CN106929063A - A kind of moulding process of low-order coal and the moulded coal as obtained in the technique - Google Patents
A kind of moulding process of low-order coal and the moulded coal as obtained in the technique Download PDFInfo
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- CN106929063A CN106929063A CN201511020879.7A CN201511020879A CN106929063A CN 106929063 A CN106929063 A CN 106929063A CN 201511020879 A CN201511020879 A CN 201511020879A CN 106929063 A CN106929063 A CN 106929063A
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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
- C10B55/00—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material
- C10B55/02—Coking mineral oils, bitumen, tar, and the like or mixtures thereof with solid carbonaceous material with solid materials
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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
- C10B57/045—Other carbonising or coking processes; Features of destructive distillation processes in general using charges of special composition containing mineral oils, bitumen, tar or the like or mixtures thereof
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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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- 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
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
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- Oil, Petroleum & Natural Gas (AREA)
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Coke Industry (AREA)
Abstract
The invention provides the moulding process and the moulded coal as obtained in the technique of a kind of low-order coal burnt for coking production gasification, the moulding process includes that being dried treatment to low-order coal under anaerobic makes its water content be reduced to 15-20wt%, then dried low-order coal is mixed with binding agent and moulded coal is pressed into.One aspect of the present invention solves that dehydration operation difficulty of the prior art is big, the deficiency of high energy consumption, on the other hand the defect of the small low-order coal of water content easy spontaneous combustion in pressing process is also overcomed, and the present invention is by the process conditions of strict control compacting, only needing pressing one-time just can be molded low-order coal, thus can Simplified flowsheet and be additionally favorable for reduce energy consumption, reduces cost input.In addition, the compression strength of the low-order coal moulded coal that the present invention is provided is up to 27MPa, the moulded coal raw material can produce more raw gas, tar and coke under appropriate coking condition, and gained coke can be released directly from coke oven so that low-order coal moulded coal of the invention is highly suitable for coking.
Description
Technical field
It is applied to low-order coal the present invention relates to low-order coal upgrading transformation technology field, more particularly to one kind
The low-order coal moulding process and the moulded coal raw material as obtained in the technique of coking are carried out for raw material.
Background technology
Since 18th century, coal has turned into one of widely used energy of human world, with regard to China
Energy consumption structure for, current coal occupies 70% or so, is the national main energy sources depended on for existence.
According to the difference of structure and composition, coal is divided into lignite, bituminous coal and anthracite three major types, its metabituminous coal
It is divided into lower-grade metamorphic bituminous and mesometamorphism bituminous coal again, lower-grade metamorphic bituminous also referred to as ub-bituminous coal, itself and lignite one
Rise and be referred to as " low-order coal ".According to statistics, the reserves of China's low-order coal account for national explored coal reserves
More than 55%, up to 561,200,000,000 tons, but because low-order coal is used as the product at incoalation initial stage,
With phosphorus content it is low, moisture is high, easy efflorescence, easy spontaneous combustion, fugitive constituent high, immersion intensity difference, anti-dropping
The features such as intensity difference, thus the serious direct exploitation for limiting low-order coal, this undoubtedly causes huge
The big wasting of resources.In addition, increasingly increase and high-quality coal stock number with domestic energy demand
Fall sharply, the upgrading conversion of low-order coal already turns into current China's energy research with comprehensive utilization with exploitation
Major fields.
So far, the Upgrading Processes both at home and abroad for low-order coal are broadly divided into pyrolysis upgrading skill
Art, non-evaporating dehydrolysis upgrading technology and shaping upgrading technology three major types, wherein, for shaping upgrading skill
For art, in forming process, the physical action such as high pressure or shearing is to its gel structure and hole for low-order coal
Slot sytem generates irreversible destruction, it is thus possible to inherently lifts the coal rank of low-order coal, makes it
Degree of coalification is also improved therewith, so as to the dust for solving drying low-order coal is big, easily water suction, easily again
In deficiencies such as spontaneous combustions, and make the low-order coal moulded coal for obtaining that there is certain water proofing property.For example, China is specially
Sharp document CN101928619A discloses a kind of lignite coal cinder forming method for being easy to Container Transport, its
Comprise the following steps：(1) Feedstock treating：By drying device adjust brown coal powder temperature 100 DEG C ±
5 DEG C, moisture content 12-14% (weight)；(2) it is compressing：Brown coal powder is suppressed by hydraulic machinery,
Compacting pressure ＞ 35MPa, compacting pattern is 3-4 compacting；(3) cool down：Lump coal after compacting passes through
Stand natural cooling.Above-mentioned technology is not in the case where binding agent is used directly by brown coal powder briquet
Coal, effectively reduces coal dust dust pollution caused in use, contributes to environmental protection,
Lump coal obtained in the technology has good water resistance and stability simultaneously, is easy to Container Transport.
