CN102586523B - Blast furnace gas purification plant - Google Patents
Blast furnace gas purification plant Download PDFInfo
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- CN102586523B CN102586523B CN 201210052037 CN201210052037A CN102586523B CN 102586523 B CN102586523 B CN 102586523B CN 201210052037 CN201210052037 CN 201210052037 CN 201210052037 A CN201210052037 A CN 201210052037A CN 102586523 B CN102586523 B CN 102586523B
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Abstract
The invention belongs to blast furnace gas recovery plants and especially relates to a blast furnace gas washing and purifying plant. The plant comprises a primary Venturi dust remover, a secondary Venturi dust remover, a rotational flow sedimentation basin, a hot water tank, circulating water pumps, filters and washing water sprinkling devices. The two-stage Venturi dust removers are connected with each other and are both connected with a pipeline of the rotational flow sedimentation basin. The plant is characterized in that each of the washing water sprinkling devices comprises an upper atomization sprinkler and a lower atomization sprinkler, which are respectively arranged above a Venturi tube throat of the two-stage Venturi dust removers and in the throat, and that the upper atomization sprinklers and the lower atomization sprinklers are connected with the hot water tank through pipelines, valves, the filters and the circulating water pumps. The invention has the following advantages: novel conception, simplified construction, reasonable configuration, smooth gas dedusting and purifying flow, a good purifying effect, capacity of overcoming the disadvantages of damage of the throat, obstruction of the sprinklers and the like and prolonging the service life of equipment, substantial reduction in consumption of washing water, reduction in power consumption, cancellation of a cooling tower and an upper tower pump assembly, reduced investment, saving of considerable cost for examination, repair and operation, raised purified gas outlet temperature, reduced pressure loss when blast furnace gas passes through the throat and enhanced TRT power generating capacity.
Description
Technical field
The invention belongs to the blast furnace gas retrieving arrangement, relate in particular to blast furnace gas washing, purifying treatment unit.
Background technology
Blast furnace produces a large amount of blast furnace gases in smelting process, its dustiness still reaches 10～12g/m after the gravitational precipitator dedusting
3, further could use after the udst separation.Current blast furnace gas adopts two civilian formula cleaning apparatus washing, purifyings.This device is by one-level venturi tube and aditus laryngis grain of rice valve, gravity dehydration device, secondary venturi tube and grain of rice valve, filler water trap, sprinkler system, water circulating pump, hot tub, cooling tower, goes up compositions such as tower pump group, cyclone sediment pond.After half purified gas that gravitational precipitator flows out enters the washing of one-level literary composition formula fly-ash separator, dehydration, enter the washing of secondary literary composition formula fly-ash separator, dehydration again.Blast furnace gas after the purification is through TRT top pressure power generation, and a part of heat supply wind furnace burns stove usefulness, and another part enters gaspipe network; Its washing water operational scheme is: " partly purifying waste water " that the cyclone sediment pond overflows squeezed into cooling tower cooling back by the lift pump group and flowed into hot tub, pump into civilian formula fly-ash separator sprinkler system by water circulating pump again, blast furnace gas is carried out washing, purifying, sewage after the washing flows back to the cyclone sediment pond through water discharge valve, so circulation.The shortcoming that exists of prior art is: (1) system energy consumption height, water loss are big, and water loss is generally at 3.2～3.6L/m
3Between (water-gas ratio); (2) TRT entrance gas temperature low (general 50～55 ℃), the inlet outlet pressure differential of two civilian formula fly-ash separators influences its generated energy at 20～25kpa; (3) civilian formula aditus laryngis grain of rice valve is fragile, its both sides water tank spout hole and top sprinkler system thereof easily stop up, cause efficiency of dust collection to descend rapidly, make upstream device TRT top pressure power generation unit stator blade dust stratification, cause unit vibration, structure deteriorate, the carbonization of stove fillings superficial dust influences wind-warm syndrome and checker brick life-span.
Summary of the invention
In order to overcome the defective that prior art exists, the invention discloses a kind of blast furnace gas purification device, blast furnace gas is carried out washing, purifying to be handled, can solve aditus laryngis damages and the sprinkler system blockage problem, reduce confluent, improve the gas purification effect, simplify circulation cleaning water conservancy project process flow, cut down the consumption of energy, improve the TRT generated energy.
