Gas phase amine liquid loss monitoring device and system

Abstract

The invention relates to a gas-phase amine liquid loss monitoring device and system, and the device comprises a gas-phase amine liquid monitoring unit which comprises a plurality of gas sensitive elements which are used for monitoring the data of organic amine volatile gas in a gas phase in real time, and are made of a multi-metal composite oxide material, the gas sensitive element made of the multi-metal composite oxide material has a high-selectivity gas sensitive characteristic on organic amine volatile gas; the control unit is connected with the gas-phase amine liquid monitoring unit and is used for receiving data transmitted by the gas-phase amine liquid monitoring unit; and the special processing unit is connected with the control unit and is used for controlling the starting of the special sub-processing unit according to the data received by the control unit. The starting of the special sub-processing unit can be controlled according to data received by the control unit, and reliable data support is provided for concentration judgment, cost control and optimization of other parameters of the carbon capture system.

Description

Technical Field

[0001] The invention relates to the field of carbon capture, and in particular to a gas-phase amine liquid loss monitoring device and system. Background Art

[0002] As global climate change intensifies, 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 has broad application prospects in the fields of industry and energy. In the carbon capture process, amine liquid plays a key role as a common absorbent and has been widely used in industrial carbon capture facilities.

[0003] However, there are many problems with traditional amine liquid monitoring systems. Traditional systems rely solely on simple detection of parameters such as gas volume, temperature, and pressure. This monitoring method has disadvantages such as low accuracy and poor real-time performance. More seriously, the amine liquid is easily damaged during operation, and the traditional system fails to effectively monitor the amine loss in the gas phase, resulting in the inability to accurately measure the amount of amine liquid lost, and the inability to accurately control and calculate costs. In addition, the traditional system is inconvenient to operate, and operators usually can only rely on the overall liquid level and concentration to replenish liquid or water, which can easily cause system concentration fluctuations and affect carbon capture efficiency.

[0004] In order 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, providing reliable data support for concentration judgment, cost control and other parameter optimization of the entire system. Summary of the invention

[0005] The main purpose of the present invention is to overcome the defects of the existing gas-phase amine liquid loss monitoring device and provide a new gas-phase amine liquid loss monitoring device and its system. The technical problem to be solved is to enable it to 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 entire system, so that it is more suitable for practical use and has industrial utilization value.

[0006] The purpose of the present invention and the technical problem to be solved are achieved by adopting the following technical solutions.

[0007] Compared with the prior art, the present invention has obvious advantages and beneficial effects. From the above technical scheme, it can be seen that in order to achieve the above-mentioned invention purpose, the main technical contents of the present invention are as follows:

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

[0009] A gas phase amine liquid monitoring unit, comprising a plurality of gas sensors, the gas sensors being used to monitor data of organic amine volatile gases in the gas phase in real time, wherein the gas sensors are made of multi-metal composite oxide materials, and the gas sensors made of the multi-metal composite oxide materials have highly selective gas sensing properties for organic amine volatile gases;

[0010] 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;

[0011] The special processing unit is connected to the control unit and is used to control 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 provided in the gas sensing element, and the microprocessor is used to filter, amplify and digitally process the data of the monitored organic amine volatile gas.

[0013] In an optional embodiment, a carbon capture system is further included, wherein 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.

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

[0015] 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 the organic amine in the gas phase;

[0016] 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.

[0017] The cooling unit is connected to the regeneration unit, and is used to cool the regenerated adsorbent and restore the adsorbent to a working temperature.

[0018] In an optional embodiment, the regeneration unit regenerates the adsorbent by hot air blowing or steam desorption and recycles it.

[0019] In an optional embodiment, the control unit includes a data preprocessing module;

[0020] 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.

[0021] In an optional embodiment, the control unit further includes 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 heterojunction effect between the multi-metal and the oxide is utilized to improve the sensitivity of the multi-metal oxide material, 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 result is accurate. The control unit is connected to the gas-phase amine liquid monitoring unit and can receive the 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 special gas-phase amine liquid loss monitoring device and system of the present invention can control the opening of the special sub-processing unit according to the data received by the control unit, and provide reliable data support for the concentration judgment, cost control and other parameter optimization of the carbon capture system. It has many advantages and practical value mentioned above, and there is no similar design published or used in similar gas-phase amine liquid loss monitoring devices, which is indeed innovative. It has great improvements in both gas-phase amine liquid loss monitoring devices and functions, and has great progress in technology, and has produced easy-to-use and practical effects. It has improved multiple functions compared with the existing gas-phase amine liquid loss monitoring devices, so it is more suitable for practical use and has wide industrial utilization value. It is truly a novel, progressive and practical new design.

[0029] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings.

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

[0031] Figure 1 A schematic diagram of the appearance of a gas-phase amine liquid monitoring device provided in an embodiment of the present invention.

