Back to results
US 4,784,770 AGranted
Method for producing methane gas
OwnerMasamichi Nagaoinventor
Life of this patent
Estimating the term…
Abstract
A method and apparatus for producing methane gas from organic solid materials in existence in industrial and living wastes, in which the oganic materials are finely ground by milling while water or organic suspension is added by injection in order to prepare a slurry, in which the slurry is deaerated to obtain raw liquid for generating methane gas in high concentration, and in which the digestive tank receives the raw liquid with treating by anaerobic bacteria to generate the methane gas.
Claims5
A method for producing methane gas, comprising the steps of:
- grinding bean-curd refuse into fine particles of approximately 1-50 microns by grinding means which include a rotary disc and a fixed disc facing the rotary disc, a clearance between the discs being in a range of about 10-100 microns;
- adding water or organic suspension during the grinding, to prepare a slurry;
- feeding the thus-prepared slurry to a storage tank;
- deaerating the slurry in the storage tank to obtain raw liquid for generating methane gas in high concentration;
- after said deaerating step, feeding the raw liquid to a digestive tank;
- and
- treating the raw liquid in the digestive tank with anaerobic bacteria to generate and the methane gas.
4 more elements
Dependencies are inferred from the claim text.