CN103111275A - Catalyst for producing calcium oxide from calcium sulfate and preparation process thereof - Google Patents
Catalyst for producing calcium oxide from calcium sulfate and preparation process thereof Download PDFInfo
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- CN103111275A CN103111275A CN201310035595XA CN201310035595A CN103111275A CN 103111275 A CN103111275 A CN 103111275A CN 201310035595X A CN201310035595X A CN 201310035595XA CN 201310035595 A CN201310035595 A CN 201310035595A CN 103111275 A CN103111275 A CN 103111275A
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- calcium oxide
- catalyst
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- oxide
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Abstract
The invention relates to a catalyst for producing calcium oxide from calcium sulfate and a preparation process thereof. The catalyst is prepared from the following raw materials in parts by weight: 50-60 parts of aluminum oxide, 10-20 parts of silicon dioxide, 10-20 parts of activated carbon and 10-20 parts of adhesive calcium oxide. The invention also comprises the preparation process of the catalyst for producing calcium oxide from calcium sulfate. The catalyst prepared by the invention is high in activity; and when calcium oxide is produced from calcium sulfate under the catalytic action of the catalyst, the reaction speed can be accelerated, and the activated carbon also can adsorb harmful gas to reduce the discharge thereof.
Description
Technical field
The present invention relates to a kind of catalyst and preparation technology thereof, especially relate to effective catalyst and preparation technology thereof that a kind of calcium sulfate is produced calcium oxide.
Background technology
At present, the production of calcium oxide is mainly to produce under the reduction heating condition by calcium sulfate, its processing temperature is more than 1000 ℃, can produce a large amount of CO gas in this process, enterprise need to process or use this part CO gas, and the production cost that these have all improved calcium sulfate production calcium oxide has greatly also restricted simultaneously the development of calcium oxide production industry, how by adding catalyst to improve the productivity ratio of calcium oxide and reducing the cost of catalyst, become the focus that industry development is paid close attention to.But the catalytic efficiency of existing catalyst is low, and cost is high.
Summary of the invention
The technical problem to be solved in the present invention is, overcomes the deficiencies in the prior art, and a kind of activity catalyst and preparation technology thereof that high calcium sulfate is produced calcium oxide are provided.Utilize this catalyst, can improve the efficient that calcium sulfate is produced calcium oxide, improve productivity effect.
The technical solution adopted for the present invention to solve the technical problems is:
The present invention's calcium sulfate is produced the catalyst of calcium oxide, is made by the raw material of following parts by weight: aluminium oxide 50-60 part, silica 1 0-20 part, active carbon 10-20 part, calcium oxide 10-20 part.
Preferred parts by weight are: aluminium oxide 52-58 part, silica 1 2-18 part, active carbon 12-18 part, calcium oxide 12-18 part.
Preferred parts by weight are: 55 parts, aluminium oxide, 5 parts of silica 1s, 15 parts of active carbons, 15 parts, calcium oxide.
Described alundum (Al2O3) (Al
2O
3) preferred γ-Al
2O
3
Described silica (SiO
2) preferred nano silicon;
The preferred mineral raw material active carbon of described active carbon, aperture 〉=20000nm.
The present invention's calcium sulfate is produced the preparation technology of the catalyst of calcium oxide, comprises the following steps:
with aluminium oxide 50-60 part, silica 1 0-20 part, active carbon 10-20 part, calcium oxide 10-20 part adds in high mixer, mix the preferred 10min of 5-15min(), but then the mixture in high mixer is added in the rotating disk of inclination of adjusting rotary speed, the rotating speed of rotating disk is the preferred 75r/min of 70-80r/min(), gradient is 25-35 degree (preferred 30 degree), spray into simultaneously water, the amount of spraying water is equivalent to aluminium oxide, silica, active carbon, the 0.05-0.15 of each material gross weight of calcium oxide is (preferred 0.1 times) doubly, at the preferred 20min of dial rotation 15-25min() process in, powder rolls and bonds, form the suitable spheroid of uniform size of size, then the preferred 1.5h of dry 1-2h(at 100-140 ℃ of (preferred 120 ℃) temperature), again at 600-700 ℃ (preferred 650 ℃) the lower preferred 1.5h of roasting 1-2h(), and get final product.
According to Chinese invention patent application 200810058186.0, calcium sulfate decomposes the generation calcium oxide, and its reaction principle is as follows:
CaSO
4+2C=CaS+2CO
2↑
CaSO
4+4CO=CaS+4CO
2↑
CaSO
4+4H
2=CaS+4H
2O
CaS+2O
2=CaSO
4
2CaS+3O
2=2CaO+2SO
2
CaS+3CaSO
4=4CaO+4SO
2↑
The catalyst application principle that the present invention makes: alundum (Al2O3) is transition metal oxide, at high temperature easily form the hole between the metallic atom in molecular structure and oxygen atom, change oxygen adsorption ability in calcium sulfate, the carrying out of accelerating oxidation reduction reaction, silica is very effective to stablizing the alundum (Al2O3) structure, can effectively suppress Al
2O
3α become, keep Al
2O
3Activity; Active carbon has strong adsorption capacity in addition, and adsorption reaction produces and do not absorb the S0 that is converted into sulfuric acid
2, reduce the discharging of pernicious gas; Calcium oxide adds as adhesive.
