Naphtha gasification device

Abstract

The utility model discloses a naphtha gasification device, and relates to the technical field of naphtha gasification, in particular to a naphtha gasification device which comprises a base, a gasification mechanism is arranged on the base and used for converting naphtha into gas, and the gasification mechanism comprises a main body assembly, a gas inlet assembly, a gas outlet assembly and a gas outlet assembly, the naphtha inlet is formed in the rear end of the gasifier, the first electric heater is installed at the right end in the gasifier, the first outlet diffusing opening, the heat conduction oil filling opening and the purging opening are sequentially formed in the top of the gasifier from left to right, and the emptying opening is formed in the bottom of the gasifier; the reheating assembly comprises a shell fixed to the rear end of the top of the base, and the shell is connected with the gasifier through a pipeline; the heat-conducting oil is used as a heat transfer medium, so that in an allowable temperature range, the heat stability is relatively good, the coking is less, the service life is relatively long, and the heat-conducting property, the flowing property and the pumpable property are good; in addition, gasified naphtha is reheated through the reheating assembly, and gasification is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of naphtha gasification, in particular to a naphtha gasification device. Background Technique

[0002] Naphtha, also known as chemical light oil and crude gasoline, is mainly used as a reforming and chemical raw material, and can be separated into various organic raw materials such as gasoline, benzene, kerosene, asphalt, etc. Naphtha is a light oil product obtained by distilling crude oil or cutting corresponding fractions through secondary processing of petroleum. Its boiling range depends on requirements and is usually a relatively wide distillation range, such as 30 - 220 °C. Naphtha is an important raw material for producing ethylene and propylene by cracking in a tubular furnace and producing benzene, toluene, and xylene by catalytic reforming. As a cracking raw material, it is required that the content of alkanes and cycloalkanes in the naphtha composition is not less than 70% (by volume);

[0003] Vaporization has two forms: evaporation and boiling. It is a process of changing an object from a liquid state to a gaseous state. Physically, the vaporization phenomenon that occurs only on the surface of an object is called evaporation, which can occur under any circumstances. When a liquid evaporates, it needs to absorb heat. Boiling is a violent vaporization process that occurs simultaneously on the surface and inside of a liquid at the same temperature. When a liquid boils, it needs to absorb heat;

[0004] After investigation, the publication number: CN207279684U discloses a naphtha gasification device. In this technology, "a naphtha gasification device is disclosed, including a gasification tank. A driving motor is provided at the top of the gasification tank. The bottom of the driving motor is connected to a rotating shaft. The rotating shaft penetrates and connects the top of the gasification tank, and a stirring blade is connected to the rotating shaft. One side of the top of the gasification tank is connected to a feeding port. Heaters are provided on both sides of the inner wall of the gasification tank. The bottom of the gasification tank is connected to a discharge pipe. A switching valve is installed on the discharge pipe. One side of the discharge pipe is connected to a collection tank" and other technical solutions, and has technical effects such as "adding naphtha to the gasification tank through the feeding port, heating and raising the temperature by the heater, driving the rotating shaft to rotate by the driving motor, thereby stirring the liquid, increasing the heating area, accelerating gasification. The naphtha liquid that has not been completely gasified can be discharged to the collection tank by opening the switching valve. The liquid in the collection tank can be added to the gasification tank again through a circulation pipe for gasification, and the gasified gas enters the gas collection tank through a gas collection pipe for collection";

[0005] The above solution drives the rotating shaft to rotate through a driving motor, thereby stirring the liquid, increasing the heating area, and accelerating gasification; however, although stirring can increase the heating area of the liquid, in some cases, due to factors such as liquid viscosity and gasification temperature, the stirring effect may be limited. Especially when the liquid is close to the gasification point, its fluidity may become poor, and the stirring effect will be further reduced. Content of the Utility Model

[0006] In view of the deficiencies of the prior art, the present utility model provides a naphtha gasification device, which uses heat-conducting oil as a heat transfer medium. Within the allowable temperature range, it has good thermal stability, less coking, a longer service life, and good thermal conductivity, fluidity, and pumpability. Moreover, the gasified naphtha is reheated by a reheating component, which accelerates gasification.

