公开(公告)号：US5231837A

公开(公告)日：1993-08-03

申请号：US775581

申请日：1991-10-15

Applicant: Bao Ha

Inventor： Bao Ha

IPC: F02C20060101 ,  F02C6/10 ,  F02C6/18 ,  F22B20060101 ,  F22B1/18 ,  F25J20060101 ,  F25J3/02 ,  F25J3/04

CPC classification number: F25J3/046 ,  F02C6/10 ,  F25J3/04303 ,  F25J3/04448 ,  F25J3/04575 ,  F25J3/04606 ,  F25J3/04872 ,  F25J2200/20 ,  F25J2200/50 ,  F25J2200/54 ,  F25J2215/50 ,  Y10S62/915 ,  Y10S62/939

Abstract: A cryogenic distillation process for the production of oxygen and nitrogen is provided, which entails:a) providing a feed stream of clean, dry and compressed air,b) cooling at least a fraction of the compressed air and introducing the same into a high pressure column, and separating the same into nitrogen-rich stream at the top of the column and an oxygen-rich stream at the bottom of the column, wherein the overhead of the high pressure column exchanges heat with both the bottom of the low pressure column and the bottom of an intermediate column,c) introducing at least a fraction of the oxygen-rich stream into the intermediate column to afford a top liquid fraction A and a bottom liquid fraction B, the overhead of the intermediate column exchanging heat with the low pressure column at a location above the bottom reboiler of the low pressure column, wherein the pressure of the intermediate column is lower than the high pressure column but higher than the low pressure column,d) introducing at least a fraction of the liquid fractions A and B into the low pressure column as feed,e) feeding at least a fraction of the nitrogen-rich stream of step b) to the low pressure column as reflux, andf) recovering an oxygen-rich stream product at the bottom of the low pressure column and a low pressure nitrogen- rich stream at the top of the low pressure which further comprises recovering a medium pressure nitrogen stream column.

公开(公告)号：US06914082B2

公开(公告)日：2005-07-05

申请号：US10023258

申请日：2001-12-14

Applicant: Jianping Zhang ,  Rafael L. Espinoza ,  Sergio Mohedas

Inventor： Jianping Zhang ,  Rafael L. Espinoza ,  Sergio Mohedas

IPC: C07C1/04 ,  C07C27/00 ,  C07C27/06 ,  C10G2/00 ,  F25J20060101

CPC classification number: C10G2/342

Abstract: A gas-agitated multiphase reactor system for the synthesis of hydrocarbons gives high catalyst productivity and reactor capacity. The system includes operating a multi-phase reactor in the well-mixed gas flow regime, with a Peclet number less than 0.175 and a single pass conversion ranging from 35% to 75%, wherein the inlet superficial gas velocity decreases with the decreasing of the reactor aspect ratio, and is preferably at least 20 cm/sec.

Abstract translation: 用于合成烃的气体搅拌多相反应器系统提供高催化剂生产率和反应器容量。 该系统包括在充分混合的气体流动状态下操作多相反应器，佩佩特数小于0.175，单程转化率为35％至75％，其中入口表观气体速度随着 反应器纵横比，优选为20cm /秒以上。

公开(公告)号：US5331818A

公开(公告)日：1994-07-26

申请号：US81359

申请日：1993-06-23

Applicant: Thomas Rathbone

Inventor： Thomas Rathbone

IPC: F25J20060101 ,  F25J3/04 ,  F25J3/02

CPC classification number: F25J3/04709 ,  F25J3/0409 ,  F25J3/042 ,  F25J3/04278 ,  F25J3/04296 ,  F25J3/04351 ,  F25J3/04393 ,  F25J3/04454 ,  F25J2215/50 ,  F25J2235/50 ,  F25J2245/50 ,  F25J2250/42 ,  F25J2250/52 ,  F25J2270/906 ,  Y10S62/94

Abstract: Air is rectified in a rectification system comprising a higher pressure rectification column, an intermediate pressure rectification column, and a lower pressure rectification column. A first reboiler-condenser provides liquid nitrogen reflux for the higher pressure rectification column and for the lower pressure rectification column and also reboils the intermediate pressure rectification column. Another reboiler-condenser provides liquid nitrogen reflux for the intermediate pressure rectification column and reboils the lower pressure rectification column. Air is fed to the higher pressure rectification column through a pair of inlets. A first oxygen product is withdrawn from the intermediate pressure rectification column by a pump. Gaseous nitrogen products are withdrawn from the intermediate and lower pressure rectification columns through a pair of outlets thereof.

