KR20110001963A - Cooling chamber assembly for a gasifier - Google Patents

Abstract

PURPOSE: A cooling chamber assembly for a gasifier is provided to reduce the mixing of liquid matters into synthetic gas which is directed to an exit path through an annular passage. CONSTITUTION: A gasifier(10) comprises a combustion chamber(14) which burns a combustible fuel to produce synthetic gas and particulate solid residues and a cooling chamber(16) which is arranged at the downstream of the combustion chamber and includes liquid coolant(32). The synthetic gas is directed from the combustion chamber through an immersion tube(38) to the cooling chamber and touched with the liquid coolant so that frozen synthetic gas is created. An asymmetrical or symmetrical liquid separator(54) is arranged near an exit path(52) of the cooling chamber.

Description

Cooling chamber assembly for gasifier {COOLING CHAMBER ASSEMBLY FOR A GASIFIER}

FIELD OF THE INVENTION The present invention relates generally to gasifiers and, more particularly, to cooling chamber assemblies for gasifiers.

In a conventional coal gasification process of burning particulate carbonaceous fuels such as coal, coke or carbonaceous gas, these processes are carried out at relatively high temperatures and high pressures in the combustion chamber. When the injected fuel is combusted or partially combusted in the combustion chamber, the effluent is discharged through a port at the bottom of the combustion chamber to a cooling chamber disposed downstream of the combustion chamber. The cooling chamber contains a liquid coolant such as water. The effluent from the combustion chamber contacts the liquid coolant in the cooling chamber, which lowers the temperature of the effluent. In certain applications, the cooling chamber may be used as a quenching chamber for syngas. In certain other applications, the cooling chamber may be used as a scrubber to remove entrained solids from the generated syngas. In certain applications, the gasifier may have both a quenching system and a scrubber.

If the fuel is solid, such as coal or coke, the gasifier maintains the solid portion of the effluent in the form of ash in the liquid pool of the cooling chamber and then discharges it as a slag slurry. The gaseous components of the effluent are withdrawn from the cooling chamber for further processing. However, when passing through the cooling chamber the gas component will have a significant amount of liquid coolant. Very small amounts of liquid incorporated into the effluent gas are not considered harmful to the overall process. However, excess liquid conveyed from the cooling chamber into the downstream equipment is known to cause operational problems.

There is a need for an improved cooling chamber assembly for quenching and scrubber applications that is configured to substantially remove entrained liquid content from the effluent gas generated in the gasifier.

According to one exemplary embodiment of the present invention, the gasifier includes a combustion chamber that combusts combustible fuel to produce syngas and particulate solid residue. The cooling chamber with the liquid coolant is arranged downstream of the combustion chamber. A dip tube is arranged that connects the combustion chamber to the cooling chamber. The syngas is directed from the combustion chamber through the dip tube into the cooling chamber and in contact with the liquid coolant to produce a cooled syngas. An asymmetrical or symmetrical liquid separator is arranged in proximity to the exit path of the cooling chamber and is configured to remove entrained liquid content from the cooled syngas directed to the exit path through the annular passageway.

According to another exemplary embodiment of the present invention, the fin-shaped asymmetric or symmetric liquid separator is disposed proximate to the outlet path of the cooling chamber and incorporates liquid inclusions incorporated from the cooled syngas directed to the outlet path through the annular passageway. Configured to be removed.

According to another exemplary embodiment of the present invention, an asymmetrical or symmetrical faceted or round liquid separator is disposed proximate the outlet path of the cooling chamber and directed through the annular passage to the outlet path. And to incorporate entrained liquid content from the cooled syngas.

BRIEF DESCRIPTION OF THE DRAWINGS The above features, aspects, and advantages of the present invention, as well as other features, aspects, and advantages, will be better understood upon reading the following detailed description with reference to the accompanying drawings, in which like reference characters indicate like parts throughout the figures.

