Cement production system with carbon dioxide enriching and capturing device

Abstract

The utility model provides a cement production system with a carbon dioxide enriching and capturing device, which comprises a cement kiln and a transmission pipeline assembly, the carbon dioxide enriching and capturing device comprises an absorption tower, the transmission pipeline assembly is communicated with the cement kiln and the absorption tower, and the cement production system further comprises a pipeline supporting assembly, the conveying pipeline assembly comprises a fan, a first conveying pipeline and a second conveying pipeline, the conveying pipeline assembly further comprises pipeline butt joint structures, the pipeline butt joint structures are arranged at the two ends of the first conveying pipeline, and the first conveying pipeline can be detachably connected with the cement kiln in butt joint with the first conveying pipeline and the fan; and / or the pipeline butt joint structures are arranged at the two ends of the second conveying pipeline, so that the second conveying pipeline can be detachably connected with an absorption tower and a fan which are in butt joint with the second conveying pipeline, and the pipeline supporting assembly is used for being arranged at the bottom of the first conveying pipeline and / or the second conveying pipeline. The supporting device is used for supporting the first conveying pipeline and / or the second conveying pipeline in the process of disassembling and assembling the first conveying pipeline and / or the second conveying pipeline.

Description

TECHNICAL FIELD

[0001] The utility model relates to cement kiln technical field especially, it is cement production system with carbon dioxide enrichment trapping device. BACKGROUND

[0002] Fuel combustion and raw material decomposition in cement production process can produce a large amount of CO2, and its emission concentration is even higher than that of coal-fired power plant boiler flue gas, so the cement industry, like the steel and coal power industry, has become the main source of CO2 emission in China, and the CO2 capture device is composed of flue gas pretreatment system, packing absorption tower, packing regeneration tower, exhaust gas washing system, solution boiler, amine recovery heater, product gas treatment system and system water balance maintenance system.

[0003] The existing cement kiln flue gas carbon dioxide enrichment trapping device is that the flue gas is sent into the absorption tower by the fan, CO2 is absorbed by the ammonia solution, and the tail gas is discharged into the atmosphere from the top of the tower. During the use of the cement kiln, the surface temperature of the cement kiln is in the range of 150-350℃, and the cement kiln usually adopts natural cooling to reduce the temperature of the surface of the cement kiln. However, this method can cause waste of residual heat and cannot be recycled. Moreover, the fan and the absorption tower of the existing device are connected to each other through a transmission pipeline, and the input end and the output end of the transmission pipeline are respectively welded to the connecting ends of the fan and the absorption tower. During the long-term process of inputting high-temperature flue gas into the absorption tower through the transmission pipeline, the high-temperature flue gas can cause burns and damage to the inner wall of the transmission pipeline. Moreover, the transmission pipeline is inconvenient to disassemble and replace through the welding installation method. SUMMARY

[0004] Therefore, the utility model embodiment provides a cement production system with carbon dioxide enrichment trapping device to eliminate or improve one or more defects in the prior art.

[0005] The utility model provides a cement production system with carbon dioxide enrichment trapping device, including cement kiln, transmission pipeline subassembly, the carbon dioxide enrichment trapping device includes absorption tower, transmission pipeline subassembly intercommunication cement kiln and absorption tower, the cement production system still includes pipeline support subassembly.

[0006] The transmission pipeline subassembly includes fan, first transmission pipeline and second transmission pipeline, wherein the smoke outlet of the cement kiln is fixed or detachably connected with the flue gas input end of the first transmission pipeline, the flue gas output end of the first transmission pipeline is fixed or detachably connected with the smoke inlet of the fan, the smoke outlet of the fan is fixed or detachably connected with the flue gas input end of the second transmission pipeline, and the flue gas output end of the second transmission pipeline is fixed or detachably connected with the smoke inlet of the absorption tower.

[0007] The transmission pipeline assembly further comprises a pipeline butt joint structure, wherein the pipeline butt joint structure is arranged at both ends of the first transmission pipeline, so that the cement kiln and the fan to which the first transmission pipeline is butt jointed are detachably connected; and / or the pipeline butt joint structure is arranged at both ends of the second transmission pipeline, so that the absorption tower and the fan to which the second transmission pipeline is butt jointed are detachably connected.

[0008] The pipeline support assembly is arranged at the bottom of the first transmission pipeline and / or the second transmission pipeline, and is used for supporting the first transmission pipeline and / or the second transmission pipeline during dismounting and mounting.

