Sodium cyclamate production process and device

A production process and production device technology, applied in the fields of food science, application, amide sulfate preparation, etc.

Pending Publication Date: 2021-09-14
金城化学(江苏)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the synthesis process of cyclamate

Method used

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  • Sodium cyclamate production process and device

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Sulfamic acid (3975kg, 40.9kmol) was added to the neutralization tank 1, and then in the reactor 6, dilute cyclohexylamine with a concentration of 40% was added dropwise until the pH of the reaction solution was 6.8, and the reaction solution was transferred to the reactor 6 Inside, be heated to 50 ℃ and concentrate reaction solution, be concentrated to the material and become thick paste; Then in reactor 6, drip the concentrated cyclohexylamine (40.9kmol) that concentration is 90% to carry out reaction, and reaction temperature is 60 ℃, and reaction Process steam pressure is controlled at 0.1MPa, and NaOH (1636kg, 40.9kmol) is added in reactor 6 after the amine outlet 61 that is provided with on reactor 6 turns cold after 4 hours, then in reactor 6, adding concentration is 40% dilute Cyclohexylamine (15.9m 3 ), use dilute cyclohexylamine to take out the cyclohexylamine decomposed by the reaction, and the reaction is completed and purified, and the yield is 95%.

Embodiment 2

[0023] Sulfamic acid (4025kg, 41.5kmol) was added to the neutralization tank 1, and then in the reactor 6, a concentration of 50% dilute cyclohexylamine was added dropwise until the pH value of the reaction solution was 6.8, and the reaction solution was transferred to the reactor 6 Inside, be heated to 90 DEG C and concentrate reaction liquid, be concentrated to material and become thick paste; Then dropwise in reactor 6, concentration is the concentrated cyclohexylamine (43.6kmol) of 95% to react, and reaction temperature is 100 DEG C, reaction Process steam pressure is controlled at 0.3MPa, and NaOH (1709kg, 42.7kmol) is added in reactor 6 after the amine outlet 61 that is set on reactor 6 turns cold for 5 hours, then dilute cyclohexylamine (16.1 kmol) is added in reactor 6 m3), use dilute cyclohexylamine to take out the cyclohexylamine decomposed by the reaction, and the reaction is completed and purified, and the yield is 99%.

Embodiment 3

[0025] Sulfamic acid (4025kg, 41.5kmol) was added to the neutralization tank 1, and then in the reactor 6, dilute cyclohexylamine with a concentration of 50% was added dropwise until the pH of the reaction solution was 7.0, and the reaction solution was transferred to the reactor 6 Inside, be heated to 120 DEG C and concentrate reaction liquid, be concentrated to material and become sticky paste; Then dropwise in reactor 6, concentration is the thick cyclohexylamine (45.6kmol) of 99% to react, and reaction temperature is 150 DEG C, reaction Process steam pressure is controlled at 0.5MPa, and NaOH (1741kg, 43.5kmol) is added in reactor 6 after the amine outlet 61 that is set on reactor 6 turns cold 6 hours, then adds dilute cyclohexylamine (16.9 kmol) in reactor 6 m 3 ), with dilute cyclohexylamine to take out the cyclohexylamine decomposed by the reaction, the reaction is completed and purified, and the yield is 97%.

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Abstract

The invention discloses a sodium cyclamate production process and device, the device comprises a neutralization kettle, a reaction kettle and a dilute amine kettle, a discharge port of the dilute amine kettle is connected with a feed port of the neutralization kettle, the device also comprises a first condenser, the first condenser is connected with a gas discharge port arranged in the neutralization kettle, the first condenser is connected with a dilute amine tank, and the diluted amine tank is connected with a diluted amine kettle. The reaction kettle is provided with an amine outlet, the amine outlet is connected with a second condenser, the second condenser is connected with the dilute amine kettle, and a discharge port of the dilute amine kettle is connected with a feed port of the reaction kettle. According to the sodium cyclamate production process and device provided by the invention, the process operation is simple, and the yield is as high as 95-99%; the device adopts a circulating system, so that cyclohexylamine can be recycled, and the material cost is reduced.

Description

technical field [0001] The invention relates to the technical field of cyclamate synthesis methods, in particular to a cyclamate production process and device. Background technique [0002] The chemical name of sodium cyclamate is sodium cyclamate. It belongs to a synthetic sweetener. Its sweetness is 30 times that of sucrose, but its price is only 3 times that of sucrose. Moreover, it does not have a bitter taste when used in a small amount like saccharin, so it is used as It can be used in cool drinks, fruit juices, ice cream, cakes and preserves as an international food additive. However, there are few reports on the synthesis process of cyclamate at present. Contents of the invention [0003] For overcoming above-mentioned shortcoming, the object of the present invention is to provide a kind of production technique of cyclamate, comprising the following steps: [0004] S1. Add sulfamic acid into the neutralization kettle, then drop dilute cyclohexylamine into the neu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C307/02C07C303/34A23L27/30
CPCC07C303/34A23L27/30A23V2002/00C07C307/02A23V2250/246
Inventor 林嘉华
Owner 金城化学(江苏)有限公司
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