CN105733624B - A kind of coking process of the moulded coal including biomass and low-order coal - Google Patents
A kind of coking process of the moulded coal including biomass and low-order coal Download PDFInfo
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- CN105733624B CN105733624B CN201410768724.0A CN201410768724A CN105733624B CN 105733624 B CN105733624 B CN 105733624B CN 201410768724 A CN201410768724 A CN 201410768724A CN 105733624 B CN105733624 B CN 105733624B
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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
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Abstract
The invention discloses a kind of coking process of moulded coal including biomass and low-order coal, first low-order coal moulded coal raw material of the molding containing biomass；Then coking is carried out to the moulded coal raw material, the moulded coal including biomass and low-order coal includes the non-low-order coal moulded coal layer formed by one or more of scala media coal, high-order coal or middle high-order coal, with the low-order coal moulded coal layer being set on the non-low-order coal moulded coal layer, the low-order coal moulded coal layer includes low-order coal and biomass.Moulded coal coking process of the invention, the problem of not only solving low existing tamping coke furnace availability, coking industry excess capacity, also solve the problem for keeping its application limited due to no large-scale industrialization equipment for low-order coal, improve the availability of the biomass energies such as stalk, agriculture and forestry organic waste material, new Treatment of Sludge mode is developed, solves influence of the Leachate site generated with sludge sanitary landfills to ambient enviroment.
Description
Technical field
The present invention relates to a kind of coking process, and in particular to a kind of to make furnace firm by ramming using existing to include biomass and low-order coal
Moulded coal be raw material coking process, belong to the transformation technology field of coal.
Background technique
Different coals according to structure and composition are divided into 3 major class of lignite, bituminous coal and anthracite, and metabituminous coal is divided into low change again
Matter bituminous coal and mesometamorphism bituminous coal, it is lower-grade metamorphic bituminous to be called ub-bituminous coal, " low-order coal " is referred to as together with lignite.Low-order coal is coalification
The product at effect initial stage, with phosphorus content is low, moisture is high, easy dusting, easy spontaneous combustion, fugitive constituent is high, soak intensity difference, anti-dropping intensity
The feature of difference, these characteristics limit the direct development and utilization to low-order coal, but according to statistics, and China's low order coal reserves has accounted for the whole nation
55% or more of coal reserves is verified, up to 561,200,000,000 tons, this undoubtedly causes a kind of waste of resource.And as the domestic energy needs
The increasingly increase asked falls sharply with high-quality coal stock number, and the conversion comprehensive utilization of low-order coal becomes the coke that people increasingly pay close attention to
Point.
Biomass refers to the various organisms generated using big gas and water, soil etc. by photosynthesis, i.e., one cuts with life
The organic substance that can be grown of life, the notional biomass of narrow sense are primarily referred to as in agriculture and forestry production process except grain, fruit
During the lignocellulosics such as stalk, trees in addition, farming industry leftover bits and pieces, agriculture and forestry organic waste material and Animal husbandry production
The substances such as fowl and animal excrement and waste.Currently, for biomass energies such as the lignocellulosics such as stalk, trees, agriculture and forestry organic waste materials
Utilization primarily as fuel combustion, just since its calorific value is low, cause utilization rate low, locate most of biomass energy still
In the state given it up.In addition, producing a large amount of house refuse and waste water, life rubbish with the improvement of people ' s living standards
The sludge generated after rubbish and wastewater treatment mostly uses greatly the mode of sanitary landfills to be disposed, but its landfill Leachate site generated is
A kind of liquid seriously polluted, meeting polluted underground water environment, and there is the methane such as treatment measures of landfill yard generation are inappropriate can produce
Raw explosion, from generalized concept, house refuse and wastewater sludge belong to the scope of biomass energy, if carried out
It rationally utilizes, the living environment for improving people equally has great importance.
