CN213131982U

CN213131982U - Heat recovery device of negative pressure rectifying tower

Info

Publication number: CN213131982U
Application number: CN202021466214.5U
Authority: CN
Inventors: 杨德俭; 赵冰; 王守顺
Original assignee: Panjin Ruide Chemical Co ltd
Current assignee: Panjin Ruide Chemical Co ltd
Priority date: 2020-07-23
Filing date: 2020-07-23
Publication date: 2021-05-07
Anticipated expiration: 2030-07-23

Abstract

The utility model relates to a rectifying column technical field just discloses a negative pressure rectifying column heat recovery device, comprising a tower body, the left side intercommunication of tower body has the inlet pipe, the inside fixedly connected with sieve of tower body, the one end fixedly connected with overflow plate of sieve, the top intercommunication of tower body has the push pipe, the one end that the tower body was kept away from to the push pipe communicates with the input of heat exchanger, the left side intercommunication of heat exchanger has the water treatment ware, the output intercommunication of heat exchanger has the discharging pipe, the left end that the outside of discharging pipe and the outside of tower body pass through pipe intercommunication and pipe is located the top of sieve. This negative pressure rectifying column heat reclamation device possesses advantages such as reuse, and the steam of having solved current negative pressure rectifying column top all cools down backward flow or condenses out the liquid product through indirect heating equipment, and indirect heating equipment's refrigerant uses the pure water mostly, and the pure water absorbs the direct emission of heat behind the heat exchanger, leads to the extravagant problem of energy.

Description

Heat recovery device of negative pressure rectifying tower

Technical Field

The utility model relates to a rectifying column technical field specifically is a negative pressure rectifying column heat recovery unit.

Background

The rectifying tower is a tower-type gas-liquid contact equipment for rectification, and utilizes the property that every component in the liquid mixture has different volatility, i.e. the vapour pressure of every component is different at the same temp., so that the light component low-boiling-point substance in the liquid phase can be transferred into gas phase, and the heavy component in the gas phase can be transferred into liquid phase so as to implement separation.

Steam at the top of the negative pressure rectifying tower in the market at present is cooled down and flows back or is condensed out liquid products through heat exchange equipment, and heat exchange equipment's refrigerant mostly uses pure water, and the pure water absorbs heat direct discharge behind the heat exchanger, leads to energy waste, so proposes a negative pressure rectifying tower heat reclamation device and solves the above-mentioned problem of proposing.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a negative pressure rectifying column heat recovery device possesses advantages such as reuse, and the steam of having solved current negative pressure rectifying column top all cools down backward flow or condensation through indirect heating equipment and goes out the liquid product, and indirect heating equipment's refrigerant uses the pure water mostly, and the pure water absorbs the direct emission of heat behind the heat exchanger, leads to the extravagant problem of energy.

(II) technical scheme

In order to realize the purpose of the above reuse, the utility model provides the following technical scheme: a heat recovery device of a negative pressure rectifying tower comprises a tower body, wherein the left side of the tower body is communicated with a feeding pipe, the inside of the tower body is fixedly connected with a sieve plate, one end of the sieve plate is fixedly connected with an overflow plate, the top of the tower body is communicated with a top pipe, one end, away from the tower body, of the top pipe is communicated with the input end of a heat exchanger, the left side of the heat exchanger is communicated with a water treatment device, the output end of the heat exchanger is communicated with a discharging pipe, the outer side of the discharging pipe and the outer side of the tower body are communicated through a guide pipe, the left end of the guide pipe is positioned above the sieve plate, the bottom of the tower body is communicated with a bottom pipe, one end, away from the tower body, of the bottom pipe is communicated with the output end of a reboiler, the input end of the reboiler and the outer side of the tower body are communicated through a circular pipe, the left end of the, the top of the ring pipe is communicated with the right side of the heat exchanger through a connecting pipe.

Preferably, the sieve plates are distributed in a staggered mode, and the height of the tops of the overflow plates is higher than that of the tops of the sieve plates.

Preferably, the connecting pipe is a polyurethane heat-insulating pipe, the outside of the shell is fixedly connected with a pipe communicated with the bottom of the ring pipe, and the inside of the shell is filled with alcohol.