[0007] To achieve the above objectives, the present utility model is realized through the following technical solutions: A naphtha gasification device, including a base, on which a gasification mechanism is provided and used to convert naphtha into gas. The gasification mechanism includes:

[0008] A main body component, including a vaporizer fixed at the front end of the top of the base, a naphtha inlet provided at the rear end of the vaporizer, a first electric heater installed at the right end inside the vaporizer, a first outlet, a blow-off port, a heat-conducting oil filling port, and a purge port arranged in sequence from left to right at the top of the vaporizer, and a drain port provided at the bottom of the vaporizer;

[0009] A reheating component, including a housing fixed at the rear end of the top of the base, and the housing is connected to the vaporizer through a pipeline.

[0010] Preferably, the main body component further includes a first blowdown port installed on the pipeline between the housing and the vaporizer, a naphtha outlet provided at the front end of the reheating component, a first blow-off port provided at the top of the reheating component, and a second blowdown port provided at the bottom of the reheating component.

[0011] Preferably, the reheating component further includes a front head and a rear head respectively fixed at the left and right ends of the housing, sealing plates installed inside both the front head and the rear head, a plurality of tube bundles installed between the two side sealing plates, and two arc-shaped frames installed symmetrically up and down inside the housing.

[0012] Preferably, the reheating component further includes a plurality of baffle plates installed on the arc-shaped frames, a plurality of round holes opened inside the baffle plates, positioning rings fixed on the surfaces at both ends of the round holes, and buffer pads installed on the inner walls of the positioning rings.

[0013] Preferably, the reheating component further includes a connecting piece installed on the outer edge of the baffle plate, and the outer wall of the connecting piece is fixed to the inner wall of the arc-shaped frame.

[0014] Preferably, the main body component further includes a second electric heater installed at the right end inside the rear head, and an electrical cabinet installed at the right end of the top of the base.

[0015] Beneficial effects

[0016] The present utility model provides a naphtha gasification device. Compared with the prior art, it has the following beneficial effects:

[0017] (1) Add heat transfer oil through the heat transfer oil filling port, then introduce naphtha into the coil in the vaporizer through the naphtha inlet, and heat it up through the first electric heater to accelerate vaporization. Then, the heat transfer oil is discharged through the drain port, and the vaporized naphtha enters the reheating component for reheating. Finally, the naphtha that has completed the vaporization process is discharged through the naphtha outlet. This naphtha vaporization process has a high safety factor, a reasonable structure, stable operation, and the equipment is safe and reliable, easy to operate, and meets the technical parameter requirements under different flow rates.

[0018] (2) By using heat transfer oil as the heat transfer medium, within the allowable temperature range, it has good thermal stability, less coking, a longer service life, and good thermal conductivity, fluidity, and pumpability.

[0019] (3) When the baffle plate fixes the tube bundle, buffering can be carried out through the positioning ring in cooperation with the buffer pad to reduce the impact caused by the vibration generated by the fluid flow on the reheating component, reduce the vibration of the tube bundle, and improve the heat transfer efficiency. Brief Description of the Drawings

[0020] Figure 1 It is a front view structural schematic diagram of the present utility model;

[0021] Figure 2 It is a top view structural schematic diagram of the present utility model;

[0022] Figure 3 It is a sectional structural schematic diagram of the reheating component in the present utility model;

[0023] Figure 4 It is a disassembled structural schematic diagram inside the reheating component in the present utility model;

[0024] Figure 5 It is a sectional structural schematic diagram of the baffle plate in the present utility model.

