CN209673711U - Hydrogen peroxide concentration online monitoring method system in a kind of fabric bleaching technique - Google Patents

Hydrogen peroxide concentration online monitoring method system in a kind of fabric bleaching technique Download PDF

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Publication number
CN209673711U
CN209673711U CN201822192501.0U CN201822192501U CN209673711U CN 209673711 U CN209673711 U CN 209673711U CN 201822192501 U CN201822192501 U CN 201822192501U CN 209673711 U CN209673711 U CN 209673711U
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hydrogen peroxide
pipe
valve
detection
monitoring method
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CN201822192501.0U
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向忠
吴金波
钱淼
胡旭东
黄烨锋
邵一洲
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Zhejiang University of Technology ZJUT
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Zhejiang University of Technology ZJUT
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Abstract

The utility model relates to hydrogen peroxide concentration online monitoring method system and methods in a kind of fabric bleaching technique, including feed unit, sampling unit and detection unit;Feed unit includes material-compound tank, batching pipe, speed governing valve and flowmeter;The output end of material-compound tank connects batching pipe;Speed governing valve and flowmeter are installed in batching pipe;Sampling unit includes Bellmer, probe tube, filter, check valve and delivery pipe;Bellmer is connected with batching pipe, is connected to the filter by probe tube;Filter is connected to detection unit;Check valve is installed in delivery pipe;Detection unit includes hydrogen peroxide detection device, circulation pipe and potentiostat;Hydrogen peroxide detection device is electrically connected with potentiostat;Circulation pipe connects hydrogen peroxide detection device and Bellmer.The utility model realizes the online monitoring method to hydrogen peroxide concentration in fabric bleaching technique, reduces labor intensity of workers, while being not necessarily to destructive test liquid component, enables to detect liquid cycling and reutilization, reduces bleaching liquid in the consumption of detection.

Description

Hydrogen peroxide concentration online monitoring method system in a kind of fabric bleaching technique
[technical field]
The utility model relates to a kind of hydrogen peroxide concentration online monitoring method systems, and in particular to double in a kind of fabric bleaching technique Oxygen water concentration online monitoring method system, belongs to the detection device technical field of weave dyeing and finishing technique parameter.
[background technique]
Bleaching is one of important procedure in fabric pretreatment, and effect is the natural pigment for removing fabric surface, is improved The whiteness of fabric, so as to the progress of subsequent dyeing and printing process.In fabric bleaching, the hydrogen peroxide under high alkali environment is a kind of extensive use Bleaching agent for unchlorine, and retention of whiteness high with bleach product whiteness be good, do not discharge toxic gas in bleaching process, to setting Standby corrosion-free effect, environmental pollution is small, be suitable for multiple fiber bleaching and can use the excellent spies such as a variety of processing technologys Property.Therefore the important prerequisite of product quality is to ensure that according to the hydrogen peroxide concentration in the accurate monitoring bleaching liquid of technique requirement, otherwise Whiteness will be easily caused and capillary effect is bad, wrinkle strip, tendering, depth color spot etc. quality problems, seriously affect final product quality.
At this stage, the detection method of hydrogen peroxide concentration includes artificial offline inspection and two kinds of on-line checking in bleaching liquid.People Work detection uses oxidimetry, and time-consuming, and low efficiency is unable to satisfy enterprise demand.Existing online monitoring method gimmick is often Need to destroy the concentration of component of sample liquid, such as " the hydrogen peroxide concentration on-line checking of dyeing and printing process liquid disclosed in CN107132224A Device and method ", " a kind of automation concentration of hydrogen peroxide on-line detecting system and detection method " disclosed in CN108645960A, " a kind of online measuring technique of hydrogen peroxide concentration " disclosed in CN106053651A this cause in on-line checking bleaching liquid waste tight Weight.
Therefore, in order to solve the above technical problems, it is necessory to a kind of innovation is provided fabric bleaching technique in hydrogen peroxide it is dense Online monitoring method system is spent, to overcome the defect in the prior art.
[utility model content]
To solve the above problems, the purpose of this utility model is to provide a kind of detection accuracy height, sampling can be recycled Hydrogen peroxide concentration online monitoring method system in liquid, fabric bleaching technique easy to maintain can avoided due to hydrogen peroxide concentration not Meet caused by process requirements fabric whiteness not enough, uneven bleaching the problems such as while, reduce due to detection bring bleaching Liquid waste.
