ROBERT JOSEPH SCHROEDER
Pilots at Edgeware Ln, Salt Lake City, UT
License number
Utah A4290700
Issued Date
Aug 2015
Expiration Date
Aug 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
4638 Edgeware Ln, Salt Lake City, UT 84119
Professional information
Removal Of Sodium Chloride From Pulp Mill Systems
US Patent:
3954552, May 4, 1976
Filed:
Aug 5, 1974
Appl. No.:
5/495088
Inventors:
Jerome A. Lukes - Ogden UT
Robert P. Schroeder - Salt Lake City UT
Robert P. Schroeder - Salt Lake City UT
Assignee:
Erco Envirotech Ltd. - Islington
International Classification:
D21C 302, D21C 1104
US Classification:
162 17
Abstract:
Smelts produced in spent pulping liquor recovery operations and containing sodium chloride are treated to remove sodium chloride therefrom in pure form while the loss of usable components is avoided. A solid mixture of sodium chloride, sodium carbonate and sodium sulphate is provided as such in a soda mill, or first is separated from sodium sulphide, by fractionating the smelt where sodium sulphide is present, as in the Kraft mill. The solid mixture is leached at a high temperature to remove all the sodium chloride values therefrom, along with part of the sodium carbonate and sodium sulphate. Pure sodium chloride is deposited by cooling the leach liquor and the mother liquor is recycled to the leaching step.
Sodium Chloride Removal In Pulp Mill Systems
US Patent:
3945880, Mar 23, 1976
Filed:
Aug 5, 1974
Appl. No.:
5/494897
Inventors:
Jerome A. Lukes - Ogden UT
Robert P. Schroeder - Salt Lake City UT
Robert P. Schroeder - Salt Lake City UT
Assignee:
Erco Envirotech Ltd. - Islington
International Classification:
D21C 302, D21C 1104
US Classification:
162 17
Abstract:
Smelts produced in Kraft mill and soda mill spent pulping liquor recovery operations and containing sodium chloride are treated to remove sodium chloride therefrom in pure form while the removal of usable components is avoided. A solid mixture of sodium chloride, sodium carbonate and sodium sulphate is provided in the case of the soda mill, or first is separated from the sodium sulphide in the case of the Kraft mill. Thereafter, the solid mixture is leached to remove the sodium carbonate and sodium sulphate while leaving the sodium chloride in a substantially pure form, the resulting leach liquor being refrigerated to deposit sodium carbonate and sodium sulphate. The mother liquor, after removal of the deposited salts is recycled to the solid mixture leaching step.