CN203291682U - Double-protection safety device for sintering flue gas desulfurization and denitrification through activated carbon - Google Patents
Double-protection safety device for sintering flue gas desulfurization and denitrification through activated carbon Download PDFInfo
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- CN203291682U CN203291682U CN2013203019072U CN201320301907U CN203291682U CN 203291682 U CN203291682 U CN 203291682U CN 2013203019072 U CN2013203019072 U CN 2013203019072U CN 201320301907 U CN201320301907 U CN 201320301907U CN 203291682 U CN203291682 U CN 203291682U
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Abstract
The utility model discloses a double-protection safety device for sintering flue gas desulfurization and denitrification through activated carbon. The double-protection safety device comprises a nitrogen gas pipeline and is characterized by further comprising an argon gas pipeline, wherein the nitrogen gas pipeline is connected with the argon gas pipeline; an electric valve and a pressure gauge are arranged on the argon pipeline; one-way check valves are respectively arranged on the argon gas pipeline and the nitrogen gas pipeline. According to the double-protection safety device, the high-pressure argon pipeline is additionally arranged in the flue gas treatment system of a sintering machine and serves as a standby gas source of nitrogen. Therefore, under an emergency condition, not only argon gas can be pumped into an adsorption tower to isolate air so as to prevent activated carbon ignition accidents, but also SRG carrier gas and instrument air can be provided so as to keep the normal use of all pneumatic valves at each part after nitrogen gas supply is cut off.
Description
Technical field
The utility model relates to the two devices that ensure safety of a kind of sinter fume active carbon desulfurization denitration.
Background technology
Taiyuan Iron and Steel Co. 450m
2Sintering machine and new 450 m
2Sintering device flue gas is processed the active carbon mobile layer desulphurization denitration technology of selecting.This technology main technique is that sinter fume is introduced in the adsorption tower of system for desulfuration and denitration and (is about 500-1500m greatly according to the many micropores of active carbon, specific area
2/ g) characteristic, carry out multiple harmful substances (SO by physics and chemical reaction
2, NOx, bioxin, heavy metal, dust etc.) absorption, adsorbed the active carbon of sulfide, through conveyer, deliver to Analytic Tower, here active carbon moves from top to bottom, at first pass through bringing-up section, be heated to more than 400 ℃, the material that active carbon is adsorbed parses.Rich sulfur dioxide gas (" SRG ") drains into acid making system by nitrogen as carrier gas, prepares sulfuric acid.
because sinter fume reaches 140 ~ 160 ℃ in main exhauster of sintering exit temperature, before through the system for desulfuration and denitration booster fan and with addition of cold wind, entering system for desulfuration and denitration, control flue-gas temperature at 130 ℃, flue gas enters in system for desulfuration and denitration, after active carbon generation chemical reaction, make 10 ℃ of left and right of active carbon temperature rising, as the sinter fume temperature, control bad, when temperature reaches more than 140 ℃, enter in system for desulfuration and denitration, make the active carbon temperature increase gradually, as while reaching 165 ℃, think that namely active carbon has produced focus, must be by adsorption tower and flue gas isolation, and pass into a large amount of nitrogen, with air in isolated tower, prevent active carbon generation firing accident in adsorption tower.Simultaneously, if the adsorption tower discharging equipment breaks down, in tower, active carbon is detained for a long time, and its temperature also can rise gradually, and also must pass into a large amount of nitrogen this moment.
Main application and the consumption of nitrogen in system for desulfuration and denitration is:
(1) after in adsorption tower, the active carbon temperature reaches focus, in tower, pass into a large amount of nitrogen with air in isolated tower, prevent active carbon generation firing accident in adsorption tower.Consumption is about: 6000m
3/ h, and the time that passes into nitrogen should decide according to the temperature of active carbon in tower, be generally more than 2 hours, consumption is greatly about 12000m
3Above;
(2) after in adsorption tower, the active carbon temperature reaches focus, must close adsorption tower smoke entrance electric gear plate valve, by adsorption tower and flue gas isolation, and pass into nitrogen in double-deck flapper valve, to prevent flue gas condensing post-etching flapper valve.Consumption is about: 800m
3/ h, be generally more than 2 hours, and consumption is greatly about 1600m
3Above;
(3) carrier gas of conduct " rich sulfur dioxide gas " (" SRG ").Consumption is about: 700m
3/ h.
