Waste heat utilization device for inositol production

Abstract

The utility model belongs to the technical field of inositol production, and discloses an inositol production waste heat utilization device which comprises a lithium bromide unit, and the lithium bromide unit comprises a regenerator, a condenser, an evaporator and an absorber which are sequentially communicated through a water vapor conveying pipeline. A hydrolysis steam inlet pipe of the regenerator is communicated to a hydrolysis tank through a gas-liquid separator, a hydrolysis condensate water outlet pipe of the regenerator is communicated with a cooling water tower, and the cooling water tower is respectively communicated to an absorber and a condenser through a cooling water circulating pump and a circulating pipeline; the regenerator is also communicated with the absorber through a solution circulating pipe and a solution pump; and the evaporator is also communicated with a heat exchange device of the crystallizing tank through an ice water circulating pipe and an ice water circulating pump. According to the utility model, waste heat generated in inositol production can be fully recycled, so that the effects of energy conservation and efficiency improvement are achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of inositol production, and specifically relates to a device for utilizing waste heat from inositol production. Background Art

[0002] A large amount of waste heat is generated during the production process of inositol, especially in the inositol hydrolysis process. Because the hydrolysis process requires high temperature and high pressure, the temperature is generally higher than 180°C and the pressure reaches 0.8MPa, so water vapor with very high heat will be generated in the hydrolysis tank. This water vapor is equivalent to the production capacity of a steam boiler. When the hydrolysis tank is discharged, a large amount of secondary steam will be generated. If it is directly discharged into the air or sewage, it will cause extreme waste of energy. Therefore, in order to give full play to the value of these energies, we must find a way to reuse these waste heat. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a waste heat utilization device for inositol production, which can fully recycle the waste heat generated in the inositol production to achieve the effect of energy saving and efficiency improvement.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] An inositol production waste heat utilization device comprises a lithium bromide unit, wherein the lithium bromide unit comprises a regenerator, a condenser, an evaporator and an absorber which are sequentially connected through a water vapor transmission pipeline; a hydrolysis steam inlet pipe of the regenerator is connected to a hydrolysis tank through a gas-liquid separator, a hydrolysis condensate outlet pipe of the regenerator is connected to a cooling water tower, and the cooling water tower is respectively connected to an absorber and a condenser through a cooling water circulation pump and a circulation pipeline; the regenerator is also connected to the absorber through a solution circulation pipe and a solution pump; and the evaporator is also connected to a heat exchange device of a crystallization tank through an ice water circulation pipe and an ice water circulation pump.

[0006] Preferably, a vacuum pump is provided on the water vapor delivery pipeline between the regenerator and the condenser. The model of the vacuum pump is GLOWZ-70 and the manufacturer is Beijing Zhaoyue Dongfang Technology Co., Ltd.

[0007] Preferably, the evaporator is provided with a material circulation system, and the material circulation system comprises a circulation pump and a circulation pipeline.

[0008] Preferably, the model of the lithium bromide unit is a 500*3 steam-type lithium bromide refrigeration unit, and the manufacturer is Jiangyin Guote HVAC Equipment Co., Ltd.

[0009] Preferably, the gas-liquid separator has a diameter of 800 mm and is manufactured by Changzhou Xinma Drying Equipment Co., Ltd.

[0010] Preferably, the cooling water circulation pump, solution pump and ice water circulation pump are all of model CHM10-2, and the manufacturer is Southern Pump Industry Co., Ltd.

[0011] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0012] The utility model utilizes the combination of cooling water tower and lithium bromide unit to convert the heat of secondary steam generated when the hydrolysis tank is discharged into ice water and re-apply it to the cooling process of the crystallization tank, so that the waste heat generated in the production of inositol can be fully recycled and utilized, achieving the effect of energy saving and efficiency improvement. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] In the figure, 1. lithium bromide unit; 2. regenerator; 3. condenser; 4. evaporator; 5. absorber; 6. gas-liquid separator; 7. hydrolysis tank; 8. cooling water tower; 9. cooling water circulation pump; 10. solution pump; 11. ice water circulation pump; 12. crystallization tank. DETAILED DESCRIPTION