1 is a schematic diagram of a gasifier having an exemplary cooling chamber with a liquid separator in accordance with an exemplary embodiment of the present invention;
2 is a schematic diagram of a liquid separator according to an exemplary embodiment of the present invention;
3 is a schematic diagram showing a portion of a cooling chamber having a liquid separator according to an exemplary embodiment of the present invention;
4 is a schematic diagram showing a portion of a cooling chamber having a liquid separator according to an exemplary embodiment of the present invention;
5 is a schematic diagram showing a portion of a cooling chamber having a liquid separator according to an exemplary embodiment of the present invention;
6 is a schematic diagram showing a portion of a cooling chamber having a liquid separator according to an exemplary embodiment of the present invention;
7 is a schematic diagram of a pin device in accordance with an exemplary embodiment of the present invention;
8 is a schematic diagram of a pin device according to an exemplary embodiment of the present invention;
9 is a schematic diagram of a pin device in accordance with an exemplary embodiment of the present invention;
10 is a schematic diagram showing a portion of a cooling chamber having a liquid separator having a single row of fin devices in accordance with an exemplary embodiment of the present invention;
11 is a schematic diagram showing a portion of a cooling chamber having a liquid separator having multiple rows of fin devices in accordance with an exemplary embodiment of the present invention;
12 is a schematic diagram showing a portion of a cooling chamber having a liquid separator having a fin device inclined along a row, in accordance with an exemplary embodiment of the present invention;
13 is a schematic view of a liquid separator having a zig-zag arranged pin device according to an exemplary embodiment of the present invention;
14 is a schematic diagram of a scrubber having a liquid separator according to an exemplary embodiment of the present invention;
15 is a schematic representation of a faceted or round liquid separator in accordance with an exemplary embodiment of the present invention;
16 is a schematic view of a faceted liquid separator in accordance with an exemplary embodiment of the present invention;
17 is a schematic representation of a round liquid separator in accordance with an exemplary embodiment of the present invention.

According to an exemplary embodiment described herein, a gasifier is described having a cooling chamber assembly configured to lower the temperature of syngas downstream of the combustion chamber. The gasifier includes a cooling chamber containing a liquid coolant disposed downstream of the combustion chamber. Syngas generated from the combustion chamber is directed to the cooling chamber via an immersion tube and in contact with the liquid coolant to produce cooled syngas. The gasifier also includes an immersion tube that connects the combustion chamber to the cooling chamber and directs the synthesis gas from the combustion chamber to the cooling chamber to contact the liquid coolant to produce cooled syngas. A draft tube is arranged which surrounds the dip tube and forms an annular passage between the dip tube. The liquid separator is disposed proximate to the outlet path of the cooling chamber and is configured to remove entrained liquid content from the cooled syngas that is directed to the outlet path through the annular passageway. In one embodiment, the liquid separator is a symmetrical liquid separator. In another embodiment, the liquid separator is an asymmetric liquid separator. In some embodiments, cooling chambers are used for quenching applications. In certain other embodiments, the cooling chamber is used for scrubbing applications. The cooled syngas is directed through the annular passageway and impinges on the liquid separator so that entrained liquid content is removed from the cooled syngas before the cooled syngas is directed through the outlet path. In this specification, the configuration used to perform the removal of the entrained liquid is referred to as "liquid separator". The liquid separator may be a single component or assembly. In some embodiments, the liquid separator includes a finned deflector connected to the dip tube. In another embodiment, the liquid separator comprises a conical facet or round separator. By providing an exemplary liquid separator, the incorporation of liquid inclusions in the syngas that is directed to the downstream component through the outlet path can be significantly reduced. Specific embodiments are described in more detail below with reference to FIGS. 1 to 15.

