CN104152162B - The pyrolysis system of broken coal pyrolysis and broken coal pyrolysis produce semicoke, the device and method of burnt oil and gas - Google Patents
The pyrolysis system of broken coal pyrolysis and broken coal pyrolysis produce semicoke, the device and method of burnt oil and gas Download PDFInfo
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- 238000000197 pyrolysis Methods 0.000 title claims abstract description 256
- 239000003245 coal Substances 0.000 title claims abstract description 150
- 238000000034 method Methods 0.000 title claims abstract description 57
- 239000000463 material Substances 0.000 claims abstract description 53
- 239000002245 particle Substances 0.000 claims abstract description 23
- 239000007787 solid Substances 0.000 claims abstract description 22
- 239000003034 coal gas Substances 0.000 claims abstract description 18
- 238000000746 purification Methods 0.000 claims abstract description 17
- 239000000571 coke Substances 0.000 claims abstract description 15
- 239000007789 gas Substances 0.000 claims description 194
- 239000011269 tar Substances 0.000 claims description 65
- 239000000428 dust Substances 0.000 claims description 58
- 239000000047 product Substances 0.000 claims description 42
- 239000003546 flue gas Substances 0.000 claims description 41
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 40
- 238000010438 heat treatment Methods 0.000 claims description 40
- 238000001816 cooling Methods 0.000 claims description 34
- 239000002918 waste heat Substances 0.000 claims description 22
- 239000000779 smoke Substances 0.000 claims description 21
- 238000011084 recovery Methods 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 16
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- 229910052760 oxygen Inorganic materials 0.000 claims description 13
- 239000001301 oxygen Substances 0.000 claims description 13
- 230000002411 adverse Effects 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims description 10
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- 239000012265 solid product Substances 0.000 claims description 7
- 235000019504 cigarettes Nutrition 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
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- 230000015556 catabolic process Effects 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
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- 239000002817 coal dust Substances 0.000 description 3
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Abstract
The pyrolysis system and the broken coal pyrolysis that the invention discloses the pyrolysis of a kind of broken coal produce semicoke, the device and method of burnt oil and gas.This pyrolysis system includes pyrolysis apparatus, classifier, sub-material storehouse, cyclone separator, little hopper, big hopper and discharge nozzle；Pyrolysis apparatus, sub-material storehouse, little hopper and big hopper are tightly connected, and little hopper and big hopper are connected to the lower section in sub-material storehouse；Classifier is connected to the outlet of pyrolysis apparatus and is arranged in sub-material storehouse；Cyclone separator is arranged in sub-material storehouse, for the pyrolysis gas isolated solid particle that pyrolysis apparatus is discharged and the pyrolysis gas of purification.Described device includes above-mentioned pyrolysis system, uses described method to obtain the productivity height of tar, quality height, and in coal gas, effective ingredient is high and calorific value is high, and semi-coke yield improves, entirety efficiency height, and device can be with long-term operation.
Description
Technical field
The pyrolysis system and the broken coal pyrolysis that the present invention relates to the pyrolysis of a kind of broken coal produce semicoke, burnt oil and gas
Device and method, in particular it relates to a kind of broken coal pyrolysis pyrolysis system, including this pyrolysis system
Broken coal pyrolysis produces semicoke, the device of burnt oil and gas and carries out broken coal pyrolysis production half on the apparatus
The method of oil and gas burnt, burnt.
Background technology
The most domestic the most inexpensively broken coal resource that has, suddenly treats that efficient, clean conversion utilizes, although domestic
Outer correlational study of having carried out works for many years, but does not the most still have a kind of mature technology to be available for utilizing.
At present, broken coal pyrolytic technique, based on solid thermal carriers, uses moving bed or fluidized bed pyrolysis reaction mostly
Device.Being shown by substantial amounts of investigation and analysis, restriction solid thermal carriers broken coal pyrolytic technique realizes work at present
The technical problem underlying of industryization application has 1) how to control and reduce dust growing amount in pyrolysis system, fall
Dust content in low tar, improves system long-term operation performance；2) heat carrier and coal how are realized
Efficient uniform mixes, it is ensured that pyrolysis temperature is uniform, improves pyrolytic tar productivity.
CN101608125B discloses a kind of method for upgrading coal pyrolysis, and the method comprises the following steps: (a)
The feed coal of granularity≤30mm is sent in rotary dryer so that it is contact, directly with hot flue gases flowing
Connect heat exchange；Meanwhile, described feed coal is indirect with the hot semicoke from pyrolysis apparatus in rotary dryer
Heat exchange, thus realize being dried of feed coal；(b) dried feed coal and the high temperature from heating rotary kiln
Send into after semicoke mixing in pyrolysis apparatus, described coal charge and high-temperature semi-coke direct heat transfer concurrent heat solution, generate
Hot semicoke, tar steam and coal gas, final pyrolysis temperature is 500 DEG C-700 DEG C；C heat that () is generated half
A burnt part is delivered to heating rotary kiln and is carried out hyperthermic treatment, remaining hot semicoke deliver to rotary dryer for
With feed coal indirect heat exchange.The deficiency of the method is: the pyrolysis gas heat to be transported to that pyrolytic process produces
Solve in the dust arrester beyond device and carry out dedusting, unavoidably due to the reduction of ambient temperature, in pyrolysis gas
Tar steam condensation, not only affect the unobstructed of pipeline but also make tar yield reduce；Pyrolysis apparatus is moving bed heat
Solve device, it is difficult to ensureing that moisture-free coal uniformly mixes with semicoke heat carrier, unitary device disposal ability is limited, raw
Product efficiency is low；With the direct counter current contacting heat exchange of hot semicoke and feed coal, heat smoke with former in rotary dryer
Material coal also flows contact heat-exchanging to complete being dried and the cooling of hot semicoke, double sleeve rotary dryers of feed coal
Manufacture complicated and wayward when operating；It addition, using self produced gas as the thermal source of system, by height
The coal gas being worth directly is burnt, and reduces the economy of system.
CN103074095A discloses a kind of pyrolysis of coal system, comprising: be dried rotary kiln in order to be dried
Feed coal, it is thus achieved that dried material；Pyrolysis rotary kiln is in order to be pyrolyzed the dried material formed by dry rotary kiln
Obtain hot semicoke；Heating rotary kiln is in order to heat back hot for the Part I formed by pyrolysis rotary kiln semicoke
Stream；Chiller is in order to cool down the hot semicoke of the Part II formed by pyrolysis rotary kiln, it is thus achieved that product semicoke.
The deficiency of the method is: the pyrolysis gas discharged from pyrolysis rotary kiln passes through separation dust therein, just
Enter exhaust treatment system so as to get tar in dust content high, reduce the quality of tar；With certainly
The coal gas of high value, as the thermal source of system, is directly burnt by producing coal gas, reduces the economy of system；
It addition, rotary kiln drying process uses and flows direct contact drying, the baking temperature of coal is relatively low, and this can lead
Causing the increase of semicoke heat carrier consumption, corresponding system load increases.
As can be seen here, it is high to there is dust content in tar product in prior art, the problem of coal gas product waste,
Additionally tar easily condenses in pipeline affects the long period even running of device.In order to produce high-quality Jiao
Oil, and obtain the coal gas product that effective ingredient is high, improve the long-term operation performance of device, it is desirable to reduce
The Dust Capacity produced in broken coal pyrolytic process, carries out effective high-temperature dust removal to pyrolysis gas, simultaneously need to carry
High broken coal produces the method for the efficiency of semicoke, tar and course of gas.
