Tomato juice evaporation concentration system

Abstract

The utility model discloses a tomato juice evaporation concentration system, the outlet of tomato juice raw solution pipe is connected with the top feed inlet of primary falling film evaporator through feed pump, the cold side of condensate water preheater, and the bottom outlet of primary falling film evaporator and its separator is connected with the top feed inlet of primary falling film evaporator through primary falling film circulating pump, the inlet of primary falling film circulating pump still links through primary falling film discharge pump, TVR circulating pump, the pipe of secondary forced evaporator with the lateral wall inlet of secondary forced separator, and the bottom outlet of secondary forced separator is circulated through TVR circulating pump, still links through secondary discharge pump and tomato juice concentrated liquid discharge pipe, and the secondary steam export of primary falling film separator is connected with the shell course inlet of primary falling film evaporator through steam compressor, and the secondary steam export of secondary forced separator is connected with the shell course inlet of secondary forced evaporator through steam jet pump. The system has high heat utilization rate, and the capacity is big, reduces the density fluctuation of discharge while reducing energy consumption.

Description

Technical Field

[0001] This utility model relates to an evaporation and concentration system, and more particularly to a tomato juice evaporation and concentration system, belonging to the field of biochemical equipment technology. Background Technology

[0002] The industrial production and sale of tomato juice began in the early 20th century and continues to this day. In recent years, as consumers have placed greater emphasis on green and healthy beverages, and given tomato juice's advantages such as improving appetite, aiding digestion, and providing antioxidants, it has become increasingly popular and its market share has been steadily increasing.

[0003] Concentration has always been an essential step in tomato juice production. Currently, most tomato juice concentrate production in my country uses vacuum direct concentration and multi-effect evaporation. However, vacuum concentration has low efficiency and cannot guarantee the preservation of the flavor of the material. Multi-effect evaporation consumes a large amount of steam and carries the risk of damaging lycopene and other components. Furthermore, the concentration of the concentrated tomato juice solution obtained using either of these evaporation methods is difficult to control precisely and fluctuates significantly.

[0004] Chinese utility model patent CN209251639U discloses a concentration device for tomato juice processing. Its inlet is located above a preheating cylinder, which is connected to an evaporator via a connecting pipe. The evaporator includes a distribution box, distribution pipes, and a manifold pipe. The three distribution pipes are evenly and fixedly connected to the right side of the distribution box, and the manifold pipe is fixedly connected to the other end of the three distribution pipes. One end of a cooling pipe is fixedly connected to the right side of the manifold pipe, and the other end of the cooling pipe passes through a cooling cylinder and extends to the outside of the cooling cylinder. The liquid outlet is located at the other end of the cooling pipe. An outer cover is placed directly above the evaporator, and a controller is located on the left side of the outer cover. The drawbacks of this technical solution are: low evaporation efficiency, long material residence time, and difficulty in large-scale continuous production; the secondary steam generated by the system cannot be utilized, resulting in significant energy waste; and the concentration range of the concentrated tomato juice is difficult to control, making it difficult to meet the standards for customized concentrated tomato juice under existing production models, thus limiting the company's production. Utility Model Content

[0005] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, and such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0006] In view of the problems existing in the above and / or prior art, this utility model is proposed.

[0007] The purpose of this invention is to overcome the problems existing in the prior art and provide a tomato juice evaporation and concentration system that can effectively evaporate and concentrate tomato juice, improve the system's heat utilization rate, increase the overall system throughput, reduce the difficulty of operation and maintenance, and reduce the fluctuation of output density while reducing operating energy consumption.