Tamping coke furnace is the enlarged equipment used in the coking process of coal, and occupied area is wide, and investment capital cost is big,
High-temperature coking is primarily referred to as using the coking process that tamping coke furnace carries out coking to obtain coke and recycling chemical products, coke
Product is mainly that metallurgical coke or chemical industry are burnt, and due to the quality requirements industrially to metallurgical coke or chemical industry coke, the coal for using it is former
Material includes mainly the coals such as coking coal, 1/3 coking coal, bottle coal, rich coal, lean coal, meager lean coal, belongs to mesometamorphism bituminous coal, due in recent years
The shortage of coal resources, especially for coking industry middle high-quality coal raw material reduction so that the raw material of coking industry at
This is growing day by day, in addition the decline of a large amount of industries for needing metallurgical coke or chemical industry coke such as steel, metallurgy in recent years, so that coke needs
The amount of asking is reduced, price declines, so that coke-oven plant be forced to reduce coke output.It is contradictory to be, once coke output reduces, make firm by ramming
Coke oven can be deactivated, and tamping coke furnace is once out of service can scrap, therefore in order to protect the stamp-charging coke for furnishing a huge amount of money for invest to build
Furnace apparatus would have to the operation that coke oven is maintained in minimum level, to cause coke output that cannot subtract by market demand
It is few, bring the excess capacity of coking industry, two contradict under how in the case where meeting coke normal volume, keep making firm by ramming
The operation of coke oven becomes key.
The big but exploitation in view of the biomass energies such as the lignocellulosics such as low-order coal and stalk, trees and agriculture and forestry organic waste material quantity
The inadequate problem of availability, and combine the status of current coking industry excess capacity, if it is possible to by middle high-order coking of coal technique
The tamping coke furnace of use is applied in the trans-utilization technique of low-order coal or biomass, then not only facilitating solution coking industry
The problem of excess capacity, moreover it is possible to be promoted the application of the biomass energies such as low-order coal, lignocellulosic and agriculture and forestry organic waste material.
But the biomass energies such as the lignocellulosics such as low-order coal and stalk, trees and agriculture and forestry organic waste material all have volatile matter height, Yi Fen
Change, the feature that ash content is high, the middle high-order coal feedstock specifications used with existing tamping coke furnace are entirely different, it is not easily molded first
The characteristics of determine that can not push it into tamping coke furnace carries out coking, secondly the solid product after its upgrading or coking is the low of dusting
Quality products, the product of dusting cause tamping coke furnace to be difficult to coke pushing outward again, still limit the use of tamping coke furnace.
Summary of the invention
It is large-scale developed and utilized to solve the problems, such as that the biomass resources such as low-order coal in the prior art and straw cannot achieve
And the problem that existing coking industry excess capacity, tamping coke furnace availability are low, thus provide it is a kind of using it is existing make firm by ramming furnace with
Moulded coal including biomass and low-order coal is the coking process of raw material.
For this purpose, the technical scheme adopted by the invention is as follows,
A kind of coking process of the moulded coal including biomass and low-order coal, (1) form the low-order coal moulded coal containing biomass
Raw material；(2) coking is carried out to the low-order coal moulded coal raw material containing biomass of the step (1), control coking temperature is 1000-
1400 DEG C, scorch time is not less than 15h, collects the raw gas of spilling, the mixture of tar and crude benzol, while obtaining byproduct coke
Charcoal；
Wherein, the moulded coal including biomass and low-order coal includes by one in scala media coal, high-order coal or middle high-order coal
Kind or the non-low-order coal moulded coal layer of several formation, and the low-order coal moulded coal layer being set on the non-low-order coal moulded coal layer, it is described
Low-order coal moulded coal layer includes low-order coal and biomass, and in mass, the additional amount of the low-order coal is the low-order coal moulded coal layer
The 20-80wt% of quality.
Preferably, the coking process is passed through carbon dioxide and/or water in coking latter stage.
Preferably, the low-order coal moulded coal layer further includes house refuse and/or sludge.
Preferably, the biomass is lignocellulose biomass.
