ABSTRACT
Methane is a one-carbon paraffinic hydrocarbon that is not very reactive under normal conditions. Chlorination of methane is only possible by thermal or photochemical initiation. Methane can be partially oxidized with a limited amount of oxygen or in presence of steam to a synthesis gas mixture. Due to the environmentally hazardous and highly toxic nature of sodium cyanide solution, as well as potential sources of free cyanide at leaching operations, the process requires ultimate care in addressing to the issues of environmental safety and health. Carbon dioxide removal systems can be made environmentally acceptable by properly specifying the instrumentation, water wash of the overhead vapors, efficient use of demisters, routine control of the solvent physical properties and chemical composition, and care in startup and emergency shutdown situations. In the United States, the first environmental regulation affecting the quality of air came with the Federal Air Pollution Control Act of 1955, then with the Clean Air Act of 1963.
