CN107236556A - A kind of technique that upgrading is carried out to the molding mass containing low-order coal and biomass - Google Patents
A kind of technique that upgrading is carried out to the molding mass containing low-order coal and biomass Download PDFInfo
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- CN107236556A CN107236556A CN201610186433.XA CN201610186433A CN107236556A CN 107236556 A CN107236556 A CN 107236556A CN 201610186433 A CN201610186433 A CN 201610186433A CN 107236556 A CN107236556 A CN 107236556A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/02—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of cellulose-containing material
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- 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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
- Coke Industry (AREA)
Abstract
The invention provides a kind of technique for carrying out upgrading to the molding mass containing low-order coal and biomass, by the way that low-order coal is loaded in formed bundled materials of being packed by biomass, compression process is carried out to the obtained material with core shell structure under given conditions again, it can be prepared by the molding mass containing low-order coal and biomass, so on the one hand low-order coal and biomass material can be enable to be pushed into tamping coke furnace and carry out high-temperature retorting, on the other hand the solid product after low-order coal and biomass carbonization is also caused to be easy to release from tamping coke furnace, so as to obtain the raw gas of appreciable amount, tar, carbon residue.It can be seen that, technique of the invention can not only reduce oil gas and the cost of material of coke product, can also effectively realize the recycling of biomass so that the existing considerable economic benefit of the present invention has certain social benefit again.
Description
Technical field
The present invention relates to the burnt production technical field of gasification, more particularly to it is a kind of using tamping coke furnace to containing
The technique that the molding mass of low-order coal and biomass carries out upgrading.
Background technology
Since 18th century, coal turns 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 due to product of the low-order coal as incoalation initial stage,
With phosphorus content is low, moisture is high, it is easy efflorescence, easy spontaneous combustion, high fugitive constituent, 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, upgrading conversion and the comprehensive utilization of low-order coal already turn into current China's energy research and 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, low-order coal is in forming process, and the physical action such as high pressure or shearing is to its gel structure and hole
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 that the dust for solving drying low-order coal is big, easily absorb water again, easily
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 is applied 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., using biomass as the form of energy of carrier, it directly or indirectly derives 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 is converted into
Highdensity shaped fuel, directly burns or as gasification, liquefaction raw material, as biomass energy exploitation
A kind of effective way utilized, is also the effective ways for substituting conventional energy resource, Unfortunately, mesh
It is preceding not possess the equipment for applying biomass fuel heavy industrialization still.
Tamping coke furnace is the maximization equipment used in the coking process of coal, and its floor space is wide, investment
Capital cost is big.Coking of coal be by raw material of coal through high-temperature retorting produce coke, while obtain coal gas,
Coal tar and a kind of coal conversion process for reclaiming other chemical products, its coke product are mainly metallurgical coke
Or chemical industry is burnt.Due to industrially very high to the quality requirements of this kind of coke 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. were a large amount of in recent years needs the decline of metallurgical coke or the burnt industry of chemical industry, causes coke to produce
The demands of product is reduced, price declines, so as to force coke-oven plant drastically to reduce coke output, thus band
Come consequence be that tamping coke furnace is 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 maintain the operation of coke oven in minimum level, 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 summary, 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 prior art can not realize low-order coal and biomass energy
The problem of defect of large-scale application and low existing tamping coke furnace availability, and then a kind of use is provided
The technique that tamping coke furnace carries out upgrading to the molding mass containing low-order coal and biomass.
Therefore, the present invention realizes that the technical scheme of above-mentioned purpose is：
A kind of technique that upgrading is carried out to the molding mass containing low-order coal and biomass, comprises the following steps：
(1) biomass material is packed bundled, forms bundled materials；
(2) low-order coal is filled to the inside of the bundled materials, the material with core shell structure is formed；
(3) it is under conditions of 20-100 DEG C, 15-40MPa that the material is compressing, that is, it is made
Molding mass containing low-order coal and biomass；
(4) upgrading processing is carried out to the molding mass, it is 850-950 DEG C, upgrading to control upgrading temperature
Time is not less than 16 hours, the raw gas overflowed, tar is collected, while obtaining coke.
The water content of the biomass material is not more than 20wt%；The biomass material be stalk and/or
Wood wastes.
The volume of the bundled materials is not less than 0.5m3。
The water content of the low-order coal is not more than 20wt%.
In step (2), by the low-order coal and binding agent (9-7) in mass ratio：(1-3) mixes shape
Resulting mixture, then the mixture is filled to the inside of the bundled materials.
The binding agent is the organic adhesive that destructive distillation weightlessness is less than 50% under conditions of 850 DEG C of isolation air
Agent.
The mass ratio of the low-order coal and the bundled materials is 1：(1-5).
