Hydrocracking Catalyst Development Enters Critical Period

Major projects of China National Petroleum Refinery Catalyst and hydrocracking catalyst development and industrial application projects of the key project of China Petroleum and Petrochemical Research Institute are currently underway. As of October 13, the long-period test for industrial scale catalysts of tonnage has been running smoothly for 1800 hours. The catalyst activity is stable, the product distribution is reasonable, and it has the conditions for industrial application. It will enter the key testing stage and will eventually form independent intellectual property rights. Hydrocracking catalyst package technology.

During the “Twelfth Five-Year Plan” period, the ethylene production capacity of Daqing Petrochemical Company will be expanded from 600,000 tons/year to 1.2 million tons/year, and the selection of suitable catalyst is the key. The petrochemical institute developed the PHC-03 hydrocracking catalyst that produces high quality middle distillates and produces light, heavy naphtha and hydrocracked tail oils. It has successfully carried out small-scale tests, pilot tests, and catalyst-scale industrial amplification. test. On the eve of the National Day, they started a 3-liter pilot plant evaluation test, and the preliminary evaluation results met the requirements of the indicators, which were in agreement with the laboratory test and the pilot test results. The research and development of this project will enable Petrochemical Institute to complete the development of a full range of refinery catalysts during the “Twelfth Five-Year Plan” period to meet the demand for the production of middle distillates from China's oil hydrocracking units, the production of vinyl materials and the reforming of raw materials, and the promotion of China's oil hydrocracking technology. The process of autonomy is of great significance.

Troughing idler, which is the most common idlers used on belt conveyor, is mounted on the carrying side, used for conveying bulk materials. Generally it consists of 3 rollers in equal length. The two outer rollers are inclined upward and the middle one is horizontal. The inclined degree can be 30°,35°and 45°, some can be up to 60° in suspended type. There are two basic types: standard type and ahead inclined type. The latter can also be present all through the conveyor to prevent the belt from sideslip.

A Troughing Idler is comprised of a central idler roll, which has a fixed width, and two or more wing idlers located on each side of the central idler roll. The wing idlers can be adjusted up or down to change the toughing angle, which affects the depth of the trough created by the conveyor belt as it moves.

The troughing idlers comprise a centre idler roll of a defined width, and 'wing' idlers on either side of the centre roll. Unlike the centre, horizontal roll, the wing idlers are cranked up to an angle known as the troughing angle. This troughing angle ensures that the carrying belt maintains the same cross-sectional area throughout the carrying strand, so that the load-bearing capacity of a particular conveyor belt is the same along the conveyors' full length. In so doing, material loaded to the maximum capacity at the loading point will not fall off of the belt en-route.

Troughing idlers usually deep groove ball Bearing For Conveyor Idler roller.

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