CN1358569A - Cesium containing mercury sulfate catalyst and preparation process - Google Patents
Cesium containing mercury sulfate catalyst and preparation process Download PDFInfo
- Publication number
- CN1358569A CN1358569A CN 00126744 CN00126744A CN1358569A CN 1358569 A CN1358569 A CN 1358569A CN 00126744 CN00126744 CN 00126744 CN 00126744 A CN00126744 A CN 00126744A CN 1358569 A CN1358569 A CN 1358569A
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- CN
- China
- Prior art keywords
- cesium
- product
- containing mercury
- mother liquor
- mercury sulfate
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Abstract
The present invention belongs to a vanadium catalyst for oxidizing SO2 into SO3 in the production of sulfuric acid. By adding cesium adjuvant in the vanadium catalyst it can raise low-temp. activity of product, increase granule radial compression strength, reduce reaction temp., raise SO2 conversion rate and reduce SO2 discharge in the tail gas, so that it is favourable for environmental protection.
Description
The invention belongs in gas washing in SA production SO
2Be oxidized to SO
3Vanadium catalyst, particularly a kind of cesium containing mercury sulfate catalyst and preparation method thereof.
At present, the vanadium catalyst for manufacture of sulfuric acid of domestic production generally comprises following processing step, and is 1. that diatomite is refining, makes SiO in the diatomite
2Content reaches more than 83%; 2. with V
2O
5Handle by KOH, make it to become KVO
3Solution; 3. at KVO
3Add H in the solution
2SO
4Form the jelly after neutralizing; 4. pour terra silicea purificata, jelly, glauber salt and sulphur metering into roller and carry out abundant mixed grind; 5. after the material after the mixed grind being passed through the banded extruder moulding, oven dry, calcination form product.This product activity is low, and mechanical strength is not high, and abrasion are big, the desired reaction temperature height.
The purpose of this invention is to provide a kind of cesium containing mercury sulfate catalyst, improve product low temperature active and particle radial crushing strength, reduce reaction temperature, improve conversion ratio, reduce SO in the tail gas
2The emptying amount.
Another object of the present invention provides a kind of preparation method of cesium containing mercury sulfate catalyst.
A kind of cesium containing mercury sulfate catalyst of the present invention has added cesium salt in the product batching, product charge ratio (weight ratio) is V
2O
5: cesium salt: KOH: mother liquor: glauber salt: phosphoric acid: diatomite is (with SiO
2Meter): Cosan=4-8: 4-9: 16-20: 2-4: 0.14-0.16: 1.1-1.3: 63-67: 4-5 wherein mother liquor consists of KOH: NaOH: RbOH: CsOH=200-250: 50-80: 35-55: 10-20 (g/l of unit) wherein cesium salt can be CsI, Cs
2SO
4, Cs
2CO
3And CsNO
3Deng.
The preparation method of cesium containing mercury sulfate catalyst of the present invention is characterized in that cesium salt is added in the mother liquor, and is heated to 90-100 ℃ it is fully dissolved, with above-mentioned solution and H
2SO
4Respectively but slowly join simultaneously KVO
3In the solution, make it abundant reaction, pH value is controlled at 2-3, after question response is complete, adds phosphoric acid solution, makes its jelly dilution, forms product through mixing, moulding, drying and calcining again.
Cesium containing mercury sulfate catalyst performance according to batching proposed by the invention and preparation method's preparation is: product activity (active 410 ℃ of heat-resisting backs) 〉=45.0%, material radial crushing strength 〉=80N/cm, rate of wear≤8%, V in the product
2O
5〉=5.0%, Cs
2O 〉=4.5%.This product can reduce reaction temperature, and its serviceability temperature is 360-620 ℃, to SO
2Gas (SO
2Concentration 3-12%) total conversion can reach 99.5-99.8%, the SO after the conversion
2Emptying amount 100-300PPM reduces serviceability temperature, energy savings, uses wide temperature range, and the space of temperature raising is arranged in use for some time, increases the service life, and improves sulphuric acid output, reduces cost, and reduces environmental pollution.
