CN204690028U - A kind of blast furnace gas deep-purification dedusting device - Google Patents
A kind of blast furnace gas deep-purification dedusting device Download PDFInfo
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- CN204690028U CN204690028U CN201520398562.6U CN201520398562U CN204690028U CN 204690028 U CN204690028 U CN 204690028U CN 201520398562 U CN201520398562 U CN 201520398562U CN 204690028 U CN204690028 U CN 204690028U
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Abstract
A kind of blast furnace gas deep-purification dedusting device is provided, comprises blast furnace, gravitational precipitator, overflow Venturi meter, whirlwind desliming device, adjustable throat inlet Venturi meter, tornado evaporator, wet electrical dust precipitator, TRT unit, relief valve group, user; Wet electrical dust precipitator inlet mouth is positioned at its case top; Its inlet mouth place establishes airflow uniform distribution device, and in wet electrical dust precipitator housing, homogeneous vertical arranges that some glass reinforced plastic anodes are restrained, and anode tube bank is fixed by anode fixed frame; Spray equipment is placed in anode tube bank top, and spray equipment is formed by the nozzles combine of some adjustable angle; High voltage direct current is connected with corona electrode by the insulated case of band lead-in wire, and corona electrode is fixed by cathode suspended framework, negative electrode take-up device, weight, and insulated case communicates with hot-air blowing system; Its advantage is: dustiness can be down to 10mg/Nm
3even 5mg/Nm
3below, remove the water smoke carried secretly in flue gas, reduce the low temperature corrosion of wet flue gas, use safety, environmental pollution is little, working cost is low simultaneously.
Description
Technical field:
The utility model relates to industrial smoke treatment facility technical field, particularly relates to a kind of blast furnace gas deep-purification dedusting device.
Background technology:
In the prior art, the raw gas temperature of discharging from blast furnace roof is 150 ~ 300 DEG C, and dustiness is at 10 ~ 40g/Nm
3if do not carry out udst separation, this coal gas does not have use value.Because dustiness is high, not only can cause caloric power of gas low and also serious time also can cause the blocking of pipeline and combustion equipment, the scorification of refractory materials or cause other accidents, simultaneously in long-distance conveying way, also line clogging can be caused, wash away, corrode tube wall, whole system maintenance is strengthened, even affects production.Require that the dustiness of blast furnace gas must reach 10mg/m as geseous fuel
3below, therefore, udst separation must be carried out.At present, udst separation technique is mainly divided into wet method and dry method two kinds.What blast furnace gas dry dusting generally adopted is sack cleaner, and minority enterprise have employed electrostatic precipitator, but all fail long-term, continuously, steady running.Major cause be the temperature range that uses improper to electric precipitator time, running is unstable.And blast furnace gas dry dusting takes up an area greatly, high, the effective working temperature interval of maintenance cost is narrow, purification coal gas weak effect, TRT fan blade wear and tear, vibration equipment is large, brings disaster to the outstanding drawbacks such as all users.Traditional wet dedusting technique blast furnace raw gas, after the thick dedusting of gravitational precipitator, enters the meticulous dedusting of wet type, relies on the water that spray is a large amount of, and final acquisition dustiness is 10mg/m
3following purified gas.The meticulous cleaning apparatus of wet type is divided into again tower and Venturi system, two civilian system and Martina Bischof method.Two civilian system is exactly the wet dedusting purification system that instead of washing tower with overflow Venturi meter.Martina Bischof (Bischoff) method is a kind of wet type circumferential weld cleaning coal gas device, after being installed on gravity blast furnace dust catcher.Current domestic large blast furnace generally adopts two civilian system wet dedusting.There is following shortcoming in existing wet dedusting technology: 1) energy consumption of system is high, water loss is very large; 2) dust removing effects of two civilian system increases along with resistance and increases, so want to reach desirable dust removing effects, crushing about 20 ~ 25kpa, has a strong impact on follow-up TRT generated energy; 3) because water loss is large, it is serious that the coal gas after purification carries liquid mist secretly, and mechanical water content is large, upstream device and annex is very easily corroded, affect equipment life, 4) coal gas is moisture many, calorific value decline, causes that thermo-efficiency is low, temperature of combustion is low, and productive capacity is poor.
Summary of the invention:
The purpose of this utility model is the deficiency overcoming existing dedusting of blast furnace gas treating plant, provide that a kind of throughput is large, efficiency of dust collection is high, the pressure-losses is little, water loss and current consumption few, sealing is tight, high voltage bearing a kind of blast furnace deep-purification dedusting device.
