Hydrogen peroxide is a green chemical product. Its production and use process is almost pollution-free, so it is called a "clean" chemical product, and the application prospect is very promising. At first, hydrogen peroxide was only used in the pharmaceutical and military industries, and later it was gradually used in chemical synthesis, textile, paper, environmental protection, food and agriculture, as well as the purification of organic waste gas VOCs in paint, enameled wire, coating, oven and other industries. Market demand is expanding day by day. 

     In 2000, Kaida, Shaanxi Province began to study the palladium catalyst for the production of hydrogen peroxide by anthraquinone method and its preparation method, which solved the related problems and technical defects in the technology, including the balance of catalyst activity and sampling, the low strength of catalyst support, easy demulsification and crushing, and the problems of catalyst service life and regeneration cycle. The final palladium catalyst for the production of hydrogen peroxide by anthraquinone method has a very balanced surface area, pore volume and pore distribution matching, and ensures that the overall particle compressive strength of the catalyst is greatly improved, the wear value is greatly reduced, and the catalyst is not easy to demulsify and crumble, which greatly prolongs the service life and regeneration cycle. 

     Shaanxi Kaida uses active alumina as a catalyst carrier. The spherical alumina is added asymmetrically during the molding process by means of a reaming agent. The surface surface distribution of the spherical alumina carrier obtained by molding is asymmetrical along the radial direction of the support. It not only ensures the requirements of macropores and low specific surface area on the surface of the catalyst carrier, but also achieves the characteristics of high compressive strength in the catalysis as a whole. The main active ingredient of the catalyst is all-metal palladium. During the catalytic process, by adjusting the type and amount of the active component positioning agent sprayed on the carrier before, the dipping effect of the active component with controllable depth can be achieved.

During the research and development process, the company optimized the preparation of the carrier, the impregnation depth of the active component, and the control of the metal dispersion, so that the prepared pore size nonlinear distribution catalyst exhibited good activity and selectivity in industrial applications, overcoming various shortcomings of the prior art. 

     Before this, the high price of palladium catalyst is the main reason for the application of hydrogen peroxide in the field of environmental protection, palladium catalyst products have high technical content, high entry threshold, high industry monopoly characteristics, I can develop the project of success, so that the book company through the JV project (coal oil project abbreviation) implementation and trial of Shaanxi Kaida company's palladium catalyst products, not only to improve product output, but also has produced high-quality and cheap hydrogen peroxide products, thus effectively breaking the anthraquinone method for the production of hydrogen peroxide with palladium catalyst industry monopoly, greatly reducing production costs, but also more to promote other enterprises to produce hydrogen peroxide, contributed to the environmental protection of our country.

The palladium alumina catalyst for hydrogen peroxide is a key research and development product of our company. By optimizing the preparation of the carrier, the impregnation depth of the active component, and the metal dispersion, it exhibits good activity, selectivity, and service life in industrial applications, reducing the cost of use and improving production capacity.

In Sinopec Group's system, under the condition of normal addition of anthraquinone in the device, the total amount of effective anthraquinone in the system from 2012 to 2016 was stable at more than 120g/L, about 70g/L of 2-ethylanthraquinone, and about 50g/L of tetrahydroanthraquinone; after the improvement of the system working fluid from 2017 to 2018, the total amount of effective anthraquinone was stable at more than 140g/L, 2-ethylanthraquinone was stable at more than 70g/L, and the capacity was nearly 5.0kgH2O2/kgCat.d; the actual use effect and life cycle have far exceeded the expected technical indicators.