CN102961963A - High-concentration nitrogen oxide waste gas catalytic decomposing device - Google Patents
High-concentration nitrogen oxide waste gas catalytic decomposing device Download PDFInfo
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- CN102961963A CN102961963A CN2012104945754A CN201210494575A CN102961963A CN 102961963 A CN102961963 A CN 102961963A CN 2012104945754 A CN2012104945754 A CN 2012104945754A CN 201210494575 A CN201210494575 A CN 201210494575A CN 102961963 A CN102961963 A CN 102961963A
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Abstract
The invention discloses a high-concentration nitrogen oxide waste gas catalytic decomposing device. The high-concentration nitrogen oxide waste gas catalytic decomposing device comprises a housing, a cavity, a waste gas inlet and a waste gas outlet, wherein the cavity is internally provided with a catalyst bed which is used for placement of a catalyst; the cavity is also provided with a heating device which can be an electric heating device; the inner wall of the cavity is provided with an insulating layer which is ceramic insulating cotton; and the housing is made of stainless steel. By adopting the high-concentration nitrogen oxide waste gas catalytic decomposing device, the problem of detoxifying treatment of the high-concentration nitrogen oxide waste gas produced in the process of nitration reaction is solved.
Description
Technical field
The present invention relates to a kind for the treatment of apparatus of nitrous oxides exhaust gas, relate in particular to the catalytic decomposition device of the high concentration nitrous oxides exhaust gas that produces in a kind of nitration reaction process.
Background technology
Nitrogen oxide is the very strong gas of a kind of poisonous and harmful, corrosivity, and the chemical reaction that the nitro compound is arranged and have nitric acid to participate in all can produce the pernicious gas of nitrogen-containing oxide, the health of serious harm environment and people, animal.
The nitrogen oxide that contains low concentration in the vehicle exhaust, the catalyst pipe that the catalyst of having been made by rare precious metal and rare earth metal consists of deals with.The high concentration nitrogen oxide that produces in the industry generally absorbs with soda solution grouting or reductant solution drip washing, but not thorough, and produces secondary pollution.Up-to-date coke reducing process, treatment effect is good, but its weak point is that equipment is huge, the tired lock of operation, expense is larger, and a large amount of catalyst is used for the consumption of himself oxidation reaction.
Summary of the invention
The object of the invention is to overcome the above-mentioned weak point of prior art, research adopts catalyst to come the catalytic decomposition high concentration nitrous oxides exhaust gas, by electric heater unit, the catalyst catalyst is heated to 900-1000 ℃, high concentration nitrous oxides exhaust gas is decomposed into nontoxic N by catalyst bed
2The invention solves in the nitration reaction process, the nothing of the high concentration nitrous oxides exhaust gas of generation poisons the processing problem.
The technical scheme that realizes the object of the invention is:
A kind of high concentration nitrous oxides exhaust gas catalytic decomposition device comprises shell, cavity, waste gas introducing port, outlet port, also is provided with catalyst bed in the cavity, and catalyst bed is used for placing the catalyst catalyst; Also be provided with heater in the cavity.Heater can make electric heater unit, and cavity inner wall is provided with heat-insulation layer, and heat-insulation layer is that ceramic thermal insulation is cotton.The material of shell is stainless steel.
The bottom of cavity is provided with the cleaning chamber, is used for collecting catalyst catalyst and the catalytic reaction products that is scattered, and is convenient to timely cleaning.Electric heater unit can be provided with the control device of heating-up temperature, heat time heating time, is convenient to the control of catalytic reaction.
The waste gas introducing port is located at the bottom of catalytic decomposition device, and outlet port is located at the top of catalytic decomposition device.Preferably, the waste gas introducing port is located at the bottom of catalytic decomposition device, and outlet port is located at the top of catalytic decomposition device.Shell is provided with observation window, is used for observing the situation of high concentration nitrous oxides exhaust gas catalytic decomposition.
The catalyst catalyst is reactive metal or carbon class material, and such as active iron, active carbon, coke, charcoal etc., the catalyst catalyst can be one or more in active iron, active carbon, coke, the charcoal.
