CN101862593A - Low-temperature catalytic combustion elimination method for chlorine-containing volatile organic compounds - Google Patents
Low-temperature catalytic combustion elimination method for chlorine-containing volatile organic compounds Download PDFInfo
- Publication number
- CN101862593A CN101862593A CN201010205402A CN201010205402A CN101862593A CN 101862593 A CN101862593 A CN 101862593A CN 201010205402 A CN201010205402 A CN 201010205402A CN 201010205402 A CN201010205402 A CN 201010205402A CN 101862593 A CN101862593 A CN 101862593A
- Authority
- CN
- China
- Prior art keywords
- chlorine
- catalyst
- volatile organic
- containing volatile
- organic compound
- 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.)
- Pending
Links
Abstract
The invention discloses a catalytic combustion method for chlorine-containing volatile organic compounds. In the method, titanium oxide supported vanadium oxide is used as a combustion catalyst, the air serving as an oxidant is intruded into a reactor to enable the chlorine-containing volatile organic compounds to combust completely in the presence of the catalyst, the chlorine-containing volatile organic compounds thus are converted into carbon dioxide, hydrogen chloride and chlorine, the complete combustion tail gases can be passed through diluted alkaline solution for absorbing (hydrogen chloride, chlorine and other acidic gases), and the remaining tail gases are discharged into the atmosphere. The catalyst used by the method has high activity, avoids producing side products and secondary pollution, has high chlorine poisoning resistance and long catalytic service life and is particularly suitable to be used for the low-temperature complete catalytic combustion elimination of halogen-containing organic compounds, particularly the chlorine-containing volatile organic compounds.
Description
Technical field
The invention belongs to the catalytic combustion environmental protection technical field, specially refer to a kind of method that chlorine-containing volatile organic compound by low-temperature catalytic combustion is eliminated that is used for.
Background technology
The chlorine-containing volatile hydro carbons not only can cause serious harm to human beings'health, also can cause influence lasting, accumulation property to biosystem, and can destroy atmospheric ozone layer.It all is chloride organic compound that 12 persistent organic pollutions of classifying the first place as are arranged in the united nations environment project international treaties.The chlorine-containing volatile hydro carbons divides the aromatic hydrocarbon chloride, as chlorobenzene, dichloro-benzenes, and non-aromatic face cream fat hydro carbons chloride, as dichloroethanes, trichloro-ethylene, tetrachloro-ethylene, chloromethanes and methane polychloride etc., the former results from waft white, the heat treatment of chlorine-containing compound and the recovery of metal of the wood pulp of chloro oxidant; The latter mainly results from chlorine industry oxygen chlorine legal system and is equipped with industries such as vinyl chloride process, process hides, washing, pharmacy.Because the muriatic process of above-mentioned generation all relates to the industry of present stage national economy, the discharging of a large amount of chlorine-containing compounds is inevitable.Therefore, the pollution that is caused from source elimination chlorine-containing volatile hydro carbons does not also possess possibility at present.And the pollution that the method elimination chlorine-containing volatile hydro carbons of taking post processing is brought becomes unique feasible approaches and methods.
In recent years, the comprehensive regulation to volatile organic compound (VOCs) had received concern more and more widely.Methods such as flame combustion, catalytic combustion and absorption are to eliminate the common method of these pollutants.But flame combustion need carry out under higher temperature (1000 ℃), and energy consumption is big; And this method is also causing more highly toxic bioxin (Dioxins) pollutant aspect the chloride hydro carbons of processing, as many chlorodiphenyls and bioxin (PCDD) and polychlorinated dibenzo (PCDF).Absorption method as one of organic pollution common method is unsatisfactory for the treatment effect of low concentration pollutant, and its adsorption efficiency is extremely low.For the elimination of the chloride aromatic hydrocarbon of effumability, the method for multiple novelty has been proposed recently in succession, as biological processes, photocatalytic degradation, hydrogenation-dechlorination etc.But these methods are not to have defective technically, are exactly that disposal cost is high, all are in the laboratory research state mostly, are difficult for realizing industrialization, industrialization.
