CN107384461A - A kind of civilian clean coke and its processing technology - Google Patents

A kind of civilian clean coke and its processing technology Download PDF

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Publication number
CN107384461A
CN107384461A CN201710755040.0A CN201710755040A CN107384461A CN 107384461 A CN107384461 A CN 107384461A CN 201710755040 A CN201710755040 A CN 201710755040A CN 107384461 A CN107384461 A CN 107384461A
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China
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coal
parts
lignite
processing technology
clean coke
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CN201710755040.0A
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Inventor
杜文广
刘守军
张智聪
杨颂
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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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Priority to CN201710755040.0A priority Critical patent/CN107384461A/en
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B57/00Other processes not covered before; Features of destructive distillation processes in general
    • C10B57/04Other processes not covered before; Features of destructive distillation processes in general using charges of special composition
    • C10B57/06Other processes not covered before; Features of destructive distillation processes in general using charges of special composition containing additives

Abstract

A kind of civilian clean coke include primary quality measure be caloric value >=5700kcal/kg, ash content≤23%, volatile matter≤5%, ash fusion point >=1280 DEG C, crushing strength >=75%, sulfur-fixing rate >=95%, ignition temperature≤420 DEG C, reactivity >=40%, than 15~35m of surface2/g.The present invention has the advantages of easily igniting, flame is long, programming rate is fast, the long desulfurized effect of firing duration is good.

Description

A kind of civilian clean coke and its processing technology
Technical field
The present invention relates to a kind of civilian clean coke and its processing technology.
Background technology
Coal burning is that quite long-term obtains the major way of the energy at present or even from now in China, and a large amount of coals directly fire Burn dust, sulfur dioxide, nitrogen oxides of discharge etc. and serious harm is caused to ecological environment, especially atmospheric environment, lead Cause China's air environmental pollution is serious, and haze weather takes place frequently.Based on pollution that caused by coal burning present situation, country has successively put into effect a series of method Rule and regulation, and take strong punitive measures.Although aggravation of the implementation of these regulations to pollution that caused by coal burning degree is played Certain containment effect, but still poor very remote of the distance environmental objective to be reached.
In fact, rural household fire coal environmental pollution can not be ignored.According to initial estimate, northern country often burns 1 ton of height Volatilize raw coal, it will discharges more than 2.5 tons of carbon dioxide (carbon emission coefficient 0.67), more than 150 kilograms other stain thing (oxidation of coal rate 0.85).Civilian scattered burning coal consumption is 1.6 hundred million tons within 2014, the 3.8% of national coal consumption is only accounted for, with sulfur dioxide Exemplified by discharge, power plant of China annual emissions are 2,000,000 tons, and civilian scattered burning is then up to 3,200,000 tons, is the 1.6 of power plant emission total amount Times.In addition, a series of problems, such as smoke contamination of civilian scattered burning coal, nitrogen oxides pollution, cinder pollution, is to ecological environment Destroy even more inestimable.However, being influenceed by factors such as region, economy, culture, solve very difficult.Want from root Solve the problems, such as the pollution that caused by coal burning of rural area and samll cities and towns in sheet, provide high-quality, low price for these areas, the alternative fuel of cleaning is to work as Business is anxious.
In order to solve the pollution problem of scattered burning coal, China have developed moulded coal 70~eighties of 20th century, but develop It is more slow.Moulded coal is using fine coal as primary raw material, and the proportioning, mechanical strength and shape size as required by particular use are through machine Tool processing is compressing, with the coal finished product that some strength and size and shape are different.Moulded coal needs to add a certain proportion of Binding agent and combustion-supporting agent for fuel coal, the shortcomings that influenceing its popularization, mainly have:
1st, calorific value is relatively low, and moulded coal needs to add a large amount of clays as binding agent, calorific value 4000~5000kcal/kg it Between.
2nd, ignition point is high, is not easy to ignite, and flame is short, it is slow to get angry;Easy cutoff during blowing out, burn unnet, phosphorus content in lime-ash It is high.
3rd, captured sulfur result is poor, adds the moulded coal of sulphur-fixing agent, and sulfur-fixing rate typically only has 45% or so.
