CN101570808A - Dry converter coal gas dust-removal system and explosion protection device thereof - Google Patents
Dry converter coal gas dust-removal system and explosion protection device thereof Download PDFInfo
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- CN101570808A CN101570808A CNA2009100857841A CN200910085784A CN101570808A CN 101570808 A CN101570808 A CN 101570808A CN A2009100857841 A CNA2009100857841 A CN A2009100857841A CN 200910085784 A CN200910085784 A CN 200910085784A CN 101570808 A CN101570808 A CN 101570808A
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Abstract
The invention relates to a dry converter coal gas dust-removal system and an explosion protection device thereof. The system comprises a cooling device, a dust remover, an explosion protection device, a draught fan and a switching station; an explosion protection device is connected with flue gas pipelines which are arranged between the cooling device and the dust remover, a draught fan connected with the dust remover and a switching station, wherein the explosion protection device comprises a gas composition analyzer, a gas injecting device and a control device, wherein the gas composition analyzer used for detecting CO and O2 content in the flue gas is arranged on the inlet flue gas pipeline of the dust remover; the gas injecting device is arranged on the flue gas pipelines which are arranged between the gas composition analyzer and the dust remover; the control device compares the CO and O2 content detected by the gas composition analyzer with explosion limit concentration to control the open or close of the gas injecting device; the draught fan is connected with the dust remover, the inlet of the switching station is connected with the draught fan, the outlet is respectively connected with a spread chimney and a coal gas cabinet and is in charge of switching set of flue gas pipelines between the spread chimney and the coal gas cabinet. The invention can reduce explosion rate of the dust remover.
Description
Technical field
The invention relates to a kind of converter gas dry-dedusting system and explosion-proof equipment thereof.
Background technology
As shown in Figure 1, oxygen that the oxygen rifle is blown in the steelmaking process and the carbon in the molten iron generate the flue gas that is rich in CO behind converter 19 ' internal reaction, entering evaporative cooler 12 ' after flue gas cools off through gasification cooling flue 11 ' directly cools off, discharge from evaporative cooler 12 ' with 160 ℃～220 ℃ temperature then, enter electrostatic precipitator 13 ' via flue and remove dust; By dust separating flue gas under the effect of induced draft fan 14 ', diffuse to entering that flue gas switches fast between chimney 16 ' or gas chamber 17 ' by switching station 15 ', between carbon period, the flue gas of high heating value is sent to gas chamber 17 ' after through gas cooler 18 ' cooling, and the low heat value flue gas that produces in oxygen blast initial stage and latter stage then is sent to and diffuses chimney 16 ' and burn.During stopping oxygen blast, flue gas is too via diffusing chimney 16 ' discharging.
The discontinuity and the specific smelting cycle of converter operation make air, waste gas (contain CO
2) and coal gas of converter (containing CO) alternating current cross electric precipitator and whole flue gas purification system.Mixed and burning (blast) suddenly takes place for fear of the gas of heterogeneity, according to hydromechanical principle, be designed to columnar electric precipitator and can provide best passage for gas flow, make the gas of heterogeneity be that piston-shaped flows and not mixed, the risk factor of burning (blast) suddenly takes place thereby eliminate gas.Electric precipitator shell import and export two ends are established and are unloaded quick-fried valve, unload quick-fried valve and carry out release in time when causing pressure surge, the protection electric precipitator when burning (blast) suddenly takes place.
However, experience shows that electric precipitator unloads the quality or the handling problem of quick-fried valve, exists to unload in the quick-fried process fly-ash separator internal polar plate, the localized vibration effect of polar curve, will interrupt oxygen blast because of unloading when quick-fried simultaneously, influences the works better of converter.Therefore, the blast problem restricts the development of coal gas of converter dry gas cleaning always, a lot of owners also with rate of explosion as a very important performance assessment criteria.
Therefore, need research and develop a kind of passive explosion-proof equipment that unloads quick-fried for active that becomes.
