The influence factors of dielectric barrier discharge plasma to production of syngas derived from H2S‒CO2 acid gas

H2S and CO2, two harmful acid waste gases, often co-exist in important chemical production such as coal-chemical industry, natural gas chemical industry and petrochemical industry, causing corrosion of industrial equipment and pipelines, and must be treated innocuously. Co-conversion of H2S‒CO2 mixed acid gas to syngas has been carried out using dielectric barrier discharge plasma-catalysis, which harmless the highly corrosive and toxic H2S and greenhouse gas CO2, and produces syngas. The effects of various parameters of the dielectric barrier discharge plasma reaction used for the one-step conversion of H2S‒CO2 to syngas were studied. Moreover, a comparative study of the different parameters was carried out. The internal relationship between the specific energy input (SEI), discharge form, discharge frequency, discharge gap and discharge length and the reaction performance of the conversion of H2S‒CO2 to syngas was investigated and revealed. On this basis, a multi-tube parallel dielectric barrier discharge plasma reaction system was designed and constructed.