CN105670728B - The kaolin compound additive and preparation method of the raising domestic coke length of flame and application - Google Patents

The kaolin compound additive and preparation method of the raising domestic coke length of flame and application Download PDF

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CN105670728B
CN105670728B CN201610102995.1A CN201610102995A CN105670728B CN 105670728 B CN105670728 B CN 105670728B CN 201610102995 A CN201610102995 A CN 201610102995A CN 105670728 B CN105670728 B CN 105670728B
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compound additive
kaolin
flame
coal
coke
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CN105670728A (en
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张智聪
杜文广
刘守军
杨颂
上官炬
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Taiyuan Green Coke Energy Co Ltd
Taiyuan University of Technology
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Taiyuan Green Coke Energy Co Ltd
Taiyuan University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L5/00—Solid fuels
    • C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
    • C10L5/04—Raw material of mineral origin to be used; Pretreatment thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • 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
    • 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
    • C10L2200/0204—Metals or alloys
    • C10L2200/0209—Group I metals: Li, Na, K, Rb, Cs, Fr, Cu, Ag, Au
    • 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
    • C10L2200/0204—Metals or alloys
    • C10L2200/0213—Group II metals: Be, Mg, Ca, Sr, Ba, Ra, Zn, Cd, Hg
    • 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
    • C10L2200/0204—Metals or alloys
    • C10L2200/0236—Group VII metals: Mn, To, Re
    • 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
    • C10L2200/0254—Oxygen containing compounds
    • 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
    • C10L2200/0272—Silicon containing compounds
    • 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
    • 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
    • C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/18—Function and purpose of a components of a fuel or the composition as a whole for rendering the fuel or flame visible or for adding or altering its color
    • 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
    • C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/22—Function and purpose of a components of a fuel or the composition as a whole for improving fuel economy or fuel efficiency

Abstract

It is a kind of improve the domestic coke length of flame kaolin compound additive parts by weight group become 40~60 parts of kaolin, 20~30 parts of lime stone, 10~20 parts of red mud, 5~10 parts of manganese dioxide.Raw material sources of the present invention enrich extensively, cheap, are added directly in mixed coal, the domestic coke containing bauxite compound additive is made by high-temperature retorting, the length of flame can increase to 450~670mm from 100~200mm, and increase rate is up to 350~470mm, significant effect.

