C4 refining device for refinery plant

Abstract

The utility model relates to the technical field of C4 refining, and discloses a C4 refining device for a refinery plant, which comprises a desulfurizing tower, the bottom of the right side of the desulfurizing tower is communicated with a filter pipe, the bottom of the left side of the desulfurizing tower is communicated with a heat exchanger, and the left side and the right side of the top of the heat exchanger are both communicated with connecting pipes. The tops of the two connecting pipes communicate with coolers, the left side of the heat exchanger communicates with a pressurizing pipe, the front side of the pressurizing pipe is fixedly connected with a compressor, the output end of the compressor penetrates through the pressurizing pipe, and the left side of the pressurizing pipe communicates with a rectifying tower. According to the utility model, after being filtered by the filter pipe and desulfurized and purified by the desulfurizing tower, raw materials flow into the heat exchanger for heat exchange, then flow into the cooler for cooling through the connecting pipe, and then are pressurized by the pressurizing pipe under the action of the compressor to enter the rectifying tower, and components are separated by utilizing the float valve tower plate, and relatively pure gas enters the condenser through the gas outlet and the gas conveying pipe to be condensed and stored in the storage tank; a refined product is obtained.

Description

TECHNICAL FIELD

[0001] The utility model relates to carbon four refining technical field especially relates to a carbon four refining device for refinery. BACKGROUND

[0002] The carbon four fraction in refinery is complex, contains unsaturated hydrocarbon and sulfide, can effectively remove impurity using carbon four refining device, sulfide can corrode equipment and produce harmful gas in subsequent processing or product use process, through the desulfurization unit in refining device, appropriate desulfurizer can reduce the sulfide content to very low level, thereby improving the quality of carbon four product.

[0003] Through the retrieval, the utility model discloses a carbon four raw material refining dehydration purification device, specifically relates to carbon four raw material refining technical field, including two dehydration towers, the one side of two dehydration towers is provided with the purification tower, wherein the bottom of dehydration tower and purification tower is provided with fixed cabinet, and the inside of fixed cabinet is provided with adjusting mechanism, wherein the inside of dehydration tower is provided with replacement mechanism, wherein the replacement mechanism includes the installation frame that sets up in the inside of dehydration tower, and the surface of installation frame is provided with a plurality of movable grooves, the inside of a plurality of movable grooves is provided with movable pipe, wherein the bottom of movable pipe is provided with the net of placing, and the top of net of placing is provided with molecular sieve bed layer, the utility model can quickly replace molecular sieve bed layer and inner bed layer, thereby improving the purification quality, and also can control the speed of the material of entering, thereby greatly improving the use effect of device, but in the actual use process, the equipment carries out dehydration purification to raw material through two dehydration towers, and it is more tedious, wastes resources, and can not well separate the harmful substances of raw material. UTILITY MODEL CONTENTS

[0004] In order to make up for the above shortcomings, the utility model provides a carbon four refining device for refinery, which aims to improve the problem that the existing technology is more tedious and cannot well separate the harmful substances of raw material through two dehydration towers.

[0005] In order to achieve the above object, the utility model discloses the following technical scheme: a carbon four refining device for refinery, including desulfurizing tower, the right side bottom of desulfurizing tower is connected with filter pipe, the left side bottom of desulfurizing tower is connected with heat exchanger, the top left and right sides of heat exchanger are all connected with connecting pipe, the top of two connecting pipes is all connected with cooler, the left side of heat exchanger is connected with pressurizing pipe, the front side fixed connection of pressurizing pipe is provided with compressor, the output of compressor penetrates pressurizing pipe, the left side of pressurizing pipe is connected with rectifying tower, the inside equal interval fixed connection of rectifying tower is provided with a plurality of float valve tray, the left side middle upper portion of rectifying tower is provided with gas outlet, the inside fixed connection of gas outlet is provided with gas pipe, the bottom of gas pipe is connected with condenser, the bottom fixed connection of condenser is provided with storage tank, the right side of filter pipe is provided with connecting mechanism.

