Instrument air delivery pipeline structure of pressure swing adsorption air storage tank

Abstract

The utility model relates to the technical field of chemical engineering, in particular to a pressure swing adsorption air storage tank instrument air delivery pipeline structure which comprises a first air delivery pipe with one end connected to a storage tank and the other end connected to a pneumatic execution structure, and the first air delivery pipe is provided with a first control valve and a first filter; one end of the second air supply pipe is communicated with one end of the first air supply pipe, the other end of the second air supply pipe is communicated with the other end of the first air supply pipe, and a second control valve and a second filter are mounted on the second air supply pipe. When the first air supply pipe goes wrong, the first air supply pipe can be controlled through the first control valve, and then the second control valve is opened to continuously supply air, so that the second air supply pipe is equivalent to a standby air supply pipe and can be started in order not to influence the operation of the whole equipment when the first air supply pipe goes wrong; therefore, the instrument delivery air pipeline structure is high in error-tolerant rate, the risk of comprehensive shutdown of a synthetic ammonia system can be prevented, and large economic losses are prevented.

Description

Technical Field

[0001] This application relates to the field of chemical engineering technology, and particularly relates to a pipeline structure for delivering instrument air from a pressure swing adsorption air storage tank to the outside Background Art

[0002] Pressure Swing Adsorption (PSA) technology is an advanced technology for separating gas mixtures by changing pressure, and is widely used in fields such as gas separation, purification, and drying. In industrial production, the quality of instrument air directly affects the stability and accuracy of the control system, so a high-quality supply of instrument air is crucial

[0003] In the existing pipeline for delivering instrument air from a pressure swing adsorption instrument air storage tank to the outside, there is only one supply source, which results in a poor fault tolerance rate. Once this path fails, it will cause a complete shutdown of the synthetic ammonia system and result in significant economic losses Summary of the Invention

[0004] This application aims to at least partly solve one of the above technical problems in the prior art. To this end, an embodiment of this application provides a pipeline structure for delivering instrument air from a pressure swing adsorption air storage tank to the outside, which can prevent the risk of a complete shutdown of the synthetic ammonia system and prevent significant economic losses

[0005] A pipeline structure for delivering instrument air from a pressure swing adsorption air storage tank to the outside includes

[0006] A first air delivery pipe, one end of the first air delivery pipe is used to connect to the storage tank, and the other end is used to connect to a pneumatic actuator structure. The first air delivery pipe is of a U-shaped structure, and a first control valve and a first filter are installed on the first air delivery pipe

[0007] A second air delivery pipe, the second air delivery pipe is horizontally arranged at the open end of the U-shaped first air delivery pipe. One end of the second air delivery pipe communicates with one end of the first air delivery pipe, and the other end of the second air delivery pipe communicates with the other end of the first air delivery pipe. A second control valve and a second filter are installed on the second air delivery pipe

[0008] In an optional or preferred embodiment, a first heater is installed on the first air delivery pipe

[0009] In an optional or preferred embodiment, a second heater is installed on the second air delivery pipe

[0010] In an optional or preferred embodiment, the second air delivery pipe is detachably connected to the first air delivery pipe

[0011] In an optional or preferred embodiment, both ends of the second air delivery pipe are connected to the first air delivery pipe through flanges

[0012] In an optional or preferred embodiment, two second control valves are provided, and the two second control valves are respectively arranged on both sides of the first heater and the first filter.

[0013] Based on the above technical solution, the embodiments of the present application have at least the following beneficial effects: in the above technical solution, when the first air supply pipe has a problem, the first control valve can be used to control the first air supply pipe to close, and then the second control valve is opened to continue supplying air through the second air supply pipe. Therefore, the second air supply pipe is equivalent to a standby air supply pipe and will only be enabled when the first air supply pipe has a problem to prevent the operation of the entire device from being affected. Therefore, this external instrument air pipeline structure has a relatively high fault tolerance rate, can prevent the risk of a complete shutdown of the ammonia synthesis system, and prevent large economic losses. Description of the Drawings

[0014] The following further describes the present application with reference to the drawings and embodiments;

[0015] Figure 1 It is a schematic diagram of the external instrument air pipeline structure of the pressure swing adsorption air storage tank provided by the embodiment of the present application. Detailed Embodiments

[0016] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0017] The following further describes the embodiments of the present application in detail with reference to the drawings and embodiments. The following embodiments are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0018] In the description of the embodiments of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device 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 to the embodiments of the present application. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified or limited, the terms "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0020] In the embodiments of the present application, unless otherwise clearly specified or limited, the first feature being "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or merely indicates that the horizontal height of the first feature is less than that of the second feature.

[0021] Pressure Swing Adsorption (PSA) technology is an advanced technology for separating gas mixtures by changing pressure, and is widely used in fields such as gas separation, purification and drying. In industrial production, the quality of instrument air directly affects the stability and accuracy of the control system, so the supply of high-quality instrument air is crucial.

[0022] In the existing PSA instrument air storage tank, there is only one way to send out instrument air as the gas supply source, which results in a poor error tolerance. Once this path fails, it will cause a complete shutdown of the synthetic ammonia system and result in relatively large economic losses.

