CN105441099B - A kind of technique that coking is carried out to the moulded coal raw material containing low-order coal - Google Patents
A kind of technique that coking is carried out to the moulded coal raw material containing low-order coal Download PDFInfo
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- CN105441099B CN105441099B CN201410472168.2A CN201410472168A CN105441099B CN 105441099 B CN105441099 B CN 105441099B CN 201410472168 A CN201410472168 A CN 201410472168A CN 105441099 B CN105441099 B CN 105441099B
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Abstract
The invention discloses a kind of technique for carrying out coking to the moulded coal raw material 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；Wherein the auxiliary agent is in the 850 DEG C of isolation organic binders of air destructive distillation weightlessness less than 50%.The technique for carrying out coking in the present invention to the moulded coal raw material containing low-order coal 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 furnace of making firm by ramming
The technique of change belongs to low order coking of coal transformation technology field.
Background technique
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 caused categories of coal various by the effect of many factors.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 lower-grade metamorphic bituminous and mesometamorphism bituminous coal again, 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
Development and utilization, but according to statistics, China's low order coal reserves account for the whole nation and have 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 development and utilization of low-order coal.
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, 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
Furnace 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 benefit
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.
Summary of the invention
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 technique for carrying out coking to the moulded coal raw material containing low-order coal.
For this purpose, the technical scheme adopted by the invention is as follows,
A kind of technique carrying out coking to the moulded coal raw material 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 greater than 800 DEG C, and scorch time is not
Less than 15 hours, the mixture of the raw gas of spilling, tar, crude benzol is collected, while obtaining byproduct coke；
(4) raw gas that separates and collects, tar, crude benzol mixture, obtain raw gas, tar and crude benzol, go forward side by side
One step obtains coal tar pitch in 300-450 DEG C of distillation tar, the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness less than 50%,
Softening point is greater than 100 DEG C, can be used as the organic binder and is back to the step (1)；
Wherein the auxiliary agent is in the 850 DEG C of isolation organic binders of air destructive distillation weightlessness less than 50%.
In the above-mentioned technique for carrying out coking to the moulded coal raw material containing low-order coal, the organic binder is that softening point is big
In 100 DEG C of asphalitine.
In the above-mentioned technique for carrying out coking to the moulded coal raw material containing low-order coal, the auxiliary agent is that coal tar pitch or petroleum drip
Blueness, softening point are not less than 120 DEG C.
In the above-mentioned technique for carrying out coking to the moulded coal raw material containing low-order coal, the softening point of the pitch is not less than
140℃。
In the above-mentioned technique for carrying out coking to the moulded coal raw material containing low-order coal, the pitch is hard pitch, with matter
Meter, the fixation carbon content of the hard pitch is 25% or more, C/Hratio 8-11.
In the above-mentioned technique for carrying out coking to the moulded coal raw material containing low-order coal, in mass, the addition of the auxiliary agent
Amount is the 5-40wt% of the low order coal quality.
In the above-mentioned technique for carrying out coking to the moulded coal raw material containing low-order coal, in mass, the addition of the auxiliary agent
Amount is the 10-30wt% of the low order coal quality.
In the above-mentioned technique for carrying out coking to the moulded coal raw material containing low-order coal, in mass, the low-order coal adds
Enter the 50-80wt% that amount is the moulded coal material quality.
In the above-mentioned technique for carrying out coking to the moulded coal raw material containing low-order coal, in mass, the low-order coal adds
Enter the 50-70wt% that amount is the moulded coal material quality.
In the above-mentioned technique for carrying out coking to the moulded coal raw material containing low-order coal, the G value of the low-order coal is waved less than 50
It sends out part content and is greater than 40%.
In the above-mentioned technique for carrying out coking to the moulded coal raw material containing low-order coal, coking temperature in the step (2)
900-1200℃。
The above-mentioned technique for carrying out coking to the moulded coal raw material containing low-order coal carries out in tamping coke furnace, and the moulded coal is former
Material carries out making molding firm by ramming in tamping machine.
Compared with prior art, the invention has the advantages that,
(1) technique for carrying out coking in the present invention to the moulded coal raw material containing low-order coal, not only solves existing stamp-charging coke
The problem of furnace availability is low, coking industry excess capacity, also solves for low-order coal due to no large-scale industrialization equipment
The problem for keeping its application limited.
