CN111790307A - Integrated processing system and method for coal water slurry - Google Patents
Integrated processing system and method for coal water slurry Download PDFInfo
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- CN111790307A CN111790307A CN202010748502.8A CN202010748502A CN111790307A CN 111790307 A CN111790307 A CN 111790307A CN 202010748502 A CN202010748502 A CN 202010748502A CN 111790307 A CN111790307 A CN 111790307A
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- Prior art keywords
- coal
- slurry
- tank
- control valve
- mill
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- 239000003245 coal Substances 0.000 title claims abstract description 203
- 239000002002 slurry Substances 0.000 title claims abstract description 92
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 238000012545 processing Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 102
- 239000003250 coal slurry Substances 0.000 claims abstract description 51
- 238000003860 storage Methods 0.000 claims abstract description 41
- 239000000654 additive Substances 0.000 claims abstract description 40
- 230000000996 additive effect Effects 0.000 claims abstract description 38
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 37
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 37
- 239000004571 lime Substances 0.000 claims abstract description 37
- 238000005303 weighing Methods 0.000 claims abstract description 24
- 239000002245 particle Substances 0.000 claims abstract description 23
- 239000000843 powder Substances 0.000 claims abstract description 14
- 238000009826 distribution Methods 0.000 claims abstract description 7
- 238000003672 processing method Methods 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 40
- 238000002309 gasification Methods 0.000 claims description 16
- 239000000725 suspension Substances 0.000 claims description 11
- 239000007864 aqueous solution Substances 0.000 claims description 9
- 238000002360 preparation method Methods 0.000 claims description 9
- 238000012216 screening Methods 0.000 claims description 7
- 238000005192 partition Methods 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 claims description 2
- 230000010354 integration Effects 0.000 claims 1
- 239000011148 porous material Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000704 physical effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 12
- 238000007599 discharging Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000295 fuel oil Substances 0.000 description 3
- 229910017053 inorganic salt Inorganic materials 0.000 description 3
- 229920005552 sodium lignosulfonate Polymers 0.000 description 3
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/51—Methods thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/53—Mixing liquids with solids using driven stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/50—Mixing liquids with solids
- B01F23/59—Mixing systems, i.e. flow charts or diagrams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/70—Pre-treatment of the materials to be mixed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/70—Pre-treatment of the materials to be mixed
- B01F23/71—Grinding materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/70—Pre-treatment of the materials to be mixed
- B01F23/713—Sieving materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
- B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
- B01F33/83613—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by grinding or milling
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/48—Apparatus; Plants
- C10J3/50—Fuel charging devices
-
- 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
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
-
- 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
- C10L1/00—Liquid carbonaceous fuels
- C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
- C10L1/326—Coal-water suspensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/505—Mixing fuel and water or other fluids to obtain liquid fuel emulsions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0903—Feed preparation
- C10J2300/0906—Physical processes, e.g. shredding, comminuting, chopping, sorting
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0913—Carbonaceous raw material
- C10J2300/093—Coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0983—Additives
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/09—Details of the feed, e.g. feeding of spent catalyst, inert gas or halogens
- C10J2300/0983—Additives
- C10J2300/0996—Calcium-containing inorganic materials, e.g. lime
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- 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
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/12—Inorganic 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
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/12—Inorganic compounds
- C10L1/1233—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof
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- 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
- C10L1/00—Liquid carbonaceous fuels
- C10L1/10—Liquid carbonaceous fuels containing additives
- C10L1/14—Organic compounds
- C10L1/24—Organic compounds containing sulfur, selenium and/or tellurium
- C10L1/2431—Organic compounds containing sulfur, selenium and/or tellurium sulfur bond to oxygen, e.g. sulfones, sulfoxides
- C10L1/2437—Sulfonic acids; Derivatives thereof, e.g. sulfonamides, sulfosuccinic acid esters
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- 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
- C10L2290/24—Mixing, stirring of fuel components
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- 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
- C10L2290/28—Cutting, disintegrating, shredding or grinding
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Chemical & Material Sciences (AREA)
- Liquid Carbonaceous Fuels (AREA)
Abstract
The invention relates to a coal water slurry integrated processing system, wherein an additive pump is arranged on a pipeline between an additive tank and a control valve, a discharge port of a coal hopper is connected with a weighing feeder, a discharge port of the weighing feeder is connected to a second feed port of a coal mill through a pipeline, a sodium hydroxide pump is arranged on a pipeline between a sodium hydroxide storage tank and a third feed port of the coal mill, a discharge port of a lime storage hopper is connected with a lime feeding conveyor, a discharge port of the lime feeding conveyor and a fourth feed port of the coal mill are connected, and a discharge port of the coal mill is connected with a discharge tank of the coal mill. The invention also provides a coal water slurry integrated processing method. The invention has the following beneficial effects: in the process of preparing coal slurry, the coal quality characteristics and the coal powder particle size distribution are relatively fixed, the anti-settling capacity of the coal water slurry particles is better, and the uniform physical properties can be maintained in the processes of transporting and storing the coal slurry. The production capacity is obviously improved, and great economic benefits are brought.
