CN110358556A - A kind of raw coal cracking energy comprehensive utilization system - Google Patents
A kind of raw coal cracking energy comprehensive utilization system Download PDFInfo
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- CN110358556A CN110358556A CN201910677092.XA CN201910677092A CN110358556A CN 110358556 A CN110358556 A CN 110358556A CN 201910677092 A CN201910677092 A CN 201910677092A CN 110358556 A CN110358556 A CN 110358556A
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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
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
-
- 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
-
- 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
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
- C10L5/00—Solid fuels
- C10L5/02—Solid fuels such as briquettes consisting mainly of carbonaceous materials of mineral or non-mineral origin
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The present invention provides a kind of raw coal cracking sub-prime and utilizes energy comprehensive utilization system.The raw coal cracks energy comprehensive utilization system, including coal yard, the coal yard are connected with screening, retort, gas-liquid separator, indirect cooler, electrical tar precipitator, cooling tower, desulfurizing tower, desulfurization coal gas and generator compartment in turn.Raw coal cracking energy comprehensive utilization system provided by the invention has the thermal efficiency high, production capacity is big, to feed coal strong applicability, tar yield is high, Filter Tuber For Clean Coal produced is high containing charcoal, the coal tar of production, light oil is more, gas yield is big, low energy consumption, fine coal is utilized, it will not result in waste of resources, fine coal, which crushes, simultaneously adds tackifier compound and balling-up technology, make full use of coal resources, avoid original coal dust, burnt dirt uncontrollable discharge causes seriously pollution and the wasting of resources, social benefit is significant, coal briquette made of low-temperature carbonization retort gas and coal-tar residue, which can be sent to power generation workshop, makees fuel, pernicious gas is prevented with the volatilization of vapor.
Description
Technical field
The present invention relates to the fields of raw coal cracking more particularly to a kind of raw coal to crack energy comprehensive utilization system.
Background technique
Cracking is also known as cracking and refers to that organic compound is thermally decomposed the product different with condensation generation relative molecular mass
Process.Cracking is alternatively referred to as thermal cracking or pyrolysis.According to whether catalyst is used, thermal cracking and catalytic cracking can be divided into；According to
Existing medium, and can be divided into and be hydrocracked, autothermic cracking, ammonification cracking and steamed cracking etc..
Raw coal usually forms the products such as tar, semicoke, coal gas into Pintsch process excessively, existing to carry out cracking system to raw coal,
Low to the utilization rate of raw coal, using energy source is high, and the feature of environmental protection is poor.
Therefore, it is necessary to provide a kind of raw coal cracking energy comprehensive utilization system solution above-mentioned technical problem.
Summary of the invention
The present invention provides a kind of raw coal cracking energy comprehensive utilization system, solve it is existing cracking system is carried out to raw coal,
Low to the utilization rate of raw coal, using energy source is high, and the problem of feature of environmental protection difference.
In order to solve the above technical problems, raw coal provided by the invention cracks energy comprehensive utilization system, including coal yard, institute
Coal yard is stated to be connected with screening plant in turn, retort, gas-liquid separator, indirect cooler, electrical tar precipitator, cooling tower, take off
Sulphur tower, desulfurization gas fitting and generator compartment；
For the screening plant for sieving raw coal for lump coal and fine coal, the lump coal after screening is delivered to charing through transport device
Furnace, the fine coal after screening is delivered to retort by transport device after the processing of ingredient ball, and the retort connects
Waste-heat recovery device, the product after the retort charing is delivered to semi-coke screening plant after dry coke quenching process, blue
Semi-coke after the screening of charcoal screening plant is delivered to moulded coal storehouse and coke breeze storehouse through transport device respectively；
The gas-liquid separator, indirect cooler, electrical tar precipitator are respectively connected with clarifying basin, and the clarifying basin connects in coal tar
Between slot and ammonia vessel, ammonia vessel is sequentially connected ammonia still and comprehensive waste water treating apparatus；
The desulfurizing tower is sequentially connected regenerator and sulfur melting kettle.
