JP5702554B2 - Cooling chamber assembly for gasifier - Google Patents

Description

  The present invention relates generally to gasifiers and, more particularly, to a cooling chamber assembly for a gasifier.

  A typical coal gasification process combusts granular carbonaceous fuel such as coal or coke or carbonaceous gas, and the process is carried out at a relatively high temperature and pressure in the combustion chamber. When the fuel to be injected burns or partially burns in the combustion chamber, the waste product passes through the port or lower end of the combustion chamber and is discharged into a cooling chamber disposed downstream of the combustion chamber. The cooling chamber contains a liquid coolant such as water. Waste from the combustion chamber comes into contact with the liquid coolant in the cooling chamber so that the temperature of the waste is lowered. In certain applications, the cooling chamber can be used as a quench chamber for syngas. In other specific applications, the cooling chamber can be used as a scrubber to remove entrained solids from the generated syngas. In certain applications, the gasifier can include both a quench system and a washer.

  When the fuel is a solid such as coal or coke, the gasifier configuration allows the solid portion of the ash form of the waste to be retained in the liquid pool of the cooling chamber and then discharged as a slag slurry. . The gaseous component of the waste product is discharged from the cooling chamber for further processing. However, the gaseous component as it passes through the cooling chamber carries with it a significant amount of liquid coolant. The minimum amount of liquid entrained in the effluent gas is not considered undesirable for the entire process. However, excess liquid carried from the cooling chamber to downstream equipment has been found to cause operational problems.

  There is a need for improved cooling chamber assemblies for both quench applications and scrubber applications that are configured to remove significant amounts of entrained liquid content from waste gas generated in the gasifier.

US Pat. No. 7,028,995

  According to an exemplary embodiment of the present invention, the gasifier includes a combustion chamber that burns combustible fuel to generate syngas and particulate solid residues. A cooling chamber with liquid coolant is disposed downstream of the combustion chamber. A dip tube is disposed coupling the combustion chamber to the cooling chamber. The syngas is sent from the combustion chamber to the cooling chamber via the dip tube and is brought into contact with the liquid coolant to generate the cooled syngas. An asymmetric or symmetric liquid separator is disposed proximate to the cooling chamber outlet passage and is configured to remove entrained liquid inclusions from the cooled syngas routed through the annular passage to the outlet passage.

  According to another exemplary embodiment of the present invention, a finned asymmetric or symmetric liquid separator is disposed proximate to the cooling chamber outlet passage and from a cooling syngas routed through the annular passage to the outlet passage. Configured to remove entrained liquid inclusions.

  According to another exemplary embodiment of the present invention, an asymmetric or symmetric facet or circular liquid separator is positioned proximate to the outlet passage of the cooling chamber and is fed through the annular passage to the outlet passage. It is configured to remove entrained liquid content from the syngas.

1 is a diagram of a gasifier having an exemplary cooling chamber with a liquid separator according to an exemplary embodiment of the present invention. FIG. 1 is a diagram of a liquid separator according to an exemplary embodiment of the present invention. 1 is a diagram of a portion of a cooling chamber having a liquid separator according to an exemplary embodiment of the present invention. 1 is a diagram of a portion of a cooling chamber having a liquid separator according to an exemplary embodiment of the present invention. 1 is a diagram of a portion of a cooling chamber having a liquid separator according to an exemplary embodiment of the present invention. 1 is a diagram of a portion of a cooling chamber having a liquid separator according to an exemplary embodiment of the present invention. FIG. 3 is a diagram of a fin configuration according to an exemplary embodiment of the present invention. FIG. 3 is a diagram of a fin configuration according to an exemplary embodiment of the present invention. FIG. 3 is a diagram of a fin configuration according to an exemplary embodiment of the present invention. 1 is a diagram of a portion of a cooling chamber having a liquid separator with a single row fin configuration according to an exemplary embodiment of the present invention. FIG. 1 is a diagram of a portion of a cooling chamber having a liquid separator with multiple rows of fin configurations according to an exemplary embodiment of the present invention. FIG. 4 is a diagram of a portion of a cooling chamber having a liquid separator with an inclined fin configuration along one row according to an exemplary embodiment of the present invention. FIG. 3 is a diagram of a portion of a cooling chamber having a liquid separator with alternating fin configurations according to an exemplary embodiment of the present invention. 1 is a diagram of a washer having a liquid separator according to an exemplary embodiment of the present invention. 1 is a diagram of a faceted or circular liquid separator according to an exemplary embodiment of the present invention. 1 is a diagram of a faceted liquid separator according to an exemplary embodiment of the present invention. 1 is a diagram of a circular liquid separator according to an exemplary embodiment of the present invention.

