Carbon dioxide capture system
The modularly designed carbon dioxide capture system solves the problems of poor equipment adaptability and high cost in existing technologies, achieving flexible and efficient carbon dioxide capture, applicable to various industrial scenarios, reducing operating costs and improving capture efficiency.
Patent Information
- Application Number
- CN202520177969.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-27
- Publication Date
- 2026-01-23
- Estimated Expiration
- 2035-01-27
AI Technical Summary
Existing carbon dioxide capture systems are difficult to adapt to changes in flue gas flow and space constraints in different industrial sectors, resulting in high design difficulty, high cost, and unfavorable reuse in various scenarios. Furthermore, the lack of standardization limits their widespread application.
The modular carbon dioxide capture system includes flue gas pretreatment, safety gas pretreatment, and carbon dioxide separation units. These units are assembled and connected using fixed mounting brackets the size of shipping containers, allowing for flexible disassembly, assembly, and maintenance to adapt to different application scenarios. The modular connection method, which combines parallel and series connections, incorporates various separation technologies such as chemical adsorption, physical adsorption, and membrane separation.
It achieves flexibility, efficiency and standardization in carbon dioxide capture, reduces production costs, improves equipment stability and capture efficiency, is applicable to both stationary and mobile emission sources, reduces operating costs and expands the scope of application.
Smart Images
Figure CN223818418U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the field of carbon dioxide separation, and relates to a carbon dioxide capture system. BACKGROUND
[0002] Under the grim situation of global warming, the industrial field (for example: electric power, chemical industry, steel, cement, transportation and the like) as one of important carbon emission sources is faced with huge emission reduction pressure.
[0003] However, most of the existing carbon dioxide capture devices are customized for single carbon source processing design, which not only improves the design difficulty and production operation cost of the equipment, but also is not conducive to the replacement of the use scene and recycling, and is not conducive to the formation of a standard and standardized industrial chain.
[0004] In addition, the existing carbon dioxide capture system has not fully considered the actual problems of large incoming flue gas flow variation, space limitation and difficulty in integrating with existing systems, which greatly limits its wide application in different industrial fields.
[0005] Therefore, it is necessary to provide a carbon dioxide capture system. UTILITY MODEL CONTENT
[0006] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a carbon dioxide capture system for solving the application limitation problem of the prior art carbon dioxide capture system.
[0007] To achieve the above-mentioned purpose and other related purposes, the utility model provides a carbon dioxide capture system, which comprises:
[0008] The flue gas pretreatment device comprises a flue gas pretreatment fixed seat and a flue gas pretreatment module arranged on the flue gas pretreatment fixed seat.
[0009] The safety gas pretreatment device comprises a safety gas pretreatment fixed seat and a safety gas pretreatment module arranged on the safety gas pretreatment fixed seat.
[0010] The carbon dioxide separation device comprises a carbon dioxide separation fixed seat and a carbon dioxide separation module arranged on the carbon dioxide separation fixed seat.
[0011] Among them, the flue gas pretreatment module, the safety gas pretreatment module and the carbon dioxide separation module are connected by the fixed seats arranged correspondingly.
[0012] Optionally, further comprising a carbon dioxide storage device, the carbon dioxide storage device comprising a carbon dioxide storage fixing base and a carbon dioxide storage module arranged on the carbon dioxide storage fixing base, and the flue gas pretreatment module, the safety gas pretreatment module, the carbon dioxide separation module and the carbon dioxide storage module are assembled and connected through the fixing bases arranged correspondingly.
[0013] Optionally, each fixing base has a container size, the container size comprising 20 feet, 40 feet or 45 feet.
[0014] Optionally, each of the flue gas pretreatment module, the safety gas pretreatment module and the carbon dioxide separation module comprises self-serial connection and / or self-parallel connection.
[0015] Optionally, each of the flue gas pretreatment module, the safety gas pretreatment module and the carbon dioxide separation module is self-serially connected and / or self-parallelly connected to form a carbon dioxide capture block, and the carbon dioxide capture system comprises M>1 carbon dioxide capture blocks connected in parallel.
[0016] Optionally, the flue gas pretreatment module comprises a tail gas washing unit, a cooling unit, a dust removal unit, a desulfurization unit and a denitration unit; and / or the safety gas pretreatment module comprises a first gas-liquid separation unit, a first buffer unit, a compression unit, a cooling unit, a second gas-liquid separation unit, a filtration unit, a second buffer unit and a heating unit; each unit in each module comprises self-serial connection and / or self-parallel connection; the selected number of each unit comprises 0-100.
[0017] Optionally, the flue gas pretreatment module further comprises a waste heat recovery unit arranged correspondingly with the cooling unit; the safety gas pretreatment module further comprises a waste heat recovery unit arranged correspondingly with the cooling unit and / or a waste heat utilization unit arranged correspondingly with the heating unit.
[0018] Optionally, the carbon dioxide separation module comprises one or a combination of a carbon dioxide chemical adsorption separation module, a carbon dioxide physical adsorption separation module, a carbon dioxide membrane separation module and a carbon dioxide low-temperature rectification module; the carbon dioxide membrane separation module comprises a membrane separation unit, a vacuum unit and a buffer unit; each unit comprises self-serial connection and / or self-parallel connection, and the selected number of each unit comprises 0-100.
