3 Zone Tube Furnace for Ultrasonic Spray Pyrolysis and Nano Particles Synthesis

HT1200 high temperature 3 zone tube furnace is a versatile ultrasonic Pyrolysis spray furnace system designed for nano Particles Synthesis - core-shell structured particle synthesis.  The system consists of three major modules: 1.7MHz ultrasonic enhanced bubbler, 1200 ^oC Max. 3 zone heating tube furnace, and Electrostatic Precipitator. The processing steps of a particle include aerosol generation, thermal decomposition, and nano powder collection. Such a system enables advanced synthetic method that provides control over particle size, morphology, nano / microstructure.

System Structure of ultrasonic Pyrolysis spray furnace

Aerosol Generation: 1.7 MHz Ultrasonic Enhanced Bubbler can "evaporate" catalyst liquid with literally no heat generated. A stainless steel liquid collector connects in line with the ultrasonic bubble can prevent condensing liquid from streaming into the furnace tube chamber.

Thermal Decomposition:  (900mm length) three-zone tube furnace can be heated up to 1200C maximum to pass the droplets flux across the temperature and atmosphere regulated firing zone, chemical, and physical conversion processes proceed. 

Nano powder Collection: 30KV electrostatic precipitator (700 ml ) can effectively collect nano-size particles from the carrier gas flow

The furnace can be tilted to avoid liquid flow back atomizing tank

3 zone Vacuum Tube Furnace - Thermal Decomposition

- Voltage & Power: Single Phase, 208V~240V AC, 50/60 Hz   (30A breaker required)

- Max. 7 KW

- Working Temperature: 1100 ^oC; continuous: 1200 ^oC, Max. < 1 hours

- Max. Heating / Cooling Rate     < 20oC / min

- Heating Zone & Constant Temperature Zone  

Three heating zone, 300+ 300 + 300 mm (900mm L total)

- Constant temperature zone:  600 mm with +/- 2 ^oC (if 3 zone at same )

- Heating Elements: Fe-Cr-Al Alloy doped by Mo

- Temperature Controller: Three digital temperature controllers with 30 programmable segments for precise control of heating rate, cooling rate and dwell time. Built-in over-temperature alarm and protection allow for operation

- Temperature accuracy: +/- 1 ºC.

- RS485 Communication Port (Optional item).

- Precision Eurothermo controller is available with +/- 0.1 ^oC accuracy (Optional item)

- Processing Tube: One fused quartz tube is included with ID 20.5 x OD 25 mm x L 1400 ( mm)

- Sealing Flanges & Fittings

Left side sealing KF flange which connects atomizing bubbler and 1" quartz tube with vacuum gauge.

Right side KF flang connects to the electrostatic precipitator.

Aerosol Generation - Ultrasonic atomizing bubbler

-       220VAC, 1.7 MHz Ultrasonic Generator

-       Ultrasonic power is adjustable with 8 levels

-       316 Stainless Steel liquid container with a fluoropolymer sealing ring

-       The continuous or timed mode can be set. For timed mode, time can be adjusted from 30 minutes to 180 minutes.

-       A liquid injection pump is equipped with a 60 ml plastic syringe. The speed range for the liquid injection pump is 0.004 ml/min - 70 ml/min

-       A floating flow meter is included to control the carrier gas flow rate within 0-200 SCCM.

-       A mass flow controller (MFC) is optional to precisely control the flow rate.

Nano powder Collection

High Voltage Supply

-       AC 220V 50/60Hz, 30 W Max. power consumption

-       Digital Voltmeter and Current meter, 30KV, 1.0 mA max.

-       Output voltage and current can be set by using knobs on the front panel and read from the digital display

-       Built-in Arc Protection Circuit

Electrostatic Precipitator

-       KF25 quick clamp and flange enables the quick coupling to the furnace processing tube

-       1/4" gas outlet built-in

-       Another KF25 port is built-in with the collector to connect the vacuum pump, which is required, but not included

-       PEFE plates are installed on top and bottom to insulate high voltage electrodes

-       Adjustable supports keep the collector leveled with the furnace tub

Warranty of 3 zone heating vacuum tube furnace

One year limited manufacturer warranty with lifetime support (consumable parts such as furnace liner, processing tubes, and O-rings are not covered by the warranty, please order replacements at related products below).

Application Notes of ultrasonic Pyrolysis spray furnace

A two-stage pressure regulator must be installed on the gas cylinder to limit the pressure to below 3 PSI for safe operation. Click here to learn the installation of a gas regulator.

Please tilt furnace in 10 - 15 degrees to avoid liquid back to atomizing bubbler

It is the customer responsibility to achieve the ideal parameter for particle size. Usually, the liquid injection rate and carrier gas flow rate has an important influence on particle size.

The SEM picture left is SnO2 particle (~ 500 nm - 5 um) generated by the equipment via Stannic chloride solution at 800 ^oC