CN221506820U - Chemical waste liquid monitoring and analyzing system - Google Patents
Chemical waste liquid monitoring and analyzing system Download PDFInfo
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- CN221506820U CN221506820U CN202323523868.3U CN202323523868U CN221506820U CN 221506820 U CN221506820 U CN 221506820U CN 202323523868 U CN202323523868 U CN 202323523868U CN 221506820 U CN221506820 U CN 221506820U
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- pipeline
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- chemical waste
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- 239000007788 liquid Substances 0.000 title claims abstract description 72
- 239000002894 chemical waste Substances 0.000 title claims abstract description 25
- 238000012544 monitoring process Methods 0.000 title claims abstract description 16
- 238000001514 detection method Methods 0.000 claims abstract description 20
- 238000004140 cleaning Methods 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims abstract description 11
- 238000005070 sampling Methods 0.000 claims description 24
- 239000007789 gas Substances 0.000 claims description 12
- 239000002699 waste material Substances 0.000 claims description 7
- 239000002912 waste gas Substances 0.000 claims description 4
- 238000007781 pre-processing Methods 0.000 claims description 3
- 238000011084 recovery Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 231100001261 hazardous Toxicity 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a chemical waste liquid monitoring and analyzing system, which comprises a collecting device, a pretreatment device and an analysis and detection device; the collecting device is used for collecting a liquid sample of the chemical waste liquid; the pretreatment device is at least provided with two pipeline interfaces for connecting liquid samples, one pipeline is used for air inlet, the other pipeline is used for air outlet, the two pipelines are mixed in the self-cleaning filter, the two pipelines are conveyed to a pipeline filter for secondary filtration after being subjected to primary filtration of the self-cleaning filter, and a calibration flow path for calibration is arranged on the pipeline, and is connected with a standard gas cylinder; the liquid sample passing through the pipeline filter is conveyed to detection analysis for detection; the detection analysis device comprises a chromatograph, wherein the chromatograph is provided with a sample inlet and a sample outlet, the sample inlet is used for acquiring a liquid sample to be detected, the sample outlet returns the residual liquid sample to the pretreatment device, and a liquid outlet is arranged on the pretreatment device.
Description
Technical Field
The utility model belongs to a chemical waste gas and waste liquid detection technology, and particularly relates to a chemical waste liquid monitoring and analyzing system.
Background
In the chemical industry, exhaust gases are generally hazardous. In particular, the flare exhaust gas may contain significant amounts of combustible, toxic, highly Reactive Volatile Organics (HRVOCs). Therefore, it is required to monitor and analyze the exhaust gas discharged from the chemical production equipment or the heavy machinery in real time, so as to reduce the emission and reduce the pollution.
The monitoring technology of the prior art for chemical waste gas and waste liquid is mostly to sample through pipelines with different structures, then realize monitoring after pretreatment, and different detection instruments are also arranged on the pipelines according to the needs, so that the detection effect and the application scene are complex and changeable.
Disclosure of utility model
The utility model aims to: the utility model provides a chemical waste liquid monitoring and analyzing system, which is characterized in that pipelines are processed in a modularized manner, and each module can be integrated and packaged into a box-type structure, so that the system is suitable for various scenes and is also suitable for constructing a chemical waste gas detection cabin.
The technical scheme is as follows: the chemical waste liquid monitoring and analyzing system comprises a sampling module, a pretreatment module and an analysis and detection module;
the sampling module is used for collecting a liquid sample of the chemical waste liquid;
The pretreatment module is at least provided with two pipeline interfaces for connecting liquid samples, and comprises a liquid inlet pipeline and a liquid outlet pipeline, wherein the two pipelines are mixed in a self-cleaning filter, are conveyed to a pipeline filter for secondary filtration at the rear end after being subjected to primary filtration of the self-cleaning filter, and are provided with a calibration flow path for calibration, and the flow path is connected with a standard gas cylinder; the liquid sample passing through the pipeline filter is conveyed to a detection analysis module for detection;
The detection analysis module comprises a chromatograph, the chromatograph is connected with a sample inlet and a sample outlet, the sample inlet is used for acquiring a liquid sample to be detected, the sample outlet returns the residual liquid sample to the pretreatment module, and a liquid outlet is arranged on the pretreatment module.
