-
公开(公告)号:US06657079B1
公开(公告)日:2003-12-02
申请号:US09640630
申请日:2000-08-17
IPC分类号: C07C4534
摘要: A method for mixing a plurality of gases including forming a helical flow within a mixing vessel thereby allowing simplification of construction, avoiding pressure drop to the fullest possible extent, and expediting the mixture lest the volume of a gas within the explosion limits should increase, and an apparatus to be used for the method.
摘要翻译: 一种用于混合多种气体的方法,包括在混合容器内形成螺旋流,从而允许简化构造,避免压力下降到最大可能程度,并加速混合物,以免爆炸极限内的气体体积增加, 用于该方法的装置。
-
公开(公告)号:US06642414B2
公开(公告)日:2003-11-04
申请号:US09772458
申请日:2001-01-30
IPC分类号: C07C5142
CPC分类号: C07C51/44 , C07C51/252 , C07C51/48 , C07C57/04
摘要: A method for producing (meth)acrylic acid of high purity by repressing formation of a polymer possibly generated during the course of production is disclosed. The production is accomplished by returning the waste liquid generated at the step of the addition of aldehyde treating agents (d) to the step of the absorption (b) and/or the step of separation (c).
摘要翻译: 公开了通过抑制可能在生产过程中产生的聚合物的形成来生产高纯度(甲基)丙烯酸的方法。 通过将在醛加工剂(d)的添加步骤中产生的废液返回到吸收步骤(b)和/或分离步骤(c)中来完成生产。
-