Patent ID: 9695371
Date: 2017-07-04
CPC Classifications: C10J

Claim:
1. An apparatus for treating hot crude gases and liquid slag having temperatures of 1200-1800° C. and pressures of up to 10 MPa in an entrained flow gasification of fuel dust, the apparatus comprising a gasification reactor, a quencher, a crude gas and slug outlet, a crude gas outlet, a funnel, first nozzles, and second nozzles, wherein the quencher is arranged downstream of the gasification reactor, and the quencher and the gasification reactor are surrounded by a pressure wall; the crude gas and slag outlet connects the gasification reactor to the quencher; the quencher has an inner wall spaced inward of the pressure wall; a waterbath is located in a lower part of the quencher; a free space quench is located in the quencher in flow succession after the crude gas and slag outlet, the free space quench having the first nozzles located and configured for injecting cooling and scrubbing water into the free space quench; the funnel is located in the quencher inside the inner wall and downstream of the free-space quench; the funnel has an upper end in contact with the inner wall of the quencher and has an open lower end dipping into the waterbath; an annular space is formed between the funnel, a surface of the waterbath, and the inner wall of the quencher; the crude gas outlet is connected to the annular space for the flow of crude gas that has passed downward through the funnel, downward through the waterbath, upward through the waterbath, and upward through the annular space, the flow of crude gas flowing through the crude gas outlet outside of the pressure wall; the second nozzles are configured and located above the surface of the waterbath for injecting cooling and scrubbing water, the second nozzles being arranged inside the annular space; and the inner wall bounds the free space quench in the radial direction with respect to the central longitudinal axis of the quencher.