A plate-and-shell heat exchanger separator with heat exchange and separation functions

Abstract

The application provides a plate-shell heat exchanger separator with heat exchange and separation functions, which is characterized in that a plate-shell heat exchanger, an oil-gas separator and an oil-water separator are arranged in a shell from top to bottom, a tube plate assembly, a vertical plate and a flat plate jointly form a flow process partition plate in the shell, the inner space of the shell is divided into a shell pass and a plate pass, a partition plate is connected to the shell pass in a floating sealing mode, a plate bundle head is fixed to the top of the plate bundle, the plate bundle head is connected to a hot flow inlet, a cold flow outlet and a cold flow inlet are arranged on the shell, the cold flow outlet and the cold flow inlet are in communication with the shell pass, the tube plate assembly, the vertical plate, the flat plate and the shell form a gas rising space, the shell in the range of the gas rising space is provided with a hot flow gas outlet, the oil-gas separator is arranged below the tube plate assembly, the shell close to the upper part of the oil-water separator is provided with a heavy oil outlet, and the bottom of the shell is provided with a synthetic water outlet.

Description

Technical Field

[0001] This utility model belongs to the field of heat exchanger combined with liquid separation technology, and relates to a plate and shell type heat exchanger separator with dual functions of heat exchange and separation. Background Technology

[0002] Plate and shell heat exchangers have higher heat transfer efficiency than shell and tube heat exchangers. In petroleum, chemical, and coal-to-oil plants, plate and shell heat exchangers are gradually replacing shell and tube heat exchangers as high-efficiency and energy-saving equipment. Especially in high-flow-rate media heat exchange, where high-efficiency heat transfer is required to reduce equipment size and control the degree of equipment enlargement, using plate and shell heat exchangers with high-efficiency heat transfer performance is an effective measure to optimize the process.

[0003] With the development of large-scale equipment, there is a clear demand for improving space utilization. While improving the performance of individual equipment, it is necessary to integrate equipment that meets different process requirements to reduce the footprint and save space occupied by intermediate connection parts. Traditional processes require material heat exchange, oil-gas separation after heat exchange, and oil-water separation. This requires separate installation of heat exchangers, oil-gas separators, and oil-water separators for individual equipment, and the intermediate pipeline connections are complex, resulting in a huge footprint for the entire system. Utility Model Content

[0004] The purpose of this invention is to propose a plate-shell heat exchanger and separator with heat exchange and separation functions.

[0005] The technical solution of this utility model is as follows: A plate-and-shell heat exchanger and separator with heat exchange and separation functions is provided in the shell from top to bottom. A plate-and-shell heat exchanger, an oil-gas separator, and an oil-water separator are arranged in the shell. A tube sheet assembly, a vertical plate, and a flat plate are arranged in the shell. The tube sheet assembly is at the bottom and the flat plate is at the top. The vertical plate is connected between the tube sheet assembly and the flat plate. The tube sheet assembly, the vertical plate, and the flat plate together form a flow partition plate, which divides the internal space of the shell into a shell side and a plate side. Cold flow flows in the shell side and hot flow flows in the plate side. A partition plate is connected in the shell side by a floating seal. A plate bundle head is fixed at the top of the plate bundle and is connected to the hot flow inlet. The shell is provided with a cold flow outlet and a cold flow inlet. The cold flow outlet and the cold flow inlet are connected to the shell side space. A gas rising space is formed between the tube sheet assembly, the vertical plate, the flat plate, and the shell. The shell within the range of the gas rising space is provided with a hot flow gas outlet. The oil-gas separator is located below the tube sheet assembly. The shell near the top of the oil-water separator is provided with a heavy oil outlet. A compound water outlet is provided at the bottom of the shell.

[0006] Furthermore, a level gauge is installed near the heavy oil outlet.

