Sulphite pulp cooking liquors customarily have been stored in wooden tanks when operating conditions are atmospheric temperature and pressure, and in ceramic-lined steel tanks when higher pressures and temperatures are involved.
Wooden storage tanks present a costly maintenance and replacement problem and ceramic linings also are a problem because of the necessity of replacing the lining
Another consideration in connection with storage of these corrosive liquors is the absorption of gases during and after the cooks, necessitating equipment capable of withstanding pressure to give better and more uniform absorption.
Because cooking liquors are highly corrosive it was necessary to conduct a testing program to determine which of the available alloys was best suited and most practical for the operating conditions involved.
A number of grades of alloy processed to duplicate fabricating conditions for field-erected vessels were exposed to actual operating conditions. Included in the test program were specimens of alloy...