The control method of the raw coal cracking energy comprehensive utilization system includes the following steps:
S1: being delivered to screening plant by conveyer belt for the raw coal in coal yard, is sieved raw coal for lump coal by screening plant
And fine coal；
S2: being fed directly to retort for lump coal and crack, and fine coal enters automatic doser through matching by broken crusher machine
Fine coal kneading and compacting is spherical coal by material, after being dried, is input to retort and is cracked；
S3: cooled down by dry coke quenching method to the moulded coal coke after retort Pintsch process, then connected by scraper plate coke extractor
Continuous discharge, and screening system is delivered to by high temperature resistant belt feeder, sieve and store respectively；
S4: the raw coke oven gas that raw coal generates after retort cracks passes sequentially through gas-liquid separator, indirect cooler by burnt tracheae
And electrical tar precipitator, clarifying basin is entered to by ammonium hydroxide, tar and tar slag that gas-liquid separator separates go out, carries out clarification point
From wherein isolated ammonium hydroxide enters hydrogen sink on a small quantity, remaining by water pump is delivered to ammonia still, and it is comprehensive that distilled ammonia wastewater imports waste water
Treating stations recycling tar and further purification are closed, coal tar is delivered to tar slot by tar pump and stores, coal-tar residue coal blending system
At coal briquette；
S5: it is delivered to retort into air blower pressurization, a part is crossed by electrical tar precipitator treated raw gas and is melted down
Charcoal is burnt, and remaining raw gas is passed into cooling tower and cooled down, and is then passed to desulfurizing tower and is contacted with the doctor solution of inside and is taken off
Then doctor solution after contacting with coal gas is directed into regenerator by circulating pump, is exported with inside it by air compressor by sulphur
Compressed air cocurrent, doctor solution after reacted regeneration is by the spray equipment of pipeline to desulfurization tower top, wherein generating
Sulphur foam by foam pump pressurize after send to continuous sulfur melting kettle generate sulphur；
S6: the coal gas that will fall off have air blower be delivered to power generation workshop make fuel gas.
Preferably, fine coal is raw coal of the partial size less than 10 millimeters in the S1, and lump coal is partial size 30-80 millimeters of raw coal,
Retort is divided into empty stomach type internal thermal upright furnace retort and horizontal retort in the S2.
Preferably, fine coal through crusher is crushed to partial size less than 3 millimeters in the S2, and the wherein fine coal less than 3 millimeters
Account for 90% or more.
Preferably, 500 DEG C of charring type coal tar is cooled to by 100 DEG C, and this by dry coke quenching method twice in the S3
Water jacket sealing means are used in the process.
Preferably, the S3 screening system is divided into after moulded coal coke vibrosieve more than or equal to 5mm grade lustration type coal tar
Be less than or equal to 5mm grade clean moulded coal coke powder.
Preferably, retort is internally provided with residual neat recovering system in the S2, and residual neat recovering system includes heat exchanger,
The heat exchanger is used to carry out recycling and reusing to the waste heat of the Filter Tuber For Clean Coal generated in raw coal cracking process.
Preferably, coal tar is firstly transferred to coal tar medial launder and is stored in the S4, when medial launder volume is inadequate
When, the storage of coal tar oil groove is transported to by tar pump.
Preferably, raw gas by the bottom of desulfurizing tower is passed through the doctor solution to get off with desulfurizing tower top spray in the S5
Counter current contacting.
Preferably, into the ammonium hydroxide of ammonia still, condensing gas enters desulfurizing tower after adding alkali ammonia still process in the S4, and condensate liquid returns
It flow to ammonia still.
Compared with the relevant technologies, raw coal cracking energy comprehensive utilization system provided by the invention has following beneficial to effect
Fruit:
The present invention provides a kind of raw coal cracking energy comprehensive utilization system, is separated by sieving raw coal for lump coal and fine coal
Cracking, greatly improves the utilization rate of raw coal, and bulky grain diameter coal is cracked and handled, and wherein the thermal efficiency is high, production capacity is big, right
Feed coal strong applicability, tar yield are high, good product quality, and high, grindability can good, the coal of production containing charcoal for Filter Tuber For Clean Coal produced
Tar, light oil is more, and gas yield is big, and low energy consumption, and environment protecting is good, utilizes to fine coal, will not result in waste of resources, together
When fine coal crush plus tackifier compound and balling-up technology, make full use of coal resources, avoid original coal dust, burnt dirt uncontrollable discharge
Seriously pollution and the wasting of resources are caused, social benefit is significant, and coal briquette enters retort and is uniformly distributed from top to bottom, with heating air-flow
Antikinesis is stepped up through dryer section temperature, final to carbonize the control of section temperature at 650~700 DEG C, realizes low temperature drying, full
Foot semicoke manufacturing condition, coal briquette made of low-temperature carbonization retort gas and coal-tar residue, which can be sent to power generation workshop, to be made
Fuel to defeated coal, is screened coal, is crushed and sieved burnt system using totally-enclosed operation, avoids original coal dust, burnt dirt uncontrollable discharge is made
At serious pollution and the wasting of resources, pansclerosis processing is carried out to production site, it is therefore prevented that the pollution to underground water is put out using dry method
Coke has prevented pernicious gas with the volatilization of vapor, and coking wastewater enters composite wastewater treating stations, comprehensive benefit after wastewater treatment
With having saved the energy, production process is stripped of the harmful elements such as most of sulphur, nitrogen in feed coal, can make the comprehensive combustion of low-order coal
It burns efficiency and improves 46.94% or more, year saves 100,000 tons of coal of mark, is equivalent to 2.6 ten thousand tons of year emission reduction dust, sulfur dioxide
1720 tons, 260,000 tons of carbon dioxide packing or more, environmental benefit, economic benefit, social benefit are significant, in energy-saving and emission-reduction.