Advantages such as the pollution that catalytic combustion is eliminated organic compound is a kind of energy-conservation, economic, effective processing method, compares with flame combustion, and it has, and ignition temperature is low, the time of staying short, required reactor is little, secondary pollution is few.Therefore, catalytic combustion is obtaining using widely aspect the elimination volatile organic compound.
Chlorination aromatic hydrocarbon such as chlorobenzene, dichlorobenzene, Dioxin, its catalytic combustion is mainly used in the exhaust-gas treatment of incinerator, and the research work of this direction and the exploitation of technology concentrate on Japan.Representational patent has Jpn.Kokai Tokkyo Koho JP 2001286729A2, Jpn.Kokai Tokkyo Koho JP2001286730A2, Jpn.Kokai Tokkyo Koho JP 2001286734A2, Jpn.Kokai TokkyoKoho JP 10085559A2 etc.Use fuel gas and air to burn.The main catalyst activity component of using is transition metal and noble metal, and carrier is SiO
2, Al
2O
3, TiO
2, ZrO
2Though precious metal catalyst is active higher, is easy to fluorine poisoning; The anti-poisoning capability of non-precious metal catalyst is stronger, but selectivity is lower, often has polystream to produce.
Part chlorination aromatic hydrocarbon catalytic combustion granted patent has:
[1]Nawama，Junichi；Moriya，Yoshifumi；Suzuki，Tadashi；Kuchino，Kunikazu，Jpn.Kokai?Tokkyo?Koho?JP?2002219364A2
[2]Kiyono，Kenichi；Uchida，Masaaki；Adachi，Kentaro；Nishii，Kazuhiro，Jpn.Kokai?Tokkyo?Koho?JP?2001286729A2
[3]Kiyono，Kenichi；Uchida，Masaaki；Adachi，Kentaro；Nishii，Kazuhiro，Jpn.Kokai?Tokkyo?Koho?JP?2001286730A2
[4]Kajikawa，Osamu；Wang，Hsiang?Sheng；Kawase，Noborn；Maeda，Takeshi，Jpn.Kokai?Tokkyo?Koho?JP?2001009284A2.
[5]Kiyono，Kenichi；Uchida，Masaaki；Adachi，Kentaro；Nishii，Kazuhiro，Jpn.Kokai?Tokkyo?Koho?JP?2001286734A2
[6]Moriya，Yoshifumi；Nawama，Junichi；Tokumitsu，Shuzo，Jpn.Kokai?Tokkyo?Koho?JP?2001327869A2
These patent works mainly are to be active component with the transition metal, and catalytic combustion purifies De bioxin in the incinerator.
All there is shortcoming more or less in the catalyst that above-mentioned chlorine-containing volatile hydro carbons catalytic combustion elimination is adopted, low as catalytic combustion activity, have the polychlorocarbon class to produce, easily cause secondary pollution in the catalyticing combustion process, the catalyst activity component runs off easily, catalyst life short.
Summary of the invention
The objective of the invention is to disclose a kind of easy-to-volatile chloroarene and fat hydrocarbon low-temperature catalytic burning method of being used for, this method is a combustion catalyst with titania oxide supported vanadium oxide, its activity is high, no coupling product generates, do not cause secondary pollution, anti-fluorine poisoning ability is strong, catalyst life is long, be specially adapted to complete catalytic combustion and eliminate halogen-containing organic compound, especially effumability chloro-hydrocarbons pollutant.
