Gas phase SO3 film-scrapping sulfonating technology

A technology of scraping film and gas phase, which is applied in the field of gas phase SO3 scraping film sulfonation process, can solve the problems of unguaranteed product conversion rate, unsuitable sulfonation of heat-sensitive materials, and high difficulty of circulating spray, so as to overcome the problems of easy atomization and prolongation. Sulfonation time, small investment effect

Inactive Publication Date: 2009-06-03
ZANYU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above patents all achieve cooling and increase product conversion rate through the circulation of sulfonated products. For products with high viscosity after reaction, it is difficult to circulate and spray, and side reactions are prone to occur, which affects product quality.
CN 1973989 is a gas injection sulfonation process with a high-speed gas phase as the working medium. The required conversion rate can be achieved without a single injection cycle. The instantaneous temperature is very high, prone to sulfonation reaction, the color of the product is deep, not suitable for sulfonation of heat-sensitive materials

Method used

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  • Gas phase SO3 film-scrapping sulfonating technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0030] Embodiment 2, the sulfonation of fatty alcohol ether: liquid SO 3 It enters the evaporator by metering, after vaporization, it is cooled by the cooler, the temperature is 42-45°C, it enters from the bottom of the sulfonation reactor, and is mixed with the dilution gas in the sulfonation reactor in the stirring shaft to form a reaction gas (control the gas volume concentration) : 3%), the reaction gas enters the reaction cylinder through the reaction gas distribution hole on the top of the stirring shaft from bottom to top at a speed of 20m / s, and flows downward with the fatty alcohol polyoxyethylene ether (3) (average molar mass 340 ) for full contact reaction, control the sulfonation temperature: 33~35℃, liquid SO 3 / fatty alcohol polyoxyethylene ether (3) molar ratio: 1.01:1; after the sulfonated product is discharged from the outlet of the reaction product, it is neutralized with triethanolamine to obtain triethanolamine sulfate of fatty alcohol ether.

Embodiment 3

[0031] Embodiment 3, toluene sulfonation: liquid SO 3 It enters the evaporator by metering, after being vaporized, it is cooled by a cooler at a temperature of 35-38°C, and enters from the bottom of the sulfonation reactor, and the reaction gas is mixed with the dilution gas in the sulfonation reactor in the stirring shaft (to control the gas volume concentration) : 5.0%), the reaction gas enters the reaction cylinder from bottom to top through the reaction gas distribution hole on the upper part of the stirring shaft at a speed of 10m / s, and contacts and reacts with toluene flowing downward, and the sulfonation temperature is controlled: 13~15℃ , liquid SO 3 / toluene molar ratio: 1:1; after the sulfonation product is discharged from the outlet of the reaction product, it is aged to obtain the toluenesulfonic acid product.

Embodiment 4

[0032] Example 4, Preparation of Petroleum Sulfonate by Sulfonation of Petroleum Diesel Wax: Liquid SO 3 It enters the evaporator by metering, after vaporization, it is cooled by a cooler, the temperature is 60-62°C, it enters from the bottom of the sulfonation reactor, and is mixed with the dilution gas in the sulfonation reactor in the stirring shaft to form a reaction gas (control the gas volume concentration) : 3.5%), the reaction gas enters the reaction cylinder from bottom to top through the reaction gas distribution hole on the upper part of the stirring shaft at a speed of 6m / s, and fully contacts and reacts with the downstream petroleum diesel wax. The sulfonation temperature: 65 ~68°C, control the neutralization value of the sulfonated product: 80~100KOHmg / kg; after the sulfonated product is discharged from the outlet of the reaction product, it is neutralized with 25% ammonia water to obtain petroleum ammonium sulfonate.

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Abstract

The invention relates to a gas phase SO3 film-scraping sulfonating technology which belongs to the technical field of production technology which prepares anionic surfactant by using gas phase SO3 film-scraping sulfonating liquid organic materials. The invention is carried out according to the following steps: A: liquid SO3 is vaporized to gas phase SO3, the gas phase SO3 is sucked in a mixer shaft through a turbo-blower, the gas phase SO3 is mixed with inert gases recycled in a sulfonating reactor to reaction gas with the volume concentration being 0.1 to 10 percent, and then the reaction gas goes into a reaction cylinder body through reaction gas distribution holes on the upper part of the scraping plate shaft; B: the organic materials go into the sulfonating reactor and downwards flow along the inner wall of the reaction cylinder body, a scraping plate is rotated along with the mixer shaft under the action of a transmission system, the organic materials are continuously suffered with film scaping-spread coating-film scaping in the inner wall of the reaction cylinder body, the organic material are alternately updated and uniformly coated on the inner wall of the reaction cylinder body, and the organic materials are completely contacted and reacted with the reaction gas which goes from the reaction gas distribution holes to form reaction products. The design of the technology is reasonable, and the invention can be suitable for sulfonating or sulphating materials with various viscosities.

Description

technical field [0001] The present invention relates to a kind of gas phase SO 3 Wiped film sulfonation process, belongs to gas phase SO 3 The technical field of production technology for preparing anionic surfactant by sulfonating liquid organic materials by scraping film. Background technique [0002] At present, in the surfactant industry, anionic surfactants are the earliest developed, largest and most widely used products. gas phase SO 3 The process of sulfonating / sulfating organic materials for sulfonating agents is the most widely used process technology for industrial production of anionic surfactants. gas phase SO 3 The sulfonation / sulfation process as a sulfonating agent includes: SO 3 / Air generation system, sulfonation reaction system, tail gas absorption system. SO 3 / Air generating system including air drying unit and SO 3 generator, SO 3 Occurrence is mostly prepared by burning sulfur. According to the different sulfonators in the sulfonation reacti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07B45/02B01J10/02
Inventor 方银军夏雄燕邹欢金
Owner ZANYU TECH GRP CO LTD
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