Processing device and method for removing fine particulate matter in automobile tail gas by electrostatic spraying

Abstract

The invention discloses a processing device and method for removing fine particulate matter in automobile tail gas by electrostatic spraying. In the device, an annular induction charged electrode is tightly sleeved on the inner wall of the front section of a tail gas connecting pipe, and the inner wall of the back section of the exhaust connecting pipe is fixedly connected with an electrostatic spraying device; the front of a grounding electrode is located at the central axis of the induction charged electrode, and the back of the grounding electrode extends to the central position of the spraying region of the electrostatic spraying device; and a first electrostatic high pressure generator is connected with the induction charged electrode, a second electrostatic high pressure generator is connected with the electrostatic spraying device, an induction high pressure charging electric field is formed between the induction charged electrode and the grounding electrode, and an electrostatic field is formed in the spraying region between the electrostatic spraying device and the grounding electrode. In the method, the tail gas firstly passes through the induction high pressure charging electric field and is charged with static electricity, and then is subjected to the opposite electric charge in the spraying region, and then fog drips adsorb fine particulate matters and are exhausted by evaporation and settlement. According to the invention, the water consumption is less and a great amount of accumulated water and sewage cannot be generated, so that the fine particulate matters, especially the fine particulate matters with the particle size below 2.5 mu m, in the automobile tail gas, can be effectively removed.

Description

technical field [0001] The invention belongs to the field of flue gas treatment and purification, in particular to a treatment device and method for removing fine particles in automobile tail gas. Background technique [0002] At present, inhalable particulate matter is the primary pollutant in the urban air environment, and inhalable particulate matter is the aerodynamic particle size less than 10 Particulate matter (referred to as PM 10 ), can float in the atmosphere for a long time and is easily inhaled by the human body into the respiratory tract, seriously affecting human health. And the particle size is The following fine particulate matter (referred to as PM 2.5 ) will directly enter the bronchi and alveoli after being inhaled into the human body, so it is also called inhalable pulmonary particulate matter, which can cause diseases including asthma, bronchitis and cardiovascular disease. Medical research shows that the smaller the particles, the greater the harm...

AI Technical Summary

Problems solved by technology

The Chinese patent number is 00100824.2, the name is "automobile exhaust gas treatment method and device", which uses water spray and exhaust gas to mix and then sprays and washes the automobile exhaust gas. These two patented technologies remove particulate matter by wet method, and their common defects are: the device is large in size, complex in structure, low in removal efficiency, large in water consumption, and has secondary The problem of secondary polluted water treatment

At present, there is no research on the fine particles in automobile exhaust, especially the particle size The following literature reports on the treatment of fine particulate matter

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