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SO3 gas jetting sulfonation reactor and process

A technology of sulfonation reactor and gas injection, which is applied in chemical/physical/physicochemical nozzle reactors, chemical methods for reacting liquid and gaseous media, chemical instruments and methods, etc. High cost, over-sulfonation and other problems, to achieve the effect of flexible and simple operation, convenient raw material switching, and stable product quality

Active Publication Date: 2007-06-06
中轻化工绍兴有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of sulfonator has the following disadvantages: (1) The structure is complex, the equipment processing, manufacturing precision and installation precision are high, and the investment cost is large; (2) The operation flexibility is small, and the process conditions are strict, so it is not suitable for frequent operation and parking (3) Not suitable for sulfonation of organic substances such as waxy, difficult to form a film, easy to coke, and sensitive to heat
The disadvantage of the two is that the sulfonated product must be recycled multiple times to achieve the purpose of improving the conversion rate.
The viscosity of the sulfonated product (especially when the carbon chain is long) is much higher than that of the raw material, and the viscosity increases sharply when the conversion rate is high, which is not conducive to circulation and injection, and is easy to cause side reactions such as oversulfonation and oxidation, affecting product quality

Method used

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  • SO3 gas jetting sulfonation reactor and process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: Sulfonation of dodecylbenzene

[0022] SO 3 The gas jet sulfonation reactor is composed of a nozzle and a reactor body. The nozzle is composed of a gas nozzle 3, a liquid distribution chamber 4, an atomization nozzle 5, a liquid phase raw material inlet 1 and a mixed gas inlet 2. The gas nozzle 3 and The mixed gas inlet 2 communicates with and is fixed on the top of the liquid distribution chamber 4, the liquid phase raw material inlet 1 is located at the lower part of the side of the liquid distributor 4, the atomizing nozzle 5 is fixed in the liquid distribution chamber 4, and the lower part of the gas nozzle 3 enters the atomizing nozzle 5 , the top of the atomizing nozzle 5 is open, the position of the top of the atomizing nozzle 5 in the liquid distribution chamber 4 is higher than the position of the liquid phase raw material inlet 1 in the liquid distribution chamber 4, the nozzle is fixed on the top of the reactor body 7, and the mist The lower pa...

Embodiment 2

[0024] Embodiment 2: the sulfonation of toluene

[0025] Toluene (average molar mass: 92) is continuously converted from SO at a flow rate of 5.8kg / h at 5°C to 10°C 3 The liquid phase inlet 1 of the gas jet sulfonation reactor enters the liquid distribution chamber 4, then overflows into the atomizing nozzle 5 through the top of the atomizing nozzle 5, and then flows downward along the inner wall of the atomizing nozzle 5, SO 3 / air (volume ratio 6%) mixed gas by SO at 55°C 3 The gas phase inlet 2 of the gas injection sulfonation reactor enters the gas nozzle 3, and the gas velocity ejected from the gas nozzle 3 is 218m / s, SO 3 / alkylbenzene feed molar ratio 1.03:1, SO 3 / Air mixed gas is in contact with the organic material and is sprayed from the atomizing nozzle 5 into the reactor body 7 for reaction. The reaction time in the reactor body 7 is 1 second, and the obtained sulfonation reaction product and unreacted SO 3 / air mixture from SO 3 After the product outlet 8 of ...

Embodiment 3

[0026] Example 3: Sulfation of polyoxyethylene lauryl ether (n=3)

[0027] Lauryl alcohol polyoxyethylene ether (n=3, hereinafter referred to as AEO 3 , average molar mass 326) at a flow rate of 16.3kg / h at 32°C continuously from SO 3 The liquid phase inlet 1 of the gas jet sulfonation reactor enters the liquid distribution chamber 4, then overflows into the atomizing nozzle 5 through the top of the atomizing nozzle 5, and then flows downward along the inner wall of the atomizing nozzle 5, SO3 / air (volume ratio 3.5%) mixed gas by SO at 55°C 3 The gas phase inlet 2 of the gas injection sulfonation reactor enters the gas nozzle 3 and the gas velocity ejected from the gas nozzle 3 is 195m / s, SO 3 / alkylbenzene feed molar ratio 1.03:1, SO 3 / Air mixed gas is in contact with the organic material and is sprayed into the reactor body 7 from the atomizing nozzle 5 to react. The reaction time in the reactor body 7 is 3 seconds, and the obtained sulfonation reaction product and unrea...

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PUM

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Abstract

The SO3 gas jetting sulfonation reactor consists of a nozzle and a reactor kettle. The nozzle includes a gas jet, a liquid distributing cavity, an atomizing jet, a liquid material inlet and a gas mixture inlet. The nozzle is fixed in the top of the reactor kettle, the atomizing jet is stretched into inside of the reactor kettle, and the reactor kettle has product outlet in the lower end. The present invention is suitable for sulfonating different kinds of organic material, and has the advantages of reasonable structure, great operation flexibility, simple operation, easy material replacement, stable product quality, etc.

Description

technical field [0001] The invention relates to a device for preparing anion surfactant by sulfonating organic matter with sulfur trioxide gas and its application process. Background technique [0002] The surfactant industry is one of the important components of the fine chemical industry. In recent years, it has developed rapidly at home and abroad. The sulfonation reaction is the most important technology for the production of anionic surfactants. Fuming sulfuric acid, chlorosulfonic acid, and sulfur trioxide gas are commonly used as sulfonating agents in industry to produce alkylbenzene sulfonate (LAS), fatty alcohol / alcohol ether sulfate (AS / AES), and α-olefin sulfonate (AOS), fatty acid methyl ester sulfonate (MES) and other anionic surfactants. Among them, the first two sulfonation processes were gradually eliminated due to serious environmental pollution, inability to handle waste acid, and poor product quality. At present, the main equipment for producing anionic ...

Claims

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Application Information

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IPC IPC(8): B01J10/00B01J19/26C07B45/02
Inventor 韩亚明牛金平李秋小韩向丽
Owner 中轻化工绍兴有限公司
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