Sleeve type condenser and concentrated sleeve type condensation solvent recovery system

Abstract

The utility model belongs to the technical field of solvent secondary steam condensation recovery, and discloses a sleeve type condenser. During use, solvent steam enters an interlayer of the inner pipe and the outer pipe, cooling water is located in the inner pipe and in a cavity formed by the outer pipe and the shell, heat exchange is conducted between the solvent steam and the cooling water, the temperature is lowered, and the solvent steam is rapidly condensed into liquid. The double-face condensation structure of the inner pipe and the outer pipe increases the heat exchange area, and is high in heat exchange efficiency, good in condensation effect, simple in structure and easy to obtain materials. In addition, the utility model further discloses a concentration sleeve type condensation solvent recovery system which comprises a heater, a first gas-liquid separator, a cooler and a recovery tank. Solvent secondary steam enters the sleeve type condenser to be condensed, the condensed solvent condensate flows into the cooler from the bottom of the sleeve type condenser to be further cooled and finally flows into the recovery tank to be collected, and in the whole process, the heat utilization rate is high, the condensation effect is good, the solvent recovery rate is high, operation is easy and convenient, and cyclic operation can be achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to solvent secondary steam condensation recovery technical field relates to a double -pipe condenser and concentration double -pipe condensing solvent recovery system. BACKGROUND

[0002] The common concentrator recovery system adopts vertical tube single surface condenser at present, this condensing system is through vertical tube condenser and carries out single surface heat exchange, and the medium of inside and outside heat exchange pipe is secondary steam and cooling water respectively, and the secondary steam heat of concentration unit evaporation is brought into cooling water through heat exchange pipe, reaches the purpose of recovery condensate. But the existing vertical tube single surface condenser has following problem: (1) poor condensation effect: condensation heat exchange efficiency is low and cooling water scale is not easy to clean. (2) complex structure and high cost: this structure needs to set up condenser as double -trip, and the parts such as partition and flange tube plate increase, and the processing requirement is more strict;Adopting tube condenser heat exchange, the condensation area needed is larger;Because adopting multiple components split type combination installation, the raw material steel consumption of equipment is higher.

[0003] Therefore, the applicant specifically proposes the utility model. CONTENT OF UTILITY MODEL

[0004] The utility model discloses a double -pipe condenser and concentration double -pipe condensing solvent recovery system can solve the problem of poor condensation effect and complex structure and high cost of vertical tube single surface condenser, realize the double -sided efficient condensation and recovery of solvent secondary steam.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A double -pipe condenser, including the casing, the top of casing is provided with cooling water upper pipe box, the outer wall upper portion of casing is provided with secondary steam inlet pipe,

[0007] A plurality of inner tubes and outer tubes are arranged in the casing in a vertical direction, the outer tube is sleeved on the outside of the inner tube, the inner tube forms a first cooling water channel, and a cavity formed between the outer tube and the inner tube is used for containing solvent steam, a plurality of tube plates are also arranged in the casing in a vertical direction,

[0008] One end of the first cooling water channel and the second cooling water channel is communicated with the cooling water upper pipe box, and the other end is communicated with the cooling water;

[0009] The solvent steam entering the secondary steam inlet pipe is condensed by the cooling water in the cavity, the first cooling water channel and the second cooling water channel, and forms solvent condensate, which is discharged through the first condensate outlet pipe.

[0010] Further, the tube plate comprises a first outer tube plate and a second outer tube plate, the second outer tube plate is arranged at the connection between the cooling water upper tube box and the shell, the first outer tube plate is arranged at the bottom of the shell, a plurality of inner tubes are vertically arranged between the first outer tube plate and the second outer tube plate, the upper end of the inner tube is communicated with the cooling water upper tube box, and the lower end of the inner tube is communicated with cooling water.

[0011] Further, the tube plate further comprises a first inner tube plate and a second inner tube plate, the first inner tube plate and the second inner tube plate are fixedly arranged in the vertical direction inside the shell, and a plurality of outer tubes are vertically arranged between the first inner tube plate and the second inner tube plate.

[0012] The upper part of the outer tube is communicated with a first cavity composed of the second outer tube plate, the second inner tube plate and the inner wall of the shell, and the lower part of the outer tube is communicated with a second cavity composed of the first outer tube plate, the first inner tube plate and the inner wall of the shell.

[0013] Further, a first water guide pipe is arranged between the first outer tube plate and the first inner tube plate, and a second water guide pipe is arranged between the second outer tube plate and the second inner tube plate, the first water guide pipe is communicated with the cooling water upper tube box, and the second water guide pipe is communicated with cooling water.

