63results about How to "Large load adjustment range" patented technology

The present invention relates to a combustion device, and is aimed at providing a coal-water slurry gasification nozzle. It is characterized by forming central tube oxidant channel whose section is concentric ring-tubular structure, medium ring coal-water slurry channel and outer ring oxidant channel: the tail end of central tube oxidant channel is reducing-formed central tube nozzle, the medium ring coal-water slurry channel and outer ring oxidant channel are reducing-formed medium ring tube nozzle and outer ring tube spray head, the outer ring tube spray head is connected with atomizing head on which the jet orifices are uniformly distributed.

The invention relates to techniques of recovery of light hydrocarbon through separation of natural gas, and discloses a natural gas liquefying method and device with a light hydrocarbon recovery function. The natural gas liquefying method comprises the steps of pre-cooling, separating light hydrocarbon, liquefying natural gas, recovering the light hydrocarbon and the like, wherein C2<+> in feed gas is respectively extracted and separated into qualified products by a rectification and separation method, and a refrigeration technical process is circulated by utilizing a mixed refrigerant, so that the liquefication of the natural gas and the recovery of the light hydrocarbon can be realized in the same device. According to the natural gas liquefying method and device with the light hydrocarbon recovery function, which are disclosed by the invention, by aiming at an air source with larger moisture proportion in a natural gas liquefying device, the C2<+> light hydrocarbon is recovered while LNG (liquefied natural gas) is obtained through the liquefication, so that the quality of the LNG can regulated, the influence of C3<+> component left in the LNG on the safety operation of a device in a deep cooling section is reduced, and cheap and high-purity chemical materials can be obtained.

The invention discloses a thermodynamic system and a regulation and control method for rapid load responses of a heat supply unit. The technical problems that an existing thermodynamic system is poorin stability and high in cost are solved. The system is based on the heat supply unit, and the heat supply unit comprises a boiler, a high-pressure cylinder, a medium-pressure cylinder, a low-pressurecylinder and a generator which are sequentially connected. A medium-low-pressure communication butterfly valve is arranged between the medium-pressure cylinder and the low-pressure cylinder and is used for regulating the flow of steam entering the low-pressure cylinder. A heat supply steam outlet is formed between the medium-pressure cylinder and the medium-low-pressure communication butterfly valve, and a steam extraction butterfly valve is arranged on a steam extraction pipeline and is used for adjusting and controlling the flow of steam entering a heat supply network heater. The system isused for rapidly responding to AGC load instructions and primary frequency modulation instructions through the heat supply unit. The steam extraction device and a heat supply network system are adjusted through the heat supply unit, the instantaneous heat supply steam flow of the heat supply unit is quickly changed, and the instantaneous thermoelectric ratio of the whole unit is adjusted, so thatthe quick responses to power generation loads of the unit are achieved.

The invention discloses a waste heat recovering efficient gas stove. A hot air tube (9) for supplying air and matched with a gas tube (7) is arranged on a stove body (5), a hearth of the stove body (5) is provided with a porous ceramic medium (6) covering the gas tube (7) and the hot air tube (9) to form a combustion chamber, a smoke recovering channel (18) is formed between a side wall of the porous ceramic medium (6) and a hearth side wall of the stove body (5), a cooker can seal a hearth port when placed on the hearth port, a heat exchange tube (4) is arranged in the stove body (5), an air blower (1) is connected with an air inlet of the heat exchange tube (4), an air outlet of the heat exchange tube (4) is connected with the hot air tube (9), a smoke inlet of the heat exchange tube (4) is connected with a smoke recovering channel (18), and a smoke outlet of the heat exchange tube (4) is connected with a chimney (3). The waste heat recovering efficient gas stove can effectively improve heat efficiency, reduce pollutant discharge and improve chef working environment.

The invention discloses a stable combustion device for pulverized coal ignition, which comprises a primary air pipe, a flow guide sleeve, pulverized coal concentrator and a guide pipe as well as an ignitor, wherein pulverized coals pass through the primary air pipe, the flow guide sleeve, the pulverized coal concentrator and the guide pipe are arranged in the primary air pipe in sequence, and the ignitor is radially arranged at an outlet of the primary air pipe. A rotational flow blade capable of rotational liquid jet is arranged between the guide pipe and the inner wall of the primary air pipe; and a secondary air duct formed by a secondary air pipe is arranged outside the primary air pipe and an expanding primary air pipe. In the structure, a central recirculation region is formed behind the adjustable rotational blade; the ignitor is close to a low-speed central recirculation region to form a continuous and stable intensified heat source, thus the intensified heat source can be used as an ignition heat source required by the ignition of pulverized coal air flow so as to reduce the generation of NOX (nitric oxide) in the furnace effectively, and challenges caused by operation factor interferences and the substantial vibration of coal quality which occur suddenly can be dealt with. Therefore, the combustion device is suitable for pulverized boilers for burning various coals, not only can be used as a stable ignition combustion device, but also used for the operation of a main combustor.

