CN114602203B - Pentane rectifying tower and application method thereof - Google Patents
Pentane rectifying tower and application method thereof Download PDFInfo
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- CN114602203B CN114602203B CN202210306666.4A CN202210306666A CN114602203B CN 114602203 B CN114602203 B CN 114602203B CN 202210306666 A CN202210306666 A CN 202210306666A CN 114602203 B CN114602203 B CN 114602203B
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- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000007791 liquid phase Substances 0.000 claims abstract description 40
- 239000012071 phase Substances 0.000 claims description 22
- 239000007788 liquid Substances 0.000 claims description 17
- 238000007789 sealing Methods 0.000 claims description 15
- 238000004891 communication Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000003193 general anesthetic agent Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/16—Fractionating columns in which vapour bubbles through liquid
- B01D3/18—Fractionating columns in which vapour bubbles through liquid with horizontal bubble plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/16—Fractionating columns in which vapour bubbles through liquid
- B01D3/18—Fractionating columns in which vapour bubbles through liquid with horizontal bubble plates
- B01D3/20—Bubble caps; Risers for vapour; Discharge pipes for liquid
- B01D3/205—Bubble caps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/32—Other features of fractionating columns ; Constructional details of fractionating columns not provided for in groups B01D3/16 - B01D3/30
- B01D3/322—Reboiler specifications
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Separation By Low-Temperature Treatments (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a pentane rectifying tower and a use method thereof, relates to the technical field of pentane rectifying towers, and aims to solve the problem that when a pentane rectifying tower in the market at present is used for rectifying, liquid phase overflows from an upper sieve plate to a lower sieve plate, fluctuation of the liquid phase on the lower sieve plate is caused, so that part of the liquid phase can overflow downwards along with the fluctuation through a bubble cap, and insufficient rectification is caused. Seventeen sieve plates are arranged in the rectifying tower at equal intervals in a staggered mode, the outer ends of the sieve plates are fixedly connected with the inner wall of the rectifying tower, a plurality of bubble cap grooves are formed in the inner portion of the upper end of the sieve plate, bubble caps are arranged in the bubble cap grooves, bubble cap air inlet grooves are formed in the inner portion of the lower end of the sieve plate, air bleed grooves are formed in the inner portions of the bubble caps, flow limiting plug grooves are formed in the upper ends of the air bleed grooves, flow limiting plugs are arranged in the air bleed grooves, floating plates are arranged outside the upper ends of the bubble caps, and the flow limiting plugs correspond to the inner walls of the upper ends of the flow limiting plug grooves.
Description
Technical Field
The invention relates to the technical field of pentane rectifying towers, in particular to a pentane rectifying tower and a using method thereof.
Background
The high-purity pentane can be used as a solvent for preparing standard gas, calibration gas and used as a molecular sieve desorbing agent; the artificial ice and anesthetic agent are manufactured, amyl alcohol, isopentane and the like are synthesized, meanwhile, the purity requirement of the pentane foaming agent product is higher and higher due to the strict control of organic matter emission, and the low-purity product gradually exits from the market. At present, pentane is generally prepared by the hydrocracked separation of light naphtha fractions. After the light naphtha raw material is hydrogenated, the product purity and the distillation range are mainly realized by a rectification system, and the separation precision of a rectification system tower, the heat exchange effect of a condenser, the operation automation and the stability degree play a vital role in improving the purity of pentane products and reducing the processing cost. The rectifying tower is a tower type gas-liquid contacting device for rectifying. By utilizing the characteristic that each component in the mixture has different volatility, namely the vapor pressure of each component in pentane is different at the same temperature, the light component in the liquid phase is transferred to the gas phase, and the heavy component in the gas phase is transferred to the liquid phase, so that the purpose of separation is realized. The general rectifying device consists of a rectifying tower body, a condenser, a reflux tank, a reboiler and other devices. The feed enters the column from a stage of trays in the rectification column, which are referred to as feed trays. The rectifying tower is divided into an upper section and a lower section by the feeding plate, the upper part of the feeding plate is called a rectifying section, and the lower part of the feeding plate is called a stripping section.