Technical solution of the present utility model is: provide a kind of blast furnace gas deep-purification dedusting device, comprises interconnective blast furnace, gravitational precipitator, overflow Venturi meter, whirlwind desliming device, adjustable throat inlet Venturi meter, tornado evaporator, TRT unit, relief valve group, user; Feature is: also comprise wet electrical dust precipitator; Wet electrical dust precipitator inlet mouth is positioned at its case top; Its inlet mouth place establishes airflow uniform distribution device, and airflow uniform distribution device is made up of adjustable flow deflector and airflow-distribution board; In wet electrical dust precipitator housing, homogeneous vertical arranges that some glass reinforced plastic anodes are restrained, and anode tube bank is fixed by anode fixed frame; Spray equipment is placed in anode tube bank top, and spray equipment is formed by the nozzles combine of some adjustable angle; High voltage direct current is connected with corona electrode by the insulated case of band lead-in wire, and corona electrode is fixed by cathode suspended framework, negative electrode take-up device, weight, and insulated case communicates with hot-air blowing system; The top of blast furnace arranges bleeding valve; Blast furnace is connected by coal gas downtake with gravitational precipitator; Between gravitational precipitator and overflow Venturi meter, pipeline arranges raw coke oven gas pipe gas bleeding valve; Overflow Venturi meter top arranges spill box and gas entry; Overflow Venturi meter is connected with whirlwind desliming organ pipe road; The pipeline that whirlwind desliming device is connected with adjustable throat inlet Venturi meter arranges half clean coal tracheae gas bleeding valve; Adjustable throat inlet Venturi meter is made up of collapsible tube, aditus laryngis, convergent divergent channel, spraying plant; Adjustable throat inlet Venturi meter is connected with tornado evaporator pipeline; The connecting tube of tornado evaporator and wet electrical dust precipitator arranges half clean coal tracheae gas bleeding valve; Wet electrical dust precipitator is connected with TRT unit and user pipe; Pipeline between wet electrical dust precipitator and TRT unit is arranged clean coal tracheae gas bleeding valve; A relief valve group is connected in parallel at the two ends of TRT unit.Be further characterized in that: substitute overflow Venturi meter and whirlwind desliming device with high pressure scrubber; The import of high pressure scrubber is connected with gravitational precipitator outlet conduit, and its outlet connects the entrance end of adjustable throat inlet Venturi meter by gas line.Gravitational precipitator, overflow Venturi meter and whirlwind desliming device is substituted with wet cooling tower; The entrance end of wet cooling tower is connected by coal gas downtake pipeline with blast furnace; The exit end of wet cooling tower is connected with adjustable throat inlet venturi inlet end pipeline.Gravitational precipitator, adjustable throat inlet Venturi meter and tornado evaporator is substituted with wet cooling tower; The entrance end of wet cooling tower is connected by coal gas downtake pipeline with blast furnace; Wet cooling tower outlet is connected with overflow venturi inlet segment pipe; Overflow Venturi meter is connected with whirlwind desliming organ pipe road; The exit end of whirlwind desliming device is connected with the entrance end pipeline of wet electrical dust precipitator.Substitute overflow Venturi meter, whirlwind desliming device, adjustable throat inlet Venturi meter and tornado evaporator with than Shao husband cleanser, be connected than the import of Shao husband cleanser with the outlet conduit of gravitational precipitator, its outlet is connected with the inlet mouth pipeline on wet electrical dust precipitator top.
The beneficial effects of the utility model are: use this blast furnace gas deep-purification dedusting device, finally dustiness can be down to 10mg/Nm
3even 5mg/Nm
3below, remove the water smoke carried secretly in flue gas simultaneously, reduce the low temperature corrosion of wet flue gas, meanwhile, the pollutents such as the aerosol in flue gas, heavy metal are also effectively controlled, and greatly improve the cleanliness factor of flue gas, ensure that the use safety of downstream user, reduce the pollution to environment.And systemic resistance little, invest little, working cost is low.This device is applicable to the upgrading of all wet method systems, by system optimization crushing, transforms without the need to blower fan system.
