Heatec EHI Electric Heaters

Overview

Heatec EHI Electric Heaters are commonly known as electric circulation heaters or electric process heaters. They are used mainly by companies engaged in manufacturing and processing. This type of heater is popular due to its small footprint, high thermal efficiency and low maintenance. They do not require an exhaust stack. The heaters can be used to heat thermal fluid that heats other plant equipment. Or they can be used to directly heat a liquid or gas product that flows through the heater, including chemicals, oil, water, air, nitrogen and steam.

EHI heaters are available in a wide range of thermal outputs, from 100 kilowatts to about 3 megawatts. (A kilowatt is equal to 3,412 Btu.)

Applications

Roofing & Construction Products

Throughout the asphalt/roofing industry efficient heating systems and services are needed as well as reliable storage systems. Astec has an extensive background supplying equipment designed for heating and storing liquid asphalt as well as experience with all types of thermal systems.
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Power Generation

Power generation is essential to modern life and industry. The power generation industry depends on heating equipment and systems to meet its demands. Astec serves the power and electricity generation industry with a number of products such as thermal fluid heaters, process heaters, heat economizers, and expansion tanks and pump skids.
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Plastics & Thermoplastics

The plastics industry relies on industrial heaters to mold, melt, mix, and prep plastics. Astec manufactures and installs an extensive range of thermal processing equipment for the production of plastics and thermoplastics.
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Petrochemical

The petrochemical industry is fundamental to our contemporary world. It supplies many of the raw materials that we rely on: plastics, medicines, lubricants, synthetic rubbers, and synthetic fibers. The petrochemical industry relies heavily on various thermal processes and heat-controlled methods to produce its vital materials. Astec components used in the petrochemical industry include heaters, controls, steam generators, and heat recovery systems.
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Paints, Resins & Adhesives

Production of paints, resins, and adhesives involves complex chemical processes that demand sophisticated, reliable thermal processing systems. Astec has a long history of producing trustworthy and efficient thermal systems that can be used in the production of paints, resins, and adhesives.
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Food & Beverage Production

Large-scale, commercial food and beverage production relies on thermal processing techniques to ensure the safety of consumables. Reliable and efficient systems are critical to ensure safe food and beverage production. Astec has extensive experience with supplying systems for large-scale food and beverage production.
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Crude Oil & Natural Gas Processing

Oil refining and gas processing are procedures that turn these complex chemical mixtures into a range of usable fuels. Refining and processing crude oil and natural gas require highly reliable and efficient heating systems and services. Astec produces a number of reliable and efficient components for use in oil refining and gas processing including heaters, tanks, heat recovery systems, and expansion tanks.
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Chemical

Chemical plants convert oil, natural gas, air, water, metals, and minerals into chemical products which are used to manufacture numerous consumer products and play an important part in agriculture, manufacturing, construction, and service industries. The transfer of heat is an essential component of all chemical processes. An efficient heat transfer system is a key to manufacturing many chemicals.
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Asphalt Mixing

A thermal mixing process is required to turn aggregates and liquid AC into an asphalt pavement mix for road construction. This makes an asphalt mixing plant necessary for road construction. The complete line of Astec asphalt mixing plants, and its range of capacities and features, gives you the choices and flexibility to create your optimum solution.
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Agriculture & Fertilizer

Modern agriculture practices utilize thermal processes to accomplish a number of goals. Today's sophisticated systems help ensure both safe and efficient production both in the field or in the production of fertilizers. Astec has a variety of products and systems well-suited to the agriculture industry and fertilizer production.
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Downloads

Heatec EHI Electric Heater Brochure - English
Download (pdf) 519 KB

Features

Heatec EHI Heater Design

We take special care to design the heater for optimum watt density and flow through its heating chamber. The heating elements have large heat transfer surface areas, which reduce heat flux rates. The lower the better. And ours are lower than those commonly used by others. We size the chamber and heating elements to achieve an ideal fluid velocity of 5 to 13 feet per second. The heating chamber is built to ASME code.
The types of metal used in construction of the heater are critical. They must be fully compatible with the materials being heated. We carefully select all parts that come into contact with the material being heated. Wetted parts may be carbon steel, stainless, Incoloy, Inconel, or another material, as necessary.
Heatec EHI Heater Packages
The heaters can be customized to meet your specific needs. We offer them as skid mounted packages with a variety of options:
- SCR control panel
- Expansion tank
- Main pump
- Backup pump
- Strainer
- Side stream filter
- Valves
- Cooler
Heatec EHI Heater Power

EHI heaters can be configured to operate on electrical power provided by electrical utilities throughout the world. Our standard configuration of electrical power is for 3-phase, 480 volt, 60 hertz alternating current. Some users may need to increase available demand from their utility, depending on the wattage of their heater.
We offer a variety of control panels for use on heaters that operate in locations classified as hazardous in NFPA 87 code.