CN100386134C - Purifying catalyst for gas containing cyanogen and its preparing method - Google Patents
Purifying catalyst for gas containing cyanogen and its preparing method Download PDFInfo
- Publication number
- CN100386134C CN100386134C CNB021589747A CN02158974A CN100386134C CN 100386134 C CN100386134 C CN 100386134C CN B021589747 A CNB021589747 A CN B021589747A CN 02158974 A CN02158974 A CN 02158974A CN 100386134 C CN100386134 C CN 100386134C
- Authority
- CN
- China
- Prior art keywords
- catalyst
- transition metal
- air
- containing cyanogen
- carriers
- 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
Landscapes
- Catalysts (AREA)
Abstract
The present invention a catalyst for purifying waste gas containing cyanogen, which is formed by that materials, such as granular or formed SiO2, Al2O3, zeolite, etc., are used as carriers; the carriers are immersed in more than one transition metal compound or rare earth metal compound; the water-solubility transition metal compounds and the rare earth metal compounds are respectively immersed or simultaneously immersed in the carriers; then the carries are dried and activated in air at 80 to 600 DEG C. By using the catalyst, compounds containing cyanogen (such as hydrocyanic acid, vinyl cyanide, etc.)in air can be completely converted into innocuous compounds at 200 DEG C. Thus, the catalyst can be widely applied to the fields of chemical industry, environmental protection, etc.
Description
Affiliated technical field
The present invention relates to a kind of cyanogen exhaust gas purifying catalyst and preparation method thereof that contains.Can be used for Production by Catalytic Combustion Process and administer the technology that contains cyanogen waste gas.Can be widely used in fields such as chemical engineering industry and environmental protection.
Background technology
In some chemical process waste gas, contain the cyanides of severe toxicity, as hydrogen cyanide, propylene cyanogen etc.As not purified directly discharging, will cause serious air pollution.For similar waste gas pollution control and treatment, the direct firing method of external general employing, but do not see patent report.Directly firing method needs extra fuel, and operating cost is higher.The domestic people of having tested liquid absorption method, this method equipment more complicated, and produce hypertoxic cyanide wastewater, subsequent treatment is more loaded down with trivial details.Have some patents (CN1107867A, CN86104274A, US4769224A, US3923957A JP57153792A) has reported a kind ofly for the safeguard industries catalyst avoids poisoning, and removes the method for micro-HCN from fuel gas.The system that this method is used is different with the present invention, all is to carry out catalyzing hydrolysis in liquid, and can not carries out gas catalysis.The alloy that is mostly IIIA, IVA family that catalyst is used, as titanium-aluminium alloy (CN1107867A) albronze (JP57153792A) etc., (US3923957A) that has even need to add H
2S gas, and NH is all arranged in the product
3Gas generates.Easily cause follow-up pollution.
Summary of the invention
The objective of the invention is to solve and produce the air pollution problems inherent that contains cyanogen waste gas in some chemical processes.Employed technology is direct Production by Catalytic Combustion Process.The present invention has developed the new catalyst that does not contain noble metal, and the cleaning principle of this catalyst is as follows:
4HCN+5O
2→2N
2+2H
2O+4CO
2
4NH
3+3O
2→2N
2+3H
2O
2CO+O
2→2CO
2
This catalyst is with SiO
2, Al
2O
3, material such as zeolite is carrier, it is shaped as graininess, broken shape, sphere, column, cellular or formed body etc.; Flood more than one transistion metal compounds or rare-earth compound, the transition metal of its load is that Fe, Co, Ni, V, Cu, Zn, Mo, W, Mn, Cd and rare earth metal are more than one water soluble compound among La, Ce, the Th, and its content accounts for 0.3～30% of catalyst weight respectively; Flood respectively or be dipped in altogether on the carrier with water-soluble transistion metal compound and rare earth compound, form, dipping 3～24h in the air drying activation; Carry out 1～15h heat treatment in air dry oven or fluidized bed furnace in air atmosphere, temperature is 80～600 ℃.
The catalyst that the present invention makes is low price not only, and is 200 ℃ to the full conversion temperature of HCN, and catalytic temperature significantly reduces than noble metal catalyst.Simultaneously ammonia in the waste gas and carbon monoxide also had catalyzed conversion effect preferably.Substantially nonnitrogenous oxide in the tail gas.
The specific embodiment
Embodiment 1
With the 200g diameter is the SiO of 3～5mm sphere
2150 ℃ of baking 3h in baking oven are standby for particle.2～4g XCl (X is a transition metal described in the claim 2), 3～8g Co (NO
3)
2And 5～10gCe (NO
3)
2Be dissolved in the 50ml water, be stirred to dissolving fully; With the SiO that has got ready
2Carrier adds in the above-mentioned solution, fully stirs, and behind the placement 24h, in 100～600 ℃ of heat treatment 2～8h, makes catalyst A in baking oven.
