CN109251773A - A kind of coal and semicoke are the method that raw material composite waste prepares water-coal-slurry - Google Patents
A kind of coal and semicoke are the method that raw material composite waste prepares water-coal-slurry Download PDFInfo
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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
- C10L1/32—Liquid carbonaceous fuels consisting of coal-oil suspensions or aqueous emulsions or oil emulsions
- C10L1/326—Coal-water suspensions
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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
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- 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
- C10L1/1216—Inorganic compounds metal compounds, e.g. hydrides, carbides
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- 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
- C10L1/125—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof water
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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
- C10L1/1266—Inorganic compounds nitrogen containing compounds, (e.g. NH3)
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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
- C10L1/22—Organic compounds containing nitrogen
- C10L1/234—Macromolecular compounds
- C10L1/236—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds derivatives thereof
- C10L1/2364—Macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds derivatives thereof homo- or copolymers derived from unsaturated compounds containing amide and/or imide groups
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- 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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- 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
- C10L2290/54—Specific separation steps for separating fractions, components or impurities during preparation or upgrading of a fuel
- C10L2290/547—Filtration for separating fractions, components or impurities during preparation or upgrading of a fuel
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Abstract
It is the method that raw material composite waste prepares water-coal-slurry the invention discloses a kind of coal and semicoke, comprising: be crushed using coal and semicoke as raw material；Broken raw material is mixed with the waste water that gas purification process generates, then carries out high concentration ore grinding through coal pulverizer with water, additive, lime stone and ammonium hydroxide, and the water coal centrotheca with certain solid size distribution is made；Water-coal-slurry is obtained after water coal centrotheca slurry is filtered.The method that the present invention provides; pass through COAL-WATER SLURRY TECHNOLOGY; it can solve problem existing for pyrolysis of coal sub-prime classified utilization process; the waste water that the 6mm that will be difficult to be utilized coal below and semicoke and reluctant gas purification process generate is as raw material; the prepared water-coal-slurry for being suitable for gasification; to improve raw material availability, protection environment, save cost, the prior art is solved the problems, such as.
Description
Technical field
The invention belongs to clean coal technology field, it is related to one kind using coal and semicoke as raw material, while mixes a small amount of waste water system
The method of standby water-coal-slurry.
Background technique
China's oil starvation, few gas, rich coal energy resource structure feature be doomed AND ENERGY RESOURCES CONSUMPTION IN CHINA will be for a long time based on coal.Compared to
Present extensive single coal utilization mode, pyrolysis of coal sub-prime classified utilization technology improve the comprehensive energy efficiency of coal utilization.Outside
Heating revolving furnace Coal at Low Temperature retorting technique is the advanced technology in pyrolysis of coal sub-prime classified utilization technology scope.External-heating revolving
It is the fine coal of 6~30mm as raw material, cost of material that furnace Coal at Low Temperature retorting technique, which uses conventional method to be difficult to the partial size applied,
It is low, utilization rate of the coal as industrial chemicals is improved, the semicoke of production uses Dry Quenching, gas phase pollution do not generated, to environment
It is more friendly.But in this production process, still there is 6mm coal dust below that can not utilize, there is a small amount of 6mm or less in the semicoke of production
Coke powder be difficult to efficiently use.The way taken at present is to send boiler combustion after concentrating 6mm coal dust below and coke powder, economical
Benefit is low.Simultaneously because the waste water that gas purification generates is not used in quenching, although avoiding wet quenching institute using Dry Quenching
The gas phase pollution of generation, but fail to reach wastewater zero discharge, and gas purification process produces during pyrolysis of coal sub-prime classified utilization
Raw waste water is because complicated component is difficult to purified treatment, and not only processing cost is high, will cause environmental pollution toward contact.
Water-coal-slurry refers to the coal containing 60%~70%, 29%~39% water, and about 1% additive obtained one
Kind coarse dispersion system.It is small as the large-scale gasification technology environmental pollution of raw material using water-coal-slurry, gasify at low cost, and there is synthesis gas
Middle H2/CO ratio is high, and the advantage of industrial application maturation is used widely.Currently, as the raw material for commercially producing water-coal-slurry
The mainly higher bituminous coal of degree of metamorphism, coal obtain optimal grain size distribution by grinding, and chemical addition agent, which is added, to be made
Water-coal-slurry of the concentration 70% or more.
