Device and method for treating VOCs

Abstract

The invention relates to a device and a method for treating VOCs (volatile organic compounds), and the method comprises the following steps: pressurizing VOCs gas, feeding the VOCs gas into a catalytic cracking riser reactor, and feeding the gas obtained by reaction into a separation and purification system of a catalytic cracking device along with catalytic cracking reaction oil gas. According to the present invention, an existing catalytic cracking unit riser reactor in a refinery plant and a product separation and purification system thereof are adopted, the reaction recovery method is adopted, the VOCs gas is simply and efficiently recovered and utilized, a VOCs gas treatment device does not need to be additionally arranged, and the disadvantages of high investment, heat waste, serious secondary pollution and the like of a traditional combustion method are avoided; and according to the method, sulfur, nitrogen and other impurities in the VOCs gas can be effectively removed, and meanwhile, the pre-lifting steam consumption of a riser reactor of a catalytic cracking device can be reduced, so that the cooling water consumption of a fractionating tower in the oil gas fractionation process and the amount of sulfur-containing ammonia sewage discharged by the device are reduced, and the energy consumption and the operation cost of the device are reduced.

Description

technical field [0001] The present disclosure relates to the field of VOCs processing in the petrochemical industry, in particular, to a device and method for processing VOCs. Background technique [0002] Since the Stockholm Human Environment Conference in 1972, people have paid more and more attention to environmental issues, and the environment and environmental protection have become an important topic of contemporary scientific research. [0003] With the rapid development of industry and the acceleration of urbanization, the world's air quality has generally been seriously threatened. In the whole system of air pollutants, in addition to particulate pollutants such as smoke, dust, fog, and total suspended particles, gaseous pollutants account for an important part, accounting for more than 75% of the world's annual pollutants discharged into the atmosphere, of which the number is relatively large The order is CO, SO 2 , NOx and hydrocarbon gaseous. Pollutants are di...

AI Technical Summary

Problems solved by technology

The composition of VOCs is complex, and its special odor can cause various discomforts to the human body, and has toxic, stimulating, and carcinogenic effects. Especially benzene, toluene, and formaldehyde will cause great harm to human health.

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