Sulfonation apparatus

Details Sulfonation apparatus Sulfonation apparatus

1977-04-22

1978-06-27

Tayman, Jr., James H.

Chemistry: physical processes

Physical processes

Crystallization

23284, 23285, 23260, 260505S, 260459R, 165130, 165141, 165140, 261146, C07C14324, B01J 100, F28D 712

Patent

active

040972429

ABSTRACT:
A sulfonation apparatus comprising a plurality of vertical first-stage reaction tubes in which the sulfonatable material and an SO.sub.3 -containing gas are flowed upwardly from the lower ends thereof and a single vertical second-stage reaction tube in which the reaction products from the upper ends of all of the first-stage reaction tubes are combined and are flowed downwardly together with fresh SO.sub.3 -containing gas in order to complete the sulfonation reaction.

REFERENCES:
patent: 3270038 (1966-08-01), Marshall et al.
patent: 3891689 (1975-06-01), Pryce

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