CN106906022A - A kind of sodium coal substep removing sodium purification method high - Google Patents
A kind of sodium coal substep removing sodium purification method high Download PDFInfo
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- CN106906022A CN106906022A CN201710106778.4A CN201710106778A CN106906022A CN 106906022 A CN106906022 A CN 106906022A CN 201710106778 A CN201710106778 A CN 201710106778A CN 106906022 A CN106906022 A CN 106906022A
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- coal
- sodium
- purifying vessel
- glycerine
- deionized 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
- 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
- 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
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- Combustion & Propulsion (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The present invention is a kind of sodium coal substep removing sodium purification method high, is characterized in, is comprised the following steps：Sodium coal raw coal high and deionized water are loaded into purifying vessel simultaneously, then the purifying vessel is closed；At normal temperatures；It is washed with deionized 46 hours, then filters；By coal sample and mixed liquor in mass ratio 1:5 10 load purifying vessel simultaneously again, then the purifying vessel is closed；Temperature rises to 60 90 DEG C；Stablize 68 hours；Normal temperature is cooled to, is then filtered.Have the advantages that process is simple, operation are simple, invest small, environmentally friendly.Both the technique that can be used for high-quality Filter Tuber For Clean Coal, can be used for the generating of quasi- east coal again.The method of the present invention is applied to the pulverized coal preparation system in power plant, coal drying, the pretreatment of Coal Chemical Industry, and the discharge without waste gas, waste liquid is consequently belonging to the industry of greening and environmental protection.
Description
Technical field
It is a kind of sodium coal substep removing sodium high the invention belongs to sodium coal high cleaning field, more particularly to sodium coal removing sodium upgrading high
Purification method.
Background technology
Xinjiang Zhun Dong coalfields are the super-huge coalfields verified in Xinjiang in recent years, are one of self-contained coalfields of Largest In China.
Quasi- east coalfield resource reserve accounts for the 17.8% of 2.19 trillion tons of full boundary reserves, national coal reserves up to 390,000,000,000 tons（5.56 trillion
Ton）7%, coal resources reserves of verifying accumulative at present are 213,600,000,000 tons, 1.4 ten thousand square kilometres of coalfield coal-forming area, individual layer coal seam
It is most thick up to 80 meters, 43 meters of minable coal seam average thickness, the abundant local every square kilometre of coal reserves in coal seam up to 50,000,000 tons,
It is the maximum self-contained coalfield verified in Xinjiang in recent years, Xinjiang Zhun Dong coalfields are broadly divided into multicolored gulf mining area, great Jing mining areas, incite somebody to action
Jun Miao mining areas, western Black Hills mining area.Quasi- east coalfield is " Xin electricity Dong send ", " West-east Gas, " new coal east fortune " topmost energy are protected
Barrier base, is also the Xinjiang topmost coal supply source of coal electricity Coal Chemical Industry.The development and application of quasi- east coal are Xinjiang or even China
The key of coal sustainable development.
The research such as Yang Zhongcan finds the content (Na of the sodium in quasi- east coal2O is counted) it is up to more than 5%, hence it is evident that more than current typical case
Bituminous coal even lignite level containing sodium.Sodium is the master that coal causes heat-transfer surface to stain in the combustion process of boiler in coal
Factor, therefore sodium burning of coal high is wanted to utilize and greatly limited.Zhang Shouyu is to using boiler scaling and the corrosion of quasi- east coal
Problem is studied, and as a result shows that sodium amount high is the principal element for causing boiler surfaces dust stratification.Current China solves sodium coal knot high
Slag problem, the main method using the weak coal of burning contamination is mixed, but this method can only slow down contamination, it is impossible to fundamentally
Solve this problem.
