| (19) |
 |
|
(11) |
EP 0 295 715 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
12.07.1989 Bulletin 1989/28 |
| (43) |
Date of publication A2: |
|
21.12.1988 Bulletin 1988/51 |
| (22) |
Date of filing: 20.06.1988 |
|
|
| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
19.06.1987 JP 153030/87
|
| (71) |
Applicants: |
|
- SAIBU GAS CO.,LTD.
Fukuoka-shi
Fukuoka-ken (JP)
- MITSUBISHI PETROCHEMICAL ENGINEERING CO., LTD.
Chuo-ku
Tokyo (JP)
|
|
| (72) |
Inventors: |
|
- Kanamaru, Toshihisa
Fukuoka-shi
Fokuoka-ken (JP)
- Urano, Shoji
Fukuoka-shi
Fokuoka-ken (JP)
- Inoue, Masayuki
Fukuoka-shi
Fokuoka-ken (JP)
- Nishino, Chikashi
Kashima-gun
Ibaraki-ken (JP)
|
| (74) |
Representative: Hansen, Bernd, Dr.rer.nat. et al |
|
Hoffmann, Eitle & Partner
Patentanwälte
Postfach 81 04 20
81904 München
81904 München (DE) |
|
| |
|
| (54) |
Process for forming city gas with high heat value from methanol as a crude material |
(57) A process for producing a city gas having a high caloric content wherein a methanol-water
mixture is reacted in a one-step reaction to produce a methane-rich gas mixture containing
methane, hydrogen, carbon monoxide, carbon dioxide and water. The water is separated
from the methane-rich gas mixture and recycled as a water feed. The carbon dioxide
is then removed from the methane-rich gas mixture and butane is added to the remaining
methane-rich gas to produce a resultant city gas having a heat value of at least about
11,000 Kcal/Nm³. The total amount of heat required to heat the reactants and sustain
the process at steady state conditions is provided by heat that is recovered and recycled
from the heat of reaction. A nickel catalyst is used to promote the one-step reaction.