CN107353920A - A kind of civilian clean coke and its preparation technology - Google Patents
A kind of civilian clean coke and its preparation technology Download PDFInfo
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- CN107353920A CN107353920A CN201710754966.8A CN201710754966A CN107353920A CN 107353920 A CN107353920 A CN 107353920A CN 201710754966 A CN201710754966 A CN 201710754966A CN 107353920 A CN107353920 A CN 107353920A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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Abstract
A kind of civilian clean coke is including primary quality measure：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 surface=15~35m2/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
Technical field
The present invention relates to a kind of civilian clean coke and its preparation 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 preparation technology.
Be present significant difference in the combustion adjuvant that the present invention is reported using sawdust 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.Sawdust is former added to domestic coke as pore creating material
In material, the micropore of varying number and size is formed in high-temperature retorting, increases and improves the microcellular structure of domestic coke, it is and compound
Other compositions one in additive work, and reduce the ignition temperature of domestic coke.2) it is different to add the stage.Traditional coal-fired combustion-supporting
Agent is more to be added before prepared by moulded coal, then blended, cohesive, cold moudling；Or directly enter stove burning after being mixed with scattered coal.This hair
Bright auxiliary agent adds in destructive distillation coal blending, it is blended, make firm by ramming, high-temperature retorting turns into civilian clean coke.
Sawdust, also known as sawmilling face, refer to when timber is processed because cutting and fallen trees are in itself from trees
Foam shape wood chip.According to statistics, from log to Wood products are produced, big appointment produces the sawdust for accounting for input raw material 22%~24%
Deng wood wastes, annual about 24,000,000 m of the wood wastes such as caused sawdust in China's forestry process3, convert into standard
1,500,000 tons of coal.
Sawdust is soft in powdered, 0.4~0.8mm of particle diameter, is mainly made up of cellulose, hemicellulose and lignin, one
As cellulose account for 40~50wt%, also 15~30wt% hemicellulose and 20~30wt% lignin, other compositions are
Resin, protein, moisture and mineral matter etc., account for 2~15wt%.
The present invention first compounds sawdust and lime stone, manganese ore and zinc oxide for increasing civilian clean coke ratio surface
Product, 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, sawdust 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 sawdust 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 preparation technology of civilian clean coke of the present invention, comprises the following steps：
By sawdust compound additive:Gu sulphur complexing agent:Mixed coal weight ratio is 2.0~15:4.0~10:100, by sawdust
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%, Std＜ 1.0%.
The parts by weight composition of the sawdust compound additive raw material is 50~70 parts of sawdust, 20~30 parts of lime stone, manganese ore
10~20 parts of stone, 5~10 parts of zinc oxide, its preparation method comprises the following steps：
(1) by lime stone, manganese ore and crude zinc oxide materials respectively through thick broken, thin broken to granularity≤3mm；
(2) the additive raw material and sawdust 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 sawdust 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 sawdust 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 sawdust 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 raw materials such as lime stone, manganese ore and zinc oxide respectively through thick broken, thin broken to granularity≤3mm；
(2) the lime stone 20kg crushed, manganese ore 10kg, zinc oxide 5kg are weighed respectively successively, while it is (main to weigh sawdust
Form：Cellulose 40.5wt%, hemicellulose 29.2wt%, lignin 28wt%, other 2.3wt%) 70kg, it is mixed in
Together, and stir；
(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 sawdust compound additive (concrete composition：Cellulose 27.0wt%, hemicellulose
19.5wt%, lignin 18.7wt%, CaCO318.2wt%, MnO27.6wt%, MnO1.0wt%, Al2O30.5wt%,
SiO21.9wt%, Fe2O30.2wt%, MgO0.2wt%, CaO0.6wt%, ZnO4.8wt%).
