摘要:
Embodiments disclosed herein provide hydrocarbon additives and methods of making and using the same. The additives are suitable for use in conjunction with gasifiers, furnaces, or other high-temperature vessels. The additives may be part of an input stream to a reaction vessel of a hydrocarbon gasifier. The additives may include materials that at least partially reduce the infiltration of slag into the refractory material.
摘要:
Methods and systems for decomposing ammonia in a gasifier are provided. The system includes a gasifier including a pressure vessel and an injection nozzle extending through the pressure vessel and including a nozzle tip at a distal end of the injection nozzle, the injection nozzle further includes a passage configured to direct a fluid stream including ammonia proximate the nozzle tip such that the fluid stream including ammonia facilitates reducing a temperature of at least a portion of the nozzle tip.
摘要:
A process for the treatment of a nuclear graphite contaminated with radioelements includes subjecting the graphite, immersed in a medium containing water, to high-voltage pulses. The pulses have sufficient energy for electric arcs to be initiated and to break the constituent bonds of the water molecules and the carbon-carbon bonds of the graphite. The number of high-voltage pulses is determined so as to convert the graphite into gas.
摘要:
The present invention relates to a method and apparatus for effectively utilizing thermal energy possessed by a high-temperature combustion gas discharged from a combustor and utilizing high-temperature oxygen contained in the high-temperature combustion gas discharged from the combustor. A fluidized-bed gasification apparatus for gasifying combustibles in a fluidized-bed furnace comprises a gasification furnace (2) for gasifying combustibles therein, and a combustion furnace (1) for combusting combustible components therein. The fluidized medium moves between the gasification furnace (2) and the combustion furnace (1), and exhaust gas discharged from another combustor is utilized as a fluidizing gas in the combustion furnace (1).
摘要:
A method produces a product gas rich in hydrogen. A starting material including carbon is split via pyrolysis, and the resulting gas is mixed with water vapor to increase the hydrogen content and heated. The heat necessary comes from the combustion of the produced pyrolysis coke. The heat necessary for individual process steps is fed via a heat transfer medium circuit having a heating zone heated via flue gas from the pyrolysis coke firing. The gas/water vapor mixture is subsequently heated in a reaction zone. The heat transfer medium heats the starting material in a pyrolysis zone indirectly, without directly contacting the starting material, is cooled in a cooling zone, and subsequently returns to the beginning of the circuit. Upstream of the heating zone, the heat transfer medium is preheated via the hot product gas.
摘要:
Apparatus for gasifying a solid fuel that supplies a solid fuel such as coal by dry condition to a gasification furnace of an entrained-bed type is constructed so as to be able to collect the char discharged from the gasification furnace and re-supply the char to the furnace without using a lock hopper and without changing the char into slurry form.The char discharged from the gasification furnace along with produced gases 53 produced in the gasification furnace is brought into contact with water by a gas cooler 9 and collected. After being dehydrated by a dehydrator 10, the collected char is loaded into a mill 2 or a raw-coal bunker 1. For loading into the raw-coal bunker 1, the char is dried by a drying machine 14, preferably, after the dehydration.According to the present invention, a mixture of the collected char and water can be re-supplied to the gasification furnace without using a lock hopper or a dry feeder. After being dehydrated, the char preferably is further dried and then supplied to the gasification furnace. Since a great deal of moisture is not supplied to the inside of the gasification furnace, it is possible to prevent a temperature of the gasification furnace from decreasing, and thus improve gas conversion efficiency.
摘要:
Continuous processes are provided for converting a carbonaceous feedstock comprising biomass containing alkali metal, non-biomass components, and at least one gasification catalyst including an alkali metal recovered from solid char, into a plurality of gaseous products including methane and at least one or more of hydrogen, carbon monoxide, and other higher hydrocarbons.
摘要:
The invention relates to a method and installation for producing liquid energy carriers from a solid carbon carrier by means of gasifying a solid carbon carrier. The installation is at least comprised of a drying device, a gasification apparatus, a synthesizing device for synthesizing the liquid energy carrier, a device for effecting the electrolysis of water for producing oxygen serving as a gasification agent and hydrogen for the synthesis process, and of a combustion apparatus, which is connected to the output of the gasification apparatus for carbon-containing gasification residues and to the oxygen outlet of the device for effecting the electrolysis of water. According to the invention, at least a portion of the waste steam from the drying device and at least a portion of the residual gas arising during synthesis are fed to the gasification process in the gasification apparatus. In addition, the carbon-containing residuals from the gasification apparatus and a portion of the oxygen produced in the device for effecting the electrolysis of water can be fed to a combustion apparatus, and the carbon dioxide-containing and oxygen-containing waste gas from the combustion apparatus can be fed to the combustion apparatus in the form of a gasification agent.
摘要:
The present invention provides a method of producing a synthesis gas from a regeneration of spent cracking catalyst. The method includes introducing a spent cracking catalyst into a first regeneration zone in a presence of a first oxygen and carbon dioxide atmosphere and at a first regeneration temperature. For example, a temperature that does not exceed about 1400° F., and more preferable a temperature that ranges from about 1150° F. to about 1400° F., may be used as the first regeneration temperature. The method further includes introducing the spent cracking catalyst from the first regeneration zone into a second regeneration zone in a presence of a second oxygen and carbon dioxide atmosphere, and producing a synthesis gas from cracking deposits located on the spent cracking catalyst within the second regeneration zone at a second regeneration temperature substantially greater than said first regeneration temperature. In a preferred embodiment, the second regeneration temperature ranges from about 1500° F. to about 1800°, and in a related embodiment is about 1800° F.
摘要:
The present invention provides a method of producing a synthesis gas from a regeneration of spent cracking catalyst. The method includes introducing a spent cracking catalyst into a first regeneration zone in a presence of a first oxygen and carbon dioxide atmosphere and at a first regeneration temperature. For example, a temperature that does not exceed about 1400° F., and more preferable a temperature that ranges from about 1150° F. to about 1400° F., may be used as the first regeneration temperature. The method further includes introducing the spent cracking catalyst from the first regeneration zone into a second regeneration zone in a presence of a second oxygen and carbon dioxide atmosphere, and producing a synthesis gas from cracking deposits located on the spent cracking catalyst within the second regeneration zone at a second regeneration temperature substantially greater than said first regeneration temperature. In a preferred embodiment, the second regeneration temperature ranges from about 1500° F. to about 1800°, and in a related embodiment is about 1800° F.