Title:
PID CONTROL-BASED ADAPTIVE SMART WATER INJECTION SYSTEM AND WATER INJECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2020/187338
Kind Code:
A1
Abstract:
Disclosed are a PID control-based adaptive smart water injection system and a water injection method. The system comprises a water injection portion, a power portion, a control portion, and a measurement and transmission portion. Temperature transmitters, pressure transmitters and flow transmitters are additionally arranged at inlet and outlet pipelines of various heat exchangers, and water injection points are set. Heat exchange device inlet/outlet pipeline temperature, pressure and flow signals are monitored, a control platform performs error analysis on the three signals, a PID control algorithm is used to control various adjustment valves to alter the valve opening degrees, and the water injection amount is adjusted in real time, thereby solving the defect of lag in traditional intermittent water injection, and achieving the goal of alleviating the problem of ammonium salt corrosion failure in petrochemical hydrogenation apparatuses, in addition to conforming with the concepts of energy conservation and environmental protection. The present invention is suitable for hydrogenation apparatuses in fields such as petrochemical engineering, has simple processes and strong applicability, and can be applied to hydrogenation processes having different numbers of heat exchange devices.
Inventors:
JIN HAOZHE (CN)
OU GUOFU (CN)
FAN ZHICHAO (CN)
GU YONG (CN)
WANG QUN (CN)
WANG CHAO (CN)
OU GUOFU (CN)
FAN ZHICHAO (CN)
GU YONG (CN)
WANG QUN (CN)
WANG CHAO (CN)
Application Number:
PCT/CN2020/085686
Publication Date:
September 24, 2020
Filing Date:
April 20, 2020
Export Citation:
Assignee:
UNIV ZHEJIANG SCIENCE & TECH (CN)
International Classes:
F28F19/00; G05B11/42
Domestic Patent References:
| WO2012140944A1 | 2012-10-18 |
Foreign References:
| CN110068242A | 2019-07-30 | |||
| CN109882736A | 2019-06-14 | |||
| CN101655336A | 2010-02-24 | |||
| CN101639688A | 2010-02-03 | |||
| CN103192047A | 2013-07-10 | |||
| CN105388178A | 2016-03-09 | |||
| CN207980470U | 2018-10-19 |
Attorney, Agent or Firm:
HANGZHOU QIUSHI PATENT OFFICE CO., LTD. (CN)
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