CN109604046A - A kind of coal preparation method - Google Patents
A kind of coal preparation method Download PDFInfo
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- CN109604046A CN109604046A CN201811386128.0A CN201811386128A CN109604046A CN 109604046 A CN109604046 A CN 109604046A CN 201811386128 A CN201811386128 A CN 201811386128A CN 109604046 A CN109604046 A CN 109604046A
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- Prior art keywords
- coal
- parts
- flotation
- desulfurization
- once desulfurization
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- 239000003245 coal Substances 0.000 title claims abstract description 94
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000006477 desulfuration reaction Methods 0.000 claims abstract description 60
- 230000023556 desulfurization Effects 0.000 claims abstract description 41
- 239000002199 base oil Substances 0.000 claims abstract description 19
- 241000894006 Bacteria Species 0.000 claims abstract description 18
- 239000003818 cinder Substances 0.000 claims abstract description 18
- 238000002156 mixing Methods 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000005188 flotation Methods 0.000 claims abstract description 15
- 238000011084 recovery Methods 0.000 claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- 230000008569 process Effects 0.000 claims abstract description 9
- 239000008396 flotation agent Substances 0.000 claims abstract description 8
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 6
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 6
- 238000009412 basement excavation Methods 0.000 claims abstract description 6
- 239000001760 fusel oil Substances 0.000 claims abstract description 6
- 229910021389 graphene Inorganic materials 0.000 claims abstract description 6
- 239000004571 lime Substances 0.000 claims abstract description 6
- 230000004044 response Effects 0.000 claims abstract description 6
- 235000019795 sodium metasilicate Nutrition 0.000 claims abstract description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims abstract description 6
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 11
- 239000011734 sodium Substances 0.000 claims description 11
- 229910052708 sodium Inorganic materials 0.000 claims description 11
- 241001478240 Coccus Species 0.000 claims description 10
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 10
- 241000205098 Sulfolobus acidocaldarius Species 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- VBIIFPGSPJYLRR-UHFFFAOYSA-M Stearyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCCCC[N+](C)(C)C VBIIFPGSPJYLRR-UHFFFAOYSA-M 0.000 claims description 5
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 5
- 230000003009 desulfurizing effect Effects 0.000 claims description 5
- 239000002270 dispersing agent Substances 0.000 claims description 5
- 239000001963 growth medium Substances 0.000 claims description 5
- 150000001261 hydroxy acids Chemical class 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000001508 potassium citrate Substances 0.000 claims description 5
- 229960002635 potassium citrate Drugs 0.000 claims description 5
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims description 5
- 235000011082 potassium citrates Nutrition 0.000 claims description 5
- 230000035484 reaction time Effects 0.000 claims description 5
- 238000004064 recycling Methods 0.000 claims description 5
- 239000005864 Sulphur Substances 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims 1
- 229910052739 hydrogen Inorganic materials 0.000 claims 1
- 239000001257 hydrogen Substances 0.000 claims 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims 1
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims 1
- 239000000176 sodium gluconate Substances 0.000 claims 1
- 229940005574 sodium gluconate Drugs 0.000 claims 1
- 235000012207 sodium gluconate Nutrition 0.000 claims 1
- 239000011593 sulfur Substances 0.000 abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 abstract description 3
- RGHNJXZEOKUKBD-SQOUGZDYSA-N D-gluconic acid Chemical compound OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C(O)=O RGHNJXZEOKUKBD-SQOUGZDYSA-N 0.000 description 8
- RGHNJXZEOKUKBD-UHFFFAOYSA-N D-gluconic acid Natural products OCC(O)C(O)C(O)C(O)C(O)=O RGHNJXZEOKUKBD-UHFFFAOYSA-N 0.000 description 4
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 4
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 4
- 239000005708 Sodium hypochlorite Substances 0.000 description 4
- 125000003438 dodecyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 4
- 239000000174 gluconic acid Substances 0.000 description 4
- 235000012208 gluconic acid Nutrition 0.000 description 4
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 4
- MZSDGDXXBZSFTG-UHFFFAOYSA-M sodium;benzenesulfonate Chemical compound [Na+].[O-]S(=O)(=O)C1=CC=CC=C1 MZSDGDXXBZSFTG-UHFFFAOYSA-M 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002609 medium Substances 0.000 description 2
