Membrane group skid device for flue gas carbon capture

Abstract

The utility model relates to a membrane group skid device for flue gas carbon capture, which is provided with at least one group of symmetrically arranged branch membrane components and a main pipeline, and is also provided with a membrane skid frame which is arranged in the middle of the symmetrically arranged branch membrane components and is used for fixing and supporting each branch membrane component and each part of the main pipeline; the lower end of each branch membrane assembly is connected with the lower end of the main pipeline through a lower-end branch pipe to obtain flue gas, and the side surface and the upper end of each branch membrane assembly are connected to the side surface and the upper end of the main pipeline through a side pipeline and an upper branch pipe respectively to release enriched gas and exhaust gas obtained after treatment of the branch membrane assemblies respectively; and the enriched gas and the exhaust gas flow out from the corresponding main pipelines. The membrane group skid device disclosed by the utility model is high in recovery rate, simple in process, convenient to mount and dismount, low in cost, high in flue gas separation efficiency, small in occupied space and convenient and fast to maintain and repair, and energy consumption and unitized mounting are realized.

Description

Technical Field

[0001] The utility model relates to the technical field of chemical engineering, in particular to a membrane group skid device for flue gas carbon capture. Background Art

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

[0003] The flue gas emitted after the combustion of fossil fuels contains a large amount of CO2 and N2. Directly emitting it into the atmosphere will continuously aggravate the greenhouse effect. Therefore, capturing CO2 in the flue gas can effectively reduce the greenhouse effect.

[0004] Membrane separation is used to capture CO2 in flue gas. It has the advantages of low energy consumption, easy operation, and compact equipment. It is an ideal flue gas CO2 capture technology.

[0005] The existing membrane groups are made of different membrane materials and have a certain membrane area. The corresponding membrane area requirements and the number of membrane groups need to be calculated according to the flue gas treatment volume. Due to their large mass, there are still defects in arranging the membrane groups so that their force distribution is uniform, which is convenient for actual production operations and ensuring product gas indicators.

[0006] For larger flue gas treatment volumes, the membrane separation unit needs to adopt multiple membrane units. Therefore, the membrane groups need to be arranged scientifically and reasonably to achieve skid-mounted installation, which is conducive to safe and convenient operation and management of the membrane separation unit. Most of the existing membrane group separation skid processing devices are installed as a whole, and the installation bracket, frame and access pipes are relatively complicated, which cannot meet the installation requirements of lightweight and modular units. Utility Model Content

[0007] In order to overcome the shortcomings of the above-mentioned prior art, the utility model provides a membrane group skid device for flue gas carbon capture, which adopts membrane separation technology to capture a purer carbon dioxide product, has a high recovery rate, simple process, low energy consumption, convenient and quick installation, unitized installation, and effectively realizes the capture and utilization of carbon dioxide.

[0008] The technical solution adopted by the utility model is: a membrane group skid device for flue gas carbon capture, having at least one group of symmetrically arranged branch membrane components and a main pipeline, the membrane group skid device also having: a membrane skid frame, the membrane skid frame is arranged in the middle part of the symmetrically arranged branch membrane components, and is used to fix and support each branch membrane component and each part of the main pipeline; wherein: the lower end of the branch membrane unit of each of the branch membrane components is connected to the lower end of the main pipeline through the lower end branch pipe to obtain flue gas, and the side and upper end of the branch membrane unit of each of the branch membrane components are connected to the side and upper end of the main pipeline through the side pipeline and the upper branch pipe respectively, and the enriched gas and the exhausted gas obtained after the branch membrane component is processed are respectively released, and the enriched gas and the exhausted gas flow out from the corresponding main pipeline.

[0009] In the technical solution, the membrane skid frame is configured with: a base, the base is used to support the main pipeline; and columns and beams, the columns and beams are connected to the base.

[0010] In the technical solution, fixing clamps are provided between the membrane support assembly and the main pipeline and the columns and / or beams respectively.

[0011] In the technical solution, a plurality of side pipes and a plurality of upper branch pipes connected to the main pipe are arranged alternately.

[0012] In this technical solution, the distance between the membrane support assembly located on the same side of the main pipeline and the column or beam of the membrane skid frame closest to it gradually increases or decreases in a certain order, and the distance between the membrane support assembly and the column or beam of the membrane skid frame closest to it is not less than 200 mm.

