CN213475882U - Tower plate for washing synthesis gas - Google Patents
Tower plate for washing synthesis gas Download PDFInfo
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- CN213475882U CN213475882U CN202022221757.7U CN202022221757U CN213475882U CN 213475882 U CN213475882 U CN 213475882U CN 202022221757 U CN202022221757 U CN 202022221757U CN 213475882 U CN213475882 U CN 213475882U
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Abstract
The utility model relates to a column plate of synthetic gas washing, including tower tray, riser, a plurality of bubble caps, overflow weir, set up a plurality of risers on the tower tray, a plurality of bubble caps are connected with a plurality of riser cooperations respectively, and the bubble cap is detained at the top of riser, sets up the interval between bubble cap and the riser, and the overflow weir is the loop configuration, and the annular surrounds a plurality of risers, sets up the interval between overflow weir and the riser, and the bottom annular edge of bubble cap side and the interval between the tower tray are 40-55mm, and the top of riser sets up a plurality of openings, and the opening at riser top is the structure of throat in the middle of being. The problem of liquid leakage of the column plate is eliminated, the washing quality of the synthetic gas is ensured, and the anti-blocking capability of the column plate is strong.
Description
Technical Field
The utility model belongs to the technical field of the synthetic gas washing, concretely relates to column plate of synthetic gas washing.
Background
The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.
In a coal gasification plant, a washing system of coal gas is an important unit, wherein the key equipment is a water washing tower (part of manufacturers are called as a carbon washing tower), and the operation quality of the water washing tower directly influences the ash content of the coal gas and the operation period of the gasification plant: the ash content of the coal gas outlet section is less than 1mg/m3Otherwise, the ash accumulation and blockage of the purification workshop waste boiler, the shift converter catalyst and other equipment can be caused, and the safe operation of the system is influenced; the washing quality of the synthesis gas is ensured, and the anti-blocking capability of the tower plate of the water washing tower is improved to ensure a certain operation period. At present, typical tower plate types such as a fixed valve, a fixed tongue, a bubble cap and the like are adopted in a water washing tower in the field of domestic coal gasification, and the used tower plate types respectively have advantages and disadvantages, so that the washing quality and the operation period of the water washing tower cannot be well considered.
The common synthetic gas washing equipment in the coal gasification field is commonly used in tower plate types such as a fixed valve tower plate, a fixed tongue tower plate, a bubble cap tower plate and the like, and the tower plates respectively have the advantages and the disadvantages: the anti-blocking capability of the column plates such as a fixed valve, a fixed tongue, a sieve plate and the like is strong, but the operation elasticity is small, if the aperture ratio of the column plate is too high, when the flow and the gas volume load of the washing liquid are not matched, the liquid leakage phenomenon is easy to occur, the gas and the liquid are not fully contacted, the washing quality of the synthesis gas is influenced, and the problem can not be solved almost completely because the device occupies 50-70% of the normal load at the initial stage of driving; and the channel gaps of the column plates at the initial starting stage and the later operation stage are different, and the opening rate of the column plates cannot be accurately controlled, so that various manufacturers match the column plates with bubble cap column plates at present.
The bubble cap tower plate can keep a liquid seal formed on the tower plate, and ascending air flow enters washing liquid in the overflow weir from a bubble cap tooth gap to form a bubble layer and a foam layer, so that a large amount of mass transfer interfaces are provided for gas-liquid two phases. The bubble-cap tower has the advantages of good operation elasticity and good washing effect, but the gas flow path is tortuous, the pressure drop of the tower plate is large, the entrainment amount of the mist is large, the anti-blocking capability is poor, the difficulty in long-period operation is higher, particularly, the bubble-cap tower plate with the lowest part firstly contacted with the synthesis gas has larger burden, and after the tower plate of the layer is blocked, the pressure difference of the tower plate is directly increased, so that the upper washing liquid is difficult to descend, and the flooding of the washing tower with water is caused.
SUMMERY OF THE UTILITY MODEL
In view of the above problems in the prior art, it is an object of the present invention to provide a syngas scrubbed column plate.
In order to solve the technical problem, the technical scheme of the utility model is that:
the utility model provides a column plate of synthetic gas washing, including the tower tray, the riser, a plurality of bubble caps, the overflow weir, set up a plurality of risers on the tower tray, a plurality of bubble caps are connected with a plurality of risers cooperation respectively, the bubble cap is detained at the top of riser, set up the interval between bubble cap and the riser, the overflow weir is the loop configuration, the annular surrounds a plurality of risers, set up the interval between overflow weir and the riser, the interval between the bottom annular edge of bubble cap side and the tower tray is 40-55mm, the top of riser sets up a plurality of openings, the opening at riser top is the structure of throat for the centre.
The liquid seal is formed on the column plate, the problem of liquid leakage of the column plate is eliminated, the washing quality of the synthetic gas is ensured, the anti-blocking capacity of the column plate is strong, the column plate is used for preliminary ash removal of the synthetic gas, the ash removal efficiency is high, and the column plate can integrally meet the operation period of continuous operation for 6 months.
