A typical premix system that we frequently supply for use on cement
kilns all over the world consists of:
SS1 control unit (similar to the CU6 but with an
integral 24Vdc power output to the premix unit).
CA170B premix unit.
J170PE torch made from mild steel tube and may be over
15 metres long.
LT cable to connect the control unit to the torch.
1/2" hose to supply the air and gas mixture from
the hose to the torch.
The system operates on bottled propane and compressed air to
give a heat release of approximately 170,000 BTU/hr. The torch may be 15m
long and so must be made in short sections for transportation. Once
on-site, the sections are welded together.
The following system is typical of the inspirated systems
supplied to oil refineries.
A system will consist of the following items:
CU7/3 in EExd enclosure.
J250 E torch with gas injector, including SA82
Signal station with start pushbutton and status
Interconnecting cables and glands.
This is an inspirated system that operates on natural gas or
Air for combustion is taken from the atmosphere. The system has a heat
release of approximately 100,000
BTU/hr. The signal station
has a start pushbutton and a lamp to indicate that the torch is lit. The
supply of gas to the torch is controlled by other equipment and so is not
supplied by Igniters. Interconnecting cables between the control unit and
signal station will be supplied to the length required
A typical spark-only system consists of:
The encapsulated coil is fitted to the main installation and
the SPG1A is located at a convenient place.
When the requirements of a contract cannot be fully met by
standard equipment, we will design a system to suit the application. The
system is usually based on standard designs, which, with a few
modifications, can be adapted to suit the application. The following are
examples of a few recent bespoke systems.
A customer needed a system to simultaneously ignite three burners
with a single torch. The burners are close together forming a
triangle and there is a single port in the centre of the triangle through which the
torch is to be
inserted. Our solution was to design a three-way burner head that fits
onto a standard J250EI torch. The burner head was hand made from alloy 800HT and diverts the flame in three directions.
A customer needed a mobile, battery operated
system. The solution was to design a trolley onto which three
explosion-proof enclosures were mounted. The first enclosure houses a
12V sealed lead-acid battery, the second enclosure houses a 12V dc to
110V ac inverter, and the third enclosure houses a CU6/5 control unit.
A gas control line was mounted onto the trolley and there was space
for a 26Kg propane bottle and the torch. Provision was also made for
the connection of a battery charger.
A customer needed a portable spark-only system for
use in a potentially explosive atmosphere. The solution was to design
a carrier onto which two explosion-proof enclosures were mounted. The
smaller of the two enclosures contains a 12 V sealed lead-acid battery and the
larger enclosure contains a 12V dc spark generator. We also designed a
spark-only torch based on the P78E, making it lightweight and easy to
A customer needed a system to ignite a pair of flare
stacks that burn off waste gas from an industrial process. The system
is exposed to the elements on the coast and is located on the roof of
a tall building. The system is also exposed to high temperatures from the
Maintenance time is limited due to the second flare stack being in use
whilst the first is being in overhauled, and vice-versa. Our solution was to locate a CU6
control inside the building well away from the elements. A premix unit,
based on the CA170, was housed inside a stainless steel enclosure and installed
close to the flare stack. A bespoke torch was designed. It is loosely
based on a J250E torch. The torch is split into two parts; a base that
is attached to the flare stack and the remainder is removable for
maintenance away from the elements. The two sections are joined by a
flange arrangement, with the conductor rod being joined by a sprung
plunger. A flame elbow on the torch tip deflects the flame 90 degrees
into the flare stack. An SA82 encapsulated coil is mounted onto the
A customer needed two systems for use on process system.
Each igniter system consists of a CU7/3 control unit, J170E torch with
retraction mechanism and premix unit. The two CU7/3 control units were
housed in a single enclosure. Each J170E torch incorporated a
thermocouple to monitor the temperature at its tip. The pneumatic
retraction mechanisms were designed for the contract. The premix
unit was mounted on top of the retraction mechanism. A sealing gland
prevents any gas from the process escaping to the atmosphere and
a ball valve prevents the escape of process gas when the igniter is
removed for maintenance.
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