CN104263395B - A kind of coking process containing low-order coal - Google Patents
A kind of coking process containing low-order coal Download PDFInfo
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- CN104263395B CN104263395B CN201410471984.1A CN201410471984A CN104263395B CN 104263395 B CN104263395 B CN 104263395B CN 201410471984 A CN201410471984 A CN 201410471984A CN 104263395 B CN104263395 B CN 104263395B
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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
- 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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Abstract
The invention discloses a kind of coking process containing low-order coal, low-order coal is crushed and is mixed to form low-order coal raw material with auxiliary agent by (1)；(2) one or more of the scala media coal of crushing, high-order coal or middle high-order coal are press-formed first, form non-low-order coal moulded coal layer；And the low-order coal raw material is added on non-low-order coal moulded coal layer and continues to be press-formed the low-order coal raw material, the low-order coal moulded coal layer being located on the non-low-order coal moulded coal layer is formed, final moulded coal raw material is formed；(3) the moulded coal raw material is pushed into coke oven and carries out coking；The wherein described auxiliary agent is the organic binder for completely cutting off air destructive distillation weightlessness at 850 DEG C and being less than 50%.Coking process containing low-order coal in the present invention solves the problems, such as that existing tamping coke furnace availability is low, coking industry excess capacity, also solves the problem for keeping its application limited due to no large-scale industrialization equipment for low-order coal.
Description
Technical field
The present invention relates to a kind of coking process of low-order coal, and in particular to a kind of to carry out low order coal tar using existing stove of making firm by ramming
The technique of change belongs to low order coking of coal transformation technology field.
Background technology
Coal is the main energy sources in China, and 70% is accounted for about in primary energy structure.During very long geological changes,
The formation of coal is acted on by many factors, causes categories of coal various.According to the difference of structure and composition, coal is divided into brown
3 major class of coal, bituminous coal and anthracite, metabituminous coal is divided into as lower-grade metamorphic bituminous and mesometamorphism bituminous coal, lower-grade metamorphic bituminous to be called time cigarette
Coal is referred to as " low-order coal " together with lignite.Low-order coal is the product at incoalation initial stage, with phosphorus content is low, moisture is high, easy
The characteristics of dusting, easy spontaneous combustion, fugitive constituent height, immersion intensity difference, anti-dropping intensity difference, these characteristics are limited to the direct of low-order coal
It develops and uses, but according to statistics, China's low order coal reserves accounts for the whole nation and has verified 55% of coal reserves or more, up to 561,200,000,000 tons, this nothing
It doubts and causes a kind of waste of resource.And with domestic energy demand increasingly increase and high-quality coal stock number falls sharply,
The conversion comprehensive utilization of low-order coal becomes people's increasingly focus of attention.
The process for upgrading of low-order coal is one of the means of low-order coal trans-utilization, is in isolation air or non-oxide gas
Low-order coal is heated to low temperature upgrading in 200-800 DEG C of progress under the conditions of atmosphere, finally obtains the processing side of tar, coal gas and semicoke
Method.But current low-order coal upgrading technology is in experimental study and engineering original application stage, and there is no keep it extensive
The equipment of industrial applications thus limits the utilization of low-order coal.
Tamping coke furnace be coal coking process in the enlarged equipment that uses, floor space is wide, and investment capital cost is big,
The coking process that coking is carried out using tamping coke furnace is primarily referred to as high-temperature coking to obtain coke and recycling chemical products, coke
Product is mainly that metallurgical coke or chemical industry are burnt, due to the coal original for industrially using to the quality requirements of metallurgical coke or chemical industry coke, it
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 be used 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, on the one hand, makes
The price of coke product drastically reduces, the rise of cost of material, the decline of product price so that China's major part coking industry passes through
Ji benefit seriously glides, and on the other hand, the reduction of coke demand forces coke-oven plant to reduce coke output, but due to stamp-charging coke
Stove is once out of service to be scrapped, therefore in order to protect the tamping coke furnace equipment for furnishing a huge amount of money for invest to build, is had in minimum journey
The operation that coke oven is maintained in degree, not only reduces the availability of tamping coke furnace, also causes the excess capacity of coking industry.To sum up institute
The coking industry how saved and be on the verge of negative growth is stated, the availability of tamping coke furnace is improved, solves asking for coking industry excess capacity
Topic has become coking industry letter major issue to be solved.