[0025] In the figure: 1, base; 2, vaporization mechanism; 21, main body component; 211, vaporizer; 212, naphtha inlet; 213, first electric heater; 214, first outlet vent; 215, heat transfer oil filling port; 216, purge port; 217, drain port; 218, first blowdown port; 219, first vent; 2110, second blowdown port; 2111, naphtha outlet; 2112, electrical cabinet; 2113, second electric heater; 22, reheating component; 221, housing; 222, front head; 223, rear head; 224, sealing plate; 225, tube bundle; 226, arc-shaped frame; 227, baffle plate; 228, round hole; 229, positioning ring; 2210, buffer pad; 2211, connecting piece. Detailed Embodiment

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0027] Please refer to Figures 1-5 , the present utility model provides a technical solution for a naphtha gasification device: The naphtha gasification device includes a base 1, on which a gasification mechanism 2 is provided and used to convert naphtha into gas. The gasification mechanism 2 includes:

[0028] A main body assembly 21, including a vaporizer 211 fixed at the front end of the top of the base 1, a naphtha inlet 212 arranged at the rear end of the vaporizer 211, a first electric heater 213 installed at the right end inside the vaporizer 211, a first outlet vent 214, a heat transfer oil filling port 215, and a purging port 216 arranged in sequence from left to right at the top of the vaporizer 211, and a drain port 217 arranged at the bottom of the vaporizer 211;

[0029] A reheating assembly 22, including a housing 221 fixed at the rear end of the top of the base 1, and the housing 221 is connected to the vaporizer 211 through a pipeline.

[0030] In this implementation scheme, heat transfer oil is added through the heat transfer oil filling port 215, then naphtha enters the coil in the vaporizer 211 through the naphtha inlet 212, and is heated and raised in temperature by the first electric heater 213 to accelerate gasification. Then the heat transfer oil is discharged through the drain port 217, and the gasified naphtha enters the reheating assembly 22 for reheating. Finally, the naphtha that has completed the gasification process is discharged through the naphtha outlet 2111. This naphtha gasification process has a high safety factor, a reasonable structure, stable operation, and the equipment is safe and reliable, easy to operate, and meets the technical parameter requirements under different flow rates.

[0031] Specifically, the main body assembly 21 further includes a first sewage discharge port 218 installed on the pipeline between the housing 221 and the vaporizer 211, a naphtha outlet 2111 arranged at the front end of the reheating assembly 22, a first vent 219 arranged at the top of the reheating assembly 22, and a second sewage discharge port 2110 arranged at the bottom of the reheating assembly 22.

[0032] In this embodiment, by using heat transfer oil as the heat transfer medium, within the allowable temperature range, it has good thermal stability, less coking, a longer service life, and good thermal conductivity, fluidity, and pumpability.

[0033] Specifically, the reheating assembly 22 further includes a front head 222 and a rear head 223 respectively fixed to the left and right ends of the housing 221. Sealing plates 224 are installed inside both the front head 222 and the rear head 223. A number of tube bundles 225 are installed between the two sealing plates 224 on both sides. Two arc-shaped frames 226 that are symmetrically arranged up and down are installed inside the housing 221.

[0034] In this embodiment, the baffle plate 227 is used to support the tube bundles 225 inside the housing 221, reduce the vibration of the tube bundles 225, and improve the heat transfer efficiency.

[0035] Specifically, the reheating assembly 22 further includes a number of baffle plates 227 installed on the arc-shaped frames 226. A number of round holes 228 are opened inside the baffle plates 227. Positioning rings 229 are fixed on the surfaces at both ends of the round holes 228. Buffer pads 2210 are installed on the inner walls of the positioning rings 229.

[0036] In this embodiment, when the baffle plate 227 fixes the tube bundles 225, buffering can be achieved through the cooperation of the positioning ring 229 and the buffer pad 2210, reducing the impact caused by the vibration generated by the fluid flow on the reheating assembly 22.

[0037] Specifically, the reheating assembly 22 further includes a connecting piece 2211 installed on the outer edge of the baffle plate 227, and the outer wall of the connecting piece 2211 is fixed to the inner wall of the arc-shaped frame 226.

