CN109504406A - A kind of production technology and tar preparing tar by jet coal coking process - Google Patents
A kind of production technology and tar preparing tar by jet coal coking process Download PDFInfo
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- CN109504406A CN109504406A CN201811482124.2A CN201811482124A CN109504406A CN 109504406 A CN109504406 A CN 109504406A CN 201811482124 A CN201811482124 A CN 201811482124A CN 109504406 A CN109504406 A CN 109504406A
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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
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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
- C10B43/00—Preventing or removing incrustations
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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
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Abstract
The invention discloses a kind of production technologies and tar that tar is prepared by jet coal coking process, it include: that will remove iron containing the Mixture Density Networks for accounting for total weight 45-65% jet coal to be crushed coal-forming grain, it is crushed to partial size < 3mm coal grain accounts for coal grain total volume 90% or more, obtains clean fine coal；After the clean fine coal is consolidated into briquette, it is sent into carbonization chamber, one coking cycles of high-temperature retorting at 950-1050 DEG C, coke and raw coke oven gas is made, the raw coke oven gas is cooled to 78-87 DEG C by ammonium hydroxide sprinkling, cooling raw coke oven gas, tar, ammonium hydroxide and other impurities are obtained, the raw coke oven gas of the cooling is sent into gas-liquid separator separates and obtains raw gas, tar, ammonium hydroxide and other impurities；Mechanizeding ammonia clarifying groove will be sent by standing clarification by the cooling obtained tar, ammonium hydroxide and other impurities and the tar obtained by gas-liquid separator separates, ammonium hydroxide and other impurities, obtain the tar positioned at middle layer.
Description
Technical field
The present invention relates to jet coal coking process more particularly to a kind of productions that tar is prepared by jet coal coking process
Technique and tar.
Background technique
China is coke chemicals production, consumption and big export country, coke chemicals extensively with chemical industry, medical work
Industry, refractory industry and national defense industry, coking industry is rapidly developed in recent years.Coking refers generally to organic substance carbonization and becomes
Burnt process, refers to high-temperature retorting in coal carbonization.Product coke can make the fuel of blast furnace process；It is generated in process of coking
Chemical products extracts the products such as tar, ammonia, naphthalene, hydrogen sulfide, crude benzol by recycling, processing.The product of coking chemistry industry has reached
Hundreds of, Chinese coking chemistry industry can produce more than 100 kinds of chemical products, this centering from coke-stove gas, tar and crude benzol
The national economic development of state has a very important significance.
The appellation of jet coal bituminous coal minimum to degree of coalification in Chinese Coal Classification national standard.Its volatile matter is special
Height, flame is long when burning, therefore and gains the name.The caking property of jet coal is very weak, general noncoking, is mill coal (see coking use
Coal), mainly as power and chemical industry coal.However it is big in China's long flame output of coal, it is cheap, therefore, improve process of coking
The content of middle jet coal can effectively reduce coking cost.
Summary of the invention
The present invention provides a kind of production technology and tar that tar is prepared by jet coal coking process, reaches saving coking
The purpose of cost.
One aspect of the present invention provides a kind of production technology that tar is prepared by jet coal coking process, comprising: will contain
The Mixture Density Networks of total weight 45-65% jet coal are accounted for except iron is crushed coal-forming grain, partial size < 3mm coal grain is crushed to and accounts for coal grain total volume
90% or more, be added account for Mixture Density Networks total weight 10-30% tar slag be uniformly mixed, obtain clean fine coal；By the clean fine coal
After consolidating into briquette, it is sent into carbonization chamber, coke and raw coke oven gas is made in one coking cycles of high-temperature retorting at 950-1050 DEG C,
The raw coke oven gas is cooled to 78-87 DEG C by ammonium hydroxide sprinkling, cooling raw coke oven gas, tar, ammonium hydroxide and other impurities is obtained, by institute
It states cooling raw coke oven gas feeding gas-liquid separator separates and obtains raw gas, tar, ammonium hydroxide and other impurities；It will be obtained by cooling
The tar, ammonium hydroxide and other impurities and given by the tar, ammonium hydroxide and the other impurities that gas-liquid separator separates obtain
Enter mechanizeding ammonia clarifying groove by standing clarification, obtains the tar positioned at middle layer.