By COAL-WATER SLURRY TECHNOLOGY, 6mm coal below that the present invention will be difficult to be utilized during pyrolysis of coal sub-prime classified utilization
The difficult waste water that powder and semi-coke powder and gas purification process generate is used to prepare water-coal-slurry, can solve pyrolysis of coal sub-prime
Problem existing for classified utilization process.Prepared water-coal-slurry reaches GB/T 31426-2015 gasified coal water slurry II grade standard.
Summary of the invention
It is raw material the purpose of the present invention is to provide a kind of coal and semicoke to solve drawbacks described above existing in the prior art
The method that composite waste prepares water-coal-slurry, this method blends coal with semicoke by a certain percentage, while mixed gas cleaning procedure
The waste water of generation, then the method with water, additive, lime stone and ammonium hydroxide by certain mass than water-coal-slurry made from being ground,
Its technical process is simple, and water-coal-slurry slurry better performances are made, efficiently solve problem of the prior art.Specifically, this hair
Bright realized by following technical proposals:
A kind of method of the blend composite waste of coal and semicoke preparation water-coal-slurry, comprising the following steps:
1) blending is broken: using coal and semicoke as raw material, press (0.2~5): 1 mass ratio is added crusher and is crushed, and obtains
Broken raw material；
2) mixed grinding: the waste water that broken raw material and gas purification process generate is pressed into (62~70): 1 mass mixing
Mixture is obtained, then mixture and water, additive, lime stone and ammonium hydroxide are pressed into (63~71): (20~33): 1:(2~10): (1~
10) coal pulverizer is added in mass ratio, and ore grinding is carried out in coal pulverizer, and the water coal centrotheca with solid size distribution is made；
3) filter pulp: water-coal-slurry is obtained after water coal centrotheca slurry is filtered.
For above-mentioned technical proposal, there are also further preferred schemes by the present invention:
Preferably, in step 1), the coal and semicoke are the partial size 6mm screened out during pyrolysis of coal sub-prime classified utilization
The coal and semicoke below for being difficult to processing and utilization.
Preferably, the low-disintegration coals such as the coal selection lignite, jet coal.
Preferably, the semicoke is that coal is heated to 350 DEG C~650 DEG C pyrolysis, 1~2 hour gains.
Preferably, in step 2), the waste water refers to the waste water of gas purification generation during pyrolysis of coal sub-prime classified utilization,
Its characteristic index is petroleum content >=2500mg/L, phenol content >=2300mg/L.
Preferably, in step 2), the additive is the compound of sodium lignin sulfonate and polyacrylamide, and mass ratio is
Sodium lignin sulfonate: polyacrylamide=(0.2~5): 1.
Preferably, in the step 2), solid granularity is distributed as solid grain size at 0.7 μm~500 μm.
Preferably, the water coal slurry concentration obtained is not less than 60%, and ash content is not more than 9.35%, and apparent viscosity is not more than
1095mPas, granularity are not more than 500 μm, and coal ash melting property flowing temperature is not more than 1300 DEG C, and chlorinity is not more than 0.05%,
Arsenic is not more than 15 μ g/g, and mercury is not more than 0.07 μ g/g.
The present invention has the advantages that due to taking above technical scheme
(1) benefit is difficult to using the partial size screened out in pyrolysis of coal sub-prime classified utilization technique because of the raw material of water-coal-slurry processed
6mm coal below and semicoke, so that raw material availability is high, reaches product maximizing the benefits, industrial chain extension enhances coal
The economy of chemical company.
