CN103127816A - Processing method of waste gas containing carbonyl iron - Google Patents
Processing method of waste gas containing carbonyl iron Download PDFInfo
- Publication number
- CN103127816A CN103127816A CN2013100830830A CN201310083083A CN103127816A CN 103127816 A CN103127816 A CN 103127816A CN 2013100830830 A CN2013100830830 A CN 2013100830830A CN 201310083083 A CN201310083083 A CN 201310083083A CN 103127816 A CN103127816 A CN 103127816A
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- China
- Prior art keywords
- waste gas
- graphite
- carbonyl iron
- processing method
- absorption tower
- 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.)
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- 239000002912 waste gas Substances 0.000 title claims abstract description 78
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 74
- 238000003672 processing method Methods 0.000 title claims abstract description 19
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 44
- 239000010439 graphite Substances 0.000 claims abstract description 44
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000007789 gas Substances 0.000 claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 11
- 238000007599 discharging Methods 0.000 claims abstract description 11
- 238000002485 combustion reaction Methods 0.000 claims abstract description 9
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims abstract description 7
- 238000010521 absorption reaction Methods 0.000 claims description 40
- 229910052742 iron Inorganic materials 0.000 claims description 14
- 238000000354 decomposition reaction Methods 0.000 claims description 6
- 230000008676 import Effects 0.000 claims description 6
- 230000035484 reaction time Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 abstract description 4
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract 1
- 229910002091 carbon monoxide Inorganic materials 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention relates to a metallurgical technology, and especially discloses a processing method of waste gas containing carbonyl iron. The processing method is characterized by comprising the following steps of: a, soaking graphite by utilizing a hypochlorite solution; b, placing the graphite in an absorbing tower, and introducing the waste gas mixed with the carbonyl iron in the absorbing tower; c, controlling the waste gas to stay in the absorbing tower, wherein the carbonyl iron in the waste gas has chemical reaction with hypochlorous acid to generate CO gas and ferriferous oxide which is adhered and deposited on the graphite; and d, discharging decomposed and desorbed carbon monoxide gas out of the absorbing tower, guiding into a CO waste gas cabinet, burning the integrally collected CO waste gas in a waste gas combustion furnace, and finally discharging to atmosphere. The processing method provided by the invention adopts the graphite as a reaction carrier, the graphite is utilized to adsorb a hypochlorite solution so as to process the waste gas containing carbonyl iron impurities, the processing method is particularly suitable for processing waste gas the carbonyl iron content of which is 2.5-8 mg/L, the hypochlorite reacts with the carbonyl iron impurities, the green ferriferous oxide is deposited on the graphite, and the utilization ratio of the metal is improved; and meanwhile, the waste gas discharge is reduced, and the processing method is clean and environment-friendly.
Description
Technical field
The present invention relates to metallurgical technology, particularly a kind of processing method that contains carbonyl iron waste gas.
Background technology
Carbonyl iron is a kind of volatile extremely toxic substance that has, and can produce some and contain the waste gas of micro-carbonyl iron in the carbonyl iron production process, and this gas is necessary disinfection before discharging, further reduces carbonyl iron content in waste gas.The method that generally adopts at present is to be passed in incinerator this waste gas emptying after the high-temp combustion sterilization.Although this method can play the purpose of sterilization, the carbonyl iron in waste gas is difficult to remove fully, is unfavorable for environmental protection.
Summary of the invention
The object of the invention is to overcome in existing waste gas treatment process directly discharging or simple combustion and process and cause in waste gas carbonyl iron content higher, cause the problem of environmental pollution, a kind of processing method that contains carbonyl iron waste gas that provides.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of processing method that contains carbonyl iron waste gas is characterized in that step is as follows:
A, soak graphite with hypochlorite solutions;
B, graphite is packed in the absorption tower, the waste gas that will be mingled with carbonyl iron passes into the absorption tower;
C, control waste gas rest in the absorption tower, and carbonyl iron and hypochlorous acid generation chemical reaction in waste gas generate CO gas and oxides-containing iron, and the oxides-containing iron adventitious deposit is on graphite;
The CO gas that d, decomposition discharge imports CO waste gas cabinet after discharging the absorption tower, and the unified CO waste gas of collecting is burned at waste gas combustion furnace, drains at last atmosphere.
Hypochlorite with 0.5～1.5mol/L in described step a soaked graphite 0.5～1 hour.
In described step c, waste gas stops reaction time 〉=5min in the absorption tower.
Described graphite is selected club shaped structure, is highly 3～6m, vertically is arranged in the absorption tower, and graphite and absorption tower air inlet leave 0.5～1m gap.
Described graphite service life is 2 years, every two years changes.
