Advanced Technology For Continuous Flow Indirect Heating and Cooling

Any applications where you need to put heat into or take heat out of a solid, sludge or slurry is a great application for the BCR thermal processor. Screw type heat exchanger technology has been used around the world for the agricultural, chemical, construction and food industries for over 90 years. This versatile system is capable of heating or cooling everything from Apples to Zinc.

For more applications, please see our installation list.

Read through BCR’s technical literature to discover our difference.

Nickel Ore Processing

Perth Australia

Plastics to Oil

Oregon USA

Refinery Tank Bottoms

Siberia Russia

Titanium Powder Production

Illinois USA

Refinery Tank Bottoms & Spent Catalyst Processing

Louisiana USA

Uranium Concentrate Pellets

Idaho USA

Algae Processing

Idaho USA

Precipitated Silica Dryer

California, USA

Molybdenum Processing

Cananea Mexico

Minera Mexico / M3 – Moly Dryer Project

Roca Mines — Canada
Equipment: Moly Dryer
Process: Dry Molybdenum

Freeport McMoran
Equipment: Moly Dryer
Process: Dry Molybdenum

FL Smidth
Project: Teghout
Process: Dry Molybdenum

FL Smith
Project: Mongolia
Process: Dry Molybdenum

M3Engineering
Project: Cananea Mexico
Process: Dry Molybdenum

The BCR ELECTRIC-SCRU^TM is an electrically heated screw-type heat exchanger for continuous thermal processing™ of a wide range of materials. The ELECTRIC-SCRU^TM incorporates multiple heating zones with the unique advantage of being able to provide controlled heating at different process stages within the same unit. Feedstocks can be heated to over 1200F while under a sub-ambient vacuum or pressure. The largest quad screw units utilize four augers with the capacity of over 6 MMBtu/hr of available heat output. Depending on the application, the Electric-Scru^TM can incorporate single, double, or quadruple rotors. The Electric-Scru^TM processor can be fabricated from carbon steel for low-temperature applications or specialized high temperature, corrosion-resistant alloys for higher temperature applications.

ELECTRIC-SCRU™ ADVANTAGES

• Capable of heating feedstocks to over 1200F
• Multi-zone time/temp process control
• Sealed and inserted process chamber
• Self-Cleaning rotor design for sticky materials
• Uniform or zoned heating of the shell and rotors

Electrical heating elements contained around the parameter and within the hollow core of the screws are operated to heat the screws evenly at a controlled rate. Thermocouples are installed at the discharge end of the processor, which measures the material temperatures at the specified location. The equipment is designed airtight with nozzles for possible injection of an inert gas such as nitrogen to limit the oxygen content. The housing is insulated for minimal heat loss. An adequate number of vapor ports are installed in order to collect the off-gas emissions generated during system operation.

An electric or hydraulic motor is installed at the feed end, which drives the screws at a controlled rate. The motor is designed to have an adequate torque capacity capable of starting the screws even when it is loaded with material. The material of construction exposed to heat and product is generally 310 stainless steel. The screw flights can be coated in a hard surfacing overlay to minimize wear on the flights.

Holo-Scru^TM: Highest Efficiency, Greatest Versatility, Most Widely Used Technology

Heat Transfer Mediums Include: Thermal Oil, Steam, Liquid Salts, & Water

With over two thousand installations worldwide, hollow screw processors are the most widely used and versatile thermal processors for bulk materials on the market. The BCR Holo-Scru^TM is a continuous, indirectly heated screw-type heat exchanger that can be used for heating, cooling, drying, and a variety of other processes where there is a need to put heat into or take heat out of flowable materials. The Holo-Scru^TM consists of hollow flighted rotors and a jacketed housing through which a medium such as water, steam, or thermal heat transfer fluids are circulated. Holo-Scru^TM processors are available with single, twin, or quadruple rotors up to 60 inches in diameter. Holo-Scru^TM processors used for heating have the highest thermal efficiency due to the continual closed-loop recycling of heat transfer medium. The result is almost all the heat put into the system is imparted into the bulk material with very little being lost to the environment.

• Max Operating Temperature: 720˚F
• Max Operating Pressure 350 psi
• Max Operating Vacuum 50 millitorr

Heating:

• Pre-heating ahead of processing or drying operations
• Chemical processes
• Sterilization of food products
• Pharmaceuticals

Drying and Calcining:

• Water removed from slurries, sludges, and filter cakes
• Molybdenum drying and roasting
• Industrial sludge drying
• Solvent Recovery: Solvent removal from polyethylene, polypropylene, rice bean, soybean meal, and chemicals

Cooking:

• Food Waste
• Fish Meal
• Rendering
• Animal feed

BCR’s Cooling-Scru^TM technology, with indirect cooling, can deliver the product exit temperature you need while maintaining a continuous (in/out) process flow. Indirect cooling technology delivers accurate temperature control without directly contacting the product with liquids or gasses. The rotor and housing of the screw conveyor are jacketed allowing the cooling medium, water or water glycol mixture, to indirectly cool the feed as it is conveyed down the length of the Cooling-Scru^TM. The cooling can occur at ambient pressure under pressure, or vacuum. Cooling-Scru^TM technology can be used to cool anything from Apples to Zinc.

• Max Operating Temperature: 1800˚F / 30 ˚F
• Max Operating Pressure 35 psi
• Max Operating Vacuum 10 in H20

Common Products Cooled with Cooling-Scru Include:

• Fly Ash Cooling
• Bottom Ash Cooling
• Dried Biosolids
• Lime Cooling
• Food Products

• Pharmaceuticals
• Polymers Crystalline
• Chemicals
• Biomass Pellets
• Carbon Black