Design and analysis of horizontal crystallizer for agro-chemical industries

Abstract

Crystallization is a process in which hot solution is allowed to cool in a shell to form crystals at the end of the process. Crystallization is predominantly used in chemical industries. In most of the industries vertical crystallizer are used for continuous crystallization. The proposed project is horizontal crystallizer used for batch crystallization. In this project we have tried to solve problem wherein blades were subjected to impact load and produced a greater number of vibrations in the crystallizer, due to which blades were failing at the location where blades were connected to the shaft end because of more stresses. Also, the blades will be subjected to elevated temperature for some period. To solve this problem some research about various types of agitators is available. Designing of two types of blades those are single helical blades and double helical blades has been done. These blades will be suitable for mixing viscous solution and these blades works on the principle of shearing the solution and pushing it. These blades will produce fewer vibrations as compared to pedal blades used in the industries. Static structural analysis and Steady State Thermal Analysis on blades as well as on Shell has been done. The Stresses and deformation pattern are produced within safety limits. After performing the Design and Analysis of Shell and Blades, a model which has a capacity of 440 Litres has been fabricated and the results are interpreted. The fabricated crystallizer is implemented in the chemical industry which is providing better crystals as compared with the already in use crystallizer.