Referring to FIG. 1, an exemplary gasifier 10 is shown. The gasifier 10 includes an outer shell 12 having a combustion chamber 14 at the top and a cooling chamber 16 at the bottom. The combustion chamber 14 is provided with a refractory wall 18 that can withstand normal operating temperatures. Burner 20 is connected to fuel source 24 via path 22. A fuel stream comprising powdered carbonaceous fuel, such as coal, coke, or the like is fed into the combustion chamber 12 via a burner 20 that is removably disposed on the top wall of the combustion chamber 14. Burner 20 is also connected via path 26 to a combustion support gas source 28 configured to supply gas such as oxygen or air.

Combustible fuel is combusted in combustion chamber 14 to produce an effluent comprising syngas and particulate solid residue. The hot effluent is fed from the combustion chamber 14 to the cooling chamber 16 provided at the lower end of the outer shell 12. The cooling chamber 16 is connected to a pressurized source 30 and supplies a liquid coolant 32, preferably a pool of water, to the cooling chamber 16. The height of the liquid coolant in the cooling chamber 16 is maintained at a predetermined height to ensure efficient operation depending on the condition of the effluent supplied from the combustion chamber 14 into the cooling chamber 16. At the lower end of the outer shell 12 of the gasifier, a discharge port 34 is provided in which water and fine particles are removed from the cooling chamber 16 in the form of a slurry.

In the illustrated embodiment, the constriction 36 of the combustion chamber 14 is connected to the cooling chamber 16 via an immersion tube 38. The hot effluent is fed from the combustion chamber 14 to the liquid coolant 32 in the cooling chamber 16 via the passage 40 of the dip tube 38. The ring 42 is disposed proximate to the dip tube 38 and connected to the pressurization source 30 to maintain the inner wall of the dip tube in a wet state that best accommodates the downward flow of effluent. The lower end 44 of the dip tube 38 may be serrated and positioned below the surface of the liquid coolant 32 to efficiently achieve cooling of the effluent.

The draft tube 46 is disposed in the cooling chamber 16. The draft tube 46 includes an elongated cylinder 48 fixedly supported by the shell 12 of the gasifier. The lower side of the draft tube 46 is immersed in the liquid coolant 32. The cylinder 48 is terminated with its upper end adjacent to the ring 42 but spaced apart from the ring 42. In addition, the cylinder 48 is spaced apart from the dip tube 38 to form an annular passage 50. The syngas comes into contact with the liquid coolant 32 to produce cooled syngas. The cooled syngas then passes through the annular passage 50 to the exit path 52 of the cooling chamber 16.

As mentioned above, the gaseous components of the effluent are withdrawn from the cooling chamber 16 via the outlet path 52 for further processing. In the embodiment shown, the cooling chamber 16 is a quenching chamber. In certain other embodiments, the cooling chamber is a scrubber configured to remove entrained solids from the syngas. However, it is conventionally known that the gas component has a significant amount of liquid coolant when passing through the quench chamber. Excess liquid transported from the cooling chamber into the downstream equipment is known to cause operational problems.

In the illustrated embodiment, the liquid separator 54 is disposed proximate to the outlet path 52 of the cooling chamber 16. In the present specification, it should be noted that in the illustrated embodiment, the liquid separator 54 is a symmetrical liquid separator. The liquid separator 54 includes a current transformer 56 connected to the dip tube 38 and configured to redirect the flow of syngas cooled down from the annular passage 50. In the illustrated embodiment, the current transformer 56 may be spherical. In other embodiments, other shapes of current transformers may be considered. The current transformer 56 is provided with a plurality of fins 58. The cooled syngas redirected by the current transformer 56 is forced to flow through a series of blockages, or fins 58. As a result, the flow momentum of the syngas is dissipated and the useful flow portion is used more efficiently. The flow of syngas is more evenly distributed at the outlet of the current transformer 56. In a typical quenching cooling process, the cooled gas stream contains an amount of liquid coolant. However, as the cooled gas stream impinges the current transformer 56 and fin 58, the flow rate of the syngas is reduced, so that entrained liquid content is removed from the syngas. The current transformer 56 also prevents the liquid coolant 32 from splashing into the outlet path 52 of the cooling chamber 16.

