METHOD FOR IMPROVING THE COLLECTING RATE OF NITRIC ACID CAPABLE OF COLLECTING NITROGEN OXIDE GAS FROM A SCRUBBER DEVICE AS NITRIC ACID BY USING OXYGEN AND WATER AS THE OXIDANT OF THE NITROGEN OXIDE GAS UNDER CONSTANT TEMPERATURE AND PRESSURES

摘要

PURPOSE: A method for improving the collecting rate of nitric acid is provided to cost-effectively collect nitric acid without expensive hydrogen peroxide and an SCR facility.;CONSTITUTION: A nitric acid aqueous solution is sprayed into a scrubber device under a pressurized condition. Nitric acid is collected from the scrubber device. In case of the spraying operation, the inner part of the scrubber device is pressurized in a range between 1 and 10 atm. The inner temperature of the scrubber device is kept in a range between 25 and 140 degrees Celsius. The scrubber device is filled with ion exchanging fiber.;COPYRIGHT KIPO 2012