CN106479524A - A kind of coke dry quenching boiler blowdown reusing device for waste water and technique - Google Patents
A kind of coke dry quenching boiler blowdown reusing device for waste water and technique Download PDFInfo
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- CN106479524A CN106479524A CN201611005115.5A CN201611005115A CN106479524A CN 106479524 A CN106479524 A CN 106479524A CN 201611005115 A CN201611005115 A CN 201611005115A CN 106479524 A CN106479524 A CN 106479524A
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- dry quenching
- coke dry
- blowdown
- sealed tank
- water
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B39/00—Cooling or quenching coke
- C10B39/02—Dry cooling outside the oven
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
A kind of coke dry quenching boiler blowdown reusing device for waste water and technique, device includes periodical blowdown expander, continuous blowdown expander, coke dry quenching furnace, also include sewage well, dredge pump, liquid level gauge, in the downstream of periodical blowdown expander, sewage well is set, dredge pump is arranged in sewage well, dredge pump connects the water sealed tank of coke dry quenching furnace porch by pipeline, three pipeline heaters are provided with connecting pipe of the dredge pump with water sealed tank, connect the steam connection tube road of continuous blowdown expander and oxygen-eliminating device respectively, the steam releasing pipeline of periodical blowdown expander and the steam releasing pipeline of sewage well；Liquid level gauge is provided with sewage well, is also equipped with liquid level gauge in the water sealed tank of coke dry quenching furnace.The present invention delivers to the sewer pressurization in coke dry quenching boiler sewage well in coke dry quenching furnace water sealed tank, and sewer is heated by the steam waste heat of boiler, it is therefore prevented that the cracking of water sealed tank, effectively achieves the recycling of coke dry quenching boiler sewer.
Description
Technical field
The present invention relates to the dry coke quenching process system of coking, field of metallurgy, more particularly to a kind of coke dry quenching boiler sewer
Boiler blowdown water recycling technique for coke dry quenching furnace water sealed tank.
Background technology
The quality of coke dry quenching boiler feedwater be affect that boiler steam and water circuit is safe and stable and the key factor of economical operation it
One, such as：It is likely to result in coke dry quenching boiler boiler circuit fouling, salification and corrosion etc..In order that the water quality index of boiler feedwater reaches
Require to related standard, it is necessary to raw water is processed, such as：Precipitate, filter, hardness, desalination, deoxygenation etc. removed, to ensure to do
The safe operation of quenching boiler.Even so, coke dry quenching boiler boiler circuit still can produce certain amount in running
Salt and impurity, will corrode heating surface, impact heat exchange or blocking pipeline.Therefore, coke dry quenching boiler adopts drainage
" waste " is discharged.Drainage is divided into two parts of continuous blowdown and periodical blowdown：Continuity blowdown is continuously
Water higher for salt content inside boiler-steam dome is discharged in continuous blowdown expander, to ensure the salt content control of boiler internal
System is within normal range (NR)；Periodical blowdown is periodically the impurity of boiler internal, grain slag to be discharged into periodical blowdown expander
In, to avoid pipeline scale or blocking.
Require that the water amount of blowdown of the above boiler of medium temperature and medium pressure parameter should be no more than the specified evaporation of boiler according to national standard
(1～2) % of amount.This part sewer enters sewage well outer row after supercooling by blowdown expander.And boiler blowdown water
The index such as hardness be better than industry water, be the water of relative " clean ", and temperature be also higher, directly outer row is uneconomical
's.As a example by coke dry quenching boiler with rated capacity as 100t/h, the water amount of blowdown of boiler is 80 DEG C of (1～2) t/h, ＞, " straight
Connect " outward row be the very big waste to water resource.Therefore, the recycling of coke dry quenching boiler sewer is imperative.
Coke dry quenching furnace furnace roof is provided with water sealed tank, to solve the sealing problem of furnace roof.Under normal circumstances, the sealing hydromining of water sealed tank
With industry water or recirculated cooling water (this kind of hardness of water is than larger).In running, the easy fouling of water sealed tank, bottom are usually attached
The attachment of poor thermal conductivity or is bonded with, when industry water or recirculated cooling water is supplemented, as the cold and hot temperature difference easily causes water
Sealing groove strain cracking.And there is no asking for fouling far below industry water or recirculated cooling water in coke dry quenching boiler blowdown hardness of water
Topic, and temperature is higher.Therefore, industry water or recirculated cooling water is replaced to seal as water sealed tank using coke dry quenching boiler sewer
Supplement water and can solve water sealed tank problem of Cracking, it is ensured that the safe operation of water sealed tank.
