CN1152124C - Clean combustion of coal and application and products of its companion substance - Google Patents

Clean combustion of coal and application and products of its companion substance Download PDF

Info

Publication number
CN1152124C
CN1152124C CNB00103328XA CN00103328A CN1152124C CN 1152124 C CN1152124 C CN 1152124C CN B00103328X A CNB00103328X A CN B00103328XA CN 00103328 A CN00103328 A CN 00103328A CN 1152124 C CN1152124 C CN 1152124C
Authority
CN
China
Prior art keywords
coal
zlt
flyash
thing
combustion
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.)
Expired - Fee Related
Application number
CNB00103328XA
Other languages
Chinese (zh)
Other versions
CN1294181A (en
Inventor
郑春雷
郑东风
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.)
Zheng Dongfeng
Original Assignee
Individual
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
Priority claimed from CN 99121977 external-priority patent/CN1248614A/en
Application filed by Individual filed Critical Individual
Priority to CNB00103328XA priority Critical patent/CN1152124C/en
Priority to AU36542/00A priority patent/AU3654200A/en
Priority to PCT/CN2000/000079 priority patent/WO2001030944A1/en
Publication of CN1294181A publication Critical patent/CN1294181A/en
Application granted granted Critical
Publication of CN1152124C publication Critical patent/CN1152124C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/02—Use of additives to fuels or fires for particular purposes for reducing smoke development
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/08—Flue dust, i.e. fly ash
    • C04B18/084—Flue dust, i.e. fly ash obtained from mixtures of pulverised coal and additives, added to influence the composition of the resulting flue dust
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

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

Abstract

The present invention relates to a concomitant product generated by coal purification combustion and an application method thereof, particularly to a method for preparing a concomitant product, a twice using method of adjustable hydraulicity flyash with high added value and a product of the adjustable hydraulicity flyash with high added value. In the method, certain powder mixing substances are added to the adjustable hydraulicity flyash to be mixed and ground with coal; then, affinity particles are formed to be sprayed into a flyash furnace and a cyclone furnace and be processed by affinity calcination; simultaneously, steam and the adjustable hydraulicity fly ash with high added value are produced. Owing to the method of the present invention, the carbon content in flyash and the discharge amount of SO2, NO2, CO and CO2 in smoke gas in a flyash boiler are reduced, the atmospheric pollution is reduced. Free calcium oxide as harmful substances in high-calcium dust coal is eliminated, so original waste flyash and clinker are completely converted into product raw materials with high added value, and a combusting concomitant product is completely used. The present invention not only has great positive function on environmental protection, but also can create considerable economical benefit.

