Detection pool for hydrogen peroxide production on-line detection system

Abstract

The utility model relates to the technical field of hydrogen peroxide detection, and discloses a detection pool for a hydrogen peroxide production on-line detection system, which comprises a pool body, a base is fixed on the pool body through bolts, a light path channel and a material channel are arranged in the pool body, and a material conveying pipe for conveying materials is detachably arranged in the material channel. The light path channel is radially formed in the tank body, the material channel is axially formed in the tank body, optical fiber assemblies are arranged at the two ends of the light path channel and comprise collimating lenses, and the collimating lenses are arranged at the two ends of the light path channel and are in threaded connection with the tank body. According to the detection pool for the hydrogen peroxide production online detection system, the material conveying pipe is arranged in the material channel of the pool body, so that a working solution sample can be directly conveyed from the material conveying pipe and does not need to be in direct contact with the material channel in the pool body, the material conveying pipe can be detached to be cleaned or replaced after being polluted, and the pool body and other parts are not easily influenced; the maintenance workload is reduced, and the efficiency of the production device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen peroxide detection, in particular to a detection pool for an online detection system for hydrogen peroxide production. Background Art

[0002] Hydrogen peroxide (hydrogen peroxide) is a common chemical product that can be used as an oxidant, bleaching agent, disinfectant, dechlorinating agent, rocket fuel, organic or inorganic peroxides, foam plastics and other porous materials. It is widely used in the medical, military and industrial fields. The industrial production methods of hydrogen peroxide mainly include electrolysis, anthraquinone method, isopropanol method, cathode anode reduction method and direct hydrogen-oxygen combination method. The anthraquinone method is the most important method for producing hydrogen peroxide at home and abroad. In view of the explosiveness and other characteristics of hydrogen peroxide, in the hydrogenation, oxidation and extraction processes of hydrogen peroxide production, the hydrogen peroxide content of the process medium hydrogenated liquid, oxidized liquid and raffinate is an important online monitoring indicator. At present, some hydrogen peroxide production companies have adopted online detection systems based on spectral technology to perform real-time online detection of these indicators.

[0003] In the process of hydrogen peroxide production, the online detection of working fluid samples usually uses a flow-through detection cell installed on the side of the process pipeline. There are mutually perpendicular optical channels and material channels inside the detection cell, where the material channel is a section of the pipeline through which the material flows directly and directly contacts the material. In actual use, since the material channel of the detection cell will be in contact with the working fluid and other process media for a long time, the inside of the detection cell is prone to contamination and reduced light flux. In such cases, operators need to regularly remove the detection cell from the process pipeline and clean the channels and optical components inside it. This type of maintenance work is time-consuming and requires professional technicians to operate, which is not conducive to the efficient, stable and continuous operation of the production device. Utility Model Content

[0004] The purpose of the utility model is to provide a detection pool for an online detection system for hydrogen peroxide production, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a detection cell for an online detection system for hydrogen peroxide production, comprising: a cell body, the cell body being fixed with a base by bolts, an optical path channel and a material channel being provided in the cell body, and a conveying pipe for conveying materials being detachably provided in the material channel.

[0006] Preferably, the optical path channel is radially opened in the cell body.

[0007] Preferably, the material channel is opened axially in the tank body.

[0008] Preferably, optical fiber components are arranged at both ends of the optical path channel, and the optical fiber components include collimating lenses.

[0009] Preferably, the collimating lenses are arranged at both ends of the optical path and are threadedly connected to the cell body.

[0010] Preferably, the feed pipe is connected to a clamp.

[0011] Preferably, the clamp is a fixing ring, and the fixing ring is sleeved outside the feed pipe.

[0012] Preferably, the fixing ring is embedded in the pool body.

[0013] Preferably, the fixing ring and the feed pipe are fixed by bolts.

[0014] Preferably, the fixing ring and the base are fixed by bolts.

[0015] The detection pool for the online detection system of hydrogen peroxide production has the following beneficial effects:

[0016] The detection cell used in the online detection system for hydrogen peroxide production has a feed pipe arranged in the material channel of the cell body so that the working fluid sample can be directly transported from the feed pipe without direct contact with the material channel in the cell body. After the feed pipe is contaminated, it only needs to be disassembled, cleaned or replaced, and it is not easy to affect the cell body and other components, which not only reduces the maintenance workload but also improves the efficiency of the production device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of a detection cell for an online detection system for hydrogen peroxide production provided in an embodiment of the present application.

[0018] In the figure: 1. cell body; 2. collimating lens; 3. feed pipe; 4. fixing ring. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model provides an embodiment of a detection pool for an online detection system for hydrogen peroxide production, which can be applied to online spectrum monitoring of various clear and transparent liquid samples at production sites including hydrogen peroxide production devices.

[0021] like Figure 1As shown, the detection cell comprises: a cell body 1, the cell body 1 is fixed with a base by bolts, an optical path channel is radially opened in the cell body 1, and a material channel is axially opened.

