CN106929053A - A kind of coking process of the moulded coal raw material containing low-order coal and particulate matter - Google Patents
A kind of coking process of the moulded coal raw material containing low-order coal and particulate matter Download PDFInfo
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- CN106929053A CN106929053A CN201511021194.4A CN201511021194A CN106929053A CN 106929053 A CN106929053 A CN 106929053A CN 201511021194 A CN201511021194 A CN 201511021194A CN 106929053 A CN106929053 A CN 106929053A
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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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- 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
- C10B53/08—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form in the form of briquettes, lumps and the like
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- 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
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Abstract
The invention provides a kind of coking process of the moulded coal raw material containing low-order coal and particulate matter, including, low-order coal moulded coal layer raw material will be mixed to form after the granulating mixture of biomass and rubbish with low-order coal, organic binder bond；Scala media coal, high-order coal or middle high-order coal are press-formed, form non-low-order coal moulded coal layer, and add low-order coal moulded coal layer raw material on the non-low-order coal moulded coal layer, continuation is press-formed to the rank coal type coal seam raw material, the low-order coal moulded coal layer on non-low-order coal moulded coal layer is formed, so as to form final moulded coal raw material；Coking is carried out to moulded coal raw material, raw gas, tar, crude benzol, coke is obtained.Coking process of the invention not only solves prior art because of the problem for making low-order coal, biomass and spam application limited in the absence of large-scale industrialization equipment, also effectively overcome that existing tamping coke furnace availability is low, coking industry production capacity surplus problem so that the existing considerable economic benefit of the present invention has certain social benefit again.
Description
Technical field
The present invention relates to a kind of moulded coal raw material containing low-order coal and particulate matter suitable for tamping coke furnace
Coking process, belongs to low-order coal upgrading transformation technology field.
Background technology
Since 18th century, coal has turned into one of widely used energy of human world, with regard to China
Energy consumption structure for, current coal occupies 70% or so, is the national main energy sources depended on for existence.
According to the difference of structure and composition, coal is divided into lignite, bituminous coal and anthracite three major types, its metabituminous coal
It is divided into lower-grade metamorphic bituminous and mesometamorphism bituminous coal again, lower-grade metamorphic bituminous also referred to as ub-bituminous coal, itself and lignite one
Rise and be referred to as " low-order coal ".According to statistics, the reserves of China's low-order coal account for national explored coal reserves
More than 55%, up to 561,200,000,000 tons, but because low-order coal is used as the product at incoalation initial stage,
With phosphorus content it is low, moisture is high, easy efflorescence, easy spontaneous combustion, fugitive constituent high, immersion intensity difference, anti-dropping
The features such as intensity difference, thus the serious direct exploitation for limiting low-order coal, this undoubtedly causes huge
The big wasting of resources.In addition, increasingly increase and high-quality coal stock number with domestic energy demand
Fall sharply, the upgrading conversion of low-order coal already turns into current China's energy research with comprehensive utilization with exploitation
Major fields.
So far, the Upgrading Processes both at home and abroad for low-order coal are broadly divided into pyrolysis upgrading skill
Art, non-evaporating dehydrolysis upgrading technology and shaping upgrading technology three major types, wherein, for shaping upgrading skill
For art, in forming process, the physical action such as high pressure or shearing is to its gel structure and hole for low-order coal
Slot sytem generates irreversible destruction, it is thus possible to inherently lifts the coal rank of low-order coal, makes it
Degree of coalification is also improved therewith, so as to the dust for solving drying low-order coal is big, easily water suction, easily again
In deficiencies such as spontaneous combustions.But current low-order coal upgrading technology is in experimental study and engineering initially should
With the stage, the equipment in the absence of its heavy industrialization application is made thus limit the exploitation of low-order coal
Utilize.