To achieve the above object, the technical solution that the utility model is taken are as follows: hydrogen peroxide is dense in a kind of fabric bleaching technique Spend online monitoring method system comprising feed unit, sampling unit and detection unit;
The feed unit includes material-compound tank, batching pipe, speed governing valve and flowmeter;The output end of the material-compound tank connects Batching pipe;Speed governing valve and flowmeter are installed in the batching pipe;
The sampling unit includes Bellmer, probe tube, filter, check valve and delivery pipe;The Bellmer and match Expects pipe connection, is connected to the filter by probe tube;The filter is connected to detection unit by delivery pipe;The conveying Check valve is installed on pipe;
The detection unit includes hydrogen peroxide detection device, circulation pipe and potentiostat;The hydrogen peroxide detection device It is electrically connected with potentiostat;The circulation pipe connection hydrogen peroxide detection device and Bellmer.
Hydrogen peroxide concentration online monitoring method system is further in the fabric bleaching technique of the utility model are as follows: the hydrogen peroxide inspection Survey device include thermometer, PH sensor, working electrode, reference electrode, to electrode, fixed end cap, detection cell, concussion plate, super Acoustic wave transducer, bottom surface end cap, discharge outlet, circulation port, feed inlet, calibration mouth, exhaust bolt;
The thermometer, working electrode, reference electrode, is equipped with external screw thread to electrode upper at PH sensor, fixes in end cap There is a threaded hole in portion, and thermometer, working electrode, reference electrode, fixing end is threadedly secured to electrode is covered PH sensor, And it is sealed by sealing ring;
The thermometer, working electrode, reference electrode, is provided with strip metallic conductor to electrode upper at PH sensor, It is electrically connected by electric wire with potentiostat;
The fixing end outer side of lid is machined with external screw thread, and internal screw thread, fixed end cap and detection cell are machined on the inside of detection cell It is connected through a screw thread;
The detection bottom of pond portion is equipped with concussion plate, and shaking has a ultrasonic transducer under plate, and ultrasonic transducer is logical Cross the encapsulation of bottom surface end cap;
The detection cell lower left side is provided with circulation port, feed inlet, calibration mouth, and lower right side is provided with discharge outlet, and upper left quarter sets up separately It is equipped with an exhaust bolt.
Hydrogen peroxide concentration online monitoring method system is further in the fabric bleaching technique of the utility model are as follows: the delivery pipe Output end is connect with feed inlet, and the input terminal of circulation pipe is connect with circulation port, and the output end of circulation pipe is connect with Bellmer.
Hydrogen peroxide concentration online monitoring method system is further in the fabric bleaching technique of the utility model are as follows: the detection unit It further comprise standard sample tank, standard batching pipe and drainpipe;The input terminal and standard sample tank of the standard batching pipe Connection, output end are connect with calibration mouth;The input terminal of the drainpipe is connect with discharge outlet.
Hydrogen peroxide concentration online monitoring method system is further in the fabric bleaching technique of the utility model are as follows: the detection unit It further include calibration shut-off valve, circulation shut-off valve and drain stop valve;The calibration shut-off valve is mounted in standard batching pipe, is followed Ring shut-off valve is mounted on circulation pipe, and drain stop valve is mounted on drainpipe.
Hydrogen peroxide concentration online monitoring method system is also in the fabric bleaching technique of the utility model are as follows: it includes control and data Processing unit, control include the industrial personal computer with man-machine interface, the speed governing valve, flowmeter, calibration cut-off with data processing unit Valve, circulation shut-off valve, potentiostat, hydrogen peroxide detection device, drain stop valve and industry control mechatronics, and by industrial personal computer control System.
Compared with prior art, the utility model has the following beneficial effects:
1. the utility model can be fast with data processing unit using feed unit, sampling unit, detection unit and control Speed accurately detects hydrogen peroxide concentration, and quickly adjusts hydrogen peroxide concentration according to testing result, maximumlly ensure that product Stablize.
2. the utility model uses amperometric detection, do not need to destroy sample liquid concentration of component, sample liquid recycling may be implemented It utilizes, reduces bleaching liquid waste, reduce discharge of wastewater.
3. the utility model uses full-automatic on-line measurement method, operator does not need to repeat mechanically to operate, reduce Working strength, while without directly contact chemicals, it is highly-safe.
4. the utility model measurement result can be transmitted directly to control and data processing unit, hydrogen peroxide concentration inspection is realized Digitlization is surveyed, conducive to the intelligent development of Dyeing-finishing Industry.