Accompanying drawing illustrates:
A kind of blast furnace gas deep-purification dedusting device of Fig. 1 the utility model embodiment schema;
In accompanying drawing: 1. blast furnace; 2. gravitational precipitator; 3. overflow Venturi meter; 4. whirlwind desliming device; 5. adjustable throat inlet Venturi meter; 6. tornado evaporator; 7. wet electrical dust precipitator; 8.TRT unit; 9. relief valve group; 10. user; 11. bleeding valves; 12. raw coke oven gas pipe gas bleeding valves; 13. half clean coal tracheae gas bleeding valves; 14. clean coal tracheae gas bleeding valves; 15. coal gas downtakes; 16. gas entries; 17. spill boxs; 18. collapsible tubes; 19. aditus laryngis; 20. convergent divergent channels; 21. spraying plants; The insulated case of 22. band lead-in wires; 23. hot-air blowing systems; 24. anode tube banks; 25. corona electrodes; 26. anode fixed frames; 27. negative electrode take-up devices; 28. weights; 29. high-voltage DC power supplies; 30. airflow uniform distribution devices; 31. spray equipments; 32. cathode suspended frameworks.
Embodiment:
Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail: be a kind of blast furnace gas deep-purification dedusting device shown in Fig. 1, comprises and sequentially pass through blast furnace 1 that pipeline connects successively, gravitational precipitator 2, overflow Venturi meter 3, whirlwind desliming device 4, adjustable throat inlet Venturi meter 5, tornado evaporator 6, wet electrical dust precipitator 7, TRT unit 8, relief valve group 9 and user 10 according to flow of gas; Excess pressure power generating device TRT unit 8 and purified gas pipe mesh pressure adjust valve group 9 is parallel with from wet electrical dust precipitator 7 exit end; Wet electrical dust precipitator 7 inlet mouth is positioned at its case top, is connected by pipeline with the tornado evaporator 6 of front end; Inlet mouth place establishes airflow uniform distribution device 30, and airflow uniform distribution device 30 is made up of adjustable flow deflector and airflow-distribution board, and in its housing, homogeneous vertical arranges some glass reinforced plastic anodes tube bank 24, is fixed by anode fixed frame 26; Spray equipment 31 is placed in and above anode tube bank 24, spray equipment is formed by some nozzles combine, and described nozzle angle is adjustable; High voltage direct current 29 is connected with corona electrode 25 by the insulated case 22 of band lead-in wire; corona electrode 25 is fixed by cathode suspended framework 32, negative electrode take-up device 27, weight 28; corona electrode is avoided to swing in high velocity air; insulated case carries out insulation protection by hot-air blowing system 23, in order to avoid moist dew electricity.The liquid collected by electric precipitator and cleaning showers liquid flow into bottom water leg, recycle after treatment.The top of blast furnace 1 arranges bleeding valve 11; Blast furnace 1 is connected by coal gas downtake 15 with gravitational precipitator 2; Between gravitational precipitator 2 and overflow Venturi meter 3, pipeline arranges raw coke oven gas pipe gas bleeding valve 12; Overflow Venturi meter 3 top arranges spill box 17 and gas entry 16; Overflow Venturi meter 3 is connected with whirlwind desliming device 4 pipeline; The pipeline that whirlwind desliming device 4 is connected with adjustable throat inlet Venturi meter 5 arranges half clean coal tracheae gas bleeding valve 13; Adjustable throat inlet Venturi meter 5 is made up of collapsible tube 18, aditus laryngis 19, convergent divergent channel 20, spraying plant 21; Adjustable throat inlet Venturi meter 5 is connected with tornado evaporator 6 pipeline; Tornado evaporator 6 with the connecting tube of wet electrical dust precipitator 7 arrange half clean coal tracheae gas bleeding valve 13; Wet electrical dust precipitator 7 is connected with TRT unit 8 and user 10 pipeline; Pipeline between wet electrical dust precipitator 7 and TRT unit 8 is arranged clean coal tracheae gas bleeding valve 14; A relief valve group 9 is connected in parallel at TRT unit 8 two ends.Preferably one: overflow Venturi meter 3 in described device and whirlwind desliming device 4 can be replaced with high pressure scrubber.The import of high pressure scrubber is connected with gravitational precipitator outlet conduit, and its outlet connects the entrance end of adjustable throat inlet Venturi meter 5 by gas line, in the meticulous dedusting of secondary venturi system half.Suitably regulate secondary venturi apparatus aditus laryngis 19 according to final dust removing effects simultaneously, reduce voltage loss, guarantee blower fan can reduction of speed energy-conservation, not only dust content of gas can be controlled, reduce the wearing and tearing to gas compressor and internal combustion turbine, more the mechanical water carried secretly of end gas can be removed, reduce equipment corrosion.Preferably two: gravitational precipitator 2, overflow Venturi meter 3 and the whirlwind desliming device 4 in described device can be replaced with wet cooling tower tower.The raw gas that blast furnace 1 produces enters wet cooling