137results about "Fuel feeders" patented technology

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

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.

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.

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.

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.

The present invention provides a thermal energy generation system and method that can reduce the difficulty of separating carbon dioxide and impurities from exhaust gas after a combustion reaction, while making maximum use of existing combustion equipment. [Solution] The thermal energy generation system 10 comprises a water electrolysis device 20, a methanation device 30 that generates methane and water by reacting carbon dioxide with hydrogen produced in the water electrolysis device 20, a combustion device 40 that burns the methane discharged from the methanation device 30 using a combustion gas containing oxygen discharged from the water electrolysis device 20, and a CO2 distribution unit 55 that distributes and supplies the carbon dioxide discharged from the combustion device 40 to the methanation device 30 and the combustion device 40, respectively. The methanation device 30 carries out the methanation reaction using carbon dioxide from the CO2 distribution unit 55. The combustion device 40 carries out the combustion reaction by incorporating carbon dioxide from the CO2 distribution unit 55 into the combustion gas.

OBJECT To provide a metal heating furnace that burns ammonia while decreasing nitrogen oxides efficiently and a method of burning ammonia in the metal heating furnace. MEANS OF REALIZING THE OBJECT A metal heating furnace 10 includes a burner nozzle 31, plural injection nozzles 41, 42, 43 for ammonia, and a controlling unit 100. The burner nozzle 31 is provided on a furnace wall 11 and emits flame F, which is used to burn ammonia. The injection nozzles 41, 42, 43 for ammonia are provided on a ceiling wall 13 at intervals in a direction in which the flame F extends, and are used to eject ammonia in a direction perpendicular to the flame F. The controlling unit 100 optimizes an amount of ammonia ejected from each of the injection nozzles 41, 42, 43 for ammonia.

The utility model relates to the technical field of high-flash gas recovery, in particular to a gasification grey water high-flash gas recovery device which comprises a first condenser, a second condenser, a torch and a boiler. And a second treatment pipeline is fixedly communicated between the outlet of the second condenser and the first treatment pipeline. The device is reasonable and compact in structure and convenient to use, gasified grey water high-flash gas sent out by the high-pressure flash tank is condensed by the first condenser and then sent into the boiler for blending combustion of byproduct steam, the gasified grey water high-flash gas can be effectively recycled, the combustible gas byproduct steam rich in the gasified grey water high-flash gas is utilized, and the utilization rate of the byproduct steam is improved. The consumption of torch natural gas is reduced, the release of waste gas is reduced, and the environmental protection pressure is relieved.

A floating body provided with: a floating body main body; a tank which is provided in the floating body main body, and in which ammonia is stored and a mixed gas comprising ammonia and a gas other than the ammonia is stored as a gas phase fraction; a compression unit into which the mixed gas in the tank is introduced and the mixed gas is compressed; a separation membrane into which the mixed gas that has been compressed by the compression unit is introduced to separate the mixed gas into the ammonia and the gas other than the ammonia; and a cooling section which cools the ammonia that has been separated by the separation membrane and is put back into the tank.

In a gas turbine, the fuel flowing through the fuel nozzle is maintained at an appropriate temperature, making it possible to inject it into the combustion chamber of the combustor. [Solution] A fuel nozzle for injecting fuel into the combustion chamber of a gas turbine combustor, comprising: an air passage for circulating air supplied to the combustion chamber; a fuel passage for circulating fuel supplied to the combustion chamber; and an insulating structure disposed between the air passage and the fuel passage.

The invention discloses a boiler system, power generation equipment and a control method of the power generation equipment. An outlet of the mixed gas pipeline is connected with a first inlet of the boiler body, and the mixed gas pipeline is provided with a first valve, a first flow meter and a first calorific value instrument; an outlet of the blast furnace gas pipeline is connected with an inlet of the mixed gas pipeline; an outlet of the converter gas pipeline is connected with an inlet of the mixed gas pipeline, and a second valve is arranged on the converter gas pipeline; the controller is used for acquiring the required heat of the boiler body in unit time; and based on the required heat, the current detection flow of the first flowmeter and the current detection heat value of the first heat value instrument, the opening degree of the first valve and / or the second valve is adjusted, so that the actual heat provided by the coal gas in unit time of the boiler body reaches the required heat. The technical problem that the adjustment precision of the gas inlet amount of the coal gas in the boiler is low is solved.

