CN113813632A

CN113813632A - Aromatic mixing and wall-dividing rectifying tower for petroleum benzene production

Info

Publication number: CN113813632A
Application number: CN202111389547.1A
Authority: CN
Inventors: 王震; 牛洪良; 刘春堂; 王燕燕; 武海剑; 郑同昌
Original assignee: Dongying Weilian Chemical Co ltd
Current assignee: Dongying Weilian Chemical Co ltd
Priority date: 2021-11-23
Filing date: 2021-11-23
Publication date: 2021-12-21
Anticipated expiration: 2041-11-23
Also published as: CN113813632B

Abstract

The invention discloses a mixed aromatic bulkhead rectifying tower for producing petroleum benzene, which belongs to the technical field of petroleum benzene production and comprises a rectifying tower body, wherein a steam inlet pipe is inserted on the rectifying tower body, and a feeding pipe is arranged above the steam inlet pipe; the leakage-proof assembly comprises a sleeve fixedly sleeved outside the steam inlet pipe, and a distance is reserved between the inner wall of the sleeve and the outer wall of the steam inlet pipe; according to the steam leakage prevention device, the sleeve and the separation sleeve are arranged to timely treat steam leakage, when a gap appears at the connecting end of the steam inlet pipe to cause the steam leakage, the pushing support rod is driven to slide out along the guide pipe, the separation sleeve is pushed towards the inner cavity of the sleeve, and the gap of the steam inlet pipe is timely blocked by the separation sleeve.

Description

Aromatic mixing and wall-dividing rectifying tower for petroleum benzene production

Technical Field

The invention relates to the technical field of petroleum benzene production, in particular to a mixed aromatic bulkhead rectifying tower for petroleum benzene production.

Background

The petroleum benzene series is colorless, transparent, volatile and nonpolar liquid, has high refractivity and strong mango fragrance, and is flammable and toxic. The density is 0.879, the molecular formula is C6H6, the molecular weight is 78.11, the freezing point is more than or equal to 5.40 ℃, the boiling point is 80.1 ℃, and the water-insoluble organic solvent is soluble in ethanol, ether, acetone, carbon tetrachloride, carbon disulfide and other organic solvents. When burning, it emits bright and smoky flame. The steam and air form an explosive mixture, and the explosion limit is 1.5-8%. Benzene is an important raw material for synthetic rubber, synthetic resin, synthetic fiber, synthetic drugs and pesticides, and can also be used as power fuel, paint, solvent for rubber, and the like.

Rectifying column in the use, often let in the rectifying column with high-temperature steam in, but the pipeline that is used for business turn over high-temperature steam is the beading on the rectifying column, the welding easily receives the difference in temperature influence impaired at the high-temperature steam business turn over pipe of rectifying column, and the crack appears under the condition of frequent expend with heat and contract with cold promptly, it is not enough to connect the reliability, it is difficult in time to discover when steam sees through the crack and reveals, and can not in time make suitable reaction measure, for this reason, we propose a petroleum benzene production with mixing fragrant branch wall rectifying column.

Disclosure of Invention

The invention aims to provide a mixed aromatic wall rectifying tower for producing petroleum benzene, which aims to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a mixed aromatic dividing wall rectifying tower for producing petroleum benzene, which comprises,

the device comprises a rectifying tower body, wherein a steam inlet pipe is inserted into the rectifying tower body, a feed pipe is arranged above the steam inlet pipe, a discharge pipe is inserted into the surface of the rectifying tower body opposite to the feed pipe, and a steam outlet pipe is inserted into the top of the rectifying tower body;

the leak protection subassembly is located the outside sleeve pipe of steam induction pipe including fixed cover, one section distance in interval between inside pipe wall and the steam induction pipe outer wall, just one side of steam induction pipe and rectifying column body link is located to the sleeve pipe cover.

Furthermore, the outside activity cover of steam induction pipe is equipped with the separation cover, separation cover outer wall and intraductal wall sliding connection of cover, the sleeve pipe tip is equipped with the sealing washer, the length of separation cover is the same with sheathed tube length, just the internal diameter of separation cover equals the external diameter of steam induction pipe.