Detailed description of the invention
Fig. 1 is a kind of structural representation for preferred embodiment that raw coal provided by the invention cracks energy comprehensive utilization system
Figure；
Fig. 2 is the control method step schematic diagram that raw coal provided by the invention cracks energy comprehensive utilization system；
Fig. 3 is the structural schematic diagram for the semi-coke classified screening device that raw coal provided by the invention cracks energy comprehensive utilization system；
Fig. 4 is the structural schematic diagram of outside shown in Fig. 3；
Fig. 5 is the portion Aa shown in Fig. 3 enlarged diagram.
Detailed description of the invention；1hc, semi-coke classified screening device, 1a, screen box, 2a, feeding inlet, 3a, screening plant, 31a, branch
Fagging, 32a, the first sliding shoe, 33a, filter screen, 34a, screen holes, 35a, sloping baffle, 36a, auxiliary stock guide, 4a, discharging
Device, 41a, discharge port, 42a, auxiliary frame, 43a, the second sliding shoe, 5a, auxiliary discharge nozzle, 6a, attachment device, 61a, fixation
Connecting rod, 62a, auxiliary movable plate, 63a, shifting axle, 7a, driving device, 71a, mounting rack, 73a, 72a, driving motor turn
84a, disk, 74a, rotation axis, 75a, driver plate, 8a, support device, 81a, support frame, 82a, supporting leg, 83a, buffer bar delay
Rush spring, 85a, rubber cushion blocks.
Specific embodiment
The invention will be further described with embodiment with reference to the accompanying drawing.
Please refer to Fig. 1-5, wherein Fig. 1 is one kind that raw coal provided by the invention cracks energy comprehensive utilization system
The structural schematic diagram of preferred embodiment；Fig. 2 is the control method step that raw coal provided by the invention cracks energy comprehensive utilization system
Rapid schematic diagram；Fig. 3 is that the structure for the semi-coke classified screening device that raw coal provided by the invention cracks energy comprehensive utilization system is shown
It is intended to；Fig. 4 is the structural schematic diagram of outside shown in Fig. 3；Fig. 5 is the portion Aa shown in Fig. 3 enlarged diagram, including coal yard,
The coal yard be connected in turn screening plant, retort, gas-liquid separator, indirect cooler, electrical tar precipitator, cooling tower,
Desulfurizing tower, desulfurization gas fitting and generator compartment；
For the screening plant for sieving raw coal for lump coal and fine coal, the lump coal after screening is delivered to charing through transport device
Furnace, the fine coal after screening is delivered to retort by transport device after the processing of ingredient ball, and the retort connects
Waste-heat recovery device, the product after the retort charing is delivered to semi-coke screening plant after dry coke quenching process, blue
Semi-coke after the screening of charcoal screening plant is delivered to moulded coal storehouse and coke breeze storehouse through transport device respectively；
The gas-liquid separator, indirect cooler, electrical tar precipitator are respectively connected with clarifying basin, and the clarifying basin connects in coal tar
Between slot and ammonia vessel, ammonia vessel is sequentially connected ammonia still and comprehensive waste water treating apparatus；
The desulfurizing tower is sequentially connected regenerator and sulfur melting kettle.
