Gas phase amine liquid loss monitoring device and system

Abstract

The application relates to a gas-phase amine liquid loss monitoring device and system, which comprises a gas-phase amine liquid monitoring unit, a control unit and a special processing unit. The gas-phase amine liquid monitoring unit comprises a plurality of gas-sensitive elements which are used for monitoring the data of organic amine volatile gas in the gas phase in real time. The gas-sensitive elements are made of a multi-metal composite oxide material, and the gas-sensitive elements made of the multi-metal composite oxide material have high selective gas-sensitive characteristics for the organic amine volatile gas. The control unit is connected with the gas-phase amine liquid monitoring unit and is used for receiving the data transmitted by the gas-phase amine liquid monitoring unit. The special processing unit is connected with the control unit and is used for controlling the opening of a special sub-processing unit according to the data received by the control unit. The application can control the opening of the special sub-processing unit according to the data received by the control unit, and provides reliable data support for concentration judgment, cost control and other parameter optimization of a carbon capture system.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of carbon capture, in particular to a gas phase amine liquid loss monitoring device and system. BACKGROUND

[0002] With the increasing global climate change, reducing greenhouse gas emissions has become a global urgent task. Carbon capture and storage technology as an important carbon dioxide emission reduction technology has attracted much attention, and it has wide application prospects in the fields of industry, energy, etc. In the carbon capture process, amine liquid as a common absorbent plays a key role and has been widely used in industrial carbon capture facilities.

[0003] However, the traditional amine liquid monitoring system has many problems. The traditional system only relies on simple detection of gas volume, temperature, pressure and other parameters. This monitoring method has the disadvantages of low precision and poor real-time performance. More seriously, amine liquid is easily damaged during operation, and the traditional system cannot effectively monitor the amine loss in the gas phase, which leads to inaccurate measurement of amine liquid loss and cannot realize accurate cost control and calculation. In addition, the traditional system is inconvenient to operate, and usually the operator can only rely on the overall liquid level and concentration to supplement liquid or water, which easily leads to system concentration fluctuation and affects the carbon capture efficiency.

[0004] To solve the above problems, it is particularly necessary to introduce an intelligent detection system. The intelligent detection system can monitor the loss of amine liquid in the gas phase in real time, and provide reliable data support for concentration judgment, cost control and other parameter optimization of the whole system. SUMMARY

[0005] The main purpose of the present application is to overcome the defects of the existing gas phase amine liquid loss monitoring device, and to provide a new gas phase amine liquid loss monitoring device and system, and to solve the technical problem of monitoring the loss of amine liquid in the gas phase in real time, and to provide reliable data support for concentration judgment, cost control and other parameter optimization of the whole system, so as to be more suitable for practical application and have industrial utilization value.

[0006] The purpose of the present application and the solution to its technical problems are realized by adopting the following technical scheme. According to the present application.

[0007] The present application has obvious advantages and beneficial effects compared with the prior art. As can be seen from the above technical scheme, in order to achieve the aforementioned application purposes, the main technical contents of the present application are as follows:

[0008] The present application provides a gas phase amine liquid loss monitoring device, comprising:

[0009] The gas-phase amine liquid monitoring unit comprises a plurality of gas sensors for monitoring the data of the organic amine volatile gas in the gas phase in real time, wherein the gas sensors are made of a multi-metal composite oxide material, and the gas sensors made of the multi-metal composite oxide material have high selective gas sensing characteristics for the organic amine volatile gas.

[0010] The control unit is connected with the gas-phase amine liquid monitoring unit and is used for receiving the data transmitted by the gas-phase amine liquid monitoring unit.

[0011] The special processing unit is connected with the control unit and is used for controlling the start of the special sub-processing unit according to the data received by the control unit.

[0012] In an optional embodiment, a microprocessor is arranged in the gas sensor, and the microprocessor is used for filtering, amplifying and digitizing the monitored data of the organic amine volatile gas.

[0013] In an optional embodiment, a carbon capture system is further arranged, which is connected with the gas-phase amine liquid monitoring unit and is used for capturing carbon dioxide.

[0014] In an optional embodiment, the special processing device comprises an adsorption unit, a regeneration unit and a cooling unit,

[0015] The gas inlet of the adsorption unit is connected with the gas-phase outlet of the carbon capture system, and the adsorption unit is used for adsorbing the organic amine in the gas phase.

[0016] The regeneration unit is connected with the adsorbent outlet and inlet of the adsorption unit through a pipeline, and when the adsorbent is saturated, the regeneration unit performs regeneration treatment on the adsorbent and recycles the adsorbent.

