CN107418642A - The method for preparing moulded coal - Google Patents
The method for preparing moulded coal Download PDFInfo
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- CN107418642A CN107418642A CN201710359038.1A CN201710359038A CN107418642A CN 107418642 A CN107418642 A CN 107418642A CN 201710359038 A CN201710359038 A CN 201710359038A CN 107418642 A CN107418642 A CN 107418642A
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- powder
- semi
- coal
- moulded coal
- calcium lime
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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
-
- 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
- C10L5/06—Methods of shaping, e.g. pelletizing or briquetting
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention discloses the method for preparing moulded coal, including：Semicoke is crushed, to obtain semi-coke powder；Quick lime is crushed, to obtain calcium lime powder；The semi-coke powder, the calcium lime powder, red mud and vinasse are mixed, to obtain mixed material；The mixed material is subjected to forming processes, to obtain moulded coal.The briquette prod of high-quality is prepared in the semicoke that this method can utilize low-order coal to be pyrolyzed to obtain, and effectively solves the problems, such as that a large amount of semicokes are difficult by caused by traditional low order pyrolytic process of coal.
Description
Technical field
The present invention relates to derived energy chemical field, and specifically, the present invention relates to the method for preparing moulded coal.
Background technology
In recent years, China city and Megapolis atmosphere pollution are on the rise, Jing-jin-ji region, the Yangtze River Delta and Pearl River Delta area
Haze weather frequently occur.One of its major reason, be exactly with periphery it is coal fire discharged based on SO2(invisible, be pungent gas
Taste) sulfate (visible, the composition of haze) is converted into overnight.For a long time, Chinese coal account for the energy composition 75% with
On.80% in coal resources in China consumption is used to directly burn, and Chinese city is discharged into more than 70% of the flue dust in air
And SO2The 90% of total amount is directed to fire coal, and a large amount of coals are directly burnt into for atmosphere pollution major source.Therefore,
Research and development, popularization and application clear energy sources, be related to environmental protection, air quality improves and it is national can be thousand of healthy living
The matter of fundamental importance.
Moulded coal is the proportioning as required by particular use using fine coal as primary raw material, mechanical strength, and shape size is through machine
Tool processing is compressing, with the coal finished product that some strength and size and shape are different.Common moulded coal has briquet, honeycomb briquette
With coal briquette etc..Moulded coal has higher efficiency of combustion, lower environmental pollution relative to fine coal, and the utilization of moulded coal can expand thin
The application of the high volatile component weak viscosity knot coal such as coal, bottle coal, jet coal and lignite.
However, the existing method for preparing moulded coal still has much room for improvement.
The content of the invention
It is contemplated that at least solves one of technical problem in correlation technique to a certain extent.Therefore, the present invention
One purpose is the method that proposition prepares moulded coal.Gao Pin is prepared in the semicoke that this method can utilize low-order coal to be pyrolyzed to obtain
The briquette prod of matter, effectively solve the problems, such as that a large amount of semicokes are difficult by caused by traditional low order pyrolytic process of coal.
In one aspect of the invention, the present invention proposes a kind of method for preparing moulded coal.According to an embodiment of the invention,
This method includes：Semicoke is crushed, to obtain semi-coke powder；Quick lime is crushed, to obtain calcium lime powder；Will
The semi-coke powder, the calcium lime powder, red mud and vinasse are mixed, to obtain mixed material；The mixed material is entered
Row forming processes, to obtain moulded coal.
Thus, the method for preparing moulded coal according to embodiments of the present invention is broken by the way that semicoke and calcium lime powder are not carried out
Mixed to semi-coke powder and calcium lime powder, and by semi-coke powder, calcium lime powder with red mud and vinasse, so as to obtained mixture
Material, and then mixed material is subjected to forming processes, you can obtain briquette prod.This method using low-order coal be pyrolyzed obtained semicoke as
Raw material prepares moulded coal, can effectively solve the problems, such as that a large amount of semicokes are difficult by caused by traditional low order pyrolytic process of coal.
In addition, the method according to the above embodiment of the present invention for preparing moulded coal can also have technology additional as follows special
Sign：
In some embodiments of the invention, the average grain diameter of the semi-coke powder is not higher than 3mm.Thus, it is possible to further
Improve the quality for the briquette prod being prepared.
In some embodiments of the invention, the average grain diameter of the calcium lime powder is not higher than 1mm, and the calcium lime powder
Content of powder of the middle particle diameter between 75~150 μm accounts for 60~70wt%.Thus, it is possible to further improve the moulded coal being prepared
The quality of product.
