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Method of producing sulfuric acid using hydroxg oxidation of sulfur dioxide

A sulfur dioxide and hydroxyl oxidation technology, applied in chemical instruments and methods, chemical/physical/physicochemical processes of energy application, inorganic chemistry, etc., can solve unresolved problems

Inactive Publication Date: 2004-07-21
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

without NH 3 when SO 2 The removal rate is only 10%, adding NH 3 when SO 2 The removal reaches 90%, which is basically similar to the desulfurization efficiency of pulse corona discharge, and does not solve the problems existing in the desulfurization methods of pulse corona discharge and electron beam desulfurization

Method used

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  • Method of producing sulfuric acid using hydroxg oxidation of sulfur dioxide
  • Method of producing sulfuric acid using hydroxg oxidation of sulfur dioxide
  • Method of producing sulfuric acid using hydroxg oxidation of sulfur dioxide

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Embodiment Construction

[0071] The process flow of strong ionization discharge flue gas desulfurization resource is as follows: figure 1 Shown, SO 2 、H 2 O, flue gas is added into humidification tower 1 and is mixed with experimental gas, and the flow rate of gas is detected by flowmeter 2, enters plasma reaction chamber 4 after temperature and humidity control are carried out to experimental gas in temperature and humidity regulating device 3, and is reacted in plasma A plasma chemical reaction occurs in the vessel to generate hydroxyl radicals, which directly convert SO 2 Directly oxidized to hazy H 2 SO 4 Particles are recovered through the electric acid mist collector 5, and the treated flue gas is discharged through the induced draft fan 6. The high-frequency and high-voltage power supply controller 7, the inverter 8, and the transformer 9 form a high-voltage and high-frequency power supply for supplying power to the plasma reaction chamber. The DC high voltage power supply controller 10 an...

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Abstract

A process for preparing sulfuric acid by using hydroxy radical to oxidize SO2 includes using discharge electrode, ground electrode, dielectric layer and partition to form a discharge gap, applying an AC voltage to create a discharging electric field and generate spark and arc discharge, flowing fume through the ionizing region to generate hydroxy radicals, oxidizing the SO2 in fume to become sulfuric acid microdrips, and collecting them to obtain sulfuric acid.

Description

technical field [0001] The invention belongs to the technical field of gas ionization discharge and plasma chemical application, and relates to a method for generating sulfuric acid by oxidizing sulfur dioxide with hydroxyl. technical background [0002] In the 1980s, physicists began to pay attention to some urgent problems in acid rain control methods, and proposed to use extreme physical methods to solve dry recovery of SO 2 Difficulties in the method. In the mid-1980s, Masuda Shinichi, Aoki Shinji and others began to study the generation of OH by gas ionization discharge method * 、HO 2 and other active particles to replace the catalyst. In 1990, Teruji Hashimoto and Shinji Aoki of Japan Institute of Atomic Energy proposed a dry desulfurization method for ionized flue gas recovery by electron beam method. Applying a high voltage accelerates the electrons in the vacuum chamber, and the electrons gain 100eV-800eV energy. After passing through the 20μm-40μm thick titaniu...

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Application Information

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IPC IPC(8): B01J19/08C01B17/74H01T19/00
Inventor 张芝涛白敏菂白希尧白敏冬依成武周晓见杨波
Owner DALIAN MARITIME UNIVERSITY