The catalyst that the present invention makes, active high, utilize its catalysis calcium sulfate to produce calcium oxide, the energy fast reaction speed, active carbon can also adsorb the discharging that reduces pernicious gas.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail.
Embodiment 1
The calcium sulfate of the present embodiment is produced the catalyst of calcium oxide, is made by the raw material of following parts by weight: 50 parts, aluminium oxide, 20 parts of silica, 15 parts of active carbons, 15 parts, calcium oxide.
Described alundum (Al2O3) (Al
2O
3) be γ-Al
2O
3
Described silica (SiO
2) be nano silicon;
Described active carbon is the mineral raw material active carbon, aperture 〉=20000nm.
The calcium sulfate of the present embodiment is produced the preparation technology of the catalyst of calcium oxide, comprises the following steps:
with 50 parts, aluminium oxide, 20 parts of silica, 15 parts of active carbons, 15 parts, calcium oxide adds in high mixer, mix 10min, but then the mixture in high mixer is added in the rotating disk of inclination of adjusting rotary speed, the rotating speed of rotating disk is 80r/min, gradient is 30 degree, spray into simultaneously water, the amount of spraying water is equivalent to aluminium oxide, silica, active carbon, 1/10 of each material gross weight of calcium oxide, in the process of dial rotation 20min, powder rolls and bonds, form the suitable spheroid of uniform size of size, then after dry 1.5h at 120 ℃ of temperature at 650 ℃ of lower roasting 1.5h, and get final product.
Embodiment 2
The calcium sulfate of the present embodiment is produced the catalyst of calcium oxide, is made by the raw material of following parts by weight: 55 parts, aluminium oxide, 5 parts of silica 1s, 15 parts of active carbons, 15 parts, calcium oxide.
Described alundum (Al2O3) (Al
2O
3) be γ-Al
2O
3
Described silica (SiO
2) be nano silicon;
Described active carbon is the mineral raw material active carbon, aperture 〉=20000nm.
The calcium sulfate of the present embodiment is produced the preparation technology of the catalyst of calcium oxide, comprises the following steps:
with 55 parts, aluminium oxide, 5 parts of silica 1s, 15 parts of active carbons, 15 parts, calcium oxide adds in high mixer, mix 15min, but then the mixture in high mixer is added in the rotating disk of inclination of adjusting rotary speed, the rotating speed of rotating disk is 80r/min, gradient is 30 degree, spray into simultaneously water, the amount of spraying water is equivalent to aluminium oxide, silica, active carbon, 1/10 of each material gross weight of calcium oxide, in the process of dial rotation 25min, powder rolls and bonds, form the suitable spheroid of uniform size of size, then dry 2h at 120 ℃ of temperature, again at 600 ℃ of lower roasting 1.5h, and get final product.
Embodiment 3
The calcium sulfate of the present embodiment is produced the catalyst of calcium oxide, is made by the raw material of following parts by weight: 60 parts, aluminium oxide, 0 part of silica 1,15 parts of active carbons, 15 parts, calcium oxide.
Described alundum (Al2O3) (Al
2O
3) be γ-Al
2O
3
Described silica (SiO
2) be nano silicon;
Described active carbon is the mineral raw material active carbon, aperture 〉=20000nm;
The calcium sulfate of the present embodiment is produced the preparation technology of the catalyst of calcium oxide, comprises the following steps:
with 60 parts, aluminium oxide, 0 part of silica 1, 15 parts of active carbons, 15 parts, calcium oxide adds in high mixer, mix 8min, but then the mixture in high mixer is added in the rotating disk of inclination of adjusting rotary speed, the rotating speed of rotating disk is 75r/min, gradient is 30 degree, spray into simultaneously water, the amount of spraying water is equivalent to aluminium oxide, silica, active carbon, 1/10 of each material gross weight of calcium oxide, in the process of dial rotation 15min, powder rolls and bonds, form the suitable spheroid of uniform size of size, then dry 2h at 100 ℃ of temperature, again at 700 ℃ of lower roasting 2h, and get final product.
Embodiment 1-3 gained catalyst is invested in smelting furnace with solid form, and the addition of catalyst is 10% of calcium sulfate raw material, records according to mass change before and after reactant the conversion ratio that Sulphur Dioxide is sulfuric acid.The Sulphur Dioxide rate of embodiment 1-3 is listed in table 1.
Table 1 embodiment 1-3 Sulphur Dioxide rate result data
| ? | Conversion ratio |
| Conventional catalyst | 85% |
| Embodiment 1 | 90% |
| Embodiment 2 | 93% |
| Embodiment 3 | 91% |
Claims (8)
1. the catalyst of a calcium sulfate production calcium oxide, is characterized in that, made by the raw material of following parts by weight: aluminium oxide 50-60 part, silica 1 0-20 part, active carbon 10-20 part, calcium oxide 10-20 part.