Description

The kaolin compound additive and preparation method of the raising domestic coke length of flame and application
Technical field
The present invention relates to a kind of kaolin compound additives and preparation method and application improving the domestic coke length of flame.
Background technology
The leading energy of the coal as China, main Land use systems are burning.The directly burning of a large amount of coals leads to gas Wait the problems such as variation, carbon cycle, environmental pollution and health hazard.Compared with industry and coal for power generation, civilian scattered burning coal is most Pipe consumption figure is relatively low, but belongs in line due to lacking devices, the flue gases such as effective flue gas ash removal, desulfurization, becomes China's atmosphere pollution One of primary discharge source.Therefore it is the key that improve atmospheric environment with the civilian scattered burning raw coal of replacement of fuel of cleaning, environmental protection.
Domestic coke is and to be aided with a small amount of coking coal, sulphur-fixing agent, carburant, combustion adjuvant etc. based on bunker coal (thermal coal), Using existing coke-oven plant's production equipment, pass through clean solid fuel obtained by high-temperature retorting.With blocking good, moderate strength, low The advantages that volatilization, low-sulfur discharge and be not easy slagging, is not necessarily to desulfurization equipment, and tail gas can meet discharging standards；And easy point Fire, continuous fiery ability is strong, heating rate is fast, firing duration is long, is the various ideal fuel of domestic life stove.
Conventional metallurgical coke is mainly used for blast furnace ironmaking and non-ferrous metal metallurgy, it is desirable that has high intensity and low reaction activity. During high-temperature retorting, volatile matter etc. constantly overflows mixed coal, and coke activity is caused constantly to decline；Simultaneously as process It is the high-graphitized process of a continuous closed pore, coke porosity is caused drastically to decline, causes the reduction of its reactivity.And make Then require its reactivity higher for fuel in favor of burning.Therefore coke to be made is as a kind of suitable domestic fuel, it is necessary to Improve the reactivity of domestic coke.The higher raw coal of volatility in addition, existing stove mostly burns, the length of flame is longer, Boiler thermal efficiency is high；However if traditional coke combustion, as fuel, only leans on radiant heat substantially without flame, it is existing There is the thermal efficiency of boiler relatively low.Therefore domestic coke is as a kind of fuel, it is necessary to by the introducing of additive, it is anti-to improve it Activity is answered, its flame height is increased, can be met as a kind of requirement of qualified domestic fuel.
The patent for improving catalytic coal gasifaction activity aspect, as CN201410548041.4 discloses a kind of raising coal catalysis gas Then the method for changing activity and catalyst recycling adds 2- by the method for dipping first by dirty coal pickling deliming in coal The potassium carbonate catalyst of 10wt% is remarkably improved the reactivity of coal；CN201310439546.2 discloses a kind of coal catalysis Gasifying catalyst and its preparation method and application, using cheap halogen ion metal salt as the presoma of catalyst, using pH value tune Agent is saved, effective metal component is supported on coal base by ion exchange technique, coal conversion can be effectively improved.These catalysis Gasifying agent is the product for coal exploitation, is directly supported into coal, and its reaction product is synthesis gas, dry without high temperature It evaporates；Since domestic coke needs the special process by high-temperature retorting, reactivity and fire must be increased in combustion process Flame length.Through retrieval, the additive for improving the domestic coke length of flame has not been reported.
Invention content
Add the object of the present invention is to provide a kind of kaolin of the good raising domestic coke length of flame of reactivity is compound Add agent and its preparation method and application.
Coal is when domestic stove burns, and especially civil heating hot-water boiler needs certain length of flame, because Traditional domestic stove presses high-volatile bituminous coal fuel design more.Bituminous coal ignition temperature it is low with flame is longer has with its high volatile It closes, in bituminous coal temperature-rise period, it is black smoke that volatile matter effusion, not up to burning point, which are the volatile matter escaped, is escaped after reaching burning point Volatile combustion formed flame.The volatile matter that bituminous coal escapes at a lower temperature is flue gas, seriously pollutes atmospheric environment.
Metallurgical coke volatile matter is very low, and only 1% or so, compact structure, reactivity is poor, and ignition temperature is higher and burning is without bright Aobvious flame, i.e. length of flame much shorter compared with bituminous coal, can not be in traditional domestic stove normal use.
After the civilian clean coke addition auxiliary agent of the present invention, civilian cleaning coke has more flourishing micro- compared with metallurgical coke Pore structure with compared with Large ratio surface (specific surface by<1m2/ g increases to 200m2/ g, the porosity are carried by 40% to 55%), reactivity also by The 20% of metallurgical coke is carried to 55% or more.Civilian cleaning coke as fuel in use, change flame formation mechenism, burning and Gasify while occurring, will gasification generation CO be become from volatile matter generation flame originally and form flame, flame elongates, and is applicable to respectively Kind domestic stove.
To achieve the goals above, the technical solution used in the present invention is as follows：
A kind of kaolin compound additive improving the domestic coke length of flame, parts by weight group become kaolin 40~60 Part, 20~30 parts of lime stone, 10~20 parts of red mud, 5~10 parts of manganese dioxide.
Preparation method of the present invention, includes the following steps：
(1) by kaolin, lime stone, red mud and the manganese dioxide additive raw material after drying respectively through thick broken, thin broken to grain Degree≤3mm；
(2) the additive raw material being crushed is weighed respectively, and is mixed, and is stirred evenly；
