Preparation method of continuous extrusion SCR (Selective Catalytic Reduction) denitration honeycomb catalyst

• Main Authors: SHEN KAI, WANG XINGSI, ZHOU CHANGCHENG, ZHU XIAOQIANG, SONG JING, SHEN YI, XU HAITAO
• Format: Patent
• Language: Chinese; English
• Published: 23.04.2014
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a preparation method of a continuous extrusion SCR (Selective Catalytic Reduction) denitration honeycomb catalyst, and belongs to the field of the catalyst. The method comprises the following steps that raw materials are mixed and then fully and uniformly stirred to obtain a mixed solution; the mixed liquid is piled up in a stale manner after being mixed; then filtered by a pre-extruder and piled up in the stale manner to obtain muds; a wet blank extruded continuously by a mud vacuum extrusion forming machine is cut to obtain the wet blank with an irregular end shape; the wet blank with the irregular end shape is dried and then cut to respectively obtain end wastes and a fixed length dry blank of a regular end surface; the fixed length dry blank of the regular end surface is calcined after being dried to obtain the catalyst; and the end wastes are mixed and recycled after being crushed, pulped and classified. The method generates almost no waste, lowers resource consumption, and reduce