Crude oil and fuel gas rotational flow low-nitrogen burner of steam-injection boiler for burning crude oil and fuel gas

Abstract

The invention discloses a crude oil and fuel gas rotational flow low-nitrogen burner of a steam-injection boiler for burning crude oil and fuel gas. According to the air flowing direction, the crude oil and fuel gas rotational flow low-nitrogen burner sequentially comprises an air inlet, a control damper, a center air chamber, secondary air chambers, surrounding air chambers, a secondary air spraying opening and a surrounding air spraying opening. Center air sequentially flows through the center air chamber, a center air tube and the burner. Secondary air sequentially flows through one secondary air chamber, a secondary air spinning disk, the other secondary air chamber and the secondary air spraying opening. Surrounding air sequentially flows through one surrounding air chamber, the other surrounding air chamber and the surrounding air spraying opening. According to the burner, burning air is reasonably graded and organized, graded burning of crude oil and fuel gas is achieved, generation of nitric oxide is effectively reduced, and nitrogen discharging is reduced; and in addition, the crude oil and fuel gas rotational flow low-nitrogen burner is simple in system, easy to maintain, low in maintenance cost and long in service life.

Description

technical field [0001] The invention relates to a crude oil gas swirling low-nitrogen burner for a steam injection boiler that burns crude oil and natural gas to promote the rotary combustion of crude oil and natural gas. 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 burners of gas injection furnaces all use high excess air coefficient combustion, and their simple structure and single organization air, the emission of nitrogen oxides exceeds the standard; therefore, improving the combustion efficiency of gas injection boilers and reducing emissions of nitrogen oxides has become a The top priority o...

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

Images