CN1417111A - New Vanadium catalyst for low-temperature sulfuric acid production and its prepn - Google Patents
New Vanadium catalyst for low-temperature sulfuric acid production and its prepn Download PDFInfo
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- CN1417111A CN1417111A CN 02148503 CN02148503A CN1417111A CN 1417111 A CN1417111 A CN 1417111A CN 02148503 CN02148503 CN 02148503 CN 02148503 A CN02148503 A CN 02148503A CN 1417111 A CN1417111 A CN 1417111A
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- China
- Prior art keywords
- sulfuric acid
- vanadium catalyst
- catalyst
- diatomite
- low temperature
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Abstract
The present invention relates to a new vanadium catalyst for low-temperature sulfuric acid production and its preparation process, and belongs to the field of catalyst preparing technology. By improving the formula of catalyst and using new mineral source diatomite as catalyst carrier, vanadium catalyst for sulfuric acid production is prepared. The catalyst has high activity and is suitable for all parts of converter in sulfuric acid production.
Description
Technical field: the invention belongs to catalysis technical field, be specifically related to a kind of new type low temperature type vanadium catalyst for manufacture of sulfuric acid and preparation method thereof.
Technical background: vanadium catalyst is used for sulfuric acid production plant with SO
2Oxidation conversion is SO
3The tradition vanadium catalyst is vanadium-potassium (sodium)-silicon system, is active ingredient with the Vanadium Pentoxide in FLAKES, and vitriolate of tartar, sodium sulfate are auxiliary agent, and Shandong diatomite, northeast diatomite or both mixing are as carrier.Two kinds of middle warm type and low temperature modifications are arranged, and middle temperature type vanadium catalyst service temperature general requirement is higher than 420 ℃, is no more than 600 ℃, and it is active to have middle preferably temperature; Low-temperature type vanadium catalyst service temperature general requirement is higher than 410 ℃, has better low temperature activity, helps improving SO in the sulfuric acid conversion device
2Be converted into SO
3Total conversion rate.In the sulfuric acid production plant of double conversion and double absorption flow process combination loading traditional in, low-temperature type vanadium catalyst, can make SO
2Final transformation efficiency reaches 99.5%.
Because the diatomaceous restriction exploitation in Shandong and diatomite is dealt with improperly, the diatomaceous grant in northeast is bought out by offshore company, supply with vanadium catalyst and make the diatomaceous quality that carrier uses and descend significantly, influenced the quality of existing vanadium catalyst.
The existing manufacture method of vanadium catalyst:
KOH is dissolved with steam, and and V
2O
5Under boiling condition, heat makes satisfactory KVO
3With KOH mixing solutions (being called for short vanadium water), then vanadium water is made V with the sulfuric acid neutralization
2O
5And K
2SO
4The colloidal precipitation thing.To mix in the adding rollers such as colloidal precipitation thing and auxiliary agent, terra silicea purificata to scale then, roll closely, become the plasticity-material, again through extrusion, drying, roasting, sieve and operation such as packing is made vanadium catalyst.
Summary of the invention: the objective of the invention is to propose one one kinds of new type low temperature type vanadium catalyst for manufacture of sulfuric acid products, this catalyzer has higher activity and thermostability than traditional vanadium catalyst, can satisfy gas washing in SA production to SO
2The needs of total conversion rate.
The vanadium catalyst that the present invention produces has better catalytic performance than traditional vanadium catalyst, and this catalyzer can substitute traditional vanadium catalyst and be used for gas washing in SA production.
The present invention is achieved like this, and is carrier with Yunnan diatomite, adds auxiliary agent in traditional vanadium-potassium (sodium)-silicon system, makes it have higher activity and thermostability.It mainly comprises following content: mix in activity and the adding rollers such as alkali metal sulfates, auxiliary agent, terra silicea purificata by catalyst formulation, roll closely, become the plasticity-material, again through extrusion, drying, roasting, sieve and operation such as packing is made vanadium catalyst.The low-temperature type vanadium catalyst prescription is V
2O
5～7.0% 6.0 (weight) K
2O/V
2O
52.5 all the other are diatomite for the mixture 0.5～2.0% (weight) of one or both in～3.0 (mol ratio) alkali metal sulfates 11.0～14.0% (weight) phosphoric acid and the acid aluminum phosphate.
The used auxiliary agent of the present invention is a kind of in phosphoric acid, the acid aluminum phosphate, also can be two kinds mixture; Diatomite is Yunnan Xun Dian diatomite.