[0013] In this technical solution, the membrane skid frame is made entirely of steel sections.

[0014] In the technical solution, a connection position for anchor bolts is reserved on the base.

[0015] In the technical solution, the distance between two adjacent branch membrane modules located on the same side of the main pipeline is 300-400 mm.

[0016] In the technical solution, the number of the branch membrane modules is 6-10, and they are arranged alternately on both sides of the main pipeline.

[0017] In the present technical solution, the main pipeline is provided with flow meters, thermometers, pressure gauges and CO2 detectors at the enriched gas outlet and the exhausted gas outlet respectively. Meanwhile, the flue gas inlet of the main pipeline is provided with flow control, and the exhausted gas outlet is provided with a pressure control device. The inlet / outlet of each membrane assembly is provided with a ball valve.

[0018] Compared with the prior art, the beneficial effects of the utility model are:

[0019] 1. The membrane skid frame is arranged in the middle of the symmetrically arranged membrane support components, and is used to fix and support each membrane support component and each part of the main pipeline, so that each membrane support component and the main pipeline are reasonably arranged around the membrane skid frame. This structure is not only convenient for connecting each membrane support component with the main pipeline, but also convenient for repair and maintenance.

[0020] 2. Arrange several groups of branch membrane components symmetrically around the membrane skid frame to facilitate the main pipeline to collect flue gas and facilitate each branch membrane component to connect the treated enriched gas and exhausted gas to the main pipeline for outflow.

[0021] 3. The membrane skid frame is arranged in the middle of the symmetrically arranged membrane support components. The length can be reasonably adjusted according to the number of membrane support components to be installed, which is convenient for design.

[0022] 4. The distance between the supporting membrane assembly located on the same side of the main pipeline and the column or beam of the membrane skid frame closest to it gradually increases or decreases in a certain order, which is convenient for observation and adjustment, and can quickly and clearly handle problems encountered in the flue gas capture process, thereby improving work efficiency.

[0023] In summary, the membrane group skid device for flue gas carbon capture of the utility model has high recovery rate, simple process, easy installation and disassembly, low cost, high flue gas separation efficiency, small space, low energy consumption, unitized installation, and convenient and quick maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional structural diagram of one embodiment of a membrane group skid device for flue gas carbon capture;

[0025] Figure 2 for Figure 1 A front view of an embodiment of the present invention;

[0026] Figure 3 for Figure 1 A top view of an embodiment of the present invention;

[0027] Figure 4 A three-dimensional structural diagram of another direction of an embodiment of a membrane group skid device for flue gas carbon capture;

[0028] Wherein: 10-membrane support assembly, 11-membrane support unit, 12-lower branch pipe, 13-side pipe, 14-upper branch pipe; 20-main pipe, 30-membrane skid frame, 31-base, 32-column, 33-beam; 40-fixing clamp. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and 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 only used to explain the present invention, and cannot be understood 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", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the combination or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on 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", etc. in all the drawings are based on the orientation or positional relationship shown in the drawings. Figure 1 As standard.

[0031] like Figure 1 and Figure 4 As shown, a membrane group skid device for flue gas carbon capture has at least one set of symmetrically arranged branch membrane components 10 and a main pipeline 20. The membrane group skid device also has:

[0032] The membrane skid frame 30 is arranged in the middle of the symmetrically arranged membrane support assemblies 10 and is used to fix and support each membrane support assembly 10 and each part of the main pipeline 20;

[0033] Wherein: the lower end of the membrane unit 11 of each membrane assembly 10 is connected to the lower end of the main pipeline 20 through the lower end branch pipe 12 to obtain flue gas, and the side and upper end of the membrane unit 11 of each membrane assembly 10 are connected to the side and upper end of the main pipeline 20 through the side pipe 13 and the upper branch pipe 14 respectively to release the enriched gas and exhausted gas obtained after the membrane assembly 10 is processed, and the enriched gas and exhausted gas flow out from the corresponding main pipeline 20. The membrane assembly skid device of the utility model scientifically and reasonably arranges the position of the membrane assembly, the air inlet, the enriched gas port, the exhausted gas port and the skid device structure to realize its skid installation, which is conducive to safe and convenient operation and management of the membrane separation unit. The device has a simple structure, is easy to install and disassemble, has low cost, high flue gas separation efficiency, and occupies a small space.