Description

The application of coal purification of combustion and concomitant product and product
The present invention relates to the application method that the coal purification of combustion produces concomitant product and concomitant product, be specifically related in coal dust to add and certain form " affinity particles " after mixing amylaceous substance and coal mix grinding, spray into " affinity calcining " in coal-powder boiler and the cyclone furnace, produce adjustable hydraulicity flyash of steam and high added value simultaneously and the method and the product that utilize once more of flyash.
Along with the development of energy industry, the quantity discharged of the flyash of China has reached more than 300,000,000 tons/year, in 2000, might reach 1.5 hundred million tons/year.The discharging of flyash has taken a large amount of soils, has also become the big obstacle of environment protection.For a long time, for flyash being carried out the comprehensive regulation and utilization again, various solution routes are all being explored by each state.In recent years, states such as the U.S., Britain, France and Norway have made progress aspect the utilizing again of flyash, wherein more advanced a kind of method is as concrete a kind of base-material with flyash, make flyash concrete, but the defective of this method is: owing to exist a large amount of carbon residue in the flyash, so influenced the quality and the performance of cement products, simultaneously, because the flyash that carbon content is high easily forms one deck hydrophobic film on its surface, hinder the hydration reaction of active substance, can play discrete destruction the cohesion assembly of cement products.The reason that fly ash carbon content is high is analyzed, and its principal element is because burning of coal is insufficient.Because burning of coal is insufficient; not only can cause atmospheric pollution; and the flyash that can can't utilize the burning back to produce fully; therefore; make full use of flyash; change the swift and violent flyash of growth trend environment protection is caused the present situation of very big adverse consequences, at first will reduce the carbon content in the flyash.Along with environment protection is increasing to the human survival influence of society, also be necessary to consider to make the coal purification of combustion, reach the purpose of the quantity discharged of desulfurization, reduction oxynitride and minimizing carbonic acid gas and carbon monoxide.
In prior art of the present invention, disclosed the method for the production and the utilization of flyash with gelling, disclosed the plurality of advantages of high calcium-containing flyash, but reality is, our employed bituminous coal and anthracitic calcium content are all very low, for example be lower than 10%, this low calcium content has limited the gelling (coagulability) of the flyash that coal produces after burning.Prior art does not solve when using bituminous coal and hard coal, how to make flyash can improve calcium content, thereby improves the degree of its gelling and to the problem of utilizing once more of this flyash.The contriver is also noted that, in prior art, the utilization of coal ash means have been begun to relate to, also relate to coal at aflame desulphurization problem, but the desulfurization degree to raw coal in the prior art is still very low, does not also disclose concrete means and method that flyash utilizes once more, therefore, coal because the objectionable impurities of discharging still can not overcome fully to the consequence that atmospheric environment causes, still can not be realized the utilization once more of flyash in burning.Obviously; if have a kind of economy, appropriate means can improve the calcium content in the flyash; the content that reduces unreacted silicon-dioxide all utilizes once more with the economic worth of lifting flyash and to flyash, will produce great positive effect to environment protection and even human existence state.
Main purpose of the present invention is to reduce flyash that coal dust produces after burning and the carbon content in the lime-ash, thereby it can all be utilized once more.
Second purpose of the present invention is to save the energy consumption when generating or heat supply of power station or heat power plant.
The 3rd purpose of the present invention is to utilize low grade coal energetically, thereby a large amount of low grade coals that exist of China are fully used, and alleviates the resource anxiety.
The 4th purpose of the present invention provides the application method of the concomitant product that produces behind a kind of coal purification of combustion, makes it be used for manufacturing and cement and concrete.
The 5th purpose of the present invention is to utilize method of the present invention to make coal can finish desulfurization in combustion processes, and reduces oxynitride and carbon monoxide, emission amount of carbon dioxide, thus the effective human environment of depending on for existence of protection.
The present invention adopts following technique means to realize: the method for a kind of coal purification of combustion and generation concomitant product, it is characterized in that: in coal dust, add a kind of by containing the active silica material, unslaked lime, carbide slag, the silicon ash, rich iron substance, phosphorus containg substances, furnace phosphorus slag, desulfurization catalyst is mixed the burning thing by weight " ZLT " that form, " ZLT " mixes and burns the adsorbed close formation " affinity particles " after the mix grinding homogenizing by a certain percentage of thing and coal, this " affinity particles " sprays in coal-powder boiler or the cyclone furnace under the state of " gas-solid liquid suspension reaction " " affinity calcining ", makes the mass transfer of combustionmaterial, heat transmits, momentum transfer is the fastest.
" ZLT " mixes the component and the weight percent that burn thing:
Contain active silica material 1-50 unslaked lime 5-98
Carbide slag 0-80
Rich iron substance 0-10 phosphorus containg substances 0-10
Electric furnace phosphorus slag 0-5 desulfurization catalyst 0-5
" ZLT " mixes the proportioning of burning thing and coal:
Coal dust 50-95 " ZLT " mixes and burns thing 6-55
Comprise at the material that contains active silica described in the aforesaid method: shale ore, potter's clay, silicon ash, clay, desulfurization catalyst comprises Vanadium Pentoxide in FLAKES (V 2O 5) wait material.The fineness that " ZLT " mixes " affinity particles " behind burning thing and the coal dust mix grinding is 0.08 millimeter square hole sieve, and screen over-size is 2%-30%." ZLT " mixes the burning thing can mix the back with the low heat value low grade coal in the coal-powder boiler and cyclone furnace of power station and heat power plant " affine calcining ".
Above-mentioned coal purification of combustion and the technical process that produces the method for concomitant product are: select materials-coal mixes " affine calcining "-concomitant product (" active fly ash " or " self-hardening property flyash " or " belite cement grog " and respective slag) in burning thing proportioning-pulverizer-Pulverized Coal Bin-machine supplying powder-fuel nozzle-pulverized coal firing boiler with ZLT.According to this technical process, coal is mixed the compound that burns after thing prepares with " ZLT " and is entered coal mill by transfer roller, this coal mill can be a ball mill, and vertical mill or other any type of pulverized coal preparation system are mixed " ZLT " and burnt thing and coal dust formation " affinity particles " state.In above-mentioned method, mix the prescription that burns thing, the viscosity that reduces reactant and " ZLT " and mix the fineness of burning " affinity particles " that thing becomes with the coal mix grinding by adjusting " ZLT ", can make enrichment of active fly ash microballon and refinement.In aforesaid method, " ZLT " mixes the furnace temperature that the mixture that burns thing and coal carries out " affinity calcining " just can generate the concomitant product that is rich in " Baily spy " between 800-1340 ℃, and reduces the content of oxynitride in the flue gas simultaneously.
In the method for above-mentioned coal purification of combustion and generation concomitant product, the concrete grammar of desulfurization is, on the basis of fixed desulfurization, spray into water vapour at boiler flue and fly-ash separator forward direction ash-laden gas, carry out the second step humidification desulfurization, the effect of fixed desulfurization can reach desulfurization 20-70%, and further humidification desulfurization can reach 70-90%.
