Rectifying tower

Abstract

The invention relates to the technical field of butadiene production devices, in particular to a rectifying tower which comprises a plurality of barrels and at least one first drainage pipe, and a manhole is formed in the inner wall of at least one of the barrels; the barrel provided with the manhole comprises a first containing cavity and a second containing cavity, the first containing cavity can contain liquid, and the manhole is formed in the position, corresponding to the second containing cavity, of the side wall of the barrel; one end of the first drainage pipe is communicated with the first accommodating cavity of the barrel where the corresponding manhole is located, and the first drainage pipe is used for guiding liquid in the corresponding first accommodating cavity to the manhole. The liquid in the first drainage pipe can be sprayed to the position near the manhole at a high flow speed under the pressure effect of the liquid in the first containing cavity, and the flushing effect is improved. Therefore, part of butadiene polymer near the manhole can be cleaned, the butadiene polymer can be prevented from continuously generating near the manhole, and accumulation of the butadiene polymer is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of butadiene production equipment, and relates to a distillation tower. Background Art

[0002] In the prior art, a distillation tower for preparing butadiene is provided with at least one manhole. Since butadiene stays in the distillation tower for a long time, butadiene polymers are easily formed at the manholes. When a large amount of butadiene polymers are accumulated, the detached butadiene polymers are easily damaged to the pipelines and other components in the distillation tower, as follows: During the manufacturing process of the refining tower of the butadiene unit, there is a barrel section at the manhole position, and there is a dead zone in the upper part of the barrel section. Due to the self-polymerization characteristics of butadiene, the gas phase butadiene stays in the tower for a long time, and the material temperature is high, which is easy to produce polymers in the dead zone of the barrel section. Butadiene polymer is a chain reaction, which will further accelerate the polymerization reaction. After the produced polymer falls to a certain amount in the lower part of the barrel section, it collapses and enters the tower plate, eventually leading to the blockage of the tower plate, and the distillation tower is forced to shut down for processing. There are dead corners in the areas such as the liquid level gauge and pressure gauge leads of the distillation tower kettle, and the material is not easy to flow. Therefore, self-polymerization is easy to occur in the parts such as the liquid level gauge and pressure gauge leads to generate self-polymers. The self-polymers are easy to deposit at the liquid level gauge and pressure gauge leads, thereby blocking the liquid level gauge and pressure gauge leads, causing false display of the liquid level of the liquid level gauge and false display of the pressure of the pressure gauge, affecting normal production.

[0003] In addition, when designing butadiene plants, every effort is made to avoid dead corners, but the manhole in the tower is not included in the scope of dead corners. In fact, the manhole is the largest dead corner in the butadiene plant, which provides unique conditions for the production and growth of polymers. Summary of the invention

[0004] The present invention provides a distillation tower, which overcomes the shortcomings of the above-mentioned prior art and can effectively solve the problem that butadiene polymers are easily accumulated at the manhole of the distillation tower, and the long-term accumulated butadiene polymers are easily damaged to the pipelines and other components in the distillation tower after falling off.

[0005] The technical solution of the present invention is achieved through the following measures: a distillation tower.

[0006] Specifically, the present invention is achieved through the following technical solutions: According to a first aspect of the present invention, there is provided a distillation tower, comprising: a main body, comprising a plurality of cylinders, the plurality of cylinders being arranged in sequence along the height direction of the distillation tower, the inner wall of at least one of the plurality of cylinders being provided with a manhole; the cylinder provided with the manhole comprising a first accommodating chamber and a second accommodating chamber, the first accommodating chamber being close to the top of the distillation tower, the second accommodating chamber being close to the bottom of the distillation tower, the first accommodating chamber being capable of accommodating liquid, and the manhole being provided on the inner wall of the second accommodating chamber; and at least one first drainage pipe, one end of the first drainage pipe being connected to the first accommodating chamber of the cylinder where the corresponding manhole is located, and extending in a direction toward the manhole, the first drainage pipe being used to guide the liquid in the corresponding first accommodating chamber to the manhole.

[0007] The distillation tower proposed in the present application includes a main body, and the main body includes a plurality of cylinders, and the plurality of cylinders are connected in turn along the height direction of the distillation tower. At least one of the plurality of cylinders is provided with a manhole, and the manhole is provided on the side wall of the cylinder. Understandably, during the operation of the distillation tower, there is a large amount of gas-phase butadiene in the distillation tower, and the gas-phase butadiene stays in the distillation tower for a long time, so it is easy to produce butadiene polymer in the corner area. Since butadiene has self-polymerization, this will aggravate the polymerization of butadiene polymer in the corner. After the butadiene polymer reaches a certain amount, the butadiene polymer falls off from the corner, and the butadiene polymer that falls off is easy to cause blockage or damage to the pipeline and other components in the distillation tower, thereby affecting the operation of the distillation tower. The manhole is a large dead corner in the distillation tower. If the surrounding of the manhole is not treated, a large amount of butadiene polymer will be generated around the manhole. In order to prevent the butadiene polymer from accumulating in large quantities around the manhole, the present application is provided with a structure for cleaning the butadiene polymer in the cylinder provided with the manhole.

