219 results about "Fuel gasification" patented technology

The invention discloses a method for removing CO2 and H2S out of synthesis gas by utilizing an amine-type solid absorbent, belonging to the technical field of environment protection. The method is a technical progress of removing CO2 and H2S out of synthesis gas and biomass generated in coal gasification production or gasified products of other fuels, natural gas and the like by utilizing amine-type solid absorbent prepared from an organic amine loaded porous medium, wherein CO2 and H2S can be removed stage by stage to respectively obtain high-purity CO2 and high-purity H2S and also can be removed in a same reactor. The method has the advantages that process and equipment are simple and compact in integrated design, investment and operation cost is low, and operation is stable and reliable, and CO2 and H2S in the synthesis gas can be separated efficiently with low cost.

The invention relates to a process for gasifying water/gas mixed type partial chilling dry powder fuel and a special chiller thereof. The process resolves problems of poor cooling effect caused by only using water to chill high-temperature crude synthetic gases, no high-temperature resistance of spray throwers and easy corrosion and block of nozzles and pipes existing in dry powder fuel gasification process. Flammable dry powders are used as raw materials and undergo pressurized gasification, chilling and dust removal and cleaning; the crude synthetic gases at a temperature of between 180 and 260 DEG C, which are used for downstream operating processes, are obtained; and the cleaning ash water obtained enters an ash water treatment system; chilling steps are as follows: when gasified crude synthetic gases at a temperature of between 1400 and 1700 DEG C rise to the middle part and/or upper part of a gasifier, crude synthetic gases are partially chilled by water/gas mixed fog liquids as the temperature drops to between 400 and 500 DEG C, and then undergo the next step for dust removal and cleaning and simultaneously temperature dropping, and the cure synthetic gases at a temperature of between 180 and 260 DEG C are obtained. The process has the advantages of simple process, good temperature drop effect, abrasion resistance of a chilling device under the condition of high temperature, no ashes collection in nozzles and pipes and long-time effective operation, and can avoid safety accidents.

The invention discloses a three-channel slurry fuel gasification burner, which comprises an outer ring channel jet pipe, a middle ring channel jet pipe, a center channel jet pipe, an outer ring nozzle, a middle ring nozzle and a center nozzle that are coaxial. A slurry fuel enters a gasification furnace from a middle ring channel, and a gasification agent enters the gasification furnace from a center channel and an outer ring channel in two parts. The lateral sides of the center nozzle are provided with a lateral gasification agent jet orifice, along which the gasification agent can enter a middle ring channel from the center channel. The end face of the center nozzle is provided with an end face gasification agent jet orifice. At the center nozzle, the gasification agent is divided into a plurality of material flows, which are respectively jetted from the lateral gasification agent jet orifice and the end face gasification agent jet orifice of the center nozzle. The gasification agent jetted from the lateral gasification agent jet orifice contacts with the slurry fuel of the middle ring channel inside the head of the burner. And the slurry fuel also mixes with the gasification agent of the center channel and the outer ring channel at the outlet area of the burner, thus achieving a good atomization effect.

The invention relates to a process for gasifying water/gas mixed type full chilling dry powder fuel and a special chiller thereof. The process resolves problems of poor cooling effect caused by only using water to chill high-temperature crude synthetic gases, no high-temperature resistance of spray throwers and easy corrosion and block of nozzles and pipes existing in dry powder fuel gasification process. Flammable dry powders are used as raw materials and undergo pressurized gasification, chilling and dust removal and cleaning; crude synthetic gases at a temperature of between 180 and 260 DEG C, which are used for downstream operating processes, are obtained, and the cleaning ash water obtained enters an ash water treatment system; chilling steps are as follows: when gasified crude synthetic gases at a temperature of between 1400 and 1700 DEG C rise to the middle part or the upper part of a gasifier, crude synthetic gases are partially chilled by water/gas mixed fog liquids as the temperature drops to between 800 and 900 DEG C, and then are sent to a water bath type chiller by a pipe for soaking, dust removal and chilling; when the temperature drops to between 180 and 260 DEG C, the cure synthetic gases undergo next step for dust removal and cleaning. The process has the advantages of simple process, good temperature drop effect, abrasion resistance of the chilling device under the condition of high temperature, no ashes collection in nozzles and pipes and long-time effective operation, and can avoid safety accidents.

