применение трехсмещенных клапанов-бабочек в нефтехимической промышленности

 
In petrochemical installations, triple offset butterfly valves have demonstrated significant advantages in applications involving large-diameter pipelines, owing to their unique design and superior performance. Compared to traditional gate valves and the high-cost V-type ball valves, triple offset butterfly valves excel not only in fast opening and closing speeds and low operational torque but also in minimal installation space requirements and lightweight construction. These butterfly valves integrate seamlessly with various driving mechanisms, offering exceptional durability and reliability, thus achieving successful deployment across multiple scenarios in the petrochemical industry.

Common Petrochemical Applications

 
The application of triple offset butterfly valves in petrochemical plants encompasses several critical areas, showcasing their importance and superior performance in industrial settings. Here are detailed examples of specific applications.

1. Cooling Water Temperature Regulation

 
In polyethylene plants, the temperature regulation loop for reactor cooling water plays a crucial role in ensuring stable operation and product quality. These loops typically involve large-diameter pipelines (exceeding DN450mm) that require the ability to rapidly and precisely adjust water temperatures to maintain optimal reactor operating conditions.
 
Advantages of Triple Offset Butterfly Valves
 
Rapid Response and Precise Control: As regulating valves, triple offset butterfly valves can swiftly open and close to adjust large volumes of water flow, ensuring stable reactor cooling water temperatures are maintained.
Emergency Shut-off Capability: In emergency situations requiring immediate cessation of water flow to prevent equipment damage or safety hazards, triple offset butterfly valves can quickly shut off fluids, achieving zero leakage and safeguarding plant and personnel safety.
Cost Efficiency: Compared to traditional gate valves and expensive V-type ball valves, triple offset butterfly valves not only deliver superior performance but also effectively reduce capital and operational costs.

2. Flue Gas Valve in Cracking Furnace

 
In ethylene plants, cracking furnace flue gas valves play a crucial role in expelling residual carbon from the furnace. These valves face stringent requirements for process media, particularly under high-temperature and high-pressure conditions where carbon particles in the process media can lead to valve seat seizing, significantly impacting valve lifespan and operational efficiency.
 
Advantages of Triple Offset Butterfly Valves
 
Anti-blocking and Longevity: Due to their unique design, triple offset butterfly valves effectively prevent solid particle accumulation on sealing surfaces, reducing the risk of valve seat seizing and extending valve lifespan.
Stable Operational Performance: Under high-temperature and high-pressure conditions, triple offset butterfly valves maintain stable operational performance, ensuring long-term reliable valve operation and providing critical protection for plant safety and stability.

3. Catalytic Cracking Unit Pipelines

 
Refinery catalytic cracking units involve pipelines handling various process media, such as flue gas inlet pipelines, demanding valves that can respond quickly and precisely under conditions requiring rapid adjustments. These pipelines typically operate under high-temperature and high-pressure conditions, necessitating valves that can reliably and consistently operate.
 
Advantages of Triple Offset Butterfly Valves
 
High Efficiency Response and Adjustment Capability: Triple offset butterfly valves can swiftly respond and adjust within extremely short response times, ensuring the safe operation of pipelines and process stability.
Adaptation to Complex Process Conditions: Tailored solutions provided by triple offset butterfly valves accommodate the characteristics of different process media, ensuring stable valve operation under diverse and complex process conditions.

Special Petrochemical Process Applications

 
The special process applications of triple offset butterfly valves encompass critical roles in petrochemical industry operations, showcasing their versatility and reliability.

1. LPG Storage Tank Pipelines

 
The characteristics of liquefied petroleum gas dictate stringent requirements for valves in main inlet and outlet pipelines of storage tanks. Triple offset butterfly valves not only meet high-flow requirements but also effectively prevent leaks, ensuring safe and stable process operations.

2. Sulfur Recovery Units

 
Triple offset butterfly valves play a prominent role in sulfur recovery units, particularly in designs featuring steam jackets suitable for transporting liquid sulfur in molten state. This showcases their critical role and superior performance in specific process applications.
 
In conclusion, triple offset butterfly valves have become an indispensable component in various process pipelines within the petrochemical industry due to their versatility, efficiency, and reliability. With advancing technology and expanding application scopes, these valves are poised to leverage their unique advantages, providing more comprehensive solutions and technical support for the safe and stable operation of petrochemical plants.