[0006] Through the above technical scheme: first, the carbon four raw material containing impurities is filtered through the filter pipe and then enters the desulfurizing tower, and the sulfur impurities are removed by a specific desulfurization process to preliminarily purify the raw material. Then, the material flows into the heat exchanger from the left side bottom of the desulfurizing tower, exchanges heat, and optimizes the temperature conditions of the material. The material cooled by heat exchange flows to the cooler through the connecting pipe on the top left and right side, respectively. The cooler cools the material to the appropriate distillation temperature. Then, the cooled material is pressurized by the compressor through the pressurizing pipe. After reaching the operating pressure required by the rectifying tower, it enters the rectifying tower. The multiple float valve trays distributed equidistantly in the rectifying tower make the carbon four mixture partially vaporize and condense multiple times in the tower, realizing the separation of each component. The relatively pure gas after separation is discharged from the gas outlet in the left side middle upper portion of the rectifying tower, enters the condenser through the gas pipe, and is condensed into a liquid by the condenser. Finally, it is collected in the storage tank to obtain the refined carbon four product.

[0007] As a further description of the above technical scheme:

[0008] The connecting mechanism includes a connecting ring one, the inner wall of the connecting ring one is fixedly connected to the outer wall of the right end of the filter pipe, a plurality of buckles are fixedly connected to the right side of the connecting ring one at equal intervals, a plurality of the buckles are provided with a reserved hole on one side, a connecting ring two is arranged on the right side of the connecting ring one, a plurality of clamping grooves are arranged on the left side of the connecting ring two at equal intervals, and a plurality of fixed bolts are rotatably connected to the outer wall of the connecting ring two at equal intervals.

[0009] Through the technical scheme, when the filter pipe needs to be connected, the connecting ring one plays a starting connection function, the inner wall is fixed on the right end outer wall of the filter pipe, a stable foundation is formed, and the material is smoothly entered from the filter pipe. In the assembly process, the connecting ring two is close to the connecting ring one, the buckle is accurately clamped into the corresponding clamping groove, and the relative position of the two is preliminarily fixed. At this time, the reserved hole on the buckle is aligned with the outer wall of the connecting ring two. Then, the multiple fixing bolts equally arranged on the outer wall of the connecting ring two are rotated, so that they pass through the reserved hole and are tightened.

[0010] As a further description of the above technical scheme:

[0011] The front side of the storage tank is fixedly connected with a measuring plate, and multiple scales are equally arranged on the front side of the measuring plate.

[0012] Through the technical scheme, the measuring plate provides an intuitive observation plane for liquid level measurement, and the multiple scales equally arranged thereon can clearly display the liquid level height of the refined carbon four material in the storage tank.

[0013] As a further description of the above technical scheme:

[0014] The front side of the distillation tower is fixedly connected with a switch, and the switch is electrically connected with the compressor.

[0015] Through the technical scheme, the operator can conveniently realize power-on or power-off of the compressor by controlling the switch, and then control the entire material pressurization process.

[0016] As a further description of the above technical scheme:

[0017] The outer wall of the distillation tower is fixedly connected with a reinforcing plate at the upper middle part, and the reinforcing plate is fixedly connected with a support at the four corners of the bottom.

[0018] Through the technical scheme, the reinforcing plate provides additional support force from the upper middle part of the outer wall of the distillation tower, enhances the structural strength of the distillation tower, and prevents the tower body from being deformed due to internal pressure, material flow impact and its own gravity.

[0019] As a further description of the above technical scheme:

[0020] Multiple heat dissipation plates are fixedly connected inside the heat exchanger, and multiple air holes are equally arranged on one side of the multiple heat dissipation plates.

[0021] Through the technical scheme, the heat dissipation plates are equally distributed inside the heat exchanger, greatly increasing the heat exchange area. When the hot material flows through the heat exchanger, the heat can be quickly transferred to the heat dissipation plates, and the multiple air holes on one side of the heat dissipation plates allow the gas to flow smoothly.

[0022] As a further description of the above technical scheme:

[0023] The right side of the connecting ring one is fixedly connected with a sealing ring, and the left side of the connecting ring two is fixedly connected with a sealing groove.

[0024] Through the above technical scheme: when the buckle and the card groove complete the preliminary connection and the fixing bolt is tightened, the sealing ring is tightly embedded in the sealing groove, the connection gap is filled, and the sealing property of the connection part is further enhanced.

