CN106833802A - A kind of coal dust formula with excellent combustibility and preparation method thereof - Google Patents

A kind of coal dust formula with excellent combustibility and preparation method thereof Download PDF

Info

Publication number
CN106833802A
CN106833802A CN201710122023.3A CN201710122023A CN106833802A CN 106833802 A CN106833802 A CN 106833802A CN 201710122023 A CN201710122023 A CN 201710122023A CN 106833802 A CN106833802 A CN 106833802A
Authority
CN
China
Prior art keywords
coal dust
coal
elements
sea salt
excellent combustibility
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201710122023.3A
Other languages
Chinese (zh)
Inventor
朱宝忠
王启昌
孙运兰
堵同宽
孙华建
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Anhui University of Technology AHUT
Original Assignee
Anhui University of Technology AHUT
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Anhui University of Technology AHUT filed Critical Anhui University of Technology AHUT
Priority to CN201710122023.3A priority Critical patent/CN106833802A/en
Publication of CN106833802A publication Critical patent/CN106833802A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • C10L9/10—Treating solid fuels to improve their combustion by using additives
    • 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
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • 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
    • C10L2200/00—Components of fuel compositions
    • C10L2200/02—Inorganic or organic compounds containing atoms other than C, H or O, e.g. organic compounds containing heteroatoms or metal organic complexes
    • C10L2200/029—Salts, such as carbonates, oxides, hydroxides, percompounds, e.g. peroxides, perborates, nitrates, nitrites, sulfates, and silicates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)

Abstract

The invention discloses a kind of coal dust formula with excellent combustibility and preparation method thereof, belong to coal powder burning technology field.Coal dust of the invention is raw coal fine ore stone by after coal pulverizer attrition grinding, 74 μm of pulverized coal particle being less than with the particle diameter obtained after the sieved through sieve that mesh number is 200 mesh；Described sea salt contains Cl elements, Na elements, S elements, F elements, Mg elements, Ca elements, Al elements；Coal dust is mixed according to a certain percentage with sea salt, deionized water is added, 1~2h is stirred to mixed solution using magnetic stirring apparatus, after being sufficiently mixed, be put into drying in baking oven, it is 100~110 DEG C to set oven temperature, is taken out after 2~3h and obtains required coal dust.Combustion Efficiency of Coal Powder can be effectively improved using technical scheme, while reducing NOxAnd SO2The discharge of pollutant, and its technical recipe is simple, low cost is conducive to commercial introduction application.