The control method of the raw coal cracking energy comprehensive utilization system includes the following steps:
S1: being delivered to screening plant by conveyer belt for the raw coal in coal yard, is sieved raw coal for lump coal by screening plant
And fine coal；
S2: being fed directly to retort for lump coal and crack, and fine coal enters automatic doser through matching by broken crusher machine
Fine coal kneading and compacting is spherical coal by material, and crusher is internally provided with dust pelletizing system, after being dried, is input to retort progress
Cracking, raw coal are delivered to inside the coal slot at the top of cracking retort, are then put coal cock and auxiliary coal bin is packed into carbonization chamber
Inside, raw coal is moved to carbonization chamber from top to bottom and is sent into the high-temperature gas counter current contacting of carbonization chamber with combustion chamber, in carbonization chamber
Coal briquette heating charcoal is turned to moulded coal coke by middle part, and wherein the charing section in the middle part of carbonization chamber, moulded coal are heated to 600 ~ 650 by this section
℃；
S3: cooled down by dry coke quenching method to the moulded coal coke after retort Pintsch process, Dry Quenching component includes water jacket
Interlayer storehouse carries out first time cooling to the moulded coal coke of high temperature by cool circulation water and high pressure spray fog, at this time by 500 DEG C of moulded coal
Coke is down to about 200 DEG C, further walks cooling subsequently into the band direct cooling device of SAPMAC method low-temperature flue gas, makes charring type coal tar temperature
100 DEG C are down to, the water jacket samdwich storehouse uses water jacket sealing means, is then continuously discharged by scraper plate coke extractor, and by resistance to
High temperature belt feeder is delivered to screening system, sieve and store respectively, and high temperature resistant belt feeder is minimum to bear 800 DEG C；
S4: the raw coke oven gas that raw coal generates after retort cracks passes sequentially through gas-liquid separator, indirect cooler by burnt tracheae
And electrical tar precipitator, clarifying basin is entered to by ammonium hydroxide, tar and tar slag that gas-liquid separator separates go out, carries out clarification point
From wherein isolated ammonium hydroxide enters hydrogen sink on a small quantity, remaining by water pump is delivered to ammonia still, and it is comprehensive that distilled ammonia wastewater imports waste water
Treating stations recycling tar and further purification are closed, coal tar is delivered to tar slot by tar pump and stores, coal-tar residue coal blending system
At coal briquette；
S5: it is delivered to retort into air blower pressurization, a part is crossed by electrical tar precipitator treated raw gas and is melted down
Charcoal is burnt, and remaining raw gas is passed into cooling tower and cooled down, and is then passed to desulfurizing tower and is contacted with the doctor solution of inside and is taken off
Then doctor solution after contacting with coal gas is directed into regenerator by circulating pump, is exported with inside it by air compressor by sulphur
Compressed air cocurrent, doctor solution after reacted regeneration is by the spray equipment of pipeline to desulfurization tower top, wherein generating
Sulphur foam by foam pump pressurize after send to continuous sulfur melting kettle generate sulphur, sweetening process by coal gas enter desulfurizing tower lower part with
After the doctor solution counter current contacting that tower top drenches, the acidic components such as HS in coal gas enter liquid phase by gas phase and react with ammonia, conversion
It is converted into elementary sulfur for acid ammonium salts such as ammonium hydro sulfides, then in air under the oxidation of oxygen, total sulfur is less than in the coal gas after washing
200mg/m, purified desulfurization coal gas makees power generation workshop fuel gas and furnace fuel gas is wanted in the catalysis of waste water integrated treatment station, from desulfurization
Absorbed in tower the doctor solution of HS and HCN to solution circulation with ring be pumped to regenerator lower part and air compression station come compressed air
Cocurrent regeneration, the doctor solution after regeneration return to desulfurizing tower top spray and drench desulfurization, and sulphur foam is then drained by enlarged at the top of regenerator
Sulphur foam tank, then given after being pressurizeed by foam pump to continuous sulfur melting kettle and generate sulphur, it is crystallized at sulfur product；
S6: the coal gas that will fall off have air blower be delivered to power generation workshop make fuel gas.
Fine coal is raw coal of the partial size less than 10 millimeters, the raw coal that lump coal is partial size 30-80 millimeters in the S1.
Retort is divided into empty stomach type internal thermal upright furnace retort and horizontal retort in the S2, and lump coal uses interior heat
The processing of formula upright furnace retort, fine coal are handled using horizontal retort.
Fine coal is crushed to partial size less than 3 millimeters through crusher in the S2, and wherein the fine coal less than 3 millimeters account for 90% with
On.
In the S3 500 DEG C of charring type coal tar is cooled to 100 DEG C by dry coke quenching method twice, and is adopted during this
With water jacket sealing means.
The S3 screening system is divided into after moulded coal coke vibrosieve more than or equal to 5mm grade lustration type coal tar and is less than
Equal to 5mm grade clean moulded coal coke powder, screening system is set using mechanization enclosed conveying, screening, clean moulded coal coking coal trans-shipment point
In respect of dustproof dust-collecting equipment, sealing-tape machine is respectively provided with vestibule, and sets wind-proof dust-suppression net, silo is set to lustration type coal dust, to prevent dust
Pollution, screening system are internally provided with dust pelletizing system.
Retort is internally provided with residual neat recovering system in the S2, and residual neat recovering system includes heat exchanger, described to change
Hot device is used to carry out recycling and reusing to the waste heat of the Filter Tuber For Clean Coal generated in raw coal cracking process.
Coal tar is firstly transferred to coal tar medial launder and is stored in the S4, when medial launder volume is inadequate, passes through
Tar pump is transported to the storage of coal tar oil groove.
Raw gas is passed through the doctor solution adverse current got off with desulfurizing tower top spray by the bottom of desulfurizing tower and connect in the S5
Touching.
