Shanghai Marine Diesel Engine Research Institute

Basf Corporation

Basf Mobile Emissions Catalysts LLC

Teng Shen

Xiaobo Li

Qiuyan Chen

Xiangli Zhu

Stefan Maurer

Yi Lu

Jia Di Zhang

Yu Dai

Yu Hao

Zhenhua Wang

Lili Shi

Yuanyuan Huang

Mingsai Du

Wenjie Kong

Zhigang Wang

Ming Ming Wei

Feixiang Shen

Mingshan Guo

Zhipeng Hou

Xizhao Zhang

Yu Fen Hao

A high-pressure SCR system with venting and pressure-stabilizing for marine diesel engine, comprising an SCR reactor, a gas intake pipeline, an exhaust pipeline, a bypass pipeline, a pneumatic pipeline, first and second auxiliary pipelines When denitrification treatment is needed, the exhaust gas can enter from a flue gas inlet, sequentially pass through the gas intake pipeline, the SCR reactor, and the exhaust pipeline, and be discharged from a flue gas outlet. When denitrification treatment is not needed, the exhaust gas can enter the bypass pipeline from the flue gas inlet and be discharged from the flue gas outlet, the exhaust gas in the SCR reactor and exhaust pipeline being pushed by compressed air entering from the first and second auxiliary pipelines to be discharged from the flue gas outlet. Also provided is a ship.

High-pressure SCR system with venting and pressure-stabilizing for marine diesel engine and ship having the same

A reaction device of a marine SCR system comprises a conveying unit (), a reaction chamber (), at least one catalyst module (), and an air homogenization chamber (), wherein, the conveying unit () includes an input pipeline () and an output pipeline () sleeved outside the input pipeline (). One end of the reaction chamber () is connected to the conveying unit (). The reaction chamber () comprises an inner cylinder () and an outer cylinder () sleeved outside the inner cylinder (), the inner cylinder () is in communication with the input pipeline (), and the outer cylinder () is in communication with the output pipeline (). The catalyst module () is provided between the inner cylinder () and the outer cylinder (). The air homogenization chamber () is connected to the other end of the reaction chamber () and is in communication with both the inner cylinder () and the outer cylinder (). With the reaction device of the marine SCR system whereby the outer cylinder is sleeved outside the inner cylinder, flue gas from the inner cylinder is turned by the air homogenization chamber and then flows back into the outer cylinder. This can not only substantially reduce the size of the reaction device to improve the integration of the SCR system, but also allow the flue gas to turn in the air homogenization chamber and then flow back, so that the flue gas and a reducing agent can be fully mixed in the air homogenization chamber to improve the catalytic reaction efficiency.

Reaction device of marine SCR system

The present invention relates generally to the field of exhaust treatment systems for purifying exhaust gas discharged from a lean burn engine. The exhaust treatment system comprises a Diesel Oxidation Catalyst (DOC), a Catalyzed Soot Filter (CSF), a reductant injector, an AEI zeolite based Selective Catalyzed Reduction (SCR) catalyst and an Ammonia Oxidation Catalyst (AMOX) downstream to the AEI zeolite based SCR catalyst.

Exhaust treatment system for a lean burn engine

A diesel engine high pressure SCR ventilation and voltage stabilisation system, comprising an SCR reactor (), an air intake pipeline () and an exhaust pipeline () respectively connected to an air inlet and an exhaust outlet of the SCR reactor, a pressure difference sensing apparatus (), and a control apparatus, a first control valve () being arranged on the air intake pipeline () and a second control valve () being arranged on the exhaust pipeline (), and the control apparatus being connected to the pressure difference sensing apparatus (), the first control valve (), and the second control valve (). The control apparatus controls the first and second control valves such that the pressure difference between the SCR reactor and the exhaust side of the diesel engine remains in a predetermined pressure difference range. The present system implements rapid ventilation and ensures precise control and stabilisation of pressure difference.

Diesel engine high pressure SCR ventilation and pressure stabilization system

Growing community of inventors

Shanghai, China

Teng Shen