Anti-blocking method for acid gas pipeline of vacuum potassium carbonate desulfurization system

• Main Authors: DUAN JIANGLONG, LIANG YONGFEI, LEE SU-JIN, SUN CHENXI, LIANG WENLEI, QIAO XINGKE, LI MENGYANG, DUAN YUANMENG, ZHANG FAN, HAN RUIJUN, ZHANG QINGJIAN, LI KE, ZHU JIANYE
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2024
• Subjects: AMMONIA; CHEMISTRY; CLEANING; CLEANING IN GENERAL; COMPOUNDS THEREOF; CYANOGEN; INORGANIC CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PREVENTION OF FOULING IN GENERAL; TRANSPORTING

The invention relates to the technical field of coal chemical industry, in particular to an anti-blocking method for an acid gas pipeline of a vacuum potassium carbonate desulfurization system, which comprises the following steps: 1, introducing steam into the acid gas pipeline to control the temperature in the acid gas pipeline to be more than or equal to 50 DEG C; 2, washing an acid gas pipeline by using a desulfurization pregnant solution; and 3, discharging the steam and the desulfurized pregnant solution from an acid gas pipeline, separating from the acid gas, and feeding into an ammonia distillation unit to produce stronger ammonia water. Steam is introduced into the acid gas pipeline to heat the interior of the acid gas pipeline, so that oily components cannot be condensed and separated out, and the oily components are prevented from blocking the acid gas pipeline after being condensed; the acid gas pipeline is flushed by using the desulfurization pregnant solution, so that the acid gas pipeline is pre