Scale inhibitor for salt manufacture and application thereof

Abstract

The invention discloses a scale inhibitor for salt manufacture, which is prepared from the following components in percentage by weight: 25 to 30 percent of crylic acid-acrylate-sodium allylsulfonate multiple copolymer, 40 to 50 percent of polyaspartic acid, 10 to 15 percent of sodium gluconate, and 5 to 10 percent of water. The scale inhibitor for salt manufacture, disclosed by the invention, issuitable for the salt and Glauber salt co-production industry, as well as sugar manufacture and monosodium glutamate manufacture industries, can prevent a heat exchange tube in a pre-heater and a heat chamber from scaling, and guarantees the scale inhibitor with heat transfer effect for salt manufacture.

Description

technical field [0001] The invention relates to the field of scale inhibitors and dispersants, in particular to a salt-making scale inhibitor and its application. Background technique [0002] The raw materials for making salt from brine mainly come from seawater and underground brine. Most of the salt making processes use brine purification to remove calcium and magnesium ions in the original brine, but it is impossible to completely remove them. Some calcium and magnesium ions still remain in the purified brine, and the purified brine is alkaline. In the subsequent evaporation process, with the continuous evaporation and concentration of brine, the concentration of calcium and magnesium ions in the brine is also increasing, and scale deposits are easily formed in the evaporation tank and heating chamber, which directly leads to a decrease in heat transfer rate and an increase in process energy consumption , The production cycle is shortened. In the prior art, the way of ...

AI Technical Summary

Problems solved by technology

In the subsequent evaporation process, with the continuous evaporation and concentration of brine, the concentration of calcium and magnesium ions in the brine is also increasing, and scale deposits are easily formed in the evaporation tank and heating chamber, which directly leads to a decrease in heat transfer rate and an increase in process energy consumption , the production cycle is shortened

In the prior art, the way of adding acid to adjust the PH of brine is generally used to prevent device fouling, but this method is quite serious to the corrosion of equipment, and the phenomenon of device fouling is still very obvious