HTHP removing sodium method, WATER-WASHING METHOD, traditional removing sodium are generally used to the accurate eastern sodium coal method for removing Na high in Xinjiang at present
Method is general to the removal effect of sodium coal high, and the sodium coal removing sodium treatment high such as such as Liu great Hai is not easy under the conditions of 250-375 DEG C
Scale industrial production, Zhang Shouyu et al. utilize deionized water coal washing, and the removal effect to ature of coal is not good.Chen Chuan etc. is developed
A kind of water and organic solvent 1:（50:500）Proportioning cleaning solution, sodium coal high is washed before application, removing sodium efficiency ratio
The efficiency of simple water washing brings up to 70%, reaches combustion index.Dai Baiqian etc. is to cleaning solution further study show that being washed in sodium coal high
Solution mixing during washing using ammonium acetate and nitric acid is better than deionized water, the removal of sodium coal high to sodium coal clean result high
Effect is up to 90%.This method carries out removing sodium treatment using different process in normal pressure uniform temperature substep to the accurate eastern sodium coal high in Xinjiang.
The content of the invention
The technical problems to be solved by the invention are：Overcome the shortcoming of prior art, there is provided a kind of process is simple, except sodium effect
Rate sodium coal substep removing sodium purification method high high, energy-saving, low sodium coal is obtained or without sodium coal to sodium coal high by removing sodium, can
Solve to make the problems such as gyp, heating surface contamination, corrosion during sodium burning of coal high, be particularly suited for Xinjiang Zhun Dong coalfields
Sodium coal high.
The present invention solve technical problem scheme be：A kind of sodium coal substep removing sodium purification method high, it is characterized in that, including with
Lower step：
1）A diameter of 0.2-0.6mm sodium coal raw coal high and deionized water are loaded into purifying vessel simultaneously, then the purifying vessel is close
Close, in the purifying vessel, sodium coal raw coal high is 1 with the mass ratio of deionized water：5-10；
2）The sodium coal raw coal high in the purifying vessel is washed with deionized 4-6 hours at normal temperatures, is then filtered；
3）By step 2）The coal sample of acquisition and mixed liquor in mass ratio 1:5-10 loads purifying vessel simultaneously again, then this is purified
Container closure；
4）The temperature of the closed purifying vessel is risen to 60-90 DEG C, is then stablized 6-8 hours；
5）The closed purifying vessel is cooled to normal temperature, is then filtered.
Coal sample after the purification is dried treatment.
The step 1）With step 2）The deionized water for using is fresh or step 2）Filter out coal sample and circulate
The deionized water for utilizing.
The step 3）The mixed liquor for using is made up of glycerine or glycerine, ethanol, deionized water and ferrous ion, its
Compound method is：
1. a certain amount of glycerine or glycerine are extracted in container, by glycerine or glycerine and ethanol 1：50 volume ratio adds ethanol
It is well mixed, then by glycerine or glycerine, ethanol, deionized water 1：50：250 volume ratio adds deionized water to be well mixed,
Obtain cleaning solution stand-by；
2. the cleaning solution for 1. obtaining the solution of ferrous ion and step is with mass ratio 1:The ratio of 5-10 is well mixed, you can
Obtain step 3）The mixed liquor for using.
The step 3）The mixed liquor or step 5 for using）The mixed liquor for filtering out coal sample and recycling.
The step 2）With step 4）Filter type or be vacuum filtration machine filtering.
The beneficial effects of the invention are as follows：The method of the present invention can at ambient pressure pass through according to the presence pattern of sodium in coal
Change cleaning solution species and temperature, raw coal structure is destroyed repeatedly in the presence of uniform temperature and pressure and Aqueous wash solvent
Balance, makes solubility（It is inorganic）Sodium and organic sodium, insolubility sodium realize optimal removing sodium effect under most suitable condition of work respectively
Really so that the inorganic sodium on sodium coal surface high is removed at normal temperatures and pressures, the organic sodium in sodium coal high is in normal pressure uniform temperature freedom
The lower removing of base initiator effect, makes the alkali metal such as the sodium in sodium coal surface high and pore migrate rapidly and dissolve, while
The elements such as a large amount of alkali metal are largely migrated to or are dissolved in wash solution including sodium, potassium, calcium, magnesium, sulphur, ashes etc., to reach
To the purpose of raw coal upgrading purification.The cleaning solution for being used remove pollutant while, because the presence of C, H causes ature of coal
Caloric value is improved.Sodium coal substep removing sodium purification method high of the invention, can be such that the alkali metal in sodium coal high is effectively removed, its
The removal efficiency of sodium is up to 98%.And, the deionized water of the inventive method and the mixed liquor containing ferrous ion can be circulated
Utilize, the deionized water of saturation and the mixed liquor containing ferrous ion also can be more applicable by being recycled again after treatment
In the area that water resource lacks.
