초록 ▼

Gas containing sulfide is washed in the washing vessel (13) with a washing liquid that normally comprises an alkaline solution having sodium 1,4-naphthoquinone-2-sulfonate as the catalyst. Contaminated liquid is subjected in a pressure vessel (59) to aeration under pressure with air or pure oxygen.

Gas containing sulfide is washed in the washing vessel (13) with a washing liquid that normally comprises an alkaline solution having sodium 1,4-naphthoquinone-2-sulfonate as the catalyst. Contaminated liquid is subjected in a pressure vessel (59) to aeration under pressure with air or pure oxygen. By oxidation, elementary sulfur precipitates out and this is filtered out continuously in the filter (77). Regenerated washing liquid flows via a degassing vessel (69) into the storage container (27) and from there returns to the washing vessel (13). In the degassing vessel, under relaxed pressure, degassing occurs, and the sulfur foam along with the oxygen or air it contains is returned via the pump (55) to the presure vessel (59) or to the filter (77).

대표청구항 ▼

Method of desulfurization of gases containing sulfur contaminants, utilizing the steps of providing reservoirs (27, 31, 33) of washing or scrubbing liquid; washing the gas in an absorber (11) with a washing liquid and thereby forming a contaminated liquid including sulfur compounds in the washing li

Method of desulfurization of gases containing sulfur contaminants, utilizing the steps of providing reservoirs (27, 31, 33) of washing or scrubbing liquid; washing the gas in an absorber (11) with a washing liquid and thereby forming a contaminated liquid including sulfur compounds in the washing liquid; circulating the washing liquid in a first scrubbing loop from said reservoir (31) through said absorber (11) back to reservoir (31) at a first flow rate and in a second regenerating loop, through a regenerator vessel (59) and back into said reservoir (35) at a second flow rate; in said second loop, aerating and oxidizing the sulfur compounds and decontaminating the washing liquid by introducing a gas containing oxygen to the washing liquid; removing elemental sulfur from the oxidized liquid and introducing the decontaminated liquid via said reservoir (33) into the first loop prior to the washing step, wherein the aerating and oxidizing step comprises introducing oxygen to the contaminated liquid in said regenerator vessel (59) under hyperbaric pressure which is sufficient to effect oxidation of hydrogen sulfide to elemental sulfur, drawing off a portion of said liquid in said regenerator vessel at a third flow rate and contacting said portion with said oxygen while reintroducing said portion into said regenerator vessel; and wherein the step of circulating the washing liquid prior to reintroduction of the liquid to the washing step comprises the step of degassing the liquid, after the aerating and oxidizing step in said regenerator vessel (59).