[0009] In some embodiments of the present application, the cement production system further comprises a waste heat recovery device, the waste heat recovery device comprises a heat collector, a waste heat storage device and a heat pipe, the heat collector is connected with one end of the heat pipe, the waste heat storage device is connected with the other end of the heat pipe, the heat collector is arranged on the outer wall of the cement kiln or the transmission pipeline assembly, the waste heat storage device and the heat pipe are provided with a heat-conducting fluid medium, the heat pipe is used for transmitting the waste heat absorbed by the heat collector from the wall of the cement kiln or the transmission pipeline assembly to the waste heat storage device, and the waste heat storage device is used for storing waste heat.

[0010] In some embodiments of the present application, the waste heat recovery device further comprises a heat preservation cover, and the heat preservation cover is arranged outside the heat collector and / or the waste heat storage device.

[0011] In some embodiments of the present application, the pipeline support assembly comprises a support base, an extension mechanism, a spring and a support piece, one end of the support base is connected with the extension mechanism, the other end of the extension mechanism is connected with the support piece, the spring is sleeved outside the extension mechanism, one end of the spring is fixedly connected with the support piece, and the other end of the spring is fixedly connected with the support base.

[0012] The extension mechanism is provided with a sleeve and a sliding rod, the sliding rod is slidably connected with the inner wall of the sleeve, the extension direction of the extension mechanism is the same as the length direction of the spring, the extension mechanism and the spring are matched with each other, the support height of the pipeline support assembly is adjusted during the process of dismounting and mounting the first transmission pipeline and / or the second transmission pipeline, the support base is used for providing bottom support for the extension mechanism, and the support piece is used for contacting and placing the first transmission pipeline and / or the second transmission pipeline.

[0013] In some embodiments of the present application, the support piece is a sheet-shaped structure with an arc surface, the middle part of the arc surface is concave downward, and is used for contacting and fitting with the wall surface of the first transmission pipeline and / or the second transmission pipeline.

[0014] In some embodiments of the utility model, the support base is fixedly connected with the sidewall or bottom surface of the absorption tower.

[0015] In some embodiments of the utility model, the pipeline butt joint structure comprises a first flange and a second flange, the flange is arranged on the flue gas input end and the flue gas output end of the second transmission pipeline, the flange is arranged on the smoke outlet of the fan and the smoke inlet of the absorption tower, and the flange is arranged on the flue gas input end and the flue gas output end of the first transmission pipeline, the flue gas outlet of the cement kiln and the smoke inlet of the fan, one of the first flange and the second flange is a fixed flange, and the other is a rotary flange.

[0016] In some embodiments of the utility model, the pipeline butt joint structure further comprises an annular protruding portion and an annular groove, the annular protruding portion is arranged on the first flange, the annular groove is arranged on the second flange, or the annular protruding portion is arranged on the second flange, the annular groove is arranged on the first flange, the annular protruding portion and the annular groove are located at the butt joint end face of the first flange and the second flange, so that the connecting position of the first flange and the second flange in the connected state forms a mutual clamping stop structure.

[0017] In some embodiments of the utility model, the second transmission pipeline is provided with a transverse conveying section, the pipeline of the transverse conveying section is horizontally arranged, and the bottom of the second transmission pipeline is supported by the pipeline support assembly.

[0018] In some embodiments of the utility model, the fan is connected with the second transmission pipeline through a first connecting pipe, one end of the first connecting pipe is connected with the smoke outlet of the fan, and the other end of the first connecting pipe is connected with the flue gas input end of the second transmission pipeline, the second transmission pipeline is connected with the absorption tower through a second connecting pipe, one end of the second connecting pipe is connected with the smoke inlet of the absorption tower, and the other end of the second connecting pipe is connected with the flue gas output end of the second transmission pipeline.

[0019] According to the technical scheme of the cement production system with the carbon dioxide enrichment and capture device in the utility model embodiment, the beneficial effects can be obtained, at least including:

[0020] The pipeline support assembly of the cement production system with the carbon dioxide enrichment and capture device can cooperate with the pipeline butt joint structure, support the flue gas transmission pipeline in the disassembly and assembly process, and is favorable for reducing the disassembly and assembly difficulty of the flue gas transmission pipeline and facilitating the replacement or maintenance of the flue gas transmission pipeline by the operating personnel.

