Denitration catalyst

Abstract

A denitration catalyst. A producing process of the denitration catalyst successively includes following steps: (1) manufacturing a catalyst base material with ceramic glass fibers; (2) soaking the catalyst base material manufactured in the step (1) in a mixture solution; (3) drying the soaked catalyst base material; (4) performing a calcining process. The catalyst base material in the step (1) is manufactured through a calendar having gears. The mixture solution includes following components on the basis of the total mass of the mixture solution, by mass, 20-30% of SiO2, 10-20% of glass fibers, 10-20% of V2O5, 5-10% of WO3 and 20-30% of TiO2. The catalyst is large in a specific surface area and is high in strength. On the premise of ensuring denitration effect, the catalyst is more excellent than a conventional honeycomb catalyst in anti-corrosion performance, anti-flue gas impact performance and the like.

Description

technical field [0001] The invention relates to a denitration catalyst, in particular to a selective catalytic reduction catalyst. Background technique [0002] The installed capacity, power generation and coal consumption of my country's thermal power industry are all on the rise, and the resulting nitrogen oxides (NO x ) have increasingly serious impacts on the environment. According to different catalyst carriers, the catalysts currently on the market for stationary source tail gas denitrification are mainly honeycomb catalysts. The catalyst has low pressure drop, wear resistance and excellent denitrification activity and has been widely used, but the existing honeycomb catalyst has some shortcomings, and its optimum working temperature is generally 300-450 °C. In actual working conditions, it is difficult for the flue gas temperature to reach this temperature range. In order to obtain a better denitrification effect, another heating source is required, which increases ...

AI Technical Summary

Problems solved by technology

The catalyst has low pressure drop, wear resistance and excellent denitrification activity and has been widely used, but the existing honeycomb catalyst has some shortcomings, and its optimum working temperature is generally 300-450 °C. In actual working conditions, it is difficult for the flue gas temperature to reach this temperature range. In order to obtain a better denitrification effect, another heating source is required, which increases the cost; on the other hand, in order to achieve better denitrification effect and anti-sulfur and water resistance , the honeycomb denitration catalyst generally has a high pore density, but the large amount of water, sulfur dioxide and dust contained in the actual flue gas can easily cause the catalyst to be blocked, which greatly increases the energy consumption of the power system