-
公开(公告)号：US4981724A
公开(公告)日：1991-01-01
申请号：US263487
申请日：1977-10-28
IPC分类号： C23C16/40 , H01L21/316
CPC分类号： C23C16/402
摘要： A chemical vapor deposition process for depositing silicon dioxide comprising the steps of heating a substrate upon which deposition is desired to a temperature of from about 325.degree. C. to about 700.degree. C. in a vacuum having a pressure of from about 0.1 to about 1.5 torr, and introducing a silane selected from the group consisting of alkylsilane, arylsilane and araylkylsilane wherein the alkyl-, aryl- or aralkyl- moiety comprises from 2-6 carbons, and oxygen or carbon dioxide into the vacuum.
摘要翻译： 一种用于沉积二氧化硅的化学气相沉积方法，包括以下步骤：在约0.1至约1.5的压力的真空中将需要沉积的基底加热至约325℃至约700℃的温度 并引入选自烷基硅烷，芳基硅烷和芳烷基硅烷的硅烷，其中烷基，芳基或芳烷基部分包含2-6个碳，氧和二氧化碳进入真空。
-
公开(公告)号：US12105502B2
公开(公告)日：2024-10-01
申请号：US18103766
申请日：2023-01-31
发明人： Sanjay Mehta , Pratik Misra
IPC分类号： G05B19/4155
CPC分类号： G05B19/4155 , G05B2219/32021 , G05B2219/41108
摘要： There is provided a method of controlling an industrial gas plant complex comprising a plurality of industrial gas plants powered by one or more renewable power sources, the method being executed by at least one hardware processor, the method comprising receiving time-dependent predicted power data for a pre-determined future time period from the one or more renewable power sources; receiving time-dependent predicted operational characteristic data for each industrial gas plant; utilizing the predicted power data and predicted characteristic data in an optimization model to generate a set of state variables for the plurality of industrial gas plants; utilizing the generated state variables to generate a set of control set points for the plurality of industrial gas plants; and sending the control set points to a control system to control the industrial gas plant complex by adjusting one or more control set points of the industrial gas plants.
-
公开(公告)号：US20240253982A1
公开(公告)日：2024-08-01
申请号：US18569464
申请日：2021-06-18
发明人： Vincent White , Andrew Shaw , Simon Craig Saloway
CPC分类号： C01B3/047 , C01B3/52 , C01B3/56 , C01B2203/0415 , C01B2203/043 , C01B2203/0495 , C01B2203/0811 , C01B2203/1294 , C01B2203/146 , C01B2203/148 , C01B2203/80
摘要： Reduction of the water content of ammonia used in an ammonia cracking process allows the use of water intolerant cracking catalysts. The water removal process can also be used to recover and recycle ammonia from the cracked gas.
-
公开(公告)号：US20240211980A1
公开(公告)日：2024-06-27
申请号：US18085675
申请日：2022-12-21
发明人： David M. Espie , Graeme Richard Wilson , Kevin Wright , David Hughes , Nicolaas Gilles van Luijk
IPC分类号： G06Q30/0202 , G06Q50/06
CPC分类号： G06Q30/0202 , G06Q50/06
摘要： A method of managing power in a power microgrid, the method comprising: generating, by the facility controller, time-dependent predicted power demand data representative of at least a predicted power demand of the industrial gas production facility for a predetermined time period; utilizing, by the power controller, the predicted power demand data to generate control set point values for controlling a generated power output of the one or more renewable power sources and for controlling a flow of electrical power to or from the energy storage resources, the control set point values being selected to adjust the available power as a function of time for the predetermined time period to correspond to the demanded power for the predetermined time period; and sending one or more control signals comprising the control set point values to the one or more renewable power sources and to the one or more energy storage resources.
-
公开(公告)号：US11998872B2
公开(公告)日：2024-06-04
申请号：US17498890
申请日：2021-10-12
发明人： Donald E. Henry
CPC分类号： B01D53/226 , B01D53/227 , C10L3/104 , C12M47/18 , B01D2256/245 , B01D2257/504 , B01D2258/05
摘要： A biogas upgrading system can include a multiple stage membrane system that is configured to remove oxygen so that the biogas is upgraded to have a higher concentration of methane, a pre-selected oxygen (O2) concentration (e.g. less than or equal to 0.2 mol %, etc.), and a pre-selected carbon dioxide (CO2) concentration (e.g. less than or equal to 5 mol %, etc.). The membrane system can be configured to reject O2 by utilizing a low CO2/O2 selectivity that is within a pre-determined range (e.g. less than 5 or less than 4.5). In some embodiments, the upgraded biogas that is output from the system can be entirely made up of methane, carbon dioxide, and oxygen. In other embodiments, the biogas can be almost entirely composed of these components along with a small amount of nitrogen and a trace amount (e.g. less than or equal to 0.2%-0.1%, etc.) of other components.
