High-purity sulfuric acid production method without distillation procedure and device of high-purity sulfuric acid production method

A technology for sulfuric acid production without distillation, applied in chemical instruments and methods, inorganic chemistry, sulfur compounds, etc., can solve the problems of easy loss and high energy consumption of production equipment, reduce equipment use costs, reduce production energy consumption, and simple operation Effect

Active Publication Date: 2012-06-20
韶关高科祥高新材料有限公司
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to overcome the defects of high energy consumption and easy loss of production equipment in the existing distillation method, and provide a production process without distillation process, that is, to eliminate the impure trioxide produced after a conversion in the ordinary industrial sulfuric acid production process. Sulfur gas (containing more sulfur dioxide, particulates, metal ions and other impurities, commonly known as a gas) is subjected to catalytic oxidation, washing, adsorption, filtration and absorption processes to produce high-purity sulfuric acid

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
  • High-purity sulfuric acid production method without distillation procedure and device of high-purity sulfuric acid production method
  • High-purity sulfuric acid production method without distillation procedure and device of high-purity sulfuric acid production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The quartz glass processing column has a diameter of 8 cm and a total length of 110 cm. Among them, the conversion washing liquid column is 40cm high, and the acidic mixed catalytic oxidation solution containing high-valent chromium and high-valent manganese catalyst is injected; the oxidation adsorption filter column is 70cm high, and the porous acid-resistant material filled with manganese and vanadium oxidants. The quartz glass absorption column has a diameter of 8cm and a length of 100cm. The column is filled with porous ceramsite and quartz sand of various sizes and shapes. Introduce the aspirated air of ordinary industrial sulfuric acid into the treatment column, and after about 5 minutes, the temperature of the converted washing liquid column reaches about 65°C, open the valve of the circulating acid absorption, and absorb the purified sulfur trioxide gas with 98% high-purity parent acid, absorb The temperature of the column is rapidly raised to 47°C, and then hi...

Embodiment 2

[0027]The quartz glass processing column has a diameter of 13cm and a total length of 120cm. Among them, the conversion washing liquid column is 45 cm high, and the acidic mixed catalytic oxidation liquid containing high-valent titanium and high-valent manganese catalyst is injected; the oxidation adsorption filter column is 75 cm high, and is filled with porous acid-resistant materials of manganese and titanium oxidants. The quartz glass absorption column has a diameter of 10cm and a length of 140cm. The column is filled with porous ceramsite, quartz sand and 0.8-1cm long small quartz broken tubes of different sizes and shapes. Introduce an aspirated air from common industrial sulfuric acid into the treatment column, and after about 6 minutes, the temperature of the converted washing liquid column reaches about 63°C, open the valve of the circulating acid absorption, and absorb the purified sulfur trioxide gas with 98% high-purity parent acid, absorb The temperature of the co...

Embodiment 3

[0031] The quartz glass processing column has a diameter of 15cm and a total length of 80cm. Among them, the conversion washing liquid column is 30cm high, and the acidic mixed catalytic oxidation solution containing high-valent titanium, high-valent chromium and high-valent manganese is injected; the oxidation adsorption filter column is 50cm high, and the porous acid-resistant material filled with manganese, titanium and vanadium oxidants . The quartz glass absorption column has a diameter of 12cm and a length of 80cm. The column is filled with porous ceramsite and quartz sand of various sizes and shapes. Introduce the aspirated air of ordinary industrial sulfuric acid into the treatment column, and after about 6 minutes, the temperature of the converted washing liquid column reaches about 61°C, open the valve of the circulating acid absorption, and absorb the purified sulfur trioxide gas with 98% high-purity parent acid, absorb The temperature of the column is rapidly rais...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a high-purity sulfuric acid production method without a distillation procedure and a device of the high-purity sulfuric acid production method. Sulfur trioxide/sulfur dioxide gas mixture generated after primary conversion in common industrial sulfuric acid production process is delivered to a treatment column with comprehensive functions of catalytically oxidizing sulfur dioxide, washing, absorbing and filtering metal ions and solid particles and the like. In the treatment column, sulfur dioxide is converted into sulfur trioxide by the aid of catalytic liquid, solid particles and metal ions in the gas are retained by the catalytic conversion liquid, converted and purified gas enters a solid particle material filling layer, and residual sulfur dioxide, solid particles and metal ions are removed by further chemical and physical actions such as catalytic oxidation, adsorption, filtering and separation and the like. Acquired high-purity sulfur trioxide further enters an absorption column, and is absorbed by high-purity sulfuric acid in the absorption column and high-purity water which is supplemented continuously, and high-purity sulfuric acid products with quality indexes meeting GB-T625-1989 standards of guaranteed reagent or analytical reagent is generated. The high-purity sulfuric acid production method and the device thereof are applicable to implementation on the basis of the common industrial sulfuric acid production process.

Description

technical field [0001] The invention belongs to a high-purity sulfuric acid production method and its device, in particular to a kind of sulfur trioxide / sulfur dioxide mixed gas (commonly known as a suction in the industry) produced after one conversion in the ordinary industrial sulfuric acid production process as raw material. A method and device for producing high-purity sulfuric acid through processes such as catalytic oxidation, washing, adsorption, filtration and absorption. Background technique [0002] High-purity sulfuric acid is a general term for chemically pure sulfuric acid, analytically pure sulfuric acid, high-grade pure sulfuric acid and high-purity ultra-clean electronic grade sulfuric acid. High-purity sulfuric acid is used for wet cleaning and etching of semiconductor silicon wafers, as an etchant for ultra-high integrated circuits (IC) and printed circuit boards, and for electroplating and cleaning of precision-made metal components. It is one of the key ...

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
Patent Type & Authority Applications(China)
IPC IPC(8): C01B17/74
Inventor 杨锐雄阮湘元牛俏生刘佑军张兴怀
Owner 韶关高科祥高新材料有限公司
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