| Description | The 8500 Series of stirred reactors, with volumes of 50 L or 100 L, are the largest reactors offered by Parr. This series expands the available volume of our standard offering by more than five times, while retaining the easy-to-use features our customers have come to expect from Parr. Ideally The 8500 Series of stirred reactors, with volumes of 50 L or 100 L, are the largest reactors offered by Parr. This series expands the available volume of our standard offering by more than five times, while retaining the easy-to-use features our customers have come to expect from Parr. Ideally suited for scale up or pilot work, the geometry, features, and operation are very similar to that of smaller Parr reactors, but with a volume intermediate between lab-scale and traditional production scale stirred reactors.
As shown below, the 4848 Reactor Controller with associated 3 zone slave box allows for electric band heater control, or a jacket can be welded on the cylinder exterior for temperature control via circulator.
The base units are available with a 725 psi (50 bar) pressure rating, though higher pressure ratings are available upon request. As with other Parr vessels, these reactors can be constructed of a variety of commercially available corrosion-resistant alloys.
Features - Maximum Pressure (MAWP), 725 psi (50 bar)
- Maximum Temperature, 200 °C
- PID temperature control with ramp and soak programming
- Variable speed motor and gear drive
- Three zoned band heater or welded jacket
- Hoist for reactor head (manual or electric options)
- Bottom drain valve (actuated or manual options)
- Control thermocouple
Standard head fittings & internals include: - FKM O-ring head seal
- Extra heavy duty magnetic drive
- Stir shaft and stirrer assembly
- Safety rupture disc assembly
- Pressure gage with optional pressure relief valve
- Gas inlet and release needle valves
- External solids charge assembly
- Spiral cooling coil
- Custom options available
... Read More | This system incorporates three tubular reactors that can be configured as required to operate in a strictly parallel fashion or in a cascade arrangement where the products from one reactor are immediately directed to a second reactor. This type of system can support reaction schemes including but This system incorporates three tubular reactors that can be configured as required to operate in a strictly parallel fashion or in a cascade arrangement where the products from one reactor are immediately directed to a second reactor. This type of system can support reaction schemes including but not limited to the Fisher-Tropsch process, methanation reactions, steam reforming and other similar processes.
The Fisher-Tropsch process converts carbon monoxide and hydrogen into oils or fuels that can substitute for petroleum products. The reaction uses a catalyst based on iron or cobalt and is fueled by the partial oxidation of coal or wood-based materials such as ethanol, methanol, or syngas. This reaction scheme offers a promising route to producing economical renewable transportation fuels. By carefully controlling the temperature and oxygen content, resulting products can range from syngas to “green diesel”.... Read More | Stirring biomass such as straw or grasses is not easy to do in a vertical reactor. A line of reactors has been developed by Parr Instrument Company to function horizontally. These new reactors are secured vertically for loading and then safely tilted horizontally for stirring. The reactor can even Stirring biomass such as straw or grasses is not easy to do in a vertical reactor. A line of reactors has been developed by Parr Instrument Company to function horizontally. These new reactors are secured vertically for loading and then safely tilted horizontally for stirring. The reactor can even be designed to tilt upside down for discharge. Horizontal reactors can be designed for capacities ranging from 0.1 liter to 10 liters. The larger systems can be controlled pneumatically to tilt the system upright to open the bottom drain valve. These horizontal rectors can obtain temperatures up to 350 °C and maximum pressures of 1900 psig.... Read More | For Evaluation of Corrosion Inhibitors per ASTM G170 and Other Methods Evaluation of corrosion inhibitors for use in refinery and oilfield applications typically requires apparatus that can simulate the interaction between the corrosive fluid and the carbon/low alloy steel used in the construction For Evaluation of Corrosion Inhibitors per ASTM G170 and Other Methods Evaluation of corrosion inhibitors for use in refinery and oilfield applications typically requires apparatus that can simulate the interaction between the corrosive fluid and the carbon/low alloy steel used in the construction of the refinery, pipeline, or drilling equipment. ASTM G170 describes the use of a rotating cage (RC) for such testing. Parr can provide a complete high pressure, high temperature RC system (pictured) which typically includes the following components: - Reactor system made of Alloy C276 or other corrosion resistant alloy, with included rotating cage
- Gas feed system to deliver CO2, H2S, or N2
- Liquid feed system to deliver acid or inhibitor
- Reflux condenser and pressure controller
- Automated or manual control and data logging system
Pressure and temperature ratings, reactor volume, material of construction, number of gas and liquid feeds, and control system specifics can be customized to meet individual testing requirements.... Read More | These are the most popular of all Parr Stirred Reactors. Although they are called “Mini” reactors, they offer a range of sizes large enough to work with significant sample sizes, yet small enough to be handled with ease by all operators. They are made in both fixed head and moveable vessel styles, These are the most popular of all Parr Stirred Reactors. Although they are called “Mini” reactors, they offer a range of sizes large enough to work with significant sample sizes, yet small enough to be handled with ease by all operators. They are made in both fixed head and moveable vessel styles, with a choice of either a self sealing O-ring closure with no cap screws for working temperatures up to 225 °C, or with a flat, PTFE gasket for higher temperatures up to 350 °C sealed with six cap screws in a split-ring cover clamp.
Choosing the high temperature option (HT) boosts the maximum temperature to 500 °C, but de-rates the MAWP to 2000 psi (138 bar). Standard Mini reactors can be converted to high temperature reactors (500 °C max temperature and 2000 psi MAWP) by changing the head openings to cone connections, replacing the valves with high temperature valves, replacing the gasket with a graphoil Flat Gasket, replacing the heater with a ceramic fiber heater, and replacing the split ring. Contact Parr for details.
Although internal and external space is limited in these small vessels, gas entrainment impellers, catalyst baskets, condensers and other options are available. All reactors in this series can also be easily converted from one size to another by simply substituting a longer or shorter cylinder with the corresponding internal fittings and heaters.... Read More |