Embodiment 1:
Product charge ratio (weight ratio) is got V
2O
5: CsNO
3: KOH: mother liquor: glauber salt: phosphoric acid: diatomite is (with SiO
2Meter): Cosan=6: 7: 18: 3: 0.15: 1.1: 65: 4, mother liquor consisted of KOH: NaOH: RbOH: CsOH=220: (g/l of unit) was with CsNO in 65: 40: 15
3Join in the mother liquor, and be heated to 95 the degree about it is fully dissolved, with above-mentioned solution and H
2SO
4Respectively but slowly join simultaneously KVO
3In the solution, make it abundant reaction, pH value is controlled at 2-3, after question response is complete, adds phosphoric acid solution, makes its jelly dilution, forms product through mixing, moulding, drying and calcining again.Obtained product has following performance:
Active (410 ℃ of conditions) 45.8%, intensity 106N/cm, rate of wear 2.7%, V in the product
2O
5Content 6.1%, Cs
2O content 4.8%
Testing conditions: loaded catalyst 30ml
Air speed 36Oh
-1
SO
2Concentration 10 ± 0.1%
600 ℃ of heat resisting temperatures
Heat-resistant time 5 hours
410 ℃ of detected temperatures
Embodiment 2: product charge ratio (weight ratio) is got V
2O
5: Cs
2SO
4: KOH: mother liquor: glauber salt: phosphoric acid: diatomite is (with SiO
2Meter): Cosan=6: 6.5: 18: 3: 0.15: 1.1: 65: 4
Mother liquor is formed with example 1.
Technical process is with example 1.
Testing conditions: with example 1.
Products obtained therefrom has following performance: active (410 ℃ of conditions) 50.6%, intensity 88N/cm, rate of wear 3.3%, V
2O
5: 6.2%, Cs
2O content: 4.9%.
Claims (2)
1, a kind of cesium containing mercury sulfate catalyst is characterized in that having added cesium salt in the product batching, and product charge ratio (weight ratio) is V
2O
5: cesium salt: KOH: mother liquor: glauber salt: phosphoric acid: diatomite is (with SiO
2Meter): Cosan=4-8: 4-9: 16-20: 2-4: 0.14-0.16: 1.1-1.3: 63-67: 4-5 wherein mother liquor consists of KOH: NaOH: RbOH: CsOH=200-250: 50-80: 35-55: 10-20 (g/l of unit) wherein cesium salt can be CsI, Cs
2SO
4, Cs
2CO
3And CsNO
3Deng.
2, a kind of preparation method of cesium containing mercury sulfate catalyst is characterized in that cesium salt is added in the mother liquor, and is heated to 90-100 ℃ it is fully dissolved, with above-mentioned solution and H
2SO
4Respectively but slowly join simultaneously KVO
3In the solution, make it abundant reaction, pH value is controlled at 2-3, after question response is complete, adds phosphoric acid solution, makes its jelly dilution, forms product through mixing, moulding, drying and calcining again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00126744 CN1358569A (en) | 2000-12-15 | 2000-12-15 | Cesium containing mercury sulfate catalyst and preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00126744 CN1358569A (en) | 2000-12-15 | 2000-12-15 | Cesium containing mercury sulfate catalyst and preparation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1358569A true CN1358569A (en) | 2002-07-17 |
Family
ID=4592038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00126744 Pending CN1358569A (en) | 2000-12-15 | 2000-12-15 | Cesium containing mercury sulfate catalyst and preparation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1358569A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041131B (en) * | 2006-03-20 | 2010-09-08 | 襄樊市精信催化剂有限责任公司 | Wide temperature type sulfur dioxide oxidation system producing aulfuric acid and the preparing method |
| CN101462048B (en) * | 2008-06-21 | 2011-08-24 | 康喆 | Vanadium catalyst containing tungsten for producing acid by oxidation and preparation method thereof |
| CN103230792A (en) * | 2013-05-03 | 2013-08-07 | 宜春银锂新能源有限责任公司 | Rubidium and vanadium catalyst for producing sulfuric acid and preparation method thereof |
| CN103240075A (en) * | 2013-05-06 | 2013-08-14 | 宜春银锂新能源有限责任公司 | Rubidium-cesium-vanadium catalyst for producing sulfuric acid at low temperature, 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 |
-
2000
- 2000-12-15 CN CN 00126744 patent/CN1358569A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101041131B (en) * | 2006-03-20 | 2010-09-08 | 襄樊市精信催化剂有限责任公司 | Wide temperature type sulfur dioxide oxidation system producing aulfuric acid and the preparing method |
| CN101462048B (en) * | 2008-06-21 | 2011-08-24 | 康喆 | Vanadium catalyst containing tungsten for producing acid by oxidation and preparation method thereof |
| CN103230792A (en) * | 2013-05-03 | 2013-08-07 | 宜春银锂新能源有限责任公司 | Rubidium and vanadium catalyst for producing sulfuric acid and preparation method thereof |
| CN103230792B (en) * | 2013-05-03 | 2016-07-06 | 宜春银锂新能源有限责任公司 | Produce rubidium vanadium catalyst of sulphuric acid and preparation method thereof |
| CN103240075A (en) * | 2013-05-06 | 2013-08-14 | 宜春银锂新能源有限责任公司 | Rubidium-cesium-vanadium catalyst for producing sulfuric acid at low temperature, 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 |
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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 |