But, above-mentioned technology can directly by lignite pressing and shaping to be possessed two it is a prerequisite that
Dewater treatment is carried out firstly the need of to lignite, so that its moisture content is reduced to 12-14wt%, secondly, is protected
Pressure during card compacting is more than 35MPa, and needs to suppress 3-4 times and could be molded.Due to above-mentioned technology
Water content requirement to lignite is higher, causes the operation difficulty of dehydration greatly, and high energy consumption is more important
Be low water content lignite easily spontaneous combustion, especially pressure more than 35MPa pressing conditions under,
Cause the dangerous raising of safety in production.In order to solve the above problems, be divided into for suppression process by the technology
Carry out for 3-4 times, the risk of lignite spontaneous combustion is reduced to a certain extent, but can not be fundamentally effective
Containment, and repeatedly suppress and can also cause technique time-consuming, same energy consumption is also higher.In addition, above-mentioned
Jiao formed after moulded coal coking obtained in technology is in powdered, it is impossible to realizes coke pushing, thus also limits
Application of the above-mentioned moulded coal in coking field.Therefore, the moulding process of low-order coal how is improved to overcome
The drawbacks described above that prior art is present, is still the still unsolved technical barrier in this area.
The content of the invention
Present invention solves the technical problem that being to overcome existing for low-order coal moulding process of the prior art
Trivial operations, the defect that difficulty is big, time-consuming, high energy consumption, security risk are high, and then provide one
Plant the low-order coal moulding process that simple and efficient to handle, energy consumption is low, security is good.
Another technical problem that the present invention is solved is to overcome low-order coal moulded coal of the prior art to be deposited
The defect for being not used to coking, and then one kind is provided can be used for coking and gained coke can be applied to
Static bed gas making field, replacement lump coal are used for gas making production combustion gas, synthesis ammonia, methyl alcohol and other chemical industry
The low-order coal moulded coal raw material and its moulding process of product.
Therefore, the present invention realizes that the technical scheme of above-mentioned purpose is：
A kind of moulding process of low-order coal, comprises the following steps：
Drying steps：Treatment is dried to low-order coal under 105-120 DEG C of oxygen free condition, until institute
The water content stated in low-order coal reaches 15-20wt%；
Pressing step：It is in mass ratio by the dried low-order coal and binding agent (90-70):
The ratio of (10-30) mixes to form mixture, using the pressure of 20-30MPa by the mixture pressure
It is made moulded coal.
Before the dried process, the granularity of the low-order coal is not more than 6mm；The G of the low-order coal
Value is more than 40% less than 40, volatile matter content.
The water content is 15-17wt%.
Temperature in the drying steps is 107-110 DEG C.
The binding agent is the weightless organic adhesive less than 50% of destructive distillation under conditions of completely cutting off air at 850 DEG C
Agent.
The organic binder bond is asphalitine of the softening point more than 100 DEG C.
Mixture pressurize 0.1-2min under 20-30MPa, is obtained the moulded coal.
Before the low-order coal after the drying mixes with the binding agent, by the dried low order
Coal is cooled to 30-40 DEG C.
The low-order coal moulded coal as obtained in above-mentioned moulding process.
The present invention is using hydraulic test to the low-order coal after above-mentioned cooling or itself and mixing that binding agent is formed
Compound carries out compression process, the difference of the shape and size according to the mould for being used, and tool can be obtained
There is the moulded coal of arbitrary shape and size.Preferably, the shape and size of the obtained moulded coal of the present invention with smash
Gu the carbonization chamber of coke oven matches and is advisable.
Above-mentioned technical proposal of the invention has the following advantages that：
1st, the moulding process of the low-order coal that the present invention is provided, by under 100-120 DEG C of oxygen free condition
Low-order coal is dried and is processed so that its water content is reduced to 15-20wt%, dried low-order coal with
Binding agent mixes and is pressed into moulded coal, because the water content of dried low-order coal of the invention is of a relatively high,
On the one hand solve that dehydration operation difficulty of the prior art is big, the deficiency of high energy consumption, the opposing party
Face also overcomes the low low-order coal of water content easily defect of spontaneous combustion in pressing process, reduces low order
The danger coefficient of coal moulding process.
