OTF-1200X-HPV-III is a high pressure and high vacuum split tube furnace with three heating zones.
Processing tube is made of Ni based superalloy, which offer a solution of heating treatment under both high positive pressure and high vacuum pressure with/without inert gas support to process special compound material.
The furnace can be heated up to max. 1100°C at 2.5 bar ( 900°C at 80 bar ).
Gas flowing system is vailable upon reuqest.
SPECIFICATIONS
Working Pressure vs. Working Temperatue
•200 Barmax. at 650°C •140 Bar max. at 800°C •80 Bar max. at 900°C •40 Bar max. at 1000°C •2.5 Bar max. at 1100°C •Never heat up above 1200°C
•The allowable pressure is calculated based on Barlow's formula. S = yield strength. Safety factory= 3
Working Gases
•Inert gas and oxygen •No hydrogen or any flammable gas
Heating Temp.
•1100°C max.for < 1hr •<=1000°C for continuous
Heating Rate
≤10°C/min
Heating Element
Fe-Cr-Al Alloy doped by Mo
Heating Zone
•Three heating zones : 150 mm + 150 mm + 150 mm •Total heating zone length: 450 mm •Constant temp. zone : 280 mm ±1°C
Temp. Control
•Three precision digital temperature controllers with 30 segments programmable •PID control method with protection of over-temp. and thermal couple broken •Temperature stability : ±1°C •PC control software and interface are included for PC operation •Three Omega K type thermocouples were implemented in the furnace
Process Vessel
•Nickel based super-alloy GH747 (Click to download GH747 nickel based alloy datasheet) •OD 85 x ID 50 x Length 1000 (mm) •Attention : Processing Tube is consumable part, you can click picture below to order replacement or spare one. •Ni-Based Super Alloy Seamless Tube for OTF-1200X80-HPV-III
Positive Pressure Sensor
•One digital pressure gauge with over-pressure alarm is installed in high pressure flange •Pressure Measurement Range : 0 ~ 15 Mpa
Flange and Fitting
•A pair of 63mm CF type flanges is included (w/ high pressure valve and 1/4 tube fitting) •2 pcs Copper o-rings (99 O.D x 82 I.D x 2.2 mm) are included ( spare cupper O-ring is available as cunsumable ) •One pair of water cooling ring , made of cupper tube , is installed on two ends of the tube ( > 10 liter / min water flow is required) •Optional torque wrench is available here to avoid overtighten the flange bolts.
Temperature Gradient
This furnace is able to achieve a temperature gradient up to 19 °C / inch (150 °C / 200 mm )if the conditions below are satified :
•Center zone is heated up to 1000 °C •Side zones remains idle
•Hytort Application, or named Hydroretorting of Shale Oil is a process developed by IGT to double the yield of shale oil and hydrocarbon gases.
Please click underline to view research paper. •The heating temperature must be limited by the certain pressure level due to vessel material strength.
Please refer to the specifications. •The pressure is increasing while the temperutre is rising during operation.
So you need to calculate the pressure changing towards your target temperature and set a safe value of pressure during process.
Safety Notes
•Ni based Super-alloy ( Waspaloy or equivalent) is a reliable processing tube which can be used under high temperature and high pressure.
It has excellent ductility and tensile property so only creep deformation happens under overpressure destruction test and following by a crack formed (usually at the hot zone at the center of tube) to release the pressure.
Brittle fracture won’t happen in the overpressure destruction test which means no tube explosion will happen under overpressure of gas •Left pics shows Ni based Super-alloy ( Waspaloy or equivalent) processing tube under overpressure test •Attention : A two stage pressure regulator must be installed on gas cylinder to limit the pressure to below 3 PSI for safe operation.Please click here to learn how to install the gas regulator. •For the use with flammable, toxic or corrosive gases, you must contact MTI engineering group for the consultation to know all the prerequisites and precautionary measures. •Attention : A two stage pressure regulator must be installed on gas cylinder to limit the pressure for safe operation.Please click here to learn how to install the gas regulator.