According to the concomitant product product that above-mentioned coal purification of combustion produces, it is characterized in that: it contains following component, and its ratio range is:
Baily spy (Dicalcium Phosphate (Feed Grade)) C 2S 5-75
(tricalcium aluminate) C 3A 1-40
Aluminium ferrous acid four calcium C 4AF 1-40
Loss on ignition (carbon content) 0-5
It also can contain following component above-mentioned concomitant product product, and its proportioning is:
Aluminium ferrous acid calcium C 2(A, F) 1-30
Free lime CaO 0.1-8
Free magnesium MgO 0-10
Contain the alkali aluminate as (K, Na) 20.8CaO.3Al 2O3 (K, Na) C 8A 30-10
Sulfuric acid alkali or nitric acid alkali as (K, Na) 2SO 4(K, Na) NO 30-10
Calcium sulfate and calcium sulfite CaSO 4.CaSO 30-50
Nitrocalcite and calcium nitrite Ca (NO 3) 2Ca (NO 2) 20-10
Phosphorus and other material 0-10
Calcium sulphoaluminate 3CaO.3Al 2O 3.CaSO 40-20
In the concomitant product product that the coal purification of combustion produces,, adjust " ZLT " and mix the proportioning of burning thing, make C in the concomitant product " active fly ash " that produces after " affinity calcining " according to the difference of coal ash content and component 2The content of S reaches 0-20%.According to the difference of coal ash content and component, adjust " ZLT " mix the proportioning of burning thing, make in the concomitant product " self-hardening property flyash " of " affinity calcining " back generation C 2The content of S reaches 20-50%.According to the difference of coal ash content and component, adjust " ZLT " mix the proportioning of burning thing, make in concomitant product " Baily spy " cement clinker of " affinity calcining " back generation C 2The content of S reaches 50-75%.
The concomitant product that above-mentioned coal purification of combustion produces can be used for making cement or concrete.
In above-mentioned application, the concomitant product that the coal purification of combustion produces through superfine pulverizing (1 nanometer-3 micron) after, be used for production hi-tech cement or high-effective concrete.The concomitant product that the coal purification of combustion produces can be used as the toughener of any gelling material, and the incorporation of concomitant product is 0.5-15%.Concomitant product flyash that the coal purification of combustion produces and the Portland clinker proportioning that can produce high grade cement that is mixed is:
Cement clinker 2-95 concomitant product 2--95
Latent hydraulicity material or pozzolanic materials 0-50
Gypsum 1-7
Cement fineness requires at 0.08 millimeter square hole sieve, and screen over-size is less than 12%.The proportioning of production high-quality expansive cement is but concomitant product that produces behind the burning high-sulfur coal and Portland clinker are mixed:
Cement clinker 30-95 concomitant product 2--70
Latent hydraulicity material or pozzolanic materials 0-50
Gypsum 1-7
Cement fineness requires at 0.08 millimeter square hole sieve, and screen over-size is less than 12%.The concomitant product that forms behind the coal purification of combustion under situation about need not grind, can replace the cement of 5%-95%, after stirring with sandstone, water, makes quality concrete.After the concomitant product that forms behind the coal purification of combustion ground, replace 5%-95% cement, make quality concrete with cement, sand, stone, water after stirring, the specific surface area of concomitant product should be 3800 square centimeters/kilogram-6500 square centimeters/kilogram.In the application of the concomitant product that above-mentioned coal purification of combustion produces, concomitant product itself just can use as hydraulicity cement.The hardening accelerator of concomitant product+0.1-30% just can be made into the high-quality cement of high index.
The present invention compared with the prior art, the outstanding advantage that has is:
The first, the fusion of mixing burning material and coal dust of mixing in coal dust is heat release, and this just makes the combustionvelocity of coal faster, and the thermo-efficiency of boiler is improved;
The second, mixing of mixing in coal dust burnt material and dissolved the coal class and make it be in liquid state or semi liquid state, and coal particles produces micropore fast, makes oxygen transmission, catalysis, oxidation effect better.
The 3rd, owing to mix mixing of material of burning coal is fully burnt, greatly reduce the generating and the heat cost in power station, with one 220 tons/time pulverized coal firing boiler be example, calculate by 10% coal saving rate, can economize on coal every year 1.9 ten thousand tons, coal saving rate can reach 6%-15%, reduces cost about 3,040,000 yuan/year.
The 4th, can effectively utilize low-calorie low grade coal, and don't the works better of normal generating of influence and boiler, adopt the inventive method lower heat of combustion or mix burning low heat value low grade coal, need not boiler is done any transformation.In China, huge social benefit and economic benefit that the effective utilization of low grade coal is produced are conspicuous.And general coal-powder boiler requires the calorific value of coal more than 5000 card/kilograms, if coal-fired calorific value is on the low side, coal dust just catches fire in boiler easily, and make the power station can not normal power generation and heat supply.But exactly there is the MSDS material to show in the coal reserves of China, has 20% to be to be lower than the following low grade coal of 4000 card/kilograms approximately, can not be fully utilized, will inevitably cause the waste of energy source material as these coals.China is one of country of energy relative shortage, so country encourages to use this low grade coal always.
The 5th; because the application of the inventive method; reduced the carbon content in the flyash; eliminated the objectionable impurities free calcium oxide in the high calcium fine coal; make original refuse flyash and lime-ash all become the high value-added product raw material; thereby make the incendiary concomitant product all obtain utilizing, both great positive effect had been played in environment protection, created considerable economic again.
The 6th, because application of the present invention can reduce furnace temperature effectively, particularly the furnace temperature in the hyperoxia zone of boiler reduces, and the burn-up efficiency that adds coal just excess air coefficient reduces, destroy the formation of oxynitride indirectly, reduced the discharging of oxynitride effectively.
The 7th, because application of the present invention makes the burning of coal more abundant, the quantity discharged of carbon monoxide is reduced.
The 8th, because application of the present invention has fully improved the utilization ratio of coal, the carbonic acid gas that discharges in generating or the heat supply is reduced.
The 9th, because application of the present invention makes the temperature distribution in the stove more even, be convenient to control better boiler, reduce boiler abrasion.
The tenth, because application of the present invention can be accomplished desulfurization to greatest extent (desulfurization degree can reach more than 90%), so can protect environment effectively;
The 11, because application of the present invention, can produce high performance gelling material, and the high calcium substance of mixing burning can reach and regulate various calcium contentss by regulating its proportioning, thereby (for example: volcanic ash-low calcium satisfy different needs; Trass cement-middle calcium, cement-high calcium).
The present invention is further illustrated below in conjunction with some specific embodiments.
Embodiment 1 is that " ZLT " mixes a concrete example and an implementation result formed that burns thing
In the present embodiment, " ZLT " mixes the selected starting material of burning thing batching has following several:
Shale: Sio 2Content 66% unslaked lime: CaO content 92%
Silicon ash: Sio 2Content 88% carbide slag: P 2O 5Content is at 10%-15%;
Powdered iron ore: Fe 2O 3Content 69% furnace phosphorus slag
Raw coal: thermal value 6230kcal/kg ash 21%
Shale is selected the active shale of shale ore high-quality for use, and shale ore decomposes the back deposition by basalt weathered and forms, and it contains SiO 2Amount can be 66%;
Raw coal is the Shanxi high-quality anthracite, thermal value 6230kcal/kg, and ash 21%, water content is 1%.It is as shown in the table that " ZLT " mixes the concrete batching of burning thing:
Raw material Shale Unslaked lime The silicon ash Carbide slag Powdered iron ore Furnace phosphorus slag
Per-cent 23 69.5 2 2 2 1.5
" ZLT " mixes the burning thing and raw coal proportion is: " ZLT mixes and burns thing 25%, raw coal 75%
Its technical process is as follows:
After selected batching is entered factory, deliver to the storage of each raw material and the storehouse of preparing burden through handling equipment, the batching storehouse has electronic batching scale, and each raw material is pressed following proportioning through the electronic batching scale accurate dosing.
Coal and " ZLT " mix and burn the compound that thing prepares and enter coal mill by transfer roller, and this coal mill can be ball mill, vertical mill or other any type of pulverized coal preparation system, and " ZLT " mixes and burn the thing component and the coal fine powder is in the thorough mixing adsorbed state.The coal dust that mill is good is sent in the Pulverized Coal Bin of the #3-220t/h of A power plant pulverized coal firing boiler.
The coal dust of spray apparatus ejection is when the burner hearth internal combustion, and fire box temperature is between 1000-1500 ℃." ZLT " mixes and burns thing and raw coal in the combustion processes of boiler of power plant, a series of physics, chemical transformation take place and forms various mineral.
800-900℃
(ferrous acid one calcium)
(monocalcium aluminate)
More than 900 ℃, the CaCO in the material emits CO very soon, and because temperature raises, and solid state reaction is quickened, wherein:
900-1000℃
(dicalcium ferrite)
(three aluminic acids, five calcium)
800-1300℃
(Dicalcium Phosphate (Feed Grade))
1000-1300℃
(tetracalcium aluminoferrite)
1300-1450 ℃ of C 3A and C 4AF is molten into liquid phase, and carries out following reaction:
From the flyash that pulverized coal firing boiler and electrical equipment dedusting are collected, carbon content is controlled at below 3% after testing.
During present embodiment carries out, the normal heat supply of boiler, generating, operation does not have influence; Furnace flame brightness obviously strengthens, and promotes burning, stable burning, has improved burnout rate; The flyash color obviously becomes ash, and proportion improves 30%, and carbon residue content reduces to 1.5% by original 8%; Saving coals from boiler adds up 8.5%; Furnace bottom slag has increased by 20%; Boiler fly ash increases; The boiler furnace outlet flue-gas temperature has reduced by 120 ℃; Realize the coal purification of combustion and produced whole available concomitant products.
Embodiment 2 is that method of the present invention reaches desulfurization and falls the concrete utilization of nitrogen purpose.
In the present embodiment, " ZLT " mixes the selected starting material of burning thing batching has following several:
Shale: Sio 2Content 69% unslaked lime: CaO content 89%
Silicon ash: Sio 2Content 85% carbide slag
Powdered iron ore: Fe 2O 3Content 56% furnace phosphorus slag
Raw coal: thermal value 5850kcal/kg ash 16%
" ZLT " mixes the burning thing and specifically prepares burden as following table:
Raw material Shale Unslaked lime The silicon ash Carbide slag Powdered iron ore Furnace phosphorus slag
Per-cent 19 69 2 5 3 2
" ZLT " mixes the proportioning of burning thing and raw coal: " ZLT " mixes and burns thing 28%, raw coal 72%
" ZLT " mixes and burns thing and raw coal in the combustion processes of boiler of power plant, a series of physics, chemical transformation take place and forms various mineral.
800-900℃
(ferrous acid one calcium)
(monocalcium aluminate)
More than 900 ℃, the CaCO in the material 3Emit CO very soon 2, and because temperature raises, and solid state reaction is quickened, wherein:
900-1000℃
(dicalcium ferrite)
(three aluminic acids, five calcium)
800-1300℃
(Dicalcium Phosphate (Feed Grade))
1000-1300℃
(tetracalcium aluminoferrite)
1300-1450 ℃ of C 3A and C 4AF is molten into liquid phase, and carries out following reaction:
" ZLT " mixes and burns thing and raw coal in the incendiary process, the C of formation 4AF helps desulfurization, the fast burning for solid molten fast, and the key of fixed desulfurization is that speed is cold, makes SO 3Evaporation rate reduce.
The essence of fixed desulfurization is exactly that the biggest ground may reduce SO 3Volatilization, that part of SO of evaporable 3Further, form Ca again with the fine particle collision 2SO 3, Ca 2SO 4, and humidification makes SO 3Further be absorbed.
In the present embodiment, the principle of realization high-efficiency desulfurization is as follows:
Sulphur in the coal has the form of three kinds of existence:
First kind is organosulfur, is with organic hydrocarbon polymer to combine, as H 2S.
Second kind is sulfide, mainly has impurity F e 2Among the S.
The third is vitriol, is present in the various vitriol, as CaSO 4, MgSO 4, Fe 2(SO 4) 3, Na 2SO 4, K 2SO 4Deng.
Sulphur in organosulfur and the iron sulphide, all can burn generates SO 2So, be flammable sulphur again, be present in the vitriol sulphur and remove sub-fraction and at high temperature decompose and generate SO 3Outward, all the other are all stayed in the ash.The key of desulfurization is the adding and the reaction of oxygen enrichment, high calcium, catalyzer.The use of superheater makes the cold possibility that becomes of speed, and it is cold that the key that the coal purification of combustion can desulfurization is that speed is burnt speed.Because the particle of the combustionmaterial material in the present embodiment is little,, the Rapid Thermal exchange of water wall and superheater is arranged again with air energy sufficient heat exchange, so material is easily grilled thoroughly fast, also cooling fast easily also combines with oxygen easily, can not produce local reduction atmosphere, the SO in the raw coal 2Do not have d/d that time, be fused to admittedly in other mineral earlier, and reduced eutectic point, give full play to the effect of its mineralizer, reducing SO in the refrigerative process fast 2And SO 3Release.Present embodiment is to have formed metastable mineral with the different of traditional desulfurization, and it is melted in silicate minerals admittedly.
In combustion processes sulphur be in high CaO mutually in, following reaction will take place:
(400-450℃)
(600℃)
(more than 600 ℃)
(600-800℃)
(400-800℃)
(more than 800 ℃)
In the 800-1000 ℃ of scope, catalyzer CaO strong absorption SO 3, and have higher speed of response and some SO 3Admittedly melt in silicate minerals.CaAlSO 4950 ℃ of generations, 1350 ℃ keep stable, and 1400 ℃ begin to decompose.
Humidification desulfurization mechanism is:
As shown in the table with the fixed desulfurization data of the method for present embodiment:
Test conditions #5 stove raw coal #5 stove raw coal+sweetening agent
Exhaust gas volumn Nm 3/h 92570 92570
SO 2Concentration mg/Nm 3 8334.9 2667.2
SO 2Quantity discharged kg/h 771.56 246.9
Adding " ZLT " mixes and burns thing and mix and burn desulfuration efficiency behind the thing:
(771.56-246.9)/771.56×100％＝68.1％
On the basis of above-mentioned fixed desulfurization, before boiler back end ductwork and electric precipitator, spray into the humidification water vapor, carry out the second step humidification desulfurization, as shown in the table:
Test conditions #B stove raw coal #B stove raw coal+sweetening agent
Exhaust gas volumn Nm 3/h 92570 92570
SO 2Concentration mg/Nm 3 8334.9 1105.7
SO 2Quantity discharged kg/h 771.56 102.4
Add " ZLT " mix burn thing mix burn thing and spray into humidification water vapour after desulfuration efficiency:
(771.56-102.4)/771.56×100％＝86.7％
In the present embodiment as can be seen, when in raw coal, add ZLT mix burn thing mix burn thing after, SO in the flue gas 2Desulfuration efficiency be 68.1%, when in raw coal, add ZLT mix burn thing mix burn thing and spray into humidification water vapour after desulfuration efficiency be 86.7%.
In the present embodiment, it falls nitrogen mechanism and is:
The generation of nitrogen content of coal oxide compound mainly contains two kinds of sources,
