Integrated equipment for oil removal, impurity removal and gasification of liquid ammonia

Abstract

The utility model discloses integrated equipment for oil removal, impurity removal and gasification of liquid ammonia, the upper end of a filter shell of the equipment is connected to the lower part of a gasification shell, the lower end of an overheating shell is connected to the upper part of the gasification shell, a liquid ammonia chamber and a separation chamber are arranged in the filter shell, the liquid ammonia chamber is located at the lower part in the filter shell, and the separation chamber is located at the upper part in the gasification shell. The liquid ammonia inlet is communicated with the liquid ammonia chamber; the microfiltration filter cartridge is of a cylindrical structure with an opening in the upper end, the microfiltration filter cartridge comprises a metal sintered felt folded wave filter element, the coalescence filter cartridge is of a cylindrical structure with an opening in the lower end, and the upper end of the microfiltration filter cartridge is connected with the lower end of the coalescence filter cartridge; the microfiltration filter cartridge is positioned in the liquid ammonia chamber, and the coalescence filter cartridge is positioned in the separation chamber; a heating pipe is arranged in the gasification shell, a superheater is arranged in the superheating shell, and a gas ammonia outlet is formed in the top of the superheating shell. The problems that in the prior art, oil removal, impurity removal and gasification need to be conducted on liquid ammonia through multiple devices, the structure is complex, and the occupied area is large are solved.

Description

Technical Field

[0001] The present application belongs to the technical field of liquid ammonia gasification, and specifically relates to an integrated device for deoiling, removing impurities and gasifying liquid ammonia. Background Art

[0002] During the transportation or delivery of liquid ammonia, some mechanical impurities such as rust will be produced or carried, and some impurities come from equipment corrosion. If the impurity content of liquid ammonia is too high, it will affect the chemical reaction of the next stage, and then produce by-products or cause equipment blockage during high-precision separation in the later stage.

[0003] The existing liquid ammonia oil removal, impurity removal and gasification system requires the use of multiple devices, each of which has independent functions such as oil removal, impurity removal and gasification. Many pipelines, valves and instruments need to be installed between the multiple devices of such a system. Therefore, the system has the problems of complex structure, large footprint and cumbersome oil removal, impurity removal and gasification process. At the same time, the system is not easy to maintain, which brings many inconveniences to the staff. Utility Model Content

[0004] The embodiment of the present application solves the problem that multiple devices are needed to remove oil, remove impurities and gasify liquid ammonia in the prior art, which has complex structure and large floor space, by providing an integrated device for removing oil, removing impurities and gasifying liquid ammonia.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides an integrated device for deoiling, impurity removal and gasification of liquid ammonia, including a filter housing, a gasification housing, a superheating housing, a microfiltration cartridge, a coalescing cartridge, a heating pipe and a superheater;

[0006] The upper end of the filter housing is connected to the lower part of the gasification housing, the lower end of the overheat housing is connected to the upper part of the gasification housing, and the interiors of the filter housing, the gasification housing and the overheat housing are connected;

[0007] A liquid ammonia inlet is provided at the lower part of the filter housing, and a sewage outlet is provided at the bottom of the filter housing;

[0008] A liquid ammonia chamber and a separation chamber are provided in the filter housing, and the liquid ammonia chamber and the separation chamber are separated by a partition; the liquid ammonia chamber is located at the lower part of the filter housing, and the liquid ammonia inlet is connected to the liquid ammonia chamber;

[0009] The microfiltration cartridge is a cylindrical structure with an opening at the upper end, and includes a metal sintered felt pleated filter element. The coalescing filter cartridge is a cylindrical structure with an opening at the lower end, and includes a coalescing filter element. The upper end of the microfiltration cartridge is connected to the lower end of the coalescing filter cartridge. The microfiltration cartridge is located in the liquid ammonia chamber, and the coalescing filter cartridge is located in the separation chamber.

[0010] A heating pipe is arranged in the gasification shell, a superheater is arranged in the superheat shell, and a gas ammonia outlet is arranged on the top of the superheat shell.

[0011] In a possible implementation, a filter channel is provided in the liquid ammonia chamber, the inlet of the filter channel is the liquid ammonia inlet, and a strong magnetic unit is provided on the filter channel.

