39 results about "Inert gas generator" patented technology

The utility model discloses a methanol storage cabin with isolated void cabins, which comprises a methanol fuel ship main body, a methanol storage cabin and a methanol daily cabin are arranged in the methanol fuel ship main body, the isolated void cabins are arranged around the methanol daily cabin, an inert gas generator is further arranged in the methanol fuel ship main body, and the inert gas generator is connected with the isolated void cabins. The methanol storage cabin is arranged in the methanol fuel ship main body, a hydraulic deep-well pump is arranged in the methanol storage cabin, pressure sensors are arranged in the methanol storage cabin and the methanol daily cabin, the methanol storage cabin is arranged in the methanol fuel ship main body, and an isolation void cabin is arranged around the methanol storage cabin. An inert gas generator and an inert gas storage box are arranged in the methanol fuel ship main body, the inert gas storage box is communicated with the isolation void through a third gas conveying pipe, and inert gas is filled into the isolation void through the inert gas storage box, so that the concentration of combustible gas in the isolation void is lower than the lower limit explosion concentration of methanol.

The invention provides a methanol power CO2 transport ship fuel inerting and filling treatment system and method. The system comprises a methanol fuel supply system, a BOG inerting system and a methanol fuel filling system. According to the invention, BOG generated by heat exchange between liquid CO2 in the ship CO2 storage tank and the outside is ingeniously utilized as inert gas and is introduced into the fuel cabin and the daily cabinet, so that explosion caused by the fact that outside air enters the fuel cabin and the daily cabinet is avoided. According to the invention, an inert gas generator is omitted, the cost of equipping the inert gas generator and the operation cost are reduced, and the economical efficiency is good; and in addition, harmful methanol gas discharged from the fuel cabin during methanol fuel filling is introduced into the GCU unit for combustion, so that environmental pollution and explosion risks possibly caused when the methanol gas is discharged into the atmosphere are avoided, and relatively high practicability and environmental friendliness are achieved.

The invention discloses an integrated biomass carbonization powder making device and method, and the device comprises a raw material storage bin which is connected with a hopper and conveys a biomass material to an exhaust gas heat recovery bin through the hopper; the exhaust gas heat recovery bin is used for heating the biomass material through exhaust gas and then conveying the biomass material to the carbonization and powder preparation integrated equipment; according to the carbonization and powder preparation integrated equipment, biomass materials are ground and heated through a coal mill, the materials with the granularity meeting the first condition are conveyed to a baking pipe through hot air and baked in the baking pipe, and the baked powder meeting the second condition is conveyed to a filter through hot air; the filter conveys the filtered powder to the gasification furnace through conveying equipment, and the filtered gas is output to the exhaust gas heat recovery bin and the inert gas generator through a gas circulating pipeline; the inert gas generator is connected with the carbonization and powder preparation integrated equipment and outputs heated gas to the coal mill and the baking pipe.

The aircraft composite fuel tank inerting system comprises a gas source distribution pipeline; the central wing inerting branch is connected with the central wing oil tank; the central wing inerting branch is provided with a first inert gas generator and a multi-flow switching valve, and the multi-flow switching valve is located on the downstream side of the first inert gas generator and can be switched into a first flow mode and a second flow mode. The flow of inert gas provided in the first flow mode is smaller than that in the second flow mode, the outer wing inerting branch is provided with a second inert gas generator and a first flow limiting piece located on the downstream side of the second inert gas generator, and a single flow mode is achieved through the first flow limiting piece. Inert gas is injected into the center wing fuel tank such that the initial value of the oxygen concentration in the center wing fuel tank in the descent phase is equal to or less than a first upper limit threshold value, and inert gas is injected into the outer wing fuel tank such that the oxygen concentration in the outer wing fuel tank in the cruise phase is equal to or less than a second upper limit threshold value higher than the first upper limit threshold value.

