CN106929042A - A kind of moulded coal raw material for being coated with low-order coal and biological particles - Google Patents
A kind of moulded coal raw material for being coated with low-order coal and biological particles Download PDFInfo
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- CN106929042A CN106929042A CN201511020511.0A CN201511020511A CN106929042A CN 106929042 A CN106929042 A CN 106929042A CN 201511020511 A CN201511020511 A CN 201511020511A CN 106929042 A CN106929042 A CN 106929042A
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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
- C10B55/00—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material
- C10B55/02—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material with solid materials
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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
- C10B57/045—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing mineral oils, bitumen, tar or the like or mixtures thereof
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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
-
- 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
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
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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
Abstract
The invention provides a kind of moulded coal raw material for being coated with low-order coal and biological particles, including low-order coal moulded coal body and the non-low-order coal moulded coal layer for being coated on the low-order coal moulded coal body exterior, the low-order coal moulded coal body includes biological particles, low-order coal and organic binder bond, and the organic binder bond is weightless less than 50% in 850 DEG C of destructive distillation completely cut off under air conditionses；The quality of the low-order coal moulded coal body is the 40-70% of the moulded coal material quality, and the addition of the biological particles is the 20-50% of this weight of the low-order coal moulded coal.Moulded coal raw material of the invention not only solves prior art because making low-order coal and the limited problem of biomass application 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 moulded coal raw material of the invention has certain social benefit again.
Description
Technical field
The present invention relates to a kind of moulded coal for being coated with low-order coal and biological particles suitable for tamping coke furnace
Raw material, 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.
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 and biology under current situation
The exploitation field of matter is puzzlement those skilled in the art so that above mentioned problem is all readily solved
A technical barrier.
The content of the invention
Present invention solves the technical problem that being to overcome the prior art cannot to realize low-order coal and biomass energy
The defect of large-scale application and the low problem of existing tamping coke furnace availability, so provide one kind be suitable to
The moulded coal raw material containing low-order coal and biological particles of tamping coke furnace.
Therefore, the present invention realizes that the technical scheme of above-mentioned purpose is：
A kind of moulded coal raw material for being coated with low-order coal and biological particles, including,
Low-order coal moulded coal body and the non-low-order coal moulded coal for being coated on the low-order coal moulded coal body exterior
Layer, the non-low-order coal moulded coal layer is by one or more systems in scala media coal, high-order coal or middle high-order coal
Into；It is characterized in that：
The low-order coal moulded coal body includes biological particles, low-order coal and organic binder bond, described to have
Machine binding agent is weightless less than 50% in 850 DEG C of destructive distillation completely cut off under air conditionses；
In mass, the quality of the low-order coal moulded coal body is the moulded coal material quality
40-70%, the addition of the biological particles is the 20-50% of this weight of the low-order coal moulded coal.
The biological particles are formed by biomass material through drying, crushing and in compacting under 5-40MPa；
The density of the biological particles is 1.2-1.4g/cm3。
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.
It is preferred that 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.
The quality of the low-order coal moulded coal body is the 40-50% of the moulded coal material quality.
The addition of the biological particles is the 20-35% of this weight of the low-order coal moulded coal.
The low-order coal moulded coal body is cuboid or inverted ladder-shaped body shape, and the biological particles are embedded at
The inside and surface of the cuboid or the inverted ladder-shaped body.
The moulded coal raw material is cuboid or inverted ladder-shaped body, and the non-low-order coal moulded coal layer is arranged at described
The upper surface of low-order coal moulded coal body, lower surface and the relative two sides of the low-order coal moulded coal body one.
The biological particles contained in moulded coal raw material of the present invention can be arbitrary shape, its body
Product is with no more than 25cm3It is advisable.