The beneficial effect that the present invention compared with prior art has is: the catalyst catalyst with the condition of air insulated under, after external heat, with high concentration nitrous oxides exhaust gas generation catalytic reaction, nitrous oxides exhaust gas is decomposed into nontoxic N
2, avoided a large amount of catalyst catalyst to be used for the consumption of himself oxidation reaction; The accurate control of heating-up temperature, heat time heating time is convenient in the heating of employing electric heater unit, more is conducive to the control of catalytic reaction.
Figure of description
Fig. 1 is structural representation of the present invention.
The specific embodiment
The present invention is further described in more detail below in conjunction with drawings and the specific embodiments.
Embodiment 1: referring to Fig. 1, a kind of high concentration nitrous oxides exhaust gas catalytic decomposition device, comprise shell 9, cavity 5, waste gas introducing port 10, outlet port 7, catalyst catalyst charging hole 6, also be provided with catalyst bed 1 in the cavity, catalyst bed is used for placing catalyst catalyst 3; Also be provided with electric heater unit 2 in the cavity, electric heater unit can be provided with the control device of heating-up temperature, heat time heating time, is convenient to the control of catalytic reaction.Cavity 5 inwalls are provided with heat-insulation layer 8, and heat-insulation layer is that ceramic thermal insulation is cotton.The material of shell is stainless steel.Cavity is tubular, and its underpart is provided with cleaning chamber 11, is used for collecting catalyst catalyst 3 and the catalytic reaction products that is scattered, and is convenient to timely cleaning.Waste gas introducing port 10 is located at the bottom of catalytic decomposition device, and outlet port 7 is located at the top of catalytic decomposition device.Shell is provided with observation window 4, is used for observing the situation of high concentration nitrous oxides exhaust gas catalytic decomposition.
Catalyst catalyst activity iron at catalyst bed adding 1.5kg starts electric heater unit, and design temperature is 900 ℃, makes it reach behind the design temperature and maintenance.Get the dense HNO of 1000ml
3(68%) and excessive red copper reaction, when reaction is carried out, the nitrous oxides exhaust gas of generation, pass into the waste gas introducing port by ingress pipe, from observation window, can see the brownish red gas that is entered by importing, through behind the catalyst bed, the gas that becomes colorless is discharged by outlet port.
Calculate by theory: the dense HNO of 1000ml
3(68%) and excessive red copper reaction, on average per hour produces NO
242.3L 4 hours common properties are given birth to 169.2L, this gas discharges after being broken down into nontoxic nitrogen through the catalyst catalyst activity iron of 1.5kg after touch.
Embodiment 2: its difference from Example 1 is that the waste gas introducing port is located at the bottom of catalytic decomposition device, and outlet port is located at the top of catalytic decomposition device.Catalyst catalyst coke at its catalyst bed adding 1kg starts electric heater unit, and design temperature is 1000 ℃, makes it reach behind the design temperature and maintenance.Get the dense HNO of 1000ml
3(68%) and excessive red copper reaction, when reaction is carried out, the nitrous oxides exhaust gas of generation, pass into the waste gas introducing port by ingress pipe, from observation window, can see the brownish red gas that is entered by importing, through behind the catalyst bed, the gas that becomes colorless is discharged by outlet port.
Calculate by theory: the dense HNO of 1000ml
3(68%) and excessive red copper reaction, on average per hour produces NO
242.3L 4 hours common properties are given birth to 169.2L, this gas is through the coke of 1kg, discharges after being broken down into nontoxic nitrogen.
Embodiment 3: its difference from Example 2 is that the catalyst catalyst is active carbon.Start electric heater unit, design temperature is 930 ℃.
Embodiment 4: its difference from Example 2 is that the catalyst catalyst is charcoal.Start electric heater unit, design temperature is 960 ℃.
Embodiment 5: its difference from Example 2 is that the catalyst catalyst is the mixture of active carbon, coke, charcoal.Start electric heater unit, design temperature is 980 ℃.
In addition to the implementation, the present invention can also have other embodiments, and all employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop within the protection domain of requirement of the present invention.
Claims (10)
1. a high concentration nitrous oxides exhaust gas catalytic decomposition device comprises shell, cavity, waste gas introducing port, outlet port, it is characterized in that, also is provided with catalyst bed in the cavity, and catalyst bed is used for placing the catalyst catalyst; Also be provided with heater in the cavity.
2. catalytic decomposition device according to claim 1 is characterized in that, heater is electric heater unit, and cavity inner wall is provided with heat-insulation layer.