[0008] Further, the cylinder with a manhole includes a first accommodating chamber and a second accommodating chamber, the first accommodating chamber is close to the top of the distillation tower, and the second accommodating chamber is close to the bottom of the distillation tower, that is, the first accommodating chamber is located above the second accommodating chamber. The first accommodating chamber can accommodate liquid, and the manhole is arranged on the side wall of the second accommodating chamber. The distillation tower also includes at least one first drainage pipe, the first drainage pipe is arranged in a one-to-one correspondence with the manhole, one end of the first drainage pipe is connected to the first accommodating chamber of the cylinder where the corresponding manhole is located, and the liquid in the first accommodating chamber can flow into the first drainage pipe. The first drainage pipe extends in the direction toward the manhole. Since the manhole is arranged on the inner wall of the second accommodating chamber located below the first accommodating chamber, the liquid in the first drainage pipe can flow to the manhole under the hydraulic action of the liquid in the first accommodating chamber. In this way, the manhole and its surroundings can be cleaned by the first drainage pipe, so that part of the butadiene polymer near the manhole can be cleaned, and the butadiene polymer can be prevented from continuing to be generated near the manhole, thereby preventing the accumulation of butadiene polymer.

[0009] By dividing the cylinder where the manhole is located into a first accommodating chamber and a second accommodating chamber, and providing a first drainage pipe extending from the first accommodating chamber to the manhole, the liquid in the first accommodating chamber can be guided to the manhole through the first drainage pipe to flush the vicinity of the manhole. Since the first accommodating chamber is located above the second accommodating chamber, the liquid in the first drainage pipe can be sprayed toward the vicinity of the manhole at a higher flow rate under the pressure of the liquid in the first accommodating chamber, thereby improving the flushing effect. In this way, part of the butadiene polymer near the manhole can be cleaned, and the butadiene polymer can be prevented from continuing to be generated near the manhole, thereby preventing the accumulation of the butadiene polymer.

[0010] In some technical solutions, the first containing chamber is capable of containing a liquid containing an inhibitor.

[0011] In this technical solution, the liquid in the first accommodation chamber contains a polymerization inhibitor, which can prevent butadiene from undergoing a polymerization reaction, thereby preventing the generation of butadiene polymers. The liquid containing the polymerization inhibitor is discharged to the manhole through the first drainage pipe, which can, on the one hand, flush the butadiene polymer near the manhole to clean off part of the butadiene polymer near the manhole, and on the other hand, the polymerization inhibitor contained in the liquid can prevent the polymerization reaction of butadiene and prevent the generation of butadiene polymers.

[0012] In some technical solutions, one end of the first drainage pipe extends into the manhole.

[0013] In this technical solution, the positional relationship between the first drainage tube and the manhole is defined, specifically, one end of the first drainage tube extends into the manhole. In this way, the liquid discharged by the first drainage tube can more fully contact the inner wall of the manhole, further improving the flushing effect of the first drainage tube on the manhole, so that more butadiene polymer in the manhole can fall off from the wall of the manhole under the flushing of the liquid discharged by the first drainage tube.

[0014] In some technical solutions, one end of the first drainage pipe extending into the manhole is close to the top wall of the manhole.

[0015] In this technical solution, the positional relationship between the first drainage tube and the manhole is further defined. Specifically, one end of the first drainage tube extending into the manhole is close to the top wall of the manhole. Understandably, compared with the butadiene polymer polymerized on the bottom wall of the manhole, the butadiene polymer polymerized on the top wall of the manhole is more likely to fall off under the action of gravity, and therefore, the butadiene polymer polymerized on the top wall of the manhole is more harmful. By making the end of the first drainage tube extending into the manhole close to the top wall of the manhole, the butadiene polymer polymerized on the top wall of the manhole can be preferentially removed through the first drainage tube to reduce the damage to the pipeline in the cylinder caused by the falling of the butadiene polymer.

[0016] In some technical solutions, there is a distance between the first drainage pipe and the inner wall of the manhole.

[0017] In this technical solution, the positional relationship between the first drainage tube and the manhole is further defined. Specifically, there is a spacing between the first drainage tube and the inner wall of the manhole. Understandably, if the first drainage tube is attached to the inner wall of the manhole, the first drainage tube will block the butadiene polymer, which will weaken the flushing effect of the liquid flow on the butadiene polymer. In order to avoid this problem, the present application provides a certain spacing between the first drainage tube and the inner wall of the manhole so that the liquid flow can fully contact the butadiene polymer and improve the flushing effect.

[0018] In some technical solutions, the first drainage tube is a flexible tube.

[0019] In this technical solution, the first drainage tube is configured as a flexible tube to avoid interference between the first drainage tube and other components or pipelines in the cylinder, so as to facilitate the arrangement of the first drainage tube.

[0020] In some technical solutions, the distillation tower further includes: at least one first tower plate, any first tower plate is arranged in the corresponding cylinder, and the first tower plate divides the corresponding cylinder into a first accommodating chamber and a second accommodating chamber.

[0021] In the technical solution, the structure of the distillation tower is further defined. The distillation tower also includes at least one first tower plate, which is arranged in one-to-one correspondence with the cylinder body provided with the manhole, and the first tower plate is arranged in the corresponding cylinder body. By arranging the first tower plate in the cylinder body, the corresponding cylinder body can be divided into a first accommodating chamber and a second accommodating chamber by the first tower plate.

[0022] In some technical solutions, the first tower plate is provided with through holes.

[0023] In this technical solution, the first tray is defined, specifically, the first tray is provided with a through hole. By providing the through hole on the first tray, part of the pipeline can pass through the first tray through the through hole to avoid interference between the first tray and the pipeline in the distillation tower.

[0024] In some technical solutions, when there are multiple manholes, the multiple manholes are arranged in sequence along the height direction of the distillation tower.