Description
Technical Field
The invention relates to a coal water slurry integrated processing system and a coal water slurry integrated processing method, and belongs to the technical field of coal gasification.
Background
The coal water slurry is a coal-based fluid fuel, and is a slurry which is prepared by about 65 percent of coal, water and additives through a physical processing process and has certain particle size distribution, concentration and flowing property. Is adopted in the technical field of coal gasification. With the development of social economy, the international oil price has a rising trend, and the fuel oil resources are in shortage day by day. The coal water slurry is an ideal substitute of fuel oil, and the concentration and granularity of the coal water slurry directly influence the effect of the coal water slurry on replacing the fuel oil. The conventional pulping system and the existing coal water slurry production method have the problems of small coal slurry concentration improvement range, complex flow, poor operability, high energy consumption and the like.
Disclosure of Invention
According to the defects in the prior art, the technical problems to be solved by the invention are as follows: in order to solve one of the above problems, an integrated processing system and method for coal water slurry are provided.
The invention discloses a coal water slurry integrated processing system, which comprises a coal water slurry preparation system used in a coal water slurry preparation process, wherein the coal water slurry preparation system comprises a coal hopper, a weighing feeder, a sodium hydroxide storage tank, a lime storage hopper and a coal mill, a first feed port of the coal mill is connected with a first control valve, the first control valve is provided with a first flow port, a second flow port and a third flow port, the second flow port and the third flow port of the first control valve are respectively communicated with a water storage tank and an additive tank through pipelines, a water tank pump is arranged on the pipeline between the water storage tank and the first control valve, an additive pump is arranged on the pipeline between the additive tank and the control valve, a discharge port of the coal hopper is connected with the weighing feeder, a discharge port of the weighing feeder is connected to the second feed port of the coal mill through a pipeline, a sodium hydroxide pump is arranged on the pipeline between the sodium hydroxide storage tank and the third feed port of the coal mill, the lime feeding conveyor is connected to the discharge port of the lime storage hopper, the discharge port of the lime feeding conveyor and the fourth feed port of the coal mill are connected to the discharge port of the coal mill, a coal mill discharge chute is connected to the discharge port of the coal mill discharge chute, a low-pressure coal slurry pump is connected to the discharge port of the coal mill discharge chute, and the first control valve has two working states: in a first working state, the first flow passage opening, the second flow passage opening and the third flow passage opening are communicated; and in a second working state, the second flow passage opening is communicated with the first flow passage opening, and the third flow passage opening is closed.
Preferably, the system further comprises a second control valve, the second control valve is installed on a pipeline between the coal mill and the weighing feeder, the second control valve is provided with a first flow port, a second flow port and a third flow port, the first flow port of the second control valve is connected to the second flow port of the first control valve, the second flow port and the third flow port of the second control valve are respectively communicated with the coal mill and the weighing feeder through pipelines, and the second control valve has two working states: in a first working state, the second flow passage opening is communicated with the third flow passage opening, and the first flow passage opening is closed; and in a second working state, the first flow passage opening is communicated with the third flow passage opening, and the second flow passage opening is closed.
Preferably, the first control valve and the second control valve are T-shaped three-way ball valves.
Preferably, a coal inlet of the coal mill is provided with a connecting elbow pipe, and a coal outlet of the weighing feeder is communicated with an inlet of the connecting elbow pipe through a pipeline.
Preferably, the connecting bent pipe comprises a vertical pipe and an inclined pipe, the upper end and the lower end of the vertical pipe are respectively provided with a connecting flange A and a connecting flange B, the connecting flange A is connected with an upper sealing plate through a bolt, the connecting flange B is communicated with a feed inlet of the coal mill through a bolt, an included angle between the inclined pipe and the vertical pipe is set to be 40-60 degrees, the upper end of the inclined pipe is provided with a connecting flange C, the connecting flange C is communicated with a discharge port of a weighing feeder, the bottom end of the connecting flange C is connected to the outer wall of the vertical pipe, a notch A is formed in the inner side of the inclined pipe, a notch B is formed in the inner side of the vertical pipe, and the notch A and the notch B are communicated together. Thereby reducing the friction of the centrifugal force generated by the material in the elbow to the inner wall of the far end of the pipeline and reducing the abrasion degree of the pipe wall. The connecting flange A can be externally connected with water and air to correspondingly wash, so that the service life of the elbow is prolonged.
