Combined external heat remover

Abstract

The invention relates to the technical field of external heat collectors, in particular to a combined external heat collector which comprises an external heat collector shell, a shell flange is fixed to the top of the external heat collector shell, the external heat collector shell is detachably connected with an equipment upper end socket through the shell flange, and a mounting flange is arranged at the top of the equipment upper end socket. A first heat removal pipe bundle is arranged at the upper end of the mounting flange in a penetrating mode and extends into the outer heat remover shell. According to the combined external heat remover, the control feeder, the two-stage series heat exchange units and the heat removal tube bundle of a double-flange structure are arranged, so that the heat transfer area can be effectively adjusted, the adjustment range of the heat removal load is widened, the heat removal load of the external heat remover can be flexibly adjusted within the range of 0-100%, and the heat removal efficiency of the external heat remover is improved. The combination of the feeding cover plate and the fluidizing air is adopted as a means for controlling and adjusting the heat taking load, operation is easy, adjustment is accurate, the air pressure head is low, and energy consumption is small. And the two groups of independent heat removal tube bundles enable the external heat remover to be convenient to install and overhaul.

Description

Technical Field

[0001] The invention relates to the technical field of external heat exchangers, and in particular to a combined external heat exchanger. Background Art

[0002] The catalyst feeding controller of the combined external heat exchanger controls the catalyst entering the external heat exchanger to achieve the purpose of controlling the amount of heat taken;

[0003] Controlling the feed amount of catalyst is an effective means to control the heat intake. Existing external heat exchangers do not control the feed. The shell of the external heat exchanger is completely filled with catalyst. The heat intake is adjusted by adjusting the density of the catalyst in the shell and the circulation amount of the catalyst in and out of the external heat exchanger. Summary of the invention

[0004] The purpose of the present invention is to provide a combined external heat exchanger, which adopts the arrangement of a control feeder, a two-stage series heat exchange unit and a heat extraction tube bundle of a double flange structure, can effectively adjust the heat transfer area, broaden the adjustment range of the heat extraction load, and enable the heat extraction load of the external heat exchanger to be flexibly adjusted within the range of 0 to 100%. The feed cover plate and fluidizing air combination are used as a means of controlling and adjusting the heat extraction load, which is simple to operate, accurate to adjust, low in wind pressure head, and low in energy consumption. Two independent heat extraction tube bundles make the external heat exchanger easy to install and repair, so as to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: a combined external heat exchanger, comprising an external heat exchanger shell, a shell flange is fixed on the top of the external heat exchanger shell, and the external heat exchanger shell is detachably connected to the upper head of the equipment through the shell flange, a mounting flange is arranged on the top of the upper head of the equipment, and a heat extraction tube bundle 1 is penetrated and arranged on the upper end of the mounting flange, and the heat extraction tube bundle 1 extends to the inside of the external heat exchanger shell;

[0006] A second heat extraction tube bundle is fixedly passed through the outer shell flange of the outer heat exchanger shell;

[0007] A gas distributor 1 and a gas distributor 2 connected in parallel are arranged on the outside of the external heat exchanger shell near the lower end;

[0008] A catalyst introduction pipe is connected and fixed to the outer side of the outer heat exchanger shell;

[0009] One end of the catalyst introduction pipe is connected to and fixed with a regenerator;

[0010] A connecting pipe is connected between the upper end cap of the equipment and the regenerator. The connecting pipe is arranged in an inverted V shape. The diameter of the connecting pipe ranges from Φ100 to 350 mm and is connected to the dilute phase section of the regenerator.

[0011] A feed controller is arranged between the catalyst introduction pipe and the regenerator.

[0012] Preferably, the external heat exchanger shell is internally provided with two heat exchange units connected in series, the two heat exchange units are distributed up and down, respectively, an upper circulation heat exchange unit and a lower circulation heat exchange unit, and the heat extraction tube bundle 1 and the heat extraction tube bundle 2 are connected to the upper circulation heat exchange unit and the lower circulation heat exchange unit.

[0013] Preferably, the upper circulation heat exchange unit is a circulation with catalyst, and the lower circulation heat exchange unit is a circulation without catalyst.

