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Electrical Equipment |
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Armstrong Chemtec
Group, having its parent company, Armstrong Engineering Associates,
Inc., in Pennsylvania in the U.S.A. and its wholly owned subsidiary, Chemtec UK
Ltd., in Beith in Scotland, is specializing in Process Heat Transfer.
For over 70 years,
Armstrong Chemtec Group has been designing and manufacturing heavy duty
industrial equipment for some of the most demanding and hazardous processes in
the Chemical, Petrochemical and Oil Refining Industries and has supplied the
same globally.
With design engineers who
are the most experienced and knowledgeable in the industry, Armstrong Chemtec
Group can determine the best type of electric heater for a specific application
and provide a perfect, custom designed heater for the desired process duty.
Armstrong Chemtec Group do
not size electric heaters from a table of watt densities, nor do they have a
standard line of light duty commercial heaters in sizes which never entirely
match the nonstandard requirements of their clients. Armstrong Chemtec Group’s
electric heaters are designed to meet all thermal and hydraulic constraints with
special attention given to the specific flow rates, pressure/temperature
conditions, fluid physical and corrosive properties and fouling potential for
each individual heater.
Armstrong Chemtec Group’s
electric heaters are uncompromisingly designed and manufactured to optimally
achieve each individual client's process, mechanical, safety and reliability
requirements.
The range of Armstrong Chemtec Group’s
Electrical Equipment is as follows; |
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- Electrofin Immersion
Heaters - These finned element heaters are
especially suitable when process conditions or fluid properties result in a low
heat transfer rate from electric element to process fluid. The fins minimize
element temperature and thereby reduce the possibility of heating element
burnout and product degradation. These heaters have all the features of
Armstrong Chemtec Group's electric immersion heaters with the added advantage of
packing significantly more heat transfer surface into a smaller diameter shell.
Electrofin Immersion Heaters are used for heating low pressure gases, viscous
liquids and some two-phase mixtures of gases and liquids.
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- Fluidized Bed and
Reactor Vessel Radiant Heaters - This type of radiant heater is used
for maintaining or increasing the temperature in a prescribed section of a
fluidized bed reactor or other reaction vessel. Such equipment is widely used in
the chemical process industries and often requires high temperature heating.
Armstrong Chemtec Group's radiant heaters have been widely used in such
installations where typical duties are for catalyst
regeneration/activation/dehydration or Polysilicon manufacturing. For this type
of application Armstrong Chemtec Group's radiant heaters are provided in three
120 degree sections so that they may be installed around the vessel and easily
removed for maintenance.Armstrong Chemtec Group's impedance heaters, ranging in
size from 10kW to larger than 1MW, have been used in a wide variety of difficult
process applications such as heating supercritical water & other fluids, high
temperature gas heating, tubular reactors requiring heat input, heating to
temperatures above 1850°F (1010°C) and heating fluids at pressure higher than
3500 psig ((240 barg.).
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- Impedance Heaters
- Armstrong Chemtec Group's impedance heaters are direct electric heaters for
process fluids in which a metallic pipe transmits electric current and
simultaneously pressurizes fluid flowing along its length. The resistance of the
fluid carrying pipe produces heat which is absorbed by the fluid in contact with
the pipe’s inner surface. In this equipment, the pipe acts as the pressure
containment vessel, the heating element, and the heat transfer surface.
Armstrong Chemtec Group's design prohibits current from entering connecting
piping without special electrical isolation devices.
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- Immersion Heaters
for heating process gases such as Hydrogen, Air, Hydrocarbons, Regeneration
Gases, Reduction Gases and others to temperature as high as 1112°F (600°C).
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- Radiant Heaters
for heating fluids such as Hydrogen, Silicon Tetrachloride, Fluorine Compounds,
Hydrocarbons, Air, Helium and others.
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- Control Panels
- Armstrong Chemtec Group custom designs and manufactures every power control
panel to assure that the specific heater, for which the controller was designed,
will provide the maximum performance. Every control panel is built to industrial
specifications, and all components used in the manufacture have been field
proven. Heavy duty and conservatively sized power cabling is used. Designs
according to NEMA, NEC, CSA and IEC are available where appropriate.
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