Summary of the invention
The invention aims to overcome drawbacks described above, it is provided that the pyrolysis system of broken coal pyrolysis and broken coal heat
Solve and produce semicoke, the device and method of burnt oil and gas.
In order to realize foregoing invention purpose, the present invention provides the pyrolysis system that a kind of broken coal is pyrolyzed, this pyrolysis
System 1 is provided with moisture-free coal entrance, semicoke heating medium inlet, pyrolysis gas outlet, the outlet of small grain size hot semicoke
Export with big granularity semicoke；Wherein, this pyrolysis system 1 include pyrolysis apparatus 101, classifier 102,
Sub-material storehouse 103, cyclone separator 104, little hopper 105, big hopper 106 and discharge nozzle 107；Pyrolysis
Device 101, sub-material storehouse 103, little hopper 105 and big hopper 106 are tightly connected, and little hopper 105 is with big
Hopper 106 is connected to the lower section in sub-material storehouse 103, and hot semicoke goes out with the small grain size of pyrolysis system 1 respectively
Mouth and the outlet of big granularity hot semicoke connect；Classifier 102 is connected to the outlet of pyrolysis apparatus 101 also
Being arranged in sub-material storehouse 103, the hot semicoke screening for being discharged by pyrolysis apparatus 101 is the hot semicoke of small grain size
Semicoke hot with big granularity, and it is respectively charged into little hopper 105 and big hopper 106；By cyclone separator 104
Be arranged in sub-material storehouse 103, for pyrolysis gas isolated solid particle that pyrolysis apparatus 101 is discharged and
The pyrolysis gas purified, the pyrolysis gas of described purification is discharged from the pyrolysis gas outlet of pyrolysis system 1；By discharging
Pipe 107 connects particle outlet and the little hopper 105 of cyclone separator 104, for by described solid particle
Semicoke hot with small grain size mixes.
The present invention also provides for the pyrolysis of a kind of broken coal and produces semicoke, the device of burnt oil and gas, and this device includes:
Rotary kiln 2, pyrolysis system 1, rotary kiln heater 3, tar recovery system 4 and semicoke cooling
Device 5, wherein, the pyrolysis system of the broken coal pyrolysis that pyrolysis system 1 provides for the present invention；Revolution kiln drying
Dry device 2 is provided with feed coal entrance, moisture-free coal outlet, hot-wind inlet and offgas outlet, pyrolysis system 1
It is provided with moisture-free coal entrance, semicoke heating medium inlet, pyrolysis gas outlet, small grain size hot semicoke outlet and big
The hot semicoke of granularity exports, and rotary kiln heater 3 is provided with high-temperature flue gas entry, heat smoke outlet, big grain
Spending hot semicoke entrance and semicoke heating medium outlet, tar recovery system 4 is provided with pyrolysis gas entrance, coal gas
Outlet and tar outlet, Semi-coke cooling device 5 is provided with small grain size hot semicoke entrance and semicoke outlet；Return
The moisture-free coal outlet of rotary kiln exsiccator 2 is connected with the moisture-free coal entrance of pyrolysis system 1, rotary kiln heater
The semicoke heating medium outlet of 3 is connected with the semicoke heating medium inlet of pyrolysis system 1, the heat of pyrolysis system 1
Outlet of venting one's spleen is connected with the pyrolysis gas entrance of tar recovery system 4, the hot semicoke of small grain size of pyrolysis system 1
Outlet is connected with the hot semicoke entrance of Semi-coke cooling device 5, the big granularity hot semicoke outlet of pyrolysis system 1
It is connected with the hot semicoke entrance of rotary kiln heater 3.
Present invention also offers the pyrolysis of a kind of broken coal and produce semicoke, the method for burnt oil and gas, the method bag
Include: the feed coal that granularity is below 25mm in dry conditions, is dried, is dried by (A)
Coal；(B) under pyrolytic conditions, described moisture-free coal and semicoke heat carrier are directly connect in pyrolysis system 1
Touch and be pyrolyzed, and in described pyrolysis system 1, solid product pyrolysis produced is without any shape
The cooling of formula and directly sieve and obtain the hot semicoke of small grain size, the hot semicoke of big granularity, produce at described solid product
In raw high temperature thermal field, the pyrolysis gas that the gaseous products removing dust that pyrolysis produces is purified；Wherein,
The hot semicoke of described small grain size carries out cooling and obtains semicoke；Described semicoke heat carrier is by by described big granularity warm
Semicoke carries out heating and obtains；(C) under tar recovering condition, the pyrolysis gas of described purification is condensed
Isolated coal gas and tar.
The broken coal pyrolysis that the present invention provides produces semicoke, the burnt pyrolysis system of oil and gas, device and method
In, by being sieved by hot semicoke, only hot for big granularity semicoke is heated as semicoke heat carrier, permissible
Avoid the hot semicoke of small grain size frangible and increase the generation amount of dust；The rotation that pyrolysis gas is arranged in pyrolysis system
Under the effect of wind separator, it is ensured that the high-temperature hot that pyrolysis gas provides at hot semicoke carries out dedusting after the match,
Not only being effectively realized dedusting, the granule reclaimed in pyrolysis gas produces together as semicoke with the hot semicoke of small grain size
Product, improve semi-coke yield；And avoid the tar condensing in pyrolysis gas, it is possible to reduce pipeline is blocked up
Plug, the beneficially long-term operation of device, also improve productivity and the quality of tar product simultaneously.This
In the coal gas product that open-birth is produced, effective ingredient is high and calorific value is high.
Additionally, in the dry run of present invention offer, hot blast is directly contacted with feed coal adverse current, it is possible to
To help to remove the dust in feed coal, it is to avoid bring in thermal decomposition product.In the present invention, by big granularity
The collision that hot semicoke can also reduce hot semicoke by the transfer of mechanical lifting device produces dust, it is possible to reduce half
Dust Capacity in burnt heat carrier, finally can also help to reduce dust in pyrolysis gas, reduce and enter tar product
The Dust Capacity of product, improves the quality of tar product.
On the other hand, the present invention utilizes waste heat boiler and air stove dry run and heating process to be produced
Tail gas or flue gas recycling, hot blast is dried with feed coal counter current contacting, and utilizes the high-temperature hot of hot semicoke
Field ensures pyrolysis gas high-temperature dust removal, it is also possible to effectively improve the overall efficiency of this method and device.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with
Detailed description below is used for explaining the present invention together, but is not intended that limitation of the present invention.?
In accompanying drawing:
Fig. 1 is that the broken coal pyrolysis that the present invention provides produces semicoke, the burnt pyrolysis system of oil and gas, device
And the schematic diagram of method.
Reference
1, pyrolysis system 101, pyrolysis apparatus 102, classifier
103, sub-material storehouse 104, cyclone separator 105, little hopper
106, big hopper 107, discharge nozzle 2, rotary kiln
3, rotary kiln heater 4, tar recovery system 5, Semi-coke cooling device
6, tail gas dust cleaning apparatus 7, waste heat boiler 8, air stove
9, high temperature cyclone separator 10, mechanical lifting device 11, semicoke feed bin
Detailed description of the invention
Hereinafter the detailed description of the invention of the present invention is described in detail.It should be appreciated that this place is retouched
The detailed description of the invention stated is merely to illustrate and explains the present invention, is not limited to the present invention.