Into the ammonium hydroxide of ammonia still, condensing gas enters desulfurizing tower after adding alkali ammonia still process in the S4, and condensate liquid is back to ammonia still process
Tower.
Semi-coke classified screening device 1hc includes screen box, feeding inlet, screening plant, discharging device, auxiliary discharge nozzle, connects
Connection device, driving device and support device, and semi-coke classified screening device 1hc is provided with the screening knot of multiple groups different size
Structure, screening plant altogether there are three, and the screen holes on three screening plants are sequentially reduced from top to bottom, and discharging device shares three
It is a, and three discharging devices are mutually adapted with three screening plants respectively, can semi-coke particles to three kinds of different sizes into
The screening and classification of row simultaneously, the various sizes of semi-coke after screening can be used for different processing and use；
Screen box 1a；Feeding inlet 2a, feeding inlet 2a are set to the top of screen box 1a；Screening plant 3a, the one of screening plant 3a
The side of the inner wall of screen box 1a is fixed in side；The side that discharging device 4a, discharging device 4a are set to screen box 1a is located at sieve
The side of screening device 3a；Discharge nozzle 5a, auxiliary discharge nozzle 5a is assisted to be set to the bottom of screen box 1a；Attachment device 6a, connection
The side of screening plant 3a is fixed in the side of device 6a；Screen box 1a is fixed in driving device 7a, the side of driving device 7a
Side；The bottom of screen box 1a is fixed at the top of support device 8a, support device 8a.
Screening plant 3a includes support plate 31a, and the inner surface of support plate 31a slidably connects the first sliding shoe 32a, and first
The side of sliding shoe 32a is fixedly connected with filter screen 33a, and screen holes 34a, the top of screen holes 34a are offered on filter screen 33a
For the structure of arc, the two sides at the top of filter screen 33a are fixedly connected with sloping baffle, and are provided at the top of filter screen 33a
Multiple auxiliary stock guides, support plate 31a is fixed on the side of screen box 1a inner wall, and the side of filter screen 33a passes through first
Sliding shoe 32a can horizontally slip on support plate 31a, and filter screen 33a is tilted to the right downwards, so that filter screen 33a exists
It drives the semi-coke of screening to shake to the right when sliding and under the collective effect of gravity and enters the inside of discharging device 4a, top is arc
The screen holes 34a of shape, and the inside of screen holes 34a is trapezoidal structure, and the bottom width of trapezium structure is greater than the width at top
Degree improves the quality of screening, while the sloping baffle of two sides so that the semi-coke of screening be avoided to be blocked in the inside of screen holes 34a
Slope inwardly, prevents semi-coke raw material to be scattered when shaking, to improve the stability of the screening process of semi-coke, improve the matter of screening
Amount, auxiliary stock guide are tilted to the right installation, and assist stock guide not and influence the normal screening of screen holes 34a, while inclined
Undivided semi-coke can be lifted certain height by auxiliary stock guide, thus the vibration above and below generating and will be bonded together
Semi-coke separates, and ensures the quality of screening, the quality of screening.
Discharging device 4a includes discharge port 41a, and auxiliary frame 42a, auxiliary frame 42a are fixedly connected at the top of discharge port 41a
Inner surface slidably connect the second sliding shoe 43a, the top of the second sliding shoe 43a is fixedly connected with the bottom of filter screen 33a.
There are three screening plant 3a is total, and the screen holes 34a on three screening plant 3a is sequentially reduced from top to bottom, out
There are three expecting device 4a altogether, and three discharging device 4a are mutually adapted with three screening plant 3a respectively, the screening of the top
Screen holes 34a on device 3a can maintain the semi-coke aniseed between 50mm ~ 80mm on first screening plant 3a, and small
It can fall on second screening plant 3a in the semi-coke particles of 50mm and be screened again, second screening plant 3a can be with
Material in semi-coke between 30mm ~ 50mm is maintained on second screening plant 3a, and the semi-coke particles less than 30mm can be fallen
It is screened again on to third screening plant 3a, third screening plant 3a can be small by the semi-coke between 10mm ~ 30mm
Material maintains on third screening plant 3a, and the semi-coke focal plane less than 10mm passes through third screening plant 3a and falls to
It assists on discharge nozzle 5a, the various sizes of semi-coke after screening can be used for different processing and use.
Attachment device 6a include three fixed connecting rod 61a, the hair side of three fixed connecting rod 61a respectively with three mistakes
The side of strainer 33a, and three sides fixed connecting rod 61a are fixedly connected with auxiliary movable plate 62a, assist movable plate 62a
Side be fixedly connected there are two shifting axle 63a, the side of two shifting axle 63a is run through the side of screen box 1a inner wall and is prolonged
Extend to the outside of screen box 1a, attachment device 6a can ensure that three screening plant 3a with synchronizing moving and can be trembled in screening
It is dynamic, ensure the synchronism and adequacy of screening.
