Series-parallel connection coupling membrane skid equipment for carbon dioxide separation

Abstract

The utility model relates to the technical field of carbon dioxide paving and collecting equipment, and discloses series-parallel connection coupling membrane skid equipment for carbon dioxide separation, which comprises a main pipeline provided with a gas inlet pipeline, an enriched gas pipeline and an exhaust gas branch pipe, and further comprises at least one group of single branch membrane components provided with at least one branch membrane unit, the series module assemblies are formed by connecting at least two branch membrane units in series, every two adjacent or close branch membrane units are respectively connected through a middle branch pipe, and meanwhile, a plurality of series module assemblies are connected between the enriched gas pipeline and the exhaust gas branch pipe in parallel; wherein each branch membrane unit is provided with a lateral upper branch pipe, an enriched gas branch pipe and an exhaust gas branch pipe. The membrane group skid device for flue gas carbon capture is high in recovery rate, convenient to mount and dismount, controlled in a unitized manner, flexible to operate, small in occupied space and convenient and fast to maintain and maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of carbon dioxide collection equipment, in particular to a series-parallel coupled membrane skid device for carbon dioxide separation. Background Art

[0002] The statements in this section are merely to provide background technology related to the disclosure of the present utility model and do not necessarily constitute prior art.

[0003] For oil-fired power generation and large-scale industrial sectors, the combustion of fossil fuels produces large amounts of carbon dioxide, making CO2 emission reduction a significant task. Carbon capture technology is an indispensable means of reducing carbon emissions. Membrane separation technology, with its advantages of low energy consumption, simple operation, environmental friendliness, and wide applicability, is the most ideal CO2 capture technology.

[0004] In addition to the membrane material itself and its operating conditions, the selection of the appropriate equipment and membrane assembly combination is crucial to membrane separation effectiveness. In actual industrial applications, the required membrane area and number of membrane modules must be calculated based on the feed gas processing volume and separation requirements. In actual industrial applications, large feed gas processing volumes generally require the use of multiple membrane units for separation. However, the arrangement and combination of membrane modules can still lead to problems such as uneven stress distribution, large size, and inconvenient management. Summary of the Invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides a series-parallel coupled membrane skid device for carbon dioxide separation that adopts membrane separation technology, adopts a series-parallel combination, and performs scientific and reasonable arrangement, with reasonable gravity distribution, which is beneficial to the stability of the membrane assembly and realizes its skid block, thereby facilitating safe and convenient operation and reasonable and clear management, meeting the requirements of actual industrial application, and has the characteristics of high recovery rate, low energy consumption, simple process, easy installation, stable structure, flexible operation, unitized control, etc., and effectively captures carbon dioxide.

[0006] The technical solution adopted by the present invention is: a series-parallel coupled membrane skid device for carbon dioxide separation, including a main pipeline with an air inlet pipeline, an enriched gas pipeline and an exhaust gas branch pipe, the membrane skid device also includes: at least one group of single membrane components, each group of the single membrane components has at least one branch membrane unit; and at least one group of series module components, each group of the series module components is composed of at least two branch membrane units connected in series, and every two adjacent or close branch membrane units are connected respectively by an intermediate branch pipe, and at the same time, several groups of the series module components are connected in parallel between the enriched gas pipeline and the exhaust gas branch pipe; wherein: each group of single membrane components and each group of series module components One of the branch membrane units has a side upper branch pipe connected to the air inlet pipeline to obtain the separated gas, and at least one of them has an enriched gas branch pipe for connecting to the enriched gas pipeline to discharge the enriched gas treated by the branch membrane unit, and at least one of them has an exhaust gas branch pipe for connecting to the exhaust gas pipeline to discharge the exhaust gas treated by the branch membrane unit.

[0007] In at least some embodiments, at least one group of single membrane assemblies and at least one group of series-connected module assemblies are fixedly supported by the membrane skid rack, respectively, to facilitate maintenance and overhaul.

[0008] In at least some embodiments, the membrane skid frame is a bilaterally symmetrical structure and / or a vertically arranged structure, which can arrange at least one group of single membrane components and at least one group of series module components in a reasonable spatial structure to facilitate maintenance and inspection.

[0009] In at least some embodiments, the membrane skid frame comprises: a base for supporting the main pipeline, and columns and beams fixed on the base for supporting the main pipeline and the membrane support units and providing support points for their local fixation.

[0010] In at least some embodiments, the membrane skid frame is a double-layer structure, and each layer is used to support at least one group of single membrane modules or at least one group of series-connected module modules.

[0011] In at least some embodiments, at least one group of single membrane components and at least one group of series module components form a left-right symmetrical structure on their corresponding connection layers, ultimately forming a double-layer, left-right symmetrical structure, in which the upper layer of series module components are placed inverted.

