Energy-saving application equipment for compression evaporation in high fructose evaporation

Abstract

The utility model provides energy-saving application equipment for compression evaporation in high fructose evaporation, and relates to the technical field of sugar liquid evaporation. Comprising a steam compressor, an evaporator, a cyclone separator, a heat exchanger, a preheater, a feeding pipe, a feeding conveying pipe I, a feeding conveying pipe II, a feeding conveying pipe III, a condensate water pipeline I, a condensate water pipeline II, a secondary steam outlet pipe, a saturated steam inlet pipe, a secondary steam inlet pipe and a discharging pipe, according to the design, a material evaporation mode is changed into compression evaporation with high heat exchange efficiency from a traditional plate type evaporator with low heat exchange efficiency, and a waste heat recovery system is arranged, so that the material evaporation efficiency is higher, the energy consumption is lower, the production efficiency is further improved, and the product cost is reduced; and the steam compressor is used for compressing and pressurizing secondary steam to serve as a heat source of the evaporator, so that the heat exchange efficiency is improved, and the stock solution can be preheated to achieve the energy-saving purpose.

Description

Technical Field

[0001] The utility model relates to the field of sugar solution evaporation, in particular to energy-saving application equipment of compression evaporation in high fructose evaporation. Background Art

[0002] As we all know, fructose is made by deep processing of high fructose, and high fructose is made by separating fructose-glucose solution. The low-concentration high fructose after separation needs to be evaporated to remove part of the water to obtain high-concentration high fructose, and then deeply processed to obtain high-purity fructose.

[0003] The traditional sugar industry uses plate evaporators to evaporate sugar liquid. Although this equipment is easy to operate, it has high energy consumption requirements, especially the use of steam. Therefore, the cost of high fructose directly affects the cost of fructose.

[0004] Compression evaporation is a new type of sugar liquid evaporation equipment. The secondary steam is compressed and the heat exchange efficiency is effectively improved. This equipment has a waste heat recovery system, which plays a positive role in energy saving and consumption reduction of sugar liquid. Under the condition of ensuring the original quality remains unchanged, the energy consumption of evaporating one ton of water can be saved by 50-60% compared with the plate evaporator. Therefore, the utility model provides an energy-saving application equipment for compression evaporation in high fructose evaporation. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides an energy-saving application device for compression evaporation in high fructose evaporation, which solves the problems raised by the above-mentioned background technology.

[0006] To achieve the above purpose, the utility model is implemented through the following technical solutions: an energy-saving application device for compression evaporation in high fructose evaporation, including a steam compressor, an evaporator, a cyclone separator, a heat exchanger, and a preheater. The heat exchanger and the preheater are both provided with two medium channels, one of the medium channels on the heat exchanger is respectively connected to a feed pipe and a feed delivery pipe 1 at both ends, the other medium channel on the heat exchanger is connected to a condensed water pipeline 2, and the heat exchanger is connected to the condensed water outlet of the evaporator through the condensed water pipeline 2, and the condensed water inlet of the evaporator is connected to the steam compressor through a secondary steam outlet pipe;

[0007] Two ends of one of the medium channels on the preheater are respectively connected to a condensed water pipeline 1 and a saturated steam inlet pipe, and two ends of another medium channel on the preheater are respectively connected to a feed delivery pipe 1 and a feed delivery pipe 2;

[0008] The other end of the feed delivery pipe 2 is connected to the material inlet of the evaporator, the material outlet of the evaporator is connected to the feed delivery pipe 3, and the other end of the feed delivery pipe 3 is connected to the feed end of the cyclone separator;

[0009] The top air outlet of the cyclone separator is connected to a secondary steam inlet pipe, and the discharge end of the cyclone separator is connected to a discharge pipe.

[0010] As a further technical solution of the utility model, a steam trap is installed on the condensate pipe one, a saturated steam regulating valve is installed on the saturated steam inlet pipe, and the condensate pipe one is connected to the saturated steam inlet pipe.

[0011] As a further technical solution of the utility model, a feed regulating valve is installed on the feed pipe, and the feed pipe, feed conveying pipe one, feed conveying pipe two and feed conveying pipe three are interconnected.

[0012] As a further technical solution of the utility model, the other end of the secondary steam inlet pipe is connected to the input end of the steam compressor, and the output end of the steam compressor is connected to the secondary steam outlet pipe.

[0013] As a further technical solution of the utility model, a concentration meter is installed on the discharge pipe, and the other end of the discharge pipe is connected to the raw material return pipe and the finished product discharge pipe. The raw material return pipe and the finished product discharge pipe are respectively installed with a return valve and a discharge valve, and the other end of the raw material return pipe is connected to the raw material tank.

