C - Chemistry – Metallurgy – 10 – G
Patent
C - Chemistry, Metallurgy
10
G
196/1, 196/198
C10G 35/04 (2006.01) C07C 2/62 (2006.01) G01N 31/16 (2006.01)
Patent
CA 1085757
ABSTRACT OF DISCLOSURE The water content of an alkylation catalyst comprising water and an acid selected from the group consisting of sulfuric acid and fluorosulfuric acid is determined continuously by contacting fuming sulfuric acid with said catalyst in a flow ratio sufficient to maintain the mixture thus formed at the point of incipient fuming. The presence of SO3 evolved therefrom is determined by use of an SO3 detector. The flow ratio at the point of incipient fuming is a direct measure of the amount of water in the alkylation catalyst stream. The water content thus measured is then compared to the desired water content and a signal corresponding to the deviation is used to vary the rate of fresh acid makeup to the alkylation reaction zone so as to maintain the desired water content of the catalyst in said reaction zone.
266308
Borden Ladner Gervais Llp
Exxon Research And Engineering Company
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