(2) processing of waste water is generated because removing gas purification process during pyrolysis of coal sub-prime classified utilization from, it not only can be with
Cost, protection environment are saved, water coal slurry concentration can also be improved.In pyrolysis of coal sub-prime classified utilization technique, gas purification institute
The waste water of generation can be mixed with coal and semicoke after for slurrying, reach wastewater zero discharge, save wastewater treatment expense, at the same by
The effect of bipolarity group, improves water coal slurry concentration in Petroleum Wastewater, phenols.
To sum up, the water coal slurry concentration obtained using this law is 60% or more, and mobility is preferable, and stability is preferable, is suitble to gas
Change, improves the utilization rate of raw material；Meanwhile using what is generated in pyrolysis of coal sub-prime classified utilization technical process to give up when slurrying
Water reduces wastewater treatment capacity, saves cost, protection environment, and improve water coal slurry concentration.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, not
Inappropriate limitation of the present invention is constituted, in the accompanying drawings:
Fig. 1 is process flow chart of the invention.
Specific embodiment
Below in conjunction with attached drawing and specific embodiment, the present invention will be described in detail, herein illustrative examples of the invention
And explanation is used to explain the present invention, but not as a limitation of the invention.
As shown in Figure 1, difference is given below, and examples illustrate the present invention for the method for the present invention process.
Embodiment 1
The implementation case is used to illustrate a kind of coal and semicoke is the method that raw material composite waste prepares water-coal-slurry.
The coal that this example is selected is 6mm or less the lignite in the Xinjiang area Nao Maohu, and the semicoke of selection is this lignite 350
2 hours resulting 6mm or less semicokes are pyrolyzed at DEG C.Feedstock analysis index is as follows:
- 1 lignite analysis indexes of table
- 2 semicoke analysis indexes of table
Lignite and semicoke are blended according to mass ratio 12:52 (0.23:1).Blend addition crusher is carried out brokenly
After broken, the waste water generated with gas purification process is added in coal pulverizer by the mass ratio of 64:1, and wet process high concentration mill is selected in slurrying
Mine pulping process.
Tailing water analysis index see the table below:
- 3 tailing water analysis index of table
According still further to mixture and water, additive (for sodium lignin sulfonate: polyacrylamide=1:1), lime stone and ammonium hydroxide
Mass ratio is that the ratio of 65:30:1:2:1 is ground into the water-coal-slurry with certain particle size distribution.The water coal slurry concentration exists
60% or so, mobility is preferable, and stability is preferable, can be used for coal slurry gasifier.
Gained water-coal-slurry analysis indexes see the table below, and provide without using the made water-coal-slurry analysis indexes of waste water as a comparison
Example.
- 4 water-coal-slurry analysis indexes of table
Embodiment 2
The coal that this example is selected is the jet coal of North Shaanxi, and the semicoke of selection is that this jet coal is pyrolyzed 1 at 650 DEG C
Hour resulting semicoke.Feedstock analysis index is as follows:
- 5 jet coal analysis indexes of table
- 6 semicoke analysis indexes of table
| Serial number | Test item | Unit | Data |
| 1 | Moisture Mt | % | 2 |
| 2 | Ash content Ad | % | 6.25 |
| 3 | Volatile matter Vd | % | 12 |
| 4 | Heating quantity of bomb cylinder (Qb, ad) | MJ/kg | 29 |
| 5 | Sulphur ST, d | % | 0.21 |
| 6 | Fixed carbon FCad | % | 85 |
Jet coal and semicoke are blended according to mass ratio 31:31 (1:1).Blend addition crusher is crushed
Afterwards, the waste water generated with gas purification process is added in coal pulverizer by the mass ratio of 62:1, and wet process high concentration ore grinding is selected in slurrying
Pulping process.Tailing water analysis index see the table below:
- 7 tailing water analysis index of table
According still further to mixture and water, additive (for sodium lignin sulfonate: polyacrylamide=1:1), lime stone and ammonium hydroxide
Mass ratio is that the ratio of 63:20:1:10:10 is ground into the water-coal-slurry with certain particle size distribution.The water coal slurry concentration exists
60% or so, mobility is preferable, and stability is preferable, can be used for coal slurry gasifier.Gained water-coal-slurry analysis indexes see the table below, and
It provides without using the made water-coal-slurry analysis indexes of waste water as a comparison case.