(4) for each pneumatic operated valve in system for desulfuration and denitration, provide source of the gas.Consumption is about: 200m
3/ h.
(5) system for desulfuration and denitration ammonia station and ignition furnace gas displacement.
In order to guarantee in the state of accident, nitrogen use level is not subjected to the impact of extraneous other factors, in prior art, takes to arrange nitrogen storage tank and guarantees that nitrogen can normally use in the state of accident, and according to consumption, native system should arrange the air accumulator that volume is about 15000m3.The drawback that nitrogen storage tank is set is: (1) has increased production site; (2) hazards of site environment have been increased; (3) gas-storing capacity is limited.
Summary of the invention
In order to overcome above-mentioned deficiency, the utility model provides the denitration of a kind of sinter fume active carbon desulfurization two devices that ensure safety, the sintering device flue gas treatment system is set up the bailout gas of a road pipe high-pressure argon gas as nitrogen, because argon gas is also inert gas, not only can be in the state of accident to passing into argon gas in adsorption tower, with isolated air, prevent the active carbon firing accident, and can in nitrogen, have no progeny, provide SRG carrier gas and instrument air can normally use for each pneumatic operated valve.
The technical solution adopted in the utility model is: the two devices that ensure safety of a kind of sinter fume active carbon desulfurization denitration, comprise nitrogen pipeline, it is characterized in that: also comprise the argon gas pipeline, the argon gas pipeline is connected with nitrogen pipeline, the argon gas pipeline is provided with motor-driven valve and Pressure gauge, on argon gas pipeline and nitrogen pipeline, is equipped with inlet non return check valve.
The caliber of described argon gas pipeline is 150mm, and pipeline pressure is 2.5 ~ 3.0MPa.
According to consumption, this high pressure argon gas pipeline is designed to: caliber: DN150mm, pressure: 2.5 ~ 3.0MPa, before system for desulfuration and denitration nitrogen surge tank, be connected with nitrogen header pipe.Motor-driven valve is set can realizes Long-distance Control on the argon gas pipeline; Simultaneously on argon gas pipeline and nitrogen pipeline, inlet non return check valve is set, prevents that nitrogen, argon gas from falling to go here and there.When system for desulfuration and denitration stops when security gas nitrogen, by the motor-driven valve argon gas that automatically switches, desulphurization system is in a safe condition.
The two devices that ensure safety of the sinter fume active carbon desulfurization denitration that the utility model provides, by in the sintering device flue gas treatment system, setting up the bailout gas of a road high pressure argon gas pipeline as nitrogen, not only can in adsorption tower, pass into the generation that argon gas works to prevent the active carbon firing accident in the state of accident, and can in nitrogen, have no progeny, provide SRG carrier gas and instrument air can normally use for each pneumatic operated valve.
Below in conjunction with drawings and Examples, the utility model is described further.
The accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure, 1 is the argon gas pipeline, and 2 is nitrogen pipeline, and 3 is motor-driven valve, and 4,5 is inlet non return check valve, and 6 is the nitrogen surge tank, and 7 is the instrument nitrogen tube, and 8 is technique and accident nitrogen tube, and 9 is the guard seal nitrogen tube.
