CN102974216A - Carbon catalytic reduction treatment method for nitrous oxide in industrial tail gas - Google Patents
Carbon catalytic reduction treatment method for nitrous oxide in industrial tail gas Download PDFInfo
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The invention discloses a carbon catalytic reduction treatment method for nitrous oxide in industrial tail gas. N2O is an important greenhouse gas, and also an important ozone layer depleting substance, the greenhouse effect of which is 270 times more than that of carbon dioxide; and the average lifetime of the N2O in the air is as long as 150 years. N2O decomposing technology applied in the industry at present mainly adopts Ni/Pt catalyst, and adopts NH3, Ch4 or CO as reducing agent. The catalyst and the reducing agent have high cost, precise process control for the flow rate of reducing gas is needed and operation cost is high, and so large-scale application of the technology is affected. According to the carbon catalytic reduction treatment method provided by the invention, a granulate carbon material is used as reducing agent, one or more transition metal oxides are used as load catalyst, so that N2O is efficiently decomposed to N2 through a synergistic effect of the carbon and the catalyst at a temperature of 150-700 DEG C under normal pressure; and the heat needed for the decomposing process is in-situ provided by an oxidizing reaction of the carbon. Besides, the method adopts easily obtained materials, has a low cost, is simple and convenient to operate, and has a great application prospect.
Description
Technical field
The invention belongs to the chemical industry tail gas process field, be specifically related to eliminate take the graininess Carbon Materials as the reducing agent catalytic reduction method of nitrous oxide in the industrial tail gas.
Background technology
Since the industrial revolution, chemical industry is fast-developing, has brought severe contamination to earth environment simultaneously, and along with a large amount of dischargings of greenhouse gases, human survival is subject to the threat of global greenhouse effect day by day.In the processing of the burning of the production of nitric acid and adipic acid, fossil fuel, junk, agricultural production process, all can produce a large amount of nitrous oxides, and the greenhouse effects of nitrous oxide are more than 270 times of carbon dioxide, and be a kind of important depletion of the ozone layer material, its stable in properties, the average life span in atmosphere reaches 150 years.Along with the quickening of process of industrialization, the concentration of nitrous oxide is lasting soaring with annual 0.2 ~ 0.3% speed in the atmosphere.Therefore nitrous oxide also becomes one of important greenhouse gases of Kyoto Protocol defined.Nitrous oxide has caused the great attention of national governments and scientific and technological circle to the impact of environment, and Some Enterprises and scientific worker have carried out a large amount of fruitful basic research works aspect the removing method of nitrous oxide.End is got up, and the decomposition destroy technology of nitrous oxide roughly is divided into two classes:
1. direct catalytic decomposition
Adopting this method is that nitrous oxide directly is decomposed into nitrogen and oxygen (CN1102435C by catalyst under hot conditions, CN11088505C, CN120919C, CN101480615A), reaction temperature adopts composite metal oxide, houghite and zeolites catalyst usually usually at 400 ~ 700 ℃.
Reaction equation is:
The method is strict to impurity content in the flue gas, and catalyst is expensive, and easy inactivation, and average life span is usually less than 2 years.
2. catalytic reduction method
Under high temperature and catalyst condition, allow nitrous oxide and ammonia, methane, or the reducing substances reaction such as carbon monoxide, nitrous oxide changes into nitrogen, reducing substances be oxidized to carbon dioxide and (or) water.
Representing reaction equation is:
The reducing substances that the method adopts is generally the outside gas that adds, and the amount of reducing gas need to be carried out dynamic accurately control according to the concentration of nitrous oxide in the tail gas, and is high to equipment requirement, the control difficulty is large, the Catalyst Production complex process, the life-span is short, so the integrated treatment cost is high.
Summary of the invention
This technology is take ature of coal or wood substance grain shape Carbon Materials as reducing agent, and suitably a certain amount of transition-metal catalyst of load in 150 ~ 700 ℃ temperature range, decomposes the nitrous oxide in the industrial tail gas.
The charcoal catalytic reduction processing method of nitrous oxide in the industrial tail gas, it is characterized in that: take ature of coal or wooden graininess Carbon Materials as catalyst carrier and reducing agent, under 150 ~ 700 ℃ of conditions, through the 0.3-5.0s contact, nitrous oxide is efficiently decomposed, generate nitrogen, oxygen and carbon dioxide.