Power is 50-70 DEG C, 20-30MPa under conditions of the compacting.
The ratio between density of the molding mass and the material is (2-4)：1.
The upgrading processing is carried out in tamping coke furnace.
The present invention carries out compression process using hydraulic test to the above-mentioned material with core shell structure, according to
The difference of the shape and size of used mould, can be made the shaping with arbitrary shape and size
Material.Preferably, the shape and size of the molding mass produced by the present invention containing low-order coal and biomass are with smashing
Gu the carbonization chamber of coke oven matches.
The above-mentioned technical proposal of the present invention has the following advantages that：
1st, the technique that upgrading is carried out to the molding mass containing low-order coal and biomass that the present invention is provided, leads to
Cross and low-order coal is loaded in formed bundled materials of being packed by biomass, then under given conditions to obtaining
The material with core shell structure arrived carries out compression process, you can be made containing low-order coal and biomass into
On the one hand moulding mixture, so can enable low-order coal and biomass material be pushed into tamping coke furnace and carry out high temperature
Destructive distillation, on the other hand also causes the solid product after low-order coal and biomass carbonization to be not pulverized easily, it is easy to
The coke pushing of tamping coke furnace, so as to obtain the raw gas of appreciable amount, tar, carbon residue.It can be seen that, the present invention
Technique can not only reduce oil gas and the cost of material of coke product, can also effectively realize biomass
Recycling so that the existing considerable economic benefit of the present invention has certain social benefit again.Thus,
The technique of the present invention not only solves prior art because making low order in the absence of large-scale industrialization equipment
The problem of coal and biomass application limited, also effectively overcome that existing tamping coke furnace availability is low, Jiao
The problem of changing industry production capacity surplus.
2nd, the technique that upgrading is carried out to the molding mass containing low-order coal and biomass that the present invention is provided, excellent
The mixture of low-order coal and binding agent is filled to the inside of the bundled materials by choosing, further preferably bonds
Agent is the organic binder bond that destructive distillation weightlessness is less than 50% under conditions of 850 DEG C of isolation air so that bonded
Active ingredient in agent can promote the drop of high molecular polymer at high temperature in low-order coal and biomass
Solution, so as to be favorably improved the oil and gas production of low-order coal and biomass material, increases production oil gas total amount
More than 10%.And in forming process, certain pressure effect promote binding agent by biomass with it is low
Rank coal is bonded so that the liquid that low-order coal and biomass material are produced during high-temperature retorting can ooze
Enter into binding agent, be so favorably improved the quality for the coke that low-order coal and biomass are produced.
Embodiment
Technical scheme will be clearly and completely described below, it is clear that described
Embodiment is a part of embodiment of the present 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.In addition, 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 embodiment.
Low-order coal composition in molding mass produced by the present invention is applied to all low-order coal coal or it is mixed
Compound, for purposes of illustration only, the low-order coal in following embodiments is by taking ub-bituminous coal or lignite as an example.Following
In embodiment, wt% represents weight/mass percentage composition, quality=((quality+biology of low-order coal of molding mass
The quality of matter) × 80%+ binding agents quality), " kg/t molding mass " refers to the production that molding mass per ton is obtained
Kilogram number of product, " Nm3/ t molding mass " refer to the raw gas that molding mass per ton is obtained volume be converted into 0 DEG C,
The cubic meter number of 1 normal atmosphere pressure.
Embodiment 1
The technique that upgrading is carried out to the molding mass containing low-order coal and biomass described in the present embodiment, bag
Include following steps：
(1) it is water content is bundled for 18wt% stalk packing, volume is obtained for 0.5m3Rectangular-shape
Bundled materials；
(2) water content is filled to the inside of the bundled materials for 20wt% ub-bituminous coal, formation has
The material of core shell structure；The mass ratio of the ub-bituminous coal and the bundled materials is 1：5；
(3) it is under conditions of 50 DEG C, 15MPa that the material is compressing, that is, it is made and contains low-order coal
With the molding mass of biomass, the ratio between density of the molding mass and bundled materials is 2：1；
(4) molding mass is pushed into tamping coke furnace and carries out upgrading processing, control the upgrading temperature to be
850 DEG C, the upgrading time is 16 hours, the raw gas overflowed, tar is collected, while obtaining carbon residue.
The amount for the raw gas that the present embodiment is obtained is 390Nm3/ t molding mass, the amount of tar for 35kg/t into
Moulding mixture, the amount of coke is 350kg/t molding mass, in mass, the solids carbon content wherein in coke
It is not more than 6% not less than 50%, volatile matter content, of the particle diameter in more than 40mm after coke screening
Grain gross mass is the 10% of coke gross mass, and particle diameter is total for coke in more than 25mm particle gross mass
The 20% of quality.