[Detailed description of the invention]
Fig. 1 is the structural schematic diagram of hydrogen peroxide concentration online monitoring method system in the fabric bleaching technique of the utility model.
Fig. 2 is the top view of the hydrogen peroxide detection device in Fig. 1.
Fig. 3 is the sectional view in Fig. 2 along A-A.
[specific embodiment]
It please refers to shown in Figure of description 1 to attached drawing 3, the utility model is hydrogen peroxide concentration in a kind of fabric bleaching technique Online monitoring method system, by feed unit A, sampling unit B, detection unit C and a few part groups such as control and data processing unit D At.
Wherein, the feed unit A includes material-compound tank 1, batching pipe 19, speed governing valve 2 and flowmeter 3.The material-compound tank 1 Output end be connected with batching pipe 19, speed governing valve 2 and flowmeter 3 are installed in batching pipe 19.
The sampling unit B includes Bellmer 4, probe tube 14, filter 7, check valve 8 and delivery pipe 16.The drift White pond 4 and batching pipe 19 connect, and are connect by probe tube 14 with filter 7.Filter 7 has filtering function and self-cleaning function Energy.Bleaching liquid enters detection unit after filter 7, through delivery pipe 16.One check valve 8 is installed to be used in delivery pipe 16 Prevent liquid reflux.
The detection unit C includes hydrogen peroxide detection device 11, circulation pipe 18 and potentiostat 10.Hydrogen peroxide detection dress It sets 11 to be electrically connected with potentiostat 10, passes through amperometric detection hydrogen peroxide concentration.After the completion of detection, bleaching liquid passes through circulation pipe 18 Return to Bellmer.
Further, the hydrogen peroxide detection device 11 includes thermometer 11-1, PH sensor 11-2, working electrode 11- 3, reference electrode 11-4, to electrode 11-5, fixed end cap 11-6, detection cell 11-7, concussion plate 11-8, ultrasonic transducer 11- 9, bottom surface end cap 11-10, discharge outlet 11-11, circulation port 11-12, feed inlet 11-13, calibration mouth 11-14, exhaust bolt 11- 15。
It the thermometer 11-1, PH sensor 11-2, working electrode 11-3, reference electrode 11-4, is to use to electrode 11-5 In the device of measurement hydrogen peroxide concentration, external screw thread is arranged at top, has threaded hole inside fixed end cap 11-6, electrode passes through with sensor It is threadedly secured on fixed end cap 11-6, and sealed by sealing ring 11-16.
The thermometer 11-1, PH sensor 11-2, working electrode 11-3, reference electrode 11-4, to the top electrode 11-5 It is provided with strip metallic conductor, is electrically connected by electric wire with potentiostat 10.
It is machined with external screw thread on the outside of the fixed end cap 11-6, internal screw thread, fixed end cap are machined on the inside of detection cell 11-7 11-6 is connected through a screw thread with detection cell 11-7.
The bottom the detection cell 11-7 is equipped with concussion plate 11-8, and shaking under plate 11-8 has a ultrasonic transducer 11- 9, ultrasonic transducer 11-9 are encapsulated by bottom surface end cap 11-10.Ultrasonic transducer 11-9 can drive concussion plate 11-8 vibration, To realize cleaning function.
The detection cell 11-7 lower left side is provided with circulation port 11-12, feed inlet 11-13, calibration mouth 11-14, and lower right side is opened There is discharge outlet 11-11, upper left is provided with an exhaust bolt 11-15.Meeting build-up of oxygen, exhaust bolt in hydrogen peroxide detection 11-15 can achieve release oxygen, prevent the effect that overpressure is excessive.
16 input terminal of delivery pipe is connect with filter 7, and output end is connect with feed inlet 11-13, and circulation pipe 18 inputs End is connect with circulation port 11-12, and output end is connect with Bellmer 4.
The detection unit C further comprises standard sample tank 5, standard batching pipe 15, drainpipe 17.The standard ingredient 15 input terminal of pipe is connect with standard sample tank 5, and output end is connect with calibration mouth 11-14, for defeated to hydrogen peroxide detection device 11 Enter known dense solution, judges whether hydrogen peroxide detection device 11 can accurately measure.17 input terminal of drainpipe and discharge outlet 11-11 connection.
The detection unit C further includes calibration shut-off valve 6, recycles shut-off valve 9, drain stop valve 12, each for controlling The opening and closing of pipeline.The calibration shut-off valve 6 is mounted in standard batching pipe 15, and circulation shut-off valve 9 is mounted on circulation pipe 18, is arranged Water shut-off valve 12 is mounted on drainpipe 17.
