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Flue gas desulfurization and denitrification method

A desulfurization, denitrification and flue gas technology is applied in the field of coke oven flue gas treatment, which can solve the problems of high investment cost and low removal efficiency, and achieve high desulfurization efficiency, high removal rate and good effect.

Inactive Publication Date: 2019-03-22
ZHEJIANG FEIDA ENVIRONMENTAL SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The existing flue gas desulfurization and denitrification process has the following problems: low removal efficiency and high investment cost. Therefore, we propose a method for flue gas desulfurization and denitrification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of flue gas desulfurization and denitrification method that the present invention proposes, its preparation raw material and removal method thereof comprise the following steps:

[0023] S1, material selection: select distilled water and boil the water;

[0024] S2, selection: choose FeCl 3 solution;

[0025] S3, FeCl 3 Drop the solution into boiling water and continue to boil until a reddish-brown liquid is formed to obtain the desulfurizer;

[0026] S4, the flue gas is cooled to 50°C through a heat exchanger, and passed into the obtained desulfurizing agent to perform a desulfurization reaction;

[0027] S5, passing the flue gas into the obtained denitration agent to perform a denitration reaction;

[0028] S6, performing ultraviolet irradiation and electron beam irradiation on the first desulfurization and denitrification flue gas at the same time to obtain the second desulfurization and denitrification flue gas;

[0029] S7, water spray treatment;

[00...

Embodiment 2

[0036] A kind of flue gas desulfurization and denitrification method that the present invention proposes, its preparation raw material and removal method thereof comprise the following steps:

[0037] S1, material selection: select distilled water and boil the water;

[0038] S2, selection: choose FeCl 3 solution;

[0039] S3, FeCl 3 Drop the solution into boiling water and continue to boil until a reddish-brown liquid is formed to obtain the desulfurizer;

[0040] S4, the temperature of the flue gas is lowered to 100°C through the heat exchanger, and the flue gas is passed into the obtained desulfurizer to carry out the desulfurization reaction;

[0041]S5, passing the flue gas into the obtained denitration agent to perform a denitration reaction;

[0042] S6, performing ultraviolet irradiation and electron beam irradiation on the first desulfurization and denitrification flue gas at the same time to obtain the second desulfurization and denitrification flue gas;

[0043...

Embodiment 3

[0051] A kind of flue gas desulfurization and denitrification method that the present invention proposes, its preparation raw material and removal method thereof comprise the following steps:

[0052] S1, material selection: select distilled water and boil the water;

[0053] S2, selection: choose FeCl 3 solution;

[0054] S3, FeCl 3 Drop the solution into boiling water and continue to boil until a reddish-brown liquid is formed to obtain the desulfurizer;

[0055] S4, the temperature of the flue gas is lowered to 90°C through a heat exchanger, and the flue gas is passed into the obtained desulfurizer to perform a desulfurization reaction;

[0056] S5, passing the flue gas into the obtained denitration agent to perform a denitration reaction;

[0057] S6, performing ultraviolet irradiation and electron beam irradiation on the first desulfurization and denitrification flue gas at the same time to obtain the second desulfurization and denitrification flue gas;

[0058] S7, ...

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PUM

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Abstract

The invention relates to a flue gas desulfurization and denitrification method. Preparation raw materials are selected and a removal method comprises the following steps of S1, selecting materials: selecting distilled water and boiling the water; S2, selecting; selecting an FeCl3 solution; S3, dropwise adding the FeCl3 solution into the boiled water; continually boiling until reddish brown liquidis generated, so as to obtain a desulfurization agent; S4, cooling flue gas to 50 to 100 DEG C through a heat exchanger and introducing the flue gas into the obtained desulfurization agent; S5, introducing the flue gas into the obtained denitrification agent and carrying out denitrification reaction; S6, carrying out ultraviolet irradiation and electron beam irradiation on primary desulfurizationand denitrification flue gas at the same time, so as to obtain secondary desulfurization and denitrification flue gas; S7, carrying out water spraying treatment; S8, discharging denitrified coke ovenflue gas through an induced draft fan. By adopting two times of the desulfurization and denitrification method, the removal efficiency is high and pollutants including SO2, NOx and the like in the flue gas can be removed, so that pollutions to the air are reduced, damage to humans is reduced and the humans are healthier.

Description

technical field [0001] The invention relates to the technical field of coke oven flue gas treatment, in particular to a method for flue gas desulfurization and denitrification. Background technique [0002] At present, coal is used as the main energy source, and the SO emitted during its combustion process 2 and NO x The total amount of pollutants such as pollutants is large, which will cause serious air pollution and endanger human health. With the rapid development of my country's economy, the increase of industrial pollution sources and the corresponding environmental protection laws and regulations are becoming more and more stringent, and at the same time promote the progress of environmental governance technology , A large number of environmental pollution source control technologies have been produced, among which many technologies have been developed for the removal of sulfur dioxide and nitrogen oxides from flue gas. [0003] The existing flue gas desulfurization a...

Claims

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Application Information

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IPC IPC(8): B01D53/75B01D53/78B01D53/82B01D53/50B01D53/56
CPCB01D53/007B01D53/507B01D53/56B01D53/75B01D2251/106B01D2251/404B01D2251/604B01D2257/302B01D2257/404B01D2258/0283
Inventor 梅乐
Owner ZHEJIANG FEIDA ENVIRONMENTAL SCI & TECH CO LTD
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