Single-drum oblique-injection down-intake gas-and-oil-fired corner tube boiler

Abstract

The invention discloses a single-drum oblique-injection down-intake gas-and-oil-fired corner tube boiler which comprises a boiler body provided with a combustion system; a support structure is arranged in the boiler body, and the support structure comprises a front side down pipe, a middle down pipe, and a rear side down and exhaust pipe; and the two ends of each of the front side down pipe, the middle down pipe and the rear side down and exhaust pipe are correspondingly connected with a side wall upper header and a side wall lower header which are horizontally arranged, a boiler drum is arranged above one side of the boiler body, a water inlet pipe is connected to the boiler drum, a down pipe connected with the middle down pipe is connected to the bottom of the boiler drum, a front and rear arch lower header is connected to the bottom of the middle down pipe, the upper part of the interior of the boiler body is provided with a front and rear arch upper header communicating with the front and rear arch lower header, and the front and rear arch upper header communicates with the boiler drum through an upper water return pipe. The single-drum oblique-injection down-intake gas-and-oil-fired corner tube boiler is long in fuel retention time, free in flame extension, full in combustion of fuel, stable in support structure and safe in water circulation.

Description

technical field [0001] The invention relates to the technical field of boilers, in particular to a single-drum oblique injection gas-fired corner-tube boiler with lower intake air. Background technique [0002] As we all know, the current gas-fired boilers generally have side air intake, the distance between the front and rear of the combustion chamber is short, the height of the combustion chamber is low, the volume of the combustion chamber is small, and the support structure and water circulation are not safe. This structure leads to short residence time of the flue gas and needs to turn to enter the upper part of the furnace, the flame cannot stretch freely, the gas combustion is uneven, the fuel combustion is insufficient, the flue gas filling degree of the combustion chamber is not high, the emission concentration of nitrogen oxides is high, and the flue gas is directly washed The rear wall of the furnace is severely worn, and the maintenance rate is high, which increa...

AI Technical Summary

Problems solved by technology

This structure leads to short residence time of the flue gas and needs to turn to enter the upper part of the furnace, the flame cannot stretch freely, the gas combustion is uneven, the fuel combustion is insufficient, the flue gas filling degree of the combustion chamber is not high, the emission concentration of nitrogen oxides is high, and the flue gas is directly washed The rear wall of the furnace is severely worn, the maintenance rate is high, and the use cost is increased

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