[0021] The additional advantages, objects, and features of the present application will be apparent from the following description, taken in conjunction with the accompanying drawings, and from the detailed description that follows, and will be readily understood by those skilled in the art in view of the detailed description, which describes several embodiments by way of illustration. The purpose and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0022] Those skilled in the art will appreciate that the objects and advantages of the application can be practiced without resorting to the details of the following description, and that the application can be practiced with reference to the appended claims. The objects and advantages of the application will become apparent in light of the following detailed description and accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description, serve to explain the principles of the application. The components in the drawings are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the application. For purposes of clarity and understanding, it is expressly intended that some portions of the drawings be used as parts of the specification to illustrate certain aspects of the application. In the drawings:

[0024] Figure 1 It is a whole structure schematic view of cement production system with carbon dioxide enrichment capturing device in an embodiment of the present application.

[0025] Figure 2 It is a schematic view of pipe butt joint structure of transmission pipeline assembly in an embodiment of the present application.

[0026] Figure 3 It is a structure schematic view of waste heat recovery device of cement production system with carbon dioxide enrichment capturing device in an embodiment of the present application.

[0027] Figure 4 It is a part structure schematic view of pipe butt joint structure in an embodiment of the present application.

[0028] Figure 5 It is another part structure schematic view of pipe butt joint structure in an embodiment of the present application.

[0029] REFERENCE NUMERALS:

[0030] 1, rack; 2, cement kiln; 3, first transmission pipeline; 4, fan; 5, first connecting pipe; 6, second transmission pipeline; 7, waste heat recovery device; 701, heat preservation cover; 702, heat conducting pipe; 703, waste heat storage; 704, heat collector; 8, pipeline support assembly; 801, first flange; 802, second flange; 803, support base; 804, telescopic mechanism; 805, spring; 806, support; 807, annular groove; 808, annular protrusion; 9, absorption tower; 10, second connecting pipe. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application will be further described in detail below with reference to the embodiments and drawings. Here, the illustrative embodiments of the present application and the description thereof are used to explain the present application, but not as a limitation of the present application.

[0032] Here, it should also be noted that, in order to avoid obscuring the present application due to unnecessary details, only the structures and / or processing steps closely related to the scheme according to the present application are shown in the drawings, and other details not closely related to the present application are omitted.

[0033] It should be emphasized that the term "comprise / comprising" as used herein means the presence of a feature, element, step or component, but does not exclude the presence or addition of one or more other features, elements, steps or components.

[0034] Here, it should also be noted that, if not specifically stated, the term "connection" as used herein can not only mean direct connection, but also indirect connection with the presence of an intermediate.

[0035] In the following, embodiments of the present application will be described with reference to the accompanying drawings. In the drawings, the same reference numerals represent the same or similar parts, or the same or similar steps.

[0036] In order to solve the problem that the flue gas transmission pipeline in the cement production system is not convenient to disassemble and replace, the present application provides a cement production system with a carbon dioxide enrichment and capture device. Unlike the welding connection mode of the flue gas transmission pipeline in the prior art, the cement production system in the present application embodiment not only can realize the disassembly and replacement of the flue gas transmission pipeline, but also can support the transmission pipeline during the replacement of the flue gas transmission pipeline, thereby reducing the disassembly difficulty of the transmission pipeline.

[0037] The embodiment of the utility model provides a cement production system with carbon dioxide enrichment and capture device, including cement kiln 2, transmission pipeline subassembly, carbon dioxide enrichment and capture device includes absorption tower 9, carbon dioxide enrichment and capture device through the liquid absorbent or absorption layer that sets up in absorption tower 9 inside and the flue gas containing carbon dioxide are in full contact, absorption or neutralization reaction occurs, thereby removes or captures carbon dioxide in flue gas, transmission pipeline subassembly links cement kiln 2 with absorption tower 9, the cement production system still includes pipeline support subassembly 8.

[0038] As Figure 1 The transmission pipeline subassembly includes a fan 4, a first transmission pipeline 3 and a second transmission pipeline 6; wherein the smoke outlet of the cement kiln 2 is fixedly or detachably connected with the flue gas input end of the first transmission pipeline 3, the flue gas output end of the first transmission pipeline 3 is fixedly or detachably connected with the smoke inlet of the fan 4, the smoke outlet of the fan 4 is fixedly or detachably connected with the flue gas input end of the second transmission pipeline 6, and the flue gas output end of the second transmission pipeline 6 is fixedly or detachably connected with the smoke inlet of the absorption tower 9. The high-temperature flue gas generated by the combustion of the smoke in the cement kiln 2 successively passes through the cement kiln 2, the first transmission pipeline 3, the fan 4 and the second transmission pipeline 6 and finally enters the absorption tower 9 inside to be absorbed or captured.

