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发明公开
CN107501082A 一种醋酸钠晶体颗粒做大的方法 审中-实审

一种醋酸钠晶体颗粒做大的方法
摘要：
本发明涉及一种醋酸钠晶体颗粒做大的方法，它包括以下方法步骤：1)、将在110温度下，且波美度为28的醋酸钠溶液进行缓慢降温，待醋酸钠溶液刚进入介稳区时的温度为达到饱和状态时的温度点；2)、向饱和的醋酸钠溶液中加入醋酸钠晶种，其计算公式为：Ms＝(Ls/La)3Ma，公式中Ms代表晶种的质量，Ls代表晶种的粒度，La代表目标晶体的粒度，Ma代表目标晶体的质量；3)、在上步中加入醋酸钠晶种后继续降温，然后溶液继续降温过程中，即可得到颗粒较大的醋酸钠晶体颗粒。本发明可以很好的增大醋酸钠结晶颗粒，而且在结晶过程中，溶液温度不会回升，这样就不会增加结晶时间，提高结晶效率。
摘要（英）：

The invention relates to a method for enlarging sodium acetate crystal particles. The method comprises the following steps: (1) slowly cooling a sodium acetate solution with a Baume degree of 28 at a temperature of 110 DEG C, wherein the temperature of the sodium acetate solution just entering a metastable region is a temperature point of a saturation condition; (2) adding sodium acetate seed crystal into the saturated sodium acetate solution, wherein calculation formula is Ms=(Ls/La)3Ma, Ms represents the mass of the seed crystal, Ls represents the particle size of the seed crystal, La represents the particle size of a target crystal, and Ma represents the mass of the target crystal; and (3) after the sodium acetate seed crystal is added in the step (2), continuing to cool so as to obtain relatively big sodium acetate crystal particles during the continuous cooling of the solution. According to the method, the sodium acetate crystal particles can be well enlarged, and the temperature of the solution does not rise again in the crystallization process, so that the crystallization time is not prolonged, and the crystallization efficiency is improved.

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