Summary of the invention
The present invention's purpose is, a kind of converter gas dry-dedusting system and explosion-proof equipment thereof are provided, and is used to reduce the rate of explosion of fly-ash separator, ensures fly-ash separator safe operation and converter ordinary production.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize,
A kind of explosion-proof equipment that is used for converter gas dry-dedusting system, it comprises: gas composition analyzer is used for detecting the CO and the O of flue gas
2Content, described gas composition analyzer is installed on the inlet flue gas pipeline of fly-ash separator of described converter gas dry-dedusting system; Gas injection apparatus, it is installed on the flue between described gas composition analyzer and the described fly-ash separator; Control device, described control device is with detected CO of described gas composition analyzer and O
2Content and limits of explosion concentration compare, control the unlatching of described gas injection apparatus or close with this.
The present invention also provides a kind of converter gas dry-dedusting system, and it comprises:
Refrigerating unit; Fly-ash separator; Explosion-proof equipment, it is connected on the flue between described refrigerating unit and the described fly-ash separator, and described explosion-proof equipment comprises gas composition analyzer, gas injection apparatus and control device, described CO and the O that is used for detecting flue gas
2The gas composition analyzer of content be installed on the inlet flue gas pipeline of described fly-ash separator; Described gas injection apparatus is installed on the flue between described gas composition analyzer and the described fly-ash separator; Described control device is with detected CO of described gas composition analyzer and O
2Content and limits of explosion concentration compare, control the unlatching of described gas injection apparatus or close with this; Induced draft fan, it is connected in described fly-ash separator; Switching station, its inlet is connected in described induced draft fan, and outlet connects respectively diffuses chimney and gas chamber, and the flue that diffuses between chimney and gas chamber is switched setting.
In preferred embodiment, described refrigerating unit comprises gasification cooling flue and the evaporative cooler that is interconnected.
In preferred embodiment, described gas injection apparatus is the nitrogen jet device.
In preferred embodiment, described fly-ash separator is smart fly-ash separator.
In preferred embodiment, described smart fly-ash separator is an electric precipitator.
In preferred embodiment, the flue between described switching station and the described gas chamber also is provided with gas cooler.
Characteristics of the present invention and advantage are: it has overcome the passive quick-fried shortcoming of unloading, but the gas mixture ratio example of the flue by destroying the fly-ash separator inlet, so that it reduces the rate of explosion of fly-ash separator not in the mode of limits of explosion scope, ensure fly-ash separator safe operation and converter ordinary production.
Description of drawings
The following drawings only is intended to the present invention done and schematically illustrates and explain, not delimit the scope of the invention.Wherein,
Fig. 1 is the schema of the converter gas dry-dedusting system in the correlation technique.
Fig. 2 is the schema of converter gas dry-dedusting system of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that is obtained under the creative work prerequisite.
As shown in Figure 2, converter gas dry-dedusting system of the present invention comprises refrigerating unit, fly-ash separator, explosion-proof equipment, induced draft fan, switching station, diffuses chimney and gas chamber.
Wherein, described refrigerating unit comprises gasification cooling flue 11 and the evaporative cooler 12 that is interconnected.Explosion-proof equipment is connected on the flue between refrigerating unit and the fly-ash separator 13, is used to prevent fly-ash separator 13 blasts, described explosion-proof equipment will after specifically describe.Induced draft fan 14 is connected in fly-ash separator 13.The inlet of switching station 15 is connected in induced draft fan 14, outlet connects respectively diffuses chimney 16 and gas chamber 17, and the flue that diffuses 17 of chimney 16 and gas chambers switched setting, making from induced draft fan 14 carries the flue gas of coming under the effect of switching station 15, perhaps be sent to and diffuse chimney 16, perhaps be sent to gas chamber 17.
Flue between described switching station 15 and the described gas chamber 17 also is provided with gas cooler 18.