[0039] The transmission pipeline subassembly further includes a pipeline butt joint structure; wherein the pipeline butt joint structure is arranged at both ends of the first transmission pipeline 3, so that the cement kiln 2 and the fan 4, which can be butt jointed with the first transmission pipeline 3, are detachably connected; and / or the pipeline butt joint structure is arranged at both ends of the second transmission pipeline 6, so that the absorption tower 9 and the fan 4, which can be butt jointed with the second transmission pipeline 6, are detachably connected.

[0040] The pipeline support subassembly 8 is arranged at the bottom of the first transmission pipeline 3 and / or the second transmission pipeline 6, and is used for supporting the first transmission pipeline 3 and / or the second transmission pipeline 6 during disassembly and assembly.

[0041] The butt joint structure in the above transmission pipeline subassembly has various arrangement schemes, for example, the butt joint structure can be arranged at both ends of the first transmission pipeline 3, so as to realize the disassembly and replacement of the first transmission pipeline 3; the butt joint structure can also be arranged at both ends of the second transmission pipeline 6, so as to realize the disassembly and replacement of the second transmission pipeline 6; or the butt joint structures are arranged at both ends of the first transmission pipeline 3 and the second transmission pipeline 6, so as to flexibly adjust the transmission pipeline subassembly. By installing the first transmission pipeline 3 and the second transmission pipeline 6 with different lengths and sizes, the installation position of the fan can be flexibly adjusted, and the arrangement mode of the entire cement production system is more flexible, which is conducive to adapting to different production scenes.

[0042] Since the first transmission pipeline 3 and the second transmission pipeline 6 internally transmit high-temperature flue gas, in the use process, the transmission pipeline has strong corrosiveness, and is prone to breakage after a period of use, the connection structure is arranged, the damaged transmission pipeline can be directly replaced, compared with the welding installation of the transmission pipeline, the direct replacement of the transmission pipeline can reduce the downtime of the cement production system, and the overall production efficiency of the cement production system is improved, and economic benefits are improved.

[0043] The pipeline support assembly 8 can provide bottom support during replacement of the transmission pipeline, and the transmission pipeline needs to be installed to ensure that the flue gas input end and the flue gas output end are aligned with the docking interfaces, so as to prevent gas leakage after connection, and the weight of the transmission pipeline is relatively large due to the material and size of the transmission pipeline itself, so a plurality of workers need to cooperate with each other or use a mechanical lifting appliance to assist in work during disassembly and assembly, the pipeline support assembly 8 is arranged at the bottom of the transmission pipeline, the gravity during disassembly and assembly can be reduced, the work burden of workers is reduced, and daily disassembly and assembly and replacement are facilitated.

[0044] In the above embodiment, the pipeline docking structure can realize disassembly and replacement of the flue gas transmission pipeline, the cement production system is also provided with the pipeline support assembly 8, the transmission pipeline can be supported during replacement of the flue gas transmission pipeline, and the difficulty of disassembly and assembly of the transmission pipeline is reduced, and workers can conveniently replace or maintain the flue gas transmission pipeline.

[0045] In some embodiments of the utility model, as shown in Figure 3 The cement production system further comprises a waste heat recovery device 7, the waste heat recovery device 7 comprises a heat collector 704, a waste heat storage device 703 and a heat pipe 702, the heat collector 704 is connected with one end of the heat pipe 702, the waste heat storage device 703 is connected with the other end of the heat pipe 702, the heat collector 704 is arranged at the outer wall part of the cement kiln 2 or the transmission pipeline assembly, the waste heat storage device 703 and the heat pipe 702 are provided with heat-conducting fluid medium, the heat pipe 702 is used for transmitting the waste heat absorbed by the heat collector 704 from the wall part of the cement kiln 2 or the transmission pipeline assembly to the waste heat storage device 703, and the waste heat storage device 703 is used for storing waste heat.

[0046] When the waste heat of the cement kiln 2 needs to be recycled and collected, since the heat collector 704 is arranged outside the cement kiln 2, the heat collector 704 collects the waste heat on the surface of the cement kiln 2, since the heat pipe 702 connects the heat collector 704 and the waste heat storage 703, and the heat-conducting fluid medium is arranged in the heat pipe 702 and the waste heat storage 703, the heat-conducting fluid medium in the heat pipe 702 conducts the heat collected by the heat collector 704 to the inside of the waste heat storage 703, and the waste heat storage 703 collects and stores the waste heat through the heat-conducting fluid medium inside.

