Vortex prevention device for medium-to-gas water separation tank

Abstract

The utility model discloses an anti-vortex device for a medium-to-gas water diversion tank, which belongs to the technical field of anti-vortex components, and comprises ribs, two baffle plates and a base, the base comprises four support columns and a circular bottom plate, the top ends of the four support columns are uniformly welded on the bottom edge of the circular bottom plate, and the top ends of the four support columns are uniformly welded on the bottom edge of the circular bottom plate. The bottom end of the rib is welded to the center of the top of the circular bottom plate, the two sides of the rib are each provided with a baffle, the two baffles are symmetrically distributed, the baffles are divided into the upper baffles and the lower baffles which are integrally formed, the upper baffles and the lower baffles are rectangular, the upper baffles are wider than the lower baffles, and the rib is welded to the longer sides of the baffles. The baffle is arranged to be wide in the upper portion and narrow in the lower portion, vortex generated in the flowing process of a medium is effectively restrained, fluid flows more stably and orderly, the ribs are welded to the circular bottom plate with the four supporting columns arranged below, and therefore it is guaranteed that the baffle is stably installed, and the baffle cannot loosen or shift under fluid impact, and the function exertion of the baffle is not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of anti-vortex components, and more specifically relates to an anti-vortex device for a medium-variable gas water separation tank. Background Art

[0002] Most of the advanced hydrogen production processes in China adopt the light hydrocarbon steam reforming gasification and pressure swing adsorption (PSA) purification process technology route. Among them, the device consists of two parts, namely the natural gas steam reforming gasification part and the PSA hydrogen purification part. The natural gas steam reforming gasification part consists of raw gas compression, hydrogenation refining, desulfurization, steam reforming, medium temperature conversion, medium temperature gas cooling, steam production and other parts. During the medium temperature gas cooling process, a large amount of condensed water is generated. In addition to trace CO2 and organic matter, the metal ion content in the water is very low (0.05-0.06ppm). If this part of acidic water is discharged directly, it will pollute the environment or increase the burden on the sewage treatment plant. Both China and foreign countries attach great importance to the comprehensive treatment of this part of acidic water. In recent years, the hydrogen production devices put into production have all used this part of acidic water to remove impurities such as CO2 through steam stripping, and then deoxygenated as supplementary water for boiler feed water. Part of the process steam introduced before the reformer participates in the reforming and shifting reactions to generate H2, CO, and CO2, while the other part is condensed during the heat exchange process and separated in the intermediate gas-water separation tank. The acidic water separated in the intermediate gas-water separation tank enters the deaerator, where it is recycled as boiler feed water after removing carbon dioxide and oxygen, or it can be sent out of the device for other uses.

[0003] The existing medium-variable water separation tank operates relatively stably and has a good water separation effect when the entire device is running at low load. However, when the hydrogen production device is running at nearly full load, some problems are relatively exposed, the water separation effect is greatly reduced, and the deaerator pressure is too high and the operation is unstable. In order to ensure the hydrogen production output, the operating liquid level of the medium-variable water separation tank is forced to be increased, and a vent line is added to the deaerator. Although the problem of high deaerator pressure is temporarily solved, the deoxygenation index is far from reaching the design value. The main reason why the deoxygenated water does not meet the standard is that the gas-liquid separation effect of the medium-variable gas liquid separation tank is not good. The process condensate carries a large amount of medium-variable gas into the next-level equipment-the deaerator. The medium-variable gas forms a vortex in the liquid separation tank, and the gas and liquid have no time to separate. The medium-variable gas directly rotates to the bottom of the tank and enters the next-level equipment-the deaerator, resulting in a large amount of medium-variable gas in the deaerator that should be all liquid, so that the pressure exceeds the design range and the deoxygenation capacity cannot be normally exerted.

[0004] Therefore, how to develop an anti-vortex device for a medium-variable gas water separation tank is a technical problem that technical personnel in this field urgently need to solve. Utility Model Content

[0005] In view of this, the utility model provides an anti-vortex device for a medium-variable gas water separation tank.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] An anti-vortex device for a medium-temperature shift gas water separator, comprising ribbed bars, two baffles and a base. The base comprises four support columns and a circular bottom plate. The tops of the four support columns are evenly welded to the bottom edge of the circular bottom plate. The bottom end of the ribbed bar is welded to the center of the top of the circular bottom plate. One baffle is arranged on each side of the ribbed bar, and the two baffles are symmetrically distributed. The baffle is integrally formed by an upper baffle and a lower baffle. Both the upper baffle and the lower baffle are rectangular. The width of the upper baffle is wider than that of the lower baffle. The ribbed bar is welded to the longer side of the baffle.

[0008] Further, the materials of the ribbed bar, the baffle and the base are s32168.

[0009] The beneficial effects of adopting the above further technical solutions: This material is a titanium-stabilized austenitic stainless steel, which has excellent corrosion resistance and high-temperature mechanical properties, and has good corrosion resistance in organic acid and inorganic acid media, extending the service life of the anti-vortex device.

[0010] Further, the length of the upper baffle is 500 mm, the width is 297 mm, and the thickness is 6 mm; the length of the lower baffle is 200 mm, the width is 72 mm, and the thickness is 6 mm.

[0011] Further, the length of the support column is 100 mm, the width is 30 mm, and the thickness is 6 mm.

[0012] Further, the diameter of the circular bottom plate is 150 mm, and the thickness is 6 mm.

[0013] Further, the length of the ribbed bar is 700 mm, the width is 100 mm, and the thickness is 6 mm.

