CN107338066A - A kind of civilian clean coke and its production method - Google Patents
A kind of civilian clean coke and its production method Download PDFInfo
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- CN107338066A CN107338066A CN201710754902.8A CN201710754902A CN107338066A CN 107338066 A CN107338066 A CN 107338066A CN 201710754902 A CN201710754902 A CN 201710754902A CN 107338066 A CN107338066 A CN 107338066A
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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
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/04—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition
- C10B57/06—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing additives
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Abstract
It is as follows that a kind of civilian clean coke includes 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 production method.
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 production method.
Be present significant difference in the combustion adjuvant that the present invention is reported using powder of straw with existing literature, be mainly manifested in：1) reduce
The mechanism of ignition 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,
Therefore, absolute prohibition high-temperature process after addition combustion adjuvant, otherwise will lose combustion-supporting effect；The present invention is combustion-supporting to come from composite oxides
Catalytic action.First under high-temperature retorting reducing condition, coke surface and internal shape are acted on by the catalytic gasification of auxiliary agent
Into carbon defects, turn into the firing point of oxidizing fire；In addition, under high temperature reducing atmospheres, it is micro- to form a small amount of metal for composite assistant
Crystalline substance, meet oxygen easily combustion heat release and form localized hyperthermia's point, so as to the coke that ignites.Powder of straw is as pore creating material, added to civilian
In coke raw materials, varying number and the micropore of size are formed in high-temperature retorting, increases and improves the microcellular structure of domestic coke,
Worked with other compositions one in compound additive, reduce the ignition temperature of domestic coke.2) it is different to add the stage.Tradition combustion
Coal combustion adjuvant is more to be added before prepared by moulded coal, then blended, cohesive, cold moudling；Or directly enter stove combustion after being mixed with scattered coal
Burn.The present invention auxiliary agent added in destructive distillation coal blending, it is blended, make firm by ramming, high-temperature retorting turns into civilian clean coke.
Powder of straw is crushed by stalk and formed, and stalk is the general name of ripe crops cauline leaf (fringe) part, typically refers to jade
The remainder of rice, rice, wheat, barley, oat, sorghum or other crops after seed is harvested.China's stalk resource is rich
Richness, it is currently the first in the world stalk big country, national stalk total output is up to 8.4 hundred million tons within 2005.Wherein corn stalk, rice straw (rice
Grass), wheat straw be still China chief crop straw type.According to statistics, China's straw utilization is used with fertilizer (containing direct returning to farmland)
Amount is most, accounts for the 36.6% of stalk resource, next to that being used as fuel and feed, accounts for 23.7% He of stalk resource respectively
22.6%, other such as raw materials, burn and huddle to leave about and account for 17.1%.
Powder of straw is soft in powdered, 0.3~1.0mm of particle diameter, is mainly made up of cellulose, hemicellulose and lignin,
General cellulose accounts for 32~45%, and also 20~35% hemicellulose and 6~16% lignin, other compositions are mineral
Matter, protein and moisture etc., account for 18~32%.
The present invention first compounds powder of straw and lime stone, bloodstone and manganese dioxide for increasing civilian clean coke ratio
Surface 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, powder of straw compound additive and solid sulphur are answered
Auxiliary agent is closed, is formed through high-temperature retorting, its primary quality measure is as follows：Caloric value (Qnet,ar) >=5700kcal/kg, ash content (Ad)
≤ 23%, 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 powder of straw 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 production method of civilian clean coke of the present invention, comprises the following steps：
By powder of straw compound additive:Gu sulphur complexing agent:Mixed coal weight ratio is 2.0~15:4.0~10:100, by straw
Stalk powder 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,
16~24h of continuous heating, 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
Net coke.
The quality index of mixed coal is：FCd>=50%, Vdaf>=25%, Ad≤ 11.5%, Std＜ 1.0%.
The powder of straw compound additive raw material parts by weight composition for 50~70 parts of powder of straw, 20~30 parts of lime stone,
10~20 parts of bloodstone, 5~10 parts of manganese dioxide, its preparation method comprises the following steps：
(1) by lime stone, bloodstone and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm；
(2) the additive raw material crushed and powder of straw are weighed respectively, and is mixed, and are 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 powder of straw 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 is 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 powder of straw compound additive and solid sulphur complexing agent, raw material sources are extensive and rich
Richness, 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
Emission reduction more than 96%, to solving surrounding city life in the countryside coal, improve rural area and city environmental quality, reduce haze weather tool
There is 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 powder of straw compound additive and solid sulphur composite assistant, using conventional metallurgical coke oven through high temperature
Destructive distillation forms.There is blocking good, moderate strength, low volatilization, the discharge of low stain thing and be not easy slagging, without desulphurization denitration
Fume treatment 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
It hurry up, firing duration length, be 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, bloodstone and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm；
(2) weigh the lime stone 20kg crushed, bloodstone 10kg, manganese dioxide 5kg respectively successively, while weigh sorghum
Powder of straw (main composition：Cellulose 42.2wt%, hemicellulose 31.6wt%, lignin 7.6wt%, other 18.6wt%)
70kg, mixed, and stirred；
(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 powder of straw compound additive (concrete composition：Cellulose 28.1wt%, hemicellulose
Plain 21.1wt%, lignin 5.1wt%, CaCO318.2wt%, MnO24.8wt%, CaO5.9wt%, Al2O30.7wt%,
SiO28.8wt%, Fe2O36.9wt%, MgO0.5wt%).