[0047] Further, the heat collector 704 can be arranged in a sleeve shape consistent with the shape of the surface of the cement kiln 2, and the heat collector 704 is sleeved on the surface of the cement kiln 2, which is beneficial to improve the heat absorption efficiency of the heat collector 704. In addition, corresponding heat collectors 704 can also be arranged on the outer wall of the transmission pipeline assembly for collecting the waste heat of the transmission pipeline, which is beneficial to increase the amount of recycled waste heat.

[0048] In some embodiments of the present application, as shown in Figure 1 and Figure 3 The waste heat recovery device 7 further comprises a heat preservation cover 701, which is arranged outside the heat collector 704 and / or the waste heat storage 703, and the heat preservation cover 701 is fixedly connected with the rack 1 of the cement kiln 2. The heat preservation cover 701 can be made of heat insulation materials such as cotton rock plate, glass wool, EPS plate (expanded polystyrene plate) or XPS plate (extruded polystyrene plate), which is used to insulate the heat exchange between the inside and outside space and reduce energy loss.

[0049] The heat preservation cover 701 can be arranged outside the heat collector 704, so that the cement kiln 2 and the heat collector 704 inside are in the same insulated space, which is beneficial to improve the heat collection efficiency of the heat collector 704; the heat preservation cover 701 can also be arranged outside the waste heat storage 703, which is beneficial to ensure the heat preservation effect of the waste heat storage 703; the heat preservation cover 701 can also be arranged outside the heat collector 704 and the waste heat storage 703, so that the cement kiln 2, the heat collector 704 and the waste heat storage 703 are in the same insulated space, which can reduce unnecessary heat transmission loss between the heat collector 704 and the waste heat storage 703, is beneficial to improve the overall heat recovery efficiency of the waste heat recovery device 7, and can also improve the combustion economy of the cement kiln 2.

[0050] In some embodiments of the present application, as shown in Figure 2As shown, the pipeline support assembly 8 comprises a support base 803, a telescopic mechanism 804, a spring 805 and a support piece 806, the support base 803 is connected with one end of the telescopic mechanism 804, the support piece 806 is connected with the other end of the telescopic mechanism 804, the spring 805 is sleeved on the outside of the telescopic mechanism 804, one end of the spring 805 is fixedly connected with the support piece 806, the other end of the spring 805 is fixedly connected with the support base 803; the telescopic mechanism 804 is provided with a sleeve and a sliding rod, the sliding rod is in sliding connection with the inner wall of the sleeve, for realizing the functions of elongation or shortening of the telescopic mechanism 804.

[0051] The telescopic direction of the telescopic mechanism 804 is the same as the length direction of the spring 805, the telescopic mechanism 804 cooperates with the spring 805, for adjusting the support height of the pipeline support assembly 8 in the process of disassembling and assembling the first transmission pipeline 3 and / or the second transmission pipeline 6, placing the transmission pipeline on the support piece 806 of the pipeline support assembly 8, providing certain longitudinal support force for the transmission pipeline through the movable telescopic mechanism 804 and the spring 805, which can reduce the gravity borne by the operator during the disassembly and assembly process, is conducive to improving the convenience of disassembly and assembly operation and improving the operation efficiency, in addition, the pipeline support assembly 8 can still provide stable longitudinal support for the transmission pipeline after the transmission pipeline is installed, which is conducive to reducing the stress of the connection part of the transmission pipeline and avoiding the deformation or cracking of the structure of the transmission pipeline due to gravity. The support base 803 is used for providing bottom support for the telescopic mechanism 804, the support base 803 can be provided as a flat plate structure, the bottom surface of which is flat and can be in contact with the ground, which is conducive to improving the stability of the pipeline support assembly 8 as a whole.

[0052] The length of the telescopic mechanism 804 and the spring force of the spring 805 should be selected in combination with the actual use scene, for example, for a transmission pipeline assembly with large weight and low connection position, a telescopic mechanism 804 with shorter length and a spring 805 with larger spring force are set; for a transmission pipeline assembly with small weight and high connection position, a telescopic mechanism 804 with longer length and a spring 805 with smaller spring force are set. The length of the telescopic mechanism 804 is configured as the length of the telescopic mechanism 804 is greater than the pipe wall height of the position of the transmission pipeline support piece 806, and the length of the telescopic mechanism 804 is less than the pipe wall height of the position of the transmission pipeline support piece 806.

