CN214010064U

CN214010064U - High-pressure cooler

Info

Publication number: CN214010064U
Application number: CN202022822888.0U
Authority: CN
Inventors: 王宁; 徐启飞; 王开朋; 孙纯刚; 陈辉; 陈卉妍; 王维西
Original assignee: Jiangnan Boilers & Pressure Vessels Zhangjiagang Co ltd
Current assignee: Jiangsu Jiangguo Intelligent Equipment Co.,Ltd.
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-08-20
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses a high-pressure cooler, which comprises a housin, shell side import and shell side export, locate the polylith baffling board that just arranges along the axial of casing in the casing, set up a plurality of mounting holes on the baffling board, wear to locate many heat exchange tubes in a plurality of mounting holes, tube side import and tube side export, set up the breach at baffling board top, a plurality of spaced apart gas pockets on locating baffling board upper portion, the opening that forms between breach and the shells inner wall on the polylith baffling board makes up into first gas passage, make up into many second gas passage between a plurality of gas pockets that correspond on the polylith baffling board, cooling gas can the complex flow in first gas passage and/or second gas passage. The utility model discloses a high-pressure cooler through first gas passage and second gas passage's setting for the cooling gas on casing upper portion can flow fast and discharge through first gas passage and/or second gas passage, avoids the cooling gas gathering, has improved the heat exchange efficiency on casing upper portion.

Description

High-pressure cooler

Technical Field

The utility model relates to a high-pressure cooler.

Background

The quencher is a very widely applied device in a cooling system of an ethylene cracking ammonia synthesis device and mainly comprises a high-temperature high-pressure cooler. Most of the existing high-pressure coolers are fixed tube-plate heat exchangers. Because the material that the pyrolysis furnace reaction came out needs timely cooling, just can hinder the gas that the pyrolysis furnace came out to continue to react, improve the main reaction rate of equipment, reduce the production of by-product, consequently have higher requirements for the heat exchange efficiency of heat exchanger.

Current heat exchanger includes the casing usually, locates the polylith baffling board in the casing, wears to locate the heat exchange tube in the polylith baffling board, through letting in to leading to out cooling liquid in the casing, cooling liquid can flow round the baffling board and with the heat transfer of the intraductal high temperature gas of heat exchange, realize the cooling to high temperature gas. However, the cooling liquid is changed into a steam-water mixture after heat exchange, the gas content in water is gradually increased along with the heat exchange process, a large amount of gas is collected on the upper part of the shell due to the obstruction of the baffle plate and cannot be discharged, and the heat exchange efficiency of the upper part of the shell is seriously influenced.

Disclosure of Invention

The utility model aims at overcoming the not enough of prior art, provide an improved high pressure cooler.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a high-pressure cooler comprises a shell, a shell pass inlet, a shell pass outlet, a plurality of baffle plates, a plurality of mounting holes, a plurality of heat exchange tubes, a tube pass inlet and a tube pass outlet, wherein the shell pass inlet is formed in the shell and communicated with an inner cavity of the shell and used for introducing cooling liquid, the shell pass outlet is used for introducing cooling liquid and cooling gas after heat exchange, the baffle plates are arranged in the shell and distributed along the axial direction of the shell, the mounting holes are formed in the baffle plates, the heat exchange tubes are arranged in the shell and respectively and correspondingly penetrate through the mounting holes, the tube pass inlet is formed in the shell and communicated with the heat exchange tubes and used for introducing high-temperature gas, the tube pass outlet is used for introducing low-temperature gas, the high-pressure cooler also comprises a notch formed in the top of the baffle plate, a plurality of air holes which are formed in the upper part of the baffle plate and are positioned among the mounting holes, and a first gas channel is formed by the notches in the baffle plates and the openings formed in the inner wall of the shell, and a plurality of second gas channels are formed by combining a plurality of corresponding gas holes on the baffle plates, and the cooling gas can flow in the first gas channels and/or the second gas channels in a matched mode.

Preferably, the plurality of air holes on the baffle plate can be respectively arranged at intervals around the circumference of the plurality of mounting holes.

Preferably, the arrangement area of the plurality of air holes on the baffle plate accounts for 1/3-1/2 of the total area of the baffle plate.

Preferably, the distance between the baffles increases gradually along the direction from the shell side inlet to the shell side outlet.