(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 80kg crushed, barium slag 20kg, manganese ore 10kg, aluminum oxide 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 260 DEG C of bars
Calcined 2 hours under part, be 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) powder of straw compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 15:4:100, the powder of straw that will be made
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,
Continuous heating 16h, 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
Burnt with Jiao, test its pollutant effulent, compared with direct fire coal, oxysulfide emission reduction 90.3%, 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 | 5892 |
| Ad | % | ≤23 | 20.7 |
| Vd | % | ≤5 | 4.2 |
| ST | ℃ | ≥1280 | 1349 |
| M25 | % | ≥75 | 75.7 |
| RS(1050 DEG C of ignition temperature) | % | ≥95 | 95.7 |
| T | ℃ | ≤420 | 368 |
| CRI | % | ≥40 | 58.8 |
| S | m2/g | 15-35 | 34.5 |
Embodiment 2
(1) by lime stone, bloodstone and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm；
(2) weigh the lime stone 22.5kg crushed, bloodstone 13kg, manganese dioxide 6.3kg respectively successively, weigh simultaneously
Rice straw powder (main composition：Cellulose 39.6wt%, hemicellulose 34.8wt%, lignin 6.3wt% are other
19.3wt%) 65kg, mixed, and stirred；
(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 powder of straw compound additive (concrete composition：Cellulose 24.1wt%, half
Cellulose 21.2wt%, lignin 3.8wt%, CaCO320.1wt%, MnO25.9wt%, CaO5.9wt%,
Al2O30.8wt%, SiO28.8wt%, Fe2O38.8wt%, MgO0.6wt%).
(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 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 bars
Calcine 1.8 hours under part, packed after being cooled to normal temperature, as calcium base potassium magnesium silicon compound additive (concrete composition：
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) powder of straw compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 11.8:5.5:100, the straw that will be made
Stalk powder 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, obtaining granularity is
25-80mm civilian clean coke.The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2It is right in civilian reverberatory furnace
The civilian burnt progress combustion test of gained, tests its pollutant effulent, compared with direct fire coal, oxysulfide emission reduction 91.2%, and cigarette
Dirt emission reduction 96.5%.
Its primary quality measure is as follows：
Embodiment 3
(1) by lime stone, bloodstone and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm；
(2) weigh the lime stone 25kg crushed, bloodstone 15kg, manganese dioxide 7.5kg respectively successively, while weigh small
Wheat Straw powder (main composition：Cellulose 43.2wt%, hemicellulose 22.4wt%, lignin 9.5wt% are other
24.9wt%) 60kg, mixed, and stirred；
(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 powder of straw compound additive (concrete composition：Cellulose 24.1wt%, half is fine
Tie up plain 12.5wt%, lignin 5.3wt%, CaCO322.2wt%, MnO27.0wt%, CaO7.0wt%, Al2O31.0wt%,
SiO210.3wt%, Fe2O310.0wt%, MgO0.7wt%).
(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
Mixed, stirred；
(6) the compound to stir makes the mesh (0.1mm) of raw material granularity≤150 through dry grinding；Then in 280 DEG C of bars
Calcine 1.5 hours under part, packed after being cooled to normal temperature, as calcium base barium manganese aluminium compound additive (concrete composition：
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) powder of straw compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 8.5:7:100, the stalk that will be made
Powder 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 1000
DEG C, continuous heating 20h, 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- to obtain granularity
80mm civilian clean coke.The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2To institute in civilian reverberatory furnace
Civilian burnt progress combustion test is obtained, tests its pollutant effulent, compared with direct fire coal, oxysulfide emission reduction 92.3%, flue dust
Emission reduction 97%.