[0023] Refer to Figure 1 , the present application provides a pipeline structure for sending out instrument air from a PSA air storage tank, including a first air delivery pipe 200 and a second air delivery pipe 300.

[0024] One end of the first air delivery pipe 200 is used to connect to the storage tank 100, and the other end is used to connect to a pneumatic actuator structure. The first air delivery pipe 200 is a U-shaped structure, and a first control valve 210 and a first filter 220 are installed on the first air delivery pipe 200. The second air delivery pipe 300 is horizontally separated at the open end of the U-shaped first air delivery pipe 200. One end of the second air delivery pipe 300 communicates with one end of the first air delivery pipe 200, and the other end of the second air delivery pipe 300 communicates with the other end of the first air delivery pipe 200. A second control valve 310 and a second filter 320 are installed on the second air delivery pipe 300.

[0025] When the first air supply pipe 200 has problems, the first control valve 210 can be used to control the first air supply pipe 200 to close, and then the second control valve 310 is opened to continue supplying air through the second air supply pipe 300. Therefore, the second air supply pipe 300 is equivalent to a standby air supply pipe and will only be enabled when the first air supply pipe 200 has problems to prevent affecting the operation of the entire equipment. Therefore, this external instrument air pipeline structure has a relatively high fault tolerance rate, can prevent the risk of a complete shutdown of the ammonia synthesis system, and prevent significant economic losses.

[0026] The open end of the first air supply pipe 200 is the opening of the U-shaped structure formed by enclosing the first air supply pipe 200.

[0027] The first filter 220 is used to filter the instrument air passing through the first air supply pipe 200, and the second filter 320 is used to filter the instrument air passing through the second air supply pipe 300.

[0028] Some pneumatic actuating structures have requirements for the temperature of the instrument air. In some embodiments, a first heater 230 is installed on the first air supply pipe 200.

[0029] Specifically, a first water inlet pipe is installed at the bottom of the first heater 230, and a first water outlet pipe is installed at the top. When it is necessary to heat the gas on the first air supply pipe 200, hot water is introduced through the first water inlet pipe, and then after heat exchange in the first heater 230, it flows out through the first water outlet pipe to complete the heating of the instrument air. Similarly, when cooling is required, the hot water can be replaced with ice water.

[0030] In some embodiments, a second heater 330 is installed on the second air supply pipe 300. The structure of the second heater 330 is the same as that of the first heater 230, and the heating principle is also the same.

[0031] Of course, the first heater 230 and the second heater 330 can also be set as electric heaters.

[0032] In order to facilitate the installation of the second air supply pipe 300, in some embodiments, the second air supply pipe 300 is detachably connected to the first air supply pipe 200.

[0033] In some embodiments, both ends of the second air supply pipe 300 are connected to the first air supply pipe 200 through flanges.

[0034] Specifically, flange connection ends are welded at the positions on the first air supply pipe 200 for connecting the second air supply pipe 300, and flange connection ends are also welded at both ends of the second air supply pipe 300. During the installation process, after installing the sealing gaskets between the flange connection ends at both ends of the second air supply pipe 300 and the two flange connection ends on the first air supply pipe 200, they are connected through bolts.

[0035] In some embodiments, there are two second control valves 310, which are respectively arranged on both sides of the second heater 330 and the second filter 320. The two second control valves 310 can more precisely control the ventilation and air cut-off on the second air supply pipe 300.

[0036] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0037] The embodiments of the present application have been described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the above embodiments, and various changes can be made without departing from the gist of the present application within the scope of knowledge possessed by those of ordinary skill in the art.

Claims

1. A pipeline structure for delivering instrument air from a pressure swing adsorption air storage tank, characterized in that, Including: A first air supply pipe, one end of the first air supply pipe is used to connect to a storage tank, and the other end is used to connect to a pneumatic actuator structure. The first air supply pipe is of a U-shaped structure, and a first control valve and a first filter are installed on the first air supply pipe; A second air supply pipe, the second air supply pipe is horizontally arranged at the open end of the U-shaped first air supply pipe. One end of the second air supply pipe communicates with one end of the first air supply pipe, and the other end of the second air supply pipe communicates with the other end of the first air supply pipe. A second control valve and a second filter are installed on the second air supply pipe.

2. The structure of the instrument air pipeline for external delivery of the pressure swing adsorption air storage tank according to claim 1, wherein: A first heater is installed on the first air supply pipe.

3. The structure of the instrument air pipeline for external supply of the pressure swing adsorption air storage tank according to claim 1, wherein: A second heater is installed on the second air supply pipe.

4. The structure of the instrument air pipeline for external delivery of the pressure swing adsorption air storage tank according to claim 1, characterized in that: The second air supply pipe is detachably connected to the first air supply pipe.

5. The pressure swing adsorption air storage tank external delivery instrument air pipeline structure according to claim 4, characterized in that: Both ends of the second air supply pipe are connected to the first air supply pipe through flanges.

6. The pressure swing adsorption air storage tank external delivery instrument air pipeline structure according to claim 2, characterized in that: There are two second control valves, and the two second control valves are respectively arranged on both sides of the first heater and the first filter.

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