Preferably, the coal mill blown down tank includes the main tank body, the inside of the main tank body is provided with an inner baffle, the inner baffle divides the inner chamber of the main tank body into an upper chamber and a lower chamber, a bottom conveying vertical pipeline is arranged in the lower chamber, the top of the main tank body is communicated with the inner chamber of the upper chamber, a driving device is installed on the top plate of the main tank body, a power output shaft of the driving device is connected with a central shaft, the central shaft penetrates through the upper chamber and the bottom conveying vertical pipeline, stirring blades are arranged on the central shaft in the upper chamber, spiral conveying blades are arranged on the central shaft in the bottom conveying vertical pipeline, the upper portion of the side wall of the main tank body is provided with a feed inlet, and the bottom of the side wall of the bottom conveying vertical pipeline is connected with a bottom conveying horizontal pipeline. The driving device rotates forwards, slurry is homogenized and kept in a suspension state through the stirring action of the stirring blades, and the spiral conveying blades are reversely rotated to be in a non-working state. When the material is required to be fed to the next procedure, the driving device rotates reversely, and the spiral conveying blades play a role in conveying the materials.
Preferably, still include the coal gasifier system that the coal slurry gasification technology used, the coal gasifier system includes reciprocating sieve, coal slurry groove, high pressure coal slurry pump and coal gasifier, the discharge gate of low pressure coal slurry pump is connected on the feed inlet of reciprocating sieve, the reciprocating sieve passes through the pipeline and communicates with the coal slurry groove mutually, the coal slurry groove passes through the pipe connection on the feed inlet of coal gasifier, the high pressure coal slurry pump has on the pipeline between coal gasifier and the coal slurry groove.
Preferably, the structure of the coal slurry tank and the structure of the discharge tank of the coal mill are the same.
Preferably, 2-3 groups of stirring devices are arranged on the central shaft from top to bottom, each stirring device comprises three main stirring blades arranged at equal angles, each main stirring blade is of an arc-shaped structure, the central angle corresponding to each main stirring blade is 105 degrees and 112 degrees, and the tail end of each main stirring blade is hinged with an auxiliary stirring blade. The stirring effect is good.
The invention also discloses a coal water slurry integrated processing method, which comprises the following steps:
the method comprises the following steps of feeding gasified raw coal into a raw coal bin, crushing, vibrating, screening and deironing to obtain qualified coal powder, feeding the qualified coal powder into a coal hopper, and metering the qualified coal powder into a coal mill by a weighing feeder;
taking a sodium hydroxide aqueous solution as a pH value regulator, wherein the sodium hydroxide aqueous solution is from a sodium hydroxide storage tank, and the sodium hydroxide aqueous solution in the sodium hydroxide storage tank is metered by a sodium hydroxide pump and sent into a coal mill;
the water comes from the water storage tank, and the water in the water storage tank is metered into the coal mill by the water tank pump;
lime comes from the lime storage hopper, and the lime in the lime storage hopper is metered by the lime feeding conveyor and is sent into the coal grinding machine;
the additive comes from the additive tank, and the additive in the additive tank is metered into the coal mill by the additive pump;
the coal powder is co-ground with water, an additive, a pH value regulator and lime in a coal mill to prepare slurry, the required particle size distribution is achieved, and the concentration of the prepared slurry is 67-69%;
the slurry flowing out of the coal mill flows into a discharge chute of the coal mill, so that the slurry is homogenized and kept in a suspension state;
slurry in a discharge chute of the coal mill enters a vibrating screen through a low-pressure coal slurry pump, and large particles in the slurry are removed through screening;
removing large-particle slurry, flowing into a coal slurry tank, homogenizing the slurry, keeping the slurry in a suspension state, and supplying gas for gasification;
the slurry in the slurry tank is pumped into a coal gasification furnace through a high-pressure slurry pump and gasified.
Preferably, the driving device rotates forwards, the slurry is homogenized and kept in a suspension state through the stirring action of the stirring blades, and the spiral conveying blades rotate backwards to be in a non-working state; when the material is required to be fed to the next procedure, the driving device is reversely rotated, and the spiral conveying blade plays a role in conveying the material
Preferably, the coal water slurry additive comprises the following components: sodium lignosulfonate; sodium hydroxide; a metasilicate; an inorganic salt; an organobentonite.
Preferably, the coal water slurry additive comprises the following components in percentage by mass: 25 parts of sodium lignosulfonate; 8 parts of sodium hydroxide; 44 parts of metasilicate; 69 parts of inorganic salt; and 7 parts of organic bentonite.