First is to contain organonitrogen in the coal, generates oxynitrides (NO during burning X); Second reacts for thermal-flame makes airborne nitrogen and oxygen, generates oxynitrides (NO X).The essence of falling nitrogen is exactly that the biggest ground may reduce NO XVolatilization, that part of NO of evaporable XFurther, form oxynitride again, and humidification makes NO with the fine particle collision XFurther be absorbed." ZLT " mix and burn thing and raw coal at stove internal combustion heat transfer efficiency height, not only improved the heat transfer efficiency of furnace wall, and the reduction of ingle point temperature, the temperature of each point is more even in the stove, find out from the flue gas temperature of hearth outlet meter and can reduce 100-150 ℃, can reduce NO thus XGrowing amount.Organonitrogen in coal does not have d/d that time, is fused to admittedly in other mineral earlier, and has reduced eutectic point, gives full play to the effect of its mineralizer, is reducing NO and NO in the refrigerative process fast 2Or NO XRelease.The nitrogen method of falling in the present embodiment is fallen the different of nitrogen method and is to have formed metastable mineral with tradition, and it is melted admittedly in silicate minerals, and its reaction formula is:
Further humidification falls nitrogen mechanism and is:
Effect to present embodiment detects, NO in the equal following table of content of oxynitride in the discharging flue gas 2Content represent.
Test conditions #B stove raw coal #B stove raw coal+sweetening agent
Exhaust gas volumn Nm 3/h 92570 92570
NO 2Concentration mg/Nm 3 707.2 518.9
Adding " ZLT " is fixed after mixing and burning thing and spray into humidification water vapour, nitrogen efficient falls in humidification:
(707.2-518.9)/707.2×100％＝26.8％
In the present embodiment as can be seen, falling nitrogen efficient after adding " ZLT " in raw coal is mixed the burning thing and sprayed into humidification water vapour is 26.8%.
Embodiment 3 is active fly ash and active furnace bottom slag of producing with method of the present invention and the concrete application example that is used to produce high grade cement
In the present embodiment, " ZLT " mixes the selected starting material of burning thing batching to be had following several:
Shale: Sio 2Content 66% unslaked lime: CaO content 92%
Silicon ash: Sio 2Content 88% carbide slag
Powdered iron ore: Fe 2O 3Content 69% furnace phosphorus slag
Raw coal: thermal value 6230kcal/kg ash 21%
It is as shown in the table that " ZLT " mixes the concrete batching of burning thing:
Table 1
Raw material Shale Unslaked lime The silicon ash Carbide slag Powdered iron ore Furnace phosphorus slag
Per-cent 19 69 2 5 3 2
" ZLT " mixes the burning thing and raw coal proportion is: " ZLT " mixes and burns thing 20%, raw coal 80%
The particular case of present embodiment gained concomitant product is: normally move at boiler under the situation of heat supply generating and obtain active fly ash and active furnace bottom slag, fCaO content is at 1-4% in the active fly ash, remaining carbon is at 0.5-3%, fCaO content is at 0.1-2% in the active furnace bottom slag, and remaining carbon is at 0.1-1%.
Grog is selected the cement clinker of certain outstanding kiln cement mill ordinary production for use, and its performance is as shown in the table:
Table 2
Ultimate compression strength (Mpa) Folding strength (Mpa)
Label 3d 7d 28d 3d 7d 28d
625 34 46 64 6.3 7.5 9.0
The proportioning of active fly ash and above selected grog is as shown in the table:
Table 3
Material Active fly ash Grog Gypsum
Per-cent 60 38 2
The proportioning of the active fly ash of present embodiment gained and active furnace bottom slag and above selected grog is as shown in the table:
Table 4
Material Active fly ash The furnace bottom slag Grog Gypsum
Per-cent 45 15 38 2
After testing, the physicals of the cement that the proportioning of table 3 is made in the present embodiment is as shown in the table:
Ultimate compression strength (Mpa) Folding strength (Mpa)
Label 3d 7d 28d 3d 7d 28d
525 24.2 36.9 55.3 4.6 5.6 7.5
525 23.8 33.8 57.5 4.7 5.8 7.9
The cement that active fly ash and grog mix grinding are produced, label reaches GB 525# cement standard, and stability is qualified.
After testing, it is as shown in the table that the title complex of present embodiment table 4 is milled into the physicals of cement:
Ultimate compression strength (Mpa) Folding strength (Mpa)
Label 3d 7d 28d 3d 7d 28d
525 23.2 35.3 58.4 4.8 6.3 8.5
525 23.6 39.7 61.5 5.2 6.8 8.9
The cement that active furnace bottom slag, active fly ash and cement clinker mix grinding are produced, label reaches GB 525# cement standard, and stability is qualified.
By present embodiment as can be seen, with the cement that active fly ash and traditional cement clinker proportioning mix grinding of method production of the present invention are produced, the product stability is qualified, and every performance index are good.With the cement that active furnace bottom slag, active fly ash and traditional cement clinker proportioning mix grinding of method production of the present invention are produced, the product stability is qualified, and every performance index are good.
Embodiment 4 is the examples with method production self-hardening property active fly ash cement of the present invention.
In the present embodiment, " ZLT " mixes the selected starting material of burning thing batching to be had following several:
Shale: Sio 2Content 68% unslaked lime: CaO content 93%
Silicon ash: Sio 2Content 90% carbide slag
Powdered iron ore: Fe 2O 3Content 69% furnace phosphorus slag
Raw coal: thermal value 5970kcal/kg ash 23% elemental sulfur (S) 0.6%
It is as shown in table 1 that " ZLT " mixes the concrete batching of burning thing:
Table 1
Raw material Shale Unslaked lime The silicon ash Carbide slag Powdered iron ore Phosphogypsum
Per-cent 15 74 2 5 2.5 1.5
" ZLT " mixes and burn thing and raw coal proportion: " ZLT " mixes and burns thing 30%, raw coal 70%.
The concomitant product self-hardening property flyash grog that obtains in the present embodiment and the performance perameter of slag grog are as shown in table 2 below:
Table 2
Title FCaO Loss on ignition
Self-hardening property flyash grog 3.5％ 1.2％
Self-hardening property furnace bottom slag grog 0.2％ 0.7％
Because self-hardening property active fly ash cement is mainly with C 2S is main, and it is early lower by force, so production self-hardening property pulverized fuel ash cement should add rapid hardening excitant alum 1.5%.
The performance of the self-hardening property pulverized fuel ash cement that present embodiment is produced is as shown in table 3:
Test number Proportioning Specific area cm 2/g Alcohol coagulation test Strength trial
Flyash The furnace bottom slag Gypsum Alum Initial set Final set Anti-folding Resistance to compression
3d 7d 28 d 3d 7d 28d
B-1 97 0 3 0 5600 0∶55 2∶00 2.7 3.1 6.2 18. 4 22.0 42.3
B-2 95.5 0 3 1.5 6400 0∶45 1∶50 4.5 5.8 7.1 25. 3 37.2 58.7
B-3 65.5 30 3 1.5 6100 0∶47 2∶04 4.8 5.6 8.2 24 35.6 56.4
In the present embodiment as can be seen, but self-hardening property flyash grog that the present invention produced and furnace bottom slag grog add production high-quality cement of high index behind a certain amount of rapid hardening excitant.
Embodiment 5 reaches the economize on coal example of purpose of boiler of power plant with method of the present invention.
Present embodiment is mixed according to " ZLT " of embodiment 3 and is burnt the selecting materials of thing, prescription and mix grinding and incendiary method, and " ZLT " mixes and burn thing and with raw coal proportion be: " ZLT " mixes burning thing 23%, raw coal 77%.
In the present embodiment, when " ZLT " mixes and burns thing and raw coal and burn in boiler, heat absorption when the coal ash component decomposes, " ZLT " mixes the burning thing and its reaction is heat release, so not only make burning reduce carbon residue fully, accelerated combustionvelocity simultaneously, the flue-gas temperature of contact water wall is increased, thereby improved the heat absorption efficiency of water wall, " ZLT " mixes and burns the flame blackness that thing also improved coal firing boiler radiative transfer efficient is improved, these make the thermo-efficiency of boiler improve greatly, use method of the present invention that boiler of power plant is economized on coal and reach 6%-15%.Following table is for mixing burning and not mixing burning " ZLT " and mix burning thing coal consumption experiment contrast table;
75 tons of/hour saving coals from boiler statistics tables of A power plant (kind of coal is Shanxi Province's Western Hills bituminous coal)
Time March April May June July August On average
Mix burning " ZLT " back actual consumption of coal (ton) 5240 4718 5889 5248 5054 5334 5253
Equal load is not mixed the required consumption of coal of burning " ZLT " (ton) 5829 5173 6464 5930 5704 6007 5851
Equal load is saved coal amount (per-cent) 10.1 8.8 8.9 10.9 11.4 11.2 10.2
220 tons of/hour saving coals from boiler statistics tables of B power plant (kind of coal is a bituminous coal)
