CN109603428A - SO is recycled from flue gas2Solvent - Google Patents

SO is recycled from flue gas2Solvent Download PDF

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Publication number
CN109603428A
CN109603428A CN201910019694.6A CN201910019694A CN109603428A CN 109603428 A CN109603428 A CN 109603428A CN 201910019694 A CN201910019694 A CN 201910019694A CN 109603428 A CN109603428 A CN 109603428A
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CN
China
Prior art keywords
absorbent
mass ratio
zhan
kinds
absorbefacient
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201910019694.6A
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Chinese (zh)
Inventor
武斌
封俊
王敏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Landian Environmental Protion Co Ltd
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Jiangsu Landian Environmental Protion Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiangsu Landian Environmental Protion Co Ltd filed Critical Jiangsu Landian Environmental Protion Co Ltd
Priority to CN201910019694.6A priority Critical patent/CN109603428A/en
Publication of CN109603428A publication Critical patent/CN109603428A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
    • B01D53/1456—Removing acid components
    • B01D53/1481—Removing sulfur dioxide or sulfur trioxide
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20—Organic absorbents
    • B01D2252/205—Other organic compounds not covered by B01D2252/00 - B01D2252/20494
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/50—Combinations of absorbents
    • B01D2252/504—Mixtures of two or more absorbents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/60—Additives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/30—Sulfur compounds
    • B01D2257/302—Sulfur oxides

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

The invention discloses one kind, and SO is recycled from industrial waste gas2Solvent, including main absorbent, absorbefacient and additive；The main absorbent is by tetramethylguanidine sulfinate ionic liquid and N, N-2- hydroxyethyl piperazine or N- hydroxyethyl piperazine composition, the mass ratio of two kinds of substances is (1-3): (0.5-1.5), and the mass ratio of the main total absorbent of absorbent Zhan is 70-90%；The absorbefacient is one or two kinds of mixing in phosphoric acid or citric acid, and the mass ratio of the total absorbent of absorbefacient Zhan is 0.5-10%；The additive includes polyethylene glycol 400, ethylenediamine tetra-acetic acid and hydroquinone, and the mass ratio of three kinds of substances is (1-4): (1-2): (0.5-1), and the mass ratio of the total absorbent of additive Zhan is 0.05-0.5%.The present invention is a kind of as recyclable sulfur dioxide gas absorbent, and absorption efficiency is high, without secondary pollution.

