Invention Grant
US4643886A Automatic pH control in a process for removal of hydrogen sulfide from a
gas
失效
在气体中除去硫化氢的过程中的自动pH控制
- Patent Title: Automatic pH control in a process for removal of hydrogen sulfide from a gas
- Patent Title (中): 在气体中除去硫化氢的过程中的自动pH控制
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Application No.: US805672Application Date: 1985-12-06
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Publication No.: US4643886APublication Date: 1987-02-17
- Inventor: Dane Chang , Stephen A. Bedell
- Applicant: Dane Chang , Stephen A. Bedell
- Applicant Address: MI Midland
- Assignee: The Dow Chemical Company
- Current Assignee: The Dow Chemical Company
- Current Assignee Address: MI Midland
- Main IPC: B01D53/14
- IPC: B01D53/14 ; C01B17/05 ; C01B17/16 ; C01B31/20 ; C25B1/02
Abstract:
A method for removing hydrogen sulfide from a gaseous stream by contacting the gaseous stream with a polyvalent metal chelate present in an aqueous alkaline scrubbing solution including the regeneration of the polyvalent metal chelate in an electrolytic cell and automatic control of the pH of said aqueous alkaline scrubbing solution at about 7 to 9.
Public/Granted literature
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