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Gas-phase SO3 sulfonation process and production system

A production system and sulfonation technology, applied in the field of gas-phase SO3 sulfonation process and related production systems, can solve problems such as inapplicability and affecting product quality, and achieve the effects of reducing sulfur consumption, reducing equipment investment, and good environmental effects

Inactive Publication Date: 2020-04-21
ZANYU TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the process still has an electrostatic defogging system, and the hazard of electrostatic acid still exists; after passing through the electrostatic demister, the tail gas still contains a small amount of organic acid droplets, and the product quality will be affected if it is not treated and reused; in addition, this process is only applicable to SO 3 The evaporative sulfonation process is not suitable for the common sulfur-burning sulfonation process

Method used

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  • Gas-phase SO3 sulfonation process and production system
  • Gas-phase SO3 sulfonation process and production system
  • Gas-phase SO3 sulfonation process and production system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] After sulfonation, the tail gas after gas-liquid separation is mixed with the oxygen input to the system, and then enters the sulfur furnace through the Roots blower; the oxygen amount is adjusted to control the oxygen concentration of the mixed gas entering the sulfur furnace to 22%.

[0034] At the same time, liquid sulfur enters the sulfur burning furnace at a flow rate of 400kg / h, contacts and burns in the sulfur burning furnace, adjusts the frequency of the Roots blower, and controls the burning sulfur temperature to 650℃. SO produced by combustion 2 The gas, according to the conventional process, is converted by the conversion tower and cooled by the cooler, SO 3 The filter finally obtains SO with a temperature of 60℃ 3 The gas enters the falling film sulfonation reactor; at the same time, dodecylbenzene enters the sulfonator at a flow rate of 2700kg / h, and is combined with SO 3 The gas contact performs the sulfonation reaction.

[0035] Maintain SO at the gas inlet of ...

Embodiment 2

[0042] After sulfonation, the tail gas after gas-liquid separation is mixed with oxygen in the input system, and enters the sulfur furnace through a Roots blower; the oxygen amount is adjusted to control the oxygen concentration of the mixed gas entering the sulfur furnace to 22%.

[0043] At the same time, liquid sulfur enters the sulfur-burning furnace at a flow rate of 300kg / h, and contacts and burns in the sulfur-burning furnace; adjusts the frequency of the Roots blower to control the sulfur combustion temperature at 650℃. SO produced by combustion 2 The gas, according to the conventional process, is converted by the conversion tower and cooled by the cooler, SO 3 The filter finally obtains SO with a temperature of 55℃ 3 The gas enters the falling film sulfonation reactor; at the same time, the fatty alcohol polyoxyethylene ether enters the sulfonator at a flow rate of 2500kg / h, and is combined with SO 3 The gas contact performs the sulfonation reaction.

[0044] Maintain SO at...

Embodiment 3

[0051] After sulfonation, the tail gas after gas-liquid separation is mixed with the oxygen input to the system, and enters the sulfur furnace through the Roots blower; the oxygen amount is adjusted to control the oxygen concentration of the mixed gas entering the sulfur furnace to 22%.

[0052] At the same time, liquid sulfur enters the sulfur burning furnace at a flow rate of 280kg / h, contacts and burns in the sulfur burning furnace, adjusts the frequency of the Roots blower, and controls the sulfur burning temperature to 600°C. SO produced by combustion 2 The gas, according to the conventional process, is converted by the conversion tower and cooled by the cooler, SO 3 The filter finally obtains SO with a temperature of 55℃ 3 The gas enters the falling film sulfonation reactor; at the same time, the alpha olefin enters the sulfonator at a flow rate of 1700kg / h, and the SO 3 The gas contact performs the sulfonation reaction.

[0053] Maintain SO at the gas inlet of the sulfonator ...

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Abstract

The invention belongs to the technical field of fine chemical engineering. The invention aims to provide a gas-phase SO3 sulfonation process and a production system thereof. The sulfonation system basically has no exhaust emission and good environmental effect, and meanwhile, dangerous solid wastes such as electrostatic acid and the like are not generated any more. According to a technical schemein the invention, the gas-phase SO3 sulfonation process comprises the following steps: 1) mixing tail gas having undergone gas-liquid separation after sulfonation with a certain flow of oxygen, conveying the obtained mixture into a sulfur burning furnace from a gas-phase inlet of the sulfur burning furnace through a Roots blower, and enabling liquid sulfur to enter the sulfur burning furnace froma liquid sulfur inlet of the sulfur burning furnace, and carrying out contact combustion in the sulfur burning furnace to generate SO2 gas; 2) subjecting the SO2 gas to conversion by a conversion tower, cooling by a cooler and filtering by an SO3 filter to remove a trace amount of nicotinic acid so as to obtain SO3 gas, and allowing the SO3 gas to enter a sulfonator and to contact with an organicmaterial input into the sulfonator from another inlet for a sulfonation reaction; and 3) subjecting a sulfonation product to gas-liquid separation, and recycling a gas phase to the step 1).

Description

Technical field [0001] The invention belongs to the technical field of fine chemicals, and specifically relates to a gas-phase SO for the production of anionic surfactants 3 Sulfonation process and related production system. Background technique [0002] In the field of industrial and civil surfactants, the sulfonation process is the basic production process for preparing anionic surfactant sulfonated products and sulfated products. Its products are widely used in the preparation of detergents, toothpastes, cosmetics and other civilian products, and are widely used in industrial fields such as oil extraction, mineral processing, metal cutting, pesticides, textiles, printing and dyeing, and leather. [0003] Currently commonly used sulfonation processes generally use gas phase SO 3 Sulfonation process, using lower gas concentration (generally 3 to 6%) SO 3 Air is mixed with the gas to be sulfonated in contact with organic materials. This technology SO 3 High utilization rate, relat...

Claims

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Application Information

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IPC IPC(8): C07C303/32C07C309/62C07C309/31C07C303/06B01D50/00C08G65/326
CPCB01D50/00C07C303/06C07C303/32C08G65/326C07C309/62C07C309/31
Inventor 史立文钟凯徐坤华郭霞雷小英陶华东黄晴邹欢金
Owner ZANYU TECH GRP CO LTD
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