Patent on combustion-supporting agent for fuel coal is a lot, and as CN90105106.3 discloses a kind of combustion-supporting agent for fuel coal, it contains There are three kinds of boron mud, lime stone, bauxite, white clay, manganese slag, iron oxide, canebreak and sodium carbonate, sodium nitrate, sodium chloride sodium At least one of salt, the combustion adjuvant can obviously improve combustion position, improve stove fire temperature;CN97105154.2 discloses a kind of suitable For the combustion-supporting agent for fuel coal of a variety of coals, mine tailings, manganese dioxide, production potassium bichromate are selected by boron mud, Calcium Carbide Ash, lime stone, iron Waste residue, produce sodium dichromate waste residue, bauxite, sodium hydroxide, sodium carbonate, sodium nitrate, sodium oxide molybdena and canebreak press one Certainty ratio forms, and is well mixed combustion adjuvant by a certain percentage with coal during use;CN201310417513.8 discloses one Kind efficient energy-saving combustion-supporting agent for fuel coal and preparation method thereof, its formula is made up of zinc oxide and manganese dioxide, can improve burning of coal Activity and ignition performance, flame temperature.These combustion adjuvants are the products for coal-fired exploitation, mostly using the skill for helping oxygen to burn Art principle, is directly added into fire coal, promotes coal fully to burn, and plays a part of combustion-supporting, energization, economizes on coal.Due to civilian clean burnt Charcoal needs the special process by high-temperature retorting, and most of component in combustion-supporting agent for fuel coal can fail because of pyrolytic, no longer With combustion-supporting ability;Therefore, it is impossible to use existing combustion-supporting agent for fuel coal.
The content of the invention
It is an object of the invention to provide a kind of easily igniting, flame is long, programming rate is fast, the long desulfurized effect of firing duration Good civilian clean coke and its processing technology.
Be present significant difference in the combustion adjuvant that the present invention is reported using lignite with existing literature, be mainly manifested in:1) reduce The mechanism of fiery temperature is different.Traditional combustion-supporting agent for fuel coal itself is combustibles, because its ignition temperature is low, is ignited coal by spontaneous combustion, because This, adds absolute prohibition high-temperature process after combustion adjuvant, otherwise will lose combustion-supporting effect;The combustion-supporting composite oxides of coming from of the present invention Catalytic action.First under high-temperature retorting reducing condition, coke surface is acted on being internally formed by the catalytic gasification of auxiliary agent Carbon defects, turn into the firing point of oxidizing fire;In addition, composite assistant under high temperature reducing atmospheres, can form a small amount of microcrystalline, Meet oxygen easily combustion heat release and form localized hyperthermia's point, so as to the coke that ignites.Lignite is as reducing agent and activator, added to the people With in coke raw material, the formation of carbon defects and microcrystalline is promoted in high-temperature retorting, with compound additive it is other into Divide one to work, reduce the ignition temperature of domestic coke.2) it is different to add the stage.Traditional combustion-supporting agent for fuel coal is more before moulded coal preparation Add, then blended, cohesive, cold moudling;Or directly enter stove burning after being mixed with scattered coal.The auxiliary agent of the present invention is matched somebody with somebody in destructive distillation Added during coal, it is blended, make firm by ramming, high-temperature retorting turns into civilian clean coke.
Lignite, also known as bavin coal, it is a kind of rudimentary coal of degree of coalification between peat and pitch coal, is peat through diagenesis The humic coal formed is acted on, degree of coalification is minimum, brown, dark brown or black, general dim or in pitchy luster, does not have viscous Knot property, activity is high, and chemical reactivity is strong.China's lignite reserves account for the 16% of world's lignite gross reserves, account for national coal reserves China's lignite annual production is up to 8.9 hundred million tons within 1/8 or so, 2015.The quality index of lignite is:Mad< 20%, Vdaf> 40%, Ad < 24%, St,d< 0.7%.
The present invention first compounds lignite and lime stone, potassium feldspar and manganese dioxide for increasing civilian clean coke ratio table Area, reduce its ignition temperature.
