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3. Low density polyethylene (LDPE) is produced in a long tubular reactor under harsh conditions (T = 200 °C and 1800 bar). Ethylene is pressurized, mixed with catalyst, and pumped into the reactor where (LDPE) is produced. The reactor itself is 0.5 m in diameter and 1800 m in length. Hint: the following equations may help you. m=vp and v=u-A Where in is the mass flow rate in kg/s, V is the volumetric flow rate in m³/s, p is the fluid density in kg/m³, u is the average fluid velocity in m/s, and A is the cross sectional area in m². a) What phase is the ethylene? How can you tell? b) If the flow rate of ethylene at the beginning of the reaction (i.e. when conversion is 0) in the reactor is 2.0 m/s, determine the mass flow rate in kg/s.

3. Low density polyethylene (LDPE) is produced in a long tubular reactor under harsh conditions (T = 200 °C and 1800 bar). Ethylene is pressurized, mixed with catalyst, and pumped into the reactor where (LDPE) is produced. The reactor itself is 0.5 m in diameter and 1800 m in length. Hint: the following equations may help you. m=vp and v=u-A Where in is the mass flow rate in kg/s, V is the volumetric flow rate in m³/s, p is the fluid density in kg/m³, u is the average fluid velocity in m/s, and A is the cross sectional area in m². a) What phase is the ethylene? How can you tell? b) If the flow rate of ethylene at the beginning of the reaction (i.e. when conversion is 0) in the reactor is 2.0 m/s, determine the mass flow rate in kg/s.

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
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3. Low density polyethylene (LDPE) is produced in a long tubular reactor under harsh conditions (T = 200 °C and 1800 bar). Ethylene is pressurized, mixed with catalyst, and pumped into the reactor where (LDPE) is produced. The reactor itself is 0.5 m in diameter and 1800 m in length. Hint: the following equations may help you. m=V-p and V=u. A Where in is the mass flow rate in kg/s, V is the volumetric flow rate in m³/s, p is the fluid density in kg/m³, u is the average fluid velocity in m/s, and A is the cross sectional area in m². a) What phase is the ethylene? How can you tell? b) If the flow rate of ethylene at the beginning of the reaction (i.e. when conversion is 0) in the reactor is 2.0 m/s, determine the mass flow rate in kg/s.
Transcribed Image Text:3. Low density polyethylene (LDPE) is produced in a long tubular reactor under harsh conditions (T = 200 °C and 1800 bar). Ethylene is pressurized, mixed with catalyst, and pumped into the reactor where (LDPE) is produced. The reactor itself is 0.5 m in diameter and 1800 m in length. Hint: the following equations may help you. m=V-p and V=u. A Where in is the mass flow rate in kg/s, V is the volumetric flow rate in m³/s, p is the fluid density in kg/m³, u is the average fluid velocity in m/s, and A is the cross sectional area in m². a) What phase is the ethylene? How can you tell? b) If the flow rate of ethylene at the beginning of the reaction (i.e. when conversion is 0) in the reactor is 2.0 m/s, determine the mass flow rate in kg/s.
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