Ship waste gas desulfurization system with inert gas production function

Abstract

The utility model discloses a ship waste gas desulfurization system with an inert gas production function. The ship exhaust gas desulfurization system comprises a desulfurization and inert gas generation device (3), a desulfurization tower and an inert gas generator are arranged in the desulfurization and inert gas generation device, a diesel oil supply pipeline is configured for the inert gas generator, a gas inlet of the desulfurization tower serves as a gas inlet of the desulfurization and inert gas generation device, and a gas outlet of the inert gas generator serves as a gas outlet of the desulfurization and inert gas generation device; the pre-cooler (1), the fan (2) and the desulfurization and inert gas generation device are connected in series through a pipeline, an air supply pipe is arranged on the airflow upstream side of the fan, and the air supply pipe is communicated with the atmosphere; a gas inlet of the pre-cooler is used as a gas inlet of the ship waste gas desulfurization system and is communicated to a ship engine smoke exhaust chimney; and a gas outlet of the desulfurization and inert gas generation device is used as a gas outlet of the ship waste gas desulfurization system and is communicated to a ship warehouse. The ship waste gas desulfurization system disclosed by the utility model combines desulfurization and inert gas production functions.

Description

Technical Field

[0001] The utility model relates to an industrial waste gas desulfurization device, in particular to a ship waste gas desulfurization system with an inert gas production function. Background Art

[0002] At present, ships powered by diesel are all equipped with desulfurization towers, which are used to desulfurize and wash the exhaust gas discharged by the main engine and auxiliary engines to achieve the purpose of environmental protection.

[0003] At present, according to regulatory requirements, oil tankers, chemical tankers and other flammable cargo transport ships are required to be equipped with an inert gas system, which is used to inject inert gas into the cargo hold to reduce the oxygen concentration, prevent fire and explosion accidents, and ensure the safety of the ship.

[0004] The current problem is that the exhaust gas discharged from the main engine and auxiliary engine of the ship contains a large amount of inert gas components, and these exhaust gases are only discharged into the atmosphere after being washed and desulfurized, and the inert gas components therein are wasted. Summary of the invention

[0005] The utility model aims to provide a ship exhaust gas desulfurization system with an inert gas production function, which combines the desulfurization function and the inert gas production function, realizes the resource recycling of exhaust gas, is beneficial to reduce the operating cost of transport ships and is beneficial to environmental protection.

[0006] In order to achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] A ship exhaust gas desulfurization system with an inert gas production function, the ship exhaust gas desulfurization system comprises a precooler and a fan, the ship exhaust gas desulfurization system also comprises a desulfurization and inert gas generating device; the desulfurization and inert gas generating device is provided with a desulfurization tower and an inert gas generator, and a diesel supply pipeline is configured for the inert gas generator, the air inlet of the desulfurization tower serves as the air inlet of the desulfurization and inert gas generating device, the air outlet of the desulfurization tower is connected with the air inlet of the inert gas generator through a pipeline, and the air outlet of the inert gas generator serves as the air outlet of the desulfurization and inert gas generating device; the precooler, the fan and the desulfurization and inert gas generating device are connected in series through a pipeline, an air supply pipe is provided on the upstream side of the air flow of the fan, and the air supply pipe is connected to the atmosphere; the air inlet of the precooler is connected to the ship engine exhaust chimney as the air inlet of the ship exhaust gas desulfurization system; the air outlet of the desulfurization and inert gas generating device is connected to the ship cargo hold as the air outlet of the ship exhaust gas desulfurization system.

[0008] Furthermore, the engine of the ship includes a main engine and an auxiliary engine, and the air inlet of the ship's exhaust gas desulfurization system is connected to the ship's engine exhaust chimney. Its specific implementation form is: the air inlet of the ship's exhaust gas desulfurization system is simultaneously connected to the main engine chimney and the auxiliary engine chimney through a three-way pipe; the air outlet of the ship's exhaust gas desulfurization system is also connected to the desulfurization exhaust gas chimney.