The blast furnace gas purification device is made of one-level literary composition formula fly-ash separator, secondary literary composition formula fly-ash separator, cyclone sediment pond, hot tub, water circulating pump, strainer and washing water flusher.One-level, secondary literary composition formula fly-ash separator are connected, and all be communicated with cyclone sediment pond pipe connection, hot tub is communicated with cyclone sediment pond pipe connection, be characterized in that described washing water flusher is made of last atomizing sprinkler system and following atomizing sprinkler system, be located at top and the aditus laryngis inside of the cylindrical aditus laryngis of venturi tube of one-level, secondary literary composition formula fly-ash separator respectively; Upper and lower atomizing sprinkler system is connected by pipeline, valve, strainer, water circulating pump and hot tub.Half purified gas that gravitational precipitator flows out enters one-level literary composition formula fly-ash separator, secondary literary composition formula fly-ash separator, washing, dehydration, and the blast furnace gas after the purification is through TRT top pressure power generation, and a part of heat supply wind furnace burns stove usefulness, and another part enters gaspipe network; Washing water recycle process: " partly purifying waste water " that the cyclone sediment pond overflows flows into hot tub, pumped by water circulating pump, filter the back for atomizing sprinkler system and following atomizing water spraying device on the civilian formula fly-ash separator through filter, blast furnace gas is carried out washing, purifying, sewage after the washing flows back to the cyclone sediment pond through a literary composition, two civilian water discharge valves, recycles.
The present invention further improves, and the venturi tube aditus laryngis of described civilian formula fly-ash separator is designed to cylindrical.Air-flow is difficult for laying dust, obstruction by evenly.
The present invention further improves, and the described atomizing sprinkler system of going up adopts 6-10 double helix atomizing lance, places venturi tube aditus laryngis top, with the washing water atomizing, increases the contact area of dust in washing water and the coal gas, not only anti-clogging plug but also water saving.
The present invention further improves, and described down atomizing sprinkler system adopts the bidirectional screw atomizing nozzle, and jet angle is 90 ° cone, places aditus laryngis inside, and upwards, both direction sprays washing water downwards, water loss is little, does not stop up good dedusting effect.
Last improvement of the present invention, described strainer is self-cleaning strainer, is located at water circulating pump exporter in the circulation cleaning water lines, good filtration effect is conducive to prevent that waterworks from stopping up.
Compared with prior art, advantage is: novel, designs simplification, configuration are reasonable, and smooth and easy, the good purification of coal gas dust removal purification process solves better that aditus laryngis damages and the drawback of the obstruction of sprinkler system; Prolong service life of equipment, washing water purify water loss and reduce save electricity significantly; Cancellation cooling tower and last tower pump group reduce investment, save a large amount of maintenance and working cost; Improve and purify gas outlet temperature, the reduction blast furnace gas process aditus laryngis pressure-losses, raising TRT generated energy.
Description of drawings
The invention will be further described for the contrast accompanying drawing below.
Fig. 1 is blast furnace gas purification apparatus structure synoptic diagram.
Fig. 2 is the venturi tube structural representation of Fig. 1.
Embodiment
Embodiment 1 is with 2500m
3Blast furnace is that example describes with the blast furnace gas purification device.
As seen from Figure 1, the blast furnace gas purification device is made of one-level literary composition formula fly-ash separator 1, secondary literary composition formula fly-ash separator 2, cyclone sediment pond 3, hot tub 4, water circulating pump 5, strainer 6 and washing water flusher.One-level literary composition formula fly-ash separator 1 is made up of venturi tube 7, gravity dehydration device 8, venturi tube aditus laryngis 9 is cylindrical, atomizing sprinkler system 10 is established in the aditus laryngis top, following atomizing sprinkler system 11 is located in the aditus laryngis, upper and lower atomizing sprinkler system is connected by pipeline, water supply valve door 12, strainer, water circulating pump and hot tub, supplies with washing water by water circulating pump.Establishing pipeline on the gravity dehydration device is connected with secondary literary composition formula dust remover roof; Divide into pipe drainage valve 13 and be connected with the cyclone sediment pond, also establish pipeline, water discharging valve is connected with strainer.Half purified gas is entered with the atomizing washing water of last atomizing sprinkler system ejection by one-level literary composition formula dust remover roof and mixes, after entering the venturi tube acceleration, bump, absorb with the atomizing washing water drop that is located at the following atomizing sprinkler system ejection in the aditus laryngis again, after entering the gravity dehydration device, dust and water droplet are separated from coal gas, enter the cyclone sediment pond by valve, overflow is to hot tub after precipitation purifies, the water circulating pump backup setting is delivered to upper and lower atomizing sprinkler system with the hot water pressurization through self-cleaning strainer, feedwater valve and is carried out washing, purifying.Coal gas enters secondary literary composition formula fly-ash separator again and purifies.Secondary literary composition formula fly-ash separator structure is identical with one-level literary composition formula fly-ash separator, what distinguish is that filler water trap 14 is set in the gravity dehydration device, the coal gas of separating from secondary literary composition formula fly-ash separator carries out second dehydration through the filler water trap, become purification coal gas, sent by pipeline, through TRT generating, cooling, the heat supply wind furnace burns and enters gaspipe network.Adopt this gas cleaning device, the washing water loss reduces water-gas ratio 2.2-2.4L/m
3, save electricity improves the purification gas temperature more than 6 ℃, reduces the inlet outlet pressure differential 5kpa of two civilian formula fly-ash separators, and a ton iron generated energy improves 5kwh.
