Wet oxidation system startup process

Details Wet oxidation system startup process Wet oxidation system startup process

1992-04-22

1993-08-10

Silverman, Stanley S.

Liquid purification or separation

Processes

Chemical treatment

C02F 172

Patent

active

052346072

ABSTRACT:
The invention is a process for starting up a wet oxidation system using essentially pure oxygen for oxidation of a concentrated wastewater. Flow of startup water and air is established through the wet oxidation system at an elevated temperature and pressure. An incremental increase in flow of oxygen and wastewater to the system commences while simultaneously an incremental decrease in flow of startup water and air occurs, raising system temperature in a controlled fashion. The incremental changes in flows are repeated until the wastewater and pure oxygen have reached about 100 percent of selected operating flows, the startup water and air flows have decreased to zero, and the system has attained the selected operating temperature, while maintaining a selected oxygen residual in the offgases.

REFERENCES:
patent: 4141829 (1979-02-01), Thiel et al.
patent: 4369115 (1983-01-01), Bauer
patent: 4384959 (1983-05-01), Bauer et al.
patent: 4395339 (1983-07-01), Chowdhury et al.
patent: 4853136 (1989-08-01), Roussel et al.
patent: 5057231 (1991-10-01), Mueller et al.

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