The vanadium catalyst of the present invention preparation is applicable to any part of the convertor of sulfuric acid production plant.
Embodiment: further specify content of the present invention below in conjunction with embodiment:
Embodiment 1
Sample prescription V
2O
56.5%, K
2O/V
2O
5(2.7 mol ratio), Na
2SO
4All the other are the long white diatomite in Linqu, Shandong diatomite and northeast for 13.7% phosphatase 11 %; Adopt traditional processing technology.KOH is dissolved with steam, and and V
2O
5Under boiling condition, heat makes K
2O/V
2O
5Be 2.7 KVO
3With KOH mixing solutions (being called for short vanadium water), the V of the vanadium water of preparation
2O
5Concentration is 242g/L, K
2O/V
2O
5Be 2.7.Then with the vanadium water 10.9ml1 of 26.9ml: 1 sulfuric acid neutralization makes V
2O
5And K
2SO
4The colloidal precipitation thing is with colloidal precipitation thing and 13.7 gNa
2SO
4, mix in the adding roller such as the long white diatomite of 1ml phosphoric acid, 36.0g Shandong Linqu terra silicea purificata and 34.3g northeast, add water-powered roller and compress closely, become the plasticity-material, again through extrusion, drying, roasting, etc. operation make the 100g vanadium catalyst.
Embodiment 2
Sample prescription V
2O
56.5%, K
2O/V
2O
5(2.7 mol ratio), Na
2SO
4All the other are the long white diatomite in Linqu, Shandong diatomite and northeast for 12.7% phosphatase 11 %; KOH is dissolved with steam, and and V
2O
5Under boiling condition, heat makes K
2O/V
2O
5Be 2.7 KVO
3With KOH mixing solutions (being called for short vanadium water), the V of the vanadium water of preparation
2O
5Concentration is 242g/L, K
2O/V
2O
5Be 2.7.Then with the vanadium water 10.9ml1 of 26.9ml: 1 sulfuric acid neutralization makes V
2O
5And K
2SO
4The colloidal precipitation thing is with colloidal precipitation thing and 12.7gNa
2SO
4, mix in the adding roller such as 1g aluminium dihydrogen phosphate, 1ml phosphoric acid, 66.4g Yunnan Xun Dian terra silicea purificata, add water-powered roller and compress closely, become the plasticity-material, again through extrusion, drying, roasting, etc. operation make the 100g vanadium catalyst.
Sample test
Catalyst sample: granularity is φ 9 * 3.5 * 10～15mm.The active testing condition:
Convertor: adopt the jacketed type single tube reactor, its caliber is φ 36 * 2mm, thermometric heat
The galvanic couple sleeve pipe is positioned at the center of convertor, and its caliber is φ 8 * 1.5mm;
Catalyzer loading amount: 30ml;
Catalyst grain size: 3.35～4.0mm;
Space velocity: 3600h;
Air inlet SO
2Percent by volume: be air surplus in the of 10 ± 1%;
System pressure: normal pressure;
Active detected temperatures: 485 ℃ (middle warm type), 410 ℃ (low temperature modification);
Heat resisting temperature and time: 700 ℃ of 5h (middle warm type), 600 ℃ of 5h (low temperature modification);
With SO
2Transformation efficiency represent active height.
Active testing the results are shown in table one, and wherein sample 1 is traditional middle temperature type vanadium catalyst, and 3 is traditional low-temperature type vanadium catalyst, and sample 2 is new middle temperature type vanadium catalyst, and 4 is new low-temperature type vanadium catalyst.
Table one active testing result
| The sample example | Active (heat-resisting back SO 2Transformation efficiency) % | Relative value |
| ??1 | ??57.6 | ????1 |
| ??2 | ??64.5 | ????1.12 |
Can find out that by test result the activity of the vanadium catalyst of employing the inventive method preparation shows that apparently higher than traditional vanadium catalyst the performance of the vanadium catalyst that the present invention prepares is significantly improved, and can satisfy gas washing in SA production to SO
2The needs of total conversion rate.
Claims (4)
1. new type low temperature type vanadium catalyst for manufacture of sulfuric acid and preparation method thereof, the prescription that it is characterized in that it is V
2O
5～7.0% 6.0 (weight) K
2O/V
2O
52.5 all the other are diatomite for～3.0 (mol ratio) alkali metal sulfates 11.0～14.0% (weight) auxiliary agent 0.5～2.0% (weight).
