Asymmetric gas-liquid separator

Abstract

The utility model relates to an asymmetrical type gas-liquid separator, including: pipe body and a plurality of heat exchange pipe, pipe body is divided into cooling chamber, inlet chamber, outlet chamber, the top of a plurality of heat exchange pipe is communicated with the outlet chamber, and the bottom of a plurality of heat exchange pipe is placed in the inlet chamber and is communicated with the inlet chamber. A gas-liquid inlet is formed in one side of the inlet cavity, a condensate water outlet is formed in the bottom of the inlet cavity, the length of the heat exchange pipe close to the gas-liquid inlet is larger than that of the heat exchange pipe away from the gas-liquid inlet, the lengths of the heat exchange pipes are sequentially reduced, and a gas outlet is formed in the top of the outlet cavity. A cooling water inlet and a cooling water outlet are formed in the side wall of the cooling cavity, and the cooling water outlet is higher than the cooling water inlet. In a traditional gas-liquid separator, the heat exchange pipe is lengthened on the inlet side, then a certain gradient is formed according to the principle that the heat exchange pipe is gradually decreased, the farther the heat exchange pipe is away from the inlet, the shorter the heat exchange pipe is, and the separation efficiency is improved by improving the heat exchange efficiency through the structure.

Description

Technical Field

[0001] This utility model belongs to the technical field of hydrogen production heat exchangers, and in particular relates to an asymmetric gas-liquid separator. Background Technology

[0002] In integrated hydrogen production systems, a conventional gas-liquid separator is typically used as the hydrogen separator. In traditional separators, each heat exchange tube is of equal length, and hydrogen preferentially flows through the nearest heat exchange tube, resulting in very little hydrogen distribution to the farther tubes. This significantly reduces the heat exchange efficiency of the closer tubes, and the longer the operating time, the more pronounced the efficiency drop. To improve separation efficiency, internal components are often added to the gas-liquid separator, most commonly coils. This allows the introduction of a heat exchange medium, enabling temperature transfer through the hot and cold medium. However, these coil components are often custom-made and have complex manufacturing processes. Furthermore, installing coils in small separators is difficult, while securing them in large separators is challenging. The coil supports can also create eddies in the liquid phase inside the separator, hindering liquid level stability and system control. In chemical processes, multiple devices are often connected in series for staged heat exchange to meet process requirements. However, this increases manufacturing costs, and the series connection adds more piping, complicating the integration process. Summary of the Invention

[0003] This invention provides an asymmetric gas-liquid separator to solve the technical problems of low heat exchange efficiency and complex structure of traditional gas-liquid separators mentioned in the background art.

[0004] The technical solution of this utility model is as follows: An asymmetric gas-liquid separator includes: a tube body and multiple heat exchange tubes. The tube body is divided into a cooling chamber, an inlet chamber, and an outlet chamber. The top ends of the multiple heat exchange tubes are connected to the outlet chamber, and the bottom ends are placed in the inlet chamber and connected to the inlet chamber. A gas-liquid inlet is provided on one side of the inlet chamber, and a condensate outlet is provided at the bottom. The length of the heat exchange tubes closer to the gas-liquid inlet is greater than the length of the heat exchange tubes farther from the gas-liquid inlet. The lengths of the multiple heat exchange tubes decrease sequentially. A gas outlet is provided at the top of the outlet chamber. A cooling water inlet and a cooling water outlet are provided on the side wall of the cooling chamber. The cooling water outlet is higher than the cooling water inlet.

[0005] Furthermore, the bottom end of the heat exchange tube closest to the gas-liquid inlet is lower than the gas-liquid inlet, while the bottom end of the heat exchange tube furthest from the gas-liquid inlet is higher than the gas-liquid inlet.

[0006] Furthermore, the heat exchange tube is a straight tube.

[0007] Furthermore, the inlet chamber and the cooling chamber are separated by a lower tube sheet, and the outlet chamber and the cooling chamber are separated by an upper tube sheet.

[0008] Furthermore, the tops of all the heat exchange tubes are flush with the upper tube sheet.

[0009] The beneficial effects of this utility model are as follows:

[0010] This invention modifies a traditional gas-liquid separator by lengthening the heat exchange tubes at the inlet, then gradually decreasing their length to create a gradient. The further away from the inlet, the shorter the heat exchange tubes become. This structure ensures that each heat exchange tube receives as much gas as possible, thereby improving heat exchange efficiency and increasing separation efficiency. Compared to separators with internal coils, this invention reduces coil manufacturing, simplifies the process, and lowers manufacturing costs. This invention does not change the size of the existing gas-liquid separator, does not significantly increase costs, and does not affect the footprint or location of the existing equipment, allowing for the replacement of existing equipment. Attached Figure Description

[0011] Figure 1 This is a cross-sectional schematic diagram of the present invention. Detailed Implementation

[0012] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. The described embodiments are merely some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0013] In the technical solution of this utility model, Figure 1 This is a structural schematic diagram provided according to the specific structure of an asymmetric gas-liquid separator of this utility model, as shown below. Figure 1 As shown, this utility model includes:

