APPARATUS FOR COOLING A HOT GAS

摘要

Apparatus (1) for cooling a hot gaseous medium comprising: a vessel (2) wherein a bundle (3) of a number of pipes (4) are disposed in a coolant medium compartment (5) and wherein in use a liquid coolant medium (6) flows around the pipe bundle (3); (i) said pipes (4) being mounted at least at or near their upstream ends in a thermal shield (7), (ii) said pipes (4) further extend through a support plate (8) mounted at a distance from the thermal shield (7) determining a front space (9) between the thermal shield (7) and the support plate (8) in the vessel (2) separated from the coolant medium compartment (5), (iii) means (10) to add liquid coolant to the front space (9), (iv) the openings (11) in the support plate (8) are larger than the pipes (4) defining an annular space (12) between pipe and support plate, through which annular space (12) liquid coolant can flow co-current with the hot gaseous medium in the pipes (4) from the front space (9) to the cooling medium compartment (5), (v) wherein a skirt type extension (13) is present around the pipe (4) in the front space (9) fixed to the support plate (8) and having an opening (14) at the thermal shield (7).