CN106929067A - A kind of process for upgrading of the moulded coal raw material for being coated with low-order coal and particulate matter - Google Patents
A kind of process for upgrading of the moulded coal raw material for being coated with low-order coal and particulate matter Download PDFInfo
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- CN106929067A CN106929067A CN201511021191.0A CN201511021191A CN106929067A CN 106929067 A CN106929067 A CN 106929067A CN 201511021191 A CN201511021191 A CN 201511021191A CN 106929067 A CN106929067 A CN 106929067A
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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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- 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
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- Oil, Petroleum & Natural Gas (AREA)
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- General Chemical & Material Sciences (AREA)
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Abstract
The invention provides a kind of process for upgrading of the moulded coal raw material for being coated with low-order coal and particulate matter, including low-order coal bulk stock will be mixed to form with low-order coal, organic binder bond after the granulating mixture of biomass and rubbish；Non- low-order coal moulded coal bottom is pressed to form to non-low-order coal；The low-order coal bulk stock and non-low-order coal are added on the non-low-order coal moulded coal bottom, and the non-low-order coal is located at the periphery of the low-order coal bulk stock, continue to be pressed to form moulded coal middle level；Non- low-order coal is added on moulded coal middle level again and pressurization obtains moulded coal raw material；Upgrading is carried out to moulded coal raw material, raw gas, tar, crude benzol, coke is obtained.Process for upgrading 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, upgrading 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 for being coated with low-order coal and particulate matter suitable for tamping coke furnace
Process for upgrading, belong 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 process for upgrading 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 process for upgrading of the moulded coal raw material for being coated with 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 bulk stock 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 bulk stock quality in mass；
(3) non-low-order coal is press-formed, forms non-low-order coal moulded coal bottom；Described non-low
The low-order coal bulk stock and non-low-order coal are added on rank coal type coal bottom, and makes the non-low-order coal
Positioned at the periphery of the low-order coal bulk stock, to the low-order coal bulk stock and the non-low-order coal
It is press-formed, is formed moulded coal middle level；Again non-low-order coal is continuously added on the moulded coal middle level simultaneously
Extrusion forming, obtains final moulded coal raw material；
(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 850-950 DEG C to spend, and the upgrading time is 16-20 hours, collects raw gas, tar, the crude benzol for overflowing
Mixture, 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 addition of the low-order coal bulk stock is the moulded coal material quality
10-70%.
The addition of the low-order coal bulk stock is the 30-50% of the moulded coal material quality.
The addition of the particulate matter is the 20-35% of the low-order coal bulk stock quality.
The upgrading 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 process for upgrading 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 process for upgrading of the moulded coal raw material for being coated with low-order coal and particulate matter that the present invention is provided, passes through
The weightless organic binder bond less than 50% of destructive distillation under 850 DEG C of isolation air conditionses is added in, using its bonding
Property the particulate matter molding bonded that is formed by low-order coal and by biomass and rubbish, on the one hand can make low order
Coal and particulate matter can be pushed carry out in tamping coke furnace upgrading treatment, on the other hand also cause low-order coal and
Solid product after the completion of particulate matter upgrading is not pulverized easily, it is easy to the coke pushing of tamping coke furnace, prior
It is that the active ingredient in organic binder bond can after above-mentioned organic binder bond mixes with low-order coal and particulate matter
Promote the degraded at high temperature of high molecular polymer in low-order coal and biomass, so as to be favorably improved
The oil and gas production of low-order coal and biomass material, makes oil gas total amount increase production more than 10%.
Also, process for upgrading of the invention is arranged on the outer of low-order coal bulk stock by by non-low-order coal
Portion so that the liquid that low-order coal bulk stock is produced in high temperature grading process is penetrated into non-low-order coal,
It is favorably improved the quality of the coke of low-order coal bulk stock generation.Thus, process for upgrading of the invention
Prior art is not only solved because answering low-order coal and biomass in the absence of large-scale industrialization equipment
With limited problem, also effectively overcome that existing tamping coke furnace availability is low, upgrading industry production capacity mistake
Surplus problem.
