Production device of discharged treatment liquid of movable type diesel engine

Abstract

The invention provides a production device of discharged treatment liquid of a movable type diesel engine, comprising a high-purity water preparation device and a storage groove, a urea feeding device, a neutralizing device and a purifying device, wherein the production device is modularly arranged in a vehicle-mounted L-shaped box body; the urea feeding device, the neutralizing device and the purifying device are connected in sequence from top to bottom and are arranged inside a vertical structure of the L-shaped box body; the high-purity water preparation device and the storage groove are arranged in a horizontal structure; the storage groove is provided with a high-purity water conveying pipeline which is connected to the top of the neutralizing device; and a conveying pipeline of a finished product of the discharged treatment liquid of the movable type diesel engine is arranged at the tail end of the purifying device. The production device disclosed by the invention is movably andmodularly arranged and can be conveyed to any place with requirements to be produced, and has a strong market exploiting capability; the production device has the advantages of simple use method, saved investment, fewer operation staff and easiness for management; the production process does not need an output heat source, no three wastes are generated and the utilization rate of urea raw materials is 100%; and the cost is low and the market competitiveness is strong.

Description

technical field [0001] The invention relates to a mobile production device for removing tail gas treatment liquid discharged from diesel engines. Background technique [0002] At present, my country's urban air pollution is mainly manifested as nitrogen oxides and PM2.5, while diesel vehicle exhaust and flue gas from power plants and industrial kilns are the main sources of the above-mentioned pollutant emissions. Selective catalytic reduction (SCR) technology is used to remove them. Nitrogen oxides in automobile exhaust and flue gas are the first choice at home and abroad. This technology uses urea solution with a concentration of 31.8-33.2% as a nitrogen oxide reducing agent, and under the action of a catalyst, the nitrogen oxides in the exhaust gas are reduced to nitrogen and water. Because the tail gas treatment process is carried out under the action of a catalyst, the catalyst has very high requirements on the purity of the reducing agent, especially on the content of ...

AI Technical Summary

Problems solved by technology

The former is to dissolve and recrystallize granular urea, and then mix it with pure water. This technology will produce a large amount of urea-containing wastewater, which is not only costly, but also has a large amount of wastewater; the latter is to mix pure water with granular urea first. Then the solution is purified by ion exchange resin. Although there is no disadvantage of recrystallization, due to the use of ion exchange resin, the resin will fail after a period of production, and the failure node cannot be accurately judged, resulting in unstable product quality. Regeneration still produces waste water containing urea

The above technologies require heating in the production process, the utilization rate of urea is not high, the energy consumption is large, and it is not environmentally friendly, and the production device is built in a fixed place, the product transportation cost is high, the radiation radius is limited, and the market competitiveness is not strong.

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