Furthermore, a pushing support rod is fixedly inserted into the end of the blocking sleeve, a guide pipe is arranged on one side of the pushing support rod, the pushing support rod is movably inserted into the guide pipe, an integrally formed convex disc is arranged on the pushing support rod, a return spring connected with the convex disc is arranged in the guide pipe, and the tail end of the guide pipe is fixedly connected with a flange plate at the inlet end of the steam leading-in pipe.

Furthermore, the end part of the guide pipe is provided with a limiting block, the limiting block is pressed on the convex disc, the reset spring is in a compression state, the limiting block is fixedly inserted with a U-shaped supporting rod, the surface of the guide cylinder is fixedly provided with a vertical guide rail, one end of the U-shaped supporting rod is movably inserted in the bent guide pipe, the U-shaped supporting rod is movably inserted on the vertical guide rail, and the bottom end of the vertical guide rail is fixedly connected with the surface of the guide pipe.

Further, the sleeve pipe surface is equipped with the test tube, the bending catheter tip is connected with the test tube, the test tube runs through the sleeve pipe and stretches into its inner chamber and with the sleeve pipe and the steam induction pipe between the space intercommunication, just the activity is pegged graft on the test tube and is had unsteady measuring stick, the fixed installing support that is equipped with in test tube top, the installing support bottom surface is equipped with and floats the sensor that the measuring stick is located same straight line, be equipped with the controller on the installing support, the output and the controller electric connection of sensor.

Furthermore, the end part, far away from the sleeve, of the blocking sleeve is provided with a blocking ring, the surface of the blocking ring is provided with an integrally formed convex ring, the surface, facing the blocking ring, of the sealing ring is provided with an annular groove, and the blocking ring is tightly connected with the sealing ring after moving.

Compared with the prior art, the invention has the beneficial effects that: according to the steam leakage detection device, the sleeve and the blocking sleeve are arranged to timely treat steam leakage, when steam leakage is caused by a gap at the connecting end of the steam inlet pipe, the steam enters the detection pipe and flows into the bent guide pipe to push gas in the bent guide pipe to flow, the U-shaped support rod is pushed outwards to enable the U-shaped support rod to move upwards, the limiting block is synchronously driven to slide along the end face of the guide pipe until the limiting block is separated from the convex disc, the reset spring recovers deformation, the pushing support rod is driven to slide outwards along the guide pipe to push the blocking sleeve towards the inner cavity of the sleeve, the blocking sleeve enables the gap of the steam inlet pipe to be blocked timely, further leakage of the steam is avoided, in the early stage of leakage, the steam entering the detection pipe pushes the floating detection rod to move upwards and contact with the sensor, and an alarm signal is triggered and fed back to a worker.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a leak-proof assembly according to the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 2 according to the present invention.

In the figure: 100. a rectifying column body; 101. a steam introduction pipe; 102. a feed pipe; 103. a discharge pipe; 104. a vapor delivery pipe; 200. a leak-proof assembly; 201. a sleeve; 202. a seal ring; 203. a barrier sleeve; 204. pushing the supporting rod; 205. a guide tube; 207. a limiting block; 208. a U-shaped strut; 209. a vertical guide rail; 210. a curved conduit; 211. a detection tube; 212. mounting a bracket; 213. a floating detection rod; 214. a controller; 215. a convex disc; 216. a return spring; 217. a check ring; 218. a convex ring.

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, the present invention provides a mixed aromatic bulkhead rectifying tower for producing petroleum benzene, which comprises a rectifying tower body 100, a steam inlet pipe 101 is inserted into the rectifying tower body 100, a feed pipe 102 is arranged above the steam inlet pipe 101, a discharge pipe 103 is inserted into the surface of the rectifying tower body 100 opposite to the feed pipe 102, and a steam outlet pipe 104 is inserted into the top of the rectifying tower body 100; the leakage-proof assembly 200 comprises a sleeve 201 fixedly sleeved outside the steam inlet pipe 101, a distance is arranged between the inner wall of the sleeve 201 and the outer wall of the steam inlet pipe 101, and the sleeve 201 is sleeved on one side of the connecting end of the steam inlet pipe 101 and the rectifying tower body 100.

