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General
Industrial Fabrication
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Dosing
Cabinets
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The
attached picture, shows the manufacture of a Homopolymer, fully
welded weather proof, dosing cabinet, with internal segregation,
these are now being widely used on a number of sites, where concentrated
acids are being pumped around the site.
The cabinet shows all instruments and valves, contained within
a cabinet, which helps to maintain secondary containment, around
the equipment protecting operators and environment from spraying
acid, should a valve, fitting, pipe or pump fail.
These systems are also space saving and practical, locating all
instruments and valves together in inside the cabinet, rather
than installers sprawling pipe-work all over a new site, making
the site look untidy.
The segregation inside the cabinet is supplied on duty, standby
units, so when the duty pump fails and the standby cuts in, maintenance
can be carried out on the duty pump without fear of the operator
being splashed with chemicals, keeping the down time to zero.
With all instruments, valves and pumps secondary contained, within
the cabinet, running secondary contained pipe-work is simplified,
by the fact that there are no valves in line, which need to be
accessed, keeping a fully contained system up to delivery/dosing
point.
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Ducting/Scrubber
Systems
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With
ever increasing attention focusing on environmental issues, in particular
atmospheric pollution, it has become more of an essential requirement
to clean fumes before discharging to the atmosphere.
We design and manufacture scrubbers and mist eliminators for almost
any application. |
A packed
tower unit with a once-through water drenching spray system may
be sufficient to scrub and clean fume produced from decanting.
Procedures and operations that involve continuous use will require
a larger unit that would normally include a water re-circulation
pump, an extraction fan, a chemical dosing system and a waste
water treatment or effluent system.
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A
typical fume extraction system may include a number of workstations,
lip extractors, canopy hoods or fume cabinets all connected
to a plastic ducting system which conveys the fumes to a
high velocity discharge stack by way of a centrifugal or
axial fan.
Purpose made ducting and extraction systems are an important
element where environmental issues are of importance. We
can install and/or supply any part, or all of, a fume extraction
system.
We have highly skilled plastic fabrication site engineers
specialising in the fabricating and installing extraction
systems. They are able to work in a wide range of materials,
designed to suit all applications.
Trained engineers use the latest welding technology that
allows for on-site fabrication and insertion of volume control
dampers, valves, regulators, bends and sets together with
a variety of support brackets and hangers to accommodate
a range of site-specific needs.
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With
ever increasing attention focusing on environmental issues, in
particular atmospheric pollution, it has become more of an essential
requirement to clean fumes before discharging to the atmosphere.
We design and manufacture scrubbers and mist eliminators for almost
any application.
Process
description of scrubber shown
The gases from the capture area are captured by the extraction
system and suction generated by the extraction fan. The fan then
passes the gases through the scrubbing system.
From the low-level side inlet to the scrubber, the gases will
move vertically upwards through a layer of packing. This will
consist of a packing support tray and a depth of "snowflake"
type packing elements.
Above the packing, the scrubber liquor is introduced at an even
and constant rate over the full cross section of the column. The
liquor passes downwards, counter-current to the gas stream to
the integral sump, located in the bottom of the scrubber vessel.
Within the layer of packing, the gaseous contaminants are absorbed
into the liquid phase and removed from the gas stream. The large
gas/liquid contact surface area provided by the packing elements,
aids this process. Within this section the various compounds will
be removed.
Provision is made for a pH probe for the measurements of the liquor
acidity, in order to maintain the re-circulation liquor at the
optimum chemical condition for scrubbing the gases.
The optimum condition will be maintained by dosing the sump liquor
with chemicals.
From the packing, the gases exit the column through a mist eliminator.
Free droplets of water will be removed from the gas stream by
impacting on the collection elements, chevrons. The collected
moisture will coalesce into a sheet of liquid that will drain
freely back into the scrubber vessel.
The gases will then exit to atmosphere via the scrubber stack.
The scrubber shown is fabricated from PVC, with all joints being
thermally welded and spark tested, the scrubber is then glass
fibre reinforced.
