Concentrated sulfuric acid purification device and purification process applying same

A concentrated sulfuric acid and equipment technology, applied in sulfur trioxide/sulfuric acid and other directions, can solve the problems of difficult process assurance, complex preparation, low daily output, etc., and achieve the effect of maintaining service life, increasing output, and small footprint

Pending Publication Date: 2020-08-28
贵溪市恒盛实业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Glass equipment has high corrosion resistance and thermal conductivity, and can be used as purification equipment, but the preparation of glass equipment for purifying concentrated sulfuric acid is complicated, the process is difficult to guarantee, and there are many grinding ports
There is unrelieved stress

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  • Concentrated sulfuric acid purification device and purification process applying same
  • Concentrated sulfuric acid purification device and purification process applying same
  • Concentrated sulfuric acid purification device and purification process applying same

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Embodiment Construction

[0023] Next, a specific embodiment of the present invention will be described in detail in conjunction with the accompanying drawings.

[0024] A kind of concentrated sulfuric acid purification equipment, is used for the purification of concentrated sulfuric acid, and it comprises the quartz glass component 10 that is used for heating and boiling the concentrated sulfuric acid by electric heating, adopts quartz glass to prepare, and described quartz glass SiO 2 The content is more than 99.97%, and it is welded by fully enclosed on-site welding technology, which makes up for the technical problem of grinding joints existing in ordinary glass.

[0025] It has been proved that SiO 2 Quartz glass equipment with a content of more than 99.97% has good corrosion resistance, excellent chemical stability, and high transparency. It is allowed to work at a high temperature of 1100 ° C, and the linear expansion coefficient is 5.56 × 10 at 1000 ° C. -7 , which is 1 / 10-1 / 20 of ordinary gla...

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PUM

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Abstract

The invention provides a concentrated sulfuric acid purification device which is used for purifying concentrated sulfuric acid and comprises: a quartz glass assembly used for heating and boiling the concentrated sulfuric acid through electric heating, a raw material acid supply device used for supplying raw material acid to the quartz glass assembly and a cooling tank used for cooling acid liquorpurified by the quartz glass assembly. The quartz glass assembly is prepared from quartz glass, wherein the SiO2 content of the quartz glass assembly reaches 99.97% or above; the quartz glass assemblyis formed by welding through a full-closed field welding technology, the allowable working temperature is not lower than 1100 DEG C, and the linear expansion coefficient of the quartz glass assemblyat the temperature does not exceed 5.56*10<-7>. The concentrated sulfuric acid purification equipment is high in daily output, small in occupied area and low in power consumption, continuous production can be achieved, and the process yield can reach 95%; in addition, visual production is achieved, air pressure resistance and hot pressing performance are guaranteed, impact of force with a certainfrequency generated by the Karman vortex street effect is eliminated, and the service life of equipment is maintained.

Description

technical field [0001] The invention relates to the field of concentrated sulfuric acid purification, in particular to a concentrated sulfuric acid purification equipment, which is made of quartz glass and welded by fully enclosed on-site welding technology, and its SiO 2 The content reaches more than 99.97%, and also relates to a concentrated sulfuric acid purification process based on the purification equipment. Background technique [0002] Concentrated sulfuric acid, the chemical formula is H 2 SO 4 , is a highly corrosive strong mineral acid. Concentrated sulfuric acid has strong oxidizing properties when the concentration is high. This is one of the biggest differences between it and ordinary sulfuric acid or ordinary concentrated sulfuric acid. It also has dehydration and strong oxidizing properties. , strong corrosiveness, low volatility, acidity, water absorption, etc. In the existing sulfuric acid purification device, the sulfuric acid is heated by a heating eva...

Claims

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Application Information

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IPC IPC(8): C01B17/90
CPCC01B17/90
Inventor 叶志正
Owner 贵溪市恒盛实业有限公司
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