Further, in the sampling module, a liquid large loop is formed by a pipe valve piece comprising a needle valve, a one-way valve and a plurality of ball valves, the liquid large loop comprises a sampling pipeline and a return pipeline, the sampling pipeline and the return pipeline are respectively connected with two pipeline interfaces on the pretreatment module, and the needle valve is connected in series between the sampling pipeline and the return pipeline.
In the system, a sampling pipeline and a return pipeline in the sampling module are connected to a chemical waste liquid pipeline through three-piece ball valves.
In the system, the self-cleaning filter is a rotary filter.
Further, in this system, the sample liquid, after entering the pretreatment module, passes through a ball valve for controlling the shut-off, and a pressure gauge is provided on the pipeline for observing the sample pressure at the site in real time.
Further, in the pretreatment module, a one-way valve is arranged on a liquid discharge pipeline of a sample outlet of the chromatograph and used for judging sample inlet and outlet flow of the chromatograph.
The sampling module, the preprocessing module and the analysis and detection module can adopt box-type structures to encapsulate corresponding pipelines, and corresponding pipeline connectors are arranged to realize connection.
Still further, the system comprises a recovery device for recovering waste gas and waste liquid.
The beneficial effects are that: compared with the prior art, the system provided by the utility model comprises the sampling module, the preprocessing module and the detection and analysis module, pipelines in the three modules can be integrated to be arranged into a box-type structure, so that the application of the system is convenient, a monitoring cabin for chemical waste gas can be constructed, the detection requirements under different environments and different scenes can be realized, and the system is operable and high in mobility.
Drawings
Fig. 1 is a schematic diagram of the system of the present utility model.
Detailed Description
The utility model provides a chemical waste liquid monitoring and analyzing system, and specifically introduces a technical scheme provided by the utility model in combination with FIG. 1.
The system firstly collects liquid samples through a sampling module, samples are collected through a three-piece ball valve with a cutting function on a chemical waste liquid pipeline 1, the sampling module comprises a liquid large loop formed by two pipelines, namely a sample injection pipeline and a return pipeline, the sample injection pipeline is specifically connected to a liquid inlet 4 of a pretreatment module (the pretreatment module is packaged in a box form, the pretreatment box in the drawing) and the return pipeline is connected to a liquid outlet 5 on the pretreatment module, at least one ball valve 2 is arranged on each of the two pipelines, and the two pipelines are respectively controlled for the purpose of collecting the module and the pretreatment module, and two ball valves 2 are arranged on each pipeline in FIG. 1 for controlling and cutting off. The liquid inlet 4 and the liquid outlet 5 (the pipe diameter of the pipeline interface B shown in the figure is 3/8') are arranged on the pretreatment box and can be connected and sealed through a flange. For the sampling module, a needle valve 3 is connected in series between the sample line and the return line, thereby achieving intercommunication and serving to regulate the sampling flow rate and the return flow rate.
The pipelines behind the liquid inlet 4 and the liquid outlet 5 are positioned in a pretreatment module, namely in a pretreatment box shown in the figure, the pretreatment box comprises components of a liquid large loop, the pipeline is arranged in front of a self-cleaning filter 7, a sample injection pipeline and a return pipeline are converged in the self-cleaning filter 7, the self-cleaning filter 7 acquires a liquid sample through the sample injection pipeline, redundant chemical waste liquid returns to the chemical waste liquid pipeline 1 through the return pipeline, the liquid sample firstly passes through a ball valve 2 with a shutoff function after entering the pretreatment box, a pressure gauge is arranged on the pipeline, and the pressure gauge 6 is used for observing the sample pressure of the site in real time.
Further, the self-cleaning filter 7 is set as a rotary filter, the liquid sample is conveyed to a pipeline filter 11 for secondary filtration at the rear end after being subjected to primary filtration of the self-cleaning filter 7, a calibration flow path for calibration is arranged on the pipeline, the flow path is connected through a switching valve 9, an interface is arranged on a pretreatment tank, and the flow path is connected with an external standard gas cylinder of the tank for the periodic calibration and calibration of the instrument. The self-cleaning filter for the primary filtering is a filtering valve with a self-cleaning function, a liquid sample flows in from the upper end of the valve, a filter element is arranged in the center of the interior of the valve, the interior of the filter element is connected with a waist outlet of the self-cleaning filter, liquid is filtered by the filter element and simultaneously washes the outer wall of the filter element continuously from top to bottom, the self-cleaning function is achieved, and redundant sample and self-cleaning waste liquid flow to a return pipeline through the lower end of the filter. The liquid sample after multi-stage filtration is finally sent to a gasification valve in a gas chromatograph analyzer to change the liquid phase into the gas phase and complete analysis, the redundant sample is discharged from a chromatographic return flow path, a flowmeter 10 is arranged on the flow path for judging the sample inlet and outlet flow rate of the chromatograph, and a one-way valve 8 is arranged for preventing the sample backflow from affecting the quantitative chromatographic sampling.