[0007] The oil-gas separator consists of an oil-gas separator frame, a TP plate, a bottom plate, and a liquid collection funnel. The oil-gas separator frame includes a top plate, a column, an inner liner, and an outer liner. The bottom part of the top plate is connected to the column. The inner and outer liners are horizontally fixed to the column. The TP plate is located between the inner and outer liners. The liquid collection funnel is fixed to the bottom of the column. The top inlet of the liquid collection funnel is close to the bottom of the TP plate. The bottom plate is fixed to the upper edge of the liquid collection funnel and is a blind plate.

[0008] The base plate has an inverted frustum structure. The TP plate has a corrugated structure.

[0009] The tube sheet assembly consists of a main tube sheet, a secondary tube sheet, and bushings. The main tube sheet is separated from the shell side and is sealed to the shell. Compared to the main tube sheet, the secondary tube sheet has a smaller diameter and does not directly contact the shell. The bushings are fixed between the main tube sheet and the secondary tube sheet.

[0010] The beneficial effects of this utility model are: 1. It integrates heat exchange, oil-gas separation, and oil-water separation into one unit, saving space and eliminating the need for external pipeline connections, thus possessing practicality and economy;

[0011] 2. The process partition plate composed of tube sheet assembly solves the space required for gas to rise without affecting the fluid flow path. At the same time, the vertical plate is adjacent to the cold flow and has the function of liquefying the rising gas, thereby increasing the oil output rate.

[0012] 3. The plate bundle adopts a bottom fixing and top expansion joint installation method, expanding upward as a whole;

[0013] 4. The plate bundle tube sheet assembly has a double-layer structure, which serves to separate the plate shell and the medium, while also bearing the pressure difference, improving the bending modulus and saving materials;

[0014] 5. The flow cross-section remains unchanged after the hot flow is cooled, allowing it to be directly connected to the oil-gas separator, ensuring effective media distribution and improving separation accuracy. Attached Figure Description

[0015] Figure 1 —General assembly drawing of this utility model;

[0016] Figure 2 —Another perspective of the general assembly drawing of this utility model;

[0017] Figure 3 —A schematic diagram of the plate bundle structure of this utility model;

[0018] Figure 4 —A schematic diagram of the plate bundle structure of this utility model from another perspective;

[0019] Figure 5 —A schematic diagram of the oil-gas separator structure of this utility model;

[0020] Figure 6 —A schematic diagram of the oil-gas separator frame structure of this utility model;

[0021] Figure 7 —A schematic diagram of the TP plate structure of the oil-gas separator of this utility model;

[0022] Figure 8 —A schematic diagram of the TP plate bundle structure of the oil-gas separator of this utility model;

[0023] Figure 9 —A schematic diagram of the liquid-gathering funnel structure of this utility model;

[0024] Figure 10 —A schematic diagram of the liquid-gathering funnel structure of this utility model from another perspective;

[0025] Figure 11 —A schematic diagram of the tube sheet assembly of this utility model;

[0026] In the diagram: 1-plate bundle, 2-oil-gas separator, 3-oil-water separator, 5-plate bundle head, 51-hot flow inlet, 52-cold flow outlet, 53-cold flow inlet, 54-synthetic water outlet, 55-hot flow gas outlet, 56-heavy oil outlet, 57-level gauge, 11-plate bundle plate side inlet, 12-plate bundle head, 13-partition plate, 14-tube sheet assembly, 15-vertical plate, 16-flat plate, 17-plate bundle shell side inlet, 18-plate bundle shell side outlet, 19-plate bundle plate side outlet, 21-oil-gas separator frame, 22-TP plate, 23-bottom plate, 24-liquid hopper, 2101-top plate, 2102-column, 2103-inner liner, 2104-outer liner, 1401-secondary tube sheet, 1402-main tube sheet, 1403-liner strip. Detailed Implementation

[0027] like Figures 1-2 As shown, the tube sheet assembly 14, the vertical plate 15, and the flat plate 16 together form a process partition plate, that is, the above structure divides the inner space of the shell 5 into the shell side and the plate side space.