[0009] Furthermore, the ship exhaust gas desulfurization system also includes a main chimney valve, an auxiliary chimney valve, a main smoke inlet valve, an auxiliary smoke inlet valve, an air supply valve, a diesel supply valve, an inert gas supply valve and a smoke exhaust valve; the main chimney valve is arranged on the main engine chimney, and the main chimney valve is located downstream of the airflow of the main engine chimney and the air inlet of the precooler; the auxiliary chimney valve is arranged on the auxiliary engine chimney, and the auxiliary chimney valve is located downstream of the airflow of the auxiliary engine chimney and the air inlet of the precooler; the main smoke inlet valve is arranged on the pipeline connecting the main engine chimney to the air inlet of the precooler; the auxiliary smoke inlet valve is arranged on the pipeline connecting the auxiliary engine chimney to the air inlet of the precooler; the air supply valve is arranged on the air supply pipe; the diesel supply valve is arranged on the diesel supply pipeline; the inert gas supply valve is arranged on the pipeline connecting the air outlet of the desulfurization and inert gas generating device to the ship cargo hold; the smoke exhaust valve is arranged on the pipeline connecting the air outlet of the desulfurization and inert gas generating device to the desulfurization exhaust gas chimney.

[0010] Furthermore, the ship exhaust gas desulfurization system also includes a system control module, and the main chimney valve, auxiliary chimney valve, main smoke inlet valve, auxiliary smoke inlet valve, air supply valve, diesel supply valve, inert gas supply valve and smoke exhaust valve are all controlled by the system control module.

[0011] Furthermore, in the desulfurization and inert gas generating device, the desulfurization tower and the inert gas generator share a burner and a scrubber.

[0012] Furthermore, the inert gas generator is a post-combustion multifunctional inert gas generator.

[0013] Compared with the prior art, the ship exhaust gas desulfurization system of the utility model has the following beneficial effects:

[0014] In the desulfurization and inert gas generating device in the ship exhaust gas desulfurization system of the utility model, a desulfurization tower and an inert gas generator are provided, that is, the desulfurization and inert gas generating device combines the desulfurization function and the inert gas production function. Based on such functions, the ship exhaust gas desulfurization system can convert part of the exhaust gas discharged from the ship's main engine and auxiliary engine into inert gas to meet the fire protection needs of the cargo hold, thereby realizing the resource reuse of the exhaust gas, which is beneficial to reducing the operating cost of the transport ship on the one hand, and is also beneficial to environmental protection on the other hand.

[0015] The ship exhaust gas desulfurization system of the utility model fully considers the reuse of the exhaust gas of the main and auxiliary engines beyond the washing function; fully considers the inert gas usage demand of the oil-based ship without auxiliary boiler configuration; and fully realizes the effective interpretation of the green energy-saving concept. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of a ship exhaust gas desulfurization system with an inert gas production function according to the utility model. DETAILED DESCRIPTION

[0017] The utility model is further described below with specific embodiments:

[0018] This embodiment provides a ship exhaust gas desulfurization system with an inert gas production function. In addition to the traditional exhaust gas desulfurization effect, the ship exhaust gas desulfurization system can also use the treated exhaust gas as inert gas to meet the fire and explosion protection requirements of the cargo hold.

[0019] It should be noted that the "inert gas" mentioned in this article refers to the "inert gas" used for fire and explosion prevention in ship cargo holds.

[0020] See also Figure 1 The ship exhaust gas desulfurization system of this embodiment includes a precooler 1, a fan 2, a desulfurization and inert gas generating device 3 and a system control module 4.

[0021] The precooler 1 and the fan 2 are conventional prior art equipment;

[0022] The desulfurization and inert gas generating device 3 is composed of a desulfurization tower and an inert gas generator;

[0023] The desulfurization tower and the inert gas generator are both prior art equipment in themselves;

[0024] The desulfurization tower is used to desulfurize the exhaust gas passing through, and the inert gas generator is used to generate inert gas. Its working principle is to consume the oxygen in the exhaust gas by burning fuel (diesel) to obtain inert gas.

[0025] That is to say, the desulfurization and inert gas generating device 3 composed of a desulfurization tower and an inert gas generator can not only perform waste gas desulfurization treatment, but also generate inert gas to meet the fire and explosion protection requirements of ship cargo holds.

[0026] The air inlet of the desulfurization tower serves as the air inlet of the entire desulfurization and inert gas generating device 3 , the air outlet of the desulfurization tower is connected to the air inlet of the inert gas generator through a pipeline, and the air outlet of the inert gas generator serves as the air outlet of the entire desulfurization and inert gas generating device 3 .

