REACTOR LIQUID COOLDOWN WITH HEAT EXCHANGER
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United States of America Patent
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app pub date -
Aug 1, 2016
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Aug 1, 2016
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Abstract
A reactor liquid cool down method is provided. The method includes obtaining a warm recycle stream (102) from a reactor (101) and compressing the warm recycle stream (102), thereby producing a compressed warm recycle stream (104); cooling a compressed warm recycle stream (104) with a controlled liquid cryogen stream (110) in a heat exchanger (107), thereby producing a cool recycle stream (112), wherein the cool recycle stream has a mean fluid temperature, monitoring the mean fluid temperature and comparing the mean fluid temperature to a predetermined control valve set point, thereby defining a temperature deviation; modulating a temperature control valve (109) to vary the controlled liquid cryogen stream (110) in order to produce a temperature deviation that is less than a predetermined value, and returning the cool recycle stream (112) to the reactor (101).
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