[0019] Optionally, a damping unit is arranged between each module and the fixing base arranged correspondingly; and / or a damping unit is arranged between each device and the base arranged correspondingly; wherein the damping unit comprises a damping rubber pad or a spring damper.
[0020] Optionally, a communication mode of the monitoring unit includes one or a combination of wired communication and wireless communication.
[0021] As described above, the carbon dioxide capture system includes the flue gas pretreatment device, the safety gas pretreatment device and the carbon dioxide separation device, wherein the flue gas pretreatment device includes a flue gas pretreatment fixed seat and a flue gas pretreatment module arranged on the flue gas pretreatment fixed seat; the safety gas pretreatment device includes a safety gas pretreatment fixed seat and a safety gas pretreatment module arranged on the safety gas pretreatment fixed seat; the carbon dioxide separation device includes a carbon dioxide separation fixed seat and a carbon dioxide separation module arranged on the carbon dioxide separation fixed seat; and the flue gas pretreatment module, the safety gas pretreatment module and the carbon dioxide separation module are connected by the fixed seats arranged correspondingly.
[0022] Further, the carbon dioxide storage device can be further included, and the carbon dioxide storage device includes a carbon dioxide storage fixed seat and a carbon dioxide storage module arranged on the carbon dioxide storage fixed seat, and the flue gas pretreatment module, the safety gas pretreatment module, the carbon dioxide separation module and the carbon dioxide storage module are connected by the fixed seats arranged correspondingly.
[0023] The carbon dioxide capture system can make carbon dioxide capture more flexible and efficient, and can expand the application scenario range; the user can flexibly adjust the increase, decrease, order and series-parallel connection of each device according to the actual incoming gas, thereby improving the equipment working efficiency; the user can flexibly disassemble, assemble, maintain and adjust each device under different application scenarios, and reduce the industrial production cost in the long run, thereby forming a processing industry chain; the pipeline connection between the devices is convenient, the combination and disassembly are efficient, the carbon dioxide capture efficiency can be greatly improved, and a more efficient engineering operation idea is provided for flexible capture in specific scenarios; each module can be stably connected with the base.
[0024] The carbon dioxide capture system has the characteristics of standardization, economic efficiency, high flexibility, small size, compactness, stability, reliability and high capture efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0025] Figure 1 A structure distribution schematic diagram of the carbon dioxide capture system in the embodiment one of the utility model is shown.
[0026] Figures 2a-2c A connection diagram of three different carbon dioxide membrane separation modules is shown in the embodiment one of the present application.
[0027] Figure 3 A structure distribution diagram of the carbon dioxide capture system in the embodiment two of the present application is shown.
[0028] Figure 4 A structure distribution diagram of a carbon dioxide capture block in the embodiment two of the present application is shown.
[0029] Explanation of reference signs
[0030] 100 flue gas pretreatment device
[0031] 101 tail gas washing unit
[0032] 102 cooling unit
[0033] 103 dust removal unit
[0034] 104 desulfurization unit
[0035] 105 denitration unit
[0036] 106 waste heat recovery unit
[0037] 200 safe gas pretreatment device
[0038] 201 first gas-liquid separation unit
[0039] 202 first buffer unit
[0040] 203 compression unit
[0041] 204 cooling unit
[0042] 205 second gas-liquid separation unit
[0043] 206 filtration unit
[0044] 207 second buffer unit
[0045] 208 heating unit
[0046] 209 waste heat recovery unit
[0047] 210 waste heat utilization unit
[0048] 300 carbon dioxide separation device
[0049] 310 carbon dioxide chemical adsorption separation module
[0050] 311 amino adsorption separation module
[0051] 312 metal organic framework adsorption separation module
[0052] 313 ionic liquid adsorption separation module
[0053] 320 carbon dioxide physical adsorption separation module
[0054] 321 activated carbon adsorption separation module
[0055] 322 zeolite molecular sieve adsorption separation module
[0056] 330 carbon dioxide membrane separation module
[0057] 331 membrane separation unit
[0058] 332 vacuum unit
[0059] 333 buffer unit
[0060] 340 carbon dioxide cryogenic rectification module
[0061] 400 carbon dioxide storage device
[0062] 500 auxiliary module
[0063] 600 base support DETAILED DESCRIPTION
[0064] The other advantages and effects of the present application can be easily understood by those skilled in the art from the content disclosed in the present specification. The present application can also be implemented or applied in other different specific embodiments, and each detail in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application.
[0065] It should be noted that the diagrams provided in the present embodiment only schematically illustrate the basic concept of the present application, and thus only show the components related to the present application in the diagrams, not the number, shape and size of the components when actually implemented. The shape, number and proportion of each component when actually implemented can be randomly changed, and the layout pattern of the components can be more complex.
[0066] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0067] Embodiment One
[0068] Referring to Figure 1 The embodiment provides a carbon dioxide capture system, which comprises a flue gas pretreatment device 100, a safe gas pretreatment device 200, a carbon dioxide separation device 300 and a carbon dioxide storage device 400; wherein the flue gas pretreatment device 100 comprises a flue gas pretreatment fixed seat (not shown) and a flue gas pretreatment module arranged on the flue gas pretreatment fixed seat; the safe gas pretreatment device 200 comprises a safe gas pretreatment fixed seat (not shown) and a safe gas pretreatment module arranged on the safe gas pretreatment fixed seat; the carbon dioxide separation device 300 comprises a carbon dioxide separation fixed seat (not shown) and a carbon dioxide separation module arranged on the carbon dioxide separation fixed seat; the carbon dioxide storage device 400 comprises a carbon dioxide storage fixed seat (not shown) and a carbon dioxide storage module arranged on the carbon dioxide storage fixed seat; and the flue gas pretreatment module, the safe gas pretreatment module, the carbon dioxide separation module and the carbon dioxide storage module are connected by the fixed seats arranged correspondingly.