[0027] That is to say, in the desulfurization and inert gas generating device 3, the desulfurization tower is located on the upstream side of the inert gas generator, or the inert gas generator is located on the downstream side of the desulfurization tower. In this way, the exhaust gas flowing through the desulfurization and inert gas generating device 3 is first desulfurized by the desulfurization tower, and then flows through the inert gas generator to generate inert gas.

[0028] It should be noted that in the desulfurization and inert gas generating device 3, the desulfurization tower and the inert gas generator share a burner and a scrubber.

[0029] In this embodiment, the inert gas generator is a post-combustion inert gas generator. Specifically, the so-called "post-combustion" means that the exhaust gas of the diesel engine (main engine, generator) is cooled and then introduced into the combustion chamber of the inert gas generating device through a fan for re-combustion to meet the oxygen content requirement.

[0030] The precooler 1, the fan 2 and the desulfurization and inert gas generating device 3 are connected in series through pipelines in sequence. Specifically, the air outlet of the precooler 1 is connected to the air inlet of the fan 2, and the air outlet of the fan 2 is connected to the air inlet of the desulfurization and inert gas generating device 3 (i.e., the air inlet of the desulfurization tower).

[0031] The air outlet of the desulfurization and inert gas generating device 3 (i.e., the air inlet of the inert gas generator) serves as the air outlet of the entire ship exhaust gas desulfurization system and is divided into two passages through a three-way pipe, wherein one passage leads to the chimney, i.e., to the atmosphere, and the other passage leads to the cargo hold area, i.e., the inert gas demand object.

[0032] In order to distinguish it from the chimneys of the main engine and auxiliary engines, the chimney at the gas outlet of the desulfurization and inert gas generating device 3 is called "desulfurization waste gas chimney".

[0033] The air inlet of the precooler 1 is connected to the exhaust gas source as the air inlet of the entire ship exhaust gas desulfurization system to receive the exhaust gas and enter the ship exhaust gas desulfurization system.

[0034] In this embodiment, the air inlet of the precooler 1 simultaneously receives exhaust gas emitted from two exhaust gas sources through a three-way pipeline, one exhaust gas source is the exhaust gas emitted from the chimney of the main engine, and the other exhaust gas source is the exhaust gas emitted from the chimney of the auxiliary engine;

[0035] It should be noted that the main engine refers to the main engine that provides the main driving force for the ship's navigation; the auxiliary engine refers to the generator that provides electricity for the ship's navigation; it is common sense for those skilled in the art that a ship is equipped with a main engine and an auxiliary engine.

[0036] In order to realize the control of various fluids in the entire ship exhaust gas desulfurization system, 8 groups of valves are also arranged in the ship exhaust gas desulfurization system of this embodiment. For the convenience of the following description, the 8 groups of valves are respectively named as the main chimney valve 61, the auxiliary chimney valve 62, the main smoke inlet valve 51, the auxiliary smoke inlet valve 52, the air supply valve 53, the diesel supply valve 54, the inert gas supply valve 55 and the smoke exhaust valve 56.

[0037] A main chimney valve 61 is provided on the main engine chimney, and the main chimney valve 61 is provided at the downstream of the airflow of the "main engine chimney and the air inlet of the precooler 1 communicating part". By controlling the main chimney valve 61, the exhaust gas discharged from the main engine chimney to the atmosphere can be controlled;

[0038] The auxiliary chimney is provided with an auxiliary chimney valve 62, which is located downstream of the "connection between the auxiliary chimney and the air inlet of the precooler 1". By controlling the auxiliary chimney valve 62, the exhaust gas discharged from the auxiliary chimney to the atmosphere can be controlled.

[0039] A main smoke inlet valve 51 is provided on the “pipeline connecting the main engine chimney to the air inlet of the precooler 1 ”. By controlling the main smoke inlet valve 51 , the exhaust gas entering the precooler 1 from the main engine chimney can be controlled.

[0040] An auxiliary smoke inlet valve 52 is provided on the “pipeline connecting the auxiliary machine chimney to the air inlet of the precooler 1 ”. By controlling the auxiliary smoke inlet valve 52 , the exhaust gas entering the precooler 1 from the auxiliary machine chimney can be controlled.