When the liquid phase overflows from the upper sieve plate to the lower sieve plate, the liquid phase on the lower sieve plate can be fluctuated, so that part of the liquid phase can overflow downwards along with the fluctuation through the bubble cap, and the rectification is insufficient, and therefore, the pentane rectifying tower and the use method thereof are provided so as to solve the problems.
Disclosure of Invention
The invention aims to provide a pentane rectifying tower and a use method thereof, which are used for solving the problem that when the pentane rectifying tower in the prior art is used for rectifying, liquid phase overflows from an upper sieve plate to a lower sieve plate, fluctuation of the liquid phase on the lower sieve plate is caused, so that part of the liquid phase can overflow downwards along with the fluctuation through a bubble cap, and insufficient rectification is caused.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a pentane rectifying column, includes the rectifying column, the inside equidistance dislocation of rectifying column is provided with seventeen sieve, and the outer end of sieve and the inner wall fixed connection of rectifying column, a plurality of bubble cap grooves have been seted up to the inside of sieve upper end, the inside in bubble cap groove is provided with the bubble cap, the inside of sieve lower extreme is seted up at bubble cap inlet channel, and bubble cap inlet channel corresponds the setting with the bubble cap groove, the inside in bubble cap upper end is provided with the bleed air groove, the upper end in bleed air groove is provided with the restriction stopper groove, the inside in bleed air groove is provided with the restriction stopper, the outside in bubble cap upper end is provided with the kickboard, and the kickboard passes through kickboard frame and restriction stopper fixed connection, restriction stopper corresponds with restriction stopper groove upper end inner wall.
Preferably, a heat exchanger is arranged on one side of the rectifying tower, a reboiler is arranged on one side of the heat exchanger, the upper end of the rectifying tower is in sealing connection with the air inlet end of the heat exchanger through an air outlet pipe, the liquid outlet end of the heat exchanger is in sealing connection with one side of the upper end of the rectifying tower through a return pipe, and the air outlet pipe and the return pipe are respectively communicated with the inside of the rectifying tower.
Preferably, one side of rectifying column lower extreme passes through discharging pipe sealing connection with the water inlet end of reboiler, one end that the reboiler is close to rectifying column passes through intake pipe sealing connection with one side of rectifying column lower extreme, intake pipe and discharging pipe link up with the inside of rectifying column respectively, the intermediate position department of rectifying column opposite side is provided with the inlet pipe, and the inlet pipe link up with the inside of rectifying column mutually.
Preferably, the bubble cap groove is the round table groove, and the diameter of bubble cap groove top-down diminishes gradually, and is adjacent the bubble cap groove is tangent, the bubble cap air inlet groove is the round table groove, and the diameter of bubble cap air inlet groove top-down enlarges gradually, be provided with bubble cap air inlet pipe groove between bubble cap groove and the bubble cap air inlet groove, the below of air bleed groove is provided with bubble cap intake pipe, and bubble cap intake pipe and bubble cap air inlet pipe groove threaded connection, one side of sieve is provided with the current-limiting plate, the opposite side fixedly connected with overflow plate of current-limiting plate, and current-limiting plate and overflow plate fixed connection.
Preferably, a communicating groove is arranged above the flow-limiting plug groove, the lower end of the central position of the floating plate frame extends to the inside of the communicating groove, the flow-limiting plug groove and the air-entraining groove, the outer side of the lower end of the floating plate frame is fixedly connected with the floating plate, and the floating plate frame is in sliding connection with the bubble cap.
Preferably, the outside of bleed air groove is provided with the annular of giving vent to anger, and link up through restriction plug groove and intercommunication groove between annular of giving vent to anger and the bleed air groove, the inboard and the outside of annular of giving vent to anger all rectangular distribution have a plurality of ventholes.