Embodiment 2
It is in the quartz ampoule of 4cm that embodiment 1 made catalyst A is placed diameter, and the quartz ampoule that catalyst A is housed is put into tubular electric furnace, and the feeding flow is 2m
3The HCN concentration that contains of/h is 600～800mg/m
3Air, that measures HCN under different temperatures appears concentration and catalytic conversion, and the result is as shown in table 1:
Catalyst is to the conversion ratio of HCN under table 1 different temperatures
| Catalytic temperature (℃) | Inlet concentration (the mg/m of HCN 3) | Exit concentration (the mg/m of HCN 3) | The conversion ratio of HCN (%) |
| 180 | 660 | 10.2 | 84.5 |
| 190 | 689 | 1.9 | 97.3 |
| 200 | 670 | 2.0 | 99.7 |
| 210 | 705 | 0.0 | 100 |
Embodiment 3
The catalyst A of embodiment 1 preparation is used for certain factory contains the cyanogen process waste gas pollution control and treatment, the result of field trial is as shown in table 2:
Table 2 field measurement data
| Catalytic temperature (℃) | HCN inlet concentration (mg/m 3) | HCN exit concentration (mg/m 3) | HCN conversion ratio (%) |
| 200 | 285.8 | 0.679 | 99.76 |
| 250 | 316.0 | 0.571 | 99.82 |
| 300 | 478.1 | 0.572 | 99.88 |
Claims (1)
1. one kind contains the cyanogen exhaust gas purifying catalyst, it is characterized in that: described catalyst is with SiO
2Or zeolite is carrier, and described catalyst is to form with the water soluble compound of described more than one transition metal of carrier impregnation and in the air drying activation, and wherein, described transition metal is selected from Co, Ni, V, Cu, Zn, W, Mn and Cd; The weight of the water soluble compound of described transition metal accounts for 0.3～30% of catalyst weight; Described carrier be shaped as sphere, column or cellular; The dipping time of shelving of described dipping is 3～24 hours; Described is to handle in air atmosphere in air dry oven or fluidized bed furnace 1～15 hour in the air drying activation, and temperature is 80～600 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021589747A CN100386134C (en) | 2002-12-31 | 2002-12-31 | Purifying catalyst for gas containing cyanogen and its preparing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021589747A CN100386134C (en) | 2002-12-31 | 2002-12-31 | Purifying catalyst for gas containing cyanogen and its preparing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1511615A CN1511615A (en) | 2004-07-14 |
| CN100386134C true CN100386134C (en) | 2008-05-07 |
Family
ID=34237261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021589747A Expired - Fee Related CN100386134C (en) | 2002-12-31 | 2002-12-31 | Purifying catalyst for gas containing cyanogen and its preparing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100386134C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101491747B (en) * | 2008-12-10 | 2011-04-20 | 上海泰禾(集团)有限公司 | Method for processing waste gas generated in isophthalonitrile production process |
| JP5921387B2 (en) * | 2012-08-27 | 2016-05-24 | 三井金属鉱業株式会社 | Exhaust gas purification catalyst |
| CN107913594B (en) * | 2016-10-09 | 2019-12-10 | 中国石油化工股份有限公司 | Method for removing cyanogen-containing waste gas |
| CN107913595B (en) * | 2016-10-09 | 2019-12-10 | 中国石油化工股份有限公司 | Catalytic oxidation treatment method of cyanogen-containing waste gas |
| CN107913724B (en) * | 2016-10-09 | 2020-04-17 | 中国石油化工股份有限公司 | Oxidation decyanation catalyst for acrylonitrile industrial waste gas |
| CN107913725B (en) * | 2016-10-09 | 2020-04-17 | 中国石油化工股份有限公司 | Catalyst for treating waste gas containing cyanogen |
| CN107913711B (en) * | 2016-10-09 | 2020-04-17 | 中国石油化工股份有限公司 | Catalyst for oxidative decyanation of cyanogen-containing waste gas |
| CN107913698B (en) * | 2016-10-09 | 2020-04-17 | 中国石油化工股份有限公司 | Catalyst for oxidative decyanation of cyanogen-containing waste gas |
| CN107008108B (en) * | 2017-04-24 | 2020-04-17 | 中国石油化工股份有限公司 | Method for treating cyanogen-containing waste gas in ammonium sulfate-free process |