[0012] In one possible implementation, the separation chamber includes an upper chamber, a connecting chamber and a lower chamber that are connected to each other. The upper chamber is located at the upper part of the filter shell, the lower chamber is located at the bottom of the filter shell, and the connecting chamber and the liquid ammonia chamber are both located in the lower middle part of the filter shell.

[0013] In a possible implementation, a level gauge is provided on the side wall of the filter housing at the separation chamber, and two mounting ends of the level gauge are respectively located at the middle of the upper chamber and the bottom of the connecting chamber, and an oil drain port is provided in the middle and upper part of the connecting chamber.

[0014] In a possible implementation, the separation chamber includes an upper chamber and a lower chamber that are connected, the upper chamber is located at the upper part of the filter housing, and the lower chamber and the upper part of the liquid ammonia chamber are located at the same height.

[0015] In a possible implementation, a level gauge is provided on the side wall of the filter housing, two mounting ends of the level gauge are respectively located at the lower part of the liquid ammonia chamber and the middle part of the upper chamber, and an oil drain port is provided at the lower part of the lower chamber.

[0016] In a possible implementation, the heating pipe is disposed in the lower part of the gasification shell, the heating pipe is disposed horizontally, and a circulating water inlet and a circulating water outlet of the heating pipe are disposed on one side of the gasification shell.

[0017] In a possible implementation, the upper end of the filter housing is connected to the lower center of the gasification housing, and sewage outlets are provided on both sides of the lower part of the gasification housing.

[0018] In a possible implementation, a thermometer is provided on the lower side wall of the gasification shell, and a liquid level gauge is provided on the gasification shell; a pressure gauge and a safety valve are respectively provided on the top of the gasification shell.

[0019] In a possible implementation, a steam inlet and a condensed water outlet of a superheater are provided on a side wall of the superheat shell.

[0020] One or more technical solutions provided in the embodiments of the present utility model have at least the following technical effects or advantages:

[0021] The utility model embodiment provides an integrated device for deoiling, removing impurities and gasifying liquid ammonia. Liquid ammonia enters the liquid ammonia chamber through the liquid ammonia inlet, and then enters the microfiltration filter cartridge. The metal sintered felt pleated filter element of the microfiltration filter cartridge separates various tiny impurities carried by the liquid ammonia to achieve impurity removal and filtration. The filtered impurities are discharged through the drain port at the bottom of the filter shell. The filtered liquid ammonia rises and is discharged from the coalescing filter cartridge. The capillary filter material on the coalescing filter element of the coalescing filter cartridge captures the tiny oil droplets carried by the liquid ammonia and further filters the impurities. The tiny oil droplets coalesce and grow into large oil droplets. There is a certain density difference between the large oil droplets and the liquid ammonia, which causes the oil droplets to move downward. Finally, the oil droplets gather and enter the lower part of the separation chamber, and the liquid ammonia rises and enters the gasification shell. The heating pipe of the gasification shell makes a certain amount of liquid ammonia gasify in the gasification shell. The gasified gas ammonia often contains a small amount of liquid droplets. In order to meet the use requirements of the next process section, the superheater in the superheat shell heats the gas ammonia, so that the small amount of liquid droplets in the gas ammonia are secondary gasified at high temperature, and then the completely gasified gas ammonia is output from the gas ammonia outlet at the top of the superheat shell. The equipment has a simple structure, small size, low cost, and is easy to maintain. The equipment can meet the filtering requirements of liquid ammonia removal and oil removal, and can fully gasify the liquid ammonia through primary and secondary gasification. The entire deoiling, impurity removal, and gasification process is simple and can meet the use requirements of liquid ammonia gasification. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 This is a schematic diagram of the structure of an integrated device for deoiling, removing impurities and gasifying liquid ammonia provided in Example 1 of the utility model.

[0024] Figure 2 This is a schematic diagram of the structure of an integrated device for deoiling, removing impurities and gasifying liquid ammonia provided in Example 2 of the utility model.

[0025] Figure numerals: 1-filter housing; 2-gasification housing; 3-superheat housing; 4-liquid ammonia chamber; 5-separation chamber; 51-upper chamber; 52-connecting chamber; 53-lower chamber; 6-microfiltration cartridge; 7-coalescing cartridge; 8-heating tube; 9-superheater; 10-filtration channel. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the embodiments of the present utility model, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the present utility model. The terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, the terms "installed", "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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model can be understood according to the specific circumstances.

