system water, and acquisition moisture is 23% smart charcoal cake.
5. a kind of flyash comprehensive processing technological process according to claim 1; It is characterized in that: described low charcoal concentrates that the press filtration operation is that low powdered carbon coal ash paste in the low charcoal concentrator concentrates through concentrator from flowing to, after the filtering equipment press filtration; Filtrate water directly recycles as system water; And to obtain moisture be 23% low powdered carbon coal ash cake, and low powdered carbon coal ash cake gets in the drying plant of subsequent processing after fragmentation.
6. a kind of flyash comprehensive processing technological process according to claim 1; It is characterized in that: described oven dry sorting operation be get into low powdered carbon coal ash in the drying plant through drying plant oven dry, the classification of screening installation fineness after, obtain moisture less than 1% superfined flyash and I level flyash.
7. a kind of flyash comprehensive processing technological process according to claim 1; It is characterized in that: described natural subsidence operation is after getting into the flyash process cement inclined-plane natural subsidence of bevel deposition pond+0.045mm; Deposition water directly recycles as system water, and the acquisition solid content is greater than 75% meal coal ash.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210152211.8A CN102699013B (en) | 2012-05-09 | 2012-05-09 | Pulverized fuel ash comprehensive treatment technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210152211.8A CN102699013B (en) | 2012-05-09 | 2012-05-09 | Pulverized fuel ash comprehensive treatment technique |
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| CN102699013A true CN102699013A (en) | 2012-10-03 |
| CN102699013B CN102699013B (en) | 2015-01-21 |
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| CN201210152211.8A Expired - Fee Related CN102699013B (en) | 2012-05-09 | 2012-05-09 | Pulverized fuel ash comprehensive treatment technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695066A (en) * | 2013-12-18 | 2014-04-02 | 贵州赤天化集团有限责任公司 | Recycling method of fine slag discharged by anthracite coal water slurry gasifier and structure thereof |
| CN107200494A (en) * | 2017-05-18 | 2017-09-26 | 新疆北新路桥集团股份有限公司 | A kind of coal ash, slag sorting processing method and super fine powder additives |
| CN109369049A (en) * | 2018-11-09 | 2019-02-22 | 中广核工程有限公司 | The removal methods of ammonium component are remained in flyash |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245740A (en) * | 1999-06-28 | 2000-03-01 | 李宗华 | Refloatation method of fly-ash and refuse and its technological process |
| CN1864802A (en) * | 2006-04-25 | 2006-11-22 | 开滦精煤股份有限公司范各庄矿业分公司 | Process for dehydrating floatation coal |
| CN101185933A (en) * | 2006-11-16 | 2008-05-28 | 廖昌禧 | Coal ash resource treating method |
| CN101433880A (en) * | 2008-11-07 | 2009-05-20 | 倪志群 | Method for sorting coal ash |
| US20090301938A1 (en) * | 2006-12-11 | 2009-12-10 | Kazuyoshi Matsuo | Method of removing unburned carbon from coal ash |
| US20100051516A1 (en) * | 2006-12-26 | 2010-03-04 | Kazuyoshi Matsuo | Apparatus for removing unburned carbon in fly ash |
| CN101797575A (en) * | 2010-03-09 | 2010-08-11 | 天津城市建设学院 | Flyash treatment method for waste incineration |
| CN102674720A (en) * | 2012-06-06 | 2012-09-19 | 湖南华天能环保科技开发有限公司 | Preparation technology for extracting carbon powder, iron core powder, primary pulverized fuel ash and secondary pulverized fuel ash from pulverized fuel ash |
-
2012
- 2012-05-09 CN CN201210152211.8A patent/CN102699013B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1245740A (en) * | 1999-06-28 | 2000-03-01 | 李宗华 | Refloatation method of fly-ash and refuse and its technological process |
| CN1864802A (en) * | 2006-04-25 | 2006-11-22 | 开滦精煤股份有限公司范各庄矿业分公司 | Process for dehydrating floatation coal |
| CN101185933A (en) * | 2006-11-16 | 2008-05-28 | 廖昌禧 | Coal ash resource treating method |
| US20090301938A1 (en) * | 2006-12-11 | 2009-12-10 | Kazuyoshi Matsuo | Method of removing unburned carbon from coal ash |
| US20100051516A1 (en) * | 2006-12-26 | 2010-03-04 | Kazuyoshi Matsuo | Apparatus for removing unburned carbon in fly ash |
| CN101433880A (en) * | 2008-11-07 | 2009-05-20 | 倪志群 | Method for sorting coal ash |
| CN101797575A (en) * | 2010-03-09 | 2010-08-11 | 天津城市建设学院 | Flyash treatment method for waste incineration |
| CN102674720A (en) * | 2012-06-06 | 2012-09-19 | 湖南华天能环保科技开发有限公司 | Preparation technology for extracting carbon powder, iron core powder, primary pulverized fuel ash and secondary pulverized fuel ash from pulverized fuel ash |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103695066A (en) * | 2013-12-18 | 2014-04-02 | 贵州赤天化集团有限责任公司 | Recycling method of fine slag discharged by anthracite coal water slurry gasifier and structure thereof |
| CN107200494A (en) * | 2017-05-18 | 2017-09-26 | 新疆北新路桥集团股份有限公司 | A kind of coal ash, slag sorting processing method and super fine powder additives |
| CN107200494B (en) * | 2017-05-18 | 2019-08-20 | 新疆北新路桥集团股份有限公司 | A kind of coal ash, slag sorting processing method and super fine powder additives |
| CN109369049A (en) * | 2018-11-09 | 2019-02-22 | 中广核工程有限公司 | The removal methods of ammonium component are remained in flyash |
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| CN102699013B (en) | 2015-01-21 |
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Granted publication date: 20150121 Termination date: 20180509 |