Biomass energy is that green plants converts solar energy into chemical energy and is stored in the energy inside biomass
Amount, i.e., the form of energy with biomass as carrier, it is directly or indirectly from the light of green plants
Cooperation is used, and can be converted into conventional solid-state, liquid and fuel gas, inexhaustible, nexhaustible,
It is a kind of regenerative resource, while being also a kind of unique reproducible carbon source.The biology researched and developed in recent years
Matter curing molding technology changes traditional mode of biomass energy utilization, and loose biomass are converted into
Highdensity shaped fuel, directly burns or as gasification, liquefaction raw material, as biomass energy exploitation
A kind of effective way for utilizing, is also the effective ways for substituting conventional energy resource, Unfortunately, mesh
It is preceding not possess the equipment for making biomass fuel heavy industrialization application still.
China has the garbage compost work of current implementation for the recycling mode of house refuse at this stage
Skill and the garbage derivatived fuel technology studied, wherein for garbage derivatived fuel technology, though
The right technology has obtained commercial application in day, moral, Mei Deng developed countries, but because China is current
Do not possess the separate waste collection system of specification still, so foreign countries are for the sorting rubbish of component stabilization
Fuel manufacturing technology cannot be applied to the high humidity composting of China, therefore, the rubbish of China should be directed to
Rubbish reclaims present situation, and design research and development are adapted to the process for treating garbage as resource of China's national situation.
Tamping coke furnace be coal coking process in the maximization equipment that uses, its floor space is wide, investment
Capital cost is big.Coking of coal is to produce coke through high-temperature retorting by raw material of coal, while acquisition coal gas,
Coal tar simultaneously reclaims a kind of coal conversion process of other chemical products, and its coke product is mainly metallurgical coke
Or chemical industry is burnt.Because the quality requirements industrially to this kind of coke are very high so that production metallurgy is burnt or changes
The coal raw material that work Jiao is used is mainly coking coal, 1/3 coking coal, bottle coal, rich coal, lean coal, meager lean coal
Etc. coal, belong to mesometamorphism bituminous coal, but the shortage of coal resources in recent years, particularly for coking
The reduction of the middle high-quality coal raw material of industry so that the cost of material of coking industry is growing day by day, in addition
Steel, metallurgy etc. largely needed the decline of metallurgical coke or the burnt industry of chemical industry in recent years, caused coke to produce
The demand of product is reduced, price declines, so as to force coke-oven plant drastically to reduce coke output, thus band
Come consequence be tamping coke furnace out of service, once and coke oven disable will scrap, then in order to protect
Furnish a huge amount of money for the tamping coke furnace equipment invested to build, would have to be maintained in minimum level the operation of coke oven, this
Sample not only reduces the availability of tamping coke furnace, can also cause the production capacity surplus of coking industry.Therefore,
The coking industry for being on the verge of negative growth how is saved, the availability of tamping coke furnace is improved, coking industry is solved
The problem of production capacity surplus has turned into the bottleneck of current containment coking industry development.
In sum, how tamping coke furnace is applied to low-order coal, biology under current situation
The exploitation field of matter and rubbish is puzzlement this area skill so that above mentioned problem is all readily solved
One technical barrier of art personnel.
The content of the invention
Present invention solves the technical problem that be overcome prior art cannot realize low-order coal, biomass and
The defect of the large-scale application of rubbish and the low problem of existing tamping coke furnace availability, and then provide one
Plant and be suitable to the coking process of the moulded coal raw material containing low-order coal and particulate matter of tamping coke furnace.