A diffusion type porous medium gas fuel combustor comprises a shell, an air duct and a fire-resistant casing pipe, the air duct is connected with the shell, the bottom end of the shell is connected with the top plate of a gas flow dividing tank, the shell is internally provided with the fire-resistant casing pipe, a tray and a gas flow dividing tube from top to bottom, the bottom end of the fire-resistant casing pipe is contacted with the tray, the tray is fixed on the shell or the gas flow dividing tube, the bottom end of the gas flow dividing tube is fixed on the top plate of the gas flow dividing tank, and the gas flow dividing tube and the gas flow dividing tank are communicated internally; the fire-resistant casing pipe is provided with macro porous medium, micro porous medium and lower layer metal fiber from top to bottom, and the lower layer metal fiber is connected with the tray and the gas flow dividing tube simultaneously. The inventive diffusion type porous medium gas fuel combustor can be used for efficiently avoiding tempering when combustion intensity is stronger, thus achieving the effects of protecting micro porous medium and saving energy.

The invention discloses a partially premixed gas fuel burner of a bi-layer porous foamed ceramic plate. The partially premixed gas fuel burner comprises a shell, a macroporous foamed ceramic plate, a microporous foamed ceramic plate, a top air distributor and a bottom air distributor, wherein the shell comprises a cooling cavity in an annular structure and a shell base-plate arranged on the cooling cavity, the cooling cavity is provided with a cooling cavity used for providing secondary air to pass through, and the bottom of the cooling cavity is provided with a secondary air inlet communicated with the cooling cavity; the inner side wall of the cooling cavity is provided with a secondary air outlet communicated with the cooling cavity, an annular frame formed by the cooling cavity is sequentially provided with the macroporous foamed ceramic plate, the microporous foamed ceramic plate and the top air distributor from top to bottom; the bottom air distributor and a shell base-plate, the secondary air outlet is located between the microporous foamed ceramic plate and the top air distributor, and the shell base-plate is provided with a mixed gas inlet for providing mixed gas of fuel and air to enter. According to the burner provided by the invention, the heating efficiency can be improved, and the heating uniformity can be improved.

The invention provides a molten salt electrode boiler heat storage and power generation system, and belongs to the field of energy storage. The system involves a heating part, a high-temperature molten salt storage tank and a heat utilization part; the heating part comprises a boiler body, a high-voltage electrode, a neutral electrode and a low-temperature molten salt supply head, wherein the high-voltage electrode, the neutral electrode and the low-temperature molten salt supply head are arranged in the boiler body, the high-voltage electrode is used for being connected with a power generation system, and the low-temperature molten salt supply head is used for filling the boiler body with low-temperature molten salt; one end of the high-temperature molten salt storage tank is connected with the bottom of the boiler body, and the other end of the high-temperature molten salt storage tank is connected with the heat utilization part; and the heat utilization part is used for carrying outheat exchange on the molten salt sent out by the high-temperature molten salt storage tank and a water working medium for pushing the steam turbine to act, and sending the cooled molten salt back tothe boiler body. Wind power photovoltaic curtailed electricity is used for heating the molten salt and storing heat in the off-peak period of electricity utilization, and high-temperature molten saltis used for heating feed water to generate high-temperature and high-pressure steam in the peak period of electricity utilization, so that the steam turbine is pushed to act, he stored heat is converted into electric energy to be output, and the curtailed wind and light can be effectively consumed to realize large-scale storage and scheduling of non-water renewable energy power.

The invention relates to a multi-channel reverse injection type swirl single cone combustor and a use method thereof. The combustor comprises a pulverized coal supply mechanism, a transition channel,a multi-stage air distribution assembly, diversion plates, a stable combustion cavity and a rectifying cavity; the multi-stage air distribution assembly comprises N air ducts, the N air duct is connected with the stable combustion cavity and the rectifying cavity in sequence to form a combustor body, the pulverized coal supply mechanism penetrates through the inner part of the combustor body,and the transition channel sleeves the pulverized coal supply mechanism; except for the N air duct, the other air ducts are of double-layer hollow structures, and one end of at least one diversionplate is inserted into the corresponding air duct; at least one direct current channel is formed between each diversion plate and the stable combustion cavity, flaring is formed in the other end of each diversion plate, and the angle of the flaring is the same as the angle of the stable combustion cavity. The combustor adopts the design of the multi-stage air distribution assembly, air is dividedinto N strands to enter the combustor body, and the turbulence intensity at the airflow boundary is strong, so that the air and powder mixing rate is strengthened, pulverized coal ignites stably, andhigh-efficiency and low-nitrogen combustion of the pulverized coal can also be guaranteed.

