CN105969449A - Refining production method for reducing ash in lignite - Google Patents
Refining production method for reducing ash in lignite Download PDFInfo
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- CN105969449A CN105969449A CN201610495962.8A CN201610495962A CN105969449A CN 105969449 A CN105969449 A CN 105969449A CN 201610495962 A CN201610495962 A CN 201610495962A CN 105969449 A CN105969449 A CN 105969449A
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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
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/04—Raw material of mineral origin to be used; Pretreatment 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
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
- C10L5/34—Other details of the shaped fuels, e.g. briquettes
- C10L5/36—Shape
- C10L5/363—Pellets or granulates
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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
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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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- 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
- C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
- C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency
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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
- C10L2290/08—Drying or removing 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
- C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
- C10L2290/22—Impregnation or immersion of a fuel component or a fuel as a whole
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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
- C10L2290/545—Washing, scrubbing, stripping, scavenging for separating fractions, components or impurities during preparation or upgrading of a fuel
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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
- C10L2290/546—Sieving for separating fractions, components or impurities during preparation or upgrading of a fuel
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- Chemical & Material Sciences (AREA)
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- Environmental & Geological Engineering (AREA)
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Abstract
The invention relates to a lignite refining process, in particular to a refining production method for reducing ash in lignite. The problem of ash in lignite is solved. The refining production method particularly includes the following steps of (1) lignite crushing; (2) washing; (3) acid leaching; (4) dehydration, to be more specific, fishing up a 3-20mm qualified part of acid leaching pulp as a clean coal product to be accumulated and dehydrated, feeding the part with the size less than 3mm into a sedimentation tank, and clarifying filtered-out water prior to recycling. Quality of lignite is improved, product marketing is broadened, a production method for concentrated coal particles is provided, lignite is adopted, crushing equipment is utilized to crush raw coal to 3-20mm, ore washing, acid leaching, screening and dehydration are performed, and ash in the produced 3-20mm lignite particles is reduced.
Description
Technical field
The present invention relates to brown coal refinery practice, a kind of reduce the refining production method of ash in brown coal.
Background technology
Brown coal, have another name called bavin coal (English: Lignite (coal)；brown coal ；Wood coal), it is the pit coal that degree of coalification is minimum.A kind of brownish black between peat and pitch coal, lacklustre rudimentary coal.Chemical reactivity is strong, in atmosphere easily air slaking, is difficult to store and transport, serious to air pollution during burning.But owing to fat coal is the most mined out, brown coal have become the coal that China mainly uses.Current brown coal are only used as common coal and sell, only about 500 yuan/ton, and as there being the clean fine coal granule of some strength, price is at about 1500 yuan/ton, and prospect for sales is wide, improves product quality and expands sales.
Such as the disclosure of the invention a kind of method of brown coal reverse flotation deliming of Application No. 201510959677.2, belong to microorganism application technology and technical field of mineral processing.The method includes: (1) adds brown coal origin Paenibacillus polymyxa or yeast and silicate bacteria metabolism protein in ore pulp, it is subsequently adding inhibitor dextrin and silicate bacteria metabolism polysaccharide, adds amine collector and foaming agent stirring carries out a flotation；(2) again adding inhibitor dextrin and silicate bacteria metabolism polysaccharide in the ore pulp after flotation, the most again add amine collector and foaming agent stirring carries out secondary flotation, obtaining product in groove is final cleaned coal.Conventional flotation medicament is combined use by this method with microbial reagent, improve brown coal separating effect, improve collecting agent and particulate clay mineral, the absorption of quartz and clay mineral, the flotability of quartz, and utilize microbe metabolite to suppress brown coal, reduce the consumption of conventional inhibitor；Gained reverse flotation cleaned coal is more beneficial for being used as preparation water-coal-slurry.
Above-mentioned technique needs to use substantial amounts of mushroom to realize producing, such production technology is relatively costly, it is impossible to well adapts to the local brown coal of Lancang, yunnan and produces, the bad grasp of concrete technological parameter, realize maximizing the bad realization of production process route, so leverage production efficiency.
Summary of the invention
In order to overcome the disadvantages mentioned above of prior art, the present invention provides a kind of and improves brown coal quality, expand product marketing, the production method of a kind of separation coal granule is provided, the present invention uses brown coal, utilizes disintegrating apparatus that raw coal is crushed to 3-20mm, carries out washup, acidleach, screening and dehydration, the fall low-ash brown coal refining production method of the brown coal granule of output 3-20mm..