[0012] In at least some embodiments, a membrane supporting unit clamp is provided between the membrane supporting unit and a beam in the membrane skid frame, and a pipeline clamp is provided between the main pipeline and a column and / or a beam in the membrane skid frame.

[0013] In at least some embodiments, the distance between two adjacent single membrane assemblies and two adjacent series module assemblies located on the same side of the main pipeline is 200-300 mm.

[0014] In at least some embodiments, the number of the membrane support units is 8-16, which are staggeredly arranged on both sides of the membrane skid frame.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The use of multiple membrane modules in series and parallel combination, series connection is conducive to increasing the flow rate on the membrane surface, reducing concentration polarization, and improving the separation effect; parallel connection is conducive to handling larger working conditions and meeting actual industrial requirements.

[0017] In actual carbon capture processes, the carbon dioxide capture effect can be improved, and the range of treated separated gases can be wider.

[0018] 2. The membrane skid is arranged in the middle of the symmetrically arranged membrane support components to fix and support each membrane support component and each part of the main pipeline, so that the membrane skid has a compact structure and uniform force. In actual application, the membrane skid occupies a small area, the membrane component is fixed and stable, and it is easy to maintain and manage.

[0019] 3. It adopts a double-layer structure, with the lower layer being a single membrane assembly and the upper layer being a series module assembly. The single membrane assemblies or series module assemblies on the upper and lower layers are connected in parallel, respectively, to distinguish between single membrane assemblies and series module assemblies, which is convenient for the installation of membrane assemblies and simple operation.

[0020] 4. The distance between two adjacent single membrane assemblies and two adjacent series module assemblies located on the same side of the main pipeline is 200-300 mm. The structure is clear and can quickly and clearly handle problems encountered in the flue gas capture process, thereby improving work efficiency.

[0021] 5. Ball valves are installed at the inlet and outlet of single membrane modules and series modules, which are flexible and can be easily adjusted according to the actual working conditions, including the number of membrane modules and the series and parallel connection mode, to achieve better separation effect. When the performance of a membrane module decreases, it can be disconnected and repaired separately without affecting the normal operation of other membrane modules, thus achieving the effect of unitized control.

[0022] In summary, the membrane group skid device for flue gas carbon capture of the present invention has a high recovery rate, is easy to install and disassemble, has unitized control, is flexible to operate, occupies a small space, and is easy and quick to repair and maintain. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional structural diagram of one embodiment of a membrane module skid device for series-parallel coupling of carbon dioxide separation;

[0024] Figure 2 for Figure 1 A front view of an embodiment of the present invention;

[0025] Figure 3 for Figure 1 A left side view of an embodiment of the present invention;

[0026] Figure 4 for Figure 1 A top view of an embodiment of the present invention;

[0027] Figure 5 A three-dimensional structural diagram of another embodiment of a membrane module skid device for series-parallel coupling of carbon dioxide separation;

[0028] Among them: 10-membrane unit, 11-side upper branch pipe, 12-enriched gas branch pipe, 13-exhaust gas branch pipe, 14-middle branch pipe; 20-membrane skid frame, 21-base, 22-column, 23-beam; 30-fixing clamp, 31-membrane unit clamp, 32-pipe clamp; 40-single membrane assembly; 50-series module assembly; 60-main pipeline, 61-inlet pipeline, 62-enriched gas pipeline, 63-exhaust gas pipeline. DETAILED DESCRIPTION

[0029] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the combination or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention. In addition, in the description of the embodiments of the present invention, the device positional relationships such as "up", "down", "front", "back", "left", "right" and the like in all the drawings are based on the directions or positional relationships shown in the accompanying drawings. Figure 1 As standard.

[0031] like Figure 1 As shown, a series-parallel coupled membrane skid device for carbon dioxide separation includes a main pipeline 60 having an inlet pipeline 61, an enriched gas pipeline 62, and a spent gas pipeline 63. The membrane skid device also includes:

[0032] At least one group of single membrane modules 40, each group of the single membrane modules 40 having at least one membrane unit 10; and

[0033] At least one group of series module assemblies 50, each group of the series module assemblies 50 is composed of at least two of the branch membrane units 10 connected in series, and every two adjacent or close branch membrane units 10 are connected respectively through the intermediate branch pipe 14, and at the same time, several groups of the series module assemblies 50 are connected in parallel between the enriched gas pipeline 62 and the exhausted gas pipeline 63; the series module assemblies are conducive to increasing the flow rate on the membrane surface, reducing concentration polarization, and improving the separation effect; the parallel membrane assemblies are conducive to processing a larger processing volume and meeting the process requirements.

