Waste gas pollutant combined removal device for two-stroke diesel engine

A technology for combined removal of diesel engines, applied in the field of combined removal of NOx and Sox devices, can solve the problems of reducing the volume and cost of emission reduction devices, large impact on normal operation of the engine, high equipment investment and operating costs, and achieving economic performance and emissions. The effect of performance improvement, guaranteed power, and temperature reduction

Active Publication Date: 2014-10-29
HARBIN ENG UNIV
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AI Technical Summary

Problems solved by technology

This exhaust gas series treatment method has huge equipment volume and high back pressure, which has a great impact on the normal operation of the engine, and the equipment investment and operation costs are very high.
[0007] So far, there is no integrated treatment device for NOx and SOx emitted by marine t

Method used

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  • Waste gas pollutant combined removal device for two-stroke diesel engine

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Embodiment Construction

[0023] The present invention will be described in more detail below with examples in conjunction with the accompanying drawings.

[0024] combine figure 1 , the main part of the combined exhaust gas pollutant removal device for two-stroke diesel engine of the present invention includes an exhaust gas scrubbing device A and a recirculation exhaust gas flow control device B. Exhaust gas scrubbing device A includes scrubber 4, washing liquid storage tank 9, circulation pump 10, SOx absorbent supply device 11 and fresh water supply device 12; recirculation exhaust gas flow control device B includes flow regulating valve 5, recirculation fan 6 And one-way control valve 7.

[0025] a. The exhaust gas discharged from the two-stroke diesel engine 1 enters the exhaust pipeline after the turbine 2 does work, and enters the exhaust gas scrubber A through the three-way valve 3, and is washed and desulfurized in the scrubber 4 to remove SOx and most of the exhaust gas. Particles, the exh...

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Abstract

The invention provides a waste gas pollutant combined removal device for a two-stroke diesel engine. The waste gas pollutant combined removal device comprises a waste gas washing device and a recirculation waste gas flow control device, the waste gas washing device comprises a washer, a washing solution storage box, a circulation pump, a SOx absorbing agent supply device and a fresh waste supply device, and the recirculation waste gas flow control device comprises a flow regulating valve, a recirculating draught fan and a one-way control valve. According to the waste gas pollutant combined removal device, waste gas of the two-stroke diesel engine is washed, the SOx content and the particle content in the waste gas are reduced, part of low-temperature clean waste gas is recirculated, the NOx generation amount of the engine is reduced, and combined desulfurization and denitration of waste gas pollutants of the ship diesel engine is achieved. According to the waste gas pollutant combined removal device, part of washed waste gas is recirculated, the combustion condition in a cylinder is improved to a large extent,by CO2 and vapor contained in the low-temperature clean waste gas and the NOx generation amount and the final discharge amount of the engine are reduced.

Description

technical field [0001] The invention relates to a ship exhaust pollutant emission control device, in particular to a combined NOx and Sox removal device for a ship two-stroke diesel engine meeting the International Maritime Organization (IMO) ship exhaust pollutant emission regulations. Background technique [0002] In order to reduce ship operating costs, commercial ships use high-sulfur heavy oil, and the NOx and SOx produced by engine combustion cause serious harm to the marine atmosphere and port environment. [0003] IMO has imposed strict restrictions on NOx and SOx emissions from ship engine exhaust. [0004] At present, commonly used NOx emission reduction measures mainly include in-machine emission reduction measures and out-of-machine emission reduction measures. The internal emission reduction measures are through certain methods, such as delaying fuel injection in the cylinder, improving the fuel injection law, reducing the intake air temperature, increasing the...

Claims

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Application Information

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IPC IPC(8): F01N3/04F01N3/08F02M25/07F02M26/06
CPCY02T10/12
Inventor 周松刘佃涛杨军王占广朱元清张贺付
Owner HARBIN ENG UNIV
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