低温タールより低級オレフインの製造
書誌事項
- タイトル別名
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- Production of Lower Olefins from Low Temperature Tar
抄録
To obtain lower olefins, especially ethylene in high yield, pyrolytic cracking of 120-360°C fraction of low temperature tar from Miike coal and TOhoku lignite has been investigated. These results were compared with those about petroleum oils, i.e. gas oil and cracking stock.<BR>They were pyrolyzed with superheated steam in stainless steel reactor (50mm∅) packed with chamotte brick (4-7mesh, 500cc).<BR>In the preliminary investigation of pyrolysis of cracking stock, better results were obtained when steam/oil ratio was 6g/cc and liquid space velocity was 1.0vol/hr. Then these conditions were applied for other oil and tar.<BR>Content of olefins in cracked gas from tar is not so high as those from petroleum oils.<BR>Yield of ethylene from neutral oil of Miike tar is nearly the same as cracking stock, about 22% by weight, but that from unwashed tar is lower than that from neutral tar oil or cracking stock, about 17% by weight, yield of olefins except ethylene from neutral tar oil is about half of that from petroleum oil, especially at 700<BR>°C. In gas worth (Japan heat unit X 104/k/ kl), tars are especially inferior to petroleum oils.<BR>There is proportional relation between the result of pyrolysis and C/H (wt) ratio of the charge oil or residual carbon; volume of cracked gas, yield of olefins, calorific#value of gas and gas worth etc. decrease with increasing C/H ratio or residual carbon.
収録刊行物
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- 燃料協会誌
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燃料協会誌 36 (6), 526-534, 1957
一般社団法人 日本エネルギー学会
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詳細情報 詳細情報について
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- CRID
- 1390282679335497728
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- NII論文ID
- 130004015246
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- ISSN
- 2185226X
- 03693775
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- データソース種別
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- JaLC
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可