[0034] Among them: one of the branch membrane units 10 of each group of single membrane components 40 and each group of series module components 50 has a side upper branch pipe 11 connected to the air inlet pipe 61 to obtain the separated gas, and at least one of them has an enriched gas branch pipe 12 for connecting to the enriched gas pipe 62 to discharge the enriched gas treated by the branch membrane unit, and at least one of them has an exhausted gas branch pipe 13 for connecting to the exhausted gas pipe 63 to discharge the exhausted gas treated by the branch membrane unit.

[0035] This new membrane skid system utilizes series-parallel coupling for optimal carbon dioxide separation and improved membrane separation efficiency. The membrane modules and pipelines are arranged in a scientific and rational, symmetrical pattern, facilitating the skid assembly. The device boasts a clear structure, facilitating easy installation, removal, and transport management of the modules. Operational steps are simple, and the footprint is minimal.

[0036] In at least some embodiments, at least one group of single membrane assemblies 40 and at least one group of series module assemblies 50 are fixedly supported by the membrane skid frame 20 for easy maintenance and overhaul.

[0037] In at least some embodiments, the membrane skid rack 20 is a bilaterally symmetrical structure and / or a vertically arranged structure, which can arrange at least one group of single membrane components 40 and at least one group of series module components 50 in a reasonable spatial structure to facilitate maintenance and inspection.

[0038] In at least some embodiments, the membrane skid frame 20 has: a base 21 for supporting the main pipeline 60, with anchor bolt connection positions reserved on the base frame 21, and columns 22 and beams 23 fixed on the base 21 for supporting the main pipeline 60 and the branch membrane unit 10 and providing support points for their local fixation, and for supporting the exhaust gas pipeline 63, the branch membrane unit 10 and the intake branch pipe 11, the enriched gas branch pipe 12, and the exhaust gas branch pipe 13 connected to the branch membrane unit 10 above the membrane skid frame 20, and providing support points for their local fixation, so that the single membrane assembly 40, the series module assembly 50 and the main pipeline 60 are evenly stressed and have good fixation.

[0039] In at least some embodiments, the membrane skid frame 20 is a double-layer structure, each layer is used to support at least one group of single membrane modules 40 or at least one group of series module modules 50. Figure 1-Figure 3 As shown, a double-layer membrane support unit distribution is used, with the lower layer being a single membrane assembly 40 and the upper layer being a series module assembly 50, wherein the upper membrane support unit 14 is placed upside down. The double-layer structure makes the membrane skid structure clearer and the operation steps are simple, making it easy to use.

[0040] In at least some embodiments, at least one group of single membrane assemblies 40 and at least one group of series module assemblies 50 form a left-right symmetrical structure on their corresponding connecting layers, ultimately forming a double-layer, left-right symmetrical structure, wherein the upper layer of series module assemblies 50 are placed inverted, making the overall structure simple, easy and quick to operate, maintain and install, and improving the overall carbon dioxide separation efficiency.

[0041] In at least some embodiments, a membrane support unit clamp 31 is provided between the membrane support unit 10 and the beam 23 in the membrane skid frame 20, and a pipe clamp 32 is provided between the main pipe 60 and the column 22 and / or the beam 23 in the membrane skid frame 20, for firmly fixing the membrane support unit 10 on the corresponding membrane skid frame 20 to ensure that the entire structure has good stability and firmness, and the position of the membrane assembly is fixed with a fixed clamp, so that the pipeline distribution is scientific and reasonable, and the structural installation distribution of the entire membrane skid block device is more scientific and reasonable, so that the membrane assembly is compactly arranged and occupies a small area.

[0042] In at least some embodiments, Figure 2 and Figure 4 As shown, the distance between the two adjacent single membrane assemblies 10 and the two adjacent series module assemblies 50 located on the same side of the main pipeline 60 is 200-300 mm, which is convenient for later maintenance of the membrane assembly, as well as for observation and timely adjustment during specific implementation, and is convenient for pipe laying.

[0043] In at least some embodiments, the number of the membrane support units 10 is 8-16, which are staggeredly arranged on both sides of the membrane skid frame 20, which can better meet the carbon capture operations under different processing volumes and achieve better carbon emission reduction effects.