[0025] Further description of the above technical scheme:

[0026] The outer wall of the plurality of fixing bolts is slidably connected with a gasket, and one side of the plurality of gaskets is attached to the connecting ring two.

[0027] Through the above technical scheme: when the fixing bolt is tightened, the gasket can disperse the pressure applied by the bolt, and prevent the surface of the connecting ring two from being damaged due to excessive local stress.

[0028] The utility model has the advantages of the following beneficial effects:

[0029] 1. In the utility model, after the carbon four raw material containing impurities is filtered through the filter pipe, desulfurized and purified through the desulfurization tower, flows into the heat exchanger for heat exchange, and then flows to the cooler for cooling through the connecting pipe, and then enters the rectifying tower under the action of the compressor through the pressurizing pipe, separates the components by using the float valve tray, and the relatively pure gas enters the condenser after being condensed through the gas outlet and the gas pipe, and is stored in the storage tank, so that the refined product is obtained.

[0030] 2. In the utility model, when connecting, the connecting ring one is tightly fixed to the right end outer wall of the filter pipe, which lays the foundation for connection, the connecting ring two is close to the buckle and is inserted into the card groove during assembly, the reserved holes are aligned, and finally the fixing bolt is rotated and tightened through the reserved hole, so that the firmness and sealing property of the connection are ensured, the material can be smoothly transmitted, and the stable operation of the whole device is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 A perspective view of a carbon four refining device for a refinery is provided for the utility model;

[0032] Figure 2 A structural cross-sectional view of a carbon four refining device for a refinery is provided for the utility model;

[0033] Figure 3 A heat exchanger structural cross-sectional view of a carbon four refining device for a refinery is provided for the utility model;

[0034] Figure 4 A structural exploded view of a carbon four refining device for a refinery is provided for the utility model;

[0035] Figure 5A local structure schematic view of the carbon four refining device for refinery is provided.

[0036] Legend:

[0037] 1, desulfurization tower; 2, connecting mechanism; 201, connecting ring one; 202, buckle; 203, reserved hole; 204, connecting ring two; 205, clamping groove; 206, fixing bolt; 3, filter pipe; 4, heat exchanger; 5, connecting pipe; 6, cooler; 7, pressurizing pipe; 8, compressor; 9, rectifying tower; 10, float valve tray; 11, gas outlet; 12, gas conveying pipe; 13, condenser; 14, storage tank; 15, measuring plate; 16, scale; 17, switch; 18, reinforcing plate; 19, support; 20, heat sink; 21, air passing hole; 22, sealing ring; 23, sealing groove; 24, gasket. DETAILED DESCRIPTION

[0038] 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 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 skilled in the art without creative labor fall within the scope of the present application.

[0039] Reference Figure 1 , Figure 2 and Figure 3This utility model provides an embodiment of a C4 refining device for refineries, comprising a desulfurization tower 1 to effectively remove sulfur impurities from C4 feedstock. A filter pipe 3 is connected to the bottom right side of the desulfurization tower 1 for filtering the material. A heat exchanger 4 is connected to the bottom left side of the desulfurization tower 1 to facilitate heat exchange between the material and other media, precisely regulating the material temperature. Connecting pipes 5 are connected to the top left and right sides of the heat exchanger 4, serving as material flow channels to smoothly transport the heated material to a cooler 6. The tops of both connecting pipes 5 are connected to the cooler 6, which can rapidly cool the material to the temperature required for distillation, ensuring the distillation effect. A pressure pipe 7 is connected to the left side of the heat exchanger 4, providing a pathway for pressurizing the material to adapt to the operating conditions of the distillation tower 9. A compressor 8 is fixedly connected to the front side of the pressure pipe 7, and the output end of the compressor 8 passes through the pressure pipe 7, ensuring that the pressurized material smoothly enters the subsequent processes. The left side of the pressurization pipe 7 is connected to the distillation column 9. Multiple floating valve trays 10 are fixedly connected at equal intervals inside the distillation column 9 to promote partial vaporization and condensation of the material. The upper left side of the distillation column 9 has an outlet 11 to provide a discharge path for the separated purer gas. The outlet 11 is fixedly connected to a gas delivery pipe 12 to safely transport the gaseous material to the condenser 13. The bottom end of the gas delivery pipe 12 is connected to the condenser 13, which can condense the gaseous material into a liquid for easy storage. The bottom of the condenser 13 is fixedly connected to a storage tank 14 for proper storage of the refined C4 product. The right side of the filter pipe 3 is provided with a connecting mechanism 2 to securely connect adjacent components. The front side of the storage tank 14 is fixedly connected to a measuring plate 15 to provide a visual plane for liquid level observation. Multiple scales 16 are equidistantly opened on the front side of the measuring plate 15, allowing operators to accurately grasp the amount of material stored in the tank.

