CN204735095U - Coke oven flue gas heat is equipped with system - Google Patents
Coke oven flue gas heat is equipped with system Download PDFInfo
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- CN204735095U CN204735095U CN201520394546.XU CN201520394546U CN204735095U CN 204735095 U CN204735095 U CN 204735095U CN 201520394546 U CN201520394546 U CN 201520394546U CN 204735095 U CN204735095 U CN 204735095U
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- coke oven
- flue gas
- heat exchanger
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- oven flue
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Abstract
The utility model discloses a coke oven flue gas heat is equipped with system, including coke oven, chimney, SCR denitrification facility, still include heat exchanger and desulfurizing tower, the coke oven passes through coke oven flue gas conveyer pipe and links to each other with chimney, SCR denitrification facility respectively, be equipped with the bypass damper door between coke oven and the chimney, be equipped with entry baffle door between coke oven and the SCR denitrification facility, SCR denitrification facility connects gradually heat exchanger, desulfurizing tower and sedimentation tank, the heat exchanger passes through coke oven flue gas conveyer pipe and links to each other with the chimney. The utility model discloses a set up the bypass damper door, under the unexpected outage circumstances appearing, the bypass damper door is automatic to be opened, and the coke oven flue gas directly gets into the chimney, can not produce any influence to the coke oven operation, newly -increased heat exchanger utilizes the flue gas to produce the hot -air and gets into the chimney, effectively solves chimney heat and is equipped with the problem, the technology maturation, operational reliability is high. The rare trouble of flue gas desulphurization device consequently can not be because of equipment trouble impact systems's safe operation.
Description
Technical field
The utility model relates to a kind of standby hot systems, specifically a kind of coke oven flue gas hot-backup system.
Background technology
Be not pass through blower fan after coke oven flue gas coking in current industry, but directly pass through smoke stack emission, principle is the temperature keeping 250-300 DEG C in chimney, can form the negative pressure of 300pa, be emitted by coke oven flue gas by pressure, if but run into the short time have a power failure, chimney is lowered the temperature, and the negative pressure of formation is inadequate, is difficult to flue gas to be discharged, containing a large amount of coal gas and air in pipeline, bring adverse effect safely to coking.
Utility model content
The purpose of this utility model is to provide a kind of coke oven flue gas hot-backup system, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the utility model provides following technical scheme:
A kind of coke oven flue gas hot-backup system, comprise coke oven, chimney, SCR denitration device, also comprise heat exchanger and desulfurizing tower, described coke oven is connected with chimney, SCR denitration device respectively by coke oven flue gas carrier pipe, by-pass damper door is provided with between described coke oven and chimney, be provided with inlet baffle door between described coke oven and SCR denitration device, described SCR denitration device connects heat exchanger, desulfurizing tower and sedimentation basin successively, and described heat exchanger is connected with chimney by coke oven flue gas carrier pipe.
Preferably, described by-pass damper door and inlet baffle door are electric guard board door.
Preferably, described by-pass damper door is selected and is established formula control system by cable, and described inlet baffle door selects electric enclosed control system.
Preferably, described heat exchanger is gas-gas heat exchanger, and gas-gas heat exchanger selects tubular heat exchanger.
Preferably, described heat exchanger side connects air blast.
Preferably, waste heat boiler is provided with between described SCR denitration device and heat exchanger.
Compared with prior art, the beneficial effects of the utility model are:
The utility model is by arranging by-pass damper door, and under there is accident power-off situation, by-pass damper door is opened automatically, and coke oven flue gas directly enters chimney, can not run produce any impact to coke oven; Newly-increased heat exchanger utilizes flue gas to produce hot-air and enters chimney, effectively solves the hot standby problem of chimney; Technology maturation, operational reliability is high.Flue gas desulfur device seldom breaks down, therefore can not because of the safe operation of equipment fault influential system.
Accompanying drawing explanation
Fig. 1 is the structural representation of coke oven flue gas hot-backup system.
