Desulfurization and purification method and equipment for unpowered sintering machine by using two-step method

• Main Authors: REN GUIPING, BIAN HONGJUN, HE XIAOGANG, HE HAIPING, XING JIAJIA, GAO WENAN, DU JUNWEI, LI JIULIN, ZHANG HUANHUAN
• Format: Patent
• Language: Chinese; English
• Published: 03.08.2011
• Subjects: PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; TRANSPORTING

The invention relates to desulfurization and purification method and equipment for an unpowered sintering machine by using a two-step method. The rear part of an induced draft fan of the sintering machine is provided with a desulfurization reaction tower which is divided into a water-washing dedusting zone and a desulfurization reaction zone. The purification treatment comprises the following steps: firstly, dust particulates in flue gas are removed in the water-washing dedusting zone, and then the flue gas enters into the desulfurization reaction zone through a bubble cap flue gas ascension pipe; and secondly, sulfur dioxide in the flue gas closely contacts a desulfurizer solution sprayed from top to bottom in the desulfurization reaction zone to react, and the flue gas is discharged into air after the sulfur dioxide is removed. The desulfurization reaction tower with low resistance can work by using the induced draft fan of the original sintering machine without an additional relay air blower to achieve the