CN206244715U - A kind of CDQ Emission Control System of energy high efficiente callback heat energy - Google Patents
A kind of CDQ Emission Control System of energy high efficiente callback heat energy Download PDFInfo
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- CN206244715U CN206244715U CN201621218035.3U CN201621218035U CN206244715U CN 206244715 U CN206244715 U CN 206244715U CN 201621218035 U CN201621218035 U CN 201621218035U CN 206244715 U CN206244715 U CN 206244715U
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- coke
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- deduster
- dry quenching
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- 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
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
A kind of CDQ Emission Control System of energy high efficiente callback heat energy, including coke dry quenching furnace, overall deduster, coke dry quenching boiler, coke dry quenching furnace are sent into coke dry quenching boiler and are exchanged heat after overall deduster is by high temperature circulation dedusting；The overall deduster is water-cooled cyclone dust collectors, the upper ring header and lower ring header for being arranged at overall deduster top are connected by tedge and down-comer with coke dry quenching boiler drum respectively, form the heat exchange water loop between overall deduster and coke dry quenching boiler drum, the outlet for being arranged at the bottom heat-exchanging tube bundle of overall deduster bottom is connected with dry quenched coke boiler economizer, and import is connected with coke dry quenching boiler feedwater piping.The utility model structure is more firm, extends the service life of deduster；Reduce the floor space of dry coke quenching auxiliary；The utilization rate of heat energy and coke powder is improve, so as to improve the utilization rate of waste heat of dry coke quenching；Coke dry quenching boiler service life is improved, the maintenance cost of coke dry quenching boiler and circulating fan is reduced.
Description
Technical field
The utility model is related to the dry coke quenching field of coal chemical enterprise, and in particular to a kind of dry coke quenching of energy high efficiente callback heat energy
Dust pelletizing system.
Background technology
Dry coke quenching technique refers to that the red burnt sensible heat that coke oven is produced is carried out into recuperation of heat by coke dry quenching boiler.Inertia circulating air
Body takes the heat of recovery to waste heat boiler and carries out heat exchange production steam with water, and steam is sent to steam turbine, is driven by steam turbine and sent out
Electric power generation.High temperature circulation gas turns into low-temperature circulating gas after being exchanged heat with water, low-temperature circulating gas enters coke dry quenching furnace again
Exchanged heat with red Jiao, so constantly circulation.The method of this production coke can not only significantly improve coke quality, moreover it is possible to
Red burnt sensible heat is made full use of, energy saving reduces the discharge of pollutant.Therefore, dry coke quenching technique has obtained quick hair in recent years
Exhibition, at the same time, the research to dry coke quenching auxiliary is more and more deep.
Domestic dry coke quenching auxiliary mainly includes at present：Coke dry quenching furnace 1, disposable dust remover 2, coke dry quenching boiler 3, final dusting
Device 4, circulating fan 5, heat exchange of heat pipe etc. 6, refers to Fig. 1.Recyclegas enters once through the air channel 10 of the upper position of coke dry quenching furnace 1
Deduster 2, carries out rough dusting；Coke dry quenching boiler 3 is entered by high-temperature expansion joint by the outlet of disposable dust remover 2, with boiler
Feedwater is exchanged heat, and produces superheated steam；Recyclegas after cooling enters secondary filter by the lower part outlet of coke dry quenching boiler 3
4 further dedustings, coke dry quenching furnace 1 is reentered by circulating fan 5, heat exchanger 6.There is following defect and not in this technological process
Foot：
1) disposable dust remover 2 the most frequently used at present is the inertial dust separator containing top barrier wall structure, in dry coke quenching auxiliary
In running, because flow velocity of the recyclegas in annular passage 10 is very fast, the barricade of disposable dust remover 2 bears larger impact
, easily there is deformation in power, and the long-term expanded by heating of top barricade, and intensity declines, and brick easily comes off, body enabling capabilities are subtracted
It is weak, or even cause barricade integral sinking, so as to influence the normal operation of dry coke quenching equipment.
2) because the headroom of coke dry quenching furnace 1 is smaller, i.e., the top of coke dry quenching furnace 1 is not provided with the upper strata sky for separating coke powder
Between, and flow velocity of the recyclegas in annular passage 10 is very fast, therefore, the coke powder taken away by recyclegas is more；And dry put out
Burnt disposable dust remover is mainly gravitational precipitator, inertial dust separator, and its efficiency of dust collection is relatively low, is adapted to particle separation diameter and is more than 30~50
The dust of micron, the recyclegas after dedusting still contains part coke powder, and it easily makes to the steam-water pipe in coke dry quenching boiler 3
Into abrasion, the service life of coke dry quenching boiler is influenceed, even cause the steam-water pipe in coke dry quenching boiler 3 to rupture when serious, from
And influence the normal operation of dry coke quenching equipment.