To achieve these goals, civilian clean coke of the invention (such as jet coal, is not glued with height volatilization thermal coal Coal, weakly caking coal, meager coal etc.) based on, it is aided with the mixed coal that a small amount of coking coal or rich coal are formed, lignite compound additive and solid sulphur are compound Auxiliary agent, formed through high-temperature retorting, its primary quality measure is as follows:Caloric value (Qnet,ar) >=5700kcal/kg, ash content (Ad)≤ 23%th, volatile matter (Vd)≤5%, ash fusion point (ST) >=1280 DEG C, crushing strength (M25) >=75%, sulfur-fixing rate (RS) >=95% (1050 DEG C of ignition temperature), ignition temperature (T)≤420 DEG C, reactive (CRI) >=40%, than surface (S)=15~35m2/g。
Wherein lignite compound additive:Gu sulphur complexing agent:Mixed coal weight ratio is 2.0~15.0:4.0~10.0:100.
Based on height volatilization thermal coal (such as jet coal, dross coal, weakly caking coal, meager coal), it is aided with a small amount of coking coal or rich coal It is FC to carry out proportioning and form technical indicatord>=50%, Vdaf>=25%, Ad≤ 11.5%, Std< 1.0% mixed coal.
A kind of processing technology of civilian clean coke of the present invention, comprises the following steps:
By lignite compound additive:Gu sulphur complexing agent:Mixed coal weight ratio is 2.0~15:4.0~10:100, by lignite Compound additive and solid sulphur complexing agent are added in mixed coal, and air is completely cut off in gas retort and is heated to 900~1100 DEG C, is persistently added 16~24h of heat, normal temperature is down to after then red heat furnace charge is come out of the stove through quenching process, then screened, that is, obtains civilian clean coke.
The quality index of mixed coal is:FCd>=50%, Vdaf>=25%, Ad≤ 11.5%, ST, d< 1.0%.
The parts by weight composition of the lignite compound additive is 50~70 parts of lignite, 20~30 parts of lime stone, potassium feldspar 10 ~20 parts, 5~10 parts of manganese dioxide, its preparation method comprises the following steps:
(1) by lime stone, potassium feldspar and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm;
(2) the additive raw material and lignite crushed is weighed respectively, and is mixed, and is stirred;
(3) the compound to stir is dried 1~2 hour under the conditions of 100~150 DEG C, then through dry grinding, makes raw material The mesh (0.1mm) of granularity≤150;It is subsequently cooled to normal temperature, as lignite compound additive.
The solid sulphur complexing agent includes calcium base barium manganese aluminium compound additive, its parts by weight composition be 60~80 parts of lime stone, 20~30 parts of barium slag, 10~20 parts of manganese ore, 5~10 parts of aluminum oxide.Specific preparation method is shown in patent CN201610102965.0;Calcium base potassium magnesium silicon compound additive, its parts by weight composition for 60~80 parts of lime stone, potassium feldspar 10~ 20 parts, 0~20 part of silica 1,5~10 parts of magnesium carbonate.Specific preparation method is shown in patent CN201610102964.6.
Described screening be down to normal temperature furnace charge screening be 25-80mm granularities.
The present invention compared with prior art, it is that it directly brings and the advantages of necessarily lead to it is as follows with good effect:
In the methods of the invention, used lignite compound additive and solid sulphur complexing agent, and raw material sources enrich extensively, It is cheap, it is added directly in mixed coal, by civilian clean coke made from high-temperature retorting, its ignition temperature is 360~ 420 DEG C, it is significantly less than metallurgical coke, significant effect;Compared with direct burning coal, oxysulfide emission reduction more than 90%, flue dust subtracts Row more than 96%, to solving surrounding city life in the countryside coal, improve rural area and city environmental quality, reducing haze weather has Major and immediate significance.
The civilian clean coke of the present invention is to be with height volatilization thermal coal (such as jet coal, dross coal, weakly caking coal, meager coal) It is main, it is aided with a small amount of coking coal, rich coal and lignite compound additive and solid sulphur composite assistant, is done using conventional metallurgical coke oven through high temperature Evaporate and form.There is blocking good, moderate strength, low volatilization, the discharge of low stain thing and be not easy slagging, without desulphurization denitration cigarette Gas disposal facility, tail gas can meet discharging standards;And easily light a fire, it is continuous that fiery ability is strong, flame is long, programming rate is fast, Firing duration is grown, and is the various preferable fuel of domestic life stove.
