CN219122122U - Material sampling analysis system at outlet of fluorination reactor - Google Patents
Material sampling analysis system at outlet of fluorination reactor Download PDFInfo
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- CN219122122U CN219122122U CN202222583995.1U CN202222583995U CN219122122U CN 219122122 U CN219122122 U CN 219122122U CN 202222583995 U CN202222583995 U CN 202222583995U CN 219122122 U CN219122122 U CN 219122122U
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Abstract
The utility model provides a fluorination reactor export material sampling analysis system, including level bottle, flowmeter, gas measuring pipe, three-way valve, alkali absorption bottle, sample air pocket, reactor. The input end of the flowmeter is communicated with the output end of the reactor, and a first valve body and a second valve body are arranged between the flowmeter and the reactor. The input end of the air measuring pipe is communicated with the flowmeter, and a fourth valve body is arranged between the air measuring pipe and the flowmeter. The three-way valve is arranged at the output end of the air measuring pipe. The input end of the alkali absorption bottle is connected with one output port of the three-way valve through a pipeline, and the pipeline is inserted into the absorption liquid of the alkali absorption bottle. The input end of the sampling air bag is connected with the output end of the alkali absorption bottle, and a fifth valve is arranged between the sampling air bag and the alkali absorption bottle. The level bottle is connected with the other output port of the three-way valve. The utility model provides a fluorination reactor export material sampling analysis system can avoid hydrogen fluoride and hydrogen chloride in the material to corrode gas chromatography and influence gas chromatography analysis accuracy.
Description
Technical Field
The utility model relates to the technical field of fluorination reaction, in particular to a material sampling analysis system at an outlet of a fluorination reactor.
Background
The fluorination reaction mainly refers to substitution reaction of chlorinated alkane such as methylene dichloride, trichloromethane and chloroethane with hydrogen fluoride under the action of a catalyst, fluorine is substituted for chlorine in the chlorinated alkane to generate fluorinated alkane and hydrogen chloride, the detection of the composition of the outlet material of the reactor is of great significance for guiding the reaction, the detection of the composition of the material adopts a gas chromatography analysis method, and since the outlet material of the reactor contains hydrogen chloride and hydrogen fluoride, if the direct sampling analysis is carried out, the hydrogen fluoride and the hydrogen chloride in the material corrode the gas chromatography, and the existence of the hydrogen fluoride and the hydrogen chloride also influences the accuracy of the gas chromatography analysis.
Disclosure of Invention
The utility model aims to provide a sampling analysis system for materials at the outlet of a fluorination reactor, which is used for solving the technical problems that hydrogen fluoride and hydrogen chloride in the materials corrode gas chromatography and influence the analysis accuracy of the gas chromatography when the materials at the outlet of the fluorination reactor are directly sampled and analyzed in the prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme: there is provided a fluorination reactor outlet material sampling analysis system comprising:
a reactor;
the input end of the flowmeter is communicated with the output end of the reactor, and a first valve body and a second valve body are arranged between the flowmeter and the reactor;
the input end of the tail gas absorption system is communicated with the output end of the flowmeter, and a third valve body is arranged between the tail gas absorption system and the flowmeter;
the air measuring pipe is communicated with the flowmeter at the input end, and a fourth valve body is arranged between the air measuring pipe and the flowmeter;
the three-way valve is arranged at the output end of the air measuring pipe;
the input end of the alkali absorption bottle is connected with one output port of the three-way valve through a pipeline, the pipeline is inserted into the absorption liquid of the alkali absorption bottle, the output end of the alkali absorption bottle is communicated with the tail gas absorption system, and a sixth valve and a check valve are arranged between the alkali absorption bottle and the tail gas absorption system;
the input end of the sampling air bag is connected with the output end of the alkali absorption bottle, and a fifth valve is arranged between the sampling air bag and the alkali absorption bottle;
and the level bottle is connected with the other output port of the three-way valve.
In one embodiment, the first valve body is a ball valve, and the second valve body, the third valve body, the fourth valve body, the fifth valve body and the sixth valve body are needle valves.
In one embodiment, the flow meter is a float flow meter.
In one embodiment, the gas measuring tube is a positive pressure gas measuring tube.
In one embodiment, the inlet ends of the air measuring pipes are all provided with valves.
In one embodiment, the alkali absorption bottle is filled with 10% sodium hydroxide solution.
The above-mentioned one or more technical solutions in the embodiments of the present utility model at least have the following technical effects or advantages:
according to the material sampling analysis system for the outlet of the fluorination reactor, the outlet of the fluorination reactor is connected with the flowmeter through the first valve body and the second valve body, the pipeline behind the flowmeter is divided into two paths, one path is connected with the tail gas absorbing device through the third valve body, the other path is connected with the gas measuring pipe through the fourth valve body, the inlet end of the gas measuring pipe is provided with the inlet valve, the outlet end is provided with the three-way valve, one side of the outlet end is connected with the level bottle, deionized water is filled in the level bottle, the other side is connected with the alkali absorbing bottle, 10% sodium hydroxide solution is filled in the alkali absorbing bottle, the inlet of the alkali absorbing bottle is an inserting pipe, the 10% sodium hydroxide solution is inserted in the alkali absorbing bottle, and the outlet is arranged at the top of the absorbing bottle. The outlet pipeline of the alkali absorption bottle is divided into two paths, one path is connected with the tail gas absorption device through a sixth valve body and a check valve (the check valve is used for preventing gas in the tail gas absorption system from entering the sampling air bag along the sixth valve body and the fifth valve body), and the other path is connected with the sampling air bag through the fifth valve body. The gas materials entering the sampling air bag are firstly cleaned by the alkali absorption bottle, so that acidic hydrogen fluoride and hydrogen chloride in the gas materials are absorbed and removed, and further, the corrosion of the hydrogen fluoride and the hydrogen chloride in the materials to gas chromatography is avoided, and the analysis accuracy of the gas chromatography is influenced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a sample analysis system for materials at the outlet of a fluorination reactor according to an embodiment of the present utility model.
Wherein, each reference sign is as follows:
1. a reactor; 2. a flow meter; 3. an exhaust gas absorption system; 4. a gas measuring pipe; 5. a three-way valve; 6. an alkali absorption bottle; 7. sampling the air bag; 8. a level bottle; 91. a first valve body; 92. a second valve body; 93. a third valve body; 94. a fourth valve body; 95. a fifth valve body; 96. a sixth valve body; 97. a check valve.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.
In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Referring to fig. 1, an embodiment of the present application provides a material sampling analysis system at an outlet of a fluorination reactor 1, which includes a reactor 1, a flowmeter 2, a tail gas absorption system 2, a level bottle 8, a three-way valve 5, an alkali absorption bottle 6, a sampling air bag 7, and a gas measuring tube 4. The input end of the flowmeter 2 is communicated with the output end of the reactor 1, and a first valve body 91 and a second valve body 92 are arranged between the flowmeter 2 and the reactor 1. The input end of the gas absorption system is communicated with the output end of the flowmeter 2, and a third valve body 93 is arranged between the tail gas absorption system 2 and the flowmeter 2. The input end of the air measuring pipe 4 is communicated with the flowmeter 2, and a fourth valve body 94 is arranged between the air measuring pipe 4 and the flowmeter 2. The three-way valve 5 is arranged at the output end of the air measuring pipe 4. The input of alkali absorption bottle 6 links to each other with an delivery outlet of three-way valve 5 through the pipeline, and this pipeline inserts in the absorption liquid of alkali absorption bottle 6, and the output of alkali absorption bottle 6 is linked to each other with tail gas absorption system 2, and is provided with sixth valve and check valve 97 between alkali absorption bottle 6 and the tail gas absorption system 2. The input end of the sampling air bag 7 is connected with the output end of the alkali absorption bottle 6, and a fifth valve is arranged between the sampling air bag 7 and the alkali absorption bottle 6. The level bottle 8 is connected with the other output port of the three-way valve 5.
According to the material sampling analysis system at the outlet of the fluorination reactor 1, the outlet of the fluorination reactor 1 is connected with the flowmeter 2 through the first valve body 91 and the second valve body 92, the pipeline behind the flowmeter 2 is divided into two paths, one path is connected with the tail gas absorbing device through the third valve body 93, the other path is connected with the gas measuring pipe 4 through the fourth valve body 94, the inlet end of the gas measuring pipe 4 is provided with the inlet valve, the outlet end is provided with the three-way valve 5, one side of the outlet end is connected with the level bottle 8, deionized water is filled in the level bottle 8, the other side is connected with the alkali absorbing bottle 6, 10% sodium hydroxide solution is filled in the alkali absorbing bottle 6, the inlet of the alkali absorbing bottle 6 is an insertion pipe, the 10% sodium hydroxide solution is inserted in the outlet is arranged at the top of the absorbing bottle. The outlet pipeline of the alkali absorption bottle 6 is divided into two paths, one path is connected with the tail gas absorption device through a sixth valve body 96 and a check valve 97 (the check valve 97 is used for preventing gas in the tail gas absorption system 2 from entering the sampling gas bag 7 along the sixth valve body 96 and the fifth valve body 95), and the other path is connected with the sampling gas bag 7 through the fifth valve body 95. The gas materials entering the sampling air bag 7 are firstly cleaned by the alkali absorption bottle 6, so that acidic hydrogen fluoride and hydrogen chloride in the gas materials are absorbed and removed, and further, the corrosion of the hydrogen fluoride and the hydrogen chloride in the materials to the gas chromatography is avoided, and the analysis accuracy of the gas chromatography is influenced.
In one embodiment, the first valve body 91 is a ball valve, and the second valve body 92, the third valve body 93, the fourth valve body 94, the fifth valve body 95, and the sixth valve body 96 are needle valves.
