Click for new scientific resources and news about Corona[COVID-19]

Paper Information

Journal:   MODARES MECHANICAL ENGINEERING   JANUARY 2017 , Volume 16 , Number 10 ; Page(s) 103 To 114.
 
Paper: 

EFFECT OF FEED CONDITIONS ON THE PERFORMANCE OF DOUBLE STAGE MIXED REFRIGERANT LNG SYSTEM

 
 
Author(s):  KARAMLOO BEHNAM, KHANAKI MANSOUR, MAFI MOSTAFA, SADATSAKKAK SEYEDABBAS*
 
* DEPARTMENT OF MECHANICAL ENGINEERING, IMAM KHOMEINI INTERNATIONAL UNIVERSITY, QAZVIN, IRAN
 
Abstract: 

In this study, the double stage mixed refrigerant LNG system is investigated, which is known for having the highest efficiency among the liquefaction cycles. The main purpose is to evaluate the performance of double stage mixed refrigerant LNG system due to variations on the environmental and operating conditions of feed. Temperature, pressure and feed gas compositions are considered as variable environmental conditions during liquefaction processes. A basic system has been chosed to view the response of the DMR liquefaction system to these changes. Results show that with decreasing temperature and increasing pressure of feed natural gas, specific shaft work decreases. Moreover, since in this case, minimum approach temperature in heat exchangers are reduced only slightly from allowed value (3oC). Therefore this adventage can be used with accepting a slightly lower safety factor than the optimal case. Increasing temperature and decreasing pressure of feed natural gas cause increasing the specific shaft work as well as temperature cross occurance in heat exchangers and therefore these areas should be prevented using control strategies. Also, any changes in mole fraction of natural gas components make temperature cross in heat exchangers. Finally, due to the change of the natural gas components mole percentage, during the life of the well, the refrigerant composition in the cycle should be optimized regarding the new conditions.

 
Keyword(s): NATURAL GAS LIQUEFACTION, DUAL MIXED REFRIGERANT PROCESS, ENVIRONMENTAL CONDITIONS, COMPOSITE CURVE
 
References: 
  • ندارد
 
  Persian Abstract Yearly Visit 52
 
Latest on Blog
Enter SID Blog