Therefore, the present invention realizes that the technical scheme of above-mentioned purpose is：
A kind of coking process of the moulded coal raw material containing low-order coal and particulate matter, including：
(1) biomass material dried, crushed, obtain biomass powder；By drying garbage, crush,
Obtain rubbish powder；It is in mass ratio by the biomass powder and the rubbish powder (5-7)：(3-5)
Ratio mix and be pressed into particulate matter, it is standby；
(2) low-order coal and organic binder bond are mixed to form mixture, the mixture is after crushed again
Mix to form low-order coal moulded coal layer raw material with the particulate matter of step (1), it is standby；
Wherein, the organic binder bond is weightless less than 50% in 850 DEG C of destructive distillation completely cut off under air conditionses,
The addition of the particulate matter is the 20-50% of the low-order coal moulded coal layer material quality in mass；
(3) one or more in scala media coal, high-order coal or the middle high-order coal crushed are pressurizeed into
Type, forms non-low-order coal moulded coal layer, and add the low of step (2) on the non-low-order coal moulded coal layer
Rank coal type coal seam raw material, continues to be press-formed low-order coal moulded coal layer raw material, and formation is located at
Low-order coal moulded coal layer on the non-low-order coal moulded coal layer, so as to form final moulded coal raw material；
(4) coking treatment will be carried out in the moulded coal raw material push-in coke oven of step (3), controls coking temperature
It is 950-1050 DEG C to spend, scorch time be not less than 16 hours, collect overflow raw gas, tar,
The mixture of crude benzol, while obtaining byproduct coke.
The density of the particulate matter is 1.2-1.4g/cm3；In the particulate matter, the biomass powder
The moisture content of body is 13-17wt%, and the moisture content of the rubbish powder is 13-17wt%.
In mass, the addition of the organic binder bond is the 5-40% of the low-order coal quality.
The organic binder bond is asphalitine of the softening point more than 100 DEG C.
The asphalitine is coal asphalt or petroleum asphalt of the softening point not less than 120 DEG C.
The asphalitine is hard pitch, and in mass, the fixed carbon content of the hard pitch is 25%
More than, C/Hratio is 8-11.
The G values of the low-order coal are more than 40% less than 50, volatile matter content；
In mass, the quality of the low-order coal moulded coal layer is the 10-70% of the moulded coal material quality.
The quality of the low-order coal moulded coal layer is the 40-60% of the moulded coal material quality.
The addition of the particulate matter is the 20-35% of the low-order coal moulded coal layer quality.
The coking treatment is carried out in tamping coke furnace, and the moulded coal raw material is smash in tamping machine
Gu shaping.
The particulate matter that coking process of the present invention is used can be arbitrary shape, and its volume is not with
More than 25cm3It is advisable.
Above-mentioned technical proposal of the invention has the following advantages that：
1st, the coking process of the moulded coal raw material containing low-order coal and particulate matter that the present invention is provided, by adding
Enter the weightless organic binder bond less than 50% of destructive distillation under completely cutting off air conditionses at 850 DEG C, using its caking property
The particulate matter molding bonded formed by low-order coal and by biomass and rubbish, on the one hand can make low-order coal
Can be pushed with particulate matter carry out in tamping coke furnace coking treatment, on the other hand also cause low-order coal and
Solid product after the completion of grain thing coking is not pulverized easily, it is easy to the coke pushing of tamping coke furnace, it is often more important that
After above-mentioned organic binder bond mixes with low-order coal and particulate matter, the active ingredient in organic binder bond can promote
The high molecular polymer entered in low-order coal and biomass degraded at high temperature, it is low so as to be favorably improved
The oil and gas production of rank coal and biomass material, makes oil gas total amount increase production more than 10%.
Also, coking process of the invention is arranged on non-low-order coal moulded coal layer by by low-order coal moulded coal layer
On so that oozed to non-low order coal type under the liquid that low-order coal moulded coal layer is produced during high-temperature-coked
In coal seam, the quality of the coke that low-order coal moulded coal layer is produced is favorably improved.Thus, Jiao of the invention
Chemical industry skill not only solves prior art because making low-order coal, life in the absence of large-scale industrialization equipment
The limited problem of material and spam application, also effectively overcomes that existing tamping coke furnace availability is low, Jiao
Change the problem of industry production capacity surplus.
