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Sodium stearate and continuous production process and production line thereof

A technology of sodium stearate and production process, applied in the field of saturated compounds, can solve the problems of easy yellowing of product color, product decomposition and deterioration, and high reaction temperature, and can reduce the production of acidic soap, reduce water consumption, and achieve high purity of finished products. Effect

Active Publication Date: 2016-12-07
WENZHOU CHEM MATERIAL FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this patent, the reaction temperature is relatively high, which easily causes the product to decompose and deteriorate, and the color of the product tends to turn yellow, and batch production is still adopted, and the production capacity is low.

Method used

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  • Sodium stearate and continuous production process and production line thereof
  • Sodium stearate and continuous production process and production line thereof
  • Sodium stearate and continuous production process and production line thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A continuous production process of sodium stearate, comprising the following steps:

[0042]Step S01, preparing raw materials for preparing sodium stearate, the raw materials include: 710 parts of stearic acid, 100 parts of sodium hydroxide flakes, and 8.1 parts of sodium carbonate; wherein the average particle size of sodium carbonate is 0.1 μm;

[0043] Step S02, feeding: close the passage valve between the feeding tank and the reaction tank, add stearic acid from the feeding port on the left side of the feeding tank, mix the flake sodium hydroxide and sodium carbonate, and add it from the feeding port on the right side of the feeding tank , close the feeding ports on both sides, rotate the feeding cylinder around the central axis for 60 minutes at a speed of 30rpm to make the materials evenly mixed, open the feeding ports on both sides, open the channel valve, and let the evenly mixed materials enter the reaction tank;

[0044] Step S03, reaction: close the upstream ...

Embodiment 2

[0048] A continuous production process of sodium stearate, comprising the following steps:

[0049] Step S01, preparing raw materials for preparing sodium stearate, the raw materials include: 710 parts of stearic acid, 105 parts of sodium hydroxide in flake form, and 48.9 parts of sodium bicarbonate; wherein the average particle size of sodium carbonate is 0.5 μm;

[0050] Step S02, feeding: close the channel valve between the feeding tank and the reaction tank, add stearic acid from the feeding port on the left side of the feeding tank, mix the flake sodium hydroxide and sodium bicarbonate, and then add stearic acid from the feeding port on the right side of the feeding tank Add, close the feeding ports on both sides, and rotate the feeding cylinder around the central axis for 90 minutes at a speed of 60rpm to make the materials evenly mixed, open the feeding ports on both sides, and open the passage valve, so that the evenly mixed materials enter the reaction tank;

[0051] ...

Embodiment 3

[0055] A continuous production process of sodium stearate, comprising the following steps:

[0056] Step S01, preparing raw materials for preparing sodium stearate, the raw materials include: 710 parts of stearic acid, 103 parts of flake sodium hydroxide, and 28.5 parts of hydrogen peroxide;

[0057] Step S02, feeding: close the passage valve between the feeding tank and the reaction tank, add stearic acid from the feeding port on the left side of the feeding tank, mix the flake sodium hydroxide and hydrogen peroxide, and then add stearic acid from the feeding port on the right side of the feeding tank Add, close the feeding ports on both sides, rotate the feeding cylinder around the central axis for 75 minutes at a speed of 45rpm, make the materials mix evenly, open the feeding ports on both sides, open the channel valve, and let the evenly mixed materials enter the reaction tank;

[0058] Step S03, reaction: close the upstream and downstream channel valves of the reaction cy...

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Abstract

The invention discloses sodium stearate and a continuous production process and production line thereof. The production process includes: preparing materials: stearic acid, tablet sodium hydroxide and a catalyst; closing a channel valve, adding the materials from a feed port, mixing well the materials, and charging a mixture into a reaction cylinder through the channel valve; closing the channel valve of the reaction cylinder, keeping a certain level of pressure in the reaction cylinder, and heating to obtain a semi-finished product; measuring pH value of the semi-finished product, starting a pressure regulator, and starting a heating device to distill water under reduced pressure; crushing the obtained dry sodium stearate into micro-particles, and automatically packaging to obtain the finished stearate; the continuous production line comprises a feeding cylinder, a reaction cylinder, a separating cylinder and a packaging unit that are connected in sequence. The continuous production process is used for the sodium stearate, the target product with high purity and quality is prepared, the requirement for batch continuous production is met, and production cost is further reduced.

Description

technical field [0001] The invention relates to the field of saturated compounds with only one carboxylic acid connected to a non-hydrogen atom, in particular to a sodium stearate and its continuous production process and production line. Background technique [0002] Sodium stearate, also known as sodium octadecanoate, is a type of stearate and belongs to anionic surfactants, which can be used as stabilizers, anti-aging agents, softeners, lubricants, detergents, emulsifiers , dispersant, foaming agent, etc., are widely used in plastic processing, coating industry, rubber field, pharmaceutical field, cosmetics industry, and sodium stearate is also a raw material for preparing stearate, which is a very important chemical product . [0003] Commonly used sodium stearate preparation methods mainly include: one, adopt wet method to react synthetic product in water phase, this method reaction temperature is lower, but this method adopts a large amount of water, more serious to e...

Claims

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Application Information

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IPC IPC(8): C07C51/41C07C53/126
CPCC07C51/412C07C53/126
Inventor 李冠豪李司元李兰生夏长富
Owner WENZHOU CHEM MATERIAL FACTORY
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