(3) the mixture stirred evenly makes the mesh (0.1mm) of raw material granularity≤150 through dry grinding；Then 260~300 It calcines 1~2 hour, is cooled to room temperature, as kaolin compound additive under the conditions of DEG C.
The application of kaolin compound additive of the present invention, includes the following steps：
By kaolin compound additive：Mixed coal weight ratio is 0.2~1.0:100, kaolin compound additive is added Into mixed coal, in gas retort completely cutting off air is heated to 900~1100 DEG C, and continuous heating 16~for 24 hours, then by red heat furnace charge Room temperature is down to through quenching process, then screened to get to the domestic coke containing kaolin compound additive after coming out of the stove.
The quality index of mixed coal is as described above：FCd>=50%, Vadf>=25%, Ad≤ 25%, Std＜ 1.5%.
As described above screening be will drop to room temperature furnace charge screening be 25-80mm granularities.
The prior art of the present invention is compared, and directly bring and the advantages of necessarily leading to is as follows with good effect：
In the methods of the invention, used kaolin compound additive, raw material sources enrich extensively, cheap, It is added directly in mixed coal, the domestic coke containing kaolin compound additive, the length of flame is made by high-temperature retorting 450~670mm can be increased to from 100~200mm, increase rate is up to 350~470mm, significant effect.
The domestic coke produced in the methods of the invention is compared with direct combustion of coke, in the premise for not changing existing stove Under, significantly improve domestic coke combustion flame length and reactivity；The efficiency of combustion that domestic coke can be improved, makes domestic coke Fully burning, to reduce the discharge capacity of waste, is conducive to environmental protection.
Specific implementation mode
The specific implementation mode of the present invention is made below and being further explained.
Embodiment 1
(1) by kaolin, lime stone, red mud and the manganese dioxide additive raw material after drying respectively through thick broken, thin broken to grain Degree≤3mm；
(2) the kaolin 60kg being crushed, lime stone 20kg, red mud 10kg, manganese dioxide 5kg are weighed respectively successively, and will It mixes, and stirs evenly；
(3) the mixture stirred evenly makes the mesh (0.1mm) of raw material granularity≤150 through dry grinding；Then in 260 DEG C of conditions Lower calcining 2 hours, is cooled to room temperature, as kaolin compound additive；
(4) as-fired coal material is by the jet coal of 20wt%, the rich coal of the meager coal of 15wt%, 1/3 coking coal of 30wt%, 20wt% Coking coal cooperation with 15wt% forms mixed coal；The quality index of its mixed coal is：Vadf30.0%, Ad13.5%, FCd60.6%, St,d0.67%；Adhesive index=74, fineness (≤3mm)=73.6%；
(5) kaolin compound additive is pressed：Mixed coal weight ratio is 0.2:100, the kaolin compound additive made is added It is added in mixed coal, air is completely cut off in gas retort and is heated to 1100 DEG C, continuous heating 16h, after then red heat furnace charge is come out of the stove It is down to room temperature, then the screened civilian coke containing kaolin compound additive to get to granularity for 25-80mm through quenching process Charcoal.
Comparative example：Any additive is not added in mixed coal, air is completely cut off in gas retort and is heated to 1100 DEG C, is persistently added Hot 16h is down to room temperature after then red heat furnace charge is come out of the stove through quenching process, then screened, and gained granularity is the coke of 25-80mm Coke is used as a contrast.
The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2Respectively to the civilian coke of gained in civilian reverberatory furnace And control carries out combustion test with coke, with 0-500mm Steel Ruler test for flame height, test result is as shown in table 1.
Table 1 adds compound additive and the length of flame comparison for being not added with compound additive coke
Test group Length of flame mm Raising value mm
Control is burnt 100 -
Add the civilian coke of compound additive 450 350
Embodiment 2
(1) by kaolin, lime stone, red mud and the manganese dioxide additive raw material after drying respectively through thick broken, thin broken to grain Degree≤3mm；
(2) the kaolin 55kg being crushed, lime stone 22.5kg, red mud 12.5kg, manganese dioxide are weighed respectively successively 6.3kg, and mixed, it stirs evenly；
(3) the mixture stirred evenly makes the mesh (0.1mm) of raw material granularity≤150 through dry grinding；Then in 270 DEG C of conditions Lower calcining 1.8 hours, is packed, as kaolin compound additive after being cooled to room temperature；
(4) as-fired coal not gluing by the weakly caking coal of 30wt%, the jet coal of 40wt%, the gas rich coal of 20wt% and 10wt% Coal cooperation forms mixed coal；Its quality index (wt%)：Vadf35.0%, Ad13.5%, FCd56.2%, St,d0.84%, it bonds Index G=40, fineness (≤3mm)=86.5%；
(5) kaolin compound additive is pressed：Mixed coal weight ratio is 0.4:100, the kaolin compound additive made is added It is added in mixed coal, air is completely cut off in gas retort and is heated to 1050 DEG C, continuous heating 18h, after then red heat furnace charge is come out of the stove It is down to room temperature, then the screened civilian coke containing kaolin compound additive to get to granularity for 25-80mm through quenching process Charcoal.
Comparative example：Any additive is not added in mixed coal, air is completely cut off in gas retort and is heated to 1050 DEG C, is persistently added Hot 18h is down to room temperature after then red heat furnace charge is come out of the stove through quenching process, then screened, and gained granularity is the coke of 25-80mm Coke is used as a contrast.
The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2Respectively to the civilian coke of gained in civilian reverberatory furnace And control carries out combustion test with coke, with 0-500mm Steel Ruler test for flame height, test result is as shown in table 2.
Table 2 adds compound additive and the length of flame comparison for being not added with compound additive coke
Test group Length of flame mm Raising value mm
Control is burnt 125 -
Add the civilian coke of compound additive 505 380
Embodiment 3
(1) by kaolin, lime stone, red mud and the manganese dioxide additive raw material after drying respectively through thick broken, thin broken to grain Degree≤3mm；
(1) the kaolin 50kg being crushed, lime stone 250kg, red mud 15kg, titanium dioxide are weighed respectively successively
