Scarring and treatment in the process of refining brine by ammonia-alkali method
Thread Content
In the brine refining process, impurity ions such as calcium ions and magnesium ions are precipitated through chemical reactions to produce insoluble substances with very low solubility, and are removed through sedimentation separation. In different parts of the production process, due to changes in impurity ion concentration and temperature effects, multi-phase precipitation reaction scars and complex salt scars will occur on the pipes and equipment walls through which the solution flows, causing equipment blockage, reduced equipment production capacity, shortened operating cycles, etc. How to prevent and eliminate scarring?
Preventive and treatment measures: 1. Reasonably adjust the process to reduce the chance of scarring. ； 2. There should be sufficient reaction residence time in the reaction zone ； 3. When conditions permit, try to use raw materials with low impurity content to reduce the content of calcium, magnesium, sulfate and other ions entering the system. ； 4. Add seed crystals to shorten reaction time and reduce scarring ； 5. In areas with severe scarring, use easy-to-clean equipment such as open troughs. ； 6. Purposely add appropriate additives to areas that are easy to clean to produce a precipitation reaction and reduce the content of calcium, magnesium, sulfate and other ions entering the system. ； 7. Use equipment and pipelines with smooth surface walls to reduce the adhesion of scars, such as using nylon tubes and other materials ； 8. Reduce the exposed parts, keep them warm, and try to reduce the double salt scarring caused by temperature changes. ； 9. Clean equipment and pipelines regularly using pickling, high-pressure cleaning and other methods.
study* Yes, but it would be better if it could be prevented.
:handshake* Got it
What process does the poster use for brine refining? Should he consider membrane refining? :)