[0025] In this technical solution, the manhole is limited. Specifically, when there are multiple manholes, the multiple manholes are arranged in sequence along the height direction of the distillation tower. The number of manholes can be 2 or 3, and the multiple manholes are arranged in sequence along the height direction of the distillation tower. In addition, the number of manholes does not exceed 3. If the number of manholes is too large, it will cause a large amount of butadiene polymer to aggregate, which is easy to damage the pipeline in the distillation tower.

[0026] In some technical solutions, the distillation tower further includes: at least one detection device, which is disposed on the wall of at least one cylinder among the multiple cylinders, and is used to detect parameters inside the cylinder.

[0027] In this technical solution, the structure of the distillation tower is further limited. The distillation tower also includes at least one detection device, which is arranged on the wall of at least one of the multiple cylinders. The detection device can detect the parameters in the cylinder to ensure that the distillation tower can operate normally. The detection device can be a liquid level meter, which can detect the liquid level height in the cylinder.

[0028] In some technical solutions, the detection device has a detection lead, and the detection lead extends into the corresponding cylinder.

[0029] In this technical solution, the detection device is defined. In order to facilitate the detection device to detect the parameters in the cylinder, a detection lead is also provided in the detection device, and the detection lead extends into the corresponding cylinder to detect the parameters in the cylinder. By providing the detection lead in the detection device, the detection accuracy of the detection device can be improved.

[0030] In some technical solutions, the cylinder provided with the detection device includes a third accommodating chamber and a fourth accommodating chamber, the third accommodating chamber is close to the top of the distillation tower, and the fourth accommodating chamber is close to the bottom of the distillation tower. The third accommodating chamber can accommodate liquid, and the detection lead extends into the corresponding fourth accommodating chamber; at least one second drainage tube, one end of which is connected to the corresponding third accommodating chamber and extends in a direction toward the corresponding detection lead, and the second drainage tube is used to guide the liquid in the third accommodating chamber to the detection lead.

[0031] In this technical solution, since the detection lead of the detection device extends into the cylinder, some dead angle areas will be formed near the detection lead. In order to prevent butadiene from forming polymers in the dead angle areas near the detection lead, the present application provides a structure for cleaning butadiene polymers in the cylinder provided with the detection device. The cylinder provided with the detection device includes a third accommodating chamber and a fourth accommodating chamber, the third accommodating chamber is close to the top of the distillation tower, and the fourth accommodating chamber is close to the bottom of the distillation tower, that is, the third accommodating chamber is located above the fourth accommodating chamber. The third accommodating chamber can accommodate liquid, and the detection lead extends into the fourth accommodating chamber. The distillation tower also includes at least one second drainage tube, which is arranged in a one-to-one correspondence with the detection device, and one end of the second drainage tube is connected to the third accommodating chamber of the cylinder where the corresponding detection device is located, and the liquid in the third accommodating chamber can flow into the second drainage tube. The second drainage tube extends in the direction toward the detection lead. Since the detection lead extends into the fourth accommodating chamber located below the third accommodating chamber, the liquid in the second drainage tube can flow to the detection lead under the hydraulic pressure of the liquid in the third accommodating chamber. In this way, the detection lead and its surroundings can be cleaned through the second drainage tube, so as to clean off part of the butadiene polymer near the detection lead, and prevent the butadiene polymer from continuing to be generated near the detection lead, thereby preventing the accumulation of the butadiene polymer.

[0032] By dividing the cylinder where the detection device is located into a third accommodating chamber and a fourth accommodating chamber, and providing a second drainage tube extending from the third accommodating chamber to the detection lead, the liquid in the third accommodating chamber can be guided to the detection lead through the second drainage tube to flush the dead corner near the detection lead. Since the third accommodating chamber is located above the fourth accommodating chamber, the liquid in the second drainage tube can be sprayed toward the vicinity of the detection lead at a higher flow rate under the pressure of the liquid in the third accommodating chamber, thereby improving the flushing effect. In this way, part of the butadiene polymer near the detection lead can be cleaned, and the butadiene polymer can be prevented from continuing to be generated near the detection lead, thereby preventing the accumulation of the butadiene polymer.

[0033] In some technical solutions, the third containing chamber is capable of containing a liquid containing an inhibitor.

[0034] In this technical solution, the liquid in the third accommodating chamber contains a polymerization inhibitor, which can prevent butadiene from undergoing a polymerization reaction, thereby preventing the generation of butadiene polymers. The liquid containing the polymerization inhibitor is discharged toward the detection lead through the second drainage tube, which can, on the one hand, flush the butadiene polymer near the detection lead to clean off part of the butadiene polymer near the detection lead, and on the other hand, the polymerization inhibitor contained in the liquid can prevent the polymerization reaction of butadiene and prevent the generation of butadiene polymers.

[0035] In some technical solutions, the distillation tower further includes: a detection groove, which is arranged on the inner wall of the fourth accommodating chamber, and the detection lead extends into the detection groove.

[0036] In this technical solution, a detection groove is further provided on the inner wall of the fourth accommodating cavity, and the detection lead of the detection device extends into the detection groove, thereby preventing the detection lead from protruding from the inner wall of the fourth accommodating cavity, thereby providing a certain degree of protection for the detection lead.

[0037] In some technical solutions, one end of the second drainage tube extends into the detection tank.