[0041] The precooler 1 is a gas cooling device of the prior art, and its function is to cool the gas flowing through it. An air supply pipe is provided between the precooler 1 and the fan 2, i.e., on the upstream side of the airflow of the fan 2. The air supply pipe is connected to the atmosphere. An air supply valve 53 is provided on the air supply pipe. By controlling the air supply valve 53, air can be introduced from the atmosphere to participate in the combustion to generate inert gas.

[0042] Since the inert gas generator in the desulfurization and inert gas generating device 3 needs to generate inert gas by burning diesel, it is necessary to configure a diesel supply pipeline for the desulfurization and inert gas generating device 3, and the diesel supply pipeline is connected to the inert gas generator to supply diesel. In order to conveniently control diesel combustion, a diesel supply valve 54 is provided on the diesel supply pipeline, and by controlling the diesel supply valve 54, the flow rate of diesel entering the inert gas generator for combustion can be controlled.

[0043] A smoke exhaust valve 56 is provided on the pipeline from the gas outlet of the desulfurization and inert gas generating device 3 (i.e., the gas outlet of the inert gas generator) to the chimney. By controlling the opening of the smoke exhaust valve 56, the gas discharged from the gas outlet of the desulfurization and inert gas generating device 3 can be controlled to be discharged into the atmosphere through the chimney.

[0044] An inert gas supply valve 55 is provided on the pipeline that diverts the gas from the gas outlet of the desulfurization and inert gas generating device 3 (i.e., the gas outlet of the inert gas generator) to the inert gas demanding object. By controlling the opening of the inert gas supply valve 55, the inert gas discharged from the gas outlet of the desulfurization and inert gas generating device 3 can be controlled to flow to the inert gas demanding object to meet the inert gas demand.

[0045] The system control module 4 is essentially a process control computer. The main chimney valve 61, the auxiliary chimney valve 62, the main smoke inlet valve 51, the auxiliary smoke inlet valve 52, the air supply valve 53, the diesel supply valve 54, the inert gas supply valve 55 and the smoke exhaust valve 56 are all controlled by the system control module 4. The system control module 4 can control the switching adjustment of these valves to achieve control of the process flow of the entire ship exhaust gas desulfurization system.

[0046] Specifically, in different scenarios, the control process of the system control module 4 is as follows:

[0047] Scenario a) In normal sailing conditions, inert gas is not added and the exhaust gas from the main engine and auxiliary engine is only desulfurized and scrubbed. In this case:

[0048] 1) Control the main smoke inlet valve 51 and the auxiliary smoke inlet valve 52 to open, control the main chimney valve 61 and the auxiliary chimney valve 62 to close, and the exhaust gas discharged from the main engine and the auxiliary engine enters the ship exhaust gas desulfurization system;

[0049] 2) Control the air supply valve 53 and the diesel supply valve 54 to be closed, and the exhaust gas is pre-cooled by the pre-cooler 1, and then introduced into the desulfurization and inert gas generating device 3 by the fan 2, and desulfurization and washing are carried out in the desulfurization tower;

[0050] 3) Control the inert gas supply valve 55 to close and the smoke exhaust valve 56 to open, and the waste gas after desulfurization and washing is discharged into the atmosphere through the chimney.

[0051] Scenario b) Inert gas needs to be supplemented under normal navigation conditions. Part of the exhaust gas from the main engine and auxiliary engines is used to generate inert gas. In this case:

[0052] 1) Switch the main engine and auxiliary engine to 0.5% low sulfur oil operation;

[0053] 2) According to the amount of inert gas required to be supplemented, the system control module 4 is used to dynamically adjust the opening and closing degrees of the main smoke inlet valve 51 and the auxiliary smoke inlet valve 52 as well as the main chimney valve 61 and the auxiliary chimney valve 62, so that an appropriate amount of exhaust gas from the main engine and auxiliary engines enters the ship exhaust gas desulfurization system through the main smoke inlet valve 51 and the auxiliary smoke inlet valve 52, and the rest is discharged into the atmosphere through the main chimney valve 61 and the auxiliary chimney valve 62;

[0054] 3) The air supply valve 53 is controlled to be closed, and the diesel supply valve 54 is opened. The exhaust gas passes through the inert gas generator in the desulfurization and inert gas generating device 3 to reduce the oxygen content and is washed to generate inert gas that meets the standards;

[0055] 4) The inert gas supply valve 55 is controlled to be open and the smoke exhaust valve 56 is closed, and the inert gas enters the cargo hold area through the inert gas supply valve 55 for air replenishment.

