White smoke eliminating integrated system

Abstract

The invention discloses a white smoke eliminating integrated system. The white smoke eliminating integrated system comprises heat exchange devices and heat exchange medium control equipment, wherein the heat exchange devices are configured to be capable of increasing the temperature of clean smoke through a heat exchange medium, and then the unsaturation degree of the clean smoke is increased, sothat the clean smoke is still in an unsaturated state when leaving a smoke discharging device to enter the atmosphere. The white smoke eliminating system further combines a dust removing and demistingdevice. The heat exchange medium is introduced into the heat exchange devices, absorbs heat at a raw smoke section and releases the heat at a clean smoke section, so that the temperature of the cleansmoke is increased, and then the phenomenon of white smoke generated during discharging through a chimney is eliminated; and moreover, the cost is low, the operation energy consumption is low, the reliability is high, and the white smoke eliminating integrated system can be used in the smoke cleaning fields such as a thermal power plant, a steel plant, a paper mill, a glass factory and a chemicalplant.

Description

technical field [0001] The invention relates to the field of flue gas purification, in particular to an integrated system for eliminating white smoke, which can be used in tail gas treatment systems of thermal power plants, iron and steel plants, paper mills, glass factories, and chemical plants. Background technique [0002] When the exhaust gas of existing coal-fired power plants is discharged, because the discharged flue gas is saturated or tends to be saturated, when it is discharged from the chimney, a large amount of condensed water will be precipitated when it is cold, and a large amount of water vapor will be generated. The "white smoke" is a kind of visual pollution, and water droplets will fall around the chimney, forming "chimney rain". Bring many inconveniences to the production site. [0003] At present, the way to solve this kind of problem is basically to lead the original flue gas to the clean flue gas area, heat the low-temperature flue gas with high-temper...

AI Technical Summary

Problems solved by technology

[0004] 1. Leakage problem. When the original flue gas and the clean flue gas exchange heat, there will be leakage. The original flue gas leaks to the clean flue, so that the clean flue gas dust, sulfur dioxide, nitrogen oxides and other pollutants are discharged beyond the standard.

[0005] 2. Corrosion problem. The above-mentioned heat exchange method basically uses containers such as metal shells for flue gas heat exchange. When the flue gas cools down to the acid dew point, the heat exchanger body will be corroded

[0006] 3. The cost is high. This method requires the production of bulky heat exchange devices and foundations. Taking a 300MW unit as an example, the total cost exceeds RMB 20 million or even higher

[0007] 4. The energy consumption of the equipment is high. In view of its large size, it needs more fans and other power equipment, and the energy consumption of operation is very large.

The operation of the equipment is unstable, and the problem of blockage and scaling is serious

Its structure and implementation are not conducive to flushing or cleaning. After a period of operation, in addition to encountering corrosion problems, the equipment body will also have blockage problems

Images