Preferably, the lignocellulose biomass is straw, trees or agriculture and forestry organic waste material.
It preferably, further include auxiliary agent in the low-order coal moulded coal layer, the auxiliary agent is weightless in 850 DEG C of isolation air destructive distillation
Organic binder less than 50%, the additional amount of the auxiliary agent are the 5-30wt% of the low order coal quality.
Preferably, the organic binder is the asphalitine that softening point is greater than 100 DEG C.
Preferably, the asphalitine is coal asphalt or petroleum asphalt, and the softening point of the asphalitine is not less than 140 DEG C.
Preferably, the asphalitine is hard pitch, and the fixation carbon content of the hard pitch is 25% or more, C/Hratio
For 8-11.
Preferably, before forming the non-low-order coal moulded coal layer, further include the steps that carrying out dehydration and drying to sludge.
Preferably, before forming the non-low-order coal moulded coal layer, further include house refuse is sorted with select select it is flammable
The step of ingredient.Preferably, for the G value of the low-order coal less than 50, volatile content is greater than 40%.
Compared with prior art, the invention has the advantages that,
(1) coking process of the moulded coal including biomass and low-order coal in the present invention, not only solves existing tamping coke furnace
The problem of availability is low, coking industry excess capacity, also solves for low-order coal since no large-scale industrialization equipment makes
The limited problem of its application, improves the availability of the biomass energies such as straw, agriculture and forestry organic waste material, develops new Treatment of Sludge
Mode solves influence of the Leachate site generated with sludge sanitary landfills to ambient enviroment.
(2) it is added in the feed coal in the application in the 850 DEG C of isolation asphalitine conducts of air destructive distillation weightlessness less than 50%
On the one hand binder is conducive to moulded coal and forms in tamping machine, thus can be pushed into tamping coke furnace carry out upgrading or
Coking, its solid product is not pulverized easily after the completion of the processing of another aspect technical process, is easy to the coke pushing of tamping coke furnace, most important
It is after the auxiliary agent is mixed with low-order coal, the high molecular polymer that wherein effective component in auxiliary agent facilitates in low-order coal exists
High molecular fracture in degradation and low-order coal under high temperature increases oil gas total amount to improve the yield of oil gas in technical process
10% or more is produced, while penetrating into non-low-order coal moulded coal layer under the liquid that generates during the high temperature treatment process of low-order coal and helping to improve
The quality for the coke that low-order coal moulded coal layer generates.
(3) coking process of the moulded coal including biomass and low-order coal in the present invention, the auxiliary agent are coal tar pitch or petroleum
Pitch improves its solid product-coke quality after the completion of low-order coal upgrading, and volatile matter makes no more than 3-4% in coke
To by-product coke can be used for generating electricity, gas making and other chemical industry purposes.
(4) the application includes in the coking process of the moulded coal of biomass and low-order coal, and low-order coal moulded coal layer further includes life
Rubbish, sludge or lignocellulose biomass.These ingredients stability difference compared with low-order coal mentions in process treatment process
Preceding processed, tar, raw gas or crude benzol to generate in low-order coal coking provide escape route, so as in coking
In the process by the more faster extraction coke oven of coke-stove gas, reduces the repetition burning of coke-stove gas, reduce volatile matter and pass through coal
The decomposition loss of high-temperature region, significantly promotes the yield of tar, crude benzol and coke-stove gas during coking, accelerates to finish in cake
Burnt speed.
(5) in the treatment process of the application, technique latter stage is passed through or mixtures thereof carbon dioxide, water, makes it in high temperature
It reacts under environment with the carbon during low-order coal coking, generates CO, the yield of CO in raw gas is improved, thus subsequent
Raw gas conversion in more fuel gas are provided, improve the value of raw gas, and then improve the economic benefit of enterprise.