The invention provides a kind of catalyst that chlorine-containing volatile organic compound by low-temperature catalytic combustion is eliminated that is used for, this catalyst mainly is made of titania oxide supported vanadium oxide, and the method for titania precursor body well known in the art hydrolysis is adopted in the preparation of carrier titanium oxide.The titania precursor body can be butyl titanate Ti (OC
4H
9)
4, titanium tetrachloride TiCl
4
Dipping method well known in the art is adopted in the preparation of titania oxide supported vanadium oxide catalyst system, and wherein vanadium oxide content is 1～10%.The presoma of vanadium oxide is selected from ammonium metavanadate NH
4VO
3
The invention provides a kind of method that complete catalytic combustion is eliminated the environment chlorine-containing volatile organic compound that is used for, it is characterized in that, in the presence of catalyst, to bring reactor into as the air of oxidant, make chlorine-containing volatile organic compound completing combustion under the effect of catalyst, chlorine-containing volatile organic compound is transformed into carbon dioxide, hydrogen chloride and chlorine.Completing combustion tail gas can adopt dilute alkaline soln to absorb back emptying such as (hydrogen chloride/chlorine sour gas);
Reaction pressure is 0.1～1Mpa, preferred 0.1～0.5Mpa, especially 0.1Mpa, and near normal pressure, temperature is 100～400 ℃, is preferably 150～300 ℃, especially 250 ℃;
Catalyst consumption, must be enough to make chlorine-containing volatile organic compound existing under the situation at air, change into carbon dioxide and hydrogen chloride, generally speaking, the concentration of chlorine-containing volatile aromatic hydrocarbon is 0.02～5vol% in the waste gas of chlorine-containing volatile organic compound, and every gram catalyst treatment exhausted air quantity is 10～40L per hour;
Adopt method of the present invention, in air, under lower reaction temperature, in the presence of catalyst, can long-term and stably the chlorine-containing volatile organic compound in the waste gas be transformed into carbon dioxide and hydrogen chloride, activity of such catalysts does not reduce.
Catalyst provided by the invention has characteristics such as preparation technology is simple, cheap, catalytic activity is high, anti-fluorine poisoning ability is strong, the life-span is long; Technology path is convenient and practical, and the catalytic combustion that can be widely used in the chlorine-containing volatile organic compound pollutant in papermaking, pharmacy, process hides, washing and the chemical industry waste gas is eliminated.
The specific embodiment
Embodiment 1
With commercially available 80mL butyl titanate Ti (OC
4H
9)
4, 320mL absolute ethyl alcohol, 4mL glacial acetic acid mix the back as A solution; 20mL deionized water, 160mL absolute ethyl alcohol, 2mL concentrated hydrochloric acid mix the back as B solution; The powerful stirring down dropwise is added drop-wise to B solution in the A solution, stirs under 60～70 ℃ of temperature, forms transparent, stable faint yellow colloidal sol, seals ageing again and forms gel.This gel is positioned in the baking oven, and dry 12h under 70 ℃ obtains xerogel.Xerogel is moved to roasting in the Muffle furnace: its concrete roasting process is: 50 ℃ begin heating, carry out temperature programming with the heating rate of 10 ℃/min, keep 5h at 480 ℃, promptly get TiO
2After the taking-up catalyst is ground to guarantee that catalyst is Powdered.
0.386g ammonium metavanadate NH
4VO
3, 1.857g oxalic acid C
2H
2O
42H
2O is added in the 10mL deionized water, mixes to be configured to maceration extract, is added to the above-mentioned TiO that makes of 10g
2, be stirred to maceration extract and absorb fully, at room temperature leave standstill 12h, again 100 ℃ of dry 12h.Will be through the TiO of dipping
2Move to roasting in the Muffle furnace: its concrete roasting process is: 50 ℃ begin heating, carry out temperature programming with the heating rate of 10 ℃/min, keep 5h at 480 ℃, promptly get 3%VOx/TiO
2With the fine catalyst compression molding, grind back screening 40-60 order particle after the taking-up.
