CN107309239A - A kind of coal ash separation method of coal chemical industry gasifier slag - Google Patents
A kind of coal ash separation method of coal chemical industry gasifier slag Download PDFInfo
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- CN107309239A CN107309239A CN201710353903.1A CN201710353903A CN107309239A CN 107309239 A CN107309239 A CN 107309239A CN 201710353903 A CN201710353903 A CN 201710353903A CN 107309239 A CN107309239 A CN 107309239A
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- 239000002893 slag Substances 0.000 title claims abstract description 39
- 239000003245 coal Substances 0.000 title claims abstract description 30
- 239000000126 substance Substances 0.000 title claims abstract description 27
- 238000000926 separation method Methods 0.000 title claims abstract description 24
- 239000010883 coal ash Substances 0.000 title claims abstract description 23
- 238000005188 flotation Methods 0.000 claims abstract description 62
- 239000003610 charcoal Substances 0.000 claims abstract description 44
- 239000010881 fly ash Substances 0.000 claims abstract description 36
- 239000002994 raw material Substances 0.000 claims abstract description 26
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 17
- 239000011574 phosphorus Substances 0.000 claims abstract description 17
- 238000006243 chemical reaction Methods 0.000 claims abstract description 14
- 238000005187 foaming Methods 0.000 claims abstract description 11
- 238000001035 drying Methods 0.000 claims abstract description 10
- 238000003860 storage Methods 0.000 claims abstract 2
- 239000002956 ash Substances 0.000 claims description 83
- 239000013049 sediment Substances 0.000 claims description 57
- 239000002002 slurry Substances 0.000 claims description 44
- 239000011344 liquid material Substances 0.000 claims description 40
- 239000011268 mixed slurry Substances 0.000 claims description 36
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- 239000004088 foaming agent Substances 0.000 claims description 25
- 238000002309 gasification Methods 0.000 claims description 18
- 230000000977 initiatory effect Effects 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims description 12
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 10
- 230000035484 reaction time Effects 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 239000003250 coal slurry Substances 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 claims description 5
- WUOACPNHFRMFPN-VIFPVBQESA-N (R)-(+)-alpha-terpineol Chemical group CC1=CC[C@H](C(C)(C)O)CC1 WUOACPNHFRMFPN-VIFPVBQESA-N 0.000 claims description 5
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 claims description 5
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 claims description 5
- 239000005642 Oleic acid Substances 0.000 claims description 5
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 5
- 239000004615 ingredient Substances 0.000 claims description 5
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 claims description 5
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000002808 molecular sieve Substances 0.000 claims description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 2
- 239000000463 material Substances 0.000 claims 2
- 239000002817 coal dust Substances 0.000 claims 1
- 238000011084 recovery Methods 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 2
- 230000018044 dehydration Effects 0.000 description 16
- 238000006297 dehydration reaction Methods 0.000 description 16
- 239000003814 drug Substances 0.000 description 4
- 239000002562 thickening agent Substances 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention provides a kind of coal ash separation method of coal chemical industry gasifier slag, the separation method, including pretreatment of raw material, catching reaction, foaming reaction, flotation, drying, storage.The isolated smart charcoal of the present invention, phosphorus content is high, the smart charcoal, and phosphorus content is 85 90%；Volatile matter content is 2.5 2.8%, moisture≤1%；The rate of recovery is 90 95%；The present invention reclaims obtained flyash, and loss on ignition is 2.5 2.9%, and the rate of recovery of flyash is up to 85 89%, water demand ratio≤93%, stability≤2mm, activity index 28d >=77%, water content≤0.1%.
Description
Technical field
The present invention relates to a kind of coal ash separation method of coal chemical industry gasifier slag, belong to solid waste technical field.
Background technology
Coal chemical industry primary solids waste is the clinker of gasification furnace, i.e. coal ash, and coal ash is higher due to phosphorus content, loss on ignition
Often beyond 30%, it is impossible to be directly used in construction market.
