CN219179317U - Device for measuring carbon dioxide absorption stability of organic amine liquid - Google Patents
Device for measuring carbon dioxide absorption stability of organic amine liquid Download PDFInfo
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- CN219179317U CN219179317U CN202223595210.9U CN202223595210U CN219179317U CN 219179317 U CN219179317 U CN 219179317U CN 202223595210 U CN202223595210 U CN 202223595210U CN 219179317 U CN219179317 U CN 219179317U
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- organic amine
- amine liquid
- carbon dioxide
- reaction kettle
- dioxide absorption
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Abstract
The utility model discloses a device for measuring carbon dioxide absorption stability of organic amine liquid, which comprises: the device comprises a carbon dioxide supply device, a reaction kettle, an organic amine liquid treatment device and a gas chromatography-mass spectrometer which are sequentially communicated, wherein the reaction kettle is internally provided with an organic amine liquid with the amine content of a preset value, and is provided with a heating desorption channel; the organic amine liquid treatment device cools and dilutes the desorbed organic amine liquid discharged from the reaction kettle; the gas chromatography mass spectrometer can measure the amine content in the diluted organic amine liquid. The reaction kettle is communicated with a gas chromatography-mass spectrometer, and the content of amine in the organic amine liquid after adsorption-desorption is measured through the gas chromatography-mass spectrometer, so that the amine loss rate of the organic amine liquid in a cycle period is determined, and the carbon dioxide absorption stability of the organic amine liquid is detected.
Description
Technical Field
The utility model relates to the technical field of industrial carbon absorption, in particular to a device for measuring carbon dioxide absorption stability of organic amine liquid.
Background
Carbon Capture, utilization and sequestration (CCUS) technology is one of the key technologies for coping with global climate change, and Capture of Carbon dioxide is the most important among the CCUS technologies.
At present, the chemical absorption method is the most applied process technology in the carbon dioxide capturing method, and is widely applied due to the strong adsorption force of the organic amine liquid.
The organic amine liquid needs to be subjected to a recycling process of absorption and high-temperature desorption in industrial application, so that the recycling stability of the organic amine liquid is an important factor for judging whether the organic amine liquid can be used in industry, and the CO of the amine liquid in the recycling stability 2 The cyclic loading and the amount of amine liquid lost are two important parameters.
Therefore, it is necessary to design a device for measuring the carbon dioxide absorption stability of the organic amine solution, which is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present utility model provides a device for measuring carbon dioxide absorption stability of an organic amine liquid, which is used for detecting carbon dioxide absorption stability of an organic amine liquid.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
an apparatus for measuring carbon dioxide absorption stability of an organic amine liquid, comprising: a carbon dioxide supply device, a reaction kettle, an organic amine liquid treatment device and a gas chromatography-mass spectrometer which are communicated in sequence,
wherein, the reaction kettle contains organic amine liquid with the amine content of a preset value, and is provided with a heating desorption channel;
the organic amine liquid treatment device cools and dilutes the desorbed organic amine liquid discharged from the reaction kettle;
the gas chromatography-mass spectrometer can measure the amine content in the diluted organic amine liquid.
Preferably, in the above device for measuring carbon dioxide absorption stability of an organic amine liquid, the organic amine liquid treatment device includes: a cooler and a dilution assembly are provided,
the cooler is communicated with the reaction kettle and the dilution assembly, and the dilution assembly is communicated with the organic amine liquid treatment device.
Preferably, the device for measuring carbon dioxide absorption stability of organic amine liquid further comprises:
the temperature detection device is used for detecting the temperature value in the reaction kettle;
and the pressure detection device is used for detecting the pressure value in the reaction kettle.
Preferably, the device for measuring carbon dioxide absorption stability of organic amine liquid further comprises:
the control system is connected with the temperature detection device and the pressure detection device and can acquire the temperature value detected by the temperature detection device and the pressure value detected by the pressure detection device;
the control system is connected with the control terminal, and the control terminal is pre-stored with a calculation formula of the load capacity of the organic amine liquid on the carbon dioxide.
Preferably, the device for measuring carbon dioxide absorption stability of organic amine liquid further comprises:
and the control device is used for controlling the on-off of the carbon dioxide supply device and the reaction kettle, and is connected with the control system.
Preferably, in the device for measuring carbon dioxide absorption stability of organic amine liquid, the control device is an on-off valve.
The utility model provides a device for measuring the carbon dioxide absorption stability of an organic amine liquid, which is used for determining the amine loss rate of the organic amine liquid in a cycle period and detecting the carbon dioxide absorption stability of the organic amine liquid by communicating a reaction kettle with a gas chromatography-mass spectrometer and measuring the amine content in the organic amine liquid after adsorption-desorption through the gas chromatography-mass spectrometer.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an apparatus for measuring carbon dioxide absorption stability of an organic amine liquid disclosed in an embodiment of the present utility model.
Detailed Description
The utility model discloses a device for measuring carbon dioxide absorption stability of an organic amine liquid, which is used for detecting the carbon dioxide absorption stability of the organic amine liquid.
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying 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.
Carbon Capture, utilization and sequestration (CCUS) technology is one of the key technologies for coping with global climate change, and Capture of Carbon dioxide is the most important among the CCUS technologies.
At present, the chemical absorption method is the most applied process technology in the carbon dioxide capturing method, and is widely applied due to the strong adsorption force of the organic amine liquid.
The organic amine liquid needs to be subjected to a recycling process of absorption and high-temperature desorption in industrial application, so that the recycling stability of the organic amine liquid is an important factor for judging whether the organic amine liquid can be used in industry, and the CO of the amine liquid in the recycling stability 2 The cyclic loading and the amount of amine liquid lost are two important parameters.
Based on the above problems, disclosed herein is an apparatus for measuring carbon dioxide absorption stability of an organic amine liquid, comprising: a carbon dioxide supply device 1, a reaction kettle 3, a first heater 4, a cooler 9, a dilution assembly 10 and a gas chromatography mass spectrometer 11.
The carbon dioxide supply device 1 is communicated with the inlet of the reaction kettle 3, and the outlet of the reaction kettle 3 is sequentially communicated with the cooler 9, the dilution assembly 10 and the gas chromatography-mass spectrometer 11 through a first pipeline.
In some embodiments, the reaction kettle 3 is a high-temperature high-pressure reaction kettle, and the reaction kettle 3 contains an organic amine solution with a preset amine solution content in advance so as to absorb carbon dioxide. The organic amine liquid herein is a mixed solution containing an amine liquid and water.
In order to ensure that the carbon dioxide in the carbon dioxide supply device 1 can smoothly enter the high-pressure reaction kettle 3, a driving pump can be additionally arranged on the second pipeline in some embodiments.
After carbon dioxide enters the reaction kettle 3, the organic amine liquid in the reaction kettle 3 absorbs the carbon dioxide through gas-liquid equilibrium reaction, a circulating desorption device switch (not shown in the figure) of the reaction kettle 3 is opened after the absorption is completed, the organic amine liquid in the reaction kettle 3 is pumped to the heater 4 for circulating desorption, and the desorbed organic amine liquid is conveyed back into the reaction kettle 3.
In some embodiments, the heating temperature of the heater 4 is 110 ℃ to 130 ℃, optionally 120 ℃.
And carrying out absorption experiments of a second cycle period after all the organic amine liquid is desorbed.
In addition, since the organic amine liquid undergoes degradation reaction when heated, the desorbed organic amine liquid has amine loss. In order to determine the amine loss of the desorbed organic amine liquid, in this embodiment, a certain amount of the desorbed organic amine liquid is discharged into the cooler 9 via the first line to be cooled until the temperature of the organic amine liquid returns to room temperature. The cooled organic amine liquid enters the dilution unit 10 through the first pipe, and the organic amine liquid is diluted, and the dilution ratio is not limited herein.
The amine liquid in the organic amine liquid does not affect the concentration due to the temperature change.
The diluted organic amine liquid is injected into the gas chromatography-mass spectrometer 11 through a first pipeline, and the content of amine in the diluted organic amine liquid is measured through the gas chromatography-mass spectrometer 11. And (3) reversely pushing out the amine content in the organic amine liquid before dilution according to the set dilution ratio.
The amine loss rate of the organic amine liquid in one cycle period is determined by comparing the amine content of the organic amine liquid measured by the gas chromatography mass spectrometer 11 with the amine content of the organic amine liquid prepared to have a preset value.
In summary, the reaction kettle 3 is communicated with the gas chromatography-mass spectrometer 11, and the gas chromatography-mass spectrometer 11 is used for measuring the amine content in the organic amine liquid after adsorption-desorption, so that the amine loss rate of the organic amine liquid in one cycle period is determined.
In addition, the device in the application can also measure the loading amount of the organic amine liquid in the reaction kettle 3 to carbon dioxide in the cycle process of absorption and desorption.
Specifically, in this embodiment, the amount of the organic amine liquid to be carried out on carbon dioxide can be measured based on the pressure change in the reaction vessel 3.
In view of this, the device for measuring carbon dioxide absorption stability of an organic amine liquid in the present application further comprises a control device 2, a pressure sensor 5, a temperature sensor 6, a control system 7 and a control terminal 8.
Wherein, pressure sensor 5 is used for detecting the pressure value in reation kettle 3, and temperature sensor 6 is used for detecting the temperature value in the reation kettle, and pressure sensor 5 and temperature sensor 6 are all connected with control system 7, and control system 7 is connected with control terminal 8.
Before injecting carbon dioxide into the reaction kettle 3, the reaction kettle 3 needs to be vacuumized to ensure that no residual air exists in the reaction kettle 3, thereby ensuring the accuracy of measuring the carbon dioxide loading amount of the organic amine liquid.
The control device 2 can control the amount of carbon dioxide injected into the reaction vessel 3 by the carbon dioxide supply device 1. In some embodiments, the control device 2 may be a control valve disposed on a second pipeline that connects the carbon dioxide supply device 1 and the reaction kettle 3, and the on-off of the second pipeline is controlled by the on-off of the control valve.
