CN211585928U - Composite air lifting cap - Google Patents
Composite air lifting cap Download PDFInfo
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- CN211585928U CN211585928U CN201922103956.5U CN201922103956U CN211585928U CN 211585928 U CN211585928 U CN 211585928U CN 201922103956 U CN201922103956 U CN 201922103956U CN 211585928 U CN211585928 U CN 211585928U
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Abstract
The utility model discloses a combined type lift cap relates to the chemical industry field, solves current lift cap can not the fully dispersed air current to and the air current impact force that the roof received is blown the problem of turning over too big easily. The utility model adopts the technical proposal that: the combined type gas lifting cap comprises at least two layers of gas lifting structures, each layer of gas lifting structure respectively comprises a box body, a support column and a cover plate, the top surface and the bottom surface of the box body are both open, the support column is arranged at the top of the box body, the top of the support column is connected with the cover plate, and a gas outlet is formed between the box body and the cover plate; the air lifting structures of all layers are arranged in a vertically stacked mode, and the upper air lifting structure and the lower air lifting structure are communicated vertically. The utility model increases the number of the air outlets and optimizes the arrangement of the air outlets, so that the air flow flows out from each air outlet of the air lift cap and is uniformly and fully contacted with the spraying liquid on the upper part of the air lift cap; and the impact force of the airflow on the cover plate of the topmost air lifting structure is reduced, and the cover plate can be prevented from being blown over. The composite gas lifting cap is suitable for deaminizing coal gas.
Description
Technical Field
The utility model relates to the field of chemical industry, in particular to a combined type gas lifting cap which is arranged in a coke oven gas deamination tower, a PDS desulfurization tower or a vacuum carbonate desulfurization tower.
Background
The ammonia washing section of the deamination tower is divided into an upper section, a middle section and a lower section, gas lifting caps are arranged between the sections, and a liquid collecting tank is formed by gaps among the gas lifting caps. The gas from the coke oven gas purification process after the electrical tar precipitator enters an ammonia removal and washing section of an ammonia removal unit, and the coke oven gas from bottom to top directly contacts with an ammonium phosphate solution. Wherein, the lower section adopts the circulating ammonium phosphate rich solution to absorb most NH in the coal gas3The coal gas entering the upper section is continuously desorbed from the returned ammonium phosphate lean solution and the circulating ammonium phosphate lean solution at the upper section to further absorb NH3. When the coal gas passes through the gas lifting cap, the entrained liquid drops are condensed below the gas lifting cap and enter the liquid collecting tank.
As shown in figure 1, the existing deammoniation tower lift cap comprises a rectangular frame 1 and a top plate 2, wherein the rectangular frame 1 is in a cuboid shapeThe top surface and the bottom surface are open, and four corners of the rectangular frame 1 are respectively provided with an upright post 3; between the rectangular frame 1 and the top plate 2, four upright posts 3 respectively form four air outlets, and the four air outlets are distributed on the periphery of the rectangular frame 1; the top of the four upright posts 3 is provided with two top plates 2 with edges respectively inclining downwards, as shown in figure 1. The coal gas flows upwards from the rectangular frame 1 and flows out from the gas outlet, the ammonium phosphate solution is sprayed downwards above the gas lifting cap top plate 2, the top plate 2 prevents the liquid from entering the downward section of the rectangular frame 1 and dripping, and the ammonium phosphate solution and the coal gas contact to absorb NH3. Because the gas flow velocity is high and reaches 10-15 m/s, the gas lifting cap is only provided with four gas outlets, the gas flow can not uniformly and fully contact with the ammonium phosphate solution, and the deamination efficiency is low; moreover, the coal gas can easily directly blow the top plate 2, so that the subsequent coal gas carries more ammonium phosphate solution. Measuring and calculating NH in the gas after the deamination tower3The content reaches 500-1000 mg/Nm3This reduces the deamination efficiency and causes greater corrosion to the subsequent process equipment.
SUMMERY OF THE UTILITY MODEL
The utility model provides a combined type lift cap solves current lift cap and can not the intensive dispersion air current to and the air current impact force that the roof received is blown the problem that turns over too big easily.