The specific embodiment
Embodiment:
As shown in Figure 1, the two devices that ensure safety of a kind of sinter fume active carbon desulfurization denitration, comprise nitrogen pipeline 2, it is characterized in that: also comprise argon gas pipeline 1, argon gas pipeline 1 is connected with nitrogen pipeline 2, argon gas pipeline 1 is provided with motor-driven valve 3 and Pressure gauge, on argon gas pipeline 1 and nitrogen pipeline 2, is equipped with inlet non return check valve 4,5.Argon gas pipeline 1, before system for desulfuration and denitration nitrogen surge tank 6, is connected with nitrogen pipeline 2.Nitrogen is as security gas, through nitrogen surge tank 6 by different pipelines to system output security gas, if anything crops up or nitrogen interrupt, the argon gas pipeline uses as the bailout gas of nitrogen.
This high pressure argon gas pipeline is designed to: caliber: DN150mm, pressure: 2.5 ~ 3.0MPa.
The two devices that ensure safety of the utility model sinter fume active carbon desulfurization denitration are on probation in Taiyuan Iron and Steel Co. 450m2 sintering machine and new 450m2 flue gas of sintering machine denitrating system, have greatly guaranteed this security of system, stable operation.
Claims (2)
1. two devices that ensure safety of sinter fume active carbon desulfurization denitration, comprise nitrogen pipeline, it is characterized in that: also comprise the argon gas pipeline, the argon gas pipeline is connected with nitrogen pipeline, the argon gas pipeline is provided with motor-driven valve and Pressure gauge, on argon gas pipeline and nitrogen pipeline, is equipped with inlet non return check valve.
2. two devices that ensure safety of sinter fume active carbon desulfurization according to claim 1 denitration, it is characterized in that: the caliber of described argon gas pipeline is 150mm, pipeline pressure is 2.5 ~ 3.0MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203019072U CN203291682U (en) | 2013-05-29 | 2013-05-29 | Double-protection safety device for sintering flue gas desulfurization and denitrification through activated carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203019072U CN203291682U (en) | 2013-05-29 | 2013-05-29 | Double-protection safety device for sintering flue gas desulfurization and denitrification through activated carbon |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203291682U true CN203291682U (en) | 2013-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203019072U Expired - Fee Related CN203291682U (en) | 2013-05-29 | 2013-05-29 | Double-protection safety device for sintering flue gas desulfurization and denitrification through activated carbon |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195200A (en) * | 2017-06-16 | 2018-06-22 | 中冶长天国际工程有限责任公司 | Anti- external combustion gas blowing device and its combustion gas blowing method |
| CN108479296A (en) * | 2018-03-22 | 2018-09-04 | 中国科学院过程工程研究所 | A kind of adsorption tower overtemperature duplicate protection system |
| CN109331651A (en) * | 2018-11-29 | 2019-02-15 | 国电环境保护研究院有限公司 | A kind of shielding system and partition method of desulphurization denitration tower |
| CN112403183A (en) * | 2020-01-07 | 2021-02-26 | 中冶长天国际工程有限责任公司 | Method and system for detecting production safety of analytical tower |
-
2013
- 2013-05-29 CN CN2013203019072U patent/CN203291682U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108195200A (en) * | 2017-06-16 | 2018-06-22 | 中冶长天国际工程有限责任公司 | Anti- external combustion gas blowing device and its combustion gas blowing method |
| CN108195200B (en) * | 2017-06-16 | 2023-12-29 | 中冶长天国际工程有限责任公司 | External combustion preventing type fuel gas injection device and fuel gas injection method thereof |
| CN108479296A (en) * | 2018-03-22 | 2018-09-04 | 中国科学院过程工程研究所 | A kind of adsorption tower overtemperature duplicate protection system |
| CN109331651A (en) * | 2018-11-29 | 2019-02-15 | 国电环境保护研究院有限公司 | A kind of shielding system and partition method of desulphurization denitration tower |
| CN112403183A (en) * | 2020-01-07 | 2021-02-26 | 中冶长天国际工程有限责任公司 | Method and system for detecting production safety of analytical tower |
| CN112403183B (en) * | 2020-01-07 | 2022-05-03 | 中冶长天国际工程有限责任公司 | Method and system for detecting production safety of analytical tower |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131120 Termination date: 20190529 |