Entering evaporative cooler 12 after the high-temperature flue gas that produces in the converter 19 of the present invention cools off through gasification cooling flue 11 directly cools off, discharge from evaporative cooler 12 with 160 ℃～220 ℃ temperature then, cooled smoke enters fly-ash separator 13 via flue after by explosion-proof equipment and carries out dust removal process, then be sent to induced draft fan 14, under the effect of induced draft fan 14, enter by 15 pairs of switching stations and to diffuse chimney 16 or 17 flue gases of gas chamber switch fast, between carbon period, the flue gas of high heating value is sent to gas chamber 17 after through gas cooler 18 coolings, and the low heat value flue gas that produces in oxygen blast initial stage and latter stage then is sent to and diffuses chimney 16 and burn.During stopping oxygen blast, flue gas is too via diffusing chimney 16 dischargings.In other words, qualified coal gas is sent to gas chamber 17 and stores, and underproof coal gas is sent to and diffuses chimney 16 by the igniting discharging.
The explosion-proof equipment that is used for converter gas dry-dedusting system that the present invention proposes comprises gas composition analyzer 2, gas injection apparatus 3 and control device 4.Described gas composition analyzer 2 is installed on the inlet flue gas pipeline of fly-ash separator 3 of described converter gas dry-dedusting system, and it is mainly used in and detects CO, O in the flue gas
2Content; Described gas injection apparatus 3 is installed on the flue between described gas composition analyzer 2 and the described fly-ash separator 13; Described control device 4 is with described gas composition analyzer 2 detected CO and O
2Content and limits of explosion concentration compare, control the unlatching of described gas injection apparatus 3 or close with this.
Because gaseous detonation has three key elements: the first, the ratio of mixture of inflammable gas and oxygen is in the limits of explosion scope; Temperature when the second, gas mixes is below minimum kindling temperature; Three, meet the kindling material of enough energy.
The present invention at first detects CO, O in the flue gas by gas composition analyzer 2 in use
2Content, described control device 4 is with gas composition analyzer 2 detected CO, O
2Content and limits of explosion concentration (promptly when the concentration of CO greater than 9%, and O simultaneously
2Concentration can blast greater than 6% o'clock) compare, control the unlatching of described gas injection apparatus 3 or close with this.That is to say, when control device 4 with gas composition analyzer 2 detected CO, O
2Content and after limits of explosion concentration compared, the concentration that obtains its CO was greater than 9%, and O simultaneously
2Concentration greater than 6% o'clock, promptly detect gas in the flue gas in the limits of explosion scope time, control device 4 pilot-gas jet apparatus 3 eject gas in flue, stop to spray after making it spray a setting-up time (for example 3-15 second), to destroy gas CO and the O in the flue gas
2Blending ratio, make gas in the flue gas not in the limits of explosion scope, thereby avoid blast; If control device 4 is with gas composition analyzer 2 detected CO, O
2Content and after limits of explosion concentration compared, the gas content that obtains detecting flue gas was not in the limits of explosion scope time, control device 4 pilot-gas jet apparatus 3 cut out.That is to say that the present invention is by destroying the first element in the gaseous detonation three elements, the mode of promptly destroying the blending ratio of gas is avoided exploding.
In preferred implementation, described gas injection apparatus 3 is the nitrogen jet device, i.e. the gas of its ejection is nitrogen.In fact, the gas that sprayed of described gas injection apparatus 3 also can be rare gas element, CO
2Or water vapor etc., all can destroy CO and O
2Blending ratio.
Described fly-ash separator can be smart fly-ash separator, for example is electric precipitator.
The above only is several embodiments of the present invention, and those skilled in the art can carry out various changes or modification to the embodiment of the invention and do not break away from the spirit and scope of the present invention according to application documents are disclosed.
Claims (10)
1, a kind of explosion-proof equipment that is used for converter gas dry-dedusting system is characterized in that, described explosion-proof equipment comprises:
Gas composition analyzer is used for detecting the CO and the O of flue gas
2Content, described gas composition analyzer is installed on the inlet flue gas pipeline of fly-ash separator of described converter gas dry-dedusting system;
Gas injection apparatus, it is installed on the flue between described gas composition analyzer and the described fly-ash separator;
Control device, described control device is with detected CO of described gas composition analyzer and O
2Content and limits of explosion concentration compare, control the unlatching of described gas injection apparatus or close with this.
2, the explosion-proof equipment that is used for converter gas dry-dedusting system according to claim 1 is characterized in that, described gas injection apparatus is the nitrogen jet device.