Referring to fig. 2 and fig. 3, a blocking sleeve 203 is movably sleeved outside the steam inlet pipe 101, an outer wall of the blocking sleeve 203 is slidably connected with an inner wall of the sleeve 201, a sealing ring 202 is disposed at an end portion of the sleeve 201, the length of the blocking sleeve 203 is the same as that of the sleeve 201, one end of the U-shaped strut 208 is movably inserted into the bent conduit 210, when steam leaks due to a gap at a connection end of the steam inlet pipe 101, the steam enters the detection pipe 211 and flows into the bent conduit 210 to push the gas in the detection pipe to flow, the U-shaped strut 208 is pushed outwards, the U-shaped strut 208 moves upwards to synchronously drive the limiting block 207 to slide along an end surface of the guide pipe 205 until the limiting block is separated from the convex disc 215, the return spring 216 restores deformation to drive the pushing strut 204 to slide outwards along the guide pipe 205, the blocking sleeve 203 is pushed towards an inner cavity of the sleeve 201, and the blocking sleeve 203 blocks the gap of the steam inlet pipe 101 in time, further leakage of steam is avoided and the inner diameter of the blocking sleeve 203 is equal to the outer diameter of the steam introduction pipe 101.

A pushing support rod 204 is fixedly inserted at the end of the blocking sleeve 203, a guide pipe 205 is arranged at one side of the pushing support rod 204, the pushing support rod 204 is movably inserted in the guide pipe 205, and an integrally formed convex disc 215 is arranged on the pushing support rod 204, so that by utilizing the property that each component in the mixture has different volatility, namely the vapor pressure of each component is different at the same temperature, the light component (low-boiling-point substance) in the liquid phase is transferred into the gas phase, and the heavy component (high-boiling-point substance) in the gas phase is transferred into the liquid phase, thereby realizing the purpose of separation, further, when in production, steam is introduced into the rectifying tower through the steam introduction pipe, when steam leakage occurs due to a gap at the connecting end of the steam introduction pipe 101, the steam enters the detection pipe 211 and flows into the bent guide pipe 210 to push the gas in the bent guide pipe to flow, the U-shaped support rod 208 is pushed outwards, so that the U-shaped support rod 208 moves upwards, and the limiting block 207 is synchronously driven to slide along the end face of the guide pipe 205, until the steam guide pipe is separated from the convex disc 215, the return spring 216 is deformed again, the return spring 216 (not shown) connected with the convex disc 215 is arranged in the guide pipe 205, and the tail end of the guide pipe 205 is fixedly connected with the flange plate at the inlet end of the steam guide pipe 101.

The end part of the guide pipe 205 is provided with a limit block 207, the limit block 207 is pressed on the convex disc, the reset spring 216 is in a compressed state, the limit block 207 is fixedly inserted with a U-shaped support rod 208, the surface of the guide pipe 205 is fixedly provided with a vertical guide rail 209, one end of the U-shaped support rod 208 is movably inserted in the bent guide pipe 210, the reset spring 216 restores deformation to drive the pushing support rod 204 to slide out along the guide pipe 205 so as to push the blocking sleeve 203 to the inner cavity of the sleeve 201, so that the blocking sleeve 203 blocks the gap of the steam inlet pipe 101 in time, the pushed blocking sleeve 203 is tightly contacted with the outer surface of the steam inlet pipe and the outer wall of the sleeve 201, the three parts form a tightly jointed structure, the gap on the surface of the steam inlet pipe 101 is sealed, further leakage of steam is avoided, the U-shaped supporting rod 208 is movably inserted into the vertical guide rail 209, and the bottom end of the vertical guide rail 209 is fixedly connected with the surface of the guide cylinder.