Embodiment 2
0.193g ammonium metavanadate NH
4VO
3, 0.929g oxalic acid C
2H
2O
42H
2O is added in the 10mL deionized water, mixes to be configured to maceration extract, is added to commercially available 10g titanium oxide TiO
2, be stirred to maceration extract and absorb fully, at room temperature leave standstill 12h, again 100 ℃ of dry 12h.The catalyst roasting is with embodiment 1.1.5％VOx/TiO
2。With the fine catalyst compression molding, grind back screening 40-60 order particle after the taking-up.
Embodiment 3
0.736g ammonium metavanadate NH
4VO
3, 3.714g oxalic acid C
2H
2O
42H
2O is added in the 10mL deionized water, mixes to be configured to maceration extract, is added to commercially available 10g titanium oxide TiO
2, be stirred to maceration extract and absorb fully, at room temperature leave standstill 12h, again 100 ℃ of dry 12h.The catalyst roasting is with embodiment 1.6％VOx/TiO
2。With the fine catalyst compression molding, grind back screening 40-60 order particle after the taking-up.
Embodiment 4
The titanium tetrachloride TiCl that 20ml is commercially available
4Dropwise be added dropwise in the 200ml deionized water, stir while dripping, dropwising solution is transparency liquid, and dropping ammonia to pH=3, obtains jelly to aforementioned transparency liquid again.To be positioned in the baking oven behind the jelly suction filtration, 100 ℃ of dryings 12 hours are positioned over roasting in the Muffle furnace then, and its concrete roasting process is: 50 ℃ begin heating, carry out temperature programming with the heating rate of 10 ℃/min, keep 5h at 500 ℃, promptly get TiO
2After the taking-up catalyst is ground to guarantee that catalyst is Powdered.
Press embodiment 1 method supported V Ox, make 3%VOx/TiO
2With the fine catalyst compression molding, grind back screening 40-60 order particle after the taking-up.
Embodiment 5
Adopt embodiment 4 methods to make TiO
2Go up and press embodiment 2 method supported V Ox, make 1.5%VOx/TiO
2With the fine catalyst compression molding, grind back screening 40-60 order particle after the taking-up.
Embodiment 6
All catalyst chlorobenzene combustion activities are estimated in fixed bed little anti-(internal diameter 6mm quartz) and are carried out, and catalyst consumption is 200mg, and temperature adopts K type thermocouple to control automatically.Chlorobenzene adopts 100 serial KDS120 type micro-injection pump injections of U.S. Stoelting company to enter vaporizer, is mixed into reactor with air respectively then and burns.Total flow adopts mass flowmenter control, and the concentration of chlorobenzene is controlled at 0.1vol%, and the amount that every gram catalyst is per hour handled waste gas is 15L, is 120m/h through the gas line speed of reactor.Reaction pressure is 0.1Mpa, and the conversion ratio of chlorobenzene and the relation of reaction temperature see Table 1, T in the table
10%, T
50%, T
90%Be respectively conversion ratio and reach 10%, 50%, 90% o'clock required reaction temperature.The key reaction product is the chlorine of carbon dioxide, hydrogen chloride and trace.
Chlorobenzene catalytic combustion properties on table 1 different catalysts
| Catalyst | ?T 10％(℃) | ?T 50％(℃) | ?T 90％(℃) |
| Embodiment 1 | ?＜180 | ?217 | ?262 |
| Embodiment 2 | ?＜180 | ?233 | ?270 |
| Embodiment 3 | ?＜180 | ?236 | ?278 |
| Embodiment 4 | ?205 | ?268 | ?310 |
| Embodiment 5 | ?256 | ?295 | ?374 |
Embodiment 7
Change the concentration of chlorobenzene, the amount that every gram catalyst is per hour handled waste gas is 30L, and reaction pressure is at 0.3～0.5Mpa, at embodiment 1 catalyst 3%VOx/TiO
2On investigated of the influence of variable concentrations chlorobenzene to catalytic combustion properties, the results are shown in Table 2.