The utility model discloses an integrated biomass carbonization powder making device, the device includes: raw material storage, connecting hopper, through the hopper and send biomass material to the discharge gas heat recovery storehouse, the discharge gas heat recovery storehouse is sent to carbonization powder integrated equipment after heating to biomass material through the discharge gas, carbonization powder integrated equipment carries out the grinding and heating treatment to biomass material through the coal mill, and the granularity of the material that satisfies the first condition is sent to the baking pipe by hot air, carries out the baking treatment in the baking pipe, and the powder material that satisfies the second condition after baking is sent to the filter by hot air, the filter transmits the powder material after filtering to the gasification furnace through the conveying equipment, and the filtered gas is output to the discharge gas heat recovery storehouse and inert gas generator through the gas circulation pipeline, the inert gas generator is connected with carbonization powder integrated equipment, and the heated gas is output to the coal mill and the baking pipe respectively.

The utility model discloses a coal grinding and drying system which at least comprises at least one gas input pipeline, the inert gas generator is connected with the gas input pipeline; the coal mill is connected with an outlet of the inert gas generator; the filter is connected with an outlet of the coal mill; the input end of the emptying pipeline is connected to the outlet of the filter; and the backflow pipeline is arranged in parallel with the emptying pipeline, the input end of the backflow pipeline is connected to the outlet of the filter, the backflow pipeline comprises a first branch line and a second branch line, the output end of the first branch line is connected with the inert gas generator, and the output end of the second branch line is connected to the gas input pipeline. According to the pulverized coal drying system provided by the utility model, the content of nitrogen oxides in exhausted gas can be reduced, and the harm of the system to the environment is reduced.

The application discloses a pyrolysis power generation integrated system and a use method, a coal mill is communicated with a reactor, the reactor is communicated with a carbon burner, the reactor is communicated with a pulverized coke buffer bin, the pulverized coke buffer bin is communicated with a CFB boiler through a boiler feeding device, an air duct burner is communicated with the CFB boiler, the carbon burner is communicated with the boiler feeding device and the air duct burner, the CFB boiler is provided with a flue gas outlet pipeline, and the flue gas outlet pipeline is communicated with the coal mill through a flue gas circulation pipeline.The reactor is communicated with the CFB boiler, the complete utilization of high-temperature pulverized coke sensible heat is realized, flue gas after desulfurization and denitrification in the CFB boiler is extracted and transported to the coal mill as a drying medium of a coal drying system, and an inert gas generator system is saved.The carbon burner is communicated with the CFB boiler, high-temperature flue gas is discharged to a flue gas purification system relying on the power generation CFB boiler to realize the heat energy utilization and purification treatment of the flue gas.

An adjustable inert gas generation assembly for producing a flow of inert gas for introduction into a pipe network of a fire protection system includes an inert gas generator with an outlet in fluid communication with the pipe network and configured for selectively producing a flow of inert gas to the pipe network at least at a first purity level and a second purity level, wherein the first purity level is produced while the assembly is in a first mode and the second purity level is produced while the assembly is in a second mode; wherein the second purity level is higher than the first purity level; and a control circuit in electrical communication with the inert gas generator and configured to selectively switch the inert gas generator between the first and second modes.

The present invention discloses a fire extinguishing system for a fire truck and a fire truck, the fire extinguishing system comprises: an inert gas generator for generating inert gas; a first delivery pipeline, the inlet end of the first delivery pipeline is connected to the outlet end of the inert gas generator; a fire extinguishing agent injection assembly, the inlet end of the fire extinguishing agent injection assembly is connected to the outlet end of the first delivery pipeline; a first pressure detector for detecting the internal pressure of the fire extinguishing agent injection assembly; a throttle valve connected to the first delivery pipeline; a controller, which is connected to the first pressure detector and the throttle valve in communication and is configured to: control the inert gas generator to input inert gas into the fire extinguishing agent injection assembly; determine that the pressure inside the fire extinguishing agent injection assembly reaches a first preset pressure value; control the throttle valve to open a working mode to reduce the flow rate of the inert gas input into the fire extinguishing agent injection assembly. The fire extinguishing system for a fire truck and the fire truck can stably provide inert gas to the fire extinguishing agent injection assembly.