[0008] To solve the above technical problems, this utility model provides a tomato juice evaporation and concentration system, including a tomato juice raw material pipe G1. The outlet of the tomato juice raw material pipe G1 is connected to the cold side inlet of a condensate preheater 5 through a feed pump P1. The cold side outlet of the condensate preheater 5 is connected to the top inlet of a first-stage falling film evaporator 1. A first-stage falling film separator 2 is connected to the lower part of the first-stage falling film evaporator 1. The bottom outlets of the first-stage falling film evaporator 1 and the first-stage falling film separator 2 are connected to the top inlet of the first-stage falling film evaporator 1 through a first-stage falling film circulation pump P3. The inlet pipe of the primary falling film circulating pump P3 is also connected to the inlet of the TVR circulating pump P5 through the primary falling film discharge pump P4 and the primary transfer pipe G9. The outlet of the TVR circulating pump P5 is connected to the tube side inlet of the secondary forced evaporator 3. The tube side outlet of the secondary forced evaporator 3 is connected to the side wall inlet of the secondary forced separator 4. The bottom outlet of the secondary forced separator 4 is connected to the inlet of the TVR circulating pump P5. The inlet of TVR circulating pump P5 is also connected to the inlet of secondary discharge pump P7, and the outlet of secondary discharge pump P7 is connected to tomato juice concentrate discharge pipe G10. The top secondary steam outlet of the first-stage falling film separator 2 is connected to the inlet of the steam compressor H1, and the outlet of the steam compressor H1 is connected to the shell-side inlet of the first-stage falling film evaporator 1. The top secondary steam outlet of the secondary forced separator 4 is connected to the middle suction port of the steam jet pump H2, the main power port of the steam jet pump H2 is connected to the live steam pipe G4, and the outlet of the steam jet pump H2 is connected to the shell-side steam inlet of the secondary forced evaporator 3.

[0009] Furthermore, the shell-side condensate outlet of the first-stage falling film evaporator 1 is connected to the first-stage condensate tank 6, the outlet of the first-stage condensate tank 6 is connected to the hot-side inlet of the condensate preheater 5 through the first-stage condensate pump P2, and the hot-side outlet of the condensate preheater 5 is connected to the condensate recycling system through the condensate discharge pipe G2.

[0010] Furthermore, the volute drain outlet of the steam compressor H1 is connected to the inlet of the liquid collection tank 10, and the bottom outlet of the liquid collection tank 10 is connected to the primary condensate tank 6 via the liquid collection pump P8.

[0011] Furthermore, the outlet of the primary condensate pump P2 is also connected to the spray water inlet of the steam compressor H1 outlet via a desuperheating water spray pipe G3.

[0012] Furthermore, the top secondary steam outlet of the secondary forced separator 4 is also connected to the shell-side inlet of the TVR condenser 8. The shell-side condensate outlets of the secondary forced evaporator 3 and the TVR condenser 8 are both connected to the secondary condensate tank 7. The outlet of the secondary condensate tank 7 is connected to the inlet of the TVR condensate pump P6. The outlet of the TVR condensate pump P6 is connected to the outlet pipe of the primary condensate pump P2.

[0013] Furthermore, the shell-side vacuum port of the first-stage falling film evaporator 1 is connected to the non-condensable steam main pipe G8 through the first-stage evaporation vacuum regulating valve V1, and the shell-side vacuum port of the second-stage forced evaporator 3 is also connected to the shell-side inlet of the TVR condenser 8. The shell-side vacuum port of the TVR condenser 8 is connected to the non-condensable steam main pipe G8 through the second-stage evaporation vacuum regulating valve V2. The outlet of the non-condensable steam main pipe G8 is connected to the hot-side inlet of the surface condenser 9, and the hot-side outlet of the surface condenser 9 is connected to the middle inlet of the gas-liquid separator. The top outlet of the gas-liquid separator is vented to the atmosphere through the vacuum pump P9.

[0014] Compared to the prior art, the advantages or beneficial effects of the embodiments of this application include at least the following: 1. The evaporation and concentration process that combines falling film evaporation and forced circulation evaporation can solve the problems of damage to tomato components, high steam consumption, and large circulating water consumption in traditional multi-effect tomato juice evaporation and concentration, thus ensuring the subsequent production benefits for customers.

[0015] 2. The tomato juice solution is first preheated by condensate to raise the feed temperature, so that the feed temperature is basically equal to the system evaporation temperature. This reduces the heat load required for the material to enter the system for evaporation and concentration. The condensate generated by the system heats the material and can also recover the heat of the condensate, while also preheating the feed.

[0016] 3. The MVR system uses a falling film evaporator. Compared with the steam consumed by the traditional evaporation process to evaporate a ton of water, the MVR system consumes little steam except during startup and other special circumstances. The steam consumption is significantly reduced, thus significantly reducing production and operating costs.

[0017] 4. The TVR (Thermal Vapor Recompression) system employs a forced evaporator. After the tomato juice solution is concentrated by MVR falling film evaporation, its concentration and viscosity increase. To avoid reduced evaporation efficiency and material loss, the TVR system uses a forced evaporator. The concentrated liquid from the MVR evaporation unit enters the TVR evaporation system for further concentration. The further concentrated liquid is then pumped out of the system via a secondary discharge pump. The use of a forced evaporator in TVR evaporation reduces the risk of scaling during the evaporation process due to the high viscosity of the material.