The present invention provides the pyrolysis system that a kind of broken coal is pyrolyzed, this pyrolysis system 1 be provided with moisture-free coal entrance,
Semicoke heating medium inlet, pyrolysis gas outlet, the outlet of small grain size hot semicoke and big granularity semicoke outlet；Wherein,
This pyrolysis system 1 includes pyrolysis apparatus 101, classifier 102, sub-material storehouse 103, cyclone separator
104, little hopper 105, big hopper 106 and discharge nozzle 107；Pyrolysis apparatus 101, sub-material storehouse 103, little
Hopper 105 and big hopper 106 are tightly connected, and little hopper 105 and big hopper 106 are connected to sub-material storehouse 103
Lower section, and respectively semicoke hot with the small grain size of pyrolysis system 1 outlet and the hot semicoke of big granularity export be connected；
Classifier 102 being connected to the outlet of pyrolysis apparatus 101 and is arranged in sub-material storehouse 103, being used for will
The hot semicoke screening that pyrolysis apparatus 101 is discharged is the hot semicoke of small grain size and the hot semicoke of big granularity, and is respectively charged into
Little hopper 105 and big hopper 106；Being arranged in sub-material storehouse 103 by cyclone separator 104, being used for will
The pyrolysis gas isolated solid particle of pyrolysis apparatus 101 discharge and the pyrolysis gas of purification, the heat of described purification
Vent one's spleen and discharge from the pyrolysis gas outlet of pyrolysis system 1；Discharge nozzle 107 is connected cyclone separator 104
Particle outlet and little hopper 105, for mixing hot to described solid particle and small grain size semicoke.
In the pyrolysis system 1 that the present invention is supplied to, the shell of pyrolysis apparatus 101 and the shell in sub-material storehouse 103
Being tightly connected, little hopper 105 and big hopper 106 are sealedly connected on the lower section in sub-material storehouse 103.Pyrolysis apparatus
The outlet of 101 is arranged in sub-material storehouse 103, and classifier 102 is connected directly between pyrolysis apparatus 101
Outlet.Solid product/hot the semicoke obtained from pyrolysis apparatus 101 and gaseous products/pyrolysis gas are without any
Cooling or the cooling of form just enter directly in sub-material storehouse 103, and hot semicoke can be at once in grading
Device 102 sieves.Preferably pyrolysis apparatus 101 is arranged on the side in sub-material storehouse 103.
According to the present invention, the pyrolysis gas that pyrolysis apparatus 101 is discharged can be by setting in sub-material storehouse 103
Cyclone separator 104 separates.Under preferable case, cyclone separator 104 is arranged on grading
Above the outlet of device 102.So pyrolysis gas directly can separate in sub-material storehouse 103, consolidate
Body granule and the pyrolysis gas of purification.This process can be to utilize the hot semicoke with the discharge of solid product form simultaneously
The heat of high temperature discharged, makes gas solid separation carry out in pyrolysis temperature or under the high temperature of pyrolysis temperature,
Ensure that the tar in pyrolysis gas does not condenses, can overcome because of tar condensing blocking pipeline, reduce plant running
The defect in cycle, it is possible to improve the yield of tar under long-term operation.
In the case of according to the invention it is preferred to, pyrolysis apparatus 101 is rotary kiln pyrogenation device, classifier 102
For rotary kiln sifter, described rotary kiln sifter is driven by the rotating mechanism of described rotary kiln pyrogenation device and turns
Dynamic.Described revolution sifter is connected with described rotary kiln pyrogenation device, and described rotary kiln pyrogenation device rotates
While can drive revolution sifter rotation, can save be individually for again turn round sifter rotation is set
Mechanism, thus simplify device and operation control, reduce energy consumption.
In the present invention, cyclone separator 104 can be separator commonly used in the art, as long as can be
The solid in pyrolysis gas is efficiently separated under pyrolysis temperature.
The present invention also provides for the pyrolysis of a kind of broken coal and produces semicoke, the device of burnt oil and gas, and this device includes:
Rotary kiln 2, pyrolysis system 1, rotary kiln heater 3, tar recovery system 4 and semicoke cooling
Device 5, wherein, the pyrolysis system of the broken coal pyrolysis that pyrolysis system 1 provides for the present invention；Revolution kiln drying
Dry device 2 is provided with feed coal entrance, moisture-free coal outlet, hot-wind inlet and offgas outlet, pyrolysis system 1
It is provided with moisture-free coal entrance, semicoke heating medium inlet, pyrolysis gas outlet, small grain size hot semicoke outlet and big
The hot semicoke of granularity exports, and rotary kiln heater 3 is provided with high-temperature flue gas entry, heat smoke outlet, big grain
Spending hot semicoke entrance and semicoke heating medium outlet, tar recovery system 4 is provided with pyrolysis gas entrance, coal gas
Outlet and tar outlet, Semi-coke cooling device 5 is provided with small grain size hot semicoke entrance and semicoke outlet；Return
The moisture-free coal outlet of rotary kiln exsiccator 2 is connected with the moisture-free coal entrance of pyrolysis system 1, rotary kiln heater
The semicoke heating medium outlet of 3 is connected with the semicoke heating medium inlet of pyrolysis system 1, the heat of pyrolysis system 1
Outlet of venting one's spleen is connected with the pyrolysis gas entrance of tar recovery system 4, the hot semicoke of small grain size of pyrolysis system 1
Outlet is connected with the hot semicoke entrance of Semi-coke cooling device 5, the big granularity hot semicoke outlet of pyrolysis system 1
It is connected with the hot semicoke entrance of rotary kiln heater 3.
In the present invention, rotary kiln 2 can be rotary kiln heater commonly used in the art, example
Such as carbon rotary kiln, cement rotary kiln, lime rotary kiln etc..
In the present invention, rotary kiln heater 3 can be rotary kiln heater commonly used in the art, example
Such as carbon rotary kiln, cement rotary kiln, lime rotary kiln etc..
In the present invention, tar recovery system 4 can be tar reclaimer commonly used in the art,
This repeats no more.
In the present invention, Semi-coke cooling device 5 is preferably cooling screw and/or revolution cooler, wherein
Indirectly cooled down by recirculated water.
In the case of according to the invention it is preferred to, described device also includes: tail gas dust cleaning apparatus 6, waste heat pot
Stove 7, air stove 8 and high temperature cyclone separator 9；Tail gas dust cleaning apparatus 6 is provided with dry gas inlet
With dedusting offgas outlet, waste heat boiler 7 is provided with air intake, heat smoke entrance, steam (vapor) outlet and pot
Furnace exhaust gas exports, and air stove 8 is provided with air intake, fuel inlet, dedusting gas inlet and high temperature cigarette
Gas exports, and high temperature cyclone separator 9 is provided with high-temperature flue gas entry, high-temperature flue gas outlet and particle outlet；
The dry gas inlet of tail gas dust cleaning apparatus 6 is connected with the offgas outlet of rotary kiln, tails dedusting
The dedusting offgas outlet of device 6 and the dedusting gas inlet of air stove 8, the hot blast of rotary kiln 2
Entrance connects, and the heat smoke entrance of waste heat boiler 7 exports with the heat smoke of rotary kiln heater 3 and is connected,
The boiler exhaust gas outlet of waste heat boiler 7 is connected with the hot-wind inlet of rotary kiln 2, air stove 8
High-temperature flue gas outlet is connected with the high-temperature flue gas entry of high temperature cyclone separator 9, high temperature cyclone separator 9
High-temperature flue gas outlet be connected with the high-temperature flue gas entry of rotary kiln heater 3.
