Refining equipment and refining process for phosphorus trichloride

A technology of phosphorus trichloride and equipment, which is applied in the field of phosphorus trichloride refining equipment and its technology, can solve the problems of difficulty in cooling the reaction kettle and insufficient cleaning of the rectification tower, and achieve the benefits of production and use and avoid explosion Effect

Inactive Publication Date: 2020-03-24
FUTONG CHEM
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Problems solved by technology

[0004] The object of the present invention is to provide a kind of phosphorus trichloride refining equipment and its process, to at least

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  • Refining equipment and refining process for phosphorus trichloride
  • Refining equipment and refining process for phosphorus trichloride
  • Refining equipment and refining process for phosphorus trichloride

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Embodiment Construction

[0024] 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.

[0025] see Figure 1-6 , the present invention provides a technical solution: a refining equipment for phosphorus trichloride, including a reactor 1, a chiller 2 and a rectification tower 3, and the reactor 1, chiller 2 and rectification tower 3 are arranged from left to right , also includes a cooling mechanism 4, a cold water pipe 5 and a scrubbing mechanism 6, the cooling mechanism 4 is detachably arranged on the outer wall of the reaction kettle 1, and one...

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Abstract

The invention discloses refining equipment and a refining process for phosphorus trichloride. The refining equipment comprises a reaction kettle, a cooling-water machine and a rectifying tower which are arranged from left to right, and also comprises: a cooling mechanism, which is detachably arranged on the outer wall of the reaction kettle; cold water pipes, one ends of which are respectively connected to a water inlet and a water outlet of the cooling-water machine, and the other ends of which are connected to the cooling mechanism; and a scrubbing mechanism, which is detachably arranged atthe top of the rectifying tower. The refining equipment can enable a heat dissipation cylinder to perform heat absorption comprehensively on the reaction kettle, avoids explosion caused by too high temperature during use of the reaction kettle, in addition, the inner wall of the rectifying tower can be comprehensively scrubbed to prevent free phosphorus impurities from hanging on the inner wall ofthe rectifying tower, and influence on the re-rectifying effect of phosphorus trichloride can be prevented, therefore the equipment is beneficial to the production and use of phosphorus trichloride.

Description

technical field [0001] The invention relates to the technical field, in particular to a phosphorus trichloride refining equipment and a process thereof. Background technique [0002] Phosphorus trichloride is an important chemical intermediate, widely used in organophosphorus pesticides, medicine, electronics, and dye industries, and is a rare catalyst and phosphorus solvent. In the refined production of phosphorus trichloride, it mainly includes the steps of melting, reaction, rectification, cooling and separation, and reaction and rectification are the most critical links in the process of phosphorus trichloride; [0003] Add yellow phosphorus, phosphorus trichloride mother liquor and chlorine gas into the reaction kettle to form phosphorus trichloride. During the reaction, the reaction speed is relatively fast and a large amount of heat will be generated. If the temperature cannot be lowered in time, it will easily cause an explosion. The distillation tower is used for t...

Claims

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Application Information

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IPC IPC(8): B01D3/14B08B9/087B01J19/00
CPCB01D3/14B01J19/00B08B9/087
Inventor 赵志强张虎
Owner FUTONG CHEM
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