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
Agent, is on the one hand conducive to low-order coal and forms in tamping machine, carries out coking to can 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 mixing with low-order coal, wherein the effective component in auxiliary agent facilitates 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 much higher than 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) technique for carrying out coking in the present invention to the moulded coal raw material containing low-order coal, the auxiliary agent are coal or petroleum
Raw material reacts the pitch to be formed, and the softening point of the pitch is not less than 120 DEG C, improves its solid after the completion of low order coking of coal
Product-coke quality, in coke volatile matter can be used for generating electricity no more than the 3-4% by-product coke made, gas making and
Other chemical industry purposes.
Specific embodiment
The technique for carrying out coking to the moulded coal raw material containing low-order coal of the application is suitable for all low-order coals, scala media
Coal, high-order coal or middle high-order coal raw material, for purposes of illustration only, low-order coal is non-low by taking ub-bituminous coal or lignite as an example in following embodiments
The coal raw material of rank coal is by taking 1/3 coking coal as an example.
Wherein, quality=low-order coal quality of dry coal × 75%+ non-low-order coal quality × 90%+ auxiliary agent quality,
What " kg/t dry coal " 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 additional amount of auxiliary agent is the 40wt% of ub-bituminous coal quality, and the additional amount of the ub-bituminous coal is the moulded coal raw material
65wt%, the G value of the ub-bituminous coal is 45, volatile content 65%, the asphalitine that the auxiliary agent is 105 DEG C of softening point,
The asphalitine is in 850 DEG C of isolation air destructive distillation weightlessness 45%；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, controlled 850 DEG C of upgrading temperature, the upgrading time 16 hours, collect
The raw gas of spilling, tar, crude benzol mixture, while obtaining byproduct coke；
(4) using common process separation raw gas, tar and crude benzol, and further tar is distilled at 300 DEG C
Obtain coal tar pitch, after measured the coal tar pitch in the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness less than 50%, softening point
Greater than 100 DEG C.
In the present embodiment, the amount of the obtained raw gas is 450Nm3The amount of/t dry coal, the tar is dry for 54kg/t
Coal, the amount of the byproduct coke are 570kg/t dry coal, and the amount of the crude benzol is 16kg/t dry coal.The coke includes by coke
The non-low-order coal of low-order coal moulded coal layer the low order coal coke generated and the generation of non-low order coal seam of formation is layered after furnace release coke
Coke, in mass, solids carbon content is not less than 60% in the low order coal coke, and volatile matter content is not more than 6%, coke-screening arrangement
Partial size is the 20% of coke gross mass in the particle gross mass of 40mm or more after point, and particle gross mass of the partial size in 25mm or more is
The 60% of coke gross mass；Solids carbon content is not less than 82% in the non-low order coal coke that the non-low-order coal generates, volatile matter
Content is not more than 5%, and partial size is the 81% of coke gross mass in the particle gross mass of 40mm or more after coke screening, and partial size exists
The particle gross mass of 25mm or more is the 92% of coke gross mass.
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 additional amount of the ub-bituminous coal is that the moulded coal is former
Expect the 50wt% of quality, the G value of the ub-bituminous coal is 40, volatile content 70%, the drip that the auxiliary agent is 115 DEG C of softening point
Green matter, the asphalitine is in 850 DEG C of isolation air destructive distillation weightlessness 40%；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, controlled 900 DEG C of upgrading temperature, the upgrading time 15.5 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
(4) using common process separation raw gas, tar and crude benzol, and further tar is distilled at 350 DEG C
Obtain coal tar pitch, after measured the coal tar pitch in the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness less than 50%, softening point
Greater than 100 DEG C.
In the present embodiment, the amount of the obtained raw gas is 500Nm3The amount of/t dry coal, the tar is dry for 54kg/t
Coal, the amount of the byproduct coke are 505kg/t dry coal, and the amount of the crude benzol is 16kg/t dry coal.The coke includes by coke
The non-low-order coal of low-order coal moulded coal layer the low order coal coke generated and the generation of non-low order coal seam of formation is layered after furnace release coke
Coke, in mass, solids carbon content is not less than 58% in the low order coal coke, and volatile matter content is not more than 5%, coke-screening arrangement
Partial size is the 15% of coke gross mass in the particle gross mass of 40mm or more after point, and particle gross mass of the partial size in 25mm or more is
The 55% of coke gross mass, solids carbon content is not less than 82% in the non-low order coal coke that the non-low-order coal generates, volatile matter
Content is not more than 5%, and partial size is the 81% of coke gross mass in the particle gross mass of 40mm or more after coke screening, and partial size exists
The particle gross mass of 25mm or more is the 92% of coke gross mass.