Because feed coal property is different from proportioning, processing technology is different, causes civilian clean coke physico-chemical parameter and metallurgy There is larger difference in burnt, moulded coal, form the product of uniqueness.It is mainly manifested in following several respects:
1. gap structure is flourishing, specific surface area is much larger than metallurgical coke (S=7.3m2/ g), meet that civilian clean fuel is low The basic demand of fiery temperature, high burn rate, ignition temperature are less than metallurgical coke and moulded coal;Moulded coal gap structure is least flourishing.
2. reactivity be much larger than metallurgical coke (CRI≤35%), meet it is on fire it is fast, afterflame ability is strong, flame length is wanted substantially Ask;Moulded coal reactivity is worst.
3. due to adding special high temperature, high efficiency composition sulphur-fixing agent, civilian clean coke high-temperature captured sulfur result is best, adds The moulded coal effect of sulphur-fixing agent is taken second place, and metallurgical coke captured sulfur result is worst.
4. civilian clean coke calorific capacity and volatile matter are moderate, volatile matter is higher than metallurgical coke, but is less than moulded coal;Calorific capacity is low In metallurgical coke, but it is higher than moulded coal, meets the basic demand of civilian clean fuel.
Embodiment
Embodiment of the invention is made below and further being illustrated.
Embodiment 1
(1) by lime stone, potassium feldspar and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm;
(2) weigh the lime stone 20kg crushed, potassium feldspar 10kg, manganese dioxide 5kg respectively successively, while weigh lignite (quality index:Mad13.35%, Vdaf40.25%, Ad16.93%, St,d0.21%) 70kg, mixed, and stirred equal It is even;
(3) the compound to stir is dried 2 hours under the conditions of 100 DEG C, then through dry grinding, makes raw material granularity≤150 Mesh (0.1mm);It is subsequently cooled to normal temperature, as lignite compound additive (concrete composition:FCd30.9wt%, Vd30.2wt%, CaCO318.2wt%, K2O1.6wt%, MnO24.8wt%, MgO0.2wt%, Al2O32.0wt%, SiO29.6wt%, Fe2O30.1wt%, CaO2.1wt%, St,d0.4wt%).
(4) by dried lime stone, barium slag, manganese ore and aluminum oxide additive raw material respectively through thick broken, thin broken to granularity ≤3mm;
(5) weigh the lime stone 80kg crushed, barium slag 20kg, manganese ore 10kg, aluminum oxide 5kg respectively successively, and by its Mix, stir;
(6) the compound to stir 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 normal temperature, as calcium base barium manganese aluminium compound additive (concrete composition:CaCO366.3wt%, BaCO35.2wt%, BaSO45.5wt%, BaSO30.6wt%, MnO26.9wt%, MnO0.9wt%, Al2O37.1wt%, SiO25.4wt%, Fe2O31.4wt%, MgO0.6wt%).
As-fired coal material by 25wt% jet coal, 10wt% meager coal, 30wt% 1/3 coking coal, 20wt% rich coal Coordinate with 15wt% coking coal and form mixed coal;The quality index of its mixed coal is:Vdaf30.0%, Ad11.5%, FCd62.6%, St,d0.67%;Adhesive index=71, fineness (≤3mm)=73.6%;
(8) lignite compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 10:4:100, the lignite made is compound Additive, calcium base barium manganese aluminium compound additive are added in mixed coal, and air is completely cut off in gas retort and is heated to 1100 DEG C, is continued 16h is heated, normal temperature is down to through quenching process after then red heat furnace charge is come out of the stove, then it is screened, obtain the people that granularity is 25-80mm With clean coke.The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2To civilian Jiao of gained in civilian reverberatory furnace Burnt, test its pollutant effulent, compared with direct fire coal, oxysulfide emission reduction 90.4%, flue dust emission reduction 96%.
