Device and method for achieving photo-assisted electrochemical catalytic oxidation of oil fumes

Abstract

The invention discloses a device and method for achieving photo-assisted electrochemical catalytic oxidation of oil fumes. The device comprises a spray tower shell and an electrolyte circulating system; a fume inlet is formed in the bottom of the spray tower shell, a fume outlet is formed in the top of the spray tower shell, and an ultraviolet lamp and a quartz tube are fixed in the spray tower shell; the electrolyte circulating system comprises an electrolysis reactor, a circulating pump, a material supplementary box and a plurality of spray heads, the electrolysis reactor comprises a positive electrode plate and a negative electrode plate, and a power supply system is connected to the electrolysis reactor and supplies power to the electrolysis reactor; the spray heads are arranged on the top inside the spray tower shell and connected with the electrolysis reactor through a pipeline; the circulating pump is arranged on the pipeline for connecting the electrolysis reactor with the spray heads; the material supplementary box is provided with a feed port and used for supplementing a raw material sodium chloride, and an outlet of the material supplementary box is connected with a pipeline for connecting the electrolysis reactor and the circulating pump. The device has the advantages of being simple in structure, cheap in raw material, low in energy consumption, long in material replacement cycle, free of pollution to the environment and the like.

Description

technical field [0001] The invention belongs to the research field of advanced oxidation method catalytic oxidation of cooking fume, and relates to a light-assisted electrochemical catalytic oxidation purification method and device for cooking fume in small, medium and large commercial restaurants. Background technique [0002] The instantaneous PM2.5 emission mass concentration of restaurants with different Chinese cooking systems during the business period is as high as 11mg / m 3 , the number concentration emission factor is 10 12 -10 14 # / min, after being purified by the oil fume purification equipment on the market, the emission concentration is still 100-600ug / m 3 . At present, the national catering industry emission standard (GB18483-2001) only stipulates the maximum emission concentration of large, medium and small restaurants and the removal efficiency of oil fume purification equipment, but does not stipulate the quantity concentration of emitted particulate matte...

AI Technical Summary

Problems solved by technology

However, due to the low catalytic efficiency of photocatalysis, the catalyst is prone to poisoning and failure under complex pollutant conditions, while the electrochemical oxidation technology is called an environmentally friendly treatment technology because it does not need to add redox agents and has strong controllability of reaction conditions. , but the combination of photocatalysis and electrochemistry in the past is based on electric assisted photocatalysis, this combination weakens the electrochemical oxidation ability, and the single use of electric field reduces the electron-hole recombination rate of photocatalysis

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