(4) by additive raw materials such as dried lime stone, barium slag, manganese ore and aluminum oxide respectively through thick broken, thin broken to grain
Degree≤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) sawdust compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 15:4:100, the sawdust 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 91.3%, 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 | 6016 |
| Ad | % | ≤23 | 19.1 |
| Vd | % | ≤5 | 4.3 |
| ST | ℃ | ≥1280 | 1348 |
| M25 | % | ≥75 | 75.1 |
| RS(1050 DEG C of ignition temperature) | % | ≥95 | 96.3 |
| T | ℃ | ≤420 | 370 |
| CRI | % | ≥40 | 56.4 |
| S | m2/g | 15-35 | 34.7 |
Embodiment 2
(1) by lime stone, manganese ore and crude zinc oxide materials respectively through thick broken, thin broken to granularity≤3mm；
(2) weigh the lime stone 22.5kg crushed, manganese ore 13kg, zinc oxide 6.3kg respectively successively, while weigh saw
End (main composition：Cellulose 43.2wt%, hemicellulose 26.7wt%, lignin 26wt%, other 4.1wt%) 65kg, will
It mixes, and stirs；
(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 sawdust compound additive (concrete composition：Cellulose 26.3wt%, half is fine
Tie up plain 16.3wt%, lignin 15.8wt%, CaCO320.1wt%, MnO29.7wt%, MnO1.3wt%, Al2O30.6wt%,
SiO22.6wt%, Fe2O30.3wt%, MgO0.2wt%, CaO1.0wt%, ZnO5.9wt%).
(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 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) sawdust compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 11.8:5.5:100, the sawdust 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 92.1%, 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 | 5952 |
| Ad | % | ≤23 | 20.1 |
| Vd | % | ≤5 | 4.1 |
| ST | ℃ | ≥1280 | 1335 |
| M25 | % | ≥75 | 78.3 |
| RS(1050 DEG C of ignition temperature) | % | ≥95 | 97.1 |
| T | ℃ | ≤420 | 382.5 |
| CRI | % | ≥40 | 52.5 |
| S | m2/g | 15-35 | 31.1 |
Embodiment 3
(1) by lime stone, manganese ore and crude zinc oxide materials respectively through thick broken, thin broken to granularity≤3mm；
(2) weigh the lime stone 25kg crushed, manganese ore 15kg, zinc oxide 7.5kg respectively successively, while weigh sawdust
(main composition：Cellulose 45.4wt%, hemicellulose 23.3wt%, lignin 24wt%, other 7.3wt%) 60kg, by it
Mix, 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 sawdust compound additive (concrete composition：Cellulose 25.4wt%, hemicellulose
Plain 13.0wt%, lignin 13.4wt%, CaCO322.2wt%, MnO211.1wt%, MnO1.5wt%, Al2O30.6wt%,
SiO23.7wt%, Fe2O30.3wt%, MgO0.2wt%, CaO1.6wt%, ZnO7.0wt%).
(4) by additive raw materials such as dried lime stone, barium slag, manganese ore and aluminum oxide respectively through thick broken, thin broken to grain
Degree≤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) sawdust compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 8.5:7:100, the sawdust 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 92.7%, and flue dust emission reduction
97%.
Its primary quality measure is as follows：
Embodiment 4
(1) by lime stone, manganese ore and crude zinc oxide materials respectively through thick broken, thin broken to granularity≤3mm；
(2) weigh the lime stone 27.5kg crushed, manganese ore 18kg, zinc oxide 8.7kg respectively successively, while weigh saw
End (main composition：Cellulose 47.6wt%, hemicellulose 19.1wt%, lignin 22wt%, other 11.3wt%) 55kg, will
It mixes, and stirs；
(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 sawdust compound additive (concrete composition：Cellulose 24.1wt%, half is fine
Tie up plain 9.6wt%, lignin 11.1wt%, CaCO324.0wt%, MnO213.1wt%, MnO1.7wt%, Al2O30.7wt%,
SiO24.9wt%, Fe2O30.3wt%, MgO0.2wt%, CaO2.3wt%, ZnO8.0wt%).
(4) by additive raw materials such as dried lime stone, potassium feldspar, silica and magnesium carbonate respectively through thick broken, thin broken
To 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) sawdust compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 5.3:8.5:100, the sawdust 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 93.2%, 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 | 5890 |
| Ad | % | ≤23 | 21.6 |
| Vd | % | ≤5 | 3.4 |
| ST | ℃ | ≥1280 | 1308 |
| M25 | % | ≥75 | 82.8 |
| RS(1050 DEG C of ignition temperature) | % | ≥95 | 98.2 |
| T | ℃ | ≤420 | 407.5 |
| CRI | % | ≥40 | 46.5 |
| S | m2/g | 15-35 | 21.3 |
Embodiment 5
(1) by lime stone, manganese ore and crude zinc oxide materials respectively through thick broken, thin broken to granularity≤3mm；
(2) weigh the lime stone 30kg crushed, manganese ore 20kg, zinc oxide 10kg respectively successively, while weigh sawdust
(main composition：Cellulose 49.8wt%, hemicellulose 15.4wt%, lignin 20wt%, other 14.8wt%) 50kg, by it
Mix, 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 sawdust compound additive (concrete composition：Cellulose 22.6wt%, hemicellulose
7.0wt%, lignin 9.1wt%, CaCO326.0wt%, MnO214.5wt%, MnO1.9wt%, Al2O30.8wt%,
SiO25.7wt%, Fe2O30.4wt%, MgO0.2wt%, CaO2.7wt%, ZnO9.1wt%).
