Nitroglycerine batch methods

Batch methods of nitroglycerine manufacture Old process Nobel process... 

Nitroglycerin. NG was manufd in Switzerland by the continuous methods of Schmid-Meissner and of Biazzi, which were preferred to batch processes (See Vol 3, C501-L ff)... 

However the methods being used at present for the manufacture of nitroglycerine, such as batch combined process (Vol. II, p, 95) and all continuous processes (Vol. II, p. 97) require that spent acid be dealt with correctly. Originally primitive arrangements were in use consisting in distillation of nitric acid and careful decomposition of organic products dissolved in the spent acids. 

The Biazzi Process. For many years, the process for preparing nitroglycerine has been carried out in small batch operations, and the procedure has varied only slightly. In recent years, a modem continuous process, developed by Mario Biazzi of Switzerland, has b n gradually replacing the older manufacturing methods. The apparatus (Fig. 12-12) consists of a nitrator, a separator, and three mechanically stirred washers. The entire... 

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