CN108728198A - A kind of production method of cleaning lump coal - Google Patents
A kind of production method of cleaning lump coal Download PDFInfo
- Publication number
- CN108728198A CN108728198A CN201810415947.7A CN201810415947A CN108728198A CN 108728198 A CN108728198 A CN 108728198A CN 201810415947 A CN201810415947 A CN 201810415947A CN 108728198 A CN108728198 A CN 108728198A
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- Prior art keywords
- lump coal
- clean
- production method
- sulphur
- hydrofuge
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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
- C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
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- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The present invention relates to clean lump coal technical fields, provide a kind of production method of clean lump coal, including：By sulphur-fixing agent, dust suppressant and water by weight 6~9:2~4:100 are mixed and stirred for 30 minutes, and solid sulphur dust suppression liquid is made；Then screening classification is carried out to lump coal；Solid sulphur dust suppression liquid is sprayed on lump coal after sorting later；Last hydrofuge obtains clean lump coal.Whereby, the present invention is by first classifying lump coal, and solid sulphur dust suppression liquid is then sprayed on lump coal after sorting, and carrying out hydrofuge again obtains clean lump coal later.Present invention process is simple, and production cost is low, and speed of production is fast, production process environmental protection.The sulphur volatile quantity of the clean lump coal of production is reduced more than 15%, and calorific value is up to 6500~7000 kilocalories.The degree of recognition in market is high, reduces the popularization difficulty of environment-protecting coal.
Description
Technical field
The present invention relates to clean lump coal technical field more particularly to a kind of production methods of clean lump coal.
Background technology
As environmental requirement is increasingly stringenter, more and more environment-friendly coals substitute lump coal on commercial market.Environment-friendly type at present
The production technology of coal is：Anthracite pulverizer is smashed into conny, coal slime is added and adhesive is pressed into spherical with ball press, lead to
Drying machine drying, drying are crossed, packaging becomes finished product.Technique is cumbersome, and the production cycle is long, and production cost is high.And due to using foam
Coal produces, and calorific value is only 5200~6000 kilocalories, occurs burning the problems such as not hot using process, significantly increases market and push away
Wide difficulty.
In summary, the existing technology has inconveniences and defects in actual use, so it is necessary to be improved.
Invention content
For above-mentioned defect, the purpose of the present invention is to provide a kind of production methods of clean lump coal, by first by block
Coal is classified, and solid sulphur dust suppression liquid is then sprayed on lump coal after sorting, and carrying out hydrofuge again obtains clean lump coal later.Present invention process
Simply, production cost is low, and speed of production is fast, production process environmental protection.The sulphur volatile quantity of the clean lump coal of production is reduced more than 15%,
Calorific value is up to 6500~7000 kilocalories.The degree of recognition in market is high, reduces the popularization difficulty of environment-protecting coal.
To achieve the goals above, the present invention provides a kind of production method of clean lump coal, includes the following steps：
The first step prepares solid sulphur dust suppression liquid
By sulphur-fixing agent, dust suppressant and water by weight 6~9:2~4:100 are mixed and stirred for 30 minutes, obtain the solid sulphur suppression
Dirt liquid；
Second step lump coal is classified
Lump coal is selected 2~5cm, 3~6cm and 4~8cm, tri- kinds of specifications by sub-sieve device and is sent respectively to closing conveyer belt；
Third step spray
The lump coal of sorted each specification sprays the solid sulphur dust suppression respectively during being transmitted on closing conveyer belt
Liquid；Gu sulphur dust suppression liquid spray flux is the 5~7% of lump coal weight, spray time is 3~5 seconds；
4th step hydrofuge
Lump coal obtains the clean lump coal after spray after removing extra moisture.
The production method of cleaning lump coal according to the present invention, the group of the dust suppressant become：Polyvinyl alcohol, urea, the third three
Alcohol, ethylene glycol and surfactant；The mass ratio of each ingredient is 0.10~3.50:0.05~1.50:0.10~1.50:0.10~
1.50:0.05~1.00.
The production method of cleaning lump coal according to the present invention, the sulphur-fixing agent are sodium hydroxide.
The production method of cleaning lump coal according to the present invention, the lump coal are washed after spray, are then first carried out
1~2 minute centrifugation hydrofuge, carries out 10~15 minutes wind-force hydrofuges again later.