[0014] Preferably, the feed controller comprises a feed fluidizing air distributor, a feed hopper, a feed cover plate, an actuator, a push rod, a push pulley and a cover plate rotating ring, wherein a feed fluidizing air distributor is arranged at a position of the catalyst inlet pipe close to the regenerator.

[0015] Preferably, a feed hopper is fixed between the catalyst introduction tube and the regenerator, and a feed cover plate is hingedly connected to the top of the feed hopper, a push rod is hingedly connected to the side of the feed cover plate, and the push rod extends through the catalyst introduction tube.

[0016] Preferably, an actuator is fixed to the outside of the catalyst introduction pipe, and the actuator is a hydraulic cylinder, an electric push rod, or an air pump, and one end of the push rod is fixed to the output end of the actuator.

[0017] Preferably, a pushing pulley is rotatably connected to the outside of the catalyst introduction tube at a position corresponding to the pushing rod, and the pushing rod is in contact with and slidably connected to the pushing pulley.

[0018] Preferably, a cover plate rotating ring is fixed between the catalyst introduction pipe and the top of the feed cover plate, and the feed cover plate is rotatably connected to the catalyst introduction pipe through the cover plate rotating ring.

[0019] Preferably, a lifting air inlet is provided on the right side of the exterior of the external heat exchanger shell, and a catalyst circulation pipeline is fixed inside the external heat exchanger shell, and the catalyst circulation pipeline is connected to the lifting air inlet, and the other end of the catalyst circulation pipeline extends into the regenerator. The lifting air inlet connected to the catalyst circulation pipeline is in the middle of the external heat exchanger shell, passes through the inside of the catalyst introduction tube, and the other end is inserted into the dense phase section of the regenerator. The diameter range of the catalyst circulation pipeline is: Φ150~400mm.

[0020] Preferably, a back-mixing heat exchange unit is provided at the lower circulation heat exchange unit.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] This combined external heat exchanger adopts the settings of the control feeder, two-stage series heat exchange unit and double flange structure heat extraction tube bundle, which can effectively adjust the heat transfer area, broaden the adjustment range of the heat extraction load, and make the heat extraction load of the external heat exchanger flexibly adjustable within the range of 0-100%. The feed cover plate and fluidizing air combination are used as the means to control and adjust the heat extraction load, which is simple to operate, accurate to adjust, low wind pressure head and low energy consumption. Two independent heat extraction tube bundles make the external heat exchanger easy to install and repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is the overall structural view of the present invention;

[0025] Figure 2 It is a structural view of the feed controller of the present invention.

[0026] Description of reference numerals:

[0027] 1. Heat extraction tube bundle 1; 2. Mounting flange; 3. Upper end cap of equipment; 4. Heat extraction tube bundle 2; 5. Shell flange; 6. External heat exchanger shell; 7. Upper circulation heat exchange unit; 8. Gas distributor 1; 9. Gas distributor 2; 10. Back-mixing heat exchange unit; 11. Lifting air inlet; 12. Catalyst circulation pipeline; 13. Catalyst introduction pipe; 14. Connecting pipe; 15. Regenerator; 21. Feed fluidizing air distributor; 22. Feed hopper; 23. Feed cover plate; 24. Actuator; 25. Push rod; 26. Push pulley; 27. Cover plate rotating ring. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1 to Figure 2 , the present invention provides a technical solution:

[0030] A combined external heat exchanger comprises an external heat exchanger shell 6, a shell flange 5 is fixed to the top of the external heat exchanger shell 6, and the external heat exchanger shell 6 is detachably connected to an upper device head 3 through the shell flange 5, a mounting flange 2 is arranged on the top of the upper device head 3, and a heat extraction tube bundle 1 is penetrated through the upper end of the mounting flange 2, and the heat extraction tube bundle 1 extends to the inside of the external heat exchanger shell 6;

[0031] The outer shell flange 5 of the outer heat exchanger shell 6 is penetrated and fixed with a heat extraction tube bundle 2 4;

[0032] A gas distributor 1 8 and a gas distributor 2 9 connected in parallel are provided on the outside of the external heat exchanger shell 6 near the lower end;

[0033] A catalyst introduction pipe 13 is connected and fixed to the outer side of the outer heat exchanger shell 6;

[0034] One end of the catalyst introduction pipe 13 is connected to and fixed with a regenerator 15;

[0035] A connecting pipe 14 is connected between the upper end cap 3 of the equipment and the regenerator 15. The connecting pipe 14 is arranged in an inverted V shape. The diameter of the connecting pipe 14 ranges from Φ100 to 350 mm and is connected to the dilute phase section of the regenerator 15.

