eprintid: 13406
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/34/06
datestamp: 2023-11-10 03:27:58
lastmod: 2023-11-10 03:27:58
status_changed: 2023-11-10 01:51:05
type: article
metadata_visibility: show
creators_name: Shafiq, U.
creators_name: Shariff, A.M.
creators_name: Babar, M.
creators_name: Azeem, B.
creators_name: Ali, A.
creators_name: Bustam, A.
title: Study of dry ice formation during blowdown of CO�-CH� from cryogenic distillation column
ispublished: pub
keywords: Air purification; Binary mixtures; Carbon dioxide; Cryogenics; Hazards; Ice; Orifices; Refrigerants; Thermoelectricity, Blow down; Computational investigation; Cryogenic distillation columns; Dry ice; Empirical correlations; Experimental validations; High pressure; High-pressure condition, Distillation columns
note: cited By 7
abstract: Cryogenic distillation columns are generally subjected to high-pressure loadings during the natural gas purification process. The high-pressure conditions inside the column cause safety risk e.g. rupture. When an emergency arises, blowdown is a typical way of minimizing the failure hazard. However, blowdown at the cryogenic conditions involves dry ice formation due to the rapid decrease in temperature driven by the Joule-Thomson effect. The dry ice formation intensifies the failure hazard due to the orifice blockage. Therefore, optimization of blowdown parameters is necessary to avoid the dry ice formation. So far, very limited studies are available in the literature for the blowdown of CO�-CH� mixture, especially at the cryogenic conditions. In this study, a computational investigation followed by the experimental validation is accomplished to analyze the dry ice formation during blowdown of CO�-CH� binary mixture from the cryogenic distillation column. The composition of mixture, orifice size, and initial conditions inside vessel have a high impact on blowdown path. A 3.00 mm orifice is the most suitable size for the blowdown at cryogenic conditions as it doesn't promote solidification and discharges the inventory quickly. Based on the experimental observation, an empirical correlation is also developed to instantly find out the optimum blowdown parameters. © 2020 Elsevier Ltd
date: 2020
publisher: Elsevier Ltd
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85080061588&doi=10.1016%2fj.jlp.2020.104073&partnerID=40&md5=acc8ebc2411d9e997af31951e591099d
id_number: 10.1016/j.jlp.2020.104073
full_text_status: none
publication: Journal of Loss Prevention in the Process Industries
volume: 64
refereed: TRUE
issn: 09504230
citation:   Shafiq, U. and Shariff, A.M. and Babar, M. and Azeem, B. and Ali, A. and Bustam, A.  (2020) Study of dry ice formation during blowdown of CO�-CH� from cryogenic distillation column.  Journal of Loss Prevention in the Process Industries, 64.   ISSN 09504230