Preferably, the upper end of the overflow plate is inclined towards one side far away from the center of the sieve plate, the lower end of the overflow plate is a vertical plate, a through groove is formed between the adjacent bubble cap grooves, a flow-limiting plug sealing ring is fixedly arranged at the lower end of the inner wall of the flow-limiting plug groove, and the drift diameter of the air-entraining groove is larger than the diameter of the flow-limiting plug.
The application method of the pentane rectifying tower comprises the following steps:
step 1: pentane to be treated enters the rectifying tower through a feeding pipe after being heated, when the pentane flows to the upper side of the sieve plate along with the dislocation guide of the sieve plate, the pentane flows into the bubble cap groove, meanwhile flows into the adjacent bubble cap groove through the arrangement of the through groove, when the liquid level is higher than the height of the flow limiting plate, overflowed liquid stays above the sieve plate below along with the guide of the overflow plate until the overflowed liquid flows to the bottom of the rectifying tower, a reboiling heating steam valve is started to heat and vaporize pentane mechanical energy at the bottom of the rectifying tower, and then the overflowed liquid enters the rectifying tower to establish self circulation;
step 2: the gas phase flows upwards, and is guided into a bubble cap air inlet pipe of the bubble cap by a truncated cone shape of a bubble cap air inlet groove, and is uniformly sprayed out through an air outlet hole along an air inlet groove, a flow limiting plug groove, a communication groove and an air outlet ring groove, so that the gas phase is fully contacted with the liquid phase;
step 3: the floating plate floats along with the liquid level of the liquid phase above the sieve plate, when the liquid level exceeds the height of the lower surface of the communicating groove, the floating plate is lifted upwards, the floating plate drives the floating plate frame to integrally move upwards, and the floating plate frame drives the flow limiting plug to be attached to the inner wall of the flow limiting plug groove, so that overflow is effectively prevented;
step 4: the gas phase sequentially passes through the sieve plates and flows to the top of the rectifying tower, the liquid phase enters the heat exchanger through the air outlet pipe, and the gas phase is changed into the liquid phase and then is returned to the rectifying tower through the return pipe due to the cooling of the heat exchanger, so that the sieve plates above the feed pipe are also filled with the liquid phase, and the rectifying of pentane is realized by circulating the gas phase and the liquid phase.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the floating plate is arranged at the outer end of the bubble cap, the floating plate can be lifted along with the liquid level, the floating plate frame is in sliding connection with the bubble cap, the flow limiting plug can be driven to move upwards, the flow limiting plug groove is blocked, the liquid phase can be effectively prevented from passing through the bubble cap air inlet pipe, the air entraining groove and the flow limiting plug groove to overflow, the gas phase is introduced into the air outlet ring groove through the communication groove, a plurality of air outlet holes are formed in the inner side and the outer side of the air outlet ring groove in a rectangular mode, the gas phase can be dispersed into small bubbles, so that the gas phase and the liquid phase are fully contacted, the cone-shaped bubble cap groove is arranged on the upper surface of the sieve plate, the liquid phase can be concentrated in the cone-shaped bubble cap groove, the gas outlet ring groove can be fully immersed into the liquid phase of the bubble cap groove, the rectifying effect is improved, the cone-shaped bubble cap air inlet groove arranged on the lower surface of the sieve plate can effectively gather the gas phase and guide the gas phase into the bubble cap, the pressure flowing upwards is concentrated due to the inclined arrangement of the surface of the bubble cap air inlet groove, the liquid phase collected on the lower surface of the sieve plate can drip down along with the flow of the sieve plate, and the problem that the overflow of the liquid phase on the lower liquid phase can be caused to overflow on the sieve plate along with the liquid phase of the sieve plate when the upper liquid phase is rectified by the pentane rectifying tower on the market is rectified from top to upper side.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram showing the internal structure of the rectifying column according to the present invention;
FIG. 3 is a schematic view of the structure of the screen plate according to the present invention;
FIG. 4 is a schematic view of the structure of a blister in the present invention;
fig. 5 is a top view of a screen deck according to the invention.