The utility model discloses one or more technical scheme has following beneficial effect:
compared with the traditional bubble cap column plate, the novel gas-cap column plate is optimized, the ash removal effect is superior to that of a fixed tongue and a fixed valve column plate which are commonly applied in the existing gas device, the effect is close to that of the bubble cap column plate, but the anti-blocking capability and the difficulty of overhauling and cleaning are greatly superior to those of the bubble cap column plate.
The tower plates can be applied to a plurality of layers of lower tower plates of a washing tower, replaces the currently widely adopted fixed valve and fixed tongue type tower plates, improves the initial ash removal capacity of the synthesis gas, greatly lightens the burden of the upper bubble cap tower plate, and well considers the operation period and the washing quality of the washing tower.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the invention and not to limit the invention unduly.
FIG. 1 is a tray structure diagram of syngas scrubbing;
FIG. 2 is a view of the open portion of the draft tube;
FIG. 3 is a structural view of the vent portion of the blister;
wherein, 1, tower tray, 2, riser, 3, bubble cap, 4, overflow weir, 5, opening, 6 and vent.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The utility model provides a column plate of synthetic gas washing, including the tower tray, the riser, a plurality of bubble caps, the overflow weir, set up a plurality of risers on the tower tray, a plurality of bubble caps are connected with a plurality of risers cooperation respectively, the bubble cap is detained at the top of riser, set up the interval between bubble cap and the riser, the overflow weir is the loop configuration, the annular surrounds a plurality of risers, set up the interval between overflow weir and the riser, the interval between the bottom annular edge of bubble cap side and the tower tray is 40-55mm, the top of riser sets up a plurality of openings, the opening at riser top is the structure of throat for the centre.
As a further technical proposal, the height of the riser relative to the tray is 60-65 mm.
As a further technical solution, the height of the chimneys relative to the tray is 60 mm.
As a further technical proposal, the height of the overflow weir relative to the tray is 95-105 mm.
As a further technical solution, the height of the weir relative to the tray is 100 mm.
As a further technical scheme, a plurality of openings at the top of the draft tube are arranged in a ring shape.
As a further technical scheme, a plurality of air vents are arranged at the bottom of the annular side edge of the bubble cap, and the distance between every two adjacent air vents is larger than the diameter of each air vent.
As a further technical solution, the distance between the bottom annular edge of the bubble cap and the tray is 50 mm.
As a further technical scheme, the distance between the inner side wall of the top of the bubble cap and the top of the riser is 28-32 mm.
As a further technical scheme, the bubble cap is connected with the gas rising pipe through an L-shaped bolt. One end of the bolt is welded on the inner wall of the gas lift pipe, and the other end of the bolt fixes the bubble cap through a nut.
As shown in figure 1, the tower plate for washing the synthesis gas comprises a tower tray 1, a gas riser 2, a plurality of bubble caps 3 and an overflow weir 4, wherein the tower tray 1 is provided with the gas riser 2, the bubble caps 3 are respectively matched and connected with the gas riser 2, the bubble caps 3 are buckled at the top of the gas riser 2, a space is arranged between the bubble caps and the gas riser, the overflow weir 4 is of an annular structure and surrounds the gas riser 2 in an annular manner, a space is arranged between the overflow weir and the gas riser, and a space between the annular edge at the bottom of the bubble caps 3 and the tower tray is 40-55 mm.
In use, tray 1 is positioned inside the column, a liquid seal is formed on the tray, and the syngas passes from riser 2 through the gap between riser 2 and bubble cap 3 into the top of tray 1 for scrubbing of the syngas. However, the existing tower tray 1 has a complex structure, a gas flow path is tortuous, the residence time of the synthesis gas is too long, and dust is easily accumulated in the bubble cap 3 and the riser 2, so that the pressure drop of the tower tray is increased, and the problems of flooding and water carrying are easily caused.
The overflow weir 4 is arranged on the tower plate for washing the synthesis gas, and the distance between the bottom of the bubble cap 3 and the tower tray 1 is limited, so that the distance between the bottom of the bubble cap 3 and the tower tray 1 is increased, and the residence time of the synthesis gas and the dust deposition in the bubble cap 3 can be effectively reduced; the arrangement of the overflow weir 4 avoids the leakage problem of the tower plate.
The top of the riser 2 is provided with a plurality of openings, the openings are in a structure with a necking in the middle, namely, the three-dimensional structure formed on the surfaces of the openings is in a venturi tube-like form, when the synthesis gas in the riser 2 reaches the top of the riser 2, the synthesis gas can smoothly move to the position between the outer side of the riser 2 and the bubble cap 3 through the openings, and part of the gas flows through the top of the riser 2 through the space between the riser 2 and the bubble cap 3, so that the gas at the top of the riser 2 is partially divided, the blockage of the synthesis gas is reduced to a certain extent, and the deposition is reduced.