3) no matter chemically in composition or granularmetric composition, dry coke quenching coke powder and blast furnace coal dust are all sufficiently close to, in the past
CDQ coke powder is used in power plant displacement thermal coal mostly, or in blast furnace PCI technology, coke powder to be used for into pulverized coal injection
Fuel, substitute part coal dust, or returned with proper ratio substitution lean coal and match somebody with somebody shove charge coal coking, but the treatment of this part coke powder avoids
The open operation such as transport, does not cause the wasting of resources and the site environment seriously polluted；And the water cold sleeve of disposable dust remover 2
Often discharge high temperature coke powder burns out form valve, causes pipe crack leak in water collar and influences the normal operation of dry coke quenching equipment.
4) for current domestic dry coke quenching auxiliary, the coke powder in recyclegas is mainly by once removing with barricade
Dirt device 2 and removed by secondary filter 4 that cyclone separator is constituted, in the control outlet recyclegas of disposable dust remover 2
Coke powder concentration is in 10-12g/m3, the coke powder concentration in the outlet recyclegas of secondary filter 4 is in 1g/m3Below；Both totality
Floor space is big, and tubing, steel construction consumption are big.
Utility model content
The utility model is for drawbacks described above present in prior art, it is therefore an objective to provide a kind of energy high efficiente callback heat energy
CDQ Emission Control System, its overall floor space is small, and efficiency of dust collection is high, and coke dry quenching boiler evaporation capacity is big, and recyclegas puts out to dry
Burnt boiler abrasion is small.
In order to achieve the above object, the utility model is realized using following technical scheme：
A kind of CDQ Emission Control System of energy high efficiente callback heat energy, including coke dry quenching furnace, overall deduster, coke dry quenching boiler,
Coke dry quenching furnace is sent into coke dry quenching boiler and is exchanged heat after overall deduster is by high temperature circulation dedusting；The overall deduster is water
Cold cyclone dust collectors, be arranged at the upper ring header and lower ring header on overall deduster top respectively by tedge and down-comer with
Coke dry quenching boiler drum is connected, and forms the heat exchange water loop between overall deduster and coke dry quenching boiler drum, is arranged at entirety
The outlet of the bottom heat-exchanging tube bundle of deduster bottom is connected with dry quenched coke boiler economizer, import and coke dry quenching boiler feedwater piping
It is connected.
The overall deduster includes recyclegas entrance, recyclegas outlet, cyclone separator, gas burner, cold
But chamber, top heat-exchanging tube bundle, upper ring header, lower ring header, bottom heat-exchanging tube bundle, recyclegas entrance are arranged on overall deduster
Upper position, recyclegas outlet is arranged on the symmetrical center positions on overall deduster top, recyclegas entrance and circulation
Gas vent is connected with cyclone separator respectively；Cooling chamber is arranged on the bottom of cyclone separator, and gas burner is arranged on rotation
Between wind separator and cooling chamber；Top heat-exchanging tube bundle is arranged in the wall of cyclone separator, is set on cyclone separator top
Ring header is put, the ring header in the case where the bottom of cyclone separator is set, top heat-exchanging tube bundle outlet is connected with upper ring header, on
Portion's heat-exchanging tube bundle import is connected with lower ring header；Portion's heat-exchanging tube bundle is set in the wall of cooling chamber.
The air inlet of the cyclone separator is provided with shutter.
Back material hole is provided with the lower end of the recyclegas entrance to be connected with cyclone separator.
Compared with prior art, the beneficial effects of the utility model are：
1) the top barrier wall structure of former disposable dust remover is eliminated, structure is more firm, improves the overall strong of deduster
Degree and efficiency of dust collection, extend the service life of deduster, so as to improve the utilization rate of dry coke quenching auxiliary.
2) former secondary filter is eliminated, monoblock type deduster structure is changed to, the occupation of land of dry coke quenching auxiliary is substantially reduced
Area.
3) gas burner is set up, the coke powder in burn cycle gas is fully exchanged heat using top and bottom cooling tube bundle,
Row's ash temperature of deduster is reduced, the evaporation capacity of coke dry quenching boiler is increased, the utilization rate of heat energy and coke powder is improve, from
And improve the utilization rate of waste heat of dry coke quenching.