Preferably, the coal water slurry comprises the following components in percentage by mass: 65-68% of coal, 33-35% of water, 1% of lime additive, 1% of additive and 0.1-0.3% of pH value regulator.
Compared with the prior art, the invention has the following beneficial effects:
the coal water slurry integrated processing system provided by the invention is characterized in that the first control valve has two working states: in a first working state, the first flow opening, the second flow opening and the third flow opening are communicated to complete the addition of water and additives; and in a second working state, the second runner opening is communicated with the first runner opening, the third runner opening is closed, only clear water is injected into the coal mill to clean the coal mill, the excess materials in the coal mill are washed and flushed by the water, smooth and clean discharging of the coal mill is ensured, and the situation of discharging blockage cannot occur when the coal mill is used again.
The water-coal-slurry integrated processing system provided by the invention has the following two working states that: in a first working state, the second flow opening is communicated with the third flow opening, and the first flow opening is closed to finish the conveying of materials; under the second operating condition, the first runner mouth communicates with the third runner mouth, the second runner mouth is closed, accomplishes the washing of coal pulverizer blown down tank, reciprocating sieve and slurry tank, once utilizes the water washing to wash the clout in a plurality of equipment in the system, guarantees that the system ejection of compact is unblocked, clean, can not appear the circumstances that the ejection of compact blockked up when using once more.
The water-coal-slurry integrated processing system has the advantages that the driving device rotates forwards, slurry is homogenized and kept in a suspension state under the stirring action of the stirring blades, and the spiral conveying blades rotate backwards to be in a non-working state. When the material is required to be fed to the next procedure, the driving device rotates reversely, and the spiral conveying blades play a role in conveying the materials. In the process of preparing coal slurry, the coal quality characteristics and the coal powder particle size distribution are relatively fixed, the anti-settling capacity of the coal water slurry particles is better, and the uniform physical properties can be maintained in the processes of transporting and storing the coal slurry.
According to the integrated processing system for the coal water slurry, the discharge hole of the low-pressure coal slurry pump is connected to the feed inlet of the vibrating screen, the vibrating screen is communicated with the coal slurry tank through a pipeline, the coal slurry tank is connected to the feed inlet of the coal gasifier through a pipeline, the high-pressure coal slurry pump is arranged on the pipeline between the coal gasifier and the coal slurry tank, slurry in the coal mill discharge tank enters the vibrating screen through the low-pressure coal slurry pump, large particles in the slurry are removed through screening, the maximum particle size of coal is not more than 300 mu m, the content of particles smaller than 200 meshes is not less than 75%, gaps among the large coal particles are filled with small particles, and spaces among the small particles are filled with smaller particles, so that a higher stacking effect can be generated among the coal particles, and stacking with the minimum gaps is formed.
The coal water slurry integrated processing method has the advantages that the coal slurry tank and the discharge tank of the coal mill have the same structure, the driving device rotates forwards, slurry is homogenized and kept in a suspension state under the stirring action of the stirring blades, and the spiral conveying blades rotate backwards to be in a non-working state. When feeding is needed in the next process, the driving device is reversed, the spiral conveying blade plays a role in conveying materials, the coal water slurry with high concentration, low viscosity, good stability, easiness in pumping and certain particle size distribution is pumped to the gasification furnace, the coal water slurry with fluidity is atomized through high-pressure pure oxygen, and reacts violently in the high-pressure gasification furnace to generate synthesis gas mainly containing hydrogen and carbon monoxide, so that the production capacity is obviously improved, and huge economic benefits are brought.
Drawings
In order to more clearly illustrate the detailed description of the invention or the technical solutions in the prior art, the drawings that are needed in the detailed description of the invention or the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the connection elbow;
FIG. 3 is a schematic structural view of a discharge chute of a coal pulverizer;
FIG. 4 is a schematic structural view of the main stirring blade and the auxiliary stirring blade.