Preferably, the shell is arranged to be inclined upwards along a horizontal direction, and the shell-side inlet and the shell-side outlet are sequentially arranged on the side wall of the shell along the inclined direction of the shell.

Further preferably, the inclination angle of the shell is 3-15 degrees.

Further preferably, the high-pressure cooler further comprises at least two supporting seats arranged at the bottom of the shell and used for supporting the shell, and the heights of the at least two supporting seats are gradually increased along the direction from the shell-side inlet to the shell-side outlet.

Preferably, the high-pressure cooler further includes a welding structure, the welding structure includes a first body and a second body, the first body has a first connection end, the second body has a second connection end, the first connection end has a first bevel face connected to two side faces of the first body, the second connection end has a second bevel face connected to two side faces of the second body, a welding region with an opening at one end is formed between the first bevel face and the second bevel face, the first bevel face and the second bevel face are abutted and attached to each other during welding, and an included angle between the first bevel face and the second bevel face is smaller than 10 °.

Preferably, the high-pressure cooler further comprises at least two ultrasonic generators disposed outside the housing.

Preferably, the high-pressure cooler still includes the liquid processing unit, the liquid processing unit includes the suspended condensation pond, ion exchanger, deoxidization heater and pump, the pump is used for with cooling liquid draws in proper order through the suspended condensation pond, ion exchanger with behind the deoxidization heater certainly the shell side import is sent into in the casing.

Because of above-mentioned technical scheme's application, compared with the prior art, the utility model have the following advantage: the utility model discloses a high-pressure cooler through first gas passage and second gas passage's setting for the cooling gas on casing upper portion can flow fast and discharge through first gas passage and/or second gas passage, avoids the cooling gas gathering, has improved the heat exchange efficiency on casing upper portion.

Drawings

Fig. 1 is a schematic structural view of a high-pressure cooler according to an embodiment of the present invention;

fig. 2 is a schematic surface structure diagram of a baffle plate in an embodiment of the present invention;

fig. 3 is a schematic top view of a high pressure cooler in an embodiment of the invention;

fig. 4 is a schematic view of a welding structure when the first body and the second body are respectively a cylinder and a connecting pipe in the embodiment of the present invention;

fig. 5 is a schematic view of a welding structure when the first body and the second body are two sections of cylinders respectively according to an embodiment of the present invention;

fig. 6 is a schematic diagram of the relative positions of the housing and the ultrasonic generator according to the embodiment of the present invention;

fig. 7 is a schematic diagram of a high pressure chiller with a liquid treatment unit according to an embodiment of the present invention.

In the figure: 1. a housing; 1a, a cylinder body; 2. a shell side inlet; 3. a shell-side outlet; 4. a baffle plate; 5. mounting holes; 6. a heat exchange pipe; 7. a tube side inlet; 8. a tube side outlet; 9. a notch; 10. air holes; 11. a supporting seat; 12. welding a structure; 12a, a first connecting end; 12a1, a first bevel face; 12a11, a first bevel face a; 12a12, a first bevel face B; 12b, a second connecting end; 12b1, a second bevel face; 12b11, second bevel face a; 12B12, a second bevel face B; 12c, welding areas; 13. an ultrasonic generator; 14. a suspension pool; 14a, a stirrer; 15. an ion exchanger; 16. a deoxygenating heater; 17. a pump; 18. an inlet header; 19. an outlet pipe box; 20. taking over a pipe; 21. a tube sheet; 22. and (4) connecting the sections.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

The utility model relates to an improvement to high pressure cooler. The improved high-pressure cooler is provided with the first gas channel and the second gas channel, so that cooling gas on the upper portion of the shell can flow and be discharged quickly through the first gas channel and/or the second gas channel, the gathering of the cooling gas is avoided, and the heat exchange efficiency on the upper portion of the shell is improved.

Referring to fig. 1 to 7, a high pressure cooler is shown, which includes a casing 1, a shell side inlet 2 opened on the casing 1 and communicated with an inner cavity of the casing 1 for introducing cooling liquid, a shell side outlet 3 for introducing cooling liquid and cooling gas after heat exchange, a plurality of baffle plates 4 arranged in the casing 1 and arranged along an axial direction of the casing 1, a plurality of mounting holes 5 opened on the baffle plates 4, a plurality of heat exchange tubes 6 respectively and correspondingly arranged in the mounting holes 5 and arranged in the casing 1, a tube side inlet 7 opened on the casing 1 and communicated with the plurality of heat exchange tubes 6 for introducing high temperature gas, and a tube side outlet 8 for introducing low temperature gas. Wherein, the two ends of the shell are also provided with an inlet pipe box 18, an outlet pipe box 19 and a pipe plate 21 positioned between the inlet pipe box 19 and the outlet pipe box 19 and the shell 1, the two ends of the heat exchange pipe 6 respectively penetrate through the pipe plate 21 and are communicated with the inlet pipe box 18 and the outlet pipe box 19, and the pipe pass inlet 7 and the pipe pass outlet 8 are respectively communicated with the inlet pipe box 18 and the outlet pipe box 19.

In the present embodiment, as shown in fig. 2, the innovative points are: the high-pressure cooler in the embodiment further comprises a notch 9 arranged at the top of the baffle plate 4, and a plurality of air holes 10 which are arranged at the upper part of the baffle plate 4 at intervals and are positioned among the plurality of mounting holes 5, wherein the notch 9 is formed by cutting off part of the plate body at the upper part of the baffle plate, and the shape and the size of the cut-off part of the plate body are flexibly made according to requirements. The openings formed between the notches 9 on the plurality of baffle plates 4 and the inner wall of the shell 1 are combined into a first gas channel, a plurality of corresponding gas holes 10 on the plurality of baffle plates 4 are combined into a plurality of second gas channels, and cooling gas can flow in the first gas channel and/or the second gas channels in a matched mode. So, after the cooling gas that produces after the cooling liquid of shell side and the high-temperature gas heat transfer of tube side flows the gathering upwards, can discharge fast through first gas passage and second gas passage, do not crowd the space that occupies cooling liquid, improved the heat exchange efficiency on casing upper portion.

Furthermore, a plurality of air holes 10 on the baffle plate can be arranged at intervals around the circumferential direction of the plurality of mounting holes 5, and the arrangement area of the plurality of air holes 10 on the baffle plate 4 accounts for 1/3-1/2 of the total area of the baffle plate 4. In this way, the cooling gas flowing to the upper part of the housing 1 can be made to enter the corresponding gas passage, ensuring the discharge of the cooling gas.

As shown in fig. 1 and fig. 3, the innovation points of the present embodiment are also that: the spacing between the baffles 4 increases gradually in the direction from the shell-side inlet 2 to the shell-side outlet 3. Like this, can guarantee that the mixture of the expanded cooling gas of volume that produces and cooling liquid has sufficient flow space after the continuous heat transfer evaporation of cooling liquid, guarantee the heat transfer area of heat exchange tube 6, and then can guarantee heat exchange efficiency.

Preferably, as shown in fig. 1, the shell 1 is arranged to be inclined upward along the horizontal direction at an inclination angle of 3-15 °, and the shell-side inlet 2 and the shell-side outlet 3 are sequentially arranged on the side wall of the shell 1 along the inclination direction of the shell 1. The casing 1 that the tilt up set up can cooperate with first gas passage and second gas passage, utilizes great density difference to promote cooling gas to move toward shell side export 3 for the flow of cooling gas at heat exchange tube 6 outer wall, can promote the faster discharge of cooling gas on the one hand, and on the other hand has reinforceed the heat transfer, has improved heat exchange coefficient 3-5 between heat exchange tube 6 and the cooling liquid.

Further, the high-pressure cooler of the present embodiment further includes two supporting seats 11 disposed at the bottom of the shell 1 for supporting the shell 1, and the height of the two supporting seats 11 is gradually increased along the direction from the shell-side inlet 2 to the shell-side outlet 3 to ensure the inclined state of the shell 1.

