377results about "Fuel feeders" patented technology

To provide a system contributing to a counter measure against the global warming using steam.SOLUTION: The steam utilization system comprises a combustor 7 combusting hydrogen as fuel with oxygen as combustion-supportive gas, a steam action unit 2 heating or driving an object using the heat or the pressure of steam supplied from the combustor 7, and a steam electrolysis device 6 carrying out steam electrolysis using the whole or part of steam outputted from the steam action unit 2. The hydrogen and oxygen outputted from the steam electrolysis device 6 are supplied to the combustor 7 as hydrogen used as fuel and oxygen used as combustion-supportive gas for the combustor 7, respectively.SELECTED DRAWING: Figure 1

The invention belongs to the field of pollutant control, and particularly discloses a method and system for reducing generation of nitric oxide in the ammonia coal combustion process. The method specifically comprises the steps that liquid ammonia is gasified and then subjected to a thermocatalytic reaction to generate hydrogen and nitrogen, and ammonia-doped mixed gas is obtained; and judging whether the ratio of the concentration of hydrogen to the concentration of ammonia in the ammonia-doped mixed gas is greater than or equal to a threshold value or not, if so, discharging the ammonia-doped mixed gas for blending combustion, and if not, carrying out thermal catalytic reaction on the ammonia-doped mixed gas again. According to the method, the ratio of the concentration of hydrogen to the concentration of ammonia in the ammonia-doped mixed gas serves as the judgment standard for whether blending combustion can be conducted or not, the calculation formula of the threshold value is provided by balancing the influence of H2 and NH3 on NOx generation in the combustion process, then flexible regulation and control can be conducted on the raw material side according to the actual blending combustion condition, and the blending combustion efficiency is improved. The method effectively reduces the generation of nitrogen oxides in the ammonia coal combustion process, does not need to regulate and control the combustion side, does not affect the combustion stability and the boiler thermal efficiency, and has the advantages of simple operation and low cost.

The invention discloses a natural gas supply device for an industrial furnace, which relates to the technical field of gas supply systems for industrial furnaces, and comprises an annular guide rail which is arranged at the side end of a gas inlet flow regulation and control valve pipe in a sleeving manner and is used for driving an adjusting shaft and an ultrasonic generator to be positioned at the side end of a gas inlet pipeline to carry out ultrasonic frequency emission regulation and control, under the cooperation of the oxygen-containing regulation and control assembly, the oxygen content proportion in the natural gas in the oxygen-containing conveying pipe is rapidly corrected, the precise oxygen content needed by combustion of the industrial furnace is guaranteed, super-uniform mixing of natural gas and oxygen is integrally achieved, the incomplete combustion phenomenon caused by fluctuation of the oxygen content is reduced, and the heating effect and the product quality are improved; and under the cooperation of the ultrasonic adjusting assembly, more complex pipeline impurity conditions can be treated, so that emission parameters and reflection angles of self-adaptive automatic adjustment ultrasonic waves are formed, natural gas conveying is smoother, and therefore the combustion stability and heat efficiency of the industrial furnace are improved.

To mix fuel using ammonia with combustion air for stable combustion, suppress an increase in a combustion temperature, and prevent damage of a tip part, etc. of a fuel feeding pipe in the vicinity of a combustion part.SOLUTION: When fuel using ammonia NH3 is ejected from a fuel ejection port 11 provided at a tip part of a fuel feeding pipe 10, is mixed with combustion air Air guided from an outer periphery of the fuel feeding pipe and is burned in a combustion part, an ammonia decomposition device 40 for decomposing the ammonia into hydrogen gas and nitrogen gas is provided in the fuel feeding pipe, a result obtained by detecting a temperature in the vicinity of the combustion part by using a temperature sensor 31 is output to a control device 30, and the amount of ammonia to be decomposed into hydrogen gas H2 and nitrogen gas N2 by using the ammonia decomposition device is controlled by the control device.SELECTED DRAWING: Figure 4

A plant (1) for drying material for the production of asphalt comprises a drying unit (2) for drying mineral and / or recycled asphalt, b. a heating unit connected to the drying unit (2), which comprises a hydrogen burner (4), a hydrogen source (13, 20, 21, 22) for providing hydrogen gas and a pressure control line (14) connecting the hydrogen source (13, 20, 21, 22) and the hydrogen burner (4), wherein the pressure control line (14) has a processing pressure reducer (34) which is connected to the hydrogen burner (4) and for providing the hydrogen gas at processing pressure (p V ) and for multi-stage pressure relief of the hydrogen gas, a low-pressure reducer (28) and / or a high-pressure reducer (26).