[0038] In this technical solution, the positional relationship between the second drainage tube and the detection tank is defined. Specifically, one end of the second drainage tube extends into the detection tank. Since the detection tank is recessed in the inner wall of the cylinder, butadiene is more likely to undergo polymerization reaction in the detection tank to form butadiene polymer. Therefore, the butadiene polymer in the detection tank needs to be removed by the second drainage tube. By extending one end of the second drainage tube into the detection tank, the liquid discharged by the second drainage tube can be more fully in contact with the inner wall of the detection tank, further improving the flushing effect of the second drainage tube on the detection tank, so that more butadiene polymer in the detection tank can fall off from the wall of the detection tank under the flushing of the liquid discharged by the second drainage tube.

[0039] In some technical solutions, there is a distance between the second drainage tube and the wall surface of the detection groove.

[0040] In this technical solution, the positional relationship between the second drainage tube and the detection tank is further defined. Specifically, there is a gap between the second drainage tube and the wall of the detection tank. Understandably, if the second drainage tube is attached to the inner wall of the detection tank, the second drainage tube will block the butadiene polymer, which will weaken the flushing effect of the liquid flow on the butadiene polymer. In order to avoid this problem, the present application provides a certain gap between the second drainage tube and the inner wall of the detection tank, so that the liquid flow can fully contact the butadiene polymer and improve the flushing effect.

[0041] In some technical solutions, the second drainage tube is a flexible tube.

[0042] In this technical solution, the second drainage tube is configured as a flexible tube to avoid interference between the second drainage tube and other components or pipelines in the cylinder, so as to facilitate the arrangement of the second drainage tube.

[0043] In some technical solutions, the distillation tower further includes: at least one second tower plate, any second tower plate is arranged in the corresponding cylinder, and the second tower plate divides the corresponding cylinder into a third accommodating chamber and a fourth accommodating chamber.

[0044] In the technical solution, the structure of the distillation tower is further defined. The distillation tower also includes at least one second tower plate, the second tower plate is arranged in a one-to-one correspondence with the cylinder provided with the detection slot, the second tower plate is arranged in the corresponding cylinder, and by arranging the second tower plate in the cylinder, the corresponding cylinder can be divided into a third accommodating chamber and a fourth accommodating chamber by the second tower plate.

[0045] In some technical solutions, the second tray is provided with through holes.

[0046] In this technical solution, the second tray is defined, specifically, the second tray is provided with a through hole. By providing the through hole on the second tray, part of the pipeline can pass through the second tray through the through hole to avoid interference between the second tray and the pipeline in the distillation tower.

[0047] In some technical solutions, a plurality of cylinders are arranged in sequence along the height direction of the distillation tower.

[0048] In this technical solution, a plurality of cylinders are defined. Specifically, the plurality of cylinders are arranged in sequence along the height direction of the distillation tower, so that the plurality of cylinders can constitute the main body of the distillation tower.

[0049] The technical solution provided by the present invention brings at least the following beneficial effects: by dividing the cylinder where the manhole is located into a first accommodating chamber and a second accommodating chamber, and providing a first drainage tube extending from the first accommodating chamber to the manhole, the liquid in the first accommodating chamber can be led to the manhole through the first drainage tube to flush the vicinity of the manhole. Since the first accommodating chamber is located above the second accommodating chamber, the liquid in the first drainage tube can be sprayed toward the vicinity of the manhole at a higher flow rate under the pressure of the liquid in the first accommodating chamber, thereby improving the flushing effect. Thus, part of the butadiene polymer near the manhole can be cleaned, and the butadiene polymer can be prevented from continuing to be generated near the manhole, thereby preventing the accumulation of butadiene polymer. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0051] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0052] Figure 1 A schematic diagram of the structure of a distillation tower provided in an embodiment of the present invention; Figure 2One of the schematic diagrams of the flow path of liquid in a distillation tower provided in an embodiment of the present invention; Figure 3 The present invention provides a second schematic diagram of the flow path of liquid in a distillation tower according to an embodiment of the present invention.

[0053] in, Figure 1 The corresponding relationship between the reference numerals and the component names is as follows: 100 is a distillation tower, 110 is a main body, 111 is a cylinder, 112 is a manhole, 113 is a first accommodating chamber, 114 is a second accommodating chamber, 115 is a third accommodating chamber, 116 is a fourth accommodating chamber, 117 is a detection tank, 120 is a first drainage pipe, 130 is a first tower plate, 140 is a detection device, 141 is a detection lead, 150 is a second drainage pipe, and 160 is a second tower plate. DETAILED DESCRIPTION

[0054] The present invention is not limited by the following embodiments, and specific implementation methods can be determined based on the technical solution of the present invention and actual conditions.

[0055] In the present invention, for the convenience of description, the relative position relationship of each component is described according to the attached Figure 1 The layout is described in detail, such as the positional relationship of front, back, top, bottom, left, right, etc., which is based on the attached manual. Figure 1 The layout direction is determined by the

[0056] In order to make the purpose, embodiments and advantages of the embodiments of the present invention clearer, the embodiments of the embodiments of the present invention will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0057] like Figure 1 As shown, the present invention provides a distillation tower 100, comprising: a main body 110, comprising a plurality of cylinders 111, the inner wall of at least one cylinder 111 of the plurality of cylinders 111 is provided with a manhole 112; the cylinder 111 provided with the manhole 112 comprises a first accommodating chamber 113 and a second accommodating chamber 114, the first accommodating chamber 113 is close to the top of the distillation tower 100, the second accommodating chamber 114 is close to the bottom of the distillation tower 100, the first accommodating chamber 113 can accommodate liquid, and the manhole 112 is provided on the inner wall of the second accommodating chamber 114; at least one first drainage pipe 120, one end of the first drainage pipe 120 is connected to the first accommodating chamber 113 of the cylinder 111 where the corresponding manhole 112 is located, and extends in a direction toward the manhole 112, and the first drainage pipe 120 is used to guide the liquid in the corresponding first accommodating chamber 113 to the manhole 112.

