Patents by Inventor Shinkichi Nozawa

Shinkichi Nozawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4315900
    Abstract: Disclosed is an integrated process for the production of methanol and ammonia which comprises the steps of subjecting a gaseous hydrocarbon feed to primary reforming with steam to produce a methanol synthesis gas containing H.sub.2 and CO, synthesizing methanol from this methanol synthesis gas, subjecting the purge gas resulting from the methanol synthesis step to secondary reforming with steam and air to produce an ammonia synthesis gas containing H.sub.2, N.sub.2, CO and CO.sub.2, subjecting this ammonia synthesis gas to high temperature shift conversion for the purpose of reducing its CO content, passing the CO-impoverished ammonia synthesis gas through a series of steps required for the removal of carbon oxides, and subjecting the resulting CO-free ammonia synthesis gas to ammonia synthesis.
    Type: Grant
    Filed: October 6, 1980
    Date of Patent: February 16, 1982
    Assignee: Toyo Engineering Corporation
    Inventors: Shinkichi Nozawa, Kenjiro Miyashita
  • Patent number: 4219492
    Abstract: A process for manufacturing methanol is disclosed, wherein the pressure in the step of preparation of the synthesis gas is selected equal to the pressure in the step of preparation of methanol from the synthesis gas. The operation efficiency of the process is maintained by recycling the methanol-free recycle stream to the reaction zone for methanol synthesis notwithstanding the lower pressure in the step of methanol synthesis.
    Type: Grant
    Filed: April 9, 1979
    Date of Patent: August 26, 1980
    Assignee: Toyo Engineering Corporation
    Inventors: Keizo Konoki, Shinkichi Nozawa