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Method for deeply removing CO from process furnace flue gas, catalyst composition, and preparation method and application of catalyst composition

A technology of deep purification and composition, applied in the field of flue gas purification, can solve the problems of loss of low NOx combustion, flammability and explosion, increased risk of safe operation of heating furnaces, etc., and achieve the effect of reducing agglomeration and reducing NOx content

Pending Publication Date: 2020-02-04
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there is no standard that has a clear limit on CO emissions, CO is an air pollutant that has a wider impact. It is colorless, odorless, flammable and explosive. It can enter the human blood through the respiratory system and combine with hemoglobin to prevent The combination of hemoglobin and oxygen leads to hypoxia in the body tissue, and severe cases may suffocate to death
At the same time, the high CO content and low combustion temperature make it possible for the combustion nozzle of the heating furnace to go out, and the risk of safe operation of the heating furnace increases
The reduction of CO content in the process furnace can be achieved by increasing the O 2 However, increasing the oxygen content or the combustion temperature of the furnace may cause the NOx content in the flue gas to increase, losing the meaning of low NOx combustion

Method used

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  • Method for deeply removing CO from process furnace flue gas, catalyst composition, and preparation method and application of catalyst composition
  • Method for deeply removing CO from process furnace flue gas, catalyst composition, and preparation method and application of catalyst composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Respectively weigh the general formula as LaMn 0.4 co 0.6 o 3 10.0g of perovskite (100 parts on a dry basis), 16.8g of cerium-zirconium mixed oxidation (1:1 molar ratio of cerium and zirconium, 95 parts on a dry basis), anatase TiO 2 171.7g (95 parts on a dry basis), 6.0g of carboxymethylcellulose (100 parts on a dry basis) are put into a container with a volume of 1000ml 1, mechanically stirred evenly, and ground for 3 hours; 9.8g of chemical formula is weighed as (NH 4 ) 6 W 7 o 24 ·6H 2 O(WO 3 82 parts on a dry basis), put into a 500ml beaker 1 with a volume, add 105g of distilled water, and stir to make it completely dissolve; take by weighing 5.8g of the general chemical formula Cu(NO 3 ) 2 2.5H 2 O (CuO dry basis 34 parts), put into beaker 2 with a volume of 500ml, add 35g of distilled water, stir to make it dissolve completely; After stirring for 30 minutes, put it into an extruder and squeeze it repeatedly into fine lumps, keep it moist for 18 hours; s...

Embodiment 2

[0042] Respectively weigh the general formula as LaMn 0.4 co 0.6 o 3 16.0g of perovskite (100 parts on a dry basis), 16.8g of cerium-zirconium mixed oxide (0.5:0.8 molar ratio of cerium to zirconium, 95 parts on a dry basis), anatase TiO 2 157.6g (95 parts on a dry basis), 3.0g (100 parts on a dry basis) of corn starch and carboxymethyl cellulose (100 parts on a dry basis) are put into a container with a volume of 1000ml 1, mechanically stirred evenly, and ground for 3 hours; Take by weighing 12.2g chemical general formula and be (NH 4 ) 6 W 7 o 24 ·6H 2 O(WO 3 82 parts on a dry basis), put into a 500ml beaker 1 with a volume, add 105g distilled water, and stir to make it completely dissolved; take by weighing 11.8g chemical formula of Cu(NO 3 ) 2 2.5H 2 O (CuO dry basis 34 parts), put into beaker 2 with a volume of 500ml, add 45g of distilled water, stir to make it dissolve completely; After stirring for 30 minutes, put it into an extruder and repeatedly extrude in...

Embodiment 3

[0044] Respectively weigh the general formula as LaMn 0.4 co 0.6 o 3 30.0g of perovskite (100 parts on a dry basis), 21.1g of cerium-zirconium mixed oxide (1.5:0.6 molar ratio of cerium to zirconium, 95 parts on a dry basis), anatase TiO 2 137.6g (95 parts on a dry basis), 6.0g of carboxymethylcellulose (100 parts on a dry basis) are put into a container with a volume of 1000ml 1, mechanically stirred evenly, and ground for 3 hours; 4 ) 6 W 7 o 24 ·6H 2 O(WO 3 82 parts on a dry basis), put it into a 500ml beaker 1, add 105g of distilled water, and stir to make it completely dissolve; weigh 10.8g of the general chemical formula of CuCl 2 2H 2 O (CuO dry basis 46 parts), put into beaker 2 with a volume of 500ml, add 45g of distilled water, stir to make it completely dissolved; After stirring for 30 minutes, put it into an extruder and repeatedly extrude into fine lumps, keep it moist for 24 hours; extrude into strips, place in a cool place for 40 hours to dry in the sha...

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PUM

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Abstract

The invention discloses a method for deeply removing CO from process furnace flue gas, a catalyst composition, and a preparation method and an application of the catalyst composition. The catalyst composition comprises 4-25wt% of a perovskite component with the general formula of LaMn1-xCoxO3 (x = 0.1-0.8), 2-10 wt% of WO3, 1-7 wt% of CuO, 2-15 wt% of a cerium-zirconium mixed oxide, 55-85 wt% of TiO2 and 50-1000 [mu] g / g of a noble metal. The catalyst composition is placed near the burnout area of a heating furnace or at the rear part of a flue, can deeply remove CO from process furnace flue gas and convert the CO into carbon dioxide, and has a high CO removal efficiency.

Description

technical field [0001] The invention relates to the technical field of flue gas purification, in particular, to a method for deep purification of CO in process furnace flue gas, a catalyst composition, a preparation method and an application. Background technique [0002] In the process of industrial production, high-temperature smelting facilities are involved, such as craft kiln anode furnace, which will produce high-temperature, dust-containing harmful flue gas, etc. Technological furnaces, such as those in oil refineries, are the main single-point emission source of NOx. The refinery contributes significantly to the total NOx emissions, making NOx control a great challenge. With the implementation of the new "Petroleum Refining Industry Pollutant Discharge Standard", most enterprises are facing greater pressure on NOx emissions. In recent years, low NOx burner technology has been widely used in order to reduce NOx emissions from the flue gas of the refinery process heat...

Claims

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Application Information

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IPC IPC(8): B01J23/89B01D53/86B01D53/62
CPCB01J23/8993B01D53/864B01D2255/2063B01D2255/2073B01D2255/20746B01D2255/20707B01D2255/20776B01D2255/20761B01D2255/2065B01D2255/20715B01D2258/0283B01D2257/502Y02A50/20
Inventor 齐文义郝代军李小苗陈千惠左世伟黄延召孟学峰邓向军邹颖
Owner CHINA PETROLEUM & CHEM CORP
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