Efficient complementary combustion type waste heat boiler

Abstract

The invention relates to an efficient complementary combustion type waste heat boiler and belongs to the technical field of waste heat boilers. The efficient complementary combustion type waste heat boiler comprises a boiler body, a front smoke box and a rear smoke box, wherein the front smoke box and the rear smoke box are arranged at two ends of the boiler body; a first smoke pipe set is arranged on one side of an inner cavity of the boiler body, a hearth is arranged in the other side of the inner cavity of the boiler body, a second smoke pipe set is arranged above the hearth, and a kiln eyeis formed in the rear end of a smoke chamber barrel; one end of a front box outer cylinder of the front smoke box is connected with the front end of the boiler body, a front smoke box panel is arranged at the other end of the front box outer cylinder and provided with a front smoke box cover plate, a smoke collecting chamber is defined by the outer cylinder, the cover plate and the panel, and a front smoke box partition plate is arranged in the smoke collecting chamber to divide the smoke collecting chamber into two independent smoke collecting chamber bodies which are separately provided with chimneys; a smoke inlet chamber of the rear smoke box communicates with the first smoke pipe set. When smoke in the waste heat boiler cannot meet the heat supply requirement, while burners are addedto generate high-temperature smoke to meet heat supply, heat exchange efficiency is improved, and the production cost is saved; moreover, the structure is simple and operation is convenient.

Description

technical field [0001] The invention relates to a high-efficiency supplementary combustion waste heat boiler, which belongs to the technical field of waste heat boilers. Background technique [0002] As a kind of energy saving and emission reduction equipment, the waste heat boiler is an indispensable key link in the smelting process. Its main function is to cool down the flue gas generated by the furnace body in the smelting process, and at the same time use the heat released in the flue gas cooling process to generate Steam, which is then used in other production processes. The stability of waste heat boiler operation is directly related to the efficiency of the smelting process and the reliable operation of subsequent related systems. The smelting process at the front end of the waste heat boiler produces a large amount of high-temperature flue gas to exchange heat with the working fluid to produce steam or hot water. However, at present, most projects do not generate h...

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Problems solved by technology

Although this patent solves the problem of insufficient heat supply, the structure is complicated, the production cost is increased, and the operation is cumbersome; moreover, the flue gas in the flue of the waste heat boiler and the high-temperature flue gas generated by the burner are in the same cavity, and the high-temperature flue gas and the waste heat flue gas It is bound to be mixed together, which makes the time to meet the heating requirements longer, increases the fuel consumption used by the burner, and increases the production cost

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