The invention discloses a portable flexible vacuumizing and inert gas mixture filling device, and relates to the technical field of catalyst preparation, the portable flexible vacuumizing and inert gas mixture filling device comprises a vacuum box, an air extractor and an inert gas generator, the air exhauster and the inert gas generator are connected with the vacuum box through pipelines. Through mutual cooperation of the vacuum box, the air extractor and the inert gas generator, the vacuum box is vacuumized through the air extractor, then the vacuum box is filled with inert gas generated by the inert gas generator all the time, and it is ensured that no oxygen is left in the vacuum box when a conductive carrier such as foamed nickel or carbon cloth passes through the vacuum box; the problem that oxygen participates in the catalyst heating process in the electrode production process of an existing water electrolyzer, and the quality of an electrode product is affected is effectively solved.

The present application relates to a passive safety protection device, method, equipment, storage medium and program product for energy storage batteries. The device comprises: a battery compartment for placing energy storage batteries; a circulating air duct, both ends of which are connected to the battery compartment; an inert gas generator, which is connected to the circulating air duct and is used to fill the inert gas into the battery compartment through the circulating air duct; a circulating fan, which is arranged in the circulating air duct and is used to drive the inert gas to circulate in the circulating air duct and the battery compartment. The use of this method can reduce the safety risks of energy storage batteries.

The invention discloses an intelligent power grid insulation on-line monitoring device, and relates to the technical field of intelligent transformer manufacturing, the intelligent power grid insulation on-line monitoring device comprises a bottom plate, the upper surface of the bottom plate is provided with an oil storage tank, an inert gas generator and a quantitative tank, and the surface of the quantitative tank is fixedly provided with two supporting plates; a gas chromatographic separation mechanism and a methanol gas detection mechanism are fixedly mounted on the surfaces of the two supporting plates respectively; a cyclic heating mechanism is arranged in the oil storage tank and comprises a rotary supporting pipe fixedly connected between the inner bottom wall and the inner top wall of the oil storage tank. The methanol content in the transformer oil is accurately detected through the methanol gas detection mechanism, and the methanol content and the polymerization degree of the transformer oil paper have a highly linear relationship, so that the insulation state of the transformer oil paper can be effectively reflected, the insulation state of the oil paper can be accurately monitored, the detection error is greatly reduced, and reliable data support is provided for judging the insulation performance.

The application discloses a marine inert gas generating device cooling system with heat recovery and relates to the technical field of energy-saving heat exchange equipment. The system comprises two connecting plates, a linkage energy-saving assembly arranged on the outer surface of the connecting plates and used for saving power consumption, a U-shaped plate, a support and a planet carrier. The inner surface wall of the support is provided with a bearing, the inner surface wall of the bearing is provided with a driving shaft, the outer surface of the driving shaft is fixedly provided with a rotating impeller, the linkage energy-saving assembly can stably provide seawater conveying power during long-time navigation of the ship, the electric power driving of the electric water pump is not needed in the whole process, continuous power output generated by the auxiliary machine of the ship for maintaining the operation of the water pump is effectively avoided, fuel consumption is reduced, fuel procurement cost is lowered, continuous expenditure related to energy consumption is reduced, and the overall operation cost of the ship is reduced.

The invention discloses a high-safety liquid nitrogen waste gas condensation recycling device, and relates to the technical field of liquid nitrogen waste gas condensation recycling, the high-safety liquid nitrogen waste gas condensation recycling device comprises a gas inlet pipe, a liquid nitrogen wash tail gas buffer tank pressure regulating valve is arranged on the gas inlet pipe, and a liquid nitrogen wash tail gas buffer tank is fixedly mounted on the right side of the gas inlet pipe; an inert gas generator is arranged on the right side of the liquid nitrogen wash tail gas buffer tank, the liquid nitrogen wash tail gas buffer tank is communicated with the inert gas generator through a third pipeline, a sulfur recovery combustion furnace is arranged on the right side of the liquid nitrogen wash tail gas buffer tank, and an elevated torch incandescent light is arranged on the right side of the liquid nitrogen wash tail gas buffer tank; the liquid nitrogen wash tail gas buffer tank is communicated with the elevated torch incandescent light through a first pipeline, the separation device is arranged in the gas inlet pipe, the contact area with harmful gas can be increased through rotation of an activated carbon plate, and the adsorption effect is improved.

