CN104194849A - Preparation technology of coal water slurry and coal water slurry - Google Patents
Preparation technology of coal water slurry and coal water slurry Download PDFInfo
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- CN104194849A CN104194849A CN201410490999.2A CN201410490999A CN104194849A CN 104194849 A CN104194849 A CN 104194849A CN 201410490999 A CN201410490999 A CN 201410490999A CN 104194849 A CN104194849 A CN 104194849A
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Abstract
The invention provides a preparation technology of coal water slurry and coal water slurry prepared by the preparation technology. The preparation technology comprises the following basic steps: firstly, mixing high-quality coal and common coal in proportion through a belt conveyer and a spiral conveyer, so as to obtain mixed coal, secondly, adding liquid medicine to the mixed coal, and conveying the mixed coal and the liquid medicine into a spiral coal feeder, thirdly, conveying the mixed coal and the liquid medicine into a ball grinding mill periodically through the spiral coal feeder, and obtaining coal water slurry after the mixed coal and the liquid medicine are ground by the ball grinding mill, fourthly, pumping the coal water slurry into an intermediate tank through a screw pump, and fifthly, pumping the coal water slurry into a finished product tank through the screw pump. The invention further provides coal water slurry prepared by the preparation technology. The preparation technology has the advantages that key equipment enhancement pump is canceled during the production technical processes of the coal water slurry, not only is the equipment investment reduced, but also the electric energy is saved, electing the high-quality coal and the common coal to be mixed in proportion to prepare the coal water slurry saves the cost of feed coal, and the quality of the coal water slurry is improved.
Description
Technical field
The coal water slurry that the present invention relates to a kind of coal water slurry preparation technology and prepare by this technique.
Background technology
Coal water slurry is by the coal of 65% left and right, 34% water and a kind of fuel slurry that chemical additive is processed into through special machinery (technique) on a small quantity.It can pumping, atomization, storage and stable burning as oil, and its calorific value is equivalent to half of oil fuel, can replace oil fuel to be used for food stove, power station, industrial furnace and kiln.Be used for replacing coal to use, there is burning high efficiency, load adjustment facility, reduce environmental pollution, improve working conditions and save by advantages such as coals.As a kind of novel clean fuel, in China, there is huge application market, be that country encourages the forming technique of promoting.
In order to guarantee calorific value and the environmental requirement of coal water slurry, country has put into effect the relevant criterion of coal water slurry.In order to meet standard regulation, the raw material of preparation coal water slurry is had to strict index request with coal.Reach the coal water slurry of standard, need to select high heating value, sulfur-bearing containing grey low, the fat coal that sludge forming performance is good.Yet these fat coals distribute few, and price is high, has affected the application popularization of coal water slurry.And existing coal water slurry preparation technology is loaded down with trivial details, the shortcoming such as the water coal slurry concentration prepared is low, poor fluidity.
Summary of the invention
Above-mentioned defect and problem for existing coal water slurry preparation technology, the invention provides a kind of coal water slurry preparation technology, cancelled key equipment-strengthening pump, simplifies coal water slurry preparation process, reduced equipment investment cost, saved the energy.
Another object of the present invention is to provide a kind of coal water slurry of using above-mentioned technique to prepare, reduce former coal charge cost, and effectively improved coal water slurry quality.
In order to achieve the above object, the invention provides following technical scheme:
A coal water slurry preparation technology, concrete steps are as follows:
Step 1, fat coal and common coal are mixed in proportion by rotary conveyor and worm conveyer, obtain mixing coal;
Step 2, by described mixing coal medicine adding input screw-type coal distributor;
Step 3, described screw-type coal distributor are regularly defeated by ball mill by mixing coal and liquid medicine, through described ball mill, grind and obtain coal water slurry;
Step 4, by spiral pump, described coal water slurry is pumped into tundish;
Step 5, by spiral pump, described coal water slurry is pumped into finished pot.
Described mixing coal mixed weight ratio is 3 (fat coals): 2 (common coals).
The present invention also provides a kind of coal water slurry, uses this coal water slurry preparation technology to be prepared from, and its advantage is:
In described coal water slurry, the content of each component is as follows: coal 65%～68%, water 31%～34%, medicament 1%;
Described medicament is comprised of dispersion agent and stablizer, and its ratio is 1: 2.
Described water coal slurry stability is good, stores six months without hard-caked sediment; Described viscosity in aqueous coal slurries is less than or equal to 1200mPas.
The invention has the beneficial effects as follows: the coal water slurry of coal water slurry preparation technology provided by the invention and preparation thereof, make in slurries production technology flow process, cancelled key equipment---strengthening pump, has not only reduced facility investment but also saved electric energy, and preparation flow is simplified; In addition, select fat coal and common coal to be mixed in proportion slurrying, realized the cost of the coal that economizes in raw materials; The coal water slurry that adopts the present invention to prepare, can reach 65-68% containing coal amount, and good stability, stores six months without hard-caked sediment, and viscosity is less than or equal to 1200mPas.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, by the specific embodiment of the present invention is described in detail, will make technical scheme of the present invention and other beneficial effect apparent.
Fig. 1 is coal water slurry preparation technology's of the present invention schema;
Embodiment
Technique means and the effect thereof for further setting forth the present invention, taked, be described in detail below in conjunction with the preferred embodiments of the present invention and accompanying drawing thereof.
Refer to Fig. 1, type of the present invention provides a kind of coal water slurry preparation technology, and concrete steps are as follows:
Step 1, fat coal and common coal are mixed in proportion by rotary conveyor and worm conveyer, obtain mixing coal;
Step 2, will mix coal medicine adding input screw-type coal distributor;
Step 3, screw-type coal distributor are regularly defeated by ball mill by mixing coal and liquid medicine, through ball mill, grind and obtain coal water slurry;
Step 4, by spiral pump, coal water slurry is pumped into tundish;
Step 5, by spiral pump, coal water slurry is pumped into finished pot.