The method of the present invention for the purpose of sodium coal high is become to meet the high-quality Filter Tuber For Clean Coal of boiler operatiopn, using from sodium coal high
Raw coal set about, the technological means of the alkali metal content in raw coal is reduced outside the stove, greatly improve or fundamentally solve to use
The significant problems such as the slagging that the generating set of sodium coal high is faced stains with heating surface, corrosion, are especially directed at filling for eastern coal
Divide has great economic worth and social effect using with development of the West Regions.
The method of the present invention is applied to the pulverized coal preparation system in power plant, coal drying, the pretreatment of Coal Chemical Industry, without waste gas, waste liquid
Discharge, be consequently belonging to the industry of greening and environmental protection.Technical scheme has the following advantages that:
1st, technical scheme process is simple, operation safety, invests small；
2nd, the water needed for the inventive method is mainly derived from the water in the Water Sproading and waste liquid in raw coal, fully saves water money
Source；.
3rd, the removing sodium coal of purifying vessel output is by after drying and upgrading, that is, becoming high-quality Filter Tuber For Clean Coal and directly applying to and use
The generating set of sodium coal dust high.So as to substantially improve the slagging and heating surface contamination, burn into clogging problems of boiler；
4th, the liquid after coal liquid is separated carries out electrolysis treatment into electrolytic cell to raw coal, can realize the recycling of waste liquid；
5th, improve 5.6% than raw coal by the ature of coal caloric value after the inventive method purification.
In sum, the present invention has the advantages that process is simple, operation are simple, invests small, environmentally friendly.Both can be used for high-quality
The technique of Filter Tuber For Clean Coal, can be used for the generating of quasi- east coal again.
Brief description of the drawings
Fig. 1 is the first width scanning electron microscope (SEM) photograph of sodium coal raw coal high used by the present invention；
Fig. 2 is the second width scanning electron microscope (SEM) photograph of sodium coal raw coal high used by the present invention；
Fig. 3 is the 3rd width scanning electron microscope (SEM) photograph of sodium coal raw coal high used by the present invention；
Fig. 4 is the first width scanning electron microscope (SEM) photograph by the coal sample after the inventive method washing；
Fig. 5 is the second width scanning electron microscope (SEM) photograph by the coal sample after the inventive method washing；
Fig. 6 is the 3rd width scanning electron microscope (SEM) photograph by the coal sample after the inventive method washing.
Specific embodiment
The present invention is further described with reference to the accompanying drawings and examples.
A kind of reference picture 1- Fig. 6, embodiment 1, sodium coal substep removing sodium purification method high of the present embodiment is comprised the following steps：
1）A diameter of 0.01-0.02mm sodium coal raw coal high and fresh deionized water are loaded into purifying vessel simultaneously, then this is net
Change container closure, in the purifying vessel, sodium coal raw coal high is 1 with the mass ratio of deionized water：5；
2）The sodium coal raw coal high in the purifying vessel is washed with deionized 6 hours at normal temperatures, is then filtered, and done
Dry treatment；
3）By step 2）The coal sample of acquisition and mixed liquor in mass ratio 1:5-10 loads purifying vessel simultaneously again, then this is purified
Container closure；
The mixed liquor is made up of glycerine, ethanol, deionized water and frerrous chloride, and its compound method is：
1. glycerine is extracted in container, by glycerine and ethanol 1：50 volume ratio adds ethanol to be well mixed, then by glycerine, second
Alcohol, deionized water 1：50：250 volume ratio adds deionized water to be well mixed, and obtains cleaning solution stand-by；
2. the cleaning solution for 1. obtaining frerrous chloride and step is with mass ratio 1:The ratio of 5-10 is well mixed, you can mixed
Liquid；
4）The temperature of the closed purifying vessel is risen to 90 DEG C, is then stablized 6-8 hours；
5）The closed purifying vessel is cooled to normal temperature, is then filtered, and carry out dried process.