[0028] like Figure 1 and Figure 2 As shown, the integrated equipment for deoiling, impurity removal and gasification of liquid ammonia provided by the embodiment of the utility model includes a filter housing 1, a gasification housing 2, a superheating housing 3, a microfiltration cartridge 6, a coalescing cartridge 7, a heating tube 8 and a superheater 9.

[0029] The upper end of the filter housing 1 is connected to the lower part of the gasification housing 2, the lower end of the overheat housing 3 is connected to the upper part of the gasification housing 2, and the interiors of the filter housing 1, the gasification housing 2 and the overheat housing 3 are connected.

[0030] A liquid ammonia inlet is arranged at the lower part of the filter housing 1 , and a sewage outlet is arranged at the bottom of the filter housing 1 .

[0031] A liquid ammonia chamber 4 and a separation chamber 5 are provided in the filter housing 1, and the liquid ammonia chamber 4 and the separation chamber 5 are separated by a partition. The liquid ammonia chamber 4 is located at the lower part of the filter housing 1, and the liquid ammonia inlet is connected to the liquid ammonia chamber 4.

[0032] The microfiltration cartridge 6 is a cylindrical structure with an opening at the upper end, and includes a metal sintered felt pleated filter element. The coalescing filter cartridge 7 is a cylindrical structure with an opening at the lower end, and includes a coalescing filter element. The upper end of the microfiltration cartridge 6 is connected to the lower end of the coalescing filter cartridge 7. The microfiltration cartridge 6 is located in the liquid ammonia chamber 4, and the coalescing filter cartridge 7 is located in the separation chamber 5.

[0033] A heating pipe 8 is arranged in the gasification shell 2 , a superheater 9 is arranged in the superheat shell 3 , and a gas ammonia outlet is arranged at the top of the superheat shell 3 .

[0034] It should be noted that liquid ammonia enters the liquid ammonia chamber 4 through the liquid ammonia inlet, and then the liquid ammonia enters the microfiltration cartridge 6. The metal sintered felt pleated filter element of the microfiltration cartridge 6 separates various tiny impurities carried by the liquid ammonia to achieve impurity removal filtration. The filtered impurities are discharged through the drain port at the bottom of the filter shell 1. The filtered liquid ammonia rises and is discharged from the coalescing filter cartridge 7. The capillary filter material on the coalescing filter element of the coalescing filter cartridge 7 captures the tiny oil droplets carried by the liquid ammonia and further filters the impurities. The tiny oil droplets coalesce and grow into large oil droplets. There is a certain density difference between the large oil droplets and the liquid ammonia, so that the oil droplets move downward after passing through the coalescing filter cartridge 7. Finally, the oil droplets gather and settle into the lower part of the separation chamber 5 due to gravity, and the liquid ammonia rises into the gasification shell 2. The heating pipe 8 of the gasification shell 2 gasifies a certain amount of liquid ammonia in the gasification shell 2. The gasified gas ammonia often contains a small amount of liquid droplets. In order to meet the use requirements of the next process section, the superheater 9 in the superheat shell 3 heats the gas ammonia to make the small amount of liquid droplets in the gas ammonia secondary gasification at high temperature, and then the completely gasified gas ammonia is output from the gas ammonia outlet at the top of the superheat shell 3. The equipment has a simple structure, small size, low cost, and is easy to maintain. The equipment can meet the filtering requirements of liquid ammonia removal and oil removal, and can fully gasify the liquid ammonia through primary gasification and secondary gasification. The entire deoiling, impurity removal, and gasification process is simple and can meet the use requirements of liquid ammonia gasification.

[0035] In this embodiment, a filter channel 10 is provided in the liquid ammonia chamber 4 , the inlet of the filter channel 10 is the liquid ammonia inlet, and a strong magnetic unit is provided on the filter channel 10 .

[0036] It should be noted that the strong magnetic unit is used to capture impurities such as rust in liquid ammonia that can be strongly magnetically adsorbed.

