Recently, China Petroleum announced the news that after the initial 168 hours of continuous and stable operation in the 1.6 million tons of the FCC flue gas denitration unit, the self-developed catalytic cracking (FCC) flue gas SCR denitrification catalyst -- PDN-102 of the Research Institute of Petrochemical has driven success at one time. The successful test marked the PetroChina has completely owned a set of FCC flue gas denitrification technology with independent intellectual property rights. It is reported that by processing with SCR denitration apparatus containing this kind of denitration catalyst, nitrogen oxides dropped from 180 ~ 350mg / mg/m³ to 50 mg / mg/m³, escape of ammonia is less than 1.5mL, various technical indicators have reached the leading China domestic level. Furthermore, after adjusting the catalyst formulation and production process, it can also be used for dry gas boiler, process furnace, coal-fired boiler and other flue gas denitrification, with good environmental and economic benefits.

 

SCR (selective catalytic reduction) because of its excellent denitration effect, stable performance, is widely used in flue gas denitration, in which the denitration catalyst is the core technology. Currently denitration catalyst widely used mainly is vanadium-based catalyst, which takes vanadium pentoxide as the main active ingredient, titanium dioxide as a carrier, tungsten trioxide (and / or molybdenum trioxide) as a catalyst promoter. Wherein tungsten trioxide due to its unique properties plays the roles of anti-sulfide, anti-sintering of carrier ect. in the catalyst. In addition, tungsten trioxide has the properties of photochromic, gas sensitive, photocatalytic and so on, and has an important position in architectural glass, toxic gas detection, photocatalyst and other industries.

 

In the past, Japan, the United States and other countries monopolized the SCR denitration catalyst production technology, China denitration catalyst is mainly outsourcing, which not only makes the high cost of procurement, but also has to pay technological packages using fee. Therefore, the development of independent intellectual property rights of FCC flue gas denitration catalyst is very urgent. This time, Chinese homegrown catalytic cracking (FCC) flue gas SCR denitrification catalyst -- PDN-102 continued to run smoothly up to 7 days, which not only gave China great encouragement of independently developed passion, but also added some contribution for China changing towards to creative country.