An adsorption desulfurization reaction device and an adsorption desulfurization method

Abstract

The invention provides an adsorption desulphurization reaction apparatus and an adsorption desulphurization method. The adsorption desulphurization reaction apparatus comprises a fluidized bed reactor, a filter arranged outside the fluidized bed reactor, and a spent-catalyst regeneration unit; a cyclone separator arranged in the fluidized bed reactor possesses at least two material introduction channels, and a ratio of the total area of a cross section of each material introduction channel along a direction perpendicular to the material flow direction to the area of a horizontal cross section of a separation segment of the fluidized bed reactor is 1:3-30. The adsorption desulphurization reaction apparatus is capable of timely transferring out a catalyst fine powder in the fluidized bed reactor, avoiding accumulation of the catalyst fine powder in the fluidized bed reactor and keeping stable long-term operation, thereby obtaining good and stable reaction effect. Also, the cyclone separator employed in the fluidized bed reactor is small in wearing on the catalyst particle, and is capable of obviously reducing consumption of the catalyst, thereby reducing operation cost of the apparatus.

Description

technical field [0001] The invention relates to an adsorption desulfurization reaction device, and also relates to an adsorption desulfurization method. Background technique [0002] With the improvement of people's living standards and the increasing emphasis on environmental protection, countries all over the world have higher and higher standards for clean fuels, and stricter restrictions on sulfur content in fuels. Therefore, researchers at home and abroad have developed various technologies for deep removal of sulfur content in hydrocarbon oil. [0003] The main method of traditional fuel oil desulfurization is hydrodesulfurization, but with the increasingly stringent fuel oil standards and the increase of hydrogenation depth, harsher reaction conditions are required, such as higher reaction pressure. At the same time, for gasoline, since it contains a large amount of olefins, increasing the severity of hydrogenation will lead to a higher loss of octane number, so some...

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Problems solved by technology

However, the general cyclone separator requires the gas velocity entering the cyclone separator to be in the range of 15-25m / s. A high inlet gas velocity is beneficial to improve the gas-solid efficiency, but it will increase the wear of the particles.

However, the mechanical strength of the catalyst used in gasoline adsorption desulfurization is low. If a traditional cyclone separator is installed in the fluidized adsorption reactor, the wear of the catalyst particles will be aggravated due to the high inlet gas velocity, which will greatly increase the operating cost of the device.

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