Sulphur-free lignin and derivatives thereof for reducing the formation of slime and deposits in industrial plants
OwnerJorg Oberkofler, Jeff Speddinginventors
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Abstract
The invention concerns a method for the reducing the formation of slime and deposits in industrial plants, in which water or aqueous process liquids are circulated, sulphur-free lignin or a derivative thereof being added to the system in a quantity proportional to the quantity of the slime and deposit-causing substances present in the water.
Claims23
Method for the reduction of the formation of slime and deposits in closed and/or semi-closed aqueous or acquiferous systems, sulphur-free lignin or a derivative thereof being added to the system in a quantity proportional to the quantity of substances present in the water causing slime and deposits.
Method according to one of the preceding claims, characterised by the fact that one adds the sulphur-free lignin or its derivative to the white water circuit of a paper machine.
Dependencies are inferred from the claim text.