Driving device 7a includes mounting rack 71a, and the bottom of mounting rack 71a inner wall is fixedly connected with driving motor 72a, driving
The output end of motor 72a is fixedly connected with turntable 73a, and the side of turntable 73a is fixedly connected with rotation axis 74a, rotation axis 74a's
Surface drive is connected with driver plate 75a, and the outside that the side of driver plate 75a and two shifting axle 63a extend to screen box 1a is solid
Fixed connection, driving motor 72a external power supply and control switch, driving motor 72a can drive turntable 73a is synchronous to turn after opening
Dynamic, turntable 73a drives the left circular motion of rotation axis 74a, and rotation axis 74a drives driver plate 75a or so parallel sliding, and
Driver plate 75a drives two shifting axle 63a synchronous reciprocating movements, and shifting axle 63a passes through movable plate 62a and three connecting rod 61a
Three screening plant 3a of synchronous drive, which are synchronized, to horizontally slip, to ensure the synchronism of screening and the efficiency of screening.
Support device 8a includes support frame 81a and supporting leg 82a, is fixedly connected with buffer bar at the top of supporting leg 82a
83a, the surface of buffer bar 83a are socketed with buffer spring 84a, and the top of buffer bar 83a through support frame 81a bottom and
The inside of support frame 81a is extended to, the two sides of buffer bar 83a are slidably connected by the two sides of sliding axle and support frame 81a inner wall,
And the top of buffer bar 83a extended to inside support frame 81a is fixedly connected with rubber cushion blocks 85a, buffer spring 84a and rubber
The whole stability of screening can be improved in rubber mat block 85a, can effectively reduce the noise that screening installation generates when in use, excellent
The environment for changing semi-coke sizing screening, provides a good working environment for staff.
The working principle of raw coal cracking energy comprehensive utilization system provided by the invention is as follows:
S1: being delivered to screening plant by conveyer belt for the raw coal in coal yard, is sieved raw coal for lump coal by screening plant
And fine coal, the raw coal that 30-80 millimeters of medium sized coal partial size, raw coal of the fine coal less than 10 millimeters；
S2: being fed directly to retort for lump coal and crack, and to be crushed to partial size less than three millimeters and small by crusher for fine coal
90% or more is accounted in 3 millimeters of fine coal, be transported to automatic doser through ingredient by M1 rubber conveyer is by fine coal kneading and compacting
Spherical coal after being dried, is input to retort, raw coal is delivered to inside the coal slot at the top of cracking retort, then through putting coal
Cock and auxiliary coal bin are packed into carbonization chamber, and raw coal is moved to carbonization chamber from top to bottom and is sent into carbonization chamber with combustion chamber
Coal briquette heating charcoal is turned to moulded coal coke in the middle part of carbonization chamber, wherein the charing section in the middle part of carbonization chamber, type by high-temperature gas counter current contacting
Coal is heated to 600 ~ 650 DEG C by this section；
S3: cooled down twice by dry coke quenching method to the moulded coal coke after retort Pintsch process, Dry Quenching component includes
Water jacket samdwich storehouse carries out first time cooling to the moulded coal coke of high temperature by cool circulation water and high pressure spray fog, at this time by 500 DEG C
Moulded coal coke is down to about 200 DEG C, further walks cooling subsequently into the band direct cooling device of SAPMAC method low-temperature flue gas, makes charring type coal tar
Temperature is down to 100 DEG C, and the water jacket samdwich storehouse uses water jacket sealing means, is then continuously discharged by scraper plate coke extractor, and lead to
It crosses high temperature resistant belt feeder and is delivered to screening system, screening system is divided into after moulded coal coke vibrosieve clean more than or equal to 5mm grade
Net moulded coal is burnt and is less than or equal to 5mm grade clean moulded coal coke powder, and stores respectively, screening system using mechanization enclosed conveying,
Screening, clean moulded coal coking coal transhipment point design have dustproof dust-collecting equipment, and sealing-tape machine is respectively provided with vestibule, and sets wind-proof dust-suppression net, right
Lustration type coal dust sets silo, to prevent dust pollution；
S4: the raw coke oven gas that raw coal generates after retort cracks passes sequentially through gas-liquid separator, indirect cooler by burnt tracheae
And electrical tar precipitator, clarifying basin is entered to by ammonium hydroxide, tar and tar slag that gas-liquid separator separates go out, carries out clarification point
From, wherein isolated ammonium hydroxide enters hydrogen sink on a small quantity, remaining by water pump is delivered to ammonia still, enter the ammonium hydroxide of ammonia still through plus
Condensing gas enters desulfurizing tower after alkali ammonia still process, and condensate liquid is back to ammonia still, and it is burnt that distilled ammonia wastewater imports the recycling of waste water integrated treatment station
Oil and further purification, coal tar are delivered to tar slot by tar pump and store, and coal briquette is made in coal-tar residue coal blending, is used as charing
The fuel of furnace；