[0040] Specifically, the C4 feedstock containing impurities first passes through filter pipe 3 and then enters desulfurization tower 1. A specific desulfurization process removes sulfur impurities, initially purifying the feedstock. Next, the feedstock flows from the bottom left side of desulfurization tower 1 into heat exchanger 4 for heat exchange, optimizing the temperature conditions. After cooling through heat exchange, the feedstock flows through connecting pipes 5 on the top left and right sides to cooler 6. Cooler 6 cools the feedstock to a suitable distillation temperature. Subsequently, the cooled feedstock passes through pressurization pipe 7 and is pressurized by compressor 8 to reach the operating pressure required by distillation tower 9 before entering the distillation tower. The mixture enters the distillation column 9, where multiple floating valve trays 10 are evenly distributed inside. This causes the C4 mixture to undergo multiple partial vaporizations and condensations within the column, achieving the separation of the components. The purer gas after separation is discharged from the outlet 11 in the upper left part of the distillation column 9 and enters the condenser 13 through the gas delivery pipe 12. The condenser 13 condenses the gaseous material into a liquid state, which is finally collected in the storage tank 14 to obtain the refined C4 product. The measuring plate 15 provides an intuitive observation plane for liquid level measurement, and the multiple graduations 16 evenly spaced on it can clearly show the liquid level height of the refined C4 material in the storage tank 14.

[0041] With reference to Figure 4 And Figure 5 , the connecting mechanism 2 comprises a connecting ring one 201, the inner wall of the connecting ring one 201 is fixedly connected to the outer wall of the right end of the filter pipe 3, thereby building a stable foundation for the entire connecting structure, ensuring the connection strength with the filter pipe 3, effectively bearing the force of subsequent connecting components and material transmission, a plurality of buckles 202 are fixedly connected to the right side of the connecting ring one 201 at equal intervals, the buckles 202 can be quickly buckled into the corresponding clamping grooves 205, realizing the preliminary positioning of the connecting ring one 201 and the connecting ring two 204, preventing relative displacement of the two at the initial stage of assembly, ensuring efficient opening of the connection process, a plurality of reserved holes 203 are formed on one side of the buckles 202, the reserved holes 203 provide accurate penetration channels for the fixing bolts 206, ensuring accurate bolt installation position, so that subsequent reinforcement operation can be smoothly carried out, the connecting ring two 204 is arranged on the right side of the connecting ring one 201, the connecting ring two 204 is tightly matched with the buckles 202 through a plurality of clamping grooves 205 arranged on the left side at equal intervals, forming a stable pre-connection structure, enhancing the integrity of the connection part, resisting external force pulling to a certain extent, a plurality of fixing bolts 206 are rotatably connected to the outer wall of the connecting ring two 204 at equal intervals, rotating the fixing bolts 206 can make them penetrate through the reserved holes 203 and be tightened, further strengthening the connection tightness of the connecting ring one 201 and the connecting ring two 204, ensuring that the connecting mechanism 2 will not loosen during the material transmission process, maintaining the stability of the material conveying, the outer wall of the plurality of fixing bolts 206 is slidably connected with a plurality of gaskets 24, the gaskets 24 can uniformly disperse the pressure exerted by the bolts when the fixing bolts 206 are tightened, avoiding damage such as indentation and deformation of the surface of the connecting ring two 204 due to excessive local stress, prolonging the service life of the connecting mechanism 2, one side of the plurality of gaskets 24 is in close contact with the connecting ring two 204, and the tightly fitted state effectively fills the small gap between the bolt and the connecting ring two 204, assisting in improving the sealing performance of the connection part;

