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Foam scrubber

A technology of scrubber and foam, which is applied in the field of foam scrubber, can solve the problems of affecting desulfurization efficiency, reducing desulfurization efficiency, and taking away, so as to reduce secondary pollution, improve removal efficiency, and increase the effect of rapid cooling

Active Publication Date: 2017-08-11
XIANGTAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under the same spraying conditions, the larger the atomized droplet size, the smaller the specific surface area, which reduces the desulfurization efficiency. However, if the droplet size is too small, it is easy to be vaporized or taken away by the air flow, which directly affects the desulfurization efficiency;
[0006] The Venturi scrubber uses a single fluid nozzle with kinetic energy to form droplets. After the flue gas comes out of the intake pipe, it enters the Venturi scrubber for intense contact between the flue gas and the liquid, thereby removing impurities such as dust and sulfur oxides. When air pollutants fluctuate, the flow rate of Venturi scrubbing liquid does not have emergency adjustability, and at the same time, the structure is complex and the operating cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] see figure 1 , is a structural schematic diagram of Embodiment 1 of the foam scrubber provided by the present invention. The foam scrubber 100 includes a washing pipe 11 , a washing tower 12 , a circulating water tank 13 , a first spraying device 14 , a first conical coil 15 , a second spraying device 16 and a second conical coil 17 . The washing pipe 11 communicates with the washing tower 12, and the circulating water tank 13 is arranged at the bottom of the washing tower 12 and communicates with the washing tower 12; the first spraying device 14 is connected with the circulating water tank 13 It is used to spray the flue gas in the washing pipe 11; the first conical coil pipe 15 is arranged in the washing pipe 11, and the inside is filled with a heat exchange medium; the second spraying device 16 and the The circulating water tank 13 is connected to spray the flue gas in the washing tower 12; the second conical coil 17 is arranged in the washing tower 12 and filled w...

Embodiment 2

[0052] see figure 2 , is a structural schematic diagram of Embodiment 2 of the foam scrubber provided by the present invention. The foam scrubber 200 is basically the same as the foam scrubber 100 described in Embodiment 1, except that the heat exchange medium in the first conical coil 25 is different.

[0053] Specifically, the inlet end of the first conical coil 25 is connected to the exhaust port of the washing tower 22, and the outlet end of the first conical coil 25 is connected to the outside. That is, the heat exchange medium in the first conical coil 25 is the purified gas discharged from the washing tower 22 .

[0054] In this embodiment, the technical effect of the first conical coil 25 is the same as that in Embodiment 1. Moreover, the foam scrubber 200 has the advantages of less components, less input, and low cost.

[0055] And in the present embodiment, the second conical coil is not provided in the washing tower 22. Of course, in order to further enhance the...

Embodiment 3

[0057] see image 3 , is a structural schematic diagram of Embodiment 3 of the foam scrubber provided by the present invention. The foam washer 300 is basically the same as the foam washer 100 described in the first embodiment, the difference is that the foam washer 300 further includes a switching device 39 .

[0058] Specifically, the switching device 39 includes a first circulation pipeline 391, a second circulation pipeline 392, a first communication valve 393, a second communication valve 394, a third communication valve 395, a fourth communication valve 396 and a fifth communication valve 397 ,in,

[0059] One end of the first circulation pipeline 391 is connected to the exhaust port of the washing tower 32, and the other end is connected to the inlet end of the first conical coil pipe 35, and the first communication valve 393 is located at the first A circulation pipeline 391;

[0060] One end of the second circulation pipeline 392 is connected to the outlet end of t...

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Abstract

The invention discloses a foam scrubber, which comprises a scrubbing tower, a scrubbing pipe communicating with the scrubbing tower, a circulating water channel communicated with the bottom of the scrubbing tower, a first spray device, a second spray device and a first conical coil, wherein the first spray device and the second spray device are connected with the circulating water channel; the first spray device is used for spraying a flue gas in the scrubbing pipe; the second spray device is used for spraying the flue gas in the scrubbing tower; the first spray device comprises a first spray head arranged in the scrubbing pipe; the first conical coil is arranged in the scrubbing pipe and filed with a heat exchange medium; and the first conical coil and the first spray head are oppositely arranged along the airflow flowing direction at an interval. The foam scrubber is capable of effectively improving the removal efficiency on substances such as SO2 in an exhaust gas, and is good in dust collection and exhaust gas purification effects.

Description

technical field [0001] The invention relates to the technical field of chemical tail gas treatment, in particular to a foam scrubber. Background technique [0002] SO in the atmosphere 2 Sulfuric acid mist and sulfuric acid rain can be formed. When the humidity is high, the temperature is low and there are particles, sulfuric acid mist is easy to form, which will increase the haze and cause harm to human health. In this regard, the state has issued many policies and regulations to control SO 2 emissions. For example, in the national standard GB16297~1996, the smoke emission standard SO 2 ≤960mg / m 3 , now facing the increasingly severe environmental situation, GB31570-2015 "Petroleum Refining Industry Pollutant Discharge Standards" requires current enterprises to implement from July 1, 2017: Flue gas emission standards for acid gas recovery units SO 2 ≤400mg / m 3 , while for special regions require SO 2 ≤100mg / m 3 . [0003] At present, flue gas desulfurization at hom...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/18B01D47/04B01D47/06B01D47/12
CPCB01D47/04B01D47/06B01D47/12B01D53/1406B01D53/1481B01D53/18B01D2258/0283
Inventor 易争明
Owner XIANGTAN UNIV
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