It is well known that its purpose of traditional coking process primarily to obtain coke, especially metallurgical coke, first to
It solves the problems, such as coking industry negative growth, feed coal price needed for coking industry is greatly reduced or improves coke price or two
It is selectable approach that person has both simultaneously, currently, coke price cannot achieve improvements in a short time, then feed coal can only be reduced
Price, but the requirement due to Coke Industry for coke quality have then been traced in the requirement to feed coal, are had to tight
Lattice limit the index of its volatile matter and ash content.Low-order coal is the coal that price is more cheap in feed coal, if it is possible to effectively profit
With low-order coal, extricate oneself from a plight then will be helpful to coking industry.But low-order coal has volatile matter height, easy dusting, ash content high
Feature, and the index of volatile matter and ash content that coking proposes feed coal is very stringent, this is just doomed can not by using low-order coal
Solve the problems, such as coking industry feed coal price.
Invention content
For solve the problems, such as in the prior art low-order coal cannot achieve large-scale application and existing coking industry excess capacity,
The low problem of tamping coke furnace availability, to provide a kind of coking process containing low-order coal.
For this purpose, the technical solution that the present invention takes is,
A kind of coking process containing low-order coal, including,
(1) low-order coal is crushed and is mixed to form low-order coal raw material with auxiliary agent, it is spare；
(2) one or more of the scala media coal of crushing, high-order coal or middle high-order coal are press-formed first, are formed
Non- low-order coal moulded coal layer；And the low-order coal raw material is added on non-low-order coal moulded coal layer and continues to carry out the low-order coal raw material
Extrusion forming forms the low-order coal moulded coal layer being located on the non-low-order coal moulded coal layer, to form final moulded coal raw material；
(3) the moulded coal raw material is pushed into coke oven and carries out coking, control coking temperature is more than 800 DEG C, and scorch time is not
Less than 15 hours, the raw gas of spilling, the mixture of tar, crude benzol are collected, while obtaining byproduct coke；
The wherein described auxiliary agent is the organic binder for completely cutting off air destructive distillation weightlessness at 850 DEG C and being less than 50%.
In the above-mentioned coking process containing low-order coal, the organic binder is the asphalitine that softening point is more than 100 DEG C.
In the above-mentioned coking process containing low-order coal, the auxiliary agent is coal asphalt or petroleum asphalt, and softening point is not small
In 120 DEG C.
In the above-mentioned coking process containing low-order coal, the softening point of the pitch is not less than 140 DEG C.
In the above-mentioned coking process containing low-order coal, the pitch is hard pitch, in mass, the hard pitch
Fixation carbon content 25% or more, C/Hratio 8-11.
In the above-mentioned coking process containing low-order coal, in mass, the addition of the auxiliary agent is the low order coal quality
The 5-40wt% of amount.
In the above-mentioned coking process containing low-order coal, in mass, the addition of the auxiliary agent is the low order coal quality
The 10-30wt% of amount.
In the above-mentioned coking process containing low-order coal, in mass, the addition of the low-order coal is that the moulded coal is former
Expect the 50-80wt% of quality.
In the above-mentioned coking process containing low-order coal, in mass, the addition of the low-order coal is that the moulded coal is former
Expect the 50-70wt% of quality.
In the above-mentioned coking process containing low-order coal, the G values of the low-order coal are less than 50, and volatile content is more than
40%.
In the above-mentioned coking process containing low-order coal, 900-1200 DEG C of coking temperature in the step (2).
The above-mentioned coking process containing low-order coal carries out in tamping coke furnace, the moulded coal raw material in tamping machine into
Row makes molding firm by ramming.
Compared with prior art, the invention has the advantages that,
(1) coking process containing low-order coal in the present invention, not only solves that existing tamping coke furnace availability is low, coking row
The problem of industry excess capacity, also solves for low-order coal since no large-scale industrialization equipment makes its application is limited to ask
Topic.
