Air separation plant with steam recycling function

Abstract

The utility model discloses an air separation plant with a steam recycling function, which comprises a tower body, a discharge pipe is fixed at the upper end of the tower body, a feed pipe is fixed at the right side of the tower body close to the lower end, a plurality of uniformly arranged heat-conducting plates are arranged on the inner side of the tower body, and the inner sides of the heat-conducting plates are hollow. An air inlet pipe is transversely inserted in the position, close to the upper end, of the tower body, the left end of the air inlet pipe penetrates through the heat conduction plates, multiple air outlet holes are formed in the positions, penetrating through the heat conduction plates, of the air inlet pipe, a base communicated with the heat conduction plates is fixed to the lower end of the tower body, and the inner side of the base is hollow. According to the utility model, steam is sent to each heat conducting plate for heating through the air inlet pipe, at the moment, liquid air is guided into the inner side of the tower body through the feeding pipe, and large-area rapid heating is realized when the liquid air is filled in gaps among the plurality of heat conducting plates and flows through the gaps; and meanwhile, the liquid air can be heated more uniformly through simultaneous heating of the multiple heat conducting plates.

Description

Technical Field

[0001] The utility model relates to the technical field of air separation equipment, in particular to an air separation equipment with a steam recovery and utilization function. Background Art

[0002] Air separation equipment needs to be distilled during the nitrogen production process, and the distillation tower will waste a lot of time and electricity during the heating process. In addition, high-temperature water vapor will be generated during the nitrogen production process. If the water vapor is directly removed, a large amount of heat will be lost. Therefore, the steam needs to be recovered and utilized.

[0003] The Chinese patent with the announcement number CN210399703U discloses an air separation device with a steam recovery function, including a tower body and a box body, the surface of the inner cavity is surrounded by an annular pipe, the inside of the box body is provided with a collection tank, the bottom of the mounting plate is provided with a filter bag through a fixing frame, the top of the mounting plate is provided with a fixing rod through a mounting frame, both ends of the fixing rod are provided with a sphere, an exhaust fan is provided on the top of the box body, the output end of the exhaust fan is connected to the box body below the mounting plate through an exhaust pipe, a motor is provided on the top of the box body, a turntable is provided on the output end of the motor, a connecting rod is provided on the outside of the turntable, one end of the connecting rod is provided with an extension rod, and one end of the extension rod is connected to the sphere. The utility model solves the problem that the existing equipment does not have a dust removal function and a steam recovery function by providing an annular pipe, a collection tank, a filter bag, an exhaust fan, a sphere and a motor structure.

[0004] The above-mentioned air separation equipment with steam recovery function utilizes steam to pass through the annular pipe and allows the annular pipe to transfer heat to the surface of the inner cavity, thereby facilitating the increase of the temperature inside the inner cavity and realizing the preheating of the tower body. This heating method can only make the air on the outermost side close to the annular pipe be heated first and then transferred to the inside. The entire heating method is uneven and it is impossible to heat the air evenly over a large area. Utility Model Content

[0005] In order to solve the problem that an air separation device with a steam recovery function cannot heat air uniformly over a large area, the present application provides an air separation device with a steam recovery function, which adopts the following technical solution:

[0006] An air separation device with a steam recovery and utilization function comprises a tower body, a discharge pipe is fixed to the upper end of the tower body, and a feed pipe is fixed to the right side of the tower body near the lower end, a plurality of evenly arranged heat conduction plates are arranged on the inner side of the tower body, and the inner sides of the heat conduction plates are hollow, an air inlet pipe is transversely arranged near the upper end of the tower body, and the left end of the air inlet pipe penetrates the plurality of heat conduction plates, and a plurality of air outlets are provided at the positions where the air inlet pipe passes through the heat conduction plates, a base connected to the plurality of heat conduction plates is fixed to the lower end of the tower body, and the inner side of the base is hollow, a discharge pipe and an exhaust pipe are respectively fixed to the left and right sides of the base, and a plurality of air ducts are transversely penetrated at the positions corresponding to the plurality of heat conduction plates and the feed pipe.

[0007] Optionally, a card platform is fixed to the upper end of the base, and a plurality of evenly arranged sockets are provided on the upper surface of the card platform.

[0008] Optionally, mounting holes are provided on both sides of the tower body near the upper end, and locking screws are threadedly installed on both sides of the tower body near the lower end and are tightened against the side of the card table.

[0009] Optionally, a plug is fixed to the lower end of the heat conducting plate, and the lower end of the plug is inserted into the plug hole.

[0010] Optionally, a sleeve hole is provided near the upper end of the heat conducting plate, and the inner diameter of the sleeve hole is the same as the outer diameter of the air inlet pipe.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, steam is sent to each heat conduction plate for heating through an air inlet pipe. At this time, a feed pipe introduces liquid air into the inner side of the tower body. Liquid air fills the gaps between a plurality of heat conduction plates and flows through to achieve rapid heating over a large area. Simultaneous heating of a plurality of heat conduction plates can make the heating of liquid air more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a cross-sectional view of an air separation device with steam recovery and utilization function of the utility model;

[0015] Figure 2 It is a schematic diagram of a base of an air separation device with a steam recovery and utilization function shown in the utility model;

[0016] Figure 3 It is a tower schematic diagram of an air separation device with steam recovery and utilization function shown in the utility model;

[0017] Figure 4 The utility model is a schematic diagram of a heat conduction plate of an air separation device with a steam recovery and utilization function.

