Diesel engine tail gas particulate matter water film adsorption purification device and method

Abstract

The invention discloses a diesel engine tail gas particulate matter water film adsorption purification device and method. According to the device, a water tank is fixedly connected to an opening in the upper end of a box body, a gas outlet pipeline and a gas inlet pipeline are fixedly connected to the middle of a left side plate and the middle of a right side plate of the box body, and a liquid drainage pipeline is fixedly connected to the bottom of the box body; an adsorption unit is arranged in the box body and consists of a plurality of adsorption mechanisms which are arranged side by side; each adsorption mechanism is composed of three corrugated plates arranged side by side, the three corrugated plates form two corrugated containing grooves, and a plurality of water seepage holes are formed in plate bodies of the two corrugated plates located on the two sides; and corrugated communicating holes are formed in the portions, corresponding to the corrugated containing grooves, of a water tank bottom plate. The method is characterized in that a curved-surface-shaped water film formed on the surfaces of the adsorption mechanisms collides with flowing tail gas for multiple times, so that solid particles in the tail gas are adsorbed by the water film in the collision process and sink to the bottom of the box body under the action of self weight. According to the device and the method, particulate matters in the waste gas can be effectively captured, and the influence of the waste gas on the environment can be effectively reduced.

Description

technical field [0001] The invention belongs to the technical field of purification and treatment equipment for diesel exhaust particulate matter, and in particular relates to a water film adsorption and purification device and method for diesel exhaust particulate matter. Background technique [0002] The content of carbon monoxide and hydrocarbons in the exhaust gas of diesel engines is less, but the content of solid particles is more, which is mainly caused by incomplete combustion of fuel oil. Due to the incomplete combustion of fuel oil, thick black smoke is produced, which contains a large number of solid particles. Solid particles, especially those with small particle size, are the main factors causing environmental pollution and air quality decline, which not only bring serious pollution to the environment, but also bring great harm to life. [0003] Because a large number of exhaust particles are discharged into the atmosphere in the form of "black smoke", the part...

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Problems solved by technology

[0005] In the process of DPF filtering exhaust particles, due to the relatively small pores of the filter screen, it is easy to generate exhaust resistance during the exhaust process

At the same time, with the continuous accumulation of working time, before DPF regeneration, the captured particles will block some holes, which will cause the gradual increase of exhaust resistance.

Due to the filtration of particles by DPF, some pores are blocked and the capture efficiency is reduced, so it needs to be regenerated to restore the capture efficiency

For the independent technology of diesel engines, it is not perfect to achieve real-time autonomous regeneration in the regeneration of DPF

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