The present invention selects graphite as reaction carriers, with graphite absorption hypochlorite solutions, the waste gas that contains carbonyl iron impurity is processed, be particularly suitable for processing the waste gas that carbonyl iron content is 2.5～8mg/L, hypochlorite and the reaction of carbonyl iron impurity, deposit green oxides-containing iron on graphite, improved the utilization rate of metal.Also reduced simultaneously the discharging of waste gas, more clean environment firendly.In addition, graphite is selected club shaped structure, is highly 3～6m, vertically be arranged in the absorption tower, graphite and absorption tower air inlet leave 0.5～1m gap, and the cloth set direction of graphite rod is identical through direction with waste gas streams, make waste gas fully contact with hypochlorite solutions, adsorption rate is high; Graphite rod every two years changes to reach better recovering effect.
The specific embodiment
The invention provides a kind of processing method that contains carbonyl iron waste gas, the concrete technology step is as follows:
A, soaked graphite 0.5～1 hour with the hypochlorite solutions of 0.5～1.5mol/L;
B, graphite is packed in the absorption tower, the waste gas that will be mingled with carbonyl iron passes into the absorption tower;
C, control waste gas rest in the absorption tower, and waste gas stops reaction time 〉=5min in the absorption tower.Carbonyl iron and hypochlorous acid generation chemical reaction in waste gas generate CO gas and oxides-containing iron, and the oxides-containing iron adventitious deposit is on graphite;
The CO gas that d, decomposition discharge imports CO waste gas cabinet after discharging the absorption tower, and the unified CO waste gas of collecting is burned at waste gas combustion furnace, drains at last atmosphere.
Wherein graphite is selected club shaped structure, is highly 3～6m, vertically is arranged in the absorption tower, and graphite and absorption tower air inlet leave 0.5～1m gap.Can suitably adjust height and gap according to the installation site on absorption tower, graphite rod is fully contacted with waste gas.In addition, strike off oxides-containing iron on graphite after every secondary response in addition, and every two years change graphite rod to reach best reaction adsorption effect.
Embodiment 1:
A kind of processing method that contains carbonyl iron waste gas, step is as follows:
A, soaked graphite 0.5 hour with the hypochlorite solutions of 0.5 mol/L;
B, graphite rod is packed in the absorption tower, the waste gas (carbonyl iron content is 8mg/L) that will be mingled with carbonyl iron passes into the absorption tower;
C, control waste gas rest in the absorption tower, and waste gas stops the reaction time in the absorption tower be 5min.Carbonyl iron and hypochlorous acid generation chemical reaction in waste gas generate CO gas and oxides-containing iron, and the oxides-containing iron adventitious deposit is on graphite;
The CO gas that d, decomposition discharge imports CO waste gas cabinet after discharging the absorption tower, and the unified CO waste gas of collecting is burned at waste gas combustion furnace, drains at last atmosphere.
The carbonyl iron content of emission gases drops to 0.4mg/L by 8mg/L after testing, has reached emission request, can not produce harm to atmosphere and human body.
Embodiment 2:
A kind of processing method that contains carbonyl iron waste gas, step is as follows:
The hypochlorite solutions of a, use 1.5mol/L soaked graphite 1 hour;
B, graphite rod is packed in the absorption tower, the waste gas (carbonyl iron content is 8mg/L) that will be mingled with carbonyl iron passes into the absorption tower;
C, control waste gas rest in the absorption tower, and waste gas stops the reaction time in the absorption tower be 7min.Carbonyl iron and hypochlorous acid generation chemical reaction in waste gas generate CO gas and oxides-containing iron, and the oxides-containing iron adventitious deposit is on graphite;
The CO gas that d, decomposition discharge imports CO waste gas cabinet after discharging the absorption tower, and the unified CO waste gas of collecting is burned at waste gas combustion furnace, drains at last atmosphere.
The carbonyl iron content of emission gases drops to 0.1mg/L by 8mg/L after testing, has reached emission request, can not produce harm to atmosphere and human body.
Embodiment 3:
A kind of processing method that contains carbonyl iron waste gas, step is as follows:
A, soaked graphite 0.8 hour with the hypochlorite solutions of 1.0 mol/L;
B, graphite rod is packed in the absorption tower, the waste gas (carbonyl iron content is 8mg/L) that will be mingled with carbonyl iron passes into the absorption tower;
C, control waste gas rest in the absorption tower, and waste gas stops the reaction time in the absorption tower be 6min.Carbonyl iron and hypochlorous acid generation chemical reaction in waste gas generate CO gas and oxides-containing iron, and the oxides-containing iron adventitious deposit is on graphite;
The CO gas that d, decomposition discharge imports CO waste gas cabinet after discharging the absorption tower, and the unified CO waste gas of collecting is burned at waste gas combustion furnace, drains at last atmosphere.