  These and other features, aspects and advantages of the present invention will become better understood when the following detailed description is read with reference to the accompanying drawings in which like reference characters represent like parts throughout the drawings. I will.

  According to exemplary embodiments disclosed herein, a gasifier having a cooling chamber assembly configured to reduce the temperature of the syngas downstream of the combustion chamber is disclosed. The gasifier includes a cooling chamber that contains liquid coolant disposed downstream of the combustion chamber. The syngas generated from the combustion chamber is sent to the cooling chamber via the dip tube, and contacts the liquid coolant to generate the cooled syngas. The gasifier also includes a dip tube configured to couple the combustion chamber to the cooling chamber and to send syngas directly from the combustion chamber to the cooling chamber to contact the liquid coolant to produce the cooled syngas. A draft tube is disposed surrounding the dip tube and defines an annular passage therebetween. A liquid separator is disposed proximate to the cooling chamber outlet passage and is configured to remove entrained liquid inclusions from the cooled syngas passing through the annular passage to the outlet passage. In one embodiment, the liquid separator is a symmetric liquid separator. In another embodiment, the liquid separator is an asymmetric liquid separator. In some embodiments, the cooling chamber is used for quench applications. In other specific embodiments, the cooling chamber is used for cleaning applications. After the cooled syngas is routed through the annular passage and impinges on the liquid separator to remove entrained liquid content from the cooled syngas, the cooled syngas is routed through the outlet passage. The feature used to achieve entrained liquid removal is referred to herein as a “liquid separator”. The liquid separator can be a single component or assembly. In some embodiments, the liquid separator includes a finned deflector coupled to the dip tube. In other embodiments, the liquid separator includes a conical facet or a circular separator. By providing an exemplary liquid separator, entrainment of liquid inclusions in the syngas sent through the outlet passage to the downstream component is significantly reduced. Specific embodiments are discussed in detail below with reference to FIGS.

  With reference to FIG. 1, an exemplary gasifier 10 is disclosed. The gasifier 10 includes an outer shell 12 that houses the combustion chamber 14 at the upper end and a cooling chamber 16 at the lower end. The combustion chamber 14 includes a refractory wall 18 that can withstand normal operating temperatures. The burner 20 is coupled to a fuel source 24 via a passage 22. A fuel stream containing finely divided carbonaceous fuel, such as coal, coke, or the like, is supplied into the combustion chamber 14 via a burner 20 that is removably disposed on the upper wall portion of the combustion chamber 14.

  Combustible fuel is combusted in the combustion chamber 14 to generate waste containing syngas and particulate solid residues. Hot waste products are fed from the combustion chamber 14 to a cooling chamber 16 provided at the lower end of the shell 12. The cooling chamber 16 is coupled to the pressurized source 30 and is configured to supply a pool of liquid coolant 32 (preferably water) to the cooling chamber 16. The level of the liquid coolant in the cooling chamber 16 is maintained at a required height so as to ensure an efficient operation according to the state of the waste delivered from the combustion chamber 14 to the cooling chamber 16. At the lower end of the gasifier shell 12, a discharge port is provided, through which water and particulates are removed from the cooling chamber 16 in the form of a slurry.

  In the illustrated embodiment, the constricted portion 36 of the combustion chamber 14 is coupled to the cooling chamber 16 via a dip tube 38. The high temperature waste is fed from the combustion chamber 14 to the liquid coolant 32 in the cooling chamber 16 through the passage 40 of the dip tube 38. The ring 42 is placed in close proximity to the dip tube 38 and coupled to the pressure source 30 to keep the dip tube inner wall moist and optimally accommodate the waste downflow. The lower end 44 of the dip tube 38 is serrated and positioned below the surface of the liquid coolant 32 to efficiently achieve cooling of the waste.

