Transform reaction mechanism

Curing conditions on catalyst activity and lifetime are important early influence. Dry air curing, the HS is high enough temperatures to strengthen the sulfide concentration and activity of the catalyst is essential to improve the basic conditions. The only mandatory curing it possible to obtain good curing conditions. Laboratory research and industrial practice that, even if the carrier gas in the steam curing gas ratio of only 0.1, which decreased activity of the catalyst particle size of the original 15 ~ 2O, the higher the catalyst activity in the duration has been shortened under.

Carrier gas in the H S concentration should be not less than 3 g / m. And 420 ~ 450 ℃ high temperature curing for enhanced catalytic activity to improve the nature of the research laboratory has repeatedly been confirmed. Some furnace manufacturers in low-population variable is not set before the electric heater, and the use of natural curing method, namely the use of heat exchangers export about 200 ℃ wet conversion gas contains a small amount of HS of slow curing catalyst. This curing method not only greatly extended the time required, and the activity of the catalyst after vulcanization far short of expectations. (Or higher temperatures the population, or low to high furnace exit CO), reactive depression is also faster to achieve their economic benefits, so the natural curing method is not desirable.