Efficient waste heat boiler for sintering flue

Abstract

The invention relates to the field of heat exchange, in particular to a sintering flue efficient waste heat boiler which comprises a flue pipe body and a heat exchange device, the flue pipe body is composed of an air inlet pipeline and an air outlet pipeline, a middle connecting pipeline is coaxially connected between the air inlet pipeline and the air outlet pipeline, and a flange plate is further arranged at the air inlet end of the air inlet pipeline; a fixing part is further arranged at the air outlet end of the air outlet pipeline, the heat exchange device comprises a water circulation pipe, a water suction mechanism and an airflow acceleration mechanism, the water suction mechanism is connected with the water circulation pipe, and a linkage mechanism capable of driving the water suction mechanism to work through the airflow acceleration mechanism is further arranged between the middle connecting pipeline and the air outlet pipeline. The airflow acceleration mechanism drives the water absorption mechanism to work under connection of the linkage mechanism, heat exchange between smoke and condensate water is completed, the cost is reduced, it is guaranteed that the smoke inlet speed is in direct proportion to the condensate water circulation speed, and the situation that heat exchange between the smoke and the condensate water is insufficient is avoided.

Description

technical field [0001] The invention relates to the field of heat exchange, in particular to a high-efficiency waste heat boiler with a sintering flue. Background technique [0002] At present, in the boiler combustion system, flue gas waste heat recovery technology is the energy-saving technology with the most obvious energy-saving benefits and the fastest effect. According to the requirements of the national environmental protection policy, coal-fired boilers must have a flue gas desulfurization system. Limestone-gypsum wet desulfurization technology is the main technology. However, the operating temperature of limestone-gypsum wet desulfurization process is relatively low, and it is far away from the designed exhaust gas temperature of the boiler. Usually, water spraying is required in the desulfurization system to cool down the flue gas temperature. This not only loses the heat of the flue gas between the exhaust gas temperature and the desulfurization temperature, but a...

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Problems solved by technology

[0005] Based on this, it is necessary to provide a high-efficiency waste heat boiler for sintering flue in view of the existing technical problems. This application uses the airflow acceleration mechanism to drive the work of the water absorption mechanism under the connection of the linkage mechanism, and completes the exchange between flue gas and condensed water. heat, which reduces the cost, ensures that the rate of flue gas discharge is proportional to the rate of condensed water circulation, and avoids insufficient heat exchange between flue gas and condensed water

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