[0015] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Embodiment 1:

[0017] like Figure 1 As shown, an inositol production waste heat utilization device includes a lithium bromide unit 1, which includes a regenerator 2, a condenser 3, an evaporator 4 and an absorber 5 connected in sequence through a water vapor transmission pipeline (not marked); the hydrolysis steam inlet pipe (not marked) of the regenerator 2 is connected to the hydrolysis tank 7 through a gas-liquid separator 6, and the hydrolysis condensate outlet pipe (not marked) of the regenerator 2 is connected to a cooling water tower 8, and the cooling water tower 8 is connected to the absorber 5 and the condenser 3 respectively through a cooling water circulation pump 9 and a circulation pipeline (not marked); the regenerator 2 is also connected to the absorber 5 through a solution circulation pipe (not marked) and a solution pump 10; the evaporator 4 is also connected to the heat exchange device (not marked) of the crystallization tank 12 through an ice water circulation pipe (not marked) and an ice water circulation pump 11.

[0018] In actual use, a large amount of secondary steam is generated when the hydrolysis tank 7 is discharged. After being separated by the gas-liquid separator 6, the clean secondary steam is sent to the regenerator 2 in the lithium bromide unit 1 to heat the lithium bromide solution in the regenerator 2. The secondary steam condensate generated after heat exchange is discharged into the cooling tower 8 to replenish the cooling tower 8. The cooling water in the cooling tower 8 is used to cool the feed liquid in the condenser 3 and the absorber 5 in the lithium bromide unit 1.

[0019] The water vapor evaporated from the regenerator 2 in the lithium bromide unit 1 is pumped into the condenser 3 by a vacuum pump (not shown), the water vapor is cooled into liquid water, and then enters the evaporator 4. The water in the evaporator 4 is circulated by a circulating pump (not shown), and the water evaporates into water vapor and is transported to the absorber 5, and is absorbed by the concentrated lithium bromide solution in the absorber 5. Due to the evaporation of water molecules in the evaporator 4, heat is absorbed, and the heat of the water in the heat exchanger (not shown) in the evaporator 4 is absorbed, and the water at room temperature is turned into ice water at 7°C, which is supplied to the material to be cooled in the crystallizer 12 for cooling;

[0020] Because the lithium bromide solution in the absorber 5 absorbs the water vapor evaporated from the evaporator 4, the solution concentration becomes thinner and the ability of the solution to absorb water decreases. In order to increase the concentration of the lithium bromide solution, the lithium bromide solution is pumped into the regenerator 2 under the action of the solution pump 10. Under the action of the steam transported from the hydrolysis tank 7, part of the water in the lithium bromide solution is evaporated, and the high-concentration lithium bromide solution returns to the absorber 5 to absorb the water vapor from the evaporator 4.

[0021] After such treatment, the heat generated when the hydrolysis tank 7 is discharged is converted into ice water and reapplied to the heat exchange device of the crystallization tank to cool the material.

[0022] It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.

Claims

1. An inositol production waste heat utilization device, characterized in that: It comprises a lithium bromide unit, which comprises a regenerator, a condenser, an evaporator and an absorber which are connected in sequence through a water vapor conveying pipeline; the hydrolysis steam inlet pipe of the regenerator is connected to the hydrolysis tank through a gas-liquid separator, the hydrolysis condensate outlet pipe of the regenerator is connected to a cooling water tower, and the cooling water tower is respectively connected to the absorber and the condenser through a cooling water circulation pump and a circulation pipeline; the regenerator is also connected to the absorber through a solution circulation pipe and a solution pump; the evaporator is also connected to the heat exchange device of the crystallization tank through an ice water circulation pipe and an ice water circulation pump.

2. The inositol production waste heat utilization device as claimed in claim 1, characterized in that: A vacuum pump is provided on the water vapor conveying pipeline between the regenerator and the condenser.

3. The inositol production waste heat utilization device as claimed in claim 1, characterized in that: The evaporator is provided with a material circulation system, and the material circulation system comprises a circulation pump and a circulation pipeline.

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