Modified activated charcoal for fuel desulfuration and preparation method and device thereof

Abstract

The invention discloses a modified active carbon of fuel oil desulfurization and preparing method and device, which comprises the following steps: putting the U type pipe incorporating activated char of preliminary treatment into microwave reactor; leading into nitrogen; operating microwave reactor; cooling active carbon to room temperature; leading into nitrogen; placing quartz pipe with gas inlet and outlet into microwave reactor (4); connecting gas inlet side of quartz pipe (5) and gas flow controller (3); putting adsorbent active carbon (6) in the quartz (5). The surface of the preparing active carbon includes phenolic hydroxyl group, carboxyl acid group and inner ester group, wherein the density of carboxyl acid group can reach 0.0011mmol / g-0.0634mmol / g.

Description

technical field [0001] The invention relates to the preparation of sulfide adsorption materials in oil products, in particular to a preparation method and device for modified activated carbon used for desulfurization of fuel oil. Background technique [0002] With the acceleration of the modernization of human society, the number of vehicles and ships using various motor vehicles has also increased rapidly. In 2005, the number of cars in the world was 650 million, of which the number of cars in my country was 25 million, and by 2010 it will reach 4000. million vehicles. It is estimated that the number of cars in the world will reach 1 billion in 2025, and that in my country will exceed 100 million. Extensive use of automobiles not only consumes one-half of the world's oil consumption, but also emits a large amount of SO2 to the environment. 2 exhaust gas. According to statistics, tens of millions of tons of SO2 are discharged into the air every year due to the combustion o...

AI Technical Summary

Problems solved by technology

The traditional hydrodesulfurization technology can remove most of the sulfides in fuel oil. The disadvantage is that hydrodesulfurization needs to be carried out under high temperature and high pressure, which not only consumes a large amount of hydrogen but also greatly loses the octane number. In addition, for thiophene sulfur compounds, especially polycyclic organosulfurs, are difficult to remove in depth due to their steric hindrance

[0004] In 2003, Yang and his research team from the University of Michigan published an article in Science (R.T.Yang, A.J.Herna'ndez-Maldonado, F.H.Yang, Science 301 (2003), 79), reporting the development of a series of Molecular sieves loaded with different metal ions are used for deep desulfurization of fuel oil. At present, the existing problems are: the adsorption capacity of molecular sieve adsorbents is still not high enough. Deep removal of DMDBT-like organic sulfur still fails to meet the requirements of large-scale commercial production

In addition, in order to avoid the Cu(I)-Y type molecular sieve being converted to Cu(II)-Y type and reduce the efficiency, the regeneration and activation of Cu(I)-Y must be carried out under the condition of no humidity and oxygen, which makes the whole desulfurization process becomes complicated

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