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    • 8. 发明公开
    • VANADIUM PENTOXIDE PURIFYING SYSTEM AND METHOD
    • 钒氧化物净化系统和方法
    • EP3243799A1
    • 2017-11-15
    • EP16742780.6
    • 2016-01-28
    • Institute of Process Engineering, Chinese Academy of SciencesBeijing Zhongkaihongde Technology Co., Ltd.
    • ZHU, QingshanFAN, ChuanlinMU, WenhengLIU, JibinWANG, CunhuBAN, Qixun
    • C01G31/02
    • C01G31/02B01D3/14B01D19/0057B01J8/24C01G31/04C01P2006/80
    • The present invention provides a system and method for purifying vanadium pentoxide. Industrial grade vanadium pentoxide is converted to vanadium oxytrichloride by low temperature fluidizing chlorination, wherein chlorinating gas is preheated via heat exchange between fluidizing gas and chlorination flue gas, and an appropriate amount of air is added to enable a part of carbon powder to combust so as to achieve a balanced heat supply during the chlorination, thereby increasing the efficiency of chlorination and ensuring good selectivity in low temperature chlorination. The vanadium oxytrichloride is purified by rectification, and then subjected to plasma oxidation, thereby obtaining a high-purity vanadium pentoxide product and chlorine gas. The chlorine gas is returned for low temperature chlorination. The system and method have advantages of favorable adaptability to a raw material, no discharge of contaminated wastewater, low energy consumption and chlorine consumption in production, stable product quality and so on.
    • 本发明提供了用于纯化五氧化钒的系统和方法。 通过低温流化氯化将工业级五氧化二钒转化为三氯氧化钒,其中通过流化气体与氯化烟气之间的热交换预热氯化气体,并加入适量的空气以使一部分碳粉燃烧 在氯化过程中实现均衡供热,从而提高氯化效率并确保低温氯化中的良好选择性。 通过精馏纯化三氯氧化钒,然后进行等离子体氧化,由此获得高纯度五氧化二钒产品和氯气。 氯气返回低温氯化。 该系统和方法具有对原料适应性好,污染废水不排放,生产能耗低,耗氯量少,产品质量稳定等优点。
    • 10. 发明授权
    • Fractional distillation method using a dividing wall distillation column for producing high purity acrylic acid
    • 用分隔壁蒸馏塔分馏生产高纯度丙烯酸的方法
    • EP2409747B1
    • 2017-09-13
    • EP10753734.2
    • 2010-03-19
    • LG Chem, Ltd.
    • LEE, Sung KyuLEE, Jong KuSHIN, Joon Ho
    • C07C51/44C07C57/04B01D3/14
    • B01D3/14B01D3/141C07C51/44C07C51/445C07C57/04
    • There are provided a dividing wall distillation column for producing high-purity acrylic acid, and a fractional distillation method using the same. The dividing wall distillation column includes a condenser, a reboiler and a main column having a dividing wall. Here, the main column is divided into a column-top zone, an upper feed zone, an upper outflow zone, a lower feed zone, a lower outflow zone and a column-bottom zone. Also, a crude acrylic acid raw material (F) flows in a middle inflow plate NR1 in which the upper feed zone and the lower feed zone come in contact with each other, a low boiling point component (D) flows out from the column-top zone, a high boiling point component (B) flows out from the column-bottom zone, and a middle boiling point component (S) flows out through a middle outflow plate NR2 in which the upper outflow zone and the lower outflow zone come in contact with each other. In this case, the middle boiling point component is acrylic acid. Accordingly, since one distillation column can be used to realize the same effect as that obtained from the use of two distillation columns, the dividing wall distillation column can have an effect of reducing the costs of equipment to produce high-purity acrylic acid, as well as an energy-reducing effect, compared to a conventional process system.
    • 提供了用于生产高纯度丙烯酸的分隔壁蒸馏塔以及使用其的分馏方法。 分隔壁蒸馏塔包括冷凝器,再沸器和具有分隔壁的主塔。 这里,主塔分为塔顶区,上部进料区,上部出料区,下部进料区,下部出料区和塔底区。 此外,粗丙烯酸原料(F)在上部进料区和下部进料区彼此接触的中间流入板NR1中流动,低沸点组分(D) 高沸点组分(B)从塔底区流出,中沸点组分(S)通过中间流出板NR2流出,其中上部流出区和下部流出区进入其中 相互联系。 在这种情况下,中沸点组分是丙烯酸。 因此,由于可以使用一个蒸馏塔来实现与使用两个蒸馏塔所获得的效果相同的效果,所以分隔壁蒸馏塔可以具有降低生产高纯度丙烯酸的设备成本的效果 作为一种能量减少的效果,与传统的处理系统相比。