A marine ammonia exhaust gas treatment system and coupled power generation system relate to the technical field of marine ammonia fuel supply systems. A mixture of ammonia and nitrogen generated on board enters an ammonia collection tank. The outlet of the ammonia collection tank is connected to both the ammonia inlet of the combustion chamber and the ammonia inlet of the pyrolysis chamber. The heat from the combustion chamber is supplied to the pyrolysis chamber. The exhaust outlet of the pyrolysis chamber is connected to the inlet of a gas separation device. The gas separation device includes a nitrogen outlet and a hydrogen outlet. The nitrogen outlet is connected to both an outlet and a nitrogen compressor. The outlet of the nitrogen compressor is connected to various nitrogen-using devices. The hydrogen outlet is connected to both the hydrogen inlet of the combustion chamber and a hydrogen compressor. The outlet of the hydrogen compressor is connected to various hydrogen-using devices, such as fuel cells, forming a coupled power generation system. This invention proposes a design concept for treating ammonia exhaust gas through combustion heating and ammonia pyrolysis, avoiding ammonia wastewater discharge and preventing waste.

To provide a steel material fusion-cutting device and a steel material fusion-cutting method which can perform gas fusion-cutting with 100% of hydrogen gas and easily adjust the burner height to a proper position.SOLUTION: A steel material fusion-cutting device comprises: an oxygen gas supply pipe which is connected with an oxygen gas supply source; a first pipe which is connected with a combustible mixed gas supply source; a second pipe which is connected with a hydrogen gas supply source; a combustion gas supply pipe which is connected with the first pipe and the second pipe via a switching mechanism; and a burner which is connected with the oxygen gas supply pipe and the combustion gas supply pipe. The switching mechanism can alternatively switch between the first state where the first pipe communicates to the combustion gas supply pipe and the second state where the second pipe communicates to the combustion gas supply pipe.SELECTED DRAWING: Figure 2

To provide a combustion apparatus and a heating cooker capable of preventing the discharge of gas causing uncomfortable feeling and uneasiness to users, even if heating power adjustment control operation is carried out by using a latch type solenoid valve.SOLUTION: A combustion apparatus 1 includes a burner 3, a gas supply path 24 that supplies fuel gas to the burner, a latch type solenoid valve 5 that opens / closes the gas supply path, igniting means 7 and 9 for burning the fuel gas supplied to the burner, and a control portion 6 that instructs the latch type solenoid valve to open and close and instructs the igniting means to ignite the fuel gas. The control portion 6 gives a continuous igniting instruction which repeats igniting instruction to the igniting means 7 and 9 under a predetermined condition after the valve closing instruction of the latch type solenoid valve 5, when performing heating-power regulating control operation which alternately repeats a combustion process in which the latch type solenoid valve 5 is opened by a valve opening instruction to instruct the igniting means 7 and 9 to burn the burner 3 and an extinction process in which the latch type solenoid valve 5 is closed by a valve closing instruction to extinguish the burner 3.SELECTED DRAWING: Figure 3

A gas supply device for the feed heater and thermal oil furnace of a naphtha hydrogenation unit is characterized by: a valve assembly installed on the inlet pipeline of the fuel gas separator; the inlet pipeline of the valve assembly is divided into two lines, one for natural gas and the other for the main fuel gas pipeline; the outlet pipeline of the fuel gas separator is also divided into two lines, one connected to the feed heater and the other connected to the thermal oil furnace. This invention, by adding a natural gas pipeline, switches the gas supply to the feed heater and thermal oil furnace to natural gas when flue gas indicators are abnormal, avoiding abnormal flue gas from the heater due to changes in fuel gas composition. This ensures stable operation of the unit and compliant flue gas emissions, meeting environmental protection requirements and reducing environmental risks for enterprises. It largely maintains the original structure of existing equipment, requiring no major modifications, and features low modification costs and high economic benefits.

To provide a method for operating a furnace that generates smoke at a temperature of at least 900°C.SOLUTION: A method includes: step (a) for burning fuel with an oxidizer, and generating thermal energy and smoke; step (b) for heating a furnace with a first part of the thermal energy generated in the step (a); step (c) for discharging the smoke generated from the furnace at a temperature of at least 900°C, the discharged smoke including a second part of the thermal energy generated in the step (a); and step (d) for using the second part of the thermal energy generated in the step (a) as a heat source for heating the oxidizer, and decomposing ammonia into a mixture containing hydrogen, nitrogen, and undecomposed ammonia in a decomposition device, at least part of the mixture generated in step (d-ii) being burned as fuel in the step (a) together with at least part of the oxidizer generated and heated in step (d-i).SELECTED DRAWING: Figure 2