Also, pressure when moulding process of the invention is by strict control compacting, only needs pressing one-time
Just low-order coal can be enable to be molded so that process is simple of the invention, it is easily operated and also have
Put into beneficial to energy consumption, reduces cost is reduced.
2nd, the low-order coal moulded coal that the present invention is provided, up to 27MPa, the moulded coal raw material exists its compression strength
More raw gas, tar and coke can be produced under appropriate coking condition, and gained coke can be direct
Released from coke oven so that low-order coal moulded coal of the invention is highly suitable for coking, thus solved existing
There is the low-order coal in technology to be not used to match greatly the defect of coking.
Specific embodiment
Technical scheme will be clearly and completely described below, it is clear that described
Embodiment is a part of embodiment of the invention, rather than whole embodiments.Based in the present invention
Embodiment, it is all that those of ordinary skill in the art are obtained under the premise of creative work is not made
Other embodiment, belongs to the scope of protection of the invention.Additionally, invention described below is different
As long as involved technical characteristic does not constitute conflict and can just be combined with each other each other in implementation method.
Low-order coal composition in low-order coal moulding process of the present invention is applied to all of low-order coal coal
Plant or its mixture, for purposes of illustration only, the low-order coal in following embodiments is by taking ub-bituminous coal or lignite as an example.
In following examples, wt% represents weight/mass percentage composition；The quality of the moulded coal=(quality of low-order coal × low
Quality × binding agent quality that rank ature of coal amount accounts for the percentage+binding agent of briquet quality accounts for briquet quality
Percentage), " kg/t moulded coals " refers to kilogram number, " Nm of the product that moulded coal per ton is obtained3/ t moulded coals " refer to
The volume of the raw gas that moulded coal per ton is obtained is converted into 0 DEG C, the 1 cubic meter number of normal atmosphere pressure.
Embodiment 1
The moulding process of the low-order coal described in the present embodiment, comprises the following steps：
(1) treatment is dried to lignite under 107 DEG C of oxygen free condition, until the lignite contains
Water reaches 20wt%；The G values of the lignite are that 0, volatile matter content is 60% and before it is dried
Granularity is no more than 6mm；
(2) lignite after to be dried is naturally cooling to 30-40 DEG C afterwards, and it is pressed into 9: 1 with binding agent
Ratio mix to form mixture, the mixture is placed in hydraulic press, the pressurize 1min under 20MPa
Obtain final product the moulded coal of rectangular-shape；The binding agent is the coal tar asphalt that softening point is 110 DEG C, its
Destructive distillation under 850 DEG C of isolation air conditionses is weightless for 45%.
Coking treatment will be carried out in moulded coal raw material feeding coke oven obtained in the present embodiment, control coking temperature
For 950 DEG C, scorch time are 16 hours, raw gas, the tar for overflowing are collected, while obtaining coke；
Using the isolated raw gas of common process and tar, the amount of the raw gas for obtaining is 335.5Nm3/t
Moulded coal, the amount of the tar is 17kg/t moulded coals, and the amount of the coke is 490kg/t moulded coals.Wherein
Solids carbon content in the coke is not less than 47%, and volatile matter content is not more than 3%, coke screening
Particle diameter is the 20% of coke gross mass in the particle gross mass of more than 40mm afterwards, and particle diameter is in more than 25mm
Particle gross mass for coke gross mass 50%.
Embodiment 2
The moulding process of the low-order coal described in the present embodiment, comprises the following steps：
(1) treatment is dried to ub-bituminous coal under 105 DEG C of oxygen free condition, until the ub-bituminous coal
Water content reach 18wt%；The G values of the ub-bituminous coal are that 0, volatile matter content is 60% and dries
Preceding granularity is no more than 6mm；
(2) ub-bituminous coal after to be dried is cooled to 30 DEG C -40 DEG C afterwards, and it is pressed into 9: 1 with binding agent
Ratio mix to form mixture, the mixture is placed in hydraulic press, the pressurize 0.1min under 20MPa
Obtain final product the moulded coal of rectangular-shape；The binding agent is the asphalt that softening point is 120 DEG C, and it is at 850 DEG C
Destructive distillation under isolation air conditionses is weightless for 47%.