The centrifuge speed of the production method of cleaning lump coal according to the present invention, the centrifugation hydrofuge is 5000r/min.
The production method of cleaning lump coal according to the present invention, the lump coal carry out 10~15 minutes wind after spray
Power hydrofuge.
The production method of cleaning lump coal according to the present invention, the air supply mode of the wind-force hydrofuge are blown for wave.
The purpose of the present invention is to provide a kind of production methods of clean lump coal then to be divided by the way that first lump coal is classified
Solid sulphur dust suppression liquid is sprayed on lump coal after class, and carrying out hydrofuge again obtains clean lump coal later.Present invention process is simple, and production cost is low,
Speed of production is fast, production process environmental protection.The sulphur volatile quantity of the clean lump coal of production is reduced more than 15%, calorific value up to 6500~
7000 kilocalories.The degree of recognition in market is high, reduces the popularization difficulty of environment-protecting coal.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
The present invention provides a kind of production methods of clean lump coal, include the following steps：
The first step prepares solid sulphur dust suppression liquid
By sulphur-fixing agent, dust suppressant and water by weight 6~9:2~4:100 are mixed and stirred for 30 minutes, obtain the solid sulphur suppression
Dirt liquid；
Second step lump coal is classified
Lump coal is selected 2~5cm, 3~6cm and 4~8cm, tri- kinds of specifications by sub-sieve device and is sent respectively to closing conveyer belt；
The lump coal that present invention selection volatilization is divided into 8~14% is classified.
Third step spray
The lump coal of sorted each specification sprays the solid sulphur dust suppression respectively during being transmitted on closing conveyer belt
Liquid；Gu sulphur dust suppression liquid spray flux is the 5~7% of lump coal weight, spray time is 3~5 seconds；
Sulphur-fixing agent selects alkali compounds, such as sodium hydroxide, potassium hydroxide, calcium hydroxide or magnesia.The present invention is excellent
Select sodium hydroxide as sulphur-fixing agent.Gu after on sulphur dust suppression liquid spray to coal cinder, sulphur-fixing agent reacts with coal sulphur in the block to be reached
The effect of sulphur removal.Reaction equation is as follows by taking sodium hydroxide as an example：4NaOH+3S=SO2+2Na2S+2H2O。
Gu the coal dust generated during sub-sieve and nuts are bonded on lump coal by the dust suppressant in sulphur dust suppression liquid.The present invention
The group of dust suppressant become：Polyvinyl alcohol, urea, glycerine, ethylene glycol and surfactant；Its mass ratio be 0.10~
3.50:0.05~1.50:0.10~1.50:0.10~1.50:0.05~1.00.
The dust suppression agent prescription is nontoxic, harmless, non-corrosive and of low cost, safe and environment-friendly.When being sprayed at lump coal surface,
Hard shell continuous and with some strength can be formed on surface, dust is closed in hard shell in the following, to reach dust-proof purpose.
4th step hydrofuge
Lump coal obtains the clean lump coal after spray after removing extra moisture.
The present invention coal cinder classification, spray, hydrofuge process carried out under sealing condition and produce terminal setting dust suction and
Emission-control equipment avoids production process from causing secondary pollution.
Embodiment one
Lump coal is washed after spray, is then first carried out 1~2 minute centrifugation hydrofuge, is carried out 10~15 points again later
The wind-force hydrofuge of clock.
Preferably, the centrifuge speed of the centrifugation hydrofuge of the invention is 5000r/min；
Embodiment two
In water-deficient area, due to of high cost with water, lump coal can directly carry out 10~15 minutes after spray
Wind-force hydrofuge.
Coal cinder rolls during to avoid wind-force hydrofuge, it is preferred that the air-supply side of the wind-force hydrofuge of the invention
Formula is blown using wave.
Simple for process due to the present invention, compared with prior art, production cost reduces 65%, and production equipment is thrown
Money reduces 40%, and the airborne dust in production process reduces 55%.The sulphur of the clean lump coal of method production using the present invention is waved
Hair amount is reduced more than 15%, and calorific value is up to 6500~7000 kilocalories.