Because phosphorus content is general more than 30% in clinker, but calorific value is low, and calorific value is existing substantially within 2000 kilocalories
Boiler can not be applied directly, unique to solve solid waste method for burning or fill, because boiler ash sediment is used through gasification furnace high temperature anaerobic,
Its volatile component, which has been volatilized, to be utilized, and calorific value is relatively low, can only be entrained in cleaned coal and be burnt, cause disposal ability low；By stove
Lime-ash carries out landfill stacking processing, not only pollutes environment but also waste of resource.
In addition, contain a large amount of micro-solid particulate matters in boiler ash sediment, easily airborne dust, it is bulky to cut landfill place, takes
A large amount of land resources, heavy damage ecological environment influences resident's normal life.
The deficiency that prior art is present：
The rate of recovery of smart charcoal and flyash is relatively low；
Obtained smart charcoal is reclaimed, phosphorus content is relatively low.
The content of the invention
To solve the deficiencies in the prior art, the present invention provides a kind of coal ash separation side of coal chemical industry gasifier slag
Method, to realize following goal of the invention：
（1）Improve the rate of recovery and the rate of recovery of flyash of smart charcoal；
（2）Smart charcoal after recovery, phosphorus content is more than 85%；Flyash meets I grades of standards；
（3）Charcoal after recovery is used for the raw material for making activated carbon, and ash is used to make the raw materials such as molecular sieve, one-level flyash.
In order to solve the above technical problems, the technical scheme that the present invention takes is as follows：
A kind of coal ash separation method of coal chemical industry gasifier slag, comprises the following steps:
（1）Pretreatment of raw material：
Raw material is the boiler ash sediment slurry that solid content is 5%, comes from coal chemical industry gasification furnace, is concentrated into raw material using thickener solid
Content is 12-19%, is cooled to 40 DEG C or so, forms boiler ash sediment slurry；
The raw material, comes from water-coal slurry furnace or gasification furnace；The water-coal slurry furnace is lurgi gasifier, moral scholar drum or four nozzles；
The gasification furnace, is Tsing-Hua University's stove, east stove, section's woods stove, space flight stove or GSP；
The coal chemical industry gasification furnace, i.e. output high-carbon coal ash loss on ignition phosphorus content in 35%-70%.
Boiler ash sediment in the raw material, phosphorus content is 35-70%.
（2）Catching reaction：
Agent for capturing and step（1）Gained boiler ash sediment slurry is continuously added to by a certain percentage through measuring pump, and the medicament reaction time is 2-3
Minute, mixing speed 180-220r/min obtains initial action mixed slurry；
The additional proportion of boiler ash sediment and agent for capturing in the boiler ash sediment slurry is 1 ton：4.5-5.5kg；
The charging rate of the boiler ash sediment slurry is 2m3/h；
The agent for capturing, is made up of cyclohexanone, oleic acid, and mass ratio is 1:1.5-2.5.
（3）Foaming reaction
Above-mentioned initial action mixed slurry is flowed into foaming retort, and foaming agent is continuously added to by a certain percentage；Reaction time is 2-3
Minute, mixing speed is set as 180-220r/min, must treat flotation slurry.
The mass ratio of boiler ash sediment and foaming agent is 1 ton in the initial action mixed slurry：4.8-5.3kg；
The dosing speed of the foaming agent is 10L per hour.
The foamer ingredient is terpenol, terpenic oil, and mass ratio is 1: 0.8-1.1.
