Sustainable Solutions by Innovative Technology

Electroplating is a commonly used electrochemical surface treatment for corrosion-sensitive metals. With this process, an additional corrosion-resistant metal layer is applied electrically in order to maintain the mechanical properties for a longer period of time. Electroplating ensures, among other things, better resistance to corrosion, better protection against damage and scratches, and a better appearance of constructions or machines, such as in chrome plating. The most common electroplating techniques are anodizing, electrolytic nickel plating, and electrolytic galvanizing.

There are circumstances in which the contaminated gas to be absorbed is not led directly into a scrubber. In certain processes, (combustion) gases often arrive at hot temperatures, which make it necessary to manufacture the scrubber from a stainless steel or other (expensive) precious metal. A satisfactory solution for this is to place a hot temperature resistant quench in front of the scrubber so that the scrubber can be manufactured from plastic (PE, PP, GRP, etc.).

In (chemical) processes, odor-bearing components or aerosols can be originated under certain conditions and end up in gas streams. In respect of the current legislation and nuisance to the environment, it is necessary that these odors are removed by, for example, a wet gas scrubber.

The washing liquid is recirculated by means of a centrifugal pump which is connected on the suction side to the liquid buffer in which the washing liquid is stored. In certain areas where only (relatively) hard water is available a water softener can be used for the makeup water. The hardness of the water has a major influence on the efficiency of the scrubber process. The washing liquid is recirculated and will be periodically drained based on certain parameters. The liquid level is then restored with fresh makeup water. When this fresh water contains (a lot of) magnesium and calcium this will lead to high concentrations of salts which will increase the hardness because during the discharge process the salts will largely remain in the liquid buffer.

When designing and manufacturing the scrubbers, Ravebo considers factors as available footprint, pressure, temperature, corrosion resistance to chemicals to ensure a long service life. For instance, plastic as a construction material offers low weight and good corrosion resistance, low operating costs and a long service life, but on the other hand this is not suitable for high(er) pressures and temperatures. With respect to applications of chemical scrubbers, in most cases a suitable stainless steel will be more beneficial, but in addition of a higher weight, it possesses all the positive characteristics for an exceedingly long service life.