Naphtha reforming, dehydrating and consumption reducing device

Abstract

The utility model discloses a naphtha modification dehydrating and consumption reducing device, including base, the upper surface fixed coupling of base has the first salt jar, the upper surface fixed coupling of base has the second salt jar, the upper surface of first salt jar and the upper surface of second salt jar jointly fixed communication has the oil distribution pipe, the outer surface fixed mounting of oil distribution pipe has the first valve of relative symmetry, the upper surface of first salt jar and the upper surface of second salt jar all fixed communication has the hot nitrogen gas connecting pipe. The device replaces molecular sieve and coalescer by the salt layer adsorbing the moisture in heavy naphtha, effectively reduces naphtha dehydration cost, also has realized naphtha's dehydration index requirement, through the hot nitrogen gas repeatedly purges the salt layer, takes out the naphtha and the salt layer surface partial water vapor that stagnate in the salt layer interstice to the jar bottom, and utilizes the heating mode of pipeline steam to heat the salt layer, has realized the salt layer regeneration, reduced the salt layer manual replacement work, reduced the loss and cost of salt layer.

Description

Technical Field

[0001] This utility model relates to the field of naphtha dehydration technology, and in particular to a naphtha modification, dehydration and consumption reduction device. Background Technology

[0002] The presence of water in naphtha can adversely affect subsequent processing. For example, in aromatics reforming units, excessive water content can wash away chlorine from the reforming catalyst, weakening its acidity and reducing its activity. It can also accelerate the aggregation of platinum crystals on the reforming catalyst, reducing its metallic properties. Therefore, naphtha needs to be dehydrated. Common dehydration techniques include coalescence dehydration and molecular sieve desiccant dehydration.

[0003] Currently, the commonly used dehydration technologies in production include coalescer and molecular sieve dehydration technology. The former has a complex equipment structure and high cost, the filter element is prone to clogging and has high requirements for fluid characteristics and system stability, while the latter has high regeneration energy consumption and increased cost. Frequent regeneration will reduce the mechanical strength of the molecular sieve and shorten its life. To address these issues, we propose a naphtha reforming and dehydration energy-saving device. Utility Model Content

[0004] The purpose of this invention is to provide a naphtha modification, dehydration and energy-saving device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A naphtha reforming, dehydration, and energy-saving device includes a base, a first salt tank fixedly connected to the upper surface of the base, a second salt tank fixedly connected to the upper surface of the base, an oil distribution pipe fixedly connected to the upper surfaces of the first and second salt tanks, a symmetrical first valve fixedly installed on the outer surface of the oil distribution pipe, a hot nitrogen gas connection pipe fixedly connected to the upper surfaces of both the first and second salt tanks, a salt layer provided inside both the first and second salt tanks, a steam generator fixedly installed on the upper surface of the base, an air inlet assembly fixedly connected to the output end of the steam generator, a gas distribution assembly provided on the outer surfaces of both the first and second salt tanks, a naphtha recovery tank fixedly connected to the upper surface of the base, the outer surfaces of both the first and second salt tanks being connected to the back of the naphtha recovery tank, and a symmetrical oil conveying assembly provided on the upper surface of the naphtha recovery tank.

[0007] In a further embodiment, both oil conveying components include oil pumps, both oil pumps are located on the upper surface of the naphtha recovery tank, the output ends of both oil pumps are fixedly connected to oil suction pipes, the bottom ends of both oil suction pipes penetrate the naphtha recovery tank and extend into the interior of the naphtha recovery tank, the output ends of both oil pumps are fixedly connected to oil conveying pipes, and one end of each oil conveying pipe is connected to the outer surface of the first salt tank and the outer surface of the second salt tank, respectively.

[0008] In a further embodiment, the outer surface of the oil distribution pipe is fixedly connected to a heavy naphtha connecting pipe.

[0009] In a further embodiment, the air intake assembly includes an air intake pipe, and a symmetrical second valve is fixedly installed on the outer surface of the air intake pipe.

[0010] In a further embodiment, both of the gas distribution components include a distribution box. The sides of the two distribution boxes that are far apart from each other are connected to the outer surfaces of the first salt tank and the second salt tank, respectively. The sides of the two distribution boxes that are far apart from each other are fixedly connected to an upper heating pipe and a lower heating pipe. The two upper heating pipes and the two lower heating pipes are located inside the first salt tank and the second salt tank, respectively.

[0011] In a further embodiment, an oil drain pipe is fixedly connected to the front of the naphtha recovery tank, and a third valve is fixedly installed on the outer surface of the oil drain pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This device replaces molecular sieves and coalescers by adsorbing water from heavy naphtha using a salt layer, effectively reducing the cost of naphtha dehydration while meeting the dehydration requirements. The salt layer is repeatedly purged with hot nitrogen to remove naphtha trapped in the gaps and some water vapor from the surface to the bottom of the tank. The salt layer is then heated using pipeline steam, achieving salt layer regeneration, reducing manual replacement work, and lowering salt layer loss and costs. Attached Figure Description

[0014] Figure 1 This is a front view schematic diagram of a naphtha reforming, dehydration, and energy-saving device.

