CN108622964A - It is a kind of with hydrogen peroxide solution be excite object plasma evaporation technique - Google Patents

It is a kind of with hydrogen peroxide solution be excite object plasma evaporation technique Download PDF

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Publication number
CN108622964A
CN108622964A CN201810435575.4A CN201810435575A CN108622964A CN 108622964 A CN108622964 A CN 108622964A CN 201810435575 A CN201810435575 A CN 201810435575A CN 108622964 A CN108622964 A CN 108622964A
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CN
China
Prior art keywords
plasma
hydrogen peroxide
peroxide solution
steam
evaporation technique
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
CN201810435575.4A
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Chinese (zh)
Inventor
殷衡
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Jiangsu Wichi Environmental Protection Technology Co Ltd
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Jiangsu Wichi Environmental Protection Technology Co Ltd
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Publication date
Application filed by Jiangsu Wichi Environmental Protection Technology Co Ltd filed Critical Jiangsu Wichi Environmental Protection Technology Co Ltd
Priority to CN201810435575.4A priority Critical patent/CN108622964A/en
Publication of CN108622964A publication Critical patent/CN108622964A/en
Pending legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048—Purification of waste water by evaporation
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/38—Removing components of undefined structure
    • B01D53/44—Organic components
    • 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
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/76—Gas phase processes, e.g. by using aerosols
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/30—Treatment of water, waste water, or sewage by irradiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2257/00—Components to be removed
    • B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
    • B01D2257/708—Volatile organic compounds V.O.C.'s

Abstract

It is a kind of with hydrogen peroxide solution be excite object plasma evaporation technique, fields be chemical engineering in evaporative crystallization field.Primarily to solving the shortcoming that existing evaporation technology is difficult to remove volatile organic contaminant in waste water, the main points to solve the above problems are the technique：It is excitation object with hydrogen peroxide solution, the plasma of 4000~4200 DEG C of temperature is generated with the mode that 270~280A DC currents discharge；Above-mentioned plasma is sprayed by vaporization chamber bottom, and is directly contacted with liquid and carried out heat and mass；Vaporization chamber is discharged in liquid heat absorption evaporation, the steam of generation together with plasma；Entrained a large amount of elemental oxygens, ultra-oxygen anion free radical, hydroxyl radical free radical and high energy electron have extremely strong oxidability in plasma, volatile organic contaminant in steam can be decomposed into carbon dioxide and water, improve removal rate of the evaporation technology to Organic Pollutants in Wastewater.