The invention discloses a coal power unit flue gas waste heat power generation carbon dioxide capture comprehensive utilization system, which is characterized in that a flue gas waste heat ammonia steam turbine generator set is replaced by a flue gas waste heat low-temperature nitrogen steam turbine generator set or an expansion machine generator set, low-temperature nitrogen after doing work absorbs heat from flue gas, the flue gas is reduced to a lower temperature, and the flue gas waste heat ammonia steam turbine generator set is replaced by the expansion machine generator set. Carbon dioxide trapped after purification treatment is hydrogenated to prepare methanol which returns to the boiler for combustion, and the process is repeated, so that the coal consumption of the boiler can be reduced, and the problems of carbon dioxide absorption and storage are solved; part of power generated by the low-temperature nitrogen steam turbine generator unit or the expansion machine generator unit is used for producing hydrogen / oxygen by electrolyzing water, a low-temperature nitrogen freezing treatment device and other auxiliary machines, and the rest part increases the on-grid power, so that the benefits of the coal power unit are greatly improved. The methanol returns to the boiler for combustion, so that the effects of low-load stable combustion of the boiler and rapid load rising of the boiler can be achieved, and the requirements of deep peak regulation and high load change rate of a new-generation coal power unit are met.

The utility model discloses a natural gas chemical looping combustion system which is characterized in that a reduction-state oxygen carrier in the system is in direct contact with air in an air reactor, the oxygen carrier is oxidized, and after the oxidation-state oxygen carrier and the air enter a cyclone separator to be separated, the oxygen carrier is conveyed to a fuel reactor to be mixed with gas fuel; sufficient combustion of gas fuel is achieved, high-temperature flue gas full of water vapor and CO2 is generated, and the high-temperature flue gas carries a reduction-state oxygen carrier to enter a separator. After passing through the separator, the oxygen carrier is captured and returned to the fuel reactor and is conveyed back to the air reactor through the controllable valve for the next circulation, and the high-temperature flue gas enters a flue gas treatment system. Part of the high-temperature flue gas enters the material returning device and the controllable valve through the circulating fan to be subjected to material fluidization, so that energy consumption is reduced, water vapor contained in the rest high-temperature flue gas is condensed through heat exchange cooling, high-purity CO2 gas is obtained, and efficient combustion of gas fuel and efficient separation of CO2 are achieved.

The utility model relates to the technical field of ammonia energy utilization, in particular to a gas supply adjusting device based on pure ammonia fuel. The gas supply adjusting device comprises a gas supply pipeline, an igniter gas supply unit and a main furnace fire head gas supply assembly, the main furnace fire head gas supply assembly comprises a first-stage gas supply unit, a second-stage gas supply unit to an n-stage gas supply unit which are connected in parallel, and the gas supply flow is sequentially reduced from the first-stage gas supply unit to the n-stage gas supply unit. Due to the fact that the main furnace fire head gas supply assembly comprises the multiple stages of gas supply units which are connected in parallel, and the gas supply flow is sequentially reduced, when the combustion flow needs to be increased and the heating capacity needs to be improved, the low-stage gas supply units can be started, and gear shifting type adjustment is achieved. And meanwhile, as the igniter gas supply unit is provided with the throttling orifice assembly to adjust the gas flow, small-flow adjustment of gas can be achieved, the flow entering the plasma ignition burner can be accurately controlled, and the success rate of ignition of the igniter in the plasma ignition burner is increased.

The utility model discloses a system for prolonging the service life of blades of a blast furnace gas excess pressure turbine, which belongs to the technical field of blast furnace equipment and comprises a blast furnace, the blast furnace is connected with a dust removal system through a gas pipeline, the dust removal system is connected with a gas inlet of a gas heating device through the gas pipeline, and a gas outlet of the gas heating device is connected with a TRT or BPRT unit through the gas pipeline. The coal gas heating device is connected into the circulating hydrothermal system through a hydrothermal pipeline, and the circulating hydrothermal system further comprises an intermediate water circulating pump and a flue gas cooler. The smoke heat of the hot blast stove is utilized through the circulating hydrothermal system, so that the consumption of an energy medium is reduced; the temperature of inlet gas of the TRT or BPRT unit is increased through the circulating hydrothermal system, so that the problem of corrosion of turbine blades is solved, and the service life of the blades is greatly prolonged; the salt accumulation problem of the TRT or BPRT turbine blade is solved, the scale inhibitor is reduced or omitted, and the operation cost is saved.