[0037] In the first embodiment, the separation chamber 5 includes an upper chamber 51, a connecting chamber 52 and a lower chamber 53 which are connected to each other. The upper chamber 51 is located at the upper part of the filter housing 1, the lower chamber 53 is located at the bottom of the filter housing 1, and the connecting chamber 52 and the liquid ammonia chamber 4 are both located in the lower middle part of the filter housing 1.

[0038] It should be noted that such a layout of the separation chamber 5 can save materials on the one hand, and is conducive to the re-deposition of the coalesced oil droplets on the other hand, thereby improving the oil removal efficiency.

[0039] In the first embodiment, a level gauge is provided on the side wall of the filter housing 1 at the separation chamber 5, and two mounting ends of the level gauge are respectively located at the middle of the upper chamber 51 and the bottom of the connecting chamber 52, and an oil drain port is provided in the middle and upper part of the connecting chamber 52.

[0040] It should be noted that the interface meter is used to monitor the position of the interface between oil and ammonia water, so as to facilitate the discharge of oil through the oil discharge port to ensure the oil removal quality of the equipment. The connecting chamber 52 provides sufficient sedimentation space for the separation of oil and ammonia water, and the setting of the oil discharge port is conducive to the discharge of oil without discharging liquid ammonia.

[0041] In the second embodiment, the separation chamber 5 includes an upper chamber 51 and a lower chamber 53 which are connected to each other. The upper chamber 51 is located at the upper part of the filter housing 1, and the lower chamber 53 and the upper part of the liquid ammonia chamber 4 are located at the same height.

[0042] In the second embodiment, a level gauge is provided on the side wall of the filter housing 1, and two mounting ends of the level gauge are respectively located at the lower part of the liquid ammonia chamber 4 and the middle part of the upper chamber 51, and an oil drain port is provided at the lower part of the lower chamber 53.

[0043] It should be noted that the main reason for the layout of the separation chamber 5 is to allow the liquid ammonia entering the device to fully pass through the filter element, and to remove impurities and oil under the action of the filter element to ensure the effect.

[0044] In this embodiment, the heating pipe 8 is arranged at the lower part of the gasification shell 2 , the heating pipe 8 is arranged horizontally, and a circulating water inlet and a circulating water outlet of the heating pipe 8 are arranged on one side of the gasification shell 2 .

[0045] It should be noted that the heating pipe 8 heats the ammonia water through the circulating water. The horizontally arranged heating pipe 8 is conducive to uniform heating of the liquid ammonia and improves the gasification efficiency. The upper cavity in the gasification shell 2 is mainly conducive to the separation of liquid ammonia and gaseous ammonia.

[0046] In this embodiment, the upper end of the filter housing 1 is connected to the lower center of the gasification housing 2, and sewage outlets are provided on both sides of the lower part of the gasification housing 2.

[0047] It should be noted that the sewage outlet discharges impurities deposited at the bottom of the gasification shell 2. The upper end of the filter shell 1 is connected to the lower center of the gasification shell 2 to facilitate the filtered liquid ammonia to be evenly heated after entering the heater.

[0048] In this embodiment, a thermometer is provided on the lower side wall of the gasification shell 2, and a liquid level gauge is provided on the gasification shell 2. A pressure gauge and a safety valve are provided on the top of the gasification shell 2, respectively.

[0049] It should be noted that the thermometer includes an on-site thermometer and a remote thermometer, and the level meter includes an on-site level meter and a remote level meter. On-site refers to on-site monitoring, and remote refers to remote equipment monitoring. The safety valve can release pressure when the pressure in the gasification shell 2 is too high to prevent overpressure of the equipment.

[0050] In this embodiment, the side wall of the superheated shell 3 is provided with a steam inlet and a condensed water outlet of the superheater 9.

[0051] It should be noted that the superheater 9 heats the gaseous ammonia by means of high-temperature steam.

[0052] In this embodiment, it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiment, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiment should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and therefore it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention.

