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WO2018203158A1 - Système de production de solution aqueuse de dioxyde de chlore - Google Patents

Système de production de solution aqueuse de dioxyde de chlore Download PDF

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Publication number
WO2018203158A1
WO2018203158A1 PCT/IB2018/052482 IB2018052482W WO2018203158A1 WO 2018203158 A1 WO2018203158 A1 WO 2018203158A1 IB 2018052482 W IB2018052482 W IB 2018052482W WO 2018203158 A1 WO2018203158 A1 WO 2018203158A1
Authority
WO
WIPO (PCT)
Prior art keywords
chlorine dioxide
aqueous solution
unit
dioxide aqueous
electrolysis
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.)
Ceased
Application number
PCT/IB2018/052482
Other languages
English (en)
Inventor
Bin-Syuan Huang
Hao-Chang Yin
Jui-Wen MA
Shan-Shue Wang
Ming-Long Cheng
Chu-Wei Hsu
Chun-Wei Peng
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.)
UNIQUE BIOTECH CO Ltd
Original Assignee
UNIQUE BIOTECH 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=64016640&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO2018203158(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by UNIQUE BIOTECH CO Ltd filed Critical UNIQUE BIOTECH CO Ltd
Publication of WO2018203158A1 publication Critical patent/WO2018203158A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/24—Halogens or compounds thereof
    • C25B1/26—Chlorine; Compounds thereof
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B11/00—Oxides or oxyacids of halogens; Salts thereof
    • C01B11/02—Oxides of chlorine
    • C01B11/022—Chlorine dioxide (ClO2)
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/02—Process control or regulation
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B15/00—Operating or servicing cells
    • C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
    • C25B9/70—Assemblies comprising two or more cells

