CN1060407C - Positive pressure filtration process for smoke purification during duriron smelting - Google Patents
Positive pressure filtration process for smoke purification during duriron smelting Download PDFInfo
- Publication number
- CN1060407C CN1060407C CN98118188A CN98118188A CN1060407C CN 1060407 C CN1060407 C CN 1060407C CN 98118188 A CN98118188 A CN 98118188A CN 98118188 A CN98118188 A CN 98118188A CN 1060407 C CN1060407 C CN 1060407C
- Authority
- CN
- China
- Prior art keywords
- flue gas
- dust
- positive pressure
- pressure filtration
- fumes
- 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
Links
- 239000000779 smoke Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 10
- 238000011085 pressure filtration Methods 0.000 title claims abstract description 8
- 238000003723 Smelting Methods 0.000 title claims description 6
- 238000000746 purification Methods 0.000 title claims description 5
- 239000000428 dust Substances 0.000 claims abstract description 26
- 239000008187 granular material Substances 0.000 claims abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 28
- 239000003546 flue gas Substances 0.000 claims description 28
- 239000007789 gas Substances 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 8
- 239000000843 powder Substances 0.000 abstract description 4
- 239000000377 silicon dioxide Substances 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 2
- 239000003517 fume Substances 0.000 abstract 5
- 230000007613 environmental effect Effects 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 7
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 229910021487 silica fume Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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- Filtering Of Dispersed Particles In Gases (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The present invention relates to positive pressure filtration technology for fumes generated when silicon is smelted. The present invention is characterized in that fumes are cooled and then enter a pretreater for pretreatment so as to remove impurity powder dust of large granules, and then are guided into a bag dust remover by a main fan for positive pressure filtration; the filtered fumes are naturally exhausted, and the powder dust collected by the bag dust remover is packed for sale; a short circuit smoke tube is connected in parallel with a cooler in a fume pipeline, and is provided with a valve; the main fan is connected in parallel with a back suction fan. The present invention has the advantages of reasonable technology process and little investment, and is an item of energy saving and environment protection technique because the content of silicon dioxide in the recovered powder dust is more than 92%, and the discharge capacity of the fumes and the dust is far lower than that of environmental protection requirements.
Description
The present invention relates to ferrosilicon smelting gas cleaning filtering technique.
Existing ferrosilicon smelting flue gas process for purifying is flue gas negative pressure filtration system, be that the high-temperature flue gas that rises in the hot stove of avasite cools off through gas cooler, directly enter in the sack cleaner, utilize main air blower to make negative pressure, carry out dedusting after making flue gas inhale sack cleaner, clean flue gas discharges in the atmosphere by main air blower, and this dust collecting process has following shortcoming: the one, and floor space is big; The 2nd, high to the sealing property requirement of sack cleaner, promptly the negative pressure to deduster requires tight; The 3rd, the main air blower idle work is many, and power is big, the power consumption height; The 4th, because flue gas directly enters in the sack cleaner, the big dust particle in the flue gas easily punctures cloth bag, and the cloth bag of sack cleaner is reduced service life, the dust removing effects variation, and dioxide-containing silica is low in the dust of recovery, inconvenient maintenance; The 5th, investment is big, the use cost height.
The objective of the invention is to improve the filter effect of ferrosilicon flue gas purification system, reduce cost of investment and use cost, improve the quality of SILICA FUME quality and discharging flue gas.
The technical scheme that the present invention intends taking is: 1, a kind of positive pressure filtration process for smoke purification during duriron smelting, by gas cooler, compositions such as main air blower, it is characterized in that flue gas in the hot stove of avasite is after gas cooler cooling, entering the patent No. is the adjustable dust preprocessor of CN98216573.0, carrying out big dust particle removes in advance, utilize main air blower with the flue gas supercharging then, flue gas after the supercharging imports the filtration of carrying out the granule dust in the sack cleaner, clean flue gas after the filtration discharges in the atmosphere, a short circuit smoke pipe in parallel in flue gas pipeline with gas cooler, one valve is set, a back suction blower fan in parallel on the short circuit smoke pipe with main air blower.
Use the present invention that following advantage is arranged: the one, reduce investment 30%, two, it is nearly 40%, three to reduce floor space, and smoke discharge amount is by the 150mg/Nm of original negative pressure cleaning system
3Be reduced to present 50mg/Nm
3Below, the 4th, compare energy-conservation 20% with the negative pressure filtration system, reduced idle work to greatest extent, the 5th, improved the product quality of SILICA FUME, containing silica 80% in the dust by original negative pressure system recovery brings up to more than 92%, the 6th, prolong one times of service life of cloth bag in the sack cleaner effectively, and improved maintenance condition and condition of work.
