CN203683571U - Dry dedusting and energy-saving system - Google Patents

Dry dedusting and energy-saving system Download PDF

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Publication number
CN203683571U
CN203683571U CN201320878547.2U CN201320878547U CN203683571U CN 203683571 U CN203683571 U CN 203683571U CN 201320878547 U CN201320878547 U CN 201320878547U CN 203683571 U CN203683571 U CN 203683571U
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CN
China
Prior art keywords
gas
flue
cooler
evaporative cooler
dust
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201320878547.2U
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Chinese (zh)
Inventor
朱书成
袁文定
张红伟
康文举
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Nanyang Hanye Special Steel Co Ltd
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Nanyang Hanye Special Steel Co Ltd
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Publication date
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Priority to CN201320878547.2U priority Critical patent/CN203683571U/en
Application granted granted Critical
Publication of CN203683571U publication Critical patent/CN203683571U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a dry dedusting and energy-saving system comprising a converter, an evaporative cooler, an electrostatic dust collector and a gas tank which are connected with one another in sequence, wherein the converter is connected with the evaporative cooler through an evaporative cooling flue, the electrostatic dust collector is connected with the gas tank through a purification flue, and the outlet of the evaporative cooler is connected with the inlet of the electrostatic dust collector; a spray gun is arranged on the evaporative cooler; a coarse powder conveyor is arranged at the bottom of the evaporative cooler, and a fine powder conveyor is arranged below the electrostatic dust collector; the coarse powder conveyor is connected with a coarse powder dust bin, and the fine powder conveyor is connected with a fine powder dust bin; a draught fan, a recycling bell-shaped valve and a gas cooler are arranged on the purification flue in sequence; a water pipe is arranged on the gas cooler; the purification flue between the draught fan and the recycling bell-shaped valve is connected with a diffusing bell-shaped valve and a diffusing chimney which are connected with each other in series. The dry dedusting and energy-saving system disclosed by the utility model has a simple structure, and is high in dedusting efficiency by adopting a dry dedusting process; the dust content of the flue gas after purification is averagely below 20mg/Nm<3>, so that the flue gas is low in dust concentration; the dry dedusting and energy-saving system is small in system resistance, and low in power consumption and water consumption.