（4）Flotation step
Including one-level flotation step, secondary floatation step；
In one-level flotation step：
Flotation slurry will be treated through microvesicle high-pressure jet column flotation, air enters flotation column, and form bubble, charcoal is attached to bubble
Around, flotation and go out, obtain in the first smart charcoal liquid material and primary election slag ash liquid material, the primary election slag ash liquid material, in boiler ash sediment
Carbon content is less than 10%；
The flotation column, mesh size 2cm controls 0.12-0.20 millimeters of bubble diameter, 0.6-0.8 meters of depth of foam, air
Pressure 4-6bars；
Agent for capturing is proportionally added into primary election slag ash liquid material, is stirred 2-3 minutes, mixing speed 150-250r/min obtains middle
Mixed slurry；
The primary election slag ash liquid material, the mass ratio of middle boiler ash sediment and agent for capturing is 1 ton：4.5-5.5kg；
Foaming agent is continuously added in middle mixed slurry according to grey slurry certain proportion to stir 2-3 minutes, mixing speed 150-250r/
Min, obtains secondary middle mixed slurry；
The mass ratio of the middle mixed slurry, boiler ash sediment and foaming agent is 1 ton：4.8-5.3kg；
In secondary floatation step：
Secondary middle mixed slurry is delivered to microvesicle high-pressure jet flotation column and carries out flotation, obtains flyash liquid material and the second smart charcoal
Liquid material.
（5）Dehydration
It is dehydrated after obtained by flotation first smart charcoal liquid material and the second smart charcoal liquid material are mixed by vacuum band-type filter machine, it is smart after dehydration
Charcoal moisture can drop to 12-25%；
Obtained flyash is dehydrated by vacuum band-type filter machine, flyash moisture can drop to 12-25% after dehydration.
（6）Baking step
Three-cylinder drier drying is respectively adopted in smart charcoal, flyash after dehydration, and the flyash of drying, smart charcoal moisture are less than 1%.
Compared with prior art, the beneficial effect that the present invention is obtained：
（1）The isolated smart charcoal of the present invention, phosphorus content is high, the smart charcoal, and phosphorus content is 85-90%；Volatile matter content is 2.5-
2.8%, moisture≤1%；The rate of recovery is 90-95%；
（2）The present invention reclaims obtained flyash, and loss on ignition is 2.5-2.9%, and the rate of recovery of flyash reaches 85-89%, water requirement
Than≤93%, stability≤2mm, activity index 28d >=77%, water content≤0.1%.
Embodiment
With reference to specific example, the present invention is described in further detail, these embodiments are only for illustration sheet
Invention, rather than the scope of the present invention is limited in any way.
A kind of coal ash separation method of coal chemical industry gasifier slag of embodiment 1
Comprise the following steps:
（1）Pretreatment of raw material：
Raw material is the boiler ash sediment slurry that solid content is 5%, comes from coal chemical industry gasification furnace, is concentrated into raw material using thickener solid
Content is 15%, is cooled to 40 DEG C or so, forms boiler ash sediment slurry；
The raw material, comes from water-coal slurry furnace or gasification furnace；The water-coal slurry furnace is lurgi gasifier, moral scholar drum or four nozzles；
The gasification furnace, is Tsing-Hua University's stove, east stove, section's woods stove, space flight stove or GSP；
Boiler ash sediment in the raw material, phosphorus content is 35%；
Boiler ash sediment in the raw material, dry basis ash content（Aad）For 59.94%, butt volatile matter（Vad）For 2.7%, butt ash free basis
Volatile matter（Vadf）For 9.53%, butt low heat valve is 8055KJ/Kg（1924 kilocalories）, As-received bottom position caloric value be
4798KJ/Kg（1146 kilocalories）, sulphur（S）Content is 0.16%.
（2）Catching reaction：
Agent for capturing and step（1）Gained boiler ash sediment slurry is continuously added to by a certain percentage through measuring pump, and the medicament reaction time is 2-3
Minute, mixing speed 190r/min obtains initial action mixed slurry；
The additional proportion of boiler ash sediment and agent for capturing in the boiler ash sediment slurry is 1 ton：5.5kg；
The charging rate of the boiler ash sediment slurry is 2m3/h；
The agent for capturing, is made up of cyclohexanone, oleic acid, and mass ratio is 1:1.7.