Description

SO is recycled from flue gas2Solvent
Technical field
The invention belongs to gas purification technique fields, and in particular to the molten of sulfur dioxide is recycled from flue gas using a kind of solution Agent.
Background technique
SO2It is a kind of gas that is colourless, having intense irritation smell, the aerial SO of disperse2To human health, ecology Environment has serious harm, is one of the Air Pollutants for causing air quality constantly to deteriorate.SO caused by artificial2It is dirty The main source of dye object has fuel combustion, industrial production, communications and transportation etc., and wherein fuel combustion accounts for 70%.Therefore, cut down and control SO caused by fuel combustion processed2Discharge be China's using energy source and environment protection field important research direction, flue gas desulfurization is Cope with SO in flue gas2The effective way of discharge.
Wet process of FGD is current most widely used method, accounts for world's installation flue gas desulfurization unit total capacity 85%, using the 80% of the total treating capacity of flue gas Zhan that this method is handled.It is practical main in Wet Flue Gas Desulfurization Technology Including the desulfurization of calcium method, sea water desulfuration etc..Wherein, the desulfuration efficiency of calcium method desulfurization is high, stronger to the adaptability of coal, but desulfurization CaSO can be generated4Precipitating reduces economic benefit；It is the simple process of seawater method desulfurization, reliable for operation, but its application is by region It influences, and certain influence can also be generated to environment.Therefore, it is necessary to the sulfur methods of developing low-cost, recycling.Wherein, The flue gas desulfurization technique such as amine process, citrate method, phosphate method etc. of renewable cyclic absorption agent, is absorbed using absorbent SO in flue gas2, heat source is reused to absorbing SO2Absorbing liquid parsed, it is 95% or more that concentration is generated after parsing SO2Gas.The SO of generation2Gas can produce finished product sulfuric acid, and absorbent may be reused.It is a kind of real efficient green Flue gas desulfurization technique.
CN1043269 discloses a kind of method using diamine salts as recyclable sulfur dioxide gas absorbent.
CN101274204 discloses a kind of solution based on organic cation and inorganic anion as recyclable two The method of sulfur oxide gas absorbent.
CN 102895848 discloses a kind of using inorganic absorbent as the side of recyclable sulfur dioxide gas absorbent Method.
CN105214445 discloses a kind of using diamine as recyclable sulfur dioxide gas absorbent method.
The disadvantages of absorptive capacity is less than normal however, the above method exists, regeneration energy consumption is higher, solvent price is high.
Summary of the invention
SO is recycled from flue gas it is an object of the invention to overcome the deficiencies of the prior art and provide a kind of2Solvent.
The technical solution adopted by the present invention are as follows: one kind recycles SO from industrial waste gas2Solvent, including main absorbent, help Absorbent and additive；
The main absorbent is by tetramethylguanidine sulfinate ionic liquid and N, N-2- hydroxyethyl piperazine or N- ethoxy piperazine Piperazine composition, the mass ratio of two kinds of substances are (1-3): (0.5-1.5), and the mass ratio of the main total absorbent of absorbent Zhan is 70- 90%；
The absorbefacient is one or two kinds of mixing, the mass ratio of the total absorbent of absorbefacient Zhan in phosphoric acid or citric acid Example is 0.5-10%；
The additive includes polyethylene glycol 400, ethylenediamine tetra-acetic acid and hydroquinone, and the mass ratio of three kinds of substances is (1-4): (1-2): (0.5-1), the mass ratio of the total absorbent of additive Zhan are 0.05-0.5%.
Resulting absorbent is configured to aqueous solution by the present invention, the SO in air-flow2By with amine salt aqueous solution of the invention It contacts and is removed.Make used absorbent regeneration simultaneously, removes all or part of SO absorbed2, then recycle To absorption step.
The utility model has the advantages that the present invention is a kind of as recyclable sulfur dioxide gas absorbent, absorption efficiency is high, without secondary Pollution.
Specific embodiment
The present invention is described further With reference to embodiment:
Embodiment 1:
One kind recycling SO from industrial waste gas2Solvent, composition are as follows:
Tetramethylguanidine sulfinate ionic liquid 45%, N- hydroxyethyl piperazine 44.95%；Phosphatase 24 % and citric acid 6%； Polyethylene glycol 400 0.02%, ethylenediamine tetra-acetic acid 0.02% and hydroquinone 0.01%, above-mentioned percentage number are quality percentage Than.
Above-mentioned absorbent is made into the aqueous solution of 25% mass percent, processing contains SO2900mg/Nm3Gas, after purification Gas in SO2For 25mg/Nm3。
Embodiment 2:
One kind recycling SO from industrial waste gas2Solvent, composition are as follows:
Tetramethylguanidine sulfinate ionic liquid 80%, N, N-2- hydroxyethyl piperazine 13.7%；Citric acid 5%；Poly- second two Alcohol 400 0.18%, ethylenediamine tetra-acetic acid 0.09% and hydroquinone 0.03%, above-mentioned percentage number are mass percent.
Above-mentioned absorbent is made into the aqueous solution of 20% mass percent, processing contains SO21200mg/Nm3Gas, purification SO in gas afterwards2For 35mg/Nm3。
Embodiment 3:
One kind recycling SO from industrial waste gas2Solvent, composition are as follows:
Tetramethylguanidine sulfinate ionic liquid 37%, N, N-2- hydroxyethyl piperazine 55.5%；Phosphoric acid 7.4%；Poly- second two Alcohol 400 0.06%, ethylenediamine tetra-acetic acid 0.03% and hydroquinone 0.01%, above-mentioned percentage number are mass percent.
Above-mentioned absorbent is made into the aqueous solution of 15% mass percent, processing contains SO22700mg/Nm3Gas, purification SO in gas afterwards2For 35mg/Nm3。
It should be pointed out that for those skilled in the art, without departing from the principle of the present invention, Several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.In the present embodiment not The available prior art of specific each component part is realized.