Process for upgrading 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 particulate matter formed by biomass and rubbish in low-order coal, does not only have
Oil gas and coke yield higher is still ensured that beneficial under conditions of moulded coal raw material production cost is reduced,
Can also effectively realize the recycling to biomass and rubbish, reduce because of agricultural wastes and rubbish
Environmental pollution caused by blindly burning so that the existing considerable economic benefit of the present invention has certain again
Social benefit.
2nd, the process for upgrading of the moulded coal raw material for being coated with low-order coal and particulate matter that the present invention is provided, preferably
Organic binder bond is coal asphalt or petroleum asphalt of the softening point not less than 120 DEG C, can so improve low order
The quality of the solid product-coke after coal, biomass and garbage raw material upgrading so that waving in coke
Hair point is not more than a 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 process for upgrading 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 ease of comparing and illustrating, in following examples, wt% represents quality hundred
Point content, dry coal quality=(quality × 85%+ of the quality of low-order coal × 75%+ particulate matters is non-low
The quality of the quality of rank coal × 90%+ organic binder bonds), " kg/t dry coals " refers to the product that dry coal per ton is obtained
Kilogram number of product, " Nm3/ t dry coals " refer to the volume of the raw gas that dry coal per ton is obtained be converted into 25 DEG C, 1
The cubic meter number of individual 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 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 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 410Nm3/ t dry coals, the amount of the tar
It is 57kg/t dry coals, the amount of the crude benzol is 15kg/t dry coals, and the amount of the coke is 635kg/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) 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 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 30wt% 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 900 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 405Nm3/ t dry coals, the amount of the tar
It is 47kg/t dry coals, the amount of the crude benzol is 11kg/t dry coals, and the amount of the coke is 653kg/t
Dry coal, the solids carbon content in the coke is not more than 4%, Jiao not less than 80%, volatile matter content
Particle diameter is the 50% 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 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 bulk stock；
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 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 925 DEG C to spend, and the upgrading 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 tar, and the amount of the raw gas is 405Nm3/ t dry coals, the amount of the tar
It is 43kg/t dry coals, the amount of the crude benzol is 11kg/t dry coals, and the amount of the coke is 650kg/t
Dry coal, the solids carbon content in the coke is not more than 4%, Jiao not less than 80%, volatile matter content
Particle diameter is the 60% 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 85% 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 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 950 DEG C to spend, and the upgrading 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 440Nm3/ t dry coals, the amount of the tar
It is 42kg/t dry coals, the amount of the crude benzol is 11kg/t dry coals, and the amount of the coke is 625kg/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 35% 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 50% 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 process for upgrading of the moulded coal raw material for being coated with 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 bulk stock 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 bulk stock quality in mass；
(3) non-low-order coal is press-formed, forms non-low-order coal moulded coal bottom；Described non-low
The low-order coal bulk stock and non-low-order coal are added on rank coal type coal bottom, and makes the non-low-order coal
Positioned at the periphery of the low-order coal bulk stock, to the low-order coal bulk stock and the non-low-order coal
It is press-formed, is formed moulded coal middle level；Again non-low-order coal is continuously added on the moulded coal middle level simultaneously
Extrusion forming, obtains final moulded coal raw material；
(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 850-950 DEG C to spend, and the upgrading time is 16-20 hours, collects raw gas, tar, the crude benzol for overflowing
Mixture, while obtaining byproduct coke.
2. process for upgrading 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. process for upgrading 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 process for upgrading 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. process for upgrading according to claim 4, the asphalitine is that softening point is not less than 120 DEG C
Coal asphalt or petroleum asphalt.
6. the process for upgrading 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 process for upgrading 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 addition of the low-order coal bulk stock is the moulded coal material quality
10-70%.
8. process for upgrading according to claim 7, it is characterised in that the low-order coal body is former
The addition of material is the 30-50% of the moulded coal material quality.
9. the process for upgrading 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 bulk stock quality.
10. the process for upgrading according to claim any one of 1-9, it is characterised in that the upgrading
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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| CN1465656A (en) * | 2002-07-04 | 2004-01-07 | 首钢总公司 | Waste plastics and coal cocoaking treatment method |
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