Above-mentioned technical proposal of the invention has the following advantages that：
1st, the moulded coal raw material for being coated with low-order coal and biological particles that the present invention is provided, by being added in
The weightless organic binder bond less than 50% of destructive distillation under 850 DEG C of isolation air conditionses, will be low using its caking property
Rank coal and biological particles molding bonded, on the one hand can enable low-order coal and biological particles push and smash
Gu upgrading treatment is carried out in coke oven, on the other hand also so that after the completion of low-order coal and biological particles upgrading
Solid product be not pulverized easily, it is easy to the coke pushing of tamping coke furnace, it is often more important that above-mentioned organic binder bond
After mixing with low-order coal and biological particles, the active ingredient in organic binder bond can promote low-order coal and
High molecular polymer in biomass degraded at high temperature, so as to be favorably improved low-order coal and biology
The oil and gas production of matter raw material, makes oil gas total amount increase production more than 10%.
Also, moulded coal raw material of the invention is arranged on low-order coal moulded coal sheet by by non-low-order coal moulded coal layer
The outside of body so that the liquid that low-order coal moulded coal body is produced in high temperature grading process is penetrated into non-low
In rank coal type coal seam, the quality of the coke of low-order coal moulded coal body generation is favorably improved.Thus, originally
It is low because making in the absence of large-scale industrialization equipment that the moulded coal raw material of invention not only solves prior art
The limited problem of rank coal and biomass application, also effectively overcome existing tamping coke furnace availability it is low,
The problem of coking industry production capacity surplus.
Moulded coal raw material of the invention is made full use of during high-temperature retorting can make biomass such as agricultural wastes straw
Organic matter conversion olefiant gas and residue can be used as the burnt characteristic of chemical industry, by low-order coal moulded coal
The appropriate biological particles of insertion in body, not only contribute to reducing the bar of moulded coal raw material production cost
Oil gas and coke yield higher is still ensured that under part, the resource to biomass energy can be also effectively realized
Utilize, reduce the environmental pollution caused by being burned because of the blindness of agricultural wastes so that type of the invention
The existing considerable economic benefit of coal raw material has certain social benefit again.
2nd, the moulded coal raw material for being coated with low-order coal and biological particles that the present invention is provided, it is preferably organic viscous
Knot agent is coal asphalt or petroleum asphalt of the softening point not less than 120 DEG C, can so improve low-order coal and biology
The quality of the solid product-coke after matter raw material upgrading so that the volatile matter in coke is not 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 moulded coal raw material of the present invention is applied to all of low-order coal, scala media coal, high-order
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 lignite
As a example by, 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, with
In lower embodiment, 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+biological particles),
" kg/t dry coals " refers to kilogram number, " Nm of the product that dry coal per ton is obtained3/ t dry coals " refer to dry coal per ton
The volume of the raw gas for obtaining is converted into 25 DEG C, the 1 cubic meter numbers of normal atmosphere pressure.
Embodiment 1
(1) it is after being pressed into density under 5MPa by stalk bundling that water content is 17wt% or so
1.2g/cm3Particulate matter, 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 bulk stock 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 low order coal bulk stock, in mass, the addition of particulate matter is low-order coal bulk stock quality
20wt%, 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 bottom, and the low-order coal of 1/3 coking coal and step (2) is added on the non-low-order coal moulded coal bottom
Bulk stock, in this course 1/3 coking coal along coaling case two ends add, i.e., 1/3 coking coal encloses
Around low-order coal bulk stock coaling the process of powder, and continuation is entered using tamping machine to above-mentioned coal raw material
Row makes shaping firm by ramming, forms moulded coal middle level, and finally continuously adding 1/3 coking coal on the moulded coal middle level is carried out
Make shaping firm by ramming, form non-low-order coal moulded coal top layer, so as to obtain final moulded coal raw material, that is to say,