Specific embodiment
All low-order coal, scala media coal, high-order coal or middle high-order coal raw materials can be used as the coal in the application moulded coal raw material
Ingredient, for purposes of illustration only, low-order coal is by taking ub-bituminous coal or lignite as an example in following embodiments, the coal raw material of non-low-order coal is with 1/3 coke
For coal or coking coal.
Wherein, quality=low-order coal quality of dry coal × 75%+ non-low-order coal quality × 90%+ auxiliary agent quality,
" kg/t dry coal " refers to that dry coal meter per ton obtains how many kilograms of product.
Embodiment 1
(1) it is mixed to form low-order coal raw material by straw crushing and with lignite, spare, wherein the mass ratio of lignite and straw is
1:4；
(2) coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And in non-low order
The low-order coal raw material is continuously added on coal type coal seam to continue that the low-order coal raw material is carried out making molding firm by ramming using tamping machine,
The low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer is formed, to form final moulded coal raw material；Wherein, with matter
Meter, the mass ratio of the low-order coal raw material and the coking coal that use in the present embodiment is 10:1；
(3) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1200 DEG C of coking temperature, scorch time 16 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 960Nm3/ t dry coal, the amount of the tar are 20kg/t dry coal, and the amount of the crude benzol is 4kg/t dry coal, the by-product
The amount of product coke is 67kg/t dry coal, wherein carbon content is fixed in coke greater than 86%, volatile content is less than 2%, partial size
The particle of 40mm or more accounts for 76%, and the content of CO is 20% in coking coal coal gas.
Embodiment 2
(1) house refuse is sorted, the non-combustible ingredient such as removal glass, metal retains bark, leaf, waste paper, knits
The combustible components such as object, it is spare；
(2) straw, spare house refuse are crushed and are mixed to form low-order coal raw material with lignite, it is spare, wherein lignite,
The mass ratio of straw and rubbish is 3:6:1；
(3) coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And in non-low order
The low-order coal raw material is continuously added on coal type coal seam to continue that the low-order coal raw material is carried out making molding firm by ramming using tamping machine,
The low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer is formed, to form final moulded coal raw material；Wherein, with matter
Meter, the mass ratio of the low-order coal raw material and the coking coal that use in the present embodiment is 7:3；
(4) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1400 DEG C of coking temperature, scorch time 17 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 790Nm3/ t dry coal, the amount of the tar are 30kg/t dry coal, and the amount of the crude benzol is 9kg/t dry coal, the by-product
The amount of product coke is 222kg/t dry coal, wherein carbon content is fixed in coke greater than 86%, volatile content is less than 2%, partial size
The particle of 40mm or more accounts for 76%, and the content of CO is 20% in coking coal coal gas.
Embodiment 3
(1) house refuse is sorted, the non-combustible ingredient such as removal glass, metal retains bark, leaf, waste paper, knits
The combustible components such as object, it is spare；
(2) straw, spare house refuse, dewatered sludge are crushed and is mixed to form low-order coal raw material with ub-bituminous coal, it is standby
With wherein the mass ratio of ub-bituminous coal, straw, rubbish and dewatered sludge is 4:3:1:2；
(3) coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And in non-low order
The low-order coal raw material is continuously added on coal type coal seam to continue that the low-order coal raw material is carried out making molding firm by ramming using tamping machine,
The low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer is formed, to form final moulded coal raw material；Wherein, with matter
Meter, the mass ratio of the low-order coal raw material and the coking coal that use in the present embodiment is 8:3；
(4) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1300 DEG C of coking temperature, scorch time 18 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 700Nm3/ t dry coal, the amount of the tar are 23kg/t dry coal, and the amount of the crude benzol is 6kg/t dry coal, the by-product
The amount of product coke is 202kg/t dry coal, wherein carbon content is fixed in coke greater than 86%, volatile content is less than 2%, partial size
The particle of 40mm or more accounts for 76%, and the content of CO is 20% in coking coal coal gas.