In the figure: 1. a rectifying tower; 2. a heat exchanger; 3. a reboiler; 4. a feed pipe; 5. an air inlet pipe; 6. a discharge pipe; 7. an air outlet pipe; 8. a return pipe; 9. a sieve plate; 10. an overflow plate; 11. a blister; 12. a flow-limiting plate; 13. a blister slot; 14. a blister air inlet slot; 15. a through groove; 16. a bubble cap air inlet pipe; 17. a bleed air tank; 18. a flow-limiting plug groove; 19. a communication groove; 20. a flow restricting plug; 21. a restrictor plug seal ring; 22. a floating plate frame; 23. a floating plate; 24. an air outlet ring groove; 25. an air outlet hole; 26. a bubble cap air inlet pipe groove.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1-5, an embodiment of the present invention is provided: the utility model provides a pentane rectifying column, including rectifying column 1, rectifying column 1's inside equidistance dislocation is provided with seventeen sieve plates 9, and the outer end of sieve plate 9 and rectifying column 1's inner wall fixed connection, a plurality of bubble cap grooves 13 have been seted up to the inside of sieve plate 9 upper end, bubble cap groove 13's inside is provided with bubble cap 11, bubble cap inlet channel 14 has been seted up to the inside of sieve plate 9 lower extreme, and bubble cap inlet channel 14 and bubble cap groove 13 correspond the setting, bubble cap 11 upper end's inside is provided with bleed air groove 17, bleed air groove 17's upper end is provided with current-limiting plug groove 18, bleed air groove 17's inside is provided with current-limiting plug 20, bubble cap 11 upper end's outside is provided with kickboard 23, and kickboard 23 passes through kickboard 22 and current-limiting plug 20 fixed connection, current-limiting plug 20 and current-limiting plug groove 18 upper end inner wall correspond.
Referring to fig. 1, a heat exchanger 2 is disposed on one side of a rectifying tower 1, a reboiler 3 is disposed on one side of the heat exchanger 2, an upper end of the rectifying tower 1 is in sealing connection with an air inlet end of the heat exchanger 2 through an air outlet pipe 7, a liquid outlet end of the heat exchanger 2 is in sealing connection with one side of the upper end of the rectifying tower 1 through a return pipe 8, and the air outlet pipe 7 and the return pipe 8 are respectively communicated with the interior of the rectifying tower 1.
Referring to fig. 1, one side of the lower end of the rectifying tower 1 is in sealing connection with the water inlet end of the reboiler 3 through a discharge pipe 6, one end of the reboiler 3, which is close to the rectifying tower 1, is in sealing connection with one side of the lower end of the rectifying tower 1 through an air inlet pipe 5, the air inlet pipe 5 and the discharge pipe 6 are respectively communicated with the interior of the rectifying tower 1, a feed pipe 4 is arranged at the middle position of the other side of the rectifying tower 1, and the feed pipe 4 is communicated with the interior of the rectifying tower 1.
Referring to fig. 2, 3 and 5, the bubble cap slot 13 is a circular table slot, the diameters of the bubble cap slots 13 gradually decrease from top to bottom, adjacent bubble cap slots 13 are tangent, the bubble cap air inlet slot 14 is a circular table slot, the diameters of the bubble cap air inlet slots 14 gradually increase from top to bottom, a bubble cap air inlet pipe slot 26 is arranged between the bubble cap slots 13 and the bubble cap air inlet slots 14, a bubble cap air inlet pipe 16 is arranged below the air inlet slot 17, the bubble cap air inlet pipe 16 is in threaded connection with the bubble cap air inlet pipe slot 26, a current limiting plate 12 is arranged on one side of the sieve plate 9, an overflow plate 10 is fixedly connected on the other side of the current limiting plate 12, and the current limiting plate 12 is fixedly connected with the overflow plate 10.
Referring to fig. 4, a communicating groove 19 is provided above the flow-limiting plug groove 18, the lower end of the central position of the floating plate frame 22 extends to the inside of the communicating groove 19, the flow-limiting plug groove 18 and the air-entraining groove 17, the outer side of the lower end of the floating plate frame 22 is fixedly connected with a floating plate 23, and the floating plate frame 22 is slidably connected with the bubble cap 11.