Definitions

  • the disclosure relates to a chemical production system, and more particularly to a chlorine dioxide aqueous solution production system.
  • Chlorine dioxide aqueous solution is used for bleaching of woodpulp and the disinfection of municipal drinking water. Chlorine dioxide, when dissolved in water, is able to kill off bacteria and virus at a concentration of 2 to 10 ppm . As chlorine dioxide is less corrosive than chlorine, it is commonly used in many industrial water treatment applications as a bi ocide .
  • the concentration of the chlorine dioxide aqueous solution from a production plant is usually higher than average, in order to ensure that it meets minimum quality standard.
  • human inspection with spectrophotometry is required to conduct quality control effectively, which is not efficient for automated mass production process.
  • the chlorine dioxide aqueous solution production system includes a chlorine dioxide generating device, and a mixing and measuring device.
  • the chlorine dioxide generating device includes an electrolysis unit that is adapted for generating gaseous chlorine dioxide by electrolysis.
  • the mixing and measuring device includes a mixing unit, a measuring unit, and a control unit.
  • the mixing unit has a chlorine dioxide aqueous solution mixer that is connected to the electrolysis unit, a transporting pipe that is connected to the chlorine dioxide aqueous solution mixer, a container set and a control valve set.
  • the container set is connected to the transporting pipe such that water flowing from the container set into the chlorine dioxide aqueous solution mixer and the gaseous chlorine dioxide advanced from the electrolysis unit are mixed together to form chlorine dioxide aqueous solution which circulates through the transporting pipe and the container set.
  • the control valve set is mounted on one of the container set and the transporting pipe, and is operable for permitting and blocking the circulation of water and the chlorine dioxide aqueous solution.
  • the measuring unit is mounted on the transporting pipe of the mixing unit for measuring redox potential of the chlorine dioxide aqueous solution passing therethrough.
  • the control unit is electronically connected to the control valve set of the mixing unit and the measuring unit, and compares the measured redox potential value from the measuring unit with a predetermined value for actuating and terminating operation of the control valve se
  • FIG. 1 is a partly schematic side view of a chlorine dioxide generating device of an embodiment of a chlorine dioxide aqueous solution production system according to the disclosure
  • FIG. 2 is a partly schematic side view of a mixing and measuring device of the embodiment.
  • FIG. 3 is a graph of relationship between redox potential and concentration of chlorine dioxide aqueous solution.
  • an embodiment of a chlorine dioxide aqueous solution production system has a chlorine dioxide generating device 1 andamixingand measuring device 2.
  • the chlorine dioxide aqueous solution production system is adapted for producing chlorine dioxide aqueous solution from an electrolytic solution and water.
  • the chlorine dioxide generating device 1 includes an electrolysis unit 11.
  • the chlorine dioxide generating device 1 also includes a feeding unit 12, a cleaning unit 13, and a thermostat unit 14, each of which is connected to the electrolysis unit 11.
  • the electrolysis unit 11 includes an electrolytic cell 111 adapted for performing electrolysis of the electrolytic solution, a gas transporting pipe 112 that interconnects the electrolytic cell 111 with the mixing and measuring device 2, and a waste exhaust pipe 113 that is connected to the electrolytic cell 111. After gaseous chlorine dioxide is generated from the electrolytic solution in the electrolytic cell 111, it is collectedby the gas transportingpipe 112 for further uses in the mixing and measuring device 2. Byproducts of the electrolysis, primarily liquid substances, are removed from the electrolytic cell 111 through the waste exhaust pipe 113.
  • the electrolytic cell 111 mentioned in this disclosure is a known technology and will not be discussed in further detail.
  • the feeding unit 12 is operable for feeding electrolytic solution to the electrolysis unit 11.
  • the feeding unit 12 includes a raw material tank 121 that dissolves raw salt with solvent to form the electrolytic solution, and an electrolytic solution tank 122 that interconnects the raw material tank 121 and the electrolytic cell 111 through connecting pipes.
  • the abovement ioned raw salt may be sodium chloride or sodium chlorite
  • the solvent may be water
  • the electrolytic solution may consequently be aqueous solution of sodium chloride or sodium chlorite.
  • the electrolytic solution from the raw material tank 121 is transported to and stored in the electrolytic solution tank 122.
  • the electrolytic solution is further fed to the electrolytic cell 111 to undergo electrolysis.
  • the cleaning unit 13 is operable for water-flushing the electrolysis unit 11 when it is not in use.
  • the cleaning unit 13 is a pipe that transports tap water into the electrolytic cell 111 for water- flushing . After cleaning, the tap water is also removed from the electrolytic cell 111 through the waste exhaust pipe 113.
  • the thermostat unit 14 is operable for controlling temperature of the electrolysis unit 11 through the process of heat exchange utilizing refrigerant.
  • the thermostat unit 14 includes a cooler 141 that cools temperature of refrigerant, and a cooling pipe 142 that allows the refrigerant to circulate between the electrolytic cell 111 and the cooling 141.
  • the process ofheat exchange utilizing refrigerant as aworking fluid is a known mechanical process and will not be discussed in details .