[0058] The distillation tower 100 proposed in the present application includes a main body 110, and the main body 110 includes a plurality of barrels 111, and the plurality of barrels 111 are connected in turn along the height direction of the distillation tower 100. At least one barrel 111 of the plurality of barrels 111 is provided with a manhole 112, and the manhole 112 is arranged on the inner wall of the barrel 111. It can be understood that during the operation of the distillation tower 100, there is a large amount of gas-phase butadiene in the distillation tower 100, and the gas-phase butadiene stays in the distillation tower 100 for a long time, so it is easy to produce butadiene polymer in the corner area. Since butadiene has self-polymerization, this will aggravate the polymerization of butadiene polymer in the corner. After the butadiene polymer reaches a certain amount, the butadiene polymer falls off from the corner, and the butadiene polymer that falls off is easy to cause blockage or damage to the pipeline and other components in the distillation tower 100, thereby affecting the operation of the distillation tower 100. The manhole 112 is a relatively large dead corner in the distillation tower 100. If the area around the manhole 112 is not treated, a large amount of butadiene polymer will be generated around the manhole 112. In order to prevent the butadiene polymer from accumulating in large quantities around the manhole 112, the present application provides a structure for cleaning the butadiene polymer in the cylinder 111 provided with the manhole 112.

[0059] Further, the barrel 111 provided with the manhole 112 includes a first accommodating chamber 113 and a second accommodating chamber 114, the first accommodating chamber 113 is close to the top of the distillation tower 100, and the second accommodating chamber 114 is close to the bottom of the distillation tower 100, that is, the first accommodating chamber 113 is located above the second accommodating chamber 114. The first accommodating chamber 113 can accommodate liquid, and the manhole 112 is arranged on the inner wall of the second accommodating chamber 114. The distillation tower 100 also includes at least one first drainage pipe 120, the first drainage pipe 120 is arranged in a one-to-one correspondence with the manhole 112, one end of the first drainage pipe 120 is connected to the first accommodating chamber 113 of the barrel 111 where the corresponding manhole 112 is located, and the liquid in the first accommodating chamber 113 can flow into the first drainage pipe 120. The first drainage tube 120 extends in the direction toward the manhole 112. Since the manhole 112 is arranged on the inner wall of the second accommodating chamber 114 located below the first accommodating chamber 113, the liquid in the first drainage tube 120 can flow to the manhole 112 under the hydraulic pressure of the liquid in the first accommodating chamber 113. In this way, the manhole 112 and its surroundings can be cleaned by the first drainage tube 120, so that part of the butadiene polymer near the manhole 112 can be cleaned, and the butadiene polymer can be prevented from continuing to be generated near the manhole 112, thereby preventing the accumulation of butadiene polymer. The specific flow path of the liquid is as follows: Figure 2 shown.

[0060] By dividing the barrel 111 where the manhole 112 is located into a first accommodating chamber 113 and a second accommodating chamber 114, and providing a first drainage pipe 120 extending from the first accommodating chamber 113 to the manhole 112, the liquid in the first accommodating chamber 113 can be guided to the manhole 112 through the first drainage pipe 120 to flush the vicinity of the manhole 112. Since the first accommodating chamber 113 is located above the second accommodating chamber 114, the liquid in the first drainage pipe 120 can be sprayed toward the vicinity of the manhole 112 at a higher flow rate under the pressure of the liquid in the first accommodating chamber 113, thereby improving the flushing effect. In this way, part of the butadiene polymer near the manhole 112 can be cleaned, and the butadiene polymer can be prevented from continuing to be generated near the manhole 112, thereby preventing the accumulation of the butadiene polymer.

[0061] In some embodiments, the first receiving chamber 113 can receive a liquid containing a polymerization inhibitor.

[0062] In this embodiment, the liquid in the first accommodating chamber 113 contains a polymerization inhibitor, which can prevent butadiene from undergoing a polymerization reaction, thereby preventing the generation of butadiene polymers. The liquid containing the polymerization inhibitor is discharged to the manhole 112 through the first drainage pipe 120, which can, on the one hand, flush the butadiene polymer near the manhole 112 to clean off part of the butadiene polymer near the manhole 112, and on the other hand, the polymerization inhibitor contained in the liquid can prevent the polymerization reaction of butadiene and prevent the generation of butadiene polymers.

[0063] like Figure 1 As shown, in some embodiments, one end of the first drainage tube 120 extends into the manhole 112 .

[0064] In this embodiment, the positional relationship between the first drainage pipe 120 and the manhole 112 is defined, specifically, one end of the first drainage pipe 120 extends into the manhole 112. In this way, the liquid discharged from the first drainage pipe 120 can more fully contact the inner wall of the manhole 112, further improving the flushing effect of the first drainage pipe 120 on the manhole 112, so that more butadiene polymer in the manhole 112 can fall off from the wall of the manhole 112 under the flushing of the liquid discharged from the first drainage pipe 120.

[0065] In some embodiments, one end of the first drainage pipe 120 extending into the manhole 112 is close to the top wall of the manhole 112 .