Referring to fig. 4, an air outlet ring groove 24 is disposed outside the air entraining groove 17, and the air outlet ring groove 24 is communicated with the air entraining groove 17 through a flow limiting plug groove 18 and a communication groove 19, and a plurality of air outlet holes 25 are rectangular distributed on the inner side and the outer side of the air outlet ring groove 24.
Referring to fig. 2-5, the upper end of the overflow plate 10 is inclined to a side far away from the center of the screen plate 9, the lower end of the overflow plate 10 is a vertical plate, a through groove 15 is formed between adjacent bubble cap grooves 13, a flow-limiting plug sealing ring 21 is fixedly arranged at the lower end of the inner wall of the flow-limiting plug groove 18, and the drift diameter of the air-entraining groove 17 is larger than that of the flow-limiting plug 20.
The application method of the pentane rectifying tower comprises the following steps:
step 1: pentane to be treated enters the rectifying tower 1 through the feeding pipe 4 after being heated, when the pentane flows to the upper side of the sieve plate 9 along with the dislocation guide of the sieve plate 9, the pentane flows into the bubble cap groove 13, simultaneously flows into the adjacent bubble cap groove 13 through the arrangement of the through groove 15, when the liquid level is higher than the height of the current limiting plate 12, overflowed liquid phase stays above the sieve plate 9 below along with the guide of the overflow plate 10 until the pentane flows to the bottom of the rectifying tower 1, a reboiling heating steam valve is opened to heat and vaporize pentane mechanical energy at the bottom of the rectifying tower 1, and then the pentane flows into the rectifying tower 1 to establish self circulation;
step 2: the gas phase flows upwards, and is guided into the bubble cap air inlet pipe 16 of the bubble cap 11 due to the truncated cone shape of the bubble cap air inlet groove 14, and the gas is uniformly sprayed out along the air-entraining groove 17, the flow-limiting plug groove 18, the communication groove 19 and the air outlet ring groove 24 through the air outlet holes 25, so that the gas phase is fully contacted with the liquid phase;
step 3: the floating plate 23 floats along with the liquid level of the liquid phase above the screen plate 9, when the liquid level exceeds the height of the lower surface of the communication groove 19, the floating plate 23 is lifted upwards, the floating plate 23 drives the floating plate frame 22 to integrally move upwards, and the floating plate frame 22 drives the flow-limiting plug 20 to be attached to the inner wall of the flow-limiting plug groove 18, so that overflow is effectively prevented;
step 4: the gas phase sequentially passes through the sieve plate 9 and flows to the top of the rectifying tower 1, the liquid phase enters the heat exchanger 2 through the gas outlet pipe 7, and the gas phase is changed into the liquid phase and then is returned to the rectifying tower 1 through the return pipe 8 due to the cooling of the heat exchanger 2, at the moment, the sieve plate 9 above the feeding pipe 4 is also filled with the liquid phase, and the circulating gas phase and the liquid phase realize the rectification of pentane.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. Pentane rectifying column, including rectifying column (1), its characterized in that: seventeen sieve plates (9) are arranged in the rectifying tower (1) at equal intervals in a staggered mode, the outer ends of the sieve plates (9) are fixedly connected with the inner wall of the rectifying tower (1), a plurality of bubble cap grooves (13) are formed in the upper ends of the sieve plates (9), bubble caps (11) are arranged in the bubble cap grooves (13), bubble cap air inlet grooves (14) are formed in the lower ends of the sieve plates (9), the bubble cap air inlet grooves (14) are correspondingly arranged with the bubble cap grooves (13), air entraining grooves (17) are formed in the upper ends of the bubble caps (11), flow limiting plug grooves (18) are formed in the upper ends of the air entraining grooves (17), flow limiting plugs (20) are arranged in the inner ends of the air entraining grooves (17), floating plates (23) are fixedly connected with the upper ends of the bubble caps (11) through floating plates (22), and the flow limiting plugs (20) are correspondingly arranged on the inner walls of the upper ends of the flow limiting plug grooves (18).