Coking process of the invention make full use of high-temperature retorting can make biomass such as agricultural wastes straw,
Organic matter in combustiblerefuse and Compostable changes olefiant gas and residue can be used as chemical industry Jiao's
Characteristic, by the embedded appropriate particle formed by biomass and rubbish in low-order coal moulded coal moulded coal layer
Thing, not only contribute to reduce moulded coal raw material production cost under conditions of still ensure that oil gas higher and
Coke yield, can also effectively realize the recycling to biomass and rubbish, reduce because of agriculture waste
The blindness of thing and rubbish burns caused environmental pollution so that coking process of the invention is existing considerable
Economic benefit have certain social benefit again.
2nd, the coking process of the moulded coal raw material containing low-order coal and particulate matter that the present invention is provided, preferably has
Machine binding agent be softening point not less than 120 DEG C of coal asphalt or petroleum asphalt, can so improve low-order coal,
The quality of the solid product-coke after biomass and garbage raw material coking so that the volatile matter in coke
No more than 3-4%, so as to can be used to generating electricity, gas making and other chemical industry purposes.
Specific embodiment
Technical scheme will be clearly and completely described below, it is clear that described
Embodiment is a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, it is all that those of ordinary skill in the art are obtained under the premise of creative work is not made
Other embodiment, belongs to the scope of protection of the invention.Additionally, invention described below is different
As long as involved technical characteristic does not constitute conflict and can just be combined with each other each other in implementation method.
Coal composition in coking process of the present invention is applied to all of low-order coal, scala media coal, height
Rank coal or middle high-order coal raw material.For purposes of illustration only, the low-order coal in following embodiments is with ub-bituminous coal or brown
As a example by coal, the coal raw material of non-low-order coal is by taking 1/3 coking coal or coking coal as an example.For ease of comparing and illustrating,
In following examples, wt% represents weight/mass percentage composition, quality=(quality × 75% of low-order coal of dry coal
The quality of the quality × 90%+ organic binder bonds of the non-low-order coals of quality × 85%+ of+particulate matter), " kg/t
Dry coal " refers to kilogram number, " Nm of the product that dry coal per ton is obtained3/ t dry coals " refer to what dry coal per ton was obtained
The volume of raw gas is converted into 25 DEG C, the 1 cubic meter numbers of normal atmosphere pressure.
Embodiment 1
(1) by stalk drying to moisture content is for 15wt% and crushes, fibrous straw powder is obtained；By combustiblerefuse
Drying obtains rubbish powder to moisture content is for 13wt% and crushes；Fibrous straw powder and rubbish powder are pressed into quality
Than being 7:3 ratio is mixed to form mixture, and pressurized treatments are carried out to the mixture under 20MPa
And pressurize 1min, particulate matter is obtained, its density is 1.2g/cm3, volume is 25cm3, it is standby；
(2) particulate matter after crushing ub-bituminous coal and organic binder bond jointly again with step (1) is mixed,
Low-order coal moulded coal layer raw material is formed, it is standby；
Wherein, the G values of ub-bituminous coal are 45, and volatile content is more than 40%；Organic binder bond be
Destructive distillation weightlessness under 850 DEG C of isolation air conditionses is 45% coal tar pitch, and its softening point is 105 DEG C；
In the raw material of low order coal type coal seam, in mass, the addition of particulate matter is low-order coal moulded coal layer raw material
The 20wt% of quality, the addition of organic binder bond is the 40wt% of ub-bituminous coal quality；
(3) 1/3 coking coal crushed is carried out using tamping machine making shaping firm by ramming, forms non-low-order coal
Moulded coal layer, and the low-order coal moulded coal layer raw material of step (2) is added on the non-low-order coal moulded coal layer, after
It is continuous that low-order coal moulded coal layer raw material is carried out making shaping firm by ramming using tamping machine, formed and be located at non-low order coal type
Low-order coal moulded coal layer on coal seam, so as to form final moulded coal raw material；
In mass, the addition of low-order coal moulded coal layer raw material is the 10wt% of moulded coal material quality；
(4) coking treatment will be carried out in the moulded coal raw material push-in coke oven of step (3), controls coking temperature
It is 1050 DEG C to spend, and scorch time is 18 hours, collects raw gas, tar, the mixing of crude benzol overflowed
Thing, while obtaining byproduct coke；Using the isolated raw gas of common process, tar, one is gone forward side by side
Step isolates crude benzol from coal gas, and the amount of the raw gas is 450Nm3/ t dry coals, the amount of the tar
It is 46kg/t dry coals, the amount of the crude benzol is 12kg/t dry coals, and the amount of the coke is 640kg/t
Dry coal, the solids carbon content in the coke is not more than 2%, Jiao not less than 80%, volatile matter content
Particle diameter is the 75% of coke gross mass in the particle gross mass of more than 40mm after charcoal screening, and particle diameter exists
The particle gross mass of more than 25mm is the 95% of coke gross mass.