[0014] The tube body consists of a cooling chamber 3, an inlet chamber 1, and an outlet chamber 5. The top ends of the multiple heat exchange tubes are connected to the outlet chamber 5, and the bottom ends are placed inside the inlet chamber 1 and connected to it. A gas-liquid inlet N2 is provided on one side of the inlet chamber 1, and a condensate outlet N1 is provided at the bottom. The length of the heat exchange tubes closer to the gas-liquid inlet N2 is greater than the length of the heat exchange tubes farther away from the gas-liquid inlet N2, and the lengths of the multiple heat exchange tubes decrease sequentially. A gas outlet N4 is provided at the top of the outlet chamber 5. A cooling water inlet N5 and a cooling water outlet N3 are provided on the side wall of the cooling chamber 3, and the cooling water outlet N3 is higher than the cooling water inlet N5.

[0015] In one embodiment of this utility model, the bottom end of the heat exchange tube near the gas-liquid inlet N2 is lower than the gas-liquid inlet N2, and the bottom end of the heat exchange tube away from the gas-liquid inlet N2 is higher than the gas-liquid inlet N2.

[0016] In one embodiment of this utility model, the heat exchange tube is a straight tube.

[0017] In one embodiment of the present invention, the inlet cavity 1 and the cooling cavity 3 are separated by a lower tube plate 2, and the outlet cavity 5 and the cooling cavity 3 are separated by an upper tube plate 4.

[0018] In one embodiment of this utility model, the tops of the multiple heat exchange tubes are all flush with the upper tube sheet 4.

[0019] In this utility model, Figure 1 For example, in the diagram, A, B, C, D, and E represent five heat exchange tubes, with the lengths of the five heat exchange tubes being A > B > C > D > E. The heat exchange tubes can be of the 25×2 specification.

[0020] Cooling water enters the cooling chamber through the cooling water inlet N5, where it comes into full contact with the heat exchange tubes for heat exchange, and then exits through the cooling water outlet N3.

[0021] The mixed gas (gas-liquid two-phase medium) enters the inlet chamber 1 through the gas-liquid inlet, passes through the bottom of heat exchange tubes A, B, C, D, and E into the heat exchange tubes, exits from the top of the heat exchange tubes, and enters the outlet chamber 5. After most of the water vaporizes, the condensate returns to the inlet chamber 1 along the heat exchange tube wall under the action of gravity, and then exits the container from the condensate outlet, while the gas is discharged from the gas outlet.

[0022] When the mixed medium (mostly hydrogen, with a small amount of water) enters heat exchange tubes A, B, C, D, and E, because heat exchange tube A is below the inlet, the hydrogen cannot take a shortcut to heat exchange tube A and can only follow a parallel path. This asymmetrical distribution ensures that the hydrogen takes approximately the same path on average when reaching the inlets of heat exchange tubes A, B, C, D, and E, and the amount of mixed medium passing through each heat exchange tube is also as equal as possible.

[0023] The mixed medium (mostly hydrogen, with a small amount of water) passes through heat exchange tubes A, B, C, D, and E. Due to the inconsistent lengths of the heat exchange tubes, the inlet side is lengthened with a shell-and-tube heat exchange tube, and then the length gradually decreases, forming a certain gradient. The farther away from the inlet, the shorter the heat exchange tube. The time it takes for the mixed medium to reach the inlet of each heat exchange tube is roughly the same, preventing all the mixed medium from being crowded into the heat exchange tube closest to the inlet. This greatly improves the heat exchange efficiency and increases the separation efficiency.

[0024] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solution of this utility model and not to limit it. Although this utility model has been described in detail with reference to examples, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An asymmetric gas-liquid separator characterized by, Comprise: The pipe body is divided into cooling cavity (3), import cavity (1), export cavity (5), the top of multiple heat exchange pipes is communicated with export cavity (5), the bottom is placed in import cavity (1) and is communicated with import cavity (1), one side of import cavity (1) is provided with gas-liquid import (N2) and the bottom is provided with condensed water outlet (N1), the length of heat exchange pipe close to gas-liquid import (N2) is greater than the length of heat exchange pipe far from gas-liquid import (N2), the length of multiple heat exchange pipes decreases in turn, the top of export cavity (5) is provided with gas outlet (N4), the side wall of cooling cavity (3) is provided with cooling water import (N5) and cooling water outlet (N3), cooling water outlet (N3) is higher than cooling water import (N5).

2. The asymmetric gas-liquid separator of claim 1, wherein, The bottom of heat exchange pipe close to gas-liquid import (N2) is lower than gas-liquid import (N2), the bottom of heat exchange pipe far from gas-liquid import (N2) is higher than gas-liquid import (N2).

3. The asymmetric gas-liquid separator of claim 1, wherein, The heat exchange pipe is straight pipe.

4. The asymmetric gas-liquid separator of claim 1, wherein Import cavity (1) and cooling cavity (3) are separated by lower tube plate (2), export cavity (5) and cooling cavity (3) are separated by upper tube plate (4).

5. The asymmetric gas-liquid separator of claim 4, wherein, The top of multiple heat exchange pipes is flush with upper tube plate (4).

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