Auxiliary device for para-xylene production
A production auxiliary, p-xylene technology, which is applied in the direction of mobile filter element filter, crystallization separation, filtration separation, etc., can solve the problems of lower production efficiency, blockage of crystalline p-xylene, etc., increase production, reduce purity drop, The effect of a simple mechanical structure
Active Publication Date: 2022-01-04
东营威联化学有限公司
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[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0039] It should be noted that, in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or ...
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The invention discloses an auxiliary device for p-xylene production, and relates to the technical field of chemical equipment. The auxiliary device comprises a crystallization mechanism, wherein the crystallization mechanism comprises a crystallization barrel, the top of the crystallization barrel is rotationally connected with an upper sealing cover, and one side of the top of the upper sealing cover is fixedly connected with a feeding pipe communicating with the interior of the crystallization barrel, a cold air input mechanism communicating with the interior of the crystallization barrel is fixedly connected to one exterior side of the crystallization barrel, a conveying mechanism communicating with the interior of the crystallization barrel is fixedly connected to the bottom of the crystallization barrel, a purification mechanism communicating with the conveying mechanism is fixedly connected to one end of the conveying mechanism, and the purification mechanism comprises a distillation tank. According to the invention, a soluble salt solution is added into the distillation tank from a material injection pipe, so the reacted mixed xylene solution can enter a crystallization pipe again in a distillation manner for further crystallization and purification, the purification rate of p-xylene is improved by a simple mechanical device, and the yield of p-xylene is increased.
Description
technical field [0001] The invention relates to the technical field of chemical equipment, in particular to an auxiliary device for producing p-xylene. Background technique [0002] P-xylene is an important raw material for the polyester industry. During the production of p-xylene, a mixture of p-xylene, m-xylene, o-xylene and ethylbenzene will be produced. At present, there are two main technological processes for industrial separation of p-xylene: adsorption separation method and crystallization classification method. Since the difference between the boiling points of the components containing p-xylene mixture is small and the difference in melting point is relatively large, the crystallization method is the best way to separate p-xylene. One of the common methods of toluene. [0003] The Chinese invention patent with the publication number CN108794295A discloses a method for crystallization and separation of p-xylene. By shuttling the condenser tube inside and outside th...
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Login to View More IPC IPC(8): B01D9/02B01D3/42B01D33/01
CPCB01D9/0004B01D9/0063B01D3/42B01D33/0158B01D2009/0086
Inventor 郑同昌佟坤陈举侯典龙孙鹏鹏
Owner 东营威联化学有限公司