In a kind of embodiment, the Mixture Density Networks component and weight percent are as follows: jet coal 45-65%, coking coal 10-
30%, pitch 10-30%.
In a kind of embodiment, the Mixture Density Networks that jet coal is accounted for total weight 45-65% are crushed except iron is crushed coal-forming grain
90% or more of coal grain total volume is accounted for partial size < 3mm coal grain, and the tar slag mixing for accounting for Mixture Density Networks total weight 10-30% is added
Uniformly, comprising: jet coal, coking coal and pitch carry out removing iron for the first time respectively by iron remover；For the first time except the jet coal after iron
It is crushed to partial size < 6mm respectively with pitch；It is carried out second after coking coal and broken jet coal, pitch mixing by iron remover
Except iron；It is crushed to for the second time except coking coal, jet coal and the pitch after iron enter Reversable back-hammering disintegrator to partial size < 3mm
Coal grain accounts for 90% or more of coal grain total volume, and the tar slag that addition accounts for Mixture Density Networks total weight 10-30% is uniformly mixed.
In a kind of embodiment, the clean fine coal is consolidated into briquette, comprising: the clean fine coal is transported by coal transporting trestle
Enter at the top of coke-oven coal tower；The charging car is located at below the coke-oven coal tower, and the coke-oven coal tower is layer-by-layer by shaking batcher
Clean fine coal is sent to charging car；The clean fine coal on charging car is layered by tamping tool to be consolidated, and briquette is obtained；The coke-oven coal
Top of tower is provided with for collecting clean fine coal tamping into the smoke-guiding car of the raw coke oven gas generated during briquette, and the smoke-guiding car will be waste
Coal gas is directed in the adjacent carbonization chamber in the coking cycles middle and later periods.
In a kind of embodiment, the raw coke oven gas is cooled to 78-87 DEG C by ammonium hydroxide sprinkling, obtains cooling waste coal
The raw coke oven gas of the cooling is sent into gas-liquid separator separates and obtains raw gas, tar, ammonia by gas, tar, ammonium hydroxide and other impurities
Water and other impurities, comprising: the raw coke oven gas is passed sequentially through in natural cooling process at the top of carbonization chamber, tedge, bridge tube converge
Enter gas collecting tube；With pressure 0.25-0.35MPa, 75-80 DEG C of temperature of cyclic ammonia water sprinkling at the bridge tube and the gas collecting tube
Cooling, being cooled to raw coke oven gas is 78-87 DEG C；The raw coke oven gas is responsible for along air-breathing enters gas-liquid separator, isolated raw gas,
Tar, ammonium hydroxide and other impurities.
In a kind of embodiment, further includes: isolated raw gas is sent into primary cooler；The raw gas is first
Cooler successively passes through heating water, recirculated water and chilled water heat exchange, and raw gas is made to be cooled to 20-25 DEG C；Raw gas after cooling according to
It is secondary to pressurize by electrical tar precipitator trapping tar droplet and naphthalene through air blower, after crossing desulfurization ammonium and elution benzene process, obtain coal
Gas.
In a kind of embodiment, the tar of the electrical tar precipitator trapping is discharged into electric fishing water sealed tank；The electric fishing
Water sealed tank is rinsed with cyclic ammonia water, obtains electric fishing water seal tank liquor；The electric fishing water sealed tank liquid pump warp let-off supercooling liquid circulation
Enter waste collection slot after slot, forms waste liquid；The waste liquid is pumped to mechanizeding ammonia clarifying groove by standing clarification, obtains in place
Tar in middle layer.
In a kind of embodiment, the mechanizeding ammonia clarifying groove by being followed successively by ammonia after standing clarification from high to low
Water layer, tar layer and tar slag blanket, the tar slag blanket include the tar slag as the Mixture Density Networks component.
In a kind of embodiment, the ammonium hydroxide in the ammonium hydroxide layer is by mechanizeding ammonia clarifying groove top flowing full to circulation
Ammonia vessel, the interior cyclic ammonia water having for cooling down raw coke oven gas of the oil-circulating ammonia water tank.
