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CN-224228745-U - Exhaust treatment device for marine diesel engine

CN224228745UCN 224228745 UCN224228745 UCN 224228745UCN-224228745-U

Abstract

The utility model belongs to the technical field of waste gas treatment, in particular to a waste gas treatment device for a marine diesel engine, wherein a silicon carbide filter core is arranged in a waste gas inlet and is used for filtering particles in waste gas, the output end of the waste gas inlet is connected with the lower end pipeline of the outer wall of a nitrogen oxide treatment mechanism, a pipeline at the top axle center of the nitrogen oxide treatment mechanism is connected with a liquid storage tank, an electromagnetic valve is arranged at the bottom axle center of the liquid storage tank and between the top axle center of the nitrogen oxide treatment mechanism and the output end of the nitrogen oxide treatment mechanism is connected with the input end pipeline of a desulfurization mechanism.

Inventors

  • HUANG JINSONG
  • HUANG YALIN

Assignees

  • 重庆泽之易科技发展有限公司

Dates

Publication Date
20260512
Application Date
20250917

Claims (6)

  1. 1. The exhaust gas treatment device for the marine diesel engine comprises an exhaust gas inlet (1), a nitrogen oxide treatment mechanism (2) and a desulfurization mechanism (5), and is characterized in that a silicon carbide filter core (11) is arranged in the exhaust gas inlet (1), the silicon carbide filter core (11) is used for filtering particles in exhaust gas, the output end of the exhaust gas inlet (1) is connected with the lower end pipeline of the outer wall of the nitrogen oxide treatment mechanism (2), a liquid storage tank (3) is connected with the pipeline at the top axle center of the nitrogen oxide treatment mechanism (2), a solenoid valve (31) is arranged at the bottom axle center of the liquid storage tank (3) and between the top axle centers of the nitrogen oxide treatment mechanism (2), and the output end of the nitrogen oxide treatment mechanism (2) is connected with the pipeline at the input end of the desulfurization mechanism (5); The nitrogen oxide treatment mechanism (2) comprises a shell (21), a spray pipe (24) is arranged at the axis of the shell (21), and a spiral pipeline (22) is arranged on the inner wall of the shell (21) and positioned on the outer wall of the spray pipe (24); the desulfurization mechanism (5) comprises a tank body (51), a spray pipe (54) is arranged at the inner axis of the tank body (51), a water inlet pipeline (53) is arranged at the extending position of the input end of the spray pipe (54), and the spray pipe (54) is in a cross shape.
  2. 2. The exhaust gas treatment device for a marine diesel engine according to claim 1, wherein a plurality of first atomizing nozzles (23) are arranged in the spiral pipeline (22) and on the outer wall of the spray pipe (24), and the input end of the spiral pipeline (22) is connected with the output end of the exhaust gas inlet (1) through a pipeline.
  3. 3. The exhaust gas treatment device for a marine diesel engine according to claim 1, wherein the spray pipe (54) is provided with an atomization nozzle II (55) at the bottom, and a defogging baffle plate (56) is arranged inside the tank body (51) and at the top of the spray pipe (54).
  4. 4. The exhaust gas treatment device for the marine diesel engine according to claim 2, wherein the output end pipeline of the spiral pipeline (22) is connected with an air outlet (25), and the output end of the liquid storage tank (3) is connected with the input end pipeline of the spray pipe (24).
  5. 5. The exhaust gas treatment device for a marine diesel engine according to claim 3, wherein a filler layer (57) is provided inside the tank (51) at the bottom of the shower pipe (54), and a wastewater tank (58) is provided at the bottom of the filler layer (57) at the bottom of the inner wall of the tank (51).
  6. 6. The exhaust gas treatment device for the marine diesel engine according to claim 1, wherein the upper end of the outer wall of the nitrogen oxide treatment mechanism (2) is provided with an air outlet (25), an output end pipeline of the air outlet (25) is connected with a communication pipeline (4), an output end pipeline of the communication pipeline (4) is connected with an air inlet (52), the output end of the air inlet (52) is connected with the lower end pipeline of the outer wall of the desulfurization mechanism (5), an air outlet (59) is fixedly connected at the top axle center of the desulfurization mechanism (5), and the air inlet (52) is arranged at the lower part of a packing layer (57) and is positioned at the upper part of a wastewater tank (58).