It is added in feed coal in the application and completely cuts off asphalitine of the air destructive distillation weightlessness less than 50% at 850 DEG C as bonding
On the one hand agent is conducive to low-order coal and is molded in tamping machine, coking is carried out to be pushed into tamping coke furnace, another
Its solid product is not pulverized easily after the completion of aspect low order coking of coal, is easy to the coke pushing of tamping coke furnace, it is most important that the auxiliary agent
After being mixed with low-order coal, the active ingredient wherein in auxiliary agent contributes to the drop of the high molecular polymer in low-order coal at high temperature
High molecular fracture in solution and low-order coal makes oil gas total amount increase production 10% or more to improve the yield of oil gas in technical process.
Non- low-order coal moulded coal layer, which is penetrated into, under the liquid that low-order coal moulded coal layer generates in high temperature grading process simultaneously helps to improve low order
The quality for the coke that coal type coal seam generates.And the main component in raw gas is hydrogen and methane, currently, the valence of hydrogen, methane
Lattice are far above the price of coke, and the increase of yield improves the economic benefit of enterprise, meanwhile, compared in the prior art in,
High-order coal be raw material coking process, the raw material using low-order coal as coking process, can largely reduce raw material at
This, at the same it is significant to the development and utilization of low-order coal.
(2) coking process containing low-order coal in the present invention, the auxiliary agent are that coal or petroleum raw material react the drip to be formed
Blueness, and the softening point of the pitch is not less than 120 DEG C, improves the product of its solid product-coke after the completion of low order coking of coal
Matter, in coke volatile matter can be used for generating electricity no more than the 3-4% by-product cokes made, gas making and other chemical industry purposes.
Specific implementation mode
The coking process containing low-order coal of the application suitable for all low-order coals, scala media coal, high-order coal or high-order
Coal raw material, 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
For coking coal.
Wherein, the quality of quality × 90%+ auxiliary agents of the non-low-order coals of quality × 75%+ of quality=low-order coal of dry coal,
What " kg/t dry coals " referred to dry coal per ton obtains how many kilograms of product.
Embodiment 1
(1) ub-bituminous coal is crushed and is mixed to form low-order coal raw material with auxiliary agent, it is spare；
(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 addition of auxiliary agent is the 40wt% of ub-bituminous coal quality, and the addition of the ub-bituminous coal is the moulded coal raw material
65wt%, the G values of the ub-bituminous coal are 45, and volatile content 65%, the auxiliary agent is the asphalitine of 105 DEG C of softening point,
The asphalitine completely cuts off air destructive distillation weightlessness 45% at 850 DEG C；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, 850 DEG C of control upgrading temperature, the 16 hours upgrading time collects
The raw gas of spilling, the mixture of tar, crude benzol, while obtaining byproduct coke；
Using common process separation raw gas, tar, and crude benzol is further detached from tar, the obtained raw gas
Amount be 450Nm3The amount of/t dry coals, the tar is 54kg/t dry coals, and the amount of the byproduct coke is 570kg/t dry coals,
The amount of the crude benzol is 16kg/t dry coals.The coke includes the low-order coal moulded coal layer production by being layered formation after coke oven release coke
The non-low order coal coke that raw low order coal coke and non-low order coal seam generate, in mass, solid carbon in the low order coal coke
Content is not less than 60%, and volatile matter content is not more than 6%, and grain size is coke in the particle gross mass of 40mm or more after coke screening
The 20% of gross mass, grain size are the 60% of coke gross mass in the particle gross mass of 25mm or more；What the non-low-order coal generated
In non-low order coal coke solids carbon content be not less than 82%, volatile matter content be not more than 5%, coke screening after grain size 40mm with
On particle gross mass be the 81% of coke gross mass, grain size is coke gross mass in the particle gross mass of 25mm or more
92%.
