CN106867619A - A kind of sour coupled desulfurization method of coal - Google Patents
A kind of sour coupled desulfurization method of coal Download PDFInfo
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- CN106867619A CN106867619A CN201710199577.3A CN201710199577A CN106867619A CN 106867619 A CN106867619 A CN 106867619A CN 201710199577 A CN201710199577 A CN 201710199577A CN 106867619 A CN106867619 A CN 106867619A
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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
- C10L9/00—Treating solid fuels to improve their combustion
- C10L9/02—Treating solid fuels to improve their combustion by chemical means
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Abstract
The invention discloses a kind of sour coupled desulfurization method of coal, be mix with HCl solution by by raw coal sample, impregnate, room temperature place, stirring, then suction filtration, vacuum drying；The coal sample for obtaining mixes with dense HF solution, impregnates again, room temperature is placed, stirring, then suction filtration, vacuum drying；The coal sample for obtaining again with salpeter solution hybrid infusion, room temperature places, stirring, then suction filtration, the sulphur of different shape in vacuum drying multi-step coupling removing coal.The method that the present invention passes through multistep strong acid coupled desulfurization, can remove the sulphur component of different shape in coal, significantly improve coal desulfurization efficiency, and achievement has good practicality.
Description
Technical field
The invention belongs to clean coal utilization field, and in particular to a kind of sour coupled desulfurization method of coal.
Background technology
Coal is the fossil fuel that present on earth amount is most abundant, distributional region is most wide.However, as economic high speed is sent out
Exhibition, high-quality low-sulfur coal constantly consumes, and substantial amounts of medium-high sulfur coal charcoal comes into the market, its using bringing a series of environmental problem,
Such as acid rain, haze.Therefore, the single desulfurization technology of tradition has been difficult cost-effectively to remove the sulphur content in coal, can
Enough by clean utilization.And people are increasing for the demand of high-quality coal resource so that substantial amounts of researcher puts energy
Improving desulfuration efficiency in the improvement of desulfurization technology.In order to improve desulfurization degree, shorten desulfurization time, a large number of researchers are from thing
The multiple directions such as reason, chemistry, biology are set out, and have probed into the method for various reinforcing coal desulfurizations.Sulphur content in coal is inorganic sulfur
And organic sulfur, the main component of inorganic sulfur include pyritic sulfur (FeS2), sulfate sulfur (SO42-), sulphur simple substance (S) and it is a small amount of its
His sulfide mineral；Organic sulfur then in the form of C-S keys combine in coal macromolecular skeleton, mainly with thiophenol, aliphatic mercaptan,
The form such as thioether and thiophene is present, and many sulfur methods can not realize the purpose that multicomponent sulphur is removed simultaneously at present.The present invention is logical
The method for crossing multistep coupled desulfurization, can remove the sulphur component of different shape in coal, significantly improve coal desulfurization efficiency.
The content of the invention
It is an object of the invention to provide a kind of sour coupled desulfurization method of coal, for the deficiency of existing Desulphurization Technology for Coal,
The present invention can significantly improve coal desulfurization efficiency.
Technical scheme is comprised the following steps：
（1）Coal pulverizer is first crushed to granularity below 200 mesh；
（2）Take a certain amount of raw coal sample to mix with HCl solution, impregnate, room temperature places 12h, agitator is stirred continuously, then suction filtration,
Distilled water is washed to be existed without chlorion（Silver nitrate solution is detected）, 60oC is vacuum dried 12h；
（3）The coal sample for obtaining mixes with dense HF solution, impregnates again, and room temperature places 12h, and agitator is stirred continuously, and then suction filtration, goes
Ionized water is washed, and 60oC is vacuum dried 12h；
（4）The coal sample for obtaining again with salpeter solution hybrid infusion, room temperature places 12h, and agitator is stirred continuously, then suction filtration, heat
Untill distilled water is fully washed to non-iron-ion（Potassium thiocyanate solution is detected）, 60oC vacuum drying chambers dry 12h.
As a preferred scheme of the invention, wherein step（2）The concentration of middle HCL solution is 30%-36%；Step（3）
In dense HF concentration be 35%-40%；Step（4）The concentration of middle salpeter solution is 65%-68%.As further preferred side
Case, wherein step（2）The concentration of middle HCL solution is 36%；Step（3）In dense HF concentration be 40%；Step（4）Middle salpeter solution
Concentration be 68%.