The invention provides a staged ammonia-assisted combustor adopting exhaust gas recirculation preheating, which belongs to the field of combustors, and comprises a reaction gas pipeline, an exhaust gas pipeline, a combustion pipeline, a secondary air pipeline, a swirler, an air distributor, an igniter and a flame arrester, an air distributor is installed at the junction of the reaction gas pipeline and the secondary air pipeline, flame arresters and igniters are installed on the front portion and the rear portion of an inlet of the combustion pipeline respectively, and flame arresters are installed at the two ends of an outlet of the secondary air pipeline respectively; after being preheated by exhaust gas recirculation, a small part of reaction gas is fed into the combustion pipeline by the air distributor and is ignited by the igniter to form stable stagnant flames, and a large amount of mixed gas from the secondary air pipeline is ignited. The device is used for solving the problem that stable ignition and combustion of ammonia are difficult, meanwhile, the device is simple in structure, easy to manufacture and high in component adaptability, and energy utilization of the ammonia is promoted.

A system and method of providing prime reliability of a primary fuel manifold upon failure of a primary fuel metering system by providing metered fuel from a secondary fuel metering system are provided. The system utilizes a transfer electro-hydraulic servo valve (EHSV), a discharge select valve (DSV) coupled to the EHSV, and a pair of throttling valves positioned between secondary fuel metering system and the primary and secondary fuel manifolds. The DSV has a multi-land piston that switches a control pressure and a shutoff pressure between the pair of throttling valves to transfer the supply of metered fuel of the secondary fuel metering system from the secondary fuel manifold to the primary fuel manifold. The output pressurizing valve of the failed primary fuel metering system is also closed to isolate the failed primary fuel metering system from the primary fuel manifold.

To provide a combustion system capable of suppressing emission of greenhouse effect gas caused by mixed combustion of combustion supporting fuel with mixed gas containing inert gas and hydrocarbon gas while suppressing atmospheric emission of hydrocarbon gas.SOLUTION: A combustion system 1 includes: a membrane separation device 3 that generates process gas Gp obtained by separating at least part of nitrogen gas Gn from mixed gas Gm by using a separation membrane; a boiler 19 capable of burning at least any of methane gas Gh, the mixed gas Gm and the process gas Gp; and a mixed gas control section 6 that controls supply of the mixed gas Gm to the membrane separation device 3. When inert gas ratio determination means 9 determines a ratio is larger than a first threshold value, the mixed gas control section 6 supplies the mixed gas Gm from a mixed gas line 2 to the membrane separation device 3.SELECTED DRAWING: Figure 1

The invention provides a technical method for using natural gas and hydrogen mixed fuel for aluminum electrolysis anode roasting and a mixer, and belongs to the technical field of anode roasting. The invention relates to the technical field of natural gas mixing. According to the method, hydrogen in a certain proportion is mixed into natural gas through the mixer, the mixed gas serves as fuel to roast the aluminum electrolysis anode green block, the production process requirement is met, and the curve is matched with an original roasting temperature rise curve. According to the method, carbon emission in the production process can be reduced, climate changes can be coped, the combustion efficiency of natural gas can be improved, and energy waste in the production process is reduced. And the compression strength and the specific resistance of the aluminum electrolysis prebaked anode prepared from the fuel are equivalent to those of an aluminum electrolysis prebaked anode obtained by calcining natural gas.