In the present embodiment, by step 2）The coal sample and step 5 of acquisition）The coal sample of acquisition carries out detection after testing respectively, step
Rapid 2）In the coal sample of acquisition, the removal efficiency of sodium reaches 65%, step 5）In the coal sample of acquisition, the removal efficiency of sodium reaches 89%.
For whether observation the present embodiment ature of coal structure during removing sodium changes, swept under 1000 times of multiplication factor
The coal sample after the coal sample and the present embodiment washing for observing sodium coal raw coal high is retouched, picture Fig. 1-Fig. 3 and Ben of sodium coal raw coal high is obtained
Picture Fig. 4-Fig. 6 of coal sample after embodiment washing.
Be can be seen that by Fig. 1-Fig. 6：It is to be attached to smaller material that vague image is compared on the surface of the coal sample of sodium coal raw coal high,
The surface texture of the coal sample after the present embodiment washing is than more visible and without attachment, coal sample and sodium high after the present embodiment washing
The coal sample of coal raw coal is compared, and form is without too big change.
Embodiment 2, the present embodiment is comprised the following steps：
1）5g sodium coal raw coal high and fresh deionized water are loaded into purifying vessel simultaneously, then the purifying vessel is closed, it is described
In purifying vessel, sodium coal raw coal high is 1 with the mass ratio of deionized water：5；
2）The sodium coal raw coal high in the purifying vessel is washed with deionized 6 hours at normal temperatures, is then filtered, and done
Dry treatment；
3）By step 2）The coal sample of acquisition is placed in the conical flask of 100ml, and is added thereto to the mixed liquor of 50ml, and mixing is equal
It is even；
The mixed liquor is made up of glycerine, ethanol, deionized water and frerrous chloride, and its compound method is：
1. glycerine is extracted in container, by glycerine and ethanol 1：50 volume ratio adds ethanol to be well mixed, then by the third three
Alcohol, ethanol, deionized water 1：50：250 volume ratio adds deionized water to be well mixed, and obtains cleaning solution stand-by；
2. the cleaning solution for 1. obtaining frerrous chloride and step is with mass ratio 1:The ratio of 5-10 is well mixed, you can mixed
Liquid；
4）Preservative film on taper bottle mouth sleeve is sealed, is kept for 6 hours under 60 DEG C of constant temperature；
5）Conical flask is cooled to normal temperature, is then filtered, and carry out dried process.
After testing, the removal efficiency of the sodium in sodium coal high reaches 45.94%.
Embodiment 3, the present embodiment is comprised the following steps：
1）5g sodium coal raw coal high and fresh deionized water are loaded into purifying vessel simultaneously, then the purifying vessel is closed, it is described
In purifying vessel, sodium coal raw coal high is 1 with the mass ratio of deionized water：5；
2）The sodium coal raw coal high in the purifying vessel is washed with deionized 6 hours at normal temperatures, is then filtered, and done
Dry treatment；
3）By step 2）The coal sample of acquisition is placed in the conical flask of 100ml, and is added thereto to the mixed liquor of 50ml, and mixing is equal
It is even；
The mixed liquor is made up of glycerine, ethanol, deionized water and frerrous chloride, and its compound method is：
1. glycerine is extracted in container, by glycerine and ethanol 1：50 volume ratio adds ethanol to be well mixed, then by glycerine, second
Alcohol, deionized water 1：50：250 volume ratio adds deionized water to be well mixed, and obtains cleaning solution stand-by；
2. the cleaning solution for 1. obtaining frerrous chloride and step is with mass ratio 1:10 ratio is well mixed, and makes introducing ferrous iron
Cleaning solution in iron ion content reach 1mmol/L, you can obtain mixed liquor；
4）Preservative film on taper bottle mouth sleeve is sealed, is kept for 6 hours under 60 DEG C of constant temperature；
5）Conical flask is cooled to normal temperature, is then filtered, and carry out dried process.
After testing, the removal efficiency of the sodium in sodium coal high reaches 58.93%.
