Energy-saving steam boiler with smoke afterheat recovery function

Abstract

The invention discloses an energy-saving steam boiler with a smoke afterheat recovery function. The energy-saving steam boiler comprises a base; a purifying box is fixedly arranged at the top of the base through a bracket; a smoke inlet cover bonded with the inner wall of the purifying box is fixedly arranged in the purifying box; an afterheat collecting barrel is fixedly arranged on the right side of the top of the purifying box; a smoke inlet pipe is fixedly connected to a smoke outlet at the right end of the smoke inlet cover; the smoke inlet pipe penetrates through the top wall of the purifying box and the bottom wall of the afterheat collecting barrel, and extends to the inner bottom wall of the afterheat collecting barrel; a smoke outlet cover is fixedly connected to the top end of the smoke inlet pipe; a cover plate is fixedly connected to the top of the smoke outlet cover; multiple one-way exhaust holes are uniformly formed in the cover plate; and one-way valves are arranged inthe one-way exhaust holes. Afterheat in smoke is collected through the afterheat collecting barrel, so that heat is reutilized to achieve an energy saving effect; and the smoke is dispersed through the one-way exhaust holes in the cover plate as fine bubbles, so that the heat is conveniently transmitted, and the energy conversion efficiency is higher.

Description

technical field [0001] The invention relates to the field of energy conservation and environmental protection, in particular to an energy-saving steam boiler with the function of recovering flue gas waste heat. Background technique [0002] Smoke is a mixture of gas and smoke and is the main cause of air pollution in residential areas. The composition of the flue gas is very complex. The gas includes water vapor, sulfur dioxide, nitrogen, oxygen, carbon monoxide, carbon dioxide, hydrocarbons, and nitrogen oxides. The smoke includes fuel ash, coal particles, oil droplets, and pyrolysis products. Therefore, The pollution of flue gas to the environment is the compound pollution of various poisons. [0003] Factories often discharge a large amount of flue gas during production and processing, and the heat in the flue gas is high. Most of the existing flue gas treatment devices directly discharge the purified flue gas without recovering the heat, which is not It is beneficial t...

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Problems solved by technology

[0003] Factories often discharge a large amount of flue gas during production and processing, and the heat in the flue gas is high. Most of the existing flue gas treatment devices directly discharge the purified flue gas without recovering the heat, which is not Conducive to saving energy; there are also some flue gas treatment devices that recover the waste heat of the flue gas. When the heat recovery conversion efficiency is low, the proportion is small, and the cost is high, which is not conducive to improving economic benefits.

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