Benzaldehyde
   Describes the production of benzaldehyde by liquid phase chlorination of toluene.
   http://www.faizkaskar.8k.com/proj.htm

Cellulose Conversion Towards Fuel Bioethanol
   Report presented by Brelsford Engineering describing the process.
   http://www.brelsfordenginc.us/sitebuildercontent/sitebuilderfiles/report402.pdf

Processworld
   The site features basic engineering flow sheets and descriptions for a number of chemical processes.
   http://www.processworld-online.com/english/index.html