The utility model provides a technical scheme that its technical problem adopted is: the combined type gas lifting cap comprises at least two layers of gas lifting structures, each layer of gas lifting structure comprises a box body, support columns and a cover plate, the side walls of the box bodies are enclosed into a circle, the top surface and the bottom surface of the box body are both open, the support columns are arranged at the top of the box body, the top of each support column is connected with the cover plate, the cover plates are obliquely arranged towards the outside of the box body, and gas outlets are formed by the separation of the box body and the cover plates through the support columns;
each layer rises to rise to the gas structure and piles up the arrangement from top to bottom, and the box of upper layer rises to the gas structure is installed on the apron of lower floor's gas structure to the box of upper layer rises to the gas structure sets up the through-hole in the scope that the apron of lower floor's gas structure corresponds, and upper layer rises to the gas structure and the lower floor rises to link up from top to bottom between the gas structure.
Further, the method comprises the following steps: the projection of the cover plate of each layer of the gas lifting structure on the horizontal plane is larger than and covers the projection of the box body on the same layer on the horizontal plane.
Further, the method comprises the following steps: the sizes of the gas lifting structures on the horizontal section from the bottom layer to the top layer are gradually reduced.
Specifically, the method comprises the following steps: the shape of the box body of each layer of the gas lifting structure is a cylinder, a prism or a cuboid.
Specifically, the method comprises the following steps: the cover plate of each layer of the gas lifting structure is in a shape that the middle part is high and the periphery is low.
Specifically, the method comprises the following steps: the gas lifting structure is 2-3 layers.
Specifically, the method comprises the following steps: the gas lifting structure is divided into two layers, namely a bottom layer gas lifting structure and a top layer gas lifting structure, and the box body and the cover plate of the two layers of gas lifting structures are both 304 stainless steel plates with the thickness of 6 mm; the box body of the bottom layer air lifting structure is a cuboid with the length, width and height of 800 multiplied by 500mm, the length and width of the cover plate of the bottom layer air lifting structure is 1000 multiplied by 600mm and is bent into an obtuse angle along the middle point of two wide sides, and the box body and the cover plate of the bottom layer air lifting structure are connected by welding through four support columns; the middle part of the cover plate of the bottom layer air lifting structure is provided with a through hole, the edge of the through hole is welded and connected with the box body of the top layer air lifting structure, the box body of the top layer air lifting structure is a cuboid with the length, width and height of 600 multiplied by 300 multiplied by 500mm, the length and width of the cover plate of the top layer air lifting structure is 800 multiplied by 400mm and is bent into an obtuse angle along the middle point of two wide sides, and the box body of the top layer air lifting structure is welded and connected with the cover plate through four support.
The utility model has the advantages that: the combined type gas lifting cap comprises at least two layers of gas lifting structures, each layer of gas lifting structure forms a circle of gas outlets, the gas outlets of all circles of gas outlets are stacked up and down, and the number of the gas outlets is increased and the arrangement of the gas outlets is optimized, so that airflow flows out from each gas outlet of the gas lifting cap, and the uniform and sufficient contact between the airflow and spraying liquid on the upper part of the gas lifting cap is facilitated; but also reduces the impact force of the airflow on the cover plate of the topmost air lifting structure, and can prevent the cover plate from being blown over.
The projection of the cover plate of each layer of the gas lifting structure on the horizontal plane is larger than and covers the projection of the box body on the same layer on the horizontal plane, so that the cover plate shields the gas outlet on the same layer, and the spraying liquid is prevented from splashing into the gas lifting cap from the gas outlet. The sizes of the air lifting structures on the horizontal section from the bottom layer to the top layer are sequentially reduced, so that the air flow in the air lifting cap is facilitated, and the air flow uniformly flows out from the air outlets of the air lifting structures.
The composite gas raising cap is used in deaminizing tower, gas flows from the bottom of the box and upwards flows out from the gas outlets of the gas raising structures, rich ammonium phosphate solution is sprayed downwards, and the gas contacts fully with ammonium phosphate solution to absorb NH in the gas3The deamination efficiency can be improved, and the corrosion of subsequent process equipment can be reduced.
