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Title:
METHOD FOR CALCULATING METHANE NUMBER AND DEVICE FOR DETERMINING METHANE NUMBER
Document Type and Number:
WIPO Patent Application WO/2016/104270
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a method for methane number calculation with which a probably reliable methane number of a natural gas to be examined can be easily obtained regardless of the composition of the gas; and a device for methane number determination with which it is possible to monitor the fuel properties of a natural gas being used as a fuel gas. In the present invention, a specific relationship between methane number and basic calorific value is acquired in advance with respect to multiple reference gases which each consist of natural gas and which differ in methane number, and the basic calorific value of a natural gas to be examined is determined. The methane number of the gas being examined is calculated from the measured value of basic calorific value of the gas being examined and from the specific relationship.

Inventors:
ISHIGURO, Tomoo (7-6, Azusawa 2-chome, Itabashi-k, Tokyo 44, 〒1748744, JP)
KOJIMA, Kenichi (7-6, Azusawa 2-chome, Itabashi-k, Tokyo 44, 〒1748744, JP)
Application Number:
JP2015/085177
Publication Date:
June 30, 2016
Filing Date:
December 16, 2015
Export Citation:
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Assignee:
RIKEN KEIKI CO., LTD. (7-6 Azusawa 2-chome, Itabashi-ku Tokyo, 44, 〒1748744, JP)
International Classes:
G01N33/22; C10L3/06; G01K17/00
Domestic Patent References:
WO2014054081A12014-04-10
WO2012066828A12012-05-24
Foreign References:
JP2004162649A2004-06-10
JP2002509249A2002-03-26
Other References:
SCHLEY P ET AL.: "Bestimmung der Methanzahl aus Gasbeschaffenheitskenngroessen", GWF GAS ERDGAS, vol. 141, no. 1, 2000, pages 28 - 33
Attorney, Agent or Firm:
OHI, Masahiko (Nankodo 2nd Building, 43-13 Hongo 3-chome, Bunkyo-k, Tokyo 33, 〒1130033, JP)
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