Description

A kind of coal dust formula with excellent combustibility and preparation method thereof
Technical field
The invention belongs to coal powder burning technology field, more specifically to a kind of coal dust with excellent combustibility Formula and preparation method thereof.
Background technology
The basic characteristics of Natural Resources in China are rich coal, oil-poor, few gas, and this just determines that coal can not in primary energy Or scarce critical role.The reserves of coal in China account for the 11.60% of world saving, and coal resources total amount is 5.6 trillion tons, wherein Proved reserves are 1,000,000,000,000 tons, and up to the present, China is coal production state and country of consumption maximum in the world.Reform and opening-up Three during the last ten years, and in the quick emergence, the fast development process of industry in China's industry, coal is served as the main energy Very important effect.
However, the Utilization prospects of coal resources are but rather troubling.From from the aspect of exploitation, coal resources in China is in exploitation Difference in scale, coal-mining method, technical equipment so that the recovery levels of coal resources differ greatly, and production technique falls Small-size coal mine quantity afterwards is larger so that the technology level of China is integrally relatively low.Some enterprises are complete using once adopting Method high, only adopts middle one layer, and top ground coal goes out of use, and adopts one and loses four；Some small size coal enterprise coal-mining methods fall behind, to coal The rate of extraction of charcoal have even less than 30%, cause the significant wastage of resource.From in terms of use, the pollution of coal combustion generation The problem of environmental pollution that thing NOx etc. is caused is also increasingly severe, seriously threatens the health of the mankind, be mainly shown as acid rain and Photochemical fog, has highly impacted the life and development of the mankind.
Therefore, Combustion Efficiency of Coal Powder, reduction burning pollutant discharge is improved to be even more important for the utilization of China's coal resource. The efficiency of combustion of coal dust is improved in the prior art, the means for reducing Air-pollution From Combustion have a lot, such as the type of change burner, but this Kind of method needs to transform existing equipment, consuming cost and influences production, and complex operation is unsuitable for commercial Application. The application of coal dust additive is on the premise of coal-burning facility is not changed, according to the chemical principle of coal combustion, with addition The method of a small amount of additive improves the combustibility of coal dust, reaches the mesh for improving Combustion Efficiency of Coal Powder and reducing pollutant load 's.In recent years, domestic Many researchers start influence of the widely studied addition various additives to coal powder performance, and obtain Certain achievement.
Such as, Chinese Patent Application No. is that 201110100569.1 application case discloses a kind of coal burning Modified catalytic and adds Plus agent, the coal combustion modified catalysis additive of this application case is by nitric acid rare earth 10-15%, copper and its compound 10-15%, iron And its compound 8-10%, magnesium and its compound 35-52% and inorganic salts 20-25% composition, its inorganic salts used be potassium nitrate, One kind in sodium nitrate or two kinds.Coal dust can be improved to a certain extent by the additive that this application case is added in coal dust Efficiency of combustion, be advantageously implemented the effect of emission reduction of economizing on coal.
And for example, Chinese Patent Application No. is that 200910231034.0 application case discloses a kind of additive for fire coal and its system Preparation Method, the quality group of the additive for fire coal of this application case turns into：5~13 parts of cinder modifying agent, 6~19 parts of combustion adjuvant, solid sulphur 10~25 parts of agent, 4~10 parts of catalyst；Wherein, the cinder modifying agent is made up of magnesium chloride and sodium sulphate, the combustion adjuvant by Potassium nitrate, potassium permanganate and sodium chlorate composition, the sulphur-fixing agent is made up of monoethanolamine, isopropanolamine and calcium hydroxide, described to urge Agent is cerous nitrate.This application case is arranged by the cooperation of various ingredients so as to having catalytic combustion-supporting concurrently simultaneously, reducing pollutant The triple role of equipment cleaning is put and keeps, and the addition of additive is relatively fewer.
But the component formula of existing coal dust firing additive is mostly relative complex, relatively costly, and it is to coal dust firing The improvement of performance still needs further raising.
The content of the invention
1. the invention technical problem to be solved
It is an object of the invention to overcome, the component formula of existing coal dust additive is relative complex, high cost, and coal dust Combustibility needs the deficiency of further raising, there is provided a kind of with the coal dust formula of excellent combustibility and its preparation side Method.Combustion Efficiency of Coal Powder can be effectively improved using technical scheme, while reducing NOx and SO2The discharge of pollutant, And its technical recipe is simple, low cost is conducive to commercial introduction application.
2. technical scheme
To reach above-mentioned purpose, the technical scheme that the present invention is provided is：
A kind of coal dust formula with excellent combustibility of the invention, it is by adding a certain amount of sea in coal dust Salt is prepared from as additive, wherein, the mixing quality ratio of the sea salt and coal dust is 2:100~5:100.
Further, after described coal dust is by the raw coal size-reduced grinding of fine ore stone, the sieve that mesh number is 200 mesh is used Pulverized coal particle of the particle diameter obtained after mesh screen point less than 74 μm.
Further, described sea salt includes the chemical composition of following mass percent：Cl elements：50-55%；Na units Element：15-20%；S elements：＜ 3%；F elements：5-8；Mg elements：5-8；Ca elements：4-6；Al elements：＜ 3%
Further, described sea salt is to obtain or use commercially available sea salt after directly being processed through removal of impurities by seawater.
Further, the mixing quality ratio of the sea salt and coal dust is 4:100~5:100.
Further, the mixing quality ratio of the sea salt and coal dust is 4:100.
A kind of preparation method of coal dust with excellent combustibility of the invention, its step is：Described sea salt is molten In deionized water, mix according to mass ratio with coal dust after filtration treatment, then in being stirred mixed liquor under water bath condition Mix, be sufficiently mixed it, be subsequently placed at drying in baking oven, obtain final product coal dust of the invention.
Further, the temperature of the water-bath is 40~60 DEG C, and mixed liquor is stirred 1 under water bath condition~ 2h。
Further, the oven temperature is 100~110 DEG C, and the drying and processing time is 2~3h.
3. beneficial effect
The technical scheme provided using the present invention, compared with prior art, with following remarkable result：