Claims

1. An integrated device for deoiling, impurity removal and gasification of liquid ammonia, characterized by: It comprises a filter housing (1), a gasification housing (2), a superheat housing (3), a microfiltration cartridge (6), a coalescence cartridge (7), a heating tube (8) and a superheater (9); The upper end of the filter housing (1) is connected to the lower part of the gasification housing (2), the lower end of the superheating housing (3) is connected to the upper part of the gasification housing (2), and the interiors of the filter housing (1), the gasification housing (2) and the superheating housing (3) are connected; A liquid ammonia inlet is provided at the lower part of the filter housing (1), and a sewage outlet is provided at the bottom of the filter housing (1); A liquid ammonia chamber (4) and a separation chamber (5) are provided in the filter housing (1), and the liquid ammonia chamber (4) and the separation chamber (5) are separated by a partition; the liquid ammonia chamber (4) is located at the lower part of the filter housing (1), and a liquid ammonia inlet is connected to the liquid ammonia chamber (4); The microfiltration cartridge (6) is a cylindrical structure with an opening at the upper end, and comprises a metal sintered felt pleated filter element; the coalescing filter cartridge (7) is a cylindrical structure with an opening at the lower end, and comprises a coalescing filter element; the upper end of the microfiltration cartridge (6) is connected to the lower end of the coalescing filter cartridge (7); the microfiltration cartridge (6) is located in the liquid ammonia chamber (4), and the coalescing filter cartridge (7) is located in the separation chamber (5); A heating pipe (8) is arranged in the gasification shell (2), a superheater (9) is arranged in the superheat shell (3), and a gas ammonia outlet is arranged at the top of the superheat shell (3).

2. The integrated equipment for deoiling, impurity removal and gasification of liquid ammonia according to claim 1, characterized in that: A filter channel (10) is arranged in the liquid ammonia chamber (4); the inlet of the filter channel (10) is a liquid ammonia inlet; and a strong magnetic unit is arranged on the filter channel (10).

3. The integrated equipment for deoiling, impurity removal and gasification of liquid ammonia according to claim 1, characterized in that: The separation chamber (5) comprises an upper chamber (51), a connecting chamber (52) and a lower chamber (53) which are connected to each other. The upper chamber (51) is located at the upper part of the filter housing (1), the lower chamber (53) is located at the bottom of the filter housing (1), and the connecting chamber (52) and the liquid ammonia chamber (4) are both located at the middle and lower part of the filter housing (1).

4. The integrated equipment for deoiling, impurity removal and gasification of liquid ammonia according to claim 3, characterized in that: A level gauge is provided on the side wall of the filter housing (1) at the separation chamber (5), and two mounting ends of the level gauge are respectively located at the middle of the upper chamber (51) and the bottom of the connecting chamber (52), and an oil discharge port is provided at the middle upper part of the connecting chamber (52).

5. The integrated equipment for deoiling, impurity removal and gasification of liquid ammonia according to claim 1, characterized in that: The separation chamber (5) comprises an upper chamber (51) and a lower chamber (53) which are connected to each other. The upper chamber (51) is located at the upper part of the filter housing (1), and the lower chamber (53) and the upper part of the liquid ammonia chamber (4) are located at the same height.

6. The integrated equipment for deoiling, impurity removal and gasification of liquid ammonia according to claim 5, characterized in that: The side wall of the filter housing (1) is provided with an interface gauge, the two mounting ends of which are respectively located at the lower part of the liquid ammonia chamber (4) and the middle part of the upper chamber (51), and the lower part of the lower chamber (53) is provided with an oil discharge port.

7. The integrated equipment for deoiling, impurity removal and gasification of liquid ammonia according to claim 1, characterized in that: The heating pipe (8) is arranged at the lower part of the gasification shell (2), the heating pipe (8) is arranged horizontally, and a circulating water inlet and a circulating water outlet of the heating pipe (8) are arranged on one side of the gasification shell (2).

8. The integrated equipment for deoiling, impurity removal and gasification of liquid ammonia according to claim 1, characterized in that: The upper end of the filter housing (1) is connected to the lower center of the gasification housing (2), and sewage outlets are provided on both sides of the lower part of the gasification housing (2).

9. The integrated equipment for deoiling, impurity removal and gasification of liquid ammonia according to claim 1, characterized in that: A thermometer is arranged on the lower side wall of the gasification shell (2), and a liquid level gauge is arranged on the gasification shell (2); a pressure gauge and a safety valve are arranged on the top of the gasification shell (2).

10. The integrated equipment for deoiling, impurity removal and gasification of liquid ammonia according to claim 1, characterized in that: The side wall of the superheating shell (3) is provided with a steam inlet and a condensed water outlet of the superheater (9).

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