The surface of the sleeve 201 is provided with a detection tube 211, the end part of the bent conduit 210 is connected with the detection tube 211, the detection tube 211 penetrates through the sleeve 201 and extends into the inner cavity of the sleeve 201 and is communicated with the space between the sleeve 201 and the steam inlet pipe 101, a floating detection rod 213 is movably inserted on the detection tube 211, the top end of the detection tube 211 is fixedly provided with a mounting bracket 212, the bottom surface of the mounting bracket 212 is provided with a sensor (not shown in the figure) which is positioned on the same straight line with the floating detection rod 213, the steam entering the detection tube 211 pushes the floating detection rod 213 to move upwards and contact with the sensor, a triggering alarm signal is fed back to a worker, and adhered oil stains are pushed downwards by a movable ring 303 sliding on the inner wall of the rectifying tower, the mounting bracket 212 is provided with a controller 214, and the output end of the sensor is electrically connected with the controller 214. When steam leakage is caused by a gap at the connecting end of the steam inlet pipe 101, steam enters the detection pipe 211 and flows into the bent guide pipe 210 to push the gas in the detection pipe to flow, the U-shaped supporting rod 208 is pushed outwards to enable the U-shaped supporting rod 208 to move upwards, the limiting block 207 is synchronously driven to slide along the end face of the guide pipe 205 until the limiting block is separated from the convex disc 215, the reset spring 216 restores deformation, the pushing supporting rod 204 is driven to slide outwards along the guide pipe 205, the blocking sleeve 203 is pushed towards the inner cavity of the sleeve 201, the gap of the steam inlet pipe 101 is timely blocked by the blocking sleeve 203, further leakage of the steam is avoided, in the initial stage of the leakage, the steam entering the detection pipe 211 pushes the floating detection rod 213 to move upwards and contact with a sensor, and an alarm signal is triggered and fed back to a worker.

The end part of the blocking sleeve 203 far away from the sleeve is provided with a blocking ring 217, the surface of the blocking ring 217 is provided with an integrally formed convex ring 218, the sealing ring 202 is provided with an annular groove towards the surface of the blocking ring 217, the blocking ring 217 is tightly connected with the sealing ring 202 after moving, the pushing support rod 204 slides out along the guide pipe 205 outwards, the blocking sleeve 203 is pushed towards the inner cavity of the sleeve 201, the blocking sleeve 203 is enabled to plug the gap of the steam guide-in pipe 101 in time, the blocking ring 217 is enabled to synchronously block the blocking sleeve 203 and move, and finally the blocking sleeve is tightly connected with the sealing ring 202, a double-layer sealing structure is formed, leakage of steam is avoided, and the sealing effect is improved.

The working principle is as follows: when the device works, the light component (low-boiling-point substance) in the liquid phase is transferred into the gas phase and the heavy component (high-boiling-point substance) in the gas phase is transferred into the liquid phase by utilizing the property that each component in the mixture has different volatility, namely the vapor pressure of each component is different at the same temperature, so that the purpose of separation is realized, further, during production, steam is introduced into the rectifying tower through the steam introducing pipe 101, leakage of the steam is timely treated through the sleeve 201 and the blocking sleeve 203, when the steam leakage is caused by a gap (not a gap at the flange connecting end) at the connecting end of the steam introducing pipe 101 and the rectifying tower body 100, the steam enters the detecting pipe 211 and flows into the bent guide pipe 210 to push the gas in the bent guide pipe to flow, the U-shaped supporting rod 208 is pushed outwards, the U-shaped supporting rod 208 moves upwards, and the limiting block 207 is synchronously driven to slide along the end face of the guide pipe 205, until the steam guide pipe is separated from the convex disc 215, the return spring 216 recovers deformation to drive the pushing support rod 204 to slide outwards along the guide pipe 205, and pushes the blocking sleeve 203 towards the inner cavity of the sleeve 201, so that the blocking sleeve 203 moves along the surface of the steam guide pipe 101 and is finally inserted into a gap between the sleeve 201 and the steam guide pipe 101 to be plugged in time, and further leakage of steam is avoided.

And at the initial stage of leakage, leaked steam enters the detection pipe 211 through the steam inlet pipe 101, the steam entering the detection pipe 211 pushes the floating detection rod 213 to move upwards, the top end of the floating detection rod 213 is contacted with the sensor in the upward moving process, a triggering sensing signal is transmitted to the controller 214, an alarm signal is fed back to the equipment control center, and the alarm signal is fed back to a worker, so that the worker can timely make a response and perform corresponding processing.

