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Plate-fin heat exchanger

Plate-fin heat exchanger
Plate-fin heat exchangers, usually composed of baffles, fins, seals, and guide fins.Place fins, guide fins and seals between adjacent two baffles to form a sandwich, called passage. The sandwich is superimposed in different ways according to the fluid, and brazed as a whole to form a plate bundle, which is the core of plate-fin heat exchanger.Plate-fin heat exchangers have been widely used in petroleum, chemical and natural gas processing industries.
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Apr 18, 2013
The obvious symbol of freezing of the small air separation Tower heat exchanger is that the temperature difference at the Heat end increases, the pres
Apr 10, 2013
The purification process of the molecular sieve is that before the compressed air enters into the cold box, it should first go through the molecular s
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The most likely leakage of switching heat exchanger is the welding line, especially the joint of the head and the pipeline. Most of the causes of leakage are the quality problems of manufacture and installation, which are also related to maintenance. The working condition of switching heat exchanger is poor. It is not only impacted by alternating airflow, but also changes greatly in airflow temperature. In long-term operation, the weak parts are easy to leak. Therefore, the welding quality should be strictly guaranteed during manufacture and installation. After installation, strict leak detection and pressure test must be carried out before driving, and problems should be dealt with timely to avoid passivity after driving. There are three methods to check whether the switching heat exchanger leaks in operation: 1) flow method. When a large amount of leakage occurs between the channel of product oxygen or product nitrogen and air channel, the output of oxygen or nitrogen increases ob...
Mar 29, 2024
On the one hand, the expansion heat exchanger is to reduce the temperature of the air after expansion by utilizing the cooling amount of the sewage nitrogen returned from the upper tower, so as to reduce the superheat of the air after expansion into the upper tower; on the other hand, it plays a role in distributing the cooling capacity of the upper and lower towers. Through it, the cooling amount of dirty nitrogen from the outlet supercooler to the switch-type heat exchanger (or the cooler) is partly returned to the upper tower, which improves the rectification of the upper tower. The location of the expansion heat exchanger can be placed in front of or behind the expansion machine, which is determined by the process design. The large air separation equipment in our country is often set in front of the machine, using part of the dirt nitrogen from the supercooler to cool the air in front of the expansion machine, so that the temperature behind the expansion machine is not too high,...
Feb 29, 2024
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