[0069] In the embodiment, the flue gas pretreatment module can be modularly arranged through the flue gas pretreatment fixed seat, the safe gas pretreatment module can be modularly arranged through the safe gas pretreatment fixed seat, the carbon dioxide separation module can be modularly arranged through the carbon dioxide separation fixed seat, and the carbon dioxide storage module can be modularly arranged through the carbon dioxide storage fixed seat, so that flexible, efficient and compact assembly connection and system layout can be realized, the devices can be flexibly disassembled and combined according to the actual flue gas emission, space layout and operation condition of different application scenes, the installation and application in different application scenes are facilitated, and the single device can be upgraded or maintained conveniently without affecting the operation of the whole system.
[0070] It should be noted that in another embodiment, the carbon dioxide storage device 400 can also not be modularly arranged, which is not limited here.
[0071] As an example, the carbon dioxide capture system can be suitable for fixed carbon dioxide emission sources or mobile carbon dioxide emission sources.
[0072] Specifically, for different carbon dioxide emission sources, the carbon dioxide capture system in the embodiment can be suitable for fixed carbon dioxide emission sources such as industrial emissions of coal-fired power plants, cement plants and steel plants, and can be suitable for mobile carbon dioxide emission sources such as ship exhaust, so as to realize the carbon dioxide emission reduction demand.
[0073] As an example, each of the fixed seats preferably has a container size, and the container size preferably includes 20 feet, 40 feet or 45 feet, i.e., the flue gas pretreatment fixed seat, the safety gas pretreatment fixed seat, the carbon dioxide separation fixed seat and the carbon dioxide storage fixed seat can all have a container size, wherein the container size can include, for example, 20 feet, 40 feet or 45 feet.
[0074] Specifically, when the flue gas pretreatment fixed seat, the safety gas pretreatment fixed seat, the carbon dioxide separation fixed seat and the carbon dioxide storage fixed seat are provided with a standard size, the assembly and disassembly between devices can be facilitated, and they can be easily installed on a base with a standard size. In particular, when each fixed seat adopts a container size, a complete process flow in the form of a "container" can be formed to adapt to flexible disassembly, assembly, maintenance, adjustment, transportation, application and the like in different application scenarios, such as application in the field of ships. In the long run, this can reduce industrial production costs and promote the formation of a processing industry chain.
[0075] The specific size of the flue gas pretreatment fixed seat, the safety gas pretreatment fixed seat, the carbon dioxide separation fixed seat and the carbon dioxide storage fixed seat is not limited here.
[0076] As an example, the flue gas pretreatment module can include a tail gas washing unit 101, a cooling unit 102, a dust removal unit 103, a desulfurization unit 104 and a denitration unit 105; the safety gas pretreatment module can include a first gas-liquid separation unit 201, a first buffer unit 202, a compression unit 203, a cooling unit 204, a second gas-liquid separation unit 205, a filtration unit 206, a second buffer unit 207 and a heating unit 208.
[0077] Further, the flue gas pretreatment module can further include a waste heat recovery unit 106 corresponding to the cooling unit 102; the safety gas pretreatment module can further include a waste heat recovery unit 209 corresponding to the cooling unit 204 and / or a waste heat utilization unit 210 corresponding to the heating unit 208.
[0078] Specifically, as Figure 1 In the present embodiment, the flue gas pretreatment module includes six process units: the tail gas washing unit 101, the cooling unit 102, the dust removal unit 103, the desulfurization unit 104, the denitration unit 105 and the waste heat recovery unit 106.
[0079] Furthermore, in the flue gas pretreatment module, the number of each unit can be from 0 to 100, such as 0, 5, 10, 20, 50, 100, etc., and each unit can be connected in series and / or in parallel. The waste heat recovery unit 106 is correspondingly set with the cooling unit 102, which can be in a one-to-one correspondence, or multiple cooling units 102 can correspond to one waste heat recovery unit 106.
[0080] The exhaust gas scrubbing unit 101 aims to remove the main impurities from the incoming flue gas, adjust its properties, and prevent particulate matter from clogging pipes and other components. For example, when the incoming gas contains a large amount of acidic gases, a specific detergent solution can be used in the exhaust gas scrubbing stage to remove some of the acidic gases and soluble impurities through methods such as spraying. It can also be combined with structures such as coarse filters, medium filters, and fine filters to effectively remove large dust particles, fine dust, and tiny particulate impurities from incoming flue gas generated by sources such as ships, preventing these impurities from clogging or damaging subsequent processes. The cooling unit 102 aims to reduce the temperature of the incoming gas and decrease moisture evaporation, preventing excessively high-temperature flue gas from affecting the service life of equipment, pipes, valves, and other accessories. For example, a high-efficiency air-cooled or water-cooled heat exchanger can be used to cool the high-temperature flue gas to a suitable temperature, facilitating subsequent dust removal operations. The dust removal unit 103 aims to ensure the removal of fine dust particles from the flue gas. A combination of multi-stage electrostatic precipitators and bag filters can be considered, but it is not limited to this approach. The desulfurization unit 104 and the denitrification unit 105 are used to specifically remove acidic gases and nitrogen oxides from the incoming gas to prevent rapid corrosion of equipment and pipelines. For example, when the incoming gas composition has a high sulfur and nitrate content, a desulfurization and denitrification process, such as "wet desulfurization," can be activated. This utilizes an alkaline absorbent to react with sulfur dioxide to generate stable sulfate products, thereby reducing the sulfur content in the flue gas. Then, through selective catalytic reduction (SCR) technology, nitrogen oxides are converted into harmless nitrogen and water under the action of a catalyst. The waste heat recovery unit 106 is correspondingly arranged with the cooling unit 102, allowing the recovery of heat released by the cooling unit 102 to further save energy and reduce costs.