In the figure: 1. the device comprises a coal hopper 2, a weighing feeder 3, a sodium hydroxide storage tank 4, a sodium hydroxide pump 5, a water storage tank 6, a water tank pump 7, an additive tank 8, an additive pump 9, a lime storage tank 10, a lime feeding conveyor 11, a coal mill 12, a coal mill discharge tank 12.1, a driving device 12.2, a main tank body 12.3, a bottom conveying vertical pipeline 12.4, a bottom conveying horizontal pipeline 12.5, a central shaft 12.6, stirring blades 12.7, spiral conveying blades 12.8, a feed inlet 12.9, an inner partition plate 13, a low-pressure coal slurry pump 14, a vibrating screen 15, a coal slurry tank 16, a high-pressure coal slurry pump 17, a coal gasification furnace 18, a first control valve 19, a second control valve 20, a connecting bent pipe 20.1, a vertical pipe 20.2, an inclined pipe 20.3, a connecting buffer hole channel 20.4, a connecting flange A20.5, a connecting flange B20.6, a connecting flange C20.7, a water tank, Upper closing plate 21, main stirring blade 22 and auxiliary stirring blade.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the present invention is further illustrated by the following specific examples, which are not intended to limit the scope of the invention, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Examples
As shown in fig. 1-4, the integrated processing and treating system for coal water slurry comprises a coal water slurry preparation system used in a coal water slurry preparation process, the coal water slurry preparation system comprises a coal hopper 1, a weighing feeder 2, a sodium hydroxide storage tank 3, a lime storage tank 9 and a coal mill 11, a first control valve 18 is connected to a first feed port of the coal mill 11, the first control valve 18 has a first flow port, a second flow port and a third flow port, the second flow port and the third flow port of the first control valve 18 are respectively communicated with a water storage tank 5 and an additive tank 7 through pipelines, a water tank pump 6 is installed on the pipeline between the water storage tank 5 and the first control valve 18, an additive pump 8 is installed on the pipeline between the additive tank 7 and the control valve, the weighing feeder 2 is connected to a discharge port of the coal hopper 1, and the discharge port of the weighing feeder 2 is connected to a second feed port of the coal mill 11 through a pipeline, the sodium hydroxide pump 4 is installed on a pipeline between the sodium hydroxide storage tank 3 and a third feeding port of the coal mill 11, a lime feeding conveyor 10 is connected to a discharging port of the lime storage hopper 9, a discharging port of the lime feeding conveyor 10 and a fourth feeding port of the coal mill 11 are connected to a discharging port of the coal mill 11, a coal mill discharging groove 12 is connected to a discharging port of the coal mill discharging groove 12, a low-pressure coal slurry pump 13 is connected to a discharging port of the coal mill discharging groove 12, and the first control valve 18 has two working states: in a first working state, the first flow passage opening, the second flow passage opening and the third flow passage opening are communicated; and in a second working state, the second flow passage opening is communicated with the first flow passage opening, and the third flow passage opening is closed.
In this embodiment, the second control valve 19 is further included, the second control valve 19 is installed on a pipeline between the coal mill 11 and the weigh feeder 2, the second control valve 19 has a first flow port, a second flow port and a third flow port, the first flow port of the second control valve 19 is connected to the second flow port of the first control valve 18, the second flow port and the third flow port of the second control valve 19 are respectively communicated with the coal mill 11 and the weigh feeder 2 through pipelines, and the second control valve 19 has two working states: in a first working state, the second flow passage opening is communicated with the third flow passage opening, and the first flow passage opening is closed; in a second working state, the first flow passage opening is communicated with the third flow passage opening, and the second flow passage opening is closed; the first control valve 18 and the second control valve 19 are T-shaped three-way ball valves; a coal inlet of the coal mill 11 is provided with a connecting elbow pipe 20, and a coal outlet of the weighing feeder 2 is communicated with an inlet of the connecting elbow pipe 20 through a pipeline; the connecting bent pipe 20 comprises a vertical pipe 20.1 and an inclined pipe 20.2, the upper end and the lower end of the vertical pipe 20.1 are respectively provided with a connecting flange A20.4 and a connecting flange B20.5, the connecting flange A20.4 is connected with an upper sealing plate 20.7 through a bolt, the connecting flange B20.5 is communicated with a feed inlet of the coal pulverizer 11 through a bolt, an included angle between the inclined pipe 20.2 and the vertical pipe 20.1 is set to be 40-60 degrees, the upper end of the inclined pipe 20.2 is provided with a connecting flange C20.6, the connecting flange C20.6 is communicated with a discharge outlet of the weighing device 2, the bottom end of the connecting flange C20.6 is connected to the outer wall of the vertical pipe 20.1, the inner side of the inclined pipe 20.2 is provided with a notch A, the inner side of the vertical pipe 20.1 is provided with a notch B, and the notch A and the notch B are communicated together through a; the coal mill discharge chute 12 comprises a main tank body 12.2, an inner partition plate 12.9 is arranged inside the main tank body 12.2, the inner baffle 12.9 divides the inner cavity of the main tank body 12.2 into an upper cavity and a lower cavity, a bottom conveying vertical pipeline 12.3 is arranged in the lower cavity, the top end of the main tank body 12.2 is communicated with the inner cavity of the upper cavity, a driving device 12.1 is arranged on the top plate of the main tank body 12.2, a power output shaft of the driving device 12.1 is in power connection with a central shaft 12.5, the central shaft 12.5 penetrates through the upper cavity and the bottom conveying vertical pipeline 12.3, the central shaft 12.5 in the upper cavity is provided with stirring blades 12.6, a central shaft 12.5 in the