- 238000004939 coking Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 125000001741 organic sulfur group Chemical group 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/005—General arrangement of separating plant, e.g. flow sheets specially adapted for coal
-
- 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
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
-
- 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
- B03D1/001—Flotation agents
- B03D1/018—Mixtures of inorganic and organic compounds
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L9/00—Treating solid fuels to improve their combustion
-
- 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
- B03D2203/00—Specified materials treated by the flotation agents; Specified applications
- B03D2203/02—Ores
- B03D2203/04—Non-sulfide ores
- B03D2203/08—Coal ores, fly ash or soot
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/12—Regeneration of a solvent, catalyst, adsorbent or any other component used to treat or prepare a fuel
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
A kind of coal preparation method of the present invention belongs to Coal dressing technical field；Problem to be solved is to provide that a kind of sulfur content is low, the coal preparation method of cleaned coal high frequency zone；Used technical solution are as follows: coal blending, sorting and crushing: the coal of excavation sorts out raw coal by coal blending, sorting from dump；The raw coal sub-elected is ground into the coal cinder that granularity is less than 3cm；Once desulfurization: being put into primary first-order equation kettle for smashed coal cinder, bacterium solution be then added, and carries out once desulfurization using air stirring lixiviation process；Secondary desulfuration: the coal cinder after once desulfurization is sent directly into secondary response kettle, be added desulphurizer mixing carry out secondary desulfuration, be stirred continuously until whiteness do not continue to generate, complete desulphurization reaction；Flotation: the coal after secondary desulfuration is subjected to further flotation, flotation agent used is 100-150 parts of commercial recovery base oil, 30-50 parts of fusel oil, 3-7 parts of sodium metasilicate, 2-6 parts of graphene, 1-5 parts of lime.
Description
Technical field
A kind of coal preparation method of the present invention belongs to Coal dressing technical field.
Background technique
Coal resources in China is abundant, and other each provinces and regions are distributed in addition to Shanghai, but distributed pole is unbalanced.In Chinese north
Daxing'an Mountainrange-Taihang Mountain of side, the area between Helan Mountain, geographic range include that coal resources are greater than 100,000,000,000 tons or more
The Inner Mongol, Shanxi, Shaanxi, Ningxia, Gansu, the whole of 6 provinces and regions of Henan or big portion, are the ground of coal resources in China integrated distribution
Area, stock number account for 50% or so of national coal resources.
The process for meeting the cleaned coal of user quality requirement is sub-elected from raw coal.Coal for coking has one to ash content, sulphur content
Provisioning request, it is necessary to use the cleaned coal used Jing Guo washing.The lithofacies of coal form and the quantity of minerals in coal, type, property and
Distribution is all the factor for influencing the washability of coal.The common technique of coal preparation plant have jigging, dense medium cyclone, dense-medium shallow-tank,
Vibro-assisted jigging, flotation etc..
Summary of the invention
The invention overcomes the deficiencies of the prior art, and provides a kind of sulfur content is low, the coal separation of cleaned coal high frequency zone
Method.
In order to solve the above-mentioned technical problem, a kind of the technical solution adopted by the present invention are as follows: coal preparation method, it is characterised in that packet
Include following steps progress:
1) coal blending, sorting and crushing: the coal of excavation sorts out raw coal by coal blending, sorting from dump；By what is sub-elected
Raw coal is ground into the coal cinder that granularity is less than 3cm；
2) once desulfurization: being put into primary first-order equation kettle for smashed coal cinder, bacterium solution be then added, using air stirring lixiviation process into
Row once desulfurization；
3) secondary desulfuration: the coal cinder after once desulfurization is sent directly into secondary response kettle, and it is secondary that desulphurizer mixing progress is added
Desulfurization, be stirred continuously until whiteness do not continue to generate, complete desulphurization reaction；
4) flotation: the coal after secondary desulfuration is subjected to further flotation, flotation agent used is commercial recovery base oil 100-150
Part, 30-50 parts of fusel oil, 3-7 parts of sodium metasilicate, 2-6 parts of graphene, 1-5 parts of lime.