For accelerating the speed of above-mentioned reduction reaction, reduce the decomposition reaction temperature of nitrous oxide, the present invention can also be on ature of coal or wooden graininess Carbon Materials according to one or more transition metal oxides of metallic atom quality meter load 0.001% ~ 15% as catalyst
Further, transition metal oxide selects the metal oxide of Cu, Ni, Co, Fe, Zn, Mn or Ce.
Further, the precursor of metal oxide is selected metal nitrate, an amount of graininess Carbon Materials was flooded 24-72 hour in the metal nitrate aqueous solution, and then for subsequent use after calcining 1 ~ 3 hour under 200 ~ 400 ℃ of conditions.
The present invention is directed to the practical problem of the nitrous oxide decomposition technique of present industrial application, proposed a kind of more economic, efficient treatment technology.
The specific embodiment
Following embodiment has described know-why of the present invention, implementation process and effect in detail, but does not consist of limitation of the scope of the invention.
Embodiment 1
Coal mass active carbon is ground, sieve into 10 ~ 20 orders, take by weighing 12.0 g, insert in Φ 10 * 650 mm stainless steel tubular type reactors (bore 5 mm, effective length 200 mm), gas passes through reactor with 100 mL/min, 0.47 second time of contact, gas composition is nitrous oxide 42%, oxygen 5%, nitrogen 53%.When temperature of reactor was 550 ℃, the elimination factor of nitrous oxide reached 21.5%.
Embodiment 2
Coal mass active carbon is ground, sieve into 30 ~ 40 orders, take by weighing 12.0g, insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), gas passes through reactor, 0.94 second time of contact with 50 mL/min, gas composition is nitrous oxide 42%, oxygen 5%, nitrogen 53%.When temperature of reactor was 500 ℃, the nitrous oxide elimination factor reached 58.7%.When the stainless steel reaction actuator temperature was 550 ℃, 600 ℃, 700 ℃, the elimination factor of nitrous oxide all reached 100%.
Embodiment 3
Coal mass active carbon is ground, sieve into 30 ~ 40 orders, take by weighing 12.0 g, insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), gas passes through reactor, 0.47 second time of contact with 100 mL/min, gas composition is nitrous oxide 42%, oxygen 5%, nitrogen 53%.When temperature of reactor was 550 ℃, the nitrous oxide elimination factor reached 97.5%.And when temperature of reactor was 600 ℃ and 700 ℃, the elimination factor of nitrous oxide all reached 100%.
Embodiment 4
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 8.5 g, insert in the stainless steel tubular type reactor of Φ 10 * 650 mm (the same), gas with 50 mL/min by reactor, 0.94 second time of contact, gas composition is nitrous oxide 42%, oxygen 5%, nitrogen 53%.When temperature of reactor was 500 ℃, the nitrous oxide elimination factor reached 51.7%.When temperature of reactor was respectively 550 ℃, 600 ℃, 700 ℃, the elimination factor of nitrous oxide all reached 100%.
Embodiment 5
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 8.5g, insert in the stainless steel tubular type reactor of Φ 10 * 650 mm (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 500 ℃, the nitrous oxide elimination factor reached 39%.When temperature of reactor was respectively 550 ℃, 600 ℃, 700 ℃, the nitrous oxide elimination factor all reached 100%.
Embodiment 6
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Mn (NO
3)
2(50% aqueous solution) 1.952 g(load capacity count 1% with the Mn atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 350 ℃, the nitrous oxide elimination factor reached 2%.Be 400 ℃ at temperature of reactor, the nitrous oxide elimination factor reaches 13%.When temperature of reactor was 450 ℃, the nitrous oxide elimination factor reached 49%.When temperature of reactor was respectively 500,600,700 ℃, the nitrous oxide elimination factor all reached 100%.
Embodiment 7
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Fe (NO
3)
39H
2O 2.164 g(load capacity count 1% with the Fe atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 350 ℃, the nitrous oxide elimination factor reached 1%.When temperature of reactor was 400 ℃, the nitrous oxide elimination factor reached 17%.When temperature of reactor was 450 ℃, the nitrous oxide elimination factor reached 81%.When temperature of reactor was 500 ℃, the nitrous oxide elimination factor reached 94%.
Embodiment 8
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Co (NO
3)
26H
2O 1.505 g(load capacity count 1% with the Co atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 350 ℃, the nitrous oxide elimination factor reached 13%.Be 400 ℃ at temperature of reactor, the nitrous oxide elimination factor reaches 35%.When temperature of reactor was 450 ℃, the nitrous oxide elimination factor reached 66%.When temperature of reactor was respectively 500,600,700 ℃, the nitrous oxide elimination factor all reached 100%.
