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Dry-wet-process combined desulfuration denitration operating device and method

A technology for desulfurization, denitrification, and operation of devices, which is applied in separation methods, chemical instruments and methods, gas treatment, etc., can solve problems such as low efficiency and easy deactivation of catalysts, and achieve high efficiency, low equipment maintenance costs, and simple processes.

Inactive Publication Date: 2019-08-30
DONGYING JUNYUAN PETROLEUM TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wet method has simple equipment, low cost, but low efficiency; the dry method has high efficiency, but has the disadvantage that the catalyst is easily deactivated

Method used

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  • Dry-wet-process combined desulfuration denitration operating device and method
  • Dry-wet-process combined desulfuration denitration operating device and method
  • Dry-wet-process combined desulfuration denitration operating device and method

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Embodiment 1

[0023] Embodiment 1, a dry-wet method combined desulfurization and denitrification operation device mentioned in the present invention includes a wet method rough desulfurization and denitrification part and a dry method fine desulfurization and denitrification part, and the wet method rough desulfurization and denitrification part includes lye pool 1, The first lye tank 2, the internal circulation pump 3, the external circulation pump 4, the first gas distributor 5, the liquid distributor, the mist catcher 7 and the wet rough desulfurization and denitrification a, one of the first lye tank 2 One side is connected to the liquid distributor on the wet rough desulfurization and denitrification a through the first flow regulating valve 14 and the external circulation pump 4; the other side of the first lye tank 2 is connected with the internal circulation pump 3 through the second flow regulating valve 15 To the lye pool 1; the underside of the wet rough desulfurization and denitr...

Embodiment 2

[0040] Embodiment 2: The dry-wet method combined desulfurization and denitrification operating device mentioned in the present invention, such as figure 1 As shown, it includes: lye pool 1, first lye tank 2, internal circulation pump 3, external circulation pump 4, first gas distributor 5, first liquid distributor 6, mist catcher 7, second liquid distribution 8, absorption liquid discharge tank 9, flue gas inlet 10, flue gas outlet 11, absorption liquid discharge port 12, flow meter 13, first flow regulating valve 14, second flow regulating valve 15, wet rough desulfurization and denitrification tower a The diameter φ3800mm, height 20m; dry fine desulfurization and denitrification tower: divided into upper and lower sections, the upper section is the absorption section, the diameter φ 1 3800mm, height 6m, the lower section is the adsorbent regeneration section, diameter φ 2 3800mm, height 3m, dry fine desulfurization and denitrification tower includes absorption section 17, r...

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Abstract

The invention relates to a dry-wet-process combined desulfuration denitration operating device and a method. The technical scheme of the invention is as follows: the device comprises a wet-process coarse desulfuration denitration part and a dry-process refined desulfuration denitration part, wherein the wet-process coarse desulfuration denitration part comprises an alkali liquor pool, a first alkali liquor tank, an internal circulating pump, an external circulating pump, a first gas distributor, a liquid distributor, a mist trap and a wet-process coarse desulfuration denitration tank, and thedry-process refined desulfuration denitration part comprises an absorption section, a regeneration section, a second alkali liquor tank and a dry-process refined desulfuration denitration tank. The device and the method have the beneficial effects that a majority of acidic gases, i.e., SO2, SO3 and NO2 are firstly removed from dedusted flue gas through NaOH solution absorption in a wet-process coarse desulfuration denitration tower, and then, the flue gas enters a dry-process refined desulfuration denitration tower and is subjected to absorption purifying by a semicoke adsorbent so as to completely absorb NO, NO2 and a minority of sulfur-bearing compounds remaining in the flue gas; and device and the method have the characteristics of high desulfuration denitration efficiency, long adsorbent service life, simple process, low equipment maintenance cost and the like.

Description

technical field [0001] The invention relates to the technical field of environmental protection of flue gas desulfurization and denitrification and mass transfer and heat transfer in chemical engineering, in particular to a dry-wet combined desulfurization and denitrification operating device and method. Background technique [0002] Flue gas emissions from industrial coal-fired boilers are currently one of the main sources of sulfur dioxide and nitrogen oxides, and are one of the main pollutants affecting my country's atmospheric environment. According to statistics, 70% of the country's soot emissions, 70% of sulfur dioxide emissions, 67% of nitrogen oxides, and about 70% of carbon dioxide emissions come from coal combustion. In this regard, the country has strictly controlled the emission of pollutants in coal-fired flue gas in many fields such as energy conservation and emission reduction, pollutant prevention and control, and the fight against air pollution. The state ...

Claims

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Application Information

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IPC IPC(8): B01D53/75B01D53/78B01D53/86B01D53/60
CPCB01D53/60B01D53/75B01D53/78B01D53/8637B01D2251/104B01D2251/304B01D2251/604B01D2253/102B01D2255/2073B01D2255/702B01D2258/0283Y02A50/20
Inventor 苗广发于睿周孟磊胡春建崔玲杨秀文曹桂荣代晓东
Owner DONGYING JUNYUAN PETROLEUM TECH DEV CO LTD