Wherein, 1-coke oven, 2-by-pass damper door, 3-inlet baffle door, 4-chimney, 5-SCR denitrification apparatus, 6-waste heat boiler, 7-heat exchanger, 8-air blast, 9-desulfurizing tower, 10-sedimentation basin.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, in the utility model embodiment, a kind of coke oven flue gas hot-backup system, comprise coke oven 1, chimney 4, SCR denitration device 5, heat exchanger 7 and desulfurizing tower 9, described coke oven 1 is connected with chimney 4, SCR denitration device 5 respectively by coke oven flue gas carrier pipe, be provided with by-pass damper door 2 between described coke oven 1 and chimney 4, between described coke oven 1 and SCR denitration device 5, be provided with inlet baffle door 3.
Described SCR denitration device 5 connects waste heat boiler 6, heat exchanger 7 and desulfurizing tower 9 successively, and described heat exchanger 7 side connects air blast 8, and opposite side is connected with chimney 4 by coke oven flue gas carrier pipe, and described desulfurizing tower 9 is connected with sedimentation basin 10.
Preferably, described by-pass damper door 2 and inlet baffle door 3 are electric guard board door, and wherein by-pass damper door 2 is selected and established formula control system by cable, and namely during system blackout, by-pass damper door is automatic open mode.It also comprises a locking system run with desulfurizer booster fan, namely when the booster fan power-off of desulfurizer or fault out of service time, by-pass damper door 2 is opened automatically, and coke oven flue gas directly enters smoke stack emission through by-pass damper door 2, can not produce any impact to original coke oven.Described inlet baffle door 3 selects electric enclosed control system, and namely during system blackout, inlet baffle door 3 is automatic closed condition.
Preferably, described heat exchanger 7 is gas-gas heat exchanger, and gas-gas heat exchanger selects tubular heat exchanger, and material Q235, flue gas passes through outside tubulation, passes through cooling-air in tubulation.
Coke oven flue gas temperature after waste heat boiler 6 recovery waste heat is down to 150-170 DEG C, and through heat exchanger 7, temperature is down to 120-140 DEG C, enters desulfurizing tower 8.Air is blasted by air blast 8, and air blast 8 air quantity is 10000m
3/ h, stagnation pressure 1kpa.Air becomes 120-140 DEG C of hot-air and sends into coke oven chimney 4 after flue gas heat exchange, effectively can solve the hot standby problem of chimney.
Described desulfurizing tower comprises doctor solution recirculating system, absorption tower, spray contact system, defogger system.Capital equipment has absorption tower, circulation liquid pool, circulating pump etc.Desulfuration solution, after circulating pump iterative cycles, generates certain density calcium sulfite solution, delivers to sedimentation basin 10 reclaim when solution total concentration reaches about 15%, and desulfuration efficiency, up to 95%, can meet environmental protection SO
2discharge is lower than 30mg/Nm
3requirement.
Operation principle of the present utility model is: when normally working, coke oven flue gas in coke oven 1 enters SCR denitration device 5 by pipeline and reacts, reacted flue gas enter waste heat boiler 6 recovery waste heat after temperature be down to 150-170 DEG C, through heat exchanger 7, temperature is down to 120-140 DEG C, enter desulfurizing tower 8 and carry out desulfurization, when entering desulfurizing tower 8, flue-gas temperature is 60-70 DEG C, and the flue gas after desulfurization totally can directly discharge; When there is accident power-off, by-pass damper door is in be opened automatically, coke oven flue gas directly enters chimney 4, can not run coke oven and produce any impact, and only having 60-70 DEG C in the flue-gas temperature of desulfurizing tower 8, flue gas becomes 120-140 DEG C of hot-air after heat exchanger 7 heat exchange, and in chimney 4, pressure reaches 200 handkerchiefs, namely reach safety in production requirement, thus flue gas is discharged through chimney 4.
To those skilled in the art, obvious the utility model is not limited to the details of above-mentioned one exemplary embodiment, and when not deviating from spirit of the present utility model or essential characteristic, can realize the utility model in other specific forms.Therefore, no matter from which point, all should embodiment be regarded as exemplary, and be nonrestrictive, scope of the present utility model is limited by claims instead of above-mentioned explanation, and all changes be therefore intended in the implication of the equivalency by dropping on claim and scope are included in the utility model.Any Reference numeral in claim should be considered as the claim involved by limiting.
In addition, be to be understood that, although this description is described according to embodiment, but not each embodiment only comprises an independently technical scheme, this narrating mode of description is only for clarity sake, those skilled in the art should by description integrally, and the technical scheme in each embodiment also through appropriately combined, can form other embodiments that it will be appreciated by those skilled in the art that.