[0028] The partition 13 is a separator for the inlet and outlet of cold flow in the shell side. Since it is a separation of the same fluid, the partition 13 is a floating seal.

[0029] like Figures 3-4 As shown, according to the flow path of the fluid, the plate bundle is divided into the plate side and the shell side. The space inside the plate tube is the plate side, and the space outside the plate tube is the shell side.

[0030] The level gauge 57 is used to observe the oil and water levels in order to adjust the flow rate of the synthetic water outlet 54 and the heavy oil outlet 56.

[0031] A plate bundle head 12 is fixed to the top of the plate bundle 1. The plate bundle head 12 is connected to the hot flow inlet 51. The shell 5 is provided with a cold flow outlet 52 and a cold flow inlet 53. The cold flow outlet 52 and the cold flow inlet 53 are connected to the shell-side space. The tube sheet assembly 14, the vertical plate 15, the flat plate 16 and the shell 5 form a gas rising space. The shell 5 within the range of the gas rising space is provided with a hot flow gas outlet 55. The oil-gas separator 2 is located below the tube sheet assembly 14. The shell 5 near the upper part of the oil-water separator 3 is provided with a heavy oil outlet 56. The bottom of the shell 5 is provided with a compound water outlet 54.

[0032] Fluid flow path:

[0033] Hot flow: Hot flow inlet 51 → Plate bundle inlet 11 → Distributed to each plate bundle tube, flowing inside the tube → Plate bundle outlet 19, exiting from the plate bundle outlet 19, gas flows out from the hot flow gas outlet 55, liquid flows downward by gravity, after oil-liquid separation, it exits through the heavy oil outlet 56 and the synthetic water outlet 54 respectively.

[0034] Cold flow: Cold flow inlet 53 → Plate bundle shell side inlet 17 → Distributed to each shell side plate tube, flowing outside the plate tube → Plate bundle shell side outlet 18 → Cold flow outlet 52.

[0035] The hot and cold fluids exchange heat on both sides of the plate bundle.

[0036] like Figure 5-10 As shown, the oil-gas separator 2 consists of an oil-gas separator frame 21, a TP plate 22, a bottom plate 23, and a liquid-gathering funnel 24. The oil-gas separator frame 21 includes a top plate 2101, a column 2102, an inner liner 2103, and an outer liner 2104. The bottom of the top plate 2101 is connected to the column 2102. The inner liner 2103 and the outer liner 2104 are horizontally fixed to the column 2102. The TP plate 22 is located between the inner liner 2103 and the outer liner 2104. The liquid-gathering funnel 24 is fixed to the bottom of the column 2102, and the top inlet of the liquid-gathering funnel 24 is close to the bottom of the TP plate 22. The bottom plate 23 is fixed to the upper edge of the liquid-gathering funnel 24. The oil-gas separator bottom plate 23 is an inverted frustum structure, i.e., a blind plate.

[0037] The TP plate of oil-gas separator 3 has a corrugated structure, such as... Figure 7 As shown, each oil-gas separator plate bundle consists of several TP plates.

[0038] like Figure 11 As shown, the tube sheet assembly consists of a main tube sheet 1402, a secondary tube sheet 1401, and a bushing 1403. The main tube sheet 1402 separates the shell side and the plate side, and is sealed to the shell 5. Compared to the main tube sheet 1402, the secondary tube sheet 1401 has a smaller diameter and does not directly contact the shell 5. The bushing 1403 is placed between the main tube sheet 1402 and the secondary tube sheet 1401 to connect and fix them.

