Energy saving opportunities in integrated NGL/LNG schemes exploiting: Thermal-coupling common-utilities and process knowledge

Title
Energy saving opportunities in integrated NGL/LNG schemes exploiting: Thermal-coupling common-utilities and process knowledge
Author(s)
이문용칸모드샤리크차니아고유스메스핀게투[메스핀게투]
Keywords
NATURAL-GAS LIQUEFACTION; NGL RECOVERY PROCESSES; LNG; OPTIMIZATION; DESIGN; SYSTEMS
Issue Date
201408
Publisher
ELSEVIER SCIENCE SA
Citation
CHEMICAL ENGINEERING AND PROCESSING, v.82, pp.54 - 64
Abstract
Novel integrated and optimization schemes for natural gas (NC) liquid recovery and liquefaction step are presented. The liquefaction of NC was carried out using the newly developed KSMR liquefaction cycle while the separation of NC liquids was performed using energy efficient thermally coupled distillation schemes. The main highlight of integration are, (i) feed splitting to provide reboiler duty in the methane scrubber, (ii) common refrigeration utilities required all over the plant; and (iii) flexibility of integrated plant for easy transition between ethane recovery or ethane rejection. These integration steps minimize the overall plant-specific power requirements and the duplication of processing equipment. After successful integration, the MR cycle was optimized for the compression energy requirement by varying the refrigerant composition and operating pressure levels with the aid of an in-house established knowledge-based optimization (KBO) methodology. The KBO approach is robust in application and gives consistent results. Compared to the base case, 9% improvement in plant compression energy requirement was obtained. (C) 2014 Elsevier B.V. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/31353http://dx.doi.org/10.1016/j.cep.2014.06.001
ISSN
0255-2701
Appears in Collections:
공과대학 > 화학공학부 > Articles
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