In the illustrated embodiment, the current transformer 56 may include a plurality of holes 57 that direct some of the cooled syngas to an upstream region of the current transformer 56 in the cooling chamber 16. This improves the syngas flow uniformity and promotes the reduction of the incorporation of liquid inclusions in the syngas. In certain embodiments, current transformer 56 may employ holes 56 and may not include pins 58. In the present specification, it should be noted that the illustrated gasifier is an exemplary embodiment and other configurations of the gasifier are also contemplated. It is to be noted herein that the term "cooling chamber" refers to a quenching system or scrubber, regardless of the gasifier configuration. Another embodiment of a liquid separator is described below with reference to the following figures.

Referring to FIG. 2, a liquid separator 54 is shown. As mentioned above, the liquid separator 54 is disposed proximate to the outlet path of the cooling chamber. The liquid separator 54 includes a spherical current transformer 56 connected to the dip tube and configured to redirect the flow of cooled syngas downward from the annular passageway between the dip tube and the draft tube. A plurality of pins 58 are disposed on the current transformer 56. In the embodiment shown, ten fins 58 are provided in the current transformer 56. The pin 58 is disposed along the circular direction 60. As the cooled gas stream impinges upon the current transformer 56 and fins 58, the momentum of the flow is dissipated and the flow rate is reduced to remove entrained liquid content from the syngas.

Referring to FIG. 3, a portion of the cooling chamber 16 is shown. The liquid separator 62 is disposed proximate to the outlet path 52 of the cooling chamber 16. In the illustrated embodiment, the liquid separator 62 is a symmetric liquid separator. The liquid separator 62 is connected to the dip tube 38 and is configured to redirect the flow of the cooled syngas downward from the annular passage 50 between the dip tube 38 and the draft tube 46. ).

4, a portion of the cooling chamber 16 is shown. The liquid separator 66 is disposed proximate to the outlet path 52 of the cooling chamber 16. In the illustrated embodiment, the liquid separator 66 is a symmetric liquid separator. The liquid separator 66 is connected to the dip tube 38 and is configured to redirect the flow of the cooled syngas downward from the annular passage 50 between the dip tube 38 and the draft tube 46. ).

5, a portion of the cooling chamber 16 is shown. The liquid separator 67 is arranged in proximity to the outlet path 52 of the cooling chamber 16. In the illustrated embodiment, the liquid separator 67 is an asymmetric liquid separator. The liquid separator 67 is connected to the dip tube 38 and is configured to redirect the flow of cooled syngas downward from the annular passage 50 between the dip tube 38 and the draft tube 46. It includes.

Referring to FIG. 6, a portion of the cooling chamber 16 is shown. The liquid separator 70 is arranged in proximity to the outlet path 52 of the cooling chamber 16. The liquid separator 70 is a symmetrical liquid separator. The liquid separator 70 is connected to the dip tube 38 and is configured to redirect the flow of the cooled syngas downward from the annular passage 50 between the dip tube 38 and the draft tube 46. ).

Referring to FIG. 7, there are shown a plurality of pins 74 provided in a current transformer (not shown). In the illustrated embodiment, the pins 74 comprise straight pins and are arranged in a polygonal shape.

Referring to FIG. 8, there are shown a plurality of pins 76 provided in a current transformer (not shown). In the illustrated embodiment, the pins 76 include curved pins and are arranged in a circular shape.

9, a plurality of pins 78 provided in a current transformer (not shown) is shown. In the illustrated embodiment, one set of pins 78 may be disposed along the radial direction 80 and the other set of pins 78 may be disposed along the tangential direction 82.