An adjustable inert gas generation assembly for producing a flow of inert gas for introduction into a pipe network of a fire protection system includes an inert gas generator with an outlet in fluid communication with the pipe network and configured for selectively producing a flow of inert gas to the pipe network at least at a first purity level and a second purity level, wherein the first purity level is produced while the assembly is in a first mode and the second purity level is produced while the assembly is in a second mode; wherein the second purity level is higher than the first purity level; and a control circuit in electrical communication with the inert gas generator and configured to selectively switch the inert gas generator between the first and second modes.

This application relates to a safety protection method, device, equipment, storage medium and program product for energy storage batteries. The method is applied to an energy storage battery safety protection system, which includes a battery compartment, an inert gas generator and an environmental parameter detector. The method includes: filling the battery compartment with inert gas through the inert gas generator, where the inert gas is used to regulate the initial environmental parameter value in the battery compartment; setting the energy storage battery to the working state when it is detected by the environmental parameter detector that the initial environmental parameter value exceeds the preset initial environmental parameter value range; and issuing a first safety alarm when it is detected by the environmental parameter detector that the working environmental parameter value in the battery compartment exceeds the preset working environmental parameter value range. Using this method can reduce the safety risk of energy storage batteries.

The invention provides a rock core sample obtaining device for geotechnical engineering exploration under a vacuum condition, and relates to the field of geotechnical engineering exploration. The rock core sample obtaining device for geotechnical engineering exploration under the vacuum condition comprises a sampling protective cover, a sealing top plate is arranged at the top of the sampling protective cover, and a cutting table is installed on the inner side wall of the sampling protective cover through two movable shafts. Through mutual cooperation of the sampling protective cover, the inert gas generator, the U-shaped pipe, the first gas inlet pipe, the second gas inlet pipe, the first gas outlet pipe and the second gas outlet pipe, cutting and sampling of the whole rock core are conducted in the sampling protective cover, and under the action of inert gas conveyed by the inert gas generator, air in the sampling protective cover is continuously extruded and discharged outwards; therefore, the contact between the sample and the air in the cutting and taking process can be effectively reduced, so that the obtained sample is closer to the original state, and the subsequently obtained result is more representative and accurate.

The invention discloses a multistage filtering and pressure self-adjusting inert gas generator, and belongs to the technical field of inert gas preparation equipment. The generator comprises a gas generator, a gas temporary storage tank, a multi-stage filtering device, a pressure detection mechanism and a pressure adjusting mechanism, inert gas generated by the gas generator is buffered by the temporary storage tank and then sequentially passes through the first-stage filter box and the second-stage filter box to be subjected to multi-stage purification; the pressure detection mechanism monitors the pressure in the secondary filter tank in real time, triggers the control switch when the pressure is lower than a set threshold value, and starts the pressure regulation mechanism; the pressure adjusting mechanism extracts gas from the temporary storage tank through a cylinder and a crank-link mechanism, pressurizes the gas and then sends the gas back to the primary filter tank, so that the system pressure is automatically compensated and stabilized; the device has the advantages of sensitive pressure detection, fast adjustment response, high filtering efficiency, compact structure, convenience in maintenance and the like, and is suitable for industrial occasions with higher requirements on gas purity and pressure stability.

The invention discloses a ship inert gas self-adaptive control method and system based on multi-parameter fusion, and relates to the technical field of ship safety and automatic control, the ship inert gas self-adaptive control system comprises a main feedback module which is configured to be used for measuring oxygen content reference parameters which are output by an inert gas generator and are slow in response speed; the feed-forward prediction module is configured to be used for measuring smoke color trend parameters, with instantaneous response speed, in a combustion chamber outlet or a smoke pipeline; the signal input end of the self-adaptive control module is connected with the main feedback module and the feedforward prediction module, the self-adaptive control module is configured to be used for receiving combustion chamber pressure and inert gas total load demand signals, and the signal output end of the self-adaptive control module is connected with a fan and an oil supply pump of the air-oil ratio executing mechanism. The problems that in the prior art, due to physical lag of a single oxygen content sensor, system response is slow, and safety redundancy and economic cleaning cannot be considered at the same time are solved.