Another aspect of the present invention provides a kind of tar, is made of production technology described above.
To sum up, production technology through the invention can be improved jet coal specific gravity shared in coking process, to drop
The use cost of raw material in low coking process.Meanwhile the present invention is by deploying the Mixture Density Networks of specific proportion, make Mixture Density Networks have compared with
Good caking property, coking work well, and can greatly improve coking rate.
And during extracting tar, extracting the by-product tar slag that tar obtains can be used for substituting lean coal as Mixture Density Networks
Binder use, further reduced cost of material, and reduce the generation of by-product rubbish；And extracting tar process
In, ammonium hydroxide can be utilized repeatedly as recyclable consumables, improve the utilization rate of consumables, simultaneously, it may also be used for rinse electricity
The tar for catching the trapping of tar device, improves the recovery rate of tar.
Detailed description of the invention
Fig. 1 shows a kind of process for the production technology that tar is prepared by jet coal coking process of the embodiment of the present invention
Figure；
Fig. 2 shows a kind of streams for the production technology that tar is prepared by jet coal coking process of another embodiment of the present invention
Cheng Tu；
Fig. 3 shows a kind of stream for the production technology that tar is prepared by jet coal coking process of another embodiment of the present invention
Cheng Tu；
Fig. 4 shows a kind of production system figure that tar is prepared by jet coal coking process；
Fig. 5 shows the system diagram between oil-circulating ammonia water tank and mechanizeding ammonia clarifying groove.
Specific embodiment
To keep the purpose of the present invention, feature, advantage more obvious and understandable, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, and not all embodiments.Based on the embodiments of the present invention, those skilled in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Fig. 1 shows a kind of process for the production technology that tar is prepared by jet coal coking process of the embodiment of the present invention
Figure.
Referring to Fig. 1, a kind of production technology preparing tar by jet coal coking process is comprised the following steps that
S101, except iron is crushed coal-forming grain, will be crushed to partial size < 3mm containing the Mixture Density Networks for accounting for total weight 45-65% jet coal
Coal grain account for 90% or more of coal grain total volume, be added and account for the tar slag of Mixture Density Networks total weight 10-30% and be uniformly mixed, washed
Cleaned coal.
Include:
Jet coal 45-65kg, coking coal 10-30kg, pitch 10-30kg are weighed, 100kg is added up to.
Jet coal, coking coal and pitch are carried out respectively to remove iron for the first time by iron remover.
Jet coal and pitch after first time to be removed to iron are crushed to partial size < 6mm respectively.
Second, which is carried out, by iron remover after coking coal and broken jet coal, pitch are mixed removes iron.
Partial size < 3mm is crushed to except coking coal, jet coal and the pitch after iron enter Reversable back-hammering disintegrator for the second time
Coal grain accounts for 90% or more of coal grain total volume, and the tar slag that addition accounts for Mixture Density Networks total weight 10-30% is uniformly mixed.
S102 after consolidating clean fine coal at briquette, is sent into carbonization chamber, one coking week of high-temperature retorting at 950-1050 DEG C
Phase, coke and raw coke oven gas is made, raw coke oven gas is cooled to 78-87 DEG C by ammonium hydroxide sprinkling, obtains cooling raw coke oven gas, tar, ammonia
Cooling raw coke oven gas is sent into gas-liquid separator separates and obtains raw gas, tar, ammonium hydroxide and other impurities by water and other impurities.
Include:
Clean fine coal is transported at the top of coke-oven coal tower by coal transporting trestle.
Charging car is located at below coke-oven coal tower, and coke-oven coal tower is successively sent clean fine coal to charging car by shaking batcher.
Clean fine coal on charging car is layered by tamping tool to be consolidated, and briquette is obtained.
The smoke-guiding car for collecting the raw coke oven gas that clean fine coal tamping generates in the process at briquette is provided at the top of coke-oven coal tower,
Raw coke oven gas is directed in the adjacent carbonization chamber in the coking cycles middle and later periods by smoke-guiding car.