Description

Exhaust treatment device for marine diesel engine Technical Field The utility model belongs to the technical field of waste gas treatment, and particularly relates to a waste gas treatment device for a marine diesel engine. Background The marine diesel engine exhaust gas is one of main atmospheric pollutant sources generated in the marine operation process, has complex components and large emission, not only has remarkable influence on marine ecological environment and atmospheric quality, but also is strictly regulated and controlled by International Maritime Organization (IMO) and environmental protection regulations of various countries, the marine diesel engine uses heavy oil (such as marine residue fuel oil HFO) and light diesel oil (MGO) as main fuels, and the exhaust gas components generated after combustion can be divided into harmful pollutants and conventional gases, wherein the main pollutants include sulfur oxides, nitrogen oxides and particulate matters. In the conventional exhaust gas treatment device for a marine diesel engine, mainly, a device for reducing emission of harmful substances such as sulfur oxides (SOx), nitrogen oxides (NOx), and Particulate Matters (PM) is required to be added to a heating device for the treatment of nitrogen oxides, and the particulate matters affect the treatment efficiency of nitrogen oxides during the treatment. Disclosure of utility model In order to overcome the defects in the prior art and solve at least one technical problem in the background art, the utility model provides an exhaust gas treatment device for a marine diesel engine. The technical scheme includes that the exhaust gas treatment device for the marine diesel engine comprises an exhaust gas inlet, a nitrogen oxide treatment mechanism and a desulfurization mechanism, wherein a silicon carbide filter element is arranged in the exhaust gas inlet and is used for filtering particles in exhaust gas, the output end of the exhaust gas inlet is connected with the lower end pipeline of the outer wall of the nitrogen oxide treatment mechanism, a pipeline at the top axis of the nitrogen oxide treatment mechanism is connected with a liquid storage tank, an electromagnetic valve is arranged at the bottom axis of the liquid storage tank and between the top axes of the nitrogen oxide treatment mechanism, and the output end of the nitrogen oxide treatment mechanism is connected with the input end pipeline of the desulfurization mechanism; the nitrogen oxide treatment mechanism comprises a shell, a spray pipe is arranged at the axis of the shell, and a spiral pipeline is arranged on the inner wall of the shell and positioned on the outer wall of the spray pipe; The desulfurization mechanism comprises a tank body, a spray pipe is arranged at the axis of the interior of the tank body, a water inlet pipeline is arranged at the extension of the input end of the spray pipe, and the spray pipe is cross-shaped. Preferably, a plurality of first atomizing nozzles are arranged in the spiral pipeline and positioned on the outer wall of the spray pipe, and the input end of the spiral pipeline is connected with the output end pipeline of the waste gas inlet. Preferably, the bottom of shower is provided with atomizing nozzle two, the inside of jar body just is provided with the defogging baffle at the top of shower. Preferably, the output end pipeline of the spiral pipeline is connected with an air outlet, and the output end of the liquid storage tank is connected with the input end pipeline of the spray pipe. Preferably, a packing layer is arranged in the tank body and at the bottom of the spray pipe, and a wastewater tank is arranged at the bottom of the inner wall of the tank body and at the bottom of the packing layer. Preferably, the upper end of the outer wall of the nitrogen oxide treatment mechanism is provided with an air outlet, an output end pipeline of the air outlet is connected with a communication pipeline, an output end pipeline of the communication pipeline is connected with an air inlet, an output end of the air inlet is connected with a lower end pipeline of the outer wall of the desulfurization mechanism, an air outlet is fixedly connected with an axle center of the top of the desulfurization mechanism, and the air inlet is arranged at the lower part of the packing layer and is positioned at the upper part of the wastewater tank. The utility model has the beneficial effects that: 1. the utility model provides an exhaust gas treatment device for a marine diesel engine, which is provided with a silicon carbide filter element, so that particles in exhaust gas are effectively filtered, less heat is lost, the normal operation of a nitrogen oxide treatment mechanism is prevented from being influenced, the arrangement of a desulfurization mechanism can remove residual sulfides in the exhaust gas, the emission standard is reached, and the practicability of the device is improved. 2. The utility model provides an