S5: it is delivered to retort into air blower pressurization, a part is crossed by electrical tar precipitator treated raw gas and is melted down
Charcoal is burnt, and remaining raw gas is passed into cooling tower and cooled down, and is then passed to desulfurizing tower and is contacted with the doctor solution of inside and is taken off
Sulphur, after coal gas is entered the doctor solution counter current contacting that desulfurizing tower lower part is drenched with tower top by sweetening process, the acid such as HS in coal gas
Property component enters liquid phase by gas phase and reacts with ammonia, is converted into the acid ammonium salts such as ammonium hydro sulfide, then lower turn of the oxidation of oxygen in air
Elementary sulfur is turned to, total sulfur is less than 200mg/m in the coal gas after washing, and purified desulfurization coal gas makees power generation workshop fuel gas and gives up
Furnace fuel gas is wanted in the catalysis of water integrated treatment station, and the doctor solution that HS and HCN is absorbed from desulfurizing tower is pumped to solution circulation with ring
The compressed air cocurrent that regenerator lower part and air compression station come regenerates, and it is de- that the doctor solution after regeneration returns to the leaching of desulfurizing tower top spray
Sulphur, sulphur foam then drain into sulphur foam tank by enlarged at the top of regenerator, then are sent after being pressurizeed by foam pump to continuous sulfur melting kettle and produced
Raw sulphur, it is crystallized at sulfur product；
Compared with the relevant technologies, raw coal cracking energy comprehensive utilization system provided by the invention is had the following beneficial effects:
The present invention provides a kind of raw coal cracking energy comprehensive utilization system, is separated by sieving raw coal for lump coal and fine coal
Cracking, greatly improves the utilization rate of raw coal, and bulky grain diameter coal is cracked and handled, and wherein the thermal efficiency is high, production capacity is big, right
Feed coal strong applicability, tar yield are high, good product quality, and high, grindability can good, the coal of production containing charcoal for Filter Tuber For Clean Coal produced
Tar, light oil is more, and gas yield is big, and low energy consumption, and environment protecting is good, and fine coal crushes plus tackifier compound and balling-up technology, sufficiently
Using coal resources, coal briquette enter retort be uniformly distributed from top to bottom, with heating air-flow antikinesis, through dryer section temperature by
Step improves, final to carbonize the control of section temperature at 650~700 DEG C, realizes low temperature drying, meets semicoke manufacturing condition, low
Temperature charing retort gas and coal-tar residue made of coal briquette can send to power generation workshop makees fuel, to defeated coal, screen coal, be crushed and
It sieves burnt system and uses totally-enclosed operation, avoid original coal dust, burnt dirt uncontrollable discharge causes seriously to pollute and the wasting of resources, it is right
Production site carries out pansclerosis processing, it is therefore prevented that the pollution to underground water has been prevented pernicious gas and steamed with water using Dry Quenching
The volatilization of gas, coking wastewater enter composite wastewater treating stations, comprehensively utilize after wastewater treatment, have saved the energy, and production process is de-
In addition to harmful elements such as most of sulphur, nitrogen in feed coal, low-order coal comprehensive combustion efficiency can be made to improve 46.94% or more, year
100,000 tons of coal of mark is saved, 2.6 ten thousand tons of year emission reduction dust, 1720 tons of sulfur dioxide, 260,000 tons of carbon dioxide packing are equivalent to
More than, environmental benefit, economic benefit, social benefit are significant, in energy-saving and emission-reduction.
The above description is only an embodiment of the present invention, is not intended to limit the scope of the invention, all to utilize this hair
Equivalent structure or equivalent flow shift made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant skills
Art field, is included within the scope of the present invention.
Claims (10)
1. a kind of raw coal cracks energy comprehensive utilization system, which is characterized in that including coal yard, the coal yard is connected in turn
Screening plant, retort, gas-liquid separator, indirect cooler, electrical tar precipitator, cooling tower, desulfurizing tower, desulfurization gas fitting with
And generator compartment；
For the screening plant for sieving raw coal for lump coal and fine coal, the lump coal after screening is delivered to charing through transport device
Furnace, the fine coal after screening is delivered to retort by transport device after the processing of ingredient ball, and the retort connects
Waste-heat recovery device, the product after the retort charing is delivered to semi-coke screening plant after dry coke quenching process, blue
Semi-coke after the screening of charcoal screening plant is delivered to moulded coal storehouse and coke breeze storehouse through transport device respectively；
The gas-liquid separator, indirect cooler, electrical tar precipitator are respectively connected with clarifying basin, and the clarifying basin connects in coal tar
Between slot and ammonia vessel, ammonia vessel is sequentially connected ammonia still and comprehensive waste water treating apparatus；
The desulfurizing tower is sequentially connected regenerator and sulfur melting kettle.