The invention discloses an alcohol group liquid fuel vaporizing combustor, and belongs to the field of heating equipment. The alcohol group liquid fuel vaporizing combustor comprises a fire distributor and a vaporizing pipe connected with the fire distributor, wherein the fire distributor is arranged in a combustion barrel, the vaporizing pipe is of a multi-coil densely arranged columnar structure formed by a metal pipe spirally and is arranged over the fire distributor, and a feeding pipe of the vaporizing pipe is located at the lowest position of the spiral and spirals upwards from the position of the fire distributor; a gas transmitting pipe of the vaporizing pipe vertically falls down from the highest position and is connected with the bottom of the fire distributor through a spraying nozzle connector; an ignition basin is arranged under the fire distributor; the fire distributor is composed of a fire distribution cover on the upper portion, a mixer in the middle and a base cover on the lower portion, the center of the fire distribution cover is sealed, and a plurality of gas spraying holes are formed in the periphery of the surface of the fire distribution cover. The alcohol group liquid fuel vaporizing combustor is automatically heated in the combustion process without a power source or other heat resources, the vaporizing process is uniform, combustion is stable, fire is large, the heating effect is good, no fuel flies out, blockage of the vaporizing pipe is avoided, and the alcohol group liquid fuel vaporizing combustor is convenient to use and popularize.

The invention relates to a mutually-cyclical solid fuel gasification device with double fluidized beds and a solid fuel gasification method. The method comprises the following steps: performing a pyrolysis gasification reaction between a solid fuel and a gas for fluidizations and reactions in a fluidized bed gasification reactor so as to generate a combustible gas, as well as solid coke and semicoke which are not subjected to incomplete pyrolysis gasification reaction, wherein the heat required by the pyrolysis reaction is obtained from high-temperature heat-carrying circulating bed materials; feeding the solid coke/the semicoke and the heat-carrying circulating bed materials with heat discharge into a pneumatic back-feeder through a cyclone separator or an overflow device according to a running state in the reactor; controllably sending the solid coke/the semicoke and the heat-carrying circulating bed materials into a combustion reactor; reheating the heat-carrying circulating bed materials due to the combustion of the solid coke/the semicoke in the combustion reactor; and refeeding the heated heat-carrying circulating bed materials into the gasification reactor through a back-feeding device so as to provide the heat for the pyrolysis gasification reaction. Thus, the device is gasified while the running parameters of the bubbling fluidization and the fast fluidization are adapted. As a result, the solid fuel gasification device provided by the invention has the good adaptability for various combustible solids; and the high running efficiency of the whole device is realized.

The invention relates to a mechanism movable grate biomass molded fuel gasification burning boiler. The boiler comprises a grate base, a grate and a primary air chamber. Two sides of the upper part of the grate base are provided with convective heat exchange tube bundles. A boiler barrel is arranged in the middle of the upper part of the boiler and the convective heat exchange tube bundles are arranged at the two sides of the boiler barrel. A fuel hopper arranged in the front part of the grate is provided with a fuel distributor which divides the lower part of the fuel hopper into a front fuel feeding channel and a rear fuel feeding channel, and a precombustion chamber is arranged between the front fuel feeding channel and the rear fuel feeding channel. The upper part of the grate is provided with a downward convex front arch and a curved rear arch, and the outlet of the downward convex front arch is positioned on the rear part of a lower boiler furnace. The curved rear arch is higher than the downward convex front arch. Walls on the two sides of the lower boiler furnace are provided with a row of secondary air blast pipes which are communicated with a secondary air duct. The boiler is suitable for burning biomass molded fuel, low in operation cost, high in thermal efficiency, low in exhaust dust concentration, and favorable for conservation and environmental protection.

The invention discloses an underground fuel gasification method, a gasifying agent delivery pipe and an underground fuel gasification system. The underground fuel gasification method comprises the steps of respectively and continuously delivering water and combustion-supporting gas to an underground fuel gasification reaction zone, atomizing the water delivered to the underground fuel gasification reaction zone by using pressure potential energy of water from the ground to the underground, mixing water vapor produced after atomization with the combustion-supporting gas delivered to the underground fuel gasification reaction zone to form mist gasifying agent, and producing fuel gas through gasification reaction between the mist gasifying agent and the underground fuel in the underground fuel gasification reaction zone by combustion and heating. The gasifying agent delivery pipe comprises a water delivery pipe and a gas delivery pipe. The underground fuel gasification system comprises an underground gasification furnace, the gasifying agent delivery pipe and an atomizing and mixing nozzle. The water and combustion-supporting gas can be mixed in the underground fuel gasification reaction zone to form the mist gasifying agent without using heat, the normalization and stabilization of the underground gasification process are realized, and the production cost is greatly reduced.