The carbonyl iron content of emission gases drops to 0.25mg/L by 8mg/L after testing, has reached emission request, can not produce harm to atmosphere and human body.
Claims (5)
1. processing method that contains carbonyl iron waste gas is characterized in that step is as follows:
A, soak graphite with hypochlorite solutions;
B, graphite is packed in the absorption tower, the waste gas that will be mingled with carbonyl iron passes into the absorption tower;
C, control waste gas rest in the absorption tower, and carbonyl iron and hypochlorous acid generation chemical reaction in waste gas generate CO gas and oxides-containing iron, and the oxides-containing iron adventitious deposit is on graphite;
The CO gas that d, decomposition discharge imports CO waste gas cabinet after discharging the absorption tower, and the unified CO waste gas of collecting is burned at waste gas combustion furnace, drains at last atmosphere.
2. a kind of processing method that contains carbonyl iron waste gas according to claim 1, is characterized in that in described step a, the hypochlorite with 0.5～1.5mol/L soaked graphite 0.5～1 hour.
3. a kind of processing method that contains carbonyl iron waste gas according to claim 1, is characterized in that in described step c, waste gas stops reaction time 〉=5min in the absorption tower.
4. a kind of processing method that contains carbonyl iron waste gas according to claim 1 is characterized in that described graphite selects club shaped structure, is highly 3～6m, vertically is arranged in the absorption tower, and graphite and absorption tower air inlet leave 0.5～1m gap.
5. a kind of processing method that contains carbonyl iron waste gas according to claim 4 is characterized in that described graphite service life is 2 years, every two years changes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310083083.0A CN103127816B (en) | 2013-03-15 | 2013-03-15 | Processing method of waste gas containing carbonyl iron |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310083083.0A CN103127816B (en) | 2013-03-15 | 2013-03-15 | Processing method of waste gas containing carbonyl iron |
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| Publication Number | Publication Date |
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| CN103127816A true CN103127816A (en) | 2013-06-05 |
| CN103127816B CN103127816B (en) | 2015-04-15 |
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| CN201310083083.0A Active CN103127816B (en) | 2013-03-15 | 2013-03-15 | Processing method of waste gas containing carbonyl iron |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089886A (en) * | 1977-07-21 | 1978-05-16 | Celanese Corporation | Methanol purification |
| US4830760A (en) * | 1988-02-29 | 1989-05-16 | Gaf Corporation | Treatment of iron waste |
| CN1304014A (en) * | 1999-12-22 | 2001-07-18 | 中国科学院山西煤炭化学研究所 | Method for treating uns-dimethylhydrazine waste gas in combustion of gas fuel and its equipment |
| JP2003222322A (en) * | 2002-01-30 | 2003-08-08 | Nippon Shokubai Co Ltd | Treatment method for waste from manufacturing process of acrylic-acid and polyacrylic-acid |
| CN1818101A (en) * | 2006-03-17 | 2006-08-16 | 金川集团有限公司 | Method for recovering metallic elements from mixed gas containing carbonyl substances |
| CN1843577A (en) * | 2006-03-17 | 2006-10-11 | 金川集团有限公司 | Method for handling nickel carbonyl-containing waste gas |
-
2013
- 2013-03-15 CN CN201310083083.0A patent/CN103127816B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4089886A (en) * | 1977-07-21 | 1978-05-16 | Celanese Corporation | Methanol purification |
| US4830760A (en) * | 1988-02-29 | 1989-05-16 | Gaf Corporation | Treatment of iron waste |
| CN1304014A (en) * | 1999-12-22 | 2001-07-18 | 中国科学院山西煤炭化学研究所 | Method for treating uns-dimethylhydrazine waste gas in combustion of gas fuel and its equipment |
| JP2003222322A (en) * | 2002-01-30 | 2003-08-08 | Nippon Shokubai Co Ltd | Treatment method for waste from manufacturing process of acrylic-acid and polyacrylic-acid |
| CN1818101A (en) * | 2006-03-17 | 2006-08-16 | 金川集团有限公司 | Method for recovering metallic elements from mixed gas containing carbonyl substances |
| CN1843577A (en) * | 2006-03-17 | 2006-10-11 | 金川集团有限公司 | Method for handling nickel carbonyl-containing waste gas |
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| CN103127816B (en) | 2015-04-15 |
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Effective date of registration: 20240226 Address after: 737100 No. 2 Lanzhou Road, Beijing Road Street, Jinchuan District, Jinchang City, Gansu Province Patentee after: Jinchuan Group Nickel Cobalt Co.,Ltd. Country or region after: China Address before: 737103 No. 98 Jinchuan Road, Jinchuan District, Jinchang City, Gansu Province Patentee before: JINCHUAN GROUP Co.,Ltd. Country or region before: China |