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Hybrid vaporizer and application thereof to preparation of sulfonated or sulfated product from liquid sulfur trioxide

A technology of liquid sulfur trioxide and sulfur trioxide, which is applied in the direction of sulfuric acid ester preparation, sulfonic acid preparation, chemical instruments and methods, etc., can solve the problem that the pressure of the gas mixture cannot be adjusted, and achieve high conversion rate, good repeatability, color and luster shallow effect

Active Publication Date: 2011-01-19
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 method is used to obtain the sulfur trioxide gas mixture. The device is dispersed and includes a vaporization chamber and a mixing chamber, and the pressure of the gas mixture cannot be adjusted. It is only suitable for the preparation of medium and low viscosity sulfonated or sulfated products at the reaction temperature.

Method used

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  • Hybrid vaporizer and application thereof to preparation of sulfonated or sulfated product from liquid sulfur trioxide
  • Hybrid vaporizer and application thereof to preparation of sulfonated or sulfated product from liquid sulfur trioxide

Examples

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Effect test

Embodiment 1

[0021] Embodiment 1: Sulfonation of dodecylbenzene

[0022] The mixed vaporizer is composed of a shell 7, a liquid sulfur trioxide inlet 2 and a mixed gas outlet 6. There is a jacket 4 outside the shell 7, and an inert gas inlet 1 and a liquid sulfur trioxide inlet 2 are arranged on the top of the shell 7. There is a circulating water or steam outlet 3 at one end of the jacket 4 at the top of 7, a circulating water or steam inlet 5 at one end of the jacket 4 at the bottom of the shell 7, and a mixed gas outlet 6 at the bottom of the shell 7. The aspect ratio of the mixed vaporizer housing is 15.

[0023] Use nitrogen gas to stabilize the pressure of liquid sulfur trioxide at 0.15MPa, adjust the flow rate of liquid sulfur trioxide at 40°C to 200mL / h, and the flow rate of nitrogen gas to 41.1L / min. 1 and liquid sulfur trioxide inlet 2 enter the mixed vaporizer, the mixed vaporizer is heated by circulating water or steam through the jacket 4, and the temperature is controlled at...

Embodiment 2

[0024] Embodiment 2: the sulfation of fatty alcohol polyoxyethylene ether

[0025] Use nitrogen gas to stabilize the pressure of liquid sulfur trioxide at 0.15MPa, adjust the flow rate of liquid sulfur trioxide at 35°C to 200mL / h, and the flow rate of nitrogen gas to 55.4L / min. 1 and liquid sulfur trioxide inlet 2 enter the mixed vaporizer, the mixed vaporizer is heated by circulating water or steam through the jacket 4, and the temperature is controlled at 65°C. After stabilizing for 30 minutes, the outlet pressure of the mixed gas is adjusted to 0.1MPa through the pressure reducing valve, and then mixed The gas is cooled and the filter is adjusted to 30°C. By controlling the molar ratio of sulfur trioxide to organic material to be 1.01:1, that is, the flow rate of fatty alcohol polyoxyethylene ether (average molar mass is 326) is 1.5kg / h. Sulfur oxide mixed gas and organic materials enter and flow down from the top of the sulfonation reactor to complete the sulfation reactio...

Embodiment 3

[0026] Example 3: Sulfonation of heavy alkylbenzenes

[0027] Use nitrogen gas to stabilize the pressure of liquid sulfur trioxide at 0.13MPa, adjust the flow rate of liquid sulfur trioxide at 42°C to 200mL / h, and the flow rate of nitrogen gas to 32.6L / min. 1 and liquid sulfur trioxide inlet 2 enter the mixed vaporizer, the mixed vaporizer is heated by circulating water or steam through the jacket 4, and the temperature is controlled at 80°C. After stabilizing for 30 minutes, the outlet pressure of the mixed gas is adjusted to 0.3MPa through the pressure reducing valve, and then mixed The gas is cooled and the filter is adjusted to 60°C. By controlling the molar ratio of sulfur trioxide to organic material to be 1.5:1, that is, the flow rate of heavy alkylbenzene (average molar mass 265) is 0.81kg / h, and then the sulfur trioxide is mixed Gas and organic materials enter and flow down from the top of the sulfonation reactor to complete the sulfonation reaction. The heat of reac...

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Abstract

The invention discloses a hybrid vaporizer and application thereof to preparation of a sulfonated or sulfated product from liquid sulfur trioxide. The hybrid vaporizer consists of a shell (7), a liquid sulfur trioxide inlet (2) and a mixed gas outlet (6), and is characterized in that a jacket (4) is arranged outside the shell (7); the top of the shell (7) is provided with an inert gas inlet (1) and the liquid sulfur trioxide inlet (2); one end of the jacket (4) on the top of the shell (7) is provided with a circulating water or steam outlet (3); one end of the jacket (4) on the bottom of the shell (7) is provided with a circulating water or steam inlet (5); and the bottom of the shell (7) is provided with the mixed gas outlet (6). The hybrid vaporizer has the advantages of being applied to preparing the sulfonated or sulfated product with low viscosity, medium viscosity and high viscosity at the reaction temperature, along with adjustable pressure.

Description

technical field [0001] The invention relates to a mixed vaporizer and its application in preparing sulfonated or sulfated products from liquid sulfur trioxide. Background technique [0002] There are three main synthesis processes for sulfonated products: 1. Combustion of sulfur to produce sulfur dioxide gas, which is catalyzed and oxidized to sulfur trioxide and then reacts with organic materials to form sulfonated or sulfated products; 2. Produces sulfur trioxide and organic The reaction generates sulfonated or sulfated products; 3. Obtain gaseous sulfur trioxide from stable liquid sulfur trioxide, and perform sulfonated or sulfated products to generate sulfonated or sulfated products. The first one is widely used in industry. First, the solid sulfur is heated and melted with steam, and then filtered and quantitatively injected into the sulfur furnace. It reacts with dry process air to generate a certain concentration of sulfur dioxide gas, which is then converted into sul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J19/00C07C303/06C07C303/24C07C309/31C07C309/35C07C305/10
Inventor 杨效益张广良郭朝华冯书博靳春萍李慧芳耿卫东董辉卢建强
Owner 中轻化工绍兴有限公司
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