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1. 发明授权

US5174796A Process for the purification of natural gas 失效
标题翻译：天然气净化工艺
公开(公告)号：US5174796A
公开(公告)日：1992-12-29
申请号：US774020
申请日：1991-10-09
申请人： Mark M. Davis , Robert L. Gray, Jr. , Kirit Patel
发明人： Mark M. Davis , Robert L. Gray, Jr. , Kirit Patel
IPC分类号： B01D53/047
CPC分类号： B01D53/047 , B01D2253/102 , B01D2253/104 , B01D2253/106 , B01D2256/245 , B01D2257/102 , B01D2257/7025 , B01D2258/06 , B01D2259/40015 , B01D2259/4003 , B01D2259/40033 , B01D2259/40041 , B01D2259/40045 , B01D2259/40052 , B01D2259/40077 , B01D2259/4061 , B01D2259/4062 , B01D2259/414 , Y02C20/20
摘要： A process is provided for the purification of natural gas wherein the nitrogen content of natural gas is reduced to pipeline specification using a pressure swing adsorption processes with a suitable selective adsorbent for methane purification. More specifically, the present invention relates to the use of a particular combination of steps in the PSA cycle to produce a product natural gas having a reduced nitrogen content, a nitrogen-rich stream and a high heat content fuel gas stream.
摘要翻译：提供了一种天然气净化方法，其中天然气的氮含量使用适当的用于甲烷净化的选择性吸附剂的变压吸附方法降低至管道规格。更具体地，本发明涉及在PSA循环中使用特定的步骤组合来生产具有降低的氮含量的产物天然气，富氮流和高热量燃料气流。

2. 发明授权

US4476345A N-Paraffin-isoparaffin separation process using wash of recycle purge gas 失效
标题翻译：使用洗涤循环吹扫气体的N-烷烃 - 异链烷烃分离方法
公开(公告)号：US4476345A
公开(公告)日：1984-10-09
申请号：US434398
申请日：1982-10-14
申请人： Robert L. Gray, Jr. , Thomas C. Holcombe
发明人： Robert L. Gray, Jr. , Thomas C. Holcombe
IPC分类号： C07C7/13 , C10G25/03 , C10G25/00
CPC分类号： C10G25/03 , C07C7/13
摘要： An invention is described in which a portion of one of the product streams from an adsorption system is used to wash a recycle gas stream in order to improve the quality of one of the products.
摘要翻译：描述了一种发明，其中使用来自吸附系统的一种产物流中的一部分来洗涤循环气流，以便提高其中一种产品的质量。

3. 发明授权

US4709117A Total isomerization process and apparatus 失效
标题翻译：总异构化过程和装置
公开(公告)号：US4709117A
公开(公告)日：1987-11-24
申请号：US849064
申请日：1986-04-07
申请人： Robert L. Gray, Jr.
发明人： Robert L. Gray, Jr.
IPC分类号： C07C5/27 , C07C9/00 , C07C5/13
CPC分类号： C07C9/00 , C07C5/277
摘要： Disclosed are a process and apparatus for virtually complete isomerization of normal paraffin hydrocarbons which reduces recycle rates and enables operation of reactors and adsorbers at more favorable conditions and otherwise improve operating efficiencies based on constant quantities of adsorbents and catalysts. Also, and according to a preferred embodiment, a process and apparatus are provided for utilizing reformer offgas as a hydrogen makeup in such a process wherein the offgas is first purified by a pressure swing adsorption apparatus. Reactor and adsorber pressures and recycle rates can be lowered due to higher concentration of hydrogen in the recycle stream and higher reactant concentrations in the reactor. Recycle capital and operating costs are greatly reduced.
摘要翻译：公开了一种用于正常链烷烃的几乎完全异构化的方法和装置，其降低再循环速率并且能够在更有利的条件下操作反应器和吸附剂，并且基于恒定量的吸附剂和催化剂改善操作效率。此外，根据优选实施方式，提供了一种在这样的方法中利用重整器废气作为氢气补充的方法和装置，其中废气首先通过变压吸附装置净化。反应器和吸附器的压力和再循环速率可以由于再循环流中较高的氢浓度和反应器中较高的反应物浓度而降低。循环资金和运营成本大大降低。

