Horizontal water boiler with ash holes

Abstract

The invention relates to a horizontal water boiler with ash holes. The upper portion of the boiler is provided with a boiler shell. The downtake tubes are connected with a front header box, a rear header box and a side header box. The front header box is connected with a front arch and a front shed tube to extend into the boiler shell. The rear header box is connected with a rear arch to extend into the boiler shell. The side header box is connected with a side water-cooled wall. Side water-cooled wall tubes are crossed to extent into the boiler shell. The boiler shell is arranged on the outerportion of a boiler hearth. The horizontal water boiler is characterized in that the front arch comprises a refractory slab formed by wrapping water tubes through refractory cement, and a slab body is provided with the multiple ash holes. Under the condition that the original height remains unchanged, the rear arch is additionally arranged to increase the height of the boiler hearth in disguise,the combustion effect is good, and the thermal efficiency is high. The side water-cooled wall tubes are crossed to extent into the boiler shell. The boiler shell is arranged outside the boiler hearth,so that the boiler shell does not make direct contact with flames and high-temperature flue gas. The defect of swelling of the boiler shell is overcome fundamentally. The heat transfer effect is improved. The service life of the boiler shell is prolonged. The boiler is internally provided with a smoke chamber, and the defect that a heat insulation layer falls off easily and leaks air is overcome.Through arrangement the front arch and the ash holes, ash removing is convenient, and the boiler shutdown frequency is reduced.

Description

technical field [0001] The invention relates to a horizontal water boiler with an ash drop hole. Background technique [0002] Horizontal water-fire tube shell boiler, its structure adopts water-cooled wall tubes arranged on both sides of the single pot shell to form the furnace and the heating surface of the burnout chamber. In the furnace, the gas first conducts radiation heat exchange with the pot shell and water-cooled wall, then enters the pot shell smoke pipe through the airfoil flue, the front smoke box, the economizer, and the dust collector use induced air to discharge the flue gas into the atmosphere through the chimney. The overall structure of the above-mentioned boiler and its corresponding heat exchange mode make the existing shell boilers have the following problems for boilers with large evaporation per unit time: 1. The furnace height is small, the combustion is insufficient, and the carbon content of fly ash is high. The thermal efficiency is low, and the ...

AI Technical Summary

Problems solved by technology

The overall structure of the above-mentioned boiler and its corresponding heat exchange mode make the existing shell boilers have the following problems for boilers with large evaporation per unit time: 1. The furnace height is small, the combustion is insufficient, and the carbon content of fly ash is high. The thermal efficiency is low, and the wear of the smoke pipe is large

2. In the heat exchange mode of the above-mentioned boiler, the high-temperature flue gas from the furnace directly acts on the bottom of the boiler shell, and a large amount of scale is easily deposited on the bottom of the boiler, which causes high-temperature creep phenomenon at the bottom of the boiler shell, causing deformation and bulging, which affects the heat transfer effect and service life of the boiler

3 The steel front smoke box is easy to be burned and deformed, resulting in air leakage and inconvenient maintenance

4. There is no ash drop hole in the front smoke box, so it is inconvenient to clean the ash

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