In the present invention, tail gas dust cleaning apparatus 6 is preferably cyclone separator, sack cleaner and electric cleaner
In at least one.
In the present invention, waste heat boiler 7, air stove 8 and high temperature cyclone separator 9 can use this area
Conventional use of equipment, does not repeats them here.
In the case of according to the invention it is preferred to, described device also includes: in the big granularity heat of pyrolysis system 1
It is sequentially set with mechanical lifting device between semicoke outlet and the big granularity hot semicoke entrance of rotary kiln heater 3
10 and semicoke feed bin 11, for reducing the degradation rate in the hot semicoke cyclic process of big granularity.
In the present invention, semicoke feed bin 11 is preferably provided at the top of rotary kiln heater 3, in order to continuously
Feed intake.
In the present invention, mechanical lifting device 10 can use lifting means commonly used in the art, as long as
Can effectively reduce the described hot semicoke of big granularity degradation rate in transfer process.
A kind of device being preferable to carry out method offer of the present invention includes: rotary kiln 2, pyrolysis system
System 1, rotary kiln heater 3, tar recovery system 4 and Semi-coke cooling device 5, wherein, pyrolysis system
1 includes pyrolysis apparatus 101, classifier 102, sub-material storehouse 103, cyclone separator 104, little hopper
105, big hopper 106 and discharge nozzle 107, for carrying out moisture-free coal and semicoke heat carrier being pyrolyzed, granularity
Classification and gas solid separation；Pyrolysis apparatus 101, sub-material storehouse 103, little hopper 105 and big hopper 106 seal
Connecting, little hopper 105 and big hopper 106 are connected to the lower section in sub-material storehouse 103, and are respectively equipped with granule
Spend the outlet of hot semicoke and the hot semicoke of big granularity exports, classifier 102 is connected to pyrolysis apparatus 101
Exporting and be arranged in sub-material storehouse 103, the hot semicoke screening for being discharged by pyrolysis apparatus 101 is small grain size
Hot semicoke and the hot semicoke of big granularity, be arranged on cyclone separator 104 in sub-material storehouse 103, for by heat
Solve pyrolysis gas isolated solid particle and the pyrolysis gas of purification that device 101 is discharged, and avoid in pyrolysis gas
Tar condensing blocking pipeline, discharge nozzle 107 is connected particle outlet and the small powder of cyclone separator 104
Bucket 105；Pyrolysis system 1 is provided with moisture-free coal entrance and semicoke heating medium inlet, for pyrolysis apparatus 101
Adding moisture-free coal and semicoke heat carrier, pyrolysis system 1 is provided with pyrolysis gas outlet, for by cyclone separator
104 pyrolysis gas isolating purification discharge pyrolysis system 1；Rotary kiln 2 is provided with feed coal and enters
Mouthful, moisture-free coal outlet, hot-wind inlet and offgas outlet, pyrolysis system 1 be provided with moisture-free coal entrance, half
Burnt heating medium inlet, pyrolysis gas outlet, the outlet of small grain size hot semicoke and big granularity hot semicoke outlet, revolution
Kiln heater 3 is provided with high-temperature flue gas entry, heat smoke outlet, big granularity hot semicoke entrance and semicoke heat
Carrier outlet, tar recovery system 4 is provided with pyrolysis gas entrance, gas exit and tar outlet, semicoke
Chiller 5 is provided with small grain size hot semicoke entrance and semicoke outlet；The moisture-free coal of rotary kiln 2
Outlet be connected with the moisture-free coal entrance of pyrolysis system 1, the semicoke heating medium outlet of rotary kiln heater 3 and
The semicoke heating medium inlet of pyrolysis system 1 connects, and the pyrolysis gas outlet of pyrolysis system 1 reclaims dress with tar
Put the pyrolysis gas entrance connection of 4, the outlet of small grain size hot semicoke and the Semi-coke cooling device 5 of pyrolysis system 1
Hot semicoke entrance connect, the heat of the outlet of the hot semicoke of big granularity of pyrolysis system 1 and rotary kiln heater 3
Semicoke entrance connects；Also include: tail gas dust cleaning apparatus 6, waste heat boiler 7, air stove 8 and high temperature rotation
Wind separator 9；Tail gas dust cleaning apparatus 6 is provided with dry gas inlet and dedusting offgas outlet, waste heat pot
Stove 7 is provided with air intake, heat smoke entrance, steam (vapor) outlet and boiler exhaust gas outlet, and air stove 8 sets
It is equipped with air intake, fuel inlet, dedusting gas inlet and high-temperature flue gas outlet, high temperature cyclone separator
9 are provided with high-temperature flue gas entry, high-temperature flue gas outlet and particle outlet；Being dried of tail gas dust cleaning apparatus 6
Gas inlet is connected with the offgas outlet of rotary kiln, the dedusting offgas outlet of tail gas dust cleaning apparatus 6
It is connected with dedusting gas inlet, the hot-wind inlet of rotary kiln 2 of air stove 8, waste heat boiler 7
The heat smoke of heat smoke entrance and rotary kiln heater 3 export and be connected, the boiler exhaust gas of waste heat boiler 7
Outlet is connected with the hot-wind inlet of rotary kiln 2, and the high-temperature flue gas outlet of air stove 8 is revolved with high temperature
The high-temperature flue gas entry of wind separator 9 connects, high-temperature flue gas outlet and the revolution of high temperature cyclone separator 9
The high-temperature flue gas entry of kiln heater 3 connects；Also include: the hot semicoke of big granularity at pyrolysis system 1 goes out
Mouthful and the big granularity hot semicoke entrance of rotary kiln heater 3 between be sequentially set with mechanical lifting device 10 and
Semicoke feed bin 11.
Present invention also offers the pyrolysis of a kind of broken coal and produce semicoke, the method for burnt oil and gas, the method bag
Include: the feed coal that granularity is below 25mm in dry conditions, is dried, is dried by (A)
Coal；(B) under pyrolytic conditions, described moisture-free coal and semicoke heat carrier are directly connect in pyrolysis system 1
Touch and be pyrolyzed, and in described pyrolysis system 1, solid product pyrolysis produced is without any shape
The cooling of formula and directly sieve and obtain the hot semicoke of small grain size, the hot semicoke of big granularity, produce at described solid product
In raw high temperature thermal field, the pyrolysis gas that the gaseous products removing dust that pyrolysis produces is purified；Wherein,
The hot semicoke of described small grain size carries out cooling and obtains semicoke；Described semicoke heat carrier is by by described big granularity warm
Semicoke carries out heating and obtains；(C) under tar recovering condition, the pyrolysis gas of described purification is condensed
Isolated coal gas and tar.
In the case of according to the invention it is preferred to, described pyrolysis system 1 can be the broken coal heat that the present invention provides
The pyrolysis system solved.Pyrolysis apparatus that pyrolysis system 1 includes, classifier, cyclone separator etc. as
Upper described, do not repeat them here.
