Furnace wall, gasification unit and integrated gasification combined cycle, and method of manufacturing furnace wall

Patent metadata

Field	Value
Publication number	US-10954853-B2
Application number	US-201716311295-A
Country	US
Kind code	B2
Filing date	Oct 11, 2017
Priority date	Oct 12, 2016
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

The purpose of the present invention is to provide a furnace wall in which a throat section with a smaller channel diameter than other regions can be formed using all peripheral wall tubes. Provided is a furnace wall comprising: a plurality of peripheral wall tubes (142), which are disposed so as to form a cylindrical shape when aligned in one direction and through the interior of which cooling water flows; and fins (140) that connect neighboring peripheral wall tubes (142) in an airtight manner. In a throat section in which the diameter of a horizontal cross-section of the cylindrical shape is reduced in comparison to other regions, the peripheral wall tubes (142) are disposed so as to be in mutual contact and the fins (140) are disposed on the inner circumferential sides of the cylindrical shapes.

First claim

The invention claimed is:

1. A furnace wall comprising:
a plurality of tubes arrayed in a predetermined direction and defining a cylindrical construction, a coolant flowing inside the tubes; and
a plurality of connections hermetically sealing spaces between the adjacent tubes,
wherein the tubes are disposed in contact with each other at contact areas in a throat section of the cylindrical construction having a horizontal cross-section having a diameter smaller than the diameter of the cross-section of other portions of the cylindrical construction, and some of the connections comprise inner-circumferential-side connections disposed closer to the inner circumferential side of the cylindrical construction than contact areas,
some of the connections in the throat section comprise outer-circumferential-side connections disposed closer to the outer circumferential side of the cylindrical construction than the contact areas,
the outer-circumferential-side connections comprise rod-like members extending in the longitudinal direction of the tubes,
the inner-circumferential-side connections comprise rod-like members extending in the longitudinal direction of the tubes,
the rod-like members of the outer-circumferential-side connections are connected with the respective rod-like members of the inner-circumferential-side connections, the outer-circumferential-side connections and the inner-circumferential-side connections having end portions being folded back, and
the rod-like members of the outer-circumferential-side connections each have at least one cut.

2. A furnace wall comprising:
a plurality of tubes arrayed in a predetermined direction and defining a cylindrical construction, a coolant flowing inside the tubes; and
a plurality of connections hermetically sealing spaces between the adjacent tubes, wherein
the tubes are disposed in contact with each other at contact areas in a throat section of the cylindrical construction having a horizontal cross-section having a diameter smaller than the diameter of the cross-section of other portions of the cylindrical construction, and some of the connections comprise inner-circumferential-side connections disposed closer to the inner circumferential side of the cylindrical construction than contact areas, and
the contact areas of at least some of the tubes have flat portions formed by cutting outer faces of the tubes.

3. The furnace wall according to claim 1 , wherein the centers of the tubes are disposed on a horizontal cross-section of the cylindrical construction at same radial distances from the center of the cylindrical construction in the throat section.

4. A furnace wall comprising:
a plurality of tubes arrayed in a predetermined direction and defining a cylindrical construction, a coolant flowing inside the tubes; and
a plurality of connections hermetically sealing spaces between the adjacent tubes, wherein
the tubes are disposed in contact with each other at contact areas in a throat section of the cylindrical construction having a horizontal cross-section having a diameter smaller than the diameter of the cross-section of other portions of the cylindrical construction, and some of the connections comprise inner-circumferential-side connections disposed closer to the inner circumferential side of the cylindrical construction than contact areas, and
the centers of the tubes are disposed on a horizontal cross-section of the cylindrical construction at different radial distances from the center of the cylindrical construction in the throat section.

5. A gasification unit configured to generate raw syngas by combusting and gasifying carbonaceous feedstock, the gasification unit comprising:
the furnace wall according to claim 1 ,
wherein the raw syngas passes through the interior of the cylindrical construction.

6. An integrated gasification combined cycle comprising:
the gasification unit according to claim 5 configured to generate raw syngas by combusting and gasifying carbonaceous feedstock;
a gas turbine unit configured to be rotationally driven by combusting at least a portion of the raw syngas generated at the gasification unit;
a steam turbine unit configured to be rotationally driven by steam including steam generated at a heat recovery stream generator introducing turbine flue gas discharged from the gas turbine unit; and
a generator linked to the gas turbine unit and the steam turbine unit.

7. A method of manufacturing a furnace wall comprising:
arraying a plurality of tubes in a predetermined direction and defining a cylindrical construction, a coolant flowing inside the tubes; and
disposing a plurality of connections hermetically sealing spaces between the adjacent tubes, wherein
the tubes are disposed in contact with each other at contact areas in a throat section of the cylindrical construction having a horizontal cross-section having a diameter smaller than the diameter of the cross-section of other portions of the cylindrical construction, and the connections are disposed closer to the inner circumferential side of the cylindrical construction than contact areas,
some of the connections in the throat section comprise outer-circumferential-side connections disposed closer to the outer circumferential side of the cylindrical construction than the contact areas,
the outer-circumferential-side connections comprise rod-like members extending in the longitudinal direction of the tubes,
the inner-circumferential-side connections comprise rod-like members extending in the longitudinal direction of the tubes,
the rod-like members of the outer-circumferential-side connections are connected with the respective rod-like members of the inner-circumferential-side connections, the outer-circumferential-side connections and the inner-circumferential-side connections having end portions being folded back, and
the rod-like members of the outer-circumferential-side connections each have at least one cut.

Assignees

• Mitsubishi Hitachi Power Sys
• Mitsubishi Power Ltd

Inventors

• Chuman Fumihiro
• Kitada Masashi
• Toyomaru Makoto

Classifications

• F23M5/08

  Cooling thereof; Tube walls · CPC title

• C10J3/485 Primary

  Entrained flow gasifiers · CPC title

• C10J2300/165

  integrated with a gas turbine or gas motor · CPC title

• F23G2202/101

  with controlled oxidant supply · CPC title

• F22B37/20

  Supporting arrangements, e.g. for securing water-tube sets · CPC title