Coking treatment will be carried out in moulded coal raw material push-in coke oven obtained in the present embodiment, control coking temperature
For 950 DEG C, scorch time are 16 hours, raw gas, the mixture of tar for overflowing are collected, while
Obtain coke；Using the isolated raw gas of common process and tar, the amount of the raw gas for obtaining
It is 343.86Nm3/ t moulded coals, the amount of the tar is 17.6kg/t moulded coals, and the amount of the coke is
502.3kg/t moulded coals.Solids carbon content in wherein described coke is not less than 47%, volatile matter content
No more than 3%, particle diameter is coke gross mass in the particle gross mass of more than 40mm after coke screening
25%, particle diameter is the 50% of coke gross mass in the particle gross mass of more than 25mm.
Embodiment 3
The moulding process of the low-order coal described in the present embodiment, comprises the following steps：
(1) treatment is dried to ub-bituminous coal under 110 DEG C of oxygen free condition, until the ub-bituminous coal
Water content reach 15wt%；The G values of the ub-bituminous coal are that 20, volatile matter content is 40% and dries
Preceding granularity is no more than 6mm；
(2) ub-bituminous coal after to be dried is cooled to 30 DEG C afterwards, will have with binding agent in 4: 1 ratio
Mixing forms mixture, then the mixture is placed in hydraulic press, and pressurize 2min is obtained final product under 30MPa
The moulded coal of rectangular-shape；The binding agent is the asphalt that softening point is 105 DEG C, its 850 DEG C every
Destructive distillation under exhausted air conditionses is weightless for 40%.
Coking treatment will be carried out in moulded coal raw material push-in coke oven obtained in the present embodiment, control coking temperature
For 950 DEG C, scorch time are 16 hours, raw gas, the tar for overflowing are collected, while obtaining coke；
Using the isolated raw gas of common process and tar, the amount of the raw gas for obtaining is 356.5Nm3/t
Moulded coal, the amount of the tar is 18.2kg/t moulded coals, and the amount of the coke is 520.8kg/t moulded coals.
Solids carbon content in wherein described coke is not less than 47%, and volatile matter content is not more than 3%, coke
Particle diameter is the 40% of coke gross mass in the particle gross mass of more than 40mm after screening, and particle diameter is in 25mm
Particle gross mass above is the 60% of coke gross mass.
Embodiment 4
The moulding process of the low-order coal described in the present embodiment, comprises the following steps：
(1) treatment is dried to lignite under 107 DEG C of oxygen free condition, until the lignite contains
Water reaches 17wt%；The G values of institute's lignite be 30, volatile matter content be 40% and dry before granularity
No more than 6mm；
(2) lignite after to be dried is cooled to 30 DEG C afterwards, with binding agent is in mass ratio 7: 3 by it
Ratio mix to form mixture, then the mixture is placed in hydraulic press, the pressurize under 15MPa
1.5min obtains final product the moulded coal of rectangular-shape；The binding agent is the asphalt that softening point is 120 DEG C,
It is weightless for 40% in 850 DEG C of destructive distillation completely cut off under air conditionses.
Coking treatment will be carried out in moulded coal raw material push-in coke oven obtained in the present embodiment, control coking temperature
For 950 DEG C, scorch time are 16 hours, raw gas, the tar for overflowing are collected, while obtaining coke；
Using the isolated raw gas of common process and tar, the amount of the raw gas for obtaining is 345.1Nm3/t
Moulded coal, the amount of the tar is 29.6kg/t moulded coals, and the amount of the coke is 527.5kg/t moulded coals.
Solids carbon content in wherein described coke is not less than 55%, and volatile matter content is not more than 3%, coke
Particle diameter is the 60% of coke gross mass in the particle gross mass of more than 40mm after screening, and particle diameter is in 25mm
Particle gross mass above is the 80% of coke gross mass.
Embodiment 5
The moulding process of the low-order coal described in the present embodiment, comprises the following steps：
(1) treatment is dried to lignite under 110 DEG C of oxygen free condition, until the lignite contains
Water reaches 16wt%；The G values of the lignite be 35, volatile matter content be 50% and dry before grain
Degree is no more than 6mm；
(2) lignite after to be dried is cooled to 30 DEG C afterwards, with binding agent is in mass ratio 4: 1 by it
Ratio it is well mixed form mixture, then the mixture is placed in hydraulic press, under 22.5MPa
Pressurize 0.5min obtains final product the moulded coal of rectangular-shape；The binding agent is the coal tar pitch that softening point is 105 DEG C,
It is weightless for 46% in 850 DEG C of destructive distillation completely cut off under air conditionses.