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 additional amount of the ub-bituminous coal is that the moulded coal is former
Expect the 70wt% of quality, the G value of the ub-bituminous coal is 35, volatile content 45%, the drip that the auxiliary agent is 120 DEG C of softening point
Green matter, the asphalitine is in 850 DEG C of isolation air destructive distillation weightlessness 42%；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, controlled 950 DEG C of upgrading temperature, the upgrading time 17 hours, collect
The raw gas of spilling, tar, crude benzol mixture, while obtaining byproduct coke；
(4) using common process separation raw gas, tar and crude benzol, and further tar is distilled at 400 DEG C
Obtain coal tar pitch, after measured the coal tar pitch in the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness less than 50%, softening point
Greater than 100 DEG C.
In the present embodiment, the amount of the obtained raw gas is 500Nm3The amount of/t dry coal, the tar is dry for 54kg/t
Coal, the amount of the byproduct coke are 505kg/t dry coal, and the amount of the crude benzol is 16kg/t dry coal.The coke includes by coke
The non-low-order coal of low-order coal moulded coal layer the low order coal coke generated and the generation of non-low order coal seam of formation is layered after furnace release coke
Coke, in mass, solids carbon content is not less than 72% in the low order coal coke, and volatile matter content is not more than 4%, coke-screening arrangement
Partial size is the 15% of coke gross mass in the particle gross mass of 40mm or more after point, and particle gross mass of the partial size in 25mm or more is
The 55% of coke gross mass, solids carbon content is not less than 82% in the non-low order coal coke that the non-low-order coal generates, volatile matter
Content is not more than 5%, and partial size is the 81% of coke gross mass in the particle gross mass of 40mm or more after coke screening, and partial size exists
The particle gross mass of 25mm or more is the 92% of coke gross mass.
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 additional amount of the ub-bituminous coal is that the moulded coal is former
The G value for expecting ub-bituminous coal described in the 75wt% of quality is 30, volatile content 65%, the drip that the auxiliary agent is 130 DEG C of softening point
Green matter, the asphalitine is in 850 DEG C of isolation air destructive distillation weightlessness 40%；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, 1000 DEG C of upgrading temperature of control, the upgrading time 16.5 hours,
The mixture of the raw gas overflowed, tar, crude benzol is collected, while obtaining byproduct coke；
(4) using common process separation raw gas, tar and crude benzol, and further tar is distilled at 450 DEG C
Obtain coal tar pitch, after measured the coal tar pitch in the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness less than 50%, softening point
Greater than 100 DEG C.
In the present embodiment, the amount of the obtained raw gas is 680Nm3The amount of/t dry coal, the tar is dry for 93kg/t
Coal, the amount of the byproduct coke are 390kg/t dry coal, and the amount of the crude benzol is 27kg/t dry coal.The coke includes by coke
The non-low-order coal of low-order coal moulded coal layer the low order coal coke generated and the generation of non-low order coal seam of formation is layered after furnace release coke
Coke, in mass, solids carbon content is not less than 72% in the low order coal coke, and volatile matter content is not more than 4%, coke-screening arrangement
Partial size is the 15% of coke gross mass in the particle gross mass of 40mm or more after point, and particle gross mass of the partial size in 25mm or more is
The 55% of coke gross mass, solids carbon content is not less than 82% in the non-low order coal coke that the non-low-order coal generates, volatile matter
Content is not more than 5%, and partial size is the 81% of coke gross mass in the particle gross mass of 40mm or more after coke screening, and partial size exists
The particle gross mass of 25mm or more is the 92% of coke gross mass.
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 additional amount of the ub-bituminous coal is that the moulded coal is former
Expect the 80wt% of quality, the G value of the ub-bituminous coal is 20, volatile content 60%, the drip that the auxiliary agent is 140 DEG C of softening point
Green matter, the asphalitine is in 850 DEG C of isolation air destructive distillation weightlessness 35%；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, controlled 1100 DEG C of upgrading temperature, the upgrading time 18 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
(4) using common process separation raw gas, tar and crude benzol, and further tar is distilled at 320 DEG C
Obtain coal tar pitch, after measured the coal tar pitch in the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness less than 50%, softening point
Greater than 100 DEG C.
