The LPG Desulfurization Catalyst

Petroleum refining process, coking, atmospheric, pressure, catalytic cracking sharks produce liquefied petroleum gas contains a lot of sulfide, sulfide will cause subsequent processing catalyst poisoning and inactivation, two elements of sulfur and hydrogen sulfide corrosion of pipeline and storage containers, as a civil fuel, will generate SOX pollution environment, the formation of acid rain, etc. At present, the total sulfur content of LPG is required as a fuel at home and abroad. If it is used as a chemical raw material, it is even stricter. China's liquefied gas standard (GB1174.1997) stipulates that the total sulfur mass fraction in LPG is less than 343mg/m3, So the deep removal of sulfide in LPG has important economic and environmental significance.

At present, domestic and foreign industrial desulfurization is mainly divided into dry desulfurization, wet stripping and molecular sieve desulfurization is relatively common, and the process is relatively mature. However, the cost of wet desulfurization catalyst is quite high, and the productivity is affected to a certain extent. In the production process, it is easy to cause the accident of running loss of liquefied gas, resulting in the insecurity of production. Due to the use of liquid caralkali increases the environmental pressure.

Molecular sieve adsorption desulfurization has the advantages of no pre-alkali washing, no pollution, and adsorption at room temperature, but it needs to be regenerated at about 300℃ athigh temperature, thus increasing the operating cost, and the capital investment is large. Therefore, the desulfurization of thousand LPG for molecular sieve is limited.

25kg/woven bag, 800kg/pallet

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