Fixed anti-leakage device for catalyst in SCR reaction device

Abstract

The invention provides a fixed anti-leakage device for a catalyst in an SCR reaction device. The fixed anti-leakage device comprises an SCR reaction device shell, and further comprises fixing plates,tongue-like plates, adjusting rods and positioning sleeve pipes; and the adjusting rods are fixedly arranged on the tongue-like plates, and each adjusting rod is provided with one corresponding adjusting nut; the positioning sleeve pipes are fixedly arranged on the outer side wall of the SCR reaction device shell, and the adjusting rods can pass through the positioning sleeve pipes and the SCR reaction device shell; and the outer side wall of each fixing plate attaches to the outer side wall of one corresponding tongue-like plate. According to the fixed anti-leakage device provided by the invention, the adjusting nuts are adjusted to push the adjusting rods to drive the tongue-like plates to move, at the same time, the outer side wall of a first tongue-like plate always attaches to the outer side wall of a first fixing plate, so that a movable gap required for catalyst installation and maintenance replacement in the SCR reaction device can be directly adjusted, and smoke leakage causedby manufacture errors and installation clearances of the catalyst and the SCR reaction device shell can be effectively prevented.

Description

technical field [0001] The invention relates to a fixing device. [0002] Specifically, it relates to a catalyst fixing leakage prevention device inside an SCR reaction device. Background technique [0003] As the international maritime community gradually tightens the control of ship exhaust gas, the supervision of relevant departments in various countries is gradually deepening. In recent years, in order to implement the "Pearl River Delta, Yangtze River Delta, and Bohai Rim (Beijing-Tianjin-Hebei) Waters Vessel Emission Control Area Implementation Plan", relevant Chinese maritime departments are also conducting fuel oil nitrogen oxide emission inspections on ships berthing in their jurisdictions as required . Due to its high power, low energy consumption, good economic performance, and low CO2 emissions, diesel engines have become the main power source for automobiles and ships, and have played an increasingly important role. But at the same time, the air pollution cau...

AI Technical Summary

Problems solved by technology

For diesel vehicles, the Euro VI standard stipulates that the NOx emission of heavy-duty diesel engines is only 6.25% of the Euro I emission regulations, and the EPA2010 regulation reduces the NOx emission level to 0.27g / kwh, becoming the most stringent requirement in the world. Emission regulations; for marine diesel engines, IMO's TierIII standard has long been proposed, and its NOx emission requirements for marine diesel engines have increased by 75-80% above the TierII standard. in smooth implementation

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