Vacuum Discharge Pump For Cardanol

Featuring a precision positive-displacement gear mechanism, the pump ensures a linear relationship between flow rate and rotational speed.

It offers various sealing options-magnetic coupling, single mechanical seal, or double mechanical seal-to maintain a completely enclosed pump chamber.

The pump draws material from a vacuum environment (under negative pressure) and uses the meshing gears to pressurize and discharge the medium, delivering a continuous flow with minimal pulsation for both distillates and residues.

When integrated with a servo-driven speed control system and a Distributed Control System (DCS), it enables precise regulation of the discharge ratio between light and heavy components.

This helps maintain stable vacuum levels, temperatures, and liquid film conditions within the distillation system, facilitating continuous separation and fractionation.

Features

1. Jacketed Thermal Insulation Design
The pump body features a thermal oil or hot water jacket to maintain a constant temperature, accommodating discharge temperatures between 120°C and 220°C. This prevents the viscosity of high-temperature cardanol from spiking upon exiting the pump, avoids the solidification of resinous substances on pump walls, and precludes clogging. Thermal insulation is mandatory for applications involving heavy-fraction tar residues.
2. Precision, Pulse-Free Metering
Achieves a metering accuracy of ±0.3% to ±0.5% with a smooth, pulse-free discharge flow. Independent flow control for light and heavy phases ensures stable yields, iodine values, and color specifications, while minimizing batch-to-batch variation.
3. Stainless Steel Construction
The pump body is constructed from 316L stainless steel, with 440C nitrided steel gears (2205 duplex stainless steel is available as an option). Seals are made of FFKM (perfluoroelastomer), which offers excellent resistance to swelling in the presence of phenols and withstands high temperatures-making them ideal for handling crude cardanol, decarboxylated cardanol, hydrogenated cardanol, and heavy-fraction tar residues.

Vacuum Discharge of Cardanol

- Displacement per revolution: 1.58 ~ 500 cc/r
- Flow rate range: 1 L/h ~ 5000 L/h
- Inlet vacuum: 0.01 ~ 1 Pa (molecular distillation vacuum)
- Medium temperature: 120 ~ 280°C
- Viscosity range: 20 ~ 8000 cps (at high temperatures)
- Outlet pressure: 0 ~ 10 MPa

FAQ:

Q1: What level of vacuum can the vacuum discharge pump withstand?
A: The pump can operate at an inlet pressure of -0.1013 MPa (gauge pressure).

Q2: What types of media is it suitable for conveying?
A: Light-colored refined cardanol fractions, decarboxylated cardanol, hydrogenated cardanol, CNSL-derived heavy tar residues, and cardanol oligomers.

Q3: What is the metering accuracy?
A: The factory-calibrated accuracy is ±0.3% to ±0.5%.

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