CN-122006578-A - Preparation system of high-active-content fatty alcohol polyoxyethylene ether sodium sulfate powder

CN122006578ACN 122006578 ACN122006578 ACN 122006578ACN-122006578-A

Abstract

The invention belongs to the technical field of fine chemical engineering, and provides a preparation system of high-active-content fatty alcohol polyoxyethylene ether sodium sulfate powder, which comprises a film scraping dryer and a powder shaper, wherein the powder shaper is connected to a discharge end of the film scraping dryer, the powder shaper comprises a cylinder body and a horizontal sieve plate arranged in the middle of the cylinder body, the horizontal sieve plate divides an inner cavity of the cylinder body into an upper cavity and a lower cavity, a rotatable shaping brush is arranged in the upper cavity, fine airflow holes are densely distributed on the surface of the shaping brush, the wall of the cylinder body of the lower cavity is provided with airflow holes, and the angle of the airflow holes is set to be 5-10 degrees towards the lower part of the cavity. The active matter content of the AES powder can reach 85% -92% stably, the particle size distribution of the powder particles is narrow, the fluidity is good, and the problems of product temperature rise, physical property change and fine powder generation caused by strong shearing can be avoided.

Inventors

RONG NANNAN
HU XIANZHI
LIU RUI
YIN JINHUA
ZHANG HAO
YANG XIANHAI
ZHANG YUMEI
MA XIAOXUE

Assignees

安徽金桐精细化学有限公司

Dates

Publication Date: 20260512
Application Date: 20260327

Claims (10)

1. The preparation system of the fatty alcohol polyoxyethylene ether sodium sulfate powder with high active matter content is characterized by comprising a film scraping dryer and a powder shaper, wherein the powder shaper is connected to the discharge end of the film scraping dryer; the powder forming device comprises a cylinder body and a horizontal sieve plate arranged in the middle of the cylinder body, wherein the horizontal sieve plate divides the inner cavity of the cylinder body into an upper cavity and a lower cavity; A rotatable forming brush is arranged in the upper cavity, and fine airflow holes are densely distributed on the surface of the forming brush; the cylinder wall of the lower cavity is provided with an air flow hole, and the angle of the air flow hole is set to be 5-10 degrees towards the lower part of the cavity.
2. The system for preparing high active content fatty alcohol polyoxyethylene ether sodium sulfate powder according to claim 1, wherein the horizontal screen is a vibrating screen.
3. The system for preparing high active content fatty alcohol polyoxyethylene ether sodium sulfate powder according to claim 1, wherein the wiped film dryer comprises a dryer, a condenser and a recoverer, wherein the condenser is communicated with a cavity of the dryer, and the recoverer is communicated with a cavity of the condenser.
4. The system for preparing high active content fatty alcohol polyoxyethylene ether sodium sulfate powder according to claim 3, wherein the dryer and the condenser are both provided with heat exchange jackets.
5. The preparation system of the high-active-content fatty alcohol-polyoxyethylene ether sodium sulfate powder according to claim 1, wherein the use method of the preparation system is as follows: And conveying the intermediate slurry to a scratch film dryer, conveying the sheet-shaped AES solid obtained by drying to a powder former, and forming by the powder former to obtain AES powder.
6. The preparation system of the high-active-content fatty alcohol-polyoxyethylene ether sodium sulfate powder according to claim 5, wherein the preparation method of the intermediate slurry is as follows: And (3) continuously stirring AEO acid ester obtained after the fatty alcohol polyoxyethylene ether and SO 3 are sulfonated with an auxiliary agent to perform a neutralization reaction, SO as to obtain a viscous AES intermediate slurry.
7. The system for preparing high active content fatty alcohol polyoxyethylene ether sodium sulfate powder according to claim 6, wherein the auxiliary agent comprises an organic solvent, a neutralizing agent, a pH buffer, a filler and a molding auxiliary agent.
8. The system for preparing high-active-content fatty alcohol-polyoxyethylene ether sodium sulfate powder according to claim 7, wherein the organic solvent comprises at least one of ethanol and isopropanol, the neutralizing agent comprises at least one of saturated sodium hydroxide aqueous solution, sodium hydroxide powder and sodium carbonate, the pH buffer comprises at least one of sodium citrate and sodium bicarbonate, the molding aid comprises at least one of anhydrous sodium sulfate and chitosan, and the molding aid comprises at least one of zeolite, montmorillonite, polyvinyl alcohol and polyethylene glycol.
9. The preparation system of the high-active-content fatty alcohol-polyoxyethylene ether sodium sulfate powder according to claim 5, wherein the operation temperature of film scraping and drying is 40-60 ℃ and the vacuum degree is-0.060-0.095 MPa.
10. The preparation system of the high-active-content fatty alcohol-polyoxyethylene ether sodium sulfate powder according to claim 5, wherein the temperature of cooling air flowing into the upper cavity is 5-25 ℃, and the temperature of secondary air flowing into the lower cavity is 20-40 ℃.