Time November December January February March April On average
Mix burning " ZLT " back actual consumption of coal (ton) 17745 18627 19168 20438 19915 19916 19168
Equal load is not mixed the required consumption of coal of burning " ZLT " (ton) 20034 21104 21564 22788 22285 21410 21545
Equal load is saved coal amount (per-cent) 11.4 11.7 11.1 10.3 10.6 10.7 11.0
220 tons of/hour saving coals from boiler statistics tables of C power plant (kind of coal is a bituminous coal)
Time May June July September October December On average
Mix burning " ZLT " back actual consumption of coal (ton) 13646 14838 13698 13116 14725 14497 14087
Equal load is not mixed the required consumption of coal of burning " ZLT " (ton) 15595 16323 15891 14905 16714 16072 15918
Equal load is saved coal amount (per-cent) 12.5 9.1 13.8 12.0 11.9 9.8 11.5
As can be seen, mix and mix the burning thing with the equal interpolation " ZLT " of loading down after burning " ZLT " is mixed the burning thing from present embodiment, the coal saving rate of boiler is: A power plant 75 tons of/hour saving coals from boiler rates average out to 10.2; B power plant 220 tons of/hour saving coals from boiler rates average out to 11.0; C power plant 220 tons of/hour saving coals from boiler rates average out to 11.5.Proof mix burning " ZLT " mix burn thing after the saving coals from boiler rate obvious.
Embodiment 6 is the examples that reach fly ash in electric power plant carbon drop purpose with method of the present invention.
In the present embodiment, " ZLT " according to embodiment 4 mixes selecting materials and control method of burning thing.It is as shown in table 1 that " ZLT " mixes the concrete batching of burning thing:
Table 1
Raw material Shale Unslaked lime The silicon ash Carbide slag Powdered iron ore Phosphogypsum
Per-cent 12 77 2 5 2.5 1.5
" ZLT " mixes the proportioning of burning thing and raw coal: " ZLT " mixes and burns thing 19%, raw coal %81
During present embodiment carries out, when " ZLT " mixes and burns thing and burn in boiler with raw coal, heat absorption when the coal ash component decomposes, " ' mixing and burning thing is heat release with its reaction to ZLT, making the complete and reduction carbon residue of burning like this.
Following table is for mixing burning and not mixing burning " ZLT " and mix burning thing flyash loss on ignition experiment contrast table;
The kind of A power plant, coal is a bituminous coal
Group 1 2 3 4 5 6 On average
Do not mix burning " ZLT " powder ash loss on ignition (weight percent) 6.6 7.4 6.8 5.2 4.8 8.0 6.47
Mix burning " ZLT " powder ash loss on ignition (weight percent) 0.4 2.2 1.2 1.2 1.6 1.0 1.27
The kind of A power plant, coal is a bituminous coal
Group 1 2 3 4 5 6 On average
Do not mix burning " ZLT " powder ash loss on ignition (weight percent) 9.3 10.4 7.7 17.4 8.6 11.2 10.73
Mix burning " ZLT " powder ash loss on ignition (weight percent) 3.0 1.4 1.4 1.3 2.1 1.1 1.72
The kind of B power plant, coal is a hard coal
Group 1 2 3 4 5 6 On average
Do not mix burning " ZLT " powder ash loss on ignition (weight percent) 39.9 17.6 21.0 29.6 24.9 15.8 6.47
Mix burning " ZLT " powder ash loss on ignition (weight percent) 2.5 0.9 2.1 3.4 3.0 2.8 2.28
As can be seen, mix burning " ZLT " and mix that to burn thing flyash carbon drop situation obvious from above contrast, A power plant tests flyash average residual carbon content for the first time and reduces to 1.27% by 6.47%; A power plant tests flyash average residual carbon content for the second time and reduces to 1.72% by 10.73%; B fly ash in electric power plant average residual carbon content reduces to 2.28% by 6.74%, has reduced the carbon residue content of flyash significantly.
Embodiment 7 is the examples that reach " active furnace bottom slag " and traditional cement clinker proportioning production expansive cement with the concomitant product " active fly ash " that method of the present invention is produced.
In the present embodiment, " ZLT " mixes the selected starting material of burning thing batching has following several:
Shale: Sio 2Content 68% unslaked lime: CaO content 93%
Silicon ash: Sio 2Content 90% carbide slag
Powdered iron ore: Fe 2O 3Content 69% furnace phosphorus slag
Raw coal: thermal value 5970kcal/kg ash 23% elemental sulfur (S) 0.6%
It is as shown in table 1 that " ZLT " mixes the concrete batching of burning thing:
Table 1
Raw material Shale Unslaked lime The silicon ash Carbide slag Powdered iron ore Phosphogypsum Contain V 2O 5Waste residue
Per-cent 15 74 2 5 2 1.5 0.5
" ZLT " mixes the proportioning of burning thing and raw coal: " ZLT " mixes and burns thing 28%, raw coal 72%.
" ZLT " mix burn thing and raw coal in above ratio batching after, enter the boiler milling system grinding jointly, the coal dust that mill is got well is sent in the Pulverized Coal Bin of the #3-220t/h of A power plant pulverized coal firing boiler, sprays into the boiler furnace internal combustion through machine supplying powder.
In the present embodiment, normally move at boiler under the situation of heat supply generating and obtain active fly ash and active furnace bottom slag, fCaO content is at 1-4% in the active fly ash, and remaining carbon is at 0.5-3%, and fCaO content is at 0.1-2% in the active furnace bottom slag, and remaining carbon is at 0.1-1%.The tradition cement clinker is selected the cement clinker of certain cement mill ordinary production for use, and its performance is as shown in table 2:
Table 2
Ultimate compression strength (Mpa) Folding strength (Mpa)
Grog Label 3d 7d 28d 3d 7d 28d
A 625 33.8 47.5 65.1 6.4 7.8 9.1
B 625 32.4 46.5 68.1 6.7 7.9 8.8
The physicals that traditional grog in the last table 2 is milled into expansive cement by table 3 proportioning is shown in table 3, table 4:
Table 3
The cement numbering Proportioning The cement mill grog The high-sulfur modified coal ash Specific surface area m 2/kg High-sulfur modified coal ash SO 2Content Time of coagulation Stability (boil and boil) 1: 3 hard husky intensity Mpa of glue that practices
Grog The high-sulfur modified coal ash Gypsum
Folding strength Mpa Ultimate compression strength Mpa
Initial set n: min Final set n: min
3d 7d 28d 3d 7d 28d
D01 65 30 5 A A1 426 13.2 1∶48 3∶15 Qualified 5.0 6.5 7.9 27.2 42.4 60.8
D02 61 35 4 B 81 429 12.8 1∶24 3∶24 Qualified 4.8 6.2 7.8 26.4 40.6 58.6
Annotate: technical requirements: specific surface area＞400m 2/ kg, initial set＞20min final set＜10h.
Table 4
The cement numbering Clean slurry polar expansion %
Maintenance in the water The moisture maintenance
1d 3d 7d 14d 21d 28d 390d 1d 3d 7d 14d 21d 28d
D02 0.525 0.530 0.5 34 0.548 0.550 0.572 0.590 0.056 0.046 0.049 0.050 0.044 0.046
D02 0.625 0.634 0.642 0.654 0.662 0.674 0.681 0.045 0.048 0.039 0.038 0.045 0.042
Annotate: maintenance is starched polar expansion 1d only greater than 0.3%, and 3d is basicly stable, and the water hygroexpansivity generally fluctuates between 0.3-1.0%, and permanent stability are good.
As seen from the above table, active fly ash that the present invention produced and active furnace bottom slag and traditional cement clinker can be produced expansive cement according to a certain ratio, and label reaches GB 525# cement standard.
Embodiment 8 is the examples that reach power plant's flyash microballon enrichment and refinement purpose with method of the present invention.
In the present embodiment, mix according to " ZLT " of embodiment 1 and to burn the selecting materials of thing, proportioning, " ZLT " mixes and burns thing and coal proportioning and control method.
In the present embodiment, " ZLT " mixes the fineness of burning thing and coal mix grinding is 0.08 millimeter square hole sieve, and tailing over is 4.5%.
Table 1 is mixed burning thing front and back flyash technical performance index for mixing burning " ZLT ";
Table 1
Sequence number Title A factory B factory
Before mixing burning After mixing burning Before mixing burning After mixing burning
1 Fineness (0.08mm square hole sieve) (%) 11 4.6 12 4.4
2 Water demand ratio (%) 98 89 100 90
3 Loss on ignition (%) 3.84 1.06 22.61 2.00
4 Water content (%) 1.00 0.86 1.00 0.89
5 Coal conservation (%) 9.96 8.68
Table 2 is a superfine flyash product index after carbon drop, microballon enrichment and the refinement
Table 2
Sequence number Title Superfine index
1 Fineness (the 0.08mm square hole sieve tails over) (%) ≤5
2 Water demand ratio (%) ≤90
3 Loss on ignition (%) ≤3
4 Water content (%) ≤1
From above example as can be seen, with method of the present invention in boiler, mix burning " ZLT " mix burn thing after, the active fly ash that A power plant and B power plant produce reaches national superfine flyash standard.