[0056] Scenario c) Port unloading conditions, part of the exhaust gas of the auxiliary engine is used to generate inert gas. In this case:

[0057] 1) According to the control situation of the sulfur emission area of ​​the port, the auxiliary engine is switched to 0.5% or 0.1% low sulfur oil operation. At this time, the main engine is usually in a parking state, and the main smoke inlet valve 51 and the main chimney valve 61 are controlled to be in a closed state;

[0058] 2) According to the amount of inert gas required, the system control module 4 dynamically adjusts the opening and closing degree of the auxiliary smoke inlet valve 52 and the auxiliary chimney valve 62, so that an appropriate amount of auxiliary engine exhaust gas enters the ship exhaust gas desulfurization system through the auxiliary smoke inlet valve 52, and the rest is discharged into the atmosphere through the auxiliary chimney valve 62;

[0059] 3) The air supply valve 53 is controlled to be closed, and the diesel supply valve 54 is opened. The exhaust gas passes through the inert gas generator in the desulfurization and inert gas generating device 3 to reduce the oxygen content and is washed to generate inert gas that meets the standards;

[0060] 4) The inert gas supply valve 55 is controlled to be open and the smoke exhaust valve 56 is closed, and the inert gas enters the cargo hold area through the inert gas supply valve 55 for air replenishment.

[0061] Scenario d) Port unloading conditions, all exhaust gas from auxiliary engines is used to generate inert gas. In this case:

[0062] 1) The auxiliary machine does not need to be operated with low-sulfur oil, but can be operated with high-sulfur oil. At this time, the main engine is usually in a parking state, and the main smoke inlet valve 51 and the main chimney valve 61 are both in a closed state;

[0063] 2) The auxiliary chimney valve 62 is closed and the auxiliary smoke inlet valve 52 is opened. The exhaust gas from the auxiliary engine enters the ship exhaust gas desulfurization system through the auxiliary smoke inlet valve 52;

[0064] 3) The air supply valve 53 is closed, the diesel supply valve 54 is opened, and the exhaust gas enters the desulfurization and inert gas generating device 3. The exhaust gas is desulfurized and washed in the desulfurization tower and then passes through the inert gas generator to reduce the oxygen content, thereby generating inert gas that meets the standards and reducing the sulfur content to meet the port emission requirements;

[0065] 4) The inert gas supply valve 55 and the smoke exhaust valve 56 are opened, and the required inert gas enters the cargo hold area through the inert gas supply valve 55 for air replenishment, and the remaining inert gas is discharged into the atmosphere through the smoke exhaust valve 56.

[0066] Scenario e) When both the main engine and auxiliary engine fail, the emergency inert gas usage condition is as follows:

[0067] 1) The main engine and auxiliary engine fail at the same time, and no exhaust gas enters the ship exhaust gas desulfurization system through the auxiliary smoke inlet valve 52 and the main smoke inlet valve 51;

[0068] 2) The air supply valve 53 is opened, and the diesel supply valve 54 is opened. At this time, the inert gas generator in the desulfurization and inert gas generating device 3 can be used as a conventional IGG to generate inert gas using air;

[0069] 3) The inert gas supply valve 55 is opened, the smoke exhaust valve 56 is closed, and the inert gas enters the cargo hold area through the inert gas supply valve 55 for air replenishment.

[0070] The ship exhaust gas desulfurization system of this embodiment has the advantages that:

[0071] In the ship exhaust gas desulfurization system of this embodiment, an inert gas production function is combined. Based on this function, the ship exhaust gas desulfurization system can convert part of the exhaust gas discharged from the ship's main engine and auxiliary engine into inert gas to meet the fire protection needs of the cargo hold, thereby realizing the resource reuse of the exhaust gas. On the one hand, it is beneficial to reduce the operating costs of transport ships, and on the other hand, it is also beneficial to environmental protection.