Embodiment 2
(1) ub-bituminous coal is crushed and is mixed to form low-order coal raw material with auxiliary agent, it is spare；
(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 addition quality of auxiliary agent is the 35wt% of ub-bituminous coal quality, and the addition of the ub-bituminous coal is that the moulded coal is former
Expect the 50wt% of quality, the G values of the ub-bituminous coal are 40, and volatile content 70%, the auxiliary agent is the drip of 115 DEG C of softening point
Green matter, the asphalitine completely cut off air destructive distillation weightlessness 40% at 850 DEG C；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, 900 DEG C of control upgrading temperature, the 15.5 hours upgrading time receives
Collect the mixture of the raw gas, tar, crude benzol that overflow, while obtaining byproduct coke；
Using common process separation raw gas, tar, and crude benzol is further detached from tar, the obtained raw gas
Amount be 500Nm3The amount of/t dry coals, the tar is 54kg/t dry coals, and the amount of the byproduct coke is 505kg/t dry coals,
The amount of the crude benzol is 16kg/t dry coals.The coke includes the low-order coal moulded coal layer production by being layered formation after coke oven release coke
The non-low order coal coke that raw low order coal coke and non-low order coal seam generate, in mass, solid carbon in the low order coal coke
Content is not less than 58%, and volatile matter content is not more than 5%, and grain size is coke in the particle gross mass of 40mm or more after coke screening
The 15% of gross mass, grain size are the 55% of coke gross mass in the particle gross mass of 25mm or more, what the non-low-order coal generated
In non-low order coal coke solids carbon content be not less than 82%, volatile matter content be not more than 5%, coke screening after grain size 40mm with
On particle gross mass be the 81% of coke gross mass, grain size is coke gross mass in the particle gross mass of 25mm or more
92%.
Embodiment 3
(1) ub-bituminous coal is crushed and is mixed to form low-order coal raw material with auxiliary agent, it is spare；
(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 addition quality of auxiliary agent is the 30wt% of ub-bituminous coal quality, and the addition of the ub-bituminous coal is that the moulded coal is former
Expect the 70wt% of quality, the G values of the ub-bituminous coal are 35, and volatile content 45%, the auxiliary agent is the drip of 120 DEG C of softening point
Green matter, the asphalitine completely cut off air destructive distillation weightlessness 42% at 850 DEG C；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, 950 DEG C of control upgrading temperature, the 17 hours upgrading time collects
The raw gas of spilling, the mixture of tar, crude benzol, while obtaining byproduct coke；
Using common process separation raw gas, tar, and crude benzol is further detached from tar, the obtained raw gas
Amount be 500Nm3The amount of/t dry coals, the tar is 54kg/t dry coals, and the amount of the byproduct coke is 505kg/t dry coals,
The amount of the crude benzol is 16kg/t dry coals.The coke includes the low-order coal moulded coal layer production by being layered formation after coke oven release coke
The non-low order coal coke that raw low order coal coke and non-low order coal seam generate, in mass, solid carbon in the low order coal coke
Content is not less than 72%, and volatile matter content is not more than 4%, and grain size is coke in the particle gross mass of 40mm or more after coke screening
The 15% of gross mass, grain size are the 55% of coke gross mass in the particle gross mass of 25mm or more, what the non-low-order coal generated
In non-low order coal coke solids carbon content be not less than 82%, volatile matter content be not more than 5%, coke screening after grain size 40mm with
On particle gross mass be the 81% of coke gross mass, grain size is coke gross mass in the particle gross mass of 25mm or more
92%.
Embodiment 4
(1) ub-bituminous coal is crushed and is mixed to form low-order coal raw material with auxiliary agent, it is spare；
(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 addition quality of auxiliary agent is the 25wt% of ub-bituminous coal quality, and the addition of the ub-bituminous coal is that the moulded coal is former
Expect that the G values of ub-bituminous coal described in the 75wt% of quality are 30, volatile content 65%, the auxiliary agent is the drip of 130 DEG C of softening point
Green matter, the asphalitine completely cut off air destructive distillation weightlessness 40% at 850 DEG C；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, 1000 DEG C of control upgrading temperature, 16.5 hours upgrading time,
The mixture of the raw gas, tar, crude benzol that overflow is collected, while obtaining byproduct coke；
Using common process separation raw gas, tar, and crude benzol is further detached from tar, the obtained raw gas
Amount be 680Nm3The amount of/t dry coals, the tar is 93kg/t dry coals, and the amount of the byproduct coke is 390kg/t dry coals,
The amount of the crude benzol is 27kg/t dry coals.The coke includes the low-order coal moulded coal layer production by being layered formation after coke oven release coke
The non-low order coal coke that raw low order coal coke and non-low order coal seam generate, in mass, solid carbon in the low order coal coke
Content is not less than 72%, and volatile matter content is not more than 4%, and grain size is coke in the particle gross mass of 40mm or more after coke screening
The 15% of gross mass, grain size are the 55% of coke gross mass in the particle gross mass of 25mm or more, what the non-low-order coal generated
In non-low order coal coke solids carbon content be not less than 82%, volatile matter content be not more than 5%, coke screening after grain size 40mm with
On particle gross mass be the 81% of coke gross mass, grain size is coke gross mass in the particle gross mass of 25mm or more
92%.