The utility model relates to the field of metal melting, in particular to a metal melting furnace body capable of accurately controlling the liquid level position, which comprises a coreless furnace body, a voltage stabilizer and an inert gas generator, a protective cover is fixedly arranged on the inner wall of the top of the coreless furnace body, the whole process of smelting and pouring can be protected, air is prevented from entering, metal materials are prevented from being oxidized to influence smelting, and the production efficiency is improved. A gas conveying pipe of the inert gas generator is connected with the middle of the protective cover, the inert gas generator communicates with the pressure stabilizer through the first connecting pipe, the second connecting pipe and the hose, the inert gas generator and the pressure stabilizer are started, inert gas is pumped into the smelting cavity, the inert gas can play a role in protection, metal materials are prevented from being polluted in the smelting and pouring process, and the service life of the metal materials is prolonged. The inert gas generator can pump in gas, pressurization is carried out during liquid transfer to press the molten metal out of the pipe, and the liquid level is accurately controlled through pressure, so that the liquid transfer process is stable and controllable, and the problems of molten metal splashing, oxidation and safety caused by unstable liquid transfer are reduced.

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.

The invention provides nuclear fusion device part machining equipment and method, and relates to the technical field of nuclear fusion part machining. The nuclear fusion device part machining equipment comprises a machining box body, two fixed sliding seats are fixedly connected to the inner bottom of the machining box body, movable sliding strips are slidably connected to the tops of the two fixed sliding seats, and a machining movable plate is jointly and fixedly connected to the upper surfaces of the two movable sliding strips. According to the machining device, an inert gas generator and a second sucking pump are started, protective gas generated by the inert gas generator is fed into a second mounting pipe under the action of the second sucking pump and then enters the machining box body through a plurality of gas inlet branch pipes, and meanwhile, a first sucking pump is started; and air around the first placing seat and the second placing seat is extracted through the four first air suction pipes, and air in the first placing seat is extracted through the four second air suction pipes, so that residual air in the processing box body can be effectively avoided, and the brazing quality is ensured.

This application discloses a marine inert gas generator, relating to the field of gas generators. It includes a base; a combustion unit mounted on the base, which provides a combustion space; an air inlet pipe mounted on the combustion unit, supplying air to the combustion space; and a main burner mounted on the air inlet pipe, supplying fuel to the combustion space. This application utilizes an air inlet on an auxiliary burner housing to inject compressed air, which, in conjunction with a diesel nozzle and spark plug, generates a torch to ignite the fuel supplied by the main burner and form a main flame. Simultaneously, because multiple auxiliary burners are provided, even if a single auxiliary burner fails to ignite, it does not affect the final formation of the main flame, thus significantly reducing oil pollution and fuel waste caused by ignition failure, and avoiding the problem of excessive oxygen content in the inert gas.

The utility model discloses a coal mill blow-down waste gas treatment and recovery system which comprises a coal mill, a dust remover, a circulating fan, an inert gas generator, a coal mill blow-down pipe, a heat exchange recovery device, a separation device and a screw compressor which are sequentially communicated, the screw compressor is communicated with a deaerator, and the heat exchange recovery device is communicated with a settling separation device. According to the system, zero emission of emptying waste gas of the coal mill can be realized, emission of nitrogen oxides and solid particles in an original process is eliminated, and recycling of waste heat of the emptying waste gas is realized.

The invention discloses an oil tank cleaning device and an oil tank cleaning method.The oil tank cleaning device comprises a storage tank, a power tank, a heater, an oil return tank, an oil-water separation device, a heat exchanger and a dirty oil cutting system which are sequentially communicated and form a closed loop; the oil stain cutting system comprises a hollow drill rod communicated with the heat exchanger, a drill rod driving system used for driving the drill rod and a cutter arranged at the end of the drill rod, the cutter comprises a conveying pipe communicated with the drill rod, a drill bit arranged at the end of the conveying pipe, a cutting nozzle and a punching nozzle, and the cutting nozzle and the punching nozzle are arranged on the conveying pipe and communicated with the conveying pipe. A conversion valve and a sliding valve are arranged at the position, communicated with the cutting nozzle and the punching nozzle, in the conveying pipe. The liquid phase in the solid phase in the storage tank is separated, the oil tank is cleaned, external homogeneous oil does not need to be introduced, the storage tank is cleaned to reach the standard, oil, water and solid three-phase separation is achieved, and the purposes of improving the cleaning efficiency and reducing the cleaning cost are achieved.