[0014] The utility model provides an energy-saving application device for compression evaporation in high fructose evaporation, which has the following beneficial effects compared with the prior art:

[0015] This design is an energy-saving application equipment for compression evaporation in high fructose evaporation. The material evaporation method is changed from the traditional plate evaporator with low heat exchange efficiency to compression evaporation with high heat exchange efficiency, and is accompanied by a waste heat recovery system, so that the material evaporation efficiency is higher and the energy consumption is lower, thereby improving production efficiency and reducing product costs. In addition, the steam compressor is used to compress and pressurize the secondary steam as the heat source of the evaporator, which not only improves the heat exchange efficiency, but also can preheat the raw liquid to achieve the purpose of energy saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The schematic diagram of the structure of an energy-saving application equipment of compression evaporation in high fructose evaporation.

[0017] In the figure: 1. steam compressor; 2. evaporator; 3. cyclone separator; 4. heat exchanger; 5. preheater; 6. feed pipe; 61. feed conveying pipe 1; 62. feed conveying pipe 2; 63. feed conveying pipe 3; 64. discharge pipe; 7. secondary steam inlet pipe; 8. secondary steam outlet pipe; 9. condensate pipeline 1; 91. condensate pipeline 2; 10. steam trap; 11. concentration meter; 12. return valve; 13. discharge valve; 14. saturated steam regulating valve; 15. saturated steam inlet pipe; 16. feed regulating valve; 17. raw material return pipe; 18. finished product discharge pipe. DETAILED DESCRIPTION

[0018] The technical solutions 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 only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 The utility model provides a technical solution for energy-saving application of compression evaporation in high fructose evaporation: an energy-saving application of compression evaporation in high fructose evaporation, comprising a steam compressor 1, an evaporator 2, a cyclone separator 3, a heat exchanger 4, and a preheater 5. The heat exchanger 4 and the preheater 5 are both provided with two medium channels, one of the medium channels on the heat exchanger 4 is respectively connected to a feed pipe 6 and a feed conveying pipe 61 at both ends, the other medium channel on the heat exchanger 4 is connected to a condensed water pipeline 91, and the heat exchanger 4 is connected to the condensed water outlet of the evaporator 2 through the condensed water pipeline 91, and the condensed water inlet of the evaporator 2 is connected to the condensed water outlet of the evaporator 2 through the secondary steam. The steam outlet pipe 8 is connected to the steam compressor 1, the output end of the steam compressor 1 is connected to the secondary steam outlet pipe 8, the top air outlet of the cyclone separator 3 is connected to the secondary steam inlet pipe 7, the other end of the secondary steam inlet pipe 7 is connected to the input end of the steam compressor 1. During the operation of the entire equipment, as the evaporation amount increases, when the secondary steam accumulation reaches the starting condition of the steam compressor 1, the secondary steam in the cyclone separator 3 will be transported to the steam compressor 1 through the secondary steam inlet pipe 7, and after being pressurized by the steam compressor 1, it will be transported to the evaporator 2 by the secondary steam outlet pipe 8 for use as a heat source, thereby realizing waste heat recovery and reuse;

[0020] The two ends of one of the medium channels on the preheater 5 are respectively connected to a condensate pipe 9 and a saturated steam inlet pipe 15, a steam trap 10 is installed on the condensate pipe 9, a saturated steam regulating valve 14 is installed on the saturated steam inlet pipe 15, and the condensate pipe 9 is connected to the saturated steam inlet pipe 15. It should be added that before the equipment is operated, a steam trap must be installed at the end of the saturated steam inlet pipe 15 to prevent steam loss, and the saturated steam inlet pipe 15 is used to transport steam to the preheater 5 to achieve preheating treatment of the feed liquid.

[0021] The two ends of another medium channel on the preheater 5 are respectively connected to the feed delivery pipe 1 61 and the feed delivery pipe 2 62, the other end of the feed delivery pipe 2 62 is connected to the material inlet of the evaporator 2, the material outlet of the evaporator 2 is connected to the feed delivery pipe 3 63, the other end of the feed delivery pipe 3 63 is connected to the feed end of the cyclone separator 3, the feed regulating valve 16 is installed on the feed pipe 6, the feed pipe 6, the feed delivery pipe 1 61, the feed delivery pipe 2 62 and the feed delivery pipe 3 63 are interconnected, the feed liquid is transported to the heat exchanger 4 for preheating through the feed pipe 6, and then transported to the preheater 5 through the feed delivery pipe 1 61 for secondary preheating, and then transported to the evaporator 2 for heating through the feed delivery pipe 2 62, and finally, transported to the cyclone separator 3 through the feed delivery pipe 3 63 for separation;

[0022] The discharge end of the cyclone separator 3 is connected to a discharge pipe 64, on which a concentration meter 11 is installed, and the other end of the discharge pipe 64 is connected to a raw material return pipe 17 and a finished product discharge pipe 18, on which a return valve 12 and a discharge valve 13 are installed, respectively, and the other end of the raw material return pipe 17 is connected to the raw material tank. It should be noted that in the early stage of equipment operation, due to the small amount of evaporation and unqualified liquid concentration, the material separated by the cyclone separator 3 will be discharged from the discharge pipe 64, and opened through the return valve 12, and returned to the raw material tank via the raw material return pipe 17. At this time, the discharge valve 13 on the finished product discharge pipe 18 is in a closed state.

