Low-temperature SCR denitration technology is the future development direction. There is a huge demand for low-temperature SCR denitration catalysts.

Denitrification refers to the technology of removing nitrification. The denitrification process is divided into two types: selective catalytic reduction technology (SCR) and selective non-catalytic reduction (SNCR). Among them, SCR technology is the current mainstream research direction. The implementation temperature of traditional SCR denitration technology is high, usually above 300°C, which is prone to problems such as catalyst poisoning, damage to the device, and low denitration efficiency. Low-temperature SCR denitrification technology is usually performed below 300°C, which solves the problems of traditional technology and is an important direction for the future development of the denitrification field.

In order to improve denitrification efficiency and reduce costs, the application of low-temperature SCR denitrification technology was born. Low-temperature SCR denitrification technology is widely used in thermal power, petroleum, glass, waste incineration, biomass power generation, transportation and other fields. Catalysts are the core of low-temperature SCR denitration technology. With the widespread application of low-temperature SCR denitration technology, the application demand for low-temperature SCR denitration catalysts continues to grow.

Preparation methods for low-temperature SCR denitration catalysts include sol-gel method, ultrasonic impregnation method, co-precipitation method, traditional impregnation method, etc. According to different structural forms, low-temperature SCR denitration catalysts can be divided into honeycomb type, flat type, corrugated type, etc.; according to different carriers, low-temperature SCR denitration catalysts can be divided into vanadium-based (V), manganese-based (Mn), iron-based (Fe) and other metal oxides, etc. In recent years, with the deepening of research and the widespread application of new materials, new low-temperature SCR denitration catalysts have continued to emerge, such as molecular sieve catalysts, carbon-based material catalysts, etc.

According to the “2022-2026 China Low-temperature SCR Denitrification Catalyst Market Feasibility Research Report released by the Industrial Research Center, low-temperature SCR denitrification Catalyst technical barriers are high, and core technologies are mastered by the United States, Japan, Germany and other countries, such as Germany’s KWH, Japan’s Catalyst Chemicals, and the United States’ Corning. In 2021, the market size of my country’s SCR denitration catalysts will be approximately 5.86 billion yuan. my country’s SCR denitration catalysts are mostly concentrated in the high-temperature field, and there are few low-temperature SCR denitration catalyst suppliers, mainly including Anhui Yuanchen Technology, Tongxing Environmental Protection, Anhui Conch New Materials, Jiangxi Xinke Environmental Protection and other enterprises.

Tongxing Environmental Protection is one of the few domestic companies with medium-low temperature SCR denitration technology and ultra-low temperature SCR denitration technology. Among them, the low-temperature SCR denitration catalyst preparation technology has reached the international leading level. Beijing Fangxin Lihua, a subsidiary of Tongxing Environmental Protection Holdings, has independent intellectual property rights for low-temperature SCR denitration catalysts. In 2020, the company’s low-temperature SCR denitration catalyst production line project raised 160 million yuan. In August 2022, the production line began to organize completion acceptance.

Industry analysts said that my country is a major NOx emitter, and against the backdrop of increasingly stringent environmental protection regulations, the demand for SCR denitration will continue to grow. Low-temperature SCR denitration catalysts have the advantages of low activity temperature and long service life. They solve the problems of traditional SCR denitration catalysts and are an important direction for the future development of the denitration field. At present, there are few companies in my country that have mastered low-temperature SCR denitration catalyst preparation technology, and they have no competitive advantage in the high-end field. There is huge room for industry improvement in the future.