| 摘要 |
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) with a mean temperature; mixing a compressed warm recycle stream (104) with a controlled liquid nitrogen stream (110) in a stainless steel mixing zone (107), thereby producing a cool recycle stream (112), 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 nitrogen 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). |
| 主权项 |
1. A reactor liquid cool down method, comprising;
obtaining a warm recycle stream from a reactor and compressing the warm recycle stream, thereby producing a compressed warm recycle stream, where said compressed warm recycle stream has a mean fluid temperature, monitoring the mean fluid temperature and comparing the mean fluid temperature to a predetermined minimum temperature, closing the temperature control valve, closing a first control valve, a closing second control valve, and opening a bypass control valve if the first mean fluid temperature is less than the predetermined minimum temperature,
wherein the first control valve and the second control valve isolate the stainless steel mixing zone, andwherein the bypass valve allows the warm recycle stream to return to the reactor, comparing the mean fluid temperature to a predetermined control valve set point, thereby defining a temperature deviation, mixing a compressed warm recycle stream with a controlled liquid nitrogen stream in a stainless steel mixing zone, thereby producing a cool recycle stream, wherein the cool recycle stream has a mean fluid temperature, modulating a temperature control valve to vary the controlled liquid nitrogen stream in order to produce a temperature deviation that is less than a predetermined value, and returning the cool recycle stream to the reactor. |