[0038] In this embodiment, the baffle plate 227 and the arc-shaped frame 226 can be disassembled and assembled through the connecting piece 2211, and the arc-shaped frame 226 and the sealing plate 224 can be disassembled and assembled, enabling the entire reheating assembly 22 to be disassembled and assembled, which is convenient for disassembling and replacing the internal tube bundles 225.

[0039] Specifically, the main body assembly 21 further includes a second electric heater 2113 installed at the right end inside the rear head 223, and an electrical cabinet 2112 installed at the right end of the top of the base 1.

[0040] In this embodiment, a toxic gas leakage detection alarm and instruments such as liquid level, pressure, and temperature can be installed on the vaporizer 211. The data of each instrument is transmitted to the electrical cabinet 2112 and monitored and interlocked through the PLC control system.

[0041] Working principle and usage process of the present utility model: First, heat-conducting oil is added through the heat-conducting oil filling port 215. Then, naphtha enters the coil in the vaporizer 211 through the naphtha inlet 212 and is heated and raised in temperature by the first electric heater 213 to accelerate vaporization. Then, the heat-conducting oil is discharged through the drain port 217. The vaporized naphtha then enters the reheating assembly 22 for reheating. Finally, the naphtha that has completed the vaporization process is discharged through the naphtha outlet 2111. Moreover, a toxic gas leakage detection alarm and instruments such as liquid level, pressure, and temperature can be installed on the vaporizer 211, and the data of each instrument is transmitted to the electrical cabinet 2112 and monitored and interlocked through the PLC control system.

[0042] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device.

[0043] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A naphtha gasification device, comprising a base (1), characterized in that: The base (1) is provided with a gasification mechanism (2) for converting naphtha into gas. The gasification mechanism (2) includes: A main body component (21), including a vaporizer (211) fixed to the front end of the top of the base (1), a naphtha inlet (212) provided at the rear end of the vaporizer (211), a first electric heater (213) installed at the right end inside the vaporizer (211), a first outlet relief port (214), a heat transfer oil filling port (215), and a purging port (216) arranged in sequence from left to right at the top of the vaporizer (211), and a drain port (217) provided at the bottom of the vaporizer (211); A reheating component (22), including a housing (221) fixed to the rear end of the top of the base (1), and the housing (221) is connected to the vaporizer (211) through a pipeline.

2. The naphtha gasification device according to claim 1, characterized in that: The main body component (21) further includes a first blowdown port (218) installed on the pipeline between the housing (221) and the vaporizer (211), a naphtha outlet (2111) provided at the front end of the reheating component (22), a first relief port (219) provided at the top of the reheating component (22), and a second blowdown port (2110) provided at the bottom of the reheating component (22).

3. The naphtha gasification device according to claim 1, wherein: The reheating component (22) further includes a front head (222) and a rear head (223) respectively fixed to the left and right ends of the housing (221), sealing plates (224) installed inside both the front head (222) and the rear head (223), a plurality of tube bundles (225) installed between the two side sealing plates (224), and two arc-shaped frames (226) symmetrically installed up and down inside the housing (221).

4. The naphtha gasification device according to claim 3, characterized in that: The reheating component (22) further includes a plurality of baffle plates (227) installed on the arc-shaped frames (226), a plurality of round holes (228) opened inside the baffle plates (227), positioning rings (229) fixed to both ends of the surfaces of the round holes (228), and buffer pads (2210) installed on the inner walls of the positioning rings (229).

5. The naphtha gasification device according to claim 3, wherein: The reheating component (22) further includes a connecting piece (2211) installed on the outer edge of the baffle plate (227), and the outer wall of the connecting piece (2211) is fixed to the inner wall of the arc-shaped frame (226).

6. The naphtha gasification device according to claim 3, characterized in that: The main body component (21) further includes a second electric heater (2113) installed at the right end inside the rear head (223), and an electrical cabinet (2112) installed at the right end of the top of the base (1).

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