Scrubbing desulfurization system for exhaust gas of marine diesel engine on basis of open seawater method

Abstract

The invention provides a scrubbing desulfurization system for exhaust gas of a marine diesel engine on the basis of an open seawater method. The scrubbing desulfurization system for the exhaust gas ofthe marine diesel engine is characterized by comprising a scrubbing solution supply module, a scrubbing tower module, a sealing anti-backflow module, a water quality monitoring module and an exhaustgas continuous monitoring module. The scrubbing desulfurization system has the following beneficial effects: sweater is adopted as a scrubbing absorbing liquid, is convenient to obtain, can be extracted directly from sea when sailing in high seas and can be used directly after being filtered, and the scrubbing solution is discharged into the seas after single cycle. Alkali liquor is taken from theseawater, the alkali liquor is not consumed as compared with a closed system, and the cost is saved.

Description

technical field [0001] The invention relates to environmental protection equipment, in particular to an exhaust gas washing and desulfurization system for marine diesel engines based on the open seawater method. Background technique [0002] The marine diesel engine exhaust scrubbing and desulfurization system based on the open seawater method is one of the mainstream technologies for treating sulfur oxides SOx in the exhaust gas of marine diesel engines. Using this technology can reduce the 3.5% fuel sulfur content in the fuel to less than 0.5%. As the deadline for the implementation of strict fuel oil sulfur content standards by IMO, the European Union, the United States and other countries and international organizations is approaching, the world's major marine engine manufacturers and ship emission reduction equipment manufacturers have carried out the research and development of exhaust gas washing and desulfurization equipment, with a view to In the case of meeting the...

AI Technical Summary

Problems solved by technology

However, the exhaust gas desulfurization system of marine diesel engines has the characteristics of large diesel engine power coverage, frequent changes in working conditions, limited hull space, and strict requirements for wastewater discharge. Gas desulfurization spray system

[0005] At present, domestic diesel engine exhaust scrubbing and desulfurization systems are still under research and development, and relevant technical information cannot be obtained from public information.

[0006] Based on the fact that seawater is easy to obtain local materials on board, it is particularly important to use seawater as washing liquid to obtain local materials during long-distance voyages. However, there is no equipment in the existing technology to use seawater for exhaust gas treatment and desulfurization to meet emission standards.

Images