Abstract translation: 空气在包括高压精馏塔，中压精馏塔和低压精馏塔的整流系统中进行整流。 第一再沸器 - 冷凝器为高压精馏塔和低压精馏塔提供液氮回流，并且还重新沸腾中压精馏塔。 另一个再沸器 - 冷凝器为中压精馏塔提供液氮回流，并重新排出低压精馏塔。 空气通过一对入口进入高压精馏塔。 第一氧气产物通过泵从中压精馏塔中排出。 气态氮产物通过其一对出口从中压精馏塔和低压精馏塔排出。

公开(公告)号：USRE32068E

公开(公告)日：1986-01-21

申请号：US704180

申请日：1985-02-22

Applicant: James M. Ryan ,  John V. O'Brien

Inventor： James M. Ryan ,  John V. O'Brien

IPC: C07C7/08 ,  B01D3/14 ,  C07C1/00 ,  C07C7/04 ,  C07C67/00 ,  F25J20060101 ,  F25J3/02 ,  F25J3/08

CPC classification number: F25J3/0238 ,  B01D3/146 ,  C07C7/04 ,  F25J3/0209 ,  F25J3/0219 ,  F25J3/0233 ,  F25J3/0242 ,  F25J3/0247 ,  F25J3/0257 ,  F25J3/0266 ,  F25J2205/50 ,  F25J2210/12 ,  F25J2215/64 ,  F25J2220/66 ,  Y02C10/12 ,  Y02P20/124 ,  Y02P20/152 ,  Y02P20/57 ,  Y10S62/929

Abstract: An improved method for the distillation of a feed stream containing hydrocarbon components, which method is directed toward the production of a bottom product stream and an overhead product stream, both with desired specifications, which method comprises recycling a minor portion of the bottom product stream typically, but not necessarily, derived from said separation directly to a reflux condenser for the overhead product stream of said method, in order to effect a savings in energy in said distillative method, such as by adjusting the column operating conditions, such as the column operating pressure or the top or bottom operating temperatures of said column.

公开(公告)号：US4428759A

公开(公告)日：1984-01-31

申请号：US458047

申请日：1983-01-14

Applicant: James M. Ryan ,  John V. O'Brien

Inventor： James M. Ryan ,  John V. O'Brien

IPC: C07C7/08 ,  B01D3/14 ,  C07C1/00 ,  C07C7/04 ,  C07C67/00 ,  F25J20060101 ,  F25J3/02 ,  F25J3/08 ,  F25J3/04

CPC classification number: F25J3/0238 ,  B01D3/146 ,  C07C7/04 ,  F25J3/0209 ,  F25J3/0219 ,  F25J3/0233 ,  F25J3/0242 ,  F25J3/0247 ,  F25J3/0257 ,  F25J3/0266 ,  F25J2205/50 ,  F25J2210/12 ,  F25J2215/64 ,  F25J2220/66 ,  Y02C10/12 ,  Y02P20/124 ,  Y02P20/152 ,  Y02P20/57 ,  Y10S62/929

Abstract: An improved method for the distillation of a feed stream containing hydrocarbon components, which method is directed toward the production of a bottom product stream and an overhead product stream, both with desired specifications, which method comprises recycling a minor portion of the bottom product stream typically, but not necessarily, derived from said separation directly to a reflux condenser for the overhead product stream of said method, in order to effect a savings in energy in said distillative method, such as by adjusting the column operating conditions, such as the column operating pressure or the top or bottom operating temperatures of said column.

公开(公告)号：US4383842A

公开(公告)日：1983-05-17

申请号：US307672

申请日：1981-10-01

Applicant: John V. O'Brien

Inventor： John V. O'Brien

IPC: C01B32/50 ,  C07C1/00 ,  C07C7/05 ,  C07C9/04 ,  C07C67/00 ,  F25J20060101 ,  F25J3/02 ,  F25J3/08 ,  F25J3/00

CPC classification number: F25J3/0266 ,  C07C7/05 ,  F25J3/0209 ,  F25J3/0233 ,  F25J3/0238 ,  F25J2205/50 ,  F25J2220/66 ,  Y02C10/12 ,  Y02P20/152 ,  Y10S62/929

Abstract: An improvement in a Ryan/Holmes separation of methane from carbon dioxide is disclosed wherein the upper portion of a distillation column is operated at temperatures above the triple point of carbon dioxide, i.e., -70.degree. F., while still effectuating a separation of methane from carbon dioxide. This is achieved by increasing the amount of non-polar liquid agent added to the condenser of the column to an amount sufficient to maintain the condenser and all portions of the column at such temperatures.

Abstract translation: 公开了一种瑞恩/福尔摩斯从二氧化碳中分离甲烷的改进，其中蒸馏塔的上部在高于二氧化碳三重点的温度（即-70°F）下操作，同时仍然实现甲烷分离 来自二氧化碳。 这通过将添加到塔的冷凝器中的非极性液体试剂的量增加到足以将冷凝器和塔的所有部分维持在这样的温度下的量来实现。