Scale inhibition and dispersion agent used for sea water desalination

Abstract

The invention provides a scale inhibition and dispersion agent used for sea water desalination. The scale inhibition and dispersion agent has the advantages of being low in cost, good in thermal stability, good in scale inhibition effect and the like. The scale inhibition and dispersion agent is prepared from the following components in percentage by weight: 5%-9% of poly-carboxylic acid compounds, 25%-60% of poly-sulfonic acid compounds and water. Preferably, the scale inhibition and dispersion agent further comprises 0-25% of organic phosphine compounds.

Description

technical field [0001] The invention relates to a scale-inhibiting dispersant, in particular to a scale-inhibiting dispersant for seawater desalination. Background technique [0002] Water is a basic natural resource necessary for life, and it is an irreplaceable important resource. The total amount of water resources on the earth is about 1.38 billion cubic kilometers, 97.5% of which are seawater, and fresh water only accounts for 2.5%. The total freshwater resources in my country are about 2.8 trillion cubic meters, accounting for 6% of global water resources. , second only to Brazil, Russia and Canada, ranking fourth in the world. my country is a country with severe drought and water shortage. The per capita water resources are only about 2100 cubic meters, which is only 1 / 4 of the world average level. It is one of the countries with the poorest per capita water resources in the world. Therefore, vigorously developing and utilizing seawater resources and developing seawa...

AI Technical Summary

Problems solved by technology

The application number is 201410025127.9, and the invention patent application titled "low-temperature multi-effect seawater desalination scale and corrosion inhibitor" discloses a scale and corrosion inhibitor with 15% to 35% organic phosphine, 20% to 40% Polyaminopolyether-based methylene phosphonic acid, 25% to 50% of copolymers containing sulfonic acid groups and 5% to 25% of corrosion inhibitors are mainly used. Among organic phosphines, HEDP is also preferred, and there are also chloride ion concentrations. Adverse effects of elevated

At present, the few reports do not mention the temperature resistance of the antiscalant and dispersant, that is, the thermal stability of the agent

Images