  The draft tube 46 is positioned in the cooling chamber 16. The draft tube 46 includes an elongated cylindrical body that is fixedly supported within the gasifier shell 12. The lower part of the draft tube 46 is immersed in the liquid coolant 32. Cylindrical body 48 terminates adjacent to ring 42 at its upper end, but is spaced from the ring. The cylindrical body 48 is also spaced from the dip tube 38 and defines an annular passage 50. The syngas comes into contact with the liquid coolant 32 and generates cooled syngas. The cooled syngas then moves through the annular passage 50 toward the outlet passage 52 of the cooling chamber 16.

  As described above, the gaseous components of the waste are discharged from the cooling chamber 16 via the outlet passage 52 and further processed. In the illustrated embodiment, the cooling chamber 16 is a quench chamber. In another particular embodiment, the cooling chamber is a washer configured to remove entrained solids from the syngas. However, it is conventionally known that the gaseous component as it passes through the quench chamber carries a significant amount of liquid coolant with it. Excess liquid that is carried from the cooling chamber to downstream equipment has been found to cause operational problems.

  In the illustrated embodiment, the liquid separator 54 is disposed proximate to the outlet passage 52 of the cooling chamber 16. Note that in the illustrated embodiment herein, the liquid separator 54 is a symmetric liquid separator. The liquid separator 54 is coupled to the dip tube 38 and includes a deflector 56 configured to redirect the flow of the cooled syngas from the annular passage 50 in a downward direction. In the illustrated embodiment, the deflector 56 can be spherical. In other embodiments, other shaped deflectors are also envisioned. The deflector 56 is provided with a plurality of fins 58. The cooled syngas that is redirected by the deflector 56 is forced to pass through a series of obstructions or fins 58. The syngas flow is more evenly distributed at the outlet of the deflector 56. During normal quench cooling, the cooling gas stream will carry a certain amount of liquid coolant with it. However, when the cooling gas stream impinges on the deflector 56 and the fins 58, the syngas flow rate decreases and entrained liquid content is removed from the syngas. The deflector 56 also prevents the liquid coolant 32 from splashing into the exit passage of the cooling chamber 16.

  In the illustrated embodiment, the deflector 56 can include a plurality of holes 57 for delivering a portion of the cooled syngas to the upstream region of the deflector 56 in the cooling chamber 16. This improves the uniformity of the syngas flow and further reduces the entrainment of liquid inclusions in the syngas. In certain embodiments, the deflector 56 may utilize the holes 56 and may not have the fins 58. It should be noted herein that the gasifier shown is an exemplary embodiment and other configurations of the gasifier are envisioned. It should be noted herein that the term “cooling chamber” will refer to a quench system or washer regardless of the configuration of the gasifier. Other embodiments of the liquid separator are discussed below with reference to the following figures.

  With reference to FIG. 2, a liquid separator 54 is disclosed. As described above, the liquid separator 54 is disposed proximate to the outlet passage of the cooling chamber. The liquid separator 54 includes a spherical deflector 56 coupled to the dip tube and configured to redirect the flow of cooling syngas in a downward direction from the annular passage between the dip tube and the draft tube. A plurality of fins 58 are arranged on the deflector 56. In the illustrated embodiment, ten fins 58 are provided on the deflector 56. The fins 58 are arranged along the circular direction 60. When the cooling gas stream impinges on the deflector 56 and the fins 58, the flow momentum disappears and the flow velocity decreases, resulting in removal of entrained liquid content from the syngas.

  With reference to FIG. 3, a portion of the cooling chamber 16 is disclosed. A liquid separator 62 is disposed proximate to the outlet passage 52 of the cooling chamber 16. In the illustrated embodiment, the liquid separator 62 is a symmetric liquid separator. The liquid separator 62 includes an elliptical deflector 64 coupled to the dip tube 38 and configured to redirect the flow of cooling syngas in a downward direction from the annular passage 50 between the dip tube 38 and the draft tube 46. .

  With reference to FIG. 4, a portion of the cooling chamber 16 is disclosed. A liquid separator 66 is disposed proximate the outlet passage 52 of the cooling chamber 16. In the illustrated embodiment, the liquid separator 66 is a symmetric liquid separator. The liquid separator 66 includes a rectangular deflector 68 coupled to the dip tube 38 and configured to redirect the flow of cooling syngas in a downward direction from the annular passage 50 between the dip tube 38 and the draft tube 46.