2. the preparation method of a new type low temperature type vanadium catalyst for manufacture of sulfuric acid, it is characterized in that mixing in activity and the adding rollers such as alkali metal sulfates, auxiliary agent, terra silicea purificata by catalyst formulation, roll closely, become the plasticity-material, again through extrusion, drying, roasting, sieve and operation such as packing is made product.
3. new type low temperature type vanadium catalyst for manufacture of sulfuric acid as claimed in claim 1 is characterized in that auxiliary agent is one or both the mixture in phosphoric acid, the acid aluminum phosphate.
4. a new type low temperature type vanadium catalyst for manufacture of sulfuric acid as claimed in claim 1 is characterized in that diatomite is Yunnan Xun Dian diatomite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021485038A CN1299973C (en) | 2002-12-11 | 2002-12-11 | New Vanadium catalyst for low-temperature sulfuric acid production and its prepn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021485038A CN1299973C (en) | 2002-12-11 | 2002-12-11 | New Vanadium catalyst for low-temperature sulfuric acid production and its prepn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1417111A true CN1417111A (en) | 2003-05-14 |
| CN1299973C CN1299973C (en) | 2007-02-14 |
Family
ID=4751457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021485038A Expired - Fee Related CN1299973C (en) | 2002-12-11 | 2002-12-11 | New Vanadium catalyst for low-temperature sulfuric acid production and its prepn |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1299973C (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506143A (en) * | 2012-06-21 | 2014-01-15 | 中国石油化工股份有限公司 | Low-temperature type vanadium catalyst for preparation of sulfuric acid by wet conversion |
| CN105080309A (en) * | 2014-05-23 | 2015-11-25 | 国网山西省电力公司电力科学研究院 | Purifying treatment method for sulfur hexafluoride detection tail gas, and apparatus thereof |
| CN105126861A (en) * | 2015-09-07 | 2015-12-09 | 吉林省天元硅藻科技有限公司 | Sulfuric acid catalyst prepared through middle and low temperature hydrogen sulfide wetting method and preparation method therefor |
| CN106311299A (en) * | 2015-06-19 | 2017-01-11 | 中国石油化工股份有限公司 | Vanadium catalyst used for producing sulfuric acid by high-density reforming gas and preparation method thereof |
| CN108349735A (en) * | 2015-11-06 | 2018-07-31 | 托普索公司 | Method and apparatus design for the startup discharge for reducing gas washing in SA production sulphur oxide |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85107473B (en) * | 1985-10-05 | 1988-03-30 | 广西化工研究所 | Vanadium catalyst for sulphuric-acid prodn |
| CN1144189A (en) * | 1996-03-15 | 1997-03-05 | 四川川化集团公司催化剂厂 | Catalyst containing vanadium for producing sulfuric acid and preparation method thereof |
| UA70330C2 (en) * | 1999-11-09 | 2004-10-15 | Любовь Манаєва | METHOD FOR production of catalyzers for converting SO2 into SO3 using worked-out vanadium catalyzers |
| CN1159210C (en) * | 2001-10-30 | 2004-07-28 | 南化集团研究院 | Process for preparing V catalyst used to prepare low-temp sulfuric acid |
-
2002
- 2002-12-11 CN CNB021485038A patent/CN1299973C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103506143A (en) * | 2012-06-21 | 2014-01-15 | 中国石油化工股份有限公司 | Low-temperature type vanadium catalyst for preparation of sulfuric acid by wet conversion |
| CN105080309A (en) * | 2014-05-23 | 2015-11-25 | 国网山西省电力公司电力科学研究院 | Purifying treatment method for sulfur hexafluoride detection tail gas, and apparatus thereof |
| CN106311299A (en) * | 2015-06-19 | 2017-01-11 | 中国石油化工股份有限公司 | Vanadium catalyst used for producing sulfuric acid by high-density reforming gas and preparation method thereof |
| CN105126861A (en) * | 2015-09-07 | 2015-12-09 | 吉林省天元硅藻科技有限公司 | Sulfuric acid catalyst prepared through middle and low temperature hydrogen sulfide wetting method and preparation method therefor |
| CN108349735A (en) * | 2015-11-06 | 2018-07-31 | 托普索公司 | Method and apparatus design for the startup discharge for reducing gas washing in SA production sulphur oxide |
| CN108349735B (en) * | 2015-11-06 | 2021-07-30 | 托普索公司 | Method and apparatus design for reducing start-up emissions of sulfur oxides in sulfuric acid production |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1299973C (en) | 2007-02-14 |
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Granted publication date: 20070214 Termination date: 20111211 |