Method and system for degrading nitrogen-containing/sulfur-containing VOCs by absorption in cooperation with liquid-phase catalysis

Abstract

The invention discloses a method and a system for degrading nitrogen-containing/sulfur-containing VOCs by absorption in cooperation with liquid-phase catalysis. The method comprises the following steps of enabling the nitrogen-containing/sulfur-containing VOCs waste gas to pass through absorption liquid containing an HZSM-5 molecular sieve under ultraviolet light to finish degradation of nitrogen-containing/sulfur-containing VOCs, wherein the molar ratio of silicon to aluminum of the HZSM-5 molecular sieve is (18-360): 1; the pH value of the absorption liquid is 3-8; and the concentration of the HZSM-5 molecular sieve in the absorption liquid is 0.1-5g/L. The system comprises a liquid-phase absorption catalytic device filled with the absorption liquid, a gas inlet pipe with one closed endand the other end allowing nitrogen-containing/sulfur-containing VOCs waste gas to enter is arranged in the liquid-phase absorption catalytic device and close to the bottom, a plurality of aeration pipes with one closed ends are arranged on the two sides of the gas inlet pipe at intervals, and aeration holes are formed in the bottoms of the aeration pipes; and an ultraviolet lamp is arranged abovethe gas inlet pipe in the liquid-phase absorption catalytic device.

Description

technical field [0001] The invention relates to the technical field of environmental catalysis, in particular to a method and system for absorbing and synergizing liquid-phase catalytic degradation of nitrogen-containing / sulfur-containing VOCs. Background technique [0002] In recent years, my country's economy has developed rapidly, the level of industrialization has been continuously improved, and the living standards of residents have been greatly improved, but at the same time, the problem of air pollution has become more and more serious. Among them, nitrogen-containing and sulfur-containing volatile organic compounds (VOCs) discharged in urban public construction such as sewage treatment, garbage transfer and treatment, livestock and poultry breeding, pharmaceutical, chemical and other production processes have caused serious damage to the surrounding environment and human health. Impact. This type of VOCs not only has the characteristics of high toxicity, but also mo...

AI Technical Summary

Problems solved by technology

In addition, in this patent technology, the carrier in the catalyst only plays the role of supporting the active components, and there is no description of any other functions

Moreover, according to the descr

Images