The fuel gas supply pipeline system comprises a fuel gas conveying pipe arranged in a valve group box body, a box body fuel gas inlet pipe and a box body fuel gas outlet pipe are arranged on the valve group box body, the input end of the fuel gas conveying pipe is arranged in the box body fuel gas inlet pipe in a penetrating mode and connected with a fuel gas source, and the output end of the fuel gas conveying pipe is connected with the fuel gas source. The output end of the fuel gas conveying pipe is arranged in the fuel gas outlet pipe of the box body in a penetrating mode and connected with the combustor, a pressure regulating valve and a flow regulating valve are arranged on the fuel gas conveying pipe, and a first fuel gas control valve and a second fuel gas control valve are arranged on the fuel gas conveying pipe between the pressure regulating valve and the flow regulating valve. A first pressure detection element is arranged between the first gas control valve and the second gas control valve, and a first emptying pipe is connected to the gas conveying pipe between the first gas control valve and the second gas control valve; and the first nitrogen conveying pipe in the valve group box body is connected to the fuel gas conveying pipe between the flow regulating valve and the second fuel gas control valve. The method has the advantage that the stability and the safety are greatly improved.

The invention relates to a gas burner (5) for an industrial furnace (1), comprising: - gas (20) and air (31) supply circuits, - first and second ejection nozzles (41, 51), connected to a respective end of a first and second nozzle (40, 50) extending along a respective longitudinal axis (X1, X2), and respectively having a first through-orifice (43), oriented parallel to the first longitudinal axis (X1), and a second through-orifice (53) transverse to the second longitudinal axis (X2), the gas supply circuit (20) supplying the ejection nozzles with gas and comprising first and second gas conduits (27a, 27b) in fluid communication therewith, the air supply circuit (31) supplying the first and second nozzles, the first and second ejection nozzles (41, 51) each comprising an internal portion in the first, respectively second, nozzle and an external portion projecting therefrom.Figure for abstract: 1.

To surely prevent seal failure in closing a solenoid valve 533 even in using a partition plate 52 composed of a roll material, in a gas manifold including a nozzle block 51 having a plurality of nozzle chambers 511 opened forward, a partition plate 52 covering the nozzle chambers 511 from a front part, and a valve block 53 having a gas inflow chamber 531 recessed at a front part, and provided with a plurality of solenoid valves 533 to control gas supply to the plurality of nozzle chambers 511 through a plurality of communication holes 521 formed on the partition plate 52.SOLUTION: Valve seats 535 which are provided with valve holes 535a facing each of through holes 521 of a partition plate 52 and on which valve elements 533b of solenoid valves 533 can sit, are integrally formed on a valve block 53 in a state of being joined to upper and lower wall portions of a gas inflow chamber 531 through upper and lower bridge portions 535b projecting at upper and lower parts of the valve seat.SELECTED DRAWING: Figure 1

In a fuel supply system that supplies gaseous fuel to the engine of a vehicle, the fluid pressure of the discharged gaseous fuel can be adjusted by electronic control, and the fluid pressure of the gaseous fuel can be safely released in the event of a malfunction such as a power supply failure. [Solution] In a fuel supply system 100 that supplies gas fuel to an engine 6, the system includes an electronically controlled regulator 3 that reduces the introduced gas fuel to a set pressure and discharges it, a pressure sensor 7 that detects the fluid pressure of the gas fuel after reduction, and a normally open electromagnetic relief valve 8 provided downstream of the pressure regulating valve of the electronically controlled regulator 3. The electromagnetic relief valve 8 opens when the fluid pressure detected by the pressure sensor 7 reaches a pressure threshold or when the system is not energized, releasing the gas fuel outside the system.

This invention provides a boiler system that can effectively utilize the heat contained in ammonia decomposition gas. Furthermore, it provides a boiler system that can maintain the temperature of the ammonia decomposition gas at the boiler inlet within a predetermined temperature range. [Solution] The boiler system comprises an ammonia decomposition device that decomposes ammonia to produce ammonia decomposition gas containing hydrogen and nitrogen, a boiler that burns the ammonia decomposition gas as fuel, an ammonia decomposition gas supply line that supplies the ammonia decomposition gas from the ammonia decomposition device to the boiler, a feedwater line that supplies feedwater to the boiler, and a heat exchanger that heats the feedwater by exchanging heat between the ammonia decomposition gas and the feedwater.