3, the explosion-proof equipment that is used for converter gas dry-dedusting system according to claim 1 is characterized in that, described fly-ash separator is smart fly-ash separator.
4, the explosion-proof equipment that is used for converter gas dry-dedusting system according to claim 3 is characterized in that, described smart fly-ash separator is an electric precipitator.
5, a kind of converter gas dry-dedusting system is characterized in that, it comprises:
Refrigerating unit;
Fly-ash separator;
Explosion-proof equipment, it is connected on the flue between described refrigerating unit and the described fly-ash separator, and described explosion-proof equipment comprises gas composition analyzer, gas injection apparatus and control device, described CO and the O that is used for detecting flue gas
2The gas composition analyzer of content be installed on the inlet flue gas pipeline of described fly-ash separator; Described gas injection apparatus is installed on the flue between described gas composition analyzer and the described fly-ash separator; Described control device is with detected CO of described gas composition analyzer and O
2Content and limits of explosion concentration compare, control the unlatching of described gas injection apparatus or close with this;
Induced draft fan, it is connected in described fly-ash separator;
Switching station, its inlet is connected in described induced draft fan, and outlet connects respectively diffuses chimney and gas chamber, and the flue that diffuses between chimney and gas chamber is switched setting.
6, converter gas dry-dedusting system according to claim 5 is characterized in that, described refrigerating unit comprises gasification cooling flue and the evaporative cooler that is interconnected.
7, converter gas dry-dedusting system according to claim 5 is characterized in that, described gas injection apparatus is the nitrogen jet device.
8, converter gas dry-dedusting system according to claim 5 is characterized in that, described fly-ash separator is smart fly-ash separator.
9, converter gas dry-dedusting system according to claim 8 is characterized in that, described smart fly-ash separator is an electric precipitator.
10, converter gas dry-dedusting system according to claim 5 is characterized in that, the flue between described switching station and the described gas chamber also is provided with gas cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100857841A CN101570808A (en) | 2009-05-31 | 2009-05-31 | Dry converter coal gas dust-removal system and explosion protection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100857841A CN101570808A (en) | 2009-05-31 | 2009-05-31 | Dry converter coal gas dust-removal system and explosion protection device thereof |
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| CN101570808A true CN101570808A (en) | 2009-11-04 |
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| CNA2009100857841A Pending CN101570808A (en) | 2009-05-31 | 2009-05-31 | Dry converter coal gas dust-removal system and explosion protection device thereof |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101875993A (en) * | 2010-07-30 | 2010-11-03 | 中冶南方工程技术有限公司 | System for removing dust from converter gas by dry method and using method thereof |
| CN101892345A (en) * | 2010-07-30 | 2010-11-24 | 中冶南方工程技术有限公司 | Converter coal gas dry-method dedusting system and using method thereof |
| CN101892343A (en) * | 2010-07-30 | 2010-11-24 | 中冶南方工程技术有限公司 | Converter gas dry-dedusting system and using method thereof |
| CN101892344A (en) * | 2010-07-30 | 2010-11-24 | 中冶南方工程技术有限公司 | Dry dedusting system for converter gas and using method thereof |