[0066] In this embodiment, the positional relationship between the first drainage tube 120 and the manhole 112 is further defined. Specifically, one end of the first drainage tube 120 extending into the manhole 112 is close to the top wall of the manhole 112. It can be understood that compared with the butadiene polymer polymerized on the bottom wall of the manhole 112, the butadiene polymer polymerized on the top wall of the manhole 112 is more likely to fall off under the action of gravity, and therefore, the butadiene polymer polymerized on the top wall of the manhole 112 is more harmful. By making one end of the first drainage tube 120 extending into the manhole 112 close to the top wall of the manhole 112, the butadiene polymer polymerized on the top wall of the manhole 112 can be preferentially removed through the first drainage tube 120, so as to reduce the damage to the pipeline inside the cylinder 111 caused by the falling of the butadiene polymer.

[0067] In some embodiments, the first drainage pipe 120 is spaced apart from the inner wall of the manhole 112 .

[0068] In this embodiment, the positional relationship between the first drainage tube 120 and the manhole 112 is further defined. Specifically, there is a spacing between the first drainage tube 120 and the inner wall of the manhole 112. Understandably, if the first drainage tube 120 is attached to the inner wall of the manhole 112, the first drainage tube 120 will block the butadiene polymer, which will weaken the flushing effect of the liquid flow on the butadiene polymer. In order to avoid this problem, the present application provides a certain spacing between the first drainage tube 120 and the inner wall of the manhole 112, so that the liquid flow can fully contact the butadiene polymer and improve the flushing effect.

[0069] In some embodiments, the first drainage tube 120 is a flexible tube.

[0070] In this embodiment, the first drainage tube 120 is configured as a flexible tube to avoid interference between the first drainage tube 120 and other components or pipelines in the barrel 111 , so as to facilitate the arrangement of the first drainage tube 120 .

[0071] like Figure 1 As shown, in some embodiments, the distillation tower 100 further includes: at least one first tray 130 , any first tray 130 is disposed in the corresponding cylinder 111 , and the first tray 130 separates the corresponding cylinder 111 into a first accommodating chamber 113 and a second accommodating chamber 114 .

[0072] In this embodiment, the structure of the distillation tower 100 is further defined. The distillation tower 100 further includes at least one first tray 130, which is arranged in one-to-one correspondence with the barrel 111 provided with the manhole 112, and the first tray 130 is arranged in the corresponding barrel 111. By arranging the first tray 130 in the barrel 111, the corresponding barrel 111 can be separated into a first accommodating chamber 113 and a second accommodating chamber 114 by the first tray 130.

[0073] In some embodiments, the first tray 130 is provided with through holes.

[0074] In this embodiment, the first tray 130 is defined, specifically, the first tray 130 is provided with a through hole. By providing the through hole on the first tray 130, part of the pipeline can pass through the first tray 130 through the through hole, so as to avoid interference between the first tray 130 and the pipeline in the distillation tower 100.

[0075] In some embodiments, when there are multiple manholes 112 , the multiple manholes 112 are sequentially arranged along the height direction of the distillation tower 100 .

[0076] In this embodiment, the manhole 112 is limited. Specifically, when the number of the manholes 112 is multiple, the multiple manholes 112 are sequentially arranged along the height direction of the distillation tower 100. The number of the manholes 112 may be 2 or 3, and the multiple manholes 112 are sequentially arranged along the height direction of the distillation tower 100. In addition, the number of the manholes 112 does not exceed 3. If the number of the manholes 112 is too large, a large amount of butadiene polymer will be accumulated, which may easily damage the pipeline in the distillation tower 100.

[0077] like Figure 1 As shown, in some embodiments, the distillation tower 100 further includes: at least one detection device 140 , which is disposed on a wall surface of at least one cylinder 111 among the plurality of cylinders 111 , and is used to detect parameters within the cylinder 111 .

[0078] In this embodiment, the structure of the distillation tower 100 is further defined. The distillation tower 100 further includes at least one detection device 140, which is disposed on the wall of at least one cylinder 111 among the multiple cylinders 111. The detection device 140 can detect parameters in the cylinder 111 to ensure that the distillation tower 100 can operate normally. The detection device 140 can be a liquid level gauge, which can detect the liquid level height in the cylinder 111.

[0079] like Figure 1 As shown, in some embodiments, the detection device 140 has a detection lead 141 , and the detection lead 141 extends into the corresponding cylinder 111 .

[0080] In this embodiment, the detection device 140 is defined. In order to facilitate the detection device 140 to detect the parameters in the cylinder 111, a detection lead 141 is also provided in the detection device 140, and the detection lead 141 extends into the corresponding cylinder 111 to detect the parameters in the cylinder 111. By providing the detection lead 141 in the detection device 140, the detection accuracy of the detection device 140 can be improved.

[0081] like Figure 1 As shown, in some embodiments, the cylinder 111 provided with the detection device 140 includes a third accommodating chamber 115 and a fourth accommodating chamber 116, the third accommodating chamber 115 is close to the top of the distillation tower 100, and the fourth accommodating chamber 116 is close to the bottom of the distillation tower 100, the third accommodating chamber 115 can accommodate liquid, and the detection lead 141 extends into the corresponding fourth accommodating chamber 116; at least one second drainage tube 150, one end of the second drainage tube 150 is connected to the corresponding third accommodating chamber 115, and extends in a direction toward the corresponding detection lead 141, and the second drainage tube 150 is used to guide the liquid in the third accommodating chamber 115 to the detection lead 141.

