CN105482843B - A kind of technique that upgrading is carried out to the moulded coal containing low-order coal using tamping coke furnace - Google Patents
A kind of technique that upgrading is carried out to the moulded coal containing low-order coal using tamping coke furnace Download PDFInfo
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Abstract
The invention discloses a kind of technique for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace, 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 carried out making molding firm by ramming and forms non-low-order coal moulded coal layer；And low-order coal raw material is added on non-low-order coal moulded coal layer and continues to carry out making firm by ramming molding to 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, to form final moulded coal raw material；(3) the moulded coal raw material is pushed into coke oven and carries out upgrading；The auxiliary agent is in the 850 DEG C of isolation organic binders of air destructive distillation weightlessness less than 50%.The technique that upgrading is carried out to the moulded coal containing low-order coal using tamping coke furnace in the present invention, the problem of not only solving low existing tamping coke furnace availability, 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 process for upgrading of low-order coal, and in particular to it is a kind of using tamping coke furnace to containing low-order coal
Moulded coal carries out the technique of upgrading, belongs to low-order coal upgrading 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, so that coke needs
The amount of asking is reduced, price declines, so that coke-oven plant be forced to reduce coke output.
Contradictory to be, once coke output reduces, tamping coke furnace can be deactivated, and tamping coke furnace is once out of service
It can scrap, therefore in order to protect the tamping coke furnace equipment for furnishing a huge amount of money for invest to build, would have to maintain coke oven in minimum level
Operation brings the excess capacity of coking industry to cause coke output that cannot reduce by market demand, two contradict under
How in the case where meeting coke normal volume, the operation of tamping coke furnace is kept to become key.
Low-order coal is the coal of China's rich reserves and there is no the enlarged equipment for low-order coal application at present, if
The tamping coke furnace that middle high-order coking of coal technique can be used is applied in the process for upgrading of low-order coal, then not only facilitating solution
Certainly the problem of coking industry excess capacity, moreover it is possible to be promoted the application of low-order coal.But low-order coal have volatile matter it is high,
The high feature of easy dusting, ash content, the middle high-order coal feedstock specifications used with existing tamping coke furnace are entirely different, it is not easy first
The characteristics of molding, determines that low-order coal can not be pushed into tamping coke furnace carries out coking, and the solid that secondly low-order coal obtains after upgrading produces
Product are the low-quality product of dusting, and the product of dusting causes tamping coke furnace to be difficult to coke pushing outward again, still limits tamping coke furnace
Use, most importantly the temperature of low-order coal upgrading needs to be maintained between 200-800 DEG C, and tamping coke furnace need exist
800 DEG C used above, and the low-order coal product obtained after high-temperature retorting is theoretically made to lose use value.
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,
Tamping coke furnace availability low problem a kind of carries out upgrading to the moulded coal containing low-order coal using tamping coke furnace to provide
Technique.
For this purpose, the technical scheme adopted by the invention is as follows,
A kind of technique carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace, 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 made firm by ramming using tamping machine
Molding, forms 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 use to make firm by ramming to set
It is standby that the low-order coal raw material is carried out to make molding firm by ramming, the low-order coal moulded coal layer being located on the non-low-order coal moulded coal layer is formed, from
And form final moulded coal raw material；
(3) moulded coal raw material is pushed into coke oven and carries out upgrading, control upgrading temperature is greater than 800 DEG C, and the upgrading time is not less than
15 hours, the mixture of the raw gas of spilling, tar, crude benzol is collected, while obtaining byproduct coke；
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 upgrading to the moulded coal containing low-order coal using tamping coke furnace, the organic binder is
Softening point is greater than 100 DEG C of asphalitine.
In the above-mentioned technique for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace, the auxiliary agent is coal or stone
Oil system raw material reacts the pitch to be formed, and the softening point of the pitch is not less than 120 DEG C.
In the above-mentioned technique for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace, the softening point of the pitch
Not less than 140 DEG C.
In the above-mentioned technique for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace, the pitch is high temperature drip
Blueness, in mass, the fixation carbon content of the hard pitch is 25% or more, C/Hratio 8-11.
It is in mass, described to help in the above-mentioned technique for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace
The additional amount of agent is the 5-40wt% of the low order coal quality.
It is in mass, described to help in the above-mentioned technique for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace
The additional amount of agent is the 10-30wt% of the low order coal quality.
It is in mass, described low in the above-mentioned technique for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace
The additional amount of rank coal is the 50-80wt% of moulded coal material quality.
It is in mass, described low in the above-mentioned technique for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace
The additional amount of rank coal is the 50-70wt% of moulded coal material quality.
In the above-mentioned technique for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace, the G value of the low-order coal
Less than 50, volatile content is greater than 40%.
In the above-mentioned technique for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace, mentioned in the step (2)
Matter temperature is 850-1000 DEG C.
Compared with prior art, the invention has the advantages that,
(1) technique for being carried out upgrading in the present invention to the moulded coal containing low-order coal using tamping coke furnace is not only solved existing
There is the problem of low tamping coke furnace availability, coking industry excess capacity, also solves for low-order coal due to without large-scale work
The problem that industry equipment keeps 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 upgrading to can be pushed into tamping coke furnace, another
Its solid product is not pulverized easily after the completion of aspect low-order coal upgrading, 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.