As shown in fig. 4-5, the casing 1 in this embodiment includes a plurality of sections of mutually welded cylinder 1a, a plurality of connecting pipes 20 are welded to the cylinder 1a, and the shell-side inlet 2 and the shell-side outlet 3 are respectively opened on one of the connecting pipes 20. The high-pressure cooler further comprises a welding structure 12 used between the two cylinder bodies 1a and between the cylinder bodies 1a and the connecting pipes 20, wherein the welding structure 12 comprises a first body and a second body, the first body is provided with a first connecting end 12a, the second body is provided with a second connecting end 12b, the first connecting end 12a is provided with a first bevel face 12a1 connected with two side faces of the first body, the second connecting end 12b is provided with a second bevel face 12b1 connected with two side faces of the second body, a welding area 12c with one end opened is formed between the first bevel face 12a1 and the second bevel face 12b1, during welding, the first bevel face 12a1 is in butt joint with the second bevel face 12b1, and an included angle a between the first bevel face 12a1 and the second bevel face 12b1 is 8 +/-1 degrees. Therefore, by arranging the first bevel face 12a1 and the second bevel face 12b1, one sides of the first bevel face 12a1 and the second bevel face 12b1 are mutually butted to form a welding area 12c with an ultra-narrow gap with an included angle of 8 +/-1 degrees, and on one hand, the welding area 12c with the ultra-narrow gap can ensure that the edges of the welding seam are better fused, and the welding defect is avoided; on the other hand, the amount of filling metal is reduced, and the cost is saved. Finally, the welding stress can be reduced by about 30%.

When the first body and the second body are the cylinder 1a and the connection pipe 20, the welding structure 12 is used for welding the cylinder 1a and the connection pipe 20, two sides of the first bevel face 12a1 are respectively connected with the outer circumferential face and the inner circumferential face of the cylinder 1a, and two sides of the second bevel face 12b1 are respectively connected with the outer circumferential face and the end face of the connection pipe 20; when the first body and the second body are two sections of cylinders 1a welded to each other, the welding structure 12 is used for welding the two sections of cylinders 1a, two sides of the first bevel surface 12a1 are connected to the outer circumferential surface and the inner circumferential surface of one section of cylinder 1a, and two sides of the second bevel surface 12b1 are connected to the outer circumferential surface and the inner circumferential surface of the other section of cylinder 1 a. In this example, the opening of the welding region 12c faces the inside of the cylinder 1a or the inside of the adapter 20a, respectively.

Further, the first bevel face 12A1 includes a first bevel face a12a11 and a first bevel face B12a12 which are connected with each other and have an included angle of less than 180 °, the second bevel face 12B1 includes a second bevel face a12B11 and a second bevel face B12B12 which are connected with each other and have an included angle of less than 180 °, during welding, the first bevel face a12a11 and the second bevel face a12B11 are butted and jointed, and the first bevel face B12a12 and the second bevel face B12B12 are parallel to each other. Therefore, the space between the first bevel face B12a12 and the second bevel face B12B12 has a closing trend compared with the space between the first bevel face A12a11 and the second bevel face A12B11, the swing angle of the welding gun during welding is ensured, the size of the welding area 12c is further reduced, and the amount of filled metal is reduced.

In this example, the first bevel face a12a11 and the second bevel face a12b11 are further connected with arc segments 22 respectively, and during welding, the two arc segments 22 are butted to form a complete arc with a radius of 6-8 mm.

In the present embodiment, as shown in fig. 6, the above-mentioned high-pressure cooler further comprises two ultrasonic generators 13 disposed outside the housing 1, the two ultrasonic generators are located at two sides of the housing 1 in the horizontal direction, and are used for emitting ultrasonic waves to the high-pressure cooler outside the housing 1 to clean deposits in the heat exchange tubes 6, so that the high-efficiency heat exchange efficiency between the heat exchange tubes 6 and the cooling liquid in the housing 1 can be effectively maintained. Before the ultrasonic wave is emitted, the structure of the high-pressure cooler is checked with fixed frequency, the natural frequency of the heat exchange tube 6 and the shell 1 is checked, the natural frequency is marked in the range of 30% of the amplitude of the natural frequency, and then an ultrasonic generator with fixed frequency is selected.

Preferably, as shown in fig. 7, the high-pressure cooler further comprises a liquid treatment unit, the liquid treatment unit comprises a suspension condensation pool 14, an ion exchanger 15, an oxygen removal heater 16 and a pumping pump 17, a stirrer 14a is arranged in the suspension condensation pool 14, and the pumping pump 17 is used for pumping cooling liquid into the shell 1 from the shell side inlet 2 after sequentially pumping the cooling liquid through the suspension condensation pool 14, the ion exchanger 15 and the oxygen removal heater 16. The cooling liquid in the embodiment is cooling water, the cooling water passes through the suspension pool 14 and is stirred by a stirrer 14a, sludge is added and is stirred and then suspended, and suspended matters in the water are purified; an insecticide device can be added above the suspension condensation pool 14 to kill microorganisms in the materials and prevent the microorganisms from entering the high-pressure cooler; then sending the cooling water into an ion exchanger 15, replacing calcium and magnesium ions in the water, and changing hard water into soft water; and finally, delivering the soft water into the deoxygenation heater 16, heating the soft water, and reducing the oxygen content in the water to obtain the final purified water. The purified water is used, the corrosion problem of cooling liquid to equipment can be basically solved, the scaling problem in the equipment is reduced, the driving period can be prolonged by 1 period, the service life of the equipment is prolonged by about 4-5 years, and the purified water is particularly suitable for a flue gas cooler with the temperature of 320-560 ℃.