[0039] The process flow of this device:

[0040] First, the raw material (cold flow) enters the shell side of the plate-and-shell heat exchanger through the cold flow inlet 53, where its temperature rises. Next, the preheated raw material enters the reactor for further heating, increasing its temperature further. After catalysis, it flows out of the reactor. Then, the reaction products enter the plate side of the plate-and-shell heat exchanger through the hot flow inlet 51, where their temperature decreases. The cooled reaction products flow out from the plate side outlet 19. After separation by the oil-gas separator, the gaseous portion is discharged from the hot gas outlet 55, and the liquid portion enters the oil-water separator chamber. After gravity settling, the water flows out from the synthesis water outlet 54, and the oil flows out from the heavy oil outlet 56.

Claims

1. A plate-and-shell heat exchanger and separator with heat exchange and separation functions, wherein a plate-and-shell heat exchanger, an oil-gas separator (2), and an oil-water separator (3) are arranged from top to bottom inside the shell (5), characterized in that: Tube sheet assembly (14), vertical plate (15), and flat plate (16) are arranged inside the shell (5). Tube sheet assembly (14) is at the bottom and flat plate (16) is at the top. Vertical plate (15) is connected between tube sheet assembly (14) and flat plate (16). Tube sheet assembly (14), vertical plate (15), and flat plate (16) together form a flow partition plate. The flow partition plate divides the internal space of the shell (5) into shell side and plate side. Cold flow flows in shell side and hot flow flows in plate side. A partition plate (13) is connected in the shell side by a floating seal. A plate bundle head (12) is fixed on the top of the plate bundle (1). The plate bundle head (12) The hot flow inlet (51) is connected to the shell (5). The shell (5) is provided with a cold flow outlet (52) and a cold flow inlet (53). The cold flow outlet (52) and the cold flow inlet (53) are connected to the shell side space. The tube sheet assembly (14), the vertical plate (15), the flat plate (16) and the shell (5) form a gas rising space. The shell (5) within the range of the gas rising space is provided with a hot flow gas outlet (55). The oil-gas separator (2) is located below the tube sheet assembly (14). The shell (5) near the upper part of the oil-water separator (3) is provided with a heavy oil outlet (56). The bottom of the shell (5) is provided with a synthetic water outlet (54).

2. The plate-and-shell heat exchanger separator with heat exchange and separation functions according to claim 1, characterized in that: The oil-gas separator (2) consists of an oil-gas separator frame (21), a TP plate (22), a bottom plate (23), and a liquid-gathering funnel (24). The oil-gas separator frame (21) includes a top plate (2101), a column (2102), an inner liner (2103), and an outer liner (2104). The bottom part of the top plate (2101) is connected to the column (2102). The inner liner (2103) and the outer liner (2104) are horizontally fixed on the column (2102). The TP plate (22) is between the inner liner (2103) and the outer liner (2104). The liquid-gathering funnel (24) is fixed at the bottom of the column (2102). The top inlet of the liquid-gathering funnel (24) is close to the bottom of the TP plate (22). The bottom plate (23) is fixed on the upper edge of the liquid-gathering funnel (24). The bottom plate (23) is a blind plate.

3. The plate-and-shell heat exchanger separator with heat exchange and separation functions according to claim 2, characterized in that: The base plate (23) is an inverted frustum structure.

4. The plate-and-shell heat exchanger separator with heat exchange and separation functions according to claim 3, characterized in that: The TP board (22) has a corrugated structure.

5. The plate-and-shell heat exchanger separator with heat exchange and separation functions according to claim 1, characterized in that: A level gauge (57) is installed near the heavy oil outlet (56).

6. The plate-and-shell heat exchanger separator with heat exchange and separation functions according to claim 1, characterized in that: The tube sheet assembly (14) consists of a main tube sheet (1402), a secondary tube sheet (1401), and a liner (1403). The main tube sheet (1402) separates the shell side and is sealed to the shell (5). Compared with the main tube sheet (1402), the secondary tube sheet (1401) has a smaller diameter and does not directly contact the shell (5). The liner (1403) is fixed between the main tube sheet (1402) and the secondary tube sheet (1401).

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