[0081] like Figure 1 In this embodiment, the safety gas pretreatment module includes 10 process units: the first gas-liquid separation unit 201, the first buffer unit 202, the compression unit 203, the cooling unit 204, the second gas-liquid separation unit 205, the filtration unit 206, the second buffer unit 207, the heating unit 208, the waste heat recovery unit 209, and the waste heat utilization unit 210.
[0082] Further, in the safety gas pre-treatment module, the number of units selected can include 0-100, such as 0, 5, 10, 20, 50, 100, etc., and each unit can be connected by self-series connection and / or self-parallel connection, wherein the waste heat recovery unit 209 is correspondingly arranged with the cooling unit 204, which can be one-to-one correspondence, or one waste heat recovery unit 209 corresponds to one cooling unit 204; the waste heat utilization unit 210 is correspondingly arranged with the heating unit 208, which can be one-to-one correspondence, or one waste heat utilization unit 210 corresponds to one heating unit 208.
[0083] The first gas-liquid separation unit 201 can preliminarily separate gas and liquid impurities, the separated gas can enter the subsequent processing flow, and the liquid impurities will be periodically released to the designated recovery tank (not shown) through the external discharge pipeline (not shown). The first buffer unit 202 plays a role in stabilizing the pressure and flow of the gas flow. The compression unit 203 aims to increase the gas pressure to meet the requirements of carbon dioxide separation, and multi-stage compressors can be considered. The cooling unit 204 can reduce the gas temperature again through a heat exchanger to improve the subsequent carbon dioxide separation efficiency. The second gas-liquid separation unit 205 can further remove liquid water droplets in the gas. The filtering unit 206 aims to remove small particle impurities, and high-precision filters can be considered. The second buffer unit 207 can stabilize the pressure again. The heating unit 208 can use electric heating, etc., to heat the gas as needed to prevent the gas from condensing or the separation device performance from declining due to too low temperature in the carbon dioxide separation process. The waste heat recovery unit 209 is correspondingly arranged with the cooling unit 204, which can recover the heat released by the cooling unit 204 to further save energy and reduce costs; similarly, the waste heat utilization unit 210 is correspondingly arranged with the heating unit 208, which can realize the reuse of heat to further save energy and reduce costs.
[0084] As an example, in the carbon dioxide separation module, the carbon dioxide separation module can include one or a combination of a carbon dioxide chemical adsorption separation module 310, a carbon dioxide physical adsorption separation module 320, a carbon dioxide membrane separation module 330, or a carbon dioxide low-temperature rectification module 340.
[0085] Specifically, as Figure 1The carbon dioxide separation module can include one or a combination of the carbon dioxide chemical adsorption separation module 310, the carbon dioxide physical adsorption separation module 320, the carbon dioxide membrane separation module 330, or the carbon dioxide cryogenic rectification module 340, as needed. The carbon dioxide chemical adsorption separation module 310 can include, for example, an amino adsorption separation module 311, a metal organic framework material adsorption separation module 312, an ionic liquid adsorption separation module 313, etc. The carbon dioxide physical adsorption separation module 320 can include, for example, an activated carbon adsorption separation module 321, a zeolite molecular sieve adsorption separation module 322, etc.
[0086] As an example, the carbon dioxide separation module can include a membrane separation unit 331, a vacuum unit 332, and a buffer unit 333.
[0087] Further, in the carbon dioxide separation module, the number of units selected can include 0-100, such as 0, 5, 10, 20, 50, 100, etc., and the units can be connected by being serially connected and / or parallelly connected.
[0088] Referring to Figures 2a-2c The present embodiment further introduces the carbon dioxide membrane separation module 330 as an example of the carbon dioxide membrane separation module.
[0089] Specifically, when the carbon dioxide membrane separation module 330 is used for carbon dioxide separation, three process units are included: a membrane separation unit 331, a vacuum unit 332, and a buffer unit 333.
[0090] Further, in the carbon dioxide membrane separation module 330, the number of units selected can include 0-100, such as 0, 5, 10, 20, 50, 100, etc., and the units can be connected by being serially connected and / or parallelly connected.
[0091] The membrane separation unit 331 can use a composite membrane material assembly with high carbon dioxide selectivity and permeability, such as a modified membrane with polyimide as the matrix and doped with specific metal ions or nanoparticles, etc. According to the actual carbon capture purity requirements, flue gas components, and flue gas flow, the type, number, and connection mode of the membrane separation unit 331 can be flexibly adjusted.