The patent document of Application No. 201610096544.1 discloses a kind of " boiler blowdown water for dry quenching system
Processing meanss and method " is to pass sequentially through to determine boiler blowdown water row's flash vessel, cooler, water tank, supercharging and be pumped to water sealed tank
Interior；The patent is achieved has carried out recycling using boiler blowdown water as the supplementary water of water sealed tank sealing, but the patent is
Boiler blowdown water is sent into water sealed tank after subcooler cooling, causes sewer to be increased with the water sealed tank temperature difference further, water seal
Groove easily causes, due to thermal stress, the phenomenon for ftractureing.
In addition, the patent document is to arrange balanced reservoir, water sealed tank water level and water sealed tank overflow at charging apparatus platform
Mouth edge maintains an equal level, and water gravity flow enters water sealed tank, and this method can cause water endlessly to overflow by water sealed tank.
Content of the invention
It is an object of the invention to provide a kind of coke dry quenching boiler blowdown reusing device for waste water and technique, will be dry using dredge pump
Sewer pressurization in quenching boiler blow-off well is delivered in coke dry quenching furnace water sealed tank, and sewer is entered by the steam waste heat of boiler
Row heating, makes blowdown coolant-temperature gage be close with water temperature in coke dry quenching furnace water sealed tank, it is therefore prevented that the cracking of water sealed tank.By water seal tank liquor
The interlock connection of position, sewage well liquid level and dredge pump ensures the utilization rate of sewer.Coke dry quenching boiler blowdown is effectively achieved
The recycling of water.
In order to achieve the above object, the present invention employs the following technical solutions realization：
A kind of coke dry quenching boiler blowdown reusing device for waste water, including periodical blowdown expander, continuous blowdown expander, dry puts out
Stove, also includes sewage well, dredge pump, liquid level gauge, arranges sewage well in the downstream of periodical blowdown expander, and dredge pump is arranged on row
In dirty well, dredge pump connects the water sealed tank of coke dry quenching furnace porch by pipeline, sets on connecting pipe of the dredge pump with water sealed tank
Three pipeline heaters are equipped with, respectively the steam connection tube road of connection continuous blowdown expander and oxygen-eliminating device, periodical blowdown expansion
The steam releasing pipeline of device and the steam releasing pipeline of sewage well；Liquid level gauge is provided with sewage well, in the water seal of coke dry quenching furnace
Liquid level gauge is also equipped with groove, is provided with temperature instrument on the inlet channel of water sealed tank sewer.
A kind of technique coke dry quenching boiler sewer recycled using coke dry quenching boiler blowdown reusing device for waste water,
Concrete grammar is as follows：
The sewer pressurization in coke dry quenching boiler sewage well is delivered in coke dry quenching furnace water sealed tank using dredge pump, by sewer
Position and dredge pump interlocking, and control the water level of coke dry quenching furnace water sealed tank；
Pipeline heater is set on sewer pipeline, when blowdown pump operation, using boiler periodical blowdown expander, even
Continuous blowdown expander, the steam of sewage well are heated to sewer, reach the blowdown coolant-temperature gage for delivering to coke dry quenching furnace water sealed tank
85 DEG C～95 DEG C；
When dredge pump is out of service, the steam of continuous blowdown expander delivers to oxygen-eliminating device, and to carry out deoxygenation, periodical blowdown swollen
Swollen device and the steam releasing of sewage well.
Compared with prior art, the invention has the beneficial effects as follows：
A kind of coke dry quenching boiler blowdown reusing device for waste water and technique, using dredge pump by coke dry quenching boiler sewage well
Sewer pressurization is delivered in coke dry quenching furnace water sealed tank, and the waste heat for diffusing steam by recovery boiler is heated to sewer, is made
Blowdown coolant-temperature gage is close with water temperature in coke dry quenching furnace water sealed tank, it is therefore prevented that the cracking of water sealed tank, effectively achieves dry coke quenching pot
The recycling of fire grate sewage.Coke dry quenching furnace water sealed tank water level is interlocked with dredge pump by the present invention by automatic control system
Control, and control is synchronized to blowdown coolant-temperature gage, it is ensured that the safe operation of water sealed tank.
Description of the drawings
Fig. 1 is a kind of structural representation of coke dry quenching boiler blowdown reusing device for waste water of the present invention.