[0018] 5. The MVR+TVR evaporation process is adopted. After the material is concentrated by MVR falling film evaporation, it enters the TVR secondary forced evaporator via a primary falling film discharge pump. To utilize the secondary steam generated by evaporation and to precisely adjust the system's evaporation rate according to the existing concentration, a steam jet pump is used to provide a heat source for the TVR system. The MVR evaporation system ensures basic steam recycling and energy-saving effects, while the TVR system uses high-pressure, high-temperature steam as the driving force to draw in some low-temperature secondary steam to form a medium-pressure, medium-temperature mixed steam, providing an additional heat source for the evaporator. This combination can further recover and utilize more secondary steam energy, resulting in higher energy efficiency, lower operating costs, and better energy-saving effects compared to a standalone MVR system.

[0019] 6. The evaporation and concentration of tomato juice solution allows for continuous feeding and discharging. When the material concentration and viscosity are low, falling film evaporation and concentration are used, resulting in high heat transfer efficiency and short material residence time. When the material concentration and viscosity increase, forced circulation evaporation is employed, which meets the system's evaporation requirements while reducing the risk of scaling and extending the system's continuous operation time. Furthermore, the combination of these two evaporation methods has minimal impact on the composition of the tomato juice solution, significantly improving its evaporation efficiency.

[0020] 7. The system vacuum is adjusted by interlocking the opening of the non-condensable steam pneumatic valve. Through stable, precise and effective control logic, the overall system vacuum stability is achieved. On the one hand, automated control can make the system adjustment more precise, and on the other hand, it reduces the possibility of manual intervention errors or inaccurate manual adjustments by personnel on site.

[0021] 8. While improving evaporation efficiency, reducing system live steam consumption, and minimizing the damage to tomato juice solution components, the system also achieves precise control of the system's output density. By interlocking the steam jet pump pressure control valve with the output concentration, the output concentration is automatically adjusted. Simultaneously, adjusting the system's output concentration allows for regulation of the pressure control valve, meeting customers' needs for different output concentrations and improving the overall system's production efficiency. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings are provided for reference and illustration only and are not intended to limit this utility model. Wherein: Figure 1 This is a flowchart of the tomato juice evaporation and concentration system of this utility model; In the diagram: 1. First-stage falling film evaporator; 2. First-stage falling film separator; 3. Second-stage forced evaporator; 4. Second-stage forced separator; 5. Condensate preheater; 6. First-stage condensate tank; 7. Second-stage condensate tank; 8. TVR condenser; 9. Surface condenser; 10. Liquid collection tank; P1. Feed pump; P2. Primary condensate pump; P3. Primary falling film circulation pump; P4. Primary falling film discharge pump; P5. TVR circulation pump; P6. TVR condensate pump; P7. Secondary discharge pump; P8. Liquid collection pump; P9. Vacuum pump; H1. Steam compressor; H2. Steam jet pump G1. Tomato juice concentrate pipe; G2. Condensate drain pipe; G3. Desuperheating water spray pipe; G4. Live steam pipe; G5. Primary and secondary steam pipes; G6. Compressed steam pipe; G7. Circulating cooling water pipe; G8. Non-condensable steam main pipe; G9. Primary transfer pipe; G10. Tomato juice concentrate discharge pipe; V1. Primary evaporation vacuum regulating valve; V2. Secondary evaporation vacuum regulating valve; CT1. Online concentration detector. Detailed Implementation

[0023] In the following description of this utility model, the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not mean that the device must have a specific orientation.

[0024] To make the technical means, creative features, achieved objectives and effects of this utility model easier to understand, the present utility model will be further described below with reference to specific illustrations. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0026] like Figure 1As shown, the tomato juice evaporation and concentration system of this utility model includes a primary falling film evaporator 1, a primary falling film separator 2, a secondary forced evaporator 3, and a secondary forced separator 4. The outlet of the tomato juice raw liquid pipe G1 is connected to the inlet of the feed pump P1. The outlet of the feed pump P1 is connected to the cold side inlet of the condensate preheater 5. The cold side outlet of the condensate preheater 5 is connected to the top feed inlet of the primary falling film evaporator 1. The lower part of the primary falling film evaporator 1 is connected to the primary falling film separator 2. The bottom outlets of the primary falling film evaporator 1 and the primary falling film separator 2 are connected to the inlet of the primary falling film circulation pump P3. The outlet of the primary falling film circulation pump P3 is connected to the top feed inlet of the primary falling film evaporator 1 through a primary circulation pipe.