The distance between the bottom of the existing bubble cap 3 and the tray 1 is short, and the synthesis gas needs to flow to the bottom of the bubble cap 3 and then turn to flow out. So that dust is easily accumulated. The existing tower plate is provided with tooth gaps at the middle lower part of the gas lift pipe, and the washing liquid is escaped through the tooth gaps and then is subjected to heat transfer and mass transfer with the washing liquid.
The tower plate for washing the synthetic gas has no tooth seam in the gas raising pipe, so that the synthetic gas flows upwards and to two sides in the gas raising pipe and the residence time of the synthetic gas is reduced.
The height of the chimneys relative to the tray is 60-65 mm. And may be 60 mm.
The height of the weir relative to the tray is 95-105 mm. May be 100 mm.
The openings 5 at the top of the draft tube 2 are arranged in a circular pattern so that the syngas can flow uniformly in a circular direction along the draft tube 2.
The bottom of the annular side edge of the bubble cap 3 is provided with a plurality of air vents 6, and the distance between the adjacent air vents 6 is larger than the diameter of the air vents 6. The liquid on the two sides of the bubble cap forms a convection current, so that the action of a rushing force on the accumulated ash on the inner side wall of the bubble cap and the outer side wall of the riser is realized, and the accumulation of excessive ash is avoided.
The vent 6 is located only at the bottom of the side of the blister and, if located a little above, would interfere with the flow of gas through the bottom of the blister.
The spacing between the bottom annular edge of the bubble cap 3 and the tray is 50 mm.
The distance between the bottom of the bubble cap 3 and the tray increases so that the distance between the bottom of the bubble cap 3 and the top of the riser decreases. The synthesis gas will have a shorter residence time between the bubble cap and the riser 2, resulting in a lower ash deposition inside the bubble cap.
The distance between the inner side wall of the top of the bubble cap 3 and the top of the riser is 28-32 mm. May be 30 mm.
The bubble cap 3 is connected with the gas lift tube 2 through an L-shaped bolt, one end of the bolt is welded on the inner wall of the gas lift tube, and the other end of the bolt fixes the bubble cap through a nut.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A syngas-scrubbed tray characterized by: the tower comprises a tower tray, a gas riser, a plurality of bubble caps and an overflow weir, wherein the tower tray is provided with a plurality of gas risers, the bubble caps are respectively matched and connected with the plurality of gas risers, the bubble caps are buckled at the top of the gas riser, a distance is arranged between the bubble caps and the gas riser, the overflow weir is of an annular structure, the plurality of gas risers are annularly surrounded by the bubbles, a distance is arranged between the overflow weir and the gas riser, the distance between the annular edge at the bottom of the side edge of the bubble caps and the tower tray is 40-55mm, the top of the gas riser is provided with a plurality of openings, and the opening at the top.
2. A syngas scrubbed tray as claimed in claim 1 wherein: the height of the chimneys relative to the tray is 60-65 mm.
3. A syngas scrubbed tray as claimed in claim 2 wherein: the height of the chimneys relative to the tray is 60 mm.
4. A syngas scrubbed tray as claimed in claim 1 wherein: the height of the weir relative to the tray is 95-105 mm.
5. The syngas scrubbed tray of claim 4 wherein: the height of the weir relative to the tray is 100 mm.
6. A syngas scrubbed tray as claimed in claim 1 wherein: the openings at the top of the gas lift pipe are arranged in a ring shape.
7. A syngas scrubbed tray as claimed in claim 1 wherein: the bottom of the annular side edge of the bubble cap is provided with a plurality of air vents, and the distance between the adjacent air vents is greater than the diameter of the air vents.
8. A syngas scrubbed tray as claimed in claim 1 wherein: the spacing between the bottom annular edge of the bubble cap and the tray was 50 mm.
9. A syngas scrubbed tray as claimed in claim 1 wherein: the distance between the inner side wall of the top of the bubble cap and the top of the riser is 28-32 mm.
10. A syngas scrubbed tray as claimed in claim 1 wherein: the bubble cap is connected with the gas lift pipe through an L-shaped bolt, one end of the bolt is welded on the inner wall of the gas lift pipe, and the other end of the bolt fixes the bubble cap through a nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022221757.7U CN213475882U (en) | 2020-09-30 | 2020-09-30 | Tower plate for washing synthesis gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022221757.7U CN213475882U (en) | 2020-09-30 | 2020-09-30 | Tower plate for washing synthesis gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213475882U true CN213475882U (en) | 2021-06-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022221757.7U Active CN213475882U (en) | 2020-09-30 | 2020-09-30 | Tower plate for washing synthesis gas |
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| Country | Link |
|---|---|
| CN (1) | CN213475882U (en) |
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2020
- 2020-09-30 CN CN202022221757.7U patent/CN213475882U/en active Active
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