(1) a kind of coal dust formula with excellent combustibility of the invention, is by adding certain content in coal dust Sea salt be prepared from as additive, such that it is able to effectively facilitate the precipitation of volatile matter and the burning of coal dust, make coal dust Burn-out temperature and maximum weightless temperature have shifted to an earlier date, and the ignition point of coal dust is also effectively reduced, and catalyst effect is bright It is aobvious.Meanwhile, the present invention can also substantially reduce conversion and SO of the fuel bound nitrogen to NO by the addition of sea salt2Discharge capacity, and subtract The generation time of short pollutant.
(2) a kind of coal dust formula with excellent combustibility of the invention, by selecting specific sea salt species, and will Sea salt is further optimized for 4 with the mixed proportion of coal dust:100~5:100, such that it is able to make the flammabilities such as the efficiency of combustion of coal dust Can improvement and the discharge capacity of coal dust firing pollutant between realize best fit, ensure significantly improve Combustion Efficiency of Coal Powder, On the basis of reducing its ignition point, with comprehensive optimal NOxWith SO2Removal effect.
(3) a kind of coal dust formula with excellent combustibility of the invention, its additive sea salt can enter by by seawater Obtained after the simple removal of impurities treatment of row, wide material sources are cheap, have wide practical use, while also can be used directly The sea salt of in the market.
(4) preparation method of a kind of coal dust with excellent combustibility of the invention, by specific to being added in coal dust The sea salt of ratio is prepared from, and its formula is constituted and preparation process is simple, and cost is relatively low, and can effectively improve the burning of coal dust Performance, reduces the discharge capacity of burning pollutant.
Brief description of the drawings
Fig. 1 is the ignition point variation relation figure of coal dust firing after sea salt is mixed with coal dust by different proportion in the present invention；
Fig. 2 is the SO of coal dust firing after sea salt is mixed with coal dust by different proportion2Accumulative discharge capacity graph of a relation；
Fig. 3 is the NO of coal dust firing after sea salt is mixed with coal dust by different proportionxAccumulative discharge capacity graph of a relation.
Specific embodiment
A kind of coal dust formula with excellent combustibility of the invention, it is by adding a certain amount of sea in coal dust Salt is prepared from as additive, wherein, described coal dust be by the raw coal size-reduced grinding of fine ore stone after, be using mesh number The mixing quality ratio of pulverized coal particle of the particle diameter obtained after the sieved through sieve of 200 mesh less than 74 μm, sea salt and coal dust is 2:100 ~5:100, more preferably 4:100~5:100, its optimum mixture ratio example is 4:100.Sea salt in the present invention is directly passed through by seawater Obtained after removal of impurities treatment, can also use commercially available sea salt, its chemical composition for mainly including following mass percent：Cl elements：50- 55%；Na elements：15-20%；S elements：＜ 3%；F elements：5-8；Mg elements：5-8；Ca elements：4-6；Al elements：＜ 3%
It is relatively poor for existing coal powder performance, the larger problem of the discharge capacity of its burning pollutant, studies in China Person expands lot of experiments, and has obtained the formula of many coal dust additives.Although using existing coal dust additive energy The efficiency of combustion of coal dust is improved to a certain extent, but its component formula and preparation technology are relative complex, it is relatively costly, and its is right The improvement ability of coal powder performance needs further raising, and this is also the subject matter for influenceing coal dust additive popularization and application. Inventor combines the theory analysis of process of coal combustion, and by long-term substantial amounts of experimental studies have found that, by coal dust plus Enter the sea salt of certain content as additive, such that it is able to effectively facilitate the precipitation of volatile matter and the burning of coal dust, make coal dust Burn-out temperature and maximum weightless temperature have shifted to an earlier date, and the ignition point of coal dust has also obtained effective reduction, and this is probably due to sea Metallic element in salt act as the active carrier of oxygen in process of coal combustion, under In frared spectra, oxygen is delivered into carbon Surface, so as to promote the burning of coal dust.Meanwhile, the present invention can also substantially reduce fuel bound nitrogen to NO's by the addition of sea salt Conversion and SO2Discharge capacity, and the generation time of pollutant is shortened, so as to reduce the discharge capacity of coal dust firing pollutant.
But it should be recognized that inventor has found in research process, the combustibility of the addition for coal dust of sea salt Most important, when sea salt addition is very few, its improvement result to coal powder performance is relatively small, but when the addition of sea salt When measuring excessive, a part of Na in sea salt is easily covered on the carbon surface of part, obstruction stomata, increases the resistance of oxygen diffusion Power, hinders burning of coal, so as to reduce the apparent activation energy of system, improves reaction rate, subtracts the effect of coal rank It is weak, and then the ignition temperature of coal dust can not be further reduced, or even ignition temperature is increased.When sea salt addition is excessive also Pollution that caused by coal burning thing NO can be reducedxRemoval efficiency, and easily occur coking bonding phenomenon, exist block carbon granules hole harm.Simultaneously Inventor in experimentation it has also been found that, when sea salt addition is excessive, to also result in and produce some refractory compounds in combustion process, These refractory compounds can just disappear when 900 DEG C of even more high temperature are increased to, so as to influence the combustibility of coal dust.Inventor is led to Cross experimental study and design is optimized to the addition of sea salt, when the mixing quality ratio of sea salt and coal dust is 2:100~5: 100, pollution that caused by coal burning thing NO can be simultaneously reduced on the basis of coal powder performance is effectively improvedxAnd SO2Discharge capacity, especially When the mixing quality ratio of sea salt and coal dust is 4:100~5:When 100, combustibility, the NO of coal dust can be madexDischarge and SO2 Discharge three between realize best fit, this is also key point of the invention.
The preparation method of the above-mentioned coal dust with excellent combustibility of the invention, its step is：Described sea salt is molten In deionized water, mix according to mass ratio with coal dust after filtration treatment, then under 40-60 DEG C of water bath condition to mixed liquor It is stirred, is sufficiently mixed it, be subsequently placed in baking oven and dry 2~3h in 100~110 DEG C, obtains final product coal dust of the invention.By Sea salt in the present invention is obtained after directly being processed through removal of impurities by seawater, and wide material sources are cheap, and preparation technology letter Single, operation requires low, is easy to commercial introduction application, and this is significant for making full use of for China's coal dust resource, solution Determined existing coal dust additive component formula is complex, high cost deficiency, and the burning of coal dust can be effectively ensured simultaneously Performance.
