Sulfur recovery catalyst selection?
Thread Content
This post was last edited by liaifeng on 2018-9-1 at 12:05. Dear colleagues: Our company uses Hefeng Company’s Super Claus sulfur recovery process, and we are now faced with the need to replace the catalysts. Original catalysts from abroad are too expensive, so we are considering using domestic alternatives. Currently, there are very few manufacturers capable of producing such catalysts; Shandong Xunda is one of them. Do any of you have any successful experiences or recommendations for manufacturers? Thank you!
The CT series catalysts from the Natural Gas Research Institute of the Southwest Oil and Gas Field, and the L series from the Qilu Petrochemical Research Institute of Sinopec
The catalysts produced by the Southwest Institute and the Qilu Institute are still of good quality, and they enjoy a good reputation in the industry! It mainly depends on the compatibility of the processes!
Domestic sulfur recovery catalyst technology is now quite mature. By adopting an appropriate strategy for catalyst loading, including the proper combination of catalysts and the sequence in which they are loaded, it is possible to reduce costs, extend the service life of the catalysts, and improve efficiency.
Hahaha, one must definitely consider the thickness of the loading layer, the sequence, and the compatibility, as the loading amount specified in the original process package is determined by taking into account both the properties of the feed gas and those of the catalyst. Therefore, it is advisable to conduct research and analysis on the reactor size, gas flow rate, pressure drop, and catalyst efficiency.
Are there any examples of the actual use of the Super Claus sulfur recovery catalyst?
They might be more concerned about how it performs under those process conditions Which organization has actually used it? Share some experience? I’d like to learn* it, thank you!
If cost allows, it is recommended to opt for imported ones. Our Hefeng Chaoke catalysts have been in use for 12 years without many problems; domestic catalysts likely last only about 3 years
To use an imperfect analogy: a good catalyst is like a good car； But it’s also crucial to make good use of a good catalyst; just as a good car needs a skilled driver to reach the highest speed. In my opinion: 1. In terms of catalysts, the sulfur production catalysts and low-temperature hydrogenation catalysts developed by Qilu Keli have reached international advanced levels, or even exceed them. Based on practical operation experience in industrial plants, by using a proper combination of the titanium-based catalyst LS-981G and the alumina-based catalyst LS-02, the conversion rate in the Claus process can reach 97% ； 2. During the catalyst loading process, it is essential to follow the catalyst loading procedure strictly, paying special attention to even spreading of the catalyst and preventing workers from stepping on it; this plays an important role in avoiding uneven distribution of the catalyst and ensuring its full activity ； 3. Increase the operational rate of the ratio control circuit, monitor the quality of the acid gas upstream, and strictly keep the temperature of the reaction furnace within the specified range; this can effectively prevent contamination of the catalyst bed caused by catalyst carbon deposition, ammonium salt blockages, and other issues ；