[0023] The working principle of the utility model is as follows: before the equipment is put into operation, the steam compressor 1 is first debugged to ensure that the system operates normally, and then the feed regulating valve 16, the saturated steam regulating valve 14, and the return valve 12 are opened in sequence, so that the feed liquid is heated by the heat exchanger 4, the preheater 5 and the evaporator 2, and then transported to the cyclone separator 3 for processing. Since the evaporation amount is small in the early stage of the equipment operation and the feed liquid concentration is unqualified, the return valve 12 will be opened and the discharge valve 13 will be closed, and the separated raw materials will be returned to the raw material tank through the raw material return pipe 17.

[0024] As the evaporation amount increases, the secondary steam accumulates. When the starting condition of the steam compressor 1 is reached, the steam compressor 1 is started and the equipment is operated. At this time, the secondary steam in the cyclone separator 3 is transported to the steam compressor 1 through the secondary steam inlet pipe 7. After being pressurized by the steam compressor 1, it is transported to the evaporator 2 through the secondary steam outlet pipe 8 for use as a heat source.

[0025] At this time, the secondary steam forms high-temperature condensed water after heat exchange in the evaporator 2, and the condensed water is transported to the heat exchanger 4 through the condensed water pipeline 2 91, and the heat exchanger 4 is used to preheat the raw material liquid, thereby playing the role of waste heat recovery;

[0026] It should be noted that as the amount of secondary steam increases, the saturated steam regulating valve 14 is gradually adjusted down to achieve the purpose of energy saving.

[0027] In addition, as the system operation gradually stabilizes, the feed regulating valve 16 and the operating frequency of the steam compressor 1 are adjusted, and the concentration of the feed liquid gradually increases. When the concentration reaches the requirement, the return valve 12 is closed and the discharge valve 13 is opened to complete the operation.

[0028] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. An energy-saving application device for compression evaporation in high fructose evaporation, characterized in that: The invention comprises a steam compressor (1), an evaporator (2), a cyclone separator (3), a heat exchanger (4), and a preheater (5), wherein the heat exchanger (4) and the preheater (5) are both provided with two medium channels, wherein two ends of one of the medium channels on the heat exchanger (4) are respectively connected to a feed pipe (6) and a feed conveying pipe 1 (61), and another medium channel on the heat exchanger (4) is connected to a condensate pipe 2 (91), and the heat exchanger (4) is connected to a condensate outlet of the evaporator (2) via the condensate pipe 2 (91), and the condensate inlet of the evaporator (2) is connected to the steam compressor (1) via a secondary steam outlet pipe (8); Two ends of one of the medium channels on the preheater (5) are respectively connected to a condensate pipe (9) and a saturated steam inlet pipe (15), and two ends of another medium channel on the preheater (5) are respectively connected to a feed delivery pipe (61) and a feed delivery pipe (62); The other end of the feed conveying pipe 2 (62) is connected to the material inlet of the evaporator (2), the material outlet of the evaporator (2) is connected to the feed conveying pipe 3 (63), and the other end of the feed conveying pipe 3 (63) is connected to the feed end of the cyclone separator (3); The top air outlet of the cyclone separator (3) is connected to a secondary steam inlet pipe (7), and the discharge end of the cyclone separator (3) is connected to a discharge pipe (64).

2. The energy-saving application equipment of compression evaporation in high fructose evaporation according to claim 1 is characterized in that: A steam trap (10) is installed on the condensate pipe (9), a saturated steam regulating valve (14) is installed on the saturated steam inlet pipe (15), and the condensate pipe (9) is connected to the saturated steam inlet pipe (15).

3. The energy-saving application equipment of compression evaporation in high fructose evaporation according to claim 1 is characterized in that: The feed pipe (6) is provided with a feed regulating valve (16), and the feed pipe (6), the feed conveying pipe 1 (61), the feed conveying pipe 2 (62) and the feed conveying pipe 3 (63) are interconnected.

4. The energy-saving application equipment of compression evaporation in high fructose evaporation according to claim 1 is characterized in that: The other end of the secondary steam inlet pipe (7) is connected to the input end of the steam compressor (1), and the output end of the steam compressor (1) is connected to the secondary steam outlet pipe (8).

5. The energy-saving application equipment of compression evaporation in high fructose evaporation according to claim 1 is characterized in that: The discharge pipe (64) is provided with a concentration meter (11), and the other end of the discharge pipe (64) is connected to a raw material return pipe (17) and a finished product discharge pipe (18), and a return valve (12) and a discharge valve (13) are respectively provided on the raw material return pipe (17) and the finished product discharge pipe (18), and the other end of the raw material return pipe (17) is connected to a raw material tank.

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