A Laboratory reactor is designed for the optimization and reproduction of various chemical reactions, dispersal, mixing, and homogenizing processes. Applications of laboratory reactors include mixing and drying powders, developing lotions and creams, fuel research, and fiber processing in liquids and polymers. Key considerations for laboratory reactors are primarily dependent on the types of reactions taking place (polymerization, hydrocracking, etc). Other considerations include flow rate, temperature range, volume, and pressure range.
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| Company | Parr Instrument Company | Parr Instrument Company | Parr Instrument Company | Parr Instrument Company | Parr Instrument Company |
| Item | Fluidized Bed Reactors | 5400 Continuous Flow Tubular Reactors | Horizontal Stirred Reactors | Series 4570 High Pressure/High Temperature Reactors | Series 8500 Floor Stand Stirred Reactors |
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| Catalog Number | 5410 | 5401 / 5402 / 5403 / 5404 | Horizontal Stirred Reactors | 4571 / 4572 / 4575B / 4576B / 4577 / 4578 / 4575A / 4576A | 8500 |
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| Description | Parr Fluidized Bed Reactors are used extensively in the chemical process industries. The distinguishing feature of a fluidized bed reactor is that the solids bed or catalytic particles are supported by an up flow of gas. This reactor provides easy loading and removing of catalyst. This is Parr Fluidized Bed Reactors are used extensively in the chemical process industries. The distinguishing feature of a fluidized bed reactor is that the solids bed or catalytic particles are supported by an up flow of gas. This reactor provides easy loading and removing of catalyst. This is advantageous when the solids bed must be removed and replaced frequently. A high conversion with a large throughput is possible with this style of reactor. Such reactors inherently possess excellent heat transfer and mixing characteristics.
Fluidized beds have been significantly utilized in chemical processes, in which parameters such as diffusion or heat transfer are the major design parameters. Compared to packed bed, a fluidized bed has notable advantages such as better control of temperature, no hot spot in the bed, uniform catalyst distribution and longer life of the catalyst. The desirability of using fluidized beds is dependent on achieving good mixing between the solids and the suspending fluid.
Features - A gas handling and mixing sub-system used to blend and regulate the flow of reactant gas to the bottom of the reactor.
- The reactor is roughly one meter long with a 2.5 cm ID. The lower portion of the reactor incorporates an easily replaced porous metal gas diffusion plate and the top of the reactor widens abruptly to form a disengaging zone for the fluidized bed.
- Separate heaters are provided for both the main reactor and disengaging zone. A multipoint thermocouple is provided for monitoring the internal reactor temperature distribution.
- A heated cyclone separator or filter is provided immediately downstream of the reactor to capture the fines resulting from particle attrition.
- The reaction products are then cooled by a condenser and collected in a 600 mL product receiver.
- The system pressure is maintained by a dome loaded back pressure regulator.
- All system functions and parameters are monitored and maintained by a Parr 4871 Process Controller (not shown).
... Read More | Single-phase flow in a tubular reactor can be upward or downward. Two-phase flow can be co-current up-flow, counter-current (liquid down, gas up) or, most commonly, co-current down-flow.
Tubular reactors can have a single wall and be heated with an external furnace or they can be jacketed for Single-phase flow in a tubular reactor can be upward or downward. Two-phase flow can be co-current up-flow, counter-current (liquid down, gas up) or, most commonly, co-current down-flow.
Tubular reactors can have a single wall and be heated with an external furnace or they can be jacketed for heating or cooling with a circulating heat transfer fluid. External furnaces can be rigid, split-tube heaters or be flexible mantle heaters. Tubular reactors are used in a variety of industries: - Petroleum
- Petrochemical
- Polymer
- Pharmaceutical
- Waste Treatment
- Specialty Chemical
- Alternative Energy
... 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 | Parr offers a number of different reactors in the 4570 and 4580 Series in a variety of sizes and with different mountings for operating pressures to 5000 psi (345 bar) and temperatures to 500 °C. All of these reactors have been designed with suitable valves, fittings and modifications to the vessel Parr offers a number of different reactors in the 4570 and 4580 Series in a variety of sizes and with different mountings for operating pressures to 5000 psi (345 bar) and temperatures to 500 °C. All of these reactors have been designed with suitable valves, fittings and modifications to the vessel itself to operate at the higher temperature and pressure ratings. Flat, flexible graphite (FG) gaskets are used for temperatures in the higher range to 500 °C. These can be replaced with PTFE gaskets for procedures in which the temperature will not exceed 350 °C. All cart and floor stand models use ceramic fiber heaters to achieve the higher operating temperatures.... Read More | 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 |
| Type | Fluidized Bed | Continuous flow Tubular (Pipe, Packed-bed, Trickle-bed, Bubble-column, Ebulating-bed) | Horizontal Reactors | Cart or Floor Stand or Bench Top | Stirred Reactor |
| Reactions | Inquire | Carboylation, Dehydrogenation, Hydrogenation, Hydrocracking, Hydroformulation, Oxidative decomposition, Partial oxidation, Polymerization, Reforming | Hydrogenation, Isomerization, and Metathesis | Inquire | Inquire |
| Flow Rate | Inquire | 10 or 40 mL/min | Inquire | Inquire | Inquire |
| Temperature Range | up to 600 °C | up to 550C | up to 350C | 500C | up to 200 °C |
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