[0034] In the above embodiment, from Figure 4It can be seen that the membrane skid frame 30 is configured with: a base 31, the base 31 is used to support the main pipeline 20; and columns 32 and beams 33, the columns 32 and beams 33 are connected to the base 31, and are used to provide support points for the local fixation of the membrane support assembly 10 and the main pipeline 20, so as to facilitate the connection and fixation of the membrane skid frame 30 with the membrane support assembly 10 and the main pipeline 20 respectively, and improve the force uniformity of the membrane support assembly 10 and the main pipeline 20.

[0035] In at least one embodiment, Figure 2 and Figure 3 As shown, a fixing clamp 40 is provided between the membrane support assembly 10 and the main pipeline 20 and the column 32 and / or the crossbeam 33 respectively, for fixing the main pipeline 20 and the membrane support assembly 10 by using the membrane skid frame 30 as a supporting carrier, so as to rationalize the structural installation layout of the entire membrane group skid device and realize a compact structural design.

[0036] In at least one embodiment, Figure 4 As shown, several side pipes 13 and several upper branch pipes 14 connected to the main pipe 20 are arranged alternately. On the one hand, the membrane support components can be reasonably arranged so that their force distribution is uniform, which is convenient for actual production operations and ensuring product gas indicators. On the other hand, it can also facilitate observation and identification of installation arrangements.

[0037] In at least one embodiment, the distance between the membrane supporting assembly 10 located on the same side of the main pipeline 20 and the column 32 or beam 33 of the membrane skid frame 30 closest to it gradually increases or decreases in a certain order, and the distance between the membrane supporting assembly 10 and the column 32 or beam 33 of the membrane skid frame 30 closest to it is not less than 200 mm; thereby facilitating convenient maintenance of the membrane supporting assembly 10 at a later stage, as well as timely observation and adjustment during specific implementation.

[0038] In at least one embodiment, the membrane skid frame 30 is made entirely of steel sections, and ready-made sections can be used during processing without additional processing and treatment, which has low cost and short construction period, and is convenient for providing support points for fixed connection with the membrane support assembly 10 and the main pipeline 20.

[0039] In at least one embodiment, a connection position of anchor bolts is reserved on the base 31 to fix the entire membrane assembly skid device, ensuring that it can be used stably during operation without being disturbed by the external environment.

[0040] In at least one embodiment, the distance between two adjacent branch membrane assemblies 10 located on the same side of the main pipeline 20 is 300-400 mm, which is convenient for operation and observation.

[0041] In at least one embodiment, the number of the branched membrane assemblies 10 is 6-10, which are arranged alternately on both sides of the main pipeline 20, so as to better meet the requirements of flue gas carbon capture.

[0042] In at least one embodiment, the main pipeline 20 is provided with a flow meter, a thermometer, a pressure gauge and a CO2 detector at the enriched gas outlet and the exhausted gas outlet, respectively. At the same time, the flue gas inlet of the main pipeline 20 is provided with a flow control device, and the exhaust gas outlet is provided with a pressure control device; the inlet / outlet of each branch membrane assembly 10 is provided with a ball valve, which can realize the separate automatic control of the membrane group. The main pipeline of the raw flue gas inlet is provided with a flow meter, a thermometer, a pressure gauge and a CO2 detector, wherein a flow control is provided, and the flue gas flow is controlled by the regulating valve on the main pipeline of the flue gas inlet; the main pipeline of the product enriched gas is provided with a flow meter, a thermometer, a pressure gauge and a CO2 detector, wherein a pressure control is provided, and the regulating valve of the main pipeline of the exhaust gas is used to control the pressure after the membrane to achieve the pressure difference on both sides of the membrane to meet the separation requirements. At the same time, a ball valve is installed at the inlet / outlet of each branch membrane assembly, and the number of participating membrane groups can be selected according to the processing volume to realize the separate control of the membrane group.