Its primary quality measure is as follows:
Index Unit The technical indicator of the present invention Measured value
Qnet,ar kcal/kg ≥5700 5967
Ad % ≤23 19.7
Vd % ≤5 4.3
ST ≥1280 1346
M25 % ≥75 75.4
RS(1050 DEG C of ignition temperature) % ≥95 95.4
T ≤420 364
CRI % ≥40 57.4
S m2/g 15-35 34.6
Embodiment 2
(1) by lime stone, potassium feldspar and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm;
(2) weigh the lime stone 22.5kg crushed, potassium feldspar 13kg, manganese dioxide 6.3kg respectively successively, weigh simultaneously Lignite (quality index:Quality index:Mad9.29%, Vdaf44.53%, Ad17.66%, St,d0.32%) 65kg, it is mixed in Together, and stir;
(3) the compound to stir is dried 1.8 hours under the conditions of 112.5 DEG C, then through dry grinding, makes raw material granularity ≤ 150 mesh (0.1mm);It is subsequently cooled to normal temperature, as lignite compound additive (concrete composition:FCd30.1wt%, Vd20.3wt%, CaCO320.1wt%, K2O2.1wt%, MnO25.9wt%, MgO0.2wt%, Al2O32.5wt%, SiO214.4wt%, Fe2O30.1wt%, CaO4.1wt%, St,d0.1wt%).
(4) the additive raw materials such as dried lime stone, potassium feldspar, silica and carbonic acid are passed through into thick broken, thin broken extremely respectively Granularity≤3mm;
(5) the lime stone 75kg crushed, potassium feldspar 12.5kg, silica 1 2.5kg, magnesium carbonate are weighed respectively successively 6.3kg, and mixed, stir;
(6) the compound to stir 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 calcium base potassium magnesium silicon compound additive (concrete composition after being cooled to normal temperature: CaCO367.2wt%, MgCO35.9wt%, K2O1.8wt%, Na2O0.1wt%, Al2O33.0wt%, SiO220.9wt%, Fe2O30.5wt%, MgO0.6wt%).
(7) as-fired coal not gluing by 25wt% weakly caking coal, 45wt% jet coal, 20wt% gas rich coal and 10wt% Coal, which coordinates, forms mixed coal;Its quality index (wt%):Vdaf35.0%, Ad11.5%, FCd58.2%, St,d0.84%, bond Index G=44, fineness (≤3mm)=86.5%;
(8) lignite compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 7.8:5.5:100, the lignite that will be made Compound additive, calcium base potassium magnesium silicon compound additive are added in mixed coal, and air is completely cut off in gas retort and is heated to 1050 DEG C, Continuous heating 18h, normal temperature is down to through quenching process after then red heat furnace charge is come out of the stove, then it is screened, it is 25-80mm to obtain granularity Civilian clean coke.The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2To the gained people in civilian reverberatory furnace Combustion test is carried out with Jiao, tests its pollutant effulent, compared with direct fire coal, oxysulfide emission reduction 91.3%, flue dust emission reduction 96.5%.
Its primary quality measure is as follows:
Symbol Unit The technical indicator of the present invention Measured value
Qnet,ar kcal/kg ≥5700 5875
Ad % ≤23 21.1
Vd % ≤5 4.1
ST ≥1280 1331
M25 % ≥75 77.6
RS(1050 DEG C of ignition temperature) % ≥95 96.3
T ≤420 373.5
CRI % ≥40 53.2
S m2/g 15-35 31.3
Embodiment 3
(1) by lime stone, potassium feldspar and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm;
(2) weigh the lime stone 25kg crushed, potassium feldspar 15kg, manganese dioxide 7.5kg respectively successively, while weigh brown Coal (quality index:Quality index:Mad10.25%, Vdaf44.82%, Ad16.98%, St,d0.68%) 60kg, it is mixed in one Rise, and stir;
(3) the compound to stir is dried 1.5 hours under the conditions of 125 DEG C, then through dry grinding, make raw material granularity≤ 150 mesh (0.1mm);It is subsequently cooled to normal temperature, as lignite compound additive (concrete composition:FCd25.3wt%, Vd20.5wt%, CaCO322.2wt%, K2O2.4wt%, MnO27.0wt%, MgO0.2wt%, Al2O32.9wt%, SiO215.4wt%, Fe2O30.1wt%, CaO3.9wt%, St,d0.2wt%).