[0053] Furthermore, the support member 806 is used to contact and place the first transmission pipe 3 and / or the second transmission pipe 6. The support member 806 is a sheet-like structure with an arc surface, and the middle part of the arc surface is concave downwards for contacting and fitting with the wall surface of the first transmission pipe 3 and / or the second transmission pipe 6. The support member 806 can be configured as a sheet-like structure with an arc surface to increase the contact area between the support member 806 and the pipe wall. For common planar structures, the support member 806 has a line contact with the pipe wall. In this state, only the lowest point of the pipe wall contacts the support member 806. During use, the transmission pipe placed on the support member 806 is prone to rolling left and right and falling off. However, for the sheet-like structure with an arc surface, the support member 806 has a double-line segment contact or surface contact with the pipe wall. The transmission pipe is stably placed on the support member 806, avoiding the problem of rolling off.

[0054] In some embodiments of this utility model, the support base 803 is fixedly connected to the side wall or bottom surface of the absorption tower 9 to provide stable support for the support base 803, which is beneficial to improving the overall stability of the pipeline support assembly 8.

[0055] In some embodiments of this utility model, such as Figure 2 As shown, the pipeline connection structure includes a first flange 801 and a second flange 802. The first flange 801 is provided at the flue gas inlet and outlet of the second transmission pipeline 6, and the second flange 802 is provided at the exhaust port of the fan 4 and the inlet of the absorption tower 9; and / or, the first flange 801 is provided at the flue gas inlet and outlet of the first transmission pipeline 3, and the second flange 802 is provided at the exhaust port of the cement kiln 2 and the inlet of the fan 4. The first flange 801 and the second flange 802 are fixedly connected by a connector, one of which is a fixed flange and the other is a rotating flange. Threaded connectors such as bolts and nuts can be used.

[0056] For example, when installing the second transmission pipe 6, rotating flanges can be installed at the flue gas inlet and outlet ends of the second transmission pipe 6, while fixed flanges can be installed at the exhaust port of the fan 4 and the inlet of the absorption tower 9. The flue gas inlet end of the second transmission pipe 6 is connected to the exhaust port of the fan 4, and the flue gas outlet end of the second transmission pipe 6 is connected to the inlet of the absorption tower 9. The rotating flange is rotated to align the mounting holes on the rotating flange with the mounting holes on the fixed flange. Connectors are installed in the mounting holes to connect the rotating flange with the corresponding fixed flange, thus completing the installation of the second transmission pipe 6.

[0057] The fixed flanges and rotating flanges used in the above-mentioned pipe connection structure are both flange structures, which are simple in structure and easy to operate, simplifying the disassembly and assembly steps and improving work efficiency.

[0058] As one possible approach, the first flange 801 and the second flange 802 can be configured as an integral structure with the second transmission pipeline 6, which helps to simplify the structure and improve the sealing performance of the pipeline connection structure.

[0059] In some embodiments of this utility model, such as Figure 4 and Figure 5 As shown, the pipe connection structure further includes an annular protrusion 808 and an annular groove 807. The annular protrusion 808 is disposed on the first flange 801, and the annular groove 807 is disposed on the second flange 802; alternatively, the annular protrusion 808 is disposed on the second flange 802, and the annular groove 807 is disposed on the first flange 801. The annular protrusion 808 and the annular groove 807 are located at the mating end faces of the first flange 801 and the second flange 802, so that the connection position of the first flange 801 and the second flange 802 in the connected state forms a mutually engaging stop structure, enhancing the stability of the connection structure. The annular protrusion 808 serves as a convex stop in the stop structure, and the annular groove 807 serves as a concave stop in the stop structure. Setting the connection position of the first flange 801 and the second flange 802 as a stop structure can increase the contact area at the interface of the two connection structures and improve the sealing performance. The annular protrusion 808 and annular groove 807 are designed to mechanically position the connection interface during the installation of the transmission pipeline, facilitating installation; and can withstand part of the radial force of the transmission pipeline during disassembly, facilitating disassembly.

[0060] As another possible implementation, the annular protrusion 808 can be configured as a removable annular sealing gasket to improve the sealing effect of the connection.

[0061] In some embodiments of this utility model, the second transmission pipe 6 is provided with a horizontal conveying section. The horizontal conveying section is arranged horizontally and is used by the pipe support assembly 8 to support the bottom of the second transmission pipe 6. The horizontal conveying section is perpendicular to the telescopic mechanism 804 of the vertically arranged pipe support assembly 8. The resultant force on the left and right sides of the pipe support assembly 8 is zero, and it is only subjected to vertical pressure. This allows the telescopic mechanism 804 and the spring 805 to function better, enhancing the stability of the pipe support assembly 8 in supporting the second transmission pipe 6. Furthermore, the perpendicularity between the second transmission pipe 6 and the telescopic mechanism 804 also facilitates stable contact between the support member 806 and the pipe wall, preventing force displacement at the contact point between the support member 806 and the second transmission pipe 6, which could lead to changes in the overall structure.