Embodiment 4
(1) house refuse is sorted, the non-combustible ingredient such as removal glass, metal retains bark, leaf, waste paper, knits
The combustible components such as object, it is spare；
(2) straw, spare house refuse, dewatered sludge are crushed and is mixed to form low-order coal raw material with lignite, it is spare,
Wherein the mass ratio of lignite, straw, rubbish and dewatered sludge is 5:1:1:3；
(2) coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And in non-low order
The low-order coal raw material is continuously added on coal type coal seam to continue that the low-order coal raw material is carried out making molding firm by ramming using tamping machine,
The low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer is formed, to form final moulded coal raw material；Wherein, with matter
Meter, the mass ratio of the low-order coal raw material and the coking coal that use in the present embodiment is 9:2；
(3) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1100 DEG C of coking temperature, scorch time 20 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 830Nm3/ t dry coal, the amount of the tar are 50kg/t dry coal, and the amount of the crude benzol is 14.3kg/t dry coal, the pair
The amount of product coke is 135kg/t dry coal, wherein carbon content is fixed in coke greater than 86%, volatile content is less than 2%, grain
The particle of diameter 40mm or more accounts for 76%, and the content of CO is 20% in coking coal coal gas.
Embodiment 5
(1) sludge of straw, desiccation is crushed and is mixed to form low-order coal raw material with lignite, spare, wherein lignite, straw
Mass ratio with dewatered sludge is 6:2:2；
(2) 1/3 coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And non-
The low-order coal raw material is continuously added on low-order coal moulded coal layer to continue to make the low-order coal raw material firm by ramming using tamping machine
Molding forms the low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer, to form final moulded coal raw material；Its
In, in mass, the mass ratio of the low-order coal raw material and 1/3 coking coal that use in the present embodiment is 6:5；
(3) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1000 DEG C of coking temperature, scorch time 22 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 730Nm3/ t dry coal, the amount of the tar are 50kg/t dry coal, and the amount of the crude benzol is 13kg/t dry coal, the by-product
The amount of product coke is 336kg/t dry coal, wherein carbon content is fixed in coke greater than 86%, volatile content is less than 2%, partial size
The particle of 40mm or more accounts for 76%, and the content of CO is 20% in coking coal coal gas.
Embodiment 6
(1) house refuse is sorted, the non-combustible ingredient such as removal glass, metal retains bark, leaf, waste paper, knits
The combustible components such as object, it is spare；
(2) straw, spare house refuse, dewatered sludge are crushed and is mixed to form low-order coal raw material with ub-bituminous coal, it is standby
With wherein the mass ratio of ub-bituminous coal, straw, rubbish and dewatered sludge is 7:1:1:1；
(3) 1/3 coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And non-
The low-order coal raw material is continuously added on low-order coal moulded coal layer to continue to make the low-order coal raw material firm by ramming using tamping machine
Molding forms the low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer, to form final moulded coal raw material；Its
In, in mass, the mass ratio of the low-order coal raw material and 1/3 coking coal that use in the present embodiment is 7:4；
(4) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1250 DEG C of coking temperature, scorch time 24 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 595Nm3/ t dry coal, the amount of the tar are 35kg/t dry coal, and the amount of the crude benzol is 8kg/t dry coal, the by-product
The amount of product coke is 269kg/t dry coal, wherein carbon content is fixed in coke greater than 86%, volatile content is less than 2%, partial size
The particle of 40mm or more accounts for 76%, and the content of CO is 20% in coking coal coal gas.
Embodiment 7
(1) sludge of straw, desiccation is crushed and is mixed to form low-order coal raw material with lignite, spare, wherein lignite, straw
Mass ratio with dewatered sludge is 8:1:1；
(2) 1/3 coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And non-
The low-order coal raw material is continuously added on low-order coal moulded coal layer to continue to make the low-order coal raw material firm by ramming using tamping machine
Molding forms the low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer, to form final moulded coal raw material；Its
In, in mass, the mass ratio of the low-order coal raw material and 1/3 coking coal that use in the present embodiment is 9:1；
(3) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1300 DEG C of coking temperature, scorch time 19 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 850Nm3/ t dry coal, the amount of the tar are 70kg/t dry coal, and the amount of the crude benzol is 20kg/t dry coal, the by-product
The amount of product coke is 74kg/t dry coal, wherein carbon content is fixed in coke greater than 86%, volatile content is less than 2%, partial size
The particle of 40mm or more accounts for 76%, and the content of CO is 20% in coking coal coal gas.
