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Grignard hydrolysis two-phase separation synthesis method and device in maltol production

A synthesis method and phase separation technology, applied in chemical instruments and methods, chemical/physical/physical chemical fixed reactors, chemical/physical/physical chemical processes, etc., to achieve pure products, avoid extensive labor, and fully react

Active Publication Date: 2016-06-08
ANHUI JINGHE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problems existing in the traditional batch production of maltol, and to provide a method and device for Grignard hydrolysis two-phase separation synthesis in the production of maltol

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  • Grignard hydrolysis two-phase separation synthesis method and device in maltol production

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Embodiment 1

[0013] The invention provides a Grignard hydrolysis two-phase separation and synthesis device in the production of maltol, which includes a hydrolysis kettle, a dripping tank, and a stirrer, and is characterized in that:

[0014] Change the discharge port of the original Grignard hydrolysis reactor from diameter?=100mm to diameter?=200mm. After installing the solenoid valve, connect the upper end diameter? The lower end of the variable-diameter hose is connected to the upper port of the filter cartridge with a diameter of 1000 mm, and the outlet at the bottom of the filter cartridge is connected to the upper part of the hydrolysis kettle through a circulating pump.

[0015] The invention provides a kind of Grignard hydrolysis two-phase separation synthesis method in the production of maltol, comprising the steps of feeding, stirring and filtering, characterized in the following steps:

[0016] a. Put a pot of Grignard reagent (magnesium 80Kg) in a 3000L enamel hydrolysis kettl...

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Abstract

The invention belongs to the technical field of maltol production, and particularly relates to a Grignard hydrolysis two-phase separation synthesis method and device in maltol production. The method comprises the following steps: a. after raw materials enter a hydrolysis kettle, dropwisely adding an ammonium chloride solution to react for 3-3.5 hours, starting a solenoid valve on the bottom of the hydrolysis kettle when starting generating solid residues, putting the material into a filter drum on the lower part for filtration, leaving the solid residue on a cloth filter in the filtering funnel, and lifting the filtrate from the bottom to the inside of the kettle by a circulating pump to continue the reaction; and b. reacting for 3.8-4.2 hours, stopping stirring, putting the bottom material into the filter drum for filtration, circulating the filtrate into the kettle by the circulating pump, disconnecting the filter drum when the separation is finished, and transporting the filter drum to a solid residue recovery section by a fork truck. By improving the production device and optimizing the technical process on the basis of the original production, the reaction and separation are performed synchronously, thereby enhancing the Grignard section yield, lowering the solvent consumption and enhancing the productivity.

Description

technical field [0001] The invention belongs to the technical field of maltol production, in particular to a Grignard hydrolysis two-phase separation synthesis method and device in maltol production. Background technique [0002] Maltol is an additive widely used to enhance the flavor and sweetness of food. The traditional method of producing maltol is a batch method, that is, the raw materials are added dropwise in the hydrolysis tank, and a one-step Grignard hydrolysis reaction occurs in the same reactor. Then proceed to the next step of processing. This method not only has a low conversion rate, a large amount of solvent volatilization, a large electric stirring load, and poor operation stability. Contents of the invention [0003] The purpose of the present invention is to solve the problems existing in the traditional maltol batch production, and to provide a Grignard hydrolysis two-phase separation synthesis method and device in the maltol production. [0004] A k...

Claims

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Application Information

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IPC IPC(8): C07D309/40B01J19/18
CPCB01J19/0053B01J19/18B01J2219/00761C07D309/40
Inventor 陈月安程光锦秦基楼
Owner ANHUI JINGHE IND
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