（3）Foaming reaction
Above-mentioned initial action mixed slurry is flowed into foaming retort, and foaming agent is continuously added to by a certain percentage；Reaction time is 2-3
Minute, mixing speed is set as 190r/min, must treat flotation slurry.
The mass ratio of boiler ash sediment and foaming agent is 1 ton in the initial action mixed slurry：5.2kg；
The dosing speed of the foaming agent is 10L per hour.
The foamer ingredient is terpenol, terpenic oil, and mass ratio is 1:1.1.
（4）Flotation step
Including one-level flotation step, secondary floatation step；
In one-level flotation step：
Flotation slurry will be treated through microvesicle high-pressure jet column flotation, air enters flotation column, and form bubble, charcoal is attached to bubble
Around, flotation and go out, obtain in the first smart charcoal liquid material and primary election slag ash liquid material, the primary election slag ash liquid material, in boiler ash sediment
Carbon content is less than 10%；
The flotation column, mesh size 2cm controls 0.15 millimeter of bubble diameter, 0.6-0.8 meters of depth of foam, air pressure
4bars；
Agent for capturing is proportionally added into primary election slag ash liquid material, is stirred 2-3 minutes, mixing speed 190r/min obtains middle mixing
Slurry；
The primary election slag ash liquid material, the mass ratio of middle boiler ash sediment and agent for capturing is 1 ton：5.5kg；
Foaming agent is continuously added in middle mixed slurry according to grey slurry certain proportion to stir 2-3 minutes, mixing speed 190r/min,
Obtain secondary middle mixed slurry；
The mass ratio of the middle mixed slurry, boiler ash sediment and foaming agent is 1 ton：5.2kg；
In secondary floatation step：
Secondary middle mixed slurry is delivered to microvesicle high-pressure jet flotation column and carries out flotation, obtains flyash liquid material and the second smart charcoal
Liquid material.
（5）Dehydration
It is dehydrated after obtained by flotation first and second smart charcoal liquid materials are mixed by vacuum band-type filter machine, smart charcoal moisture can after dehydration
Drop to 12%；
Obtained flyash is dehydrated by vacuum band-type filter machine, flyash moisture can drop to 15% after dehydration.
（6）Baking step
Three-cylinder drier drying is respectively adopted in smart charcoal, flyash after dehydration, and the flyash of drying, smart charcoal moisture are less than 1%.
Isolated smart charcoal, phosphorus content is 85%, and volatile matter content is 2.5%, and the rate of recovery is up to 90%, obtained flyash
Loss on ignition is 2.5%, and the rate of recovery of flyash is up to 85%.
A kind of coal ash separation method of coal chemical industry gasifier slag of embodiment 2
Comprise the following steps:
（1）Pretreatment of raw material：
Raw material is the boiler ash sediment slurry that solid content is 5%, comes from coal chemical industry gasification furnace, is concentrated into raw material using thickener solid
Content is 19%, is cooled to 40 DEG C or so, forms boiler ash sediment slurry；
The raw material, comes from water-coal slurry furnace or gasification furnace；The water-coal slurry furnace is lurgi gasifier, moral scholar drum or four nozzles；
The gasification furnace, is Tsing-Hua University's stove, east stove, section's woods stove, space flight stove or GSP；
Boiler ash sediment in the raw material, phosphorus content is 50%.
（2）Catching reaction：
Agent for capturing and step（1）Gained boiler ash sediment slurry is continuously added to by a certain percentage through measuring pump, and the medicament reaction time is 2-3
Minute, mixing speed 200r/min obtains initial action mixed slurry；
The additional proportion of boiler ash sediment and agent for capturing in the boiler ash sediment slurry is 1 ton：4.8kg；
The charging rate of the boiler ash sediment slurry is 2m3/h；
The agent for capturing, is made up of cyclohexanone, oleic acid, and mass ratio is 1:2.3.
