Separable quench ring and distribution channel for a gasification reactor

• US 4,902,303 A
• Filed: 11/10/1988
• Issued: 02/20/1990
• Est. Priority Date: 11/10/1988
• Status: Expired due to Fees

• Current Assignee: Texaco Incorporated (Chevron Corp.)
• Original Assignee: Texaco Incorporated (Chevron Corp.)
• Inventors: Den Bleyker, Alfred L.
• Primary Examiner(s): Woodard, Joye L.
• Application Number:
  US07/269,325
• Time in Patent Office: 467 Days
• Field of Search: 48/69, 48/87, 48/DIG. 2, 55/223, 55/241, 55/244, 55/256, 261/112.1, 261/121.1, 261/17, 422/207
• US Class Current: 48/69
• CPC Class Codes: C10J 2300/1223 by burners
• CPC Class Codes: C10J 3/485 Entrained flow gasifiers
• CPC Class Codes: C10J 3/845 Quench rings
• CPC Class Codes: C10K 1/08 by washing with liquids; Reviving the used wash liquors gas washers B01D
• CPC Class Codes: C10K 1/101 with water only
• CPC Class Codes: F28C 3/06 the heat-exchange media being a liquid and a gas or vapour temperators for cooling steam F22
• CPC Class Codes: F28D 2021/0075 for syngas or cracked gas cooling systems cooling of cracked gas C10G9/002

Abstract

A gasification reactor which includes a shell, having a combustion chamber in which a carbonaceous fuel mix is burned to produce a hot gaseous effluent. A quench chamber within the shell includes a water bath in which the hot effluent is cooled. A refractory lined constricted throat directs hot effluent into a dip tube which guides the effluent into the bath. A multi-segment quench ring supports the refractory throat, and is communicated with a coolant distributing manifold. A discharge port is provided in the quench ring to impinge liquid coolant against the dip tube guide surface. A multi-segment distribution ring segment is removably independent of the quench ring main segment to facilitate separation of the manifold from the quench ring, without removing support to the refractory throat.

Claims

1. In a gasification reactor (10) for combusting a carbonaceous fuel mixture to produce a hot effluent stream comprised primarily of a usable gas, said reactor including:

a reactor shell (11),

a refractory lined combustion chamber (12) in said shell,

a burner (14) extending through said shell into the combustion chamber and communicated to a means for supplying a pressurized carbonaceous fuel mixture, for discharging a flow of the fuel mixture into the combustion chamber, whereby to combust the mixture and form a said hot effluent stream,

means in said shell forming a quench chamber (26) including a liquid bath (21) beneath said combustion chamber (12),

means forming a constricted throat (27) in said shell interconnecting the combustion chamber (12) to said quench chamber (26) for conducting said hot effluent stream, from the combustion chamber to the quench chamber,

a dip tube (29) positioned in said shell (11) defining an effluent guide passage, said dip tube having an inlet positioned adjacent to said constricted throat (27) for guiding said hot effluent stream from said combustion chamber into the liquid bath 21, of the quunch chamber, the improvement therein of

a multi-segment quench ring assembly (36) depending from said shell and positioned in alignment with said constricted throat to receive the hot effluent stream therefrom, including;

a first toroidal ring segment (34) having an annular coolant passage (42) connected to a pressurized liquid supply means, and having an internal rim (33) defining a recessed receptacle, (41)

a second ring segment removably registered in said recessed receptacle, (41) having an internal manifold channel (48) in fluid communication with said annular coolant passage (42) and having at least one means forming a discharge port (53) in liquid communication with said internal manifold channel (48) and directed onto said dip tube and

fastening means (57) removably registering said second ring segment in the recessed receptacle (41) of said first toroidal ring segment.

2. In the apparatus as defined in claim 1, including a thermally resistant gasket (56) compressed in said recessed receptacle, between the respective first and second ring segments.

3. In the apparatus as defined in claim 2, wherein said thermally resistant gasket (56) is formed of an asbestos composition.

4. In the apparatus as defined in claim 1, wherein said second ring segment (41) is slidably registered within said recessed receptacle.

5. In the apparatus as defined in claim 1, wherein said dip tube (29) supportably depends from said second ring segment.

6. In the apparatus as defined in claim 1, wherein said internal rim (33) defining said recessed receptacle is substantially cylindrical in shape.