The utility model discloses a low-calorific-value fuel gas calorific value adjusting device for stabilizing combustion of a hydrogen conversion furnace, which comprises a high-calorific-value analytic gas buffer tank and a controller, and the high-calorific-value analytic gas buffer tank is connected with a high-calorific-value analytic gas compressor through a gas pipeline. The high-calorific-value desorption gas compressor is connected with a low-calorific-value fuel gas pipeline through a high-pressure pipeline, an electric control valve controlled by a controller is arranged on the high-pressure pipeline, a gas analyzer controlled by the controller is arranged on the low-calorific-value fuel gas pipeline, and a mixing buffer tank is arranged at the tail end of the low-calorific-value fuel gas pipeline. According to the utility model, the mode that high-calorific-value analysis gas is supplied to low-calorific-value fuel gas is adopted, the low-calorific-value fuel gas pipeline is connected with the high-pressure pipeline, the high-calorific-value analysis gas is supplied to the low-calorific-value fuel gas conveying pipeline according to the detection of the gas analyzer and the adjustment requirements of the calorific value, and then the high-calorific-value analysis gas is mixed through the mixing buffer tank; and the adjusted low-calorific-value fuel gas is conveyed to the hydrogen production reformer, so that the hydrogen production reformer can stably burn.

In a gas burner for burning hydrogen gas by a diffusion combustion system, a plurality of flame holes 2 are formed in a tubular burner body 21 side by side in the longitudinal direction of the burner body 21, a distribution passage 6 for distributing hydrogen gas to the plurality of flame holes 2 is provided inside the burner body 21, and a gas supply passage 61 for supplying hydrogen gas is connected to the distribution passage 6.SOLUTION: The gas supply passage 61 is connected to the distribution passage 62 from a direction crossing the longitudinal direction of the burner body 21. The distribution passage 26 is provided with a suppressing member 27 which is positioned in a predetermined range Xa including the connecting part 61a of the gas supplying passage 61 in the longitudinal direction of the burner body 21 and suppresses the hydrogen gas from flowing from the connecting part 61a toward the flame hole 22 existing in the predetermined range Xa.SELECTED DRAWING: Figure 5

At least one aspect of the present technology provides a self-contained treatment plant for converting organic and high-water waste, such as fecal sludge and garbage, into electricity while also generating and collecting potable water.

A glass manufacturing apparatus (1) includes a recuperator (60) configured to heat a heat medium through heat exchange with a combustion gas emitted from a glass melting furnace (10), a first reactor (71) configured to produce CH4 gas and H2O gas from CO2 gas and H2 gas by performing a methanation reaction, an water vapor controller (73) configured to adjust an H2O concentration in a product of the first reactor by removing at least a part of the H2O gas from the product of the first reactor, a second reactor (72) configured to produce CO gas and H2 gas from the product of the first reactor with the H2O concentration adjusted in the water vapor controller by performing at least one of a dry reforming reaction and a steam reforming reaction through heat exchange with the heat medium heated by the recuperator, and a burner (20) configured to form a flame in the glass melting furnace by burning a oxidizing gas and a flammable gas containing the CO gas and the H2 gas produced by the second reactor.

The utility model belongs to the technical field of blending combustion carbon reduction of a thermal power plant, and particularly provides a coal-fired thermal power plant boiler under-pressure gas blending combustion system, which is characterized by comprising a power station boiler (1), a steam turbine generator (3), a gas supply device (4), a gas supply device (5), a gas supply device (6), a gas supply device (7) and a gas supply device (8), and the power station boiler (1) is used for burning coal to produce steam and supplying the steam to the steam turbine generator (3). The pressurized combustible gas comes from hydrogen prepared by coal gasification or mixed gas of certain components; and the pressure reducing equipment is arranged at the upstream of the power station boiler (1) and is used for feeding the pressurized combustible gas into the power station boiler (1) after reducing the pressure of the pressurized combustible gas. In the system, the power station boiler (1) uses coal as main fuel to produce steam, combustible gas can also be combusted to support combustion or replace part of coal, the pressure reduction equipment reduces the pressure of the pressurized combustible gas and then feeds the pressurized combustible gas into the power station boiler (1) to be combusted, and the pressure requirement of blending combustion is met.

This heat treatment facility for performing a heat treatment on an object comprises: a heat treatment furnace into which the object is introduced; a storage part which stores ammonia; a supply line which removes ammonia from the storage part; a decomposition part which is provided on the supply line and decomposes ammonia into hydrogen and nitrogen; and a combustion part which is provided in the heat treatment furnace and generates combustion gas by burning at least hydrogen from among the gas supplied from the decomposition part through the supply line.