Description

A kind of dry method dust energy conserving system
Technical field
The utility model belongs to environment protection energy-saving equipment technical field, particularly a kind of dry method dust energy conserving system.
Background technology
Existing wet dedusting is the dedusting of traditional " OG " method, i.e. " two civilian towers " flue gas purification system.Converter gas enters overflow Venturi meter stop working cooling and slightly dedusting through gasification cooling flue, enters R-D Venturi meter and carries out thin dedusting, then enter multiple gear formula tornado evaporator through 90 ° of elbow separators after gravity dewatering apparatus.Flue gas after purification is taken out and is introduced into RECOVERY OF CONVERTER GAS switched system by blower fan, qualified coal gas is input to 50000m3 gas chamber by pipeline, and the coal gas of converter of recovery flows to user's uses such as steelworks Ladle-casting apparatus and rolling mill furnace through press and pipeline.
Due to the textural defect of wet type flue gas desulphurization equipment, cause this system to have following problem:
1, power consumption is high, and because systemic resistance loss is large, the supporting dedusting fan parameter of boosting is chosen to be 27KPa and just can reaches design requirements; Therefore, single seat converter primary air fan need to be selected the air quantity of D2700Nm3/min, supporting 1600kw high-voltage motor, and average ton steel unit consumption is 9.5kwh.
2, water loss is large, single cover wet dedusting consumption turbid circulating water 450m3/h, clean circulating water 150m3/h.
3, after the 450m3/h turbid circulating water consuming all enters sewage works and processes, could reuse as turbid circulating water, therefore, Sewage treatment systems occupied ground is large, and construction investment is high, and operating cost is high.
4, the local deashing labour intensity of wet dedusting is large, and blower fan applying working condition is poor, and draught fan impeller is easily stained with ash, and draught fan impeller deashing is large on STEELMAKING PRODUCTION impact.
Utility model content
The purpose of this utility model be to provide a kind of simple in structure, systemic resistance is little, efficiency of dust collection is high and power consumption water consumes low dry method dust energy conserving system.
For achieving the above object, the technical solution of the utility model is: a kind of dry method dust energy conserving system, comprise connected successively converter, evaporative cooler, electrostatic precipitator and gas chamber, converter is connected by gasification cooling flue with evaporative cooler, electrostatic precipitator is connected by purification flue with gas chamber, and evaporative cooler outlet is connected with electrostatic precipitator entrance; Described evaporative cooler is provided with spray gun, and evaporative cooler bottom and electrostatic precipitator below are respectively equipped with meal handling machinery and fine powder handling machinery, and meal handling machinery and fine powder handling machinery are connected with respectively meal dirt storehouse and fine dust storehouse; On purification flue, be provided with successively induced draft fan, reclaim cup valve and gas cooler, gas cooler is provided with water pipe, on the purification flue between induced draft fan and recovery cup valve, be connected be connected in series diffuse cup valve and diffusing chimney.
Between described recovery cup valve and gas cooler, be provided with glasses valve, between gas cooler and gas chamber, be provided with glasses valve.
The end of described spray gun is provided with double flowing nozzle, afterbody is connected with vapour pipe and water pipe.
Compared with prior art, the utility model has the advantages that:
1, the utility model comprises connected successively converter, evaporative cooler, electrostatic precipitator and gas chamber, converter is connected by gasification cooling flue with evaporative cooler, electrostatic precipitator is connected by purification flue with gas chamber, and evaporative cooler outlet is connected with electrostatic precipitator entrance; Described evaporative cooler is provided with spray gun, and evaporative cooler bottom and electrostatic precipitator below are respectively equipped with meal handling machinery and fine powder handling machinery, and meal handling machinery and fine powder handling machinery are connected with respectively meal dirt storehouse and fine dust storehouse; On purification flue, be provided with successively induced draft fan, reclaim cup valve and gas cooler, gas cooler is provided with water pipe, induced draft fan and reclaiming on the purification flue between cup valve, be connected be connected in series diffuse cup valve and diffusing chimney, it is simple in structure, adopt dry dedusting technology, efficiency of dust collection is high, and the dust content after purification is on average at 20 mg/Nm 3below, dust content of gas is low, can directly send user to use; Systemic resistance is little, and power consumption and water consumption are low, and power consumption accounts for 52% of wet dedusting power consumption, and water consumption accounts for 28% of wet dedusting water consumption, and can realize sewage zero-discharge, without Sewage treatment systems, saves and takes up an area and sewage disposal investment cost; This equipment controls that degree is high automatically, and when coal-gas recovering, switch speed is fast, can improve coal-gas recovering amount, and ton steel gas recovery amount is than many 15 m of wet dedusting 3, minimizing is diffused, and avoids secondary pollution; Because dust content after purifying is low, can effectively extend the work-ing life of induced draft fan, reduce equipment use cost and maintenance cost.
2, the end of spray gun is provided with double flowing nozzle, afterbody is connected with vapour pipe and water pipe, spray gun carries out cooling to converter gas, by double flowing nozzle, steam and water coolant are mixed, reach the atomizing effect of water coolant, to improve the contact area of water coolant and air-flow, make converter gas obtain well, cooling uniformly; The injection water of double flowing nozzle and converter gas are in operational process, and water droplet is evaporated by flue gas heating, absorbs the heat of flue gas in vaporescence, thereby reduce flue-gas temperature, good cooling effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
Dry method dust energy conserving system as shown in Figure 1, it comprises connected successively converter 1, evaporative cooler 3, electrostatic precipitator 4 and gas chamber 16, converter 1 is connected by gasification cooling flue 2 with evaporative cooler 3, electrostatic precipitator 4 is connected by purification flue 10 with gas chamber 16, and the outlet of evaporative cooler 3 is connected by pipeline with the entrance of electrostatic precipitator 4.Below evaporative cooler 3 bottoms and electrostatic precipitator 4, be respectively equipped with meal handling machinery 6 and fine powder handling machinery 7, meal handling machinery 6 and fine powder handling machinery 7 are connected with respectively meal dirt storehouse 8 and fine dust storehouse 9, and meal dirt storehouse 8 and fine dust storehouse 9 are positioned between briquetting.On purification flue 10, be provided with successively induced draft fan 5, reclaim cup valve 12, glasses valve 13, gas cooler 14 and glasses valve 15, on the purification flue 10 between induced draft fan 5 and recovery cup valve 12, be connected be connected in series diffuse cup valve 11 and diffusing chimney 22.
On gas cooler 14, be provided with water pipe 21.On evaporative cooler 3, be provided with spray gun 17, the end of spray gun 17 is provided with double flowing nozzle 18, afterbody is connected with vapour pipe 19 and water pipe 20, spray gun 17 carries out cooling to converter gas, by double flowing nozzle 18, steam and water coolant are mixed, reach the atomizing effect of water coolant, to improve the contact area of water coolant and air-flow, make converter gas obtain well, cooling uniformly.The injection water of double flowing nozzle 18 and converter gas are in operational process, and water droplet is evaporated by flue gas heating, absorbs the heat of flue gas in vaporescence, thereby reduce flue-gas temperature.
In the present embodiment, meal handling machinery 6 and fine powder handling machinery 7 are chain conveyor; Spray gun 17 is 14 bars.
In the utility model, when converter smelting, after the high-temperature flue gas that contains a large amount of carbon monoxide is cooling, could meet the operational conditions of dry method dust.The high-temperature flue-gas of evaporative cooler 3 entrances is 800~1200 ℃, and the high-temperature flue-gas of outlet should be determined according to the temperature in of electrostatic precipitator 4, and general control is at 200~300 ℃, to reach the entrance requirement of electrostatic precipitator 4.Evaporative cooler 3, except cooled flue gas, also can rely on the deceleration of air-flow and ingress's water droplet to the wetting of flue dust, coarse particles flue dust to be separated, and reaches the object of one-time dedusting, and dust accumulates in evaporative cooler 3 bottoms and discharged by chain conveyor.

