公开(公告)号：KR840001427B1

公开(公告)日：1984-09-26

申请号：KR800002115

申请日：1980-05-28

Applicant: DIAMOND SHAMROCK CORP

Inventor： KIDON WILLIAM E ,  SHUSTER NICHOLAS ,  BABINSKY ANDROW D

IPC: C25B1/00 ,  C25B1/16 ,  C25B1/22

公开(公告)号：CA1164403A

公开(公告)日：1984-03-27

申请号：CA352649

申请日：1980-05-23

Applicant: DIAMOND SHAMROCK CORP

Inventor： KIDON WILLIAM E ,  SHUSTER NICHOLAS ,  BABINSKY ANDREW D

IPC: C25B1/00 ,  C25B1/16 ,  C25B1/22

Abstract: PRODUCTION OF CHROMIC ACID USING TWOCOMPARTMENT AND THREE-COMPARTMENT CELLS Chromic acid is now produced in simplified processing that also reduces acid contaminants, while using the alkali metal chromate typically available at an early stage in chromic acid production from chrome ore. In the process, chromate is converted to dichromate in the anode compartment of either a two-compartment, or three-compartment, electrolytic cell. During electrolysis, metal ion contamination is reduced. Withdrawn anolyte from this first cell may then be concentrated. The dichromate feed, possibly concentrated, is then introduced to the center compartment of a threecompartment electrolytic cell and flows through a porous diaphragm to the anode compartment of the cell. The anolyte from this later electrolytic cell, rich in chromic acid, can be concentrated, cooled, and the chromic acid recovered. Liquid removed from chromic acid recovery can be recycled. Alkali product is produced in the cathode compartment of each cell.

公开(公告)号：CA1072702A

公开(公告)日：1980-03-04

申请号：CA269854

申请日：1977-01-17

Applicant: DIAMOND SHAMROCK CORP

Inventor： LIEB DONALD F ,  STILLMAN NEIL W ,  KIDON WILLIAM E

IPC: E03D5/016 ,  E03D11/11 ,  E03D5/01 ,  E03D9/10

Abstract: RECIRCULATING TOILET AND METHOD A recirculating toilet having a bowl and a storage chamber, and recirculating means for recirculating liquid from the storage chamber through the bowl and back into the storage chamber. Filter means is interposed between the storage chamber and the recirculating means for filtering solid particles from liquid flowing from the storage chamber toward the recirculating means. A treatment chamber is interposed between the filter means and the recirculating means, and the treatment chamber has a volume substantially smaller than the storage chamber. Treatment means is provided for destroying bacteria in liquid contained in the treatment chamber (flush water).

公开(公告)号：CA1137919A

公开(公告)日：1982-12-21

申请号：CA352648

申请日：1980-05-23

Applicant: DIAMOND SHAMROCK CORP

Inventor： SHUSTER NICHOLAS ,  BABINSKY ANDREW D ,  KIDON WILLIAM E

IPC: C25B1/22

Abstract: CHROMIC ACID PRODUCTION PROCESS USING A THREE-COMPARTMENT CELL Chromic acid production is now simplified in a process using the concentrated dichromate typically available at an intermediate stage when chromic acid is produced from chrome ore. In the process, the dichromate is treated in a three-compartment cell as, for example, after removal of the sulfate or carbonate salt evolved in the overall production process. The dichromate feed enters the center compartment of the three-compartment cell and then flows through a porous diaphragm to the anode compartment of the cell and is electrolyzed at elevated current density. Depleted feed solution maybe withdrawn from the center compartment and recirculated for reuse. Concentrated, water-white alkali product is produced in the cathode compartment. The anolyte from the cell, rich in chromic acid, can be concentrated, cooled, and the chromic acid recovered. Liquid removed from chromic acid recovery can be recirculated for subsequent electrolysis, as by combination with the feed. Both alkali product and anolyte chromic acid can be produced at enhanced current efficiency.