Korea Institute of Science and Technology

Jun-Woo Oh

Oh-shim Joo

Kwang-Deog Jung

Seong-Hoon Cho

Seong-Hwan Han

A method for producing DME, which comprises separating a COrich stream from a crude product stream containing DME and COobtained by a DME synthesis from a feed syn gas; introducing the COrich stream to a reverse water gas shift (RWGS) reactor wherein it is reacted with hydrogen in the presence of an oxide catalyst of either ZnO or NiO to provide a CO rich stream, and recycling the CO rich stream to the step of the methanol synthesis step.

Method for the production of dimethyl ether

Malodorous gases such as amines, organosulfur compounds, hydrogen sulfide, styrene and aldehydes are economically and efficiently treated at ambient temperature and pressure by a catalytic absorption and oxidation process comprising: (a) bringing the malodorous gases into contact with a scrubbing water containing a heterogeneous catalyst to absorb the malodorous components catalytically, and (b) subjecting the resulting solution containing the malodorous components to a catalytic oxidation by contacting it with an oxidizing agent such as hydrogen peroxide, ozone, oxygen, air, nitrogen oxides, and NaOCl in the presence of the catalyst at a temperature ranging from 0 to 100 &square; under an ambient pressure, the heterogeneous catalyst comprising an active metal element selected from alkali, alkaline earth and transition metals, and an oxide support material.

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Seoul, South Korea

Jun-Woo Oh