Analytical pure sulfuric acid production process

A sulfuric acid production and process technology, applied in the field of analytical pure sulfuric acid, can solve problems such as increased operation, equipment management, damage, accelerated equipment corrosion, etc., and achieves the effects of easy device maintenance and management, reduced production costs, and increased production capacity

Inactive Publication Date: 2005-11-23
WUHAN QINGJIANG CHEM IND
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Problems solved by technology

[0002] At present, the method of domestic production of analytically pure sulfuric acid is to adopt distillation, that is, to produce analytically pure sulfuric acid as a raw material by means of distillation and purification with industrial sulfuric acid. This method adopts a quartz glass device, and the production process is intermittent production. The main shortcomings are: 1. The boiling point is 330°C, resulting in high product cost due to high distillation energy consumption
2. The production capacity of a single device is small
The daily production capacity of each set of equipment is 0.05-0.1 tons of ana

Method used

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  • Analytical pure sulfuric acid production process

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Embodiment

[0013] Embodiment: Get 800kg of high-concentration sulfur trioxide gas as raw material gas and condense it into a liquid at a temperature of 30-40°C through a condenser, and distill the sulfur trioxide condensed into a liquid at a temperature of 60-80°C with a glass-lined reactor to become The gas is sent to the absorption tower for absorption, the absorption liquid is qualified analytical pure sulfuric acid, the concentration of analytical pure sulfuric acid is adjusted with soft water, and then the product is desorbed in the desorption tower by the negative pressure generated by the vacuum pump to make the dissolved The sulfur dioxide in the product is deabsorbed and removed (returned to the industrial sulfuric acid production system or treated separately), and the qualified product is sent to the finished product warehouse to obtain about 1000kg of analytically pure sulfuric acid.

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Abstract

Disclosed is an analytical pure sulfuric acid production process which comprises using high concentration sulfur trioxide gas as raw material gas, passing through condenser for condensation, distilling sulfur trioxide in the form of condensed fluid into gas, loading into absorption column for absorption, wherein the absorption solution employs analytical pure sulfuric acid, soft water is utilized for adjusting acid concentration, then the product is subject to desorption with air in a desorption tower, thus removing the sulfur dioxide dissolved in the product, the examined specification product is then loaded into finished products warehouse.

Description

technical field [0001] The invention belongs to a production method of analytically pure sulfuric acid, specifically a method for producing analytically pure sulfuric acid by using high-concentration sulfur trioxide gas as raw material gas through a synthesis method. Background technique [0002] At present, the method of domestic production of analytically pure sulfuric acid is to adopt distillation, that is, to produce analytically pure sulfuric acid as a raw material by means of distillation and purification with industrial sulfuric acid. This method adopts a quartz glass device, and the production process is intermittent production. The main shortcomings are: 1. The boiling point of distillate is 330°C, so the cost of the product remains high due to the high energy consumption of distillation. The power consumption per ton of finished products using ordinary glass equipment is as high as 1000-2000kWh. Although in recent years people have carried out a lot of improvement...

Claims

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Application Information

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IPC IPC(8): C01B17/69
Inventor 张恒明黄义和李正荣赵业军陈杨周建锋蔡建平
Owner WUHAN QINGJIANG CHEM IND
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