| CN102312038A (en) * | 2011-06-20 | 2012-01-11 | 北京中冶设备研究设计总院有限公司 | Converter gas water-free explosionproof dedusting process and equipment |
| CN102563692A (en) * | 2011-12-19 | 2012-07-11 | 西安交通大学 | Early-warning adjustment system and early-warning adjustment method for preventing detonation of large-scale power station pulverized-fuel boiler furnace |
| CN102912074A (en) * | 2012-11-08 | 2013-02-06 | 攀钢集团研究院有限公司 | Method for preventing dry process dust removal system from exhausting yellow smoke |
| CN102912075A (en) * | 2012-11-08 | 2013-02-06 | 攀钢集团研究院有限公司 | Method for improving coal gas recovery of semi-steel steel-making dry dedusting system |
| CN102912073A (en) * | 2012-11-08 | 2013-02-06 | 攀钢集团研究院有限公司 | Method for preventing vanadium extraction converter dry dedusting system from vented explosion |
| CN102912076A (en) * | 2012-11-08 | 2013-02-06 | 攀钢集团研究院有限公司 | Method for preventing dry process dust removal pipeline of vanadium extraction converter from scaling |
| CN103062789A (en) * | 2012-12-25 | 2013-04-24 | 西安交通大学 | System and method for utilizing flue gas circulation to prevent deflagration of hearth bottom |
| CN103184305A (en) * | 2013-03-13 | 2013-07-03 | 河北钢铁股份有限公司承德分公司 | Explosion-proof control method adopting electric precipitation for vanadium extraction in converter |
| CN103276139A (en) * | 2013-06-09 | 2013-09-04 | 中国重型机械研究院股份公司 | Nitrogen dilution anti-explosion system in dry-method cooling and purifying recovery system for converter gas |
| CN103409588A (en) * | 2013-08-02 | 2013-11-27 | 江苏永钢集团有限公司 | Interconnection intercommunication device for two converting furnace gas chambers |
| CN105154613A (en) * | 2015-10-30 | 2015-12-16 | 太仓东能环保设备有限公司 | Converter dry-dedusting technology |
| CN105603148A (en) * | 2015-12-24 | 2016-05-25 | 北京热盾节能技术有限公司 | Pure-dry bag dedusting system and process capable of recycling flue gas waste heat of steelmaking converter |
| CN106123619A (en) * | 2016-07-12 | 2016-11-16 | 中国石油化工股份有限公司 | The monitoring method of industrial furnace fuel accumulation |
| CN108895474A (en) * | 2018-08-17 | 2018-11-27 | 中冶赛迪工程技术股份有限公司 | A kind of surplus coal gas automatic relief system |
| CN109913244A (en) * | 2019-03-18 | 2019-06-21 | 唐山钢铁集团有限责任公司 | A kind of continuous coking device and technique |
| CN109985717A (en) * | 2017-12-31 | 2019-07-09 | 北京蓝亚能源科技有限公司 | A kind of safety system of high-efficiency pulverized coal preparation process |
| CN111549199A (en) * | 2020-04-14 | 2020-08-18 | 新兴铸管股份有限公司 | Converter gas recovery system and recovery process |
| CN111593163A (en) * | 2020-04-15 | 2020-08-28 | 浙江大维高新技术股份有限公司 | Converter gas flue gas conditioning system and flue gas conditioning method thereof |
-
2009
- 2009-05-31 CN CNA2009100857841A patent/CN101570808A/en active Pending
Cited By (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892345A (en) * | 2010-07-30 | 2010-11-24 | 中冶南方工程技术有限公司 | Converter coal gas dry-method dedusting system and using method thereof |
| CN101892343A (en) * | 2010-07-30 | 2010-11-24 | 中冶南方工程技术有限公司 | Converter gas dry-dedusting system and using method thereof |
| CN101892344A (en) * | 2010-07-30 | 2010-11-24 | 中冶南方工程技术有限公司 | Dry dedusting system for converter gas and using method thereof |
| CN101875993B (en) * | 2010-07-30 | 2012-09-05 | 中冶南方工程技术有限公司 | System for removing dust from converter gas by dry method and using method thereof |
| CN101875993A (en) * | 2010-07-30 | 2010-11-03 | 中冶南方工程技术有限公司 | System for removing dust from converter gas by dry method and using method thereof |
| CN102312038B (en) * | 2011-06-20 | 2013-07-31 | 北京中冶设备研究设计总院有限公司 | Converter gas water-free explosionproof dedusting process and equipment |
| CN102312038A (en) * | 2011-06-20 | 2012-01-11 | 北京中冶设备研究设计总院有限公司 | Converter gas water-free explosionproof dedusting process and equipment |