Description

Preparation system of high-active-content fatty alcohol polyoxyethylene ether sodium sulfate powder Technical Field The invention belongs to the technical field of fine chemical engineering, and particularly relates to a preparation system of fatty alcohol polyoxyethylene ether sodium sulfate powder with high active matter content. Background Sodium fatty alcohol polyoxyethylene ether sulfate is an anionic surfactant with excellent performance and wide application, and is often prepared into powder for convenient transportation, storage and application in solid detergents (such as washing powder). At present, one method for industrially preparing AES (sodium fatty alcohol polyoxyethylene ether sulfate) powder is described in Chinese patent CN101942082B, wherein AES material or AES material containing auxiliary agent is preheated to 35-85 ℃, and then enters a vacuum film scraping dryer for drying through a conveying pump to obtain AES with the water content lower than 5%, the dried material is frozen and sliced to obtain a flaky material, the flaky material is crushed into powder through a crusher, and the AES powder is obtained after sieving. The AES powder prepared by the method has obvious problem of poor uniformity of powder particles, and the problems of product temperature rise, physical property change and fine powder generation caused by strong shearing of the powder can further ensure that the content of active substances in the AES powder prepared finally by pure AES flaky materials is lower than 95 percent, and the content of active substances is further reduced after the auxiliary agent is added. Disclosure of Invention The application provides a preparation system of high-active-content fatty alcohol-polyoxyethylene ether sodium sulfate powder, which solves the technical problems that the AES powder prepared by the prior art has obvious poor uniformity of powder particles, and the product temperature rise, physical property change and fine powder generation caused by strong shearing of the powder are caused, so that the active material content is lower than 95% in the AES powder finally prepared by pure AES flaky materials, and the active material content is further reduced after an auxiliary agent is added, and realizes that the active material content of the finished AES powder can reach 85% -92% stably. The specific technical scheme is as follows: the invention provides a preparation system of high-active-content fatty alcohol polyoxyethylene ether sodium sulfate powder, which comprises a film scraping dryer and a powder shaper, wherein the powder shaper is connected to the discharge end of the film scraping dryer; the powder forming device comprises a cylinder body and a horizontal sieve plate arranged in the middle of the cylinder body, wherein the horizontal sieve plate divides the inner cavity of the cylinder body into an upper cavity and a lower cavity; A rotatable forming brush is arranged in the upper cavity, and fine airflow holes are densely distributed on the surface of the forming brush; the cylinder wall of the lower cavity is provided with an air flow hole, and the angle of the air flow hole is set to be 5-10 degrees towards the lower part of the cavity. According to the preparation system of the high-active-content fatty alcohol polyoxyethylene ether sodium sulfate powder, the horizontal sieve plate is a vibrating sieve plate. According to the preparation system of the high-active-content fatty alcohol polyoxyethylene ether sodium sulfate powder, the scratch film dryer comprises a dryer, a condenser and a recoverer, wherein the condenser is communicated with a cavity of the dryer, and the recoverer is communicated with the cavity of the condenser. According to the preparation system of the high-active-content fatty alcohol polyoxyethylene ether sodium sulfate powder, the dryer and the condenser are both provided with heat exchange jackets. According to the preparation system of the high-active-content fatty alcohol polyoxyethylene ether sodium sulfate powder, the application method of the preparation system is as follows: And conveying the intermediate slurry to a scratch film dryer, conveying the sheet-shaped AES solid obtained by drying to a powder former, and forming by the powder former to obtain AES powder. According to the preparation system of the high-active-content fatty alcohol polyoxyethylene ether sodium sulfate powder, the preparation method of the intermediate slurry comprises the following steps: And (3) continuously stirring AEO acid ester obtained after the fatty alcohol polyoxyethylene ether and SO 3 are sulfonated with an auxiliary agent to perform a neutralization reaction, SO as to obtain a viscous AES intermediate slurry. According to the preparation system of the high-active-content fatty alcohol-polyoxyethylene ether sodium sulfate powder, the auxiliary agent comprises an organic solvent, a neutralizing agent, a pH buffering agent, a filler and a forming