It is sent into carbonization chamber, one coking cycles of high-temperature retorting at 950-1050 DEG C of carbonization chamber.
Raw coke oven gas is passed sequentially through in natural cooling process at the top of carbonization chamber, tedge, bridge tube import gas collecting tube.
With pressure 0.25-0.35MPa at bridge tube and gas collecting tube, 75-80 DEG C of temperature of cyclic ammonia water sprays cooling, cooling
It is 78-87 DEG C to raw coke oven gas, obtains cooling raw coke oven gas, tar, ammonium hydroxide and other impurities.
Raw coke oven gas is introduced into gas-liquid separator, isolated raw gas, tar, ammonium hydroxide and other impurities along air-breathing supervisor.
S103 will pass through cooling obtained tar, ammonium hydroxide and other impurities and the coke obtained by gas-liquid separator separates
Oil, ammonium hydroxide and other impurities are sent into mechanizeding ammonia clarifying groove by standing clarification, obtain the tar positioned at middle layer.
Wherein, mechanizeding ammonia clarifying groove by being followed successively by ammonium hydroxide layer, tar layer and tar after standing clarification from high to low
Slag blanket, tar slag blanket include the tar slag as Mixture Density Networks component.Ammonium hydroxide in ammonium hydroxide layer is by mechanizeding ammonia clarifying groove
Portion's flowing full has the cyclic ammonia water for cooling down raw coke oven gas to oil-circulating ammonia water tank, in oil-circulating ammonia water tank.
By above-mentioned production technology, jet coal can be made to be applied to coking process, and can be improved jet coal in coking
Shared specific gravity in technique, to reduce the use cost of raw material in coking process.Meanwhile the present invention is by deploying specific proportion
Mixture Density Networks, make Mixture Density Networks that there is preferable caking property, coking works well, and can greatly improve coking rate, improves coking work
The product yield of skill.And during extracting tar, extracting the by-product tar slag that tar obtains can be used for substituting lean coal conduct
The binder of Mixture Density Networks uses, and further reduced cost of material.
Fig. 2 shows a kind of streams for the production technology that tar is prepared by jet coal coking process of another embodiment of the present invention
Cheng Tu.
Referring to fig. 2, a kind of production technology preparing tar by jet coal coking process, comprises the following steps that
S201, except iron is crushed coal-forming grain, will be crushed to partial size < 3mm containing the Mixture Density Networks for accounting for total weight 45-65% jet coal
Coal grain account for 90% or more of coal grain total volume, obtain clean fine coal.
S202 after consolidating clean fine coal at briquette, is sent into carbonization chamber, one coking week of high-temperature retorting at 950-1050 DEG C
Phase, coke and raw coke oven gas is made, raw coke oven gas is cooled to 78-87 DEG C by ammonium hydroxide sprinkling, obtains cooling raw coke oven gas, tar, ammonia
Cooling raw coke oven gas is sent into gas-liquid separator separates and obtains raw gas, tar, ammonium hydroxide and other impurities by water and other impurities.
S203 will pass through cooling obtained tar, ammonium hydroxide and other impurities and the coke obtained by gas-liquid separator separates
Oil, ammonium hydroxide and other impurities are sent into mechanizeding ammonia clarifying groove by standing clarification, obtain the tar positioned at middle layer.
Isolated raw gas is sent into primary cooler by S204；Raw gas successively passes through heating water, recirculated water in primary cooler
It exchanges heat with chilled water, raw gas is made to be cooled to 20-25 DEG C；Raw gas after cooling successively passes through electrical tar precipitator trapping tar fog
Drop and naphthalene, pressurize through air blower, after crossing desulfurization ammonium and elution benzene process, obtain coal gas.
By above-mentioned production technology, jet coal can be made to be applied to coking process, and can be improved jet coal in coking
Shared specific gravity in technique, to reduce the use cost of raw material in coking process.Meanwhile the present invention is by deploying specific proportion
Mixture Density Networks, make Mixture Density Networks that there is preferable caking property, coking works well, and can greatly improve coking rate, improves coking work
The product yield of skill.And during extracting tar, extracting the by-product tar slag that tar obtains can be used for substituting lean coal conduct
The binder of Mixture Density Networks uses, and further reduced cost of material.Meanwhile also it can make the work by purifying to raw gas
Skill can also be used to produce raw gas, and raw gas can be recycled as a kind of fuel, to reduce making for the production technology
Use cost.
Fig. 3 shows a kind of stream for the production technology that tar is prepared by jet coal coking process of another embodiment of the present invention
Cheng Tu.
Referring to Fig. 3, a kind of production technology preparing tar by jet coal coking process is comprised the following steps that
S301, except iron is crushed coal-forming grain, will be crushed to partial size < 3mm containing the Mixture Density Networks for accounting for total weight 45-65% jet coal
Coal grain account for 90% or more of coal grain total volume, obtain clean fine coal.
S302 after consolidating clean fine coal at briquette, is sent into carbonization chamber, one coking week of high-temperature retorting at 950-1050 DEG C
Phase, coke and raw coke oven gas is made, raw coke oven gas is cooled to 78-87 DEG C by ammonium hydroxide sprinkling, obtains cooling raw coke oven gas, tar, ammonia
Cooling raw coke oven gas is sent into gas-liquid separator separates and obtains raw gas, tar, ammonium hydroxide and other impurities by water and other impurities.
S303 will pass through cooling obtained tar, ammonium hydroxide and other impurities and the coke obtained by gas-liquid separator separates
Oil, ammonium hydroxide and other impurities are sent into mechanizeding ammonia clarifying groove by standing clarification, obtain the tar positioned at middle layer.
Isolated raw gas is sent into primary cooler by S304；Raw gas successively passes through heating water, recirculated water in primary cooler
It exchanges heat with chilled water, raw gas is made to be cooled to 20-25 DEG C；Raw gas after cooling successively passes through electrical tar precipitator trapping tar fog
Drop and naphthalene, pressurize through air blower, after crossing desulfurization ammonium and elution benzene process, obtain coal gas.
The tar of S305, electrical tar precipitator trapping are discharged into electric fishing water sealed tank；Electric fishing water sealed tank is rushed with cyclic ammonia water
It washes, obtains electric fishing water seal tank liquor；Enter waste collection slot after electric fishing water sealed tank liquid pump warp let-off supercooling liquid circulating slot, is formed useless
Liquid；Waste liquid is pumped to mechanizeding ammonia clarifying groove by standing clarification, obtains the tar positioned at middle layer.
By above-mentioned production technology, jet coal can be made to be applied to coking process, and can be improved jet coal in coking
Shared specific gravity in technique, to reduce the use cost of raw material in coking process.Meanwhile the present invention is by deploying specific proportion
Mixture Density Networks, make Mixture Density Networks that there is preferable caking property, coking works well, and can greatly improve coking rate, improves coking work
The product yield of skill.And during extracting tar, extracting the by-product tar slag that tar obtains can be used for substituting lean coal conduct
The binder of Mixture Density Networks uses, and further reduced cost of material.Meanwhile also it can make the work by purifying to raw gas
Skill can also be used to produce raw gas, and raw gas can be recycled as a kind of fuel, to reduce making for the production technology
Use cost.Meanwhile in raw gas preparation process, can further it be recycled by the tar that electrical tar precipitator traps, to make to lead to
The yield for crossing tar made from the technique can further increase.
A kind of tar, any production technology provided by above-described embodiment are made.
Fig. 4 shows a kind of production system figure that tar is prepared by jet coal coking process.Fig. 5 shows cyclic ammonia water
System diagram between slot and mechanizeding ammonia clarifying groove.
Referring to fig. 4 and Fig. 5, the embodiment of the present invention also provide a kind of production system by for above-mentioned production technology.This is
System includes sequentially connected by coalpit, paddle coal feeder, the first belt conveyor, bucket-wheel stacker reclaimer, coal yard, the second belt
Conveyer, precomminution workshop, third belt conveyor, blending bunker, the 4th belt conveyor, iron remover, reversible counterattack hammer are broken
Broken machine, the 5th belt conveyor.Wherein, the second belt conveyor is equipped with iron remover；Discharging is provided on 5th belt conveyor
Device.
The system further includes having coal tower, tamping tool, charging car, the charcoal connecting with the 5th belt conveyor by coal transporting trestle
Change room, tedge, bridge tube, gas collecting tube, tar box, gas-liquid separator, mechanizeding ammonia clarifying groove.
The shake batcher being wherein installed in coal tower lower part.Carbonization chamber be also connected with pusher machine, coke guide, coke quenching cart,
Quenching tower, cool Jiao Tai.Gas collecting tube and bridge tube junction are provided with ammonia water spraying device.Mechanizeding ammonia clarifying groove is connected with circulation
Ammonia vessel, oil-circulating ammonia water tank are connected with cyclic ammonia water pump, and cyclic ammonia water pump is connect with ammonia water spraying device.
Gas collecting tube also passes through air suction bending tube and air intake duct is directly connect with primary cooler.Gas-liquid separator is also connected with air-breathing master
Pipe, air-breathing supervisor equally with connect primary cooler connect.Primary cooler is connected with electrical tar precipitator, electric fishing water sealed tank, electric fishing water sealed tank
Liquid pump, coolant liquid circulating slot, waste collection slot.
Cyclic ammonia water pump is further connected to primary cooler and electrical tar precipitator, and is connected to remaining ammonia by remained ammonia pump
Sink and waste collection slot connect back to mechanizeding ammonia clarifying groove.
In the system use process, the bridge-type screw unloader in recessing is unloaded by automobile, all kinds of coals are discharged by coalpit
In, all kinds of coals are fed into the first belt conveyor by the paddle coal feeder under coalpit.Coal is sent to bucket wheel by the first belt conveyor
On the main belt feeder of stacker-reclaimer, coal yard is entered by bucket-wheel stacker reclaimer heap.When upper coal, coal is successively gone up using different types of coal, by bucket wheel
Stacker-reclaimer takes coal to be given on the second belt conveyor from coal yard.When bucket-wheel stacker reclaimer is overhauled, by bull-dozer by coal
Push-in be arranged in coal yard by coalpit, coal is entered on belt conveyor to second by the reciprocating feeder being located under hole.
Iron remover by the second belt conveyor and thereon send coal to precomminution workshop after removing iron, and the biggish coal of hardness carries out
Different coals is respectively fed to store in respective blending bunker by precrushing, broken coal by third belt conveyor.
Coal is fitted on the 4th belt conveyor under storehouse by the electronics automatic blending scale under blending bunker by corresponding mixing ratio
On, then by the 4th belt conveyor coal is sent into through iron remover except after iron, coal enters Reversable back-hammering disintegrator, is crushed to
After < 3mm accounts for 90% or more, transports through the 5th belt conveyor, unloaded coal by the discharger being arranged on belt conveyor, by
Coal transporting trestle is transported at the top of coke-oven coal tower.
It coalings and reaches below coal tower, shaking batcher by coal tower lower part, uniformly successively feed (when lower coal is obstructed, uses
Air bubble shakes coal) and using tamping tool layering tamping, the briquette smash then is packed into carbonization chamber from pusher side by production plan.
At a temperature of high-temperature retorting of the briquette at 950~1050 DEG C, by the high-temperature retorting refining coke and waste coal of a coking cycles
Gas.
The raw coke oven gas of loss is directed at the adjacent charcoal in the coking middle and later periods by the smoke-guiding car for being located at furnace roof during coalingging
To change in room, the burner smoke for generation of coalingging is sent into the independent ground station for dust removal of coke side through furnace roof after collecting, it is discharged into atmosphere after purified,
Prevent Coal charging flue gas loss.
Mature coke is fallen into coke quenching cart by pusher machine through coke guide grid of coke guide release, extremely by locomotive haulage coke quenching cart
Water spray quenching is carried out in quenching tower.Coke after quenching is unloaded to cool Jiao Tai, it is cooling be sent to after a certain period of time sieve store up burnt process into
Row screening.
