Parametric study on the effect of acetic acid congener, pressure cycles and superheater temperature on 3A molecular sieve dusting during ethanol dehydration

Date

6-2016

Degree

Bachelor of Science in Chemical Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Rex B. Demafelis

Restrictions

Restricted: Not available to the general public. Access is available only after consultation with author/thesis adviser and only to those bound by the confidentiality agreement.

Abstract

Ethanol dehydration by adsorption on type 3A zeolite molecular sieves is an energy efficient industrial process for producing fuel ethanol. A parametric study was conducted using a laboratory-scale ethanol dehydration by pressure swing adsorption (PSA). The study investigated the effects of different levels of acetic acid congener concentration, number of pressure cycles and superheater temperature on the degree of molecular sieve dusting measured by the percentage decrease in single bead crush strength and bulk mass of molecular sieves. The statistical analysis yielded acetic acid concentration, superheater temperature, acetic acid concentration-superheater temperature interaction and number of pressure cycles-superheater temperature interaction as significant factors that affected the percentage decrease in single bead crush strength. The conditions which significantly reduced the crush strength of molecular sieve beads were 240 mg/L, 180 °C, 240 mg/L-180 °C, and 10 pressure cycles-180 °C. On the other hand, acetic acid congener concentration, number of pressure cycles and superheater temperature have no significant effects on the percentage decrease in bulk mass. By trend analysis. bulk mass was reduced more under 10 pressure cycles compared to 5 pressure cycles.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2016 E62 H47

Document Type

Thesis

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