tower through pipeline connection and carries out primary wash cooling, and wet cooling tower outlet is connected with adjustable throat inlet Venturi meter 5 entrance end pipeline, finally flue gas is imported the meticulous dedusting of wet electrical dust precipitator.In the meticulous dedusting of secondary venturi system half.Suitably regulate secondary venturi apparatus aditus laryngis 19 according to final dust removing effects simultaneously, reduce voltage loss, guarantee blower fan can reduction of speed energy-conservation, not only dust content of gas can be controlled, reduce the wearing and tearing to gas compressor and internal combustion turbine, more the mechanical water carried secretly of end gas can be removed, reduce equipment corrosion.Preferably three: gravitational precipitator 2, adjustable throat inlet Venturi meter 5 and the tornado evaporator 6 in described device can be replaced with wet cooling tower tower.The raw gas that blast furnace 1 produces is delivered to wet cooling tower through pipeline connection and is carried out washing cooling, and wet cooling tower outlet is connected with overflow Venturi meter 3 inlet section pipeline, and the exit end of whirlwind desliming device 4 is connected with the entrance end pipeline of wet electrical dust precipitator 7.Suitably regulate one-level venturi device according to final dust removing effects simultaneously, reduce voltage loss, guarantee blower fan can reduction of speed energy-conservation, not only dust content of gas can be controlled, reduce the wearing and tearing to gas compressor and internal combustion turbine, more the mechanical water carried secretly of end gas can be removed, reduce equipment corrosion.Preferably four: can with the overflow Venturi meter 3 replaced than Shao husband cleanser in described device, whirlwind desliming device 4, adjustable throat inlet Venturi meter 5 and tornado evaporator 6.Be connected with gravitational precipitator outlet conduit than the import of Shao husband cleanser, its outlet is connected with the inlet mouth pipeline on wet electrical dust precipitator 7 top.Suitably regulate than Shao husband cleanser circumferential weld aperture according to final dust removing effects simultaneously, reduce voltage loss, guarantee blower fan can reduction of speed energy-conservation, not only dust content of gas can be controlled, reduce the wearing and tearing to gas compressor and internal combustion turbine, more the mechanical water carried secretly of end gas can be removed, reduce equipment corrosion.
Claims (5)
1. a blast furnace gas deep-purification dedusting device, comprises interconnective blast furnace (1), gravitational precipitator (2), overflow Venturi meter (3), whirlwind desliming device (4), adjustable throat inlet Venturi meter (5), tornado evaporator (6), TRT unit (8), relief valve group (9), user (10); Feature is: also comprise wet electrical dust precipitator (7); Wet electrical dust precipitator (7) inlet mouth is positioned at its case top; Its inlet mouth place establishes airflow uniform distribution device (30), and airflow uniform distribution device (30) is made up of adjustable flow deflector and airflow-distribution board; In wet electrical dust precipitator (7) housing, homogeneous vertical arranges some glass reinforced plastic anodes tube bank (24), and anode tube bank (24) is fixed by anode fixed frame (26); Spray equipment (31) is placed in anode tube bank (24) top, and spray equipment (31) is formed by the nozzles combine of some adjustable angle; High voltage direct current (29) is connected with corona electrode (25) by the insulated case (22) of band lead-in wire, corona electrode (25) is fixed by cathode suspended framework (32), negative electrode take-up device (27), weight (28), and insulated case communicates with hot-air blowing system (23); The top of blast furnace (1) arranges bleeding valve (11); Blast furnace (1) is connected by coal gas downtake (15) with gravitational precipitator (2); Between gravitational precipitator (2) and overflow Venturi meter (3), pipeline arranges raw coke oven gas pipe gas bleeding valve (12); Overflow Venturi meter (3) top arranges spill box (17) and gas entry (16); Overflow Venturi meter (3) is connected with whirlwind desliming device (4) pipeline; The pipeline that whirlwind desliming device (4) is connected with adjustable throat inlet Venturi meter (5) arranges half clean coal tracheae gas bleeding valve (13); Adjustable throat inlet Venturi meter (5) is made up of collapsible tube (18), aditus laryngis (19), convergent divergent channel (20), spraying plant (21); Adjustable throat inlet Venturi meter (5) is connected with tornado evaporator (6) pipeline; The connecting tube of tornado evaporator (6) with wet electrical dust precipitator (7) arranges half clean coal tracheae gas bleeding valve (13); Wet electrical dust precipitator (7) is connected with TRT unit (8) and user (10) pipeline; Pipeline between wet electrical dust precipitator (7) and TRT unit (8) is arranged clean coal tracheae gas bleeding valve (14); A relief valve group (9) is connected in parallel at the two ends of TRT unit (8).