- 8 water-coal-slurry analysis indexes of table
Embodiment 3
The coal that this example is selected is the lignite in small dragon's pool area, and the semicoke of selection is that this jet coal is pyrolyzed 1 at 500 DEG C
30 minutes resulting semicokes of hour.Feedstock analysis index is as follows:
- 9 lignite analysis indexes of table
- 10 semicoke analysis indexes of table
| Serial number | Test item | Unit | Data |
| 1 | Moisture Mt | % | 1.54 |
| 2 | Ash content Ad | % | 13.67 |
| 3 | Volatile matter Vd | % | 13 |
| 4 | Heating quantity of bomb cylinder (Qb, ad) | MJ/kg | 24.7 |
| 5 | Sulphur ST, d | % | 1.36 |
| 6 | Fixed carbon FCad | % | 75.68 |
Lignite and semicoke are blended according to mass ratio 45:9 (5:1).Blend addition crusher is carried out after being crushed,
The waste water generated with gas purification process is added in coal pulverizer by the mass ratio of 70:1, and the ore grinding slurrying of wet process high concentration is selected in slurrying
Technique.Tailing water analysis index see the table below:
- 11 tailing water analysis index of table
According still further to mixture and water, additive (for sodium lignin sulfonate: polyacrylamide=1:1), lime stone and ammonium hydroxide
Mass ratio is that the ratio of 71:33:1:5:5 is ground into the water-coal-slurry with certain particle size distribution.The water coal slurry concentration exists
62% or so, mobility is preferable, and stability is preferable, can be used for coal slurry gasifier.Gained water-coal-slurry analysis indexes see the table below.
- 12 water-coal-slurry analysis indexes of table
GB/T 31426-2015 gasified coal water slurry technical requirements and embodiment comparison are listed in the table below
As can be seen from the above table, water-coal-slurry prepared by the present invention reaches GB/T 31426-2015 gasified coal water slurry technology and wants
The II grade standard asked.From above-described embodiment as can be seen that the water coal slurry concentration for taking the method for the present invention to prepare is not less than 60%, ash
Divide and be not more than 9.35%, apparent viscosity is not more than 1095mPas, and granularity is not more than 500 μm, and coal ash melting property flowing temperature is not
Greater than 1300 DEG C, chlorinity is not more than 0.05%, and arsenic is not more than 15 μ g/g, and mercury is not more than 0.07 μ g/g.And pyrolysis of coal sub-prime point
Grade is combined using technology, has industrial application value.
The present invention is not limited to the above embodiments, on the basis of technical solution disclosed by the invention, the skill of this field
For art personnel according to disclosed technology contents, one can be made to some of which technical characteristic by not needing creative labor
A little replacements and deformation, these replacements and deformation are within the scope of the invention.
Claims (8)
1. a kind of coal and semicoke are the method that raw material composite waste prepares water-coal-slurry, which comprises the following steps:
1) blending is broken: using coal and semicoke as raw material, press (0.2~5): 1 mass ratio is added crusher and is crushed, and obtains broken
Raw material；
2) mixed grinding: broken raw material is pressed (62~70) with the waste water that gas purification process generates: 1 mass ratio mixes mixed
Object is closed, then mixture and water, additive, lime stone and ammonium hydroxide are pressed into (63~71): (20~33): 1:(2~10): (1~10)
Mass ratio be added coal pulverizer, ore grinding is carried out in coal pulverizer, be made with solid size distribution water-coal-slurry centrotheca；
3) filter pulp: water-coal-slurry is obtained after water-coal-slurry centrotheca is filtered.
2. coal according to claim 1 and semicoke are the method that raw material composite waste prepares water-coal-slurry, which is characterized in that step
It is rapid 1) in, the coal and semicoke are that the partial size 6mm that screens out during pyrolysis of coal sub-prime classified utilization is below, are difficult to processing benefit
Coal and semicoke.
3. coal according to claim 2 and semicoke are the method that raw material composite waste prepares water-coal-slurry, which is characterized in that institute
State coal selection lignite, jet coal.
