B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
23/358
B01D 53/34 (2006.01) B01D 53/00 (2006.01) B01D 53/68 (2006.01)
Patent
CA 2030253
PROCESS FOR THE TREATMENT OF HOT WASTE GAS CONTAINING HYDROGEN CHLORIDE ABSTRACT OF THE DISCLOSURE The specification discloses a process for the treatment of waste gas containing hydrogen chloride wherein the gas is at an elevated temperature in the range of from about 300°F to about 3000°F and is produced from the thermal decomposition of material contaminated with hazardous chlo- rinated organic compounds. The waste gas is contacted in a reaction unit with an alkaline brine solution under condi- tions such that hydrogen chloride in the waste gas reacts with the alkali to form a chloride salt and water. The heat of the gas evaporates water from the solution to maintain the salt concentration sufficiently high to cause the forma- tion of salt crystals in the solution. The gas is conducted from the reaction unit following contact with the solution under conditions such that the gas includes water evaporated from the solution. The salt crystals are removed as a solid product of the process and water and alkali are added to compensate for water vaporized from the solution and alkali consumed in the reaction. The process requires no external heat input and there is no liquid discharge.
Mak Kai K.
Novak Rudy G.
Gowling Lafleur Henderson Llp
International Technology Corporation
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