Referring to FIG. 10, a portion of a cooling chamber 16 according to the embodiment of FIG. 1 is shown. The liquid separator 54 is connected to the dip tube 38 and is configured to redirect the flow of the cooled syngas downward from the annular passage 50 between the dip tube 38 and the draft tube 46. ). Current transformer 56 is provided with a plurality of pins 58. In the embodiment shown, the pins 58 are arranged along a single row.

Referring to FIG. 11, a portion of the cooling chamber 16 according to the embodiment of FIG. 1 is shown. In the illustrated embodiment, the plurality of fins 58 are provided in the current transformer 56 and are arranged along multiple rows.

Referring to FIG. 12, a portion of the cooling chamber 16 according to the embodiment of FIG. 1 is shown. In the illustrated embodiment, the plurality of fins 58 are provided in the current transformer 56 and are inclined along the row.

Referring to FIG. 13, a liquid separator 84 is shown. In the illustrated embodiment, the liquid separator 84 includes two sets of fins 86, 88 provided in the current transformer 90. Two sets of pins 86 and 88 are arranged along two rows along the circumferential direction, respectively. In one embodiment, a set of pins 86 along one row are zigzag with respect to a set of pins 88 in another row.

Referring to FIG. 14, an exemplary cooling chamber 85 is shown. In the embodiment shown, the cooling chamber 85 is a scrubber. The draft tube 87 is disposed to surround the dip tube 89 in the cooling chamber 85. An annular passage 93 is formed between the draft tube 87 and the dip tube 89. The syngas is cooled in contact with the liquid coolant 91 to remove solid particles mixed from the syngas.

In the embodiment shown, the liquid separator 95 is disposed proximate the outlet of the annular passageway 93. The liquid separator 95 includes a current transformer 97 connected to the dip tube 89 and configured to redirect the flow of cooled syngas downward from the annular passageway 93. The current transformer 97 may be provided with a plurality of pins (not shown). The cooled syngas redirected by the current transformer 97 may be forced to flow through a series of fins. As a result, the flow momentum of the syngas is dissipated and the useful flow portion is used more efficiently. Thereafter, the syngas flows upward through the space 99 between the draft tube 87 and the wall 101 of the cooling chamber 85 and is discharged from the upper side.

According to the embodiments described herein, by providing a current transformer, fins or a combination thereof, it is possible to reduce the flow rate of the cooled syngas and also increase the gas flow path distance between the liquid coolant and the outlet path of the cooling chamber. . This increases the residence time of the gas and liquid coolant mixture in the cooling chamber to improve the removal of entrained liquid inclusions from the cooled syngas. In general, the current transformer and fins can form a tortuous path to the flow of syngas in the cooling chamber.

1 to 14, it should be noted that the shape of the current transformer may be changed depending on the application. In addition, the number, shape and arrangement of the pins can also be changed and optimized depending on the application. Various modifications and combinations of the various embodiments described above may also be considered.

Referring to FIG. 15, a cooling chamber 92 is shown. In the illustrated embodiment, the draft tube 94 is positioned surrounding the dip tube 96 in the cooling chamber 92. The cooled syngas passes through the annular passage formed between the immersion tube 96 and the draft tube 94 to the outlet path 100 of the cooling chamber 92. The liquid separator 102 is disposed close to the outlet path 100 and surrounds the dip tube 96 and the draft tube 94 in the cooling chamber 92. The syngas is cooled in contact with the liquid coolant 104 in the cooling chamber 92. Liquid separator 102 may be a faceted or round liquid separator. In the illustrated embodiment, the liquid separator 102 is a conical liquid separator. In one embodiment, the liquid separator 102 may be an asymmetric liquid separator. In other embodiments, liquid separator 102 may be a symmetric liquid separator. The liquid separator is described in more detail with reference to the following figures.