(4) by dried lime stone, barium slag, manganese ore and aluminum oxide additive raw material respectively through thick broken, thin broken to granularity ≤3mm;
(5) the lime stone 70kg crushed, barium slag 25kg, manganese ore 15kg, aluminum oxide 7.5kg are weighed respectively successively, and will It mixes, and stirs;
(6) the compound to stir 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 calcium base barium manganese aluminium compound additive (concrete composition after being cooled to normal temperature: CaCO356.8wt%, BaCO36.4wt%, BaSO46.7wt%, BaSO30.8wt%, MnO210.2wt%, MnO1.3wt%, Al2O39.4wt%, SiO26.3wt%, Fe2O31.6wt%, MgO0.5wt%).
As-fired coal material by 25wt% jet coal, 10wt% meager coal, 30wt% 1/3 coking coal, 20wt% rich coal Coordinate with 15wt% coking coal and form mixed coal;The quality index of its mixed coal is:Vdaf30.0%, Ad11.5%, FCd62.6%, St,d0.67%;Adhesive index=71, fineness (≤3mm)=73.6%;
(8) lignite compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 5.5:7:100, the lignite made is answered Conjunction additive, calcium base barium manganese aluminium compound additive are added in mixed coal, and air is completely cut off in gas retort and is heated to 1000 DEG C, is held Continuous heating 20h, normal temperature is down to after then red heat furnace charge is come out of the stove through quenching process, then screened, and it is 25-80mm's to obtain granularity Civilian clean coke.The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2It is civilian to gained in civilian reverberatory furnace Jiao carries out combustion test, tests its pollutant effulent, compared with direct fire coal, oxysulfide emission reduction 92.2%, and flue dust emission reduction 97%.
Its primary quality measure is as follows:
Embodiment 4
(1) by lime stone, potassium feldspar and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm;
(2) weigh the lime stone 27.5kg crushed, potassium feldspar 18kg, manganese dioxide 8.7kg respectively successively, weigh simultaneously Lignite (quality index:Quality index:Mad12.88%, Vdaf45.04%, Ad23.83%, St,d0.17%) 55kg, it is mixed in Together, and stir;
(3) the compound to stir is dried 1.3 hours under the conditions of 137.5 DEG C, then through dry grinding, makes raw material granularity ≤ 150 mesh (0.1mm);It is subsequently cooled to normal temperature, as lignite compound additive (concrete composition:FCd22.7wt%, Vd18.7wt%, CaCO324.0wt%, K2O2.8wt%, MnO28.0wt%, MgO0.2wt%, Al2O33.4wt%, SiO216.2wt%, Fe2O30.2wt%, CaO3.4wt%, St,d0.3wt%).
(4) dried lime stone, potassium feldspar, silica and magnesium carbonate additive raw material are passed through into thick broken, thin broken extremely respectively Granularity≤3mm;
(5) the lime stone 65kg crushed, potassium feldspar 17.5kg, silica 1 7.5kg, magnesium carbonate are weighed respectively successively 8.7kg, and mixed, stir;
(6) the compound to stir 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 calcium base potassium magnesium silicon compound additive (concrete composition after being cooled to normal temperature: CaCO357.0wt%, MgCO38.0wt%, K2O2.5wt%, Na2O0.1wt%, Al2O33.5wt%, SiO227.9wt%, Fe2O30.4wt%, MgO0.5wt%).
(7) as-fired coal is by 25wt% weakly caking coal, 45wt% jet coal, 20wt% rich coal and 10wt% dross coal Cooperation forms mixed coal;Its quality index (wt%):Vdaf35.0%, Ad11.5%, FCd58.2%, St,d0.84%, bonding refers to Number G=44, fineness (≤3mm)=86.5%;
(8) lignite compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 3.2:8.5:100, the lignite that will be made Compound additive, calcium base potassium magnesium silicon compound additive are added in mixed coal, and air is completely cut off in gas retort and is heated to 950 DEG C, Continuous heating 22h, normal temperature is down to through quenching process after then red heat furnace charge is come out of the stove, then it is screened, it is 25-80mm to obtain granularity Civilian clean coke.The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2To the gained people in civilian reverberatory furnace Combustion test is carried out with Jiao, tests its pollutant effulent, compared with direct fire coal, oxysulfide emission reduction 93.4%, flue dust emission reduction 97.5%.
