Preparing method of counterpoison for protecting Co-Mo Co of anti-sulfur change catalyst

Abstract

The present invention relates to preparation process of counterpoison for protecting Co-Mo catalyst for the sulfur resisting conversion of CO. The preparation process includes soaking the active carrier gamma-Al2O3 in the immersion liquid with ammonium molybdate in 7+/-0.1 wt%, soluble cobalt salt in 1.2+/-0.1 % accounting in CoO, redox matter in 1-15 wt%, and ammonia water in 1-5 wt%, and stoving after soaking. The counterpoison can protect the activity of Co-Mo catalyst for the sulfur resisting conversion of CO to ensure the normal operation of the catalyst.

Description

Technical field: [0001] The invention relates to a method for protecting a cobalt-molybdenum carbon monoxide sulfur-tolerant shift catalyst, in particular to a method for preparing an antitoxic agent for protecting the cobalt-molybdenum carbon monoxide sulfur-tolerant shift catalyst. Background technique: [0002] Since its introduction, the cobalt-molybdenum sulfur-tolerant shift catalyst has been widely used in the shift section of synthetic ammonia plants due to its good activity, wide operating temperature range, strong sulfur resistance, and high cost performance. In recent years, U.S. Pat No 3,850,840, U.S. Pat No 3,957,962, U.S. Pat No 4,153,580 and U.S. Pat No 4,166,101 have reported that Al 2 O 3 The cobalt-molybdenum sulfur-tolerant shift catalyst is a carrier. At present, the main products at home and abroad are K8-11 from BASF in Germany, SSK from TOPSΦe in Denmark, C 25-02-1 from UCI in the United States, and the domestic national brand is Hubei Institute of Chemistr...

AI Technical Summary

Problems solved by technology

However, either the anti-toxicity is low, the dosage is large, or the price is high, all of which restrict the application and promotion of this advanced technology