A Simulated Ship Exhaust Gas System for Wet Scrubbing

Abstract

The invention discloses a simulated ship waste gas system for wet washing. The system comprises a gas distributing and mixing subsystem, a temperature control subsystem, a wet washing subsystem and a flue gas analyzing subsystem, wherein the output end of the gas distributing and mixing subsystem is connected with the temperature control subsystem, the output end of the temperature control subsystem is respectively connected with the wet washing subsystem and the flue gas analyzing subsystem, and simulated flue gas is connected with the flue gas analyzing subsystem through a back pressure regulating valve after being processed by the wet washing reaction. The system has the benefits that the simulated ship waste gas system which is used for researching a wet washing technology under the man-made controlled condition in a laboratory is provided, the air pressure in the system is constant, and the flow output is stable. The precision of the harmful components in the simulated ship waste gas is high, the processing effect for the wet washing can be evaluated in a quantitative manner, and the reliability and the repeatability of the evaluated results are good. The amount of the required flue gas for the test is small, the testing time is short, and the testing cost is low.

Description

technical field [0001] The invention belongs to the technical field of experimental detection devices, in particular to a simulated ship exhaust gas system for wet washing. Background technique [0002] With the continuous expansion of international maritime trade, the total amount of harmful gases emitted by ships is increasing, and the air pollution caused by them is also becoming more and more serious. Therefore, in recent years, the International Maritime Organization (IMO) has amended the MARPOL Convention to formulate stricter emission regulations for sulfur oxides and nitrogen oxides in ship exhaust gas. [0003] In order to effectively cope with the Tier III emission standards for ship exhaust gas that will be implemented soon, the research on ship exhaust emission control technology has become a current research hotspot. Among the many desulfurization and denitrification emission control technologies, the post-treatment technology based on wet scrubbing is better a...

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Problems solved by technology

[0004] In the prior art, research on wet scrubbing of ship exhaust gas under laboratory conditions is mostly carried out by direct collection of exhaust emissions from actual ship power plants. The existing problems are: due to the complexity of the exhaust gas components of actual ship power plants, the concentration of each component It is unstable with the change of working conditions, and the exhaust gas temperature is high, the environmental factors change more, the repeatability of the experimental process is poor, the reliability is low, the exhaust gas flow consumption is large, and the test cost is high

Patent No. CN201220067290.8 "A System for Testing the Performance of SCR Denitrification Catalysts" and Patent No. CN201110185724.4 "Flue Gas Conversion System and Its Simulation Method in the Flue of Coal-fired Boilers" discloses the use of A flue gas mixing system for simulating the smoke exhaust conditions of coal-fired power plants, but this system can only be used to evaluate the gas-solid reaction process, and the applicable object is only the flue gas simulation of coal-fired power plants or boilers; the patent number is CN201010596776.6 "One A performance test method and test device for SCR flue gas denitration catalyst" and the patent "Evaluation System for Engine Exhaust Gas Catalytic Purifier Activity" with patent number CN200710057638.9, which discloses a system for simulating engine exhaust and evaluating exhaust gas treatment devices, However, these systems have problems such as system pressure fluctuations in the exhaust gas post-treatment process and unstable back pressure of the flowmeter, so they cannot accurately measure and evaluate the exhaust gas treatment effect, and the systems disclosed in the above patents are not designed for ship power devices, and ship exhaust gas is not considered. Simulation Differences

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