（3）Foaming reaction
Above-mentioned initial action mixed slurry is flowed into foaming retort, and foaming agent is continuously added to by a certain percentage；Reaction time is 2-3
Minute, mixing speed is set as 200r/min, must treat flotation slurry.
The mass ratio of boiler ash sediment and foaming agent is 1 ton in the initial action mixed slurry：5.0kg；
The dosing speed of the foaming agent is 10L per hour.
The foamer ingredient is terpenol, terpenic oil, and mass ratio is 1:0.8.
（4）Flotation step
Including one-level flotation step, secondary floatation step；
In one-level flotation step：
Flotation slurry will be treated through microvesicle high-pressure jet column flotation, air enters flotation column, and form bubble, charcoal is attached to bubble
Around, flotation and go out, obtain in the first smart charcoal liquid material and primary election slag ash liquid material, the primary election slag ash liquid material, in boiler ash sediment
Carbon content is less than 10%；
The flotation column, mesh size 2cm controls 0.19 millimeter of bubble diameter, 0.8 meter of depth of foam, air pressure 6bars；
Agent for capturing is proportionally added into primary election slag ash liquid material, is stirred 2-3 minutes, mixing speed 200r/min obtains middle mixing
Slurry；
The primary election slag ash liquid material, the mass ratio of middle boiler ash sediment and agent for capturing is 1 ton：4.8kg；
Foaming agent is continuously added in middle mixed slurry according to grey slurry certain proportion to stir 2-3 minutes, mixing speed 200r/min,
Obtain secondary middle mixed slurry；
The mass ratio of the middle mixed slurry, boiler ash sediment and foaming agent is 1 ton：5.0kg；
In secondary floatation step：
Secondary middle mixed slurry is delivered to microvesicle high-pressure jet flotation column and carries out flotation, obtains flyash liquid material and the second smart charcoal
Liquid material.
（5）Dehydration
It is dehydrated after obtained by flotation first and second smart charcoal liquid materials are mixed by vacuum band-type filter machine, smart charcoal moisture can after dehydration
Drop to 20%；
Obtained flyash is dehydrated by vacuum band-type filter machine, flyash moisture can drop to 17% after dehydration.
（6）Baking step
Three-cylinder drier drying is respectively adopted in smart charcoal, flyash after dehydration, and the flyash of drying, smart charcoal moisture are less than 1%.
Isolated smart charcoal, phosphorus content is 88%, and volatile matter content is 2.7%, and the rate of recovery is up to 93%, obtained flyash
Loss on ignition is 2.7%, and the rate of recovery of flyash is up to 87%.
A kind of coal ash separation method of coal chemical industry gasifier slag of embodiment 3
Comprise the following steps:
（1）Pretreatment of raw material：
Raw material is the boiler ash sediment slurry that solid content is 5%, comes from coal chemical industry gasification furnace, is concentrated into raw material using thickener solid
Content is 17%, is cooled to 40 DEG C or so, forms boiler ash sediment slurry；
The raw material, comes from water-coal slurry furnace or gasification furnace；The water-coal slurry furnace is lurgi gasifier, moral scholar drum or four nozzles；
The gasification furnace, is Tsing-Hua University's stove, east stove, section's woods stove, space flight stove or GSP；
The space flight stove belongs to Kaifeng Jin Kai Chemical Co., Ltd.s, space flight stove be Shenmu County and Jincheng coal.
Boiler ash sediment in the raw material, phosphorus content is 55%.
（2）Catching reaction：
Agent for capturing and step（1）Gained boiler ash sediment slurry is continuously added to by a certain percentage through measuring pump, and the medicament reaction time is 2-3
Minute, mixing speed 210r/min obtains initial action mixed slurry；
The additional proportion of boiler ash sediment and agent for capturing in the boiler ash sediment slurry is 1 ton：4.5kg；
The charging rate of the boiler ash sediment slurry is 2m3/h；
The agent for capturing, is made up of cyclohexanone, oleic acid, and mass ratio is 1:2.
