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 protection method for a cobalt molybdenum carbon monoxide sulfur-tolerant shift catalyst, in particular to a preparation method for an anti-poison agent for protecting a cobalt molybdenum carbon monoxide sulfur-resistant shift catalyst. Background technique:

[0002] Since its inception, cobalt-molybdenum sulfur-tolerant shift catalysts have been widely used in the shift section of ammonia plants due to their 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 No3,957,962, U.S.Pat No 4,153,580 and U.S.Pat No 4,166,101 have reported the use of Al 2 o 3 The cobalt-molybdenum sulfur-tolerant shift catalyst as the carrier, the main products at home and abroad are K8-11 of BASF company in Germany, SSK of TOPSΦe company in Denmark, C25-02-1 of UCI company in the United States, and the domestic national brand is Hubei Chemical Research...

Examples

Embodiment 1

[0010] Activated γ-Al 2 o 3 The carrier is co-impregnated with an aqueous solution containing 3% of cobalt acetate, 7% of ammonium molybdate and 3% of ammonia water, 1% of nitric acid is added to the impregnating solution, and the product is obtained after impregnating and drying.

Embodiment 2

[0012] Activated γ-Al 2 o 3 The carrier is co-impregnated with an aqueous solution containing 3% of cobalt acetate, 7% of ammonium molybdate and 3% of ammonia water, 2% of nitric acid is added to the impregnating solution, and the product is obtained after impregnating and drying.

Embodiment 3

[0014] Activated γ-Al 2 o 3 The carrier is co-impregnated with an aqueous solution containing 3% of cobalt acetate, 7% of ammonium molybdate and 3% of ammonia water, and 4% of nitric acid is added to the impregnating liquid, and the product is obtained after impregnating and drying.

Technical field:

[0001] The invention relates to a protection method for a cobalt molybdenum carbon monoxide sulfur-tolerant shift catalyst, in particular to a preparation method for an anti-poison agent for protecting a cobalt molybdenum carbon monoxide sulfur-resistant shift catalyst. Background technique:

[0002] Since its inception, cobalt-molybdenum sulfur-tolerant shift catalysts have been widely used in the shift section of ammonia plants due to their 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 No3,957,962, U.S.Pat No 4,153,580 and U.S.Pat No 4,166,101 have reported the use of Al 2 o 3 The cobalt-molybdenum sulfur-tolerant shift catalyst as the carrier, the main products at home and abroad are K8-11 of BASF company in Germany, SSK of TOPSΦe company in Denmark, C25-02-1 of UCI company in the United States, and the domestic national brand is Hubei Chemical Research...

Examples

Embodiment 1

[0010] Activated γ-Al 2 o 3 The carrier is co-impregnated with an aqueous solution containing 3% of cobalt acetate, 7% of ammonium molybdate and 3% of ammonia water, 1% of nitric acid is added to the impregnating solution, and the product is obtained after impregnating and drying.

Embodiment 2

[0012] Activated γ-Al 2 o 3 The carrier is co-impregnated with an aqueous solution containing 3% of cobalt acetate, 7% of ammonium molybdate and 3% of ammonia water, 2% of nitric acid is added to the impregnating solution, and the product is obtained after impregnating and drying.

Embodiment 3

[0014] Activated γ-Al 2 o 3 The carrier is co-impregnated with an aqueous solution containing 3% of cobalt acetate, 7% of ammonium molybdate and 3% of ammonia water, and 4% of nitric acid is added to the impregnating liquid, and the product is obtained after impregnating and drying.