Embodiment 5
(1) ub-bituminous coal is crushed and is mixed to form low-order coal raw material with auxiliary agent, it is spare；
(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 addition quality of auxiliary agent is the 20wt% of ub-bituminous coal quality, and the addition of the ub-bituminous coal is that the moulded coal is former
Expect the 80wt% of quality, the G values of the ub-bituminous coal are 20, and volatile content 60%, the auxiliary agent is the drip of 140 DEG C of softening point
Green matter, the asphalitine completely cut off air destructive distillation weightlessness 35% at 850 DEG C；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, 1100 DEG C of control upgrading temperature, the 18 hours upgrading time receives
Collect the mixture of the raw gas, tar, crude benzol that overflow, while obtaining byproduct coke；
Using common process separation raw gas, tar, and crude benzol is further detached from tar, the obtained raw gas
Amount be 680Nm3The amount of/t dry coals, the tar is 90kg/t dry coals, and the amount of the byproduct coke is 407kg/t dry coals,
The amount of the crude benzol is 27kg/t dry coals.The coke includes the low-order coal moulded coal layer production by being layered formation after coke oven release coke
The non-low order coal coke that raw low order coal coke and non-low order coal seam generate, in mass, solid carbon in the low order coal coke
Content is not less than 64%, and volatile matter content is not more than 4%, and grain size is coke in the particle gross mass of 40mm or more after coke screening
The 15% of gross mass, grain size are the 55% of coke gross mass in the particle gross mass of 25mm or more, what the non-low-order coal generated
In non-low order coal coke solids carbon content be not less than 82%, volatile matter content be not more than 5%, coke screening after grain size 40mm with
On particle gross mass be the 81% of coke gross mass, grain size is coke gross mass in the particle gross mass of 25mm or more
92%.
Embodiment 6
(1) ub-bituminous coal is crushed and is mixed to form low-order coal raw material with auxiliary agent, it is spare；
(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 addition quality of auxiliary agent is the 15wt% of ub-bituminous coal quality, and the addition of the ub-bituminous coal is that the moulded coal is former
Expect the 55wt% of quality, the G values of the ub-bituminous coal are 15, and volatile content 55%, the auxiliary agent is the height of 150 DEG C of softening point
Warm pitch, the hard pitch completely cut off air destructive distillation weightlessness at 850 DEG C and are less than 40%, fix carbon content 28%, C/Hratio 8；
(3) molding feed coal is pushed into coke oven and carries out upgrading, 950 DEG C of control upgrading temperature, 20 hours upgrading time,
The mixture of the raw gas, tar, crude benzol that overflow is collected, while obtaining byproduct coke；
Using common process separation raw gas, tar, and crude benzol is further detached from tar, the obtained raw gas
Amount be 570Nm3The amount of/t dry coals, the tar is 62kg/t dry coals, and the amount of the byproduct coke is 492kg/t dry coals,
The amount of the crude benzol is 18kg/t dry coals.The coke includes the low-order coal moulded coal layer production by being layered formation after coke oven release coke
The non-low order coal coke that raw low order coal coke and non-low order coal seam generate, in mass, solid carbon in the low order coal coke
Content is not less than 64%, and volatile matter content is not more than 5%, and grain size is coke in the particle gross mass of 40mm or more after coke screening
The 15% of gross mass, grain size are the 55% of coke gross mass in the particle gross mass of 25mm or more, what the non-low-order coal generated
In non-low order coal coke solids carbon content be not less than 82%, volatile matter content be not more than 5%, coke screening after grain size 40mm with
On particle gross mass be the 81% of coke gross mass, grain size is coke gross mass in the particle gross mass of 25mm or more
92%.
