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- Title
Recovery of vinyl chloride from by‐streams of polyvinyl chloride production by TPSA in a multitubular adsorber.
- Authors
Carmo, Paulo; Ribeiro, Ana M.; Rodrigues, Alírio E.; Ferreira, Alexandre
- Abstract
This work aims at developing an efficient and feasible adsorption‐based separation process for the separation of vinyl chloride and nitrogen, on activated carbon, by employing a multitubular packed bed geometry, with adsorbent material inside the tubes. Using this geometry, a 2‐dimensional mathematical model of a temperature pressure swing adsorption process was used to developed a 6‐step three multitubular adsorbers system capable of separating and purifying an industrial scale gas stream of a 40:60% (v/v) vinyl chloride/nitrogen mixture into a 95% (v/v) vinyl chloride stream and a nitrogen stream with a vinyl chloride limit concentration of 8 ppm (w/w). The process reported energy consumption of 4.88 × 106 J/kgVCM and recovery capacity of 24.35 kgVCM/(m3unit h). The multitubular geometry enabled the use of lower adsorbent loads, shorter cycle times, and lower regeneration temperatures. An equivalent 1‐dimensional model has also shown to satisfactorily estimate the performance of the current equipment.
- Subjects
VINYL chloride; PRESSURE swing adsorption process; POLYVINYL chloride; ACTIVATED carbon
- Publication
AIChE Journal, 2020, Vol 66, Issue 5, p1
- ISSN
0001-1541
- Publication type
Article
- DOI
10.1002/aic.16899