[0015] Figure 2 This is a top view schematic diagram of a naphtha reforming, dehydration, and energy-saving device.

[0016] Figure 3 This is a schematic diagram of the front section structure of a naphtha reforming, dehydration, and energy-saving device.

[0017] Figure 4 This is a side view of the naphtha reforming, dehydration, and energy-saving device.

[0018] In the diagram: 1. Base; 2. First salt tank; 3. Second salt tank; 4. Oil delivery assembly; 401. Oil pump; 402. Oil extraction pipe; 403. Oil delivery pipe; 5. Naphtha recovery tank; 6. Hot nitrogen connection pipe; 7. First valve; 8. Oil distribution pipe; 9. Heavy naphtha connection pipe; 10. Steam generator; 11. Air intake assembly; 111. Air intake pipe; 112. Second valve; 12. Gas distribution assembly; 121. Diversion box; 122. Upper heating pipe; 123. Lower heating pipe; 13. Salt layer; 14. Oil discharge pipe; 15. Third valve. Detailed Implementation

[0019] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figure 1-4In this utility model, a naphtha modification, dehydration, and energy-saving device includes a base 1. A first salt tank 2 is fixedly connected to the upper surface of the base 1, and a second salt tank 3 is fixedly connected to the upper surface of the base 1. An oil distribution pipe 8 is fixedly connected to the upper surfaces of the first salt tank 2 and the second salt tank 3. A symmetrical first valve 7 is fixedly installed on the outer surface of the oil distribution pipe 8. A hot nitrogen connection pipe 6 is fixedly connected to the upper surfaces of both the first salt tank 2 and the second salt tank 3. A salt layer 13 is provided inside both the first salt tank 2 and the second salt tank 3. A steam generator 10 is fixedly installed on the upper surface of the base 1. An air inlet assembly 11 is fixedly connected to the output end of the steam generator 10. The outer surface of the first salt tank 2... Both the outer surfaces of the first salt tank 2 and the second salt tank 3 are equipped with gas distribution components 12. The upper surface of the base 1 is fixedly connected to the naphtha recovery tank 5. The outer surfaces of the first salt tank 2 and the second salt tank 3 are connected to the back of the naphtha recovery tank 5. The upper surface of the naphtha recovery tank 5 is equipped with symmetrical oil conveying components 4. Through the cooperation of the first salt tank 2 and the second salt tank 3, they can be switched to perform dehydration of naphtha. By setting a hot nitrogen connection pipe 6, external hot nitrogen can be connected. By setting a first valve 7, the flow direction of heavy naphtha can be controlled. Through the cooperation of the steam generator 10, the air inlet component 11 and the gas distribution component 12, the salt layer 13 can be heated to accelerate the evaporation of water adsorbed by the salt layer 13.

[0023] Both oil conveying components 4 include oil pumps 401, both oil pumps 401 are located on the upper surface of naphtha recovery tank 5, and the output ends of both oil pumps 401 are fixedly connected to oil suction pipes 402. The bottom ends of both oil suction pipes 402 penetrate through naphtha recovery tank 5 and extend into the interior of naphtha recovery tank 5. The output ends of both oil pumps 401 are fixedly connected to oil conveying pipes 403. One end of each oil conveying pipe 403 is connected to the outer surface of the first salt tank 2 and the outer surface of the second salt tank 3, respectively. Through the cooperation of oil pumps 401, oil suction pipes 402 and oil conveying pipes 403, the cyclical transportation of naphtha can be realized.

[0024] The outer surface of the oil distribution pipe 8 is fixedly connected to the heavy naphtha connecting pipe 9. By setting the heavy naphtha connecting pipe 9, it can serve as an input channel for external heavy naphtha, allowing heavy naphtha to enter the interior of the salt tank.

[0025] The intake assembly 11 includes an intake pipe 111, and a symmetrical second valve 112 is fixedly installed on the outer surface of the intake pipe 111, which allows steam to enter the distribution box 121 through the intake pipe 111, and controls the flow direction of the steam by opening and closing the second valve 112.

[0026] Both gas distribution components 12 include a distribution box 121. The sides of the two distribution boxes 121 that are far apart from each other are connected to the outer surfaces of the first salt tank 2 and the second salt tank 3, respectively. The sides of the two distribution boxes 121 that are far apart from each other are fixedly connected to an upper heating pipe 122 and a lower heating pipe 123. The two upper heating pipes 122 and the two lower heating pipes 123 are located inside the first salt tank 2 and the second salt tank 3, respectively. The distribution box 121 allows steam to enter the upper heating pipe 122 and the lower heating pipe 123, so that the heating pipes heat the salt layer 13.

