Dissolution tank for drug level benzoic acid production and operation method

A production method and technology of dissolving tank are applied in the field of dissolving tank and water-dissolving method to produce pharmaceutical grade benzoic acid, which can solve the problems of low steam enthalpy, low utilization efficiency, power consumption, etc. Effect

Inactive Publication Date: 2015-04-15
天津东大药业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This production method consumes electric energy, and the enthalpy of t

Method used

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  • Dissolution tank for drug level benzoic acid production and operation method
  • Dissolution tank for drug level benzoic acid production and operation method
  • Dissolution tank for drug level benzoic acid production and operation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] Embodiment: first put mother liquor into the dissolving tank, automatically control and quantitatively add 4000kg of mother liquor through the liquid level controller, then add 285kg of industrial benzoic acid raw materials, and open the induced draft system at the same time to extract the dust and steam in the tank to prevent the tank from producing positive Then open the steam valve to raise the temperature for 10 minutes. After the temperature rises to 102°C, reduce the steam intake to keep warm and further dissolve the solution. After the dissolution is complete, stop steaming and settle in a static state. After 15 minutes, the impurities naturally settled to the bottom of the dissolution tank under the action of gravity. After the complete settlement was observed through the sight glass, the air induction was stopped, and then the slag discharge port was opened to discharge the impurities to the slag discharge tank, and finally the feeding pump was turned on to trans...

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Abstract

The invention provides a dissolution tank for drug level benzoic acid production and an operation method. The dissolution tank is divided into three parts including a butterfly-shaped sealing opening at the upper part, a straight cylinder at the middle part and a conical body at the lower part. The sealing opening at the upper part is provided with a steam inlet (13) in the middle; a steam inlet pipe is directly communicated with the conical body at the lower part; a steam distributor (15) is mounted at the tail end of a steam pipe; a raw material inlet (1), an air induction opening (2), a temperature sensor (4), a manhole (5) and a liquid level controller (14) are arranged at the top of the butterfly-shaped sealing opening; a mother liquor inlet (6) is arranged at the upper end of the straight cylinder; a discharging opening (10) and sight glass (12) are arranged at the lower end of the straight cylinder; a slag-out opening (11) is arranged at the bottom end of the conical body; two pairs of the sight glass are arranged at the upper part of the conical body; and one pair of sight glass is arranged at the lower part of the conical body. The dissolution tank for drug level benzoic acid production provided by the invention changes a heating and stirring manner of the dissolution tank, so that the heat energy use ratio is improved; the energy can be saved; the raw materials can be saved; the environment is protected; and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and medicine, in particular to a dissolution tank and an operation method for producing pharmaceutical-grade benzoic acid by a water-soluble method. Background technique [0002] The principle of producing benzoic acid by the water-soluble method is to dissolve the industrial acid in high-temperature water according to the different solubility of benzoic acid at different temperatures, remove the insoluble organic impurities, and then crystallize the benzoic acid solution by cooling, centrifugal drying, drying and drying Drying and other processes, the benzoic acid is further purified, so as to reach the pharmaceutical grade benzoic acid standard. [0003] In the production process of the original water-soluble pharmaceutical drug benzoic acid, the structure of the dissolution tank in the dissolution process is that the dissolution tank is provided with 7-jacket, the jacket is provided w...

Claims

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Application Information

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IPC IPC(8): B01F1/00B01F13/02B01F15/06C07C63/06C07C51/42B01F33/40
Inventor 赵富贵
Owner 天津东大药业有限公司
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