Device and method for removing moisture and heteroacids in acetic acid

A technology of phase separation device and acetic acid aqueous solution, which is applied in chemical instruments and methods, separation/purification of carboxylic acid compounds, preparation of carboxylate, etc. It can solve the problems of complex removal, incomplete removal of moisture and impurity acids, etc. Achieve the effects of increasing the content of acetic acid, reducing the limitation of equipment material selection, and increasing the yield

Active Publication Date: 2015-06-03
烟台国邦化工机械科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the deficiencies in the prior art, the present invention provides a device method for removing moisture and impurities in acetic acid, which solves the problem of incomplete and complex removal of moisture and impurities in traditional acetic acid

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  • Device and method for removing moisture and heteroacids in acetic acid

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Embodiment Construction

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0023] A device for removing moisture and impurity acids in acetic acid, comprising a reaction kettle 1, a scraped film evaporator 2, an azeotropic rectification tower 3, an entrainer recovery tower 7, and the first two sides of the entrainer recovery tower 7 A phase separation device 6 and the second phase separation device 10, the reaction kettle 1, the scraped film evaporator 2, the azeotropic rectification tower 3, the first phase separation device 6, the entrainer recovery tower 7 and the second separation The phase devices 10 are connected successively, the bottom of the second phase separation device 10 is connected with the top of the entrainer recovery tower 7, and the side wall of the second phase separatio...

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Abstract

The invention provides a method and a device for removing moisture and heteroacids in acetic acid, and aims at solving the problems of non-thorough removal and complex removal of moisture and heteroacids in the acetic acid by the conventional device and method. The device comprises a reaction kettle, a scraper film evaporator, an azeotropic distillation tower, an entrainer recovery tower, and a first phase splitting device and a second phase splitting device which are located on the two sides of the entrainer recovery tower, wherein the reaction kettle, the scraper film evaporator, the azeotropic distillation tower, the first phase splitting device, the entrainer recovery tower and the second phase splitting device are orderly communicated with each other, the bottom of the second phase splitting device is connected with the top end of the entrainer recovery tower, a loop connected with the first phase splitting device is arranged on the sidewall of the second phase splitting device, a backflow branch used as supplementary backflow is arranged on the bottom of the first phase splitting device, and the backflow branch is connected with the top end of the azeotropic distillation tower through the bottom of the first phase splitting device.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a device and method for removing moisture and impurities in acetic acid, in particular to a device for removing moisture and impurities in acetic acid by combining reaction and azeotropic distillation and methods. It belongs to the category of chemical separation, suitable for chemical, pharmaceutical and other industries involving the separation of moisture in acetic acid and miscellaneous acids. Background technique [0002] Acetic acid is a colorless liquid at normal temperature with a pungent odor. The boiling point at normal pressure is 118.1°C. Acetic acid is miscible with water, ethanol, ether, carbon tetrachloride and other commonly used organic solvents. Insoluble in carbon disulfide and higher aliphatic hydrocarbons above carbon 12. Can dissolve most resins and essential oils. Acetic acid is used as a solvent in the manufacture of rubber, plastics,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C53/08C07C51/487C07C51/46
CPCC07C51/46C07C51/487C07C53/08
Inventor 张燕毛学峰
Owner 烟台国邦化工机械科技有限公司
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