[0022] Among them, optical fiber components are arranged at both ends of the optical path channel, and the optical fiber components include collimating lenses 2. The collimating lenses 2 are arranged at both ends of the optical path channel and are threadedly connected to the cell body 1. The optical fiber component at one end of the optical path channel is connected to the spectrometer detector, and the optical fiber component at the other end is connected to the spectrometer.

[0023] A material delivery pipe 3 for delivering materials (working fluid samples in the hydrogen peroxide production process) is detachably provided in the material channel, and the inner diameter of the material channel is consistent with the outer diameter of the material delivery pipe 3 .

[0024] Specifically, the feed pipe 3 is connected to a clamp, and the clamp is a fixing ring 4. The fixing ring 4 embedded in the tank body 1 is sleeved outside the feed pipe 3. The fixing ring 4 and the feed pipe 3 are fixed by bolts, and the fixing ring 4 and the base are fixed by bolts.

[0025] In this embodiment, when the detection cell is installed on site, it is only necessary to unscrew the bolts on the fixing ring 4 and remove the fixing ring 4 from the cell body 1, insert the feed pipe 3 of the corresponding size into the material channel, and fix the feed pipe 3 in the channel through the fixing ring 4 and the bolts on the fixing ring 4, ensuring that the feed pipe 3 is not easily displaced during spectral detection.

[0026] When in use, the spectrum of the empty feed pipe 3 is first measured as a background reference spectrum, and then the working liquid sample in the hydrogen peroxide production process enters the feed pipe 3 through pumping or pressure difference, and the light signal emitted by the spectrometer is transmitted to the cell body 1 through the SMA 905 standard optical fiber connectors on both sides of the cell, and interacts with the medium to be measured in the feed pipe 3 after being collimated and converged by the collimating lens 2. Then the transmitted light signal passes through the collimating lens 2 and the optical fiber assembly again to return to the spectrometer detector to obtain a spectrum, so that the transmission absorption spectrum of the material can be collected as the sample spectrum for analysis.

[0027] During maintenance, when the feed pipe 3 is contaminated, the bolts on the fixing ring 4 can be loosened to remove the feed pipe 3 for cleaning or replace it with a new pipe. This will not easily affect the tank body 1 and other components, and there is no need to disassemble and clean the tank body 1 itself, which not only reduces the maintenance workload but also improves the efficiency of the production device.

[0028] It can be understood that by arranging the feed pipe 3 in the material channel of the cell body 1, the working liquid sample can be directly transported from the feed pipe 3 without direct contact with the material channel in the cell body 1, so that the analysis result is more accurate. Compared with the online detection system in the prior art that uses a circulating liquid detection cell, the detection cell of the present application has no other liquid-contacting components except the feed pipe 3, which makes the overall installation and disassembly of the detection cell more convenient and quick.

[0029] Working principle: first measure the spectrum of the empty feed pipe 3 as the background reference spectrum, then the working liquid sample in the hydrogen peroxide production process enters the feed pipe 3 through pumping or pressure difference, the light signal emitted by the spectrometer is transmitted to the cell body 1, and after being collimated and converged by the collimating lens 2, it interacts with the medium to be measured in the feed pipe 3, and then the transmitted light signal passes through the collimating lens 2 and the optical fiber component again to return to the spectrometer detector to obtain the spectrum, so that the transmission absorption spectrum of the material can be collected as the sample spectrum for analysis.

[0030] In summary, although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A detection cell for an online detection system for hydrogen peroxide production, characterized in that: include: A cell body (1), wherein the cell body (1) is fixed to a base by bolts, and an optical path channel and a material channel are provided in the cell body (1); A material conveying pipe (3) for conveying materials is detachably arranged in the material channel.

2. The detection cell for an online detection system for hydrogen peroxide production according to claim 1, characterized in that: The optical path channel is radially opened in the cell body (1).

3. The detection cell for an online detection system for hydrogen peroxide production according to claim 1, characterized in that: The material channel is axially opened in the tank body (1).

4. The detection cell for an online detection system for hydrogen peroxide production according to claim 1, characterized in that: Optical fiber components are arranged at both ends of the optical path channel, and the optical fiber components include a collimating lens (2).

5. The detection cell for an online detection system for hydrogen peroxide production according to claim 4, characterized in that: The collimating lenses (2) are arranged at both ends of the optical path channel and are threadedly connected to the cell body (1).

6. The detection cell for an online detection system for hydrogen peroxide production according to claim 1, characterized in that: The material delivery pipe (3) is connected to a clamp.

7. The detection cell for an online detection system for hydrogen peroxide production according to claim 6, characterized in that: The clamp is a fixing ring (4), and the fixing ring (4) is sleeved outside the material conveying pipe (3).

8. The detection cell for an online detection system for hydrogen peroxide production according to claim 7, characterized in that: The fixing ring (4) is embedded in the tank body (1).

9. The detection cell for an online detection system for hydrogen peroxide production according to claim 8, characterized in that: The fixing ring (4) and the material conveying pipe (3) are fixed by bolts.

10. The detection cell for an online detection system for hydrogen peroxide production according to claim 7, characterized in that: The fixing ring (4) is fixed to the base via bolts.

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