In the present embodiment, the amount of the obtained raw gas is 680Nm3The amount of/t dry coal, the tar is dry for 90kg/t
Coal, the amount of the byproduct coke are 407kg/t dry coal, and the amount of the crude benzol is 27kg/t dry coal.The coke includes by coke
The non-low-order coal of low-order coal moulded coal layer the low order coal coke generated and the generation of non-low order coal seam of formation is layered after furnace release coke
Coke, in mass, solids carbon content is not less than 64% in the low order coal coke, and volatile matter content is not more than 4%, coke-screening arrangement
Partial size is the 15% of coke gross mass in the particle gross mass of 40mm or more after point, and particle gross mass of the partial size in 25mm or more is
The 55% of coke gross mass, solids carbon content is not less than 82% in the non-low order coal coke that the non-low-order coal generates, volatile matter
Content is not more than 5%, and partial size is the 81% of coke gross mass in the particle gross mass of 40mm or more after coke screening, and partial size exists
The particle gross mass of 25mm or more is the 92% of coke gross mass.
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 additional amount of the ub-bituminous coal is that the moulded coal is former
Expect the 55wt% of quality, the G value of the ub-bituminous coal is 15, volatile content 55%, the height that the auxiliary agent is 150 DEG C of softening point
Warm pitch, the hard pitch, less than 40%, fix carbon content 28%, C/Hratio 8 in 850 DEG C of isolation air destructive distillation weightlessness；
(3) molding feed coal is pushed into coke oven and carries out upgrading, 950 DEG C of upgrading temperature of control, the upgrading time 20 hours,
The mixture of the raw gas overflowed, tar, crude benzol is collected, while obtaining byproduct coke；
(4) using common process separation raw gas, tar and crude benzol, and further tar is distilled at 380 DEG C
Obtain coal tar pitch, after measured the coal tar pitch in the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness less than 50%, softening point
Greater than 100 DEG C.
In the present embodiment, the amount of the obtained raw gas is 570Nm3The amount of/t dry coal, the tar is dry for 62kg/t
Coal, the amount of the byproduct coke are 492kg/t dry coal, and the amount of the crude benzol is 18kg/t dry coal.The coke includes by coke
The non-low-order coal of low-order coal moulded coal layer the low order coal coke generated and the generation of non-low order coal seam of formation is layered after furnace release coke
Coke, in mass, solids carbon content is not less than 64% in the low order coal coke, and volatile matter content is not more than 5%, coke-screening arrangement
Partial size is the 15% of coke gross mass in the particle gross mass of 40mm or more after point, and particle gross mass of the partial size in 25mm or more is
The 55% of coke gross mass, solids carbon content is not less than 82% in the non-low order coal coke that the non-low-order coal generates, volatile matter
Content is not more than 5%, and partial size is the 81% of coke gross mass in the particle gross mass of 40mm or more after coke screening, and partial size exists
The particle gross mass of 25mm or more is the 92% of coke gross mass.
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 additional amount of the ub-bituminous coal is that the moulded coal is former
Expect the 60wt% of quality, the G value of the ub-bituminous coal is 20, volatile content 50%, the height that the auxiliary agent is 170 DEG C of softening point
Warm pitch, the hard pitch is in 850 DEG C of isolation air destructive distillation weightlessness 42%, fixed carbon content 30%, C/Hratio 11；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, controlled 1200 DEG C of upgrading temperature, the upgrading time 24 hours, receive
Collect the mixture of the raw gas overflowed, tar, crude benzol, while obtaining byproduct coke；
(4) using common process separation raw gas, tar and crude benzol, and further tar is distilled at 420 DEG C
Obtain coal tar pitch, after measured the coal tar pitch in the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness less than 50%, softening point
Greater than 100 DEG C.