[0043] The specific implementation steps of the embodiment of this structure are as follows: A. The raw flue gas that meets the membrane entry conditions after pretreatment is sent into the membrane assembly skid device through the lower air intake main pipeline. The air intake main pipeline is equipped with flow meters and other related adjustment controls, which can be adjusted according to the on-site flue gas treatment volume; B. The side pipeline is for enriching and concentrating CO2 product gas, and is equipped with flow meters, thermometers, pressure gauges and CO2 detectors, etc., to check whether it meets product requirements; C. The upper main pipeline is the exhaust gas main pipeline, which is equipped with pressure control. The pressure difference on both sides of the membrane can be adjusted according to operational requirements to ensure that the separation requirements are met.

[0044] The embodiments disclosed in the present utility model are preferred embodiments, but are not limited thereto. Ordinary technicians in this field can easily understand the spirit of the present utility model based on the above embodiments and make different extensions and changes. However, as long as they do not deviate from the spirit of the present utility model, they are all within the protection scope of the present utility model.

Claims

1. A membrane assembly skid device for flue gas carbon capture, comprising at least one set of symmetrically arranged membrane support modules (10) and a main pipeline (20), characterized in that: The membrane group chemical skid device also has: A membrane skid frame (30), the membrane skid frame (30) being arranged in the middle of the symmetrically arranged membrane support assemblies (10) and being used for fixing and supporting each membrane support assembly (10) and each part of the main pipeline (20); Wherein: the lower end of the branch membrane unit (11) of each of the branch membrane components (10) is connected to the lower end of the main pipeline (20) through the lower branch pipe (12) to obtain flue gas, and the side and upper end of the branch membrane unit (11) of each of the branch membrane components (10) are connected to the side and upper end of the main pipeline (20) through the side pipe (13) and the upper branch pipe (14) respectively to release the enriched gas and the exhausted gas obtained after the processing of the branch membrane component (10), and the enriched gas and the exhausted gas flow out from the corresponding main pipeline (20).

2. The membrane group skid device for flue gas carbon capture according to claim 1 is characterized in that: The membrane skid frame (30) is equipped with: a base (31), the base (31) being used to support the main pipeline (20); and The upright posts (32) and the cross beams (33) are connected to the base (31) and are used to provide support points for local fixation of the membrane support assembly (10) and the main pipeline (20).

3. The membrane group skid device for flue gas carbon capture according to claim 2 is characterized in that: A fixing clamp (40) is arranged between the membrane support assembly (10) and the main pipeline (20) and the columns (32) and / or the crossbeam (33) respectively.

4. The membrane group skid device for flue gas carbon capture according to claim 3 is characterized in that: A plurality of side pipes (13) and a plurality of upper branch pipes (14) connected to the main pipe (20) are arranged in a staggered manner.

5. The membrane group skid device for flue gas carbon capture according to claim 4 is characterized in that: The distance between the membrane supporting assembly (10) located on the same side of the main pipeline (20) and the column (32) or beam (33) of the membrane skid frame (30) closest to it gradually increases or decreases in a certain order, and the distance between the membrane supporting assembly (10) and the column (32) or beam (33) of the membrane skid frame (30) closest to it is not less than 200 mm.

6. The membrane group skid device for flue gas carbon capture according to claim 5 is characterized in that: The membrane skid frame (30) is made entirely of steel.

7. A membrane group skid device for flue gas carbon capture according to claim 2 or 6, characterized in that: An anchor bolt connection position is reserved on the base (31).

8. The membrane group skid device for flue gas carbon capture according to claim 7 is characterized in that: The distance between two adjacent branch membrane modules (10) located on the same side of the main pipeline (20) is 300-400 mm.

9. The membrane group skid device for flue gas carbon capture according to claim 8 is characterized in that: The number of the branch membrane assemblies (10) is 6-10, and they are arranged alternately on both sides of the main pipeline (20).

10. The membrane group skid device for flue gas carbon capture according to claim 8, characterized in that: The main pipeline (20) is provided with a flow meter, a thermometer, a pressure gauge and a CO2 detector at the enriched gas outlet and the exhausted gas outlet, respectively. At the same time, the flue gas inlet of the main pipeline (20) is provided with a flow control device, and the exhausted gas outlet is provided with a pressure control device; the inlet / outlet of each of the membrane modules (10) is provided with a ball valve.

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