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Synthesis method of low-carbon sodium alcoholate

A synthesis method and technology for low-carbon alcohols, applied in the preparation of alcohol metal, organic chemistry, biofuels, etc., can solve the problems of low production efficiency, process danger, large heat release, etc.

Active Publication Date: 2021-09-10
江苏诺盟氢能技术有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual production, the batch method is mainly used for preparation, the reaction releases hydrogen gas, and the heat release is large. Metal sodium needs to be sliced ​​and added in batches. The production efficiency is low and there is a certain process risk.

Method used

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  • Synthesis method of low-carbon sodium alcoholate
  • Synthesis method of low-carbon sodium alcoholate

Examples

Experimental program
Comparison scheme
Effect test

preparation example

[0047] Towards figure 1 The shown loop reactor (reactor volume 5L) is fed into the reaction kettle with methanol at room temperature with 40% of the kettle volume through the low-carbon alcohol feed port 101, and hydrogen gas is introduced into the reaction system through the air inlet until the system pressure is 1 MPa, and the opening The circulation pump 4 makes the liquid in the kettle flow slowly, and the gas is emptied, and the air in the loop reactor is replaced 6 times. After the last replacement, keep the pressure of the reaction system at 0.3MPa, and raise the temperature to 70°C (about 10 minutes during the heating process), adjust the circulating pump 4 to increase the liquid flow rate to a liquid linear velocity at the nozzle of 60m / s, and maintain the system circulation.

[0048] Towards figure 1 The shown loop reactor (reactor volume 5L) feeds liquid sodium into the reactor through the liquid sodium feed port 102 (filling process 1.5h), and the total amount of ...

Embodiment 2

[0052] Preparation example of sodium methoxide

[0053] Towards figure 1 The shown loop reactor (reactor volume 5L) is fed into the reaction kettle with methanol at room temperature with 40% of the kettle volume through the low-carbon alcohol feed port 101, and hydrogen gas is introduced into the reaction system through the air inlet until the system pressure is 1 MPa, and the opening The circulation pump 4 makes the liquid in the kettle flow slowly, and the gas is emptied, and the air in the loop reactor is replaced 6 times. After the last replacement, keep the pressure of the reaction system at 0.3MPa, and raise the temperature to 70°C (about 10 minutes during the heating process), adjust the circulating pump 4 to increase the liquid flow rate to a liquid linear velocity at the nozzle of 60m / s, and maintain the system circulation.

[0054] Towards figure 1 The shown loop reactor (reactor volume 5L) feeds liquid sodium into the reactor through the liquid sodium feed port 10...

Embodiment 3

[0058] Preparation example of sodium methoxide

[0059] Towards figure 1 The shown loop reactor (reactor volume 5L) is fed into the reaction kettle with methanol at room temperature with 40% of the kettle volume through the low-carbon alcohol feed port 101, and hydrogen gas is introduced into the reaction system through the air inlet until the system pressure is 1 MPa, and the opening The circulation pump 4 makes the liquid in the kettle flow slowly, and the gas is emptied, and the air in the loop reactor is replaced 6 times. After the last replacement, keep the pressure of the reaction system at 0.3MPa, and raise the temperature to 70°C (about 10 minutes during the heating process), adjust the circulating pump 4 to increase the liquid flow rate to a liquid linear velocity at the nozzle of 60m / s, and maintain the system circulation.

[0060] Towards figure 1 The shown loop reactor (reactor volume 5L) feeds liquid sodium into the reactor through the liquid sodium feed port 10...

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Abstract

The invention discloses a synthesis method of low-carbon sodium alcoholate. The synthesis method takes anhydrous low-carbon alcohol and liquid metal sodium as raw materials and adopts a loop reactor to prepare the low-carbon sodium alcoholate. The chemical formula of the anhydrous low-carbon alcohol is CnH2n+1OH, and the value of n is 1-4. According to the present invention, the loop reactor is adopted, and the liquid metal sodium and the anhydrous low-carbon alcohol are adopted as the raw materials to prepare the low-carbon sodium alcoholate, so compared with the traditional intermittent kettle type process, the method adopting the liquid metal sodium as the reaction raw material has the advantages that the slicing operation of the solid metal sodium is avoided, and the operation risk is reduced.

Description

technical field [0001] The invention belongs to the technical field of chemical production, and in particular relates to a process method for continuous production of low-carbon sodium alkoxide using a loop reactor. Background technique [0002] Low-carbon sodium alcohols, such as sodium methoxide and sodium tert-butoxide, are important chemical intermediates with strong alkalinity and high activity. They are mainly used in the fields of medicine, organic synthesis, and biodiesel. Most of them are solids of low-carbon sodium alcohols. It is sold / used in 2 forms of state and low-carbon sodium alcohol / low-carbon alcohol solution. [0003] Common production methods of low-carbon sodium alkoxide include sodium hydroxide alcoholization method and metal sodium method. For example, the preparation of sodium methoxide usually adopts the sodium hydroxide methanol method, which is to dissolve sodium hydroxide in methanol to generate sodium methoxide. During the reaction, the water ge...

Claims

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Application Information

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IPC IPC(8): C07C29/70C07C31/30B01J19/26
CPCC07C29/70B01J19/26B01J2219/0072C07C31/30Y02E50/10
Inventor 梅华
Owner 江苏诺盟氢能技术有限公司
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