4. coal according to claim 2 and semicoke are the method that raw material composite waste prepares water-coal-slurry, which is characterized in that institute
Stating semicoke is that coal is heated to 350 DEG C~650 DEG C pyrolysis, 1~2 hour gains.
5. coal according to claim 1 and semicoke are the method that raw material composite waste prepares water-coal-slurry, which is characterized in that institute
It states in step 2), the waste water refers to the waste water of gas purification process generation during pyrolysis of coal sub-prime classified utilization, and feature refers to
It is designated as petroleum content >=2500mg/L, phenol content >=2300mg/L.
6. coal according to claim 1 and semicoke are the method that raw material composite waste prepares water-coal-slurry, which is characterized in that institute
It states in step 2), the additive is the compound of sodium lignin sulfonate and polyacrylamide, and mass ratio is sodium lignin sulfonate:
Polyacrylamide=(0.2~5): 1.
7. coal according to claim 1 and semicoke are the method that raw material composite waste prepares water-coal-slurry, which is characterized in that step
It is rapid 2) in, the solid granularity is distributed as solid grain size at 0.7 μm~500 μm.
8. coal described in any one of -7 and semicoke are the method that raw material composite waste prepares water-coal-slurry according to claim 1,
It is characterized in that, the water coal slurry concentration obtained is not less than 60%, and ash content is not more than 9.35%, and apparent viscosity is not more than
1095mPas, granularity are not more than 500 μm, and coal ash melting property flowing temperature is not more than 1300 DEG C, and chlorinity is not more than 0.05%,
Arsenic is not more than 15 μ g/g, and mercury is not more than 0.07 μ g/g.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110194974A (en) * | 2019-06-04 | 2019-09-03 | 南京大学 | A kind of coal compounds the method for preparing slurry with semicoke |
| CN110240960A (en) * | 2019-06-13 | 2019-09-17 | 国家能源投资集团有限责任公司 | A kind of pulping process that low-disintegration coal is coupled with semicoke |
| CN110334855A (en) * | 2019-06-17 | 2019-10-15 | 浙江大学 | Intelligence determines the prediction and optimization system and method for waste water water-coal-slurry preparation program |
| CN110451595A (en) * | 2019-06-26 | 2019-11-15 | 临涣焦化股份有限公司 | A kind of method of coking wastewater harmless treatment |
| CN112143534A (en) * | 2019-06-28 | 2020-12-29 | 国家能源投资集团有限责任公司 | Coal water slurry and preparation method and application thereof |
| CN114702991A (en) * | 2022-04-19 | 2022-07-05 | 中国矿业大学 | Method for preparing coal water slurry by matching low-rank coal low-temperature pyrolysis semicoke with non-caking coal |
Citations (3)
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| CN110194974A (en) * | 2019-06-04 | 2019-09-03 | 南京大学 | A kind of coal compounds the method for preparing slurry with semicoke |
| CN110240960A (en) * | 2019-06-13 | 2019-09-17 | 国家能源投资集团有限责任公司 | A kind of pulping process that low-disintegration coal is coupled with semicoke |
| CN110334855A (en) * | 2019-06-17 | 2019-10-15 | 浙江大学 | Intelligence determines the prediction and optimization system and method for waste water water-coal-slurry preparation program |
| CN110451595A (en) * | 2019-06-26 | 2019-11-15 | 临涣焦化股份有限公司 | A kind of method of coking wastewater harmless treatment |
| CN112143534A (en) * | 2019-06-28 | 2020-12-29 | 国家能源投资集团有限责任公司 | Coal water slurry and preparation method and application thereof |
| CN112143534B (en) * | 2019-06-28 | 2022-12-27 | 国家能源投资集团有限责任公司 | Coal water slurry and preparation method and application thereof |
| CN114702991A (en) * | 2022-04-19 | 2022-07-05 | 中国矿业大学 | Method for preparing coal water slurry by matching low-rank coal low-temperature pyrolysis semicoke with non-caking coal |
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Application publication date: 20190122 |