Method for the production of cleaned and cooled synthesis gas

摘要

The hot raw synthesis gas stream leaving the reaction zone of a free flow partial oxidation gas generator at a temperature in the range of about 1800 DEG to 3000 DEG F. is passed through a first gas diversion and residue separation zone where the velocity of the gas stream is reduced and its direction is diverted into a side transfer line. Solid material and molten slag separate by gravity from the gas stream. The hot gas stream is then introduced into a second gas diversion and residue separation zone where the direction and velocity is changed and additional residue is separated. About 0.5 to 20 vol. % of the hot gas stream may be passed through bottom outlets in said first and second gas diversion zones in order to prevent bridging. The hot gas stream from the second gas diversion zone is passed upwardly through a radiant cooler where additional solid matter is removed by gravity and the gas temperature is reduced to a temperature in the range of about 900 DEG to 1800 DEG F. In this embodiment, the second diversion and residue separation zone comprises a plurality of high temperature resistant thermally insulated cyclones connected in series or in parallel. Entrained solid matter and slag are removed from the gas stream by means of said cyclone separators without substantially reducing the temperature of the gas stream.