[0017] The cooling unit is connected with the regeneration unit, and the cooling unit is used for cooling the regenerated adsorbent and restoring the adsorbent to the working temperature.

[0018] In an optional embodiment, the regeneration unit performs regeneration treatment on the adsorbent by means of hot air purging or steam desorption and recycles the adsorbent.

[0019] In an optional embodiment, the control unit comprises a data preprocessing module.

[0020] The data preprocessing module is used for obtaining the average value of the organic amine concentration and processing the average value of the organic amine concentration by means of an outlier elimination algorithm and a weighted average algorithm.

[0021] In an optional embodiment, the control unit further comprises a process parameter adjustment module.

[0022] The process parameter adjustment module is used to adjust the rotation speed of the amine liquid circulation pump, the temperature and pressure of the absorption tower under different organic amine concentration threshold conditions based on the average organic amine concentration and the carbon capture process model.

[0023] In an optional embodiment, the control unit further includes a temperature sensor, and the temperature sensor is used to obtain the temperature of the absorption tower.

[0024] In an optional embodiment, the control unit further includes a pressure sensor, and the pressure sensor is used to obtain the pressure of the absorption tower.

[0025] On the other hand, a gas-phase amine liquid loss monitoring system is also provided, comprising any of the gas-phase amine liquid loss monitoring devices described above.

[0026] By means of the above technical solution, the present invention (name) has at least the following advantages:

[0027] The gas-phase amine liquid loss monitoring device provided in the embodiment of the present invention utilizes a gas-sensitive element made of a multi-metal composite oxide material. By introducing a multi-metal composite oxide, the sensitivity of the multi-metal oxide material is improved by utilizing the heterojunction effect between the multi-metal and the oxide, and a gas-sensitive element with high selectivity for organic amine volatile gases is obtained by compounding the multi-metal oxide material. The embodiment of the present invention can monitor the data of organic amine volatile gases in the gas phase in real time through the gas-phase amine liquid monitoring unit, and the monitoring results are accurate. The control unit is connected to the gas-phase amine liquid monitoring unit and can receive data transmitted by the gas-phase amine liquid monitoring unit. The special processing unit is connected to the control unit and can control the opening of the special sub-processing unit according to the data received by the control unit, providing reliable data support for concentration judgment, cost control and other parameter optimization of the carbon capture system.

[0028] In summary, the unique gas-phase amine liquid loss monitoring device and system of the present invention can control the activation of specific sub-processing units based on data received by the control unit, providing reliable data support for concentration determination, cost control, and other parameter optimization of the carbon capture system. This device possesses the aforementioned numerous advantages and practical value, and is truly innovative, as no similar designs have been publicly published or used in similar gas-phase amine liquid loss monitoring devices. It offers significant improvements both in terms of device design and functionality, a significant technological advancement, and produces user-friendly and practical results. Furthermore, it offers multiple enhanced functions compared to existing gas-phase amine liquid loss monitoring devices, making it more practical and potentially broadly applicable across the industry. This truly represents a novel, progressive, and practical design.

[0029] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application and can be implemented according to the content of the specification, the following is a preferred embodiment of the present application and the accompanying drawings are described in detail as follows.

[0030] The specific gas phase amine liquid loss monitoring device of the present application is given in detail by the following embodiments and their accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 The appearance schematic diagram of the gas phase amine liquid monitoring device provided for the embodiment of the present application.

[0032] Figure 2 The structure block diagram of the gas phase amine liquid monitoring device provided for the embodiment of the present application.

[0033] Figure 3 The appearance schematic diagram of the data detected by the gas phase amine liquid monitoring device provided for the embodiment of the present application.

[0034] Figure 4 The structure schematic diagram of the integrated special processing unit provided for the embodiment of the present application.

[0035] REFERENCE NUMERALS:

[0036] 100-gas phase amine liquid loss monitoring device, 101-gas phase amine liquid monitoring unit, 102-control unit, 103-special processing unit. DETAILED DESCRIPTION

[0037] In order to further illustrate the technical means and effects taken by the present application to achieve the predetermined invention purpose, the following combines the drawings and the preferred embodiment, and the specific implementation, method, manufacturing method, processing method, steps, structure, features and effects of the (name) according to the present application are described in detail as follows.

[0038] Please refer to Figures 1 to 4 The gas phase amine liquid loss monitoring device 100 of the preferred embodiment of the present application includes: a gas phase amine liquid monitoring unit 101, a control unit 102 and a special processing unit 103. Among them, the gas phase amine liquid monitoring unit 101 includes a plurality of gas sensitive elements, the gas sensitive elements are used to monitor the data of the organic amine volatile gas in the gas phase in real time, wherein the gas sensitive elements are made of a multi-metal composite oxide material, and the gas sensitive elements made of the multi-metal composite oxide material have high selective gas sensitive characteristics for the organic amine volatile gas.