Specifically, the present invention acts on the volatilization that can effectively facilitate coal dust by the mutual cooperation of each metallic element in sea salt The precipitation and the reduction of ignition temperature for dividing, while having the effect for increasing pulverized coal particle aperture, make pulverized coal particle endoporus area Increased, coal dust specific surface area is mutually strained greatly, and aperture is unobstructed, more abundant with oxidising agent, reduced when having reached burning The effect of ignition temperature.Additionally, by controlling suitable sea salt addition, coal powder performance being effectively ensured and obtaining effectively On the basis of improvement, the NO with best fitxAnd SO2Removal effect, and can effectively the generation of slagging prevention bonding phenomenon and The generation of refractory compound in combustion process.
To further appreciate that present disclosure, in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
A kind of preparation method of coal dust with excellent combustibility of this example, coal pulverizer powder is utilized by natural coal ore Breakdown mill, the pulverized coal particle with the particle diameter obtained after the sieved through sieve that mesh number is 200 mesh less than 74 μm weighs 0.02g seas respectively (mass ratio is 1 to salt with 2g coal dusts:100) sea salt, is dissolved in deionized water, is mixed with coal dust after filtration treatment, in 40 DEG C of water-baths In 1h is stirred to mixed liquor, after being sufficiently mixed, be put into baking oven and dry, it is 100 DEG C to set oven temperature, is obtained by being taken out after 2h Obtain required coal dust.The analysis of chemical elements of coal dust and Industrial Analysis result are as shown in table 1 below in the present embodiment, and sea salt used is Obtained after directly being processed through removal of impurities by seawater, its chemical composition for including following mass percent：Cl elements：55%；Na elements： 15%；S elements：2.5%；F elements：5%；Mg elements：8%；Ca elements：6%；Al elements：2%.
The elementary analysis of coal dust and Industrial Analysis result in the present embodiment of table 1
Embodiment 2
A kind of preparation method of coal dust with excellent combustibility of this example, coal pulverizer powder is utilized by natural coal ore Breakdown mill, the pulverized coal particle with the particle diameter obtained after the sieved through sieve that mesh number is 200 mesh less than 74 μm weighs 0.04g seas respectively (mass ratio is 2 to salt with 2g coal dusts:100) sea salt, is dissolved in deionized water, is mixed with coal dust after filtration treatment, in 55 DEG C of water-baths In 1.5h is stirred to mixed liquor, after being sufficiently mixed, be put into baking oven and dry, it is 107 DEG C to set oven temperature, is taken out after 2h Coal dust needed for obtaining.The analysis of chemical elements of coal dust used and Industrial Analysis result are with embodiment 1, sea used in the present embodiment Salt is to be obtained after directly being processed through removal of impurities by seawater, its chemical composition for including following mass percent：Cl elements：53%；Na Element：20%；S elements：2.3%；F elements：6%；Mg elements：5%；Ca elements：5%；Al elements：2.7%.
Embodiment 3
A kind of preparation method of coal dust with excellent combustibility of this example, coal pulverizer powder is utilized by natural coal ore Breakdown mill, the pulverized coal particle with the particle diameter obtained after the sieved through sieve that mesh number is 200 mesh less than 74 μm weighs 0.06g seas respectively (mass ratio is 3 to salt with 2g coal dusts:100) sea salt, is dissolved in deionized water, is mixed with coal dust after filtration treatment, in 60 DEG C of water-baths In 2h is stirred to mixed liquor, after being sufficiently mixed, be put into baking oven and dry, it is 100 DEG C to set oven temperature, is obtained by being taken out after 2h Obtain required coal dust.The analysis of chemical elements of coal dust used and Industrial Analysis result are with embodiment 1, sea salt used in the present embodiment It is to be obtained after directly being processed through removal of impurities by seawater, its chemical composition for including following mass percent：Cl elements：54%；Na units Element：17%；S elements：2.85%；F elements：6.87%；Mg elements：6.8%；Ca elements：4%；Al elements：1.6%.
Embodiment 4
A kind of preparation method of coal dust with excellent combustibility of the present embodiment, its preparation process and the base of embodiment 1 This is identical, and difference is that sea salt is 4 with the mass ratio of coal dust:100,0.08g sea salt and 2g coal dusts are weighed respectively；Water Bath mixing time is 1.5h, and it is 105 DEG C to set oven temperature, and drying time is 2.5h.The chemistry of coal dust used in the present embodiment , with embodiment 1, sea salt used is U.S.'s coral reef hard-cover sea salt, and it includes following quality hundred for elementary analysis and Industrial Analysis result Divide the chemical composition of ratio：Cl elements：50.81%；Na elements：18.51%；S elements：2.99%；F elements：7.99；Mg elements： 6.32；Ca elements：4.25；Al elements：1.32%.Inventor's research finds, when the mass ratio of sea salt and coal dust is 4:100, And sea salt used is when being the U.S. coral reef hard-cover sea salt in the present embodiment, the combustibility of gained coal dust, NOxRemoval effect And SO2Removal effect realize best fit.
Embodiment 5
A kind of preparation method of coal dust with excellent combustibility of the present embodiment, its preparation process and the base of embodiment 1 This is identical, and difference is that the mass ratio of sea salt and coal dust is 5:100,0.1g sea salt and 2g coal dusts are weighed respectively；Water-bath Stirring 2h, it is 110 DEG C to set oven temperature, and drying time is 3h, the analysis of chemical elements and work of coal dust used in the present embodiment Industry analysis result is with embodiment 1, and sea salt component used is same as Example 3.
Gained coal dust will be prepared in embodiment of the present invention 1- embodiments 5 to enter under the same conditions with the coal dust for being not added with sea salt Row combustion testing, and combustibility and pollutant discharge amount to coal dust carries out test and comparison, as a result as shown in Figure 1-Figure 3.Its In, the combustibility of coal dust to be studied respectively using thermal analyzer (NETZSCH-STA 449C), experiment condition is：Experiment Condition is：30-1000 DEG C of temperature range, experimental gas are air, and heating rate is 15K/min, and sample quality is 9-12mg.By Fig. 1-Fig. 3 can be seen that is used as additive by the sea salt that certain content is added in coal dust, can significantly improve the combustion of coal dust Burn characteristic, reduce the burning point of coal dust, while the NO produced in can effectively reducing process of coal combustionxAnd SO2, and its raw material Composition and preparation process is simple, cost are relatively low, beneficial to popularization and application.Wherein, when the mass ratio of sea salt and coal dust is 4:100~5: Effect is best when 100.

