QUENCHING SYSTEM FOR COOLING AND CLEANING DUST-CONDUCTING CRUDE GASIFICATION GAS

摘要

Separation of dust in a quenching device arranged downstream of an entrained-flow gasification system is increased by a baffle with a double deflection system for deflecting the crude gas at approximately 180° angle. An additional spraying element is provided. The arrangement can be single-sided or double-sided, or can include an additional weir.

主权项

1. A device for separating off entrained solids from crude gas in an entrained flow gasification appliance that is operated at many times atmospheric pressure, the appliance having a gasification chamber, a quench chamber downstream of the gasification chamber, the quench chamber being configured for injection of quench water in excess to cool the crude gas to saturation temperature;
a dividing wall in the quench chamber is arranged upstream of a crude gas exit, in and through an inner wall of the quench chamber, the dividing wall extends circumferentially past the crude gas exit and terminates at the inner wall of the quench chamber on both sides of the crude gas exit; the dividing wall is shaped to define an opening at the top end and at the bottom end thereof into the quench chamber; the bottom end of the dividing wall is located and configured to be immersed in a water bath at the bottom of the quench chamber; the top end of the dividing wall is located higher than an upper edge of the crude gas exit; a hood at the top end of the dividing wall defines a canopy over the open top end of the dividing wall; and the hood has a bottom edge that is lower than the top end of the dividing wall, in such a manner that the crude gas is deflected upwards via the surface of the water bath at the bottom of the quench chamber where the gas ascends into the space between the hood and the dividing wall and particles are separated off into the water bath, and the crude gas is deflected to flow downwards via the top end of the dividing wall and then leaves the crude gas exit.