The invention will be further described below in conjunction with accompanying drawing.
Accompanying drawing is a technological process block-diagram of the present invention.
Work of the present invention is, high-temperature flue gas rises from the hot stove of avasite, be introduced in the gas cooler (the air-cooled gas cooler of coil pipe water-cooled gas cooler or coil pipe) by main air blower and carry out flue gas cool-down, flue gas after the cooling removes the large granular impurity powder in the flue gas in advance by flue-gas treater (number of patent application is 98216573.0 adjustable dust preprocessor or cyclone dust collectors), in order to avoid big dust particle enters in the sack cleaner cloth bag is punctured and the reduction dust removing effects, also improve simultaneously the content of silica in the dust that reclaims in the sack cleaner, the flue gas that removes in advance imports sack cleaner after the main air blower supercharging (as using number of patent application is 98216679.6, the secondary air sack cleaner) filters in, clean flue gas after the filtration enters in the atmosphere, for sale by the dust that the cloth bag filtration gets off through collecting packing, if DE Smoke temperature degree is lower from the hot stove of avasite, then can flue gas directly be entered in the flue gas preprocessor short circuit smoke pipe valve open; If laying dust is more in the cloth bag in the sack cleaner, and when influencing efficiency of dust collection, close the air intake valve of sack cleaner, open the back suction blower fan, dust back suction in the cloth bag is fallen after rise, and then close the back suction blower fan, open sack cleaner air intake valve and carry out normal dedusting.
Claims (1)
1. positive pressure filtration process for smoke purification during duriron smelting, form by gas cooler, main air blower, it is characterized in that flue gas in the hot stove of avasite is after gas cooler cooling, enter adjustable dust preprocessor, carrying out big dust particle removes in advance, utilize main air blower with the flue gas supercharging then, flue gas after the supercharging imports the filtration of carrying out the granule dust in the sack cleaner, clean flue gas after the filtration discharges in the atmosphere, a short circuit smoke pipe in parallel in flue gas pipeline with gas cooler, one valve is set, a back suction blower fan in parallel on the short circuit smoke pipe with main air blower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98118188A CN1060407C (en) | 1998-09-11 | 1998-09-11 | Positive pressure filtration process for smoke purification during duriron smelting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN98118188A CN1060407C (en) | 1998-09-11 | 1998-09-11 | Positive pressure filtration process for smoke purification during duriron smelting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1222404A CN1222404A (en) | 1999-07-14 |
| CN1060407C true CN1060407C (en) | 2001-01-10 |
Family
ID=5225953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98118188A Expired - Fee Related CN1060407C (en) | 1998-09-11 | 1998-09-11 | Positive pressure filtration process for smoke purification during duriron smelting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1060407C (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269813B (en) * | 2008-04-15 | 2012-01-04 | 北京民海艳科技有限公司 | Novel technique for purification recovery of tiny silica flour |
| CN101385935B (en) * | 2008-05-23 | 2011-04-27 | 南安市三晶阳光电力有限公司 | Water-cooling dust-separating method of metallic silicon smelting furnace |
| CN101746765B (en) * | 2008-12-01 | 2012-04-18 | 贵州海天铁合金磨料有限责任公司 | Method and device for separating and purifying silicon dioxide micropowder from electric furnace dust |
| CN109092527A (en) * | 2018-08-09 | 2018-12-28 | 宜宾丝丽雅股份有限公司 | Viscose grinding process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033196A (en) * | 1988-10-24 | 1989-05-31 | 营口市有色金属提炼改制厂 | Recovery technique of zinc oxide by treatment of dust during smelting copper from copper ash |
| CN1165198A (en) * | 1996-05-09 | 1997-11-19 | 冶金工业部重庆钢铁设计研究院 | Blast furnace gas temp. regulation technology system |
-
1998
- 1998-09-11 CN CN98118188A patent/CN1060407C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1033196A (en) * | 1988-10-24 | 1989-05-31 | 营口市有色金属提炼改制厂 | Recovery technique of zinc oxide by treatment of dust during smelting copper from copper ash |
| CN1165198A (en) * | 1996-05-09 | 1997-11-19 | 冶金工业部重庆钢铁设计研究院 | Blast furnace gas temp. regulation technology system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1222404A (en) | 1999-07-14 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |