Abstract:
The present disclosure relates to a high-pressure reactor for continuous hydrolysis of lignocellulosic biomass and a method for continuous high-pressure pretreatment. The present disclosure is very useful in continuous high-temperature, high-pressure steam explosion and hydrolysis of biomass because the surface area can be increased and the aspect ratio (fiber width/fiber length) can be decreased through quick hydration and abrasion and various crushed lignocellulosic biomass having different properties can be continuously injected into the high-pressure reactor, regardless of the kind of biomass.
Abstract:
A method of forming polycrystalline diamond includes encapsulating diamond particles, carbon monoxide, and carbon dioxide in a container. The encapsulated diamond particles, carbon monoxide, and carbon dioxide are subjected to a pressure of at least 4.5 GPa and a temperature of at least 1400°C to form inter-granular bonds between the diamond particles. A cutting element includes polycrystalline diamond material comprising inter-bonded grains of diamond. The polycrystalline diamond material is substantially free of graphitic carbon and metallic compounds. The polycrystalline diamond material exhibits a density of at least about 3.49 g/cm 3 and a modulus of at least about 1000 GPa. An earth-boring tool may include such a cutting element secured to a body.
Abstract translation:形成多晶金刚石的方法包括将金刚石颗粒,一氧化碳和二氧化碳包封在容器中。 将包封的金刚石颗粒,一氧化碳和二氧化碳经受至少4.5GPa的压力和至少1400℃的温度以在金刚石颗粒之间形成颗粒间结合。 切割元件包括多晶金刚石材料,其包含金刚石的互相结合的颗粒。 多晶金刚石材料基本上不含石墨碳和金属化合物。 多晶金刚石材料表现出至少约3.49g / cm 3的密度和至少约1000GPa的模量。 钻孔工具可以包括固定到主体上的这种切割元件。
Abstract:
A pressure cycling system includes a reaction chamber configured to receive a sample and a charge pump in fluid communication with the reaction chamber. The charge pump is operable to convey a fluid from a fluid source toward the reaction chamber. The system also includes a check valve disposed between the charge pump and the reaction chamber. The check valve is operable to inhibit the flow of fluid from the reaction chamber toward the charge pump. A pressure intensifier is in fluid communication with the reaction chamber. The pressure intensifier is pneumatically operable to adjust a pressure in the reaction chamber. A controller is configured to control operation of the charge pump and the pressure intensifier. The controller is configured to pressurize the reaction chamber to a first pressure through operation of the charge pump. The controller is also configured to fluctuate the pressure in the reaction chamber between a second pressure and a third pressure through operation of the pressure intensifier.
Abstract:
A pressure cycling system includes a reaction chamber configured to receive a sample and a charge pump in fluid communication with the reaction chamber. The charge pump is operable to convey a fluid from a fluid source toward the reaction chamber. The system also includes a check valve disposed between the charge pump and the reaction chamber. The check valve is operable to inhibit the flow of fluid from the reaction chamber toward the charge pump. A pressure intensifier is in fluid communication with the reaction chamber. The pressure intensifier is pneumatically operable to adjust a pressure in the reaction chamber. A controller is configured to control operation of the charge pump and the pressure intensifier. The controller is configured to pressurize the reaction chamber to a first pressure through operation of the charge pump. The controller is also configured to fluctuate the pressure in the reaction chamber between a second pressure and a third pressure through operation of the pressure intensifier.
Abstract:
The invention relates to a method and a device for carrying out chemical and physical processes. The aim of the invention is to be able to carry out such processes with better results and in the same apparatus. To this end, for the initiation of chemical or physical processes the invention provides for at least two liquid media to be injected by means of pumps, preferably high-pressure pumps, into a reactor chamber (5) enclosed by a reactor housing (53) and on to a shared collision point (25), each medium being injected through one nozzle (1). Through an opening (3a) in the reactor chamber a gas, an evaporating liquid, a cooling liquid or a cooling gas is introduced so as to maintain the gas atmosphere in the reactor interior, notably in the collision point (25) of the liquid jets, and to cool the resulting products. The resulting products and excess gas are removed from the reactor housing (53) via a further opening (3) by positive pressure on the gas input side or negative pressure on the product and gas discharge side.
Abstract:
A method of and an apparatus for recovering a rare gas, capable of efficiently recovering a rare gas discharged from equipment using the rare gas, stably supplying the rare gas of a predetermined purity to the same equipment and reducing the consumption of the rare gas, wherein, when the rare gas in an exhaust gas discharged from the rare gas-using equipment operated under vacuum is recovered, the introducing of the exhaust gas into a recovery system is switched to/from the discharging of the same gas to an exhaust system under a vacuum condition, this switching operation being carried out in accordance with the concentration of the impurity components contained in the exhaust gas and the operational condition of the rare gas-using equipment.
Abstract:
A method of producing carbohydrate complexes and/or hydrocarbon complexes from organic material(s) which comprises the steps of (i) preparing a dense mixed phase of organic particulate materials entrained with a gas (such as steam) [the entraining gas being preferably less than 1 % by weight of the total dense mixed phase and the entraining gas preferably not reacting with the organic particulate materials under the chosen operating conditions]; (ii) mixing the organic material(s) as dense mixed phased entrained particulate material(s) with a (preferably gaseous) heat transfer medium which is at an elevated temperature and allowing pyrolytic and/or thermochemical conversion to occur at elevated pressure(s) and temperature(s) to produce and oil/gas phase, and (iii) rapidly reducing the temperature of the oil/gas phase from step (ii) without any substantial mixing with a coolant to produce the carbohydrate complex(es) and/or hydrocarbon complex(es). The steps (ii) and (iii) are performed in a total time of less than or equal to 10 seconds (preferably less than 4 seconds).
Abstract:
A process for ammonia and methanol co-production in a plant comprising a secondary reformer section, a high-temperature CO conversion section and a low-temperature CO conversion section, arranged in series, and an ammonia synthesis section, is distinguished by the fact that the unreacted gas flow coming from a methanol synthesis section, before being fed to the low-temperature CO conversion section, is advantageously saturated with a liquid flow comprising H2O appropriately heated by indirect heat exchange with a gaseous flow coming from the secondary reformer section.