With the increasingly prominent environmental pollution, air quality issues have attracted more and more attention, and the control of industrial flue gas in the non-electrical industry is a tough battle for the current lucid waters and lush mountains. The development of the iron and steel industry supports the backbone of China's modernization, and the iron and steel industry has made important contributions to my country's economic and social development.

  Since 2018, the denitration transformation of sintering machine exhaust gas has been carried out on a large scale across the country. After two years of practice, we have found in some sintering machine denitration, heating furnace denitration or pellet denitration that a large area of denitration catalyst will burst at individual sites, accompanied by sintering and deformation (as shown in the figure below).

  The clues that can be collected after careful on-site investigation are: ①The CO content in the flue gas is more than 5000ppm; ②The material of Q235 is deformed; ③The rust of the reactor is more serious; The specific surface area of the post-denitrification catalyst is reduced from the original 40-50m2/g to below 20m2/g; ⑥ The flue gas temperature rises rapidly for many times; and so on.

 The conclusion of the above phenomenon analysis is that a flash explosion occurred in the denitration reactor, which was caused by the sudden high temperature impact on the denitration catalyst. situation occurs. In response to the current irreversible situation in the iron and steel industry, Yuanchen Technology has developed an explosion-proof denitration catalyst.

 Explosion-proof denitration catalyst is a kind of catalyst that can deal with the sudden situation in the operating flue gas, release a large amount of energy, generate high temperature, and release a large amount of gas in a very short period of time, and can resist strong damage. In addition to the need to reduce sintering and agglomeration of active components, the physical structure of the product is the biggest challenge. Generally, a carrier with a large pore structure, or a hard or extremely flexible carrier is selected.

 Yuanchen Technology has long been guided by customer needs and driven by innovation. According to the characteristics of CO contained in the flue gas of the steel industry, it has actively deployed CO pollution control, resource utilization, deflagration prevention and other technology development. After two years of investment and development, Yuanchen Science and Technology Research Institute has developed a series of explosion-proof products, which can resist the explosion caused by flammable gas deflagration and other emergencies and prolong the mechanical life of the catalyst. Next, we will introduce three explosion-proof catalysts of Yuanchen Technology in series, so stay tuned!