Low-pressure steam recovery
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Dear sea friends: Hello everyone! I have low-pressure steam generated by heat of reaction at a rate of about 4 t/h and at a temperature of around 110°C, which needs to be recovered (the steam cannot be vented; otherwise it will affect the pressure in the steam drum). Now, recovery is done using an air cooler, with the cooling water temperature controlled at around 80°C. Due to the extremely low temperatures in Xinjiang during winter, it is easy to experience improper control when the system adjusts its load levels, which can lead to the freezing and cracking of the heat exchange tubes. Additionally, recently many of these heat exchange tubes have developed sand holes that cause leakage (corrosion and material defects are suspected as the causes). Now, it is necessary to design a plan that is highly feasible and easy to implement; I would appreciate your advice. (The approach of directly cooling steam with circulating water is too inefficient; a better solution is needed.) Welcome all marine enthusiasts to offer your guidance!
It can be used for pressure increase, such as by steam compressors (centrifugal, screw type).
You can search on forums and databases for ammonia absorption refrigeration or lithium bromide refrigeration. You can refer to the diagram below for the general principle
The answer to this question is actually very simple: a regular condenser is sufficient. When designing, it is necessary to take into account the temperature characteristics of the Xinjiang region and pay attention to thermal expansion and contraction.
Based on the Xinjiang region, if it is pure steam, it is still recommended to use water for recovery; recovery using air coolers cannot avoid freezing and blockages in winter. Absorption type can also be considered.
Pressure matchers or steam ejectors can also be used to combine waste steam with high-pressure steam in order to create low-pressure steam suitable for industrial use; however, it is generally recommended to use cold water to generate hot water instead
It can also be used for waste heat power generation, as well as for absorption refrigeration. Compound evaporation cooling could also be considered for cooling
This type of heat should be considered for use in a heat exchanger before being cooled by air! If direct water recovery is the goal, air coolers may be the least costly option, but they are difficult to design, subject to significant thermal shocks, and suffer from severe thermal stress corrosion of the heat exchange tubes. Located in a cold climate with large variations in heat load, air coolers using hot air circulation can be employed.
Consider whether it is possible to heat the deionized water