Embodiment 8
(1) it is mixed to form low-order coal raw material by straw crushing and with lignite, auxiliary agent, spare, the wherein matter of lignite and straw
Amount is than being 1:4；The addition quality of auxiliary agent is the 5wt% of lignite quality, and the coal tar pitch that the auxiliary agent is 110 DEG C of softening point is described
Coal tar pitch is in 850 DEG C of isolation air destructive distillation weightlessness 45%, fixed carbon content 28%, C/Hratio 8.
(2) coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And in non-low order
The low-order coal raw material is continuously added on coal type coal seam to continue that the low-order coal raw material is carried out making molding firm by ramming using tamping machine,
The low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer is formed, to form final moulded coal raw material；Wherein, with matter
Meter, the mass ratio of the low-order coal raw material and the coking coal that use in the present embodiment is 10:1；
(3) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1200 DEG C of coking temperature, scorch time 16 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 980Nm3/ t dry coal, the amount of the tar are 21kg/t dry coal, and the amount of the crude benzol is 4.6kg/t dry coal, the pair
The amount of product coke is 67kg/t dry coal, wherein carbon content is fixed in coke greater than 86%, volatile content is less than 2%, partial size
The particle of 40mm or more accounts for 78%, and the content of CO is 20% in coking coal coal gas.
Embodiment 9
(1) house refuse is sorted, the non-combustible ingredient such as removal glass, metal retains bark, leaf, waste paper, knits
The combustible components such as object, it is spare；
(2) straw, spare house refuse are crushed and is mixed to form low-order coal raw material with lignite, auxiliary agent, it is spare, wherein
The mass ratio of lignite, straw and rubbish is 3:6:1；The addition quality of auxiliary agent is the 10wt% of lignite quality, and the auxiliary agent is soft
Change the asphalt of 120 DEG C of point, the asphalt is in 850 DEG C of isolation air destructive distillation weightlessness 30%, fixed carbon content 27%, carbon
Hydrogen ratio is 11.
(3) coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And in non-low order
The low-order coal raw material is continuously added on coal type coal seam to continue that the low-order coal raw material is carried out making molding firm by ramming using tamping machine,
The low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer is formed, to form final moulded coal raw material；Wherein, with matter
Meter, the mass ratio of the low-order coal raw material and the coking coal that use in the present embodiment is 7:3；
(4) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1400 DEG C of coking temperature, scorch time 17 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 810Nm3/ t dry coal, the amount of the tar are 31.5kg/t dry coal, and the amount of the crude benzol is 11.4kg/t dry coal, described
The amount of byproduct coke is 222kg/t dry coal, wherein carbon content is fixed in coke greater than 86%, volatile content less than 2%,
The particle of partial size 40mm or more accounts for 78%, and the content of CO is 20% in coking coal coal gas.
Embodiment 10
(1) house refuse is sorted, the non-combustible ingredient such as removal glass, metal retains bark, leaf, waste paper, knits
The combustible components such as object, it is spare；
(2) straw, spare house refuse, dewatered sludge are crushed and are mixed to form low-order coal raw material with lignite, auxiliary agent,
Spare, wherein the mass ratio of lignite, straw, rubbish and dewatered sludge is 5:1:1:3；The addition quality of auxiliary agent is lignite quality
20wt%, the hard pitch that the auxiliary agent is 140 DEG C of softening point, the hard pitch are weightless in 850 DEG C of isolation air destructive distillation
45%, fixed carbon content 29%, C/Hratio 9.