In one embodiment, the flow meter 2 is a float flow meter 2.
In one embodiment, the gas metering tube 4 is a positive pressure gas metering tube 4.
In one embodiment, the inlet ends of the air metering tubes 4 are each provided with a valve.
In one embodiment, the alkali absorption bottle 6 is filled with 10% sodium hydroxide solution.
Example 1:
before sampling, firstly checking that all valve bodies in the system are in a closed state, opening an inlet valve of the positive pressure air pipe 4, and screwing an outlet three-way valve 5 of the positive pressure air pipe 4 to a communicated alkali absorption bottle 6. The sixth valve body 96, the third valve body 93 and the first valve body 91 are opened, the second valve body 92 is slowly opened, the flow rate displayed by the flowmeter 2 is adjusted to be 500mL/min, then the fourth valve body 94 is opened, the third valve body 93 is closed, after five minutes of circulation, the fifth valve body 95 is opened, a gas sample is filled in the sampling gas bag 7, then the fifth valve body 95 is closed, the fourth valve body 94 is quickly closed, the third valve body 93 is opened, the inlet and outlet valves of the air measuring pipe 4 are closed, then the three-way valve 5 at the outlet of the positive pressure air measuring pipe 4 is screwed into the level bottle 8 to be communicated, the level bottle 8 is lifted, water in the level bottle 8 is pressed into the air measuring pipe 4, water-soluble gas in the air measuring pipe 4 is dissolved in water, and the residual gas volume in the level bottle 8 is observed, so that the content of water-soluble hydrogen fluoride and hydrogen chloride can be analyzed.
The fluoride reactor 1 outlet material sampling analysis system provided by the application has at least the following advantages:
1. the sample collected by the analysis sampling system does not contain hydrogen chloride and hydrogen fluoride, can not corrode gas chromatography, and can not influence the accuracy of an analysis result.
2. The analysis sampling system can analyze the water-soluble hydrogen chloride and the content of hydrogen fluoride in the sample at the same time of sampling.
3. The float flowmeter 2 is arranged at the inlet of the analysis sampling system, so that the gas flow can be controlled according to the requirement, and the material injury caused by overlarge flow in the sampling process is avoided.
4. All tail gases are discharged into the tail gas absorption system 2 in the sampling process, so that the tail gases are prevented from being directly discharged into the atmosphere to pollute the environment.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (6)
1. A fluorination reactor outlet material sampling analysis system, comprising:
a reactor;
the input end of the flowmeter is communicated with the output end of the reactor, and a first valve body and a second valve body are arranged between the flowmeter and the reactor;
the input end of the tail gas absorption system is communicated with the output end of the flowmeter, and a third valve body is arranged between the tail gas absorption system and the flowmeter;
the air measuring pipe is communicated with the flowmeter at the input end, and a fourth valve body is arranged between the air measuring pipe and the flowmeter;
the three-way valve is arranged at the output end of the air measuring pipe;
the input end of the alkali absorption bottle is connected with one output port of the three-way valve through a pipeline, the pipeline is inserted into the absorption liquid of the alkali absorption bottle, the output end of the alkali absorption bottle is communicated with the tail gas absorption system, and a sixth valve and a check valve are arranged between the alkali absorption bottle and the tail gas absorption system;
the input end of the sampling air bag is connected with the output end of the alkali absorption bottle, and a fifth valve is arranged between the sampling air bag and the alkali absorption bottle;
and the level bottle is connected with the other output port of the three-way valve.
2. A fluorination reactor outlet material sampling analysis system of claim 1, wherein:
the first valve body is a ball valve, and the second valve body, the third valve body, the fourth valve body, the fifth valve body and the sixth valve body are needle valves.
3. A fluorination reactor outlet material sampling analysis system of claim 1, wherein:
the flowmeter is a float flowmeter.
4. A fluorination reactor outlet material sampling analysis system of claim 1, wherein:
the air measuring pipe is a positive pressure air measuring pipe.
5. A fluorination reactor outlet material sampling analysis system of claim 1, wherein:
the inlet ends of the air measuring pipes are provided with valves.
6. A fluorination reactor outlet material sampling analysis system of claim 1, wherein:
the alkali absorption bottle is filled with 10% sodium hydroxide solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222583995.1U CN219122122U (en) | 2022-09-28 | 2022-09-28 | Material sampling analysis system at outlet of fluorination reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222583995.1U CN219122122U (en) | 2022-09-28 | 2022-09-28 | Material sampling analysis system at outlet of fluorination reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219122122U true CN219122122U (en) | 2023-06-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222583995.1U Active CN219122122U (en) | 2022-09-28 | 2022-09-28 | Material sampling analysis system at outlet of fluorination reactor |
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| Country | Link |
|---|---|
| CN (1) | CN219122122U (en) |
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2022
- 2022-09-28 CN CN202222583995.1U patent/CN219122122U/en active Active
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