The raw coke oven gas generated in retort process imports gas collecting tube through carbonization chamber top, tedge, bridge tube.In bridge tube and gas collection
Ammonia water spraying device spray cycle ammonium hydroxide sprinkling at pipe cools down raw coke oven gas, and raw coke oven gas after cooling is again through air suction bending tube
Primary cooler is pumped to air intake duct.The tar and ammonium hydroxide to cool down in gas collecting tube is through tar box, air-breathing supervisor and through gas-liquid
It send after separator separation to the cold bulging process mechanizeding ammonia clarifying groove of recovery of chemical products device.The rough coal gone out through gas-liquid separator separates
Gas enters primary cooler.
Primary cooler divides three sections of upper, middle and lower, the heating water heat in primary cooler upper section, raw coke oven gas and cooling tube；In primary cooler
Recirculated water exchanges heat in section, raw coke oven gas and cooling tube；Chilled water exchanges heat in primary cooler lower section, raw coke oven gas and cooling tube.Through cooling
Raw coke oven gas afterwards enters electrical tar precipitator, removes tar droplet and naphthalene in coal gas, and the raw coke oven gas after electric fishing enters centrifugation drum
Blower pressurizes, and carries out the processing of raw coke oven gas.
Mechanizeding ammonia clarifying groove is separated into three layers after standing clarification using the different of density, and upper layer is ammonium hydroxide, middle layer
For tar, lower layer is tar slag.Ammonium hydroxide is pumped by mechanizeding ammonia clarifying groove top flowing full to oil-circulating ammonia water tank, then with cyclic ammonia water
Ammonia water spraying device is sent back to cool down raw coke oven gas.
When primary cooler and electrical tar precipitator need to clean, tar is removed from extraction ammonia scrubbing after cyclic ammonia water pump.It washes
Ammonium hydroxide and tar oil-circulating ammonia water after washing are pumped to remained ammonia slot, are pumped to mechanizeding ammonia clarifying groove with remained ammonia.
It is discharged into electric fishing water sealed tank through the tar that electrical tar precipitator traps, is sent by electric fishing water sealed tank submerged pump to upper and lower
Section coolant liquid circulating slot, and waste collection slot is accessed by pipe network, it is periodically clear with pumping machine ammonium hydroxide under waste collection tank liquor
Clear slot clarified separation.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.Moreover, particular features, structures, materials, or characteristics described
It may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, without conflicting with each other, this
The technical staff in field can be by the spy of different embodiments or examples described in this specification and different embodiments or examples
Sign is combined.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or hidden
It include at least one this feature containing ground.In the description of the present invention, the meaning of " plurality " is two or more, unless otherwise
Clear specific restriction.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of production technology for preparing tar by jet coal coking process characterized by comprising
Containing the Mixture Density Networks for accounting for total weight 45-65% jet coal, except iron is crushed coal-forming grain, partial size < 3mm coal grain will be crushed to and accounted for
90% or more of coal grain total volume, the tar slag that addition accounts for Mixture Density Networks total weight 10-30% are uniformly mixed, and obtain clean fine coal；
After the clean fine coal is consolidated into briquette, it is sent into carbonization chamber, one coking cycles of high-temperature retorting at 950-1050 DEG C, system
Coke and raw coke oven gas are obtained, the raw coke oven gas is cooled to 78-87 DEG C by ammonium hydroxide sprinkling, obtains cooling raw coke oven gas, tar, ammonium hydroxide
And other impurities, the raw coke oven gas of the cooling is sent into gas-liquid separator separates obtain raw gas, tar, ammonium hydroxide and other are miscellaneous
Matter；
The cooling obtained tar, ammonium hydroxide and other impurities and the coke obtained by gas-liquid separator separates will be passed through
Oil, ammonium hydroxide and other impurities are sent into mechanizeding ammonia clarifying groove by standing clarification, obtain the tar positioned at middle layer.
2. production technology according to claim 1, which is characterized in that the weight percent of the Mixture Density Networks component are as follows: long
Flame coal 45-65%, coking coal 10-30%, pitch 10-30%.