4) abrasion to coke dry quenching boiler inside and circulating fan is reduced, and then improves the use longevity of coke dry quenching boiler
Life, reduces the maintenance cost of coke dry quenching boiler and circulating fan.
Brief description of the drawings
Fig. 1 is the structural representation of prior art CDQ Emission Control System.
Fig. 2 is a kind of structural representation of the CDQ Emission Control System of energy high efficiente callback heat energy of the utility model.
Fig. 3 is the structural representation of overall deduster in the utility model.
Fig. 4 is the A-A direction views of Fig. 3.
Fig. 5 is the top view of overall deduster.
In figure：1- coke dry quenching furnaces；2- disposable dust removers；3- coke dry quenching boilers；4- secondary filters；5- circulating fans；6- heat
Heat exchange of heat pipe；10- annular passages；22- entirety dedusters；26- coke dry quenching boiler drums；27- down-comers；28- tedges；41-
Recyclegas entrance；42- recyclegas is exported；43- shutters；44- cyclone separators；Ring header under 45-；The upper ring headers of 46-；
47- tops heat-exchanging tube bundle；48- refractory materials；49- external insulation materials；50- bottoms heat-exchanging tube bundle；51- gas burners；52-
Cooling chamber；53- back material holes.
Specific embodiment
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
As Figure 2-Figure 5, a kind of CDQ Emission Control System of energy high efficiente callback heat energy, including coke dry quenching furnace 1, overall dedusting
Device 22, coke dry quenching boiler 3, coke dry quenching furnace 1 send into coke dry quenching boiler 3 after overall deduster 22 is by high temperature circulation dedusting
Heat exchange；The overall deduster 22 be water-cooled cyclone dust collectors, be arranged at the upper ring header 46 on the top of overall deduster 22 and under
Ring header 45 is connected by tedge 28 and down-comer 27 with coke dry quenching boiler drum 26 respectively, is formed overall deduster 22 and is done
Heat exchange water loop between quenching boiler-steam dome 26, be arranged at the bottom of overall deduster 22 bottom heat-exchanging tube bundle 50 outlet with
Dry quenched coke boiler economizer is connected, and import is connected with coke dry quenching boiler feedwater piping.
The top of coke dry quenching furnace 1 is provided with red burnt loading port, and the bottom of coke dry quenching furnace 1 is provided with discharging device for coke.In the top position of coke dry quenching furnace 1
Annular passage 10 is installed, annular passage 10 is connected with the air inlet of overall deduster 22, the air outlet warp of overall deduster 22
Air channel is connected with the air inlet of coke dry quenching boiler 3.The air outlet of coke dry quenching boiler 3 is connected with the air inlet of circulating fan 5, circulation
The exhaust outlet of blower fan 5 is connected with the air inlet of heat exchange of heat pipe 6, and the air outlet of heat exchange of heat pipe 6 connects with the air inlet of coke dry quenching furnace 1
Connect.
See Fig. 3, Fig. 4, Fig. 5, the overall deduster 22 includes the outlet 42, whirlwind of recyclegas entrance 41, recyclegas
Separator 44, gas burner 51, cooling chamber 52, top heat-exchanging tube bundle 47, upper ring header 46, the heat exchange of lower ring header 45, bottom
Tube bank 50, recyclegas entrance 41 is arranged on the upper position of overall deduster 22, and recyclegas outlet 42 is arranged on overall removing
The symmetrical center positions on the top of dirt device 22, recyclegas entrance 41 and recyclegas outlet 42 connect with cyclone separator 44 respectively
It is logical；Cooling chamber 52 is arranged on the bottom of cyclone separator 44, and gas burner 51 is arranged on cyclone separator 44 and cooling chamber 52
Between；Top heat-exchanging tube bundle 47 is arranged in the wall of cyclone separator 44, and the top of cyclone separator 44 is provided with circular arc
Upper ring header 46, the bottom of cyclone separator 44 is provided with the lower ring header 45 of circular arc, top heat-exchanging tube bundle 47 is exported
It is connected with upper ring header 46, the import of top heat-exchanging tube bundle 47 is connected with lower ring header 45；Portion is set in the wall of cooling chamber 52
Heat-exchanging tube bundle 50.The inner surface of cyclone separator 44 welds pin, if refractory material 48；The outer surface of cyclone separator 44 is protected for outside
Adiabator 49.
