In the petrochemical industry, actuators are key components of automated control systems, used to precisely control valves, dampers, regulating devices, etc., to ensure safe and efficient process operation. The following are the applications and features of actuators in this industry:
1. Main application scenarios
(1) Process control
Crude oil transportation and processing: regulating the flow and pressure in the pipeline (such as pump outlet control valve).
Distillation and cracking: controlling the reactor feed valve and the bottom reboiler steam valve to ensure stable temperature and pressure.
Catalytic device: slide valves and plug valves used in the catalyst circulation system require high wear resistance.
(2) Safety interlock system
Emergency shut-off (ESD): Fault-closed (FC) actuators for gas/toxic medium pipelines, which quickly shut off in case of fire or leakage.
Pressure relief protection: Fault-open (FO) actuators for safety valves (PSVs), which automatically release in case of overpressure.
(3) Public works
Steam system: control of boiler feed valves and temperature and pressure reducing valves to prevent dry burning or overheating.
Cooling water system: Keep open (FO) in case of failure to avoid overheating of key equipment.
(4) Storage and transportation facilities
Storage tank inlet and outlet valves: Liquid level interlock control to prevent overflow or emptying of the tank.
Loading and unloading station: Oil and gas recovery valve, emergency pull-off valve to ensure safe loading and unloading.
2. Industry standards and specifications
API 6D: Pipeline valve actuator design standard.
IEC 61508/61511: Functional safety (SIL level certification).
NACE MR0175: Anti-sulfurization stress corrosion requirements.
In the petrochemical industry, the selection of actuators needs to comprehensively consider the media characteristics, safety level, and process requirements:
1. Pneumatic FO/FC actuators are preferred in high-risk areas (such as refinery flare systems);
2. Intelligent electric actuators can be used in precise adjustment situations (such as ethylene cracking furnace feed control).
Zhejiang Jiutai Valve Co.,Ltd. is a manufacturer specializing in R&D,development and production of pneumatic angle seat valves. The company has perfect technical force, skilled
production technology, perfect testing equipment and excellent product performance. The company has provided a large number of pneumatic angle seat valves for all walks of life.
Poppet valve, the annual shipment volume is as high as 100,000 sets.
Our angle seat valve products can be widely used in fluid control in various industries,including beer and beverage, textile printing, dyeing and bleaching, food processing, rubber
machinery, organic and inorganic chemicals, high temperature cleaning and disinfection, water treatment and other industries. The applicable medium is water, liquid, neutral gas,
water vapor, slightly corrosive gas and liquid.