The invention discloses a device and a technology for poly-generation of carbon, heat and electricity based on biomass gasification. The technology comprises steps of biomass transport, biomass gasification, boiler processing, electricity generation, desulphurization and dust removal. A large-dip-angle belt is adopted to perform continuous automatic feeding for biomass transport; a composite gasification fixed bed gasification technology with combination of upper and lower suction is adopted for biomass gasification, and a byproduct is a carbonized material; steam produced by a boiler after burning of gasified gas enters a steam turbine for generating electricity and then passes through a heat exchange station for providing a heat source for heating; a scattering tower based desulphurization and dust removal integration technology is adopted for desulphurization and dust removal. The device and the technology have the advantages of being environmentally friendly and safe and realizingpoly-generation of carbon, heat and electricity.

The invention discloses a combustion method of low-concentration combustible gas, which comprises the following steps of: firstly, introducing the low-concentration combustible gas and combustion-supporting air respectively into a heat exchanger for heat exchange; then introducing the low-concentration combustible gas and the combustion-supporting air after the heat exchange into a mixing cavity of a fluidized reactor for mixing; then introducing the mixed gas into a combustion cavity of a combustor through an air distributor for combustion; and taking the combusted gas as a heat source of the heat exchanger. The invention also provides the fluidized reactor to realize the method. The invention can not only enable the low-concentration combustible gas to be ignited reliably and combusted stably, but also ensure small temperature fluctuation inside the fluidized reactor; the combustion cavity can be used as both a reactor and a heat accumulator; the fluidized reactor has a wider loading adjusting range when working under ordinary pressure, and the mixed gas can keep combusting when the concentration of combustible components is higher than 2 percent; therefore, the invention is suitable for the combustion of the low-concentration combustible gas.

The invention discloses a temperature-adjusting type waste heat boiler. The temperature-adjusting type waste heat boiler comprises a boiler barrel, a superheater, a high-temperature evaporator, a temperature-adjusting water heater, a low-temperature evaporator, a coal economizer, a water heater, an inlet flue, a body flue, an outlet flue, a pollutant assisting-removal device and a tail flue. The temperature-adjusting type waste heat boiler has the beneficial effects that a denitration device in a transition flue and the tail pollutant assisting-removal device are adopted for the temperature-adjusting type waste heat boiler, pollutants in flue gas can be effectively lowered, ultra-low emission is achieved, meanwhile, the temperature-adjusting type waste heat boiler can adapt to a complicated flue gas work condition, and the load adjusting range is wide.

A rotor-type air lock system for continuously conveying solid material from low-temp and -pressure environment into high-temp and -pressure one is composed of a casing consisting of a cylindrical body with top feeding inlet and bottom discharging outlet and two end covers, and a rotor in said casing and consisting of a rotary axle, several blades and two baffle rings, which are welded onto said rotary axle, and several wide friction plates installed to the top of said blades for using surface friction sealing to replace line sealing.

The invention provides a hot water recirculation system for waste heat recovery of flue gas, and belongs to the technical field of thermal power energy conservation. The hot water recirculation systemis characterized in that heaters and a flue gas waste heat recovery heat exchanger are connected in parallel to access an adjusting valve; a gate valve and a booster water pump are additionally arranged, and the adjusting valve ensures that condensed water flow entering the flue gas waste heat recovery heat exchanger when an extracting and condensing steam turbine is operated under the steam extraction working condition is stable; a bypass valve is arranged at the booster water pump, the booster water pump does not operate when the steam turbine is in a pure condensing condition, the bypass valve is opened, the system relies on the unit condensation water pump margin to form an open cycle, the power consumption of the system can be reduced, and the power supply coal consumption is reduced; and after the flue gas waste heat recovery heat exchanger is added, an air heater is additionally arranged, so that the flue gas waste heat recovery system realizes multiple modes of operation, theload regulation range is large, and the unit adaptability is good. According to the hot water recirculation system, the waste heat recovery rate of the smoke exhaust is improved, the initial investment of the equipment is reduced, the adjustment is flexible, the energy-saving effect is remarkable, and the engineering implementation difficulty is reduced.