The present invention provides a multi-fuel combustion fuel supply device equipped with a fuel supply system with a bypass fuel supply pipe, which is capable of easily adjusting the fuel flow rate while maintaining the calorific value ratio of each fuel at a set calorific value ratio for each fuel, and a fuel supply method for the multi-fuel combustion fuel supply device. [Solution] The multi-fuel fuel supply device (30) of the embodiment comprises: a hydrogen supply system (40) that supplies hydrogen gas to a combustion device (200), including a main fuel supply pipe (41) with a flow control valve (45) and a bypass fuel supply pipe (42) that has a flow control valve (46) and is connected to the main fuel supply pipe (41) bypassing the flow control valve (45); a city gas supply system (70) that supplies city gas to the combustion device (200), including a main fuel supply pipe (71) with a flow control valve (75) and a bypass fuel supply pipe (72) that has a flow control valve (76) and is connected to the main fuel supply pipe (71) bypassing the flow control valve (75); and a control device (90) for adjusting the flow rates of the hydrogen gas and the city gas.

This invention provides a system for pyrolysis, comprising: (i) a gas generator including a vaporization zone and a generator gas outlet, wherein the gas generator is configured to: oxidize at least one carbon-containing feedstock to form generator gas in the presence of an oxidizing gas in the vaporization zone; and discharge the generator gas from the vaporization zone through the generator gas outlet, wherein the residual oxygen content of the generator gas is substantially depleted or maintained below a maximum predetermined amount by controlling the ratio of oxygen to carbon-containing feedstock to the vaporization zone; and (ii) a pyrolyzer including a pyrolysis zone and one or more pyrolyzer gas outlets, wherein the pyrolyzer is configured to: discharge the generator gas from the vaporization zone through the generator gas outlet. The generator gas is fed into the pyrolysis zone; in the pyrolysis zone, the pyrolyzable organic feed is pyrolyzed in the presence of the generator gas to produce a carbonaceous pyrolysis product and a gas mixture, the gas mixture containing a combustible component, the combustible component containing pyrolysis gas; and the gas mixture is discharged from the pyrolysis zone through one or more pyrolyzer gas outlets, and (iii) a first burner comprising a combustion zone, wherein the first burner is configured to: receive the gas mixture discharged from the pyrolysis zone in the combustion zone; feed oxygen-containing gas into the combustion zone; and burn at least a portion of the combustible component present in the gas mixture in the combustion zone to produce combustion product gas.

The utility model relates to the technical field of combustors, in particular to a biomass hydrogen low-nitrogen combustor which can adjust the concentration of hydrogen, avoids explosion caused by overhigh hydrogen concentration, and is convenient to use and high in reliability and safety. Comprising a bottom plate and a low-nitrogen burner, the low-nitrogen burner is installed on the bottom plate, and an air inlet pipe is arranged on the low-nitrogen burner; the device further comprises a purification mechanism, a conveying mechanism and a gas concentration adjusting mechanism, the input end and the output end of the conveying mechanism are connected with the purification mechanism and the gas concentration adjusting mechanism respectively, the purification mechanism is used for purifying impurities in gas, the gas concentration adjusting mechanism is used for adjusting the concentration of hydrogen, and the output end of the gas concentration adjusting mechanism communicates with the gas inlet pipe.

The present invention relates, in various embodiments, to technology configured to enable improved management of fugitive emissions. For example, embodiments include hardware and processes which are applied thereby to manage variable methane content in gas mixtures (particularly those with inert gas content, for example nitrogen, carbon dioxide, argon, and the like), optionally for application in the context of coal mining and other such scenarios. However, it should be noted that the invention has broader application.

To provide a combustion apparatus and a heating cooker capable of preventing the discharge of gas causing uncomfortable feeling and uneasiness to users, even if heating power adjustment control operation is carried out by using a latch type solenoid valve.SOLUTION: A combustion apparatus 1 is equipped with a burner 3, a gas supply path 4 that supplies fuel gas to the burner 3, a latch type solenoid valve 5 that opens / closes the gas supply path 4, and a control portion 6 that instructs valve-opening or valve-closing of the latch type solenoid valve 5. The control portion 6 gives a continuous valve-closing instruction which instructs the latch type solenoid valve 5 to close valve repeatedly under a predetermined condition after the valve closing instruction of the latch type solenoid valve 5, when performing heating-power regulating control operation which alternately repeats a combustion process in which the latch type solenoid valve 5 is opened by a valve opening instruction to burn the burner 3 and an extinction process in which the latch type solenoid valve 5 is closed by a valve closing instruction to extinguish the burner 3.SELECTED DRAWING: Figure 3