Embodiment 2
(1) by stalk drying to moisture content is for 17wt% and crushes, fibrous straw powder is obtained；By combustiblerefuse
Drying obtains rubbish powder to moisture content is for 15wt% and crushes；Fibrous straw powder and rubbish powder are pressed into quality
Than being 6:4 ratio is mixed to form mixture, and pressurized treatments are carried out to the mixture under 20MPa
And pressurize 1min, particulate matter is obtained, its density is 1.3g/cm3, volume is 25cm3, it is standby；
(2) particulate matter after crushing ub-bituminous coal and organic binder bond jointly with step (1) is mixed,
Low-order coal moulded coal layer raw material is formed, it is standby；
Wherein, the G values of ub-bituminous coal are 40, and volatile content is 50%；Organic binder bond is at 850 DEG C
Destructive distillation weightlessness under isolation air conditionses is 40% asphalt, and its softening point is 120 DEG C；At this
In low-order coal moulded coal layer raw material, in mass, the addition of particulate matter is low-order coal moulded coal layer raw material matter
The 35wt% of amount, the addition of organic binder bond is the 5wt% of ub-bituminous coal quality；
(3) coking coal crushed is carried out using tamping machine making shaping firm by ramming, forms non-low-order coal moulded coal layer,
And the low-order coal moulded coal layer raw material of step (2) is added on non-low-order coal moulded coal layer, continue using smashing
It is fixed to carry out making shaping firm by ramming for low-order coal moulded coal layer raw material, formed and be located on non-low-order coal moulded coal layer
Low-order coal moulded coal layer, so as to form final moulded coal raw material；
In mass, the addition of low-order coal moulded coal layer raw material is the 60wt% of moulded coal material quality；
(4) coking treatment will be carried out in the moulded coal raw material push-in coke oven of step (3), controls coking temperature
It is 1000 DEG C to spend, and scorch time is 16 hours, collect overflow raw gas, tar, crude benzol it is mixed
Compound, while obtaining byproduct coke；Using the isolated raw gas of common process, tar, go forward side by side
One step isolates crude benzol from coal gas, and the amount of the raw gas is 455Nm3/ t dry coals, the tar
It is 40kg/t dry coals to measure, and the amount of the crude benzol is 11kg/t dry coals, and the amount of the coke is 630kg/t
Dry coal, the solids carbon content in the coke is not more than 2%, Jiao not less than 80%, volatile matter content
Particle diameter is the 30% of coke gross mass in the particle gross mass of more than 40mm after charcoal screening, and particle diameter exists
The particle gross mass of more than 25mm is the 55% of coke gross mass.
