Dry distillation

Japanese: 乾留 - かんりゅう(英語表記)dry distillation
Dry distillation

This is the process of heating and decomposing solid organic matter such as wood and coal in an airtight manner to obtain a gaseous liquid containing ammonia (in the case of charcoal, it is called wood vinegar), an oily substance called tar, etc. In the case of coal, there are low-temperature and high-temperature carbonization methods depending on the temperature used.

[Shigeru Tagami]

[Reference items] | Coal | Coal chemical industry | Wood carbonization

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

空気を遮断して木材、石炭などの固体有機物を加熱・分解することにより、アンモニアを含むガス液(木炭の場合は木酢液(もくさくえき)という)、油状物質のタールなどを得る操作をいう。石炭の場合、使用温度により低温乾留、高温乾留がある。

[田上 茂]

[参照項目] | 石炭 | 石炭化学工業 | 木材乾留

出典 小学館 日本大百科全書(ニッポニカ)日本大百科全書(ニッポニカ)について 情報 | 凡例

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