Efficient and anticorrosive tail gas purification method and efficient and anticorrosive tail gas purification system with temperature-regulating and conditioning functions

• Main Authors: YE LIYING, WANG YUNQING
• Format: Patent
• Language: English
• Published: 15.07.2015
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention discloses an efficient and anticorrosive tail gas purification method and an efficient and anticorrosive tail gas purification system with temperature-regulating and conditioning functions. The method comprises the steps of cooling part of tail gas, mixing the cooled tail gas with the not-cooled tail gas and performing dust removal in a dust removal device. The system comprises a cooling and conditioning section, a mixing section, a dust removal and purification section and a bypass air channel. According to the method, the cooled tail gas and the not-cooled tail gas are mixed, the corrosive gas is effectively prevented from coagulation, and the corrosion of the coagulated corrosive gas to the system is alleviated; both cooling and low temperature corrosion are considered and the temperature of the tail gas after cooling can be effectively controlled by controlling the flow rate and temperature of a cooling medium and/or the humidification amount; the temperature of the tail gas after mixing can be effectively controlled by changing the flow rate of the flue gas entering a branch.