  • the mixing and measuring device 2 includes a mixing unit 21 that mixes the gaseous chlorine dioxide advanced from the electrolysis unit 11 with water to form chlorine dioxide aqueous solution, a measuring unit 22 that is mounted on the mixing unit 21, and a control unit 23 that is electronically connected to the measuring unit
  • the mixing unit 21 has a container set 210 that includes four containers 211, a transporting pipe 212 that is connected to and surrounds the container set 210 and that aligns the containers 211 in parallel, a water inlet 213 that has a plurality of branch pipes connected respectively to the containers 211, a chlorine dioxide aqueous solution mixer 214 that is mounted on the transporting pipe 212 and that is connected to gas transporting pipe 112 of the electrolysis unit 11, and a control valve set 215 that is mounted on the transporting pipe 212.
  • Each of the containers 211 stores the chlorine dioxide aqueous solution of varying concentration, ranging from zero, containing only the water from the water inlet
  • the transporting pipe 212 circulates the flowing fluid (chlorine dioxide aqueous solution or water) through the containers 211 and the chlorine dioxide aqueous solution mixer 214.
  • the chlorine dioxide aqueous solution mixer 214 is operable to mix the gaseous chlorine dioxide advanced from the electrolysis unit 11 with the flowing fluid, increasing its chlorine dioxide concentration.
  • the chlorine dioxide aqueous solution mixer 214 is a prior art disclosed in PCT publication number WO/ 2017 / 113111 , and will not be discussed in further details in this disclosure.
  • the control valve set 215 includes a plurality of control valves 216 that are mounted on the transporting pipe 212 and that are electronically connected to the control unit 23.
  • control valves 216 are grouped into pairs , each pair being respectively located at opposite sides of a respective one of the containers 211, being operable for permitting and blocking the circulation of the water and the chlorine dioxide aqueous solution via the respective one of the containers 211, and being able to be manually controlled when not electronically connected.
  • the measuring unit 22 includes an ORP (Oxidation-Reduction Potential) meter 221 mounted on the transporting pipe 212 between the chlorine dioxide aqueous solution mixer 214 and one of the containers 211 which is closest to the chlorine dioxide aqueous solution mixer 214, and a display monitor 222 digitally connected to the ORP meter 221.
  • the ORP meter 221 of the measuring unit 22 is operable to measure redox potential of the chlorine dioxide aqueous solution passing therethrough and to process a digital signal to be sent to the display monitor 222 and the control unit 23.
  • the display monitor 222 simply displays the redox potential value measured.
  • the control unit 23 which is a computer in this embodiment, receives and compares the measured redox potential value from the ORP meter 221 with a predetermined value for actuating and terminating operation of the control valve set 215.
  • the mixing unit 21 by filling the containers 211 with water from the water inlet 213 first, which in turns circulate the water throughout the transporting pipe 212 and the chlorine dioxide aqueous solution mixer 214. Then, the chlorine dioxide generating device 1 is initiated, such that the feeding unit 12 feeds electrolytic solution to the electrolytic cell 111, which in turns generates gaseous chlorine dioxide by electrolysis.
  • the gaseous chlorine dioxide is collected by the gas transporting pipe 112 and is transported to the chlorine dioxide aqueous solution mixer 214 of the mixing unit 21, while the byproducts of the electrolysis is transported out of the system through the waste exhaust pipe 113.
  • the gaseous chlorine dioxide is mixed together with the water in the chlorine dioxide aqueous solution mixer 214 to form chlorine dioxide aqueous solution, which circulates into the containers 211.
  • the chlorine dioxide aqueous solution in the container 211 driven by the ongoing fluid circulation throughout the transporting pipe 212, is then driven back into the chlorine dioxide aqueous solution mixer 214 yet again, mixing with more gaseous chlorine dioxide to increase its concentration. The process repeats.
  • the measuring unit 22 constantly measures the redox potential passing therethrough and sends the signal to the control unit 23 for value comparison. Once the measured value exceeds or equals to the predetermined value, the concentration of the chlorine dioxide solution has reached minimal standard, in which the control unit 23 is operable to send signals to terminate operation of the control valves 216 and to stop the circulation of fluid in the mixing and measuring device 2.
  • the containers 211 would have the finished products ready for shipping, and may be replaced with a new set of containers 211 for the next production.
  • the automated measurement of the measuring unit 22 and the control unit 23 alleviate the need for human sampling.
  • the control unit 23 converts the redox potential value into the equivalent concentration value when it compares values.
  • the measuring unit 22 may be assigned to directly convert the redox potential value into the equivalent concentration instead when sending signals to the display monitor 222 and the control unit 23.
  • the number of containers 211 is subject to change, and is not restricted to the four containers 211 mentioned in this embodiment.
  • the number of control valves 216 should corresponds to the number of the containers 211.
  • the electronic communication in this embodiment is connected directly by wires, it may also be wireless in other embodiments.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