In some embodiments of the invention, the water content of the red mud is 15~30wt%.Thus, it is possible to further carry
The quality for the briquette prod that height is prepared.
In some embodiments of the invention, the water content of the vinasse is not higher than 1wt%.Thus, it is possible to further carry
The quality for the briquette prod that height is prepared.
In some embodiments of the invention, the semi-coke powder, the calcium lime powder, the red mud and the vinasse are pressed
According to mass ratio 1:(0.03~0.1):(0.03~0.15):(0.02~0.06) 3~10min is mixed.Thus, it is possible to further carry
The quality for the briquette prod that height is prepared.
In some embodiments of the invention, the forming processes are carried out using roller briquetting machine.
In some embodiments of the invention, the forming processes are completed under 14~20MPa.Thus, it is possible to enter
One step improves the quality for the briquette prod being prepared.
In some embodiments of the invention, the method for preparing moulded coal further comprises：The moulded coal is used to send out
Electricity.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the method flow schematic diagram according to an embodiment of the invention for preparing moulded coal；
Fig. 2 is the method flow schematic diagram for preparing moulded coal according to further embodiment of the present invention.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, it is intended to for explaining the present invention, and is not considered as limiting the invention.
In one aspect of the invention, the present invention proposes a kind of method for preparing moulded coal.According to an embodiment of the invention,
This method includes：Semicoke is crushed, to obtain semi-coke powder；Quick lime is crushed, to obtain calcium lime powder；Will
Semi-coke powder, calcium lime powder, red mud and vinasse are mixed, to obtain mixed material；Mixed material is subjected to forming processes, with
Just moulded coal is obtained.
The method for preparing semicoke according to embodiments of the present invention is described in detail below with reference to Fig. 1 and Fig. 2.According to this
The embodiment of invention, this method include：
S100：Broken semicoke
In the step, semicoke is crushed, to obtain semi-coke powder.Specifically, semicoke is traditional low order pyrolysis of coal work
The product obtained in skill, its phosphorus content is high, is widely used in the fields such as metallurgy, but semicoke shaping is always global problem, existing
Some forming methods can not ensure the intensity of shaped article, and the method for the present invention solves the problems, such as that semicoke is difficult to shaping, and
The briquette prod of high-quality is prepared using semicoke, so as to solve the problems, such as that semicoke bulk deposition is difficult to effectively utilize.
According to an embodiment of the invention, the particle diameter of semi-coke powder is not particularly restricted, and those skilled in the art can basis
It is actually needed and is selected, according to a particular embodiment of the invention, the average grain diameter of semi-coke powder can be not higher than 3mm.Inventor
It was found that by using the broken acquisition less semi-coke powder of particle diameter, the molding effect of semicoke can be significantly improved, so as to further carry
The quality for the briquette prod that height is prepared.
S200：Broken quick lime
In the step, quick lime is crushed, to obtain calcium lime powder.Specifically, quick lime has the work of solid sulphur
With, by using quick lime as additive, noxious gas emission of the moulded coal being prepared in burning can be significantly reduced,
The load of follow-up desulphurization denitration is reduced, so as to reduce production cost.
According to an embodiment of the invention, the particle diameter of calcium lime powder is not particularly restricted, and those skilled in the art can root
Selected according to being actually needed, according to a particular embodiment of the invention, the average grain diameter of calcium lime powder can be not higher than 1mm, and
Content of powder of the particle diameter between 75~150 μm accounts for 60~70wt% in calcium lime powder.Inventor has found, by using above-mentioned grain
The calcium lime powder in footpath, can further improve the captured sulfur result of calcium lime powder, so as to further reduce pernicious gas discharge and
Production cost.
S300：Batch mixing
In the step, semi-coke powder, calcium lime powder, red mud and vinasse are mixed, to obtain mixed material.Specifically
Ground, red mud may be used as binding agent, and red mud is the micro- waste obtained in aluminium industry, and main component is aragonite and calcite,
Content is 60~65wt%, next to that opal, gibbsite, goethite, content it is minimum be titanium ore, it is siderite, natural
Alkali, waterglass, sodium aluminate and caustic soda.In these compositions, aragonite, calcite and siderite are both skeleton, there is certain glue again
Knot acts on；And goethite, gibbsite, opal, waterglass play cementation and filling effect.Thus using red mud as semicoke
Powder binding agent, the intensity of semi-coke powder briquette prod was on the one hand both ensure that, ensure that in transportation and do not break up, at the same it is again sharp
With consuming part red mud.On the other hand, vinasse can be used as additive, and vinasse are fibre structure, can as shaped coal additive
To drastically increase the compression strength of briquette prod and tensile strength, and volatile matter content is big simultaneously for vinasse, Ke Yiti
The caloric value of high briquette prod, so as to further improve the economic benefit of briquette prod.