2. calcium sulfate according to claim 1 is produced the catalyst of calcium oxide, it is characterized in that, is made by the raw material of following parts by weight: aluminium oxide 52-58 part, silica 1 2-18 part, active carbon 12-18 part, calcium oxide 12-18 part.
3. calcium sulfate according to claim 1 and 2 is produced the catalyst of calcium oxide, it is characterized in that, is made by the raw material of following parts by weight: 55 parts, aluminium oxide, 5 parts of silica 1s, 15 parts of active carbons, 15 parts, calcium oxide.
4. calcium sulfate according to claim 1 and 2 is produced the catalyst of calcium oxide, it is characterized in that, described alundum (Al2O3) is γ-Al
2O
3
5. calcium sulfate according to claim 1 and 2 is produced the catalyst of calcium oxide, it is characterized in that, described silica is nano silicon.
6. calcium sulfate according to claim 1 and 2 is produced the catalyst of calcium oxide, it is characterized in that, described active carbon is the mineral raw material active carbon, aperture 〉=20000nm.
7. one kind prepares the method for producing the catalyst of calcium oxide as calcium sulfate as described in one of claim 1-6, it is characterized in that, comprises the following steps:
with aluminium oxide 50-60 part, silica 1 0-20 part, active carbon 10-20 part, calcium oxide 10-20 part adds in high mixer, mix 5-15min, but then the mixture in high mixer is added in the rotating disk of inclination of adjusting rotary speed, the rotating speed of rotating disk is 70-80r/min, gradient is the 25-35 degree, spray into simultaneously water, the amount of spraying water is equivalent to aluminium oxide, silica, active carbon, the 0.05-0.15 of each material gross weight of calcium oxide doubly, in the process of dial rotation 15-25min, powder rolls and bonds, form the suitable spheroid of uniform size of size, then dry 1-2h at 100-140 ℃ of temperature, again at 600-700 ℃ of lower roasting 1-2h, and get final product.
8. prepare according to claim 7 calcium sulfate and produce the method for the catalyst of calcium oxide, it is characterized in that, comprise the following steps:
with aluminium oxide 50-60 part, silica 1 0-20 part, active carbon 10-20 part, calcium oxide 10-20 part adds in high mixer, mix 10min, but then the mixture in high mixer is added in the rotating disk of inclination of adjusting rotary speed, the rotating speed of rotating disk is 75r/min, gradient is 30 degree, spray into simultaneously water, the amount of spraying water is equivalent to aluminium oxide, silica, active carbon, 0.1 times of each material gross weight of calcium oxide binder, in the process of dial rotation 20min, powder rolls and bonds, form the suitable spheroid of uniform size of size, then dry 1.5h at 120 ℃ of temperature, again at 650 ℃ of lower roasting 1.5h, and get final product.
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| CN201310035595.XA CN103111275B (en) | 2013-01-30 | 2013-01-30 | A kind of calcium sulfate produces catalyst and the preparation technology thereof of calcium oxide |
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| CN103111275B CN103111275B (en) | 2015-09-02 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0341790B2 (en) * | 1981-05-06 | 1991-06-25 | ||
| CN1079417A (en) * | 1992-03-11 | 1993-12-15 | 斯南普罗吉蒂联合股票公司 | C 2-C 5Paraffin dehydrogenation is with catalyst precarsor method and the catalyst composition that activates with this method |
| JP2003341790A (en) * | 2002-05-27 | 2003-12-03 | Yasuda Seisakusho:Kk | Container device |
| CN101134169A (en) * | 2006-08-29 | 2008-03-05 | 奥克森诺奥勒芬化学股份有限公司 | Catalyst and method for producing iso-olefins |
-
2013
- 2013-01-30 CN CN201310035595.XA patent/CN103111275B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0341790B2 (en) * | 1981-05-06 | 1991-06-25 | ||
| CN1079417A (en) * | 1992-03-11 | 1993-12-15 | 斯南普罗吉蒂联合股票公司 | C 2-C 5Paraffin dehydrogenation is with catalyst precarsor method and the catalyst composition that activates with this method |
| JP2003341790A (en) * | 2002-05-27 | 2003-12-03 | Yasuda Seisakusho:Kk | Container device |
| CN101134169A (en) * | 2006-08-29 | 2008-03-05 | 奥克森诺奥勒芬化学股份有限公司 | Catalyst and method for producing iso-olefins |
Non-Patent Citations (4)
| Title |
|---|
| 刘豪 等: "煤灰氧化物与钙基固硫产物的高温多相反应机理", 《中国电机工程学报》 * |
| 周兴求 等: "《环保设备设计手册-大气污染控制设备》", 29 February 2004, 化学工业出版社 * |
| 季生福 等: "《催化剂基础及应用》", 31 August 2011, 化学工业出版社 * |
| 武增华 等: "氧化物添加剂对CaSO4高温温度性的影响", 《煤炭转化》 * |
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Effective date of registration: 20160825 Address after: An Industrial Park Economic Development Zone, Changde City, Hunan province Linli County 415200 Patentee after: Hunan Fu Xiang new type building material Co., Ltd. Address before: 410005, 12 floor, Haidong mansion, Furong Road, Changsha, Hunan Patentee before: Liu Liwen |