-
公开(公告)号：US20240166505A1
公开(公告)日：2024-05-23
申请号：US17990832
申请日：2022-11-21
CPC分类号： C01B3/047 , B01J8/0005 , B01J8/0415 , B01J8/062 , B01J2208/00176 , B01J2208/00274 , B01J2208/00283 , B01J2208/025 , B01J2208/065 , C01B2203/0277 , C01B2203/0811 , C01B2203/0866 , C01B2203/1058 , C01B2203/1064 , C01B2203/1205 , C01B2203/1258 , C01B2203/1294 , C01B2203/142 , C01B2203/1614 , C01B2203/1628
摘要： The present invention concerns a process for cracking ammonia comprising providing an ammonia-containing feed gas at a temperature of over 600° C. and a pressure in a range from about 5 bar to about 50 bar; combusting a fuel with an oxidant gas in a furnace to heat reactor tubes to achieve a maximum inner wall temperature of over 700° C. and produce a flue gas, each reactor tube comprising a catalyst bed comprising a first row transition metal-based catalyst; and feeding the ammonia-containing feed gas to the reactor tubes to produce a cracked gas at a temperature of over 600° C. on exit from the reactor tubes.
-
公开(公告)号：US20240125550A1
公开(公告)日：2024-04-18
申请号：US17968203
申请日：2022-10-18
发明人： Jay A. Thakkar , Donn Michael Herron , Qiao Zhao
IPC分类号： F25J3/04
CPC分类号： F25J3/04684 , F25J3/048 , F25J2200/06 , F25J2200/34 , F25J2200/40 , F25J2200/74 , F25J2270/42 , F25J2270/50
摘要： A process and apparatus for recovering at least argon from a feed gas that can provide an improved recovery of argon as well as an improvement in operational efficiency. Some embodiments can be adapted so that the improved argon recovery can also be obtained with improved condenser operation for an argon column without requiring an increase in power for the recovery of the argon. Some embodiments can utilize a reboiler positioned near or at the bottom of argon recovery column to increase boil-up therein and/or provide added heat duty to drive a condenser of the argon recovery column to provide improved argon recovery.
-
公开(公告)号：US20240109783A1
公开(公告)日：2024-04-04
申请号：US17956055
申请日：2022-09-29
IPC分类号： C01C1/04
CPC分类号： C01C1/0476
摘要： A process and apparatus for reducing wastewater generated during production of ammonia that can have different levels of production (e.g. ammonia production can vary from 10% to 100% production capacity, etc.) can be configured to minimize or eliminate wastewater from ammonia production. Embodiments can be adapted so that wastewater is stored in a vessel and providable to a scrubber used for processing an ammonia vapor containing stream so that ammonia within that stream can be recovered and mixed with other liquid ammonia product for subsequent storage or use. Embodiments can be implemented so the scrubber stream that may utilize a liquid to perform the scrubbing is recyclable in a way that minimizes or even eliminates formation of a wastewater stream, which can significantly improve process efficiency and provide improved environmental operation as compared to conventional approaches.
-
公开(公告)号：US20240009618A1
公开(公告)日：2024-01-11
申请号：US18199411
申请日：2023-05-19
CPC分类号： B01D53/62 , B01D53/75 , B01D53/50 , B01D53/96 , B01D2251/604 , B01D2257/302 , B01D2257/504 , B01D2258/0241 , B01D2258/0283 , B01D2259/80
摘要： An apparatus and process for use of an alkaline reagent (e.g. sodium hydroxide, NaOH, potassium hydroxide, KOH, etc.) to facilitate removal of carbon dioxide (CO2) from flue gas output from a glass melting operation. The CO2 removed from the flue gas can be in carbonates formed in the reaction of the reagent with the flue gas, which can be used in glass melting operations. A portion of the flue gas can also be liquefied in some embodiments to produce a liquefied CO2 stream for other uses. In some embodiments, a portion of the carbonate generated from the CO2 removal process can be heated (e.g. in an indirect heat exchange process) to liberate the CO2 for feeding the liberated CO2 to a liquefaction process while a resultant oxide formed via the CO2 liberation can be hydrolyzed to regenerate the alkaline reagent for subsequent use in the CO2 removal process.
-
公开(公告)号：US20240003618A1
公开(公告)日：2024-01-04
申请号：US18219808
申请日：2023-07-10
发明人： Mark Julian Roberts , Fei Chen
CPC分类号： F25J1/0025 , F25J1/0205 , F25J1/0072
摘要： Systems and methods are described for increasing capacity and efficiency of a nitrogen refrigerant boil-off gas recovery system for a natural gas storage tank. Boil-off gas is condensed against two-phase nitrogen in a condensing heat exchanger having an inner vessel through which the boil-off gas flows and an outer vessel through which the two phase nitrogen flows. Logic controls maintain storage tank pressure and power consumption within preferred levels by adjusting the pressure of the two-phase nitrogen in the heat exchanger. Additional logic controls maintain the temperature difference between the nitrogen streams entering into and returning from the cold end of a second heat exchanger by controlling the position of an expansion valve on the return circuit.
-
-
-
-
-
-
-
-
-
搜索结果
3765 条记录 (耗时 0.038 秒)
