Regeneration method of alkylated waste sulfuric acid

A technology for alkylating waste sulfuric acid and waste sulfuric acid, applied in sulfur trioxide/sulfuric acid, chemical instruments and methods, inorganic chemistry, etc. Low cost, low device maintenance cost, simple operation effect

Inactive Publication Date: 2017-05-31
广西防城港五星环保科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The discharged waste concentrated sulfuric acid is black-red in color, unstable in nature, emi

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0014] A kind of regeneration method of alkylation waste sulfuric acid, the temperature is 100 ℃, the pressure is 1MPa, 100kg waste sulfuric acid is placed in the reaction kettle, and the concentration is 30% hydrogen peroxide 20kg slowly, the organic matter or tiny carbon particle in the waste sulfuric acid and Hydrogen peroxide is converted into carbon dioxide, nitrogen and water, and after removal by stripping, regenerated sulfuric acid is obtained.

Embodiment 2

[0016] A regeneration method of alkylation waste sulfuric acid, the temperature is 150°C, the pressure is 4MPa, 100kg of waste sulfuric acid is placed in a reaction kettle, and 25kg of hydrogen peroxide with a concentration of 30% is slowly added, and the organic matter or tiny carbon particles in the waste sulfuric acid are mixed with Hydrogen peroxide is converted into carbon dioxide, nitrogen and water, and after removal by stripping, regenerated sulfuric acid is obtained.

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PUM

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Abstract

The invention relates to a regeneration method of waste sulfuric acid, in particular to a regeneration method of alkylated waste sulfuric acid. Waste sulfuric acid is in contact with hydrogen peroxide under redox conditions; organic matters or tiny carbon granules in the waste sulfuric acid react with hydrogen peroxide and are translated into carbon dioxide, nitrogen and water; and steam-stripping removing is performed, so as to obtain regenerated sulfuric acid. The regeneration method of alkylated waste sulfuric acid has the advantages that the required reaction temperature is comparatively low, the operation is simple, and the maintenance cost of a device is low.

Description

technical field [0001] The invention relates to a regeneration method of waste sulfuric acid, in particular to a regeneration method of alkylation waste sulfuric acid. Background technique [0002] In the process of petroleum refining industry, concentrated sulfuric acid is often used as a catalyst for the alkylation reaction of low-carbon hydrocarbon molecules. More specifically, C2-C5 olefins and isobutane undergo an alkylation reaction under the catalysis of 98% concentrated sulfuric acid, and the resulting alkylated oil is sulfur-free, aromatic-free, and has a high octane number, which is a high-quality high-octane oil Gasoline blending components. During the alkylation reaction, the moisture, sulfur and nitrogen compounds, and side reaction products in the raw materials continuously enter the acid phase, so that the concentration of sulfuric acid gradually decreases, and when the concentration is lower than 90%, it is discharged as waste acid. [0003] The discharged ...

Claims

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Application Information

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IPC IPC(8): C01B17/92C01B17/90
CPCC01B17/92C01B17/905C01P2006/80
Inventor 岑忠儒
Owner 广西防城港五星环保科技股份有限公司
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