Title: From the methanol to olefins: an operational assessment

Authors: Aaqil Ali; Vinita Manna; Kainean Lalchan; Carmen Riverol

Addresses: Chemical Engineering Department, University of the West Indies, St. Augustine Campus, Trinidad, Republic of Trinidad and Tobago ' Chemical Engineering Department, University of the West Indies, St. Augustine Campus, Trinidad, Republic of Trinidad and Tobago ' Chemical Engineering Department, University of the West Indies, St. Augustine Campus, Trinidad, Republic of Trinidad and Tobago ' Chemical Engineering Department, University of the West Indies, St. Augustine Campus, Trinidad, Republic of Trinidad and Tobago

Abstract: The plant-wide process is viewed as a set of such sub-systems where a combination of several control arrangements is evaluated. In this work, the design and control of an MTO described by a rigorous dynamic model using HYSYS is assessed using different well established control combination approaches. In the first, the steady state process design and the control system are setting-up using sequential single loops. It is shown that operability is a strong function of the process design and potential operability bottlenecks are identified. In the second approach, the process design and the control system are setup using cascade and split control arrangements simultaneously leading to a better controlled system than that obtained using the sequential approach.

Keywords: process control; process design; methanol to olefins; MTO control; MTO design; cascade control; split control; safety.

DOI: 10.1504/IJESMS.2016.075528

International Journal of Engineering Systems Modelling and Simulation, 2016 Vol.8 No.2, pp.149 - 156

Received: 27 Aug 2014
Accepted: 25 Nov 2014

Published online: 28 Mar 2016 *

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