[0027] The inlet pipe of the primary falling film circulating pump P3 is also connected to the inlet of the primary falling film discharge pump P4. The outlet of the primary falling film discharge pump P4 is connected to the inlet of the TVR circulating pump P5 through the primary transfer pipe G9. The outlet of the TVR circulating pump P5 is connected to the lower inlet of the tube side of the secondary forced evaporator 3. The upper outlet of the tube side of the secondary forced evaporator 3 is connected to the side wall inlet of the secondary forced separator 4. The bottom outlet of the secondary forced separator 4 is connected to the inlet of the TVR circulating pump P5.

[0028] The inlet of TVR circulating pump P5 is also connected to the inlet of secondary discharge pump P7, and the outlet of secondary discharge pump P7 is connected to tomato juice concentrate discharge pipe G10 through online concentration detector CT1.

[0029] The top secondary steam outlet of the first-stage falling film separator 2 is connected to the inlet of the steam compressor H1 via the first-stage secondary steam pipe G5. The outlet of the steam compressor H1 is connected to the shell-side inlet of the first-stage falling film evaporator 1 via the compressed steam pipe G6. The compressed steam pipe G6 is also connected to the live steam pipe G4 to facilitate the supply of steam during system startup. The shell-side condensate outlet of the first-stage falling film evaporator 1 is connected to the first-stage condensate tank 6 via a water trap. The volute drain outlet of the steam compressor H1 is connected to the inlet of the liquid accumulator 10. The bottom outlet of the liquid accumulator 10 is connected to the inlet of the liquid accumulator pump P8. The outlet of the liquid accumulator pump P8 is connected to the first-stage condensate tank 6. The outlet of the first-stage condensate tank 6 is connected to the inlet of the first-stage condensate pump P2. The outlet of the first-stage condensate pump P2 is connected to the hot-side inlet of the condensate preheater 5. The hot-side outlet of the condensate preheater 5 is connected to the condensate recycling system via the condensate discharge pipe G2. The outlet of the primary condensate pump P2 is also connected to the spray water inlet of the steam compressor H1 outlet via the desuperheating water spray pipe G3.

[0030] The shell-side vacuum port of the first-stage falling film evaporator 1 is connected to the non-condensable steam main pipe G8 through the first-stage evaporation vacuum regulating valve V1. The outlet of the non-condensable steam main pipe G8 is connected to the hot-side inlet of the surface condenser 9. The hot-side outlet of the surface condenser 9 is connected to the middle inlet of the gas-liquid separator. The top outlet of the gas-liquid separator is vented to the atmosphere through the vacuum pump P9. The cold side of the surface condenser 9 is connected to the circulating cooling water pipe G7.

[0031] The top secondary steam outlet of the secondary forced separator 4 is connected to the middle suction port of the steam jet pump H2. The main power port of the steam jet pump H2 is connected to the live steam pipe G4. The outlet of the steam jet pump H2 is connected to the shell-side steam inlet of the secondary forced evaporator 3. The shell-side condensate outlet of the secondary forced evaporator 3 is connected to the secondary condensate tank 7 through a water trap. The outlet of the secondary condensate tank 7 is connected to the inlet of the TVR condensate pump P6. The outlet of the TVR condensate pump P6 is connected to the outlet pipe of the primary condensate pump P2.

[0032] The top secondary steam outlet of the secondary forced separator 4 is also connected to the shell-side inlet of the TVR condenser 8. The shell-side vacuum port of the secondary forced evaporator 3 is also connected to the shell-side inlet of the TVR condenser 8. The shell-side vacuum port of the TVR condenser 8 is connected to the non-condensable steam main pipe G8 through the secondary evaporation vacuum regulating valve V2. The shell-side condensate outlet of the TVR condenser 8 is connected to the secondary condensate tank 7 through a water trap. The tube side of the TVR condenser 8 is connected to the circulating cooling water pipe G7.

[0033] The tomato juice concentrate from the tomato juice concentrate pipe G1 is at 68°C. It is fed into the tube side of the condensate preheater 5 by the feed pump P1 and preheated to about 71.8°C. The heat source medium for the shell side of the condensate preheater 5 is the condensate pumped by the first-stage condensate pump P2. After exchanging heat with the tomato juice concentrate, the condensate is discharged into the condensate recovery system through the condensate discharge pipe G2.