In the present invention, described being dried can be carried out in rotary kiln.Described cooling can be at semicoke
Chiller is carried out.Described tar reclaims and can carry out in tar recovery system.Rotary kiln,
Semi-coke cooling device and tar recovery system be not as it has been described above, repeat them here.
The method that the present invention provides can reduce the Dust Capacity bringing in tar product and improve the product of tar
Quality.High-temperature hot heat of dissociation after the match at the hot semicoke tar can being effectively prevented from pyrolysis gas of venting one's spleen is cold
Solidifying, extend the method cycle of operation on device.The solid particle that the most separated pyrolysis gas obtains can
Mixing with semicoke hot with small grain size, the mixture obtained cools down acquisition semicoke product together, increases product half
Burnt yield.The hot semicoke of small grain size is broken, takes the method for screening only to be used by hot for big granularity semicoke
In being heated to be semicoke heat carrier, it helps reduce dust in tar in the method integrated operation of the present invention
Content, improves tar product quality.
In the case of according to the invention it is preferred to, described dry final temperature is 150-250 DEG C, described moisture-free coal
Water content less than 5%.In the present invention, cooling obtains the temperature of the cooling that the process of semicoke is reached and is
50-100℃.The temperature that the pyrolysis gas of described purification carries out the cooling that refrigerated separation reaches is 30-50 DEG C.
In the case of according to the invention it is preferred to, the granularity of the hot semicoke of described small grain size is below 3mm, institute
State the granularity of the hot semicoke of big granularity more than 3mm.Advantageously reduce the generation of dust.
In the case of according to the invention it is preferred to, the method also includes: the tail gas described dry run discharged
Carry out homoiothermic after carrying out dedusting, and the high-temperature flue gas described homoiothermic obtained is carried out after dust separation with described
The big granularity direct counter current contacting of hot semicoke carries out described heating, and wherein, the temperature of described tail gas is 100-150
℃；The temperature of described high-temperature flue gas is less than 1200 DEG C, and the oxygen volume content of described high-temperature flue gas is 5
Below %.The method that the present invention provides can utilize the tail gas being dried discharge, to air stove exiting flue gas temperature
Degree is adjusted.The low oxidation that can reduce semicoke hot to big granularity of the oxygen content of described high-temperature flue gas is made
With.The tail gas that described dry run is discharged carry out dedusting and described high-temperature flue gas carry out dust separation can
Contribute to reducing the Dust Capacity bringing described heating process into, ultimately help to reduce the dust in tar product
Content, improves the quality of tar product.
In the present invention, described dedusting can be carried out in tail gas dust cleaning apparatus.Described homoiothermic can be at hot blast
Stove is carried out.Described dust separation can be carried out in high temperature cyclone separator.Tail gas dust cleaning apparatus, heat
Wind furnace and high temperature cyclone separator can be as it has been described above, do not repeat them here.
In the case of according to the invention it is preferred to, the method also includes: the hot cigarette described heating process discharged
Gas and air carry out burning and obtain steam and boiler exhaust gas；The tail gas that described dry run is discharged is removed
Dirt obtains dedusting tail gas, and is mixed into hot blast with described boiler exhaust gas, is used for and described feed coal counter-current, straight
Contact carries out described being dried；The temperature of described boiler exhaust gas is 400-600 DEG C, described boiler exhaust gas
Oxygen volume content is less than 8%.Described hot blast is directly contacted with described feed coal adverse current, Ke Yiyou
Effect ground dust in feed coal taken away so as to get moisture-free coal in Dust Capacity reduce, and reduce bring into described
Dust Capacity in heating process, ultimately helps to reduce the dust content in tar product, improves tar and produces
The quality of product.
In the present invention, described burning can be carried out in waste heat boiler.Waste heat boiler is as it has been described above, at this
Repeat no more.Carry out the fuel that described burning can use to be preferably in pyrolysis gas, fine breeze and semicoke
At least one.
In the case of according to the invention it is preferred to, the temperature of described hot blast is 300-400 DEG C.
In the case of according to the invention it is preferred to, described semicoke heat carrier with the weight ratio of described moisture-free coal is
2-6:1, preferably 2.5-4:1.
In the case of according to the invention it is preferred to, the temperature of described semicoke heat carrier is 700-900 DEG C；Preferably
Ground, the temperature of described semicoke heat carrier is 750-850 DEG C.
In the case of according to the invention it is preferred to, the final temperature of described pyrolysis is 500-700 DEG C；Preferably,
The final temperature of described pyrolysis is 550-650 DEG C.
In the case of according to the invention it is preferred to, described feed coal is low order feed coal；The most described feed coal
For at least one in brown coal, jet coal, slightly caking and non-caking coal.
According to the present invention, the described hot semicoke of big granularity is added semicoke also by mechanical lifting device by the method
After feed bin, then feed intake to described heating process.The described hot semicoke of big granularity can be reduced be moved through
Collision in journey crushes, and reduces dust generation rate.Mechanical lifting device can be as it has been described above, the most superfluous at this
State.
Preferably, pyrolysis system and the broken coal pyrolysis of the broken coal pyrolysis that the method provides in the present invention produce half
The device of oil and gas burnt, burnt is implemented.
The method that a kind of preferred implementation of the present invention provides includes: (1) in dry conditions, by grain
Degree is dried for the feed coal of below 25mm, obtains moisture-free coal；(2) under pyrolytic conditions, by institute
State moisture-free coal directly to contact with semicoke heat carrier and carry out copyrolysis and screening, obtain the hot semicoke of small grain size, big
The hot semicoke of granularity and pyrolysis gas；Wherein, the hot semicoke of described small grain size carries out cooling and obtains semicoke；Described half
Burnt heat carrier obtains by the described hot semicoke of big granularity is carried out heating；(3) under tar recovering condition,
The pyrolysis gas of described purification is carried out isolated coal gas and tar；(4) described dry run is discharged
Tail gas carries out homoiothermic after carrying out dedusting, and the high-temperature flue gas obtained is carried out after dust separation with described big grain
Spend the direct counter current contacting of hot semicoke and carry out described heating；(5) heat smoke that described heating process is discharged and
Air contacts in waste heat boiler and obtains steam and boiler exhaust gas, is entered by the tail gas that described dry run is discharged
Row dedusting obtains dedusting tail gas, and is mixed into hot blast with described boiler exhaust gas, for inverse with described feed coal
Stream directly contact carries out described being dried；Wherein, the described broken coal pyrolysis that the method provides in the present invention produces
Semicoke, burnt oil and gas device in carry out.Preferred implementation can effectively reduce in tar product
Dust, improves the quality of tar product；Broken coal can be provided simultaneously to produce semicoke and tar process is higher
Efficiency.
Below in conjunction with Fig. 1 the work process of method and device that the present invention provides described:
Sending into feed coal directly to contact with hot blast adverse current in rotary kiln 2 and be dried, gained is done
Dry coal sends into the rotary kiln pyrogenation device 101 in pyrolysis system 1, with the semicoke from rotary kiln heater 3
Heat carrier mixing carries out copyrolysis.Hot semicoke pyrolysis obtained is by being arranged on rotary kiln heater 101
Discharging opening also stretches into the classifier 102 in sub-material storehouse 23 and sieves, be divided into the hot semicoke of small grain size and
The big hot semicoke of granularity, is pyrolyzed the cyclone separator that the pyrolysis gas obtained is arranged in sub-material storehouse 103 simultaneously
104 separate, the pyrolysis gas of the purification obtained enter tar recovery system 4 isolate product coal gas and
Tar, isolated solid particle is semicoke one hot with small grain size in discharge nozzle 107 enters little hopper 105
Rise and obtain semicoke product through Semi-coke cooling device 5.