Embodiment 3
(1) by stalk drying to moisture content is for 15wt% and crushes, fibrous straw powder is obtained；By combustiblerefuse
Drying obtains rubbish powder to moisture content is for 17wt% and crushes；Fibrous straw powder and rubbish powder are pressed into quality
Than being 5:5 ratio is mixed to form mixture, and pressurized treatments are carried out to the mixture under 20MPa
And pressurize 1min, particulate matter is obtained, its density is 1.4g/cm3, volume is 25cm3, it is standby；
(2) particulate matter after crushing lignite and organic binder bond jointly with step (1) is mixed, shape
It is standby into low-order coal moulded coal layer raw material；
Wherein, the G values of lignite are 0, and volatile content is 48%；Organic binder bond is at 850 DEG C
Destructive distillation weightlessness under isolation air conditionses is 42% high temperature asphalt, and its softening point is 125 DEG C,
The fixed carbon content in the high temperature asphalt is 30% in mass, and C/Hratio is 8；In low order
In the raw material of coal type coal seam, in mass, the addition of particulate matter is low-order coal moulded coal layer material quality
30wt%, the addition of organic binder bond is the 22.5wt% of lignite quality；
(3) 1/3 coking coal crushed is carried out using tamping machine making shaping firm by ramming, forms non-low order coal type
Coal seam, and the low-order coal moulded coal layer raw material of step (2) is added on the non-low-order coal moulded coal layer, continue
Low-order coal moulded coal layer raw material is carried out making shaping firm by ramming using tamping machine, is formed and is located at non-low-order coal moulded coal
Low-order coal moulded coal layer on layer, so as to form final moulded coal raw material；
In mass, the addition of low-order coal moulded coal layer raw material is the 40wt% of moulded coal material quality；
(4) coking treatment will be carried out in the moulded coal raw material push-in coke oven of step (3), controls coking temperature
It is 1025 DEG C to spend, and scorch time is 20 hours, collects raw gas, tar, the mixing of crude benzol overflowed
Thing, while obtaining byproduct coke；Using the isolated raw gas of common process, tar, one is gone forward side by side
Step isolates crude benzol from coal gas, and the amount of the raw gas is 440Nm3/ t dry coals, the amount of the tar
It is 38kg/t dry coals, the amount of the crude benzol is 11kg/t dry coals, and the amount of the coke is 660kg/t
Dry coal, the solids carbon content in the coke is not more than 2%, Jiao not less than 80%, volatile matter content
Particle diameter is the 65% of coke gross mass in the particle gross mass of more than 40mm after charcoal screening, and particle diameter exists
The particle gross mass of more than 25mm is the 90% of coke gross mass.
Embodiment 4
(1) by stalk drying to moisture content is for 13wt% and crushes, fibrous straw powder is obtained；By combustiblerefuse
Drying obtains rubbish powder to moisture content is for 15wt% and crushes；Fibrous straw powder and rubbish powder are pressed into quality
Than being 7:3 ratio is mixed to form mixture, and pressurized treatments are carried out to the mixture under 20MPa
And pressurize 1min, particulate matter is obtained, its density is 1.3g/cm3, volume is 25cm3, it is standby；
(2) particulate matter after crushing lignite and organic binder bond jointly with step (1) is mixed, shape
It is standby into low-order coal moulded coal layer raw material；
Wherein, the G values of lignite are 0, and volatile content is 55%；Organic binder bond is at 850 DEG C
Destructive distillation weightlessness under isolation air conditionses is 47% coal tar pitch, and its softening point is 130 DEG C, with
Fixed carbon content in the quality meter coal tar pitch is 35%, and C/Hratio is 11；In low order coal type
In the raw material of coal seam, in mass, the addition of particulate matter is the 25wt% of low-order coal moulded coal layer material quality,
The addition of organic binder bond is the 15wt% of lignite quality；
(3) coking coal crushed is carried out using tamping machine making shaping firm by ramming, forms non-low-order coal moulded coal layer,
And the low-order coal moulded coal layer raw material of step (2) is added on non-low-order coal moulded coal layer, continue using smashing
It is fixed to carry out making shaping firm by ramming for low-order coal moulded coal layer raw material, formed and be located on non-low-order coal moulded coal layer
Low-order coal moulded coal layer, so as to form final moulded coal raw material；
In mass, the addition of low-order coal moulded coal layer raw material is the 70wt% of moulded coal material quality；
(4) coking treatment will be carried out in the moulded coal raw material push-in coke oven of step (3), controls coking temperature
It is 950 DEG C to spend, and scorch time is 18 hours, collects raw gas, tar, the mixing of crude benzol overflowed
Thing, while obtaining byproduct coke；Using the isolated raw gas of common process, tar, one is gone forward side by side
Step isolates crude benzol from coal gas, and the amount of the raw gas is 430Nm3/ t dry coals, the amount of the tar
It is 47kg/t dry coals, the amount of the crude benzol is 12kg/t dry coals, and the amount of the coke is 630kg/t
Dry coal, the solids carbon content in the coke is not more than 3%, Jiao not less than 80%, volatile matter content
Particle diameter is the 40% of coke gross mass in the particle gross mass of more than 40mm after charcoal screening, and particle diameter exists
The particle gross mass of more than 25mm is the 60% of coke gross mass.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no need and unable to give all of implementation method
With exhaustion.And the obvious change thus extended out or change guarantor still in the invention
Among shield scope.