2. raw coal according to claim 1 cracks energy comprehensive utilization system, which is characterized in that the raw coal cracks energy
The control method of source utilization system includes the following steps:
S1: being delivered to screening plant by conveyer belt for the raw coal in coal yard, is sieved raw coal for lump coal by screening plant
And fine coal；
S2: being fed directly to retort for lump coal and crack, and fine coal enters automatic doser through matching by broken crusher machine
Fine coal kneading and compacting is spherical coal by material, after being dried, is input to retort and is cracked；
S3: cooled down by dry coke quenching method to the moulded coal coke after retort Pintsch process, then connected by scraper plate coke extractor
Continuous discharge, and screening system is delivered to by high temperature resistant belt feeder, sieve and store respectively；
S4: the raw coke oven gas that raw coal generates after retort cracks passes sequentially through gas-liquid separator, indirect cooler by burnt tracheae
And electrical tar precipitator, clarifying basin is entered to by ammonium hydroxide, tar and tar slag that gas-liquid separator separates go out, carries out clarification point
From wherein isolated ammonium hydroxide enters hydrogen sink on a small quantity, remaining by water pump is delivered to ammonia still, and it is comprehensive that distilled ammonia wastewater imports waste water
Treating stations recycling tar and further purification are closed, coal tar is delivered to tar slot by tar pump and stores, coal-tar residue coal blending system
At coal briquette；
S5: it is delivered to retort into air blower pressurization, a part is crossed by electrical tar precipitator treated raw gas and is melted down
Charcoal is burnt, and remaining raw gas is passed into cooling tower and cooled down, and is then passed to desulfurizing tower and is contacted with the doctor solution of inside and is taken off
Then doctor solution after contacting with coal gas is directed into regenerator by circulating pump, is exported with inside it by air compressor by sulphur
Compressed air cocurrent, doctor solution after reacted regeneration is by the spray equipment of pipeline to desulfurization tower top, wherein generating
Sulphur foam by foam pump pressurize after send to continuous sulfur melting kettle generate sulphur；
S6: the coal gas that will fall off have air blower be delivered to power generation workshop make fuel gas.
3. raw coal according to claim 2 cracks energy comprehensive utilization system, which is characterized in that fine coal is grain in the S1
Raw coal of the diameter less than 10 millimeters, lump coal are partial size 30-80 millimeters of raw coal, and it is straight to be divided into empty stomach type internal heat type for retort in the S2
Vertical furnace retort and horizontal retort.
4. raw coal according to claim 2 cracks energy comprehensive utilization system, which is characterized in that fine coal is through broken in the S2
Broken machine is crushed to partial size less than 3 millimeters, and wherein the fine coal less than 3 millimeters accounts for 90% or more.
5. raw coal according to claim 2 cracks energy comprehensive utilization system, which is characterized in that put out in the S3 by dry
500 DEG C of charring type coal tar is cooled to 100 DEG C by burnt method twice, and water jacket sealing means are used during this.
6. raw coal according to claim 2 cracks energy comprehensive utilization system, which is characterized in that the S3 screening system will
After moulded coal coke vibrosieve, it is divided into more than or equal to 5mm grade lustration type coal tar and is less than or equal to 5mm grade clean moulded coal coke powder.
7. raw coal according to claim 2 cracks energy comprehensive utilization system, which is characterized in that in the S2 in retort
Portion is provided with residual neat recovering system, and residual neat recovering system includes heat exchanger, and the heat exchanger is used for in raw coal cracking process
The waste heat of the Filter Tuber For Clean Coal of generation carries out recycling and reusing.
8. raw coal according to claim 2 cracks energy comprehensive utilization system, which is characterized in that coal tar is first in the S4
It is first delivered to coal tar medial launder to be stored, when medial launder volume is inadequate, coal tar oil groove is transported to by tar pump
Storage.
9. raw coal according to claim 2 cracks energy comprehensive utilization system, which is characterized in that raw gas is logical in the S5
The bottom for crossing desulfurizing tower is passed through the doctor solution counter current contacting got off with desulfurizing tower top spray.
10. raw coal according to claim 2 cracks energy comprehensive utilization system, which is characterized in that enter in the S4 and steam
The ammonium hydroxide of ammonia tower condensing gas after adding alkali ammonia still process enters desulfurizing tower, and condensate liquid is back to ammonia still.
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