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An activated catalytic device containing tourmaline for treating various low-concentration methane pollution sources

A catalytic device and tourmaline technology, applied in chemical instruments and methods, dispersed particle separation, separation methods, etc., can solve the problems of low catalytic efficiency, achieve the effects of increasing specific surface area, reducing agglomeration, and convenient and quick operation

Inactive Publication Date: 2016-03-02
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The invention improves the traditional catalytic oxidation device, its innovation lies in the integration of activation and catalytic functions, which overcomes the shortcomings of low catalytic efficiency of previous catalytic devices; at the same time, the activation catalytic device adopts program-controlled temperature rise, by adjusting the heating rate and gas flow , to treat low-concentration methane gas from different pollution sources to achieve the best catalytic effect, convenient and quick operation, wide application range, and overcome the defect that the previous catalytic device can only process a single pollution source gas

Method used

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  • An activated catalytic device containing tourmaline for treating various low-concentration methane pollution sources
  • An activated catalytic device containing tourmaline for treating various low-concentration methane pollution sources
  • An activated catalytic device containing tourmaline for treating various low-concentration methane pollution sources

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Utilize this device to process CNG automobile tail gas, at first in the catalytic reaction unit 8, load has 200 grams (2% tourmaline / 40%Co / 30%La / 15%Ce / 7%Zr / 3%Mn / 3% Al, abbreviated as LCT1) cordierite carrier 10 containing tourmaline rare earth composite catalyst, and fix it with high temperature resistant quartz wool, turn on the power, and set the gas flow rate to 12m through the flow control button 7 3 / min, feed CNG automobile exhaust, record the gas temperature and methane concentration displayed on the gas detector display 5, set the heating temperature of the heating resistor 9 to 600°C, and set the programmed heating parameters through the temperature control button 11: the heating rate is 50°C / min, at 200°C, 300°C, 400°C, 500°C, and 600°C respectively, use an exhaust gas analyzer to detect the methane concentration in the reacted gas and record the results until the temperature rise at 600°C ends, then turn off the power. In the comparative experiment, tourmali...

Embodiment 2

[0073] The difference between the second embodiment and the first embodiment is that the gas introduced becomes the exhaust air of the coal mine, and the gas flow rate is set to 60m 3 / min, composite catalyst (6% tourmaline / 36%Co / 24%La / 20%Ce / 10%Zr / 2%Mn / 2%Al, abbreviated as LCT2 ) in an amount of 800 grams; in the comparative experiment, tourmaline is replaced by non-catalytically active SiO 2 , that is, adding 800 g of loaded 6% SiO to the activated catalytic device 2 / 36%Co / 24%La / 20%Ce / 10%Zr / 2%Mn / 2%Al (abbreviated as LC2 ) gas flow 60m 3 / min, the size of the device is with reference to Table 1, and other conditions are the same as in Example 1.

[0074] Experimental results such as Figure 6 , it can be seen that the corresponding temperature of the catalytic device added with tourmaline active ingredient is 425 °C when the methane concentration is reduced by half, and the corresponding temperature of the catalytic device without tourmaline active ingredient is 455 °C ...

Embodiment 3

[0076] The difference between the third embodiment and the first embodiment is that the incoming gas becomes industrial organic waste gas, the initial methane concentration is 0.56%, and the gas flow rate is set to 40m 3 / min, the consumption of composite catalyst (8% tourmaline / 37%Co / 20%La / 16%Ce / 9%Zr / 5%Mn / 5%Al, abbreviated as LCT3) is 600 grams, the comparative experiment is selected (8 %SiO 2 / 37%Co / 20%La / 16%Ce / 9%Zr / 5%Mn / 5%Al, abbreviated as LC3) catalyst 600g, gas flow rate is 40m 3 / min, the size of the device is with reference to Table 1, and other conditions are the same as in Example 1.

[0077] Experimental results such as Figure 7 , it can be seen that the temperature corresponding to the catalytic device added with tourmaline active ingredient is 425°C when the methane concentration is reduced by half, and the corresponding temperature of the catalytic device without tourmaline active ingredient is 460°C when the methane concentration is reduced by half, indicatin...

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Abstract

The invention relates to an activating and catalyzing device containing tourmaline and used for processing multiple low-concentration methane pollution sources. The device comprises a gas detector, an activating catalyzing device and a tail gas analyzer which are sequentially arranged on a closed pipeline and connected with one another in series; the gas detector comprises a temperature sensor and a concentration sensor which are sequentially arranged on the closed pipeline, the temperature sensor and the concentration sensor are respectively connected with an information processor, and the information processor is connected with a first LED (light emitting diode) display; the activating and catalyzing device comprises a digital quality flow meter and a catalyzing reaction unit which are sequentially arranged on the closed pipeline, as well as a second LED display device; an active catalyst is loaded in the catalyzing reaction unit; and the active catalyst is a tourmaline-containing rare-earth composite catalytic material which is loaded on a cordierite carrier. Compared with the prior art, the device provided by the invention has the advantages that an activating device and a catalyzing device are integrated into one, so that the size of the device is reduced by 50 percent, the device is convenient to carry, and the production cost is reduced by 30 percent.

Description

technical field [0001] The invention relates to an activated catalytic device containing tourmaline for treating various low-concentration methane pollution sources. Activate catalytic treatment. Background technique [0002] Methane is the most stable HC compound. Its self-oxidation reaction is more difficult than that of general HC compounds. Its heating potential to the atmosphere is 25 times higher than that of carbon dioxide. It is a greenhouse gas. A lot of methane in life is discharged into the atmosphere due to its extremely low concentration and is difficult to use, causing serious pollution to the atmospheric environment. The main sources of low-concentration methane gas are CNG vehicle exhaust, coal mine exhaust, industrial organic waste gas, natural gas kiln waste gas, etc. . CNG vehicles are developing rapidly because of their economy, energy saving and environmental affinity. The methane in the exhaust gas has high stability and is difficult to activate and c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/72
Inventor 薛刚王赛飞梁金生苑砚坤孟军平
Owner HEBEI UNIV OF TECH
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