bottom conveying vertical pipeline 12.3 is provided with a spiral conveying blade 12.7, a feeding hole 12.8 is formed in the upper portion of the side wall of the main tank body 12.2, and a bottom conveying horizontal pipeline 12.4 is connected to the bottom of the side wall of the bottom conveying vertical pipeline 12.3; the coal gasification furnace system comprises a vibrating screen 14, a coal slurry groove 15, a high-pressure coal slurry pump 16 and a coal gasification furnace 17, wherein a discharge hole of the low-pressure coal slurry pump 13 is connected to a feed hole of the vibrating screen 14, the vibrating screen 14 is communicated with the coal slurry groove 15 through a pipeline, the coal slurry groove 15 is connected to a feed hole of the coal gasification furnace 17 through a pipeline, and the high-pressure coal slurry pump 16 is arranged on the pipeline between the coal gasification furnace 17 and the coal slurry groove 15; the structure of the coal slurry tank 15 is the same as that of the coal mill discharge tank 12; 2-3 groups of stirring devices are arranged on the central shaft 12.5 from top to bottom, each stirring device comprises three main stirring blades 21 which are arranged at equal angles, each main stirring blade 21 is of an arc-shaped structure, the central angle corresponding to each main stirring blade 21 is 105-112 degrees, and the tail end of each main stirring blade 21 is hinged with an auxiliary stirring blade 22.
The embodiment also discloses a coal water slurry integrated processing system, which comprises the following steps:
the method comprises the following steps of firstly feeding gasified raw material coal into a raw coal bin, crushing, vibrating, screening and deironing to obtain qualified coal powder, feeding the qualified coal powder into a coal hopper 1, and metering and feeding the qualified coal powder into a coal mill 11 through a weighing feeder 2;
taking a sodium hydroxide aqueous solution as a pH value regulator, wherein the sodium hydroxide aqueous solution is from a sodium hydroxide storage tank 3, and the sodium hydroxide aqueous solution in the sodium hydroxide storage tank 3 is metered into a coal mill 11 through a sodium hydroxide pump 4;
the water comes from the water storage tank 5, and the water in the water storage tank 5 is metered into the coal mill 11 through the water tank pump 6;
lime comes from the lime storage hopper 9, and the lime in the lime storage hopper 9 is metered into a coal mill 11 through a lime feeding conveyor 10;
the additive is sourced from an additive tank 7, and the additive in the additive tank 7 is metered into a coal mill 11 through an additive pump 8;
the coal powder is co-ground with water, an additive, a pH value regulator and lime in a coal mill 11 to prepare slurry, the required particle size distribution is achieved, and the concentration of the prepared slurry is 67-69%;
the slurry flowing out of the coal mill 11 flows into a coal mill discharge chute 12, so that the slurry is homogenized and kept in a suspension state;
slurry in a discharge chute 12 of the coal mill enters a vibrating screen 14 through a low-pressure coal slurry pump 13, and large particles in the slurry are removed through screening;
removing large-particle slurry, flowing into the slurry tank 15 to homogenize the slurry and keep the slurry in a suspension state for gasification;
the slurry in the slurry tank 15 is pumped into a coal gasifier 17 by a high-pressure slurry pump 16 and gasified.
In the embodiment, the driving device rotates forwards, slurry is homogenized and kept in a suspension state under the stirring action of the stirring blades, and the spiral conveying blades rotate backwards to be in a non-working state; when the materials need to be fed to the next procedure, the driving device rotates reversely, and the spiral conveying blade plays a role in conveying the materials; the coal water slurry additive comprises the following components in percentage by mass: 25 parts of sodium lignosulfonate; 8 parts of sodium hydroxide; 44 parts of metasilicate; 69 parts of inorganic salt; and 7 parts of organic bentonite. The coal water slurry comprises the following components in percentage by mass: 65-68% of coal, 33-35% of water, 1% of lime additive, 1% of additive and 0.1-0.3% of pH value regulator.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. Coal slurry integration processing system, its characterized in that: the coal water slurry preparation system comprises a coal water slurry preparation process, the coal water slurry preparation system comprises a coal hopper (1), a weighing feeder (2), a sodium hydroxide storage tank (3), a lime storage hopper (9) and a coal mill (11), a first control valve (18) is connected to a first feed inlet of the coal mill (11), the first control valve (18) is provided with a first flow passage, a second flow passage and a third flow passage, the second flow passage and the third flow passage of the first control valve (18) are respectively communicated with a water storage tank (5) and an additive tank (7) through pipelines, a water tank pump (6) is installed on a pipeline between the water storage tank (5) and the first control valve (18), an additive pump (8) is installed on a pipeline between the additive tank (7) and the control valve, the weighing feeder (2) is connected to a discharge port of the coal hopper (1), weigh on the discharge gate of dispenser (2) passes through the second feed inlet of pipe connection to coal pulverizer (11), install sodium hydroxide pump (4) on the pipeline between sodium hydroxide storage tank (3) and coal pulverizer (11) third feed inlet, be connected with lime feeding conveyor (10) on the discharge gate of lime storage hopper (9), the discharge gate of lime feeding conveyor (10) and the fourth feed inlet of coal pulverizer (11), be connected with coal pulverizer blown down tank (12) on the discharge gate of coal pulverizer (11), be connected with low pressure coal stuff pump (13) on the discharge gate of coal pulverizer blown down tank (12), first control valve (18) to two operating condition have: in a first working state, the first flow passage opening, the second flow passage opening and the third flow passage opening are communicated; and in a second working state, the second flow passage opening is communicated with the first flow passage opening, and the third flow passage opening is closed.