The commercial recovery base oil is the mixture of matter base oil and lighter body in recycling, volume ratio 0.1-
0.5:1-3。
The bacterium solution of the once desulfurization is the mixed-culture medium of sulfolobus acidocaldarius and prunosus red coccus, both bacterium solution
Volume ratio is 1:1, pH value 5.5；The reaction temperature of the once desulfurization is 36-40 DEG C, reaction time 5-6h.
The concentration of the sulfolobus acidocaldarius is 1.2 × 105-1.8×106A/mL.
The concentration of the prunosus red coccus are as follows: 1 × 105-1.5×106A/mL.
The desulfurizing agent of the secondary desulfuration is 20 parts of sodium hypochlorite, 8 parts of hydroxy acid sodium, 9 parts of potassium citrate, gluconic acid
7 parts of sodium, 11 parts of triethanolamine, 3 parts of aluminium chloride ferrum, 5 parts of sodium bicarbonate, 0.2 part of octadecyltrimethylammonium chloride, dodecyl
0.6 part of benzene sulfonic acid sodium salt, 0.3 part of dispersing agent.
The present invention has the advantages that compared with prior art.
1, the method that the present invention is combined by biological desulphurization and inorganic desulfurization, quickly, in inexpensive removing coal
Sulphur.Once desulfurization of the invention use biological desulfurization method, it is low for equipment requirements by the optimization of technique, and without by coal into
Row, which crushes, can also reach good desulfurization effect, enormously simplify desulfurization operations step, reduce manually, reduce costs；And
Bacterium solution is easy to get, and by culture, desulfurization degree is greatly improved, and organic sulfur desulfurization degree reaches 85% or more；Cooperate simultaneously
The secondary desulfuration step of inorganic sulfur removing, fast implements the removing of element sulphur in coal, and the inventive desulfurization time is short, high-efficient,
The pollution for reducing environment, improves the use value of coal.
2, the present invention is used as to catch using commercial recovery base oil selects agent, can efficiently use commercial recovery base oil, simultaneously
Matter base oil is mixed with lighter body in, and can improve one reduces cost, while also can satisfy the technique of flotation
It is required that.Coal flotation agent using when can be used as one-component add, avoid respectively addition the multi-pipelines such as collecting agent and foaming agent
Addition, simplifies process flow.Coal flotation agent has good flotation effect to different types of coal difference floatation process, improves essence
Coal yield reduces cleans ash, adaptable.
Specific embodiment
Embodiment 1
A kind of coal preparation method, it is characterised in that include the following steps progress:
1) coal blending, sorting and crushing: the coal of excavation sorts out raw coal by coal blending, sorting from dump；By what is sub-elected
Raw coal is ground into the coal cinder that granularity is less than 3cm；
2) once desulfurization: being put into primary first-order equation kettle for smashed coal cinder, bacterium solution be then added, using air stirring lixiviation process into
Row once desulfurization；
3) secondary desulfuration: the coal cinder after once desulfurization is sent directly into secondary response kettle, and it is secondary that desulphurizer mixing progress is added
Desulfurization, be stirred continuously until whiteness do not continue to generate, complete desulphurization reaction；
4) flotation: carrying out further flotation for the coal after secondary desulfuration, and flotation agent used is 150 parts of commercial recovery base oil,
50 parts of fusel oil, 7 parts of sodium metasilicate, 6 parts of graphene, 5 parts of lime.
The commercial recovery base oil be recycling in matter base oil and lighter body mixture, volume ratio 0.1:
3。
The bacterium solution of the once desulfurization is the mixed-culture medium of sulfolobus acidocaldarius and prunosus red coccus, both bacterium solution
Volume ratio is 1:1, pH value 5.5；The reaction temperature of the once desulfurization is 40 DEG C, reaction time 5h.