In figure：1- continuous blowdown expander, 2- periodical blowdown expander, 3- sewage well, 4- dredge pump, 5- liquid level gauge, 6-
Central processing unit, 7- coke dry quenching furnace, 8- water sealed tank, 9- pipeline heater, 10- temperature instrument, 11- valve.
Specific embodiment
Specific embodiment to the present invention is described further below in conjunction with the accompanying drawings：
A kind of coke dry quenching boiler blowdown reusing device for waste water, including periodical blowdown expander 2, continuous blowdown expander 1, does
Stove 7 is put out, also includes sewage well 3, dredge pump 4, liquid level gauge 5, sewage well 3, dredge pump are set in the downstream of periodical blowdown expander 2
4 are arranged in sewage well 3, and dredge pump 4 connects the water sealed tank 8 of 7 porch of coke dry quenching furnace by pipeline, and water sealed tank 8 arranges 4 blowdowns
Water water inlet (3 open 1 standby), the uniformity of the sewer water level at utmost ensureing to enter water sealed tank, in dredge pump 4 and water sealed tank
Three pipeline heaters 9 are provided with 8 connecting pipe, and connection continuous blowdown expander 1 is connected with the steam of oxygen-eliminating device respectively
The steam releasing pipeline of pipeline, the steam releasing pipeline of periodical blowdown expander 2 and sewage well 3；Liquid is provided with sewage well 3
Position meter 5, is also equipped with liquid level gauge 5 in the water sealed tank 8 of coke dry quenching furnace 7, is provided with temperature on the inlet channel of 8 sewer of water sealed tank
Degree instrumentation 10.
Pipeline heater 9 is the closed casing being socketed on sewer pipeline, and internal and sewer pipeline communication, pipeline add
Steam inlet on hot device 9 connects steam releasing pipeline and the company of periodical blowdown expander 2 and 3 upper end of sewage well by pipeline
The steam connection tube road of continuous blowdown expander 1 and oxygen-eliminating device, is blowdown by pipeline heater 9 to sewer pipe-dredging steam
Water is heated.Valve 11, the valve on 9 steam inlet pipeline of pipeline heater is provided with 9 steam inlet pipeline of pipeline heater
11 and the jet chimney valve of periodical blowdown expander 2, continuous blowdown expander 1 and 3 upper end of sewage well connect central authorities respectively
Processor 6, is provided with temperature instrument 10 on the inlet channel of 8 sewer of water sealed tank, and temperature instrument 10 will collection
Sewer temperature signal be transferred to central processing unit 6, controlled the unlatching of the valve on each jet chimney by central processing unit, from
And the temperature of the steam flow in control pipeline heater 9 and sewer.
Liquid level gauge 5 in sewage well 3 is connected central processing unit 6 respectively with the liquid level gauge in water sealed tank 8, and level sensing is believed
Number be transferred to central processing unit 6, central processing unit 6 according to the flow of liquid level signal control of sewage disposal pump 4, to dredge pump 4
Lock control.
A kind of technique coke dry quenching boiler sewer recycled using coke dry quenching boiler blowdown reusing device for waste water,
Concrete grammar is as follows：
The sewer pressurization in coke dry quenching boiler sewage well 3 is delivered in 7 water sealed tank 8 of coke dry quenching furnace using dredge pump 4, will row
Sewage position is interlocked with dredge pump 4, and controls the water level of 7 water sealed tank 8 of coke dry quenching furnace；
Pipeline heater 9 is set on sewer pipeline, when dredge pump 4 runs, using boiler periodical blowdown expander
2nd, continuous blowdown expander 1, the steam of sewage well 3 are heated to sewer, make to deliver to the sewer of 7 water sealed tank 8 of coke dry quenching furnace
Temperature reaches 85 DEG C～95 DEG C；
When dredge pump 4 is out of service, the steam of continuous blowdown expander 1 delivers to oxygen-eliminating device carries out deoxygenation, periodical blowdown
Expander 2 and the steam releasing of sewage well 3.
The steam of continuous blowdown system of boiler expander 1 is used for oxygen-eliminating device deoxygenation at present, and the steam of periodical blowdown expander 2 is put
Dissipate, the steam releasing of boiler blow-off well 3.Diffusing for steam is a kind of waste, and the present invention is arranged by continuous blowdown expander 1, periodically
The steam of dirty expander 2, the steam of sewage well 3 carry out integration recycling, and the sewer to delivering to water sealed tank 8 is heated, and is filled
Divide ground that steam is recycled, the temperature difference between sewer and water sealed tank 8 is reduced, effectively prevent the cracking of water sealed tank 8.
