A treatment method and treatment device for sulfur-containing flue gas

A treatment method and flue gas technology, applied in separation methods, sulfur preparation/purification, chemical instruments and methods, etc., can solve the problems of long treatment process, high treatment energy consumption, complicated treatment process, etc. High carbon fixation efficiency and good removal effect

Active Publication Date: 2021-11-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still shortcomings such as long processing flow, complicated processing process, and high energy consumption.

Method used

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  • A treatment method and treatment device for sulfur-containing flue gas
  • A treatment method and treatment device for sulfur-containing flue gas
  • A treatment method and treatment device for sulfur-containing flue gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] The waste alkali solution produced by a corporate ethylene device, wherein the COD is 58000 mg / L, the sodium sulfide concentration is 2.9 wt% (S 2- : 12200 mg / L), the sodium carbonate concentration was 2.0 wt% (20500 mg / L), and the sodium hydroxide concentration was 1.6 wt%.

[0051] The main composition of the flue gas generated by a company is: CO 2 The content is 14V%, the NOx content is 0.06V% (90% of NO), SO 2 The content is 0.04 V%.

[0052] The flue gas is introduced into the desulfurization absorption tower, and the vinyl scrapper liquid is used as the absorbent, and the pH of the absorbent liquid is 5-6, and the portion of the desulfurization absorption liquid is absorbed outside the absorbent liquid. Start replenishing the waste alkali solution, when the pH reaches 6, stopping the completion to obtain desulfurized smoke. The draft desulfurization absorbing solution is mainly based on sodium sulfite, adding cooked lime to make the desulfurization waste liquid...

Embodiment 2

[0057] The waste alkali produced by a corporate ethylene device, wherein the COD is 33000 mg / L, the sodium sulfide concentration is 2.1% by weight (S 2- : 8831 mg / L), the sodium carbonate concentration was 1.1 wt% (11275 mg / L), and the sodium hydroxide concentration was 1.2% by weight.

[0058] The main composition of the flue gas generated by a company is: CO 2 The content is 10 V%, the NOx content is 0.04V%, so 2 The content is 0.03 V%.

[0059] The flue gas is introduced into the desulfurization absorption tower, and the vinyl discardium liquid is used as the absorbent, and the pH of the absorbent liquid is 5.5-6.5, and the pH is less than 5.5, and some desulfurization absorption liquid is outside. Start replenishing the ethylene waste alkali solution, when the pH reaches 6.5, stopping the completion to obtain desulfurization. The draft desulfurization absorbing solution is mainly based on sodium sulfite, adding cooked lime to make the desulfurization waste liquid to rege...

Embodiment 3

[0064] A certain enterprise propane dehydrogenated olefin produced by the waste alkali solution, wherein sodium sodium sulfide is 6.83 wt%, sodium hydrosulfide is 4.8% by weight, COD is 117300 mg / L, pH of 13.5.

[0065] The main composition of the flue gas generated by a company is: CO 2 The content is 20 V%, the NOx content is 0.05V%, so 2 The content was 0.02 V%.

[0066] The flue gas is introduced into the desulfurization absorption tower, and the propylene waste base liquid is used as the absorbent, and the pH of the absorbent liquid is 5-6, when the pH is lower than 5, the portion of the desulfurization absorption liquid is outside. Start replenishing the propylene waste alkali solution, when the pH reaches 6, stopping the completion, resulting in desulfurization. The draft desulfurization absorbing solution is mainly based on sodium sulfite, adding cooked lime to make the desulfurization waste liquid to regenerate, to obtain CASO 3 Presets, calcined by high temperature, ob...

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Abstract

The invention relates to a treatment method and device for sulfur-containing flue gas. The flue gas is passed into a desulfurization reactor, and olefin waste lye is used as an absorbent to obtain desulfurization flue gas and desulfurization waste liquid; causticizing the desulfurization waste liquid Regeneration, to obtain a precipitate, high-temperature calcination, the obtained high-concentration SO 2 React with desulfurization flue gas to prepare sulfur; the generated gas is passed into the photobioreactor for microalgae cultivation, and exhaust gas is collected; the culture system is separated from solid and liquid, and microalgae cells and filtrate are harvested respectively; peroxide is added to the filtrate Sodium, and the exhaust gas is passed into the filtrate for reaction to obtain purified gas; after oxidation treatment, the filtrate is denitrified. The present invention couples olefin waste lye treatment with microalgae cultivation to treat SO-containing 2 , CO 2 , NO X The flue gas achieves efficient treatment of flue gas, and has the advantages of good removal effect, low treatment cost, economical and environmental protection.

Description

Technical field [0001] The present invention belongs to the field of flue gas treatment technology, and particularly relates to a method for processing a sulfur-containing flue gas treatment apparatus. Background technique [0002] Nitrogen oxides (NOx) with a N 2 O, NO, NO 2 , N 2 O 3 , N 2 O 4 And N 2 O 5 And other forms, and can cause a variety of hazards, such as can produce photochemical smog in the atmosphere of volatile organic compounds (VOC), so that the eyes, throat causing intense irritation, and cause headaches and respiratory diseases, severe resulting in death. NOx emissions in our country for many years to more than 20 million tons, although since 2012 has showed a continuous decreasing trend, but the pollution situation is still grim. Since 2003, my country's SO 2 Emissions has been high in 2014 of SO 2 The total discharge of 19.744 million tons. September 12, 2014, the National Development and Reform Commission, Ministry of Environmental Protection and the Nation...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/86B01D53/84B01D53/62B01D53/56B01D53/52B01D53/75C01B17/04
CPCY02A50/20
Inventor 赵磊师文静刘忠生
Owner CHINA PETROLEUM & CHEM CORP
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