(3) coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And in non-low order
The low-order coal raw material is continuously added on coal type coal seam to continue that the low-order coal raw material is carried out making molding firm by ramming using tamping machine,
The low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer is formed, to form final moulded coal raw material；Wherein, with matter
Meter, the mass ratio of the low-order coal raw material and the coking coal that use in the present embodiment is 9:2；
(3) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1100 DEG C of coking temperature, scorch time 20 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 840Nm3/ t dry coal, the amount of the tar are 50.2kg/t dry coal, and the amount of the crude benzol is 14kg/t dry coal, the pair
The amount of product coke is 135kg/t dry coal, wherein carbon content is fixed in coke greater than 86%, volatile content is less than 2%, grain
The particle of diameter 40mm or more accounts for 78%, and the content of CO is 20% in coking coal coal gas.
Embodiment 11
(1) house refuse is sorted, the non-combustible ingredient such as removal glass, metal retains bark, leaf, waste paper, knits
The combustible components such as object, it is spare；
(2) straw, spare house refuse, dewatered sludge are crushed and is mixed to form low-order coal original with ub-bituminous coal, auxiliary agent
Material, spare, wherein the mass ratio of ub-bituminous coal, straw, rubbish and dewatered sludge is 7:1:1:1；The addition quality of auxiliary agent is lignite
The 30wt% of quality, the hard pitch that the auxiliary agent is 150 DEG C of softening point, the hard pitch is in 850 DEG C of isolation air destructive distillation
Weightlessness 40%, fixed carbon content 29%, C/Hratio 10.
(3) 1/3 coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And non-
The low-order coal raw material is continuously added on low-order coal moulded coal layer to continue to make the low-order coal raw material firm by ramming using tamping machine
Molding forms the low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer, to form final moulded coal raw material；Its
In, in mass, the mass ratio of the low-order coal raw material and 1/3 coking coal that use in the present embodiment is 7:4；
(4) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1250 DEG C of coking temperature, scorch time 24 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 610Nm3/ t dry coal, the amount of the tar are 37.1kg/t dry coal, and the amount of the crude benzol is 11.3kg/t dry coal, described
The amount of byproduct coke is 269kg/t dry coal, wherein carbon content is fixed in coke greater than 86%, volatile content less than 2%,
The particle of partial size 40mm or more accounts for 78%, and the content of CO is 20% in coking coal coal gas.
Embodiment 12
(1) it is mixed to form low-order coal raw material by straw crushing and with lignite, spare, wherein the mass ratio of lignite and straw is
1:4；
(2) coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And in non-low order
The low-order coal raw material is continuously added on coal type coal seam to continue that the low-order coal raw material is carried out making molding firm by ramming using tamping machine,
The low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer is formed, to form final moulded coal raw material；Wherein, with matter
Meter, the mass ratio of the low-order coal raw material and the coking coal that use in the present embodiment is 10:1；
(3) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1200 DEG C of coking temperature, scorch time 16 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke, wherein starting after coking carries out 10h
CO is passed through into carbonization chamber2Until pyrogenetic reaction terminates, CO2Intake be 380Nm3/ t dry coal；
After technique, raw gas, tar is separated using common process, and further separate crude benzol from tar, obtained
The raw gas amount be 1000Nm3/ t dry coal, the amount of the tar are 20kg/t dry coal, and the amount of the crude benzol is 4kg/t
Dry coal, the amount of the byproduct coke are 67kg/t dry coal, wherein carbon content fixed in coke is greater than 76%, volatile content
Less than 2%, the particle of partial size 40mm or more accounts for 72%, and the content of CO is 28% in coking coal coal gas.