[0044] In at least some embodiments, a flow meter, a thermometer, a pressure gauge and a CO2 detector are provided at the enriched gas outlet and the exhaust gas outlet of the main pipeline 60, respectively. At the same time, a flow control device is provided at the flue gas inlet of the intake pipeline 61, and a pressure control device is provided at the exhaust gas pipeline 63 outlet; a check valve is provided at the exhaust gas branch pipeline; and a ball valve is provided at the inlet / outlet of each single membrane assembly 40 and the series module assembly 50. The thermometer is used to check whether the temperature of the main pipeline 60 meets the membrane separation range. When the temperature is too high, the intake flow is cut off to prevent the membrane separation performance from being reduced due to excessive temperature, thereby reducing the service life of the membrane. The CO2 detector is used to check whether the carbon dioxide concentration meets the process requirements. The exhaust gas pipeline 63 is provided with a pressure control, and the pressure difference on both sides of the membrane can be adjusted according to operational requirements to ensure that the separation requirements are met. The exhaust gas branch pipeline is provided with a check valve to prevent exhaust gas from flowing back into other pipelines. Each branch membrane module is equipped with a ball valve at its inlet and outlet, offering flexible operation. The number of modules and the series and parallel configurations can be adjusted conveniently and rationally based on actual operating conditions to achieve optimal separation results. If the performance of a particular module degrades, it can be disconnected and repaired independently without affecting the normal operation of other modules, achieving the desired unitized control effect.

[0045] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A series-parallel coupled membrane skid device for carbon dioxide separation, comprising a main pipeline (60) having an air inlet pipeline (61), an enriched gas pipeline (62) and an exhausted gas pipeline (63), characterized in that: The membrane skid device also includes: At least one group of single membrane assemblies (40), each group of the single membrane assemblies (40) having at least one membrane branch unit (10); and at least one group of series module assemblies (50), each group of the series module assemblies (50) being formed by connecting at least two membrane branches (10) in series, and each two adjacent or close membrane branches (10) being connected respectively through an intermediate branch pipe (14), and at the same time, a plurality of groups of the series module assemblies (50) being connected in parallel between the enriched gas pipeline (62) and the exhausted gas pipeline (63); Wherein: one of the branch membrane units (10) of each group of single membrane assemblies (40) and each group of series module assemblies (50) has a side upper branch pipe (11) connected to the air inlet pipe (61) to obtain the separated gas, and at least one of them has an enriched gas branch pipe (12) for connecting to the enriched gas pipe (62) to discharge the enriched gas processed by the branch membrane unit, and at least one of them has an exhausted gas branch pipe (13) for connecting to the exhausted gas pipe (63) to discharge the exhausted gas processed by the branch membrane unit.

2. The series-parallel coupled membrane skid device for carbon dioxide separation according to claim 1, characterized in that: At least one group of single membrane assemblies (40) and at least one group of series module assemblies (50) are respectively fixedly supported by a membrane skid frame (20).

3. The series-parallel coupled membrane skid device for carbon dioxide separation according to claim 2, characterized in that: The membrane skid frame (20) is a bilaterally symmetrical structure and / or a vertically arranged structure.

4. The series-parallel coupled membrane skid device for carbon dioxide separation according to claim 3, characterized in that: The film skid frame (20) has: a base (21) for supporting the main pipe (60), and A column (22) and a beam (23) fixed on the base (21) for supporting the main pipeline (60) and the membrane support unit (10) and providing support points for their local fixation.

5. The series-parallel coupled membrane skid device for carbon dioxide separation according to claim 4, characterized in that: The membrane skid frame (20) is a double-layer structure, with each layer being used to support at least one group of single membrane assemblies (40) or at least one group of series module assemblies (50).

6. The series-parallel coupled membrane skid device for carbon dioxide separation according to claim 5, characterized in that: At least one group of single membrane components (40) and at least one group of series module components (50) form a left-right symmetrical structure on their corresponding connection layers, ultimately forming a double-layer, left-right symmetrical structure, wherein the upper layer of the series module components (50) are placed upside down.

7. The series-parallel coupled membrane skid device for carbon dioxide separation according to claim 6, characterized in that: A membrane support unit clamp (31) is provided between the membrane support unit (10) and the crossbeam (23) in the membrane skid frame (20), and a pipeline clamp (32) is provided between the main pipeline (60) and the column (22) and / or crossbeam (23) in the membrane skid frame (20).

8. The series-parallel coupled membrane skid device for carbon dioxide separation according to claim 7, characterized in that: The distance between two adjacent single membrane assemblies (40) and two adjacent series module assemblies (50) located on the same side of the main pipeline (60) is 200-300 mm.

9. A series-parallel coupled membrane skid device for carbon dioxide separation according to any one of claims 1 to 8, characterized in that: The number of the membrane support units (10) is 8-16, and they are arranged alternately on both sides of the membrane skid frame (20).

10. The series-parallel coupled membrane skid device for carbon dioxide separation according to claim 9, characterized in that: A flow meter, a thermometer, a pressure gauge and a CO2 detector are respectively provided at the enriched gas outlet and the exhausted gas outlet of the main pipeline (60); a flow control device is provided at the flue gas inlet of the air inlet pipeline (61); and a pressure control device is provided at the exhaust gas pipeline (63) outlet; a check valve is provided at the exhaust gas branch pipeline; and a ball valve is provided at the inlet / outlet of each of the single membrane assembly (40) and the series module assembly (50).

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