What is the impact of the catalytic cracking LTAG technology on absorption and stabilization operations?
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Which catalytic systems use LTAG technology? What is the impact on the operation of the absorption stabilization system and the quality of dry gas and liquid hydrocarbons?
Tests have only been conducted at Shilian; it has not yet been released.
This technology is the selective hydrogenation saturation of catalytic cracking light cycle oil combined with selective catalytic cracking to produce high-octane gasoline or light aromatics (LTAG); it was developed jointly by the Petroleum Chemical Science Research Institute and Shijiazhuang Refining & Chemical Co., Ltd. For details, click the link: http://www.sinopecgroup.com/group/xwzx/gsyw/20151127/news_20151127_347868017212.shtml
Two plants in Shijiazhuang use this technology for catalysis; I heard that Qingdao Petrochemical has also made changes, but I’m not sure what the results are
That’s right; Sinopec is promoting this technology, but it’s not yet known how well it performs
Does anyone know about the LTAG technology used in Shijiazhuang Refining & Chemical, and the location of the diesel feed inlet in the catalytic cracking unit?
The raw material for the catalytic unit is atmospheric residue oil; diesel is injected about 2 meters below the nozzle for the feed oil, so it comes into contact with the catalyst first. The reaction temperature must be quite high – won’t this result in an excessive amount of gas and coke being produced from the diesel? I’m not quite sure why it’s placed below the raw material nozzle rather than above it
Diesel is reprocessed and fed into the riser, with the nozzle located above the main feed, in order to increase gasoline yield.