[0082] In this embodiment, since the detection lead 141 of the detection device 140 extends into the barrel 111, some dead angle areas are formed near the detection lead 141. In order to prevent butadiene from forming polymers in the dead angle areas near the detection lead 141, the present application sets a structure for cleaning butadiene polymers in the barrel 111 provided with the detection device 140. The barrel 111 provided with the detection device 140 includes a third accommodating chamber 115 and a fourth accommodating chamber 116. The third accommodating chamber 115 is close to the top of the distillation tower 100, and the fourth accommodating chamber 116 is close to the bottom of the distillation tower 100, that is, the third accommodating chamber 115 is located above the fourth accommodating chamber 116. The third accommodating chamber 115 can accommodate liquid, and the detection lead 141 extends into the fourth accommodating chamber 116. The distillation tower 100 also includes at least one second drainage tube 150, and the second drainage tube 150 is arranged in a one-to-one correspondence with the detection device 140. One end of the second drainage tube 150 is connected to the third accommodating chamber 115 of the cylinder 111 where the corresponding detection device 140 is located, and the liquid in the third accommodating chamber 115 can flow into the second drainage tube 150. The second drainage tube 150 extends in the direction toward the detection lead 141. Since the detection lead 141 extends into the fourth accommodating chamber 116 located below the third accommodating chamber 115, the liquid in the second drainage tube 150 can flow toward the detection lead 141 under the hydraulic pressure of the liquid in the third accommodating chamber 115. In this way, the detection lead 141 and its surroundings can be cleaned by the second drainage tube 150, so that part of the butadiene polymer near the detection lead 141 can be cleaned, and the butadiene polymer can be prevented from continuing to be generated near the detection lead 141, thereby preventing the accumulation of butadiene polymer. The flow path of the liquid is as follows: Figure 3 shown.

[0083] By dividing the barrel 111 where the detection device 140 is located into a third accommodating chamber 115 and a fourth accommodating chamber 116, and providing a second drainage tube 150 extending from the third accommodating chamber 115 to the detection lead 141, the liquid in the third accommodating chamber 115 can be guided to the detection lead 141 through the second drainage tube 150 to flush the dead corner near the detection lead 141. Since the third accommodating chamber 115 is located above the fourth accommodating chamber 116, the liquid in the second drainage tube 150 can be sprayed at a higher flow rate to the vicinity of the detection lead 141 under the pressure of the liquid in the third accommodating chamber 115, thereby improving the flushing effect. In this way, part of the butadiene polymer near the detection lead 141 can be cleaned, and the butadiene polymer can be prevented from continuing to be generated near the detection lead 141, thereby preventing the accumulation of the butadiene polymer.

[0084] In some embodiments, the third receiving chamber 115 can receive a liquid containing a polymerization inhibitor.

[0085] In this embodiment, the liquid in the third accommodating chamber 115 contains a polymerization inhibitor, which can prevent butadiene from undergoing a polymerization reaction, thereby preventing the generation of butadiene polymers. The liquid containing the polymerization inhibitor is discharged toward the detection lead 141 through the second drainage pipe 150, which can, on the one hand, flush the butadiene polymer near the detection lead 141 to clean off part of the butadiene polymer near the detection lead 141, and on the other hand, the polymerization inhibitor contained in the liquid can prevent the polymerization reaction of butadiene and prevent the generation of butadiene polymers.

[0086] like Figure 1 As shown, in some embodiments, the distillation tower 100 further includes: a detection groove 117 disposed on the inner wall of the fourth accommodating chamber 116 , and the detection lead 141 extends into the detection groove 117 .

[0087] In this embodiment, a detection groove 117 is further provided on the inner wall of the fourth accommodating cavity 116, and the detection lead 141 of the detection device 140 extends into the detection groove 117, thereby preventing the detection lead 141 from protruding from the inner wall of the fourth accommodating cavity 116, thereby providing a certain degree of protection for the detection lead 141.

[0088] like Figure 1 As shown, in some embodiments, one end of the second drainage tube 150 extends into the detection groove 117.

[0089] In this embodiment, the positional relationship between the second drainage tube 150 and the detection tank 117 is defined. Specifically, one end of the second drainage tube 150 extends into the detection tank 117. Since the detection tank 117 is recessed in the inner wall of the cylinder 111, butadiene is more likely to undergo polymerization reaction in the detection tank 117 to form butadiene polymer. Therefore, the butadiene polymer in the detection tank 117 needs to be removed by the second drainage tube 150. By extending one end of the second drainage tube 150 into the detection tank 117, the liquid discharged by the second drainage tube 150 can be more fully in contact with the inner wall of the detection tank 117, further improving the flushing effect of the second drainage tube 150 on the detection tank 117, so that more butadiene polymer in the detection tank 117 can fall off from the wall surface of the detection tank 117 under the flushing of the liquid discharged by the second drainage tube 150.

[0090] like Figure 1 As shown, in some embodiments, there is a distance between the second drainage tube 150 and the wall of the detection groove 117 .

[0091] In this embodiment, the positional relationship between the second drainage tube 150 and the detection tank 117 is further defined. Specifically, there is a gap between the second drainage tube 150 and the wall of the detection tank 117. Understandably, if the second drainage tube 150 is attached to the inner wall of the detection tank 117, the second drainage tube 150 will block the butadiene polymer, which will weaken the flushing effect of the liquid flow on the butadiene polymer. In order to avoid this problem, the present application provides a certain gap between the second drainage tube 150 and the inner wall of the detection tank 117, so that the liquid flow can fully contact the butadiene polymer and improve the flushing effect.

[0092] In some embodiments, the second drainage tube 150 is a flexible tube.

[0093] In this embodiment, the second drainage tube 150 is configured as a flexible tube to avoid interference between the second drainage tube 150 and other components or pipelines in the barrel 111 , so as to facilitate the arrangement of the second drainage tube 150 .