The big hot semicoke of granularity enters semicoke feed bin 11 after mechanical lifting device 10, then adds to rotary kiln
Hot device 3 feeds intake.
The tail gas that rotary kiln 2 is discharged enters tail gas dust cleaning apparatus, and the dedusting tail gas part obtained is put
Sky, is partly into homoiothermic in air stove 8, and the high-temperature flue gas that air stove 8 produces separates through high-temp. vortex
During device 9 is separated off after dust, it is passed through in rotary kiln heater 3 for heating the hot semicoke of big granularity.
The heat smoke discharged from rotary kiln heater 3 is passed through waste heat boiler, and is passed through a small amount of air by flammable
Material burnouts, and obtains steam and boiler exhaust gas, and is mixed by another part of boiler exhaust gas with dedusting tail gas
It is passed through rotary kiln 2 for dry run for hot blast.
Hereinafter will be described the present invention by embodiment.
In following example and comparative example,
(1) Industrial Analysis of feed coal composition is carried out according to standard GB/T/T212-2008；
(2) mensuration of the water content of moisture-free coal is carried out according to standard GB/T211-2007；
(3) calorific value of gas measures and carries out according to standard GB/T12206-2006；
(4) assay method of the dust content of tar is four component analysis subtractives, with reference to national standard JTJ
052-2000 is carried out；
(5) assay method of the oxygen content in tail gas is JB/T8281-1999, uses zirconium oxide flue gas oxygen
Content online analytical instrument；
(6) thermal efficiency calculates according to the following formula: heat × 100% of the heat/input of output, wherein；Heat
Amount is obtained by heating-value determination.
In following embodiment and comparative example, feed coal is god east broken coal, by sieve analysis, the granularity of coal
Less than 25mm, wherein the granularity coal less than 6mm accounts for 55.0%, and the granularity coal less than 1mm accounts for 21.5%.
The composition Industrial Analysis data of god east broken coal are shown in Table 1.
Table 1
Embodiment 1
The present embodiment produces semicoke, the method for burnt oil and gas for the broken coal pyrolysis that the present invention is described.
As it is shown in figure 1, connect classifier 102 on the discharging opening of rotary kiln pyrogenation device 101, and from
Sub-material storehouse 103 is stretched in the side in sub-material storehouse 103, and the top in sub-material storehouse 103 arranges cyclone separator
104, little hopper 105 and big hopper 106 it is provided with in the lower section in sub-material storehouse 103, discharge nozzle 107 connects rotation
The granule discharging opening of wind separator 104 and little hopper 105.
Hot blast adverse current directly contact drying with 350 DEG C in the broken coal rotary kiln of god east is dried
Coal；The inlet amount of god east coal is 125t/h, and the air quantity of hot blast is 226240Nm3/ h, the final temperature that coal is dried
Being 200 DEG C, the water content of moisture-free coal is 2.6%；The temperature being dried the tail gas discharged is 120 DEG C, sends into
Cyclone separator and the tail gas dust cleaning apparatus of cloth bag separator combination, obtain dedusting tail gas；
The semicoke heat carrier of the moisture-free coal obtained and 800 DEG C is carried out in rotary kiln pyrogenation device pyrolysis obtain
Hot semicoke and pyrolysis gas, wherein, the weight ratio of semicoke heat carrier and moisture-free coal is 3.3:1, pyrolysis final
Temperature is 600 DEG C；
The hot semicoke obtained is sieved through classifier, obtains the small grain size that granularity is below 3mm
Hot semicoke and the granularity hot semicoke of big granularity more than 3mm；The pyrolysis gas obtained is entered through cyclone separator
Row isolated solid particle and the pyrolysis gas of purification；Solid particle is added the hot semicoke of small grain size, and send
Enter in cooling screw, after being indirectly cooled to 50 DEG C with recirculated water, obtain semicoke product；By the heat after dedusting
Venting one's spleen, (dust content is 2g/m3In tar recovery system, carry out below) cooling final to 40 DEG C, point
From obtaining product coal gas and tar；
The hot semicoke of big granularity obtained is delivered to semicoke feed bin through mechanical lifting device, then from semicoke feed bin
Feed intake in rotary kiln heater, with high-temperature flue gas (temperature is 1106 DEG C, and oxygen volume content is 4.5%,
Flow is 122360Nm3/ h) adverse current directly contact carries out heating and obtains above-mentioned semicoke heat carrier；High temperature cigarette
Gas is burnt in air stove with air by coal dust and obtains after high temperature cyclone separator separates dust, and draws
Enter dedusting tail gas regulation high-temperature flue-gas；
The heat smoke (temperature is 750 DEG C, and oxygen volume content is ＜ 0.5%) that rotary kiln heater is obtained
Send into waste heat boiler, and introduce a small amount of air general's wherein combustible after-flame, obtain steam and boiler exhaust gas.
The boiler exhaust gas of the dedusting tail gas sum obtained is mixed to get above-mentioned dry hot blast.
Finally give raw coal year processing capacity, device year runs the time, product (semicoke, burnt oil and gas)
Annual production, tar dustiness and system thermal efficiency the results are shown in Table 2.
Comparative example 1
According to the method for embodiment 1, except for the difference that, cyclone separator 104 is arranged on sub-material storehouse 103
Outside, substitute top in sub-material storehouse 103 and cyclone separator 104 be set.
Finally give raw coal year processing capacity, device year runs the time, product (semicoke, burnt oil and gas)
Annual production, tar dustiness and system thermal efficiency the results are shown in Table 2.
Comparative example 2
According to the method for embodiment 1, except for the difference that, with " by eastern for god broken coal rotary kiln with 350
DEG C hot blast and flow direct contact drying and obtain moisture-free coal ", substitute " in the broken coal rotary kiln of god east
Hot blast adverse current directly contact drying with 350 DEG C obtains moisture-free coal ".
Finally give raw coal year processing capacity, device year runs the time, product (semicoke, burnt oil and gas)
Annual production, tar dustiness and system thermal efficiency the results are shown in Table 2.
Comparative example 3
According to the method for embodiment 1, except for the difference that, being removed by classifier 102, pyrolysis obtains
No matter granule size is circulated semicoke directly as heat carrier.
Embodiment 2
The present embodiment produces semicoke, the method for burnt oil and gas for the broken coal pyrolysis that the present invention is described.
As it is shown in figure 1, connect classifier 102 on the discharging opening of rotary kiln pyrogenation device 101, and from
Sub-material storehouse 103 is stretched in the side in sub-material storehouse 103, and the top in sub-material storehouse 103 arranges cyclone separator
104, little hopper 105 and big hopper 106 it is provided with in the lower section in sub-material storehouse 103, discharge nozzle 107 connects rotation
The granule discharging opening of wind separator 104 and little hopper 105.