Its primary quality measure is as follows：
| Symbol | Unit | The technical indicator of the present invention | Measured value |
| Qnet,ar | kcal/kg | ≥5700 | 5808 |
| Ad | % | ≤23 | 22.4 |
| Vd | % | ≤5 | 3.6 |
| ST | ℃ | ≥1280 | 1316 |
| M25 | % | ≥75 | 81.2 |
| RS(1050 DEG C of ignition temperature) | % | ≥95 | 97.3 |
| T | ℃ | ≤420 | 394.3 |
| CRI | % | ≥40 | 49.5 |
| S | m2/g | 15-35 | 26.1 |
Embodiment 4
(1) by lime stone, bloodstone and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm；
(2) weigh the lime stone 27.5kg crushed, bloodstone 18kg, manganese dioxide 8.7kg respectively successively, weigh simultaneously
Barley straw powder (main composition：Cellulose 40.7wt%, hemicellulose 23.8wt%, lignin 8.4wt% are other
27.1wt%) 55kg, mixed, and stirred；
(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 powder of straw compound additive (concrete composition：Cellulose 20.5wt%, half
Cellulose 12.0wt%, lignin 4.2wt%, CaCO324.0wt%, MnO28.0wt%, CaO7.1wt%,
Al2O31.1wt%, SiO210.5wt%, Fe2O311.8wt%, MgO0.8wt%).
(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%, bond
Index G=44, fineness (≤3mm)=86.5%；
(8) powder of straw compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 5.3:8.5:100, the straw that will be made
Stalk powder 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- to obtain granularity
80mm civilian clean coke.The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2To institute in civilian reverberatory furnace
Civilian burnt progress combustion test is obtained, 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 | 5862 |
| Ad | % | ≤23 | 22.0 |
| Vd | % | ≤5 | 3.3 |
| ST | ℃ | ≥1280 | 1304 |
| M25 | % | ≥75 | 83.8 |
| RS(1050 DEG C of ignition temperature) | % | ≥95 | 98.4 |
| T | ℃ | ≤420 | 408.7 |
| CRI | % | ≥40 | 46.7 |
| S | m2/g | 15-35 | 21.3 |
Embodiment 5
(1) by lime stone, bloodstone and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm；
(2) weigh the lime stone 30kg crushed, bloodstone 20kg, manganese dioxide 10kg respectively successively, while weigh corn
Powder of straw (main composition：Cellulose 32.9wt%, hemicellulose 19.9wt%, lignin 15.7wt%, other 31.5wt%)
50kg, mixed, and stirred；
(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 powder of straw compound additive (concrete composition：Cellulose 15.0wt%, hemicellulose
Plain 9.0wt%, lignin 7.1wt%, CaCO326.0wt%, MnO29.1wt%, CaO7.6wt%, Al2O31.2wt%,
SiO211.1wt%, Fe2O313.1wt%, MgO0.8wt%).
(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) 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 bars
Calcine 1 hour under part, packed after being cooled to normal temperature, as calcium base barium manganese aluminium compound additive (concrete composition：
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) powder of straw compound additive is pressed:Gu sulphur complexing agent:Mixed coal weight ratio is 2.0:10:100, the stalk that will be made
Powder 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, continuous heating 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, it is 25- to obtain granularity
80mm civilian clean coke.The NS18-2 types 150m that Chuan Zi stoves Co., Ltd produces in Beijing2To institute in civilian reverberatory furnace
Civilian burnt progress combustion test is obtained, tests its pollutant effulent, compared with direct fire coal, oxysulfide emission reduction 93.6%, flue dust
Emission reduction 98%.
Its primary quality measure is as follows：
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 production method of civilian clean coke as claimed in claim 1, it is characterised in that comprise the following steps：
By powder of straw compound additive:Gu sulphur complexing agent:Mixed coal weight ratio is 2.0~15:4.0~10:100, by powder of straw
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.
A kind of 3. production method 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%.
4. a kind of production method of civilian clean coke as claimed in claim 2, it is characterised in that the powder of straw is compound to be added
The parts by weight of agent raw material are added to form as 50~70 parts of powder of straw, 20~30 parts of lime stone, 10~20 parts of bloodstone, manganese dioxide 5
~10 parts.
5. a kind of production method of civilian clean coke as claimed in claim 2, it is characterised in that the powder of straw is compound to be added
The preparation method of agent is added to comprise the following steps：
(1) by lime stone, bloodstone and manganese dioxide feedstock respectively through thick broken, thin broken to granularity≤3mm；
(2) the additive raw material crushed and powder of straw are weighed respectively, and is mixed, and are 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 powder of straw compound additive.
6. a kind of production method of civilian clean coke as claimed in claim 2, it is characterised in that the solid sulphur complexing agent is
Calcium base barium manganese aluminium compound additive or calcium base potassium magnesium silicon compound additive.
7. a kind of production method of civilian clean coke as claimed in claim 6, 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 production method of civilian clean coke as claimed in claim 6, 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 production method of civilian clean coke as claimed in claim 2, it is characterised in that described screening is
The furnace charge screening for being down to normal temperature is 25-80mm granularities.
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| CN109735359A (en) * | 2019-01-24 | 2019-05-10 | 太原理工大学 | Inhibit the preparation of potassium base composite assistant and application of the loss of domestic coke combustion fumes |
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Application publication date: 20171110 |