Claims (3)

1. a dry method dust energy conserving system, it is characterized in that: comprise connected successively converter, evaporative cooler, electrostatic precipitator and gas chamber, converter is connected by gasification cooling flue with evaporative cooler, electrostatic precipitator is connected by purification flue with gas chamber, and evaporative cooler outlet is connected with electrostatic precipitator entrance; Described evaporative cooler is provided with spray gun, and evaporative cooler bottom and electrostatic precipitator below are respectively equipped with meal handling machinery and fine powder handling machinery, and meal handling machinery and fine powder handling machinery are connected with respectively meal dirt storehouse and fine dust storehouse; On purification flue, be provided with successively induced draft fan, reclaim cup valve and gas cooler, gas cooler is provided with water pipe, on the purification flue between induced draft fan and recovery cup valve, be connected be connected in series diffuse cup valve and diffusing chimney.
2. dry method dust energy conserving system as claimed in claim 1, is characterized in that: between described recovery cup valve and gas cooler, be provided with glasses valve, between gas cooler and gas chamber, be provided with glasses valve.
3. dry method dust energy conserving system as claimed in claim 1 or 2, is characterized in that: the end of described spray gun is provided with double flowing nozzle, afterbody is connected with vapour pipe and water pipe.
CN201320878547.2U 2013-12-30 2013-12-30 Dry dedusting and energy-saving system Expired - Fee Related CN203683571U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320878547.2U CN203683571U (en) 2013-12-30 2013-12-30 Dry dedusting and energy-saving system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320878547.2U CN203683571U (en) 2013-12-30 2013-12-30 Dry dedusting and energy-saving system

Publications (1)

Publication Number Publication Date
CN203683571U true CN203683571U (en) 2014-07-02

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Application Number Title Priority Date Filing Date
CN201320878547.2U Expired - Fee Related CN203683571U (en) 2013-12-30 2013-12-30 Dry dedusting and energy-saving system

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105154613A (en) * 2015-10-30 2015-12-16 太仓东能环保设备有限公司 Converter dry-dedusting technology
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
CN111944947A (en) * 2020-08-07 2020-11-17 马鞍山奥柯环保科技发展有限公司 Self-adaptive converter flue gas dry dedusting equipment

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105154613A (en) * 2015-10-30 2015-12-16 太仓东能环保设备有限公司 Converter dry-dedusting technology
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
CN111944947A (en) * 2020-08-07 2020-11-17 马鞍山奥柯环保科技发展有限公司 Self-adaptive converter flue gas dry dedusting equipment

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140702

Termination date: 20151230

EXPY Termination of patent right or utility model