Its primary quality measure is as follows:
Symbol Unit The technical indicator of the present invention Measured value
Qnet,ar kcal/kg ≥5700 5875
Ad % ≤23 21.8
Vd % ≤5 3.4
ST ≥1280 1301
M25 % ≥75 84.3
RS(1050 DEG C of ignition temperature) % ≥95 98.4
T ≤420 408
CRI % ≥40 47.1
S m2/g 15-35 21.2
Embodiment 5
(1) by lime stone, potassium feldspar and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm;
(2) weigh the lime stone 30kg crushed, potassium feldspar 20kg, manganese dioxide 10kg respectively successively, while weigh lignite (quality index:Quality index:Mad19.6%, Vdaf49.1%, Ad7.7%, St,d0.58%) 50kg, mixed, and Stir;
(3) the compound to stir is dried 1 hour under the conditions of 150 DEG C, then through dry grinding, makes raw material granularity≤150 Mesh (0.1mm);It is subsequently cooled to normal temperature, as lignite compound additive (concrete composition:FCd19.0wt%, Vd15.6wt%, CaCO326.0wt%, K2O3.1wt%, MnO29.1Wt%, MgO0.2wt%, Al2O33.7wt%, SiO218.8wt%, Fe2O30.2wt%, CaO4.3wt%, St,d0.1wt%).
(4) by dried lime stone, barium slag, manganese ore and aluminum oxide additive raw material respectively through thick broken, thin broken to granularity ≤3mm;
(5) the lime stone 60kg crushed, barium slag 30kg, manganese ore 20kg, aluminum oxide 10kg are weighed respectively successively, and will It mixes, and stirs;
(6) the compound to stir 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 calcium base barium manganese aluminium compound additive (concrete composition after being cooled to normal temperature:CaCO347.7wt%, BaCO37.5wt%, BaSO47.9wt%, BaSO30.9wt%, MnO213.3wt%, MnO1.8wt%, Al2O311.7wt%, SiO27.2wt%, Fe2O31.7wt%, MgO0.4wt%).
As-fired coal material by 25wt% jet coal, 10wt% dross coal, 30wt% 1/3 coking coal, 20wt% fertilizer Coal and 15wt% coking coal, which coordinate, forms mixed coal;The quality index of its mixed coal is:Vdaf30.0%, Ad11.5%, FCd62.6%, St,d0.67%;Adhesive index=71, fineness (≤3mm)=73.6%;
(8) lignite compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 1:10:100, the lignite made is compound Additive, calcium base barium manganese aluminium compound additive are added in mixed coal, and air is completely cut off in gas retort and is heated to 900 DEG C, is continued 24h is heated, normal temperature is down to through quenching process after then red heat furnace charge is come out of the stove, then it is screened, obtain the people that granularity is 25-80mm With clean coke.The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2To civilian Jiao of gained in civilian reverberatory furnace Combustion test is carried out, tests its pollutant effulent, compared with direct fire coal, oxysulfide emission reduction 93.7%, flue dust emission reduction 98%.
Its primary quality measure is as follows:
Symbol Unit The technical indicator of the present invention Measured value
Qnet,ar kcal/kg ≥5700 5818
Ad % ≤23 22.8
Vd % ≤5 3.1
ST ≥1280 1287
M25 % ≥75 84.7
RS(1050 DEG C of ignition temperature) % ≥95 98.7
T ≤420 417.5
CRI % ≥40 43.1
S m2/g 15-35 15.7

Claims (10)

1. a kind of civilian clean coke, it is characterised in that as follows including primary quality measure:
It is caloric value >=5700kcal/kg, ash content≤23%, volatile matter≤5%, ash fusion point >=1280 DEG C, crushing strength >=75%, solid Sulphur rate >=95%, ignition temperature≤420 DEG C, reactivity >=40%, than 15~35m of surface2/g。
2. a kind of processing technology of civilian clean coke of the present invention as claimed in claim 1, it is characterised in that including following step Suddenly:
By lignite compound additive:Gu sulphur complexing agent:Mixed coal weight ratio is 2.0~15:4.0~10:100, lignite is compound Additive and solid sulphur complexing agent are added in mixed coal, and air is completely cut off in gas retort and is heated to 900~1100 DEG C, continuous heating 16 ~24h, normal temperature is down to through quenching process after then red heat furnace charge is come out of the stove, then it is screened, that is, obtain civilian clean coke.