The technical solution adopted for the present invention to solve the technical problems is, a kind of reduces the refining production method of ash in brown coal, concrete uses following steps to carry out,
1. brown coal crushing: selecting self-produced brown coal to crush, Task-size Controlling is less than 25mm.
2. washing: the brown coal that granularity is less than 25mm use mining log washer to carry out washup.
3. acidleach: brown coal after washing put into leaching tanks, adds sulphuric acid, liquid-solid mass ratio 1-1.5:1, extraction time 3 hours.
4. dehydration: be dehydrated by acid leaching ore pulp, is partially into sedimentation tank less than 3mm, and dehydration clarification of water out recycles, and 3-20mm right rail is as head coal product.
More have technical scheme, described step 1. in broken use jaw crusher.So ensure that the granularity after crushing can keep certain intensity, can use as reducing agent very well simultaneously.
More having technical scheme, described step is 3. middle controls sulfuric acid concentration 3-10%, and temperature keeps 60 DEG C.The process to ash is achieved very well by temperature and sulfuric acid concentration.
Technical scheme, described step is more had 4. to be dehydrated and realized by accumulation.Simple accumulation just can realize dehydration, and the moisture simultaneously taken off can be by recycling after clarification to ore-dressing technique.
The method have the advantages that grinding particle size controls, less than 25mm, thus can meet the requirement that last night in later stage, reducing agent used very well, so be obtained in that higher use value；Use conventional washup technique to realize the cleaning to physics ash, so contribute to later stage ash treatment, reduce intractability, utilize ready-made washup equipment can be realized as simultaneously, reduce production cost；There is sulphuric acid just can again realize reducing ash afterwards, operate the easiest, and ash reducing effect is obvious.
Detailed description of the invention
Embodiment
1
A kind of reduce the refining production method of ash in brown coal, concrete use following steps to carry out:
1. brown coal crushing, selects self-produced brown coal, crushes with jaw crusher, and Task-size Controlling is less than 25mm.Task-size Controlling brown coal granule has certain intensity and lumpiness, meets the requirement as reducing agent.
2. wash, use mining log washer to carry out washup in the brown coal less than 25mm, deviate from the ash that wherein physics is mingled with.Washup process uses common washup technique to carry out.
3. acidleach, will put into leaching tanks through washed brown coal, adds sulphuric acid, control sulfuric acid concentration 6%, and temperature keeps 60 DEG C, liquid-solid ratio 1:1, extraction time 3 hours.
4. being dehydrated, 3-20mm right rail is got accumulation as head coal product and is dehydrated by acid leaching ore pulp, is partially into sedimentation tank less than 3mm, and the clarification of water Posterior circle leached uses.
Embodiment
2
A kind of reduce the refining production method of ash in brown coal, concrete use following steps to carry out:
1. brown coal crushing, selects self-produced brown coal, crushes with jaw crusher, and Task-size Controlling is less than 25mm.Task-size Controlling brown coal granule has certain intensity and lumpiness, meets the requirement as reducing agent.
2. wash, use mining log washer to carry out washup in the brown coal less than 25mm, deviate from the ash that wherein physics is mingled with.Washup process uses common washup technique to carry out.
3. acidleach, will put into leaching tanks through washed brown coal, adds sulphuric acid, control sulfuric acid concentration 7%, and temperature keeps 60 DEG C, liquid-solid ratio 1.5:1, extraction time 3 hours.
4. being dehydrated, 3-20mm right rail is got accumulation as head coal product and is dehydrated by acid leaching ore pulp, is partially into sedimentation tank less than 3mm, and the clarification of water Posterior circle leached uses.
Embodiment
3
A kind of reduce the refining production method of ash in brown coal, concrete use following steps to carry out:
1. brown coal crushing, selects self-produced brown coal, crushes with jaw crusher, and Task-size Controlling is less than 25mm.Task-size Controlling brown coal granule has certain intensity and lumpiness, meets the requirement as reducing agent.More can help to carry high-ash rate of descent after broken, the most well reduction processes level.
2. wash, use mining log washer to carry out washup in the brown coal less than 25mm, deviate from the ash that wherein physics is mingled with.Washup process uses common washup technique to carry out.
3. acidleach, will put into leaching tanks through washed brown coal, adds sulphuric acid, control sulfuric acid concentration 5%, and temperature keeps 60 DEG C, liquid-solid ratio 1.2:1, extraction time 3 hours.