Preferably, the output end of the reboiler is fixedly connected with a blanking pipe, and the left side of the water treatment device is communicated with a water inlet pipe.

Preferably, the outer side of the shell is provided with a mounting hole matched with the input end of the reboiler, and the outer side of the shell is provided with a connecting hole matched with the output end of the reboiler.

Preferably, the ring pipe is in a spiral shape and is a copper pipe.

(III) advantageous effects

Compared with the prior art, the utility model provides a negative pressure rectifying column heat recovery device possesses following beneficial effect:

the heat recovery device of the negative pressure rectifying tower comprises a shell, a feeding pipe, a reboiler, a heat exchanger, a water treatment device, a pipe, a sieve plate, a top pipe, a water treatment device, a pipe, a heat recovery device, a pipe, a, the reboiler is assisted to work, and the external pure water discharged from the loop can be used for cooling the heat exchanger through the processor again, so that the aim of reutilization is fulfilled.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention;

FIG. 2 is a schematic structural view of the present invention;

fig. 3 is a top sectional view of the overflow plate of the present invention.

In the figure: the system comprises a tower body 1, a feeding pipe 2, a sieve plate 3, an overflow plate 4, a top pipe 5, a heat exchanger 6, a water treatment device 7, a discharging pipe 8, a guide pipe 9, a bottom pipe 10, a reboiler 11, a circular pipe 12, a shell sleeve 13, a ring pipe 14 and a connecting pipe 15.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, a heat recovery device for a negative pressure distillation column comprises a column body 1, a feeding pipe 2 is communicated with the left side of the column body 1, a sieve plate 3 is fixedly connected inside the column body 1, an overflow plate 4 is fixedly connected to one end of the sieve plate 3, the sieve plate 3 is in staggered distribution, the top of the overflow plate 4 is higher than the top of the sieve plate 3, a top pipe 5 is communicated with the top of the column body 1, one end of the top pipe 5 far away from the column body 1 is communicated with an input end of a heat exchanger 6, a water treatment device 7 is communicated with the left side of the heat exchanger 6, an output end of the heat exchanger 6 is communicated with a discharging pipe 8, the outer side of the discharging pipe 8 is communicated with the outer side of the column body 1 through a guide pipe 9, the left end of the guide pipe 9 is positioned above the sieve plate 3, a bottom pipe 10 is communicated with the bottom of the column body, the left side of the water processor 7 is communicated with a water inlet pipe, the input end of the reboiler 11 is communicated with the outer side of the tower body 1 through a round pipe 12, the left end of the round pipe 12 is positioned below the sieve plate 3, the outer part of the reboiler 11 is fixedly connected with a shell sleeve 13, the outer side of the shell sleeve 13 is provided with a mounting hole matched with the input end of the reboiler 11, the outer side of the shell sleeve 13 is provided with a connecting hole matched with the output end of the reboiler 11, the inner part of the shell sleeve 13 is fixedly connected with a ring pipe 14 which is positioned at the outer side of the reboiler 11 and two ends of which penetrate through the shell sleeve 13, the connecting pipe 15 is a polyurethane heat-insulating pipe, the outer part of the shell sleeve 13 is fixedly connected with a pipe communicated with the bottom of the ring pipe 14, the inner part of the shell sleeve 13 is filled with alcohol, the top of the ring pipe 14 is communicated, external liquid reaches the inside of the reboiler 11 through the round pipe 12, when the reboiler 11 works, the reboiler 11 gasifies the external liquid and enters the inside of the tower body 1 through the bottom pipe 10, the gasified external liquid passes through the sieve plate 3 and reaches the inside of the heat exchanger 6 through the top pipe 5, so that the external pure water for cooling enters the inside of the heat exchanger 6 through the water treatment device 7, the water treatment device 7 can avoid scaling after the external pure water is heated, the external pure water cools the gasified external liquid, the external liquid is refluxed into the inside of the tower body 1 from the guide pipe 9 and is further purified and separated, the heated external pure water reaches the inside of the ring pipe 14 through the connecting pipe 15, the ring pipe 14 transfers the heat of the external pure water to the alcohol inside the shell sleeve 13, the reboiler 14 is in a spiral shape, so that the heat of the external pure water can be fully transferred to the alcohol inside the, the auxiliary reboiler 11 is operated and the pure external water from loop 14 is again passed through the processor 7 for cooling in the heat exchanger 6 for re-use.