[0092] Further, a special gas distributor and guide plate can be provided inside the membrane separation unit 331 to ensure uniform distribution and stable flow of flue gas on the membrane surface, reduce the concentration polarization phenomenon of the gas, and improve the efficiency and stability of carbon dioxide separation.
[0093] According to the actual application scenario, the vacuum unit 332 can use, for example, Figure 2aN=2, two-stage membrane separation module; as Figure 2b N=2, two-stage membrane separation module; as Figure 2c N=2, two-stage membrane separation module; as
[0094] The following only introduces two-stage, two-stage series, two-stage parallel carbon dioxide separation modules, and the concept of "multi-stage carbon dioxide separation module" is not described.
[0095] Two-stage: as Figure 2a , two-stage structure is usually used to improve the efficiency of carbon dioxide separation. The gas after a series of treatments enters the first carbon dioxide separation. Under the driving of a certain pressure difference or concentration difference, carbon dioxide begins to penetrate the first membrane separation unit 331 into the other side of the membrane, and the remaining trapped gas is left outside the membrane. The separated carbon dioxide gas is directly injected into the carbon dioxide storage module in the carbon dioxide storage device 400 after being pumped into the buffer unit 333 such as a buffer tank by the vacuum unit 332 such as a vacuum pump, and the first trapped gas is connected to the second carbon dioxide separation through the pipeline, aiming to separate the remaining carbon dioxide in the trapped gas.
[0096] Two-stage series: as Figure 2b , series structure is mainly used to improve the purity of separated carbon dioxide. The gas after a series of treatments enters the first carbon dioxide separation. Under the driving of a certain pressure difference or concentration difference, carbon dioxide begins to penetrate the first membrane separation unit 331 into the other side of the membrane, and the remaining trapped gas is left outside the membrane. Since the trapped gas at this time is clean flue gas after strict treatment, it can be discharged through the exhaust pipeline. According to the actual membrane pressure on both sides, it can be considered whether to use the vacuum pump to promote carbon dioxide to filter faster, and after buffering by the buffer tank, it enters the second carbon dioxide separation. The second carbon dioxide separation process is similar to the first carbon dioxide separation, aiming to filter and purify carbon dioxide again. It should be noted that the specific selection of each unit in each carbon dioxide separation can be the same or different, and can be personalized according to the actual gas composition and filtering order.
[0097] Two-stage parallel: as Figure 2c , parallel structure is mainly used to improve the time efficiency of carbon dioxide separation and increase the amount of carbon dioxide captured at the same time. When the incoming gas flow increases sharply, this method can improve the total gas processing capacity of the system. It can be understood as directly connecting two first carbon dioxide separation modules in parallel.
[0098] It should be noted that in special application scenarios, multi-section, series, and parallel can be combined to further improve the purity and capture rate of carbon dioxide, and the membrane materials of each stage can be selected individually according to the actual gas composition, flow rate, and target capture purity. A three-way valve and pipeline can be added between the two-stage membrane separation units 331 to facilitate flexible strategy changes and collaborative work.
[0099] As an example, the carbon dioxide storage module can include a high-pressure storage tank or a low-temperature liquefied storage tank.
[0100] Specifically, the carbon dioxide storage module is used for safely packaging and storing captured carbon dioxide, and can be equipped with a container-type high-pressure storage tank or a low-temperature liquefied storage tank for storing carbon dioxide separated from the carbon dioxide separation module. The unique design of this component greatly improves the efficiency and flexibility of loading and unloading.
[0101] As an example, a switching unit, a monitoring unit, and a controller in communication can also be provided, wherein the monitoring unit includes one or a combination of a pressure monitoring unit, a temperature monitoring unit, a flow monitoring unit, and a purity monitoring unit, and the communication method includes one or a combination of wired communication and wireless communication.
[0102] Specifically, reference can be made to Figure 3 and Figure 4 The carbon dioxide storage module can also be provided with an auxiliary module 500, wherein the auxiliary module 500 can also be a modular device with a fixed seat, which is not described here. The auxiliary module 500 can include the switching unit, the monitoring unit, and the controller, etc., and the specific unit types and connection methods are not limited here.
[0103] The monitoring unit can include one or a combination of a pressure monitoring unit, a temperature monitoring unit, a flow monitoring unit, and a purity monitoring unit, and the setting of the monitoring unit can make the system have perfect pressure monitoring and temperature monitoring, etc., to ensure the safe storage and transportation of carbon dioxide, and under the premise that the size of the container can be moved as a whole, the appropriate storage tank type and specification can be selected according to the storage requirements and space conditions of the specific use scenario. The setting of the controller can establish control connections between modules to connect the control of each module through signal transmission, realize the centralized control and automatic operation of the entire carbon dioxide capture system. In the control connection process, in order to ensure the accuracy and stability of signal transmission, appropriate communication protocols and control algorithms can be used to realize the collaborative work between modules. The communication method can include one or a combination of wired communication and wireless communication, which is not limited here.
[0104] The connecting pipeline between the flue gas pretreatment module and the safety gas pretreatment module preferably adopts acid and alkali resistant, high temperature resistant stainless steel pipeline, and a flow regulating valve, a pressure sensor, a check valve and the like can be installed on the pipeline. The flow regulating valve can accurately control the flue gas flow entering the safety gas pretreatment module according to the overall operation of the system; the pressure sensor can monitor the pressure in the pipeline in real time and feed back signals to the controller to adjust the operating parameters; and the check valve can prevent backflow of the gas to protect the safety of the equipment.