  With reference to FIG. 5, a portion of the cooling chamber 16 is disclosed. A liquid separator 67 is disposed proximate the outlet passage 52 of the cooling chamber 16. In the illustrated embodiment, the liquid separator 67 is an asymmetric liquid separator. The liquid separator 67 includes a deflector 69 coupled to the dip tube 38 and configured to redirect the flow of cooling syngas in a downward direction from the annular passage 50 between the dip tube 38 and the draft tube 46.

  With reference to FIG. 6, a portion of the cooling chamber 16 is disclosed. A liquid separator 70 is disposed proximate to the outlet passage 52 of the cooling chamber 16. The liquid separator 70 is a symmetric liquid separator. The liquid separator 70 includes a trapezoidal deflector 69 coupled to the dip tube 38 and configured to redirect the flow of cooling syngas in a downward direction from the annular passage 50 between the dip tube 38 and the draft tube 46.

  Referring to FIG. 7, a plurality of fins 74 provided on a deflector (not shown) are disclosed. In the illustrated embodiment, the fins 74 include straight fins and are arranged in a polygonal form.

  Referring to FIG. 8, a plurality of fins 76 provided on a deflector (not shown) are disclosed. In the illustrated embodiment, the fins 76 include curved fins and are arranged in a circular shape.

  Referring to FIG. 9, a plurality of fins 78 provided on a deflector (not shown) are disclosed. In the illustrated embodiment, one set of fins 78 can be positioned along radial direction 80 and another set of fins 78 can be positioned along tangential direction 82.

  Referring to FIG. 10, a portion of the cooling chamber 16 according to the embodiment of FIG. 1 is disclosed. The liquid separator 54 includes a spherical deflector 56 coupled to the dip tube 38 and configured to redirect the flow of cooling syngas in a downward direction from the annular passage 50 between the dip tube 38 and the draft tube 46. . The deflector 56 is provided with a plurality of fins 58. In the illustrated embodiment, the fins 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 disclosed. In the illustrated embodiment, the deflector 56 is provided with a plurality of fins 58 arranged along a plurality of rows.

  Referring to FIG. 12, a portion of the cooling chamber 16 according to the embodiment of FIG. 1 is disclosed. In the illustrated embodiment, the deflector 56 is provided with a plurality of fins 58 and is inclined along one row.

  Referring to FIG. 13, a liquid separator 84 is disclosed. In the illustrated embodiment, the liquid separator 84 includes two sets 86, 88 of fins provided on the deflector 90. The two sets 86, 88 of fins are arranged along two circular rows respectively. In one embodiment, the set of fins 85 along one row are alternately arranged with respect to the set of fins 88 in the other row.

  With reference to FIG. 14, an exemplary cooling chamber 85 is disclosed. In the illustrated embodiment, the cooling chamber 85 is a washer. The draft tube 87 is disposed in the cooling chamber 85 so as to surround the dip tube 89. The lower part of the draft tube 87 is immersed in the liquid coolant 91. An annular passage 93 is defined between the draft tube 87 and the dip tube 89. The syngas contacts the liquid coolant 91 to cool the entrained solid particles and remove it from the syngas.

  In the illustrated embodiment, a liquid separator 95 is disposed proximate to the outlet of the annular passage 93. The liquid separator 95 includes a deflector 97 coupled to the dip tube 89 and configured to redirect the flow of the cooled syngas from the annular passage 93 in a downward direction. The deflector 97 can be provided with a plurality of fins (not shown). The cooled syngas that is redirected by the deflector 97 can be forced through a series of fins. As a result, the momentum of the syngas flow disappears and the available flow area is used more efficiently. Next, the syngas flows upward through the space 99 between the draft tube 87 and the wall 101 and flows out from the upper side.

  According to embodiments described herein, the provision of deflectors, fins, or combinations thereof reduces the cooling syngas flow rate and further reduces the gas flow path distance between the liquid coolant and the cooling chamber outlet. Increase is promoted. This results in an increased residence time of the gas and liquid coolant mixture in the cooling chamber and improves the removal of entrained liquid content from the cooling syngas. In general, the deflectors and fins can create a serpentine path for the flow of syngas in the cooling chamber.

  Referring to FIGS. 1-14 herein, it should be noted that the shape of the deflector can vary depending on the application. The number, shape, and arrangement of fins can also be varied and optimized depending on the application. Various permutations and combinations of the various embodiments discussed above can also be envisioned.

