Refrigerating system for preparing low-temperature water by using low-pressure steam and method

Abstract

The invention discloses a refrigerating system for preparing low-temperature water by using low-pressure steam. The refrigerating system comprises an evaporator, a main cooler, a chilled water pump, a main ejector, a chilled water pool and a circulating water cooling system, the evaporator and the main cooler are located above the chilled water pool, a chilled water outlet in the bottom of the evaporator is connected with the chilled water pool, an inlet pipeline of the chilled water pump is connected with the chilled water pool, an outlet pipeline provides low-temperature water for a user, an outlet pipeline of the user is connected with a chilled water inlet in the top of the evaporator, the main cooler is connected with the circulating water cooling system through a cooling water inlet in the top and a cooling water outlet in the bottom, a steam inlet of the main ejector is connected with a low-pressure air source, a steam outlet is connected with a steam inlet in the side face of the main cooler, and an air suction opening of the main ejector is connected with an air extraction opening in the side face of the evaporator. According to the refrigerating system, the low-pressure steam is used as a power source, and water is used as a refrigerant and a secondary refrigerant to prepare low-temperature water, so that the preparation cost of the low-temperature water is reduced, no chemical agent is used, and the cooling water quality can be prevented from deteriorating.

Description

technical field [0001] The invention relates to a refrigeration system and method for producing low-temperature water by using low-pressure steam, which can reduce the production cost of low-temperature water and ensure the water quality of cooling water for coking production, and belongs to the technical field of refrigeration. Background technique [0002] Coking enterprises have very strict requirements on process temperature control during the production process, and whether the process temperature reaches the standard is directly related to the safety and stability of the production order. At present, coking enterprises generally use independently set refrigeration mechanisms to obtain low-temperature water to provide cooling water for heat exchange and cooling of heat medium in the production process, so as to ensure that the production process medium meets the requirements of production technology control indicators. Most of the existing refrigerators are lithium brom...

AI Technical Summary

Problems solved by technology

Most of the existing refrigerators are lithium bromide refrigerators or gas refrigerators. This kind of refrigeration system not only consumes a lot of energy, but also requires annual maintenance, regeneration and replacement of lithium bromide solution, which increases the production cost of low-temperature water. Series leakage of heat pipes will also cause lithium bromide solution to enter the circulating water system, deteriorating the cooling water quality

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