Molten Sulphur Filter

Sharplex have supplied several filters for Molten Sulphur Filtration in sulphuric acid & sulphonation plants.

Normally 'ASH' is a impurity which needs to be removed from sulphur so that further processing using molten sulphur should be smooth.

Sharplex offers horizontal pressure leaf filter for molten sulphur filtration in following two versions -

  • Shell retraction design - In shell retraction design leaf remains steady and shell is retracted to & fro.
  • Bundle retraction design - In bundle Retraction Design Shell is steady and leaf bundle is retracted to and fro.

Both the versions are operated (for opening and closing of filter) hydraulically for easy of operation.

Filtration area : from 5 m2 to 200 m2.

General Process

Initially the filter is precoated with filteraid (kieselguhr or perlite). After precoating molten sulphur from sulphur pits is fed to the filter for filtration of ash. After the filtration cake is dreid with steam. After drying is complete filter is opened and cake is removed manually by knocking at leaf bottom by wooden spatula.

Typical Filtration Cycle


Normally filter vessel is manufactured in carbon steel / boiler quality material and is jacketed. Filter leafs are made of 5 layer design and are in complete stainless steel. Leafs are bolted or rivetted design.

Cartridge Filter for Sulphur Polishing

Skid Mounted Molten Sulphur Polishing Filters at One of the Biggest Sulphuric Acid Plant

Cartridge type polishing filter are installed after main molten sulphur filters to remove traces of fine suspended particled of ash and fileraids escaped from main filter, which may choke the downstream equipments in the plant.

The removal of these fine solids will help in running the downstream equipments smooth wihtout interruptions. This will result in reducing the downtime of the plant to great extent.

Enquire Now OR Call +91-9136921232 up to 39 for more info

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