[0014] The outer wall of the outer tube, the first inner tube plate, the second inner tube plate and the inner wall of the shell form a third cavity, and the first water guide pipe, the third cavity and the second water guide pipe form a second cooling water channel.

[0015] Further, the secondary steam inlet pipe is located between the second outer tube plate and the second inner tube plate, and the first condensed liquid outlet pipe is located between the first outer tube plate and the first inner tube plate, and the first condensed liquid outlet pipe is communicated with the first condensed liquid inlet pipe in the cooler.

[0016] Further, the lower part of the shell is connected with the upper part of the cooler through a flange.

[0017] Further, the top of the cooling water upper tube box is provided with a water outlet pipe.

[0018] Further, the first outer tube plate, the second outer tube plate, the first inner tube plate and the second inner tube plate are arranged in parallel with each other.

[0019] Further, the application further provides a concentrated double-pipe condenser solvent recovery system, which comprises a heater, a first gas-liquid separator, a double-pipe condenser, a cooler and a recovery tank, the top of the heater is communicated with the middle part of the first gas-liquid separator, the bottom of the heater is communicated with the bottom of the first gas-liquid separator; the top of the first gas-liquid separator is communicated with the secondary steam inlet pipe in the double-pipe condenser, and the second condensed liquid outlet pipe in the cooler is communicated with the recovery tank.

[0020] Further, the first gas-liquid separator and the double-pipe condenser are further provided with a second gas-liquid separator, the middle part of the second gas-liquid separator is communicated with the top part of the first gas-liquid separator, the bottom part of the second gas-liquid separator is communicated with the middle part of the first gas-liquid separator, and the top part of the second gas-liquid separator is communicated with the secondary steam inlet pipe.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] 1. The double-pipe condenser is used, solvent steam enters the interlayer of the inner pipe and the outer pipe, cooling water is respectively arranged in the inner pipe and the cavity formed by the outer pipe and the shell, heat exchange is carried out between the solvent steam and the cooling water, the temperature is reduced, and the solvent steam is rapidly condensed into liquid.

[0023] 2. The concentrated double-pipe condensing solvent recovery system is used, solvent steam enters the double-pipe condenser to be condensed, the condensed solvent condensate flows from the bottom of the double-pipe condenser into the cooler to be further cooled, and finally flows into the recovery tank to be collected, in the whole process, heat utilization rate is high, condensation effect is good, and therefore the solvent recovery rate is improved, operation is simple, and the system can be circularly operated. BRIEF DESCRIPTION OF DRAWINGS

[0024] The drawings incorporated into the specification and forming a part thereof, together with the specification, serve to explain the principle of the utility model.

[0025] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows, and obviously, other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 It is a structural schematic view of the double-pipe condenser of the utility model;

[0027] Figure 2 It is a structural schematic view of the double-pipe condenser of the utility model; Figure 1 It is a partial enlarged view of A in the figure;

[0028] Figure 3 It is a structural schematic view of the concentrated double-pipe condensing solvent recovery system of the utility model.

[0029] Wherein: 1 is the shell; 2 is the cooling water upper header; 3 is the inner tube; 4 is the outer tube; 5 is the first cavity; 6 is the second cavity; 7 is the third cavity; 8 is the first outer tube plate; 9 is the second outer tube plate; 10 is the first inner tube plate; 11 is the second inner tube plate; 12 is the first water guide pipe; 13 is the secondary steam inlet pipe; 14 is the first condensate outlet pipe; 15 is the heater; 16 is the first gas-liquid separator; 17 is the second water guide pipe; 18 is the second gas-liquid separator; 19 is the double-pipe condenser; 20 is the cooler; 21 is the recovery tank, and 22 is the outlet pipe. DETAILED DESCRIPTION

[0030] The exemplary embodiments will be described in detail herein below, and the embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples of devices consistent with some aspects of the present application as detailed in the appended claims.

[0031] Embodiment 1

[0032] As shown in Figure 1 , Figure 2 , a double-pipe condenser includes a shell 1, the shell 1 is provided with a cooling water upper header 2 at the top thereof, a secondary steam inlet pipe 13 is provided on the outer wall of the shell 1 at the upper portion thereof, and a first condensate outlet pipe 14 is provided on the outer wall of the shell 1 at the lower portion thereof.

