COSMO offers air-blown, atmospheric pressure updraft gasifiers that convert almost any solid fuel into clean combustible ‘producer gas’. The gas, so produced, can be used to substitute any solid, liquid or gaseous fuels. The GCV of gas is in the range of 1100-1400 kcal/Nm3 depending upon fuel type and gasifier configuration.
COSMO gasifiers can convert wood wastes, agricultural / agro-industrial residues, municipal or industrial wastes and coal into producer gas. The fuels, to be gasified, are required to be in lump form. Loose or granular fuels, such as agricultural residues, need to be briquetted. The acceptable particle size of fuel is 25-100 mm for biomass and 20-50 mm for coal. Our Rice Husk gasifiers can accept rice husk as such, i.e. in granular form. The GCV of the fuel should be more than 3000 kcal/kg.
COSMO gasifiers have been built in both ‘Hot Gas Mode’ or ‘Cold-Clean Gas Mode’ as per the requirements of the application.
COSMO offers both ‘Single-Stage‘ and ‘Double-Stage’ updraft gasifier configurations. The double-stage gasifiers are more complicated and costlier, but generate better quality gas from low grade coal as compared to single-stage design.
COSMO gasifiers are built in various size ranges, as per the clients’ requirements, up to 4.6 m reactor diameter. To cater to large capacity requirements, a number of gasifiers are installed in parallel supplying gas to the consumer through a common gas duct.
COSMO gasifiers are known in the industry for smooth operation with Indian high ash coal (up to 47% ash content). At the same time, there is adequate experience of gasifying low ash biomass fuels (including wood with 1% ash).
COSMO’s pyrolysis technology consists of indirectly heated continuous reactor. It is designed for loose biomass fuels, such as agricultural residues. Wood or bamboo need to chipped to less than 10 mm size.
The primary objective is to produce ‘green carbon’ to substitute mineral carbon. The pyrolysis liquids (bio-oil) and gases will be available as by-product streams. In due course, the gas stream is expected to take higher value pathways, such synthesis to liquid fuels or conversion to hydrogen.