The coal water slurry of using this coal water slurry preparation technology to be prepared from, the content of each component is as follows: coal 65%～68%, water 31%～34%, medicament 1%, described medicament is comprised of dispersion agent and stablizer, and its ratio is 1: 2.。As can be seen here, the coal amount that contains of coal water slurry has improved, and described in preparation technology, mixing coal mixed weight ratio is 3 (fat coals): 2 (common coals), coal is lower by 30%～50% than the price of fat coal at a low price.Thus, realized the target of the coal cost that economizes in raw materials.The coal water slurry that adopts this coal water slurry preparation technology to prepare, not only high containing coal amount, and also good stability, store six months without hard-caked sediment, viscosity in aqueous coal slurries is less than or equal to 1200mPas.
In sum, the invention provides the coal water slurry of a kind of coal water slurry preparation technology and preparation thereof, make, in slurries production technology flow process, to have cancelled key equipment---strengthening pump, has not only reduced facility investment but also saved electric energy, and preparation flow is simplified; In addition, select fat coal and common coal to be mixed in proportion slurrying, realized the cost of the coal that economizes in raw materials; The coal water slurry that adopts the present invention to prepare, can reach 65-68% containing coal amount, and good stability, stores six months without hard-caked sediment, and viscosity is less than or equal to 1200mPas.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion by the described protection domain with claim.
Claims (5)
1. a coal water slurry preparation technology, is characterized in that, concrete steps are as follows:
Step 1, fat coal and common coal are mixed in proportion by rotary conveyor and worm conveyer, obtain mixing coal;
Step 2, by described mixing coal medicine adding input screw-type coal distributor;
Step 3, described screw-type coal distributor are regularly defeated by ball mill by mixing coal and liquid medicine, through described ball mill, grind and obtain coal water slurry;
Step 4, by spiral pump, described coal water slurry is pumped into tundish;
Step 5, by spiral pump, described coal water slurry is pumped into finished pot.
2. a kind of coal water slurry preparation technology according to claim 1, is characterized in that, described mixing coal blending ratio is (weight ratio) 3 (fat coal): 2 (common coals).
3. a coal water slurry, is used this coal water slurry preparation technology to be prepared from, and it is characterized in that:
Step 1, fat coal and common coal are mixed in proportion by rotary conveyor and worm conveyer, obtain mixing coal;
Step 2, by described mixing coal medicine adding input screw-type coal distributor;
Step 3, described screw-type coal distributor are regularly defeated by ball mill by mixing coal and liquid medicine, through described ball mill, grind and obtain coal water slurry;
Step 4, by spiral pump, described coal water slurry is pumped into tundish;
Step 5, by spiral pump, described coal water slurry is pumped into finished pot;
In described coal water slurry, the content of each component is as follows: coal 65%～68%, water 31%～34%, medicament 1%;
Described medicament is comprised of dispersion agent and stablizer, and its ratio is 1: 2.
4. coal water slurry according to claim 3, is characterized in that, described mixing coal mixed weight ratio is 3 (fat coals): 2 (common coals).
5. coal water slurry according to claim 4, is characterized in that, described viscosity in aqueous coal slurries is less than or equal to 1200mPas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410490999.2A CN104194849A (en) | 2014-09-24 | 2014-09-24 | Preparation technology of coal water slurry and coal water slurry |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410490999.2A CN104194849A (en) | 2014-09-24 | 2014-09-24 | Preparation technology of coal water slurry and coal water slurry |
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| CN104194849A true CN104194849A (en) | 2014-12-10 |
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| CN201410490999.2A Pending CN104194849A (en) | 2014-09-24 | 2014-09-24 | Preparation technology of coal water slurry and coal water slurry |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542888A (en) * | 2015-12-21 | 2016-05-04 | 浙江煤科清洁能源有限公司 | Coal water slurry preparation method |
Citations (4)
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|---|---|---|---|---|
| CN1062754A (en) * | 1990-12-21 | 1992-07-15 | 日本科姆株式会社 | The preparation method of high-concentration coal-water slurry |
| CN1275610A (en) * | 1999-05-28 | 2000-12-06 | 中国石油化工集团公司 | Refinery coke modified low-grade coal-water slurry mixture and use thereof |
| CN101225334A (en) * | 2008-01-31 | 2008-07-23 | 王平 | Water coal coke slurry and preparation technology thereof |
| CN102181314A (en) * | 2011-04-08 | 2011-09-14 | 东南大学 | Waste water coal coke slurry and preparation method thereof |
-
2014
- 2014-09-24 CN CN201410490999.2A patent/CN104194849A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062754A (en) * | 1990-12-21 | 1992-07-15 | 日本科姆株式会社 | The preparation method of high-concentration coal-water slurry |
| CN1275610A (en) * | 1999-05-28 | 2000-12-06 | 中国石油化工集团公司 | Refinery coke modified low-grade coal-water slurry mixture and use thereof |
| CN101225334A (en) * | 2008-01-31 | 2008-07-23 | 王平 | Water coal coke slurry and preparation technology thereof |
| CN102181314A (en) * | 2011-04-08 | 2011-09-14 | 东南大学 | Waste water coal coke slurry and preparation method thereof |
Non-Patent Citations (1)
| Title |
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| 汤永新 等: "配煤对煤灰熔点和水煤浆性能影响的研究", 《煤炭技术》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105542888A (en) * | 2015-12-21 | 2016-05-04 | 浙江煤科清洁能源有限公司 | Coal water slurry preparation method |
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Application publication date: 20141210 |
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| RJ01 | Rejection of invention patent application after publication |