Multiloop control of a pilot-scale membrane system for gas separations

Journal Article · Mon Aug 01 00:00:00 EDT 1994 · Industrial and Engineering Chemistry Research; (United States)

DOI:https://doi.org/10.1021/ie00032a004· OSTI ID:6936792

Henson, M A; Koros, W J ^[1]

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1. Univ. of Texas, Austin, TX (United States). Dept. of Chemical Engineering

Membrane systems are preferred for many separations due to their low energy consumption, reduced environmental impact, cost effectiveness at low gas volumes, low maintenance costs, space and weight efficiency, and ease of operation. A multiloop control system for a pilot-scale membrane separation process is designed and evaluated. The process employs hollow fiber membrane modules and is representative of air separation systems in industry. The decentralized control system originally consists of five PID controllers which regulate feed flow rate and pressure, permeate pressure, suction pressure, and module temperature. This configuration yields poor performance as a result of interactions between the feed flow rate and feed pressure controllers. By disabling the flow rate controller and proper tuning of the remaining control loops, satisfactory control is achieved during 4 days of continuous operation.

• OSTI ID: 6936792
• Journal Information: Industrial and Engineering Chemistry Research; (United States), Vol. 33:8; ISSN 0888-5885
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CONTROL SYSTEMS
DESIGN
PERFORMANCE TESTING
GASES
MEMBRANE TRANSPORT
SEPARATION EQUIPMENT
EXPERIMENTAL DATA
FLOW REGULATORS
MEMBRANES
PRESSURE CONTROL
CONTROL
CONTROL EQUIPMENT
DATA
EQUIPMENT
FLUIDS
INFORMATION
NUMERICAL DATA
TESTING
320303* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Equipment & Processes