Abstract:
An apparatus (10) and a method for purifying an easily polymerizable substance equipped with a rectifying column (11) for purifying the easily polymerizable substance by continuous distillation thereof, wherein an introduction port for a first polymerization inhibitor (27) is provided in an intermediate portion (26) of the rectifying column (11), preferably at a position such that a theoretical plate number (H2) from the introduction port (27) for the polymerization inhibitor to the top (15) of the column satisfies the formula: 0.1 x H1
Abstract translation:一种装置(10)和一种用于提纯装有精馏塔(11)的易聚合物质的方法,所述精馏塔用于通过连续蒸馏来提纯容易聚合的物质,其中第一聚合抑制剂(27)的引入口设置在中间体 精馏塔(11)的部分(26)优选位于使得从聚合抑制剂的引入口(27)到塔顶(15)的理论塔板数(H2)满足公式:0.1 x H1 <= H2 <(H1)其中(H1)表示从用于易聚合物质的引入口(25)到塔顶(15)的理论塔板数。 该装置和方法可以防止精馏塔内的聚合和将聚合抑制剂掺入到精馏馏分中,从而产生高质量的产物。
Abstract:
A method of managing an easily polymerizable substance, comprising replacing a liquid containing easily polymerizable substance that is retained in a bypass pipe for flow rate control valve or flow meter secured to a piping through which a liquid containing easily polymerizable substance flows so as to prevent the polymerization of easily polymerizable substance in the bypass pipe; and an easily polymerizable substance managing apparatus therefor. In the method of managing an easily polymerizable substance, opening/closing of a bypass shut-off valve is intermittently performed so as to replace the liquid containing easily polymerizable substance retained in the bypass pipe. In the method, during the managing of the liquid containing easily polymerizable substance, the bypass shut-off valve is opened so as to cause portion of the liquid containing easily polymerizable substance flowing through the piping to flow into the bypass pipe. The flow rate of liquid containing easily polymerizable substance flowing through the flow rate control valve or flow meter is 80% or more of the total flow rate of liquid containing easily polymerizable substance flowing through the piping.
Abstract:
A vertical multi-tubular heat exchanger (1) for exchanging heat by leading process fluid containing lase-of-polymerization into heat exchanger tubes, comprising a shell body (2) extending in vertical direction, an upper tube plate (8) and a lower tube plate (10) installed at the upper part (4) and the lower part (6) of the shell body (2), and the plurality of heat exchanger tubes (28) fixed to these upper tube plate (8) and the lower tube plate (10) at both end part peripheral parts (26) thereof, wherein the upper surface (34) of the upper tube plate (8) is formed aslant, and at least one of the heat exchanger tubes (28) is disposed near the lowest position of the upper surface (34) of the upper tube plate (8).