Spherical circulation type dual-channel high-pressure SCR reactor for marine high-power diesel engine

Abstract

The invention relates to the technical field of marine diesel engine emission control, in particular to a spherical circulation type dual-channel high-pressure SCR reactor for a marine high-power diesel engine. The spherical circular current type dual-channel high-pressure SCR reactor comprises an internal passage, an external passage, an internal reaction system, an internal circulation system and a tail end soot blower system. The internal passage and the external passage are in a tube shape, the internal passage is installed in the center of the external passage, the internal reaction system is located in the passages, the internal circulation system is located at the joint of the internal passage and the external passage, and the tail end soot blower system is arranged on a spherical circulation plate of the internal circulation system. The spherical circulation type dual-channel high-pressure SCR reactor for the marine high-power diesel engine can reduce the size of the SCR reactor, improves the compactness, increases the sectional area of a denitration catalyst, realizes high efficiency denitration in a small size SCR reactor by utilizing the residual energy of turbine exhaust, can be periodically purged to reduce the sediment on the surface of the denitration catalyst and in the passages, and guarantees the safety of the turbine operation. In general, the energy cycle efficiency of the spherical circular current type dual-channel high-pressure SCR reactor for the marine high-power diesel engine is high in energy cycle utilization rate, the overall denitration efficiency is high, and the safety performance is good.

Description

technical field [0001] The invention relates to the technical field of marine diesel engine emission control, in particular to a spherical circulation double-channel high-pressure SCR reactor for a marine high-power diesel engine. Background technique [0002] Due to the serious harm caused by the exhaust gas of ship power equipment to the ocean atmosphere and port environment, the pollution of ship exhaust gas has attracted widespread attention from the international community. In order to reduce the pollution of ship exhaust to the ambient air, countries and international organizations around the world have successively formulated different ship emission regulations, and plan to enforce stricter sulfur oxides (SOx), nitrogen oxides ( NOx) emission standards. At the same time, the Ministry of Transport of my country has also set up the Pearl River Delta, the Yangtze River Delta, and the Bohai Rim (Beijing-Tianjin-Hebei) waters as ships to set up ship air pollutant emission...

AI Technical Summary

Problems solved by technology

However, under the requirement of higher efficiency and environmental protection for low-speed diesel engines, both low-pressure SCR systems and high-pressure SCR systems are faced with the problems of high installation costs and low operating efficiency, which has become a bottleneck that low-speed diesel engine SCR systems must break through

[0004] The patent application number is 201611101052.3, a high-efficiency SCR denitrification reactor, its structure is relatively simple, the residual energy of the exhaust gas cannot be effectively utilized, the cycle energy efficiency utilization rate is not high, and due to the structural design of the vertical flue, it is easily affected by Influence of Dust Content

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