A kind of preparation method of phosphorus-free scale inhibitor and its filtering device

Abstract

The invention discloses a preparation method of a phosphorus-free scale inhibitor, and a filtering device thereof. The phosphorus-free scale inhibitor is prepared from a component A and a component B,wherein the component A is prepared from the following components by weight: 10-15 parts of methyl acrylate, 5-8 parts of lignocellulose, 4-8 parts of urotropine, 1-3 parts of triethanolamine and 8-15 parts of polyepoxysuccinate, and the component B is prepared from the following components in parts by weight: 15 to 18 parts of hydrolyzed polymaleic anhydride, 18 to 25 parts of glycolic acid, 0.3to 0.7 part of polylactic acid and 0.1 to 0.3 part of sodium metasilicate. According to the invention, the phosphorus-free scale inhibitor has the scale inhibition rate of more than 99.2% so as to reach the national qualified standard, and is not added with a phosphorus-containing raw material, so that treated water does not contain phosphate radicals, and the pollution of the phosphate radicalsto a water body is reduced; and the relative purity of the phosphorus-free scale inhibitor in a preparation process can be improved by the filtering device.

Description

technical field [0001] The invention belongs to the technical field of scale inhibitor preparation, and in particular relates to a preparation method of a phosphorus-free scale inhibitor and a filter device thereof. Background technique [0002] With the continuous development of science and technology, my country's extrusion industry has also developed rapidly in recent years. During the use of industrial equipment, especially some heat exchange equipment and boiler equipment, they will generally be exposed to alkaline water for a long time. This kind of alkaline water runs for a long time in the equipment, and scale will remain on the equipment. If it is not cleaned in time, it will affect the normal operation of heat exchange equipment, boilers and other equipment, shorten the actual service life of the equipment, and even cause serious industrial production. Safety. [0003] The main component of the antiscalant is a weak acid, which has a strong ability to complex and ch...

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a preparation method of a phosphorus-free scale inhibitor and its filter device, which solves the problem of using a large amount of phosphate ions to enrich in water during scale inhibition in the prior art, which will lead to being Eutrophication occurs in the discharged sewage, causing secondary pollution to the environment

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