Embodiment 2
The technique that upgrading is carried out to the molding mass containing low-order coal and biomass described in the present embodiment, bag
Include following steps：
(1) it is water content is bundled for 15wt% stalk packing, volume is obtained for 0.5m3Rectangular-shape
Bundled materials；
(2) water content is filled to the inside of the bundled materials for 15wt% lignite, being formed has core
The material of shell structure；The mass ratio of the lignite and the bundled materials is 1：3；
(3) it is under conditions of 100 DEG C, 30MPa that the material is compressing, that is, it is made and contains low order
The ratio between density of the molding mass of coal and biomass, the molding mass and bundled materials is 3：1；
(4) molding mass is pushed into tamping coke furnace and carries out upgrading processing, control the upgrading temperature to be
950 DEG C, the upgrading time is 18 hours, the raw gas overflowed, tar is collected, while obtaining carbon residue.
The amount for the raw gas that the present embodiment is obtained is 470Nm3/ t molding mass, the amount of tar for 38kg/t into
Moulding mixture, the amount of coke is 359kg/t molding mass, in mass, the solids carbon content wherein in coke
It is not more than 5% not less than 50%, volatile matter content, of the particle diameter in more than 40mm after coke screening
Grain gross mass is the 10% of coke gross mass, and particle diameter is total for coke in more than 25mm particle gross mass
The 20% of quality.
Embodiment 3
The technique that upgrading is carried out to the molding mass containing low-order coal and biomass described in the present embodiment, bag
Include following steps：
(1) it is water content is bundled for 16wt% stalk packing, volume is obtained for 0.5m3Rectangular-shape
Bundled materials；
(2) by ub-bituminous coal and binding agent in mass ratio 9 of the water content for 17wt%：1 mixes formation mixing
Thing, then the mixture is filled to the inside of the bundled materials, form the material with core shell structure；
The mass ratio of the ub-bituminous coal and the bundled materials is 1：1, the binding agent be 850 DEG C every
Destructive distillation weightlessness is less than 50% organic binder bond under conditions of exhausted air, described in the present embodiment organic viscous
Knot agent is preferably the coal tar pitch that softening point is 120 DEG C；
(3) it is under conditions of 70 DEG C, 20MPa that the material is compressing, that is, it is made and contains low-order coal
With the molding mass of biomass, the ratio between density of the molding mass and bundled materials is 2.5：1；
(4) molding mass is pushed into tamping coke furnace and carries out upgrading processing, control the upgrading temperature to be
900 DEG C, the upgrading time is 20 hours, the raw gas overflowed, tar is collected, while obtaining carbon residue.
The amount for the raw gas that the present embodiment is obtained is 530Nm3/ t molding mass, the amount of tar for 54kg/t into
Moulding mixture, the amount of coke is 395kg/t molding mass, in mass, the solids carbon content wherein in coke
It is not more than 5% not less than 50%, volatile matter content, of the particle diameter in more than 40mm after coke screening
Grain gross mass is the 25% of coke gross mass, and particle diameter is total for coke in more than 25mm particle gross mass
The 50% of quality.
Embodiment 4
The technique that upgrading is carried out to the molding mass containing low-order coal and biomass described in the present embodiment, bag
Include following steps：
(1) it is water content is bundled for 16wt% stalk packing, volume is obtained for 0.5m3Rectangular-shape
Bundled materials；
(2) by ub-bituminous coal and binding agent in mass ratio 7 of the water content for 18wt%：3 mix formation mixing
Thing, then the mixture is filled to the inside of the bundled materials, form the material with core shell structure；
The mass ratio of the ub-bituminous coal and the bundled materials is 1：2, the binding agent be 850 DEG C every
Destructive distillation weightlessness is less than 50% organic binder bond under conditions of exhausted air, described in the present embodiment organic viscous
Knot agent is preferably the asphalt that softening point is 125 DEG C；
(3) it is under conditions of 20 DEG C, 40MPa that the material is compressing, that is, it is made and contains low-order coal
With the molding mass of biomass, the ratio between density of the molding mass and bundled materials is 4：1；
(4) molding mass is pushed into tamping coke furnace and carries out upgrading processing, control the upgrading temperature to be
850 DEG C, the upgrading time is 20 hours, the raw gas overflowed, tar is collected, while obtaining carbon residue.
The amount for the raw gas that the present embodiment is obtained is 475Nm3/ t molding mass, the amount of tar for 43kg/t into
Moulding mixture, the amount of coke is 390kg/t molding mass, in mass, the solids carbon content wherein in coke
It is not more than 6% not less than 50%, volatile matter content, of the particle diameter in more than 40mm after coke screening
Grain gross mass is the 40% of coke gross mass, and particle diameter is total for coke in more than 25mm particle gross mass
The 60% of quality.