[0105] The pipeline connection between the internal processes of the safety gas pretreatment module and the carbon dioxide separation module can select appropriate pipe materials according to the requirements of different equipment, such as seamless steel pipes for high-pressure parts and copper pipes with good heat preservation performance for low-temperature parts. Flange connection or welded connection with good sealing performance can be used at the connection site, and necessary filters, check valves and pressure regulators can be installed to ensure stable and efficient transmission of the gas between processes, avoid impurities from blocking the membrane separation unit 331, and avoid pressure fluctuations affecting the separation effect.
[0106] The pipeline between the carbon dioxide separation module and the carbon dioxide storage module needs to have high-pressure and corrosion-resistant functions, such as titanium alloy pipelines. Purity analyzers, flow controllers and emergency shut-off valves can be provided on the pipeline. The purity analyzer can monitor the purity of carbon dioxide in real time, and when the purity reaches the set storage standard, the flow controller can adjust the storage flow of carbon dioxide according to the storage state and pressure of the tank, and the emergency shut-off valve can quickly shut off the pipeline connection when abnormal conditions occur in the system, such as excessive pressure and leakage, to ensure safety.
[0107] As an example, a damping unit is provided between each module and the corresponding fixed seat, and / or a damping unit is provided between the corresponding fixed seat and the base of each device, wherein the damping unit includes a damping rubber pad or a spring damper. That is, a damping unit can be provided between the flue gas pretreatment module and the flue gas pretreatment fixed seat, the safety gas pretreatment module and the safety gas pretreatment fixed seat, the carbon dioxide separation module and the carbon dioxide separation fixed seat, and the carbon dioxide storage module and the carbon dioxide storage fixed seat; and / or a damping unit is provided between the flue gas pretreatment fixed seat, the safety gas pretreatment fixed seat, the carbon dioxide separation fixed seat and the carbon dioxide storage fixed seat and the corresponding base; the damping unit includes a damping rubber pad or a spring damper.
[0108] Specifically, when the fixed seat corresponding to each module has a standard specified size, such as a container size, it can facilitate the formation of a "container type" complete process flow, which can be suitable for different application scenarios, such as ship application scenarios, to achieve flexible disassembly, assembly, maintenance, adjustment, transportation and the like.
[0109] When the flue gas pretreatment module and the flue gas pretreatment fixed seat, the safety gas pretreatment module and the safety gas pretreatment fixed seat, the carbon dioxide separation module and the carbon dioxide separation fixed seat, and the carbon dioxide storage module and the carbon dioxide storage fixed seat are provided with the damping unit such as damping rubber pad or spring damper, the vibration generated during the operation of the equipment can be reduced, the stability is improved, and especially for some equipment with large vibration such as compressor.
[0110] Similarly, when the flue gas pretreatment fixed seat, the safety gas pretreatment fixed seat, the carbon dioxide separation fixed seat and the carbon dioxide storage fixed seat are provided with the damping unit such as damping rubber pad or spring damper between the corresponding base, the vibration generated during the operation of the equipment can be reduced, and the influence on the overall structure of the ship and other equipment can be avoided.
[0111] Each fixed seat can be welded by high-strength steel to have sufficient rigidity and stability, and the fixed seat and the corresponding base can be fixed by means such as bolt connection, buckle connection or welding connection to be fixed at a designated position in the ship deck or engine room.
[0112] The carbon dioxide capture system in the embodiment has the following beneficial effects:
[0113] 1. Standardization: The process equipment involved is produced by considering the standard size to facilitate multi-link series and / or parallel splicing assembly, and to facilitate installation on the base with standard size, forming a "container type" complete process flow, facilitating flexible disassembly, assembly, maintenance and adjustment in different scenarios (such as ships), and reducing industrial production costs in the long run, and promoting the formation of processing industrial chain for related equipment. Effectively solve the problem that the existing carbon dioxide capture device needs to be designed and customized according to different application scenarios and actual flue gas conditions, with long construction period, high cost, great difficulty and difficult operation.
[0114] 2. Economic efficiency: Compared with the traditional chemical adsorption method, the membrane separation method has lower energy consumption, and the modular design reduces the manufacturing, installation and maintenance costs of the equipment, thereby having good economic efficiency in long-term operation, and being beneficial to different industrial enterprise operators (including but not limited to ships) to meet environmental protection requirements and effectively reduce about 50% of the carbon dioxide capture operation cost.
[0115] 3. High flexibility, small size and compactness: The modularized splicing connection allows each module to be flexibly disassembled and combined according to the actual flue gas emission, space layout and operating conditions of different application scenarios, facilitating installation and application in different types and scales of application scenarios, such as ships, and facilitating upgrading or maintenance of individual modules without affecting the operation of the entire system.
[0116] 4. Stable reliability: The perfect pipeline connection and base fixing method, as well as the stable operation setting inside each module, ensure that the entire carbon dioxide capture system can reliably operate in complex operating environments, such as ship sway, vibration, temperature and humidity changes, reducing the probability of failure and improving the service life of the system.
[0117] 5. High efficiency of capture effect: Through optimized flue gas pretreatment and multi-stage carbon dioxide separation (including two stages), carbon dioxide can be efficiently captured from incoming flue gas, improving the carbon dioxide capture rate and purity, reducing carbon emissions, and making a positive contribution to addressing global climate change.