[0039] The control unit 102 is connected with the gas phase amine liquid monitoring unit 101, and is used to receive the data transmitted by the gas phase amine liquid monitoring unit 101.

[0040] The special processing unit 103 is connected with the control unit 102, and is used for controlling the start of the special sub-processing unit according to the data received by the control unit 102.

[0041] The gas-phase amine liquid loss monitoring device 100 provided by the embodiment of the present application utilizes the gas sensitive element made of the multi-metal composite oxide material, introduces the multi-metal composite oxide, utilizes the heterojunction effect between the multi-metal and the oxide to improve the sensitivity of the multi-metal oxide material, and obtains the gas sensitive element with high selectivity to the organic amine volatile gas through the composite of the multi-metal oxide material. The gas-phase amine liquid monitoring unit 101 can monitor the data of the organic amine volatile gas in the gas phase in real time, and the monitoring result is accurate. The control unit 102 is connected with the gas-phase amine liquid monitoring unit 101, and can receive the data transmitted by the gas-phase amine liquid monitoring unit 101. The special processing unit 103 is connected with the control unit 102, and can control the start of the special sub-processing unit according to the data received by the control unit 102, thereby providing reliable data support for the concentration judgment, cost control and other parameter optimization of the carbon capture system.

[0042] The gas-phase amine liquid loss monitoring device 100 provided by the embodiment of the present application will be further explained and described through the optional embodiments.

[0043] The multi-metal composite oxide provided by the embodiment of the present application can be, for example, a spinel structure: MgAl2O4, MnFe2O4, Zn-CoO4. A perovskite structure: CaTiO3, BaTiO3, LiNbO3, SrZrO3, etc. A titanite structure: FeTiO3.

[0044] The heterojunction effect between the multi-metal composite oxide and the oxide adopted by the gas sensitive element prepared by the multi-metal composite oxide material of the embodiment of the present application can significantly improve the sensitivity of the gas sensitive element to the detection of the organic amine volatile gas by optimizing the energy band structure and the electronic transmission characteristics of the material, and can accurately obtain the gas sensitive material with high selectivity to the organic amine volatile gas, and effectively exclude the interference of other gas components on the monitoring result.

[0045] In an optional embodiment, a microprocessor is arranged in the gas sensitive element, and the microprocessor is used for filtering, amplifying and digitizing the data of the monitored organic amine volatile gas.

[0046] The gas-phase amine liquid loss monitoring device 100 provided by the embodiment of the present application is provided with a microprocessor in the gas sensor, the microprocessor is used for filtering, amplifying and digitizing the data of the monitored organic amine volatile gas, so as to enhance the anti-interference ability and data accuracy of the signal, and the gas sensor is connected with a high-precision gas sampling module, the high-precision gas sampling module can accurately collect the sample of the organic amine volatile gas in the gas phase according to a preset sampling strategy, and the gas sensor has a periodic self-calibration function, so that the long-term stable and reliable monitoring performance is ensured.

[0047] In an alternative embodiment, the gas-phase amine liquid loss monitoring device 100 provided by the embodiment of the present application further comprises a carbon capture system, the carbon capture system is connected with the gas-phase amine liquid monitoring unit 101, and the carbon capture system is used for capturing carbon dioxide.

[0048] In an alternative embodiment, the special treatment device comprises an adsorption unit, a regeneration unit and a cooling unit, the gas inlet of the adsorption unit is connected with the gas-phase outlet of the carbon capture system, and the adsorption unit is used for adsorbing the organic amine in the gas phase.

[0049] The regeneration unit is connected with the adsorbent outlet and inlet of the adsorption unit through a pipeline, when the adsorbent is saturated, the regeneration unit performs regeneration treatment on the adsorbent and recycles the adsorbent.

[0050] The cooling unit is connected with the regeneration unit, and the cooling unit is used for cooling the regenerated adsorbent and restoring the adsorbent to the working temperature.

[0051] The special treatment unit 103 can start the corresponding sub-treatment unit according to the instruction of the control unit 102, so as to reduce the concentration of the organic amine volatile gas in the gas phase and the solvent, and further improve the operation efficiency and stability of the carbon capture system.

[0052] In an alternative embodiment, the regeneration unit performs regeneration treatment on the adsorbent by means of hot air purging or steam desorption, and recycles the adsorbent.

