Month: June 2017

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Air treatment in electroplating

Electroplating is a process of a thin metal coating formation on a prepared metal surface through the use of electric current. The process involves cleaning and pretreatment of a metal surface with strong acids and surface-stripping agents, like caustic soda and chlorinated hydrocarbons. The process also involves other harmful and toxic substances, e.g. cyanides. Consequently,...

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Air scrubber clogging: venturi, cyclone, packed bed scrubbers

Accumulation of unwanted materials — clogging and fouling — is detrimental to the working function of a scrubber: it disrupts its working cycle, leads to complications and more frequent maintenance. The clogging of an air scrubber occurs due to the high particulate matter (PM) concentrations in the gas that is being treated. Over time PM...

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Venturi wet air scrubber

Venturi scrubber is a type of wet air scrubber, which means that it uses water or other liquid to scrub air. It is designed to use the energy of an incoming gas stream in order to atomize scrubbing liquid. Venturi wet scrubbers are the most popular type of scrubbers; they have been used in the...

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Packed bed scrubbers

The so-called packed bed, that is often used in air scrubbers, is a hollow tube or pipe filled with a specifically designed packing material. Packed beds are used to improve contact between different stages of a chemical reaction or another process that is similar in nature, for example, distillation processes or air scrubbing. The purpose...

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Flue gas desulphurisation uses and perspectives

In accordance with the environmental impact of power plants that run on certain challenging coal types flue gas desulphurisation (FGD) solutions need to be developed in order to achieve higher treatment quality and maximum operating efficiency. FGD technology is built on the chemical reaction that occurs between the warm exhaust gases and limestone. This reaction...