[0032] Figure 2 This is a structural block diagram of a gas-phase amine liquid monitoring device provided in an embodiment of the present invention.

[0033] Figure 3 A schematic diagram of the appearance of data detected by the gas-phase amine liquid monitoring device provided in an embodiment of the present invention.

[0034] Figure 4 A schematic diagram of the structure of an integrated special processing unit provided in an embodiment of the present invention.

[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 explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, methods, manufacturing methods, processing methods, steps, structures, characteristics and effects of (names) proposed in the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0038] See also Figures 1 to 4 As shown, the gas phase amine liquid loss monitoring device 100 of the preferred embodiment of the present invention comprises: a gas phase amine liquid monitoring unit 101, a control unit 102 and a special processing unit 103. The gas phase amine liquid monitoring unit 101 comprises a plurality of gas sensors, which are used to monitor the data of organic amine volatile gases in the gas phase in real time, wherein the gas sensors are made of multi-metal composite oxide materials, and the gas sensors made of multi-metal composite oxide materials have highly selective gas sensing characteristics for organic amine volatile gases.

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

[0040] The special processing unit 103 is connected to the control unit 102 and is used to control 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 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 101, and the monitoring result is accurate. The control unit 102 is connected to the gas-phase amine liquid monitoring unit 101, and the data transmitted by the gas-phase amine liquid monitoring unit 101 can be received. The special processing unit 103 is connected to the control unit 102, and can control the opening of the special sub-processing unit according to the data received by the control unit 102, 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 present invention will be further explained and described below through optional embodiments.

[0043] The multi-metal composite oxide provided by the embodiment of the present invention may be, for example, a spinel structure: MgAl2O4, MnFe2O4, Zn-CoO4, a perovskite structure: CaTiO3, BaTiO3, LiNbO3, SrZrO3, etc., and an ilmenite structure: FeTiO3.

[0044] The heterojunction effect between the multi-metal composite oxide and the oxide used in the gas-sensitive element prepared from the multi-metal composite oxide material in the embodiment of the present invention significantly improves the sensitivity of the gas-sensitive element to the detection of organic amine volatile gases by optimizing the energy band structure and electron transfer characteristics of the material, and can accurately obtain gas-sensitive materials with high selectivity for organic amine volatile gases, effectively eliminating the interference of other gas components on the monitoring results.

[0045] In an optional embodiment, a microprocessor is provided in the gas sensing element, and the microprocessor is used to filter, amplify and digitally process the data of the monitored organic amine volatile gas.

[0046] The gas-phase amine liquid loss monitoring device 100 provided in the embodiment of the present invention is provided with a microprocessor in the gas-sensitive element. The microprocessor is used to filter, amplify and digitally process the data of the monitored organic amine volatile gas to enhance the anti-interference ability of the signal and the data accuracy. The gas-sensitive element is connected to a high-precision gas sampling module. The high-precision gas sampling module can accurately collect samples of organic amine volatile gases in the gas phase according to a preset sampling strategy. At the same time, the gas-sensitive element has a periodic self-calibration function to ensure long-term stable and reliable monitoring performance.

[0047] In an optional embodiment, the gas-phase amine liquid loss monitoring device 100 provided in the embodiment of the present invention further includes a carbon capture system, which is connected to the gas-phase amine liquid monitoring unit 101 and is used to capture carbon dioxide.

[0048] In an optional embodiment, the special treatment device 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.

[0049] 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.

[0050] The cooling unit is connected to the regeneration unit, and is used to cool the regenerated adsorbent and restore the adsorbent to a working temperature.

[0051] The special processing unit 103 can start the corresponding sub-processing unit according to the instruction of the control unit 102 to achieve the purpose of reducing the concentration of organic amine volatile gases in the gas phase and the solvent, thereby improving the operating efficiency and stability of the carbon capture system.

[0052] In an optional embodiment, the regeneration unit regenerates the adsorbent by hot air blowing or steam desorption and recycles it.

[0053] In an optional embodiment, the control unit 102 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.

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

[0055] The control unit 102 provided in the embodiment of the present invention is responsible for receiving and processing the data from the gas phase amine liquid monitoring unit 101. The control unit 102 first performs an outlier elimination process on the received data of the organic amine volatile gas, and identifies and removes data points that obviously deviate from the normal range by comparing with the preset normal data range. Then, a weighted average algorithm is used to process the effective 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 the first threshold value (e.g., 50 ppm), the speed of the amine liquid circulation pump is appropriately 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 the second threshold value (where the second threshold value is higher than the first threshold value, the second threshold value can be 80 ppm), the temperature of the absorption tower is adjusted at the same time, and the temperature setting value is reduced 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 (where the third threshold value is higher than the second threshold value, the second threshold value can be 100 ppm), the pressure of the absorption tower is further adjusted, and the pressure setting value is reduced to reduce the gas phase escape of the amine liquid. In addition, when the organic amine concentration exceeds the set threshold value, the control unit 102 activates a special processing device to reduce the concentration of the organic amine in the gas phase and the solvent.

