Equipment and method for purifying parecoxib sodium

The invention provides equipment and a method for purifying parecoxib sodium. The equipment structurally comprises a main reaction kettle, an auxiliary reaction kettle, a crystallization kettle, a high-pressure nitrogen tank, a liquid distributor, a filter, a liquid storage tank, a first pipeline, a second pipeline and a third pipeline, wherein the bottom of the main reaction kettle is connected with the liquid distributor through the first pipeline, the bottom of the auxiliary reaction kettle is connected with the liquid distributor through the second pipeline, and the filter is arranged at the bottom of the crystallization kettle and connected with the liquid distributor through the third pipeline; the high-pressure nitrogen tank is simultaneously connected with the top of the main reaction kettle and the top of the auxiliary reaction kettle through gas conveying pipelines, and the bottom of the liquid distributor is connected with the liquid storage tank through a liquid conveying pipeline. On the basis of