2. The integrated processing and treating system for coal water slurry as claimed in claim 1, wherein: the coal mill further comprises a second control valve (19), the second control valve (19) is installed on a pipeline between the coal mill (11) and the weighing feeder (2), the second control valve (19) is provided with a first flow port, a second flow port and a third flow port, the first flow port of the second control valve (19) is connected to the second flow port of the first control valve (18), the second flow port and the third flow port of the second control valve (19) are respectively communicated with the coal mill (11) and the weighing feeder (2) through pipelines, the second control valve (19) has two working states: in a first working state, the second flow passage opening is communicated with the third flow passage opening, and the first flow passage opening is closed; and in a second working state, the first flow passage opening is communicated with the third flow passage opening, and the second flow passage opening is closed.
3. The integrated processing and treating system for coal water slurry as claimed in claim 2, wherein: the first control valve (18) and the second control valve (19) are T-shaped three-way ball valves.
4. The integrated processing and treating system for coal water slurry as claimed in claim 3, wherein: a coal inlet of the coal mill (11) is provided with a connecting bent pipe (20), and a coal outlet of the weighing feeder (2) is communicated with an inlet of the connecting bent pipe (20) through a pipeline.
5. The integrated processing and treating system for coal water slurry as claimed in claim 4, wherein: the connecting elbow (20) comprises a vertical pipe (20.1) and an inclined pipe (20.2), the upper end and the lower end of the vertical pipe (20.1) are respectively provided with a connecting flange A (20.4) and a connecting flange B (20.5), the connecting flange A (20.4) is connected with an upper sealing plate (20.7) through a bolt, the connecting flange B (20.5) is communicated with a feed inlet of the coal mill (11) through bolts, the included angle between the inclined pipe (20.2) and the vertical pipe (20.1) is set to be 40-60 degrees, the upper end of the inclined pipe (20.2) is provided with a connecting flange C (20.6), the connecting flange C (20.6) is communicated with a discharge hole of the weighing feeder (2), the bottom end of the connecting flange C (20.6) is connected to the outer wall of the vertical pipe (20.1), a notch A is formed in the inner side of the inclined pipe (20.2), a notch B is formed in the inner side of the vertical pipe (20.1), and the notch A and the notch B are communicated together through a connecting buffer pore passage (20.3).
6. The integrated processing and treating system for coal water slurry as claimed in claim 5, wherein: the coal mill discharge chute (12) comprises a main tank body (12.2), an inner partition plate (12.9) is arranged inside the main tank body (12.2), the inner cavity of the main tank body (12.2) is divided into an upper cavity and a lower cavity by the inner partition plate (12.9), a bottom conveying vertical pipeline (12.3) is arranged in the lower cavity, the top end of the main tank body (12.2) is communicated with the inner cavity of the upper cavity, a driving device (12.1) is installed on a top plate of the main tank body (12.2), a power output shaft of the driving device (12.1) is in power connection with a central shaft (12.5), the central shaft (12.5) penetrates through the upper cavity and the bottom conveying vertical pipeline (12.3), a stirring blade (12.6) is arranged on the central shaft (12.5) in the upper cavity, a spiral conveying blade (12.7) is arranged on the central shaft (12.5) in the bottom conveying vertical pipeline (12.3), and a feed inlet (12.8) is arranged on the upper part of the side wall of the main tank body (12.2, the bottom of the side wall of the bottom conveying vertical pipeline (12.3) is connected with a bottom conveying horizontal pipeline (12.4).