Claims (10)
1. a kind of coking process of the moulded coal raw material containing low-order coal and particulate matter, including：
(1) biomass material dried, crushed, obtain biomass powder；By drying garbage, crush,
Obtain rubbish powder；It is in mass ratio by the biomass powder and the rubbish powder (5-7)：(3-5)
Ratio mix and be pressed into particulate matter, it is standby；
(2) low-order coal and organic binder bond are mixed to form mixture, the mixture is after crushed again
Mix to form low-order coal moulded coal layer raw material with the particulate matter of step (1), it is standby；
Wherein, the organic binder bond is weightless less than 50% in 850 DEG C of destructive distillation completely cut off under air conditionses,
The addition of the particulate matter is the 20-50% of the low-order coal moulded coal layer material quality in mass；
(3) one or more in scala media coal, high-order coal or the middle high-order coal crushed are pressurizeed into
Type, forms non-low-order coal moulded coal layer, and add the low of step (2) on the non-low-order coal moulded coal layer
Rank coal type coal seam raw material, continues to be press-formed low-order coal moulded coal layer raw material, and formation is located at
Low-order coal moulded coal layer on the non-low-order coal moulded coal layer, so as to form final moulded coal raw material；
(4) coking treatment will be carried out in the moulded coal raw material push-in coke oven of step (3), controls coking temperature
It is 950-1050 DEG C to spend, scorch time be not less than 16 hours, collect overflow raw gas, tar,
The mixture of crude benzol, while obtaining byproduct coke.
2. coking process according to claim 1, it is characterised in that the density of the particulate matter
It is 1.2-1.4g/cm3；In the particulate matter, the moisture content of the biomass powder is 13-17wt%,
The moisture content of the rubbish powder is 13-17wt%.
3. coking process according to claim 1 and 2, it is characterised in that in mass, institute
The addition for stating organic binder bond is the 5-40% of the low-order coal quality.
4. the coking process according to claim any one of 1-3, it is characterised in that described organic
Binding agent is asphalitine of the softening point more than 100 DEG C.
5. coking process according to claim 4, the asphalitine is that softening point is not less than 120 DEG C
Coal asphalt or petroleum asphalt.
6. the coking process according to claim 4 or 5, it is characterised in that the asphalitine is
Hard pitch, in mass, more than 25%, C/Hratio is the fixed carbon content of the hard pitch
8-11。
7. the coking process according to claim any one of 1-6, it is characterised in that the low order
The G values of coal are more than 40% less than 50, volatile matter content；
In mass, the quality of the low-order coal moulded coal layer is the 10-70% of the moulded coal material quality.
8. coking process according to claim 7, it is characterised in that the low-order coal moulded coal layer
Quality be the moulded coal material quality 40-60%.
9. the coking process according to claim any one of 1-8, it is characterised in that the particle
The addition of thing is the 20-35% of the low-order coal moulded coal layer quality.
10. the coking process according to claim any one of 1-9, it is characterised in that the coking
Treatment is carried out in tamping coke furnace, and the moulded coal raw material carries out making shaping firm by ramming in tamping machine.
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