The invention provides a one-dimensional reactor network system of an ammonia-doped combustion non-premixed combustor of a coal-fired power plant boiler. The ammonia-doped combustion non-premix burner one-dimensional reactor network system of the coal-fired power plant boiler comprises a first full-premix stirrer, a pre-combustion area, a second full-premix stirrer, a main combustion area, a third full-premix stirrer and a burnout area which are connected in sequence. The pre-combustion zone is a first plug flow reactor; the main combustion area is a full-stirring reactor; and the burnout area is a second plug flow reactor. According to the one-dimensional reactor network system for staged ammonia injection of the hearth of the ammonia-doped combustion boiler in the coal-fired power plant, a specific reactor is adopted to simulate a pre-combustion area, a main combustion area and a burn-out area; the device can well simulate and research the ammonia-coal co-combustion performance of a reaction network layer and the migration and conversion path mechanism of various components and elements under the condition that ammonia gas and pulverized coal are injected into an actual boiler according to different non-premixing proportions.

In a hydrogen boiler (3), hydrogen gas and oxygen gas supplied from a water electrolysis device (2), which generates the hydrogen gas and the oxygen gas by electrolyzing water, are combusted in a combustion chamber of the hydrogen boiler (3), and a water pipe of the hydrogen boiler (3) is heated, thus generating water vapor.

To reduce the cost of the whole fuel control device for a burner by reducing the number of devices installed in the fuel control device for the burner for supplying fuel to the burner.SOLUTION: A directional control valve 2 arranged in a feed line L11 to feed fuel to a burner is provided with a first inlet port 23 to which fuel enters, a second inlet port 24 to which inert gas enters, an outlet port 25 capable of outputting fuel and inert gas to the burner 5 and a directional control valve part. The switching valve portion switches between a first state in which the first input port 23 and the output port 25 communicate with each other and a second state in which the second input port 24 and the output port 25 communicate with each other. The switching valve 2 has a communication flow passage that constantly communicates the second input port 24 with the output port 25.SELECTED DRAWING: Figure 1

To provide an absorption chiller / heater that can continue operating even if a condition arises where an inert gas for purging the fuel piping cannot be supplied. [Solution] An absorption chiller / heater that transfers heat through a cycle between a refrigerant and an absorbent liquid includes a regenerator having a combustor 71 that burns a gaseous fuel F mainly composed of hydrogen to generate heat for heating the absorbent liquid, a fuel pipe 72 that leads the fuel F to the combustor 71, an inert gas pipe 76 that supplies inert gas N to the fuel pipe 72, an inert gas detector 78 that detects whether or not inert gas N can be supplied to the fuel pipe 72, and a control device 60 that controls the combustion operation in the combustor 71. When the inert gas detector 78 detects that inert gas N cannot be supplied to the fuel pipe 72 while the fuel F is burning in the combustor 71, the control device 60 controls the combustion operation in the combustor 71 so as to continue the combustion of fuel F in the combustor 71 until it receives a command to stop the absorption chiller / heater.

An injection nozzle 100 includes: an inner wall 101 having a cylindrical shape; a first outer wall 102 having a cylindrical shape and being formed integrally with the inner wall 101 through intermediation of a connection portion 107; a fuel passage 108 having an annular shape and being formed between the inner wall 101 and the first outer wall 102; and an inner air passage 104 formed on an inner side of the inner wall 101.

The utility model discloses a blending combustion system for coupling natural gas with biomass gas in a furnace kiln, which belongs to the technical field of biomass energy utilization and comprises a filtering device, a pressure regulating device, a purifying device, a first pressure stabilizing device, a gas mixing device, a second pressure stabilizing device, a flame arrester, the furnace kiln and an induced draft fan. According to the system, the natural gas and the biomass gas are coupled, mixed and combusted, the heat value defect of the biomass gas is overcome through the high heat value characteristic of the natural gas, the combustion temperature and heat efficiency of the kiln are guaranteed, the consumption of the natural gas can be reduced by mixing the biomass gas, the energy utilization efficiency and the environmental protection performance of the kiln are improved, and the fuel cost is reduced by more than 30%.