(4) by additive raw materials such as dried lime stone, barium slag, manganese ore and aluminum oxide respectively through thick broken, thin broken to grain
Degree≤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) sawdust compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 2.0:10:100, the sawdust 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 900 DEG C, is held
Continuous heating 24h, 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 93.8%, and 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 | 5826 |
| Ad | % | ≤23 | 22.7 |
| Vd | % | ≤5 | 3.1 |
| ST | ℃ | ≥1280 | 1297 |
| M25 | % | ≥75 | 84.7 |
| RS(1050 DEG C of ignition temperature) | % | ≥95 | 98.8 |
| T | ℃ | ≤420 | 418 |
| CRI | % | ≥40 | 43.4 |
| S | m2/g | 15-35 | 15.2 |
Claims (9)
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 surface=15~35m2/g。
2. a kind of preparation technology of civilian clean coke as claimed in claim 1, it is characterised in that comprise the following steps：
By sawdust compound additive:Gu sulphur complexing agent:Mixed coal weight ratio is 2.0~15:4.0~10:100, sawdust 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. preparation technology of civilian clean coke as claimed in claim 2, it is characterised in that the quality index of mixed coal
For：FCd>=50%, Vdaf>=25%, Ad≤ 11.5%, Std＜ 1.0%.
A kind of 4. preparation technology of civilian clean coke as claimed in claim 2, it is characterised in that the compound addition of sawdust
The parts by weight composition of agent raw material is 50~70 parts of sawdust, 20~30 parts of lime stone, 10~20 parts of manganese ore, 5~10 parts of zinc oxide.
A kind of 5. preparation technology of civilian clean coke as claimed in claim 3, it is characterised in that the compound addition of sawdust
The preparation method of agent, comprises the following steps：
(1) by sawdust, lime stone, manganese ore and crude zinc oxide materials respectively through thick broken, thin broken to granularity≤3mm；
(2) the additive raw material and sawdust 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；It is subsequently cooled to normal temperature, as sawdust compound additive.
A kind of 6. preparation technology of civilian clean coke as claimed in claim 2, it is characterised in that the solid sulphur complexing agent bag
Include calcium base barium manganese aluminium compound additive or calcium base potassium magnesium silicon compound additive.
7. a kind of preparation technology of civilian clean coke as claimed in claim 5, it is characterised in that the calcium base barium manganese aluminium is answered
The parts by weight composition for closing additive is 60~80 parts of lime stone, 20~30 parts of barium slag, 10~20 parts of manganese ore, aluminum oxide 5~10
Part.
8. a kind of preparation technology of civilian clean coke as claimed in claim 5, it is characterised in that the calcium base potassium magnesium silicon is answered
The parts by weight composition for closing additive is 60~80 parts of lime stone, 10~20 parts of potassium feldspar, 0~20 part of silica 1, magnesium carbonate 5
~10 parts.
9. a kind of preparation technology of civilian clean coke as claimed in claim 2, it is characterised in that described screening is to be down to
The furnace charge screening of normal temperature is 25-80mm granularities.
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| CN103450915A (en) * | 2013-09-07 | 2013-12-18 | 鞍钢股份有限公司 | Method for manufacturing biomass semicoke for metallurgy |
| 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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2017
- 2017-08-29 CN CN201710754966.8A patent/CN107353920A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012164162A1 (en) * | 2011-05-27 | 2012-12-06 | Outotec Oyj | Method for producing bio-coke |
| CN102352273A (en) * | 2011-06-30 | 2012-02-15 | 中南大学 | Biomass carbon for iron ore sintering, preparation thereof and application thereof |
| CN103450915A (en) * | 2013-09-07 | 2013-12-18 | 鞍钢股份有限公司 | Method for manufacturing biomass semicoke for metallurgy |
| 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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