[0034] After being preheated by the condensate, the tomato juice solution at approximately 71.8°C enters the first-stage falling film evaporator 1 for evaporation. The shell-side heat source medium of the first-stage falling film evaporator 1 is the secondary steam compressed by the steam compressor H1. After heat exchange, the condensate in the shell side of the first-stage falling film evaporator 1 flows by gravity into the first-stage condensate tank 6 and is then pumped out by the first-stage condensate pump P2.

[0035] After evaporation, the discharge temperature of the first-stage falling film evaporator 1 is about 72°C. The material is then pumped back into the first-stage falling film evaporator 1 through the first-stage falling film circulation pump P3 and the falling film circulation pipeline for material circulation and evaporation. After the material reaches the first-stage discharge concentration, the first-stage falling film discharge pump P4 pumps the material into the TVR evaporation system through the first-stage transfer pipe G9 for back-end evaporation.

[0036] TVR circulating pump P5 feeds the primary concentrate into the tube side of the secondary forced evaporator 3 for heating, then into the secondary forced separator 4 for separation. The secondary concentrate is discharged from the bottom of the secondary forced separator 4 and circulated by TVR circulating pump P5. After the material reaches the secondary discharge concentration, it is discharged by secondary discharge pump P7 through tomato juice concentrate discharge pipe G10.

[0037] The secondary steam generated after the tomato juice solution is evaporated in the first-stage falling film evaporator 1 has a temperature of approximately 70°C. It first passes through the first-stage falling film separator 2 for vapor-liquid separation, and the separated liquid is discharged from the bottom of the first-stage falling film separator 2. The secondary steam from the first-stage evaporation enters the compressor H1 through the first-stage secondary steam pipe G5 for compression, enthalpy increase, and temperature increase to 78.5°C. After enthalpy and temperature increase, the compressed steam enters the shell-side heat source inlet of the first-stage falling film evaporator 1 through the compressed steam pipe G6 as a heating medium.

[0038] To regulate the temperature of the compressed steam, the condensate pump P2 delivers condensate through the desuperheating water spray pipe G3 and sprays it into the outlet of the compressor H1.

[0039] The secondary steam generated by the secondary forced evaporator 3 has a temperature of approximately 67°C. It first undergoes gas-liquid separation in the secondary forced separator 4. A portion of the separated secondary steam enters the steam jet pump H2 and mixes with live steam to form mixed secondary steam, which then re-enters the secondary forced evaporator 3 as a heating source. After heat exchange with the tube-side material, the mixed secondary steam condenses into water, which is discharged from the shell-side condensate outlet of the secondary forced evaporator 3 and flows by gravity into the secondary condensate tank 7. The remaining secondary steam enters the shell side of the TVR condenser 8 and condenses with the circulating water in the tube side to form condensate, which flows by gravity from the condensate outlet of the TVR condenser 8 into the secondary condensate tank 7. The condensate in the secondary condensate tank 7 is then pumped by the TVR condensate pump P6 to the hot side of the condensate preheater 5.

[0040] The condensate produced by the steam compressor H1 flows by gravity into the liquid collection tank 10, and is then pumped into the primary condensate tank 6 by the liquid collection pump P8.

[0041] The secondary steam generated by the primary falling film evaporator 1 carries a certain amount of non-condensable gas, which enters the surface condenser 9 for condensation through the primary evaporation vacuum regulating valve V1 and the non-condensable steam main pipe G8. The vacuum port of the TVR condenser 8 is connected to the surface condenser 9 for condensation through the secondary evaporation vacuum regulating valve V2 and the non-condensable steam main pipe G8. Most of the condensation is water, and the remaining small portion is non-condensable gas, which is extracted and discharged by the vacuum pump P9. The vacuum pump P9 can maintain the negative pressure in the system and ensure stable and continuous low-temperature evaporation of the system.

[0042] The above description is merely a preferred embodiment of the present utility model, showing and describing the basic principles, main features, and advantages of the present utility model. It is not intended to limit the scope of patent protection of the present utility model. Those skilled in the art should understand that the present utility model is not limited to the above embodiments. In addition to the above embodiments, the present utility model may have other implementations without departing from the spirit and scope of the present utility model. Various changes and improvements to the present utility model are also possible. All technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of protection claimed by the present utility model. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents. Technical features not described in the present utility model can be implemented by or using existing technology, and will not be elaborated here.