The air inlet of the cyclone separator 44 is provided with shutter 43.It is provided with resistance in the air inlet of cyclone separator 44
Fiery abrasive brick, the center reserving hole of brick forms shutter.
Back material hole 53 is provided with the lower end of the recyclegas entrance 41 to be connected with cyclone separator 44.
A kind of dust collecting process of the CDQ Emission Control System of energy high efficiente callback heat energy, it is specific as follows：
1) high temperature circulation gas is exported from coke dry quenching furnace 1 and enters overall deduster 22 through annular passage 10, carries the height of coke powder
Warm recyclegas first passes around shutter 43 in overall deduster 22, is divided into several strands of air-flows and changes direction, due to inertia
Effect, the bulky grain coke powder in high temperature circulation gas is blocked in outside shutter 43, and high temperature circulation gas then enters through shutter 43
Enter cyclone separator 44.
Coke is loaded into coke dry quenching furnace 1 by charging apparatus, coke initially enters the room that prestores of coke dry quenching furnace 1, subsequently enters dry
The cooling chamber of stove 1 is put out, recyclegas is flowed up from the bottom of coke dry quenching furnace 1, carries out heat exchange with incandescent coke, Jiao after cooling
Charcoal drained into by vibra feeder and rotatory sealing and sent outside on belt conveyer, and the high temperature circulation gas after heat exchange carries coke powder certainly
Coke dry quenching furnace 1 is exported and enters overall deduster 22 through annular passage 10.
2) high temperature circulation gas enters from the tangential admission pipe of cyclone separator 44, and spiral fortune is made downwards by the constraint of wall
Dynamic, under centrifugal inertial force effect, the coke powder particle in high temperature circulation gas is thrown to wall and is separated with air-flow, by outward turning
The promotion in whirlpool and the effect of the gravity of itself are fallen along wall, and the high temperature circulation gas after purification is justified in arrival cyclone separator 44
It is from bottom to top for the helical movement near central shaft after cone base, finally discharged by top recyclegas outlet 42.
High temperature circulation gas after purification is exchanged heat through air channel into coke dry quenching boiler 3, by high temperature circulation gas
Btu utilization, and high temperature circulation gas is lowered the temperature into low-temperature circulating gas；Low-temperature circulating gas after heat exchange is through circulating fan 5
Further exchange heat cooling into heat exchange of heat pipe 6, and final low-temperature circulating gas reenters coke dry quenching furnace 1 through air channel.
3) the coke powder particle separated by shutter 43, by bottom back material hole 53, into cyclone separator 44, with rotation
The coke powder particle mixing that wind separator 44 is separated, falls along wall together；Gas burner 51 is from below to cyclonic separation
Feeding air and gas mixture body in device 44, so as to the mixing coke powder particle burning for causing to fall and break.
Gas burner 51 is provided with flow control valve, and the outlet conduit of overall deduster 22 is provided with oxygen concentration detection
Device, air import volume is automatically adjusted according to oxygen concentration.
4) due to the effect of density contrast, water enters lower ring header 45 from coke dry quenching boiler drum 26 by down-comer 27, then
Exchanged heat with the coke powder particle of burning through top heat-exchanging tube bundle 47, the steam water interface after heat exchange is reentered through upper ring header 46
Coke dry quenching boiler drum 26.
After water from coke dry quenching boiler drum 26 is heated, by coke dry quenching boiler drum 26, down-comer 27, lower ring header
45th, Natural Circulation is carried out in the loop that top heat-exchanging tube bundle 47 and upper ring header 46 are formed.
5) coke powder particle burnt in cyclone separator 44 formation lime-ash enter bottom cooling chamber 52, boiler main feedwater
Exchanged heat by bottom heat-exchanging tube bundle 50 and lime-ash, because grieshoch is relatively thin, so cooling velocity is fast, effect is good, row's ash temperature is more
It is low；Boiler main feedwater after heat exchange enters dry quenched coke boiler economizer from bottom heat-exchanging tube bundle outlet 52.
Boiler main feedwater enter dry quenched coke boiler economizer after, through with the inner loop gas converting heat of coke dry quenching boiler 3, enter
After coke dry quenching boiler drum 26, then the heat exchange of water cooled wall, evaporator, drum, primary superheater, two-stage superheater and recyclegas
Superheated steam is produced, external user is supplied.
