As the need to curtail air borne pollution increases, Plastica remains at the forefront in providing efficient, cost effective solutions.
To enhance the ability of providing a first class manufacturing capability is the company’s in house engineering facility to custom design the fume scrubbing system.
We have an extensive programme of fume scrubbers, coupled with a long list of case histories.
• Horizontal cross flow scrubbers
• Vertical packed towers
• Multi stage scrubbing systems
• Mist eliminators
We custom build all systems and support to meet the client demands, including control systems and monitoring.
We can also provide ongoing preventative, or maintenance on demand agreements.
To enhance the useful life expectancy of the equipment and maintain efficiency, our spares departments is available to give advice and recommendations.
The fume scrubbers are based on the gas absorption principal, which can take place in one of two ways
By physical contact and dissolution of gas into water (water scrubbers) or a scrubbing reaction between the polluting gas and a scrubbing reagent (fume scrubbers)
The fume / water scrubbers can operate with both vertical and horizontal air flows.
The scrubbers contain various phases to ensure optimum performance.
The random packing will be geometric shapes or spherical in design to give turbulent mixing of the contaminated air and recirculation liquids. The packing will again be selected to give optimum performance, chemically resistant with minimal pressure loss.
The scrubbing liquid spray section is located immediately above the pack bed. To ensure correct distribution of the recirculation liquid either a spray nozzle matrix of weir distributors are used.
Prior to discharge the clean air will pass thro the mist eliminator section. This section is designed to reduce any droplet carryover from the scrubber unit.
The liquid sump tank is located at the base of the fume scrubber body. The control of the condition of the liquid is important to ensure efficient removal of air pollutant. During operation evaporative losses will occur. Replenishment can be carried out manually or automatically.
The scrubbing liquid is pumped from the sump to the spray section via an externally mounted pipe work section. The pumps will be protected from low level isolation probes within the tank to prevent a dry running.
If chemical scrubbing is adopted, the condition of the recirculation liquid also needs to be control within recommended levels; this again can be carried out manually, semi or fully automatic.
The spent recirculation liquid may need further treatment prior to disposal.