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Ultralow-emission, water-saving and smoke suppression synergistic advanced purification system and method thereof

A purification system and smoke elimination technology, which is applied in the field of resource and environment flue gas purification, can solve problems such as system fouling and blockage, unfavorable production and energy saving, and endangering production safety.

Inactive Publication Date: 2016-09-07
GUODIAN ENVIRONMENTAL PROTECTION RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For the elimination of gypsum rain and white smoke, the current conventional method is to directly reheat the flue gas. This measure has high energy consumption and will greatly increase the coal consumption of power generation. Hidden dangers of production safety

Method used

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  • Ultralow-emission, water-saving and smoke suppression synergistic advanced purification system and method thereof
  • Ultralow-emission, water-saving and smoke suppression synergistic advanced purification system and method thereof
  • Ultralow-emission, water-saving and smoke suppression synergistic advanced purification system and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Such as figure 1 As shown, the multi-functional ultra-low emission water-saving and smoke-eliminating collaborative purification system of the present invention mainly includes four parts, which are respectively a micro-cooled phase change accelerator 1 and a multi-pollutant trap arranged in the flue at the outlet of the desulfurization tower. 2. Micro heat smoke eliminator 3 and corresponding flushing and drainage system. The distance between the micro-cooling phase change accelerator and the multi-pollutant trap is set to 10 m; the distance between the multi-pollutant trap and the micro-heat smoke eliminator is 10 m.

[0043] According to the positional relationship of each part, the flue gas at the outlet of the desulfurization tower 5 is sequentially treated by the slightly cold phase change accelerator 1, the multi-pollutant trap 2 and the flue gas slightly heat smoke eliminator 3, and then discharged through the chimney.

[0044] The flushing system includes pum...

Embodiment 2

[0047] On the basis of Embodiment 1, the structure of the micro-cooled phase change accelerator and the micro-heat smoke eliminator in the system of the present invention is similar, and they are arranged in the flue 19, such as image 3 As shown, it mainly consists of a shell 11, an inlet medium flow pipe 12 and its (inlet) isolation shut-off valve 13, an inlet distribution box 14, a heat exchange pipe 16 passing through the flue perpendicular to the flue gas flow, and an outlet confluence Box 15, outlet medium flow line 12 and its (outlet) isolation shut-off valve; inlet distribution box 14 and outlet confluence box 15 are symmetrically arranged, and are divided into several small chambers, and each group of inlet and outlet chambers is correspondingly connected to a group of heat exchangers Pipeline 16, the corresponding inlet and outlet medium flow pipes and isolation shut-off valves to achieve independent control functions in different areas; the side walls of the flue gas...

Embodiment 3

[0049] The collaborative purification method for ultra-low emission of flue gas and smoke elimination of the present invention adopts the system processing process of Embodiment 2 as follows:

[0050] First measure the following data: the actual temperature T of the flue gas at the outlet of the desulfurization tower 1 , ambient air humidity H 0 , Flue gas humidity H at the outlet of desulfurization tower 1 , Determine the cooling economic cooling coefficient η, the value range is 0.05-1 (0.5 in this example), and the micro-thermal economic coefficient δ, the value range is 0-0.75 (0.35 in this example).

[0051] In the following formula: T 2 The flue gas temperature, T 3 It is the flue gas temperature that should be controlled after heating the micro heat smoke eliminator.

[0052] First, the desulfurization tower outlet T 1 The flue gas at ℃ is cooled to T by the micro-cooled phase change accelerator 2 ℃ Condensation, mist removal and dust removal treatment, after the ...

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Abstract

The invention provides an ultralow-emission, water-saving and smoke suppression synergistic advanced purification system and a method thereof. The system and the method are used for further processing outlet smoke in order to meet ultralow emission, smoke suppression and water saving synergistic advanced purification requirements. The system mainly includes a slight cooling phase change aggregation promoter, a multi-pollutant trap and a gentle heating smoke eliminator which are sequentially arranged in the outlet flue of a desulfurization tower, smoke discharged from the desulfurization tower is sequentially processed through the slight cooling phase change aggregation promoter, the multi-pollutant trap and the gentle heating smoke eliminator, and the processed smoke is discharged through a chimney. Compared with present routine methods with large energy consumed in direct heating of saturated or supersaturated smoke containing a large amount of water vapor to an unsaturated state through directly heating the smoke and alleviating white smoke escaping of the chimney, the method adopting slight cooling and gentle heating to suppress smoke purification, adopted in the smoke suppression synergistic purification system in the invention has the advantages of promotion of removal of fine particles, droplets, soluble salts and other pollutants, recovery of water in the smoke, obvious energy saving and consumption reduction, and true realization of smoke suppression.

Description

Technical field: [0001] The invention provides an ultra-low emission water-saving and smoke-eliminating collaborative purification system and method, belonging to the field of resource and environment flue gas purification. Background technique: [0002] With the control of air pollutants in thermal power plants entering the ultra-low emission stage, NOx and SO in flue gas emissions from thermal power plants 2 The emission concentration requirements of dust, dust and other pollutants should be controlled at 50 mg / m 3 , 35 mg / m 3 , 10mg / m 3 Below, even some areas (such as Shanghai, Zhejiang, etc.) require control measures to eliminate the phenomenon of gypsum rain and colored smoke rain in chimneys after desulfurization, so as not to emit white smoke. [0003] At present, ultra-low NOx emissions can be achieved through low-nitrogen combustion + high-efficiency SCR technology, and SO 2 Ultra-low emission, and the ultra-low emission of smoke and dust has been plagued by c...

Claims

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Application Information

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IPC IPC(8): B01D50/00B01D53/00B01D53/26B01D53/14
CPCB01D50/00B01D53/00B01D53/002B01D53/005B01D53/1456B01D53/1481B01D53/1493B01D53/26B01D53/265B01D2252/103B01D2257/2045B01D2257/2047B01D2257/302B01D2257/404B01D2257/80B01D2258/0283
Inventor 许月阳薛建明王宏亮管一明戴伟伟付森林
Owner GUODIAN ENVIRONMENTAL PROTECTION RES INST CO LTD
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