The internal items, support tray, packing, mist-eliminators, etc.,
will be fabricated in Polypropylene.
The scrubber is supplied as a complete unit with the following
items on a 'stand alone' skid, manufactured from mild steel galvanised
channel.
Re-circulation/dosing pump
Extraction Fan
Pipe-work and valves
Electrical panel
Instrumentation comprising of
Flowmeters
Low flow switch
Pressure gauge
Differential pressure indicator
Level indicator with high and low switches
PH sensor and indicator
A full detailed and comprehensive operation and maintenance manual
would be
supplied with the above piece of plant.
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Machine
Guarding
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Operator
safety is provided by means of a tough polycarbonate material.
The pictures show an example of the type of guarding required
by law for operator safety, providing optical clarity and high
impact strength.
The transparent shatterproof guards are the ideal protective measure.
Can be bonded, bent, welded and machined. Will provide years of
protection and low maintenance.
More
Pictures of Machine Guarding
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Onsite
Installation
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Plastic
Pipework (All Types)
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Marcol
Fabrications are plastics experts and as such can advise on the
best and most suitable pipe system for your particular application.
As a company, we specialise in installing all types of chemical
resistant plastic pipe-work, including PVC, ABS, PVDF, Polypropylene,
HDPE, etc, We can advise on the current standards and legislation
governing the distribution of hazardous substances. We can also
manufacture non-standard pipe and fittings, if required.
We specialise in the welding of plastic pipe-work, using up to
date welding technology to carry out all types of pipe welding,
whether it is heat socket welded/butt fusion/infrared welding,
used on Polypropylene, HDPE and PVDF or for Cold Solvent cementing
for PVC/ABS.
We also offer survey, design, supply, install and guarantee top
quality workmanship with an after sales service that is second
to none.
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Skid
Mounted Products
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As
a cost saving idea for the larger projects. We have noticed that
more clients are looking to have their equipment skid mounted
prior to being delivered to site, which in turn keeps down the
on site labour costs and also keeps the pipe-work in a neat tidy
fashion, rather than being sprawled all across a new site.
We can produce general arrangement drawings for approval from
something as simple as a flow process diagram. Once approved,
the skids are manufactured, valves installed, tagged and all pipe-work
pressure tested, long before coming to site.
Building equipment this way can offer savings of at least 80%
of the on site installation cost.
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Tanks
and Bunds/Bulk Storage
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A
fully welded construction guaranteeing a virtually indestructible
join that will not rust or decay. Non destructively tested before
it leaves the workshop. Test certification available on request. |
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Resistant
against wax, oil and grease
Infinite design and dimensions
Maintenance free
Economical
Multi-purpose
Will not rust and decay
Easy clean
All weather resistant
Durable
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High
impact strength
Corrosion resistant
Suitable for contact with food stuffs (Physiological safe)
High chemical resistance against acids, alkalis, alcohol, salts (aqueous
solutions) and many solvents. |
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IINDUSTRIAL
BULK STORAGE INSTALLATIONS WITH CORROSIVE RESISTANT PIPE, VALVES
AND FITTINGS.
The next time you do your COSHH risk assessment you might consider
the advantages of a bunded bulk storage system, an inexpensive
and simple solution for your chemical storage.
Purpose made, polyethylene tanks, suitable for a variety of
chemicals including Sodium Hypochlorite, Hydrochloric Acid,
Caustic Soda, Hydrofluoric Acid, potable water and many other
substances.
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Tank
installations vary according to our clients immediate and
future needs. Mini bulk storage tank installations are an
ideal solution for smaller storage requirements and reduce
the need for small expensive carboys. The larger industrial
bulk storage tanks will accommodate larger deliveries for
major distribution depots and process plants.
We have a solution for every situation, We have the complete
package to suit your needs whatever your liquid handling situation.
If you have any doubt about your requirements or questions,
contact Marcol for free advice and information.
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More
Pictures of Tanks and Bunds/Bulk Storage
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