The CDQ Emission Control System and technique of a kind of energy high efficiente callback heat energy that the utility model is provided eliminate original once
The top barrier wall structure of deduster, structure is more firm, improves the bulk strength and efficiency of dust collection of deduster, extends dedusting
The service life of device, so as to improve the utilization rate of dry coke quenching auxiliary, improves the arrangement of disposable dust remover and secondary filter, greatly
The big floor space for reducing dry coke quenching auxiliary；Set up gas burner, the coke powder in burn cycle gas, using upper simultaneously
Portion and bottom cooling tube bundle fully exchange heat, and increased the evaporation capacity of coke dry quenching boiler, improve the utilization rate of heat energy and coke powder, subtract
The small secondary pollution of site environment, reduces the abrasion to coke dry quenching boiler inside and circulating fan, and then improve dry coke quenching
The service life of boiler, reduces the maintenance cost and row's ash temperature of deduster of coke dry quenching boiler and circulating fan.
The above, the only exemplary specific embodiment of the utility model, but protection domain of the present utility model is simultaneously
This is not limited to, for any one skilled in the art, in the technical scope that the utility model is disclosed, according to
The various equivalent technical schemes and design that the utility model is made should all cover within protection domain of the present utility model.
Claims (4)
1. it is a kind of can high efficiente callback heat energy CDQ Emission Control System, including coke dry quenching furnace, overall deduster, coke dry quenching boiler are done
Put out stove and send into coke dry quenching boiler heat exchange after overall deduster is by high temperature circulation dedusting；Characterized in that, the entirety
Deduster is water-cooled cyclone dust collectors, and the upper ring header and lower ring header for being arranged at overall deduster top pass through tedge respectively
It is connected with coke dry quenching boiler drum with down-comer, forms the heat exchange water loop between overall deduster and coke dry quenching boiler drum,
The outlet for being arranged at the bottom heat-exchanging tube bundle of overall deduster bottom is connected with dry quenched coke boiler economizer, import and dry coke quenching pot
Stove feedwater piping is connected.
2. it is according to claim 1 it is a kind of can high efficiente callback heat energy CDQ Emission Control System, it is characterised in that it is described whole
Body deduster includes recyclegas entrance, recyclegas outlet, cyclone separator, gas burner, cooling chamber, top heat exchanger tube
Beam, upper ring header, lower ring header, bottom heat-exchanging tube bundle, recyclegas entrance are arranged on the upper position of overall deduster, circulation
Gas vent is arranged on the symmetrical center positions on overall deduster top, recyclegas entrance and recyclegas outlet respectively with rotation
Wind separator is connected；Cooling chamber is arranged on the bottom of cyclone separator, and gas burner is arranged on cyclone separator and cooling chamber
Between；Top heat-exchanging tube bundle is arranged in the wall of cyclone separator, the ring header on cyclone separator top is set, in whirlwind
The bottom of separator sets lower ring header, and heat-exchanging tube bundle outlet in top is connected with upper ring header, and top heat-exchanging tube bundle import is with
Ring header is connected；Portion's heat-exchanging tube bundle is set in the wall of cooling chamber.
3. it is according to claim 2 it is a kind of can high efficiente callback heat energy CDQ Emission Control System, it is characterised in that described
The air inlet of cyclone separator is provided with shutter.
4. it is according to claim 2 it is a kind of can high efficiente callback heat energy CDQ Emission Control System, it is characterised in that described
The lower end of recyclegas entrance is provided with back material hole and is connected with cyclone separator.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621218035.3U CN206244715U (en) | 2016-11-11 | 2016-11-11 | A kind of CDQ Emission Control System of energy high efficiente callback heat energy |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621218035.3U CN206244715U (en) | 2016-11-11 | 2016-11-11 | A kind of CDQ Emission Control System of energy high efficiente callback heat energy |
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| CN206244715U true CN206244715U (en) | 2017-06-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433700A (en) * | 2016-11-11 | 2017-02-22 | 中冶焦耐(大连)工程技术有限公司 | Coke dry quenching dust removal system and process capable of efficiently recovering heat energy |
| CN111684044A (en) * | 2018-09-13 | 2020-09-18 | 日铁工程技术株式会社 | Dry quenching device and method for removing coke powder in boiler of dry quenching device |
-
2016
- 2016-11-11 CN CN201621218035.3U patent/CN206244715U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106433700A (en) * | 2016-11-11 | 2017-02-22 | 中冶焦耐(大连)工程技术有限公司 | Coke dry quenching dust removal system and process capable of efficiently recovering heat energy |
| CN111684044A (en) * | 2018-09-13 | 2020-09-18 | 日铁工程技术株式会社 | Dry quenching device and method for removing coke powder in boiler of dry quenching device |
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