Bi-spiral flow smokeless steam boiler with chain grates
A chain grate and steam boiler technology, applied in the direction of combustion method, combustion chamber, solid fuel combustion, etc., can solve the problems of affecting heat conduction effect, reducing the comprehensive utilization rate of energy, reducing the service life of pipes, etc. The effects of black smoke and dust accumulation on the heated area, simple and reasonable structure, and low cost
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[0023] The present invention will be further described below in conjunction with the accompanying drawings of the embodiments.
[0024] As shown in Figure 2, Figure 3, Figure 4, the chain grate type double swirling pure smokeless steam boiler of the present invention is based on the existing SZL chain grate type steam boiler shown in Figure 1, except Except for the coal-burning device, the original structure is used, including the outer shell, the water wall 17, the convection tube group 16, the upper and lower drums 18, 15 and the lower coal-burning device. The coal-burning device is composed of a coal hopper 21 and a coal gate 22 The coal loading device, the chain grate 6, the furnace front arch and the furnace back arch 7, the furnace back arch 7 and the chain grate 6 constitute the back hearth, the furnace front arch and the chain grate 6 constitute the front hearth 2, the front hearth 2 is divided into upper hearth 25 and lower hearth 42, upper and lower hearths 25 and 42 are...
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