[0027] The front of the naphtha recovery tank 5 is fixedly connected to the oil drain pipe 14. A third valve 15 is fixedly installed on the outer surface of the oil drain pipe 14. Turning the third valve 15 can discharge the naphtha in the naphtha recovery tank 5 through the oil drain pipe 14.

[0028] The working principle of this utility model is as follows:

[0029] Heavy naphtha enters the oil distribution pipe 8 through the heavy naphtha connecting pipe 9. The first valve 7 controls the flow of heavy naphtha into the first salt tank 2 and the second salt tank 3, allowing for switching between them. After entering the first salt tank 2, the salt layer 13 adsorbs the water in the heavy naphtha, thus dehydrating it. The dehydrated naphtha flows to the bottom of the first salt tank 2 and into the naphtha recovery tank 5. If the dehydration effect of the salt layer 13 in the first salt tank 2 does not meet the requirements, the first valve 7 is switched to the second salt tank 3 for production. After switching, hot nitrogen is introduced through the hot nitrogen connecting pipe 6. The first salt tank 2, as it passes through the salt layer 13 from top to bottom, carries away the naphtha trapped in the gaps of the salt layer 13 and some water vapor on the surface of the salt layer 13 to the bottom of the tank and discharges it to the naphtha recovery tank 5. Then, the oil pump 401 extracts the naphtha from the naphtha recovery tank 5 through the oil extraction pipe 402 and delivers it to the salt tank through the oil delivery pipe 403 to realize the circulation and dehydration of the naphtha. At the same time, the steam generated by the steam generator 10 flows into the gas distribution component 12 through the air intake component 11 to heat the salt layer 13, accelerate the evaporation of the water adsorbed in the salt layer 13, and realize the regeneration of the salt layer 13.

[0030] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A naphtha modification, dehydration, and energy-saving device, characterized in that: Includes a base (1), on the upper surface of which a first salt tank (2) is fixedly connected, and on the upper surface of which a second salt tank (3) is fixedly connected, and on the upper surfaces of the first salt tank (2) and the second salt tank (3) are fixedly connected to an oil distribution pipe (8), on the outer surface of which a symmetrical first valve (7) is fixedly installed, and on the upper surfaces of the first salt tank (2) and the second salt tank (3) are both fixedly connected to a hot nitrogen gas connection pipe (6), and both the interior of the first salt tank (2) and the interior of the second salt tank (3) are provided with a salt layer. 13) A steam generator (10) is fixedly installed on the upper surface of the base (1). The output end of the steam generator (10) is fixedly connected to an air intake assembly (11). The outer surfaces of the first salt tank (2) and the second salt tank (3) are both provided with a gas distribution assembly (12). A naphtha recovery tank (5) is fixedly connected to the upper surface of the base (1). The outer surfaces of the first salt tank (2) and the second salt tank (3) are both connected to the back of the naphtha recovery tank (5). The upper surface of the naphtha recovery tank (5) is provided with a symmetrical oil conveying assembly (4).

2. The naphtha reforming, dehydration, and energy-saving device according to claim 1, characterized in that: Both of the oil transfer components (4) include an oil pump (401). Both oil pumps (401) are located on the upper surface of the naphtha recovery tank (5). The output ends of both oil pumps (401) are fixedly connected to an oil extraction pipe (402). The bottom ends of both oil extraction pipes (402) penetrate the naphtha recovery tank (5) and extend into the interior of the naphtha recovery tank (5). The output ends of both oil pumps (401) are fixedly connected to an oil transfer pipe (403). One end of each oil transfer pipe (403) is connected to the outer surface of the first salt tank (2) and the outer surface of the second salt tank (3), respectively.

3. The naphtha reforming, dehydration, and energy-saving device according to claim 1, characterized in that: The outer surface of the oil distribution pipe (8) is fixedly connected to a heavy naphtha connecting pipe (9).

4. The naphtha reforming, dehydration, and energy-saving device according to claim 1, characterized in that: The intake assembly (11) includes an intake pipe (111), and a symmetrical second valve (112) is fixedly installed on the outer surface of the intake pipe (111).

5. The naphtha reforming, dehydration, and energy-saving device according to claim 1, characterized in that: Both of the gas distribution components (12) include a distribution box (121). The two distribution boxes (121) are connected to the outer surfaces of the first salt tank (2) and the second salt tank (3) respectively on their opposite sides. The two distribution boxes (121) are fixedly connected to an upper heating pipe (122) and a lower heating pipe (123) on their opposite sides. The two upper heating pipes (122) and the two lower heating pipes (123) are located inside the first salt tank (2) and the second salt tank (3) respectively.

6. The naphtha reforming, dehydration, and energy-saving device according to claim 1, characterized in that: The front of the naphtha recovery tank (5) is fixedly connected to an oil drain pipe (14), and a third valve (15) is fixedly installed on the outer surface of the oil drain pipe (14).

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