Drawings
Fig. 1 is a schematic structural view of a conventional lift cap.
Fig. 2 is a schematic structural diagram of an embodiment of the composite air lifting cap of the present invention.
Parts, positions and numbers in the drawings: the device comprises a rectangular frame 1, a top plate 2 and a stand column 3; box 4, support column 5, apron 6.
Detailed Description
The present invention will be further explained with reference to the accompanying drawings.
As shown in FIG. 2, the composite type ventilation cap of the present invention comprises at least two layers of ventilation structures, for example, 2-3 layers of ventilation structures. Every layer of structure of rising gas includes box 4, support column 5 and apron 6 respectively, and the lateral wall of box 4 encloses into the round, and the lateral wall is airtight panel, stainless steel plate for example, and the top surface and the bottom surface of box 4 all are open form, and the bottom surface of box 4 is the air inlet of this layer of structure of rising gas. The top of box 4 sets up support column 5, and support column 5 fixed mounting is in the lateral wall of box 4, and apron 6 is connected at the top of support column 5, and apron 6 is to the outside slope arrangement of box 4. The number of support columns 5 is preferably such that they can firmly support the upper structure. An air outlet is formed between the box body 4 and the cover plate 6 by the separation of the supporting columns 5, and the air outlet is in a circle.
Each layer rises to rise to the gas structure and piles up the arrangement from top to bottom, and adjacent two-layer structure of rising to rise is upper layer structure of rising to rise to the gas structure and lower floor rises to the gas structure respectively, and the box 4 of upper layer structure of rising to rise to set up the through-hole in the scope that the apron 6 of lower floor structure of rising to rise to the gas structure corresponds, and upper layer rises to rise to the gas structure and lower floor and rises to pass through from top to bottom through the through-hole between the structure. The upper layer gas lifting structure and the lower layer gas lifting structure are opposite, and the specific gas lifting structure is not particularly specified. The cover plate 6 of the topmost gas lift structure is not apertured. For example, fig. 2 shows a two-layer embodiment of the lift structure.
In order to avoid the spraying liquid from splashing and entering from the air outlet, the projection of the cover plate 6 of each layer of air lifting structure on the horizontal plane is larger than and covers the projection of the box body 4 on the same layer on the horizontal plane. The shape of the box body 4 of each layer of the gas lifting structure is a cylinder, a prism or a cuboid. The cover plate 6 is in a shape with a high middle part and a low periphery, so that the spray liquid splashed on the cover plate 6 is splashed outwards. Or the cover plate 6 is in a folded angle shape, and two sides of the folded angle incline towards the outer side of the box body 4 respectively. The sizes of the air lifting structures on the horizontal section from the bottom layer to the top layer can be equal, but preferably are gradually reduced, so that the air flow can flow out from the air outlets of all the layers and can be fully contacted with the spraying liquid.
As shown in fig. 2, the composite type lifting cap has two lifting structures, namely a bottom lifting structure and a top lifting structure, and the box body 4 and the cover plate 6 of the two lifting structures are both made of 304 stainless steel plates with the thickness of 6 mm. Wherein, the box 4 of bottom layer structure of rising gas is the cuboid of 800 x 500mm of height of length width, and the top surface and the bottom surface of cuboid are open form, and the length width of the apron 6 of bottom layer structure of rising gas is 1000 x 600mm and buckles for the obtuse angle along the mid point of two broadsides, through four support column 5 welded connection between the box 4 of bottom layer structure of rising gas and the apron 6, and support column 5 is the steel pipe. The middle part of the cover plate 6 of the bottom layer air lifting structure is provided with a through hole, the size of the through hole is slightly smaller than that of the box body 4 of the top layer air lifting structure, and the edge of the through hole is welded and connected with the box body 4 of the top layer air lifting structure. The box 4 of top layer gas lift structure is the cuboid of 600 x 300 x 500mm of length width height, and the top surface and the bottom surface of cuboid are open form, and the length width of the apron 6 of top layer gas lift structure is 800 x 400mm and buckles for the obtuse angle along the mid point of two broadsides, through four spinal branch daggers 5 welded connection between the box 4 of top layer gas lift structure and the apron 6. The combined type air lifting cap is provided with eight air outlets in total.