In the present embodiment, the amount of the obtained raw gas is 550Nm3The amount of/t dry coal, the tar is dry for 54kg/t
Coal, the amount 600kg/t dry coal of the byproduct coke, the amount of the crude benzol are 16kg/t dry coal.The coke includes by coke oven
The non-low order coal tar of low-order coal moulded coal layer the low order coal coke generated and the generation of non-low order coal seam of formation is layered after release coke
Charcoal, in mass, solids carbon content is not less than 55% in the low order coal coke, and volatile matter content is not more than 3%, coke screening
Partial size is the 5% of coke gross mass in the particle gross mass of 40mm or more afterwards, and partial size is coke in the particle gross mass of 25mm or more
The 50% of charcoal gross mass, solids carbon content is not less than 82% in the non-low order coal coke that the non-low-order coal generates, and volatile matter contains
Amount is not more than 5%, and partial size is the 81% of coke gross mass in the particle gross mass of 40mm or more after coke screening, and partial size is in 25mm
Above particle gross mass is the 92% of coke gross mass.
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 additional amount of the ub-bituminous coal is that the moulded coal is former
Expect the 50wt% of quality, the G value of the ub-bituminous coal is 15, volatile content 45%, the height that the auxiliary agent is 190 DEG C of softening point
Warm pitch, the hard pitch is in 850 DEG C of isolation air destructive distillation weightlessness 45%, fixed carbon content 28%, C/Hratio 10；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, controlled 950 DEG C of upgrading temperature, the upgrading time 20 hours, collect
The raw gas of spilling, tar, crude benzol mixture, while obtaining byproduct coke；
(4) using common process separation raw gas, tar and crude benzol, and further tar is distilled at 300 DEG C
Obtain coal tar pitch, after measured the coal tar pitch in the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness less than 50%, softening point
Greater than 100 DEG C.
In the present embodiment, the amount of the obtained raw gas is 380Nm3The amount of/t dry coal, the tar is dry for 46kg/t
Coal, the amount of the byproduct coke are 653kg/t dry coal, and the amount of the crude benzol is 16kg/t dry coal.The coke includes by coke
The non-low-order coal of low-order coal moulded coal layer the low order coal coke generated and the generation of non-low order coal seam of formation is layered after furnace release coke
Coke, in mass, solids carbon content is not less than 64% in the low order coal coke, and volatile matter content is not more than 4%, coke-screening arrangement
Partial size is the 5% of coke gross mass in the particle gross mass of 40mm or more after point, and particle gross mass of the partial size in 25mm or more is
The 55% of coke gross mass, solids carbon content is not less than 82% in the non-low order coal coke that the non-low-order coal generates, volatile matter
Content is not more than 5%, and partial size is the 81% of coke gross mass in the particle gross mass of 40mm or more after coke screening, and partial size exists
The particle gross mass of 25mm or more is the 92% of coke gross mass.
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 additional amount of the lignite is the moulded coal raw material matter
The 80wt% of amount, the G value of the lignite are 20, and volatile content 55%, the auxiliary agent is the pitch that softening point is greater than 110 DEG C
Matter, the asphalitine is in 850 DEG C of isolation air destructive distillation weightlessness 45%；
(3) molding feed coal is pushed into coke oven and carries out upgrading, 850 DEG C of upgrading temperature of control, the upgrading time 16 hours,
The mixture of the raw gas overflowed, tar, crude benzol is collected, while obtaining byproduct coke；
(4) using common process separation raw gas, tar and crude benzol, and further tar is distilled at 350 DEG C
Obtain coal tar pitch, after measured the coal tar pitch in the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness less than 50%, softening point
Greater than 100 DEG C.
In the present embodiment, the amount of the obtained raw gas is 550Nm3The amount of/t dry coal, the tar is dry for 62kg/t
Coal, the amount of the byproduct coke are 458kg/t dry coal, and the amount of the crude benzol is 18kg/t dry coal.The coke includes by coke
The non-low-order coal of low-order coal moulded coal layer the low order coal coke generated and the generation of non-low order coal seam of formation is layered after furnace release coke
Coke, in mass, solids carbon content is not less than 57% in the low order coal coke, and volatile matter content is not more than 6%, coke-screening arrangement
Partial size is the 15% of coke gross mass in the particle gross mass of 40mm or more after point, and particle gross mass of the partial size in 25mm or more is
The 50% of coke gross mass, solids carbon content is not less than 82% in the non-low order coal coke that the non-low-order coal generates, volatile matter
Content is not more than 5%, and partial size is the 81% of coke gross mass in the particle gross mass of 40mm or more after coke screening, and partial size exists
The particle gross mass of 25mm or more is the 92% of coke gross mass.