The purpose of the present invention is to reduce the cost of fuel gasification equipment for LNG and other liquefied gas. The methane component of LNG liquid inside a holding tank (21) is evaporated, turned into LNG gas, and discharged from the holding tank (21), by: supplying LNG liquid that has been heated by a heating unit (22), putting LNG liquid inside the holding tank (21) into a saturated state, opening a throttle valve (33); and reducing the pressure inside the holding tank (21). In addition, it is preferable that the accumulation of heavy components inside the holding tank is avoided by supplying some of the LNG liquid inside the holding tank (21) to a desuperheater (43), via a branch pipe (50).

A fuel gasification system including a gasification furnace including a fluidized bed formed by fluidizing reactant gas for gasifying fuel charged into gasification gas and flammable solid content, a combustion furnace for combustion of the flammable solid content into which the flammable solid content produced in the furnace is introduced together with bed material and that includes a fluidized bed formed by fluidizing reactant gas, a material separator such as hot cyclone that separates bed material from exhaust gas introduced from the combustion furnace, the separated bed material being fed through a downcorner to the gasification furnace, and a tar decomposing mechanism that heats the gasification gas produced in the furnace to decompose tar contained in the gasification gas.

The invention relates to a biomass briquette gasification direct combustion combustor, which comprises a furnace body and a bracket, wherein the furnace body is supported on the bracket; the bottom ofa furnace body is fixedly connected with a bottom support and the middle part of the bottom support is provided with a through hole; a circular fire grate is arranged on the upper part of the bottomsupport; the fire grate is plate-shaped and evenly provided with fire grate air holes and the lower part of the fire grate is connected with a fire grate rotating shaft; and a motor drives the fire grate rotating shaft, the upper part of the furnace body is connected with a cylindrical spray nozzle and the furnace body on the other side opposite to the spray nozzle is provided with a material loading opening. The special combustion mode ensures that biomass fuel is fully gasified and combusted, realizes high-efficiency energy-saving conversion of the biomass and has good energy-saving effect.The biomass briquette gasification direct combustion combustor has compact structure, small volume, great reduction of production cost and obvious environment-friendly effect.

The invention relates to a direct carbon fuel cell anode with dual electric catalytic functions, and belongs to the technical field of clean energy. The anode material is prepared by compounding nanoparticle as a conductive phase on the inner and outer parts of transition element-codoped CeO2 as a catalytic active phase of the anode and a porous framework. The prepared anode material has dual electrocatalysis effects on carbon fuel, can be used as an excellent ion conductor, transfers O<2-> generated by a cathode to the electrode surface and increases the electrode reaction active sites; the anode material can be applied to electrochemical oxidation of an intermediate catalytic carbon; and the power output of the cell is improved. The anode material disclosed by the invention is assembled into a direct carbon fuel cell for power generation, so that the three-phase interface length is prolonged; the fuel gasification reaction rate is improved; corrosion of molten carbonate to an electrolyte is avoided; and the lifetime of the cell is prolonged.

The invention discloses a system and method for utilizing ship LNG cold energy by a refrigerated container. The system mainly comprises a refrigerated container cold energy utilization system, a supply pipeline system and an LNG fuel supply system. When a ship sails on the sea, LNG fuel is consumed; a 50% ethylene glycol solution is used as a refrigerant to exchange heat with LNG fuel; a refrigerant for obtaining cold energy enters the refrigerated container heat exchanger through the liquid supply pipe, the quick coupling and the electromagnetic valve in sequence to release cold energy for refrigeration, therefore, the cold energy of the ship LNG fuel is used for refrigerating the refrigerated container; the consumption of a heat source in the LNG fuel gasification process can be reduced;the ship power grid load is reduced; the problem that the ship power grid load of a large LNG power container ship is huge due to refrigeration of a refrigerated container is solved; reasonable utilization of energy is achieved, the supply pipeline system and the refrigerated container utilization system are connected through a hose, a quick connector and the like, the problem that a movable refrigerating device cannot utilize LNG cold energy is solved, and the economical efficiency of a ship is greatly improved.