Claims

1. A tomato juice evaporation and concentration system, comprising a tomato juice concentrate tube (G1), characterized in that: The outlet of the tomato juice stock pipe (G1) is connected to the cold side inlet of the condensate preheater (5) via the feed pump (P1). The cold side outlet of the condensate preheater (5) is connected to the top inlet of the first-stage falling film evaporator (1). The lower part of the first-stage falling film evaporator (1) is connected to the first-stage falling film separator (2). The bottom outlets of the first-stage falling film evaporator (1) and the first-stage falling film separator (2) are connected to the top inlet of the first-stage falling film evaporator (1) via the first-stage falling film circulation pump (P3). The inlet pipe of the first-stage falling film circulating pump (P3) is also connected to the inlet of the TVR circulating pump (P5) through the first-stage falling film discharge pump (P4) and the first-stage transfer pipe (G9). The outlet of the TVR circulating pump (P5) is connected to the tube-side inlet of the second-stage forced evaporator (3). The tube-side outlet of the second-stage forced evaporator (3) is connected to the side wall inlet of the second-stage forced separator (4). The bottom outlet of the second-stage forced separator (4) is connected to the inlet of the TVR circulating pump (P5). The inlet of the TVR circulating pump (P5) is also connected to the inlet of the secondary discharge pump (P7), and the outlet of the secondary discharge pump (P7) is connected to the tomato juice concentrate discharge pipe (G10). The top secondary steam outlet of the first-stage falling film separator (2) is connected to the inlet of the steam compressor (H1), and the outlet of the steam compressor (H1) is connected to the shell-side inlet of the first-stage falling film evaporator (1). The top secondary steam outlet of the secondary forced separator (4) is connected to the middle suction port of the steam jet pump (H2), the main power port of the steam jet pump (H2) is connected to the live steam pipe (G4), and the outlet of the steam jet pump (H2) is connected to the shell-side steam inlet of the secondary forced evaporator (3).

2. The tomato juice evaporation and concentration system according to claim 1, characterized in that: The shell-side condensate outlet of the first-stage falling film evaporator (1) is connected to the first-stage condensate tank (6). The outlet of the first-stage condensate tank (6) is connected to the hot-side inlet of the condensate preheater (5) through the first-stage condensate pump (P2). The hot-side outlet of the condensate preheater (5) is connected to the condensate recycling system through the condensate discharge pipe (G2).

3. The tomato juice evaporation and concentration system according to claim 2, characterized in that: The volute drain of the steam compressor (H1) is connected to the inlet of the liquid collection tank (10), and the bottom outlet of the liquid collection tank (10) is connected to the primary condensate tank (6) via the liquid collection pump (P8).

4. The tomato juice evaporation and concentration system according to claim 2, characterized in that: The outlet of the primary condensate pump (P2) is also connected to the spray water inlet of the steam compressor (H1) outlet via a desuperheating water spray pipe (G3).

5. The tomato juice evaporation and concentration system according to claim 2, characterized in that: The top secondary steam outlet of the secondary forced separator (4) is also connected to the shell-side inlet of the TVR condenser (8). The shell-side condensate outlets of the secondary forced evaporator (3) and the TVR condenser (8) are both connected to the secondary condensate tank (7). The outlet of the secondary condensate tank (7) is connected to the inlet of the TVR condensate pump (P6). The outlet of the TVR condensate pump (P6) is connected to the outlet pipe of the primary condensate pump (P2).

6. The tomato juice evaporation and concentration system according to claim 5, characterized in that: The shell-side vacuum port of the first-stage falling film evaporator (1) is connected to the non-condensable steam main (G8) through the first-stage evaporation vacuum regulating valve (V1). The shell-side vacuum port of the second-stage forced evaporator (3) is also connected to the shell-side inlet of the TVR condenser (8). The shell-side vacuum port of the TVR condenser (8) is connected to the non-condensable steam main (G8) through the second-stage evaporation vacuum regulating valve (V2). The outlet of the non-condensable steam main (G8) is connected to the hot-side inlet of the surface condenser (9). The hot-side outlet of the surface condenser (9) is connected to the middle inlet of the gas-liquid separator. The top outlet of the gas-liquid separator is vented to the atmosphere through the vacuum pump (P9).

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