[0018] In the figure: 1. discharge pipe; 2. tower body; 21. mounting hole; 22. locking screw; 3. heat conduction plate; 31. sleeve hole; 32. air duct; 33. insert pipe; 4. drain pipe; 5. base; 51. card table; 52. insert hole; 6. exhaust pipe; 7. feed pipe; 8. air inlet pipe; 81. air outlet. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is claimed, but merely represents selected embodiments of the utility model.

[0020] Please refer to Figure 1 and Figure 4 As shown, an air separation device with steam recovery and utilization function includes a tower body 2, a discharge pipe 1 is fixed at the upper end of the tower body 2, and a feed pipe 7 is fixed on the right side of the tower body 2 near the lower end, a plurality of evenly arranged heat conducting plates 3 are arranged on the inner side of the tower body 2, and the inner side of the heat conducting plates 3 is hollow, an air inlet pipe 8 is horizontally inserted near the upper end of the tower body 2, and the left end of the air inlet pipe 8 passes through the plurality of heat conducting plates 3, and a plurality of air outlet holes 81 are opened at the positions where the air inlet pipe 8 passes through the heat conducting plates 3, and a plurality of air outlet holes 81 are opened at the lower end of the tower body 2. The base 5 is hollow inside, a drain pipe 4 and an exhaust pipe 6 are fixed on the left and right sides of the base 5 respectively, multiple heat conducting plates 3 and the positions corresponding to the feed pipe 7 are each provided with multiple air ducts 32 running horizontally, steam is sent to each heat conducting plate 3 for heating through the air inlet pipe 8, at this time, the feed pipe 7 introduces liquid air into the inner side of the tower body 2, and the liquid air is filled in the gaps between the multiple heat conducting plates 3 and flows through to achieve rapid heating of a large area, and the simultaneous heating of the multiple heat conducting plates 3 can make the heating of the liquid air more uniform.

[0021] Please refer to Figure 2As shown, a clamping platform 51 is fixed to the upper end of the base 5 for being inserted into the lower port of the tower body 2 for installation, and a plurality of evenly arranged plug holes 52 are provided on the upper surface of the clamping platform 51 for inserting the plug tube 33 to realize the positioning installation of the heat conducting plate 3.

[0022] Please refer to Figure 3 As shown, mounting holes 21 are provided on both sides of the tower body 2 near the upper end for installing the air intake pipe 8, and locking screws 22 are threadedly installed on both sides of the tower body 2 near the lower end, which are pressed against the side of the clamping platform 51, and the clamping platform 51 is locked and fixed by the locking screws 22 pressed against the clamping platform 51.

[0023] Please refer to Figure 4 As shown, a plug 33 is fixed to the lower end of the heat conducting plate 3 for installation on the base 5, and the lower end of the plug 33 is inserted in the socket 52 to achieve installation and connection. A sleeve hole 31 is opened near the upper end of the heat conducting plate 3 for sleeve connection with the air inlet pipe 8, and the inner diameter of the sleeve hole 31 is the same as the outer diameter of the air inlet pipe 8 to better achieve a sealing fit of the sleeve connection.

[0024] Working principle: When nitrogen is produced, steam is sent into the inner side of the heat conducting plate 3 through the air inlet pipe 8 and flows downward to heat the heat conducting plate 3. At this time, the feed pipe 7 sends liquid air into the inner side of the tower body 2, and the multiple heat conducting plates 3 heat the liquid air for distillation. At this time, the downward flowing steam is cooled and condensed while heating the liquid air. The condensed water droplets are concentrated on the inner side of the base 5 and discharged through the drain pipe 4. At the same time, the uncondensed gas is discharged through the exhaust pipe 6.

[0025] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. An air separation plant with steam recovery function, comprising a tower body (2), characterized in that: A discharge pipe (1) is fixed at the upper end of the tower body (2), and a feed pipe (7) is fixed on the right side of the tower body (2) near the lower end. A plurality of evenly arranged heat conducting plates (3) are arranged on the inner side of the tower body (2), and the inner side of the heat conducting plates (3) is hollow. An air intake pipe (8) is transversely inserted near the upper end of the tower body (2), and the left end of the air intake pipe (8) passes through the plurality of heat conducting plates (3). The positions where the air intake pipe (8) passes through the heat conducting plates (3) are provided with a plurality of air outlet holes (81). A base (5) connected to the plurality of heat conducting plates (3) is fixed at the lower end of the tower body (2), and the inner side of the base (5) is hollow. A discharge pipe (4) and an exhaust pipe (6) are fixed on the left and right sides of the base (5), respectively. The positions corresponding to the plurality of heat conducting plates (3) and the feed pipe (7) are transversely penetrated by a plurality of air ducts (32).

2. The air separation plant with steam recovery function according to claim 1, characterized in that: A card platform (51) is fixed on the upper end of the base (5), and a plurality of evenly arranged insertion holes (52) are provided on the upper surface of the card platform (51).

3. The air separation plant with steam recovery function according to claim 2, characterized in that: The tower body (2) is provided with mounting holes (21) on both sides near the upper end, and the tower body (2) is provided with locking screws (22) threadedly mounted on both sides near the lower end and pressed against the side of the clamping platform (51).

4. The air separation plant with steam recovery function according to claim 2, characterized in that: An insert tube (33) is fixed to the lower end of the heat conducting plate (3), and the lower end of the insert tube (33) is inserted into the insert hole (52).

5. The air separation plant with steam recovery function according to claim 4, characterized in that: The heat conducting plate (3) is provided with a sleeve hole (31) near the upper end, and the inner diameter of the sleeve hole (31) is the same as the outer diameter of the air inlet pipe (8).

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