The detection and analysis module can be integrated according to the part shown in figure 1, and is connected with a connecting port of a pipeline arranged in a pretreatment box, the chromatograph can be a liquid chromatograph, and comprises a hot air outlet, a recovery device for recovering waste gas and waste liquid, and the waste gas and waste liquid can be connected to a blow-down pipe or an instrument wind main pipe in a chemical plant for treatment through a pipeline interface arranged on a box body at the upper end of the chromatograph shown in figure 1.
Claims (8)
1. The chemical waste liquid monitoring and analyzing system is characterized by comprising a sampling module, a pretreatment module and an analysis and detection module;
The sampling module is used for collecting a liquid sample of the chemical waste liquid;
The pretreatment module is at least provided with two pipeline interfaces for connecting liquid samples, and comprises a liquid inlet pipeline and a liquid outlet pipeline, wherein the two pipelines are mixed in a self-cleaning filter, are conveyed to a pipeline filter for secondary filtration at the rear end after being subjected to primary filtration of the self-cleaning filter, and are provided with a calibration flow path for calibration, and the flow path is connected with a standard gas cylinder; the liquid sample passing through the pipeline filter is conveyed to a detection analysis module for detection;
The detection analysis module comprises a chromatograph, the chromatograph is connected with a sample inlet and a sample outlet, the sample inlet is used for acquiring a liquid sample to be detected, the sample outlet returns the residual liquid sample to the pretreatment module, and a liquid outlet is arranged on the pretreatment module.
2. The chemical waste liquid monitoring and analyzing system according to claim 1, wherein the sampling module comprises a liquid large loop formed by a pipe valve member comprising a needle valve, a one-way valve and a plurality of ball valves, the liquid large loop comprises a sampling pipeline and a return pipeline, the sampling pipeline and the return pipeline are respectively connected with two pipeline interfaces on the pretreatment module, and the needle valve is connected between the sampling pipeline and the return pipeline in series.
3. The system according to claim 1 or 2, wherein the sampling pipe and the return pipe of the sampling module are connected to the chemical waste pipe through three-piece ball valves.
4. The system of claim 1, wherein the self-cleaning filter is a rotary filter.
5. The chemical waste monitoring and analyzing system according to claim 1, wherein the sample liquid passes through a ball valve for controlling the turn-off after entering the pretreatment module, and a pressure gauge is arranged on the pipeline, and the pressure gauge is used for observing the sample pressure of the position of the pressure gauge on the pipeline in real time.
6. The chemical waste liquid monitoring and analyzing system according to claim 1, wherein a one-way valve is arranged on a liquid discharge pipeline of a sample outlet of the chromatograph in the pretreatment module and is used for judging sample inlet and outlet flow of the chromatograph.
7. The chemical waste liquid monitoring and analyzing system according to claim 1, wherein the sampling module, the preprocessing module and the analyzing and detecting module can adopt box-type structures to encapsulate corresponding pipelines, and corresponding pipeline connectors are arranged to realize connection.
8. The chemical waste liquid monitoring and analyzing system according to claim 1, wherein the system comprises a recovery device for recovering waste gas and waste liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323523868.3U CN221506820U (en) | 2023-12-24 | 2023-12-24 | Chemical waste liquid monitoring and analyzing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323523868.3U CN221506820U (en) | 2023-12-24 | 2023-12-24 | Chemical waste liquid monitoring and analyzing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221506820U true CN221506820U (en) | 2024-08-09 |
Family
ID=92122680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323523868.3U Active CN221506820U (en) | 2023-12-24 | 2023-12-24 | Chemical waste liquid monitoring and analyzing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221506820U (en) |
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2023
- 2023-12-24 CN CN202323523868.3U patent/CN221506820U/en active Active
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