[0042] Specifically, when the filter pipe 3 needs to be connected, the connecting ring one 201 plays a starting connection function, its inner wall is fixedly connected to the outer wall of the right end of the filter pipe 3, forming a stable foundation, ensuring smooth entry of the material from the filter pipe 3, during assembly, the connecting ring two 204 is placed close to the connecting ring one 201, the buckles 202 are accurately buckled into the corresponding clamping grooves 205, preliminarily fixing the relative position of the two, at this time, the reserved holes 203 on the buckles 202 are aligned with the outer wall of the connecting ring two 204, then, the plurality of fixing bolts 206 arranged at equal intervals on the outer wall of the connecting ring two 204 are rotated to penetrate through the reserved holes 203 and be tightened, when the fixing bolts 206 are tightened, the gaskets 24 can disperse the pressure exerted by the bolts, preventing the surface of the connecting ring two 204 from being damaged due to excessive local stress.

[0043] With reference to Figure 1 , Figure 4 and Figure 5, the lower part of the front side of the rectifying tower 9 is fixedly connected with a switch 17, through which the operator can conveniently control the on-off of the circuit, and the switch 17 is electrically connected with the compressor 8, so that the operator can quickly issue an order to the compressor 8 when the rectifying tower 9 needs to be adjusted. The outer wall of the rectifying tower 9 is fixedly connected with a reinforcing plate 18, which provides strong lateral support from the upper middle part of the outer wall of the rectifying tower 9, effectively dispersing the internal pressure, material impact and load caused by its own gravity. The bottom four corners of the reinforcing plate 18 are fixedly connected with supports 19, which serve as the stable foundation of the reinforcing plate 18 and support the rectifying tower 9 stably. The heat exchanger 4 is fixedly connected with a plurality of heat dissipation plates 20 inside it at equal intervals. The heat dissipation plates 20 are in full contact with the material through a large metal surface, quickly absorbing the heat of the material. A plurality of air holes 21 are formed on one side of the heat dissipation plates 20 at equal intervals to accelerate heat exchange. The right side of the connecting ring one 201 is fixedly connected with a sealing ring 22, which is tightly embedded in the sealing groove 23 of the connecting ring two 204 after the assembly of the connecting mechanism 2, forming a reliable sealing line. The left side of the connecting ring two 204 is fixedly connected with a sealing groove 23, which is accurately matched with the sealing ring 22, tightly matched with each other, filling the connection gap and further enhancing the sealing performance of the connection part.

[0044] Specifically, the operator can conveniently realize power-on or power-off of the compressor 8 by operating the switch 17, thereby controlling the entire material pressurization process. The reinforcing plate 18 provides additional support from the upper middle part of the outer wall of the rectifying tower 9, enhancing the structural strength of the rectifying tower 9 and preventing deformation of the tower body due to internal pressure, material flow impact and its own gravity. The heat dissipation plates 20 are distributed inside the heat exchanger 4 at equal intervals, greatly increasing the heat exchange area. When hot material flows through the heat exchanger 4, heat can be quickly transferred to the heat dissipation plates 20, and the plurality of air holes 21 on one side of the heat dissipation plates 20 allow gas to pass smoothly. The sealing ring 22 cooperates with the sealing groove 23. When the buckle 202 and the clamping groove 205 are initially connected and the fixing bolt 206 is tightened, the sealing ring 22 is tightly embedded in the sealing groove 23, filling the connection gap and further enhancing the sealing performance of the connection part.

[0045] Working principle: when using the carbon four refining device of refinery, first, the carbon four raw material containing impurities is filtered through the filter pipe 3, and then enters the desulfurization tower 1, and the sulfur impurities are removed through the specific desulfurization process, and the raw material is preliminarily purified, then, the material flows into the heat exchanger 4 from the left side bottom of the desulfurization tower 1, and the heat exchange is carried out, and the temperature condition of the material is optimized, and the material cooled by heat exchange flows to the cooler 6 through the connecting pipe 5 on the top left and right side, and the cooler 6 cools the material to the appropriate distillation temperature, and then the cooled material is pressurized through the pressurizing pipe 7 under the action of the compressor 8, and enters the distillation tower 9 after reaching the operating pressure required by the distillation tower 9, and the multiple float valve trays 10 distributed equidistantly in the distillation tower 9 make the carbon four mixture partially vaporize and condense in the tower multiple times to realize the separation of each component, and the relatively pure gas after separation is discharged from the gas outlet 11 on the left side of the upper part of the distillation tower 9, and then enters the condenser 13 through the gas pipe 12, and the condenser 13 condenses the gaseous material into liquid, and finally collects in the storage tank 14 to obtain the refined carbon four product, and when the filter pipe 3 needs to be connected, the connecting ring one 201 plays the initial connection function, and the inner wall is fixed tightly on the right end outer wall of the filter pipe 3 to form a stable foundation and ensure that the material flows smoothly from the filter pipe 3, and during assembly, the connecting ring two 204 is close to the connecting ring one 201, so that the buckle 202 is accurately clamped into the corresponding clamping groove 205 to preliminarily fix the relative position of the two, at this time, the reserved hole 203 on the buckle 202 is aligned with the outer wall of the connecting ring two 204, and then the multiple fixing bolts 206 equidistantly arranged on the outer wall of the connecting ring two 204 are rotated to pass through the reserved hole 203 and are tightened.