In summary, in the heat recovery device for a negative pressure distillation column, external liquid enters the interior of the column body 1 from the feeding pipe 2, and the external liquid reaches the interior of the reboiler 11 through the circular pipe 12, when the reboiler 11 operates, the reboiler 11 gasifies the external liquid and enters the interior of the column body 1 from the bottom pipe 10, the gasified external liquid passes through the sieve plate 3 and reaches the interior of the heat exchanger 6 through the top pipe 5, so that external cooling pure water enters the interior of the heat exchanger 6 through the water treatment device 7, the water treatment device 7 can prevent the external pure water from scaling after being heated, the external pure water cools the gasified external liquid, so that the external liquid flows back to the interior of the column body 1 from the conduit 9, further purification and separation are performed, the heated external pure water reaches the interior of the loop pipe 14 through the connecting pipe 15, the loop pipe 14 transfers the heat of the external pure water to the alcohol inside the casing 13, the loop pipe 14 is in a spiral shape, alcohol plays heat retaining effect to the reboiler 11 outside, supplementary reboiler 11 work, external pure water from ring canal 14 exhaust can be used for heat exchanger 6 to cool off through treater 7 once more, thereby the purpose of reuse has been reached, the steam of having solved current negative pressure rectifying column top all cools down backward flow or condensation through indirect heating equipment goes out liquid product, indirect heating equipment's refrigerant uses pure water mostly, the pure water absorbs heat direct discharge behind heat exchanger 6, lead to the extravagant problem of energy.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a negative pressure rectifying column heat reclamation device, includes tower body (1), its characterized in that: the left side intercommunication of tower body (1) has inlet pipe (2), the inside fixedly connected with sieve (3) of tower body (1), the one end fixedly connected with overflow plate (4) of sieve (3), the top intercommunication of tower body (1) has push pipe (5), the one end that tower body (1) was kept away from in push pipe (5) communicates with the input of heat exchanger (6), the left side intercommunication of heat exchanger (6) has water treatment ware (7), the output intercommunication of heat exchanger (6) has discharging pipe (8), the left end that pipe (9) intercommunication and pipe (9) are located in the top of sieve (3) is passed through in the outside of discharging pipe (8) and tower body (1), the bottom intercommunication of tower body (1) has bottom tube (10), the one end that tower body (1) was kept away from in bottom tube (10) communicates with the output of reboiler (11), the input of reboiler (11) and the outside of tower body (1) are passed through pipe (12) intercommunication and pipe (12) and pipe (10) intercommunication, and (12) the left end of the reboiler is located below the sieve plate (3), the outer part of the reboiler (11) is fixedly connected with a shell sleeve (13), the inner part of the shell sleeve (13) is fixedly connected with a ring pipe (14) which is located on the outer side of the reboiler (11) and two ends of which penetrate through the shell sleeve (13), and the top of the ring pipe (14) is communicated with the right side of the heat exchanger (6) through a connecting pipe (15).

2. The negative pressure rectification tower heat recovery device according to claim 1, characterized in that: the sieve plates (3) are distributed in a staggered mode, and the height of the tops of the overflow plates (4) is higher than that of the tops of the sieve plates (3).

3. The negative pressure rectification tower heat recovery device according to claim 1, characterized in that: the connecting pipe (15) is a polyurethane heat-insulating pipe, the outer part of the shell sleeve (13) is fixedly connected with a pipe communicated with the bottom of the ring pipe (14), and alcohol is filled in the shell sleeve (13).

4. The negative pressure rectification tower heat recovery device according to claim 1, characterized in that: the output end of the reboiler (11) is fixedly connected with a blanking pipe, and the left side of the water treatment device (7) is communicated with a water inlet pipe.

5. The negative pressure rectification tower heat recovery device according to claim 1, characterized in that: the outer side of the shell sleeve (13) is provided with a mounting hole matched with the input end of the reboiler (11), and the outer side of the shell sleeve (13) is provided with a connecting hole matched with the output end of the reboiler (11).

6. The negative pressure rectification tower heat recovery device according to claim 1, characterized in that: the ring pipe (14) is in a spiral shape, and the ring pipe (14) is a copper pipe.