Description

It is a kind of with hydrogen peroxide solution be excite object plasma evaporation technique
Technical field
The present invention relates to the evaporative crystallization field in chemical engineering, it is specially a kind of with hydrogen peroxide solution be excitation object Plasma evaporation technique.
Background technology
With the rapid development of chemical industry, the type and quantity of waste water rapidly increase, and produce more and more superelevation Concentration organic wastewater seriously threatens the health and safety of the mankind.For ultra-high concentration organic wastewater, such as organic chemical synthesis work Industry waste water and agricultural chemicals waste water etc., conventional oxidizing process and biochemical process have been difficult to be applicable in.
Evaporative crystallization method has been increasingly being applied in the processing of ultra-high concentration organic wastewater, with obvious effects. However, for the waste water containing volatile organic matter, existing evaporation technology is often difficult to directly handle waste water up to standard, still needs to Want subsequent processing.
Therefore urgent need exploitation one kind is simple and efficient, the wider array of evaporation technology of the scope of application.
Invention content
The problem of the purpose of the present invention is to solve existing evaporation technologies and deficiency, provide a kind of simple height Effect, the wider array of evaporation technology of the scope of application.
Technical scheme is as follows：It is excitation object with hydrogen peroxide solution, is discharged with 270~280A DC currents Mode generates the plasma of 4000~4200 DEG C of temperature；Above-mentioned plasma is sprayed by vaporization chamber bottom, and directly and liquid Contact carries out heat and mass；Vaporization chamber is discharged in liquid heat absorption evaporation, the steam of generation together with plasma；Institute in plasma A large amount of elemental oxygens, ultra-oxygen anion free radical, hydroxyl radical free radical and the high energy electron carried has extremely strong oxidability, can Volatile organic contaminant in steam is decomposed into carbon dioxide and water, improves evaporation technology to Organic Pollutants in Wastewater Removal rate；Steam eventually passes through condensation and obtains evaporator water outlet.
Wherein：Using hydrogen peroxide solution as the excitation object of plasma.
Wherein：Hydrogen peroxide is specially H2O2And 2Na2CO3·3H2O2。
Wherein：Due to the difference of waste water quality, the amount of hydrogen peroxide used is determined by lab scale.
Wherein：Plasma is generated by the way of the electric discharge of 270~280A DC currents.
Wherein：The plasma temperature generated is at 4000~4200 DEG C.
Wherein：Entrained a large amount of elemental oxygens, ultra-oxygen anion free radical, hydroxyl radical free radical and high energy electricity in plasma Son has extremely strong oxidability, the volatile organic contaminant in the steam that can degrade.
Plasma generated in the method for the present invention, itself has high temperature, can provide heat for evaporation technology Source；A large amount of elemental oxygens, ultra-oxygen anion free radical, hydroxyl radical free radical and high energy electron are carried in plasma simultaneously, due to It is elemental oxygen, ultra-oxygen anion free radical, a large amount of entrained by superpower oxidability and high energy electron possessed by hydroxyl radical free radical Energy leads to the volatile organic contaminant in its steam that can degrade to non-selectivity.
Specific implementation mode
To facilitate the understanding of the present invention, will be with " Shandong Yi Hua Chemical Co., Ltd.s thioacetic acid isooctyl waste water " hereafter Embodiment more comprehensively, meticulously describes present invention work, but not as a limitation of the invention.
Embodiment 1：A concentration of 0.2% hydrogen peroxide solution is provided in a manner of atomization；It is excited with the DC current of 270A Above-mentioned hydrogen peroxide solution generates 4000~4100 DEG C of plasmas of temperature；Above-mentioned plasma is sprayed by vaporization chamber bottom, and straight It connects to contact with liquid and carries out heat and mass；Vaporization chamber is discharged in liquid heat absorption evaporation, the steam of generation together with plasma；Deng from Entrained a large amount of elemental oxygens, ultra-oxygen anion free radical, hydroxyl radical free radical and high energy electron and steam carry out abundant in daughter Contact, and volatile organic contaminant therein of directly degrading；Take steam condensate to carry out COD detections to it, and with existing steaming It sends out technique and carries out longitudinal comparison.(remarks：Existing evaporation technology is by taking MVR evaporators as an example.)
Testing result：The existing evaporation technology water outlet COD=2200mg/L removal rates of raw water COD=17600mg/L= 87.5%
This evaporation technology of raw water COD=17600mg/L is discharged COD=31mg/L removal rate=99.82%
From testing result：This evaporation technology improves 12.32% to the more existing evaporation technology of COD removal rates；And this Evaporation technology water outlet directly meets《Urban wastewater treatment firm pollutant emission standard》Level-one emission standard A.
Embodiment 2：A concentration of 0.3% hydrogen peroxide solution is provided in a manner of atomization；It is excited with the DC current of 280A Above-mentioned hydrogen peroxide solution generates 4100~4200 DEG C of plasmas of temperature；Above-mentioned plasma is sprayed by vaporization chamber bottom, and straight It connects to contact with liquid and carries out heat and mass；Vaporization chamber is discharged in liquid heat absorption evaporation, the steam of generation together with plasma；Deng from Entrained a large amount of elemental oxygens, ultra-oxygen anion free radical, hydroxyl radical free radical and high energy electron and steam carry out abundant in daughter Contact, and volatile organic contaminant therein of directly degrading；Take steam condensate to carry out COD detections to it, and with existing steaming It sends out technique and carries out longitudinal comparison.(remarks：Existing evaporation technology is by taking MVR evaporators as an example.)
Testing result：The existing evaporation technology water outlet COD=2200mg/L removal rates of raw water COD=17600mg/L= 87.5%
This evaporation technology of raw water COD=17600mg/L is discharged COD=14mg/L removal rate=99.92%
From testing result：This evaporation technology improves 12.42% to the more existing evaporation technology of COD removal rates；And this Evaporation technology water outlet directly meets《Urban wastewater treatment firm pollutant emission standard》Level-one emission standard A.

