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Flue gas moisture recovery system and method

A recovery system and flue gas technology, applied in the field of boiler waste heat recovery, can solve the problems of dense, unfavorable pollutant diffusion, and reduce chimney output, etc.

Active Publication Date: 2014-12-24
YANTAI LONGYUAN POWER TECH
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Problems solved by technology

[0004] The system or method for recovering the moisture in the flue gas in the prior art is to reduce the temperature of the flue gas to below the water vapor dew point by means of cooling and heat exchange, and the water vapor is condensed into liquid water for recycling, and the cooled flue gas is directly exhausted. To the chimney, it will reduce the output of the chimney, and also produce thick "white smoke", which is not conducive to the diffusion of pollutants in the high-altitude atmosphere

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Embodiment Construction

[0021] The present invention will be described more fully hereinafter with reference to the accompanying drawings, in which exemplary embodiments of the invention are illustrated. The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention. The technical solution of the present invention will be described in various aspects in conjunction with the figures and embodiments below.

[0022] figure 1 It is a schematic diagram of an embodiment of the flue gas moisture recovery system of the present invention. As shown in the figure,...

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Abstract

The invention discloses a flue gas moisture recovery system and method. Flue gas discharged by a boiler sequentially passes a desulfurization tower (1), a first heat exchanger (2) and a second heat exchanger (3), enters a chimney (4) and is discharged, the flue gas passing the desulfurization tower (1) is cooled by the first heat exchanger (2), water vapor in the flue gas is coagulated into liquid water, and the flue gas is heated by the second heat exchanger (3). The desulfurized flue gas is cooled and dewatered by the aid of an absorption heat pump and then heated, flue gas moisture can be recovered, chimney output is improved, 'gypsum rain' and 'white smoke' discharging are relieved, and contaminant can be diffused towards high altitude.

Description

technical field [0001] The invention relates to the technical field of boiler waste heat recovery, in particular to a flue gas moisture recovery system and method. Background technique [0002] my country is a country that lacks water resources, and its per capita water resources are only 1 / 4 of the world's level. Water shortages are especially severe in the northwestern regions, where coal resources are often abundant and coal-fired power plants are developing rapidly. Coal-fired power plants consume a lot of water, and the flue gas after coal combustion will carry a large amount of water after wet desulfurization, and the water will be discharged into the atmosphere with the flue gas, resulting in waste of water resources. If the moisture in the flue gas after desulfurization can be recycled, it will be of great significance to areas with scarce water resources. [0003] In the prior art, there are many ways to utilize the heat energy in the flue gas. For example, the flu...

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Application Information

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IPC IPC(8): F23J15/00
Inventor 蒋海涛付玉玲贾明华张玉斌王罡杨天亮苗雨旺蔡兴飞褚晓亮
Owner YANTAI LONGYUAN POWER TECH
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