[0046] Finally, it should be pointed out that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included in the protection scope of the present application.

Claims

1. A C4 refining unit for a refinery, comprising a desulfurization tower (1), characterized in that: The bottom right side of the desulfurization tower (1) is connected to a filter pipe (3), and the bottom left side of the desulfurization tower (1) is connected to a heat exchanger (4). The top left and right sides of the heat exchanger (4) are connected to connecting pipes (5), and the tops of the two connecting pipes (5) are connected to coolers (6). The left side of the heat exchanger (4) is connected to a pressurization pipe (7), and the front side of the pressurization pipe (7) is fixedly connected to a compressor (8). The output end of the compressor (8) passes through the pressurization pipe (7). (7) is connected to a distillation column (9) on the left side. Multiple floating valve trays (10) are fixedly connected at equal intervals inside the distillation column (9). An outlet (11) is opened in the upper middle part of the left side of the distillation column (9). A gas supply pipe (12) is fixedly connected inside the outlet (11). A condenser (13) is connected to the bottom end of the gas supply pipe (12). A storage tank (14) is fixedly connected to the bottom of the condenser (13). A connecting mechanism (2) is provided on the right side of the filter tube (3).

2. The C4 refining apparatus for refineries according to claim 1, characterized in that: The connecting mechanism (2) includes a connecting ring one (201), the inner wall of the connecting ring one (201) is fixedly connected to the outer wall of the right end of the filter tube (3), and multiple buckles (202) are fixedly connected at equal intervals on the right side of the connecting ring one (201). Each of the multiple buckles (202) has a reserved hole (203) on one side. A connecting ring two (204) is provided on the right side of the connecting ring one (201), and multiple slots (205) are provided at equal intervals on the left side of the connecting ring two (204). Multiple fixing bolts (206) are rotatably connected at equal intervals on the outer wall of the connecting ring two (204).

3. The C4 refining apparatus for refineries according to claim 1, characterized in that: A measuring plate (15) is fixedly connected to the front side of the storage tank (14), and multiple scales (16) are equidistantly opened on the front side of the measuring plate (15).

4. A C4 refining apparatus for refineries according to claim 1, characterized in that: A switch (17) is fixedly connected to the lower front side of the distillation column (9), and the switch (17) is electrically connected to the compressor (8).

5. A C4 refining apparatus for refineries according to claim 1, characterized in that: A reinforcing plate (18) is fixedly connected to the upper part of the outer wall of the distillation column (9), and a bracket (19) is fixedly connected to the four corners of the bottom of the reinforcing plate (18).

6. A C4 refining apparatus for refineries according to claim 1, characterized in that: The heat exchanger (4) has multiple heat dissipation plates (20) fixedly connected at equal intervals inside, and multiple air passage holes (21) are opened at equal intervals on one side of each of the multiple heat dissipation plates (20).

7. A C4 refining apparatus for refineries according to claim 2, characterized in that: A sealing ring (22) is fixedly connected to the right side of the first connecting ring (201), and a sealing groove (23) is fixedly connected to the left side of the second connecting ring (204).

8. A C4 refining apparatus for refineries according to claim 2, characterized in that: The outer walls of the plurality of fixing bolts (206) are slidably connected with washers (24), and one side of each of the plurality of washers (24) is in contact with the connecting ring (204).

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