7. The integrated processing and treating system for coal water slurry as claimed in claim 6, wherein: still include the coal gasifier system that coal slurry gasification technology used, the coal gasifier system includes reciprocating sieve (14), coal slurry groove (15), high pressure coal slurry pump (16) and coal gasifier (17), the discharge gate of low pressure coal slurry pump (13) is connected on the feed inlet of reciprocating sieve (14), reciprocating sieve (14) are linked together through pipeline and coal slurry groove (15), coal slurry groove (15) are through the pipe connection on the feed inlet of coal gasifier (17), high pressure coal slurry pump (16) have on the pipeline between coal gasifier (17) and coal slurry groove (15).
8. The integrated processing and treating system for coal water slurry as claimed in claim 7, wherein: the coal slurry tank (15) and the coal mill discharge tank (12) have the same structure.
9. The integrated processing and treating system for coal water slurry as claimed in claim 8, wherein: 2-3 groups of stirring devices are arranged on the central shaft (12.5) from top to bottom, each stirring device comprises three main stirring blades (21) which are arranged at equal angles, each main stirring blade (21) is of an arc-shaped structure, the central angle corresponding to each main stirring blade (21) is 105 degrees and 112 degrees, and the tail end of each main stirring blade (21) is hinged with an auxiliary stirring blade (22).
10. The integrated processing method of the coal water slurry is characterized in that: the method comprises the following steps:
the method comprises the following steps of firstly feeding gasified raw material coal into a raw coal bin, crushing, vibrating, screening and deironing to obtain qualified coal powder, feeding the qualified coal powder into a coal hopper (1), and then metering and feeding the qualified coal powder into a coal mill (11) through a weighing feeder (2);
taking a sodium hydroxide aqueous solution as a PH value regulator, wherein the sodium hydroxide aqueous solution is from a sodium hydroxide storage tank (3), and the sodium hydroxide aqueous solution in the sodium hydroxide storage tank (3) is metered into a coal mill (11) through a sodium hydroxide pump (4);
the water comes from the water storage tank (5), and the water in the water storage tank (5) is metered by the water tank pump (6) and is sent into the coal mill (11);
lime comes from the lime storage hopper (9), and the lime in the lime storage hopper (9) is metered into a coal mill (11) through a lime feeding conveyor (10);
the additive is sourced from an additive tank (7), and the additive in the additive tank (7) is metered into a coal mill (11) through an additive pump (8);
the coal powder is co-ground with water, an additive, a PH value regulator and lime in a coal mill (11) to prepare slurry, the required particle size distribution is achieved, and the concentration of the prepared slurry is 67-69%;
the slurry flowing out of the coal mill (11) flows into a discharge chute (12) of the coal mill, so that the slurry is homogenized and kept in a suspension state;
slurry in a discharge chute (12) of the coal mill enters a vibrating screen (14) through a low-pressure coal slurry pump (13), and large particles in the slurry are removed through screening;
removing large-particle slurry, flowing into a coal slurry tank (15), homogenizing the slurry, keeping the slurry in a suspension state, and supplying gas for gasification;
the slurry in the slurry tank (15) is pumped into a coal gasification furnace (17) through a high-pressure slurry pump (16) to be gasified.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114686272A (en) * | 2020-12-27 | 2022-07-01 | 新疆宜化化工有限公司 | Compounding agent for improving coal ash melting point in gasification process and mixing process |
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| CN204824770U (en) * | 2015-03-18 | 2015-12-02 | 广东龙正节能环保科技有限公司 | Coal slurry preparation system |
| CN207237831U (en) * | 2017-08-31 | 2018-04-17 | 四川也好食品有限公司 | A kind of blender of convenient discharging |
| CN208494429U (en) * | 2018-04-28 | 2019-02-15 | 中蓝连海设计研究院有限公司 | A kind of wear-resisting mine-feeding equipment |
| CN111036127A (en) * | 2019-12-31 | 2020-04-21 | 郭娟 | Poultry is bred and uses fodder agitating unit |
| CN111282666A (en) * | 2020-03-30 | 2020-06-16 | 株洲长江硬质合金设备有限公司 | Wet grinder |
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| CN114686272A (en) * | 2020-12-27 | 2022-07-01 | 新疆宜化化工有限公司 | Compounding agent for improving coal ash melting point in gasification process and mixing process |
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Effective date of registration: 20211028 Address after: 553000 north of Hongqiao Road and west of Shiqiao Third Road, Hongqiao new area, Liupanshui City, Guizhou Province Applicant after: GUIZHOU PROVINCE COAL PRODUCTS QUALITY SUPERVISION AND INSPECTION INSTITUTE Address before: 553000 No.58, Hongqiao Middle Road, Hongqiao New District, Liupanshui City, Guizhou Province Applicant before: Su Qian |
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