Production of Liquid Sulfur Dioxide Without Compression or Refrigeration

2 Production of Liquid Sulfur Dioxide Without Compression or Refrigeration 

The cold process for manufacturing sulfuric acid is, in turn, based on the cold process for sulfur dioxide. The cold process for sulfur dioxide is described in detail in the Appendix in a paper entitled Ashar NG (1999) Liquid sulfur dioxide without compression or refrigeration presented by one of the authors in Calgary (Canada) (1999) at a conference organized by British Sulphur. 

Ashar eind K.R. Golwalkar, A Practical Guide to the Manufacture of Sulfuric Acid, Oleums, and Sulfonating Agents,TX)l 10.1007/978-3-319-02042-6 ll, 

11 Cold Process of Manufacturing Sulfuric Acid and Sulfonating Agents... 

In short, liquid sulfur is reacted with liquid sulfur trioxide in a pressure vessel fed stoichiometrically by metering pumps. The reaction is 

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