The potentiostat 10 can provide constant voltage to hydrogen peroxide detection device 11, and can will be between sensor and electrode Electric signal be converted into digital signal and be sent to control and data processing unit D.Under constant voltage, control and data processing list First D can calculate hydrogen peroxide solution concentration by the current value, temperature value and pH value of three-electrode system.
The control and data processing unit D mainly include the industrial personal computer 13 with man-machine interface, the industry control with man-machine interface Program in machine 13 containing control with detection.The speed governing valve 2, flowmeter 3, calibration shut-off valve 6, circulation shut-off valve 9, constant potential Instrument 10, hydrogen peroxide detection device 11, drain stop valve 12 are electrically connected with the industrial personal computer 13 with man-machine interface.
The method that hydrogen peroxide concentration on-line checking is carried out using above-mentioned on-line measuring device, comprising the following steps:
(1) feed step: control closes calibration shut-off valve 6, drain stop valve 12, control speed regulation with data processing unit D Valve 2 feeds and calculates total feed by flowmeter 3, until inlet amount meets technological standards, end charging.
(2) detecting step: sampling unit B is sampled work, will be transported to hydrogen peroxide detection dress by the sample liquid of filtering Set 11, the electric signal that potentiostat 10 collects hydrogen peroxide detection device 11 is simultaneously sent to control and data processing unit D, control and Comprehensive 10 signal of potentiostat of data processing unit D and 3 signal of flowmeter, in conjunction with approximate mechanism model and compensation model, finally Obtain hydrogen peroxide concentration.Openable exhaust bolt 11-15 deflates after detecting for a long time, excessive to avoid overpressure.
(3) rate-determining steps: data processing unit D controls speed governing valve 2 according to hydrogen peroxide concentration value, using pid control algorithm, Feed rate is adjusted, and calculates total flow with flowmeter 3, to control the concentration of hydrogen peroxide in bleaching liquid.
The method of the utility model further comprises the calibration steps before feed step, specifically: closing calibration cut-off Valve 6 and circulation shut-off valve 9, open drain stop valve 12, after liquid drains within hydrogen peroxide detection device 11, control and data Processing unit D closes circulation shut-off valve 9 and drain stop valve 12, opens calibration shut-off valve 6.Standard sample tank 5 contains hydrogen peroxide Solution known to hydrogen peroxide concentration is transported within hydrogen peroxide detection device 11 by solution known to concentration, standard batching pipe 15. If control is correct with data processing unit D display density, drain stop valve 12 is opened, is normally surveyed after draining Amount.If incorrect, need to carry out cleaning operation or replacement electrode.
The method of the utility model further includes cleaning step, specifically: control is closed calibration with data processing unit D and is cut Only valve 6, circulation shut-off valve 9 and drain stop valve 12.Material-compound tank 1 contains distilled water, and control controls ingredient with data processing unit D Distilled water is injected hydrogen peroxide detection device 11 by 1 output distilled water of tank, sampling unit B.11 bottom of hydrogen peroxide detection device peace Equipped with ultrasonic transducer 11-9.Control drives concussion plate 11-8 vibration with data processing unit D control ultrasonic transducer 11-9 It is dynamic, cleaning function is completed using ultrasonic cleaning principle.Furthermore circulation shut-off valve 9 can also be opened, the remnants in pipeline are removed Process liquor.After the completion of cleaning, other steps can be carried out after opening 12 drain of drain stop valve.
The application is passed by amperometric detection mode using three-electrode system 11-3,11-4,11-5, thermometer 11-1, PH Sensor 11-2, flowmeter 3 realize detection.Be aided with speed governing valve 2,6,9,12 equal controller of shut-off valve simultaneously, then by control with Data processing unit D program realizes the observing and controlling to hydrogen peroxide solution concentration in fabric bleaching technique.This method not only can be quick It is accurately realized the on-line measurement of hydrogen peroxide solution concentration, reduces the working strength of employee, improves the automation journey of bleaching process Degree can not also destroy the concentration of component of sampling liquid, realize the recycling of sampling liquid, greatly reduce bleaching liquid in detection ring Waste in section.In addition, sampling unit is provided with filter 7, hydrogen peroxide detection device 11 is provided with calibration mouth 11-14, ultrasound Wave transducer 11-9, exhaust bolt 11-15 realize the filtering, cleaning, calibration, deflation function of system, improve the reliable of system Property with it is maintainable.