[0036] A feed controller is provided between the catalyst introduction pipe and the regenerator 15 .

[0037] The external heat exchanger shell 6 is internally provided with two heat exchange units connected in series, and the two heat exchange units are distributed up and down, namely an upper circulation heat exchange unit 7 and a lower circulation heat exchange unit, and the heat extraction tube bundle 1 and the heat extraction tube bundle 2 4 are connected with the upper circulation heat exchange unit 7 and the lower circulation heat exchange unit.

[0038] The upper circulation heat exchange unit 7 is a circulation with catalyst, and the lower circulation heat exchange unit is a circulation without catalyst.

[0039] The feed controller includes a feed fluidizing air distributor 21, a feed hopper 22, a feed cover plate 23, an actuator 24, a push rod 25, a push pulley 26 and a cover plate rotating ring 27, wherein the feed fluidizing air distributor 21 is arranged at a position of the catalyst inlet pipe 13 close to the regenerator 15.

[0040] A feed hopper 22 is fixed between the catalyst introduction pipe 13 and the regenerator 15 , and a feed cover plate 23 is hingedly connected to the top of the feed hopper 22 . A push rod 25 is hingedly connected to the side of the feed cover plate 23 . The push rod 25 extends through the catalyst introduction pipe 13 .

[0041] An actuator 24 is fixed to the outside of the catalyst introduction pipe 13 . The actuator 24 is a hydraulic cylinder, an electric push rod, or an air pump. One end of the push rod 25 is fixed to the output end of the actuator 24 .

[0042] A pushing pulley 26 is rotatably connected to the catalyst introduction tube 13 at a position corresponding to the pushing rod 25 , and the pushing rod 25 is in contact with and slidably connected to the pushing pulley 26 .

[0043] A cover plate rotating ring 27 is fixed between the catalyst introduction pipe 13 and the top of the feed cover plate 23 , and the feed cover plate 23 is rotatably connected to the catalyst introduction pipe 13 via the cover plate rotating ring 27 .

[0044] A lifting air inlet 11 is provided on the right side of the exterior of the external heat exchanger shell 6, and a catalyst circulation pipeline 12 is fixed inside the external heat exchanger shell 6, and the catalyst circulation pipeline 12 is connected to the lifting air inlet 11, and the other end of the catalyst circulation pipeline 12 extends into the regenerator 15. The lifting air inlet 11 connected to the catalyst circulation pipeline 12 is in the middle of the external heat exchanger shell 6, passes through the inside of the catalyst introduction pipe 13, and the other end is inserted into the dense phase section of the regenerator 15. The diameter range of the catalyst circulation pipeline 12 is: Φ150~400mm.

[0045] The lower circulation heat exchange unit is provided with a back-mixing heat exchange unit 10 .

[0046] Working principle: The catalyst feed controller consists of a feed fluidizing air distributor 21, a feed hopper 22, a feed cover plate 23, an actuator 24, a push rod 25, a push pulley 26 and a cover plate rotating ring 27.