Claims (7)

1. it is the plasma evaporation technique for exciting object that the present invention provides a kind of with hydrogen peroxide solution, it is characterised in that：With Hydrogen peroxide solution is excitation object, with the mode that 270~280A DC currents discharge generate 4000~4200 DEG C of temperature it is equal from Daughter；Above-mentioned plasma is sprayed by vaporization chamber bottom, and is directly contacted with liquid and carried out heat and mass；Liquid heat absorption evaporation, Vaporization chamber is discharged in the steam of generation together with plasma；A large amount of elemental oxygens, superoxide anion entrained by plasma are certainly There is extremely strong oxidability by base, hydroxyl radical free radical and high energy electron, it can be by the volatile organic contaminant in steam point Solution is carbon dioxide and water, improves removal rate of the evaporation technology to Organic Pollutants in Wastewater；Steam, which eventually passes through, to be condensed It is discharged to evaporator.
2. according to claim 1 a kind of with the plasma evaporation technique that hydrogen peroxide solution is excitation object, feature It is：Using hydrogen peroxide solution as the excitation object of plasma.
3. according to claim 1 a kind of with the plasma evaporation technique that hydrogen peroxide solution is excitation object, feature It is：Hydrogen peroxide is specially H2O2And 2Na2CO3·3H2O2。
4. according to claim 1 a kind of with the plasma evaporation technique that hydrogen peroxide solution is excitation object, feature It is：Due to the difference of waste water quality, the amount of hydrogen peroxide used is determined by lab scale.
5. according to claim 1 a kind of with the plasma evaporation technique that hydrogen peroxide solution is excitation object, feature It is：Plasma is generated by the way of the electric discharge of 270~280A DC currents.
6. according to claim 1 a kind of with the plasma evaporation technique that hydrogen peroxide solution is excitation object, feature It is：The plasma temperature generated is at 4000~4200 DEG C.
7. according to claim 1 a kind of with the plasma evaporation technique that hydrogen peroxide solution is excitation object, feature It is：Entrained a large amount of elemental oxygens, ultra-oxygen anion free radical, hydroxyl radical free radical and high energy electron have pole in plasma Strong oxidability, the volatile organic contaminant in the steam that can degrade.
CN201810435575.4A 2018-05-02 2018-05-02 It is a kind of with hydrogen peroxide solution be excite object plasma evaporation technique Pending CN108622964A (en)

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CN201810435575.4A CN108622964A (en) 2018-05-02 2018-05-02 It is a kind of with hydrogen peroxide solution be excite object plasma evaporation technique

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CN108622964A true CN108622964A (en) 2018-10-09

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102951720A (en) * 2011-08-17 2013-03-06 中国石油化工股份有限公司 Wastewater processing method
CN103896361A (en) * 2014-03-22 2014-07-02 中国科学院等离子体物理研究所 Device and method for treating organic waste water by water plasma torch
CN106145501A (en) * 2015-03-23 2016-11-23 昆山未来环保科技有限公司 The low-temperature evaporation processing method of industrial wastes and processing means thereof
CN107098530A (en) * 2017-05-02 2017-08-29 山东博润工业技术股份有限公司 A kind of positive osmosis treatment system of chloro alcali wastewater and handling process

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102951720A (en) * 2011-08-17 2013-03-06 中国石油化工股份有限公司 Wastewater processing method
CN103896361A (en) * 2014-03-22 2014-07-02 中国科学院等离子体物理研究所 Device and method for treating organic waste water by water plasma torch
CN106145501A (en) * 2015-03-23 2016-11-23 昆山未来环保科技有限公司 The low-temperature evaporation processing method of industrial wastes and processing means thereof
CN107098530A (en) * 2017-05-02 2017-08-29 山东博润工业技术股份有限公司 A kind of positive osmosis treatment system of chloro alcali wastewater and handling process

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Application publication date: 20181009