Table 2 variable concentrations chlorobenzene is to 3%VOx/TiO
2The influence of catalyst combustibility
| Chlorobenzene concentration (volume %) | ?T 10％(℃) | ?T 50％(℃) | ?T 90％(℃) |
| ??0.05 | ?＜180 | ?231 | ?298 |
| ??0.1 | ?＜180 | ?261 | ?309 |
The result shows, embodiment 1 catalyst 3%VOx/TiO
2Chlorobenzene for low concentration has good catalytic combustion properties.Thus, the catalyst among the present invention can be widely used in the catalytic combustion elimination of variable concentrations (organic pollution that comprises low concentration and high concentration) chlorine-containing volatile arene.
Embodiment 8
Adopting the evaluating catalyst system identical with embodiment 6, is pollutant with the o-dichlorohenzene, the concentration of change o-dichlorohenzene, and the amount that every gram catalyst is per hour handled waste gas is 15L, reaction pressure is at 0.3～0.5Mpa, at embodiment 1 catalyst 3%VOx/TiO
2On investigated of the influence of variable concentrations o-dichlorohenzene to catalytic combustion properties, the results are shown in Table 3.
The different o-dichlorohenzene concentration of table 3 are to 3%VOx/TiO
2The influence of catalyst combustibility
| O-dichlorohenzene concentration (volume %) | ?T 10％(℃) | ?T 50％(℃) | ?T 90％(℃) |
| ?0.04 | ?＜180 | ?229 | ?241 |
| ?0.08 | ?＜180 | ?278 | ?288 |
The result shows, embodiment 1 catalyst 3%VOx/TiO
2O-dichlorohenzene for low concentration has good catalytic combustion properties.This shows that the catalyst among the present invention can be widely used in the catalytic combustion of the arene that the many chlorine of variable concentrations replace and eliminate.
Embodiment 9
All catalyst carrene combustion activities are estimated in fixed bed little anti-(internal diameter 6mm quartz) and are carried out, and catalyst consumption is 200mg, and temperature adopts K type thermocouple to control automatically.Carrene adopts 100 serial KDS120 type micro-injection pump injections of U.S. Stoelting company to enter vaporizer, is mixed into reactor with air respectively then and burns.Total flow adopts mass flowmenter control, and the concentration of carrene is controlled at 0.075vol%, and the amount that every gram catalyst is per hour handled waste gas is 10L, is 80m/h through the gas line speed of reactor.Reaction pressure is 0.1Mpa, and the conversion ratio of carrene and the relation of reaction temperature see Table 1, T in the table
10%, T
50%, T
90%Be respectively conversion ratio and reach 10%, 50%, 90% o'clock required reaction temperature.The key reaction product is the chlorine of carbon dioxide, hydrogen chloride and trace.
Carrene catalytic combustion properties on table 4 different catalysts
| Catalyst | ?T 10％(℃) | ?T 50％(℃) | ?T 90％(℃) |
| Embodiment 1 | ?147 | ?243 | ?297 |
| Embodiment 2 | ?＜140 | ?223 | ?310 |
| Embodiment 3 | ?168 | ?250 | ?305 |
| Embodiment 4 | ?168 | ?251 | ?305 |
Embodiment 10
Adopting the evaluating catalyst system identical with embodiment 9, is pollutant with the trichloro-ethylene, the concentration of change trichloro-ethylene, and the amount that every gram catalyst is per hour handled waste gas is 10L, reaction pressure is at 0.3～0.5Mpa, at embodiment 1 catalyst 3%VOx/TiO
2On investigated of the influence of variable concentrations trichloro-ethylene to catalytic combustion properties, the results are shown in Table 5.
The different trichloro-ethylene concentration of table 5 are to 3%VOx/TiO
2The influence of catalyst combustibility
| Trichloro-ethylene concentration (volume %) | ?T 10％(℃) | ?T 50％(℃) | ?T 90％(℃) |
| ?0.05 | ?157 | ?256 | ?332 |
| ?0.1 | ?193 | ?301 | ?367 |
The result shows, embodiment 1 catalyst 3%VOx/TiO
2Trichloro-ethylene for low concentration has good catalytic combustion properties.This shows that the catalyst among the present invention can be widely used in the catalytic combustion of the fat hydrocarbon of variable concentrations, different types of many chlorine replacements and eliminate.