The middle part of moulded coal raw material is low-order coal moulded coal body, the upper and lower, left and right side of low-order coal moulded coal body
It is coated with 1/3 coking coal layer；
In mass, the addition of low-order coal bulk stock is the 40wt% of moulded coal material quality；
(4) upgrading treatment will be carried out in the moulded coal raw material push-in coke oven of step (3), controls upgrading temperature
It is 850 DEG C to spend, and the upgrading time is 16 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 390Nm3/ t dry coals, the amount of the tar
It is 56kg/t dry coals, the amount of the crude benzol is 14kg/t dry coals, and the amount of the coke is 645kg/t
Dry coal, the solids carbon content in the coke is not more than 5%, Jiao not less than 80%, volatile matter content
Particle diameter is the 70% 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 2
(1) it is after being pressed into density under 22.5MPa by stalk bundling that water content is 17wt% or so
1.3g/cm3Particulate matter, it is standby；
(2) particulate matter after crushing ub-bituminous coal and organic binder bond jointly with step (1) is mixed,
Low-order coal bulk stock 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 bulk stock, in mass, the addition of particulate matter is low-order coal bulk stock quality
35wt%, 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 bottom
Layer, and the low-order coal bulk stock of coking coal and step (2) is added on the non-low-order coal moulded coal bottom,
Coking coal is added along the two ends of case of coalingging in this course, i.e., coking coal is carried out around low-order coal bulk stock
Coaling the process of powder, continue above-mentioned coal raw material to be carried out using tamping machine make shaping, formation moulded coal firm by ramming
Middle level, coking coal is finally continuously added on the moulded coal middle level to carry out making shaping firm by ramming, forms non-low order coal type
Coal top layer, so as to obtain final moulded coal raw material, the i.e. middle part of moulded coal raw material for low-order coal moulded coal body,
The upper and lower, left and right side of low-order coal moulded coal body is coated with coking coal layer；
In mass, the addition of low-order coal bulk stock is the 47.5wt% of moulded coal material quality；
(4) upgrading treatment will be carried out in the moulded coal raw material push-in coke oven of step (3), controls upgrading temperature
It is 850 DEG C to spend, and the upgrading time is 16 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 415Nm3/ t dry coals, the amount of the tar
It is 56kg/t dry coals, the amount of the crude benzol is 14kg/t dry coals, and the amount of the coke is 605kg/t
Dry coal, the solids carbon content in the coke is not more than 5%, Jiao not less than 80%, volatile matter content
Particle diameter is the 45% 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 65% of coke gross mass.
Embodiment 3
(1) it is after being pressed into density under 40MPa by stalk bundling that water content is 17wt% or so
1.4g/cm3Particulate matter, 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 bulk stock；
Wherein, the G values of lignite are 0, and volatile content is 60%；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 coal bulk stock, in mass, the addition of particulate matter is low-order coal bulk stock 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 bottom, and the low-order coal sheet of 1/3 coking coal and step (2) is added on the non-low-order coal moulded coal bottom
Body raw material, in this course coking coal along coaling case two ends add, i.e., coking coal is around low-order coal body
Raw material coaling the process of powder, and continuation carries out making shaping firm by ramming using tamping machine to above-mentioned coal raw material,
Moulded coal middle level is formed, 1/3 coking coal is finally continuously added on the moulded coal middle level carries out making shaping, shape firm by ramming
It is low so as to obtain final moulded coal raw material, the i.e. middle part of moulded coal raw material into non-low-order coal moulded coal top layer
Rank coal type coal body, the upper and lower, left and right side of low-order coal moulded coal body is coated with 1/3 coking coal layer；
In mass, the addition of low-order coal bulk stock is the 45wt% of moulded coal material quality；
(4) upgrading treatment will be carried out in the moulded coal raw material push-in coke oven of step (3), controls upgrading temperature
It is 850 DEG C to spend, and the upgrading time is 16 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 tar, and the amount of the raw gas is 450Nm3/ t dry coals, the amount of the tar
It is 66kg/t dry coals, the amount of the crude benzol is 15kg/t dry coals, and the amount of the coke is 582kg/t
Dry coal, the solids carbon content in the coke is not more than 5%, 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.