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 additional amount of the lignite is the moulded coal raw material matter
The 60wt% of amount, the G value of the lignite are 20, and volatile content 55%, the high temperature that the auxiliary agent is 150 DEG C of softening point drips
Blueness, the hard pitch is in 850 DEG C of isolation air destructive distillation weightlessness 30%, fixed carbon content 30%, C/Hratio 8；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, controlled 950 DEG C of upgrading temperature, the upgrading time 24 hours, collect
The raw gas of spilling, tar, crude benzol mixture, while obtaining byproduct coke；
(4) using common process separation raw gas, tar and crude benzol, and further tar is distilled at 400 DEG C
Obtain coal tar pitch, after measured the coal tar pitch in the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness less than 50%, softening point
Greater than 100 DEG C.
In the present embodiment, the amount of the obtained raw gas is 400Nm3The amount of/t dry coal, the tar is dry for 48kg/t
Coal, the amount of the byproduct coke are 635kg/t dry coal, and the amount of the crude benzol is 17kg/t dry coal.The coke includes by coke
The non-low-order coal of low-order coal moulded coal layer the low order coal coke generated and the generation of non-low order coal seam of formation is layered after furnace release coke
Coke, in mass, solids carbon content is not less than 72% in the low order coal coke, and volatile matter content is not more than 4%, coke-screening arrangement
Partial size is the 20% of coke gross mass in the particle gross mass of 40mm or more after point, and particle gross mass of the partial size in 25mm or more is
The 55% of coke gross mass, solids carbon content is not less than 82% in the non-low order coal coke that the non-low-order coal generates, volatile matter
Content is not more than 5%, and partial size is the 81% of coke gross mass in the particle gross mass of 40mm or more after coke screening, and partial size exists
The particle gross mass of 25mm or more is the 92% of coke gross mass.
Embodiment 11
(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, the auxiliary agent is the coal tar pitch that embodiment 10 is prepared, and in mass, the addition quality of auxiliary agent is lignite quality
30wt%, the additional amount of the lignite are the 60wt% of the raw material coal quality, and the G value of the lignite is 20, volatile content
It is 55%, 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
30%, fixed carbon content 30%, C/Hratio 8；
(3) molding feed coal is pushed into coke oven and carries out coking, 950 DEG C of coking temperature of control, scorch time 24 hours,
The mixture of the raw gas overflowed, tar, crude benzol is collected, while obtaining byproduct coke；
(4) using common process separation raw gas, tar and crude benzol, and further tar is distilled at 450 DEG C
Obtain coal tar pitch, after measured the coal tar pitch in the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness less than 50%, softening point
Greater than 100 DEG C.
In the present embodiment, the amount of the obtained raw gas is 410Nm3/ t dry coal, the amount of the tar are 48.5kg/t
Dry coal, the amount of the byproduct coke are 630kg/t dry coal, and the amount of the crude benzol is 17kg/t dry coal.The coke include by
The non-low order of low-order coal moulded coal layer the low order coal coke generated and the generation of non-low order coal seam of formation is layered after coke oven release coke
Coal coke, in mass, solids carbon content is not less than 72% in the low order coal coke, and volatile matter content is not more than 4%, coke
Partial size is the 21% of coke gross mass in the particle gross mass of 40mm or more after screening, particle gross mass of the partial size in 25mm or more
It is the 54% of coke gross mass, solids carbon content is not less than 82% in the non-low order coal coke that the non-low-order coal generates, volatilization
Content is divided to be not more than 5%, partial size is the 81% of coke gross mass in the particle gross mass of 40mm or more after coke screening, and partial size exists
The particle gross mass of 25mm or more is the 92% of coke gross mass.