Claims (9)

1. a kind of coal dust formula with excellent combustibility, it is characterised in that：It is by a certain amount of to being added in coal dust Sea salt is prepared from as additive, wherein, the mixing quality ratio of the sea salt and coal dust is 2:100~5:100.
2. a kind of coal dust formula with excellent combustibility according to claim 1, it is characterised in that：Described coal dust Be by the raw coal size-reduced grinding of fine ore stone after, using the particle diameter obtained after the sieved through sieve that mesh number is 200 mesh less than 74 μm Pulverized coal particle.
3. a kind of coal dust formula with excellent combustibility according to claim 1 and 2, it is characterised in that：Described Sea salt includes the chemical composition of following mass percent：Cl elements：50-55%；Na elements：15-20%；S elements：＜ 3%；F Element：5-8%；Mg elements：5-8%；Ca elements：4-6%；Al elements：＜ 3%.
4. a kind of coal dust formula with excellent combustibility according to claim 3, it is characterised in that：Described sea salt It is to be obtained after directly being processed through removal of impurities by seawater.
5. a kind of coal dust formula with excellent combustibility according to claim 3, it is characterised in that：The sea salt with The mixing quality ratio of coal dust is 4:100~5:100.
6. a kind of coal dust formula with excellent combustibility according to claim 5, it is characterised in that：The sea salt with The mixing quality ratio of coal dust is 4:100.
7. a kind of preparation method of coal dust with excellent combustibility as any one of claim 1-6, its feature It is that its step is：Described sea salt is dissolved in deionized water, is mixed according to mass ratio with coal dust after filtration treatment, so After being stirred to mixed liquor under water bath condition, it is sufficiently mixed, is subsequently placed at drying in baking oven, obtain final product coal of the invention Powder.
8. the preparation method of a kind of coal dust with excellent combustibility according to claim 7, it is characterised in that：It is described The temperature of water-bath is 40~60 DEG C, and mixed liquor is stirred into 1~2h under water bath condition.
9. the preparation method of a kind of coal dust with excellent combustibility according to claim 8, it is characterised in that：It is described Oven temperature is 100~110 DEG C, and the drying and processing time is 2~3h.
CN201710122023.3A 2017-03-03 2017-03-03 A kind of coal dust formula with excellent combustibility and preparation method thereof Pending CN106833802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710122023.3A CN106833802A (en) 2017-03-03 2017-03-03 A kind of coal dust formula with excellent combustibility and preparation method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710122023.3A CN106833802A (en) 2017-03-03 2017-03-03 A kind of coal dust formula with excellent combustibility and preparation method thereof