| CN102563692A (en) * | 2011-12-19 | 2012-07-11 | 西安交通大学 | Early-warning adjustment system and early-warning adjustment method for preventing detonation of large-scale power station pulverized-fuel boiler furnace |
| CN102912075A (en) * | 2012-11-08 | 2013-02-06 | 攀钢集团研究院有限公司 | Method for improving coal gas recovery of semi-steel steel-making dry dedusting system |
| CN102912073A (en) * | 2012-11-08 | 2013-02-06 | 攀钢集团研究院有限公司 | Method for preventing vanadium extraction converter dry dedusting system from vented explosion |
| CN102912076A (en) * | 2012-11-08 | 2013-02-06 | 攀钢集团研究院有限公司 | Method for preventing dry process dust removal pipeline of vanadium extraction converter from scaling |
| CN102912073B (en) * | 2012-11-08 | 2014-08-06 | 攀钢集团研究院有限公司 | Method for preventing vanadium extraction converter dry dedusting system from vented explosion |
| CN102912074A (en) * | 2012-11-08 | 2013-02-06 | 攀钢集团研究院有限公司 | Method for preventing dry process dust removal system from exhausting yellow smoke |
| CN102912074B (en) * | 2012-11-08 | 2014-05-21 | 攀钢集团研究院有限公司 | Method for preventing dry process dust removal system from exhausting yellow smoke |
| CN102912076B (en) * | 2012-11-08 | 2014-05-21 | 攀钢集团研究院有限公司 | Method for preventing dry process dust removal pipeline of vanadium extraction converter from scaling |
| CN103062789A (en) * | 2012-12-25 | 2013-04-24 | 西安交通大学 | System and method for utilizing flue gas circulation to prevent deflagration of hearth bottom |
| CN103062789B (en) * | 2012-12-25 | 2015-07-01 | 西安交通大学 | System and method for utilizing flue gas circulation to prevent deflagration of hearth bottom |
| CN103184305A (en) * | 2013-03-13 | 2013-07-03 | 河北钢铁股份有限公司承德分公司 | Explosion-proof control method adopting electric precipitation for vanadium extraction in converter |
| CN103276139A (en) * | 2013-06-09 | 2013-09-04 | 中国重型机械研究院股份公司 | Nitrogen dilution anti-explosion system in dry-method cooling and purifying recovery system for converter gas |
| CN103276139B (en) * | 2013-06-09 | 2015-09-16 | 中国重型机械研究院股份公司 | Nitrogen dilution explosion protection system in a kind of converter gas dry method cooling, purifying recovery system |
| CN103409588A (en) * | 2013-08-02 | 2013-11-27 | 江苏永钢集团有限公司 | Interconnection intercommunication device for two converting furnace gas chambers |
| CN105154613A (en) * | 2015-10-30 | 2015-12-16 | 太仓东能环保设备有限公司 | Converter dry-dedusting technology |
| CN105603148A (en) * | 2015-12-24 | 2016-05-25 | 北京热盾节能技术有限公司 | Pure-dry bag dedusting system and process capable of recycling flue gas waste heat of steelmaking converter |
| CN106123619A (en) * | 2016-07-12 | 2016-11-16 | 中国石油化工股份有限公司 | The monitoring method of industrial furnace fuel accumulation |
| CN106123619B (en) * | 2016-07-12 | 2018-05-18 | 中国石油化工股份有限公司 | The monitoring method of industrial furnace fuel accumulation |
| CN109985717A (en) * | 2017-12-31 | 2019-07-09 | 北京蓝亚能源科技有限公司 | A kind of safety system of high-efficiency pulverized coal preparation process |
| CN108895474A (en) * | 2018-08-17 | 2018-11-27 | 中冶赛迪工程技术股份有限公司 | A kind of surplus coal gas automatic relief system |
| CN108895474B (en) * | 2018-08-17 | 2024-02-23 | 中冶赛迪工程技术股份有限公司 | Automatic excess gas diffusing system |
| CN109913244A (en) * | 2019-03-18 | 2019-06-21 | 唐山钢铁集团有限责任公司 | A kind of continuous coking device and technique |
| CN111549199A (en) * | 2020-04-14 | 2020-08-18 | 新兴铸管股份有限公司 | Converter gas recovery system and recovery process |
| CN111593163A (en) * | 2020-04-15 | 2020-08-28 | 浙江大维高新技术股份有限公司 | Converter gas flue gas conditioning system and flue gas conditioning method thereof |
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