2. A pentane rectifying column according to claim 1, characterized in that: one side of rectifying column (1) is provided with heat exchanger (2), one side of heat exchanger (2) is provided with reboiler (3), the upper end of rectifying column (1) and the inlet end of heat exchanger (2) pass through outlet duct (7) sealing connection, and the play liquid end of heat exchanger (2) and one side of rectifying column (1) upper end pass through back flow (8) sealing connection, outlet duct (7) and back flow (8) link up with the inside of rectifying column (1) respectively.
3. A pentane rectifying column according to claim 2, characterized in that: one side of rectifying column (1) lower extreme and the end of intaking of reboiler (3) pass through discharging pipe (6) sealing connection, one end that reboiler (3) are close to rectifying column (1) and one side of rectifying column (1) lower extreme pass through intake pipe (5) sealing connection, intake pipe (5) and discharging pipe (6) link up with the inside of rectifying column (1) respectively, the intermediate position department of rectifying column (1) opposite side is provided with inlet pipe (4), and inlet pipe (4) link up with the inside of rectifying column (1) mutually.
4. A pentane rectifying column according to claim 3, characterized in that: the bubble cap groove (13) is a circular truncated cone groove, the diameter of the bubble cap groove (13) is gradually reduced from top to bottom, the bubble cap grooves (13) are tangential, the bubble cap air inlet groove (14) is a circular truncated cone groove, the diameter of the bubble cap air inlet groove (14) is gradually increased from top to bottom, a bubble cap air inlet pipe groove (26) is arranged between the bubble cap groove (13) and the bubble cap air inlet groove (14), a bubble cap air inlet pipe (16) is arranged below the air inlet groove (17), the bubble cap air inlet pipe (16) is in threaded connection with the bubble cap air inlet pipe groove (26), one side of the sieve plate (9) is provided with a current limiting plate (12), the other side of the current limiting plate (12) is fixedly connected with an overflow plate (10), and the current limiting plate (12) is fixedly connected with the overflow plate (10).
5. The pentane rectifying column of claim 4, wherein: the upper portion of current limiting stopper groove (18) is provided with intercommunication groove (19), the lower extreme of floating plate frame (22) central point puts and extends to the inside of intercommunication groove (19), current limiting stopper groove (18) and bleed air groove (17), the outside and the floating plate (23) fixed connection of floating plate frame (22) lower extreme, floating plate frame (22) and bubble cap (11) sliding connection.
6. The pentane rectifying column of claim 5, wherein: the outside of bleed air groove (17) is provided with annular groove (24) of giving vent to anger, and link up through restriction plug groove (18) and intercommunication groove (19) between annular groove (24) and the bleed air groove (17), the inboard and the outside of annular groove (24) of giving vent to anger all rectangular distribution have a plurality of venthole (25).
7. The pentane rectifying column of claim 6, wherein: the upper end of the overflow plate (10) inclines to one side far away from the center of the sieve plate (9), the lower end of the overflow plate (10) is a vertical plate, a through groove (15) is formed between the adjacent bubble cap grooves (13), a flow-limiting plug sealing ring (21) is fixedly arranged at the lower end of the inner wall of the flow-limiting plug groove (18), and the drift diameter of the air-entraining groove (17) is larger than the diameter of the flow-limiting plug (20).
