当前位置: Home / Faq / Large air separation FAQ /

Throttle expansion versus isentropic expansion of large air separation unit

Throttle expansion versus isentropic expansion of large air separation unit
Mar 10, 2022
Author: DEAR AST

Isentropic expansion is more effective than throttle expansion in terms of temperature effect and cooling capacity. Moreover, the expander can also recover part of the expansion work, which can improve the economy of refrigeration. However, the throttling valve is simple in structure, easy to adjust and can work in the gas-liquid two-phase zone. Especially when the initial temperature is low, the cooling capacity of throttling is enhanced, isentropic expansion is weakened and the gap between the two this cooling capacity is reduced, throttling in large air separation unit is more favourable.

Dear Air Separation has advanced system control technology, including DCS instrumentation control system and its configuration, PLC instrumentation control system, conventional instrumentation control system, conventional electrical control system, DCS instrumentation control system, microcomputer integrated protection control system, etc. Dear Air Separation develops innovative process technology to extend the product life cycle.

秦皇岛安丰钢铁有限公司KDON(Ar)-1600020000-500型空分设备

DEAR Air Separation Solve YourThrottle expansion versus isentropic expansion of large air separation unitYou can also learn about otherLarge air separation FAQ about DEAR Air Separation, and solve the problem for you.
Didn’t find the problem encountered?
Please contact live chat or email for quick help.
Related FAQ
More Related FAQ
In the air separation unit, low-temperature liquid is transported by centrifugal cryogenic pump. In order to ensure the reliable operation of the equipment, two sets of low-temperature pumps are generally equipped, one for use and one for standby. During normal operation, the main pump runs at full load, and the standby pump is in standby state under low load operation. Since the working medium temperature of cryogenic liquid pump is about -180°C, the working pressure is very high, and the pump body is installed in the cold box. When the pump fails, it is extremely difficult to maintain. Therefore, how to maintain the stable and reliable operation of cryogenic liquid pump is of great significance.
2025.09.03
The brief introduction of the air filter and air compressor in this process is the same as that of the chilled nitrogen production process. 1. Cold dryer: it is an air separation equipment used to reduce the temperature of compressed air before entering the air drying purifier to extract oil and water. It usually adopts post cooler with the structure of column pipe type, casing type, cooling sheet type and so on. 2. Oil-water separator: its function is to separate the oil and moisture contained in the compressed air and make the compressed air get Primary purification. 3. Air drying purifier: Compressed air still contains certain moisture after passing through the post cooler, and its content depends on the temperature of the air. The drying process of compressed air generally adopts molecular sieve absorption method and freeze drying method. 4. Pressure conversion absorption nitrogen generation device: the adsorbents used are usually 5A Molecular sieve or carbon molecular sieve, an...
2025.09.02
Need more information?
Contact us for more details about our air separation equipment, solutions and services.
Products
  • Large air separation
  • Small air separation
  • High purity nitrogen air separation
  • Liquefaction air separation
  • Complete air separation
  • Biogas purification
  • Air separation parts
Need more information?
Tel:+86-19837850537
© Kaifeng DEAR Air Separation Industry Co., Ltd.. All rights reserved.
Online
Inquiry
Email
Top