[0118] Example Two
[0119] Referring to Figure 3 , this embodiment provides another carbon dioxide capture system, which is mainly different from the first embodiment in that:
[0120] Each of the flue gas pretreatment module, the safety gas pretreatment module and the carbon dioxide separation module includes self-serial connection and / or self-parallel connection.
[0121] As Figure 3 , in this embodiment, each of the flue gas pretreatment module, the safety gas pretreatment module and the carbon dioxide separation module is self-serially connected and / or self-parallelly connected to form a carbon dioxide capture block, and the carbon dioxide capture system includes M>1 carbon dioxide capture blocks connected in parallel.
[0122] Specifically, as Figure 3 , there are M1, M2, …, Mn carbon dioxide capture blocks, each block includes the flue gas pretreatment device 100, the safety gas pretreatment device 200, and the carbon dioxide separation device 300 that are spliced and connected, and the carbon dioxide capture blocks after splicing and connection can be stacked in parallel with each other through the base support 600 for flexible adjustment of gas processing capacity, and the outlets of each carbon dioxide capture block can be connected to the inlet pipelines of M1, M2, …, Mn carbon dioxide storage devices 400.
[0123] Further, each carbon dioxide capture block can have the same structure, of course, it can also be set to have different structures according to needs.
[0124] The composition units, connections, fixation, etc. of the flue gas pretreatment module, the safety gas pretreatment module, the carbon dioxide separation module, etc. in the carbon dioxide capture block can refer to Embodiment One, and will not be repeated here.
[0125] Referring to Figure 4 The structure distribution schematic diagram of the carbon dioxide capture block adopting a combination of series and parallel connection is shown.
[0126] Specifically, as Figure 4 The structure distribution schematic diagram of the carbon dioxide capture block M1' having the flue gas pretreatment device 100 in parallel and the carbon dioxide separation device 300 in series is shown in the above table, but the connection mode of each carbon dioxide capture block is not limited thereto.
[0127] To further embody the advantages of the carbon dioxide capture system of the utility model, the modular and standardized carbon dioxide capture system of the utility model and the existing customized carbon dioxide capture system are compared below, and the carbon dioxide capture system is introduced from the economic benefit angle.
[0128] The existing customized carbon dioxide capture system needs to be designed and manufactured according to specific application scenarios, resulting in a long production cycle, high design cost, process adjustment cost and on-site installation cost, while the modular and standardized carbon dioxide capture system of the utility model can greatly shorten the production cycle and reduce the manufacturing and maintenance cost due to the adoption of container size standardized component production.
[0129] The same incoming gas is processed below, and the same emission standard is achieved as an example:
[0130] The production cycle of the customized carbon dioxide capture system is 6-12 months, while the production cycle of the modular and standardized carbon dioxide capture system of the utility model is only 2-3 months.
[0131] The modular and standardized carbon dioxide capture system of the utility model can save more than 50% of the design cost after modular design of the reusable standard module; the standardized batch production can reduce the process adjustment time and manual operation, and reduce the single manufacturing cost by about 30%; the modular components adopt a container standard, which can be directly transported to the application site, reducing the installation time and labor cost by about 40%; the standard parts are easy to replace and upgrade, and the maintenance cost is expected to be reduced by 20%-30%.
[0132] As an example of the power industry, the modular and standardized carbon dioxide capture system of the utility model can reduce the manufacturing cost by about 30% and the maintenance cost by about 20% after the standardized module is popularized in transformer manufacturing.
[0133] As an example of the marine transportation industry, the modular and standardized carbon dioxide capture system of the utility model can reduce the global logistics cost by more than 35% and improve the cargo loading and unloading efficiency by about 50% after the container is standardized.
[0134] As an example of the heating, ventilation and air conditioning (HVAC) industry, the modular and standardized carbon dioxide capture system of the utility model can reduce the equipment manufacturing cost by about 25% and the on-site installation cost by about 40% after standardization.
[0135] The cost comparison can be referred to the following table:
[0136] Cost item Customized part (current) Standard part (predicted) Cost reduction ratio Design cost ￥100,000 per set ￥70,000 per set 50％ Manufacturing cost ￥600,000 per set ￥420,000 per set 30％ Transportation and installation cost ￥200,000 per set ￥120,000 per set 40％ Maintenance cost (per year) ￥100,000 per year ￥70,000 per year 30％ Total cost ￥1,000,000 ￥700,000 30％
[0137] Therefore, the modular and standardized carbon dioxide capture system of the utility model can significantly reduce the design, manufacturing, transportation, installation and maintenance costs, and improve the flexibility and adaptability of the system; and the standardized production can promote the formation of a complete industrial chain, thereby greatly reducing the operating cost of the entire industry and creating a larger market space for the popularization of carbon capture equipment.
[0138] In summary, the carbon dioxide capture system includes the flue gas pretreatment device, the safety gas pretreatment device and the carbon dioxide separation device, wherein the flue gas pretreatment device includes a flue gas pretreatment fixed seat and a flue gas pretreatment module arranged on the flue gas pretreatment fixed seat; the safety gas pretreatment device includes a safety gas pretreatment fixed seat and a safety gas pretreatment module arranged on the safety gas pretreatment fixed seat; the carbon dioxide separation device includes a carbon dioxide separation fixed seat and a carbon dioxide separation module arranged on the carbon dioxide separation fixed seat; and the flue gas pretreatment module, the safety gas pretreatment module and the carbon dioxide separation module are connected by the fixed seats arranged correspondingly.