| CN111151265A (en) * | 2018-11-08 | 2020-05-15 | 中国科学院大连化学物理研究所 | Supported honeycomb catalyst, preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307930A (en) * | 2000-12-18 | 2001-08-15 | 中国人民解放军63971部队 | Chromium-free soaked active carbon and its preparation |
-
2002
- 2002-12-31 CN CNB021589747A patent/CN100386134C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1307930A (en) * | 2000-12-18 | 2001-08-15 | 中国人民解放军63971部队 | Chromium-free soaked active carbon and its preparation |
Non-Patent Citations (8)
| Title |
|---|
| r－Al2O3表面担载钒物种的紫外拉曼光谱.. 韩波等.光散射学报,，第14卷,卷第2期,期. 2002 |
| r－Al2O3表面担载钒物种的紫外拉曼光谱.. 韩波等.光散射学报,，第14卷,卷第2期,期. 2002 * |
| 利用TPD-MS、IR和XPS表征还原态Co-Mo/Al2O3.. 辛勤等.物理化学学报,，第6卷,卷第4期,期. 1990 |
| 利用TPD-MS、IR和XPS表征还原态Co-Mo/Al2O3.. 辛勤等.物理化学学报,，第6卷,卷第4期,期. 1990 * |
| 甲苯气相选择性氧化制苯甲醛－Fe-Mo-O/Al2O3催化剂研究. 盛梅等.石油化工高等学校学报,，第12卷,卷第2期,期. 1999 |
| 甲苯气相选择性氧化制苯甲醛－Fe-Mo-O/Al2O3催化剂研究. 盛梅等.石油化工高等学校学报,，第12卷,卷第2期,期. 1999 * |
| 聚丙烯腈炭纤维生产工艺中含氰废气治理.. 马兰等.炭素技术,，第5期,期. 2002 |
| 聚丙烯腈炭纤维生产工艺中含氰废气治理.. 马兰等.炭素技术,，第5期,期. 2002 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1511615A (en) | 2004-07-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100386134C (en) | Purifying catalyst for gas containing cyanogen and its preparing method | |
| US11247197B1 (en) | Core-shell structured catalyst, preparation method thereof and method for treating industrial tail gas | |
| CN104190429B (en) | A kind of preparation method of HCN hydrolyst | |
| CN108187688A (en) | It is a kind of can be at room temperature by the preparation method of the catalyst of formaldehyde complete catalysts oxidation | |
| CN107626309A (en) | A kind of method that hydrogen cyanide hydrolyst is prepared using sepiolite as carrier | |
| JP2656061B2 (en) | Purification method of oxidizing gas emission containing nitrogen oxides | |
| CN110252387A (en) | A kind of ferrum-based catalyst and its preparation method and application for high temperature denitration | |
| CN112138725A (en) | Catalytic decomposition of N2Preparation method of cobalt-based metal organic framework derivative catalyst of O | |
| CN113877611B (en) | Phosphoric acid modified manganese oxide supported catalyst and preparation method thereof | |
| CN104772037A (en) | Method for purifying acrylonitrile apparatus absorbing tower tail gas by using Pd-CeO2/Me-SAPO molecular sieve | |
| CN110075909A (en) | A kind of purification organic compounds containing nitrogen exhaust gas catalyst | |
| CN115739103B (en) | Visible light photocatalytic material CuOx@BiVO4Preparation method and application thereof | |
| CN106378145B (en) | A kind of gaseous state hydrogen peroxide catalyst and its application | |
| CN114082297A (en) | Method for decomposing nitrous oxide under low-temperature condition | |
| CN114308053A (en) | Denitration catalyst with high-entropy oxide as active component, and preparation and application thereof | |
| CN1342516A (en) | Deoxidizing agent using MnO or CuO as its active component | |
| JPH09313940A (en) | Ammonia oxidation decomposition catalyst | |
| CN110302786B (en) | Method for degrading antiepileptic drug in water by using hexagonal ferrite activated peroxymonosulfate | |
| CN109248692B (en) | Preparation method and application of hydrogen cyanide hydrolysis synergistic catalyst | |
| CN112044468A (en) | Ozone catalyst for treating reactive dye waste gas, preparation method and application thereof | |
| CN113413909A (en) | Preparation method of catalyst for selective catalytic reduction of NOx in oxygen-enriched environment | |
| JPH10225641A (en) | Low temperature denitration catalyst and its production and low temperature denitration method | |
| CN109692688A (en) | A kind of preparation and application of yellow gold nanoparticle low temperature ammoxidation catalyst | |
| CN114210314B (en) | Double-precursor carbon-based catalyst, preparation method thereof and application of double-precursor carbon-based catalyst in removing formaldehyde and mercury | |
| KR20200033024A (en) | Selective oxidation catalyst for converting gaseous ammonia into nitrogen and its production method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080507 Termination date: 20101231 |