Coking treatment will be carried out in moulded coal raw material push-in coke oven obtained in the present embodiment, control coking temperature
For 950 DEG C, scorch time are 16 hours, raw gas, the tar for overflowing are collected, while obtaining coke；
Using the isolated raw gas of common process and tar, the amount of the raw gas for obtaining is 341.3Nm3/t
Moulded coal, the amount of the tar is 44.34kg/t moulded coals, and the amount of the coke is 532.7kg/t moulded coals.
Solids carbon content in wherein described coke is not less than 60%, and volatile matter content is not more than 3%, coke
Particle diameter is the 75% of coke gross mass in the particle gross mass of more than 40mm after screening, and particle diameter is in 25mm
Particle gross mass above is the 85% of coke gross mass.
Embodiment 6
The moulding process of the low-order coal described in the present embodiment, comprises the following steps：
(1) treatment is dried to lignite under 110 DEG C of oxygen free condition, until the lignite contains
Water reaches 15wt%；The G values of the lignite be 20, volatile matter content be 50% and dry before grain
Degree is no more than 6mm；
(2) lignite after to be dried is cooled to 30 DEG C afterwards, with binding agent is in mass ratio 7: 3 by it
Ratio it is well mixed form mixture, then the mixture is placed in hydraulic press, protected under 25MPa
Pressure 1min obtains final product the moulded coal of rectangular-shape；The binding agent is the coal tar pitch that softening point is 120 DEG C, its
It is weightless for 40% in 850 DEG C of destructive distillation completely cut off under air conditionses.
Coking treatment will be carried out in moulded coal raw material push-in coke oven obtained in the present embodiment, control coking temperature
For 950 DEG C, scorch time are 16 hours, raw gas, the tar for overflowing are collected, while obtaining coke；
Using the isolated raw gas of common process and tar, the amount of the raw gas for obtaining is 341.3Nm3/t
Moulded coal, the amount of the tar is 44.34kg/t moulded coals, and the amount of the coke is 532.7kg/t moulded coals.
Solids carbon content in wherein described coke is not less than 60%, and volatile matter content is not more than 3%, coke
Particle diameter is the 85% of coke gross mass in the particle gross mass of more than 40mm after screening, and particle diameter is in 25mm
Particle gross mass above is the 95% of coke gross mass.
Embodiment 7
The moulding process of the low-order coal described in the present embodiment, comprises the following steps：
(1) treatment is dried to lignite under 110 DEG C of oxygen free condition, until the lignite contains
Water reaches 15wt%；The G values of the lignite be 0, volatile matter content be 60% and dry before grain
Degree is no more than 6mm；
(2) it with binding agent is afterwards 85: 15 by it that the lignite after to be dried is cooled to 30 DEG C in mass ratio
Ratio it is well mixed form mixture, then the mixture is placed in hydraulic press, protected under 30MPa
Pressure 1min obtains final product the moulded coal of rectangular-shape；The binding agent is that softening point is 120 DEG C of coal tar pitch, and tool exists
Destructive distillation under 850 DEG C of isolation air conditionses is weightless for 40%.
Coking treatment will be carried out in moulded coal raw material push-in coke oven obtained in the present embodiment, control coking temperature
For 950 DEG C, scorch time are 16 hours, raw gas, the tar for overflowing are collected, while obtaining coke；
Using the isolated raw gas of common process and tar, and crude benzol is further isolated from tar, obtained
The amount of the raw gas for arriving is 341.3Nm3/ t moulded coals, the amount of the tar is 44.34kg/t moulded coals,
The amount of the coke is 532.7kg/t moulded coals.Solids carbon content in wherein described coke is not less than
60%, volatile matter content is not more than 3%, particle gross mass of the particle diameter in more than 40mm after coke screening
It is the 90% of coke gross mass, particle diameter is coke gross mass in the particle gross mass of more than 25mm
97%.
