Process and apparatus for the synthesis of urea and material use

Details Process and apparatus for the synthesis of urea and material use Process and apparatus for the synthesis of urea and material use

1988-03-22

1990-02-13

Davis, Jr., Albert W.

Heat exchange

With coated, roughened or polished surface

165180, F28F 1906

Patent

active

048998133

ABSTRACT:
Process and apparatus for the production of urea, wherein the carbamate decomposers and/or condensers are equipped with stainless steel tubes internally lined with zirconium.

REFERENCES:
patent: 3041152 (1962-06-01), Christensen
patent: 3236888 (1966-02-01), Wentworth
patent: 3515520 (1970-06-01), Hervert
patent: 4210600 (1980-07-01), Zardi
patent: 4291104 (1981-09-01), Keifert
patent: 4559207 (1985-12-01), Hiller et al.

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