[0047] The catalyst in the regenerator 15 enters the catalyst introduction pipe 13 through the feed hopper 22, and the feed amount is controlled by the feed cover plate 23. The actuator 24 drives the push pulley 26 to move through the push rod 25 to control the opening of the feed cover plate 23. The catalyst in the regenerator 15 enters the feed hopper 22 after passing through the feed cover plate 23. The feed fluidizing air distributor 21 in the feed hopper 22 introduces fluidizing air, so that the catalyst in the feed hopper 22 is fully fluidized and enters the external heat exchanger shell 6 through the catalyst introduction pipe 13 without catalyst circulation.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A combined external heat exchanger, comprising an external heat exchanger housing (6), characterized in that: A shell flange (5) is fixed to the top of the external heat exchanger shell (6), and the external heat exchanger shell (6) is detachably connected to the upper end cover (3) of the equipment via the shell flange (5); a mounting flange (2) is provided on the top of the upper end cover (3) of the equipment, and a heat extraction tube bundle (1) is provided through the upper end of the mounting flange (2); and the heat extraction tube bundle (1) extends into the interior of the external heat exchanger shell (6); A second heat extraction tube bundle (4) is fixedly passed through the outer shell flange (5) of the outer heat exchanger shell (6); A gas distributor 1 (8) and a gas distributor 2 (9) connected in parallel are provided through the outer portion of the outer heat exchanger shell (6) near the lower end; A catalyst introduction pipe (13) is connected and fixed to one side of the exterior of the external heat exchanger shell (6); One end of the catalyst introduction pipe (13) is connected to and fixed with a regenerator (15); A connecting pipe (14) is connected between the upper end cap (3) of the equipment and the regenerator (15). The connecting pipe (14) is arranged in an inverted V shape. The connecting pipe (14) has a diameter ranging from Φ100 to 350 mm and is connected to the dilute phase section of the regenerator (15). A feed controller is provided between the catalyst introduction pipe (13) and the regenerator (15).

2. A combined external heat exchanger according to claim 1, characterized in that: The outer heat exchanger shell (6) is internally provided with two heat exchange units connected in series, the two heat exchange units are distributed up and down, and are respectively an upper circulation heat exchange unit (7) and a lower circulation heat exchange unit, and the heat extraction tube bundle 1 (1) and the heat extraction tube bundle 2 (4) are connected to the upper circulation heat exchange unit (7) and the lower circulation heat exchange unit.

3. A combined external heat exchanger according to claim 2, characterized in that: The upper circulation heat exchange unit (7) is a circulation with a catalyst, and the lower circulation heat exchange unit is a circulation without a catalyst.

4. A combined external heat exchanger according to claim 3, characterized in that: The feed controller comprises a feed fluidizing air distributor (21), a feed hopper (22), a feed cover plate (23), an actuator (24), a push rod (25), a push pulley (26) and a cover plate rotating ring (27), wherein the feed fluidizing air distributor (21) is arranged at a position of the catalyst introduction pipe (13) close to the regenerator (15).

5. A combined external heat exchanger according to claim 4, characterized in that: A feed hopper (22) is fixed between the catalyst introduction tube (13) and the regenerator (15), and a feed cover plate (23) is hingedly connected to the top of the feed hopper (22), and a push rod (25) is hingedly connected to the side of the feed cover plate (23), and the push rod (25) extends through the catalyst introduction tube (13).

6. A combined external heat exchanger according to claim 5, characterized in that: An actuator (24) is fixed outside the catalyst introduction pipe (13). The actuator (24) is a hydraulic cylinder, an electric push rod, or an air pump. One end of the push rod (25) is fixed to the output end of the actuator (24).

7. A combined external heat exchanger according to claim 6, characterized in that: A pushing pulley (26) is rotatably connected to the catalyst introduction tube (13) at a position corresponding to the pushing rod (25), and the pushing rod (25) is in contact with and slidably connected to the pushing pulley (26).

8. A combined external heat exchanger according to claim 7, characterized in that: A cover plate rotating ring (27) is fixed between the catalyst introduction pipe (13) and the top of the feed cover plate (23), and the feed cover plate (23) is rotatably connected to the catalyst introduction pipe (13) via the cover plate rotating ring (27).

9. A combined external heat exchanger according to claim 8, characterized in that: The right side of the outer shell of the external heat exchanger (6) is provided with a lifting air inlet (11), and a catalyst circulation pipeline (12) is fixed inside the outer shell of the external heat exchanger (6), and the catalyst circulation pipeline (12) is connected to the lifting air inlet (11), and the other end of the catalyst circulation pipeline (12) extends into the regenerator (15). The lifting air inlet (11) connected to the catalyst circulation pipeline (12) is located in the middle of the outer shell of the external heat exchanger (6), passes through the inside of the catalyst introduction pipe (13), and the other end is inserted into the dense phase section of the regenerator (15). The diameter range of the catalyst circulation pipeline (12) is: Φ150-400mm.

10. A combined external heat exchanger according to claim 9, characterized in that: The lower circulation heat exchange unit is provided with a back-mixing heat exchange unit (10).

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