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catalytic burner

A catalytic burner and catalyst technology, which is applied in the direction of burners, burners, and combustion using catalytic materials, and can solve problems such as failure to meet emission standards

Inactive Publication Date: 2017-07-28
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these designs are more compact and reduce NO x emissions, but this reduction is becoming insufficient to meet increasingly stringent emission standards

Method used

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Examples

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example 1

[0128] Boiler tests were performed in a domestic size boiler (NTI Trinity Ti150, commercially available from NY Thermal-St. John, New Brunswick, California). Burners are commercially available and have sheets of FeCrAl metal fiber mesh. The mesh was removed and replaced with various media for testing. With 30% excess air (EA) and a firing rate of 15.8-158MJ / h (15-150kBtu / h) (equivalent to 544-5440MJ / h / m 2 (48-480kBtu / h / ft 2 ) of the input power density) to carry out experiments. The boiler inlet water temperature was kept constant at 60°C and the temperature rise across the boiler (outlet temperature minus inlet temperature) was 11°C. The gaseous emissions are sampled from the boiler's flue gas and passed through a cooler to remove any water vapor before being sent to a series of gas analyzers. The concentrations of carbon dioxide, carbon monoxide, and methane in the sampled gases were determined by the infrared absorption method using a Horiba VIA-510 gas analyzer (Irvine...

example 2

[0133]Burner testing in a custom open pit burner. Methane and dry air were metered using a mass flow controller (available as AALBORG GFCS-010066 from Aalborg, Orangeburg, New York) and sent through a loop containing a series of perforated circles. Dish mixing chamber. The premixed gases were then fired in a semi-cylindrical burner head that mimics the geometry of the boiler burner in Example 1 and is mounted on a flat surface. The temperature of the packed bed was monitored using a K-type thermocouple (Omega Engineering, Stamford, Connecticut), while emissions were measured using the method described in Example 1. Due to the entrainment of ambient gases in the gas sampling, the measured CO2 and unburned methane x Results are scaled to combustion products appropriate for known inputs. Tables 4 and 5 summarize the NO of carrier B, carrier A, catalyst media particle D, and catalyst media particle F x Discharge and packed bed temperature data. First compare the catalyst vs. ...

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Abstract

The invention discloses a catalytic burner, which comprises a porous diffuser member and a porous distributor member. At least one seal extends between the porous diffuser member and the porous distributor member, thereby defining an oxidation chamber. Catalyst media particles for catalyzing the oxidation reaction of the fuel stream to generate heat and exit the stream are disposed within the oxidation chamber. The catalyst media particles comprise support particles. The support particles comprise a refractory material, and at least some of the support particles have an outer coating thereon comprising an oxidation catalyst. The catalyst media particles have a void fraction of at least 0.6.

Description

[0001] Statement of Federally Funded Research [0002] This invention was made with Government support under Contract No. DE-EE0003491 awarded by the Department of Energy. The government has certain rights in this invention. technical field [0003] The present disclosure relates to catalytic combustors and catalyst media used therein. Background technique [0004] In commercial boilers, a gaseous hydrocarbon fuel source is converted to thermal energy inside a heat exchanger housed within the boiler. Usually, the space inside the heat exchanger is kept small to minimize the size of the boiler. To minimize operating and environmental costs, it is desirable that the fuel is efficiently converted to heat and that harmful by-products (e.g., NO x , CO) amount. [0005] Previous attempts to solve this problem have involved controlling the fluid dynamics of the gas-air mixture through porous distributor and diffuser plates (the term is more commonly used, even though the "plat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23D14/18
CPCF23D2212/105F23D2203/1012F23D14/181F23C13/00
Inventor 阿伦·R·比贝尔托马斯·E·伍德亚当·C·申德尔巴德理·维尔拉哈万伊万·昆·伦·油吉·哈吉米
Owner 3M INNOVATIVE PROPERTIES CO