The Hong Kong Research Institute of Textiles and Apparel Limited

Clearwaterbay Technology, Inc.

Hok Chung Chan

Lei Yao

Edwin Yee Man Keh

Un Teng Lam

Drow Lionel O'Young

Christianto Wibowo

Lap Hung Chan

Lee Ying Yu

Vaibhav V Kelkar

Madhura Kelkar

Sai Lung Fung

A method for decolorizing a dyed textile comprising a synthetic fiber and a disperse dye, the method includes contacting the dyed textile with a super critical fluid thereby extracting at least a portion of the disperse dye from the textile into the super critical fluid and forming an at least partially decolorized textile.

Method for decolorizing textiles

Embodiments of the present invention describe systems and methods for production of methyl isobutyl ketone (MIBK) from acetone and hydrogen in a two-step process. In a first step, acetone is converted to a product stream containing mesityl oxide (MO) at a temperature in the range of about 0-120&#xb0; C. and a pressure in the range of about 1-3 atm. The composition of the product stream from the first reaction step is adjusted so that the resulting stream can undergo a favorable liquid-liquid separation in a decanter, and an MO rich product stream can be recovered. The composition of the feed to the decanter is controlled by choosing the number of reactor stages for the first reaction step and their operating temperatures, and/or by recycling some MIBK to the decanter feed. The method does not require a substantially complete conversion of acetone in the first reaction step, nor does it require a removal of DAA from the product of the first reaction step by separation.

Two-step system and method for the production of methyl isobutyl ketone

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Hong Kong, China

Hok Chung Chan