[0033] A plurality of inner tubes 3 and outer tubes 4 are arranged in the shell 1 in the vertical direction, the outer tubes 4 are sleeved outside the inner tubes 3, the inner tubes 3 form first cooling water passages, and the cavities formed between the outer tubes 4 and the inner tubes 3 are used for containing solvent vapor, a plurality of tube plates are arranged in the shell 1 in the horizontal direction along the vertical direction, and a second cooling water passage is arranged between two adjacent tube plates.

[0034] One end of each of the first cooling water passages and the second cooling water passages is communicated with the cooling water upper header 2, and the other end of each of the first cooling water passages and the second cooling water passages is communicated with cooling water.

[0035] The solvent vapor entering the secondary steam inlet pipe 13 is condensed by the cooling water in the first cooling water passages and the second cooling water passages to form solvent condensate, which is discharged through the first condensate outlet pipe 14.

[0036] Further, the tube plates include a first outer tube plate 8 and a second outer tube plate 9, the second outer tube plate 9 is arranged at the connection between the cooling water upper header 2 and the shell 1, the first outer tube plate 8 is arranged at the bottom of the shell 1, a plurality of the inner tubes 3 are arranged vertically between the first outer tube plate 8 and the second outer tube plate 9, the upper end of the inner tube 3 is communicated with the cooling water upper header 2, and the lower end of the inner tube 3 is communicated with cooling water.

[0037] Further, the tube plate further comprises a first inner tube plate 10 and a second inner tube plate 11, which are fixedly arranged in the interior of the shell 1 in the vertical direction, and a plurality of the outer tubes 4 are vertically arranged between the first inner tube plate 10 and the second inner tube plate 11.

[0038] The upper part of the outer tube 4 communicates with a first cavity 5 composed of the second outer tube plate 9, the second inner tube plate 11 and the inner wall of the shell 1, and the lower part of the outer tube 4 communicates with a second cavity 6 composed of the first outer tube plate 8, the first inner tube plate 10 and the inner wall of the shell 1.

[0039] Further, a first water guide pipe 12 is arranged between the first outer tube plate 8 and the first inner tube plate 10, and a second water guide pipe 17 is arranged between the second outer tube plate 9 and the second inner tube plate 11, the first water guide pipe 12 communicates with the cooling water upper pipe box 2, and the second water guide pipe 17 is connected with the cooling water.

[0040] The outer wall of the outer tube 4, the first inner tube plate 10, the second inner tube plate 11 and the inner wall of the shell 1 form a third cavity 7, and the first water guide pipe 12, the third cavity 7 and the second water guide pipe 17 form a second cooling water channel.

[0041] Further, a secondary steam inlet pipe 13 is arranged between the second outer tube plate 9 and the second inner tube plate 11, and a first condensed liquid outlet pipe 14 is arranged between the first outer tube plate 8 and the first inner tube plate 10, and the first condensed liquid outlet pipe 14 communicates with a first condensed liquid inlet pipe in the cooler 20.

[0042] Further, the first outer tube plate 8, the second outer tube plate 9, the first inner tube plate 10 and the second inner tube plate 11 are arranged in parallel with each other.

[0043] Further, the lower part of the shell 1 is connected with the upper part of the cooler 20 through a flange, so as to ensure that the double-pipe condenser 19 and the cooler 20 are an integral whole.

[0044] Further, the top of the cooling water upper pipe box 2 is provided with a water outlet pipe 22.

[0045] In the above embodiment 1, the cooling water is divided into two paths to enter the jacketed condenser, specifically: (1) the cooling water enters the inner tube 3 and flows into the cooling water upper tube box 2 through the inner tube 3; (2) the cooling water enters the third cavity 7 through the first water guide pipe 12 between the first outer tube plate 8 and the first inner tube plate 10, and flows into the cooling water upper tube box 2 through the second water guide pipe 17 between the second outer tube plate 9 and the second inner tube plate 11. The two paths of cooling water form double-sided cooling, the solvent vapor enters the first cavity 5 through the secondary vapor inlet pipe 13, and then enters the interlayer formed by the inner tube 3 and the outer tube 4 from the first cavity 5, so that the solvent vapor interlayer has cooling water on both sides for heat exchange and cooling, the double-sided heat exchange efficiency is much higher than that of single-sided heat exchange, the heat exchange efficiency is high, the condensation speed is fast, and the condensation effect is good. The solvent vapor is rapidly condensed to form solvent condensate which falls into the second cavity 6, and finally flows into the cooler 20 through the first condensate outlet pipe 14 and the first condensate inlet pipe in the cooler 20 for recycling. At the same time, the two paths of cooling water finally flow into the cooling water upper tube box 2, realizing the recycling of the cooling water and having high energy-saving effect.