Embodiment 8
The moulding process of the low-order coal described in the present embodiment, comprises the following steps：
(1) treatment is dried to ub-bituminous coal under 110 DEG C of oxygen free condition, until the ub-bituminous coal
Water content reach 19wt%；The G values of the ub-bituminous coal are that 30, volatile matter content is 55% and dries
Preceding granularity is no more than 6mm；
(2) ub-bituminous coal after to be dried is cooled to 35 DEG C and is in mass ratio with binding agent by it afterwards
75: 25 ratio is well mixed to form mixture, then the mixture is placed in hydraulic press, in 20MPa
Lower pressurize 2min obtains final product the moulded coal of rectangular-shape；The binding agent is the coal tar pitch that softening point is 120 DEG C,
It is weightless for 40% in 850 DEG C of destructive distillation completely cut off under air conditionses.
Coking treatment will be carried out in moulded coal raw material push-in coke oven obtained in the present embodiment, control coking temperature
For 950 DEG C, scorch time are 16 hours, raw gas, the tar for overflowing are collected, while obtaining coke；
Using the isolated raw gas of common process and tar, and crude benzol is further isolated from tar, obtained
The amount of the raw gas for arriving is 341.3Nm3/ t moulded coals, the amount of the tar is 44.34kg/t moulded coals,
The amount of the coke is 532.7kg/t moulded coals.Solids carbon content in wherein described coke is not less than
60%, volatile matter content is not more than 3%, particle gross mass of the particle diameter in more than 40mm after coke screening
It is the 90% of coke gross mass, particle diameter is coke gross mass in the particle gross mass of more than 25mm
95%.
Comparative example 1
The moulding process of the low-order coal described in this comparative example, comprises the following steps：
(1) treatment is dried to lignite under 107 DEG C -110 DEG C of oxygen free condition, until described brown
The water content of coal reaches 20wt%；The G values of the lignite are that 0, volatile matter content is 60% and dries
Preceding granularity is no more than 6mm；
(2) lignite after to be dried is naturally cooling to 30 DEG C -40 DEG C and is placed in hydraulic press again afterwards,
Suppressed 3 times under 40MPa, each pressing cycle is 20 seconds, obtains final product the moulded coal of rectangular-shape.
Comparative example 2
The moulding process of the low-order coal described in this comparative example, comprises the following steps：
(1) treatment is dried to lignite under 100 DEG C of oxygen free condition, until the lignite contains
Water reaches 14wt%；The G values of the lignite are that 0, volatile matter content is that 60% and granularity are no more than
6mm；
(2) dried lignite is placed in hydraulic press, is suppressed 3 times under 40MPa, every time compacting
Cycle is 20 seconds；
(3) lump coal after suppressing obtains final product the moulded coal of rectangular-shape through natural cooling.
Experimental example 1
Obtained moulded coal in above-described embodiment and comparative example is entered using YA-100B compression Strength testing machines
Row strength test, as a result as shown in table 1：
The compression strength of moulded coal obtained in the above-described embodiment of table 1 and comparative example
| Embodiment 1 | Embodiment 3 | Embodiment 4 | Embodiment 6 | |
| Compression strength (MPa) | 18 | 20 | 22 | 24 |
| Embodiment 7 | Embodiment 8 | Comparative example 1 | Comparative example 2 | |
| Compression strength (MPa) | 26 | 27 | 12 | 16 |
As it can be seen from table 1 compared with comparative example 1-2, moulded coal obtained in the above embodiment of the present invention
With compression strength higher, illustrate that low-order coal moulding process of the invention is conducive to preparing high-strength
The moulded coal raw material of degree.
Experimental example 2
Stability test is carried out to moulded coal obtained in above-described embodiment and comparative example：Using cutting machine at a high speed
There is fragmentary spark during the moulded coal for cutting comparative example 2, illustrate comparative example 2 be obtained the stability of moulded coal compared with
Difference.And occur without combustion phenomena during moulded coal obtained in high-speed cutting embodiment 1-8, show by this hair
Low-order coal moulded coal is difficult to spontaneous combustion, good security obtained in bright moulding process.
Obviously, above-described embodiment is only intended to clearly illustrate example, and not to embodiment party
The restriction of formula.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other changes in different forms.There is no need and unable to give all of implementation method
With exhaustion.And the obvious change thus extended out or change guarantor still in the invention
Among shield scope.