[0139] Further, the carbon dioxide storage device can also be included, and the carbon dioxide storage device includes a carbon dioxide storage fixed seat and a carbon dioxide storage module arranged on the carbon dioxide storage fixed seat, and the flue gas pretreatment module, the safety gas pretreatment module, the carbon dioxide separation module and the carbon dioxide storage module are connected by the fixed seats arranged correspondingly.
[0140] The carbon dioxide capturing system, the flue gas pretreatment device, the safe gas pretreatment device, the carbon dioxide separation device and the carbon dioxide storage device are assembled and connected, carbon dioxide capturing is more flexible and efficient, and the application scene range can be enlarged; the user can flexibly adjust the increase, decrease, order and series-parallel connection of each device according to the actual incoming gas, so that the equipment working efficiency is improved; each device can be flexibly disassembled, assembled, maintained and adjusted under different application scenes, industrial production cost is reduced in the long run, and a processing industry chain is formed; pipeline connection between each device is convenient, combination and disassembly are efficient, carbon dioxide capturing efficiency can be greatly improved, more efficient engineering operation ideas are provided for flexible capturing in specific scenes; each module can be stably connected with the base.
[0141] The carbon dioxide capturing system has the characteristics of standardization, high efficiency, high flexibility, small size, compactness, stability, reliability and high capturing efficiency.
[0142] Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value.
[0143] The above-mentioned embodiments only exemplarily illustrate the principle and effect of the utility model, and are not used for limiting the utility model. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and category of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.
Claims
1. A carbon dioxide capture system, characterized in that, The carbon dioxide capture system includes: A flue gas pretreatment device, the flue gas pretreatment device including a flue gas pretreatment base and a flue gas pretreatment module disposed on the flue gas pretreatment base; A safety gas pretreatment device, the safety gas pretreatment device including a safety gas pretreatment base and a safety gas pretreatment module disposed on the safety gas pretreatment base; A carbon dioxide separation device, comprising a carbon dioxide separation base and a carbon dioxide separation module disposed on the carbon dioxide separation base; The flue gas pretreatment module, the safety gas pretreatment module, and the carbon dioxide separation module are assembled and connected by their respective fixed bases.
2. The carbon dioxide capture system according to claim 1, characterized in that: It also includes a carbon dioxide storage device, which includes a carbon dioxide storage base and a carbon dioxide storage module disposed on the carbon dioxide storage base. The flue gas pretreatment module, the safety gas pretreatment module, the carbon dioxide separation module and the carbon dioxide storage module are assembled and connected through their respective corresponding bases.
3. The carbon dioxide capture system according to claim 1 or 2, characterized in that: Each fixture is available in container sizes, including 20 feet, 40 feet, or 45 feet.
4. The carbon dioxide capture system according to claim 1, characterized in that: Each module in the flue gas pretreatment module, the safety gas pretreatment module, and the carbon dioxide separation module can be connected in series and / or in parallel.
5. The carbon dioxide capture system according to claim 4, characterized in that: The flue gas pretreatment module, the safety gas pretreatment module, and the carbon dioxide separation module are connected in series and / or in parallel to form a carbon dioxide capture block, and the carbon dioxide capture system includes M>1 carbon dioxide capture blocks connected in parallel.
6. The carbon dioxide capture system according to claim 1, characterized in that: The flue gas pretreatment module includes a tail gas scrubbing unit, a cooling unit, a dust removal unit, a desulfurization unit, and a denitrification unit; and / or the safety gas pretreatment module includes a first gas-liquid separation unit, a first buffer unit, a compression unit, a cooling unit, a second gas-liquid separation unit, a filtration unit, a second buffer unit, and a heating unit; each unit in each module is connected in series and / or in parallel; the number of units selected ranges from 0 to 100.
7. The carbon dioxide capture system according to claim 6, characterized in that: The flue gas pretreatment module further includes a waste heat recovery unit corresponding to the cooling unit; the safety gas pretreatment module further includes a waste heat recovery unit corresponding to the cooling unit and / or a waste heat utilization unit corresponding to the heating unit.
8. The carbon dioxide capture system according to claim 1, characterized in that: The carbon dioxide separation module includes one or a combination of a carbon dioxide chemical adsorption separation module, a carbon dioxide physical adsorption separation module, a carbon dioxide membrane separation module, and a carbon dioxide cryogenic distillation module; the carbon dioxide membrane separation module includes a membrane separation unit, a vacuum unit, and a buffer unit; each unit is connected in series and / or in parallel, and the number of each unit ranges from 0 to 100.
9. The carbon dioxide capture system according to claim 1 or 2, characterized in that: Each module is equipped with a vibration damping unit between itself and its corresponding mounting base; and / or each device is equipped with a vibration damping unit between its corresponding mounting base and its base. The shock absorption unit includes a shock-absorbing rubber pad or a spring shock absorber.
10. The carbon dioxide capture system according to claim 1 or 2, characterized in that: It is also equipped with a switching unit, a monitoring unit and a controller for communication, wherein the monitoring unit includes one or a combination of a pressure monitoring unit, a temperature monitoring unit, a flow monitoring unit and a purity monitoring unit, and the communication method includes one or a combination of wired communication and wireless communication.