Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Chlorosulfonic acid production process and equipment thereof

A production process, chlorosulfonic acid technology, applied in the direction of sulfur-halogen-hydrogen-oxygen compounds, etc., can solve the problems of high energy consumption of circulating water, increase of equipment and pipelines, large cooling capacity of reaction gas, etc., to reduce tail gas The effect of emissions

Inactive Publication Date: 2010-07-14
聊城鲁西氯甲烷化工有限公司
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, a large amount of non-reactive gas is brought in with the gas, which increases the size of the device and pipeline
At the same time, the cooling capacity of the reaction gas is large, and the energy consumption of the circulating water is high. The bigger disadvantage is that it is not good for environmental protection. The SO in the furnace gas 2 Emissions need to be dealt with

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
  • Chlorosulfonic acid production process and equipment thereof
  • Chlorosulfonic acid production process and equipment thereof
  • Chlorosulfonic acid production process and equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of chlorosulfonic acid production technique:

[0025] The tail gas HCL gas from Lanwei benzyl chloride unit and chlorinated paraffin unit is cryogenically cooled to -30°C and then sent to the HCL dry scrubber. The HCL dry scrubber uses 98% sulfuric acid to circulate and absorb the moisture in the HCL gas. At the outlet of the dry scrubber, two fans, one on and one on, are used to pump the dry HCL gas to the gas buffer tank, and the HCL gas enters the refining tower from the gas buffer tank. At this time, the HCl gas concentration is above 99.5%. The chlorosulfonic acid crude product returned from the synthesis tower is recycled to absorb HCL gas, so that the excess SO in the chlorosulfonic acid crude product 3 The gas reacts completely with HCL gas, and the high-concentration chlorosulfonic acid finished product flows into the cold row from the bottom of the refining tower, flows into the chlorosulfonic acid buffer tank after exchanging heat in the cold row, and ...

Embodiment 2

[0029] A kind of chlorosulfonic acid production technique:

[0030] The tail gas HCL gas from Lanwei benzyl chloride unit and chlorinated paraffin unit is cryogenically cooled to -20°C and then sent to the HCL dry scrubber. The HCL dry scrubber uses 98% sulfuric acid to circulate and absorb the moisture in the HCL gas. At the outlet of the dry scrubber, two fans, one on and one on, are used to pump the dry HCL gas to the gas buffer tank, and the HCL gas enters the refining tower from the gas buffer tank. At this time, the HCl gas concentration is above 99.5%. The chlorosulfonic acid crude product returned from the synthesis tower is recycled to absorb HCL gas, so that the excess SO in the chlorosulfonic acid crude product 3 The gas reacts completely with HCL gas, and the high-concentration chlorosulfonic acid product flows into the cold row from the bottom of the refining tower, and flows into the chlorosulfonic acid buffer tank after exchanging heat in the cold row, and is pu...

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 invention relates to a chlorosulfonic acid production process and equipment thereof, which belong to the technical field of chemical process. In the process, the tail gas of a benzyl chloride device and a chlorcosane device reacts with SO3 gas from a niacin evaporator. The equipment of the chlorosulfonic acid production process comprises a synthesizing tower, an acid-washing tower and a tail gas absorption tower, wherein the synthesizing tower is connected with a treating column; the treating column is connected with a gas buffer slot; the gas buffer slot is connected with an HCL drying washer by two HCL fans; and the HCL drying washer is connected with the benzyl chloride device and the chlorcosane device. The invention sufficiently utilizes the waste gas as the raw material, thereby saving resources, reducing pollution and reducing cost.

Description

Technical field: [0001] The invention relates to a production process of chlorosulfonic acid, in particular to a process and equipment for producing chlorosulfonic acid using tail gas from benzyl chloride units and chlorinated paraffin units of Lanwei Company as raw materials, and belongs to the technical field of chemical engineering. Background technique: [0002] At present, the domestic chlorosulfonic acid plant mostly adopts the following production processes: [0003] 1. Use low-concentration sulfur trioxide gas (containing SO 3 7-8%) and low concentration (high concentration) hydrogen chloride synthesis process, using the gas phase synthesis method to prepare chlorosulfonic acid. Thanks to SO 3 After the gas comes from the primary conversion system of the sulfuric acid plant, there is still 0.3-0.5% SO in the gas 2 exist. At the same time, a large amount of non-reactive gas is brought in with the gas, which increases the size of the device and pipeline. At the sa...

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): C01B17/46
Inventor 于召刚殷会强杨广春胥利陈仲科
Owner 聊城鲁西氯甲烷化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com