La présente invention concerne un système de production de solution aqueuse de dioxyde de chlore qui comprend une unité d'électrolyse, et un dispositif de mélange et de mesure comprenant une unité de mélange, une unité de mesure et une unité de commande. L'eau s'écoulant d'un ensemble de récipients de l'unité de mélange dans un mélangeur de solution aqueuse de dioxyde de chlore de l'unité de mélange et du dioxyde de chlore gazeux avancé à partir de l'unité d'électrolyse sont mélangés pour former une solution aqueuse de dioxyde de chlore circulant à travers le tuyau de transport et l'ensemble de récipients. L'unité de commande compare la valeur de potentiel redox mesurée de l'unité de mesure avec une valeur prédéfinie pour commander le fonctionnement d'un ensemble de soupapes de commande de l'unité de mélange pour permettre et bloquer la circulation de l'eau et de la solution aqueuse de dioxyde de chlore.
PCT/IB2018/052482 2017-05-04 2018-04-10 Système de production de solution aqueuse de dioxyde de chlore Ceased WO2018203158A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW106114742 2017-05-04
TW106114742A TWI702185B (zh) 2017-05-04 2017-05-04 二氧化氯水溶液生產設備

Publications (1)

Publication Number Publication Date
WO2018203158A1 true WO2018203158A1 (fr) 2018-11-08

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ID=64016640

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PCT/IB2018/052482 Ceased WO2018203158A1 (fr) 2017-05-04 2018-04-10 Système de production de solution aqueuse de dioxyde de chlore

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Country Link
CN (1) CN108796546B (fr)
TW (1) TWI702185B (fr)
WO (1) WO2018203158A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110528018A (zh) * 2019-09-25 2019-12-03 宜兴市翔翮环保设备有限公司 一种二氧化氯消毒液制备装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006015071A1 (fr) * 2004-07-29 2006-02-09 Pureline Treatment Systems, Llc Generateur de solution de dioxyde de chlore
WO2006062456A1 (fr) * 2004-12-06 2006-06-15 Akzo Nobel N.V. Processus chimique et unite de production
JP2015217334A (ja) * 2014-05-16 2015-12-07 セントラルフィルター工業株式会社 亜塩素酸および二酸化塩素を含有した殺菌水の生成装置
CN204958389U (zh) * 2015-09-23 2016-01-13 青岛巨川环保科技有限公司 一种二氧化氯发生器供水系统
JP2016182590A (ja) * 2015-03-27 2016-10-20 セントラルフィルター工業株式会社 二酸化塩素含有殺菌水の生成装置

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1963231A2 (fr) * 2005-10-24 2008-09-03 Pureline Treatment Systems, LLC Systeme de traitement d'eau a base de dioxyde de chlore pour applications a bord de bateau
US9445602B2 (en) * 2010-11-16 2016-09-20 Strategic Resource Optimization, Inc. Electrolytic system and method for generating biocides having an electron deficient carrier fluid and chlorine dioxide
CN204874764U (zh) * 2015-08-13 2015-12-16 元琪生化科技有限公司 一种二氧化氯水溶液产生系统
CN205575631U (zh) * 2015-11-20 2016-09-14 北京鹏盛天纤科技有限公司 一种二氧化氯发生系统
CN205462057U (zh) * 2016-02-14 2016-08-17 优尼克生技股份有限公司 包括二氧化氯气体的水溶液的制造设备
CN207418874U8 (zh) * 2017-05-04 2018-07-20 优尼克生技股份有限公司 二氧化氯水溶液生产设备

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006015071A1 (fr) * 2004-07-29 2006-02-09 Pureline Treatment Systems, Llc Generateur de solution de dioxyde de chlore
WO2006062456A1 (fr) * 2004-12-06 2006-06-15 Akzo Nobel N.V. Processus chimique et unite de production
JP2015217334A (ja) * 2014-05-16 2015-12-07 セントラルフィルター工業株式会社 亜塩素酸および二酸化塩素を含有した殺菌水の生成装置
JP2016182590A (ja) * 2015-03-27 2016-10-20 セントラルフィルター工業株式会社 二酸化塩素含有殺菌水の生成装置
CN204958389U (zh) * 2015-09-23 2016-01-13 青岛巨川环保科技有限公司 一种二氧化氯发生器供水系统

Also Published As

Publication number Publication date
TW201843101A (zh) 2018-12-16
TWI702185B (zh) 2020-08-21
CN108796546B (zh) 2021-05-18
CN108796546A (zh) 2018-11-13

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