Embodiment 4
(1) it is after being pressed into density under 10MPa by stalk bundling that water content is 17wt% or so
1.3g/cm3Particulate matter, 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 bulk stock；
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 sheet
In body raw material, in mass, the addition of particulate matter is the 25wt% of low-order coal bulk stock quality, is had
The addition of machine binding agent 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 bottom
Layer, and the low-order coal bulk stock of coking coal and step (2) is added on the non-low-order coal moulded coal bottom,
Coking coal is added along the two ends of case of coalingging in this course, i.e., coking coal is carried out around low-order coal bulk stock
Coaling the process of powder, continue above-mentioned coal raw material to be carried out using tamping machine make shaping, formation moulded coal firm by ramming
Middle level, coking coal is finally continuously added on the moulded coal middle level to carry out making shaping firm by ramming, forms non-low order coal type
Coal top layer, so as to obtain final moulded coal raw material, the i.e. middle part of moulded coal raw material for low-order coal moulded coal body,
The upper and lower, left and right side of low-order coal moulded coal body is coated with coking coal layer；
In mass, the addition of low-order coal bulk stock is the 50wt% of moulded coal material quality；
(4) upgrading treatment will be carried out in the moulded coal raw material push-in coke oven of step (3), controls upgrading temperature
It is 850 DEG C to spend, and the upgrading time is 16 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 460Nm3/ t dry coals, the amount of the tar
It is 65kg/t dry coals, the amount of the crude benzol is 14kg/t dry coals, and the amount of the coke is 580kg/t
Dry coal, the solids carbon content in the coke is not more than 5%, 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 55% 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 moulded coal raw material for being coated with low-order coal and biological particles, including,
Low-order coal moulded coal body and the non-low-order coal moulded coal for being coated on the low-order coal moulded coal body exterior
Layer, the non-low-order coal moulded coal layer is by one or more systems in scala media coal, high-order coal or middle high-order coal
Into；It is characterized in that：
The low-order coal moulded coal body includes biological particles, low-order coal and organic binder bond, described to have
Machine binding agent is weightless less than 50% in 850 DEG C of destructive distillation completely cut off under air conditionses；
In mass, the quality of the low-order coal moulded coal body is the moulded coal material quality
40-70%, the addition of the biological particles is the 20-50% of this weight of the low-order coal moulded coal.
2. moulded coal raw material according to claim 1, it is characterised in that the biological particles by
Biomass material is formed through drying, crushing and in compacting under 5-40MPa；
The density of the biological particles is 1.2-1.4g/cm3。
3. moulded coal raw material 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 moulded coal raw material 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.
It is preferred that the asphalitine is coal asphalt or petroleum asphalt of the softening point not less than 120 DEG C.
5. moulded coal raw material according to claim 4, it is characterised in that the asphalitine is high temperature
Pitch, in mass, more than 25%, C/Hratio is 8-11 to the fixed carbon content of the hard pitch.
6. the moulded coal raw material according to claim any one of 1-5, it is characterised in that the low order
The G values of coal are more than 40% less than 50, volatile matter content.
7. the moulded coal raw material according to claim any one of 1-6, it is characterised in that the low order
The quality of coal type coal body is the 40-50% of the moulded coal material quality.
8. the moulded coal raw material according to claim any one of 1-7, it is characterised in that the biology
The addition of matter particle is the 20-35% of this weight of the low-order coal moulded coal.
9. the moulded coal raw material according to claim any one of 1-8, it is characterised in that the low order
Coal type coal body be cuboid or inverted ladder-shaped body shape, the biological particles be embedded at the cuboid or
The inside and surface of the inverted ladder-shaped body.
10. moulded coal raw material according to claim 9, it is characterised in that the moulded coal raw material is length
Cube or inverted ladder-shaped body, the non-low-order coal moulded coal layer are arranged at the upper table of the low-order coal moulded coal body
Face, lower surface and the relative two sides of the low-order coal moulded coal body one.
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Application publication date: 20170707 |