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发明公开
CN103353120A 一种脱硫尾部烟气余热及凝水回收系统 无效 - 驳回

一种脱硫尾部烟气余热及凝水回收系统
摘要：
本发明公开了一种脱硫尾部烟气余热及凝水回收系统，包括脱硫塔出口烟道上布置的第一冷凝换热器和第二冷凝换热器，第二冷凝换热器之后布置有高效除雾器，在第二冷凝换热器上连接有冷却循环水泵，在第一冷凝换热器上连接有冷却水出口；第一冷凝换热器、第二冷凝换热器和高效除雾器底部分别连接有凝水回收器；冷却循环水泵输送的冷却水从第二冷凝换热器上部进入，与脱硫后的烟气逆流接触，进行换交热，从第一冷凝换热器上的冷却水出口排出；最后通过高效除雾器排出。可用于电厂脱硫尾部烟气的余热及凝水回收，对电厂节水和节能有重要意义。
摘要（英）：

The invention discloses a system for recycling afterheat and condensed water of desulfurized tail flue gas. The system for recycling the afterheat and the condensed water of the desulfurized tail flue gas comprises a first condensing heat exchanger and a second condensing heat exchanger which are arranged on a desulphurizing tower outlet flue, wherein an efficient defogger is arranged behind the second condensing heat exchanger; a circulating cooling water pump is connected onto the second condensing heat exchanger; a cooling water outlet is connected onto the first condensing heat exchanger; condensed water recyclers are connected to the bottoms of the first condensing heat exchanger, the second condensing heat exchanger and the efficient defogger respectively; cooling water conveyed by the circulating cooling water pump enters the second condensing heat exchanger from the upper part, of the second condensing heat exchanger to be in a countercurrent contact with desulfurized flue gas for heat exchange, is drained from the cooling water outlet on the first condensing heat exchanger, and is finally drained through the efficient defogger. The system can be used for recycling the afterheat and the condensed water of the desulfurized tail flue gas in a power plant, so that the system has a great significance in water conservation and energy conservation of the power plant.

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