Method for strengthening oxidation of ammonium sulfite

A technology for strengthening ammonium sulfite and ammonium sulfite, which is applied in chemical instruments and methods, separation methods, perfluorocarbon/hydrofluorocarbon capture, etc. Slowness, constraints and other problems, to achieve the effect of good oxidation effect, low equipment investment cost and reliable operation

Pending Publication Date: 2021-08-03
BEIJING UNIV OF CHEM TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the oxidation rate of ammonium sulfite is slow and the high concentration of ammonium sulfite is

Method used

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  • Method for strengthening oxidation of ammonium sulfite
  • Method for strengthening oxidation of ammonium sulfite

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] Using super-gravity machine (Beijing Chemical University itself), the use of wire mesh filler, adjusting the speed of the super - heavy force is 1200 rpm, according to the gas-liquid flow volume ratio 2: 1, the air and ammonium sulfite solutions are imported from the gas from the gas. In the super gravity, the temperature of the ammonium sulfite is 60 ° C, the air temperature and pressure are 25 ° C and 0.1 MPa, respectively, the concentration of ammonium sulfite is 0.2 mol / L, the pH of the ammonium sulfite solution is 8.14. During intermittent operation, 500 ml of ammonium sulfate solution was circulated for 10 min after 10 min in an overweight machine, and ammonium oxidation rate was 63.38%.

Example Embodiment

[0034] Example 2

[0035] Using ultra-gravity machine (Beijing Chemical University itself), the use of wire mesh filler, adjusting the speed of the super - heavy force is 1400 rpm, according to the gas-liquid flow volume ratio 2: 1, the pure oxygen and ammonium sulfate solution from the gas Inlet and liquid inlet delivery, ammonium sulfate solution is 50 ° C, the pure oxygen temperature and the pressure are 25 ° C and 0.1 MPa, respectively, the concentration of ammonium sulfate is 0.2 mol / L, ammonium sulfate solution pH The value is 8.14. During intermittent operation, 500 ml of ammonium sulfate solution was circulated for 1 min in an overweight machine, and ammonium oxidation rate was 74.11%.

Example Embodiment

[0036] Example 3

[0037] Using super-gravity machine (Beijing Chemical University itself), the use of wire mesh filler, adjusting the speed of the super - gravity of 1200 rpm, according to the gas-liquid flow volume ratio 2: 1, the air and ammonium sulfite solution and the zipper The alkane mixed liquid is supplied from the gas inlet and liquid inlet, respectively, and the node dodecyries is 8%, the temperature of the ammonium sulfite is 60 ° C, the air temperature and pressure are 25 ° C and 0.1MPa, respectively. The concentration of ammonium sulfate solution was 0.2 mol / L, the pH of the ammonium sulfite was 8.14. During intermittent operation, 500 ml of ammonium sulfate solution was circulated for 10 min after the ultra-gravity machine, ammonium oxidation rate was 74.3%.

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Abstract

The invention provides a method for strengthening oxidation of ammonium sulfite, which comprises the following steps that gas containing oxidizing components enters a supergravity machine from a gas inlet, and an ammonium sulfite solution enters the supergravity machine from a liquid inlet; in the supergravity machine, the ammonium sulfite solution is in contact with a gas phase containing oxidizing components, oxidizing substances in the gas phase enter the ammonium sulfite solution and react with ammonium sulfite, after the reaction, the liquid phase leaves the supergravity machine from the liquid outlet, and the gas phase leaves the supergravity machine from the gas outlet. According to the method, the characteristic that the supergravity machine strengthens gas-liquid mass transfer is utilized, the absorption effect of the ammonium sulfite solution on oxidizing components in a gas phase is remarkably improved, the oxidation efficiency of ammonium sulfite is improved, and the method has the advantages of being simple in equipment structure, small in size, low in energy consumption and the like and is a new technology for strengthening ammonium sulfite oxidation.

Description

technical field [0001] The invention relates to a method for strengthening the oxidation of ammonium sulfite, in particular to a method for strengthening the oxidation of ammonium sulfite by using a supergravity machine. Background technique [0002] At present, coal plays a major role in my country's energy structure. However, coal contains a certain amount of sulfur. In order to prevent the release of SO in the process of utilizing coal resources, 2 To pollute the environment, it is necessary to use desulfurization technology to capture sulfur. At present, the world's main countermeasures for sulfur emissions in coal combustion can be roughly divided into three types: front-end control technology (desulfurization before combustion), mid-end desulfurization technology (desulfurization during combustion) and terminal treatment technology (desulfurization after combustion), Among them, the most widely used is the end-to-end SO in the flue gas 2 Remove. According to the dif...

Claims

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Application Information

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IPC IPC(8): B01D53/78B01D53/50B01D53/86B01D53/34B01F9/00
CPCB01D53/78B01D53/502B01D53/8609B01D53/346B01D2251/206B01D2251/60B01D2258/0283B01F29/15Y02C20/30
Inventor 邵磊方夕宏韩榕
Owner BEIJING UNIV OF CHEM TECH
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