The invention provides a comprehensive garbage treatment method comprising the steps of primarily screening, separating, classifying materials to be processed, preparing renewable energy, and gasifying fuel, or the like. Without depending on the treatment manner of classified garbage collection, the provided garbage treatment method focuses on treating the decayed garbage with a massive treatment principle of 'combining a scattered manner with a centralized manner' being applied to the solid waste. The original ecological garbage and the decayed garbage are pre-processed in a small range, so as to generate a flammable renewable fuel; the flammable renewable fuel is collected in a large range, and is then gasified in a massive and centralized manner; the renewable substances and the non-renewable substances generated in the treatment are comprehensively utilized.

Provided is an environment-friendly energy-saving efficient gasification boiler. No chimney exists on small boilers or big boilers. Due to the fact that for all the boilers, the combustion method is wrong, and chimneys are designed, energy combustion is insufficient, carbonic oxide flue gas and dust microparticles pollute the atmosphere, and fuel is wasted; the boiler adopts a gasification principle, environmental protection design is achieved, no pollution exists, the manufacturing cost is low, and the operating cost is low. Coal, straw, low-grade fuel, garbage and waste combustibles serve as energy sources, and single combustion, mixed combustion and multi mixed combustion are conducted. Conventional energy is changed into efficient fuel through gasification, smoke produced in the gasification process is gas, straw gas and mixed combustible gas, secondary efficient combustion is conducted, thermal energy collection is thorough, water involved hot surface is all covered, the thermal efficiency reaches 99%, and for single use, energy conservation reaches 30% or above. The application is wide and contains livelihoods, industry, national defense and the like.

The invention provides fuel gasification combustion equipment and a fuel gasification combustion method. The fuel gasification combustion equipment comprises a fuel storage tank (1) used for storing a liquid fuel for gasification combustion, a gasifying device used for performing high-temperature gasification and gas-state delivery on the liquid fuel from the fuel storage tank (1), and a combustion device (10) used for combusting the gaseous fuel from the gasifying device. The fuel gasification combustion method comprises the following steps of: delivering the liquid fuel under a certain pressure to the gasifying device, performing high-temperature gasification on the liquid fuel in the gasifying device, and outputting the gaseous fuel resulting from high-temperature gasification under an increased pressure for combustion under a constant pressure or continuously-variable pressure.

The invention discloses a harmless recycling utilization system for kitchen oil fume and garbage. The harmless recycling utilization system comprises the following steps that (1) the kitchen oil fume is fed into an electrostatic oil fume purifier through a fume cover type fume suction purification cover and a flow equalizing convergence pipe, and then is fed into an exhaust air outlet through an exhaust fan and a silencing box; (2) solid garbage is crushed by a grinding machine, then is extruded into a solid-liquid separation conveying device and is thrown into a biochemical fermentation treatment machine to be made into primary fertilizer, and gas generated in the grinding and crushing process is fed into a gas purification cabinet communicating with an exhaust pipeline; and (3) liquid garbage is thrown into an oil-water separation device, the waste oil is directly collected into an oil tank after oil-water separation, biological diesel oil subjected to the methanol esterification treatment is combusted by a bio-fuel gasification furnace, a boiler is heated through a steam generator, and wastewater is uniformly fed into a wastewater treatment device for treatment. The harmless recycling utilization system is small in occupied area, high in recycling utilization rate, low in operation cost, high in safety and suitable for various places such as hotels, restaurants and mess halls.

The invention discloses a down-draft biomass fuel gasification furnace which belongs to the technical field of stoves. The down-draft biomass fuel gasification furnace comprises a gasification furnace body which is provided with a hearth and a fire grate at the bottom of the hearth, wherein a gas outlet cavity is formed between the inner wall of the gasification furnace body and the outer wall ofthe hearth; the hearth is provided with a drying region, a cracking region, an oxidation region and a reducing region from top to bottom; a gas outlet pipe, a gas guide mechanism and a carbon monoxide gas filtering mechanism which is used for filtering carbon monoxide gas and guiding the carbon monoxide gas to a combustor for combustion are arranged; one end of the gas outlet pipe is connected with the gasification furnace body and is communicated with the gas outlet cavity, and the other end of the gas outlet pipe is connected with the gas guide mechanism; and the gas guide mechanism is connected with the carbon monoxide gas filtering mechanism through a pipeline. The gasification furnace has the characteristic that: the internal diameter of the hearth is reduced to be less than the internal diameters of both the cracking region and the reducing region on the part corresponding to the oxidation region. The gasification furnace has the advantages of contributing to fully reducing the carbon dioxide gas into carbon monoxide gas, improving the purity of the carbon monoxide gas and preventing the hidden trouble of explosion of the gasification furnace body in case of backfire.