（3）Foaming reaction
Above-mentioned initial action mixed slurry is flowed into foaming retort, and foaming agent is continuously added to by a certain percentage；Reaction time is 2-3
Minute, mixing speed is set as 210r/min, must treat flotation slurry.
The mass ratio of boiler ash sediment and foaming agent is 1 ton in the initial action mixed slurry：4.8kg；
The dosing speed of the foaming agent is 10L per hour.
The foamer ingredient is terpenol, terpenic oil, and mass ratio is 1:1.
（4）Flotation step
Including one-level flotation step, secondary floatation step；
In one-level flotation step：
Flotation slurry will be treated through microvesicle high-pressure jet column flotation, air enters flotation column, and form bubble, charcoal is attached to bubble
Around, flotation and go out, obtain in the first smart charcoal liquid material and primary election slag ash liquid material, the primary election slag ash liquid material, in boiler ash sediment
Carbon content is less than 10%；
The flotation column, mesh size 2cm controls 0.2 millimeter of bubble diameter, 0.7 meter of depth of foam, air pressure 5bars；
Agent for capturing is proportionally added into primary election slag ash liquid material, is stirred 2-3 minutes, mixing speed 210r/min obtains middle mixing
Slurry；
The primary election slag ash liquid material, the mass ratio of middle boiler ash sediment and agent for capturing is 1 ton：4.5kg；
Foaming agent is continuously added in middle mixed slurry according to grey slurry certain proportion to stir 2-3 minutes, mixing speed 210r/min,
Obtain secondary middle mixed slurry；
The mass ratio of the middle mixed slurry, boiler ash sediment and foaming agent is 1 ton：4.8kg；
In secondary floatation step：
Secondary middle mixed slurry is delivered to microvesicle high-pressure jet flotation column and carries out flotation, obtains flyash liquid material and the second smart charcoal
Liquid material.
（5）Dehydration
It is dehydrated after obtained by flotation first and second smart charcoal liquid materials are mixed by vacuum band-type filter machine, smart charcoal moisture can after dehydration
Drop to 15%；
Obtained flyash is dehydrated by vacuum band-type filter machine, flyash moisture can drop to 12% after dehydration.
（6）Baking step
Three-cylinder drier drying is respectively adopted in smart charcoal, flyash after dehydration, and the flyash of drying, smart charcoal moisture are less than 1%.
Isolated smart charcoal, phosphorus content is 90%, and volatile matter content is 2.8%, and the rate of recovery is up to 95%, obtained flyash
Loss on ignition is 2.9%, and the rate of recovery of flyash is up to 89%.
Unless otherwise indicated, the percentage employed in the present invention is percetage by weight, ratio of the present invention,
For mass ratio.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be modified to the technical scheme described in foregoing embodiments, or equivalent substitution is carried out to which part technical characteristic.
Within the spirit and principles of the invention, any modification, equivalent substitution and improvements made etc., should be included in the present invention's
Within protection domain.
Claims (10)
1. a kind of coal ash separation method of coal chemical industry gasifier slag, it is characterised in that：The separation method, including raw material are located in advance
Reason, catching reaction, foaming reaction, flotation, drying, storage.
2. a kind of coal ash separation method of coal chemical industry gasifier slag according to claim 1, it is characterised in that：The original
Material pretreatment, the boiler ash sediment slurry for taking solid content to be 3-7% is concentrated into solid content for 12-19%, is cooled to 38-42 DEG C, forms stove
Lime-ash slurry；The boiler ash sediment, phosphorus content is 35-70%.
3. a kind of coal ash separation method of coal chemical industry gasifier slag according to claim 1, it is characterised in that：It is described to catch
Reaction is caught, the agent for capturing used is made up of cyclohexanone, oleic acid, mass ratio 1:1.5-2.5.