[0046] In the above embodiment 1, the cooling water is divided into two paths to enter the jacketed condenser, specifically: (1) the cooling water enters the inner tube 3 and flows into the cooling water upper tube box 2 through the inner tube 3; (2) the cooling water enters the third cavity 7 through the first water guide pipe 12 between the first outer tube plate 8 and the first inner tube plate 10, and flows into the cooling water upper tube box 2 through the second water guide pipe 17 between the second outer tube plate 9 and the second inner tube plate 11. The two paths of cooling water form double-sided cooling, the solvent vapor enters the first cavity 5 through the secondary vapor inlet pipe 13, and then enters the interlayer formed by the inner tube 3 and the outer tube 4 from the first cavity 5, so that the solvent vapor interlayer has cooling water on both sides for heat exchange and cooling, the double-sided heat exchange efficiency is much higher than that of single-sided heat exchange, the heat exchange efficiency is high, the condensation speed is fast, and the condensation effect is good. The solvent vapor is rapidly condensed to form solvent condensate which falls into the second cavity 6, and finally flows into the cooler 20 through the first condensate outlet pipe 14 and the first condensate inlet pipe in the cooler 20 for recycling. At the same time, the two paths of cooling water finally flow into the cooling water upper tube box 2, realizing the recycling of the cooling water and having high energy-saving effect.

[0047] Embodiment 2

[0048] As shown in Figure 3 The utility model discloses a concentrated jacketed condensation solvent recovery system, including heater 15, first gas-liquid separator 16, jacketed condenser 19, cooler 20 and recovery tank 21, the top of heater 15 is communicated with the middle part of first gas-liquid separator 16, the bottom of heater 15 is communicated with the bottom of first gas-liquid separator 16, the top of first gas-liquid separator 16 is communicated with secondary vapor inlet pipe 13 in jacketed condenser 19, and the second condensate outlet pipe in cooler 20 is communicated with recovery tank 21.

[0049] Further, the second gas-liquid separator 18 is further provided between the first gas-liquid separator 16 and the jacketed condenser 19, the middle part of the second gas-liquid separator 18 is communicated with the top of the first gas-liquid separator 16, the bottom of the second gas-liquid separator 18 is communicated with the middle part of the first gas-liquid separator 16, and the top of the second gas-liquid separator 18 is communicated with the secondary vapor inlet pipe 13. Specifically, the second gas-liquid separator 18 can adopt a baffle separator for re-separating the secondary vapor entering through the first gas-liquid separator 16.

[0050] The working process of the concentration double pipe condenser solvent recovery system provided by the second embodiment is as follows: when the system works, the liquid enters the heater 15 from the bottom of the heater 15, and under the action of the heater 15, the liquid is boiled and vaporized, and the concentrated liquid and solvent vapor enter the first gas-liquid separator 16 at a faster speed. Under the action of the first gas-liquid separator 16, the concentrated liquid flows out from the bottom of the first gas-liquid separator 16 and then enters the bottom of the heater 15, mixes with the newly added liquid, and then enters the heater 15 for concentration. When the liquid is concentrated to the required concentration degree, after sampling and determining that it is qualified, the concentrated material is discharged from the heater 15, and the solvent vapor is introduced into the double pipe condenser 19 for condensation. The condensed solvent liquid from the double pipe condenser 19 is discharged from the first condensed liquid outlet pipe 14, enters the cooler 20 for further cooling, and finally flows out of the cooler 20 and enters the recovery tank 21.

[0051] The above only describes the specific embodiments of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application.

[0052] It should be understood that the present application is not limited to the above described and that various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A double pipe condenser characterized by, The shell (1) is provided with a cooling water upper header (2) at the top, a secondary steam inlet pipe (13) at the upper part of the outer wall of the shell (1), and a first condensed liquid outlet pipe (14) at the lower part of the outer wall of the shell (1), A plurality of inner tubes (3) and outer tubes (4) are arranged in the shell (1) in the vertical direction, the outer tube (4) is sleeved outside the inner tube (3), the inner tube (3) forms a first cooling water channel, and the cavity formed between the outer tube (4) and the inner tube (3) is used for containing solvent vapor, a plurality of tube plates are arranged in the shell (1) in the horizontal direction in the vertical direction, and a second cooling water channel is arranged between two adjacent tube plates, One end of the first cooling water channel and the second cooling water channel is communicated with the cooling water upper header (2), and the other end is communicated with the cooling water. The solvent vapor entering the secondary steam inlet pipe (13) is condensed by the cooling water in the first cooling water channel and the second cooling water channel, and forms solvent condensed liquid, which is discharged through the first condensed liquid outlet pipe (14).

