New process for preparing chlorosulfonic acid and equipment thereof

A chlorosulfonic acid and a new process technology, applied in the field of chlorosulfonic acid preparation technology, can solve problems such as potential safety hazards, large equipment footprint, cost reduction and stable production, and achieve simple post-treatment process and reduced device volume. , to promote the full effect of

Inactive Publication Date: 2008-03-05
上海海陆昆仑高科技工程有限公司 +1
View PDF2 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] But existing chlorosulfonic acid synthetic technique still has following shortcoming: 1, sulfur trioxide and hydrogen chloride mixed gas carry out gas-phase reaction at higher temperature, and the product that makes is gas chlorosulfonic acid, and this gas product is through cold discharge pipe Waiting for the external heat exchanger to condense to obtain liquid chlorosulfonic acid, and there are non-condensable gases such as chlorosulfonic acid and hydrogen that have not been fully absorbed in the tail gas, which poses a safety hazard; 2. Due to the existence of non-condensable gases, the tail gas treatment process is complicated. It will inevitably lead to an increase in energy consumption and raw materials, and the basic zero emission of tail gas cannot be achieved; 3. The residence t

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
  • New process for preparing chlorosulfonic acid and equipment thereof
  • New process for preparing chlorosulfonic acid and equipment thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] A new process for preparing chlorosulfonic acid, using high-purity hydrogen chloride gas and high-purity sulfur trioxide gas as raw materials, comprises the following steps:

[0041] (1) High-purity (above 99%) hydrogen chloride is deabsorbed with hydrochloric acid, removed water and defogging with concentrated sulfuric acid in a scrubber, enters a refining tower, and enters a synthesis tower at a temperature controlled at 80-90°C; high-purity (99% % or more) sulfur trioxide gas is demisted to remove water, the temperature is controlled at 90-100°C and enters the synthesis tower, hydrogen chloride gas and sulfur trioxide gas are synthesized at a volume ratio of 1:1.1, and the reaction temperature is 95-110°C;

[0042] (2) Synthesize in the liquid phase through the circulation of spraying and absorbing the gas phase reactant in the synthesis tower with the liquid phase product obtained by synthesis; and absorb the small droplets generated by the gas phase reactant reactio...

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 is process and apparatus for preparing chlorosulfonic acid. The process includes the following steps: pre-treating high purity hydrogen chloride and excessive sulfur trioxide gas, and synthesizing in a synthesizing tower; absorbing the gaseous resultant with the sprayed liquid resultant and reacting to produce small drop as the coarse liquid chlorosulfonic acid product; further reacting the coarse liquid chlorosulfonic acid product with hydrogen chloride gas in a refining tower to operate product, and absorbing un-reacted gas to reach exhaust standard. The present invention has the advantages of high product converting rate, small size of cooler, compact structure of synthesizing tower, high product purity, etc.

Description

technical field [0001] The present invention relates to the field of chemical product preparation, and is a new process and equipment for the preparation of chlorosulfonic acid, especially a chlorosulfonic acid preparation process for producing high-purity chlorosulfonic acid by using a synthesis tower to circulate spray and absorb, which has extremely The high conversion rate basically achieves zero emission of tail gas. Background technique [0002] The raw materials for the synthesis of chlorosulfonic acid are hydrogen chloride gas and sulfur trioxide gas. For domestic chlorosulfonic acid manufacturers, the synthesis process of chlorosulfonic acid has not changed much. Patent No. ZL97112819.7 discloses a scheme for the preparation of chlorosulfonic acid by the high gas concentration method which is widely used, in which the preparation of pure sulfur trioxide gas is provided, and the raw material gas of low concentration sulfur trioxide is cooled and sent to nicotinic aci...

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 刘纪状夏小勇洪伟周杨刘勇沈新华沈高庆邓建军
Owner 上海海陆昆仑高科技工程有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap