Glycerol distilling process and special glycerol distillation tower thereof
A distillation tower and process technology, applied in the field of special glycerin distillation tower, can solve the problems of poor separation ability and low purity of glycerin, and achieve the effect of increasing the height of the tower
Inactive Publication Date: 2013-06-05
南通凯塔化工科技有限公司
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Problems solved by technology
[0002] In the production process of traditional glycerin distillation tower, chemical reactions such as cracking and polymerization are prone to occur, and various impurities such as aldehydes, ketones and polymerized glycerin are generated, and the separation ability of each component in the distillation process is poor, and the purity of the produced glycerin is not high. about 98%
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[0016] The present invention is mainly composed of tower body 1, collectors 2a, 2b, 2c, distributors 3a, 3b, 3c, pipeline 4, and packing 5.
[0017] Such as figure 1 As shown, three layers of packing 5 are distributed from top to bottom in the tower body 1. The top packing is wire mesh packing, and collector 2a is distributed above it; Collectors 2b are distributed between them, and collectors 2c are distributed between the middle layer and the lower layer of packing. Above-mentioned collector 2b, 2c structure is identical, as figure 2 , 3 As shown, the collectors are all distributed concentrically with the tower body, and the collectors 2b, 2c are all composed of rows of V-shaped grooves 6 arranged longitudinally, leaving gaps between the grooves, and the effect of the grooves 6 is to make liquid Glycerol channel; the gap is the gas phase glycerol channel. The collector 2b, 2c is provided with two outlets 7, 8, the outlet 7 communicates with the outside world, and the ou...
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The invention discloses a glycerol distilling process. The process comprises the following steps: crude glycerol at 50 to 60 DEG C is adjusted to be between 80 and 90 DEG C through heat exchange by a heat exchanger, and enters a degassing tank for degassing, dehydrating and deodorizing; the degassed crude glycerol is heated to a temperature of between 170 and 185 DEG C through a reboiler, then enters the distillation tower for distillation; and finally, the distilled glycerol is decolored to obtained a finished product. The process is characterized in that: the glycerol enters a distillation tower for distillation and is distilled in three steps; impurities in the glycerol are separated by controlling the conditions of different temperatures and the like so as to obtain competitive glycerol finally. The competitive glycerol which is effectively separated through repeated exchanges of liquid phases and gas phases can achieve the separation content more than 99.5 percent. The invention also discloses a distillation tower for implementing the process, wherein three layers of filler are distributed in the tower body from the top to the bottom; a collector and a distributor are respectively arranged among layers of filler; and the separated glycerol in each layer is collected, is continuously and evenly distributed on a filling layer upwards through the distributors, and is continuously distributed.
Description
technical field [0001] The invention relates to a glycerin distillation process, in particular to a glycerin distillation process for achieving high purity of glycerin through three-step distillation. In order to realize the process, the present invention also relates to a dedicated glycerin distillation tower. Background technique [0002] In the production process of traditional glycerin distillation tower, chemical reactions such as cracking and polymerization are prone to occur, and various impurities such as aldehydes, ketones and polymerized glycerin are generated, and the separation ability of each component in the distillation process is poor, and the purity of the produced glycerin is not high. About 98% or so. Contents of the invention [0003] The invention provides a glycerin distillation process, which can effectively separate impurities in the glycerin to obtain refined glycerin with a content of about 99.5%; in order to achieve the purpose, the invention al...
Claims
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IPC IPC(8): C07C31/22C07C29/80B01D3/22
Inventor 丁正伦成取林陶成来
Owner 南通凯塔化工科技有限公司