The invention provides an ice region ship inert gas system, which comprises an inert gas generating device, an ice region ship inert gas generating device, an ice region ship inert gas generating device and an ice region ship inert gas generating device, the inert gas buffering device is communicated with the inert gas generating device, and the inert gas buffering device is used for storing the inert gas generated by the inert gas generating device; and the inert gas buffering device is communicated with the inert gas supercharging device, and the inert gas supercharging device is communicated with the main engine gas supply valve unit. Provided is an inert gas system for a ship in an ice region, in which when fuel is changed from LNG to fuel oil, a part of LNG gas remains inside a pipeline and equipment, and the residual LNG gas can be discharged using inert gas. The inert gas system is used for discharging and dispersing leaked LNG as soon as possible, and the safety of the ship is protected.

The invention discloses multifunctional drying equipment for silicon material production. Comprising a drying oven, a storage device which is arranged in the drying oven and is used for storing silicon materials, heating and drying devices which are arranged at the top and the bottom in the drying oven, an air filtering and purifying device which is arranged at the top of the drying oven and is used for treating air in the drying oven, and an inert gas generator which is connected with the drying oven and is used for conveying inert gas into the drying oven, the oven door is arranged in front of the oven. The drying device has the functions of drying in the inert gas process to avoid oxidation, rapidly cooling the dried silicon material, purifying harmful gas in the drying process, automatically discharging the dried silicon material and sucking dust in the cleaning process, so that the overall production efficiency is improved.

The utility model discloses an inert gas generator with a stable structure for an oil tanker, which belongs to the technical field of inert gas generation, and is characterized by comprising an inert gas generator body, a separation mechanism and a processing mechanism, the separation mechanism is arranged at the top of the inert gas generator body, and the processing mechanism is arranged at the bottom of the inert gas generator body. The inert gas generator body and the separation mechanism are arranged, the inert gas generator body is an existing inert gas generation device, fed raw material gas can be prepared into inert gas, the separation mechanism can be used for preparing the inert gas through the raw material gas conveyed by a raw material gas conveying device externally connected with the treatment mechanism after being treated by the treatment mechanism, and the raw material gas can be separated from the separation mechanism. The treated impurities are intercepted by the intercepting screen plate and introduced into the recycling pipe, and finally conveyed into the storage pipe to be stored, so that subsequent recycling and cleaning are facilitated, the treated raw material gas is provided for the inert gas generator body through the introduction pipe, and the flexibility of treating the impurities in the raw material gas and discharging the impurities in real time is improved.

The invention provides a cambered surface welding device and method based on a titanium alloy plate, and relates to the technical field of titanium alloy plate welding. The cambered surface welding device based on the titanium alloy plate comprises a lower rectangular mounting frame, vertical mounting stand columns are fixedly connected to the four corners of the upper surface of the lower rectangular mounting frame, and an upper rectangular mounting frame is jointly and fixedly connected to the tops of the four vertical mounting stand columns. According to the welding device, an inert gas generator and a gas conveying pump are started, the gas conveying pump extracts inert gas generated by the inert gas generator, and the inert gas enters a gas supply mounting pipeline through a gas supply connecting hose, then enters an arc-shaped shielding block through the gas supply mounting pipeline and finally is sprayed out to the welding position through gas outlet holes; and meanwhile, the arc-shaped shielding blocks are arranged on the two sides of the welding head, so that the influence on other positions of the titanium alloy plate in the welding process can be reduced.

This liquefied gas carrier comprises: a liquefied gas tank for storing liquefied gas; a burner for burning fuel; an inert gas generation device for generating inert gas to be supplied to the liquefied gas tank, the inert gas generation device having a fresh water nozzle for spraying fresh water onto combustion exhaust gas generated by the burner, and a seawater nozzle for spraying seawater onto the combustion exhaust gas after the fresh water is sprayed; an inert-gas-generation-device fresh water tank for storing fresh water to be supplied to the inert gas generation device; a fresh water supply line for supplying fresh water from the inert-gas-generation-device fresh water tank to the inert gas generation device; a seawater supply line for supplying seawater to the inert gas generation device; and a hull in which the liquefied gas tank, the inert gas generation device, the inert-gas-generation-device fresh water tank, the fresh water supply line, and the seawater supply line are mounted.