Method of removing scale-forming substances from hot water system
AssigneesMitsubishi Rayon Co., Ltd., Mitsubishi Heavy Industries, Ltd.
InventorsHaruo Miyamoto, Tokuhisa Miyamatsu, Seiichi Shirakawa, Hidetoshi Takamoku
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Abstract
The invention is a filter which comprises a porous support covered by carbonaceous fibers having a carbon content of at least 85%, wherein the individual fibers have a length in the range of from 0.1 to 5 mm and a diameter in the range of from 1 to 50 .mu. and acidic groups in a concentration of at least 0.01 meq/g on their surface. The filter is particularly useful for removing substances from water in a supply system for a steam generator.
Claims9
In a method of removing scale-forming substances from a water supply system for a steam generator which comprises passing hot water through a filter to remove the scale-forming substances, the improvement wherein the hot water is passed through a filter comprising a porous support having a pore diameter in the range of from 5 to 200 .mu. having laminated thereon carbonaceous fibers, said fibers (a) having a carbon content of at least 85% by weight (b) a length in the range of from 0.1 to 5 mm (c) a diameter in the range of from 1 to 50 .mu. (d) acidic groups in a concentration of at least 0.01 meq/g on their surface, and (e) being laminated on the said support in an amount from 100 to 5000 g/m.sup.2.
Dependencies are inferred from the claim text.