[0062] In some embodiments of this utility model, such as Figure 1As shown, the fan 4 is connected to the second transmission pipe 6 through the first connecting pipe 5. One end of the first connecting pipe 5 is connected to the exhaust port of the fan 4, and the other end of the first connecting pipe 5 is connected to the flue gas input end of the second transmission pipe 6.

[0063] The second transmission pipe 6 is connected to the absorption tower 9 via a second connecting pipe 10. One end of the second connecting pipe 10 is connected to the flue gas inlet of the absorption tower 9, and the other end is connected to the flue gas outlet of the second transmission pipe 6. By providing a first connecting pipe 5 and a second connecting pipe 10 for connection between the fan 4 and the absorption tower 9, direct contact with the fan 4 and the absorption tower 9 during disassembly and assembly can be avoided, reducing the impact on the structure of the fan 4 and the absorption tower 9 and improving operational safety. Alternatively, the first connecting pipe 5 and the second connecting pipe 10 can be fixedly connected to the fan 4 and the absorption tower 9 respectively, making them connecting components between the fan 4 and the absorption tower 9. This simplifies the number of components in the transmission pipe assembly and facilitates daily maintenance.

[0064] According to the technical solution described in the embodiment of this utility model, a cement production system with a carbon dioxide enrichment and capture device can achieve at least the following beneficial effects:

[0065] (1) The docking structure provided in the transmission pipe assembly in this embodiment of the present invention enables the detachable connection of the first transmission pipe 3 and / or the second transmission pipe 6.

[0066] (2) The pipeline support component provided in the transmission pipeline assembly in this embodiment of the present invention can support the transmission pipeline during the disassembly and assembly process, which facilitates the disassembly, assembly and replacement of the transmission pipeline.

[0067] (3) The waste heat recovery device 7 installed in the cement production system in this embodiment of the present invention can recover and utilize the waste heat of the cement kiln 2.

[0068] (4) The annular protrusion 808 and annular groove 807 provided in the docking structure in this embodiment of the present invention can enhance the stability of the connection position structure and increase the contact area of ​​the interface position of the two connection structures to improve the sealing effect.

[0069] It should be clarified that this utility model is not limited to the specific configurations and processes described above and shown in the figures. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of this utility model is not limited to the specific steps described and shown. Those skilled in the art can make various changes, modifications, and additions, or change the order of steps, after understanding the spirit of this utility model.

[0070] In this invention, features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, and / or combined with or in place of features of other embodiments.

[0071] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. For those skilled in the art, various modifications and variations can be made to the embodiments of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cement production system with a carbon dioxide enrichment and capture device, comprising a cement kiln (2) and a transmission pipeline assembly, wherein the carbon dioxide enrichment and capture device includes an absorption tower (9), and the transmission pipeline assembly connects the cement kiln (2) and the absorption tower (9), characterized in that, The cement production system also includes a pipeline support assembly (8); The transmission pipeline assembly includes a fan (4), a first transmission pipeline (3), and a second transmission pipeline (6); wherein, the exhaust port of the cement kiln (2) is fixedly or detachably connected to the flue gas input end of the first transmission pipeline (3), the flue gas output end of the first transmission pipeline (3) is fixedly or detachably connected to the exhaust port of the fan (4), the exhaust port of the fan (4) is fixedly or detachably connected to the flue gas input end of the second transmission pipeline (6), and the flue gas output end of the second transmission pipeline (6) is fixedly or detachably connected to the exhaust port of the absorption tower (9); The transmission pipeline assembly further includes a pipeline docking structure; wherein the pipeline docking structure is disposed at both ends of the first transmission pipeline (3), so that the first transmission pipeline (3) can be detachably connected to the cement kiln (2) and the blower (4) to which it docks; and / or, the pipeline docking structure is disposed at both ends of the second transmission pipeline (6), so that the second transmission pipeline (6) can be detachably connected to the absorption tower (9) and the blower (4) to which it docks; The pipe support assembly (8) is used to be installed at the bottom of the first transmission pipe (3) and / or the second transmission pipe (6) for supporting them during the assembly and disassembly of the first transmission pipe (3) and / or the second transmission pipe (6).