[0053] In an alternative embodiment, the control unit 102 comprises a data preprocessing module, the data preprocessing module is used for obtaining the average value of the organic amine concentration, and processing the average value of the organic amine concentration by an outlier rejection algorithm and a weighted average algorithm.

[0054] The control unit 102 provided by the embodiment of the present application has the function of receiving and processing the data from the gas-phase amine liquid monitoring device, and adaptively adjusts the process parameters of the carbon capture facility in real time according to the monitoring data and a preset process parameter adjustment model, and when the monitoring data indicates that the concentration of the organic amine is abnormal, the special treatment device is started to reduce the concentration of the organic amine in the gas phase and the solvent, so as to optimize the carbon capture process.

[0055] The control unit 102 is responsible for receiving and processing data from the gas-phase amine liquid monitoring unit 101. The control unit 102 first performs outlier rejection processing on the received organic amine volatile gas data, identifies and removes data points that deviate significantly from the normal range by comparing with the preset normal data range. Then, a weighted average algorithm is used to process the valid monitoring data within a period of time (for example, ten minutes) to obtain a more accurate average value of the organic amine concentration. According to this average value and the pre-established carbon capture process model, when the average value of the organic amine concentration is higher than a first threshold value (for example, 50 ppm), the speed of the amine liquid circulating pump is moderately reduced to reduce the circulation amount of the amine liquid in the system, thereby reducing the volatilization of the amine liquid in the gas phase; when the average value of the organic amine concentration is higher than a second threshold value (wherein the second threshold value is higher than the first threshold value, and the second threshold value can be 80 ppm), the temperature of the absorption tower is adjusted to reduce the temperature set value to weaken the volatilization trend of the amine liquid; when the average value of the organic amine concentration is higher than a third threshold value (wherein the third threshold value is higher than the second threshold value, and the second threshold value can be 100 ppm), the pressure of the absorption tower is further adjusted to reduce the pressure set value to reduce the gas-phase escape of the amine liquid. And when the organic amine concentration exceeds the set threshold value, the control unit 102 activates a special treatment device to reduce the concentration of organic amine in the gas phase and the solvent.

[0056] In an alternative embodiment, the control unit 102 further comprises a process parameter adjustment module;

[0057] The process parameter adjustment module is used to adjust the speed of the amine liquid circulating pump, the temperature and pressure of the absorption tower based on the average value of the organic amine concentration and the carbon capture process model under different organic amine concentration threshold conditions, thereby forming a circulating treatment loop of the adsorbent and ensuring the continuous and effective operation of the special treatment device.

[0058] In an alternative embodiment, the control unit 102 further comprises a temperature sensor for acquiring the temperature of the absorption tower.

[0059] In an alternative embodiment, the control unit 102 further comprises a pressure sensor for acquiring the pressure of the absorption tower.

[0060] The special processing unit 103 activates the corresponding special sub-processing unit according to the instruction of the control unit 102 to reduce the concentration of the organic amine in the gas phase and the solvent. The adsorption unit is filled with adsorbents with high adsorption capacity and selectivity for organic amine, such as modified activated carbon, molecular sieve, etc., and the gas inlet is connected to the gas phase outlet of the carbon capture system through a pipeline. When the concentration of organic amine is too high, the gas phase flows through the adsorption unit, and the organic amine is adsorbed by the adsorbent to reduce the concentration of organic amine in the gas phase. The regeneration unit is connected to the adsorption unit, specifically through a pipeline connecting the adsorbent outlet of the adsorption unit and the inlet of the regeneration unit. When the adsorbent is saturated, the adsorbent can be transported to the regeneration unit for regeneration treatment. The regeneration unit can use hot air blowing or steam desorption to restore the adsorption capacity of the adsorbent. The regenerated adsorbent can be sent back to the adsorption unit through a pipeline for recycling to reduce the operating cost. The cooling unit is connected to the regeneration unit, which functions to cool the regenerated adsorbent to restore the adsorbent to an appropriate working temperature. The cooling unit is connected to the adsorbent inlet of the adsorption unit through a pipeline, thereby forming a circulating loop of the adsorbent.

[0061] For example, the amine concentration monitored by the gas phase amine liquid loss monitoring device 100 provided by the embodiment of the present application is 32 ppm. According to the molecular weight of amine and the total gas volume, the amine consumption corresponding to each ton of CO2 emission is 0.8 kg.

[0062] Please refer to Figure 4 The special processing unit 103 in the gas phase amine liquid loss monitoring device provided by the embodiment of the present application can include a quartz glass tube, a temperature controller, a nano-catalytic material, a filter, a weak luminescence detection device, a signal amplifier, a human-computer interface display and control unit.

