Industrial Process Heating: Electric and Fuel Based

Electric heater used on industrial hopper throat.

Process heating operations supply thermal energy to transform materials like metal, plastic, rubber, limestone (cement), glass, ceramics, and biomass into a wide variety of industrial and consumer products. Industrial heating processes include drying, heat treating, curing and forming, calcining, smelting, and other operations. Examples of process heating systems include furnaces, ovens, dryers, heaters, and kilns. Many of these systems are mature technologies used ubiquitously throughout manufacturing. Process heating is used to raise or maintain the temperature of substances involved in the manufacturing process, such as the use of heat to melt scrap in electric arc furnaces to make steel, to separate components of crude oil in petroleum refining, to dry paint in automobile manufacturing, or to process food for packaging.

Electricity-based process heating systems transform materials through direct and indirect processes. For example, electric current is applied directly to suitable materials to achieve direct resistance heating; alternatively, high-frequency energy can be inductively coupled to suitable materials to achieve indirect heating. Electricity-based process heating systems are used for heating, drying, curing, melting, and forming. Examples of electricity-based process heating technologies include electric arc furnace technology, infrared radiation, induction heating, radio frequency drying, laser heating, and microwave processing.

Gas burners for process heating.

Fuel-based process heating systems generate heat by combusting solid, liquid, or gaseous fuels, then transferring the heat directly or indirectly to the material. Hot combustion gases are either placed in direct contact with the material (i.e., direct heating via convection) or routed through radiant burner tubes or panels that rely on radiant heat transfer to keep the gases separate from the material (i.e., indirect heating). Examples of fuel-based process heating equipment include furnaces, ovens, kilns, melters, and high-temperature generators.

For information on any industrial heating application, contact Hotfoil-EHS at 609.588.0900 or visit http://www.hotfoilehs.com.

Custom Fabricated Gas Trains and Nozzles Capable of 10 Million BTU Output

Gas Trains designed with safety in mind. All gas trains have dual valves on the pilot line and main, low gas pressure switch, high gas pressure switch, and proof of closure.
Fully automatic units are supplied with a 4-20 mA controlled actuator that regulates gas. The control system includes a power-on switch, power-on light, master controller with 4-20mA slave controller, air-on light, gas-on light, ignition-firing light, burner-on light, high-fire light and high-fire switch. Should the limit switch fail system come with a dump button and procedure for clearing the gas out of the lines. Construction is 1.5 inch powered coated tubing.

Other features include:

• 15HP blower motor than can move up to 2200 cubic feet/minute 
• Damper with a handle wheel for adjustment 
• Blower is powder coated for longevity 
• Starter box incorporates a lockable disconnect 
• Supplementary circuit breaker 
• Starter contactor 
• 750VA transformer 480/120 for power to the train. 

Burners are 316 stainless steel. Three standard sizes: 6-10 million BTU; 3-6 million BTU burner; 1 million BTU burner.

For more information. contact:
Hotfoil-EHS, Inc.
2960 East State Street Ext.
Hamilton, NJ 08619
Phone # 609.588.0900
Fax # 609.588.8333
www.hotfoilehs.com
Email: dap@hotfoilehs.com

10 Million BTU Burner for Custom Designed Heat Treating Furnace

Custom heat treating furnaces are designed for the tempering of metals. These furnaces can be electrically heated, or gas heated, depending on the energy source available. Tempering is defined as (from Wikipedia):

"Tempering is a heat treatment technique applied to ferrous alloys, such as steel or cast iron, to achieve greater toughness by decreasing the hardness of the alloy. The reduction in hardness is usually accompanied by an increase in ductility, thereby decreasing the brittleness of the metal. Tempering is usually performed after quenching, which is rapid cooling of the metal to put it in its hardest state. Tempering is accomplished by controlled heating of the quenched work-piece to a temperature below its "lower critical temperature". "

The video below shows the testing of a 10 million BTU ratio air burner designed for a custom heat treating furnace used to pre-stress large metal components prior to welding. Hotfoil-EHS manufactures complete furnace systems using OEM burners and in-house developed control systems.

For more information, contact:

Hotfoil-EHS
2960 East State Street Ext.
Hamilton, NJ 08619
Phone # 609.588.0900
Fax # 609.588.8333
Email: dap@hotfoilehs.com