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Desulfurating agent and method for purifying flue gas by using desulfurating agent

A desulfurization agent and flue gas technology, applied in the field of flue gas purification treatment, can solve the problems of large construction investment, high operation and maintenance costs, and complicated operation of desulfurization equipment, and achieve easy automatic operation, small equipment footprint, and economical Good effect

Inactive Publication Date: 2016-06-22
孙若浩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the deficiencies of the existing desulfurization technology, and provides an aerosol-type composite desulfurizer for gas-phase desulfurization of flue gas, so as to realize the purification and removal of SOx from combustion flue gas, so as to overcome the large investment in the construction of desulfurization devices existing in the existing desulfurization technology and the slow operation. Problems such as high maintenance costs, complicated operation, and high labor intensity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A desulfurizer for gas-phase desulfurization of flue gas, the composition and the method of use include the following steps:

[0034] Inject 30.2kg of carbohydrazide, 500.8kg of melamine cyanurate, and 69kg of triethanolamine salicylate, a compound desulfurizer, into the reaction zone. The desulfurizer and the SO in the flue gas 2 The molar ratio is 0.9:1, and the injection pressure is 35kpa;

[0035] Under the condition that the temperature of the reaction zone is 750°C, after 1.5s of reaction, it is ready;

[0036] SO in flue gas before and after treatment was detected by flue gas analyzer 2 Concentration, calculated to give SO 2 The removal rate reaches 96.0%.

Embodiment 2

[0038] The desulfurizer for gas-phase desulfurization of flue gas and its usage method as described in Example 1, the difference is that: the temperature in the reaction zone is 930°C, and the reaction time is 2s;

[0039] SO in flue gas before and after treatment was detected by flue gas analyzer 2 Concentration, calculated to give SO 2 The removal rate reaches 98.0%.

Embodiment 3

[0041] A desulfurizer for gas-phase desulfurization of flue gas, the composition and the method of use include the following steps:

[0042] A mixture of 40kg of carbohydrazide and 260kg of triethanolamine salicylate, that is, a composite desulfurizing agent, is injected into the reaction zone. The desulfurizing agent and the SO in the flue gas 2 The molar ratio is 0.9:1, and the injection pressure is 25kpa;

[0043] Under the condition that the temperature of the reaction zone is 750°C, after 1.5s of reaction, it is ready;

[0044] SO in flue gas before and after treatment was detected by flue gas analyzer 2 Concentration, calculated to give SO 2 The removal rate reaches 96.8%.

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Abstract

The invention provides a desulfurating agent used for the gas-phase desulfuration of a flue gas. According to a technique, the purpose of removing SOx in the flue gas is achieved by generating gasoloid from a solid powdery desulfurating agent through a gas dispersing device, injecting the gasoloid into a desulfuration reaction region, mix the gasoloid with to-be-treated flue gas and subjecting an obtained mixture to a reaction in a gas-phase condition; the desulfuration efficiency reaches 95 percent or more.

Description

technical field [0001] The invention relates to a desulfurizer for gas-phase desulfurization of flue gas, in particular to a high-efficiency aerosol-type composite desulfurizer for gas-phase purification and desulfurization of flue gas, belonging to the technical field of flue gas purification treatment. Background technique [0002] With the development of our country's economy, the environmental pollution caused by a large amount of energy consumption is becoming more and more serious. Harmful substances such as soot, sulfur dioxide, and nitrogen oxides contained in the flue gas produced by combustion have caused serious air pollution. [0003] Flue gas desulfurization is currently the most effective and widely used flue gas desulfurization technology for controlling the concentration and total amount of sulfur dioxide emissions in the atmosphere. Flue gas desulfurization refers to the use of chemical, physical and biological methods to remove SO in flue gas 2 be fixed a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/76B01D53/50
CPCB01D53/76B01D53/50B01D2251/80B01D2257/302B01D2258/0283
Inventor 孙若浩李守顺孙刚王兵李蔚
Owner 孙若浩