A kind of 3. processing technology of civilian clean coke of the present invention as claimed in claim 2, it is characterised in that the matter of mixed coal Figureofmerit is:FCd>=50%, Vdaf>=25%, Ad≤ 11.5%, ST, d< 1.0%.
4. a kind of processing technology of civilian clean coke of the present invention as claimed in claim 2, it is characterised in that the lignite is answered Close additive parts by weight composition for 50~70 parts of lignite, 20~30 parts of lime stone, 10~20 parts of potassium feldspar, manganese dioxide 5~ 10 parts.
5. a kind of processing technology of civilian clean coke of the present invention as claimed in claim 4, it is characterised in that the lignite Quality index is:Mad< 20%, Vdaf> 40%, Ad< 24%, St,d< 0.7%.
A kind of 6. processing technology of civilian clean coke of the invention as described in claim 4 or 5, it is characterised in that its preparation side Method comprises the following steps:
(1) by lime stone, potassium feldspar and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm;
(2) the additive raw material and lignite crushed is weighed respectively, and is mixed, and is stirred;
(3) the compound to stir is dried 1~2 hour under the conditions of 100~150 DEG C, then through dry grinding, makes raw material granularity ≤ 150 mesh(0.1mm);It is subsequently cooled to normal temperature, as lignite compound additive.
7. a kind of processing technology of civilian clean coke of the present invention as claimed in claim 2, it is characterised in that the solid sulphur is answered Mixture includes calcium base barium manganese aluminium compound additive or calcium base potassium magnesium silicon compound additive.
A kind of 8. processing technology of civilian clean coke of the present invention as claimed in claim 7, it is characterised in that the calcium base barium The parts by weight composition of manganese aluminium compound additive is 60~80 parts of lime stone, 20~30 parts of barium slag, 10~20 parts of manganese ore, aluminum oxide 5~10 parts.
A kind of 9. processing technology of civilian clean coke of the present invention as claimed in claim 7, it is characterised in that the calcium base potassium The parts by weight composition of magnesium silicon compound additive is 60~80 parts of lime stone, 10~20 parts of potassium feldspar, 0~20 part of silica 1, carbon Sour 5~10 parts of magnesium.
A kind of 10. processing technology of civilian clean coke of the present invention as claimed in claim 2, it is characterised in that described screening Be be down to normal temperature furnace charge screening be 25-80mm granularities.
CN201710755040.0A 2017-08-29 2017-08-29 A kind of civilian clean coke and its processing technology Pending CN107384461A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012164162A1 (en) * 2011-05-27 2012-12-06 Outotec Oyj Method for producing bio-coke
CN103450915A (en) * 2013-09-07 2013-12-18 鞍钢股份有限公司 Preparation method of metallurgical biomass semi-coke
CN105567272A (en) * 2016-02-24 2016-05-11 太原理工大学 Calcium-based barium manganese aluminum composite additive for improving high-temperature sulfur fixation effect of civilian coke and preparation method and application
CN105733634A (en) * 2016-02-24 2016-07-06 太原理工大学 Calcium-based potassium-magnesium-silicon composite additive for improving high temperature sulfur fixation effect of civil-use coke and production method and application

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012164162A1 (en) * 2011-05-27 2012-12-06 Outotec Oyj Method for producing bio-coke
CN103450915A (en) * 2013-09-07 2013-12-18 鞍钢股份有限公司 Preparation method of metallurgical biomass semi-coke
CN105567272A (en) * 2016-02-24 2016-05-11 太原理工大学 Calcium-based barium manganese aluminum composite additive for improving high-temperature sulfur fixation effect of civilian coke and preparation method and application
CN105733634A (en) * 2016-02-24 2016-07-06 太原理工大学 Calcium-based potassium-magnesium-silicon composite additive for improving high temperature sulfur fixation effect of civil-use coke and production method and application

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