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Method and apparatus utilising hydrogen peroxyde to reduce SOx, NOx and heavy metal emissions

一种过氧化氢、过氧化氢溶液的技术，应用在化学仪器和方法、分离方法、非金属元素等方向，能够解决有害废水流等问题

Inactive Publication Date: 2007-04-18
NASA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these washing methods often generate hazardous wastewater streams that must be treated

Method used

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  • Method and apparatus utilising hydrogen peroxyde to reduce SOx, NOx and heavy metal emissions
  • Method and apparatus utilising hydrogen peroxyde to reduce SOx, NOx and heavy metal emissions
  • Method and apparatus utilising hydrogen peroxyde to reduce SOx, NOx and heavy metal emissions

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Embodiment Construction

[0011] In the following detailed description of the preferred embodiment, reference is made to the accompanying drawings which form a part hereof, and which are shown by way of illustration of particularly preferred embodiments for practicing the invention. The descriptions of these implementations are detailed enough to enable those skilled in the art to implement the present invention, and it should be understood that other technical solutions can also be adopted, and logic operations can be carried out without departing from the spirit and scope of the present invention. , mechanical and chemical changes. It should be noted that the drawings are not to scale unless a size is provided therein. Accordingly, the following detailed description should not be considered for limiting purposes, the scope of the present invention being defined only by the appended claims and their equivalents.

[0012] The emission control system of the present invention is aimed at the environment...

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Abstract

Methods and apparatus utilizing hydrogen peroxide are useful to reduce SOx and mercury (or other heavy metal) emissions from combustion flue gas streams. The methods and apparatus may further be modified to reduce NOx emissions. Continuous concentration of hydrogen peroxide to levels approaching or exceeding propellant-grade hydrogen peroxide facilitates increased system efficiency. In this manner, combustion flue gas streams can be treated for the removal of SOx and heavy metals, while isolating useful by-products streams of sulfuric acid as well as solids for the recovery of the heavy metals. Where removal of NOx emissions is included, nitric acid may also be isolated for use in fertilizer or other industrial applications.

Description

[0001] technical field of invention [0002] The present invention relates generally to emission control and, in particular, the present invention relates to the control of emissions from combustion sources. Background of the invention [0003] Control of emissions from fossil fuel combustion sources addresses a major environmental concern. The Environmental Protection Agency (EPA) controls emissions from fossil fuel-fired power plants through the Clean Air Act. Initial control approaches focused on nitrogen oxides (NO x ) and sulfur oxides (SO x ) emissions, but new control methods include regulations to control heavy metals (mercury, etc.) and carbon dioxide. [0004] Gas streams produced in fuel processes are often scrubbed (eg, contacted with water or an aqueous solution) to remove many of their contaminants. However, these washing methods often generate hazardous waste streams that must be disposed of. [0005] F...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/60B01D53/75B01D53/64C01B17/50C01B17/05B01D53/56C01B21/40B01D53/14B01D53/50C01B17/74C01B21/38
CPCB01D53/60B01D53/507B01D53/56B01D2251/106C01B17/74C01B21/38Y02A50/20
Inventor C·F·帕里斯L·楚
Owner NASA
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