3. catalytic decomposition device according to claim 1 is characterized in that, the waste gas introducing port is located at the bottom of catalytic decomposition device, and outlet port is located at the top of catalytic decomposition device.
4. catalytic decomposition device according to claim 1 is characterized in that, the waste gas introducing port is located at the bottom of catalytic decomposition device, and outlet port is located at the top of catalytic decomposition device.
5. catalytic decomposition device according to claim 1 is characterized in that shell is provided with observation window.
6. catalytic decomposition device according to claim 2 is characterized in that, the material of shell is stainless steel, and heat-insulation layer is that ceramic thermal insulation is cotton.
7. catalytic decomposition device according to claim 1 is characterized in that, the catalyst catalyst is reactive metal or carbon class material.
8. catalytic decomposition device according to claim 1 is characterized in that, the catalyst catalyst is one or more in active iron, active carbon, coke, the charcoal.
9. catalytic decomposition device according to claim 1 is characterized in that, the bottom of cavity is provided with the cleaning chamber.
10. catalytic decomposition device according to claim 1 is characterized in that, heater is heated to 900-1000 ℃ with the catalyst catalyst.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210494575.4A CN102961963B (en) | 2012-11-28 | 2012-11-28 | High-concentration nitrogen oxide waste gas catalytic decomposing method |
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| CN201210494575.4A CN102961963B (en) | 2012-11-28 | 2012-11-28 | High-concentration nitrogen oxide waste gas catalytic decomposing method |
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| CN102961963A true CN102961963A (en) | 2013-03-13 |
| CN102961963B CN102961963B (en) | 2015-02-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253671A (en) * | 2022-08-13 | 2022-11-01 | 嘉兴复翼环保科技有限公司 | NO capable of assisting power by utilizing 2 Method for realizing SCR (selective catalytic reduction) efficient denitration by using generated additive |
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| JPH0910556A (en) * | 1995-06-28 | 1997-01-14 | Sakai Chem Ind Co Ltd | Removal of nitrogen oxide |
| US20090035192A1 (en) * | 2007-07-30 | 2009-02-05 | Herng Shinn Hwang | Catalytic EGR oxidizer for IC engines and gas turbines |
| CN102000504A (en) * | 2010-09-27 | 2011-04-06 | 北京科技大学 | SCR denitration device for flue gas of glass furnace |
| CN201894909U (en) * | 2010-10-20 | 2011-07-13 | 东莞市升微机电设备科技有限公司 | Volatile organic matter treatment and catalytic reaction tank |
| CN202962270U (en) * | 2012-11-28 | 2013-06-05 | 南京金美镓业有限公司 | Catalytic decomposing device for high-concentration nitric oxide waste gas |
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2012
- 2012-11-28 CN CN201210494575.4A patent/CN102961963B/en active Active
Patent Citations (5)
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| JPH0910556A (en) * | 1995-06-28 | 1997-01-14 | Sakai Chem Ind Co Ltd | Removal of nitrogen oxide |
| US20090035192A1 (en) * | 2007-07-30 | 2009-02-05 | Herng Shinn Hwang | Catalytic EGR oxidizer for IC engines and gas turbines |
| CN102000504A (en) * | 2010-09-27 | 2011-04-06 | 北京科技大学 | SCR denitration device for flue gas of glass furnace |
| CN201894909U (en) * | 2010-10-20 | 2011-07-13 | 东莞市升微机电设备科技有限公司 | Volatile organic matter treatment and catalytic reaction tank |
| CN202962270U (en) * | 2012-11-28 | 2013-06-05 | 南京金美镓业有限公司 | Catalytic decomposing device for high-concentration nitric oxide waste gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115253671A (en) * | 2022-08-13 | 2022-11-01 | 嘉兴复翼环保科技有限公司 | NO capable of assisting power by utilizing 2 Method for realizing SCR (selective catalytic reduction) efficient denitration by using generated additive |
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| CN102961963B (en) | 2015-02-04 |
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Effective date of registration: 20200318 Address after: Kazuo Economic Development Zone, Chaoyang City, Liaoning Province Patentee after: Chaoyang Jinmei gallium Industry Co., Ltd Address before: 211165, No. 718, general road, Jiangning Development Zone, Nanjing, Jiangsu Patentee before: NANJING JINMEI GALLIUM Ltd. |