Embodiment 13
(1) house refuse is sorted, the non-combustible ingredient such as removal glass, metal retains bark, leaf, waste paper, knits
The combustible components such as object, it is spare；
(2) straw, spare house refuse, dewatered sludge are crushed and is mixed to form low-order coal raw material with lignite, it is spare,
Wherein the mass ratio of lignite, straw, rubbish and dewatered sludge is 5:1:1:3；
(2) coking coal of crushing is carried out making molding firm by ramming using tamping machine, forms non-low-order coal moulded coal layer；And in non-low order
The low-order coal raw material is continuously added on coal type coal seam to continue that the low-order coal raw material is carried out making molding firm by ramming using tamping machine,
The low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer is formed, to form final moulded coal raw material；Wherein, with matter
Meter, the mass ratio of the low-order coal raw material and the coking coal that use in the present embodiment is 9:2；
(3) moulded coal raw material is pushed into coke oven and carries out coking, controlled 1100 DEG C of coking temperature, scorch time 20 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；Wherein after coking carries out 16h, start
CO is passed through into carbonization chamber2Until pyrogenetic reaction terminates, CO2Intake be 480Nm3/ t dry coal；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 850Nm3/ t dry coal, the amount of the tar are 50kg/t dry coal, and the amount of the crude benzol is 14.3kg/t dry coal, the pair
The amount of product coke is 135kg/t dry coal, wherein carbon content is fixed in coke greater than 86%, volatile content is less than 2%, grain
The particle of diameter 40mm or more accounts for 72%, and the content of CO is 29% in coking coal coal gas.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (8)
1. a kind of coking process of the moulded coal including biomass and low-order coal, which is characterized in that
(1) the low-order coal moulded coal raw material containing biomass is formed；
(2) coking is carried out to the low-order coal moulded coal raw material containing biomass of the step (1), control coking temperature is 1000-
1400 DEG C, scorch time is not less than 15h, collects the raw gas of spilling, the mixture of tar and crude benzol, while obtaining byproduct coke
Charcoal；
Wherein, the moulded coal including biomass and low-order coal include by one of scala media coal, high-order coal or middle high-order coal or
The non-low-order coal moulded coal layer of several formation, and the low-order coal moulded coal layer being set on the non-low-order coal moulded coal layer, the low order
Coal type coal seam includes low-order coal and biomass, and in mass, the additional amount of the low-order coal is the low-order coal moulded coal layer quality
20-80wt%；
It further include auxiliary agent in the low-order coal moulded coal layer, the auxiliary agent is in 850 DEG C of isolation air destructive distillation weightlessness less than 50%
Organic binder, the organic binder are asphalitine, and the asphalitine is the coal tar pitch or petroleum that softening point is not less than 140 DEG C
Pitch；
The additional amount of the auxiliary agent is the 5-30wt% of the low order coal quality.
2. the coking process of the moulded coal according to claim 1 including biomass and low-order coal, which is characterized in that
The coking process is passed through carbon dioxide and/or water in coking latter stage.
3. the coking process of the moulded coal according to claim 1 or 2 including biomass and low-order coal, which is characterized in that institute
Stating low-order coal moulded coal layer further includes house refuse and/or sludge.
4. the coking process of the moulded coal according to claim 3 including biomass and low-order coal, which is characterized in that the life
Substance is lignocellulose biomass.
5. the coking process of the moulded coal according to claim 4 including biomass and low-order coal, which is characterized in that the wood
Matter cellulose biomass is straw, trees or agriculture and forestry organic waste material.
6. the coking process of the moulded coal according to claim 5 including biomass and low-order coal, which is characterized in that the drip
Green matter is hard pitch, and the fixation carbon content of the hard pitch is 25% or more, C/Hratio 8-11.
7. according to the coking process of any moulded coal including biomass and low-order coal of claim 4-6, which is characterized in that
Before forming the non-low-order coal moulded coal layer, further include the steps that carrying out dehydration and drying to sludge.
8. the coking process of the moulded coal according to claim 7 including biomass and low-order coal, which is characterized in that formed
Before the non-low-order coal moulded coal layer, further include the steps that sorting house refuse to select and select combustible component.
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