Swirl burner for burning high-temperature raw gas

A technology of swirl burners and raw gas, which is applied in the direction of gas fuel burners, burners, and combustion methods, and can solve problems such as the inability to configure raw gas swirl burners and the absence of raw gas

Pending Publication Date: 2020-09-04
HARBIN INST OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to solve the problem that low NOx burners in the prior art are not suitable for high-efficiency low NOx swirl combustion of raw coal gas and that there is no high-efficiency low NOx swirl burner for raw

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  • Swirl burner for burning high-temperature raw gas
  • Swirl burner for burning high-temperature raw gas
  • Swirl burner for burning high-temperature raw gas

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Embodiment Construction

[0062] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0063] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0064] A first structure of a swirl burner using high-temperature raw gas:

[0065] see figure 1 Describe this embodiment, a swirl burner for burning high-temperature raw gas described in this embodiment, including a central tube 1 coaxially arranged from inside to outside, an inner peripheral a...

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Abstract

The invention relates to a swirl burner for burning high-temperature raw gas, and belongs to the technical field of efficient clean coal burning. The problems that in the prior art, a low-NOx burner is not suitable for high-efficiency low-NOx swirl burning of the raw gas, and due to the fact that a high-efficiency and low-NOx raw gas swirl burner does not exist in the prior art, raw gas swirl burners cannot be configured for a segmented coupled pulverized coal burning technology are solved. The swirl burner mainly comprises a central pipe, an inner peripheral air channel, a raw gas channel, anouter peripheral air channel, a water-cooling coil cooling system and a diffusion small flame generator; and on the basis of the raw gas diffusion small flame, the weak swirl vortex outer boundary layer ignition and stable burning, the fuel rich burning, the air classification and the water-cooling and air-cooling comprehensive cooling technology, burning of the raw gas is achieved. The swirl burner has the characteristics of absolute ignition and stable combustion, inhibition of fuel type and thermal type NOx generation, high efficiency, slagging resistance, high-temperature corrosion resistance, excellent load response and reliable cooling, and the swirl burner is suitable for staged coupling pulverized coal burning of a wide range of coal types.

Description

technical field [0001] The invention belongs to the technical field of high-efficiency clean coal combustion. Background technique [0002] With the continuous growth of China's GDP, energy demand is also growing. Coal still accounts for more than 70% of China's primary energy composition. It is estimated that by 2030, China's coal will still account for more than 50% of the total primary energy consumption, and the consumption will reach about 4.5 billion tons. The average comprehensive utilization efficiency of power generation and heat supply in China is only about 40%, which is 10 percentage points lower than that of developed countries, and NOx emitted by coal combustion accounts for 75%. Among China's proven mineable coal reserves, low-quality coal accounts for about 50%, and the proportion of anthracite and lean coal alone is close to 30%, and a large amount of coke produced by lignite upgrading or low-temperature pyrolysis is in urgent need of new combustion and gas...

Claims

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Application Information

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IPC IPC(8): F23C7/00F23G7/06F23D14/26F23D14/78F23D14/84F23J3/00F25D1/00F25D17/02
CPCF23C7/002F23D14/26F23D14/78F23D14/84F23G7/06F23J3/00F25D1/00F25D17/02Y02E20/34
Inventor 刑春礼孙锐闫永宏朱文堃
Owner HARBIN INST OF TECH
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