Embodiment 7
(1) ub-bituminous coal is crushed and is mixed to form low-order coal raw material with auxiliary agent, it is spare；
(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 addition quality of auxiliary agent is the 10wt% of ub-bituminous coal quality, and the addition of the ub-bituminous coal is that the moulded coal is former
Expect the 60wt% of quality, the G values of the ub-bituminous coal are 20, and volatile content 50%, the auxiliary agent is the height of 170 DEG C of softening point
Warm pitch, the hard pitch completely cut off air destructive distillation weightlessness 42%, fixed carbon content 30%, C/Hratio 11 at 850 DEG C；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, 1200 DEG C of control upgrading temperature, the 24 hours upgrading time receives
Collect the mixture of the raw gas, tar, crude benzol that overflow, while obtaining byproduct coke；
Using common process separation raw gas, tar, and crude benzol is further detached from tar, the obtained raw gas
Amount be 550_Nm3The amount of/t dry coals, the tar is 54kg/t dry coals, the amount 600kg/t dry coals of the byproduct coke, institute
The amount for stating crude benzol is 16kg/t dry coals.The coke includes being generated by the low-order coal moulded coal layer for being layered formation after coke oven release coke
Low order coal coke and non-low order coal seam generate non-low order coal coke, in mass, solid carbon contains in the low order coal coke
Amount is not less than 55%, and volatile matter content is not more than 3%, and grain size is that coke is total in the particle gross mass of 40mm or more after coke screening
The 5% of quality, grain size are the 50% of coke gross mass in the particle gross mass of 25mm or more, and the non-low-order coal generates non-low
Solids carbon content is not less than 82% in rank coal coke, and volatile matter content is not more than 5%, and grain size is 40mm's or more after coke screening
Particle gross mass is the 81% of coke gross mass, and grain size is the 92% of coke gross mass in the particle gross mass of 25mm or more.
Embodiment 8
(1) ub-bituminous coal is crushed and is mixed to form low-order coal raw material with auxiliary agent, it is spare；
(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 addition quality of auxiliary agent is the 5wt% of ub-bituminous coal quality, and the addition of the ub-bituminous coal is that the moulded coal is former
Expect the 50wt% of quality, the G values of the ub-bituminous coal are 15, and volatile content 45%, the auxiliary agent is the height of 190 DEG C of softening point
Warm pitch, the hard pitch completely cut off air destructive distillation weightlessness 45%, fixed carbon content 28%, C/Hratio 10 at 850 DEG C；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, 950 DEG C of control upgrading temperature, the 20 hours upgrading time collects
The raw gas of spilling, the mixture of tar, crude benzol, while obtaining byproduct coke；
Using common process separation raw gas, tar, and crude benzol is further detached from tar, the obtained raw gas
Amount be 380Nm3The amount of/t dry coals, the tar is 46kg/t dry coals, and the amount of the byproduct coke is 653kg/t dry coals,
The amount of the crude benzol is 16kg/t dry coals.The coke includes the low-order coal moulded coal layer production by being layered formation after coke oven release coke
The non-low order coal coke that raw low order coal coke and non-low order coal seam generate, in mass, solid carbon in the low order coal coke
Content is not less than 64%, and volatile matter content is not more than 4%, and grain size is coke in the particle gross mass of 40mm or more after coke screening
The 5% of gross mass, grain size are the 55% of coke gross mass in the particle gross mass of 25mm or more, and the non-low-order coal generates non-
Solids carbon content is not less than 82% in low order coal coke, and volatile matter content is not more than 5%, and grain size is in 40mm or more after coke screening
Particle gross mass be coke gross mass 81%, grain size 25mm or more particle gross mass be coke gross mass 92%.