  With reference to FIG. 15, a cooling chamber 92 is disclosed. In the illustrated embodiment, the draft tube 94 is positioned within the cooling chamber 92 around the dip tube 96. The cooled syngas passes through an annular passage 98 formed between the dip tube 96 and the draft tube 94 and moves toward the outlet passage 100 of the cooling chamber 92. The liquid separator 102 is disposed adjacent to the outlet passage 100 and surrounds the dip tube 96 and the draft tube 94 in the cooling chamber 92. The syngas is cooled by contacting the liquid coolant 104 in the cooling chamber 92. The liquid separator 102 can be a faceted or circular liquid separator. In the illustrated embodiment, the liquid separator 102 is a conical liquid separator. In one embodiment, the liquid separator 102 can be an asymmetric liquid separator. In another embodiment, the liquid separator 102 can be a symmetric liquid separator. The liquid separator will be described in more detail with reference to the subsequent figures.

  Referring to FIG. 16, a liquid separator 102 according to the embodiment shown in FIG. 15 is disclosed. In the illustrated embodiment, the separator 102 is a symmetric facet separator. The illustrated separator 102 includes a plurality of splash plates 105 and a plurality of V-shaped baffle elements 106 provided on the splash plates 105. The baffle elements 106 are arranged in a converging pattern with channels 108 formed between the baffle elements 106. The baffle element 106 limits the flow area along the radial direction of the separator 102. A pipe 110 is coupled to each channel 108. The cooled syngas exiting the annular passage between the dip tube and the draft tube is sent through the separator 102. The cooling syngas is sent in contact with the inner wall of the splash plate 105 due to inertial force. The baffle element 106 is configured to separate liquid contents from the cooled syngas stream. In other words, due to the converging flow area of the separator 102, the syngas flow is stratified by the density difference between the liquid and the gas. The gas phase is displaced inward along the radial direction in the separator 102 due to flow stratification. Liquid inclusions tend to agglomerate on the baffle element 106. The removed entrained liquid content is discharged into the pipe 110 via the channel 108 and then sent into the cooling chamber. In some embodiments, the baffle element 106 can be provided perpendicular to the surface of the splash plate 105. In other particular embodiments, the baffle element 106 can be disposed at an upward angle with respect to the surface of the splash plate 105.

  According to the embodiments discussed herein, the provision of the splash plate 105 and the baffle element 106 reduces the cooling syngas flow rate and further increases the gas flow path distance between the liquid coolant and the outlet passage of the cooling chamber. Is promoted. This results in an increased residence time of the gas and liquid coolant mixture in the cooling chamber and improves the removal of entrained liquid content from the cooling syngas. Since the radial velocity of the syngas flow is less than the axial velocity, the amount of entrained liquid content in the syngas flowing out of the separator 102 is reduced. In general, the splash plate 105 and the baffle element 106 can create a serpentine path for the flow of syngas in the cooling chamber. Separator 102 also prevents re-entrainment of liquid contents in the syngas.

  With reference to FIG. 17, a circular liquid separator 112 is disclosed. In the illustrated embodiment, the 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 with channels 116 formed between the baffle elements 114. As used herein, the baffle element 114 is not provided uniformly in the circular liquid separator 112. The baffle element 114 limits the flow area along the radial direction in the liquid separator 112. A pipe 118 is coupled to each channel 116.

  The accompanying mitigation mechanisms shown in FIGS. 1 to 17 can be used separately or in combination with each other. Further, as can be appreciated, the relative size, shape and geometric dimensions of the entrainment mitigation mechanism can be varied. It should be noted that although certain embodiments utilize symmetrical geometric dimensions for the liquid separator, an asymmetric structure can be utilized herein for certain applications. For example, by removing one or more fins from a given configuration, cost savings can be achieved while still retaining the function of the liquid separator. The entrainment mitigation mechanism can be utilized in the cooling chamber during initial manufacture or can be retrofitted to existing cooling units and / or washers. Further, the entrainment mitigation mechanism can be adjusted based on operating parameters, such as carbon fuel type, system efficiency, system load, or environmental conditions, among others, to achieve improved system operability and control.