The invention discloses an LNG transport ship BOG multi-stage utilization system based on magnetic suspension energy-saving equipment. The LNG transport ship BOG multi-stage utilization system comprises an LNG storage tank, a magnetic suspension BOG direct expansion generator set, a first storage tank, a gas-fired boiler set, a magnetic suspension ORC low-temperature waste heat generator set, an energy storage battery, a second storage tank, a magnetic suspension BOG reliquefaction system and connecting pipelines. BOG gas is divided for the first time according to the volume ratio, the part with the large volume ratio after division is directly conveyed to a second storage tank, the other part is divided for the second time according to the volume ratio, the part with the large volume ratio after division is conveyed to a gas-fired boiler set and a magnetic suspension BOG direct expansion generator set after even division, and the gas-fired boiler set exchanges heat with a magnetic suspension ORC low-temperature waste heat generator set; bOG gas expanded by the magnetic suspension BOG direct expansion generator set is conveyed to a second storage tank to be mixed, and then is recycled by a magnetic suspension BOG reliquefaction system. The system is simple, the occupied space is small, and the space utilization rate of the ship is increased; reutilization in the multi-stage BOG liquefaction process is achieved, and the energy re-liquefaction conversion and utilization efficiency is improved.

A method for combustion of an ammonia mixed fuel, according to one embodiment, comprises: a fuel adjustment step of preparing a mixed fuel containing ammonia and hydrogen by mixing ammonia and hydrogen such that hydrogen is mixed in an amount in excess of gaseous ammonia on a volume basis; and a combustion step of supplying the mixed fuel and oxygen to an ammonia combustion catalyst to perform combustion.

To simply execute O2 trimming.SOLUTION: A combustion system is equipped with a combustor (burner 112), an air supply path 232 connected to the combustor, a gas supply path 212 connected to the combustor, a trimming valve 256 provided in the air supply path 232, an oxygen sensor that measures oxygen concentration in exhaust gas generated in the combustor, and an opening adjusting portion 142 that adjusts an opening of the trimming valve 256 on the basis of a measurement value of the oxygen sensor.SELECTED DRAWING: Figure 2

The present invention makes it possible to reduce ignition noise in a heating cooker comprising a gas burner as a heat source, wherein a gas cock 62, which has a safety valve 622 and a plug 621 that rotates to a fully open position due to an ignition operation, is interposed in a gas supply passage 61 to the gas burner.　A solenoid valve 64 is interposed in the gas supply passage 61 in series with the gas cock 62, and an orifice 65 is interposed in the same in parallel with the solenoid valve 64. At the time of an ignition operation, an ignition means that is attached to the gas burner is operated with the solenoid valve 64 in a closed condition.

Provided is a method for producing a gas mixture that is produced in an iron mill and consumed as a fuel, and that, even when the generated amount of coke oven gas has become low, can be used continuously without upgrading an existing facility suitable for a conventional gas mixture. In the present invention, a first gas that is a secondary gas generated in an iron mill, a second gas that is a gas of which an index A indicating a discharge heat quantity is higher than that of a coke oven gas, and a third gas that is a gas of which an index B indicating a combustion speed is higher than that of the coke oven gas are mixed. Preferably, the coke oven gas is further mixed at a concentration of more than 0 vol% but less than 50 vol%.

The invention provides an ignition assembly, a natural gas incineration device and an LNG transport ship. The natural gas incineration device comprises a combustion chamber, and the ignition assembly comprises a supporting disc, a combustion head and an igniter. The supporting disc is connected to the combustion chamber and provided with an air inlet hole used for introducing combustion-supporting air into the combustion chamber. The combustion head is connected to the side, close to the interior of the combustion chamber, of the supporting disc, the peripheral side of the combustion head forms a grid-shaped pipe wall, the grid-shaped pipe wall comprises a plurality of grid rings, the grid rings are arranged in the axial direction of the ignition assembly, the adjacent grid rings are elastically connected and form a vacant part, and the vacant part is used for introducing BOG gas into the combustion chamber. The igniter is arranged on the side, close to the combustion chamber, of the supporting disc. According to the ignition assembly, the gas amount of the BOG gas entering the combustion chamber can be adjusted according to the working condition change of the BOG gas, so that combustion of the BOG gas and combustion-supporting air is more sufficient, the emission of the LNG transport ship reaches the standard, and the safety of the LNG transport ship is also improved.