Smoke desulphurization agent and smoke desulphurization method

A technology of desulfurization agent and flue gas, which is applied in the field of flue gas desulfurization, can solve the problems of low desulfurization rate, pollute the environment, decrease the absorption capacity, etc., and achieve the effect of high desulfurization rate

Active Publication Date: 2010-06-09
PANGANG GROUP VANADIUM TITANIUM & RESOURCES +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Acid rain formed by sulfur dioxide and other acidic gases has brought serious damage to industrial and agricultural production and seriously polluted the environment
However, the above two desulfurizers are only suitable for flue gas that does not contain oxygen or has a very low oxygen content, because the above patents all contain hydroxyethyldiamine, so there is a phenomenon of degradation in an oxygen atmosphere
[0006] CN 101274204A uses organic cations and inorganic anions as main absorbents, and alkanolamines with sterically hindered amines as activators, which suppresses the above-mentioned degradation phenomenon to a certain extent. However, the desulfurization solution has slow absorption speed and desulfurization Disadvantages of low desorption rate, low desorption rate, high desorption energy consumption and significant decrease in absorption capacity during recycling

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] This example is used to illustrate the flue gas desulfurization agent and the flue gas desulfurization method provided by the present invention.

[0033] (1) The composition of the simulated flue gas is (volume): CO 2 : 15.4%; O 2 : 9.7%; H 2 O: 10.2%; SO 2 : 1%, CO: 1.05%; N x O: 0.1%, H 2 S: 120mg / Nm 3 , the organic sulfide (COS) content is 70mg / Nm 3 , and the rest is nitrogen.

[0034] (2) Preparation of flue gas desulfurizer

[0035] 80 grams of N-hydroxyethylpiperazine, 30 grams of N, N-diethylpiperazine, 40 grams of diazabicyclo, 50 grams of piperazine, 3 grams of 4-tert-butylcatechol, 4 grams of antimony tartrate Potassium and 5 grams of sodium lauryl sulfate are added to 500 milliliters of water, stir well, adjust the acidity of solution with the phosphoric acid solution of 0.1 mol / liter, and quantify to 1000 grams with distilled water, control the pH value of above-mentioned solution to be 7, thus obtain Flue gas desulfurizer.

[0036] (3) Desulfuriza...

Embodiment 2

[0046] This example is used to illustrate the flue gas desulfurization agent and the flue gas desulfurization method provided by the present invention.

[0047] Prepare the flue gas desulfurizer according to the method of Example 1, perform flue gas desulfurization on the simulated flue gas in Example 1 and desorb the rich liquid after flue gas desulfurization, the difference is that the flue gas desulfurizer is not strengthened Oxidation, that is, directly using the prepared flue gas desulfurization agent to perform flue gas desulfurization on the simulated flue gas. After the flue gas desulfurization, use the enhanced flue gas analyzer (Germany, model: Vario Plus) to detect the content of sulfur dioxide in the flue gas before and after desulfurization, and adopt the iodometric method to measure the amount of sulfur dioxide in the rich liquid ( the absorption capacity). After the desorption, the absorption capacity, desorption amount and desorption rate were measured and cal...

Embodiment 3

[0049] This example is used to illustrate the flue gas desulfurization agent and the flue gas desulfurization method provided by the present invention.

[0050] (1) Composition (volume) of simulated mixed gas: CO 2 : 15.8%; O 2 : 10.4%; H 2 O: 7.8%; SO 2 : 6%, the rest is nitrogen.

[0051] (2) Preparation of flue gas desulfurizer

[0052] 300 grams of N-hydroxyethylpiperazine, 40 grams of piperazine, 10 grams of diazabicyclo, 2 grams of sodium metavanadate, 3 grams of vanadium pentoxide, 20 grams of 2,6-di-tert-butyl p- Add benzocresol to 500 milliliters of water, then add 8 grams of sodium dodecylbenzenesulfonate, stir evenly, adjust the acidity of the solution with 0.5 mol / liter of phosphoric acid solution, and quantify it to 1000 grams with distilled water to control the pH of the above solution The value is 7, thus obtaining the flue gas desulfurizer.

[0053] Steps (3), (4), and (5) carry out desulfurization agent enhanced oxidation, flue gas desulfurization, desor...

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PUM

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Abstract

The invention provides a smoke desulphurization agent. The desulphurization agent is aqueous solution containing a main absorption component, an activating agent, an anti-oxidation component and acid, wherein the main absorption component is one or more of alkyl piperazine, hydroxyalkyl piperazine and hydroxyalkyl piperazine ketone; the activating agent comprises piperazine and diazabicyclo; and the anti-oxidation component is at least one of 4-tert-butyl catechol, 2,6-di-tert-butyl-p-phenylcresol, acetone oxime and N,N-bi (2-ethoxy) glycine. The smoke desulphurization agent provided by the invention can remove and reclaim sulfur dioxide in the smoke, and has higher desulphurization rate; moreover, even if the smoke desulphurization agent is strongly oxidized and then is recycled, the absorption capacity for the sulfur dioxide is still stable; and in addition, the rich liquor formed by desulphurization after adopting the desulphurization agent has better desorption performance such as high desorption rate.

Description

technical field [0001] The invention relates to a flue gas desulfurizing agent and a method for using the flue gas desulfurizing agent to carry out flue gas desulfurization. Background technique [0002] The acid rain formed by sulfur dioxide and other acid gases has brought serious damage to industrial and agricultural production and seriously polluted the environment. With the gradual popularization of scientific development concepts such as "circular economy, clean production, and harmonious society", the country's increasing emphasis on air pollution caused by sulfur dioxide, and the formulation and implementation of relevant environmental protection laws and regulations, the control of flue gas pollution containing sulfur dioxide work is imperative. [0003] The development of flue gas desulfurization technology has a history of 100 years. There have been more than 140 kinds of process technologies, of which more than 10 have been applied in industry. The basic princip...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14B01D53/50
Inventor 邱正秋黎建明张金阳孙梦君王建山彭良虎叶运高
Owner PANGANG GROUP VANADIUM TITANIUM & RESOURCES
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