High-efficiency nickel-molybdenum catalyst

Abstract

The invention discloses a high-efficiency nickel-molybdenum catalyst which consists of a honeycomb ceramic carrier and a catalytic film. In the invention, the honeycomb ceramic carrier is soaked in a catalytic film solution containing nickel oxide and molybdenum sesquioxide for 5-10 minutes, and then the soaked honeycomb ceramic carrier is roasted at a high temperature of 500-600 DEG C to ensure that a catalytic film consisting of the nickel oxide and the molybdenum sesquioxide is formed on the hole surface of the honeycomb ceramic carrier, wherein the content of the nickel oxide in the catalytic film is 0.5-2 percent of the weight of the high-efficiency nickel-molybdenum catalyst, and the content of the molybdenum sesquioxide is 2-8 percent by weight of the weight of the high-efficiency nickel-molybdenum catalyst. The invention is beneficial to the quickening of the advance removal of sulphur, nitrogen, heavy metals, and the like in crude oil before the oil enters the catalyst bed layer, thereby enhancing the absorption of ammonia, improving the denitration rate and achieving the purpose of deeply denitrifying of the crude oil. Compared with the traditional catalysts, the invention has the advantages of high strength, large specific surface area, difficult aging and hardening, improves the catalytic effect and is beneficial to the improving of the running temperature range of oil refining, the reducing of the oil refining running treatment pressure drop, the enhancing of the oil refining efficiency and the decreasing of the oil refining cost.

Description

technical field [0001] The invention relates to a catalyst, in particular to a high-efficiency nickel-molybdenum catalyst. Background technique [0002] As we all know, catalysts play an extremely important role in the modern chemical industry. Almost half of chemical products use catalysts in the production process to speed up chemical reactions, improve reaction efficiency and obtain products of different qualities. For example, when nitrogen and hydrogen are used to synthesize ammonia, catalysts with iron as the main component are often used. Vanadium pentoxide is often used as a catalyst in the production of sulfuric acid. Platinum catalysts are often used in the purification of motor vehicle exhaust. Different catalysts can be used in oil refining. Gasoline, kerosene, etc. of different qualities. At present, the catalysts used in oil refining mainly include unit catalysts such as platinum catalysts and nickel catalysts. However, as the content of impurities in crude oi...

AI Technical Summary

Problems solved by technology

At present, the catalysts used in oil refining mainly include unit catalysts such as platinum catalysts and nickel catalysts. However, as the content of impurities in crude oil increases, the quality of oil decreases, and the technical difficulty of oil refining increases. The existing catalysts are prone to aging and caking during use. , it is not easy to form a deep denitrification process, which reduces the anti-coking ability of the catalyst and leads to a decrease in the catalytic effect of the catalyst