Heating and steam dual-purpose boiler

Abstract

The invention discloses a heating and steam dual-purpose boiler, which comprises a hearth, a water tank, at least one heating core, a flue gas secondary utilization device, a flue gas purification device and a positioning fire grate device, wherein the water tank is arranged on the external side and at the top of the hearth and the positioning fire grate device is arranged at the bottom of the hearth. The water tank consists of a water chamber and a steam chamber. The at least one heating core is sealed at the top of the water tank. One end of the heating core is communicated with the hearth and the other end of the heating core is connected with a flue gas chamber. The flue gas chamber is connected with the flue gas secondary utilization device. The gas secondary utilization device is communicated with the flue gas purification device. Since the heating and steam dual-purpose boiler uses a positioning fire grate for concentrated combustion, not only can fierce and full combustion be realized, but also the discharge time and the discharge temperature of slag can be manually controlled, the slag is discharged out of a boiler body after the temperature of the slag is thoroughly decreased, the coal burn-off rate is improved, the slag discharge temperature is reduced, the heat loss is decreased and the thermal efficiency of the boiler is improved.

Description

technical field [0001] The invention relates to the field of boiler heating and power generation, in particular to a dual-purpose boiler for heating and steam. Background technique [0002] Existing heating and steam dual-purpose boiler chimneys discharge a large amount of white air mass, which is steam generated by water absorbing heat. Changing water into steam is a cooling process, which consumes a lot of heat and reduces the thermal efficiency of the boiler. [0003] Existing steam boilers use powder-spraying combustion, in which compressed air sprays preheated pulverized coal into the combustion chamber for combustion, and the pulverized coal floats in the combustion chamber space in a suspended state. Chimneys vent into the atmosphere, causing dust pollution. [0004] The existing heating and steam dual-purpose boiler has a large combustion chamber and a small effective heating area, and the walls are lined with thick refractory bricks, which block the direct transfer...

AI Technical Summary

Problems solved by technology

[0007] The existing heating and steam dual-purpose boilers cannot decompose water into hydrogen and carbon monoxide to support combustion, cannot develop and utilize renewable energy, cannot supply combustible gas, and cannot add additional combustible sources, so the thermal efficiency of the boiler is low

[0008] The existing boiler adopts chain-type moving grate, the coal is burned in a diffuse state, the combustion is not violent and sufficient, the coal cannot be completely burned, the furnace temperature is low, and the thermal efficiency of the boiler is low

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