Vertical Counter-Flow (VCF) Scrubbers
Whether it be a small compact system for a laboratory or test plant or a large multi-stage complex system for a metallurgical processing facility Polimatrix has the necessary expertise and skills to offer our clients the right solution to their air pollution problems. Through our partnerships with various South African and International companies we are able to provide an economical, cost effective and reliable solution for the majority of odor and fume scrubbing applications.
Main areas of Application:
Polimatrix provides standard and custom Fume (Gas) Scrubbing solutions for various applications.
VCF Scrubbers feature one or more vertical columns mounted on a base section which also serves as the tank for the scrubbing solution. VCF Scrubbers may have one, two or three packed bed sections depending on the application. The packed bed is filled with various Tower Random Packing types to suit the intended application. The Tower packing is available in various plastic materials, ceramic and metals. The contaminated fumes (gas) enter the column below the packed bed and are drawn up the column through the packed bed. A scrubbing solution is distributed across the top of the packed bed and filters down through the packing creating a liquid film on the surface of the packing material. This is known as a counter-flow system. The large whetted surface area provides the contact point for scrubbing (absorption, mass transfer) to take place. The total basic scrubber system comprises the Scrubber Column and Tank, a Circulation Pump, an Extraction Fan, a Chemical Dosing system and an Exhaust Stack.
VCF Scrubbers are ideally suited for the following applications:
POLIMATRIX ALWAYS INSTALLS THE EXTRACTION FAN ON THE CLEAN SIDE OF THE SCRUBBER.
This ensures that the duct and column containing contaminated air are always under negative pressure so that no contaminated air can escape the system. It also increases the longevity of the fan and ease of fan maintenance resulting in lower operational costs.
ALL POLIMATRIX SCRUBBERS FEATURE A CARTRIDGE TYPE DEMISTER ARRANGEMENT.
This eliminates the need to remove the top or end section of a fume scrubber to access the demister for inspection and maintenance. This reduces the time required for maintenance and inspection and makes this a low safety risk operation. The maintenance personnel are not directly exposed to the fumes inside the scrubber.
UNIQUE IN-LINE DOSING MECHANISM.
Most Polimatrix scrubbers which require chemical dosing feature a unique proprietary in-line dosing mechanism which eliminates the need for chemical dosing pumps thus reducing the initial cost and the total long term operational cost due to lower power consumption and virtually maintenance free operation.
IN-LINE pH, ORP and CONDUCTIVITY MEASUREMENT.
Polimatrix utilizes an in-line bypass arrangement for the installation of pH, ORP and Conductivity sensors where these are required. This arrangement allows for accurate measurement of the scrubbing solution without the effect of “dead” areas within the tank and ensures that the scrubbing solution is always maintained within the optimum range. Eliminates the risk of leaks at threaded joints in the tank wall.
THERE ARE OTHER PROPRIETARY FEATURES WHICH GREATLY REDUCE MAINTENANCE AND INCREASE EASE OF OPERATION AND TOTAL EFFICIENCY SPECIFIC TO EACH SCRUBBER TYPE.
These features will be highlighted when Polimatrix discusses the application with each client.
Scrubber Base Tank
On smaller diameter columns it Polimatrix standard to manufacture the base tank a larger diameter to provide a stable support for the column.
Lower Column Section, This section fits onto the base tank and includes:
Middle Column Section, This section includes:
Top Column Section, This section includes:
In the majority of cases this fan will be a COLASIT fan in a corrosion resistant thermoplastic material suited to the application. This fan will discharge into an exhaust stack.
This pump circulates the scrubbing solution and can also be used for blow-down (partial dumping of spent/contaminated scrubbing solution) and draining/transfer of the scrubbing solution. These pumps feature corrosion resistant materials of construction suited to each specific application
Most custom designed equipment is for use in one-off applications. These applications require a unique understanding of the various engineering plastic materials, solid design experience and an intuitive understanding of the practical application of the equipment.
Open and honest communication with our clients ensures that there is a full understanding of what is expected and what can be achieved.
Such projects are uniquely challenging but in the end very rewarding for both the client and Polimatrix.
Contact Polimatrix to discuss your unique requirements and we will gladly assist you