(2) technique for carrying out upgrading in the present invention to the moulded coal containing low-order coal using tamping coke furnace, 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 low-order coal upgrading completion
Its solid product-coke quality afterwards, 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 upgrading to the moulded coal containing low-order coal using tamping coke furnace of the application is suitable for all low orders
Coal, scala media coal, high-order coal or middle high-order coal raw material, for purposes of illustration only, low-order coal with ub-bituminous coal or lignite is in following embodiments
Example, the coal raw material of non-low-order 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；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 450Nm3/ t dry coal, the amount of the tar are 54kg/t dry coal, and the amount of the byproduct coke is 570kg/t dry coal,
The amount of the crude benzol is 16kg/t dry coal.
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；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 500Nm3/ t dry coal, the amount of the tar are 54kg/t dry coal, and the amount of the byproduct coke is 505kg/t dry coal,
The amount of the crude benzol is 16kg/t dry coal.
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；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 500Nm3/ t dry coal, the amount of the tar are 54kg/t dry coal, and the amount of the byproduct coke is 505kg/t dry coal,
The amount of the crude benzol is 16kg/t dry coal.
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；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 680Nm3/ t dry coal, the amount of the tar are 93kg/t dry coal, and the amount of the byproduct coke is 390kg/t dry coal,
The amount of the crude benzol is 27kg/t dry coal.
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；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 680Nm3/ t dry coal, the amount of the tar are 90kg/t dry coal, and the amount of the byproduct coke is 407kg/t dry coal,
The amount of the crude benzol is 27kg/t dry coal.
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；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 570Nm3/ t dry coal, the amount of the tar are 62kg/t dry coal, and the amount of the byproduct coke is 492kg/t dry coal,
The amount of the crude benzol is 18kg/t dry coal.
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；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 550_Nm3/ t dry coal, the amount of the tar are 54kg/t dry coal, the amount 600kg/t dry coal of the byproduct coke, institute
The amount for stating crude benzol is 16kg/t dry coal.
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；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 380Nm3/ t dry coal, the amount of the tar are 46kg/t dry coal, and the amount of the byproduct coke is 653kg/t dry coal,
The amount of the crude benzol is 16kg/t dry coal.
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；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 550Nm3/ t dry coal, the amount of the tar are 62kg/t dry coal, and the amount of the byproduct coke is 458kg/t dry coal,
The amount of the crude benzol is 18kg/t dry coal.
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；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 400Nm3/ t dry coal, the amount of the tar are 48kg/t dry coal, and the amount of the byproduct coke is 635kg/t dry coal,
The amount of the crude benzol is 17kg/t dry coal.
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；
Raw gas, tar are separated using common process, and further separate crude benzol from tar, the obtained raw gas
Amount be 320Nm3/ t dry coal, the amount of the tar are 44kg/t dry coal, and the amount of the byproduct coke is 870kg/t dry coal,
The amount of the crude benzol is 18kg/t dry coal.
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 (7)
1. a kind of technique for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace, 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；
(2) one or more of the scala media coal of crushing, high-order coal or middle high-order coal are carried out making molding firm by ramming using tamping machine,
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 using tamping machine to institute
It states low-order coal raw material to carry out making molding firm by ramming, the low-order coal moulded coal layer being located on the non-low-order coal moulded coal layer is formed, to be formed
Final moulded coal raw material, in mass, the additional amount of the low-order coal are the 50-80wt% of the moulded coal material quality；
(3) the moulded coal raw material is pushed into coke oven and carries out upgrading, control upgrading temperature is greater than 800 DEG C, and the upgrading time is not less than
15 hours, the mixture of the raw gas of spilling, tar, crude benzol is collected, while obtaining byproduct coke；
Wherein the auxiliary agent is in the 850 DEG C of isolation coal asphalt or petroleum asphalts of air destructive distillation weightlessness less than 50%, and the coal
The softening point of pitch or asphalt is not less than 120 DEG C.
2. the technique according to claim 1 for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace, feature
It is, the softening point of the coal asphalt or petroleum asphalt is not less than 140 DEG C.
3. the technique according to claim 2 for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace, feature
Be, the coal asphalt or petroleum asphalt is hard pitch, in mass, the fixation carbon content of the hard pitch 25% with
On, C/Hratio 8-11.
4. the technique according to claim 3 for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace, feature
It is, in mass, the additional amount of the auxiliary agent is the 10-30wt% of the low order coal quality.
5. the technique according to claim 1 to 4 for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace,
It is characterized in that, 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 upgrading to the moulded coal containing low-order coal using tamping coke furnace, feature
It is, for the G value of the low-order coal less than 50, volatile content is greater than 40%.
7. the technique according to claim 6 for carrying out upgrading to the moulded coal containing low-order coal using tamping coke furnace, feature
It is, upgrading temperature is 850-1000 DEG C in the step (3).
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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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