A kind of compound deicing agent and preparation method thereof

Abstract

The invention discloses a composite snow melting agent and a preparation method thereof. The weight composition of composite snow melting agent is as follows: 78-93 parts of composite salt, 12-23 parts of a corrosion inhibitor and 2-4 parts of a plant nutrition agent, wherein the composite salt is obtained by extracting reverse osmosis concentrated brine. The preparation method of the composite snow melting agent comprises the following steps: (1) concentrating the reverse osmosis concentrated brine to a state close to saturation; (2) carrying out spray drying on concentrated brine which is obtained in the step (1) by concentration to obtain the composite salt; and (3) adding the corrosion inhibitor and the plant nutrient agent into the composite salt. According to the invention, high-efficiency economic resource utilization of the reverse osmosis concentrated brine is realized, and the composite snow melting agent can quickly and effectively melt ice and snow, so that the corrosion ofcommon snow melting agents on road surfaces and surface metals is greatly reduced, and the pollution to the greening vegetation environment is greatly reduced. The production process is simple and feasible and has the advantages of turning waste into wealth, protecting the environmental and saving energy.

Description

technical field [0001] The invention belongs to the technical field of snow-melting agents, and in particular relates to a composite snow-melting agent and a preparation method thereof. Background technique [0002] With the continuous growth of my country's population and the rapid advancement of industrialization, environmental problems such as water pollution caused by rapid economic growth have become increasingly serious. The needs of people's life and industrial production put forward higher requirements for water pollution control and water resource protection. Reverse osmosis (RO, reverse osmosis), as a relatively mature deep water treatment technology at present, is widely used in seawater desalination, industrial and mining enterprise water reuse, sewage depth processing and other fields. Since the breakthrough of reverse osmosis technology in the 1960s, it has been widely used in the desalination industry, which has largely alleviated the shortage of fresh water...

AI Technical Summary

Problems solved by technology

[0005] In the cold north of my country and many high-latitude and high-altitude areas in the world, there is often a lot of snow in winter. When there is a continuous low temperature, the snow is difficult to melt, and even the ice and snow are consolidated. It is very difficult to remove and cause traffic jams.

In the past, salt was used for snow removal on roads (including expressways) in some big cities. In recent years, more common snow melting agents have been developed. It cannot completely solve the problem of ice and snow melting; it will corrode metals such as steel bars and steel fibers on the concrete road surface and the surface; it will pollute the road surface and green vegetation around the road surface

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