公开(公告)号：US20180273463A1

公开(公告)日：2018-09-27

申请号：US15996394

申请日：2018-06-01

Applicant: UOP LLC

Inventor： Raelynn M. Miller ,  Alakananda Bhattacharyya ,  David S. Lafyatis ,  Amanda L. Stolarski ,  Rodrigo Lobo ,  Madan Bhasin

IPC: C07C51/487 ,  C07C51/255 ,  C07C63/26 ,  B01J23/44 ,  B01J27/224 ,  B01J21/06 ,  B01J35/10

CPC classification number: C07C51/487 ,  B01J21/06 ,  B01J23/44 ,  B01J27/224 ,  B01J35/006 ,  B01J35/1009 ,  B01J37/12 ,  B01J37/16 ,  B01J37/18 ,  C07C51/255 ,  C07C63/26

Abstract: Impure aromatic carboxylic acids such as are obtained by liquid phase oxidation of feed materials comprising aromatic compounds with substituent groups oxidizable to carboxylic acid groups, or comprising aromatic carboxylic acid and one or more aromatic carbonyl impurities that form hydrogenated species more soluble in aqueous solvents or with less color or color-forming tendencies than the aromatic carbonyl impurity, are purified to an aromatic carboxylic acid product with lower levels of impurities by a process comprising contacting an aqueous solution comprising the impure aromatic carboxylic acid with hydrogen at elevated temperature and pressure with an attrition-resistance, acid stable catalyst composition comprising at least one hydrogenation catalyst metal and a support comprising relatively high surface area of high porosity silicon carbide with low levels of iron and alkali metal impurities. The support may further contain titanium or rare earth metals.

公开(公告)号：US08993467B2

公开(公告)日：2015-03-31

申请号：US13970853

申请日：2013-08-20

Applicant: UOP LLC

Inventor： Bryan J. Egolf ,  Feng Xu ,  Raelynn M. Miller

IPC: B01J38/40

CPC classification number: B01J23/96 ,  B01J8/085 ,  B01J8/087 ,  B01J8/12 ,  B01J38/12 ,  B01J38/14 ,  B01J38/44 ,  B01J2208/00504

Abstract: A method of operating a continuous or semi-continuous system for a catalyst regeneration process. The system comprises a regenerator, the regenerator comprising a combustion zone and a halogenation zone. The catalyst is fed into the regenerator. A circulating regeneration gas is introduced into a regenerator circuit including oxygen, the circulating regeneration gas having a nitrogen concentration that is less than air. Oxygen from the circulating regeneration gas reacts with the coke to provide water and carbon dioxide. Water and the carbon dioxide formed in this first reaction then further react with the coke to form carbon monoxide and hydrogen.

Abstract translation: 一种用于催化剂再生过程的连续或半连续系统的操作方法。 该系统包括再生器，再生器包括燃烧区和卤化区。 将催化剂进料到再生器中。 循环再生气体被引入到包含氧的再生器回路中，循环再生气体的氮浓度小于空气。 来自循环再生气体的氧气与焦炭反应以提供水和二氧化碳。 然后在该第一反应中形成的水​​和二氧化碳进一步与焦炭反应以形成一氧化碳和氢气。

公开(公告)号：US20150057146A1

公开(公告)日：2015-02-26

申请号：US13970853

申请日：2013-08-20

Applicant: UOP LLC

Inventor： Bryan J. Egolf ,  Feng Xu ,  Raelynn M. Miller

IPC: B01J38/40

CPC classification number: B01J23/96 ,  B01J8/085 ,  B01J8/087 ,  B01J8/12 ,  B01J38/12 ,  B01J38/14 ,  B01J38/44 ,  B01J2208/00504

Abstract: A method of operating a continuous or semi-continuous system for a catalyst regeneration process. The system comprises a regenerator, the regenerator comprising a combustion zone and a halogenation zone. The catalyst is fed into the regenerator. A circulating regeneration gas is introduced into a regenerator circuit including oxygen, the circulating regeneration gas having a nitrogen concentration that is less than air. Oxygen from the circulating regeneration gas reacts with the coke to provide water and carbon dioxide. Water and the carbon dioxide formed in this first reaction then further react with the coke to form carbon monoxide and hydrogen.

Abstract translation: 一种用于催化剂再生过程的连续或半连续系统的操作方法。 该系统包括再生器，再生器包括燃烧区和卤化区。 将催化剂进料到再生器中。 循环再生气体被引入到包含氧的再生器回路中，循环再生气体的氮浓度小于空气。 来自循环再生气体的氧气与焦炭反应以提供水和二氧化碳。 然后在该第一反应中形成的水​​和二氧化碳进一步与焦炭反应以形成一氧化碳和氢气。