[0094] like Figure 1 As shown, in some embodiments, the distillation tower 100 further includes: at least one second tray 160 , any second tray 160 is disposed in the corresponding cylinder 111 , and the second tray 160 separates the corresponding cylinder 111 into a third accommodating chamber 115 and a fourth accommodating chamber 116 .

[0095] In this embodiment, the structure of the distillation tower 100 is further defined. The distillation tower 100 further includes at least one second tray 160, and the second tray 160 is arranged in a one-to-one correspondence with the cylinder 111 provided with the detection slot 117, and the second tray 160 is arranged in the corresponding cylinder 111. By arranging the second tray 160 in the cylinder 111, the corresponding cylinder 111 can be separated into a third accommodating chamber 115 and a fourth accommodating chamber 116 by the second tray 160.

[0096] In some embodiments, second tray 160 is provided with through holes.

[0097] In this embodiment, the second tray 160 is defined, specifically, the second tray 160 is provided with a through hole. By providing the through hole on the second tray 160, part of the pipeline can pass through the second tray 160 through the through hole to avoid interference between the second tray 160 and the pipeline in the distillation tower 100.

[0098] In some embodiments, a plurality of cylinders 111 are sequentially arranged along the height direction of the distillation tower 100 .

[0099] In this embodiment, a plurality of cylinders 111 are defined. Specifically, the plurality of cylinders 111 are sequentially arranged along the height direction of the distillation tower 100, so that the plurality of cylinders 111 can constitute the main body 110 of the distillation tower 100.

[0100] It should be noted that, in this article, 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 such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0101] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A butadiene distillation tower, Features include: The main body comprises a plurality of cylinders, the plurality of cylinders are sequentially arranged along the height direction of the distillation tower, and the inner wall of at least one of the plurality of cylinders is provided with a manhole; the cylinder provided with the manhole comprises a first accommodating cavity and a second accommodating cavity, the first accommodating cavity is close to the top of the distillation tower, the second accommodating cavity is close to the bottom of the distillation tower, the first accommodating cavity can accommodate liquid, and the manhole is provided at the inner wall of the cylinder corresponding to the second accommodating cavity; At least one first drainage tube, one end of which is connected to the first accommodating cavity of the cylinder where the corresponding manhole is located, and extends in the direction toward the manhole, and the first drainage tube is used to guide the liquid in the corresponding first accommodating cavity to the manhole.

2. The butadiene device distillation tower according to claim 1, Features The first containing chamber can contain a liquid containing a polymerization inhibitor.

3. The butadiene device distillation tower according to claim 1 or 2, Features One end of the first drainage pipe extends into the manhole.

4. The butadiene device distillation tower according to claim 3, Features One end of the first drainage pipe extending into the manhole is close to the top wall of the manhole.

5. The butadiene device distillation tower according to claim 4, Features There is a distance between the first drainage pipe and the inner wall of the manhole.

6. The butadiene device distillation tower according to claim 1 or 2 or 4 or 5, Features The first drainage tube is a flexible tube.

7. The butadiene device distillation tower according to claim 6, Features Also includes: At least one first tower plate, any of the first tower plates is arranged in the corresponding cylinder, and the first tower plate divides the corresponding cylinder into the first accommodating chamber and the second accommodating chamber.

8. The butadiene device distillation tower according to claim 7, Features The first tray is provided with through holes.

9. The butadiene device distillation tower according to claim 1 or 2 or 4 or 5 or 7, Features In the case where there are multiple manholes, the multiple manholes are sequentially arranged along the height direction of the distillation tower.

10. The butadiene device distillation tower according to claim 1 or 2 or 4 or 5 or 7 or 8, Features Also includes: At least one detection device is provided on the wall surface of at least one cylinder among the plurality of cylinders, and the detection device is used to detect parameters in the cylinder.

11. The distillation tower according to claim 10, It is characterized in that The detection device has a detection lead, and the detection lead extends into the corresponding cylinder.

12. The distillation tower according to claim 11, It is characterized in that The cylinder provided with the detection device comprises a third accommodating chamber and a fourth accommodating chamber, wherein the third accommodating chamber is close to the top of the distillation tower, and the fourth accommodating chamber is close to the bottom of the distillation tower, and the third accommodating chamber can accommodate liquid, and the detection lead extends into the corresponding fourth accommodating chamber; At least one second drainage tube, one end of which is communicated with the corresponding third accommodating cavity and extends in a direction toward the corresponding detection lead, and the second drainage tube is used to guide the liquid in the third accommodating cavity to the detection lead.

13. The distillation tower according to claim 12, It is characterized in that The third containing chamber can contain a liquid containing a polymerization inhibitor.

14. The distillation tower according to claim 12 or 13, It is characterized in that Also includes: The detection groove is arranged on the inner wall of the fourth accommodating cavity, and the detection lead extends into the detection groove.

15. The distillation column according to claim 14, It is characterized in that One end of the second drainage tube extends into the detection groove.

16. The distillation column according to claim 15, It is characterized in that There is a distance between the second drainage tube and the wall surface of the detection groove.

17. The distillation tower according to claim 12, 13, 15 or 16, It is characterized in that The second drainage tube is a flexible tube.

18. The distillation tower according to claim 12, 13, 15 or 16, It is characterized in that Also includes: At least one second tower plate, any of the second tower plates is arranged in the corresponding cylinder, and the second tower plate divides the corresponding cylinder into the third accommodating chamber and the fourth accommodating chamber.

19. The distillation column according to claim 18, It is characterized in that The second tray is provided with through holes.

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