Publications (1)

Publication Number Publication Date
CN106833802A true CN106833802A (en) 2017-06-13

Family

ID=59137160

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710122023.3A Pending CN106833802A (en) 2017-03-03 2017-03-03 A kind of coal dust formula with excellent combustibility and preparation method thereof

Country Status (1)

Country Link
CN (1) CN106833802A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1232076A (en) * 1998-04-11 1999-10-20 侯桂琴 Coal combustion adjuvant

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1232076A (en) * 1998-04-11 1999-10-20 侯桂琴 Coal combustion adjuvant

Similar Documents

Publication Publication Date Title
CN102796583B (en) Efficient clean briquette coal and preparation method thereof
CN107267252B (en) Cement kiln fire coal combustion improver and preparation method thereof
CN1208438C (en) Method for producing smoke-prevention, dust-contorl and energy saving combustion improver
CN104293412B (en) Preparation method of coal combustion improver
CN102643704A (en) Fuel coal oxygen-increasing combustion-supporting explosion pill as well as preparation method and application thereof
CN104449941A (en) Efficient catalytic combustion-supporting coal-saving agent
CN106833802A (en) A kind of coal dust formula with excellent combustibility and preparation method thereof
CN104293410B (en) Desulfurization, dust removal and coal combustion accelerant
CN100360648C (en) Environmental protection and coal-saving combustion supporting agent
CN115537246A (en) Accelerant for thermal power generation, smelting and thermal power plant processes of raw coal
CN102643705A (en) Coal combustion-supporting hydrogel as well as preparation method and application thereof
CN114405551A (en) Method for preparing sol-gel type coal-fired catalyst by using electroplating sludge
CN103131513A (en) Thermal power plant fire coal combustion supporting and sulfur fixation composition method
CN103305313A (en) Combustion catalyst for low-heat value coal
CN103131519A (en) Boiler fire coal sulfur fixation composition method
CN106635241A (en) Composite coal injection combustion improver for cement kilns and application thereof
CN103131507A (en) Cement plant coal combustion-supporting formulation method
CN101705133A (en) Efficient coal-fired combustion-supporting desulfurization additive and preparation method thereof
CN101275096B (en) Solid desulfuration incendiary agent for coal-burning boiler
CN100516183C (en) Coal burning catalyzing and inducing activator for cement industry and its use
CN100354396C (en) Coal-firing efficient additive for dry cement process and its use
CN103131516A (en) Cement plant fire coal combustion supporting and sulfur fixation composition method
CN101955834A (en) High-efficiency desulfurization economizer agent of coal burning boiler
CN103131504A (en) Cement plant coal sulfur-fixing formulation method
CN103131515A (en) Boiler fire coal sulfur fixation composition method

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20170613