毛片中文字幕_国产精品一二三四_一级特黄性色生活片_娇妻各种场合肉hnp_男人操女人的网站_亚洲精品乱码久久久久膏_欧美一级大片在线观看_甘雨被啪漫画禁漫天堂_久久精品永久免费_国产女主播视频一区二区

Heat transfer oil is a kind of heat carrier oil, a kind of special oil with good thermal stability for indirect heat transfer. Because of its uniform heating, accurate temperature control, high temperature under low vapor pressure, good heat transfer effect, energy saving, convenient transportation and operation, etc., it has been widely used in various occasions in recent years, and its use and dosage are more and more More and more. The Zhengwei reactor is equipped with an electric heating rod in the heating jacket and uses electric heating oil to achieve a stable temperature rise in the oil bath of the kettle body without the need for an additional external circulation device. For larger reactors, a hot oil pump is additionally equipped to circulate the heat transfer oil in the jacket to prevent coking.