초록 ▼

Seal oil contaminated with H2S has air or N2 bubbled therethrough for reducing the H2S content of the liquid. The bubbling of the gas through the contaminated liquid is achieved by way of a novel two-state sparger unit situated in a container which receives the contaminated liquid, this container be

Seal oil contaminated with H2S has air or N2 bubbled therethrough for reducing the H2S content of the liquid. The bubbling of the gas through the contaminated liquid is achieved by way of a novel two-state sparger unit situated in a container which receives the contaminated liquid, this container being vented at an upper portion to the outer atmosphere and being connected with a pipe which withdraws decontaminated liquid from the container.

대표청구항 ▼

A high efficiency method of removing H2S from contaminated seal oil comprising the steps of introducing said contaminated seal oil into a lower portion of a first stage compartment, introducing either gaseous nitrogen or air sparging gas into a lower portion of said compartment throughout a major po

A high efficiency method of removing H2S from contaminated seal oil comprising the steps of introducing said contaminated seal oil into a lower portion of a first stage compartment, introducing either gaseous nitrogen or air sparging gas into a lower portion of said compartment throughout a major portion of its bottom surface, allowing the seal oil to overflow from the top of said first stage compartment into the top of a first portion of a second stage compartment, said second stage compartment having a vertical partition wall therein extending above the surface level of the seal oil therein and terminating at its lower edge adjacent the bottom surface of said second stage compartment to divide said compartment into a first portion and a second portion and define a passageway for the flow of seal oil therebetween, introducing additional sparging gas across substantially the initial bottom portion of said first portion of the second stage compartment to thereby bubble said sparging gas upwardly through said first portion countercurrent to the downward flow of seal oil through said first portion, introducing a further supply of sparging gas into the bottom area of said second portion below the lower edge of said vertical partition wall to thereby bubble said sparging gas upwardly through the seal oil flowing under the bottom edge of said vertical partition into said second portion, withdrawing sparging gas containing H2S from the upper portion of said first and second stage compartments, and withdrawing seal oil substantially free of H2S at the surface level of the seal oil in said second portion of said second stage compartment.