Burner

Patent metadata

Field	Value
Publication number	US-9546784-B2
Application number	US-67218708-A
Country	US
Kind code	B2
Filing date	Aug 5, 2008
Priority date	Aug 6, 2007
Publication date	Jan 17, 2017
Grant date	Jan 17, 2017

Abstract

The invention relates to a burner, particularly for the gasification of solid carbonaceous materials by partial combustion. The burner comprises a central channel ( 2 ) and at least one coaxial channel ( 6 ). The channels ( 2, 6 ) are defined by concentric walls ( 3, 5 ) having free downstream outer ends profiled to define an annular slit ( 10 ) forming a discharge end of the coaxial channel ( 6 ) and converging towards an adjacent discharge end of the central channel ( 2 ). The burner ( 1 ) is encased by a cooling jacket ( 14 ) and comprises a front face ( 21 ) with double walls spaced by one or more baffles ( 28 ) defining a coolant flow path operatively connected to the cooling jacket ( 14 ). The cooling jacket ( 14 ) has an upstream section ( 14 A) and a transitional section ( 25 ) narrowing down to the front face ( 21 ) having a smaller outer diameter than the upstream cooling jacket section.

First claim

What is claimed is:

1. A burner comprising a central channel and at least one coaxial channel surrounding the central channel, the channels leading from an upstream supply side to a downstream discharge end, the central channel and the coaxial channel being defined by concentric inner and outer walls having free downstream outer ends profiled to define an annular slit forming a discharge end of the coaxial channel and converging towards an adjacent discharge end of the central channel, the burner being encased by a cooling jacket and comprising a double walled front face having an outer diameter, the double walls of the front face being spaced by one or more baffles defining a coolant flow path operatively connected to the cooling jacket wherein the cooling jacket has an upstream section having an outer diameter and transitional section having an outer diameter narrowing down from the outer diameter of the upstream section to the outer diameter of the front face, the outer diameter of the front face being smaller than the outer diameter of the upstream section of the cooling jacket;
wherein the transitional section of the cooling jacket and the upstream part of the cooling jacket are attached to opposite sides of an interposed connection block having openings to allow flow-through through the channels and the coolant flow paths;
wherein the coolant flow path upstream of the connection block comprises a non-spiral flow path; and
wherein the transitional section comprises a non-spiral flow path upstream of the front face and a plurality of baffles defining a spiral flow path downstream of the front face, operatively connected to the coolant flow path defined by the baffles of the front face.

2. A burner according to claim 1 , wherein the outer diameter of the transitional section is at least partly tapered.

3. A burner according to claim 1 , wherein the cooling jacket comprises at least one compartment with at least three parallel baffles defining channel sections concentric with the burners central channel, each baffle being provided with an opening between two facing baffle ends, with parallel partitions each linking a baffle end to a facing baffle end of an adjacent baffle.

4. A burner according to claim 3 , wherein the cross-sectional area of a channel section is smaller than the cross-sectional area of a channel section next in coolant flow direction.

Assignees

• Van Der Ploeg Govert Gerardus Pieter
• Van Schie Henricus Gijsbertus
• Schilder Johannes Gerardus Maria
• Shell Oil Co

Inventors

• Van Der Ploeg Govert Gerardus Pieter
• Van Schie Henricus Gijsbertus
• Schilder Johannes Gerardus Maria

Classifications

• F23D2214/00

  Cooling · CPC title

• F23D2900/00018

  Means for protecting parts of the burner, e.g. ceramic lining outside of the flame tube · CPC title

• C10J2200/09

  Mechanical details of gasifiers not otherwise provided for, e.g. sealing means · CPC title

• C10J2200/152

  Nozzles or lances for introducing gas, liquids or suspensions · CPC title

• F23D1/00 Primary

  Burners for combustion of pulverulent fuel · CPC title