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# c19) United States c12) Patent Application Publication 

# Critchfield et al. 

# (54) ABSORBENT COMPOSITION FOR THE SELECTIVE ABSORTPTION OF HYDROGEN SULFIDE AND PROCESS OF USE THEREOF 

(71) Applicant: SHELL OIL COMPANY, Houston, TX (US) 

(72) Inventors: James Edward Critchfield, Austin, TX (US); Diego Patricio Valenzela, Amsterdam (NL); Loren Clark Wilson, Katy, TX (US); Jingjun Zhou, The Woodlands, TX (US) 

(21) Appl. No.: 14/402,414 

(22) PCT Filed: May 29, 2013 

(86) PCT No.: PCT /US2013/043105 § 371 (c)(l), (2) Date: Nov. 20, 2014 

(60) Provisional application No. 61/653,920, filed on May 31, 2012. 

## Related U.S. Application Data 

<img src='content_image/931468.jpg'>

(51) Int. Cl. BOID53/14 (2006.01) 

(52) U.S. Cl. CPC ........ BOID 53/1493 (2013.01); BOID 53/1468 (2013.01) USPC ........................................... 423/228; 252/190 

## (57) ABSTRACT 

An absorbent composition that is useful in the selective removal of hydrogen sulfide relative to carbon dioxide from gaseous mixtures that comprise both hydrogen sulfide and carbon dioxide and the use thereof. The absorbent composi› tion includes an aqueous solvent that comprises an amine mixture, comprising an amination reaction product of tert› butylamine and a poly dispersed polyethylene glycol mixture, and water with a concentration of an added strong acid to inhibit phase separation of the aqueous solvent. The operation of certain gas absorption processes can be improved by the use of the absorbent composition. 

US 20150093314Al 

# c10) Pub. No.: US 2015/0093314 Al 

# (43) Pub. Date: Apr. 2, 2015 

## Publication Classification 

<img src='content_image/931487.jpg'>