3. production technology according to claim 2, which is characterized in that jet coal is accounted for the Mixture Density Networks of total weight 45-65%
Except iron is crushed coal-forming grain, it is crushed to partial size < 3mm coal grain accounts for coal grain total volume 90% or more, addition accounts for Mixture Density Networks total weight
The tar slag of 10-30% is uniformly mixed, comprising:
Jet coal, coking coal and pitch carry out removing iron for the first time respectively by iron remover；
Jet coal and pitch after removing iron for the first time are crushed to partial size < 6mm respectively；
Second, which is carried out, by iron remover after coking coal and broken jet coal, pitch mixing removes iron；
Partial size < 3mm coal grain is crushed to except coking coal, jet coal and the pitch after iron enter Reversable back-hammering disintegrator for the second time
90% or more of coal grain total volume is accounted for, the tar slag that addition accounts for Mixture Density Networks total weight 10-30% is uniformly mixed,.
4. production technology according to claim 1, which is characterized in that consolidating the clean fine coal at briquette, comprising:
The clean fine coal is transported at the top of coke-oven coal tower by coal transporting trestle；
Charging car is located at below the coke-oven coal tower, and the coke-oven coal tower is successively sent clean fine coal to coalingging by shake batcher
Vehicle；
The clean fine coal on charging car is layered by tamping tool to be consolidated, and briquette is obtained；
The smoke-guiding car for collecting the raw coke oven gas that clean fine coal tamping generates in the process at briquette is provided at the top of the coke-oven coal tower,
Raw coke oven gas is directed in the adjacent carbonization chamber in the coking cycles middle and later periods by the smoke-guiding car.
5. production technology according to claim 1, which is characterized in that the raw coke oven gas is cooled to 78- by ammonium hydroxide sprinkling
87 DEG C, cooling raw coke oven gas, tar, ammonium hydroxide and other impurities are obtained, the raw coke oven gas of the cooling is sent into gas-liquid separator point
From obtaining raw gas, tar, ammonium hydroxide and other impurities, comprising:
The raw coke oven gas is passed sequentially through in natural cooling process at the top of carbonization chamber, tedge, bridge tube import gas collecting tube；
With pressure 0.25-0.35MPa at the bridge tube and the gas collecting tube, 75-80 DEG C of temperature of cyclic ammonia water, which sprays, to be cooled down,
Cooling raw coke oven gas is to 78-87 DEG C；
The raw coke oven gas enters gas-liquid separator, isolated raw gas, tar, ammonium hydroxide and other impurities along air-breathing supervisor.
6. production technology according to claim 5, which is characterized in that further include:
Isolated raw gas is sent into primary cooler；The raw gas successively passes through heating water, recirculated water and system in primary cooler
Cold water heat exchange, makes raw gas be cooled to 20-25 DEG C；Raw gas after cooling successively pass through electrical tar precipitator trapping tar droplet and
Naphthalene pressurizes through air blower, after crossing desulfurization ammonium and elution benzene process, obtains coal gas.
7. production technology according to claim 6, which is characterized in that the tar of the electrical tar precipitator trapping is discharged into electric fishing
In water sealed tank；
The electric fishing water sealed tank is rinsed with cyclic ammonia water, obtains electric fishing water seal tank liquor；
Enter waste collection slot after the electric fishing water sealed tank liquid pump warp let-off supercooling liquid circulating slot, forms waste liquid；
The waste liquid is pumped to mechanizeding ammonia clarifying groove by standing clarification, obtains the tar positioned at middle layer.
8. production technology according to claim 7, which is characterized in that the mechanizeding ammonia clarifying groove is by standing clarification
It is followed successively by ammonium hydroxide layer, tar layer and tar slag blanket from high to low afterwards, the tar slag blanket includes as the Mixture Density Networks component
Tar slag.
9. production technology according to claim 8, which is characterized in that the ammonium hydroxide in the ammonium hydroxide layer is clear by mechanization ammonium hydroxide
Clear slot top flowing full has the cyclic ammonia water for cooling down raw coke oven gas to oil-circulating ammonia water tank in the oil-circulating ammonia water tank.
10. a kind of tar, which is characterized in that be made of the described in any item production technologies of claim 1-9.
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