Embodiment 9
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Co (NO
3)
26H
2O 1.505 g(load capacity count 1% with the Co atom), Ce (NO
3)
36H
2O 0.112 g(load capacity counts 0.001% with the Ce atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 350 ℃, the nitrous oxide elimination factor reached 17%.When temperature of reactor was 400 ℃, the nitrous oxide elimination factor reached 35%.When temperature of reactor was 450 ℃, the nitrous oxide elimination factor reached 61%.When temperature of reactor was respectively 500,600,700 ℃, the nitrous oxide elimination factor all reached 100%.
Embodiment 10
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Ni (NO
3)
26H
2O 1.486 g(load capacity count 1% with the Ni atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 350 ℃, the nitrous oxide elimination factor reached 5%.When temperature of reactor was 400 ℃, the nitrous oxide elimination factor reached 29%.When temperature of reactor was 450 ℃, the nitrous oxide elimination factor reached 100%.
Embodiment 11
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Zn (NO
3)
26H
2O 1.373 g(load capacity count 1% with the Zn atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 350 ℃, the nitrous oxide elimination factor reached 1%.Be 400 ℃ at temperature of reactor, the nitrous oxide elimination factor reaches 5%.When temperature of reactor was 450 ℃, the nitrous oxide elimination factor reached 28%.When temperature of reactor was respectively 500,600,700 ℃, the nitrous oxide elimination factor all reached 100%.
Embodiment 12
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Ce (NO
3)
36H
2O 0.928 g(load capacity counts 1% with the Ce atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 350 ℃, the nitrous oxide elimination factor reached 4%.Be 400 ℃ at temperature of reactor, the nitrous oxide elimination factor reaches 8%.When temperature of reactor was 450 ℃, the nitrous oxide elimination factor reached 30%.When temperature of reactor was respectively 500,600,700 ℃, the nitrous oxide elimination factor all reached 100%.
Embodiment 13
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Cu (NO
3)
23H
2O 1.141 g(load capacity count 1% with the Cu atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 350 ℃, the nitrous oxide elimination factor reached 10%.When temperature of reactor was 400 ℃, the nitrous oxide elimination factor reached 100%.
Embodiment 14
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Cu (NO
3)
23H
2O 5.705 g(load capacity count 5% with the Cu atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When answering actuator temperature to be 300 ℃, the nitrous oxide elimination factor reaches 10%.When temperature of reactor was 325 ℃, the nitrous oxide elimination factor reached 21%.When temperature of reactor was 350 ℃, the nitrous oxide elimination factor reached 100%.
Embodiment 15
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Cu (NO
3)
23H
2O 10.269 g(load capacity count 9% with the Cu atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 4.7 seconds times of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 10 mL/min.When temperature of reactor was 300 ℃, the nitrous oxide elimination factor reached 15%.When temperature of reactor was 325 ℃, the nitrous oxide elimination factor reached 30%.When temperature of reactor was 350 ℃, the nitrous oxide elimination factor reached 100%.
Embodiment 16
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Cu (NO
3)
23H
2O 10.269 g(load capacity count 9% with the Cu atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 300 ℃, the nitrous oxide elimination factor reached 21%.When temperature of reactor was 325 ℃, the nitrous oxide elimination factor reached 100%.
Embodiment 17
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Cu (NO
3)
23H
2O 10.269 g(load capacity count 9% with the Cu atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.31 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 150 mL/min.When temperature of reactor was 300 ℃, the nitrous oxide elimination factor reached 12%.When temperature of reactor was 325 ℃, the nitrous oxide elimination factor reached 100%.
Embodiment 18
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Cu (NO
3)
23H
2O 17.115 g(load capacity count 15% with the Cu atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 300 ℃, the nitrous oxide elimination factor reached 39%.When temperature of reactor was 325 ℃, the nitrous oxide elimination factor reached 100%.
Embodiment 19
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Cu (NO
3)
23H
2O 10.269 g(load capacity count 9% with the Cu atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 200 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 150 ℃, the nitrous oxide elimination factor reached 1%.When temperature of reactor was 250 ℃, the nitrous oxide elimination factor reached 21%.When temperature of reactor was 275 ℃, the nitrous oxide elimination factor reached 100%.
Embodiment 20
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Cu (NO
3)
23H
2O 10.269 g(load capacity count 9% with the Cu atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 300 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 200 ℃, the nitrous oxide elimination factor reached 2%.When temperature of reactor was 250 ℃, the nitrous oxide elimination factor reached 10%.When temperature of reactor was 275 ℃, the nitrous oxide elimination factor reached 27%.When temperature of reactor was 300 ℃, the nitrous oxide elimination factor reached 100%.