As another preferred scheme of the invention, wherein step（2）Middle raw coal sample is 1g with the mixed proportion of HCL solution
: 6mL, step（3）Middle raw coal sample is 1g: 7.5mL, step with the mixed proportion of HF solution（4）Middle raw coal sample and HNO3Solution
Mixed proportion is 1g: 7mL.
Through the coal sample after treatment, its full sulfur removal rate is up to 57.8%, and the method combines HCL, HF and HNO3It is each reflexive
Characteristic is answered, the sulphur of different shape has been carried out into effective removing, be a kind of boundless desulfurization technology of market prospects.
Specific embodiment
The present embodiment methods described is mainly carried out according to the following steps：
（1）Coal pulverizer is first crushed to granularity below 200 mesh.
（2）Take a certain amount of raw coal sample to mix with HCl solution, impregnate, room temperature places 12h, agitator is stirred continuously, then takes out
Filter, distilled water is washed to be existed without chlorion（Silver nitrate solution is detected）, 60oC be vacuum dried 12h, wherein, HCL solution it is dense
Degree is preferably 30%-36%, and raw coal sample is preferably 1g with the mixed proportion of HCL solution: 6mL.
（3）The coal sample for obtaining mixes with dense HF solution, impregnates again, and room temperature places 12h, and agitator is stirred continuously, then takes out
Filter, deionized water washing, 60oC is vacuum dried 12h, wherein, the concentration of dense HF is preferably 35%-40%, raw coal sample and HF solution
Mixed proportion is preferably 1g: 7.5mL.
（4）The coal sample for obtaining again with salpeter solution hybrid infusion, room temperature places 12h, and agitator is stirred continuously, then takes out
Filter, untill hot distilled water is fully washed to non-iron-ion（Potassium thiocyanate solution is detected）, 60oC vacuum drying chambers dry 12h, its
In, the concentration of salpeter solution is preferably 65%-68%, raw coal sample and HNO3The mixed proportion of solution is preferably 1g: 7mL.
Specific examples below is in order to further illustrate the present invention, rather than limitation of the invention.
Embodiment 1：
（1）Coal pulverizer is first crushed to granularity in 150 mesh；
（2）Take a certain amount of raw coal sample and HCl solution（36% concentrated hydrochloric acid is mixed with water with 1: 1 volume ratio）With 1g: 6mL ratio
Mixing, dipping, room temperature place 12h, and agitator is stirred continuously, then suction filtration, and distilled water is washed to be existed without chlorion（Silver nitrate
Solution is detected）, 60oC is vacuum dried 12h, and this process mainly removes the sulfate sulfur in coal.
（3）The coal sample for obtaining is again that 40% dense HF is mixed with 1g: 7.5ml ratio, impregnated with mass fraction, and room temperature is put
12h is put, agitator is stirred continuously；Then suction filtration, deionized water washing, 60oC is vacuum dried 12h.This process is further removed
Sulfate sulfur in coal.
（4）The coal sample for obtaining again with salpeter solution（68% concentrated nitric acid is mixed with water with 1: 7 volume ratio）With 1g: 35mL
Ratio hybrid infusion, room temperature places 12h, and agitator is stirred continuously.Then suction filtration, hot distilled water is fully washed to non-iron-ion and is
Only（Potassium thiocyanate solution is detected）, 60oC vacuum drying chambers dry 12h.This process is stripped of pyritic sulfur and remaining sulfuric acid
Salt sulphur.
Determined through analysis, the removal efficiency of full content of Sulphur in coal is 45~55%.
Claims (3)
1. a kind of sour coupled desulfurization method of coal, it is characterised in that comprise the following steps：
（1）Coal pulverizer is first crushed to granularity below 200 mesh；
（2）Take a certain amount of raw coal sample to mix with HCl solution, impregnate, room temperature places 12h, agitator is stirred continuously, then suction filtration,
Distilled water is washed to be existed without chlorion（Silver nitrate solution is detected）, 60oC is vacuum dried 12h；
（3）The coal sample for obtaining mixes with dense HF solution, impregnates again, and room temperature places 12h, and agitator is stirred continuously, and then suction filtration, goes
Ionized water is washed, and 60oC is vacuum dried 12h；
（4）The coal sample for obtaining again with salpeter solution hybrid infusion, room temperature places 12h, and agitator is stirred continuously, then suction filtration, heat
Untill distilled water is fully washed to non-iron-ion（Potassium thiocyanate solution is detected）, 60oC vacuum drying chambers dry 12h.