4. 发明授权

US4693730A Pressure swing adsorption product purity control method and apparatus 失效
标题翻译：变压吸附产物纯度控制方法及装置
公开(公告)号：US4693730A
公开(公告)日：1987-09-15
申请号：US889795
申请日：1986-07-24
申请人： Geoffrey Q. Miller , Robert L. Gray, Jr.
发明人： Geoffrey Q. Miller , Robert L. Gray, Jr.
IPC分类号： C01B3/56 , B01D53/04 , B01D53/047
CPC分类号： B01D53/047 , B01D2256/16 , B01D2257/502 , B01D2259/40007 , B01D2259/40015 , B01D2259/4003 , B01D2259/40052 , B01D2259/40075 , B01D2259/40079 , B01D2259/40081 , B01D2259/404 , B01D2259/4516 , B01D53/0454
摘要： The present invention provides a method and apparatus for automatically controlling product purity in a pressure swing adsorption process without risking unacceptable impurity breakthrough as the feedstock changes, yet providing rapid response and high stability. The process comprises sensing a characteristic of the effluent from cocurrent depressurization, and taking corrective action responsive thereto. Any action can be taken which is effective to vary the impurity concentration in the product gas in the direction necessary to obtain desired product purity. Among the suitable corrective actions are the following: (1) adjusting the adsorption step time to control the impurity loading of each adsorbent bed; (2) adjusting the cocurrent depressurization termination pressure to control the impurity breakthrough at the product end of each adsorbent bed; and/or (3) adjusting the amount of purging gas received by each adsorbent bed to control the extent of regeneration.
摘要翻译：本发明提供了一种用于在变压吸附过程中自动控制产品纯度的方法和装置，而不会因原料变化而产生不可接受的杂质突破，同时提供快速反应和高稳定性。该方法包括检测来自并流减压的流出物的特征，并对其进行响应的校正动作。可以采取任何有效的方式来改变产物气体中获得所需产物纯度所需方向的杂质浓度。其中适当的纠正措施如下：（1）调整吸附步骤时间以控制每个吸附床的杂质负荷; （2）调节并流减压终止压力，以控制每个吸附床产品端的杂质穿透; 和/或（3）调节每个吸附床接收的净化气体的量以控制再生程度。

5. 发明授权

US4595490A Processing of high normal paraffin concentration naphtha feedstocks 失效
标题翻译：高正常石蜡浓度石脑油原料的加工
公开(公告)号：US4595490A
公开(公告)日：1986-06-17
申请号：US718368
申请日：1985-04-01
申请人： Robert L. Gray, Jr. , Peter L. Oetinger
发明人： Robert L. Gray, Jr. , Peter L. Oetinger
IPC分类号： C10G25/03
CPC分类号： C10G25/03
摘要： Normal paraffins present in high concentrations in light naphtha streams are separated from non-normal paraffins in a four or more bed adsorption system employing, on a cyclic basis, the processing steps of (1) cocurrent purge/adsorption, (2) cocurrent feed/adsorption, (3) countercurrent purge and (4) countercurrent displacement. A processing sequence is employed wherein the cocurrent purge/adsorption and countercurrent purge steps are carried out on a discontinuous basis, while cocurrent feed/adsorption and countercurrent displacement steps are carried out in overlapping sequence. Control means are provided to assure that the high normal paraffin-containing hydrocarbon feed gas and stripping gas are passed to the appropriate beds for said cocurrent purge/adsorption and countercurrent purge steps on a non-continuous basis, said feed gas being continuously fed to a mix drum for mixture with countercurrent purge effluent before removal for use in said cocurrent purge/adsorption step and in said cocurrent feed/adsorption step of the overall four-step process.
摘要翻译：在轻质石脑油流中以高浓度存在的正链烷烃在四个或更多个床吸附系统中与非正常链烷烃分离，其中循环使用（1）并流吹扫/吸附的加工步骤，（2）并流进料/ 吸附，（3）逆流吹扫和（4）逆流位移。采用其中以不连续的方式进行并流净化/吸附和逆流清洗步骤的处理顺序，同时进行交替的进料/吸附和逆流置换步骤以重叠的顺序进行。提供控制装置以确保高正态含石蜡的烃进料气和汽提气体在非连续的基础上被传送到合适的床以用于所述并流吹扫/吸附和逆流吹扫步骤，所述进料气体连续供给到混合鼓与用于所述并流吹扫/吸附步骤和整个四步骤过程的所述并流进料/吸附步骤中的逆流清洗流出物混合。

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