2. A double pipe condenser according to claim 1, characterized in that The tube plate includes a first outer tube plate (8) and a second outer tube plate (9), the second outer tube plate (9) is arranged at the connection between the cooling water upper header (2) and the shell (1), the first outer tube plate (8) is arranged at the bottom of the shell (1), a plurality of inner tubes (3) are arranged vertically between the first outer tube plate (8) and the second outer tube plate (9), the upper end of the inner tube (3) is communicated with the cooling water upper header (2), and the lower end of the inner tube (3) is communicated with the cooling water.

3. A double pipe condenser according to claim 2, characterized in that The tube plate further includes a first inner tube plate (10) and a second inner tube plate (11), the first inner tube plate (10) and the second inner tube plate (11) are fixedly arranged in the shell (1) in the vertical direction, and a plurality of outer tubes (4) are arranged vertically between the first inner tube plate (10) and the second inner tube plate (11); The upper part of the outer tube (4) is communicated with the first cavity (5) composed of the second outer tube plate (9), the second inner tube plate (11) and the inner wall of the shell (1), and the lower part of the outer tube (4) is communicated with the second cavity (6) composed of the first outer tube plate (8), the first inner tube plate (10) and the inner wall of the shell (1).

4. A double pipe condenser according to claim 3, characterized in that The first water guide pipe (12) is communicated with the cooling water upper header (2), and the second water guide pipe (17) is communicated with the cooling water; The outer wall of the outer tube (4), the first inner tube plate (10), the second inner tube plate (11) and the inner wall of the shell (1) form a third cavity (7), and the first water guide pipe (12), the third cavity (7) and the second water guide pipe (17) form a second cooling water channel.

5. A double pipe condenser according to claim 3, wherein The secondary steam inlet pipe (13) is located between the second outer tube plate (9) and the second inner tube plate (11), and the first condensed liquid outlet pipe (14) is located between the first outer tube plate (8) and the first inner tube plate (10), and the first condensed liquid outlet pipe (14) is communicated with the first condensed liquid inlet pipe in the cooler (20).

6. A double pipe condenser according to claim 1, wherein The lower part of the shell (1) is connected with the upper part of the cooler (20) through a flange.

7. A double pipe condenser as claimed in claim 1, wherein, The top of the cooling water upper pipe box (2) is provided with a water outlet pipe (22).

8. A double pipe condenser according to claim 3, wherein The first outer tube plate (8), the second outer tube plate (9), the first inner tube plate (10) and the second inner tube plate (11) are arranged in parallel with each other.

9. A concentration bootstrapped condenser solvent recovery system employing the bootstrapped condenser of any one of claims 1-8, wherein, The heater (15), the first gas-liquid separator (16), the double-pipe condenser (19), the cooler (20) and the recovery tank (21) are included, the top of the heater (15) is communicated with the middle part of the first gas-liquid separator (16), the bottom of the heater (15) is communicated with the bottom of the first gas-liquid separator (16); the top of the first gas-liquid separator (16) is communicated with the secondary steam inlet pipe (13) in the double-pipe condenser (19), and the second condensed liquid outlet pipe in the cooler (20) is communicated with the recovery tank (21).

10. The concentrated-sleeve condensing solvent recovery system of claim 9, wherein, The first gas-liquid separator (16) and the double-pipe condenser (19) are further provided with a second gas-liquid separator (18), the middle part of the second gas-liquid separator (18) is communicated with the top of the first gas-liquid separator (16), the bottom of the second gas-liquid separator (18) is communicated with the middle part of the first gas-liquid separator (16), and the top of the second gas-liquid separator (18) is communicated with the secondary steam inlet pipe (13). The first gas-liquid separator (16) and the double-pipe condenser (19) are further provided with a second gas-liquid separator (18), the middle part of the second gas-liquid separator (18) is communicated with the top of the first gas-liquid separator (16), the bottom of the second gas-liquid separator (18) is communicated with the middle part of the first gas-liquid separator (16), and the top of the second gas-liquid separator (18) is communicated with the secondary steam inlet pipe (13).

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