2. a kind of blast furnace gas deep-purification dedusting device as claimed in claim 1, is characterized in that: substitute overflow Venturi meter (3) and whirlwind desliming device (4) with high pressure scrubber; The import of high pressure scrubber is connected with gravitational precipitator outlet conduit, and its outlet connects the entrance end of adjustable throat inlet Venturi meter (5) by gas line.
3. a kind of blast furnace gas deep-purification dedusting device as claimed in claim 1, is characterized in that: substitute gravitational precipitator (2), overflow Venturi meter (3) and whirlwind desliming device (4) with wet cooling tower; The entrance end of wet cooling tower is connected by coal gas downtake (15) pipeline with blast furnace (1); The exit end of wet cooling tower is connected with adjustable throat inlet Venturi meter (5) entrance end pipeline.
4. a kind of blast furnace gas deep-purification dedusting device as claimed in claim 1, is characterized in that: substitute gravitational precipitator (2), adjustable throat inlet Venturi meter (5) and tornado evaporator (6) with wet cooling tower; The entrance end of wet cooling tower is connected by coal gas downtake (15) pipeline with blast furnace (1); Wet cooling tower outlet is connected with overflow Venturi meter (3) inlet section pipeline; Overflow Venturi meter (3) is connected with whirlwind desliming device (4) pipeline; The exit end of whirlwind desliming device (4) is connected with the entrance end pipeline of wet electrical dust precipitator (7).
5. a kind of blast furnace gas deep-purification dedusting device as claimed in claim 1, it is characterized in that: substitute overflow Venturi meter (3), whirlwind desliming device (4), adjustable throat inlet Venturi meter (5) and tornado evaporator (6) with than Shao husband cleanser, be connected with the outlet conduit of gravitational precipitator (2) than the import of Shao husband cleanser, its outlet is connected with the inlet mouth pipeline on wet electrical dust precipitator (7) top.
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Cited By (6)
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| CN108333002A (en) * | 2017-12-22 | 2018-07-27 | 北京林业大学 | VOC harvesters, VOC acquisition methods |
| CN108636608A (en) * | 2018-05-10 | 2018-10-12 | 深圳市中金岭南有色金属股份有限公司韶关冶炼厂 | Lead-zinc smelting flushing cinder gathers dust treatment process and the electrofilter for the technique |
| CN109200710A (en) * | 2018-11-02 | 2019-01-15 | 广东碧和晴环保科技设备有限公司 | A kind of method for purifying and processing waste gas |
| CN109477689A (en) * | 2016-05-12 | 2019-03-15 | 丹尼利克里斯有限公司 | The technique of furnace equipment and processing furnace gas |
| CN111411186A (en) * | 2019-01-04 | 2020-07-14 | 新疆八一钢铁股份有限公司 | Ou ye stove shaft furnace roof atomizer |
| CN112745968A (en) * | 2021-02-02 | 2021-05-04 | 新疆八一钢铁股份有限公司 | Gas dehydration and dechlorination device for Ou metallurgical furnace |
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2015
- 2015-06-10 CN CN201520398562.6U patent/CN204690028U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109477689A (en) * | 2016-05-12 | 2019-03-15 | 丹尼利克里斯有限公司 | The technique of furnace equipment and processing furnace gas |
| CN108333002A (en) * | 2017-12-22 | 2018-07-27 | 北京林业大学 | VOC harvesters, VOC acquisition methods |
| CN108333002B (en) * | 2017-12-22 | 2020-09-29 | 北京林业大学 | VOC (volatile organic compound) acquisition device and VOC acquisition method |
| CN108636608A (en) * | 2018-05-10 | 2018-10-12 | 深圳市中金岭南有色金属股份有限公司韶关冶炼厂 | Lead-zinc smelting flushing cinder gathers dust treatment process and the electrofilter for the technique |
| CN109200710A (en) * | 2018-11-02 | 2019-01-15 | 广东碧和晴环保科技设备有限公司 | A kind of method for purifying and processing waste gas |
| CN111411186A (en) * | 2019-01-04 | 2020-07-14 | 新疆八一钢铁股份有限公司 | Ou ye stove shaft furnace roof atomizer |
| CN112745968A (en) * | 2021-02-02 | 2021-05-04 | 新疆八一钢铁股份有限公司 | Gas dehydration and dechlorination device for Ou metallurgical furnace |
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