In the ammonia washing section of the deamination tower, the gas rising cap shown in figure 1 is replaced by the composite gas rising cap shown in figure 2, the working parameters of the raw gas are kept unchanged, and the ammonia content of the gas after the deamination tower is continuously monitored for 30 daysAccording to the ammonia content data of the gas after the deamination tower is NH3The content is 40-80 mg/Nm3. NH in the coal gas after the deamination tower before the improvement3The content is 500-1000 mg/Nm3And is significantly reduced.
Claims (7)
1. The combined type air lifting cap is characterized in that: the air-lift structure comprises at least two layers of air-lift structures, wherein each layer of air-lift structure comprises a box body (4), supporting columns (5) and a cover plate (6), the side wall of each box body (4) is enclosed into a circle, the top surface and the bottom surface of each box body (4) are both open, the supporting columns (5) are arranged at the top of each box body (4), the cover plates (6) are connected with the tops of the supporting columns (5), the cover plates (6) are obliquely arranged towards the outside of the box bodies (4), and the box bodies (4) and the cover plates (6) are separated by the supporting columns (5);
each layer rises to rise to the gas structure and piles up the arrangement from top to bottom, and the box (4) of upper strata structure of rising to install on apron (6) of lower floor's structure of rising to box (4) of upper strata structure of rising set up the through-hole in the scope that apron (6) of lower floor's structure of rising correspond, and upper strata rises to rise to link up from top to bottom between the structure and the lower floor structure of rising.
2. The composite lift cap of claim 1, wherein: the projection of the cover plate (6) of each layer of the air lifting structure on the horizontal plane is larger than and covers the projection of the box body (4) on the same layer on the horizontal plane.
3. The composite lift cap of claim 1, wherein: the sizes of the gas lifting structures on the horizontal section from the bottom layer to the top layer are gradually reduced.
4. The composite lift cap of claim 1, wherein: the shape of the box body (4) of each layer of the gas lifting structure is a cylinder, a prism or a cuboid.
5. The composite lift cap of any of claims 1-4, wherein: the cover plate (6) of each layer of air lifting structure is in a shape that the middle part is high and the periphery is low.
6. The composite lift cap of claim 5, wherein: the gas lifting structure is 2-3 layers.
7. The composite lift cap of claim 1, wherein: the gas lifting structure is divided into two layers, namely a bottom layer gas lifting structure and a top layer gas lifting structure, and the box body (4) and the cover plate (6) of the two layers of gas lifting structures are both 304 stainless steel plates with the thickness of 6 mm; the box body (4) of the bottom layer air lifting structure is a cuboid with the length, width and height of 800 multiplied by 500mm, the length and width of the cover plate (6) of the bottom layer air lifting structure is 600 multiplied by 1000mm, the cover plate is bent to be an obtuse angle along the middle point of the two wide sides, and the box body (4) and the cover plate (6) of the bottom layer air lifting structure are welded and connected through four support columns (5); the middle part of the cover plate (6) of the bottom layer air lifting structure is provided with a through hole, the edge of the through hole is welded with the box body (4) of the top layer air lifting structure, the box body (4) of the top layer air lifting structure is a cuboid with the length, width and height of 600 multiplied by 300 multiplied by 500mm, the length and width of the cover plate (6) of the top layer air lifting structure is 800 multiplied by 400mm and is bent into an obtuse angle along the middle point of two wide sides, and the box body (4) of the top layer air lifting structure is welded with the cover plate (6) through four support columns (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922103956.5U CN211585928U (en) | 2019-11-29 | 2019-11-29 | Composite air lifting cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922103956.5U CN211585928U (en) | 2019-11-29 | 2019-11-29 | Composite air lifting cap |
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| Publication Number | Publication Date |
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| CN211585928U true CN211585928U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922103956.5U Active CN211585928U (en) | 2019-11-29 | 2019-11-29 | Composite air lifting cap |
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| CN (1) | CN211585928U (en) |
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