The standard parts used in the invention can be purchased from the market, the special-shaped parts can be customized according to the description of the specification and the accompanying drawings, the specific connection mode of each part adopts conventional means such as bolts, rivets, welding and the like mature in the prior art, the machines, the parts and equipment adopt conventional models in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, so that the detailed description is omitted.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a petroleum benzene production is with mixing aromatic fractionation wall rectifying column which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the rectifying tower comprises a rectifying tower body (100), wherein a steam inlet pipe (101) is inserted into the rectifying tower body (100), a feed pipe (102) is arranged above the steam inlet pipe (101), a discharge pipe (103) is inserted into the surface of the rectifying tower body (100) opposite to the feed pipe (102), and a steam outlet pipe (104) is inserted into the top of the rectifying tower body (100);

leak protection subassembly (200), locate outside sleeve pipe (201) of steam inlet tube (101) including fixed cover, one section distance in interval between sleeve pipe (201) inner wall and steam inlet tube (101) outer wall, just one side of steam inlet tube (101) and rectifying column body (100) link is located to sleeve pipe (201) cover.

2. The mixed aromatic wall rectifying tower for producing petroleum benzene as claimed in claim 1, wherein: the outside activity cover of steam leading-in pipe (101) is equipped with separation sleeve (203), separation sleeve (203) outer wall and sleeve pipe (201) inner wall sliding connection, sleeve pipe (201) tip is equipped with sealing washer (202), the length of separation sleeve (203) is the same with the length of sleeve pipe (201), just the internal diameter of separation sleeve (203) equals the external diameter of steam leading-in pipe (101).

3. The mixed aromatic wall rectifying tower for producing petroleum benzene as claimed in claim 2, wherein: the end part of the blocking sleeve (203) is fixedly inserted with a pushing support rod (204), one side of the pushing support rod (204) is provided with a guide pipe (205), the pushing support rod (204) is movably inserted into the guide pipe (205), an integrally formed convex disc (215) is arranged on the pushing support rod (204), a reset spring (216) connected with the convex disc (215) is arranged in the guide pipe (205), and the tail end of the guide pipe (205) is fixedly connected with a flange plate at the inlet end of the steam inlet pipe (101).

4. The mixed aromatic wall rectifying tower for producing petroleum benzene as claimed in claim 3, wherein: the guide pipe (205) tip is equipped with stopper (207), stopper (207) are pressed on the flange, and reset spring (216) are in compression state, it has U type branch (208) to fix the grafting on stopper (207), guide pipe (205) fixed surface is equipped with perpendicular guide rail (209), U type branch (208) one end activity is pegged graft in curved pipe (210), just U type branch (208) activity is pegged graft on perpendicular guide rail (209), perpendicular guide rail (209) bottom and guide pipe (205) fixed surface are connected.

5. The mixed aromatic wall rectifying tower for producing petroleum benzene as claimed in claim 4, wherein: sleeve pipe (201) surface is equipped with detecting tube (211), bent pipe (210) tip is connected with detecting tube (211), detecting tube (211) run through sleeve pipe (201) stretch into its inner chamber and with sleeve pipe (201) and steam induction pipe (101) between the space intercommunication, just activity grafting has unsteady measuring rod (213) on detecting tube (211), the fixed installing support (212) that is equipped with in detecting tube (211) top, installing support (212) bottom surface is equipped with and floats measuring rod (213) and be located the sensor on same straight line, be equipped with controller (214) on installing support (212), the output and controller (214) electric connection of sensor.

6. The mixed aromatic wall rectifying tower for producing petroleum benzene as claimed in claim 5, wherein: the end part, far away from the sleeve, of the separation sleeve (203) is provided with a blocking ring (217), the surface of the blocking ring (217) is provided with an integrally formed convex ring (218), the surface, facing the blocking ring (217), of the sealing ring (202) is provided with an annular groove, and the blocking ring (217) is tightly connected with the sealing ring (202) after moving.