2. A cement production system with a carbon dioxide enrichment and capture device according to claim 1, characterized in that, The cement production system also includes a waste heat recovery device (7), which includes a collector (704), a waste heat storage device (703), and a heat pipe (702). The collector (704) is connected to one end of the heat pipe (702), and the waste heat storage device (703) is connected to the other end of the heat pipe (702). The solar collector (704) is disposed on the outer wall of the cement kiln (2) or the transmission pipeline assembly; The waste heat storage device (703) and the heat pipe (702) are provided with a heat-conducting fluid medium. The heat pipe (702) is used to transfer the waste heat absorbed by the collector (704) from the wall of the cement kiln (2) or the transmission pipeline assembly to the waste heat storage device (703). The waste heat storage device (703) is used to store waste heat.

3. A cement production system with a carbon dioxide enrichment and capture device according to claim 2, characterized in that, The waste heat recovery device (7) also includes a heat insulation cover (701), which is disposed on the outside of the heat collector (704) and / or the waste heat storage device (703).

4. A cement production system with a carbon dioxide enrichment and capture device according to claim 1, characterized in that, The pipe support assembly (8) includes a support base (803), a telescopic mechanism (804), a spring (805), and a support member (806). The support base (803) is connected to one end of the telescopic mechanism (804), and the support member (806) is connected to the other end of the telescopic mechanism (804). The spring (805) is sleeved on the outside of the telescopic mechanism (804), one end of the spring (805) is fixedly connected to the support member (806), and the other end of the spring (805) is fixedly connected to the support base (803). The telescopic mechanism (804) is provided with a sleeve and a sliding rod, and the sliding rod is slidably connected to the inner wall of the sleeve; The telescopic mechanism (804) extends in the same direction as the length of the spring (805). The telescopic mechanism (804) and the spring (805) cooperate with each other to adjust the support height of the pipe support assembly (8) during the disassembly and assembly of the first transmission pipe (3) and / or the second transmission pipe (6). The support base (803) provides bottom support for the telescopic mechanism (804).

5. A cement production system with a carbon dioxide enrichment and capture device according to claim 4, characterized in that, The support member (806) is a sheet-like structure with an arc surface, the middle of which is recessed downwards for contacting and fitting with the wall of the first transmission pipe (3) and / or the second transmission pipe (6).

6. A cement production system with a carbon dioxide enrichment and capture device according to claim 4, characterized in that, The support base (803) is fixedly connected to the side wall or bottom surface of the absorption tower (9).

7. A cement production system with a carbon dioxide enrichment and capture device according to claim 1, characterized in that, The pipe connection structure includes a first flange (801) and a second flange (802); The second transmission pipeline (6) is provided with the first flange (801) at the flue gas inlet and the flue gas outlet, and the second flange (802) is provided at the exhaust port of the fan (4) and the inlet of the absorption tower (9); and / or, the first flange (801) is provided at the flue gas inlet and the flue gas outlet of the first transmission pipeline (3), and the second flange (802) is provided at the exhaust port of the cement kiln (2) and the inlet of the fan (4), and the first flange (801) and the second flange (802) are fixedly connected by a connector; One of the first flange (801) and the second flange (802) is a fixed flange, and the other is a rotating flange.

8. A cement production system with a carbon dioxide enrichment and capture device according to claim 7, characterized in that, The pipe connection structure also includes an annular protrusion (808) and an annular groove (807); The annular protrusion (808) is disposed on the first flange (801), and the annular groove (807) is disposed on the second flange (802); or, the annular protrusion (808) is disposed on the second flange (802), and the annular groove (807) is disposed on the first flange (801). The annular protrusion (808) and the annular groove (807) are located on the mating end faces of the first flange (801) and the second flange (802), so that the connection positions of the first flange (801) and the second flange (802) in the connected state form a mutually engaging stop structure.

9. A cement production system with a carbon dioxide enrichment and capture device according to claim 4, characterized in that, The second transmission pipe (6) is provided with a transverse conveying section, wherein the pipe of the transverse conveying section is arranged horizontally and is used by the pipe support assembly (8) to support the bottom of the second transmission pipe (6).

10. A cement production system with a carbon dioxide enrichment and capture device according to claim 1, characterized in that, The fan (4) is connected to the second transmission pipe (6) through the first connecting pipe (5). One end of the first connecting pipe (5) is connected to the exhaust port of the fan (4), and the other end of the first connecting pipe (5) is connected to the flue gas input end of the second transmission pipe (6). The second transmission pipe (6) is connected to the absorption tower (9) through the second connecting pipe (10). One end of the second connecting pipe (10) is connected to the flue gas inlet of the absorption tower (9), and the other end of the second connecting pipe (10) is connected to the flue gas outlet of the second transmission pipe (6).

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