The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.

Claims

1. The utility model provides a high-pressure cooler, includes casing (1), set up on casing (1) and with casing (1) inner chamber be linked together be used for letting in cooling liquid's shell side import (2) and be used for leading out cooling liquid and cooling gas's shell side export (3) after the heat transfer, locate in casing (1) and along polylith baffling board (4) that the axial of casing (1) was arranged, set up in a plurality of mounting holes (5) on baffling board (4), locate in casing (1) and respectively correspond wear to locate a plurality of mounting holes (5) in many heat exchange tubes (6), set up on casing (1) and with many heat exchange tubes (6) be linked together be used for letting in high-temperature gas's tube side import (7) and be used for leading out low-temperature gas's tube side export (8), its characterized in that: the high-pressure cooler further comprises a notch (9) formed in the top of the baffle plate (4), a plurality of air holes (10) formed in the upper portion of the baffle plate (4) at intervals and located between the mounting holes (5), a plurality of blocks of air holes formed between the notch (9) in the baffle plate (4) and the inner wall of the shell (1) are combined into a first air channel, a plurality of blocks of air holes (10) in the baffle plate (4) are combined into a plurality of second air channels, and cooling air can flow in the first air channel and/or the second air channels in a matched mode.

2. A high-pressure cooler according to claim 1, characterized in that: the air holes (10) on the baffle plate can be arranged at intervals around the circumference of the mounting holes (5).

3. A high-pressure cooler according to claim 1, characterized in that: the arrangement area of the plurality of air holes (10) on the baffle plate (4) accounts for 1/3-1/2 of the total area of the baffle plate (4).

4. A high-pressure cooler according to claim 1, characterized in that: the distance between the baffle plates (4) is gradually increased along the direction from the shell side inlet (2) to the shell side outlet (3).

5. A high-pressure cooler according to claim 1, characterized in that: the shell (1) is arranged in an upward inclined mode along the horizontal direction, and the shell side inlet (2) and the shell side outlet (3) are sequentially arranged on the side wall of the shell (1) along the inclined direction of the shell (1).

6. A high-pressure cooler according to claim 5, characterized in that: the inclination angle of the shell (1) is 3-15 degrees.

7. A high-pressure cooler according to claim 5, characterized in that: the high-pressure cooler also comprises at least two supporting seats (11) which are arranged at the bottom of the shell (1) and used for supporting the shell (1), and the heights of the at least two supporting seats (11) are gradually increased along the direction from the shell side inlet (2) to the shell side outlet (3).

8. A high-pressure cooler according to claim 1, characterized in that: the high-pressure cooler further comprising a welded structure (12), the welded structure (12) comprising a first body and a second body, the first body having a first connection end (12 a), the second body having a second connection end (12 b), the first connection end (12 a) has a first bevel face (12 a 1) connected with both side faces of the first body, the second connection end (12 b) has a second bevel surface (12 b 1) connected to both side surfaces of the second body, a welding region (12 c) with one end open is formed between the first bevel face (12 a 1) and the second bevel face (12 b 1), the first bevel face (12 a 1) and the second bevel face (12 b 1) are butted and jointed, and the included angle between the first bevel face (12 a 1) and the second bevel face (12 b 1) is less than 10 °.

9. A high-pressure cooler according to claim 1, characterized in that: the high-pressure cooler also comprises at least two ultrasonic generators (13) arranged on the outer side of the shell (1).

10. A high-pressure cooler according to claim 1, characterized in that: the high-pressure cooler still includes the liquid processing unit, the liquid processing unit includes suspended condensation pond (14), ion exchanger (15), deoxidization heater (16) and pump (17), pump (17) are used for with cooling liquid draws in proper order through suspended condensation pond (14), ion exchanger (15) with behind deoxidization heater (16) certainly shell side import (2) are sent into in casing (1).