Claims (4)
1. one kind is used for the method that chlorine-containing volatile organic compound by low-temperature catalytic combustion is eliminated, it is characterized in that, in the presence of catalyst, employing is brought reactor into as the air of oxidant, make chlorine-containing volatile organic compound completing combustion under the effect of catalyst, chlorine-containing volatile organic compound is transformed into carbon dioxide, hydrogen chloride and chlorine.Completing combustion tail gas can adopt dilute alkaline soln to absorb back emptying such as (hydrogen chloride/chlorine sour gas);
Reaction pressure is 0.1～1Mpa, preferred 0.1～0.5Mpa, especially 0.1Mpa, and near normal pressure, temperature is 100～400 ℃, is preferably 150～300 ℃, especially 250 ℃;
Catalyst consumption, must be enough to make chlorine-containing volatile organic compound existing under the situation at humid air, change into carbon dioxide and hydrogen chloride, generally speaking, the concentration of pollutant is 0.05～5vol% in the chlorine-containing volatile organic compound waste gas, and every gram catalyst treatment exhausted air quantity is 10～30L per hour;
Said catalyst mainly is made of titania oxide supported vanadium oxide, and wherein vanadium oxide content is 1～10% (weight), and all the other are titanium oxide.
2. according to the described Preparation of catalysts method of claim 1, it is characterized in that: the method for titania precursor body well known in the art hydrolysis is adopted in the preparation of carrier titanium oxide, and the titania precursor body can be butyl titanate Ti (OC
4H
9)
4, titanium tetrachloride TiCl
4
3. according to the described Preparation of catalysts method of claim 1, it is characterized in that: titania oxide supported vanadium oxide adopts dipping method well known in the art, and the presoma of vanadium oxide is selected from ammonium metavanadate NH
4VO
3
4. catalyst according to claim 1 can be widely used in the low-temperature catalytic burning of chlorine-containing volatile organic compound in industrial waste gas, refuse, the waste water and eliminate, especially the chloride arene pollutant of the effumability in the industrial waste gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010205402A CN101862593A (en) | 2010-06-22 | 2010-06-22 | Low-temperature catalytic combustion elimination method for chlorine-containing volatile organic compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010205402A CN101862593A (en) | 2010-06-22 | 2010-06-22 | Low-temperature catalytic combustion elimination method for chlorine-containing volatile organic compounds |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101862593A true CN101862593A (en) | 2010-10-20 |
Family
ID=42954633
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010205402A Pending CN101862593A (en) | 2010-06-22 | 2010-06-22 | Low-temperature catalytic combustion elimination method for chlorine-containing volatile organic compounds |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101862593A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353064A (en) * | 2011-06-28 | 2012-02-15 | 华东理工大学 | Method for eliminating chlorinated aromatic hydrocarbons through low temperature catalytic combustion |
| CN102921261A (en) * | 2012-11-13 | 2013-02-13 | 天津开发区合普工贸有限公司 | Gaseous nanometer material absorption device |
| CN109967085A (en) * | 2019-03-18 | 2019-07-05 | 华南理工大学 | A kind of fento composite molecular screen film catalyst and the preparation method and application thereof of catalysis burning volatile organic compounds containing chlorine |
| CN111203242A (en) * | 2020-03-13 | 2020-05-29 | 山东迅达化工集团有限公司 | Catalytic combustion treatment catalyst for organic chlorine-containing gas flow and preparation method and application thereof |
-
2010
- 2010-06-22 CN CN201010205402A patent/CN101862593A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102353064A (en) * | 2011-06-28 | 2012-02-15 | 华东理工大学 | Method for eliminating chlorinated aromatic hydrocarbons through low temperature catalytic combustion |