The concentration of the sulfolobus acidocaldarius is 1.2 × 105-1.8×106A/mL.
The concentration of the prunosus red coccus are as follows: 1 × 105-1.5×106A/mL.
The desulfurizing agent of the secondary desulfuration is 20 parts of sodium hypochlorite, 8 parts of hydroxy acid sodium, 9 parts of potassium citrate, gluconic acid
7 parts of sodium, 11 parts of triethanolamine, 3 parts of aluminium chloride ferrum, 5 parts of sodium bicarbonate, 0.2 part of octadecyltrimethylammonium chloride, dodecyl
0.6 part of benzene sulfonic acid sodium salt, 0.3 part of dispersing agent.
Embodiment 2
A kind of coal preparation method, it is characterised in that include the following steps progress:
1) coal blending, sorting and crushing: the coal of excavation sorts out raw coal by coal blending, sorting from dump；By what is sub-elected
Raw coal is ground into the coal cinder that granularity is less than 3cm；
2) once desulfurization: being put into primary first-order equation kettle for smashed coal cinder, bacterium solution be then added, using air stirring lixiviation process into
Row once desulfurization；
3) secondary desulfuration: the coal cinder after once desulfurization is sent directly into secondary response kettle, and it is secondary that desulphurizer mixing progress is added
Desulfurization, be stirred continuously until whiteness do not continue to generate, complete desulphurization reaction；
4) flotation: carrying out further flotation for the coal after secondary desulfuration, and flotation agent used is 100 parts of commercial recovery base oil,
30 parts of fusel oil, 3 parts of sodium metasilicate, 2 parts of graphene, 1 part of lime.
The commercial recovery base oil be recycling in matter base oil and lighter body mixture, volume ratio 0.5:
1。
The bacterium solution of the once desulfurization is the mixed-culture medium of sulfolobus acidocaldarius and prunosus red coccus, both bacterium solution
Volume ratio is 1:1, pH value 5.5；The reaction temperature of the once desulfurization is 36 DEG C, reaction time 6h.
The concentration of the sulfolobus acidocaldarius is 1.2 × 105-1.8×106A/mL.
The concentration of the prunosus red coccus are as follows: 1 × 105-1.5×106A/mL.
The desulfurizing agent of the secondary desulfuration is 20 parts of sodium hypochlorite, 8 parts of hydroxy acid sodium, 9 parts of potassium citrate, gluconic acid
7 parts of sodium, 11 parts of triethanolamine, 3 parts of aluminium chloride ferrum, 5 parts of sodium bicarbonate, 0.2 part of octadecyltrimethylammonium chloride, dodecyl
0.6 part of benzene sulfonic acid sodium salt, 0.3 part of dispersing agent.
Embodiment 3
A kind of coal preparation method, it is characterised in that include the following steps progress:
1) coal blending, sorting and crushing: the coal of excavation sorts out raw coal by coal blending, sorting from dump；By what is sub-elected
Raw coal is ground into the coal cinder that granularity is less than 3cm；
2) once desulfurization: being put into primary first-order equation kettle for smashed coal cinder, bacterium solution be then added, using air stirring lixiviation process into
Row once desulfurization；
3) secondary desulfuration: the coal cinder after once desulfurization is sent directly into secondary response kettle, and it is secondary that desulphurizer mixing progress is added
Desulfurization, be stirred continuously until whiteness do not continue to generate, complete desulphurization reaction；
4) flotation: carrying out further flotation for the coal after secondary desulfuration, and flotation agent used is 120 parts of commercial recovery base oil,
45 parts of fusel oil, 5 parts of sodium metasilicate, 5 parts of graphene, 2 parts of lime.