Referring to FIG. 16, a liquid separator 102 according to the embodiment shown in FIG. 15 is shown. In the illustrated embodiment, the liquid separator 102 is a symmetric faceted liquid separator. The illustrated liquid separator 102 includes a plurality of splash plates 105 and a plurality of V-shaped baffle elements 106 provided on the splash plate 105. The baffle elements 106 are arranged in a converging pattern, with a channel 108 formed between the baffle elements 106. The baffle element 106 limits the portion of the flow along the radial direction within the liquid separator 102. Pipe 110 is connected to each channel 108. The cooled syngas exiting the annular passageway between the dip tube and the draft tube is directed to pass through the liquid separator 102. The cooled syngas is directed to the inner wall of the splash plate 105 due to the inertial forces. The baffle element 106 is configured to separate the liquid contents from the cooled syngas stream. In other words, because of the converging flow portion in the liquid separator 102, the syngas flow is layered due to the density difference between the liquid and the gas. The gas phase is displaced inward along the radial direction in the liquid separator 102 due to flow stratification. Liquid inclusions tend to adhere onto the baffle element 106. The entrained liquid content that has been removed is directed into the cooling chamber after exiting into the pipe 110 via the channel 108. In some embodiments, the baffle element 106 may be provided perpendicular to the surface of the splash plate 105. In certain other embodiments, the baffle element 106 may be disposed at an elevation with respect to the surface of the splash plate.

According to the embodiments described herein, by providing the splash plate 105 and the baffle element 106, the cooled syngas flow rate is reduced, and also the gas flow path distance between the liquid coolant and the exit path of the cooling chamber is increased. You can. This increases the residence time of the gas and liquid coolant mixture in the cooling chamber to improve the removal of entrained liquid inclusions from the cooled syngas. The amount of liquid inclusions incorporated in the syngas exiting the liquid separator 102 is reduced when the radial velocity is less than the axial flow velocity of the syngas. In general, splash plate 105 and baffle element 106 may form a meandering path to the flow of syngas in the cooling chamber. In addition, the liquid separator prevents reincorporation of liquid inclusions in the syngas.

Referring to FIG. 17, a round liquid separator 112 is shown. In the illustrated embodiment, the liquid separator 112 is an asymmetric liquid separator. The illustrated liquid separator 112 includes a plurality of V-shaped baffle elements 114. The baffle elements 114 are arranged in a converging pattern and a channel 116 is formed between the baffle elements 114. It should be noted herein that the baffle element 114 is not uniformly provided in the rounded liquid separator 112. The baffle element 114 restricts the flow portion along the radial direction within the liquid separator 112. Pipe 118 is connected to each channel 116.

The mixing mitigation mechanisms shown in FIGS. 1 to 17 may be employed separately or in combination with each other. Moreover, as can be seen, the relative size, shape and geometry of the incorporation mitigation mechanism can be varied. Although certain embodiments employ symmetrical structures in liquid separators, it should be noted that asymmetrical structures may also be employed in certain applications herein. For example, by removing one or more fins from a given arrangement, cost savings can be achieved while still maintaining the functionality of the liquid separator. Incorporation abatement mechanisms may be employed in the cooling chamber at the time of initial manufacture, or incorporation abatement mechanisms may be retrofitted into existing cooling units and / or scrubbers. In addition, incorporation mitigation mechanisms can be adjusted based on operating parameters such as type of carbonaceous fuel, system efficiency, system load, or environmental conditions, in particular to achieve improved system operability and control.

The foregoing description is directed to those skilled in the art, including examples of disclosing the invention including the best mode, and also making and using any device or system and performing any interwoven method. We used an example to make it work. The patentable scope of the invention is defined in the claims, and may include other examples made by those skilled in the art. These other examples are considered to be within the scope of the claims if they include structural elements with different literal representations of the claims or if the literal representations of the claims contain slightly different equivalent structural elements. do.

Although only certain features of the invention have been shown and described herein, many variations and modifications will be made by those skilled in the art. Accordingly, the appended claims are intended to cover all such variations and modifications as fall within the true spirit of the invention.