As seen from Figure 2, the venturi tube aditus laryngis is cylindrical, simple and reasonable, makes central gas stream even, alleviates aditus laryngis wearing and tearing and knot dirt, prolongs the aditus laryngis life-span.The atomizing sprinkler system is established on aditus laryngis top, is connected and composed by endless tube 15 and eight double helix atomizing lances, and the bidirectional screw atomizing nozzle is set in the aditus laryngis, upwards, spray washing water downwards, makes that dust-laden particle and washing water fully merge the raising dust removing effects in the coal gas.
Claims (4)
1. blast furnace gas purification device, by one-level literary composition formula fly-ash separator (1), secondary literary composition formula fly-ash separator (2), cyclone sediment pond (3), hot tub (4), water circulating pump (5), strainer (6) and washing water flusher constitute, two-stage literary composition formula fly-ash separator is connected, and all be communicated with cyclone sediment pond pipe connection, hot tub is communicated with cyclone sediment pond pipe connection, it is characterized in that described washing water flusher is made of last atomizing sprinkler system (10) and following atomizing sprinkler system (11), be located at top and the aditus laryngis inside of the cylindrical aditus laryngis of venturi tube (7) (9) of two-stage literary composition formula fly-ash separator respectively; Upper and lower atomizing sprinkler system is connected with hot tub by pipeline, valve, strainer, water circulating pump.
2. blast furnace gas purification device according to claim 1 is characterized in that the described atomizing sprinkler system (10) of going up adopts 6-10 double helix atomizing lance, places venturi tube aditus laryngis (9) top.
3. blast furnace gas purification device according to claim 1, it is characterized in that described atomizing sprinkler system (11) down adopts the bidirectional screw atomizing nozzle, jet angle is 90 ° cone, places aditus laryngis inside, upwards, both direction sprays washing water downwards.
4. blast furnace gas purification device according to claim 1 is characterized in that described strainer (6) is self-cleaning strainer, is located at the water circulating pump exporter of circulation cleaning water lines.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201210052037 CN102586523B (en) | 2012-03-02 | 2012-03-02 | Blast furnace gas purification plant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201210052037 CN102586523B (en) | 2012-03-02 | 2012-03-02 | Blast furnace gas purification plant |
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| CN102586523A CN102586523A (en) | 2012-07-18 |
| CN102586523B true CN102586523B (en) | 2013-08-07 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103523837B (en) * | 2013-10-24 | 2014-09-10 | 唐祥国 | Waste heat recovery and smell removal treatment system for phenolic water |
| CN107604116B (en) * | 2017-11-03 | 2023-09-22 | 马鞍山钢铁股份有限公司 | Blast furnace gas treatment system and treatment method thereof |
| CN107663557B (en) * | 2017-11-03 | 2023-08-15 | 马鞍山钢铁股份有限公司 | Blast furnace gas power generation and purification device and treatment method thereof |
| CN107902829B (en) * | 2017-11-22 | 2021-06-01 | 武汉钢铁有限公司 | Cold rolling oil-containing and emulsion wastewater recycling process and device thereof |
| CN112813215B (en) * | 2021-01-24 | 2022-08-16 | 四川恒业硅业有限公司 | Equipment capable of fully filtering blast furnace gas |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201459173U (en) * | 2009-08-03 | 2010-05-12 | 中冶赛迪工程技术股份有限公司 | Processing device for high furnace gas purification |
| CN201952442U (en) * | 2010-12-17 | 2011-08-31 | 中冶南方工程技术有限公司 | Gas purification tower |
| CN202519281U (en) * | 2012-03-02 | 2012-11-07 | 马钢(集团)控股有限公司 | Blast furnace gas purification device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4970081B2 (en) * | 2007-02-24 | 2012-07-04 | 新日鉄エンジニアリング株式会社 | Blast furnace gas cleaning equipment and operating method thereof |
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- 2012-03-02 CN CN 201210052037 patent/CN102586523B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201459173U (en) * | 2009-08-03 | 2010-05-12 | 中冶赛迪工程技术股份有限公司 | Processing device for high furnace gas purification |
| CN201952442U (en) * | 2010-12-17 | 2011-08-31 | 中冶南方工程技术有限公司 | Gas purification tower |
| CN202519281U (en) * | 2012-03-02 | 2012-11-07 | 马钢(集团)控股有限公司 | Blast furnace gas purification device |
Non-Patent Citations (1)
| Title |
|---|
| JP特开2008-208405A 2008.09.11 |
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