The control device 2 is connected to the control system 7, and the state of the control device 2 can be uploaded to the control system 7, and the control system 7 can issue instructions to control the above-mentioned change of the state of the control device 2 according to the requirement.
The carbon dioxide supply device 1 injects carbon dioxide into the reaction vessel 3, and causes a change in pressure and temperature in the reaction vessel 3.
The temperature sensor 6 detects the temperature in the reaction vessel 3, and the detected temperature value can be uploaded to the control system 7.
The control system 7 uploads the obtained pressure value of the preset quantity and the corresponding temperature value to the control terminal 8, and the following calculation formula is pre-stored in the control terminal 8:
the temperature value and the pressure value before and after carbon dioxide is introduced into the reaction kettle 3 are detected by the temperature sensor 6 and the pressure sensor 5, and the CO entering the reaction kettle can be calculated according to an ideal gas state equation, namely the formula (1), by utilizing the volume of the gas chamber 2 Molar mass n of (2) CO2 ：
Formula (1):
wherein P is 0 Is the pressure value in the reaction kettle after carbon dioxide injection, T 0 Is the temperature value of the reaction kettle after carbon dioxide injection, V G R is the volume constant of molar gas, which is the volume of gas phase in the reaction kettle.
P as described above 0 Can be measured by a pressure sensor 5, T 0 Can be measured by a temperature sensor 6, and V G Can be calculated according to formula (2):
formula (2): v (V) G ＝V tank -V L Wherein V is tank V is the volume of the reaction kettle L Is the volume of the organic solution in the reaction kettle.
According to the gas phase volume V of the reaction kettle G And experimental temperature T 0 From the ideal gas state equation, equation (3), the molar amount n of the substance of carbon dioxide in the gas phase can be calculated G ，
Equation (3):
according to the law of conservation of mass, the CO absorbed by the organic amine liquid can be calculated by combining the formula (4) 2 Molar mass n of (2) L : equation (4):
according to the obtained CO absorbed by the organic amine liquid 2 Molar mass n of (2) L Calculating to obtain the load alpha of the organic amine liquid to the carbon dioxide by combining the formula (5) CO2 ，
Equation (5):
wherein n is amine Is the molar amount of amine liquid in the organic amine liquid.
Thus, by providing the above-described pressure sensor 5, temperature sensor 6, control system 7 and control terminal 8, the amount of load of the organic amine liquid to carbon dioxide can be obtained.
By the device for measuring the carbon dioxide absorption stability of the organic amine liquid, the carbon dioxide absorption stability of the organic amine liquid can be detected.
As used in the specification and in the claims, the terms "a," "an," "the," and/or "the" are not specific to a singular, but may include a plurality, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The inclusion of an element defined by the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises an element.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. An apparatus for measuring carbon dioxide absorption stability of an organic amine liquid, comprising: a carbon dioxide supply device, a reaction kettle, an organic amine liquid treatment device and a gas chromatography-mass spectrometer which are communicated in sequence,
wherein, the reaction kettle contains organic amine liquid with the amine content of a preset value, and is provided with a heating desorption channel;
the organic amine liquid treatment device cools and dilutes the desorbed organic amine liquid discharged from the reaction kettle;
the gas chromatography-mass spectrometer can measure the amine content in the diluted organic amine liquid.
2. The apparatus for measuring carbon dioxide absorption stability of an organic amine liquid according to claim 1, wherein the organic amine liquid treatment apparatus comprises: a cooler and a dilution assembly are provided,
the cooler is communicated with the reaction kettle and the dilution assembly, and the dilution assembly is communicated with the organic amine liquid treatment device.
3. The apparatus for measuring carbon dioxide absorption stability of an organic amine liquid according to claim 1, further comprising:
the temperature detection device is used for detecting the temperature value in the reaction kettle;
and the pressure detection device is used for detecting the pressure value in the reaction kettle.
4. The apparatus for measuring carbon dioxide absorption stability of an organic amine liquid according to claim 3, further comprising:
the control system is connected with the temperature detection device and the pressure detection device and can acquire the temperature value detected by the temperature detection device and the pressure value detected by the pressure detection device;
the control system is connected with the control terminal, and the control terminal is pre-stored with a calculation formula of the load capacity of the organic amine liquid on the carbon dioxide.
5. The apparatus for measuring carbon dioxide absorption stability of an organic amine liquid according to claim 4, further comprising:
and the control device is used for controlling the on-off of the carbon dioxide supply device and the reaction kettle, and is connected with the control system.
6. The apparatus for measuring carbon dioxide absorption stability of an organic amine liquid according to claim 5, wherein the control means is an on-off valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202223595210.9U CN219179317U (en) | 2022-12-29 | 2022-12-29 | Device for measuring carbon dioxide absorption stability of organic amine liquid |
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| CN202223595210.9U CN219179317U (en) | 2022-12-29 | 2022-12-29 | Device for measuring carbon dioxide absorption stability of organic amine liquid |
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