The invention discloses a load locking and adjusting improved constant force spring support hanging bracket. The load locking and adjusting improved constant force spring support hanging bracket comprises a front end plate, a spring cover barrel, an outer frame, a rotation frame, a pull rod, a spindle, a tail end plate, a spring pull rod, a guiding sleeve and a load adjusting nut. One side face of the front end plate is fixed to the end face of one end of the spring cover barrel, and the outer frame is fixed to the other side face of the front end plate. The end portion of the rotation frame is located in the outer frame. The spindle penetrates the outer frame and the rotation frame to connect the outer frame with the rotation frame. The tail end plate is located in the other end of the spring cover barrel. A spring is arranged in the spring cover barrel, one end of the spring pull rod is connected with the guiding sleeve, and the other end of the spring pull rod penetrates the outer frame and then penetrates the front end plate, the spring and the tail end plate to be connected with the load adjusting nut. The guiding sleeve and the rotation frame are connected through a load bolt. The support hanging bracket is convenient to lock, the load adjusting range is wide, and load adjustment is convenient.

The invention discloses a flame denitration combustor device. The device comprises a flame cavity, a combustion head and a material nozzle, wherein the combustion head communicates with the flame cavity and used for introducing mixed gas of fuel gas and air into the flame cavity, the mixed gas is ignited and combusted in the flame cavity and generates high-temperature gas, the flame cavity is provided with a combustion gas outlet, the combustion gas outlet is formed in the end, away from the combustion head, of the flame cavity, a penetrating inner hole is formed in the center of the flame cavity, the material nozzle is arranged in the penetrating inner hole of the flame cavity, penetrates through the flame cavity and is used for circulating uranyl nitrate, and a position of an outlet of the material nozzle and a position of the combustion gas outlet are at the same end of the flame cavity, so that the uranyl nitrate sprayed by the material nozzle can make contact with the high-temperature gas discharged from the combustion gas outlet to perform a denitration reaction. The invention further discloses a flame denitration system comprising the flame denitration combustor device. According to the device, stable operation of the uranyl nitrate denitration reaction can be ensured.

The invention is a composite bed type low range circulating fluid bed boiler. A tower structure is used; multiple layers of fluid bed combustion chambers are installed along the height of a furnace chamber; the combustion chambers are internally provided with embedded pipe heating surfaces; each layer of combustion chambers can independently run; and low fluid wind speed is used for reducing abrasion of flame retardant coating and heating surface and reducing the operation power consumption of the boiler. A reheater, a superheater and a coal economizer are respectively installed inside the furnace chamber. The upper part of the outlet of the boiler furnace chamber is provided with a horizontal air preheater, and a low-temperature gas-solid cyclone separator is installed at the rear of the horizontal air preheater; fly ash matters separated are fed in a return conveyor of fly ash matters through a ash bucket and feed legs thereof, and are then fed in the fluid bed combustion chambers so as to form circulating combustion of fly ash. The fly ash matters separated from the low-temperature cyclone separator is very low, and the problems of reburning scorification and blockage of feeding material cannot occur, thereby greatly improving the reliability of fly ash circulating system.

The invention provides a solar thermal power generation system of an integrated double-hearth biomass boiler. The solar thermal power generation system comprises a solar heat collection subsystem, a double-hearth biomass combustion subsystem and a power generation subsystem. The double-hearth biomass boiler is adopted, so that the system reliability and safety are improved. Solar energy and biomass energy supplement each other to achieve power generation, the power generation efficiency is improved, zero emission of carbon is achieved in the whole cycle period, and high efficiency and cleanliness are achieved in the power generation process.

The invention discloses a combined fluidized bed biomass boiler which comprises a hearth, a secondary air pipe, a water cooling pipe, a fluidized bed and a tempering preventing feeding device. The tempering preventing feeding device comprises a feeding pipe and a jacket, and an air supply interlayer is formed between the jacket and the feeding pipe. The combined fluidized bed biomass boiler is low in tempering accident rate, and multiple kinds of fuel can be combusted at the same time. The load adjusting range is wide, the environmental protection performance is excellent, emissions of NOx and SO2 are effectively controlled, and the national emission standard is met. Heat conduction in the boiler is even, high heat accumulation performance is achieved, the heat recovery efficiency is high, and a recovery heat source is stable. The recyclability of ash residues is high.

The invention discloses a coal slime treatment method. The treatment method comprises the following steps: enabling coal slime to enter a reactor and be in contact with temperature-regulating medium particles in the reactor, carrying out a reaction under the effect of fluidizing air, performing separating treatment on the reacted flue gas, separating the large-size temperature-regulating medium particles taken out by the flue gas, returning to the reactor, and performing subsequent treatment on ground fine powder of small-particle coal slime and temperature-regulating medium particles in a flyash form along with the flue gas. According to the coal slime treatment method disclosed by the invention, due to use of the temperature-regulating medium particles in the reactor, a stable coal slime temperature is provided, coal slime reduction, innocent treatment and high-efficiency resource utilization can be realized, oxidation burning can be performed by taking pure coal slime as the raw material for recovering the heat, and the coal slime oxidation efficiency and thermal efficiency of the device are high.