Unlock instant, AI-driven research and patent intelligence for your innovation.

Fuming sulfuric acid neutralization treatment apparatus and fuming sulfuric acid neutralization treatment process for sulfonation production

A technology of oleum and treatment device, which is applied in combination devices, chemical instruments and methods, dispersed particle separation, etc., can solve the problems of affecting the surrounding environment of the production workshop, short contact time between oleum and lye, and short process, etc. Achieve pH stability, prolong time and reduce load

Active Publication Date: 2015-08-26
GUANGZHOU LIBY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The fuming sulfuric acid treatment in the prior art usually uses compressed air to directly press the collected fuming sulfuric acid into the alkali washing tower for absorption. Due to the short flow process and the short contact time between fuming sulfuric acid and lye, this treatment method makes more oleum Nicotinic acid cannot be absorbed in time and escapes from the alkali tower, forming a large amount of white acid mist at the outlet of the tail gas, accompanied by a severe pungent smell, which affects the surrounding environment of the production workshop

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fuming sulfuric acid neutralization treatment apparatus and fuming sulfuric acid neutralization treatment process for sulfonation production
  • Fuming sulfuric acid neutralization treatment apparatus and fuming sulfuric acid neutralization treatment process for sulfonation production
  • Fuming sulfuric acid neutralization treatment apparatus and fuming sulfuric acid neutralization treatment process for sulfonation production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 As shown, the present invention is a nicotinic acid neutralization device used in sulfonation production, and the device includes a nicotinic acid neutralization tank 10, a gas-liquid separator 20, an electrostatic demister 30, an alkali washing tower 40, and an alkali washing circulation pump 50, online pH meter 80, etc. The upper part of the nicotinic acid neutralization tank is connected to the gas-liquid separator 20, the gas-liquid separator 20 is connected to the electrostatic demister 30, and the electrostatic demister 30 is connected to the alkali washing tower 40 to form a gas treatment process. The alkali washing tower 40, the alkali washing tower circulating pump 50 and the online pH 80 are connected in series to form an alkali washing liquid circulation control system.

[0038] The nicotinic acid neutralization tank 10, the alkali washing circulation pump 50 and the alkali washing tower 40 are sequentially connected in series to form a circ...

Embodiment 2

[0049] Taking a 3.8t / h sulfonation unit in a sulfonation workshop as an example, under normal operation of the tail gas treatment system, the neutralization treatment of oleum is performed every 24 hours.

[0050] During processing, adjust the lye pH in the alkali washing tower 40 to more than 9, and open the control valve of the alkali washing tower circulation pump 50 to the oleum neutralization tank 10, so that the lye in the oleum neutralization tank 10 is in the system Circulating flow inside, open the valve between the fuming sulfuric acid neutralization tank of the fuming sulfuric acid collection pipe, use compressed air with a pressure of 0.2MPa, 3 The flow rate of / h blows the nicotinic acid in the sulfonated nicotinic acid collection pipe into the fuming sulfuric acid neutralization tank 10, closes the compressed air after 10 minutes, closes the inlet valve of the nicotinic acid neutralization tank 10 and the valve of the lye circulation pipe , that is to complete a ...

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 present invention discloses a fuming sulfuric acid neutralization treatment apparatus and a fuming sulfuric acid neutralization treatment process for sulfonation production. The fuming sulfuric acid neutralization treatment apparatus comprises a fuming sulfuric acid neutralization tank, a gas-liquid separator, an electrostatic demister, an alkali washing tower, an alkali washing circulating pump, a liquid caustic soda storage tank, and a liquid caustic soda pump, wherein the fuming sulfuric acid neutralization tank is communicated with the alkali washing tower, the upper portion of the fuming sulfuric acid neutralization tank is connected with the gas-liquid separator, the outlet of the gas-liquid separator is connected with the electrostatic demister, the outlet of the electrostatic demister is connected with the alkali washing tower, the liquid caustic soda storage tank is used for storing liquid caustic soda, and the liquid caustic soda is added to the alkali washing tower through the liquid caustic soda pump. According to the present invention, the apparatus and the process are used for the fuming sulfuric acid neutralization treatment during the trioxidation sulfonation production process, such that the phenomena such as large tail gas acid mist amount, more foaming, and excessive harmful tail gas due to the direct introduction of the fuming sulfuric acid into the alkali washing tower are avoided, and the tail gas treatment effect during the fuming sulfuric acid emission is effectively improved.

Description

technical field [0001] The invention relates to a fuming sulfuric acid neutralization treatment process, which belongs to the technical field of producing sulfonated products through a sulfur trioxide sulfonation process in the daily chemical industry, and in particular relates to a kind of neutralization treatment of fuming sulfuric acid in the production process of sulfur trioxide sulfonation Devices and processes. Background technique [0002] Surfactant raw materials commonly used in detergent products in the daily chemical industry, such as LAS, AES, AS, AOS, MES, etc., are usually produced through the sulfur trioxide sulfonation process, and oleum will be produced during the sulfur trioxide sulfonation production process , Fuming sulfuric acid will have a serious impact on equipment and product quality, therefore, it is necessary to collect fuming sulfuric acid in the production process and then carry out centralized treatment. [0003] The fuming sulfuric acid treatm...

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
no application Login to View More
IPC IPC(8): B01D53/78B01D53/48B01D50/00
Inventor 赵昶肖剑万爱华周西勇肖凤军
Owner GUANGZHOU LIBY