Hot blast adverse current directly contact drying with 300 DEG C in the broken coal rotary kiln of god east is dried
Coal；The inlet amount of god east coal is 125t/h, and the air quantity of hot blast is 260680Nm3/ h, the final temperature that coal is dried
Being 150 DEG C, the water content of moisture-free coal is 3.6%；The temperature being dried the tail gas discharged is 120 DEG C, sends into
Electric cleaner, obtains dedusting tail gas；
The semicoke heat carrier of the moisture-free coal obtained and 850 DEG C is carried out in rotary kiln pyrogenation device pyrolysis obtain
Hot semicoke and pyrolysis gas, wherein, the weight ratio of semicoke heat carrier and moisture-free coal is 3.8:1, pyrolysis final
Temperature is 650 DEG C；
The hot semicoke obtained is sieved through classifier, obtains the small grain size that granularity is below 3mm
Hot semicoke and the granularity hot semicoke of big granularity more than 3mm；The pyrolysis gas obtained is entered through cyclone separator
Row isolated solid particle and the pyrolysis gas of purification；Solid particle is added the hot semicoke of small grain size, and send
Enter and turn round in cooler, after being indirectly cooled to 80 DEG C with recirculated water, obtain semicoke product；By the heat after dedusting
Venting one's spleen, (dust content is 2g/m3In tar recovery system, carry out below) cooling final to 50 DEG C, point
From obtaining product coal gas and tar；
The hot semicoke of big granularity obtained is delivered to semicoke feed bin through mechanical lifting device, then from semicoke feed bin
Feed intake in rotary kiln heater, with high-temperature flue gas (temperature is 1175 DEG C, and oxygen volume content is 3.5%,
Flow is 136640Nm3/ h) adverse current directly contact carries out heating and obtains above-mentioned semicoke heat carrier；High temperature cigarette
Gas is burnt in air stove with air by coal dust, coke powder and obtains after high temperature cyclone separator separates dust
Arrive, and introduce dedusting tail gas regulation high-temperature flue-gas；
The heat smoke (temperature is 800 DEG C, and oxygen content is ＜ 0.5 volume %) that rotary kiln heater is obtained
Send into waste heat boiler, and introduce a small amount of air general's wherein combustible after-flame, obtain steam and boiler exhaust gas.
The boiler exhaust gas of the dedusting tail gas sum obtained is mixed to get above-mentioned dry hot blast.
Finally give raw coal year processing capacity, device year runs the time, product (semicoke, burnt oil and gas)
Annual production, tar dustiness and system thermal efficiency the results are shown in Table 2.
Embodiment 3
The present embodiment produces semicoke, the method for burnt oil and gas for the broken coal pyrolysis that the present invention is described.
As it is shown in figure 1, connect classifier 102 on the discharging opening of rotary kiln pyrogenation device 101, and from
Sub-material storehouse 103 is stretched in the side in sub-material storehouse 103, and the top in sub-material storehouse 103 arranges cyclone separator
104, little hopper 105 and big hopper 106 it is provided with in the lower section in sub-material storehouse 103, discharge nozzle 107 connects rotation
The granule discharging opening of wind separator 104 and little hopper 105.
Hot blast adverse current directly contact drying with 400 DEG C in the broken coal rotary kiln of god east is dried
Coal；The inlet amount of god east coal is 125t/h, and the air quantity of hot blast is 205240Nm3/h, the final temperature that coal is dried
Being 250 DEG C, the water content of moisture-free coal is 1.1%；The temperature being dried the tail gas discharged is 120 DEG C, sends into
Cyclone separator and the tail gas dust cleaning apparatus of sack cleaner combination, obtain dedusting tail gas；
The semicoke heat carrier of the moisture-free coal obtained and 750 DEG C is carried out in rotary kiln pyrogenation device pyrolysis obtain
Hot semicoke and pyrolysis gas, wherein, the weight ratio of semicoke heat carrier and moisture-free coal is 2.8:1, pyrolysis final
Temperature is 550 DEG C；
The hot semicoke obtained is sieved through classifier, obtains the small grain size that granularity is below 3mm
Hot semicoke and the granularity hot semicoke of big granularity more than 3mm；The pyrolysis gas obtained is entered through cyclone separator
Row isolated solid particle and the pyrolysis gas of purification；Solid particle is added the hot semicoke of small grain size, and send
Enter in cooling screw, after being indirectly cooled to 100 DEG C with recirculated water, obtain semicoke product；After dedusting
(dust content is 2g/m to pyrolysis gas3In tar recovery system, carry out below) cooling final to 30 DEG C,
Isolated product coal gas and tar；
The hot semicoke of big granularity obtained is delivered to semicoke feed bin through mechanical lifting device, then from semicoke feed bin
Feed intake in rotary kiln heater, with high-temperature flue gas (temperature is 1013 DEG C, and oxygen volume content is 4.0%,
Flow is 108640Nm3/ h) adverse current directly contact carries out heating and obtains above-mentioned semicoke heat carrier；High temperature cigarette
Gas is burnt in air stove with air by coal dust and obtains after high temperature cyclone separator separates dust, and draws
Enter dedusting tail gas regulation high-temperature flue-gas；
The heat smoke (temperature is 700 DEG C, and oxygen volume content is ＜ 0.5%) that rotary kiln heater is obtained
Send into waste heat boiler, and introduce a small amount of air general's wherein combustible after-flame, obtain steam and boiler exhaust gas.
The boiler exhaust gas of the dedusting tail gas sum obtained is mixed to get above-mentioned dry hot blast.
Finally give raw coal year processing capacity, device year runs the time, product (semicoke, burnt oil and gas)
Annual production, tar dustiness and system thermal efficiency the results are shown in Table 2.
Table 2
Note: calorific value of gas is 25.71MJ/m3
By the result of embodiment and comparative example it can be seen that the method using the present invention to provide, can avoid
The coal-tar middle oil condensation of pyrolysis gas dedusting causes blocking, hence it is evident that the year improving system runs the time, increases and produces
Product (semicoke, burnt oil and gas) annual production, reduces tar dustiness, and the thermal efficiency of system also obtains
To a certain degree improve.
Claims (10)
1. a pyrolysis system for broken coal pyrolysis, this pyrolysis system (1) is provided with moisture-free coal entrance, semicoke
Heating medium inlet, pyrolysis gas outlet, the outlet of small grain size hot semicoke and big granularity semicoke outlet；
It is characterized in that, this pyrolysis system (1) include pyrolysis apparatus (101), classifier (102),
Sub-material storehouse (103), cyclone separator (104), little hopper (105), big hopper (106) and discharging
Pipe (107)；Pyrolysis apparatus (101), sub-material storehouse (103), little hopper (105) and big hopper (106)
Being tightly connected, little hopper (105) and big hopper (106) are connected to the lower section of sub-material storehouse (103),
And be connected with the outlet of small grain size hot semicoke and the outlet of big granularity hot semicoke of pyrolysis system (1) respectively；Will
In classifier (102) is connected to the outlet of pyrolysis apparatus (101) and is arranged on sub-material storehouse (103),
Hot semicoke screening for being discharged by pyrolysis apparatus (101) is the hot semicoke of small grain size and the hot semicoke of big granularity,
And it is respectively charged into little hopper (105) and big hopper (106)；Cyclone separator (104) is arranged on point
In feed bin (103), the pyrolysis gas isolated solid particle being used for discharging pyrolysis apparatus (101) is with clean
The pyrolysis gas changed, the pyrolysis gas of described purification is discharged from the pyrolysis gas outlet of pyrolysis system (1)；To go out
Material pipe (107) connects particle outlet and the little hopper (105) of cyclone separator (104), for by institute
State solid particle semicoke hot with small grain size to mix.
