Equipment and method for microwave-assisted treatment of non-methane hydrocarbon

Abstract

The invention relates to the field of non-methane hydrocarbon treatment, and discloses equipment and method for microwave-assisted treatment of non-methane hydrocarbon. The method comprises the following steps: heating a catalyst for catalyzing oxidation of non-methane hydrocarbon to a reaction temperature by adopting microwaves; and treating to-be-treated gas containing non-methane hydrocarbon by adopting the catalyst to make the non-methane hydrocarbon in the to-be-treated gas to oxidation reaction under the catalytic action of the catalyst and converted into water vapor and carbon dioxide. The catalyst is directly heated by adopting microwaves, so that the heating efficiency and the heating uniformity of the catalyst can be effectively improved, the energy consumption is reduced, and the heating time is shortened,and meanwhile, to-be-treated gas can enter a reaction in a normal-temperature state, so that the reaction safety is improved; by utilizing the non-thermal effect of microwaves and the catalyst, rapid transfer of oxygen atoms can be realized, the activity of the catalyst is remarkably improved, and the catalytic oxidation reaction speed of non-methane total hydrocarbon is increased; and high-efficiency conversion of non-methane hydrocarbons can be realized at a relatively low temperature.

Description

technical field [0001] The invention relates to the technical field of non-methane total hydrocarbon treatment, in particular to a microwave-assisted treatment of non-methane total hydrocarbon equipment and method. Background technique [0002] Non-methane total hydrocarbons (NMHC) refers to the general term for all volatile hydrocarbons (mainly C2-C8) except methane. When NMHC in the atmosphere exceeds a certain concentration, in addition to being directly harmful to human health, it can also produce photochemical smog when exposed to sunlight under certain conditions, which is harmful to the environment and human beings. Therefore, in petroleum, chemical and other industries that easily contain NMHC in waste gas, NMHC needs to be treated to meet the emission requirements of waste gas. [0003] At present, there are adsorption recovery method and destructive incineration method for the treatment of NMHC. The adsorption recovery method is suitable for treating waste gas wit...

AI Technical Summary

Problems solved by technology

Due to the need for two heat exchanges, this process has the disadvantages of low heating efficiency, high energy consumption, and long heating time, and because the catalyst is heated by exhaust gas, the flow rate, concentration, composition, etc. of exhaust gas have a great influence on the temperature field of the catalyst. It is easy to cause problems such as uneven heating of the catalyst, high energy consumption, low reaction efficiency, and poor safety.

Images