Crude oil swirling low-nitrogen burner of steam-injection boiler

Abstract

The invention discloses a swirling crude oil burner, utilizing burning crude oil, of a steam-injection boiler. Such a crude oil swirling low-nitrogen burner comprises, in an air flow direction, an air inlet, a control damper, a central air chamber, a secondary air chamber, a peripheral air chamber, a secondary air nozzle and a peripheral air nozzle in order. Central air orderly flows through the central air chamber, a central air duct and a flame stabilizer. Secondary air orderly flows through the secondary air chamber, a secondary air swirling plate, a secondary air duct and the secondary air nozzle. Peripheral air orderly flows through the peripheral air chamber, a peripheral air duct and the peripheral air nozzle. An oil gun, a flame detector and the flame stabilizer all are arranged in the central air duct. The burner provided by the present invention organizes air for combustion via reasonable staging to realize staged combustion of the crude oil, and therefore, the generation of nitrogen oxides may be effectively reduced and nitrogen emissions may be reduced; in addition, the burner has the advantages of simple system, easy maintenance, low maintenance cost and long service life.

Description

technical field [0001] The invention relates to a crude oil swirling low-nitrogen burner for a steam injection boiler that promotes the rotary combustion of crude oil, in particular to a burner capable of realizing low-nitrogen combustion of crude oil in a steam injection boiler. Background technique [0002] In July 2013, Shandong Province issued the "Comprehensive Emission Standards of Regional Air Pollutants in Shandong Province", which stipulated that by January 1, 2017, the emission standard of nitrogen oxides from oil-fired boilers should be 250mg / Nm 3 Within, by January 1, 2020, the nitrogen oxide emission standard for oil-fired boilers will be 200mg / Nm 3 within. However, because the existing gas injection furnace burners all use high excess air coefficient combustion, and its structure is simple, the organizational wind is single, resulting in excessive nitrogen oxide emissions; improving the combustion efficiency of gas injection boilers and reducing nitrogen oxide...

AI Technical Summary

Problems solved by technology

However, due to its internal mechanism and other reasons, the above-mentioned devices have certain limitations when applied to steam injection boilers.

Such as plasma burner: high primary investment, poor fuel applicability, high power consumption, short service life, complicated system and high maintenance cost

For example, burners in North America: imported burners, high initial investment, cannot reduce nitrogen oxide emissions, and high maintenance costs

Such as double strong burner: the system is complicated, the fuel consumption is large, and the investment is high

[0003] In summary, this type of technology is suitable for large-capacity and high-parameter power industry boilers or coal-fired boilers, and there are great limitations in the use of steam injection boilers

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