The invention discloses a high-efficiency non-coking solid particle fuel gasification combustor. The high-efficiency non-coking solid particle fuel gasification combustor comprises a gasification combustion core (1) and a sleeve (2) outside the core. The gasification combustion core (1) is tubular as a whole. A through cavity in the gasification combustion core (1) is divided into a combustion gasification chamber (11) and a fuel gas combustion chamber (12), and an opening in the bottom of the gasification combustion core (1) is an ash outlet (13) and is also a fuel combustion-supporting air inlet. An opening in the upper portion of the gasification combustion core (1) is a flame outlet (14) and is also a solid particle fuel inlet. The sleeve (2) outside the core is tubular as a whole, the gasification combustion core (1) is sleeved with the sleeve (2) outside the core, and an annular interlayer cavity between the gasification combustion core (1) and the sleeve (2) outside the core is an intake air preheating balancing chamber (22). Gas holes are formed in the gasification combustion core (1). Practice repeatedly proves that the problem that because fuel and fuel ash coke and become blocky in a fuel duct, the fuel duct is blocked will not be caused, and the combustor is high in efficiency, capable of saving energy, environmentally friendly and free of smoke.

The invention relates to an alcohol combustion stove. The alcohol combustion stove comprises a fuel flow adjusting device, a gasification ring and a direct injection pipe which are sequentially connected through pipelines; a three-way switching valve is arranged on the pipeline of the fuel flow adjusting device and the gasification ring, the output end of the fuel flow adjusting device is connected with the end a of the three-way switching valve through the pipeline, the end c of the three-way switching valve is connected with the input end of the gasification ring through the pipeline, the end b of the three-way switching valve is connected with a fuel atomization nozzle, and the fuel ejection direction of the fuel atomization nozzle faces the gasification ring; and a temperature detection device used for detecting the temperature of the gasification ring is arranged on the gasification ring. The alcohol combustion stove further comprises an ignition device used for igniting the fuelsprayed out through the fuel atomization nozzle. The invention further relates to a cold start ignition method of the alcohol combustion stove. The alcohol combustion stove is simple in structure, lowin manufacturing cost and good in fuel gasification effect.

A chemical looping combustion (CLC) based power generation, particularly using liquid fuel, ensures substantially complete fuel combustion and provides electrical efficiency without exposing metal oxide based oxygen carrier to high temperature redox process. An integrated fuel gasification (reforming)-CLC-followed by power generation model is provided involving (i) a gasification island, (ii) CLC island, (iii) heat recovery unit, and (iv) power generation system. To improve electrical efficiency, a fraction of the gasified fuel may be directly fed, or bypass the CLC, to a combustor upstream of one or more gas turbines. This splitting approach ensures higher temperature (efficiency) in the gas turbine inlet. The inert mass ratio, air flow rate to the oxidation reactor, and pressure of the system may be tailored to affect the performance of the integrated CLC system and process.

The invention discloses a liquid fuel gasification device. The device comprises at least two layers of spiral gasification coil pipes which are sleeved together in a laminating mode, wherein each spiral gasification coil pipe layer is provided with both a fuel inlet and a fuel outlet, in the adjacent two layers of the spiral gasification coil pipes, a fuel outlet of a spiral gasification coil pipe which is located in an outer layer is connected with a fuel inlet of a spiral gasification coil pipe which is located in an inner layer, and a heat source which is used for gasifying the liquid fuel is arranged in the center of a spiral gasification coil pipe which is located in the innermost layer. The invention also discloses a liquid fuel burner. The burner comprises the liquid fuel gasification device and a burning device, wherein a fuel inlet of the burning device is connected with a fuel outlet of the spiral gasification coil pipe which is located in the innermost layer. The liquid fuel gasification device can gasify the liquid fuel and has the advantages of being high in gasifying capacity and gasifying efficiency and being gasified fully, and the problem of carbon blockage during gasification is solved. The liquid fuel burner has the advantages of good in burning effect, high in burning efficiency and suitability for industrial application.