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Catalytic agent and combustion board suitable for catalytic combustion and preparation method thereof

A catalytic combustion and catalyst technology, applied in combustion methods, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of waste convective heat consumption, short residence time, low thermal efficiency, etc., and achieve good combustion conditions. Full utilization, high thermal efficiency

Inactive Publication Date: 2013-10-16
SICHUAN TIANJIAN CATALYTIC COMBUSTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Convective heat transfer is carried out through the temperature difference and residence time between the convective heat (hot air, flame) and the heated object. The heat is greatly reduced, and the thermal efficiency is low; at the same time, the flame combustion temperature is higher than 1500 ° C, which easily makes the N in the air 2 and O 2 The reaction forms highly toxic NOx, and incomplete combustion also produces CO, CH and other pollutants

Method used

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  • Catalytic agent and combustion board suitable for catalytic combustion and preparation method thereof
  • Catalytic agent and combustion board suitable for catalytic combustion and preparation method thereof
  • Catalytic agent and combustion board suitable for catalytic combustion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Catalyst La 0.7 Sr 0.3 co 0.96 PD 0.04 o 3 preparation of

[0050] Lanthanum nitrate [La(NO 3 ) 3 .6H 2 O]65.92g, strontium nitrate [Sr(NO 3 ) 2 ] 13.74g, cobalt nitrate [Co(NO 3 ) 2 .6H 2 O] 61.77g was dissolved in 62.5ml deionized water and stirred until dissolved. Next, add citric acid [C 6 h 8 o 7 .H 2 O] 135.67g, stirred until dissolved. Then, palladium nitrate [Pd(NO 3 ) 2 ] 5.06g was added to the metal salt solution and stirred for half an hour. The obtained solution is aged in a water bath at 70-80°C for about 2-7 hours. After the water bath, the sol was calcined at 500°C for 1 h and at 900°C for 3 h to obtain a black powder sample. A binder is added to the black powder to prepare a slurry, which can be prepared as a catalyst coated on a combustion plate.

Embodiment 2

[0052] Catalyst La 0.8 Sr 0.2 co 0.96 PD 0.04 o 3 preparation of

[0053] Lanthanum nitrate [La(NO 3 ) 3 .6H 2 O]73.71g, strontium nitrate [Sr(NO 3 ) 2 ] 8.96g, cobalt nitrate [Co(NO 3 ) 2 .6H 2 O] 60.43g was dissolved in 62.5ml deionized water, stirred until dissolved. Next, add citric acid [C 6 h 8 o 7 .H 2 O] 132.73g, stirred until dissolved. Then, palladium nitrate [Pd(NO 3 ) 2 ] 4.95g was added to the metal salt solution and stirred for half an hour. Other operations are the same as in Example 1, and the catalyst coated on the combustion plate can be prepared.

Embodiment 3

[0055] Catalyst La 0.9 Sr 0.1 Ni 0.2 co 0.75 PD 0.05 o 3 preparation of

[0056] Lanthanum nitrate [La(NO 3 ) 3 .6H 2 O] 81.04g, strontium nitrate [Sr(NO 3 ) 2 ] 4.38g, nickel nitrate [Ni(NO 3 ) 2 .6H 2 O] 12.15g, cobalt nitrate [Co(NO 3 ) 2 .6H 2 O] 46.14g was dissolved in 62.5ml deionized water, stirred until dissolved. Next, add citric acid [C 6 h 8 o 7 .H 2 O] 129.72g, stirred until dissolved. Then, palladium nitrate [Pd(NO 3 ) 2 ] 6.02g was added to the metal salt solution and stirred for half an hour. Other operations are the same as in Example 1, and the catalyst coated on the combustion plate can be prepared.

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Abstract

The invention discloses a catalytic agent and a combustion board suitable for catalytic combustion and a preparation method thereof. Thulium, alkaline-ea metallic element and transition metal element are adopted to prepare the catalytic agent, a metal beehive is adopted to be taken as a carrier, a webby structure is arranged on the lower surface of the carrier, and a combustion catalytic agent layer is formed on the upper surface of the metal beehive carrier through steps such as coating. The combustion board changes the combustion heating manner; proved by the experiment, the combustion board is better in combustion working condition when in use, higher in heat efficiency and lowest in pollutants particularly such as NOx, CO and HC in combustion tail gas, and realizes that the combustion saves energy better, the pollution of the combustion is low, and the combustion is more effective.

Description

technical field [0001] The invention relates to the technical field of catalytic combustion, in particular to a catalyst suitable for catalytic combustion and a preparation method thereof, and also to a combustion plate coated with a catalyst suitable for catalytic combustion and a preparation method thereof. Background technique [0002] At present, the domestic consumption of liquefied petroleum gas and natural gas is increasing year by year. These gases mainly use traditional diffusion combustion or partial premixed combustion to release energy. Its thermal energy conduction is mainly convective heat transfer, and radiation heat transfer only accounts for a very small part. Convective heat transfer is carried out through the temperature difference and residence time between the convective heat (hot air, flame) and the heated object. The heat is greatly reduced, and the thermal efficiency is low; at the same time, the flame combustion temperature is higher than 1500 ° C, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89F23D14/18
Inventor 赵胜庆郭元兴李玮
Owner SICHUAN TIANJIAN CATALYTIC COMBUSTION