TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The carbon monoxide, on dry basis, in the gas mixture obtained in step (a) is 50-75 vol.%. The space velocity in fixed bed reactor or in any one fixed bed reactor of series of reactors of step (d) is 6000-9000 hour-1. The carbon monoxide, on a dry basis, in gas mixture obtained in step (d) is below 5 (preferably below 1) vol.%. Preferred Process: The gas mixture as obtained in step (a) is reduced in temperature by means of an indirect heat exchanger to a temperature of 150-400 degrees C. The water gas shift reaction is performed in a series of 4 or 5 reactors. Each reactor is operated such that the maximum temperature in the fixed bed not greater than 440 degrees C (preferably not greater than 400 degrees C). No water or steam is added to gas mixture obtained in step (c) before subjecting gas mixture to water gas shift reaction.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The solvent of step (e) comprises mixture of dimethyl- or diethyl-ethers of polyethylene glycols. The solvent is mixture of dimethylethers of polyethylene glycols of formula CH3O(CH2H4O)xCH3.x=3-9. EXAMPLE - A water scrubbed syngas mixture of carbon monoxide (68.7 vol.%) and hydrogen (22.6 vol.%) as obtained in a coal gasification process and having the composition comprising carbon dioxide (6.8 vol.%), nitrogen (1.5 vol.%), water/carbon monoxide molar ratio (0.32) and sulfur content (2150 ppm) and having temperature 177 degrees C was fed to a first water gas shift (WGS) reactor at a space velocity of 8000 hour-1. To the effluent of the first WGS reactor an amount of steam was added to achieve a H2O/CO molar ratio of 0.32. The resulting mixture was fed to a second WGS reactor at the inlet temperature of 210 degrees C and outlet temperature of 401 degrees C, where inlet CO content was 68.6 vol.% and outlet CO content was 40 vol.%. The effluent of the second reactor was in turn provided to a third WGS reactor after adding some steam. The effluent of the third reactor was in turn provided to a fourth WGS reactor after adding some steam and the effluent of the fourth reactor was in turn provided to a fifth WGS reactor after adding some steam. It was observed that more than 90% conversion of CO was achieved using relatively low amount of added steam corresponding to an overall steam/CO ratio of 1. The space velocity was found to be 8000 hour-1.