[0063] On the other hand, a gas phase amine liquid loss monitoring system is also provided, which includes the gas phase amine liquid loss monitoring device 100 of any of the above.

[0064] The nano-catalytic material is placed in the quartz glass tube, the temperature controller is arranged on the quartz glass tube, the quartz glass tube has an inlet, the gas phase amine liquid gas to be measured enters from the inlet of the quartz glass tube, the filter is located below the quartz glass tube, the weak luminescence detection device is located below the filter, the signal amplifier is located below the weak luminescence detection device, the signal amplifier is connected with the human-computer interface display and control unit, and the human-computer interface display and control unit is connected with the gas phase amine liquid loss monitoring system of the present application for display.

[0065] The above merely describes the preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with the preferred embodiments as above, it is not intended to limit the present application, and any person skilled in the art can make some changes or modifications to the above disclosed methods and technical contents to obtain equivalent embodiments with equivalent changes, as long as the changes or modifications do not deviate from the technical solutions of the present application. Any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application still belong to the scope of the technical solutions of the present application.

Claims

1. A gas phase amine liquid loss monitoring device, characterized in that: include: A gas-phase amine liquid monitoring unit includes a plurality of gas sensors for real-time monitoring of data on organic amine volatile gases in the gas phase, wherein the gas sensors are made of a multi-metal composite oxide material, and the gas sensors made of the multi-metal composite oxide material have highly selective gas-sensing properties for organic amine volatile gases; a control unit connected to the gas-phase amine liquid monitoring unit and configured to receive data transmitted by the gas-phase amine liquid monitoring unit; a special processing unit connected to the control unit and configured to control the activation of a special sub-processing unit according to data received by the control unit; It also includes a carbon capture system, the carbon capture system is connected to the gas phase amine liquid monitoring unit, and the carbon capture system is used to capture carbon dioxide; The special treatment unit includes an adsorption unit, a regeneration unit and a cooling unit. The air inlet of the adsorption unit is connected to the gas phase outlet of the carbon capture system, and the adsorption unit is used to adsorb organic amines in the gas phase; The regeneration unit is connected to the adsorbent outlet and inlet of the adsorption unit through a pipeline. When the adsorbent is saturated, the regeneration unit regenerates the adsorbent and recycles it. The cooling unit is connected to the regeneration unit, and the cooling unit is used to cool the regenerated adsorbent and restore the adsorbent to the working temperature; The control unit includes a data preprocessing module; The data preprocessing module is used to obtain the average value of the organic amine concentration and process the average value of the organic amine concentration through an outlier elimination algorithm and a weighted average algorithm; The control unit also includes a process parameter adjustment module; The process parameter adjustment module is used to adjust the speed of the amine liquid circulation pump, the temperature and pressure of the absorption tower under different organic amine concentration threshold conditions based on the average organic amine concentration and the carbon capture process model; When the average value of the organic amine concentration is higher than the first threshold value, the speed of the amine liquid circulation pump is appropriately reduced to reduce the circulation amount of the amine liquid in the system; when the average value of the organic amine concentration is higher than the second threshold value, the temperature of the absorption tower is adjusted at the same time and the temperature setting value is lowered to weaken the volatilization trend of the amine liquid; when the average value of the organic amine concentration is higher than the third threshold value, the pressure of the absorption tower is further adjusted and the pressure setting value is lowered; when the organic amine concentration exceeds the set threshold value, the control unit activates a special processing unit to reduce the concentration of the organic amine in the gas phase and the solvent; wherein, the second threshold value is higher than the first threshold value, and the third threshold value is higher than the second threshold value.

2. The gas phase amine liquid loss monitoring device according to claim 1, characterized in that: The gas sensor is provided with a microprocessor, which is used to filter, amplify and digitally process the data of the monitored organic amine volatile gas.

3. The gas phase amine liquid loss monitoring device according to claim 1, characterized in that: The regeneration unit regenerates the adsorbent by hot air blowing or steam desorption and recycles it.

4. The gas phase amine liquid loss monitoring device according to claim 1, characterized in that: The control unit further includes a temperature sensor, which is used to obtain the temperature of the absorption tower.

5. The gas phase amine liquid loss monitoring device according to claim 1, characterized in that: The control unit further includes a pressure sensor, which is used to obtain the pressure of the absorption tower.

6. A gas phase amine liquid loss monitoring system, characterized in that: The device comprises the gas-phase amine liquid loss monitoring device according to any one of claims 1 to 5.

Images