| CN102921261A (en) * | 2012-11-13 | 2013-02-13 | 天津开发区合普工贸有限公司 | Gaseous nanometer material absorption device |
| CN109967085A (en) * | 2019-03-18 | 2019-07-05 | 华南理工大学 | A kind of fento composite molecular screen film catalyst and the preparation method and application thereof of catalysis burning volatile organic compounds containing chlorine |
| CN111203242A (en) * | 2020-03-13 | 2020-05-29 | 山东迅达化工集团有限公司 | Catalytic combustion treatment catalyst for organic chlorine-containing gas flow and preparation method and application thereof |
| CN111203242B (en) * | 2020-03-13 | 2022-05-24 | 山东迅达化工集团有限公司 | Catalytic combustion treatment catalyst for gas flow containing organic chlorine and preparation method and application thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109126773B (en) | Catalyst for purifying waste incineration flue gas and preparation method thereof | |
| Lin et al. | Comparative investigation on chlorobenzene oxidation by oxygen and ozone over a MnO x/Al2O3 catalyst in the presence of SO2 | |
| CN101199885A (en) | Method for easy volatility Cl generation aromatic low temperature catalyst burning eliminable | |
| CN101069848A (en) | Catalyst for low-temperature catalytic combustion removal of easy-to-volatile chloroarene | |
| CN101185796A (en) | Chlorination aromatic hydrocarbon waste gases catalytic purification method | |
| CN102698751A (en) | Catalyst for eliminating chlorine-containing volatile organic compounds by low-temperature catalytic combustion | |
| CN101245916A (en) | Method for eliminating chloro-aromatics low temperature catalytic combustion | |
| CN107008459B (en) | A kind of catalyst and its preparation method and application for chlorinated organics low-temperature catalytic burning | |
| CN101767011A (en) | Low-temperature catalytic combustion eliminating method of volatile chloro aryl hydrocarbons | |
| CN113786828B (en) | Catalyst for synergistic removal of NOx and CVOCs, and preparation method and application thereof | |
| CN101347723A (en) | Catalyst for eliminating chlorinated aromatic hydrocarbons by low-temperature catalytic combustion | |
| CN109603869B (en) | Phosphoric acid modified cerium oxide catalyst and preparation method and application thereof | |
| CN106622227A (en) | Preparation method of monoatomic catalyst for indoor air purification | |
| CN108786788B (en) | Method for removing dioxin and NO in flue gasxCatalyst, preparation method and application | |
| CN106994348A (en) | It is a kind of for catalyst of chlorination aromatic hydrocarbon low-temperature catalytic burning and its preparation method and application | |
| CN101862593A (en) | Low-temperature catalytic combustion elimination method for chlorine-containing volatile organic compounds | |
| CN107126949B (en) | A kind of SCR denitration and preparation method thereof of anti-arsenic poisoning | |
| CN107051424A (en) | It is a kind of for catalyst of chlorinated hydrocarbon low-temperature catalytic burning and its preparation method and application | |
| CN111001297A (en) | Process and device for degrading chlorine-containing volatile organic compounds in two stages of hydrolysis and oxidation | |
| CN101279253A (en) | Catalyst for eliminating chlorinated aromatic hydrocarbons by low-temperature catalytic combustion | |
| CN102353064A (en) | Method for eliminating chlorinated aromatic hydrocarbons through low temperature catalytic combustion | |
| CN101929682A (en) | Method for eliminating chlorine-containing volatile organic compound by low-temperature catalytic combustion | |
| CN208512235U (en) | A kind of combined type organic waste-gas purification equipment | |
| CN108014819B (en) | Preparation method and application of titanium dioxide photocatalyst | |
| CN103962134A (en) | Method for eliminating chloro aromatic hydrocarbon through low-temperature catalytic combustion |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20101020 |