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

[0057] 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 value of organic amine concentration and the carbon capture process model, thereby forming a circulating treatment loop for the adsorbent and ensuring the continuous and effective operation of the special treatment device.

[0058] In an optional embodiment, the control unit 102 further includes a temperature sensor, and the temperature sensor is used to obtain the temperature of the absorption tower.

[0059] In an optional embodiment, the control unit 102 further includes a pressure sensor, and the pressure sensor is used to obtain 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 organic amines in the gas phase and the solvent. The adsorption unit is filled with an adsorbent with high adsorption capacity and selectivity for organic amines, such as modified activated carbon, molecular sieve, etc., and its air inlet is connected to the gas phase outlet of the carbon capture system through a pipeline. When the concentration of organic amines is too high, the gas phase flows through the adsorption unit, and the organic amines are adsorbed by the adsorbent, thereby reducing the concentration of organic amines in the gas phase. The regeneration unit is connected to the adsorption unit, specifically, the adsorbent outlet of the adsorption unit and the inlet of the regeneration unit are connected through a pipeline. When the adsorbent is saturated with adsorption, the adsorbent can be transported to the regeneration unit for regeneration treatment. The regeneration unit can restore the adsorption capacity of the adsorbent by means of hot air purging or steam desorption. The regenerated adsorbent can be sent back to the adsorption unit through a pipeline for recycling to reduce operating costs. After the cooling unit is connected to the regeneration unit, its function is to cool the regenerated adsorbent so that the adsorbent returns to a suitable working temperature. The cooling unit is connected to the adsorbent inlet of the adsorption unit through a pipeline to form a circulation loop of the adsorbent.

[0061] For example, the amine concentration monitored by the gas-phase amine liquid loss monitoring device 100 provided in the embodiment of the present invention is 32 ppm. According to the molecular weight of the amine and the total gas volume, it can be calculated that the amine consumption corresponding to each ton of CO2 emissions is 0.8 kg.

[0062] See also Figure 4 The special processing unit 103 in the gas-phase amine liquid loss monitoring device provided in the embodiment of the present invention may include a quartz glass tube, a temperature controller, a nano-catalytic material, a filter, a weak luminescence detection device, a signal amplifier, a human-machine interface display and a control unit.

[0063] On the other hand, a gas-phase amine liquid loss monitoring system is also provided, comprising any of the above-mentioned gas-phase amine liquid loss monitoring devices 100.

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

[0065] The above are only preferred embodiments of the present invention, and are not intended to limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technician familiar with the profession can make some changes or modifications to equivalent embodiments of equivalent changes using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A gas phase amine liquid loss monitoring device, characterized in that: include: A gas phase amine liquid monitoring unit, comprising a plurality of gas sensors, the gas sensors being used to monitor data of organic amine volatile gases in the gas phase in real time, wherein the gas sensors are made of multi-metal composite oxide materials, and the gas sensors made of the multi-metal composite oxide materials 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; The special processing unit is connected to the control unit and is used to control the start of the special sub-processing unit according to the data received by the control unit.

2. The gas phase amine liquid loss monitoring device according to claim 1 is characterized in that: The gas sensing element is provided with a microprocessor, and the microprocessor is used for filtering, amplifying and digitally processing the data of the monitored organic amine volatile gas.

3. The gas phase amine liquid loss monitoring device according to claim 1 is characterized in that: It also includes a carbon capture system, which is connected to the gas-phase amine liquid monitoring unit and is used to capture carbon dioxide.

4. The gas phase amine liquid loss monitoring device according to claim 3 is characterized in that: The special treatment device comprises 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 the organic amine 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 is used to cool the regenerated adsorbent and restore the adsorbent to a working temperature.

5. The gas phase amine liquid loss monitoring device according to claim 4 is characterized in that: The regeneration unit regenerates the adsorbent by hot air blowing or steam desorption and recycles it.

6. The gas phase amine liquid loss monitoring device according to claim 1 is characterized in that: 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.

7. The gas phase amine liquid loss monitoring device according to claim 6 is characterized in that: The control unit also includes a process parameter adjustment module; 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.

8. The gas phase amine liquid loss monitoring device according to claim 7 is characterized in that: The control unit further comprises a temperature sensor, and the temperature sensor is used to obtain the temperature of the absorption tower.

9. The gas phase amine liquid loss monitoring device according to claim 7, characterized in that: The control unit further comprises a pressure sensor, and the pressure sensor is used to obtain the pressure of the absorption tower.

10. A gas phase amine liquid loss monitoring system, characterized in that: It comprises the gas phase amine liquid loss monitoring device as described in any one of claims 1-9.

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