Embodiment 9
(1) lignite is crushed and is mixed to form low-order coal raw material with auxiliary agent, it is spare；
(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 addition quality of auxiliary agent is the 10wt% of lignite quality, and the addition of the lignite is the moulded coal raw material matter
The G values of the 80wt% of amount, the lignite are 20, and volatile content 55%, the auxiliary agent is the pitch that softening point is more than 110 DEG C
Matter, the asphalitine completely cut off air destructive distillation weightlessness 45% at 850 DEG C；
(3) molding feed coal is pushed into coke oven and carries out upgrading, 850 DEG C of control upgrading temperature, 16 hours upgrading time,
The mixture of the raw gas, tar, crude benzol that overflow is collected, while obtaining byproduct coke；
Using common process separation raw gas, tar, and crude benzol is further detached from tar, the obtained raw gas
Amount be 550Nm3The amount of/t dry coals, the tar is 62kg/t dry coals, and the amount of the byproduct coke is 458kg/t dry coals,
The amount of the crude benzol is 18kg/t dry coals.The coke includes the low-order coal moulded coal layer production by being layered formation after coke oven release coke
The non-low order coal coke that raw low order coal coke and non-low order coal seam generate, in mass, solid carbon in the low order coal coke
Content is not less than 57%, and volatile matter content is not more than 6%, and grain size is coke in the particle gross mass of 40mm or more after coke screening
The 15% of gross mass, grain size are the 50% of coke gross mass in the particle gross mass of 25mm or more, what the non-low-order coal generated
In non-low order coal coke solids carbon content be not less than 82%, volatile matter content be not more than 5%, coke screening after grain size 40mm with
On particle gross mass be the 81% of coke gross mass, grain size is coke gross mass in the particle gross mass of 25mm or more
92%.
Embodiment 10
(1) lignite is crushed and is mixed to form low-order coal raw material with auxiliary agent, it is spare；
(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 addition quality of auxiliary agent is the 30wt% of lignite quality, and the addition of the lignite is the moulded coal raw material matter
The G values of the 60wt% of amount, the lignite are 20, volatile content 55%, and the auxiliary agent is that the high temperature of 150 DEG C of softening point drips
Blueness, the hard pitch completely cut off air destructive distillation weightlessness 30%, fixed carbon content 30%, C/Hratio 8 at 850 DEG C；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, 950 DEG C of control upgrading temperature, the 24 hours upgrading time collects
The raw gas of spilling, the mixture of tar, crude benzol, while obtaining byproduct coke；
Using common process separation raw gas, tar, and crude benzol is further detached from tar, the obtained raw gas
Amount be 400Nm3The amount of/t dry coals, the tar is 48kg/t dry coals, and the amount of the byproduct coke is 635kg/t dry coals,
The amount of the crude benzol is 17kg/t dry coals.The coke includes the low-order coal moulded coal layer production by being layered formation after coke oven release coke
The non-low order coal coke that raw low order coal coke and non-low order coal seam generate, in mass, solid carbon in the low order coal coke
Content is not less than 72%, and volatile matter content is not more than 4%, and grain size is coke in the particle gross mass of 40mm or more after coke screening
The 20% of gross mass, grain size are the 55% of coke gross mass in the particle gross mass of 25mm or more, what the non-low-order coal generated
In non-low order coal coke solids carbon content be not less than 82%, volatile matter content be not more than 5%, coke screening after grain size 40mm with
On particle gross mass be the 81% of coke gross mass, grain size is coke gross mass in the particle gross mass of 25mm or more
92%.
Comparative example 1
(1) 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 lignite is continuously added on low-order coal moulded coal layer with the low-order coal raw material that auxiliary agent is formed to continue using tamping machine to described low
Rank coal raw material carries out making molding firm by ramming, forms the low-order coal moulded coal layer being located above the non-low-order coal moulded coal layer, to be formed most
Whole moulded coal raw material；Wherein, the addition of the lignite is the 60wt% of the moulded coal material quality, and the G values of the lignite are
20, volatile content 55%, the auxiliary agent is the asphalitine that softening point is more than 80 DEG C, and the asphalitine completely cuts off sky at 850 DEG C
Gas destructive distillation weightlessness 60%；
(2) moulded coal raw material is pushed into coke oven and carries out upgrading, 950 DEG C of control upgrading temperature, the 24 hours upgrading time collects
The raw gas of spilling, the mixture of tar, crude benzol, while obtaining byproduct coke；
Using common process separation raw gas, tar, and crude benzol is further detached from tar, the obtained raw gas
Amount be 320Nm3The amount of/t dry coals, the tar is 44kg/t dry coals, and the amount of the byproduct coke is 870kg/t dry coals,
The amount of the crude benzol is 18kg/t dry coals.The coke includes the low-order coal moulded coal layer production by being layered formation after coke oven release coke
The non-low order coal coke that raw low order coal coke and non-low order coal seam generate, in mass, solid carbon in the low order coal coke
Content is not less than 55%, and volatile matter content is not more than 4%, and grain size is coke in the particle gross mass of 40mm or more after coke screening
The 15% of gross mass, grain size are the 55% of coke gross mass in the particle gross mass of 25mm or more, what the non-low-order coal generated
In non-low order coal coke solids carbon content be not less than 82%, volatile matter content be not more than 5%, coke screening after grain size 40mm with
On particle gross mass be the 70% of coke gross mass, grain size is coke gross mass in the particle gross mass of 25mm or more
86%.