  This written description discloses the invention using examples, including the best mode, and further includes any person skilled in the art to make and use any device or system and any method of inclusion. It is possible to carry out. The patentable scope of the invention is defined by the claims, and may include other examples that occur to those skilled in the art. Such other embodiments are within the scope of the invention if they have structural elements that do not differ from the words of the claims, or if they contain equivalent structural elements that have slight differences from the words of the claims. It shall be in

  While only certain features of the invention have been illustrated and described herein, many modifications and changes will occur to those skilled in the art. It is therefore to be understood that all such modifications and changes that fall within the true spirit of the invention are intended to be protected by the appended claims.

DESCRIPTION OF SYMBOLS 10 Gasifier 12 Outer shell 14 Combustion chamber 16 Cooling chamber 18 Refractory wall 20 Burner 22 Passage 24 Fuel source 26 Passage 28 Combustion support gas source 30 Pressurization source 32 Liquid coolant 34 Discharge port 36 Constriction part 38 Immersion pipe 40 Passage 42 Ring 44 Lower end 46 Draft tube 48 Elongated cylindrical body 50 Annular passage 52 Outlet passage 54 Liquid separator 56 Deflector 57 Hole 58 Fin 60 Circular direction 62 Liquid separator 64 Elliptical deflector 66 Liquid separator 67 Liquid separator 68 Rectangular deflector 69 Deflector 70 liquid separator 72 trapezoidal deflector 74 fin 76 fin 78 fin 80 radial direction 82 tangential direction 84 liquid separator 85 cooling chamber 86 fin 87 draft pipe 88 fin 89 dip pipe 90 deflector 91 liquid coolant 92 cooling chamber 93 annular Path 94 draft pipe 95 liquid separator 96 dip pipe 97 deflector 98 annular passage 99 space 100 outlet passage 101 wall 102 liquid separator 104 liquid coolant 105 splash plate 106 V-shaped baffle element 108 channel 110 pipe 112 circular liquid separator 114 V-shaped Baffle element 116 channels

Claims (8)

A combustion chamber (14) for burning a combustible fuel to generate syngas;
A cooling chamber (16) having a liquid coolant (32) disposed downstream of the combustion chamber (14);
The combustion chamber (14) is coupled to the cooling chamber (16), and syngas from the combustion chamber (14) is sent to the cooling chamber (16) to contact the liquid coolant (32) to generate cooling syngas. A dip tube (38) configured to:
A draft tube (46) surrounding the dip tube (38), defining a circular passage (50) between which the cooling syngas flows in an upward direction ;
Located adjacent to the outlet passage (52) of the cooling chamber (16) and configured to remove entrained liquid content from the cooled syngas routed to the outlet passage (52) through the annular passage (50). A liquid separator (54),
The liquid separator (54) is coupled to the dip tube (38), includes one or more rows of fins, and includes a deflector (56) that redirects the flow of the cooled syngas in a downward direction ;
At least a portion of the deflector (56) is positioned lower than the outlet passage (52);
Each of the rows comprises a plurality of fins spaced apart from each other along the circumferential direction of each row , each fin positioned at an angle with respect to a tangential direction of the circumference ;
Gasifier (10). The gasifier (10) of claim 1, wherein the cooling chamber (16) comprises a quench chamber for a gasifier (10). The gasifier (10) according to claim 1 or 2, wherein the cooling chamber (16) comprises a washer. The gasifier (10) according to any of the preceding claims, wherein the deflector (56) is configured to redirect a flow of cooling syngas from the annular passage (50). The plurality of fins (58) are configured to remove entrained liquid inclusions from the cooled syngas sent through the annular passage (50) to the outlet passage (52). A gasifier (10) according to claim 1. The gasifier (10) according to any of the preceding claims, wherein the liquid separator (54) comprises a conical facet or a circular separator. The liquid separator (54) is a plurality of baffle elements (106, 114) provided in the conical facet or circular separator and through the annular passage (50) to the outlet passage (52). The gasifier (10) according to any of the preceding claims, comprising a plurality of baffle elements (106, 114) configured to remove entrained liquid inclusions from a cooled syngas being sent. The asymmetric or symmetric liquid separator (54) includes a channel (108) between adjacent baffle elements (106, 114), which channel (108) drains the removed entrained liquid. The gasifier (10) according to claim 7, configured as follows.

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