Claims (9)
1. a kind of moulding process of low-order coal, comprises the following steps：
Drying steps：Treatment is dried to low-order coal under 105-120 DEG C of oxygen free condition, until institute
The water content stated in low-order coal reaches 15-20wt%；
Pressing step：It is in mass ratio by the dried low-order coal and binding agent (90-70):
The ratio of (10-30) mixes to form mixture, using the pressure of 15-30MPa by the mixture pressure
It is made moulded coal.
2. moulding process according to claim 1, it is characterised in that the dried process it
Before, the granularity of the low-order coal is not more than 6mm；The G values of the low-order coal contain less than 40, volatile matter
Amount is more than 40%.
3. moulding process according to claim 1 and 2, it is characterised in that the water content is
15-17wt%.
4. the moulding process according to claim any one of 1-3, it is characterised in that the drying
Temperature in step is 107-110 DEG C.
5. the moulding process according to claim any one of 1-4, it is characterised in that the bonding
Agent is the weightless organic binder bond less than 50% of destructive distillation under conditions of completely cutting off air at 850 DEG C.
6. moulding process according to claim 5, it is characterised in that the organic binder bond is
Asphalitine of the softening point more than 100 DEG C.
7. the moulding process according to claim any one of 1-6, it is characterised in that the mixing
Thing pressurize 0.1-2min under 20-30MPa, is obtained the moulded coal.
8. the moulding process according to claim any one of 1-7, it is characterised in that after the drying
The low-order coal mix with the binding agent before, the dried low-order coal is cooled to
30-40℃。
9. low-order coal moulded coal obtained in the moulding process as described in claim any one of 1-8.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113773869A (en) * | 2021-10-29 | 2021-12-10 | 国网河南省电力公司电力科学研究院 | Coking method based on deep desulfurization in coke oven coking chamber |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1155570A (en) * | 1996-12-11 | 1997-07-30 | 曹锐 | Process for shaped cokes |
| CN1826399A (en) * | 2003-07-18 | 2006-08-30 | 株式会社K·E·M | Method for dewatering water-containing coal |
| CN102719264A (en) * | 2011-03-29 | 2012-10-10 | 鞍钢股份有限公司 | High-reactivity coke and production method thereof |
| CN102965170A (en) * | 2012-11-30 | 2013-03-13 | 山东天力干燥股份有限公司 | Energy-saving environment-friendly lignite briquette preparation technology and system |
| CN104327873A (en) * | 2014-09-16 | 2015-02-04 | 北京三聚环保新材料股份有限公司 | Raw material for increasing quality of low-rank coal by present tamping coke oven |
| CN104593029A (en) * | 2005-05-13 | 2015-05-06 | 新日铁住金株式会社 | Method of Production of Blast Furnace Coke |
-
2015
- 2015-12-30 CN CN201511020879.7A patent/CN106929063B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1155570A (en) * | 1996-12-11 | 1997-07-30 | 曹锐 | Process for shaped cokes |
| CN1826399A (en) * | 2003-07-18 | 2006-08-30 | 株式会社K·E·M | Method for dewatering water-containing coal |
| CN104593029A (en) * | 2005-05-13 | 2015-05-06 | 新日铁住金株式会社 | Method of Production of Blast Furnace Coke |
| CN102719264A (en) * | 2011-03-29 | 2012-10-10 | 鞍钢股份有限公司 | High-reactivity coke and production method thereof |
| CN102965170A (en) * | 2012-11-30 | 2013-03-13 | 山东天力干燥股份有限公司 | Energy-saving environment-friendly lignite briquette preparation technology and system |
| CN104327873A (en) * | 2014-09-16 | 2015-02-04 | 北京三聚环保新材料股份有限公司 | Raw material for increasing quality of low-rank coal by present tamping coke oven |
Non-Patent Citations (1)
| Title |
|---|
| 动力煤燃前加工: "《动力煤燃前加工》", 31 August 2007 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113773869A (en) * | 2021-10-29 | 2021-12-10 | 国网河南省电力公司电力科学研究院 | Coking method based on deep desulfurization in coke oven coking chamber |
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Address after: 100080 9th floor, Dahang Jiye building, No.1 building, 33 Renmin North Road, Haidian District, Beijing Patentee after: Beijing Haixin Energy Technology Co.,Ltd. Address before: 100080, Beijing, Haidian District people's Congress Road 33, the big line foundation building 9 floor Patentee before: BEIJING SANJU ENVIRONMENTAL PROTECTION & NEW MATERIALS Co.,Ltd. |