Dry process of dodecyl sodium sulfate

A sodium lauryl sulfate and drying process technology, which is applied in the direction of sulfuric acid ester preparation, drying solid materials, heating to dry solid materials, etc., can solve the problems of high moisture content in products, affecting product quality, and harsh drying conditions. Achieve the effects of reducing dust pollution and product loss, reducing the amount of tail gas treatment, and not easy to agglomerate and absorb moisture

A sodium lauryl sulfate and drying process technology, which is applied in the direction of sulfuric acid ester preparation, drying solid materials, heating to dry solid materials, etc., can solve the problems of high moisture content in products, affecting product quality, and harsh drying conditions. Achieve the effects of reducing dust pollution and product loss, reducing the amount of tail gas treatment, and not easy to agglomerate and absorb moisture

CN101456829AInactive Publication Date: 2009-06-17ZANYU TECH GRP CO LTD
2 Cites 16 Cited by

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dry process of dodecyl sodium sulfate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1: After measuring sodium lauryl sulfate with a water content of 70%, preheat it to 75°C in a preheater, and use a gear pump to enter the material into a vacuum drying with steam in a semi-atomized state under a pressure of 1MPa Then it is thrown to the four walls by the swirl plate, slides along the four walls and enters the vacuum scraper drying part with a vacuum degree of 6.0kPa for secondary drying. The moisture content of the dried material is about 2.5%, and then according to the conventional process , Extruded and granulated by a twin-screw extruder to obtain needle-shaped sodium lauryl sulfate products.

Embodiment 2

[0027] Example 2: After metering sodium lauryl sulfate with a water content of 60%, preheat it to 70°C in the preheater, and use a gear pump to put the material into the vacuum drying tube in a semi-atomized state under a pressure of 1.0MPa , and then throw it to the four walls through the swirl plate, slide down along the four walls and enter the vacuum scraper dryer with a vacuum degree of 6.5kPa for secondary drying. The moisture content of the dried material is about 2.0%, and then according to the conventional process, It is extruded and granulated by a twin-screw extruder to obtain needle-shaped sodium lauryl sulfate products.

Embodiment 3

[0028] Example 3: After metering sodium lauryl sulfate with a water content of 30%, preheat it to 75°C in a preheater, and use a screw pump to enter the material into a vacuum drying tube in a semi-atomized state under a pressure of 0.8MPa , and then throw it to the four walls through the swirl plate, slide down along the four walls and enter the vacuum scraper dryer with a vacuum degree of 7.0kPa for secondary drying. The moisture content of the dried material is about 1.5%, and then according to the conventional process, It is extruded and granulated by a twin-screw extruder to obtain needle-shaped sodium lauryl sulfate products.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a process for drying lauryl sodium sulfate, which belongs to the technical field of preparation of a surfactant in an organic compound. The method is carried out in a compound vacuum drier formed by a vacuum tube type spray drying part (A), an adapting tank (B) and a vacuum scraper drying part (C), and comprises the following steps: (1) preheating a lauryl sodium sulfate material in a preheater to the temperature of between 50 and 100 DEG C, and making the material be in a half atomized state and enter a vacuum drying tube with vapor in the vacuum tube type spray drying part (A) at a pressure of between 0.2 and 1.0MPa by a conveying pump, so that the moisture content of the material is reduced to 50 to 10 percent; (2) introducing the material into the vacuum scraper drying part (C) through the adapting tank (B) for secondary drying, so that the moisture content of the dried material is lower than 3 percent; and (3) according to the prior process, granulating the dried materials through a double screw extruder to manufacture an acicular product. The process has reasonable design, and can effectively improve the drying efficiency and product quality.

Description

technical field [0001] The invention relates to a drying process of sodium lauryl sulfate, which belongs to the technical field of preparation of surfactants in organic compounds. Background technique [0002] Sodium lauryl sulfate (trade name K 12 ), also known as sodium lauryl sulfate, is an anionic surfactant widely used at present. Because of its excellent decontamination, emulsification, foaming ability, non-toxic and good biodegradability, it is widely used in daily chemical industry, toothpaste, medicine, chemical industry, textile, electroplating, mineral processing and other fields. [0003] Industrially, sodium lauryl sulfate is made from lauryl alcohol through sulfation, neutralization, drying and other processes. The drying process can improve product stability and reduce packaging and transportation costs. However, due to sodium lauryl sulfate It is a heat-sensitive multi-foaming viscous substance. The drying conditions are very harsh. When the temperature is ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
17 Jun 2009
Publication
CN101456829A
IPC
C07C305/04; C07C303/24; C07C303/42; F26B17/10; F26B7/00; F26B3/12; F26B5/04; B01J2/20
Inventors
方银军; 吴红平