Claims (2)
1. a kind of coke dry quenching boiler blowdown reusing device for waste water, including periodical blowdown expander, continuous blowdown expander, dry puts out
Stove, it is characterised in that also include sewage well, dredge pump, liquid level gauge, arranges sewage well, row in the downstream of periodical blowdown expander
Dirty pump is arranged in sewage well, and dredge pump connects the water sealed tank of coke dry quenching furnace porch by pipeline, in dredge pump and water sealed tank
Be provided with three pipeline heaters on connecting pipe, respectively the steam connection tube road of connection continuous blowdown expander and oxygen-eliminating device,
The steam releasing pipeline of periodical blowdown expander and the steam releasing pipeline of sewage well；Liquid level gauge is provided with sewage well,
Liquid level gauge is also equipped with the water sealed tank of coke dry quenching furnace, on the inlet channel of water sealed tank sewer, is provided with temperature instrument.
2. one kind is entered to coke dry quenching boiler sewer using coke dry quenching boiler blowdown reusing device for waste water as claimed in claim 1
The technique that row is recycled, it is characterised in that concrete grammar is as follows：
Using dredge pump by coke dry quenching boiler sewage well sewer pressurization deliver in coke dry quenching furnace water sealed tank, by blowdown water level with
Dredge pump is interlocked, and controls the water level of coke dry quenching furnace water sealed tank；
Pipeline heater is set on sewer pipeline, when blowdown pump operation, using boiler periodical blowdown expander, continuous row
Dirty expander, the steam of sewage well are heated to sewer, make the blowdown coolant-temperature gage for delivering to coke dry quenching furnace water sealed tank reach 85 DEG C
～95 DEG C；
When dredge pump is out of service, the steam of continuous blowdown expander delivers to oxygen-eliminating device carries out deoxygenation, periodical blowdown expander
Steam releasing with sewage well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611005115.5A CN106479524B (en) | 2016-11-11 | 2016-11-11 | Dry quenching boiler sewage recycling device and process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611005115.5A CN106479524B (en) | 2016-11-11 | 2016-11-11 | Dry quenching boiler sewage recycling device and process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106479524A true CN106479524A (en) | 2017-03-08 |
| CN106479524B CN106479524B (en) | 2022-05-06 |
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ID=58272255
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611005115.5A Active CN106479524B (en) | 2016-11-11 | 2016-11-11 | Dry quenching boiler sewage recycling device and process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106479524B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517380A (en) * | 2020-03-31 | 2020-08-11 | 临涣焦化股份有限公司 | Comprehensive recycling system for coke dry quenching wastewater |
| CN113551220A (en) * | 2021-07-22 | 2021-10-26 | 广东鸿业建材科技有限公司 | Based on boiler waste heat recovery utilizes system |
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| CN103836606A (en) * | 2012-11-25 | 2014-06-04 | 哈尔滨弘盛电力设备有限公司 | Sewerage waste heat recovery device |
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| CN105542801A (en) * | 2016-02-22 | 2016-05-04 | 山东钢铁股份有限公司 | Boiler-discharged-wastewater treating device and method for coke dry quenching system |
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Patent Citations (5)
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| JP4074521B2 (en) * | 2003-01-16 | 2008-04-09 | 新日本製鐵株式会社 | Combustible gas recovery method during biomass processing in CDQ |
| WO2006135711A2 (en) * | 2005-06-10 | 2006-12-21 | Nanologix, Inc. | System for sustained microbial production of hydrogen gas in a bioreactor |
| CN103836606A (en) * | 2012-11-25 | 2014-06-04 | 哈尔滨弘盛电力设备有限公司 | Sewerage waste heat recovery device |
| CN104633644A (en) * | 2014-12-10 | 2015-05-20 | 北京京诚科林环保科技有限公司 | Regularly-discharged waste water waste heat recycling system of converter waste heat boiler |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111517380A (en) * | 2020-03-31 | 2020-08-11 | 临涣焦化股份有限公司 | Comprehensive recycling system for coke dry quenching wastewater |
| CN113551220A (en) * | 2021-07-22 | 2021-10-26 | 广东鸿业建材科技有限公司 | Based on boiler waste heat recovery utilizes system |
| CN113551220B (en) * | 2021-07-22 | 2022-04-01 | 广东鸿业建材科技有限公司 | Based on boiler waste heat recovery utilizes system |
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|---|---|
| CN106479524B (en) | 2022-05-06 |
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