Patents Assigned to Milmac Operating Company
  • Method for removal of sulfur dioxide
    Patent number: 6096239
    Abstract: A method for removing sulfur dioxide from gas streams, comprising contacting the gas stream with an aqueous absorption liquid, transferring the liquid to another location, then mildly heating the liquid to recover the sulfur dioxide. This method allows a removal of 99.9% of the sulfur dioxide, the recovery of very pure sulfur dioxide, is resistant to upsets due to variations in the gas stream, and is cost effective.
    Type: Grant
    Filed: January 13, 1998
    Date of Patent: August 1, 2000
    Assignee: Milmac Operating Company
    Inventors: Johnson H. Y. Fung, Raghu S. Narayan, Chien Kuei Tsai
  • Method for removal of sulfur dioxide
    Patent number: 5785888
    Abstract: A method for removing sulfur dioxide from gas streams, comprising contacting the gas stream with the aqueous absorption liquid, transferring the liquid to another location, then mildly heating the liquid to recover the sulfur dioxide. This absorption liquid allows removal of 99.9% of the sulfur dioxide, the recovery of very pure sulfur dioxide, is resistant to upsets due to variations in the gas stream, and is cost effective.
    Type: Grant
    Filed: March 24, 1995
    Date of Patent: July 28, 1998
    Assignee: Milmac Operating Company
    Inventors: Chien Kuei Tsai, Johnson H. Y. Fung, Raghu S. Narayan