Embodiment 5
The technique that upgrading is carried out to the molding mass containing low-order coal and biomass described in the present embodiment, bag
Include following steps：
(1) it is water content is bundled for 16wt% stalk packing, volume is obtained for 0.5m3Rectangular-shape
Bundled materials；
(2) by ub-bituminous coal and binding agent in mass ratio 4 of the water content for 15wt%：1 mixes formation mixing
Thing, then the mixture is filled to the inside of the bundled materials, form the material with core shell structure；
The mass ratio of the ub-bituminous coal and the bundled materials is 1：4, the binding agent be 850 DEG C every
Destructive distillation weightlessness is less than 50% organic binder bond under conditions of exhausted air, described in the present embodiment organic viscous
Knot agent is preferably the coal tar pitch that softening point is 130 DEG C；
(3) it is under conditions of 60 DEG C, 25MPa that the material is compressing, that is, it is made and contains low-order coal
With the molding mass of biomass, the ratio between density of the molding mass and bundled materials is 3.5：1；
(4) the biomass moulding material is pushed into tamping coke furnace and carries out upgrading processing, control upgrading temperature
Spend for 900 DEG C, the upgrading time is 16 hours, the raw gas overflowed, tar is collected, while obtaining residual
Charcoal.
The amount for the raw gas that the present embodiment is obtained is 450Nm3/ t molding mass, the amount of tar for 37kg/t into
Moulding mixture, the amount of coke is 365kg/t molding mass, in mass, the solids carbon content wherein in coke
It is not more than 5% not less than 50%, volatile matter content, of the particle diameter in more than 40mm after coke screening
Grain gross mass is the 20% of coke gross mass, and particle diameter is total for coke in more than 25mm particle gross mass
The 40% of quality.
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 embodiments
With exhaustion.And the obvious changes or variations thus extended out is still in the guarantor of the invention
Protect among scope.
Claims (10)
1. a kind of carry out process for upgrading to the molding mass containing low-order coal and biomass, comprise the following steps：
(1) biomass material is packed bundled, forms bundled materials；
(2) low-order coal is filled to the inside of the bundled materials, the material with core shell structure is formed；
(3) it is under conditions of 20-100 DEG C, 15-40MPa that the material is compressing, that is, it is made
Molding mass containing low-order coal and biomass；
(4) upgrading processing is carried out to the molding mass, it is 850-950 DEG C, upgrading to control upgrading temperature
Time is not less than 16 hours, the raw gas overflowed, tar is collected, while obtaining carbon residue.
2. process for upgrading according to claim 1, it is characterised in that the biomass material
Water content is not more than 20wt%；The biomass material is stalk and/or wood wastes.
3. process for upgrading according to claim 1 or 2, it is characterised in that the bundled materials
Volume is not less than 0.5m3。
4. the process for upgrading according to claim any one of 1-3, it is characterised in that the low order
The water content of coal is not more than 20wt%.
5. the process for upgrading according to claim any one of 1-4, it is characterised in that step (2)
In, by the low-order coal and binding agent (9-7) in mass ratio：(1-3), which is mixed, forms mixture, then will
The mixture is filled to the inside of the bundled materials.
6. the process for upgrading according to claim any one of 1-5, it is characterised in that the bonding
Agent is the organic binder bond that destructive distillation weightlessness is less than 50% under conditions of 850 DEG C of isolation air.
7. the process for upgrading according to claim any one of 1-6, it is characterised in that the low order
The mass ratio of coal and the bundled materials is 1：(1-5).
8. the process for upgrading according to claim any one of 1-7, it is characterised in that the compacting
Under conditions of power be 50-70 DEG C, 20-30MPa.
9. the process for upgrading according to claim any one of 1-8, it is characterised in that the shaping
The ratio between density of material and the material is (2-4)：1.
10. the process for upgrading according to claim any one of 1-9, it is characterised in that the upgrading
Processing is carried out in tamping coke furnace.
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| WO1986004404A1 (en) * | 1985-01-17 | 1986-07-31 | Nordfab A/S | Apparatus for tearing up and stocking bales of straw material and for stocking other kinds of solid fuel |
| CN102191096A (en) * | 2010-04-09 | 2011-09-21 | 神华集团有限责任公司 | Biomass briquette, especially biomass briquette without binder |
| CN102719264A (en) * | 2011-03-29 | 2012-10-10 | 鞍钢股份有限公司 | High-reactivity coke and manufacture method thereof |
| CN105400534A (en) * | 2014-09-16 | 2016-03-16 | 北京三聚环保新材料股份有限公司 | Coking process raw materials |
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