Claims (6)
1. a kind of sodium coal substep removing sodium purification method high, it is characterized in that, comprise the following steps：
1）A diameter of 0.2-0.6mm sodium coal raw coal high and deionized water are loaded into purifying vessel simultaneously, then the purifying vessel is close
Close, in the purifying vessel, sodium coal raw coal high is 1 with the mass ratio of deionized water：5-10；
2）The sodium coal raw coal high in the purifying vessel is washed with deionized 4-6 hours at normal temperatures, is then filtered；
3）By step 2）The coal sample of acquisition and mixed liquor in mass ratio 1:5-10 loads purifying vessel simultaneously again, then this is purified
Container closure；
4）The temperature of the closed purifying vessel is risen to 60-90 DEG C, is then stablized 6-8 hours；
5）The closed purifying vessel is cooled to normal temperature, is then filtered.
2. a kind of sodium coal substep removing sodium purification method high as claimed in claim 1, it is characterized in that：Coal sample after the purification is entered
Row dried process.
3. a kind of sodium coal substep removing sodium purification method high as claimed in claim 1, it is characterized in that：The step 1）What is used goes
Ionized water is fresh or step 2）The deionized water for filtering out coal sample and recycling.
4. a kind of sodium coal substep removing sodium purification method high as claimed in claim 1, it is characterized in that：The step 3）What is used is mixed
Liquid is closed by glycerine or glycerine, ethanol, deionized water and solution composition containing ferrous ion, its compound method is：
1. glycerine or glycerine are extracted in container, by glycerine or glycerine and ethanol 1：50 volume ratio adds ethanol mixing equal
It is even, then by glycerine or glycerine, ethanol, deionized water 1：50：250 volume ratio adds deionized water to be well mixed, and is washed
Wash liquid stand-by；
2. the cleaning solution for 1. obtaining the solution containing ferrous ion and step is with mass ratio 1:The ratio of 5-10 is well mixed, i.e.,
Can obtain step 3）The mixed liquor for using.
5. a kind of sodium coal substep removing sodium purification method high as claimed in claim 4, it is characterized in that：The step 3）What is used is mixed
Close liquid or step 5）The mixed liquor for filtering out coal sample and recycling.
6. a kind of sodium coal substep removing sodium purification method high as claimed in claim 1, it is characterized in that：The step 2）With step 4）
Filter type or be vacuum filtration machine filtering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710106778.4A CN106906022A (en) | 2017-02-27 | 2017-02-27 | A kind of sodium coal substep removing sodium purification method high |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710106778.4A CN106906022A (en) | 2017-02-27 | 2017-02-27 | A kind of sodium coal substep removing sodium purification method high |
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| Publication Number | Publication Date |
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| CN106906022A true CN106906022A (en) | 2017-06-30 |
Family
ID=59207924
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|---|---|---|---|
| CN201710106778.4A Withdrawn CN106906022A (en) | 2017-02-27 | 2017-02-27 | A kind of sodium coal substep removing sodium purification method high |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004039927A1 (en) * | 2002-10-29 | 2004-05-13 | Ucc Energy Pty Limited | Process for demineralising coal |
| CN203159567U (en) * | 2012-11-30 | 2013-08-28 | 上海理工大学 | Immersion type device for upgrading high-sodium coal |
| CN104762120A (en) * | 2015-03-04 | 2015-07-08 | 新疆宜化化工有限公司 | Method and equipment for sodium removal of high sodium coal |
| CN105238488A (en) * | 2015-09-30 | 2016-01-13 | 华中科技大学 | Coal dealkalization method |
-
2017
- 2017-02-27 CN CN201710106778.4A patent/CN106906022A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004039927A1 (en) * | 2002-10-29 | 2004-05-13 | Ucc Energy Pty Limited | Process for demineralising coal |
| CN203159567U (en) * | 2012-11-30 | 2013-08-28 | 上海理工大学 | Immersion type device for upgrading high-sodium coal |
| CN104762120A (en) * | 2015-03-04 | 2015-07-08 | 新疆宜化化工有限公司 | Method and equipment for sodium removal of high sodium coal |
| CN105238488A (en) * | 2015-09-30 | 2016-01-13 | 华中科技大学 | Coal dealkalization method |
Non-Patent Citations (1)
| Title |
|---|
| 吕太等: "新疆高钠煤快速水处理脱钠研究", 《东北电力大学学报》 * |
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Application publication date: 20170630 |