Embodiment 21
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Cu (NO
3)
23H
2O 10.269 g(load capacity count 9% with the Cu atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 200 ℃ the calcining 1 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 250 ℃, the nitrous oxide elimination factor reached 18%.During at 275 ℃, the nitrous oxide elimination factor reaches 100% at temperature of reactor.
Embodiment 22
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Cu (NO
3)
23H
2O 10.269 g(load capacity count 9% with the Cu atom) the aqueous solution in, slowly stir 24 h, the oven dry, in Muffle furnace with 200 ℃ the calcining 3h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 250 ℃, the nitrous oxide elimination factor reached 16%.When temperature of reactor was 275 ℃, the nitrous oxide elimination factor reached 100%.
Embodiment 23
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Cu (NO
3)
23H
2O 17.115 g(load capacity count 15% with the Cu atom) the aqueous solution in, slowly stir 48 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 300 ℃, the nitrous oxide elimination factor reached 42%.When temperature of reactor was 325 ℃, the nitrous oxide elimination factor reached 100%.
Embodiment 24
Wood activated charcoal is ground, sieve into 10 ~ 20 orders, take by weighing 30 g, pour into and contain Cu (NO
3)
23H
2O 17.115 g(load capacity count 15% with the Cu atom) the aqueous solution in, slowly stir 72 h, the oven dry, in Muffle furnace with 400 ℃ the calcining 2 h, get load carbon.Get load carbon 8.5 g and insert in Φ 10 * 650 mm stainless steel tubular type reactors (the same), by reactor, 0.47 second time of contact, gas composition is nitrous oxide 42% to gas, nitrogen 58% with 100 mL/min.When temperature of reactor was 300 ℃, the nitrous oxide elimination factor reached 46%.When temperature of reactor was 325 ℃, the nitrous oxide elimination factor reached 100%.
Claims (4)
1. the charcoal catalytic reduction processing method of nitrous oxide in the industrial tail gas, it is characterized in that: take ature of coal or wooden graininess Carbon Materials as catalyst carrier and reducing agent, under 150 ~ 700 ℃ of conditions, through the 0.3-5.0s contact, nitrous oxide is efficiently decomposed, generate nitrogen, oxygen and carbon dioxide.
2. it is characterized in that in accordance with the method for claim 1: on ature of coal or wooden graininess Carbon Materials according to one or more transition metal oxides of metallic atom quality meter load 0.001% ~ 15% as catalyst.
3. method according to claim 3, it is characterized in that: transition metal oxide selects the metal oxide of Cu, Ni, Co, Fe, Zn, Mn or Ce.
4. method according to claim 3, it is characterized in that: the precursor of metal oxide is selected metal nitrate, an amount of graininess Carbon Materials was flooded 24-72 hour in the metal nitrate aqueous solution, and then for subsequent use after calcining 1 ~ 3 hour under 200 ~ 400 ℃ of conditions.
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| CN2012105182897A CN102974216A (en) | 2012-12-05 | 2012-12-05 | Carbon catalytic reduction treatment method for nitrous oxide in industrial tail gas |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000051715A1 (en) * | 1999-03-05 | 2000-09-08 | E.I. Du Pont De Nemours And Company | Process for the decomposition of nitrous oxide |
| CN1660492A (en) * | 2004-12-17 | 2005-08-31 | 南化集团研究院 | Catalyst for depriving nitrogen oxide under low temperature through reduction and preparation method |
-
2012
- 2012-12-05 CN CN2012105182897A patent/CN102974216A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000051715A1 (en) * | 1999-03-05 | 2000-09-08 | E.I. Du Pont De Nemours And Company | Process for the decomposition of nitrous oxide |
| CN1344178A (en) * | 1999-03-05 | 2002-04-10 | 纳幕尔杜邦公司 | Process for decomposition of nitrous oxide |
| CN1660492A (en) * | 2004-12-17 | 2005-08-31 | 南化集团研究院 | Catalyst for depriving nitrogen oxide under low temperature through reduction and preparation method |
Non-Patent Citations (2)
| Title |
|---|
| A. DANDEKAR，M.A. VANNICE: "Decomposition and reduction of N2O over copper catalysts", 《APPLIED CATALYSIS B: ENVIRONMENTAL》 * |
| 赵丹，等: "以活性炭纤维为载体的金属氧化物上分解N2O研究", 《高校化学工程学报》 * |
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Application publication date: 20130320 |