System the most according to claim 1, wherein, pyrolysis apparatus (101) is rotary kiln pyrogenation device,
Classifier (102) is rotary kiln sifter, and described rotary kiln sifter is by described rotary kiln pyrogenation
The rotating mechanism of device drives and rotates.
System the most according to claim 1 and 2, wherein, is arranged cyclone separator (104)
Above the outlet of classifier (102).
4. broken coal pyrolysis produces semicoke, a device for burnt oil and gas, and this device includes: pyrolysis system
System (1), rotary kiln (2), rotary kiln heater (3), tar recovery system (4) and half
Burnt chiller (5), it is characterised in that pyrolysis system (1) is any one in claim 1-3
The pyrolysis system of described broken coal pyrolysis；
Rotary kiln (2) is provided with feed coal entrance, moisture-free coal outlet, hot-wind inlet and tail gas
Outlet, pyrolysis system (1) be provided with moisture-free coal entrance, semicoke heating medium inlet, pyrolysis gas outlet,
The outlet of small grain size hot semicoke and the hot semicoke of big granularity export, and rotary kiln heater (3) is provided with high temperature cigarette
The outlet of gas entrance, heat smoke, big granularity hot semicoke entrance and semicoke heating medium outlet, tar recovery system
(4) being provided with pyrolysis gas entrance, gas exit and tar outlet, Semi-coke cooling device (5) is provided with
Small grain size hot semicoke entrance and semicoke outlet；
The moisture-free coal outlet of rotary kiln (2) is connected with the moisture-free coal entrance of pyrolysis system (1),
The semicoke heating medium outlet of rotary kiln heater (3) connects with the semicoke heating medium inlet of pyrolysis system (1)
Connecing, the pyrolysis gas outlet of pyrolysis system (1) is connected with the pyrolysis gas entrance of tar recovery system (4),
The small grain size hot semicoke outlet of pyrolysis system (1) is connected with the hot semicoke entrance of Semi-coke cooling device (5),
The big granularity hot semicoke outlet of pyrolysis system (1) is connected with the hot semicoke entrance of rotary kiln heater (3).
Device the most according to claim 4, wherein, described device also includes: tails dedusting fills
Put (6), waste heat boiler (7), air stove (8) and high temperature cyclone separator (9)；Tails dedusting fills
Putting (6) and be provided with dry gas inlet and dedusting offgas outlet, waste heat boiler (7) is provided with air and enters
Mouth, heat smoke entrance, steam (vapor) outlet and boiler exhaust gas outlet, air stove (8) be provided with air intake,
Fuel inlet, dedusting gas inlet and high-temperature flue gas outlet, high temperature cyclone separator (9) is provided with height
Temperature smoke inlet, high-temperature flue gas outlet and particle outlet；The dry tail gas of tail gas dust cleaning apparatus (6) enters
Mouthful be connected with the offgas outlet of rotary kiln, the dedusting offgas outlet of tail gas dust cleaning apparatus (6) and
The dedusting gas inlet of air stove (8), the hot-wind inlet of rotary kiln (2) connect, waste heat pot
The heat smoke entrance of stove (7) exports with the heat smoke of rotary kiln heater (3) and is connected, waste heat boiler (7)
Boiler exhaust gas outlet be connected with the hot-wind inlet of rotary kiln (2), the high temperature of air stove (8)
Exhanst gas outlet is connected with the high-temperature flue gas entry of high temperature cyclone separator (9), high temperature cyclone separator (9)
High-temperature flue gas outlet be connected with the high-temperature flue gas entry of rotary kiln heater (3).
6. according to the device described in claim 4 or 5, wherein, described device also includes: in pyrolysis
The outlet of big granularity hot semicoke and the big granularity hot semicoke entrance of rotary kiln heater (3) of system (1) it
Between be sequentially set with mechanical lifting device (10) and semicoke feed bin (11), be used for reducing the hot semicoke of big granularity
Degradation rate in cyclic process.
7. broken coal pyrolysis produces semicoke, a method for burnt oil and gas, and the method includes:
(A) in dry conditions, the feed coal that granularity is below 25mm is dried, is done
Dry coal；
(B) under pyrolytic conditions, by described moisture-free coal and semicoke heat carrier in pyrolysis system (1) straight
Contact is pyrolyzed, and in described pyrolysis system (1), the solid product that pyrolysis is produced without
Cross any type of cooling and directly sieve and obtain the hot semicoke of small grain size, the hot semicoke of big granularity, described solid
In the high temperature thermal field that state product produces, the pyrolysis that the gaseous products removing dust that pyrolysis produces is purified
Gas；
Wherein, the hot semicoke of described small grain size carries out cooling and obtains semicoke；Described semicoke heat carrier is by by institute
State the hot semicoke of big granularity to carry out heating and obtain；
(C) under tar recovering condition, the pyrolysis gas of described purification is carried out condensation separation and obtains coal gas
And tar；
Described pyrolysis system (1) is the pyrolysis of the broken coal pyrolysis in claim 1-3 described in any one
System.
Method the most according to claim 7, wherein, the granularity of the hot semicoke of described small grain size is 3mm
Hereinafter, the granularity of the described hot semicoke of big granularity is more than 3mm.
Method the most according to claim 7, wherein, the method also includes: by described dried
The tail gas that journey is discharged carries out homoiothermic after carrying out dedusting, and the high-temperature flue gas described homoiothermic obtained carries out dust
Described heating, wherein, described tail gas is carried out with the described big granularity direct counter current contacting of hot semicoke after separation
Temperature is 100-150 DEG C, and the temperature of described high-temperature flue gas is less than 1200 DEG C, the oxygen of described high-temperature flue gas
Air volume content is less than 5%.
Method the most according to claim 7, wherein, the method also includes: by described heated
Heat smoke and air that journey is discharged carry out burning and obtain steam and boiler exhaust gas；Described dry run is discharged
Tail gas carry out dedusting and obtain dedusting tail gas, and be mixed into hot blast with described boiler exhaust gas, for described
The directly contact of feed coal adverse current carries out described being dried；The temperature of described boiler exhaust gas is 400-600 DEG C, institute
The oxygen volume content stating boiler exhaust gas is less than 8%.
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| CN105385467A (en) * | 2015-11-27 | 2016-03-09 | 华电重工股份有限公司 | Low-rank coal carbonization process and system |
| CN105950197A (en) * | 2016-06-16 | 2016-09-21 | 北京神雾环境能源科技集团股份有限公司 | Coal pyrolysis device and circulating fluidized bed combined system and coal processing method |
| CN107557038A (en) * | 2016-06-30 | 2018-01-09 | 神华集团有限责任公司 | The copyrolysis method and pyrolytic reaction system of a kind of coal and sticky carbonaceous material |
| CN108018053A (en) * | 2016-10-28 | 2018-05-11 | 何巨堂 | Genealogical classification coke discharging method and apparatus is burnt in the hydrocarbon powder pyrolysis of solid heat carrier method |
| CN106753492B (en) * | 2017-01-19 | 2024-02-09 | 榆林煤化工产业促进中心 | Internal heating type drum heat storage wall pulverized coal pyrolysis process and device |
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| CN110630219B (en) * | 2019-08-27 | 2022-03-15 | 河北迪运化工科技有限公司 | Kiln for burning oil-containing mixture at high temperature |
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