Claims (8)

1, the method for a kind of coal purification of combustion and generation concomitant product, it is characterized in that in coal dust adding and a kind ofly mix the burning thing by containing " ZLT " that active silica material, unslaked lime, carbide slag, powdered iron ore, furnace phosphorus slag form by weight percentage, this is mixed and burns the adsorbed close formation " affinity particles " after the mix grinding homogenizing by a certain percentage of thing and coal dust, this " affinity particles " sprayed in coal-powder boiler or the cyclone furnace, under the state of " gas-solid liquid suspension reaction " " affinity calcining ", the furnace temperature of " affinity calcining " is 800-1340 ℃;
Said " ZLT " mixes the component of burning thing and the weight ratio of component is:
Contain active silica material 14～25%, unslaked lime 69～77%,
Carbide slag 2～5%, powdered iron ore 2～3%,
Furnace phosphorus slag 1.5～2%;
Said " ZLT " mixes the weight ratio of burning thing and coal dust is 19～30%:81～70%.
2,, it is characterized in that the said active silica material that contains is selected from one or more mixture in shale ore, potter's clay, silicon ash and the clay according to the coal purification of combustion of claim 1 and produce the method for concomitant product.
3, according to the coal purification of combustion of claim 1 and produce the method for concomitant product, it is characterized in that said " ZLT " mixes to burn in the thing also contains desulfurization catalyst.
4, according to the coal purification of combustion of claim 3 and produce the method for concomitant product, it is characterized in that said desulfurization catalyst is a Vanadium Pentoxide in FLAKES, content is to mix to burn 0.5% of thing.
5,, it is characterized in that said coal dust can be high heating value super sea coal or low heat value coal dust inferior according to the coal purification of combustion of claim 1 and produce the method for concomitant product.
6,, it is characterized in that said furnace phosphorus slag can use ardealite instead according to the coal purification of combustion of claim 1 and produce the method for concomitant product.
7, the concomitant product that produces of a kind of coal purification of combustion is characterized in that containing the component of following weight ratio:
Dicalcium Phosphate (Feed Grade) 5～75%, tricalcium aluminate 1～40%,
Aluminium ferrous acid four calcium 1～40%, aluminium ferrous acid calcium 1～30%,
Free lime 0.1～8%.
8, the application of the concomitant product of the coal purification of combustion of claim 7 generation is characterized in that this concomitant product can be used to produce the toughener of cement, concrete and gelatinous material.
CNB00103328XA 1999-10-22 2000-03-06 Clean combustion of coal and application and products of its companion substance Expired - Fee Related CN1152124C (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CNB00103328XA CN1152124C (en) 1999-10-22 2000-03-06 Clean combustion of coal and application and products of its companion substance
AU36542/00A AU3654200A (en) 1999-10-22 2000-04-06 Clean combustion of coal, utility of the concomitant product of the clean combustion and the product by using the concomitant product
PCT/CN2000/000079 WO2001030944A1 (en) 1999-10-22 2000-04-06 Clean combustion of coal, utility of the concomitant product of the clean combustion and the product by using the concomitant product