[0072] In addition, the ship exhaust gas desulfurization system of this embodiment fully considers the reuse of exhaust gas from main and auxiliary engines beyond the exhaust gas washing function; fully considers the inert gas usage demand of oil-fired ships without auxiliary boilers; and fully realizes the effective interpretation of the green energy-saving concept.

[0073] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A ship exhaust gas desulfurization system with an inert gas production function, the ship exhaust gas desulfurization system comprising a precooler (1) and a fan (2), characterized in that: The ship exhaust gas desulfurization system also includes a desulfurization and inert gas generating device (3); The desulfurization and inert gas generating device (3) is provided with a desulfurization tower and an inert gas generator, and a diesel supply pipeline is configured for the inert gas generator, the air inlet of the desulfurization tower serves as the air inlet of the desulfurization and inert gas generating device (3), the air outlet of the desulfurization tower is connected with the air inlet of the inert gas generator through a pipeline, and the air outlet of the inert gas generator serves as the air outlet of the desulfurization and inert gas generating device (3); The precooler (1), the fan (2) and the desulfurization and inert gas generating device (3) are connected in series through pipelines, and an air supply pipe is provided on the upstream side of the airflow of the fan (2), and the air supply pipe is connected to the atmosphere; The air inlet of the precooler (1) is connected to the ship engine exhaust chimney as the air inlet of the ship exhaust gas desulfurization system; The gas outlet of the desulfurization and inert gas generating device (3) is connected to the ship cargo hold as the gas outlet of the ship exhaust gas desulfurization system.

2. The ship exhaust gas desulfurization system with inert gas production function according to claim 1 is characterized in that: The ship's engine includes a main engine and an auxiliary engine, and the air inlet of the ship's exhaust gas desulfurization system is connected to the ship's engine exhaust chimney, which is specifically implemented in the form of: the air inlet of the ship's exhaust gas desulfurization system is simultaneously connected to the main engine chimney and the auxiliary engine chimney through a three-way pipeline; The gas outlet of the ship exhaust gas desulfurization system is also connected to a desulfurization exhaust gas chimney.

3. The ship exhaust gas desulfurization system with inert gas production function according to claim 2 is characterized in that: The ship exhaust gas desulfurization system further comprises a main chimney valve (61), an auxiliary chimney valve (62), a main smoke inlet valve (51), an auxiliary smoke inlet valve (52), an air supply valve (53), a diesel supply valve (54), an inert gas supply valve (55) and a smoke exhaust valve (56); The main chimney valve (61) is arranged on the main engine chimney, and the main chimney valve (61) is located downstream of the airflow of the connecting portion between the main engine chimney and the air inlet of the precooler (1); The auxiliary chimney valve (62) is arranged on the auxiliary machine chimney, and the auxiliary chimney valve (62) is located at the downstream of the air flow of the connecting portion between the auxiliary machine chimney and the air inlet of the precooler (1); The main smoke inlet valve (51) is arranged on a pipeline connecting the main engine chimney to the air inlet of the precooler (1); The auxiliary smoke inlet valve (52) is arranged on a pipeline connecting the auxiliary machine chimney to the air inlet of the precooler (1); The air supply valve (53) is arranged on the air supply pipe; The diesel supply valve (54) is arranged on the diesel supply pipeline; The inert gas supply valve (55) is arranged on a pipeline connecting the gas outlet of the desulfurization and inert gas generating device (3) to the ship cargo hold; The smoke exhaust valve (56) is arranged on a pipeline connecting the gas outlet of the desulfurization and inert gas generating device (3) to the desulfurization waste gas chimney.

4. The ship exhaust gas desulfurization system with inert gas production function according to claim 3 is characterized in that: The ship exhaust gas desulfurization system further comprises a system control module (4), and the main chimney valve (61), the auxiliary chimney valve (62), the main smoke inlet valve (51), the auxiliary smoke inlet valve (52), the air supply valve (53), the diesel supply valve (54), the inert gas supply valve (55) and the smoke exhaust valve (56) are all controlled by the system control module (4).

5. The ship exhaust gas desulfurization system with inert gas production function according to claim 1 is characterized in that: In the desulfurization and inert gas generating device (3), the desulfurization tower and the inert gas generator share a burner and a scrubber.

6. The ship exhaust gas desulfurization system with inert gas production function according to claim 1, characterized in that: The inert gas generator is a post-combustion multifunctional inert gas generator.

Images