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 (9)
1. a kind of coking process containing low-order coal, which is characterized in that
(1) low-order coal is crushed and is mixed to form low-order coal raw material with auxiliary agent, it is spare；
(2) one or more of the scala media coal of crushing, high-order coal or middle high-order coal are press-formed first, are formed non-low
Rank coal type coal seam；And the low-order coal raw material is added on non-low-order coal moulded coal layer and continues to pressurize to the low-order coal raw material
Molding forms the low-order coal moulded coal layer being located on the non-low-order coal moulded coal layer, to form final moulded coal raw material；
(3) the moulded coal raw material is pushed into coke oven and carries out coking, control coking temperature is more than 800 DEG C, and scorch time is not less than
15 hours, the raw gas of spilling, the mixture of tar, crude benzol are collected, while obtaining byproduct coke；
The wherein described auxiliary agent is the organic binder for completely cutting off air destructive distillation weightlessness at 850 DEG C and being less than 50%, the organic binder
For asphalitine, the asphalitine is coal asphalt or petroleum asphalt, and the softening point of the pitch is not less than 120 DEG C；
The addition of the low-order coal is the 50-80wt% of the moulded coal material quality.
2. the coking process according to claim 1 containing low-order coal, which is characterized in that the softening point of the pitch is not small
In 140 DEG C.
3. the coking process according to claim 2 containing low-order coal, which is characterized in that the pitch is hard pitch,
In mass, the fixation carbon content of the hard pitch is 25% or more, C/Hratio 8-11.
4. according to any coking process containing low-order coal of claim 1-3, which is characterized in that in mass, described
The addition of auxiliary agent is the 5-40wt% of the low order coal quality.
5. the coking process according to claim 4 containing low-order coal, which is characterized in that in mass, the auxiliary agent
Addition is the 10-30wt% of the low order coal quality.
6. the coking process according to claim 5 containing low-order coal, which is characterized in that in mass, the low-order coal
Addition be the moulded coal material quality 50-70wt%.
7. the coking process according to claim 6 containing low-order coal, which is characterized in that the G values of the low-order coal are less than
50, volatile content is more than 40%.
8. the coking process according to claim 7 containing low-order coal, which is characterized in that coking temperature in the step (2)
900-1200 DEG C of degree.
9. the coking process according to claim 8 containing low-order coal, which is characterized in that the coking process is in stamp-charging coke
It is carried out in stove, the moulded coal raw material carries out making molding firm by ramming in tamping machine.
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Cited By (2)
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| CN107236560A (en) * | 2016-03-29 | 2017-10-10 | 北京三聚环保新材料股份有限公司 | A kind of technique that coking is carried out to the molding mass containing low-order coal, rubbish and biomass |
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| CN105062530A (en) * | 2015-09-22 | 2015-11-18 | 北京神雾环境能源科技集团股份有限公司 | Lignite upgrading method |
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| CN107236555A (en) * | 2016-03-29 | 2017-10-10 | 北京三聚环保新材料股份有限公司 | A kind of technique that upgrading is carried out to the molding mass containing low-order coal, rubbish and biomass |
| CN107236555B (en) * | 2016-03-29 | 2020-02-28 | 北京三聚环保新材料股份有限公司 | Process for improving quality of molding material containing low-rank coal, garbage and biomass |
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