Chemical Sciences

• The process developed will remove diesel sulphur from 450 ppm to < 50 ppm, meeting the Bharat Stage IV specifications • The hydrogen requirement will be 5-6 times lower than the conventional diesel desulphurisation process. • CO2 emission will be accordingly lowered • There is only limited nitrogen requirement for purge purposes. No additional recycle gas compressor is required for nitrogen . This will reduce the capital expenditure substantially. • The adsorbent is regenerated thermally with air . • Effluent streams can be handled with in existing refinery treatment facilities. • Operating pressures are 10 to 15 times lower than conventional diesel hydrodesulphurisation processes. • Substantial savings in equipment costs for adsorber and separator vessels are there due a to low pressure operation . • Commercially available zeolites can be used after proper modifications.