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 to continue using tamping machine with the low-order coal raw material that auxiliary agent is formed 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 additional amount of the lignite is the 60wt% of the moulded coal material quality, and the G value of the lignite is
20, volatile content 55%, the auxiliary agent is the asphalitine that softening point is greater than 80 DEG C, and the asphalitine is empty in 850 DEG C of isolations
Gas destructive distillation weightlessness 60%；
(2) moulded coal raw material is pushed into coke oven and carries out upgrading, controlled 950 DEG C of upgrading temperature, the upgrading time 24 hours, collect
The raw gas of spilling, tar, crude benzol mixture, while obtaining byproduct coke；
(3) using common process separation raw gas, tar and crude benzol, and further tar is distilled at 400 DEG C
Coal tar pitch is obtained, the coal tar pitch is in the coal tar pitch in 800 DEG C of isolation air destructive distillation weightlessness 66%, softening point 60 after measured
℃。
In the present embodiment, the amount of the obtained raw gas is 320Nm3The amount of/ton dry coal, the tar is dry for 44kg/t
Coal, the amount of the byproduct coke are 870kg/t dry coal, and the amount of the crude benzol is 18kg/t dry coal.The coke includes by coke
The non-low-order coal of low-order coal moulded coal layer the low order coal coke generated and the generation of non-low order coal seam of formation is layered after furnace release coke
Coke, in mass, solids carbon content is not less than 55% in the low order coal coke, and volatile matter content is not more than 4%, coke-screening arrangement
Partial size is the 15% of coke gross mass in the particle gross mass of 40mm or more after point, and particle gross mass of the partial size in 25mm or more is
The 55% of coke gross mass, solids carbon content is not less than 82% in the non-low order coal coke that the non-low-order coal generates, volatile matter
Content is not more than 5%, and partial size is the 70% of coke gross mass in the particle gross mass of 40mm or more after coke screening, and partial size exists
The particle gross mass of 25mm or more is the 86% of coke gross mass.
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 technique for carrying out coking to the moulded coal raw material 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, spare, the additional amount of the auxiliary agent is the low order
The 5-40wt% of coal quality, wherein the auxiliary agent is in the 850 DEG C of isolation organic binders of air destructive distillation weightlessness less than 50%, institute
Stating organic binder is coal asphalt or petroleum asphalt, and the softening point of the pitch is not less than 120 DEG C；
(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, so that final moulded coal raw material is formed, it is described low
The additional amount of rank coal is the 50-80wt% of the moulded coal material quality；
(3) the moulded coal raw material is pushed into coke oven and carries out coking, control coking temperature is greater than 800 DEG C, and scorch time is not less than
15 hours, the mixture of the raw gas of spilling, tar, crude benzol is collected, while obtaining byproduct coke；
(4) raw gas that separates and collects, tar, crude benzol mixture, obtain raw gas, tar and crude benzol, and further
Coal tar pitch is obtained in 300-450 DEG C of distillation tar, the coal tar pitch, less than 50%, softens in 800 DEG C of isolation air destructive distillation weightlessness
Point is greater than 100 DEG C, can be used as the organic binder and is back to the step (1).
2. the technique according to claim 1 for carrying out coking to the moulded coal raw material containing low-order coal, which is characterized in that described
The softening point of pitch is not less than 140 DEG C.
3. the technique according to claim 2 for carrying out coking to the moulded coal raw material containing low-order coal, which is characterized in that described
Pitch is hard pitch, and in mass, the fixation carbon content of the hard pitch is 25% or more, C/Hratio 8-11.
4. the technique according to claim 3 for carrying out coking to the moulded coal raw material containing low-order coal, which is characterized in that with matter
Meter, the additional amount of the auxiliary agent are the 10-30wt% of the low order coal quality.
5. the technique according to claim 1 to 4 for carrying out coking to the moulded coal raw material containing low-order coal, feature exist
In in mass, the additional amount of the low-order coal is the 50-70wt% of the moulded coal material quality.
6. the technique according to claim 5 for carrying out coking to the moulded coal raw material containing low-order coal, which is characterized in that described
For the G value of low-order coal less than 50, volatile content is greater than 40%.
7. the technique according to claim 6 for carrying out coking to the moulded coal raw material containing low-order coal, which is characterized in that described
900-1200 DEG C of coking temperature in step (3).
8. the technique according to claim 7 for carrying out coking to the moulded coal raw material containing low-order coal, which is characterized in that described
Coking process carries out in tamping coke furnace, and the moulded coal raw material carries out making molding firm by ramming in tamping machine.
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| JP3027084B2 (en) * | 1994-03-29 | 2000-03-27 | 新日本製鐵株式会社 | Method for producing molded coke for metallurgy |
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| CN102300957A (en) * | 2009-02-03 | 2011-12-28 | 吉坤日矿日石能源株式会社 | Process for producing binder for coke production and process for producing coke |
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