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CN99121977.5 1999-10-22
CN 99121977 CN1248614A (en) 1999-10-22 1999-10-22 Method for reducing carbon content in flyash by adding additives in coal and products
CNB00103328XA CN1152124C (en) 1999-10-22 2000-03-06 Clean combustion of coal and application and products of its companion substance

Publications (2)

Publication Number Publication Date
CN1294181A CN1294181A (en) 2001-05-09
CN1152124C true CN1152124C (en) 2004-06-02

Family

ID=25739224

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB00103328XA Expired - Fee Related CN1152124C (en) 1999-10-22 2000-03-06 Clean combustion of coal and application and products of its companion substance

Country Status (3)

Country Link
CN (1) CN1152124C (en)
AU (1) AU3654200A (en)
WO (1) WO2001030944A1 (en)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100384771C (en) * 2006-08-04 2008-04-30 郑东风 No-baking light foamed heat insulating and sound isolating material and its production process
CN101412633B (en) * 2008-11-17 2012-11-21 贵州开阳国华天鑫磷业有限公司 Method for preparing aerated concrete from phosphate slag
CN102515583B (en) * 2011-11-28 2013-07-31 峨眉山强华特种水泥有限责任公司 Method for producing low heat expansive cement
CN102515582B (en) * 2011-11-28 2013-07-31 峨眉山强华特种水泥有限责任公司 Low-heat micro-expansive cement
CN103896478A (en) * 2012-12-28 2014-07-02 代戈 Novel method for preparing HK ultra-fine fly ash glass beads
CN105198250B (en) * 2015-10-20 2017-09-29 河南理工大学 A kind of fluidized bed combustion coal ash/slag cement and preparation method thereof
CN105384375A (en) * 2015-12-14 2016-03-09 文登蓝岛建筑工程有限公司 Active admixture for building materials
CN109136542B (en) * 2018-09-30 2021-08-20 安徽工业大学 Emission reduction method for flue gas pollutants in iron ore sintering process
CN109553316A (en) * 2018-12-10 2019-04-02 福州大学 It is a kind of using carbide slag and flyash as the complex cement of mixing material
CN110372306A (en) * 2019-02-28 2019-10-25 四川新磷环保技术有限公司 A kind of method that yellow phosphorus furnace slag prepares foam section
CN110092615B (en) * 2019-05-16 2021-12-28 云南磷化集团有限公司 Artificial rockery bonsai stone and preparation method thereof
CN110330303B (en) * 2019-07-31 2022-03-29 河北充填采矿技术有限公司 Filling material and using method thereof
CN111056817A (en) * 2020-02-25 2020-04-24 和县明生环保材料有限责任公司 Preparation method of environment-friendly coal gangue-based hollow brick
CN113388427A (en) * 2021-06-22 2021-09-14 镇江市蓝火环保能源有限公司 Energy-saving coal powder and production method thereof
CN113656758B (en) * 2021-08-28 2024-02-23 西安热工研究院有限公司 Method for calculating burn-up rate of one-dimensional flame furnace for mixed coal
CN114317061B (en) * 2021-11-16 2023-01-24 华阳新材料科技集团有限公司 Chemical purification method for preparing ultra-low ash coal from clean coal
CN117350075B (en) * 2023-10-31 2024-04-02 上海全应科技有限公司 Soft measurement method for CFB boiler coal heating value and electronic equipment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128239A (en) * 1982-12-30 1984-07-24 住友セメント株式会社 Manufacture of specific cement using coal ash
DE3608920A1 (en) * 1986-03-18 1987-10-08 Manfred Ackermann METHOD FOR PRODUCING GRAINY MINERALS FROM CARBON COMBUSTION
CN86108840A (en) * 1986-12-31 1988-07-27 柏绿山 Coal combustion-assistant smoke-eliminating dust-removing powder and coal ash cement
CN1012951B (en) * 1987-02-18 1991-06-26 云南省建筑材料科学研究设计院 Process for producing cement by hypercalcium powdered coal ash
CN1063752A (en) * 1992-03-26 1992-08-19 清华大学 Jetting cyclone slag discharging coal combustion method and device
CN1089582A (en) * 1993-01-15 1994-07-20 成都市锦江区川建化工建材新技术开发部 Burning clinker of cement new technology-two proportioning processes

Also Published As

Publication number Publication date
CN1294181A (en) 2001-05-09
AU3654200A (en) 2001-05-08
WO2001030944A1 (en) 2001-05-03

Similar Documents

Publication Publication Date Title
CN1152124C (en) Clean combustion of coal and application and products of its companion substance
EP3724147B1 (en) Method for simultaneous exhaust gas cleaning and manufacturing of supplementary cementitious material
CN107056102B (en) System and method for producing sulphoaluminate cement and co-producing sulfur by utilizing desulfurized gypsum and aluminum ash
WO2007107111A1 (en) Mg-slag brick with high strength and method for preparing the same
CN101220312A (en) Combustion improver for catalytic combustion of blast furnace coal injection
CN112661424B (en) Environment-friendly cement and preparation method thereof
CN105198250A (en) FBC (fluidized bed combustion) ash containing cement and preparation method thereof
Wu et al. Utilizing residues of CFB co-combustion of coal, sludge and TDF as an alkali activator in eco-binder
CN1016598B (en) Process of sulfuic acid from supse
JP2019137579A (en) Method and apparatus for producing cement clinker
CN1330599C (en) Method for producing sulfuric acid associated with high Belite cement through anhydrite
CN104962338B (en) Slime combustion-supporting desulfurizing composite additive and preparing method thereof
CN106630706B (en) Glue the method that moist calcareous material prepares cement slurry
KR100554715B1 (en) Manufacture Method of Portland Cement clinker Using Waste Concrete powder
JP2014189439A (en) Method for manufacturing cement clinker
CN105585263A (en) Preparation method of cement clinker
CN1028984C (en) Producing bonding cement by fluidized bed boiler calcined marlite
CN101219866A (en) One-step desulfurization of breeze furnace and method for producing low heat cement with modified coal slag thereof
KR102288625B1 (en) Method of manufacturing concrete having low hydration-heat by using CGS and concrete thereof
JP5303716B2 (en) Modified ash, method for producing modified ash, and cement composition
CN1887769A (en) Production method of modified fly ash substituted cement clinker
RU2184094C2 (en) Method of production of portland cement clinker using boiler with circulating fluidized layer and method of boiler working with circulating fluidized layer
JP4164229B2 (en) Cement composition
KR101962847B1 (en) Manufacturing method of fly ash with high performance for low heat mixing cement
TWI755335B (en) Preparation method and product of low carbon emission hydraulic cement

Legal Events

Date Code Title Description
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
BB1A Publication of application
C06 Publication
PB01 Publication
C14 Grant of patent or utility model
GR01 Patent grant
ASS Succession or assignment of patent right

Owner name: ZHENG DONGFENG

Free format text: FORMER OWNER: ZHENG CHUNLEI

Effective date: 20110307

C41 Transfer of patent application or patent right or utility model
C53 Correction of patent for invention or patent application
CB03 Change of inventor or designer information

Inventor after: Zheng Dongfeng

Inventor before: Zheng Chunlei

Inventor before: Zheng Dongfeng

COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 100027 402, BUILDING 2, SANYUANLI SOUTH ALLEY, CHAOYANG DISTRICT, BEIJING TO: 100081 NO.12, UNIT 1, BUILDING 13, NO.A-2, WANSHOUSHI, HAIDIAN DISTRICT, BEIJING

TR01 Transfer of patent right

Effective date of registration: 20110307

Address after: 100081 No. 1, building 13, building 2, Wanshou temple, Haidian District, Beijing, No. 12

Patentee after: Zheng Dongfeng

Address before: 100027 Beijing City, Chaoyang District Sanyuan Street No. 2 building 402 South

Patentee before: Zheng Chunlei

DD01 Delivery of document by public notice

Addressee: Zheng Dongfeng

Document name: Notification of Passing Examination on Formalities

DD01 Delivery of document by public notice

Addressee: Zheng Dongfeng

Document name: Notification to Pay the Fees

DD01 Delivery of document by public notice

Addressee: Zheng Dongfeng

Document name: Notification of Termination of Patent Right

C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20040602

Termination date: 20140306