4. being dehydrated, 3-20mm right rail is got accumulation as head coal product and is dehydrated by acid leaching ore pulp, is partially into sedimentation tank less than 3mm, and the clarification of water Posterior circle leached uses.
For proving that the present invention has good efficiency, enumerate typical embodiments as follows:
In table, A-ash, w is moisture, and c is phosphorus content, and v is volatile matter, Fe-iron content；Ash divides, the part that inside brown coal, some heating can be volatilized.
Enterprise product quality is improved by the present invention, expands Sales Channel.It addition, as borderland enterprise, extend Product processing chain, dispose part employee, stability in border areas has been made that contribution.As there being the clean fine coal granule of some strength, price is at about 1500 yuan/ton, and prospect for sales is wide, improves product quality and expands sales.
Claims (5)
1. reducing a refining production method for ash in brown coal, concrete employing following steps are carried out,
1. brown coal crushing: selecting self-produced brown coal to crush, Task-size Controlling is less than 25mm；
2. washing: the brown coal that granularity is less than 25mm use mining log washer to carry out washup；
3. acidleach: brown coal after washing put into leaching tanks, adds sulphuric acid, liquid-solid mass ratio 1-1.5:1, extraction time 3 hours；
4. dehydration: be dehydrated by acid leaching ore pulp, is partially into sedimentation tank less than 3mm, and dehydration clarification of water out recycles, and 3-20mm right rail is as head coal product.
The most as claimed in claim 1 a kind of reduce the refining production method of ash in brown coal, it is characterised in that: described step 1. in broken use jaw crusher.
The most as claimed in claim 1 a kind of reduce the refining production method of ash in brown coal, it is characterised in that: described step 3. in control sulfuric acid concentration 3-10%, temperature keeps 60 DEG C.
The most as claimed in claim 2 a kind of reduce the refining production method of ash in brown coal, it is characterised in that: described step 3. in control sulfuric acid concentration 3-10%, temperature keeps 60 DEG C.
5. a kind of as described in any one of claim 1-4 reduces the refining production method of ash in brown coal, it is characterised in that: 4. described step is dehydrated and is realized by accumulation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610495962.8A CN105969449A (en) | 2016-06-30 | 2016-06-30 | Refining production method for reducing ash in lignite |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610495962.8A CN105969449A (en) | 2016-06-30 | 2016-06-30 | Refining production method for reducing ash in lignite |
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| CN105969449A true CN105969449A (en) | 2016-09-28 |
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| CN201610495962.8A Pending CN105969449A (en) | 2016-06-30 | 2016-06-30 | Refining production method for reducing ash in lignite |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107699263A (en) * | 2017-10-19 | 2018-02-16 | 曲靖市盛凯焦化有限责任公司 | A kind of coking process with addition of lignite |
Citations (5)
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| CN1078213A (en) * | 1992-04-28 | 1993-11-10 | 宁夏回族自治区冶金工业总公司活性炭技术开发部 | A kind of method of producing decoloration active carbon with non-caking coal |
| CN101209839A (en) * | 2007-12-24 | 2008-07-02 | 中国科学院山西煤炭化学研究所 | Preparation method of high performance active carbon |
| WO2010026600A1 (en) * | 2008-09-03 | 2010-03-11 | Tata Steel Limited | An improved beneficiation process to produce low ash clean coal from high ash coals |
| CN101747962A (en) * | 2008-12-16 | 2010-06-23 | 秦才东 | Quasi-liquid fuel for internal combustion engines and delivery and spray method thereof |
| CN103172064A (en) * | 2013-04-12 | 2013-06-26 | 宁夏大学 | Low-ash coal-based activated carbon quick activation production technology |
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2016
- 2016-06-30 CN CN201610495962.8A patent/CN105969449A/en active Pending
Patent Citations (5)
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| CN101209839A (en) * | 2007-12-24 | 2008-07-02 | 中国科学院山西煤炭化学研究所 | Preparation method of high performance active carbon |
| WO2010026600A1 (en) * | 2008-09-03 | 2010-03-11 | Tata Steel Limited | An improved beneficiation process to produce low ash clean coal from high ash coals |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107699263A (en) * | 2017-10-19 | 2018-02-16 | 曲靖市盛凯焦化有限责任公司 | A kind of coking process with addition of lignite |
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