PET Solid-State Polycondensation (SSP) Equipment

The design principles shall be determined through negotiation between Xinzelin Company and the buyer's representatives during the design condition review meeting or the preliminary review meeting. In the absence of special requirements from the customer, all piping design codes shall default to GB (Chinese National) standards. Xinzelin Company will provide the equipment layout drawings, piping layout drawings, and electrical schematic diagrams after equipment installation. Below are some sample layout drawings.

Solid-State Polymerization System

SSP Reactor / SSPLINE-B25

The solid-state polymerization of pellets is carried out in this specially designed drum-type unit. The pellets are fed into the drum, where they are heated nder vcuum. Prior to the SSP process, a crystallization and drying step is performed at a controlled heating rate, followed by further heating to reach the temperature required for solid-state polymerization. Under high vacuum conditions, the monomers generated by the reaction are continuously removed, driving the polymerization forward until a high-viscosity product is obtained.

Rotary joint: continuous high-temperature operation; shaft and seals meet high-temp resistance and sealing requirements.

SEW-EURODRIVE's intelligent integrated gearbox concept features a particularly robust design and low-noise gearing. Its torque and dimensions are finely graded, perfectly adapting to all application requirements—even under demanding operating conditions.

Vacuum System
Vacuum Cyclone Separator / VS-800

This unit is designed for the condensation, separation, and collection of low-molecular substances, impurities, and decomposition products generated during the reaction, thereby reducing the risk of clogging in the vacuum pump system.

Heating System

Electric Heat Exchanger / HE-200

This unit is used to heat reactors and melt pipelines. The system employs a liquid-phase heat transfer medium (THERMINOL 66), an electric heat exchanger equipped with an expansion tank, and other heating devices shared across the entire heating system.

Thermal Oil Pump / RYT-80

The high-temperature thermal oil pump is designed for long-term operation at elevated temperatures, with both the shaft and seals engineered to meet high-temperature resistance and sealing performance requirements.

Cooling System
Cooling Exchanger / CE-30

This unit is used to heat reactors and melt pipelines. The system employs a liquid-phase heat transfer medium (THERMINOL 66), an electric heat exchanger equipped with an expansion tank, and other heating devices shared across the entire heating system.

Packaging System
Rotary Feed Valve / SK80L

Finished product is discharged from the SSP silo to the finished product storage bin via compressed air.

Finished Product Storage Bin / S-12

This bin is used to store the product after the SSP (Solid State Polymerization) process.