According to a particular embodiment of the invention, the water content of red mud should be controlled in 15~30wt%.Inventor's discovery, if
Red mud water content is too high, it will and cause in the briquette prod that is prepared that water content is too high, influence product quality, and if red mud
Water content is too low, then caking property can be caused to reduce, influence molding effect.
According to a particular embodiment of the invention, the water content of vinasse should be controlled not higher than 1wt%, specifically, can be incited somebody to action
Vinasse are dried at 80 degrees celsius, to control the water content of vinasse to control not higher than 1wt%, thus, it is possible to enter one
Step improves the quality for the briquette prod being prepared.
According to an embodiment of the invention, the proportioning of semi-coke powder, calcium lime powder, red mud and vinasse is not particularly restricted, this
Art personnel can be selected according to being actually needed, according to a particular embodiment of the invention, can be by semi-coke powder, raw stone
Ashes, red mud and vinasse are according to mass ratio 1:(0.03~0.1):(0.03~0.15):(0.02~0.06) is mixed, by
This, can make mixed material have good molding effect while ensureing that calcium lime powder effectively plays sulfur fixation, so as to
Further improve the quality for the briquette prod being prepared.It is possible to further mixed material is thoroughly mixed 3~
10min, to improve mixed effect.In addition, use the briquette prod entirety water content that said ratio is prepared 5wt% with
It is interior, the moisture requirement of coal for power generation can be met completely, the moulded coal that method of the invention is prepared can be without drying, directly
For generating electricity, so as to further reduce production cost.
S400：Forming processes
In the step, mixed material is subjected to forming processes, to obtain moulded coal.
According to an embodiment of the invention, roller briquetting machine can be used to carry out forming processes, thus, it is possible to further improve
The quality for the briquette prod being prepared.
According to an embodiment of the invention, the condition of forming processes is not particularly restricted, and those skilled in the art can root
Selected according to being actually needed, according to a particular embodiment of the invention, forming processes can be completed under 14~20MPa, thus,
The quality for the briquette prod being prepared can further be improved.
With reference to figure 2, the method for preparing moulded coal according to embodiments of the present invention further comprises：
S500：Generate electricity
In the step, the briquette prod being prepared is used to generate electricity.Specifically, due to moulded coal that this method is prepared
Product entirety water content can meet the moisture requirement of coal for power generation completely within 5wt%, can directly be used without drying
In generating, so as to further reduce production cost.
Thus, the method for preparing moulded coal according to embodiments of the present invention is broken by the way that semicoke and calcium lime powder are not carried out
Mixed to semi-coke powder and calcium lime powder, and by semi-coke powder, calcium lime powder with red mud and vinasse, so as to obtained mixture
Material, wherein calcium lime powder have sulfur fixation, and red mud can be used as binding agent to improve molding effect, and vinasse can be used as addition
Agent is to improve product resistance to compression, tensile strength；And then mixed material is subjected to forming processes, you can obtain briquette prod.The party
The semicoke that method is pyrolyzed to obtain using low-order coal prepares moulded coal as raw material, can effectively solve big caused by traditional low order pyrolytic process of coal
The problem of amount semicoke is difficult by, and the moulded coal that the method for the present invention is prepared fixes carbon content height, and compression strength is high, contains
Water is low, can meet the requirement of moulded coal downstream industry completely.
Below with reference to specific embodiment, present invention is described, it is necessary to which explanation, these embodiments are only to describe
Property, without limiting the invention in any way.
