Device and method for reducing emission of tail gas

Abstract

The invention discloses a device and a method for reducing the emission of tail gas. The provided device for reducing the emission of tail gas comprises a compression device and an alga photoreactionabsorption device, wherein one end of the compression device is connected with a three-way catalytic converter, and the other end is connected with the alga photoreaction absorption device and used for receiving and compressing tail gas generated by the catalytic reaction by the three-way catalytic converter and uniformly leading the compressed tail gas into the alga photoreaction absorption device; and the alga photoreaction absorption device is used for absorbing carbon dioxide in the tail gas output by the compression device by utilizing the photosynthetic reaction of microalgae. The device for reducing the emission of tail gas is green and environment-friendly, and does not generate corrosive chemical substances during reaction, and is applied to all locomotives with emission of carbon dioxide, and has wide application range. The invention effectively reduces the emission of carbon dioxide under the condition of global gradually warming, and has favorable environment-friendly benefits and economic benefits.

Description

technical field [0001] The invention relates to the field of biological environmental protection engineering, in particular to a tail gas emission reduction device and a tail gas emission reduction method. Background technique [0002] The main pollutants of vehicle exhaust include carbon monoxide, hydrocarbons, nitrogen oxides and carbon dioxide. Existing control vehicle exhaust mainly contains the following several ways: [0003] 1) Improve fuel quality, increase fuel octane number to increase anti-knock ability, etc. [0004] 2) Improve the combustion process and adopt internal purification technology to prevent harmful emissions. [0005] 3) Off-machine post-processing technology, such as three-way catalytic technology, non-equilibrium plasma treatment technology, nanotechnology and other high-tech technologies. [0006] 4) Improve engine technology. [0007] 5) Use clean energy, such as electric energy, liquefied petroleum gas, compressed natural gas, hydrogen and a...

AI Technical Summary

Problems solved by technology

This kind of scheme can be carried out under normal temperature without any additional any catalytic treatment, but has the following disadvantages: 1) Na 2 o 2 easy with h 2 O and CO in the air 2 The reaction occurs, which unnecessarily consumes part of the Na in the absorber to a certain extent 2 o 2 dose, lowers the CO 2 The absorption efficiency, and Na 2 o 2 with H 2 The NaOH produced by the O reaction is corrosive; 2) The exhaust gas temperature of the gasoline engine is as high as 700°C to 1000°C, while the NaOH 2 o 2 The melting point of is about 675°C, and it hardly decomposes when it is in a molten state, so for a gasoline engine, the exhaust temperature is too high for a reason for the partial failure of the absorber (ie, thermal deactivation); 3) due to Na 2 o 2 The reagent is loaded into the absorber at one time, and as the main body of the reaction, it is always being consumed, and a certain amount of by-product Na is produced at the same time. 2 CO 3 trapped in the absorber, so CO 2 Absorber replacement intervals may be shorter

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