The commercial recovery base oil be recycling in matter base oil and lighter body mixture, volume ratio 0.3:
1.5。
The bacterium solution of the once desulfurization is the mixed-culture medium of sulfolobus acidocaldarius and prunosus red coccus, both bacterium solution
Volume ratio is 1:1, pH value 5.5；The reaction temperature of the once desulfurization is 38 DEG C, reaction time 5h.
The concentration of the sulfolobus acidocaldarius is 1.2 × 105-1.8×106A/mL.
The concentration of the prunosus red coccus are as follows: 1 × 105-1.5×106A/mL.
The desulfurizing agent of the secondary desulfuration is 20 parts of sodium hypochlorite, 8 parts of hydroxy acid sodium, 9 parts of potassium citrate, gluconic acid
7 parts of sodium, 11 parts of triethanolamine, 3 parts of aluminium chloride ferrum, 5 parts of sodium bicarbonate, 0.2 part of octadecyltrimethylammonium chloride, dodecyl
0.6 part of benzene sulfonic acid sodium salt, 0.3 part of dispersing agent.
Above embodiment is merely exemplary to illustrate the principle of the present invention and its effect, and is not intended to limit the present invention.For
Person skilled in the art all without departing from the spirit and scope of the present invention, modifies above-described embodiment or is improved.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by tool usually intellectual in all act technical fields
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (6)
1. a kind of coal preparation method, it is characterised in that include the following steps progress:
1) coal blending, sorting and crushing: the coal of excavation sorts out raw coal by coal blending, sorting from dump；By what is sub-elected
Raw coal is ground into the coal cinder that granularity is less than 3cm；
2) once desulfurization: being put into primary first-order equation kettle for smashed coal cinder, bacterium solution be then added, using air stirring lixiviation process into
Row once desulfurization；
3) secondary desulfuration: the coal cinder after once desulfurization is sent directly into secondary response kettle, and it is secondary that desulphurizer mixing progress is added
Desulfurization, be stirred continuously until whiteness do not continue to generate, complete desulphurization reaction；
4) flotation: the coal after secondary desulfuration is subjected to further flotation, flotation agent used is commercial recovery base oil 100-150
Part, 30-50 parts of fusel oil, 3-7 parts of sodium metasilicate, 2-6 parts of graphene, 1-5 parts of lime.
2. a kind of coal preparation method according to claim 1, it is characterised in that: the commercial recovery base oil is matter in recycling
The mixture of base oil and lighter body, volume ratio 0.1-0.5:1-3.
3. a kind of coal preparation method according to claim 1, it is characterised in that: the bacterium solution of the once desulfurization is the hot sulphur of acidophilus
Change the mixed-culture medium of leaf bacterium and prunosus red coccus, both bacterium solution volume ratio is 1:1, pH value 5.5；The once desulfurization it is anti-
Answering temperature is 36-40 DEG C, reaction time 5-6h.
4. a kind of coal preparation method according to claim 3, it is characterised in that: the concentration of the sulfolobus acidocaldarius is
1.2×105-1.8×106A/mL.
5. a kind of coal preparation method according to claim 3, it is characterised in that: the concentration of the prunosus red coccus are as follows: 1 ×
105-1.5×106A/mL.
6. a kind of coal preparation method according to claim 1, it is characterised in that: the desulfurizing agent of the secondary desulfuration is hypochlorous acid
20 parts of sodium, 8 parts of hydroxy acid sodium, 9 parts of potassium citrate, 7 parts of sodium gluconate, 11 parts of triethanolamine, 3 parts of aluminium chloride ferrum, carbonic acid
5 parts of hydrogen sodium, 0.2 part of octadecyltrimethylammonium chloride, 0.6 part of neopelex, 0.3 part of dispersing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386128.0A CN109604046A (en) | 2018-11-20 | 2018-11-20 | A kind of coal preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811386128.0A CN109604046A (en) | 2018-11-20 | 2018-11-20 | A kind of coal preparation method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112957901A (en) * | 2021-03-17 | 2021-06-15 | 辽宁工程技术大学 | Absorbent for removing coal seam hydrogen sulfide and coal seam sulfur elements and preparation method thereof |
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