JPS55145532A - Treatment of used catalyst - Google Patents
Treatment of used catalystInfo
- Publication number
- JPS55145532A JPS55145532A JP5237979A JP5237979A JPS55145532A JP S55145532 A JPS55145532 A JP S55145532A JP 5237979 A JP5237979 A JP 5237979A JP 5237979 A JP5237979 A JP 5237979A JP S55145532 A JPS55145532 A JP S55145532A
- Authority
- JP
- Japan
- Prior art keywords
- heating
- catalyst
- regenerate
- tio
- neutralized
- 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.)
- Granted
Links
- 239000003054 catalyst Substances 0.000 title abstract 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 abstract 3
- 238000010438 heat treatment Methods 0.000 abstract 3
- 239000002253 acid Substances 0.000 abstract 2
- 239000003513 alkali Substances 0.000 abstract 2
- 239000002585 base Substances 0.000 abstract 2
- 238000001035 drying Methods 0.000 abstract 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 2
- 239000011707 mineral Substances 0.000 abstract 2
- 239000011949 solid catalyst Substances 0.000 abstract 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 230000007062 hydrolysis Effects 0.000 abstract 1
- 238000006460 hydrolysis reaction Methods 0.000 abstract 1
- 230000003301 hydrolyzing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
Landscapes
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
PURPOSE: To highly activate and regenerate the catalytic ability, by carrying out alkali neutralization or heating hydrolysis of dissolving solution after dissolving a part (all) of TiO2 base solid catalyst used for dry process reduction denitration treatment by using mineral acid.
CONSTITUTION: TiO2 base solid catalyst used for dry process reduction denitration treatment, is crushed to about 200 mesh and a part (all) of it is dissolved by using mineral acid, such as H2SO4 or HCl etc. Next, the above dissolving solution is neutralized by NaOH etc. or is hydrolyzed by heating or is neutralized by alkali after hydrolyzing by heating. By the above method, used catalyst is able to regenerate equal to a new catalyst before use and also, regenerated catalyst has an excellent denitration capacity in a low temperature range especially.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54052379A JPS5829143B2 (en) | 1979-04-27 | 1979-04-27 | A new method for producing a denitrification catalyst that reuses waste catalyst as a raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP54052379A JPS5829143B2 (en) | 1979-04-27 | 1979-04-27 | A new method for producing a denitrification catalyst that reuses waste catalyst as a raw material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55145532A true JPS55145532A (en) | 1980-11-13 |
| JPS5829143B2 JPS5829143B2 (en) | 1983-06-21 |
Family
ID=12913160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP54052379A Expired JPS5829143B2 (en) | 1979-04-27 | 1979-04-27 | A new method for producing a denitrification catalyst that reuses waste catalyst as a raw material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5829143B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088216A (en) * | 2013-02-25 | 2013-05-08 | 河南佰利联化学股份有限公司 | Recovery method of out-of-service titanium tungsten and vanadium powders for denitration of fume |
| JP2015192999A (en) * | 2014-03-28 | 2015-11-05 | 日揮触媒化成株式会社 | Method for producing exhaust gas treatment catalyst using used catalyst and exhaust gas treatment catalyst |
| KR20170129200A (en) | 2015-04-17 | 2017-11-24 | 미츠비시 히타치 파워 시스템즈 가부시키가이샤 | Method of regenerating used denitration catalyst |
-
1979
- 1979-04-27 JP JP54052379A patent/JPS5829143B2/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103088216A (en) * | 2013-02-25 | 2013-05-08 | 河南佰利联化学股份有限公司 | Recovery method of out-of-service titanium tungsten and vanadium powders for denitration of fume |
| CN103088216B (en) * | 2013-02-25 | 2014-10-29 | 河南佰利联化学股份有限公司 | Recovery method of out-of-service titanium tungsten and vanadium powders for denitration of fume |
| JP2015192999A (en) * | 2014-03-28 | 2015-11-05 | 日揮触媒化成株式会社 | Method for producing exhaust gas treatment catalyst using used catalyst and exhaust gas treatment catalyst |
| KR20170129200A (en) | 2015-04-17 | 2017-11-24 | 미츠비시 히타치 파워 시스템즈 가부시키가이샤 | Method of regenerating used denitration catalyst |
| US10549264B2 (en) | 2015-04-17 | 2020-02-04 | Mitsubishi Hitachi Power Systems, Ltd. | Method of regenerating used denitration catalyst |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5829143B2 (en) | 1983-06-21 |
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