DMC PROCESSES FOR OIL AND GAS CONDENSATE TREATMENT FOR HYDROGEN SULFIDE AND MERCAPTANS

DMC-1 process

The process is used for treating light oils and gas condensates for hydrogen sulfide (from 50 to 5 ppm) and low molecular weight С12 mercaptans (from 600 tо 20 ppm).

DMC-1M process

The process is used for treating heavy oils and gas condensates for low molecular weight С12 mercaptans (from 300 to 20 ppm) and hydrogen sulfide (from 50 tо 5 ppm) on oil fields.

DMC-1MA process

The most efficient and energy-conserving process for treating oil with high hydrogen sulfide content (from 500-700 ppm tо 5 ppm) is liquid-phase oxidation of hydrogen sulfide and mercaptans using aqueous-ammonia solutions of IVKAZ catalyst.

DMС-2 PROCESS

The process is used for treating light oil and gas condensates for hydrogen sulfide and low molecular weight С1–С3 mercaptans without contact of oil with air. DМС-2 plants were put into operation by modification of DМС-1 plants on JV “Tengizchevroil” (Kazakhstan).

DMC-3 process

The process is used for treating oils and gas condensates for hydrogen sulfide (from 100 tо 5 ppm) and low molecular weight С14 mercaptans (from 4000 tо 50 ppm).

Why are formaldehyde-based adsorbents (scavengers) of hydrogen sulfide and mercaptans not to be used?