Desulfur catalyst

A desulfurization catalyst and catalyst technology, applied in the direction of physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. Problems such as increased negative load resistance of the system

Inactive Publication Date: 2005-01-05
四川五色石环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Industrial practices in recent years have shown that flue gas purification technology is the key to controlling SO 2 An effective way to discharge, desulfurization catalyst is an important part of flue gas purification technology, it can be divided into solid and liquid desulfurization catalysts, among them, zinc oxide solid desulfurization catalyst is most widely used in fine desulfurization of various petrochemical raw materials and industrial gases Widely, zinc oxide desulfurizers mainly include high-temperature and low-temperature types. The former is used at a temperature of 350-400°C, and the latter is used at a temperature of 180-250°C. Since both types of desulfurizers need to be used at a certain temperature, it is necessary to There is a heat source and consumes a certain amount of energy. Generally, it cannot be used at room temperature, so the scope of application of this catalyst is narrow;
[0003] Many years ago, the Soviet Union us...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: take catalyst weight as basis, adopt following formula to prepare catalyst:

[0026] ZnO...................64%

[0027] NiO...................1%

[0028] CaAlO 3 ..........11%

[0029] TiO 2 ..........0.5%

[0030] C 0 O..........0.9%

[0031] m 0 O..........0.7%

[0032] Al 2 o 3 ..........21.9%

[0033] Mix the raw materials of each component in the above formula according to the amount stated in the formula, and then grind them in a ball mill for 4 to 6 hours until the fineness above 120 mesh must account for 30% of the weight, and then go through a tablet machine to tablet, After crushing by the crusher (i.e. granulation), pass through a 120-mesh sieve and send it to the ring press machine for compression molding, and then press it at 4kg / cm 2 After steaming in the autoclave for 4 hours, send it to the furnace and roast it at 400-500°C for 12 hours to obtain the desulfurization catalyst.

[0034] The average pore diameter of the catalyst i...

Embodiment 2

[0037] Embodiment 2: take catalyst weight as basis, adopt following formula to prepare catalyst:

[0038] ZnO...................9%

[0039] NiO...................0.5%

[0040] CaAlO 3 ................15%

[0041] TiO 2 ..........0.5%

[0042] C 0 O...................2%

[0043] m 0 O...................3%

[0044] al 2 o 3 ..........70%

[0045] Produce catalyst by the method in embodiment 1, the average pore diameter of this catalyst is 16.1nm, and pore volume is 0.5ml / g; Specific surface area is 450m 2 / g, the bulk density is 1.08g / ml, and the compressive strength is 170N / cm.

[0046] This catalyst is installed in the desulfurizer to remove SO in the exhaust flue gas of coal as fuel 2 , the exhaust flue gas contains 45mg / m 3 SO 2 , Use this catalyst to desulfurize exhaust flue gas at normal temperature and pressure, and the sulfur content in the desulfurized gas is below 1ppm.

[0047] The regeneration method of this catalyst is the same as the method in Exampl...

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Abstract

A desulfurizing catalyst for removing sulfide, thiooxide and thioether from natural gas or fume contains ZnO, NiO, CaAlO3, TiO2, CoO, MoO and A2O3.

Description

technical field [0001] The invention relates to a solid desulfurization catalyst for removing toxic and harmful substances such as sulfide, sulfur oxide and sulfide in natural gas and flue gas under certain temperature and pressure conditions. Specifically, the invention relates to a Zinc-containing solid desulfurization catalyst. Background technique [0002] SO contained in flue gas released by burning fossil fuels (coal, oil, natural gas, etc.) in energy, chemical, metallurgy, electronics and other industries 2 Cause serious pollution to the atmosphere, my country has become the world's largest SO 2 As the country with the largest emission and the third largest acid rain area, environmental issues have become a key issue for the development of my country's national economy. Industrial practices in recent years have shown that flue gas purification technology is the key to controlling SO 2 An effective way to discharge, desulfurization catalyst is ...

Claims

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Application Information

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IPC IPC(8): B01D53/48B01D53/86B01J23/887
Inventor 杨典明
Owner 四川五色石环保科技有限公司
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