Method and System for Injecting Low Pressure Oxygen from an Ion Transport Membrane into an Ambient or Super Ambient Pressure Oxygen-Consuming Process

a technology of ion transport membrane and oxygen-consuming process, which is applied in the direction of manufacturing tools, lighting and heating apparatus, combustion types, etc., can solve the problems of high energy consumption of separation process, large increase in cost of oxygen (for use in oxy-fuel combustion), and high cost of glass melting furna

a technology of ion transport membrane and oxygen-consuming process, which is applied in the direction of manufacturing tools, lighting and heating apparatus, combustion types, etc., can solve the problems of high energy consumption of separation process, large increase in cost of oxygen (for use in oxy-fuel combustion), and high cost of glass melting furna

US20140004470A1Inactive Publication Date: 2014-01-02AIR LIQUIDE AMERICA INC +1
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  • Method and System for Injecting Low Pressure Oxygen from an Ion Transport Membrane into an Ambient or Super Ambient Pressure Oxygen-Consuming Process
  • Method and System for Injecting Low Pressure Oxygen from an Ion Transport Membrane into an Ambient or Super Ambient Pressure Oxygen-Consuming Process
  • Method and System for Injecting Low Pressure Oxygen from an Ion Transport Membrane into an Ambient or Super Ambient Pressure Oxygen-Consuming Process

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[0052]In this invention, sub ambient pressure oxygen that is permeated from an ion transport membrane is injected into an oxygen-consuming process from an oxygen injection device. The oxygen injection device comprises an outer tube concentrically disposed around an inner tube. The outlet of the inner tube and an outlet of an annular space in between the inner and outer tubes feed into an interior of a reactor in which the oxygen-consuming process takes place. A high velocity gas is injected into the reactor from the inner tube. Expansion of the high velocity gas at the outlet of the inner tube causes oxygen to be sucked from the annular space and, hence, sucked from the ion transport membrane.

[0053]The reactor containing the oxygen-consuming process is not limited. Typical types of reactors include oxy-combustion furnaces, oxy-combustion boilers, aluminum furnaces, cement kilns, electric arc furnaces having oxygen lances or oxy-combustion burners, industrial melting furnaces, and bl...

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Abstract

A stream of sub ambient oxygen from an ion transport membrane is injected into an ambient pressure or super ambient pressure oxygen-consuming process through an annular space in between concentrically disposed inner and outer tubes where a high velocity gas is injected into the process from the inner tube.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]None.BACKGROUND[0002]1. Field of the Invention[0003]The present invention relates to injection of oxygen from ion transport membranes.[0004]2. Related ArtOxy-Combustion in Glass Manufacturing Process[0005]Air-fired glass melting furnaces has been converted to oxygen-fired technology (i.e., oxy-combustion with oxygen concentrations in the oxidant of up to 100%) primarily due to environmental regulations. Oxy-combustion is one of the most thermally efficient and cost-effective ways to enable glass manufacturers to meet NOx emissions restrictions. Compared with air-fired combustion, oxy-combustion has the potential to reduce NOx emissions by up to 85%.[0006]Besides the reduction of NOx emissions, the oxy-combustion has several other significant advantages over traditional air-fired combustion processes:[0007]the mass and volume of the flue gas are reduced by ˜75%;[0008]there is less heat loss in the flue gas due to the reduction of the flue ...

Claims

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Application Information

Patent Timeline
02 Jan 2014
Publication
US20140004470A1
IPC
F23L7/00; F23L15/00
CPC
F23L7/007; F23L15/00; C01B13/0251; C01B2203/025; C03B5/2353; Y02E20/34; Y02P40/50
Inventors
HUANG, WEI; WANG, JUSTIN JIAN