4. a kind of coal ash separation method of coal chemical industry gasifier slag according to claim 3, it is characterised in that：Boiler ash sediment
Slurry and agent for capturing are continuously added to, and the reaction time is 2-3 minutes, and mixing speed 180-220r/min obtains initial action mixing slurry
Material；
The additional proportion of boiler ash sediment and agent for capturing in the boiler ash sediment slurry is 1 ton：4.5-5.5kg；
The charging rate of the boiler ash sediment slurry is 2m3/h。
5. a kind of coal ash separation method of coal chemical industry gasifier slag according to claim 4, it is characterised in that：Described
Bubble reaction, initial action mixed slurry is flowed into foaming retort, and foaming agent is continuously added to by a certain percentage；Reaction time is 2-3
Minute, mixing speed is set as 180-220r/min, must treat flotation slurry.
6. a kind of coal ash separation method of coal chemical industry gasifier slag according to claim 5, it is characterised in that：
The mass ratio of boiler ash sediment and foaming agent is 1 ton in the initial action mixed slurry：4.8-5.3kg；
The dosing speed of the foaming agent is 10L per hour；
The foamer ingredient is terpenol, terpenic oil, and mass ratio is 1:0.8-1.1.
7. a kind of coal ash separation method of coal chemical industry gasifier slag according to claim 1, it is characterised in that：It is described floating
Select step, including one-level flotation step, secondary floatation step；
In the one-level flotation step,
Flotation slurry will be treated through microvesicle high-pressure jet column flotation, air enters flotation column, and form bubble, smart charcoal is attached to gas
Steep surrounding, flotation and go out, obtain in the first smart charcoal liquid material and primary election slag ash liquid material, the primary election slag ash liquid material, boiler ash sediment
Middle carbon content is less than 10%；
The flotation column, mesh size 2cm controls 0.12-0.20 millimeters of bubble diameter, 0.6-0.8 meters of depth of foam, air
Pressure 4-6bars.
8. a kind of coal ash separation method of coal chemical industry gasifier slag according to claim 7, it is characterised in that：Described one
In level flotation step, agent for capturing is proportionally added into primary election slag ash liquid material, is stirred 2-3 minutes, mixing speed 150-250r/
Min, obtains middle mixed slurry；
The primary election slag ash liquid material, the mass ratio of middle boiler ash sediment and agent for capturing is 1 ton：4.5-5.5kg；
Foaming agent is continuously added in middle mixed slurry according to grey slurry certain proportion to stir 2-3 minutes, mixing speed 150-250r/
Min, obtains secondary middle mixed slurry；
The mass ratio of the middle mixed slurry, boiler ash sediment and foaming agent is 1 ton：4.8-5.3kg.
9. a kind of coal ash separation method of coal chemical industry gasifier slag according to claim 8, it is characterised in that：Described two
In level flotation step：
Secondary middle mixed slurry is delivered to microvesicle high-pressure jet flotation column and carries out flotation, obtains flyash liquid material and the second smart charcoal
Liquid material；
The coal chemical industry gasification furnace is coal dust pressurized-gasification furnace or water-coal slurry furnace.
10. a kind of coal ash separation method of coal chemical industry gasifier slag according to claim 1, it is characterised in that：It is described
Coal chemical industry gasification furnace, is Tsing-Hua University's stove, east stove, section's woods stove, space flight stove or GSP；
The coal ash separation method, the coal after separation is used to do the raw material of activated carbon, the ash after separation is used for into molecular sieve, one
Level flyash.
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| CN110548749A (en) * | 2019-09-25 | 2019-12-10 | 中国矿业大学(北京) | Novel method for grading and quality-grading utilization of coal gasification ash |
| CN113732007A (en) * | 2021-07-30 | 2021-12-03 | 华东理工大学 | Recycling method of coal gasification fine slag |
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| CN101346193A (en) * | 2005-12-26 | 2009-01-14 | 三井造船株式会社 | Method for removal of unburned carbon contained fly ash |
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