Manganese 7.5kg, and mixed, it stirs evenly；
(3) the mixture stirred evenly makes the mesh (0.1mm) of raw material granularity≤150 through dry grinding；Then in 280 DEG C of conditions Lower calcining 1.5 hours, is packed, as kaolin compound additive after being cooled to room temperature；
(4) as-fired coal material is by the jet coal of 20wt%, the rich coal of the meager coal of 15wt%, 1/3 coking coal of 30wt%, 20wt% Coking coal cooperation with 15wt% forms mixed coal；The quality index of its mixed coal is：Vadf30.0%, Ad13.5%, FCd60.6%, St,d0.67%；Adhesive index=74, fineness (≤3mm)=73.6%；
(5) kaolin compound additive is pressed：Mixed coal weight ratio is 0.6:100, the kaolin compound additive made is added It is added in mixed coal, air is completely cut off in gas retort and is heated to 1000 DEG C, continuous heating 20h, after then red heat furnace charge is come out of the stove It is down to room temperature, then the screened civilian coke containing kaolin compound additive to get to granularity for 25-80mm through quenching process Charcoal.
Comparative example：Any additive is not added in mixed coal, air is completely cut off in gas retort and is heated to 1000 DEG C, is persistently added Hot 20h is down to room temperature after then red heat furnace charge is come out of the stove through quenching process, then screened, and gained granularity is the coke of 25-80mm Coke is used as a contrast.
The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2Respectively to the civilian coke of gained in civilian reverberatory furnace And control carries out combustion test with coke, with 0-500mm Steel Ruler test for flame height, test result is as shown in table 3.
Table 3 adds compound additive and the length of flame comparison for being not added with compound additive coke
Test group Length of flame mm Raising value mm
Control is burnt 560 -
Add the civilian coke of compound additive 150 410
Embodiment 4
(1) by kaolin, lime stone, red mud and the manganese dioxide additive raw material after drying respectively through thick broken, thin broken to grain Degree≤3mm；
It is (2) secondary to weigh the kaolin 45kg being crushed, lime stone 27.5kg, red mud 17.5kg, manganese dioxide 8.7kg respectively, And mixed, it stirs evenly；
(3) the mixture stirred evenly makes the mesh (0.1mm) of raw material granularity≤150 through dry grinding；Then in 290 DEG C of conditions Lower calcining 1.3 hours, is packed, as kaolin compound additive after being cooled to room temperature；
(4) as-fired coal not gluing by the weakly caking coal of 30wt%, the jet coal of 40wt%, the gas rich coal of 20wt% and 10wt% Coal cooperation forms mixed coal；Its quality index (wt%)：Vadf35.0%, Ad13.5%, FCd56.2%, St,d0.84%, it bonds Index G=40, fineness (≤3mm)=86.5%；
(5) kaolin compound additive is pressed：Mixed coal weight ratio is 0.8:100, the kaolin compound additive made is added It is added in mixed coal, air is completely cut off in gas retort and is heated to 950 DEG C, continuous heating 22h is passed through after then red heat furnace charge is come out of the stove Quenching process is down to room temperature, then the screened civilian coke containing kaolin compound additive to get to granularity for 25-80mm Charcoal.
Comparative example：Any additive is not added in mixed coal, air is completely cut off in gas retort and is heated to 950 DEG C, is persistently added Hot 22h is down to room temperature after then red heat furnace charge is come out of the stove through quenching process, then screened, and gained granularity is the coke of 25-80mm Coke is used as a contrast.
The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2Respectively to the civilian coke of gained in civilian reverberatory furnace And control carries out combustion test with coke, with 0-500mm Steel Ruler test for flame height, test result is as shown in table 4.
Table 4 adds compound additive and the length of flame comparison for being not added with compound additive coke
Test group Length of flame mm Raising value mm
Control is burnt 615 -
Add the civilian coke of compound additive 175 440
Embodiment 5
(1) by kaolin, lime stone, red mud and the manganese dioxide additive raw material after drying respectively through thick broken, thin broken to grain Degree≤3mm；
(2) the kaolin 40kg being crushed, lime stone 30kg, red mud 20kg, manganese dioxide 10kg are weighed respectively successively, and It is mixed, is stirred evenly；
(3) the mixture stirred evenly makes the mesh (0.1mm) of raw material granularity≤150 through dry grinding；Then in 300 DEG C of conditions Lower calcining 1 hour, is packed, as kaolin compound additive after being cooled to room temperature；
(4) as-fired coal material is by the jet coal of 20wt%, the rich coal of the meager coal of 15wt%, 1/3 coking coal of 30wt%, 20wt% Coking coal cooperation with 15wt% forms mixed coal；The quality index of its mixed coal is：Vadf30.0%, Ad13.5%, FCd60.6%, St,d0.67%；Adhesive index=74, fineness (≤3mm)=73.6%；
(5) kaolin compound additive is pressed：Mixed coal weight ratio is 1.0:100, the kaolin compound additive made is added It is added in mixed coal, air is completely cut off in gas retort and is heated to 900 DEG C, continuous heating for 24 hours, passes through after then red heat furnace charge is come out of the stove Quenching process is down to room temperature, then the screened civilian coke containing kaolin compound additive to get to granularity for 25-80mm Charcoal.
Comparative example：Any additive is not added in mixed coal, air is completely cut off in gas retort and is heated to 900 DEG C, is persistently added Heat for 24 hours, is down to room temperature, then screened after then red heat furnace charge is come out of the stove through quenching process, and gained granularity is the coke of 25-80mm Coke is used as a contrast.
The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2Respectively to the civilian coke of gained in civilian reverberatory furnace And control carries out combustion test with coke, with 0-500mm Steel Ruler test for flame height, test result is as shown in table 5.
Table 5 adds compound additive and the length of flame comparison for being not added with compound additive coke
Test group Length of flame mm Raising value mm
Control is burnt 670 -
Add the civilian coke of compound additive 200 470
After can be seen that addition kaolin compound additive by Examples 1 to 5 experimental result, significantly improve civilian The length of flame of coke so that domestic coke efficiency of combustion higher, adaptability is wider, ensure that domestic coke as a kind of fuel Application.

Claims (3)

1. a kind of application for the kaolin compound additive improving the domestic coke length of flame, it is characterised in that including walking as follows Suddenly：
By kaolin compound additive：Mixed coal weight ratio is 0.2~1.0:100, kaolin compound additive is added to and is matched It closes in coal, air is completely cut off in gas retort and is heated to 900~1100 DEG C, continuous heating 16~for 24 hours, then red heat furnace charge is come out of the stove It is down to room temperature by quenching process, then screened to get to the domestic coke containing kaolin compound additive；
The parts by weight group of the kaolin compound additive become 40~60 parts of kaolin, 20~30 parts of lime stone, red mud 10~ 20 parts, 5~10 parts of manganese dioxide；
The quality index of the mixed coal is：FCd>=50%, Vadf>=25%, Ad≤ 25%, Std＜ 1.5%.
2. a kind of application of kaolin compound additive improving the domestic coke length of flame as described in claim 1, special Sign is that the preparation method of kaolin compound additive is as follows：
By kaolin, lime stone, red mud and the manganese dioxide additive raw material after drying respectively through thick broken, thin broken to granularity≤ 3mm；
(2) the additive raw material being crushed is weighed respectively, and is mixed, and is stirred evenly；
(3) the mixture stirred evenly makes raw material granularity≤0.1mm through dry grinding, is then calcined under the conditions of 260~300 DEG C It 1~2 hour, is cooled to room temperature, as kaolin compound additive.
3. a kind of application of kaolin compound additive improving the domestic coke length of flame as described in claim 1, special Sign be it is described screening be will drop to room temperature furnace charge screening be 25-80mm granularities.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1489690A (en) * 1976-05-25 1977-10-26 Coal Ind Briquetting coal
CN1958757A (en) * 2006-11-27 2007-05-09 李军 Combustion supporting, coal saving, modified additive
CN102212406A (en) * 2011-04-25 2011-10-12 山东大学 Method for preparing sulfur-fixing agent by taking red mud in alumina plant as additive as well as product and application of sulfur-fixing agent
CN102311835A (en) * 2011-08-09 2012-01-11 圣永业（厦门）能源集团股份有限公司 Fire coal synergist

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1489690A (en) * 1976-05-25 1977-10-26 Coal Ind Briquetting coal
CN1958757A (en) * 2006-11-27 2007-05-09 李军 Combustion supporting, coal saving, modified additive
CN102212406A (en) * 2011-04-25 2011-10-12 山东大学 Method for preparing sulfur-fixing agent by taking red mud in alumina plant as additive as well as product and application of sulfur-fixing agent
CN102311835A (en) * 2011-08-09 2012-01-11 圣永业（厦门）能源集团股份有限公司 Fire coal synergist

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