[0014] The beneficial effects of the utility model: The baffle is designed with a wider upper part and a narrower lower part, which is beneficial for the high-speed gas-liquid mixture swirling out from the cyclone separation structure to encounter the wider upper baffle, so that the speed is slowed down, effectively suppressing the vortex generated during the flow of the medium, making the fluid flow more smoothly and orderly. The design of the baffle ratio with a narrower upper part and a wider lower part is the key to achieving the best anti-vortex effect. Welding the ribbed bar to the circular bottom plate with four support columns below is to ensure the stable installation of the baffle and prevent it from loosening or shifting under the impact of the fluid, affecting its function.

[0015] By welding the anti-vortex device of the present invention in the middle and lower parts inside the medium-temperature shift water separation tank, the pressure of the deaerator is significantly reduced. When the bottom drain valve of the medium-temperature shift water separation tank is opened, there is no gas discharge (before the transformation, the exhaust was quite obvious), which proves that the gas-liquid separation effect of the medium-temperature shift gas has been significantly improved. At the same time, through the monitoring of the daily record data for nearly three months, it shows that the pressure of the deaerator is within the design range; the dissolved oxygen index of the deaerated water is within the design range, and the quality of the deaerated water has reached the standard. The excessive dissolved oxygen in the deaerated water directly leads to easy corrosion of the pipelines of the downstream water-using devices and shortens the service life. After welding the present invention, the dissolved oxygen is significantly reduced, reducing the corrosion risk of the pipelines using the deaerated water downstream and extending the service life, so as to maximize the operation benefits of the equipment. The greatest economic benefit of the transformation of the medium-temperature shift gas water separation tank in the hydrogen production device is that when consuming the same amount of natural gas year-on-year, more hydrogen can be produced, thus reducing the raw material consumption and saving the production cost. It can save nearly 3.36 million yuan annually. On the premise of ensuring the safe, continuous and stable operation of each hydrogenation device, the core competitiveness of the enterprise is greatly improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic structural diagram of the anti-vortex device for the medium-temperature shift gas water separation tank of the present invention;

[0017] Figure 2 FIG. is a schematic structural diagram of the baffle;

[0018] Figure 3 FIG. is a schematic longitudinal sectional structure diagram of the base;

[0019] Figure 4 FIG. is a schematic transverse sectional structure diagram of the base;

[0020] Wherein, 1 - rib, 2 - baffle, 2 - 1 - upper baffle, 2 - 2 - lower baffle, 3 - base, 4 - support column, 5 - circular bottom plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figures 1-4As shown, an anti-vortex device for a medium-temperature shift gas water separator includes ribs 1, two baffles 2, and a base 3. The base 3 includes four support columns 4 and a circular bottom plate 5. The tops of the four support columns 4 are evenly welded to the bottom edge of the circular bottom plate 5. The bottom end of the rib 1 is welded to the center of the top of the circular bottom plate 5. One baffle 2 is arranged on each side of the rib 1, and the two baffles 2 are symmetrically distributed. The baffle 2 is integrally formed by an upper baffle 2-1 and a lower baffle 2-2. Both the upper baffle 2-1 and the lower baffle 2-2 are rectangular. The width of the upper baffle 2-1 is wider than that of the lower baffle 2-2. The rib 1 is welded to the longer side of the baffle 2.

[0023] In one embodiment, the materials of the rib 1, the baffle 2, and the base 3 are s32168.

[0024] In one embodiment, the length of the upper baffle 2-1 is 500 mm, the width is 297 mm, and the thickness is 6 mm; the length of the lower baffle 2-2 is 200 mm, the width is 72 mm, and the thickness is 6 mm.

[0025] In one embodiment, the length of the support column 4 is 100 mm, the width is 30 mm, and the thickness is 6 mm.

[0026] In one embodiment, the diameter of the circular bottom plate 5 is 150 mm, and the thickness is 6 mm.

[0027] In one embodiment, the length of the rib 1 is 700 mm, the width is 100 mm, and the thickness is 6 mm.

[0028] The usage method of the anti-vortex device of the present utility model: The anti-vortex device is arranged in the middle and lower part of the medium-temperature shift gas water separator. The bottom ends of the four support columns 4 are welded to the center position of the bottom inside the tank. The two baffles 2 are parallel to the manhole, and the upper edge height of the baffle 2 is flush with the center position of the manhole.

[0029] The description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but rather will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anti-vortex device for a medium shift gas water separation tank, characterized in that It includes rib reinforcements, two baffles and a base. The base includes four support columns and a circular bottom plate. The tops of the four support columns are evenly welded to the bottom edge of the circular bottom plate. The bottom end of the rib reinforcement is welded to the center of the top of the circular bottom plate. One baffle is arranged on each side of the rib reinforcement, and the two baffles are symmetrically distributed. The baffle is integrally formed by an upper baffle and a lower baffle. Both the upper baffle and the lower baffle are rectangular. The width of the upper baffle is wider than that of the lower baffle. The rib reinforcement is welded to the longer side of the baffle.

2. The anti-vortex device for the medium-temperature shift gas water separator according to claim 1, wherein The rib reinforcement, baffle and base are made of s32168.

3. The anti-vortex device for the medium-temperature shift gas water separator according to claim 1, characterized in that, The length of the upper baffle is 500 mm, the width is 297 mm, and the thickness is 6 mm; the length of the lower baffle is 200 mm, the width is 72 mm, and the thickness is 6 mm.

4. The anti-vortex device for the medium shift gas water separation tank according to claim 1, wherein, The length of the support column is 100 mm, the width is 30 mm, and the thickness is 6 mm.

5. The anti-vortex device for the medium-temperature shift gas water separator according to claim 1, characterized in that, The diameter of the circular bottom plate is 150 mm, and the thickness is 6 mm.

6. The anti-vortex device for the medium-temperature shift gas water separator according to claim 1, characterized in that, The length of the rib reinforcement is 700 mm, the width is 100 mm, and the thickness is 6 mm.

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