Above specific embodiment is only the preferred embodiment of this creation, all in this wound not to limit this creation Any modification, equivalent substitution, improvement and etc. done within the spirit and principle of work, should be included in this creation protection scope it It is interior.

Claims (5)

1. hydrogen peroxide concentration online monitoring method system in a kind of fabric bleaching technique, it is characterised in that: single including feed unit, sampling Member and detection unit;
The feed unit includes material-compound tank, batching pipe, speed governing valve and flowmeter;The output end of the material-compound tank connects ingredient Pipe;Speed governing valve and flowmeter are installed in the batching pipe;
The sampling unit includes Bellmer, probe tube, filter, check valve and delivery pipe;The Bellmer and batching pipe Connection, is connected to the filter by probe tube;The filter is connected to detection unit by delivery pipe;In the delivery pipe Check valve is installed;
The detection unit includes hydrogen peroxide detection device, circulation pipe and potentiostat;The hydrogen peroxide detection device and perseverance Potentiometer electrical connection;The circulation pipe connection hydrogen peroxide detection device and Bellmer.
2. hydrogen peroxide concentration online monitoring method system in fabric bleaching technique as described in claim 1, it is characterised in that: described double Oxygen water detection device include thermometer, PH sensor, working electrode, reference electrode, to electrode, fixed end cap, detection cell, concussion Plate, ultrasonic transducer, bottom surface end cap, discharge outlet, circulation port, feed inlet, calibration mouth, exhaust bolt;
The thermometer, working electrode, reference electrode, is equipped with external screw thread to electrode upper at PH sensor, and fixed cover internal has Threaded hole, thermometer PH sensor, working electrode, reference electrode, fixing end are threadedly secured to electrode are covered, and lead to Cross sealing ring sealing;
The thermometer, working electrode, reference electrode, is provided with strip metallic conductor to electrode upper at PH sensor, passes through Electric wire is electrically connected with potentiostat;
The fixing end outer side of lid is machined with external screw thread, and internal screw thread is machined on the inside of detection cell, and fixed end cap passes through with detection cell It is threadedly coupled;
The detection bottom of pond portion is equipped with concussion plate, and shaking under plate has a ultrasonic transducer, and ultrasonic transducer passes through bottom The encapsulation of face end cap;
The detection cell lower left side is provided with circulation port, feed inlet, calibration mouth, and lower right side is provided with discharge outlet, and upper left is provided with One exhaust bolt.
3. hydrogen peroxide concentration online monitoring method system in fabric bleaching technique as claimed in claim 2, it is characterised in that: described defeated The output end of pipe is sent to connect with feed inlet, the input terminal of circulation pipe is connect with circulation port, and the output end and Bellmer of circulation pipe connect It connects.
4. hydrogen peroxide concentration online monitoring method system in fabric bleaching technique as claimed in claim 2, it is characterised in that: the inspection Surveying unit further comprises standard sample tank, standard batching pipe and drainpipe;The input terminal and standard of the standard batching pipe Sample jar connection, output end are connect with calibration mouth;The input terminal of the drainpipe is connect with discharge outlet.
5. hydrogen peroxide concentration online monitoring method system in fabric bleaching technique as claimed in claim 4, it is characterised in that: the inspection Surveying unit further includes calibration shut-off valve, circulation shut-off valve and drain stop valve;The calibration shut-off valve is mounted on standard ingredient Guan Shang, circulation shut-off valve are mounted on circulation pipe, and drain stop valve is mounted on drainpipe.
CN201822192501.0U 2018-12-26 2018-12-26 Hydrogen peroxide concentration online monitoring method system in a kind of fabric bleaching technique Active CN209673711U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109580755A (en) * 2018-12-26 2019-04-05 浙江理工大学 Hydrogen peroxide concentration online monitoring method system and method in a kind of fabric bleaching technique
CN113551943A (en) * 2020-04-23 2021-10-26 中国石油化工股份有限公司 System and method for monitoring hydrogen peroxide concentration in raffinate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109580755A (en) * 2018-12-26 2019-04-05 浙江理工大学 Hydrogen peroxide concentration online monitoring method system and method in a kind of fabric bleaching technique
CN109580755B (en) * 2018-12-26 2023-09-26 浙江理工大学 System and method for online measurement and control of hydrogen peroxide concentration in fabric bleaching process
CN113551943A (en) * 2020-04-23 2021-10-26 中国石油化工股份有限公司 System and method for monitoring hydrogen peroxide concentration in raffinate

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