In conclusion the purpose of the present invention is to provide a kind of production methods of clean lump coal, by the way that first lump coal is classified,
Then solid sulphur dust suppression liquid is sprayed on lump coal after sorting, and carrying out hydrofuge again obtains clean lump coal later.Present invention process is simple, raw
Produce at low cost, speed of production is fast, production process environmental protection.The sulphur volatile quantity of the clean lump coal of production is reduced more than 15%, calorific value
Up to 6500~7000 kilocalories.The degree of recognition in market is high, reduces the popularization difficulty of environment-protecting coal.
Certainly, the present invention can also have other various embodiments, without deviating from the spirit and substance of the present invention, ripe
It knows those skilled in the art and makes various corresponding change and deformations, but these corresponding changes and change in accordance with the present invention
Shape should all belong to the protection domain of appended claims of the invention.
Claims (7)
1. a kind of production method of cleaning lump coal, which is characterized in that include the following steps：
The first step prepares solid sulphur dust suppression liquid
By sulphur-fixing agent, dust suppressant and water by weight 6~9:2~4:100 are mixed and stirred for 30 minutes, obtain the solid sulphur dust suppression
Liquid；
Second step lump coal is classified
Lump coal is selected 2~5cm, 3~6cm and 4~8cm, tri- kinds of specifications by sub-sieve device and is sent respectively to closing conveyer belt；
Third step spray
The lump coal of sorted each specification sprays the solid sulphur dust suppression liquid respectively during being transmitted on closing conveyer belt；Gu
Sulphur dust suppression liquid spray flux is the 5~7% of lump coal weight, and spray time is 3~5 seconds；
4th step hydrofuge
Lump coal obtains the clean lump coal after spray after removing extra moisture.
2. a kind of production method of clean lump coal according to claim 1, which is characterized in that the composition of the dust suppressant
For：Polyvinyl alcohol, urea, glycerine, ethylene glycol and surfactant；The mass ratio of each ingredient is 0.10~3.50:0.05~
1.50:0.10~1.50:0.10~1.50:0.05~1.00.
3. a kind of production method of clean lump coal according to claim 1, which is characterized in that the sulphur-fixing agent is hydroxide
Sodium.
4. a kind of production method of clean lump coal according to claim 1, which is characterized in that the lump coal is by spray
Afterwards, it is washed, then first carries out 1~2 minute centrifugation hydrofuge, carry out 10~15 minutes wind-force hydrofuges again later.
5. a kind of production method of clean lump coal according to claim 4, which is characterized in that the centrifugation of the centrifugation hydrofuge
Machine rotating speed is 5000r/min.
6. a kind of production method of clean lump coal according to claim 1, which is characterized in that the lump coal is by spray
Afterwards, 10~15 minutes wind-force hydrofuges are carried out.
7. a kind of production method of clean lump coal according to claim 4~6 any one, which is characterized in that the wind
The air supply mode of power hydrofuge is blown for wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810415947.7A CN108728198A (en) | 2018-05-03 | 2018-05-03 | A kind of production method of cleaning lump coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810415947.7A CN108728198A (en) | 2018-05-03 | 2018-05-03 | A kind of production method of cleaning lump coal |
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| Publication Number | Publication Date |
|---|---|
| CN108728198A true CN108728198A (en) | 2018-11-02 |
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ID=63936996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810415947.7A Pending CN108728198A (en) | 2018-05-03 | 2018-05-03 | A kind of production method of cleaning lump coal |
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| Country | Link |
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| CN (1) | CN108728198A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263933A (en) * | 2000-02-03 | 2000-08-23 | 王茂春 | Equipment and process for producing clean coal series |
| CN101899283A (en) * | 2009-05-26 | 2010-12-01 | 世纪汉元(北京)科技有限公司 | Method for preparing dust suppressant for coal dust transportation, loading and unloading |
-
2018
- 2018-05-03 CN CN201810415947.7A patent/CN108728198A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1263933A (en) * | 2000-02-03 | 2000-08-23 | 王茂春 | Equipment and process for producing clean coal series |
| CN101899283A (en) * | 2009-05-26 | 2010-12-01 | 世纪汉元(北京)科技有限公司 | Method for preparing dust suppressant for coal dust transportation, loading and unloading |
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Application publication date: 20181102 |