10 gasifier 14 combustion chamber
16: cooling chamber 32: liquid coolant
38: dipping tube 46: draft tube
50: annular passage 52: exit path
54 liquid separator 56 current transformer
58: pin 106, 114: baffle element
108: channel

Claims (10)

In the gasifier 10,
A combustion chamber 14 for combusting combustible materials to produce syngas;
A cooling chamber 16 having a liquid coolant 32 and disposed downstream of said combustion chamber 14,
Connect the combustion chamber 14 to the cooling chamber 16 and contact the liquid coolant 32 to direct the syngas from the combustion chamber 14 to the cooling chamber 16 to produce a cooled syngas. Configured dip tube 38,
A draft tube 46 disposed to surround the dip tube 38 to form an annular passage 50 between the dip tube 38;
An asymmetric or disposed a close proximity to the outlet path 52 of the cooling chamber 16 and configured to remove entrained liquid content from the cooled syngas directed to the outlet path 52 through the annular passage 50. Comprising a symmetrical liquid separator 54
Gasifier. The method of claim 1,
The cooling chamber 16 comprises a quenching chamber for the gasifier 10
Gasifier. The method of claim 1,
The cooling chamber 16 includes a scrubber
Gasifier. The method of claim 1,
The asymmetrical or symmetrical liquid separator 54 includes a current transformer 56 connected to the dip tube 38 and configured to redirect the flow of cooled syngas from the annular passage 50.
Gasifier. The method of claim 4, wherein
The asymmetrical or symmetrical liquid separator 54 is provided with the plurality of current transformers 56 and configured to remove entrained liquid content from the cooled syngas directed to the outlet path 52 through the annular passage 50. Including pin 58
Gasifier. The method of claim 1,
The asymmetric or symmetric liquid separator 54 comprises a conical facet or round separator.
Gasifier. The method according to claim 6,
The asymmetrical or symmetrical liquid separator 54 is provided in the conical faceted or round separator to remove entrained liquid content from the cooled syngas that is directed through the annular passageway 50 to the outlet path 52. A plurality of baffle elements 106, 114 configured to
Gasifier. The method of claim 7, wherein
The asymmetrical or symmetrical liquid separator 54 includes a channel 108 between the baffle elements 106 and 114 adjacent to each other, the channel 108 being configured to discharge the removed entrained liquid.
Gasifier. In the gasifier 10,
A combustion chamber 14 for combusting combustible materials to produce syngas;
A cooling chamber 16 having a liquid coolant and disposed downstream of said combustion chamber 14;
An immersion tube connected to the combustion chamber 14 to the cooling chamber 16 and configured to direct syngas from the combustion chamber 14 to the cooling chamber 16 to contact the liquid coolant to produce a cooled syngas. 38,
A draft tube 46 disposed to surround the dip tube 38 to form an annular passage 50 between the dip tube 38;
Fin-shaped disposed near the outlet path 52 of the cooling chamber 16 and configured to remove entrained liquid content from the cooled syngas directed through the annular passage 50 to the outlet path 52. Comprising an asymmetric or symmetric liquid separator 54
Gasifier. In the gasifier 10,
A combustion chamber 14 for combusting combustible materials to produce syngas;
A cooling chamber 16 having a liquid coolant and disposed downstream of said combustion chamber 14;
An immersion tube connected to the combustion chamber 14 to the cooling chamber 16 and configured to direct syngas from the combustion chamber 14 to the cooling chamber 16 to contact the liquid coolant to produce a cooled syngas. 38,
A draft tube 46 disposed to surround the dip tube 38 to form an annular passage 50 between the dip tube 38;
An asymmetric or disposed a close proximity to the outlet path 52 of the cooling chamber 16 and configured to remove entrained liquid content from the cooled syngas directed to the outlet path 52 through the annular passage 50. Comprising a symmetric faceted or round liquid separator 54
Gasifier.

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