2. the sour coupled desulfurization method of coal as claimed in claim 1, it is characterised in that the step（2）The concentration of middle HCL solution
It is 30%-36%, step（3）In dense HF concentration be 35%-40%, step（4）The concentration of middle salpeter solution is 65%-68%.
3. the sour coupled desulfurization method of coal as claimed in claim 1, it is characterised in that the step（2）Middle raw coal sample is molten with HCL
The mixed proportion of liquid is 1g: 6mL, step（3）Middle raw coal sample is 1g: 7.5mL, step with the mixed proportion of HF solution（4）Central Plains
Coal sample and HNO3The mixed proportion of solution is 1g: 7mL.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710199577.3A CN106867619A (en) | 2017-03-30 | 2017-03-30 | A kind of sour coupled desulfurization method of coal |
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| CN201710199577.3A CN106867619A (en) | 2017-03-30 | 2017-03-30 | A kind of sour coupled desulfurization method of coal |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107573978A (en) * | 2017-10-19 | 2018-01-12 | 兖矿集团有限公司 | Chemical method prepares the removing system and method for acid-soluble mineral in ultra-clean coal |
| CN110527578A (en) * | 2019-09-30 | 2019-12-03 | 山西焦煤集团有限责任公司 | A kind of method that microwave-assisted halogen simple substance carries out big partial size coal desulfurization |
| CN110551552A (en) * | 2019-10-15 | 2019-12-10 | 山西焦煤集团有限责任公司 | process method for eliminating G value of electric coal |
| CN110551551A (en) * | 2019-10-15 | 2019-12-10 | 山西焦煤集团有限责任公司 | Method for eliminating G value of electric coal |
| CN111234851A (en) * | 2020-02-13 | 2020-06-05 | 安徽工业大学 | Method for improving oil shale cohesiveness for coal blending and coking |
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| CN2661313Y (en) * | 2003-09-09 | 2004-12-08 | 魏大山 | Coal and acid reaction desulfurizing and deashing device |
| CN102041128A (en) * | 2010-12-03 | 2011-05-04 | 宜宾天原集团股份有限公司 | Chemical deashing method for coal |
| CN102205962A (en) * | 2011-03-10 | 2011-10-05 | 安徽工业大学 | Device and method for preparing activated carbon material for electrochemical capacitor |
| CN102277186A (en) * | 2010-06-10 | 2011-12-14 | 中煤焦化控股有限责任公司 | Acid-process coke desulfuration technology |
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2017
- 2017-03-30 CN CN201710199577.3A patent/CN106867619A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2661313Y (en) * | 2003-09-09 | 2004-12-08 | 魏大山 | Coal and acid reaction desulfurizing and deashing device |
| CN102277186A (en) * | 2010-06-10 | 2011-12-14 | 中煤焦化控股有限责任公司 | Acid-process coke desulfuration technology |
| CN102041128A (en) * | 2010-12-03 | 2011-05-04 | 宜宾天原集团股份有限公司 | Chemical deashing method for coal |
| CN102205962A (en) * | 2011-03-10 | 2011-10-05 | 安徽工业大学 | Device and method for preparing activated carbon material for electrochemical capacitor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107573978A (en) * | 2017-10-19 | 2018-01-12 | 兖矿集团有限公司 | Chemical method prepares the removing system and method for acid-soluble mineral in ultra-clean coal |
| CN110527578A (en) * | 2019-09-30 | 2019-12-03 | 山西焦煤集团有限责任公司 | A kind of method that microwave-assisted halogen simple substance carries out big partial size coal desulfurization |
| CN110551552A (en) * | 2019-10-15 | 2019-12-10 | 山西焦煤集团有限责任公司 | process method for eliminating G value of electric coal |
| CN110551551A (en) * | 2019-10-15 | 2019-12-10 | 山西焦煤集团有限责任公司 | Method for eliminating G value of electric coal |
| CN111234851A (en) * | 2020-02-13 | 2020-06-05 | 安徽工业大学 | Method for improving oil shale cohesiveness for coal blending and coking |
| CN111234851B (en) * | 2020-02-13 | 2021-07-13 | 安徽工业大学 | Method for improving oil shale cohesiveness for coal blending and coking |
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Application publication date: 20170620 |