8. The method for using the pentane rectifying tower according to claim 7, comprising the following steps:
step 1: pentane to be treated enters the rectification column (1) through the feeding pipe (4) after being heated, when the pentane flows to the upper part of the sieve plate (9) along with dislocation guidance of the sieve plate (9), the pentane flows into the bubble cap groove (13), meanwhile flows into the adjacent bubble cap groove (13) through the arrangement of the through groove (15), when the liquid level is higher than the height of the flow limiting plate (12), overflowed liquid phase stays above the sieve plate (9) below along with guidance of the overflow plate (10) until the pentane flows to the bottom of the rectification column (1), and a reboiling heating steam valve is opened to heat and vaporize the pentane mechanical energy at the bottom of the rectification column (1), and then the pentane flows into the rectification column (1) to establish self circulation;
step 2: the gas phase flows upwards, and is guided into a bubble cap air inlet pipe (16) of the bubble cap (11) by a truncated cone shape of a bubble cap air inlet groove (14), and the gas is uniformly sprayed out along a gas-introducing groove (17), a flow-limiting plug groove (18), a communication groove (19) and a gas outlet ring groove (24) through a gas outlet hole (25), so that the gas phase is fully contacted with the liquid phase;
step 3: the floating plate (23) floats along with the liquid level of the liquid phase above the screen plate (9), when the liquid level exceeds the height of the lower surface of the communicating groove (19), the floating plate (23) is lifted upwards, the floating plate (23) drives the floating plate frame (22) to integrally move upwards, and the floating plate frame (22) drives the flow limiting plug (20) to be attached to the inner wall of the flow limiting plug groove (18), so that overflow is effectively prevented;
step 4: the gas phase sequentially passes through the sieve plates (9) and flows to the top of the rectifying tower (1), the liquid phase enters the heat exchanger (2) through the air outlet pipe (7), and the gas phase is changed into the liquid phase through cooling of the heat exchanger (2) and then is returned to the rectifying tower (1) through the return pipe (8), so that the sieve plates (9) above the feed pipe (4) are also filled with the liquid phase, and the rectifying of pentane is realized by circulating the gas phase and the liquid phase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210306666.4A CN114602203B (en) | 2022-03-25 | 2022-03-25 | Pentane rectifying tower and application method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210306666.4A CN114602203B (en) | 2022-03-25 | 2022-03-25 | Pentane rectifying tower and application method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114602203A CN114602203A (en) | 2022-06-10 |
| CN114602203B true CN114602203B (en) | 2023-12-19 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2313653Y (en) * | 1997-11-11 | 1999-04-14 | 郭彦书 | Gas-liquid contact controller |
| CN103480170A (en) * | 2013-10-12 | 2014-01-01 | 荆州市金威石化配件有限公司 | Gas-baffling jet tower plate |
| CN107042023A (en) * | 2016-11-30 | 2017-08-15 | 南京睿宇物联网科技有限公司 | A kind of new valve plate |
| CN206881184U (en) * | 2017-06-27 | 2018-01-16 | 常州红太阳药业有限公司 | A kind of rectifying column for acetoneand ethyl acetate separation |
| CN211070114U (en) * | 2019-11-04 | 2020-07-24 | 湖北远春石化设备制造有限公司 | Floating valve tower plate structure |
| CN112337126A (en) * | 2019-08-07 | 2021-02-09 | 洪湖市金发焦化设备成套有限公司 | Chemical efficient energy-saving high-purity rectifying tower |
-
2022
- 2022-03-25 CN CN202210306666.4A patent/CN114602203B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2313653Y (en) * | 1997-11-11 | 1999-04-14 | 郭彦书 | Gas-liquid contact controller |
| CN103480170A (en) * | 2013-10-12 | 2014-01-01 | 荆州市金威石化配件有限公司 | Gas-baffling jet tower plate |
| CN107042023A (en) * | 2016-11-30 | 2017-08-15 | 南京睿宇物联网科技有限公司 | A kind of new valve plate |
| CN206881184U (en) * | 2017-06-27 | 2018-01-16 | 常州红太阳药业有限公司 | A kind of rectifying column for acetoneand ethyl acetate separation |
| CN112337126A (en) * | 2019-08-07 | 2021-02-09 | 洪湖市金发焦化设备成套有限公司 | Chemical efficient energy-saving high-purity rectifying tower |
| CN211070114U (en) * | 2019-11-04 | 2020-07-24 | 湖北远春石化设备制造有限公司 | Floating valve tower plate structure |
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| CN114602203A (en) | 2022-06-10 |
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