Embodiment 1
Semi-coke powder principal character：Below average grain diameter 3mm, fixed carbon content 67wt%；
Calcium lime powder principal character：Calcium oxide content 90wt%, below average grain diameter 1mm, addition 0.5wt%；
Red mud：0.088~0.25mm of average grain diameter, moisture 20wt%, addition 8wt%；
Vinasse：Moisture 0.8wt%, addition 2wt%；
On the basis of semi-coke powder, 1000g semi-coke powders, 5g calcium lime powders, 80g red muds, 20g vinasse, by semi-coke powder, life are weighed
Pulverized limestone, red mud, vinasse are fitted into batch mixer jointly, mix 5 minutes, and compound is loaded into roller briquetting machine preload screw storehouse
In, then it is molded；Obtained shaping ball compression strength 205N/ balls, drop strength 89% (more than 5mm), balling ratio 91%,
Put after drying in atmosphere, shaping ball intensity has reached 301N/ balls, type ball calorific value reached 6000 kilocalories/kilogram.
Embodiment 2
Semi-coke powder principal character：Below average grain diameter 3mm, fixed carbon content 67wt%；
Calcium lime powder principal character：Calcium oxide content 90wt%, below average grain diameter 1mm, addition 0.5wt%；
Red mud：0.088~0.25mm of average grain diameter, moisture 20wt%, addition 8wt%；
Vinasse：Moisture 0.8wt%, addition 4wt%；
On the basis of semi-coke powder, 1000g semi-coke powders, 5g calcium lime powders, 80g red muds, 40g vinasse, by semi-coke powder, life are weighed
Pulverized limestone, red mud, vinasse are fitted into batch mixer jointly, mix 5 minutes, and compound is loaded into roller briquetting machine preload screw storehouse
In, then it is molded；Obtained shaping ball compression strength 220N/ balls, drop strength 93% (more than 5mm), balling ratio 91%,
Put after drying in atmosphere, shaping ball intensity has reached 360N/ balls, type ball calorific value reached 6260 kilocalories/kilogram.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or the spy for combining the embodiment or example description
Point is contained at least one embodiment or example of the present invention.In this manual, to the schematic representation of above-mentioned term not
Identical embodiment or example must be directed to.Moreover, specific features, structure, material or the feature of description can be with office
Combined in an appropriate manner in one or more embodiments or example.In addition, in the case of not conflicting, the skill of this area
Art personnel can be tied the different embodiments or example and the feature of different embodiments or example described in this specification
Close and combine.
Although embodiments of the invention have been shown and described above, it is to be understood that above-described embodiment is example
Property, it is impossible to limitation of the present invention is interpreted as, one of ordinary skill in the art within the scope of the invention can be to above-mentioned
Embodiment is changed, changed, replacing and modification.
Claims (9)
- A kind of 1. method for preparing moulded coal, it is characterised in that including：Semicoke is crushed, to obtain semi-coke powder；Quick lime is crushed, to obtain calcium lime powder；The semi-coke powder, the calcium lime powder, red mud and vinasse are mixed, to obtain mixed material；The mixed material is subjected to forming processes, to obtain moulded coal.
- 2. according to the method for claim 1, it is characterised in that the average grain diameter of the semi-coke powder is not higher than 3mm.
- 3. according to the method for claim 1, it is characterised in that the average grain diameter of the calcium lime powder is not higher than 1mm, and institute State content of powder of the particle diameter between 75~150 μm in calcium lime powder and account for 60~70wt%.
- 4. according to the method for claim 1, it is characterised in that the water content of the red mud is 15~30wt%.
- 5. according to the method for claim 4, it is characterised in that the water content of the vinasse is not higher than 1wt%.
- 6. according to the method for claim 1, it is characterised in that by the semi-coke powder, the calcium lime powder, the red mud and The vinasse are according to mass ratio 1:(0.03~0.1):(0.03~0.15):(0.02~0.06) 3~10min is mixed.
- 7. according to the method for claim 1, it is characterised in that the forming processes are carried out using roller briquetting machine.
- 8. according to the method for claim 7, it is characterised in that the forming processes are completed under 14~20MPa.
- 9. according to the method for claim 1, it is characterised in that further comprise：The moulded coal is used to generate electricity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710359038.1A CN107418642A (en) | 2017-05-19 | 2017-05-19 | The method for preparing moulded coal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710359038.1A CN107418642A (en) | 2017-05-19 | 2017-05-19 | The method for preparing moulded coal |
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| CN107418642A true CN107418642A (en) | 2017-12-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110804475A (en) * | 2019-11-06 | 2020-02-18 | 郑传保 | Environment-friendly honeycomb carbon and production method thereof |
-
2017
- 2017-05-19 CN CN201710359038.1A patent/CN107418642A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110804475A (en) * | 2019-11-06 | 2020-02-18 | 郑传保 | Environment-friendly honeycomb carbon and production method thereof |
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