High performance fuel heat accumulation type condensation energy-saving boiler

Abstract

The invention discloses a heat accumulating type condensing and energy saving boiler for high energy fuel, which comprises a boiler body. Two or more combustors are arranged in the boiler body, a high-temperature combustion-supporting air inlet opening and a fuel spraying opening are arranged on the combustor, a checker chamber is connected with the high-temperature combustion-supporting air inletopening, a normal temperature combustion-supporting air inlet and a low-temperature flue gas outlet are connected with the checker chamber, a direction change device is arranged between the normal temperature combustion-supporting air inlet and the low-temperature flue gas outlet, and a condensing heat recoverer is connected with the low-temperature flue gas outlet. On one hand, when the fuel gasis discharged, the waste heat of the fuel gas is recovered through the checker chamber and the condensing heat recoverer, thereby the heat energy loss is reduced, and the combustion efficiency is enhanced; on the other hand, after passing through the checker chamber, the normal temperature combustion-supporting air assists in combustion supporting, and thereby the combustion temperature can be increased; thirdly, a plurality of combustors adopts periodic reversing combustion, thereby the partial high temperature zones in the combustors are avoided, and the internal temperature distribution ofthe combustors is more uniform. The boiler is applied to various gas fired boilers.

Description

technical field [0001] The invention relates to a steam generating device, in particular to a boiler. Background technique [0002] Boilers are commonly used steam generating devices, but the existing boilers generally have low combustion efficiency and high combustion costs. [0003] Such as figure 1 Shown is a structural schematic diagram of a boiler in the prior art. The interior of the furnace body constitutes a combustion chamber, and a burner is installed on one side of the furnace body; aisle. Combustion-supporting air at room temperature is mixed with fuel and burned in the combustion chamber, and the hot flue gas after combustion is discharged out of the combustion chamber through the hot flue gas discharge channel. [0004] The above-mentioned prior art has at least the following disadvantages: first, when the calorific value of the fuel is the same, low-temperature air supports combustion, the temperature in the combustion chamber is relatively low, and the tem...

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Problems solved by technology

[0004] The above-mentioned prior art has at least the following disadvantages: firstly, when the calorific value of the fuel is the same, the temperature in the combustion chamber is low due to the low-temperature air combustion, and the temperature distribution in the combustion chamber is uneven, and there are local high-temperature areas, which affect the life of the furnace body; secondly, The exhaust gas temperature is high, taking away a lot of heat energy, and the combustion efficiency is low

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