Claims (1)

1. recycling SO from industrial waste gas2Solvent, it is characterised in that: including main absorbent, absorbefacient and additive；
The main absorbent is by tetramethylguanidine sulfinate ionic liquid and N, N-2- hydroxyethyl piperazine or N- hydroxyethyl piperazine group At the mass ratio of two kinds of substances is (1-3): (0.5-1.5), and the mass ratio of the main total absorbent of absorbent Zhan is 70-90%；
The absorbefacient is that one or two kinds of mixing, the mass ratio of the total absorbent of absorbefacient Zhan are in phosphoric acid or citric acid 0.5-10%；
The additive includes polyethylene glycol 400, ethylenediamine tetra-acetic acid and hydroquinone, and the mass ratio of three kinds of substances is (1- 4): (1-2): (0.5-1), the mass ratio of the total absorbent of additive Zhan are 0.05-0.5%.
CN201910019694.6A 2019-01-09 2019-01-09 SO is recycled from flue gas2Solvent Pending CN109603428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910019694.6A CN109603428A (en) 2019-01-09 2019-01-09 SO is recycled from flue gas2Solvent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910019694.6A CN109603428A (en) 2019-01-09 2019-01-09 SO is recycled from flue gas2Solvent

Publications (1)

Publication Number Publication Date
CN109603428A true CN109603428A (en) 2019-04-12

Family

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Country Status (1)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111589271A (en) * 2020-06-01 2020-08-28 江苏蓝电环保股份有限公司 SO (sulfur oxide) recovery from flue gas2Of (2) a solvent
CN112316669A (en) * 2020-09-25 2021-02-05 合肥工业大学 Organic amine desulfurizer, preparation method and application thereof
CN113861081A (en) * 2021-10-25 2021-12-31 中国药科大学 Guanidino functionalized ionic liquid and preparation method and application thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102657999A (en) * 2012-05-31 2012-09-12 北京化工大学 Poly (tetramethylguandium acrylate) aqueous solution desulfurization agent and preparation method thereof
CN103463936A (en) * 2013-09-07 2013-12-25 中北大学 Device and method for removing sulfur dioxide contained in waste gas
CN103908871A (en) * 2013-10-16 2014-07-09 泰兴电除尘设备厂有限公司 Solvent for absorbing sulfur dioxide in smoke gas flow
CN105617818A (en) * 2015-10-12 2016-06-01 江苏蓝电环保股份有限公司 Solvent for recovering SO2 from industrial waste gas
CN107837650A (en) * 2017-12-11 2018-03-27 江苏蓝电环保股份有限公司 One kind reclaims SO from flue gas2Solvent

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102657999A (en) * 2012-05-31 2012-09-12 北京化工大学 Poly (tetramethylguandium acrylate) aqueous solution desulfurization agent and preparation method thereof
CN103463936A (en) * 2013-09-07 2013-12-25 中北大学 Device and method for removing sulfur dioxide contained in waste gas
CN103908871A (en) * 2013-10-16 2014-07-09 泰兴电除尘设备厂有限公司 Solvent for absorbing sulfur dioxide in smoke gas flow
CN105617818A (en) * 2015-10-12 2016-06-01 江苏蓝电环保股份有限公司 Solvent for recovering SO2 from industrial waste gas
CN107837650A (en) * 2017-12-11 2018-03-27 江苏蓝电环保股份有限公司 One kind reclaims SO from flue gas2Solvent

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111589271A (en) * 2020-06-01 2020-08-28 江苏蓝电环保股份有限公司 SO (sulfur oxide) recovery from flue gas2Of (2) a solvent
CN112316669A (en) * 2020-09-25 2021-02-05 合肥工业大学 Organic amine desulfurizer, preparation method and application thereof
CN112316669B (en) * 2020-09-25 2023-06-23 合肥工业大学 Organic amine desulfurizing agent and preparation method and application thereof
CN113861081A (en) * 2021-10-25 2021-12-31 中国药科大学 Guanidino functionalized ionic liquid and preparation method and application thereof
CN113861081B (en) * 2021-10-25 2023-12-19 中国药科大学 Guanidine-functionalized ionic liquid and preparation method and application thereof

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Application publication date: 20190412

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