Claims (6)
1. a coke oven flue gas hot-backup system, comprise coke oven (1), chimney (4), SCR denitration device (5), it is characterized in that, also comprise heat exchanger (7) and desulfurizing tower (9), described coke oven (1) by coke oven flue gas carrier pipe respectively with chimney (4), SCR denitration device (5) is connected, by-pass damper door (2) is provided with between described coke oven (1) and chimney (4), inlet baffle door (3) is provided with between described coke oven (1) and SCR denitration device (5), described SCR denitration device (5) connects heat exchanger (7) successively, desulfurizing tower (9) and sedimentation basin (10), described heat exchanger (7) is connected with chimney (4) by coke oven flue gas carrier pipe.
2. coke oven flue gas hot-backup system according to claim 1, is characterized in that, described by-pass damper door (2) and inlet baffle door (3) are electric guard board door.
3. coke oven flue gas hot-backup system according to claim 2, is characterized in that, described by-pass damper door (2) is selected and established formula control system by cable, and described inlet baffle door (3) selects electric enclosed control system.
4. coke oven flue gas hot-backup system according to claim 1, is characterized in that, described heat exchanger (7) is gas-gas heat exchanger, and described gas-gas heat exchanger selects tubular heat exchanger.
5. coke oven flue gas hot-backup system according to claim 1, is characterized in that, described heat exchanger (7) side connects air blast (8).
6. coke oven flue gas hot-backup system according to claim 1, is characterized in that, is provided with waste heat boiler (6) between described SCR denitration device (5) and heat exchanger (7).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394546.XU CN204735095U (en) | 2015-06-08 | 2015-06-08 | Coke oven flue gas heat is equipped with system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394546.XU CN204735095U (en) | 2015-06-08 | 2015-06-08 | Coke oven flue gas heat is equipped with system |
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| CN204735095U true CN204735095U (en) | 2015-11-04 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771638A (en) * | 2016-05-06 | 2016-07-20 | 济南大学 | Desulfurization and denitrification method and device for hot sparing of coke oven chimney by using coke oven flue gas |
| CN106352314A (en) * | 2016-10-19 | 2017-01-25 | 北京京诚科林环保科技有限公司 | Remained energy utilization system for coke oven flue gas |
| CN107158907A (en) * | 2017-06-29 | 2017-09-15 | 大连好月亮环保科技有限公司 | Oxidation plus wet absorption flue gas desulfurization and denitrification integral method and its device |
| CN110332814A (en) * | 2019-07-10 | 2019-10-15 | 成渝钒钛科技有限公司 | A kind of waste heat of coke-oven flue gas utilizes device and method thereof |
-
2015
- 2015-06-08 CN CN201520394546.XU patent/CN204735095U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771638A (en) * | 2016-05-06 | 2016-07-20 | 济南大学 | Desulfurization and denitrification method and device for hot sparing of coke oven chimney by using coke oven flue gas |
| CN105771638B (en) * | 2016-05-06 | 2018-08-21 | 济南大学 | Utilize the desulfurization denitration method and device of the hot standby coke oven chimney of coke oven flue gas |
| CN106352314A (en) * | 2016-10-19 | 2017-01-25 | 北京京诚科林环保科技有限公司 | Remained energy utilization system for coke oven flue gas |
| CN107158907A (en) * | 2017-06-29 | 2017-09-15 | 大连好月亮环保科技有限公司 | Oxidation plus wet absorption flue gas desulfurization and denitrification integral method and its device |
| CN110332814A (en) * | 2019-07-10 | 2019-10-15 | 成渝钒钛科技有限公司 | A kind of waste heat of coke-oven flue gas utilizes device and method thereof |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180411 Address after: 433226 Jingzhou City, Honghu, China Town, the city of road, No. 23 Patentee after: HUBEI SIBOYING ENVIRONMENTAL PROTECTION TECHNOLOGY CO., LTD. Address before: 230001 Anhui Hefei high tech Zone Innovation Avenue 2800 Hefei innovation industrial park two phase F1 building 202, 203 Patentee before: Hefei Chen Xi Ingegneria Ambientale SRL |
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| TR01 | Transfer of patent right |