CN103508590A - Blast furnace gas washing circulating water system - Google Patents
Blast furnace gas washing circulating water system Download PDFInfo
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- CN103508590A CN103508590A CN201310475195.0A CN201310475195A CN103508590A CN 103508590 A CN103508590 A CN 103508590A CN 201310475195 A CN201310475195 A CN 201310475195A CN 103508590 A CN103508590 A CN 103508590A
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- circulating water
- blast furnace
- furnace gas
- gas washing
- water system
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Abstract
The invention discloses a blast furnace gas washing circulating water system, and relates to a sewage treatment device. The blast furnace gas washing circulating water system comprises a parallel flow pool, a boosting pump room, an inclined plate pool, a self-flowing ditch, a primary suction well, a secondary suction well and a pump room which are sequentially connected, wherein a sodium hypochlorite oxidizing and hydroxide precipitating tank and a sewage mixing pool are further connected between the inclined plate pool and a sewage treatment plant. After practical application on a production site for some time, through detection, the average mass concentration of total cyanides in a water sample at a discharge port outside the sewage mixing pool is decreased to 4.42 mg/ L and the average mass concentration of zinc ions is 14.7l mg/ L, thus meeting standard requirements of industrial circulating water.
Description
Technical field
The present invention relates to a kind of waste disposal plant.
Background technology
Blast Furnace Gas Washing is iron making blast furnace to be ejected to the coal gas after the dedusting of dry type gravitational precipitator coming by water washing, make it to become purified gas, then delivers to the user of Metallurgical Factory and use as fuel.Because washing water directly contact with coal gas, the tiny solid impurity in coal gas (also claiming gas mud), mineral substance and objectionable impurities also enter in water, cause water quality to be polluted.The treatment process of domestic BF Gas Washing water comprises the master operations such as precipitation, cooling, water cycle scale inhibitor processing, sludge dewatering and utilization.Wherein the precipitator method are mainly removed suspended substance in water, for the outer wastewater from blast furnace of arranging of circulating treating system, seem unable to do what one wishes.Owing to containing in this type of waste water factors such as the cyanogen of zinc precipitation generation interference, chlorine, sulphur, traditional chemical precipitation treatment method is often difficult to prove effective to zinc-containing water, therefore at present domestic there is no successfully processed such waste water and made it reach the example of better removal effect or qualified discharge.
Summary of the invention
The present invention aims to provide and a kind ofly can carry out effectively the Blast Furnace Gas Washing circulating water system that dezincifies and process except cyanogen to waste water.
Blast Furnace Gas Washing circulating water system of the present invention, comprise connected successively horizontal flow basin, lift pump room, inclined plate tank, gravity flow ditch, a suction well, secondary suction well and pump house, be also connected with hypochlorite oxidation and precipitation of hydroxide pond and sewage mixing pit between described inclined plate tank and sewage work.
Preferably, in hypochlorite oxidation and precipitation of hydroxide pond, the available chlorine quality degree of depth is 250mg/L.
The present invention is by after production scene practical application for some time, and the total cyanide average quality concentration detecting in the outer relief outlet water sample of sewage mixing pit is reduced to 4.42 mg/L, and zine ion average out to 14.7l mg/L reaches the standard-required of industrial circulate water.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment mono-.
Embodiment
Embodiment mono-
Blast Furnace Gas Washing circulating water system, comprise connected successively horizontal flow basin, lift pump room, inclined plate tank, gravity flow ditch, a suction well, secondary suction well and pump house, be also connected with hypochlorite oxidation and precipitation of hydroxide pond and sewage mixing pit between described inclined plate tank and sewage work, inclined plate tank is also connected with sludge treating system in addition, No. one time suction well is also connected with cooling tower, and the cooling tower the other end is connected with secondary suction well.
Wherein in hypochlorite oxidation and precipitation of hydroxide pond, the available chlorine quality degree of depth is 250mg/L, and pH is 9-10, and temperature is 25 ℃, and the stirring reaction time of sewage in hypochlorite oxidation and precipitation of hydroxide pond is 30min.
Once, the data obtained sees the following form trial run rear every day of sampling analysis.
Known according to upper table, set up after hypochlorite oxidation and precipitation of hydroxide treatment facility, sewage mixing pit is arranged total cyanide average out to 4.42 mg/L in water outlet water sample, zine ion average out to 14.71mg/L outward, can reach total cyanide≤10 m ∥ L, the requirement of zine ion≤30 m ∥ L.
Claims (2)
1. Blast Furnace Gas Washing circulating water system, comprise connected successively horizontal flow basin, lift pump room, inclined plate tank, gravity flow ditch, a suction well, secondary suction well and pump house, is characterized in that being also connected with hypochlorite oxidation and precipitation of hydroxide pond and sewage mixing pit between described inclined plate tank and sewage work.
2. Blast Furnace Gas Washing circulating water system as claimed in claim 1, is characterized in that in hypochlorite oxidation and precipitation of hydroxide pond, the available chlorine quality degree of depth is 250mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475195.0A CN103508590A (en) | 2013-10-13 | 2013-10-13 | Blast furnace gas washing circulating water system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310475195.0A CN103508590A (en) | 2013-10-13 | 2013-10-13 | Blast furnace gas washing circulating water system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103508590A true CN103508590A (en) | 2014-01-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310475195.0A Pending CN103508590A (en) | 2013-10-13 | 2013-10-13 | Blast furnace gas washing circulating water system |
Country Status (1)
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| CN (1) | CN103508590A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105906075A (en) * | 2016-05-30 | 2016-08-31 | 安徽欣创节能环保科技股份有限公司 | Zero discharge water treatment process for blast furnace gas washing water |
| CN106348426A (en) * | 2016-10-27 | 2017-01-25 | 湖南科瑞生物制药股份有限公司 | Treating method for cyanide-containing industrial wastewater |
| CN108928970A (en) * | 2018-09-17 | 2018-12-04 | 陕西黑猫焦化股份有限公司 | A kind of chemical fertilizer factory washing coal gas circulating water purification device and method |
| CN113264610A (en) * | 2021-05-26 | 2021-08-17 | 马鞍山钢铁股份有限公司 | Wet-type electric dust removal water supply system and water supply method for gas turbine generator set |
-
2013
- 2013-10-13 CN CN201310475195.0A patent/CN103508590A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105906075A (en) * | 2016-05-30 | 2016-08-31 | 安徽欣创节能环保科技股份有限公司 | Zero discharge water treatment process for blast furnace gas washing water |
| CN105906075B (en) * | 2016-05-30 | 2019-03-08 | 安徽欣创节能环保科技股份有限公司 | One kind being applied to BF Gas Washing water zero-emission water treatment technology |
| CN106348426A (en) * | 2016-10-27 | 2017-01-25 | 湖南科瑞生物制药股份有限公司 | Treating method for cyanide-containing industrial wastewater |
| CN108928970A (en) * | 2018-09-17 | 2018-12-04 | 陕西黑猫焦化股份有限公司 | A kind of chemical fertilizer factory washing coal gas circulating water purification device and method |
| CN113264610A (en) * | 2021-05-26 | 2021-08-17 | 马鞍山钢铁股份有限公司 | Wet-type electric dust removal water supply system and water supply method for gas turbine generator set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140115 |