CN115888154B - Tetrahydrofuran high pressure rectifying column - Google Patents
Tetrahydrofuran high pressure rectifying column Download PDFInfo
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- CN115888154B CN115888154B CN202211099755.2A CN202211099755A CN115888154B CN 115888154 B CN115888154 B CN 115888154B CN 202211099755 A CN202211099755 A CN 202211099755A CN 115888154 B CN115888154 B CN 115888154B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The invention provides a tetrahydrofuran high-pressure rectifying tower, which aims at the problem of insufficient reaction caused by countercurrent of gas and liquid on a tower plate in the prior art. The invention can jack up the cap under the action of high-pressure gas from bottom to top, and can keep the cap suspended and rotated at the top end of the metal pipe under the action of tangential force, at the moment, the gas can be continuously drilled out from the bottom end of the cap and contacted with liquid blocked by the overflow dam, so that the sufficient contact between the gas and the liquid is improved, and the reaction efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of high-pressure rectifying towers, and particularly relates to a tetrahydrofuran high-pressure rectifying tower.
Background
The rectification is a separation process for separating the components by utilizing the difference in volatility of the components in the mixture, and common equipment comprises a plate type rectification tower and a packed rectification tower. The principle and equipment flow of precision distillation are the same as those of common distillation, except that the relative volatility between components in a system to be separated is smaller (< 1.05-1.10), so that high-efficiency precision packing is adopted to realize separation and purification of the components to be separated, the distillation is usually carried out in a distillation tower, and gas-liquid two phases are in countercurrent contact to carry out phase heat and mass transfer.
Because the liquid flows from top to bottom under the action of self gravity, in order to enable the liquid to better contact with the gas, the tray of the tray type tower divides the inner space of the rectifying tower into a plurality of small spaces, the liquid flows from top to bottom in operation, and the gas flows through the gap of the tray from bottom to top to contact with the liquid, but the existing tray design is generally provided with an overflow dam for enabling the gas-liquid to stay on the tray for a longer time, the small holes on the tray cannot be broken when the impact force of the gas from bottom to top is small, and the gas cannot pass through the liquid leakage holes on the edges at the moment, so that the novel tray type tower is needed to solve the problem that the gas flow is not sufficiently fused.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a tetrahydrofuran high-pressure rectifying tower.
The invention provides a tetrahydrofuran high-pressure rectifying tower, which comprises a rectifying tower body with a cylindrical structure internally provided with a cavity, wherein an air outlet pipe and a discharge pipe are reserved at the upper end and the lower end of the rectifying tower body respectively, an air inlet pipe is arranged at the position, close to the bottom end, of the circumferential outer wall of the rectifying tower body, a reflux pipe is inserted and connected at the position, close to the top end, of the circumferential outer wall of the rectifying tower body, a plurality of mutually parallel first tower plates are arranged at the circumferential inner wall of the first tower plates, tangential surfaces are arranged at the circumferential outer wall of the first tower plates, overflow dams are fixed at the edge of the upper surface of the tangential surfaces, a plurality of through holes distributed in a staggered manner are arranged at the first tower plates, the upper surface of the first tower plates is positioned above the through holes, a spiral air outlet device is arranged at the upper side of the through holes, the spiral air outlet device comprises a metal pipe fixed above the through holes, the top pipe orifice of the metal pipe is higher in horizontal height than an overflow dam, a sliding block is connected at the top end orifice of the metal pipe, three to four air outlet grooves are inserted and connected at the bottom ends of the sliding block, a plurality of mutually parallel first tower plates are arranged at the circumferential inner walls of the top ends of the rectifying tower body, tangential surfaces of the sliding block are provided with a plurality of mutually parallel tower plates, tangential surfaces are provided with through tangential surfaces, tangential surfaces are arranged at the top surfaces of the metal pipe and are in a certain distance from the top wall of the metal pipe, and the top surface of the top gas is in a certain position of the top gas channel is in contact with the top of the top gas channel, and can be completely contacted with the top to the top gas channel, and can well down tightly contact with the top gas, and can rotate.
The invention is further arranged in that three to five U-shaped notches are formed at the edge of the bottom end of the cap, and U-shaped extension pipes with downward openings and integrally formed into a U-shaped plate structure are fixed at the U-shaped notches on the outer wall of the cap; through the arrangement of the U-shaped notch and the U-shaped extension pipe, the contact area between the gas and the liquid can be enlarged when the gas is drilled at the bottom edge of the cap, and then the reaction efficiency with the liquid is improved.
The invention is further arranged in that the pipe orifice at the top end of the metal pipe is provided with an annular groove, a sealing gasket is clamped in the annular groove, the circumferential outer wall of the sliding block is in sliding fit with the inner wall of the metal pipe, and when no high-pressure gas is ejected from bottom to top, the cap is tightly buckled at the top end of the metal pipe, so that liquid is prevented from overflowing from the pipe orifice of the metal pipe; it is also ensured that the sliding block can move up with the cap normally when high pressure gas is on the top below.
The invention is further arranged in that the lower surface of the column plate I of each column plate is fixedly provided with a baffle block on the circumferential inner wall of the column body of the rectifying column, the circumferential outer wall of the column plate I is provided with a sealing groove, sealing strips are clamped in the sealing groove, and the arrangement of the sealing strips can prevent liquid from flowing to the lower part of the column plate I from the position outside the overflow dam.
The invention is further arranged in that a gas baffle is fixed below the tangential plane on the lower surface of the first column plate, the cross section of the first column plate is totally closed by the gas baffle, a liquid leakage hole is formed in the gas baffle, tension springs are fixed at two ends of the lower surface of the gas baffle, spring baffles are fixed at the bottom ends of the two tension springs, the same baffle cover is fixed between the two spring baffles, the baffle cover keeps a close contact state with the lower surface of the gas baffle when no object impacts on the top end of the baffle cover, so that gas is prevented from passing through the liquid leakage hole from bottom to top, and when liquid overflowed from an overflow dam is accumulated above the gas baffle to reach a certain weight, the tension force of the two tension springs to the baffle cover is broken, and at the moment, the liquid is discharged from the liquid leakage hole.
The invention is further arranged in that a column plate II in a potato chip structure is fixed between two adjacent column plates I, a water flowing groove is reserved in the middle of the column plate II, two ends of the water flowing groove are not equal in height, a drain hole is formed in the end part of the water flowing groove at the lower end of the column plate II and is positioned above a liquid collecting groove of the next column plate I, strip-shaped planes are formed on the upper surface of the column plate II and are respectively positioned on two sides of the water flowing groove, strip-shaped vent holes are respectively formed in the middle of the two strip-shaped planes, the upper surface of the column plate II is positioned at the edge of the upper surface of the strip-shaped vent holes, vent holes are hinged to the edges of the upper surfaces of the two vent holes, the hinged positions of the two vent holes are respectively positioned on one side far away from the water flowing groove, the two vent holes are mutually symmetrical relative to the water flowing groove, and by arranging the hinged points of the vent holes at the higher positions, the gas knight-man can pass through the liquid flowing downwards as much as possible, and the reaction efficiency is improved.
When the gas flow is large, the gas can burst through the gas hole cover to ventilate when the gas leakage holes are insufficient for the gas to pass through; and through the arrangement of the column plate II with the running water groove in the middle and the leak hole arranged at the end part of the lower end, the liquid flowing down from the previous column plate I can be concentrated and leaked down from the leak hole, so that larger impact force is generated, and the energy of the column plate II is collected and utilized.
The invention is further arranged in that a diversion mechanism is arranged above the liquid collecting tank, the diversion mechanism comprises a first bearing frame which is fixed in the middle of the upper surface of the column plate and is close to the liquid collecting tank, a vertical transmission shaft is rotatably connected in the middle of the top of the first bearing frame, a driving paddle wheel and a driving conical gear are respectively fixed at the upper end and the lower end of the transmission shaft, the bottom of the liquid collecting tank is positioned at the two sides of the driving conical gear, a second bearing frame is respectively fixed at the two sides of the driving conical gear, a transmission rod which is horizontally arranged is respectively arranged between the two second bearing frames, a driven paddle wheel and a driven gear are respectively fixed at the two ends of the transmission rod, the driven gear and the driving conical gear are meshed with each other, a diversion plate with the same section in a splayed structure is arranged at the two sides of the first bearing frame, and the driving paddle wheel is positioned below the leak hole; the upper surface of the first column plate is provided with two diversion trenches which are in an S-shaped structure and are communicated with the liquid collecting tank; the liquid from the top can mostly impact on the active paddle wheel, and by the arrangement of the diversion mechanism, the kinetic energy of the liquid falling from above can be converted into local circulation pushing to the liquid in the liquid collecting tank, so that the internal circulation of the liquid intercepted in the overflow dam can be increased.
The invention is further arranged in that one end of the return pipe far away from the rectifying tower body is communicated with a three-way pipe, a side branch pipe of the three-way pipe is communicated with a one-way valve, a liquid inlet end of the one-way valve is communicated with a conveying pipe, one end of the conveying pipe far away from the three-way pipe is provided with a hydraulic pump, a liquid inlet of the hydraulic pump is communicated with a liquid suction pipe, a pipe orifice of one end of the liquid suction pipe far away from the hydraulic pump is inserted into the rectifying tower body and is close to the bottom, a detector is arranged at the bottom of the rectifying tower body, a signal output end of the detector is connected with a controller through a signal wire, and a signal output end of the controller is connected with a motor control switch of the hydraulic pump through the signal wire; through the arrangement of the detector and the hydraulic pump, the purity can be detected in time when the liquid after reacting with the gas flows to the bottom during the reaction, and if the purity does not reach the standard, the hydraulic pump is started to continuously extract the liquid and then enter the return pipe; the detector also comprises a liquid level sensor, when the liquid is detected to be filled for the first time, redundant liquid can flow into the bottom when the liquid on the first tower plate of all layers is full, the filling is stopped when the liquid reaches the liquid level sensor, and the hydraulic pump is started to circulate.
The invention is further arranged in that the pipe orifice at the top end of the discharge pipe is at least ten centimeters higher than the inner bottom of the rectifying tower body, and one end of the arc-shaped pipe far away from the air inlet pipe is provided with an upturned structure; and the discharge pipe can block a part of sediment at the bottom of the rectifying tower body.
The invention is further arranged in that the top end of the overflow dam is fixedly provided with a plurality of baffle teeth which are distributed at equal intervals, so that when in use, the reacted liquid generates floaters or foams, the floaters or foams can be blocked by the baffle teeth at the top end of the overflow dam, the overflowed liquid does not contain or contains few impurities, and the risk of blockage is reduced.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the tetrahydrofuran high-pressure rectifying tower, through the arrangement of the four air outlet grooves which are arranged on the lower surface of the sliding block but are not round in center and are distributed in a circumferential array, the cap can be jacked up under the action of the top-down high-pressure air, the cap can be kept suspended and rotated at the top end of the metal pipe under the action of tangential force, and at the moment, air can be continuously drilled out from the bottom end of the cap and contacted with liquid blocked by the overflow dam, so that the full contact of the air and the liquid is improved, and the reaction efficiency is improved.
2. According to the tetrahydrofuran high-pressure rectifying tower, the U-shaped notch and the U-shaped extension tube are arranged in the lower opening of the cap, so that the contact area between gas and liquid can be enlarged when the gas is drilled out at the bottom edge of the cap, and the reaction efficiency with the liquid can be improved.
3. According to the tetrahydrofuran high-pressure rectifying tower, through the arrangement of the gas baffle, gas can be prevented from passing through the liquid leakage holes from bottom to top, when liquid overflowed from the overflow dam is accumulated above the gas baffle to reach a certain weight, the tension force of the two tension springs on the baffle cover 27 can be broken, and at the moment, the liquid can be discharged from the liquid leakage holes.
4. According to the tetrahydrofuran high-pressure rectifying tower, through the arrangement of the gas hole cover hinged to the second tower plate, when the gas flow is large, the gas can burst through the gas hole cover to ventilate when the leakage hole is insufficient for the gas to pass through; and through the arrangement of the column plate II with the running water groove in the middle and the leak hole arranged at the end part of the lower end, the liquid flowing down from the previous column plate I can be concentrated and leaked down from the leak hole, so that larger impact force is generated, and the energy of the column plate II is collected and utilized.
5. According to the tetrahydrofuran high-pressure rectifying tower, through the arrangement of the detector and the hydraulic pump, purity can be timely detected when liquid after reaction with gas flows to the bottom during reaction, and if the purity does not reach the standard, the hydraulic pump 7 is started to continuously extract the liquid and then enter the return pipe.
6. The tetrahydrofuran high-pressure rectifying tower can prevent the overflowed liquid from containing no or little inclusion and reduce the risk of blockage when the reacted liquid generates floaters or foams when in use.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a tetrahydrofuran high-pressure rectifying tower according to the present invention;
FIG. 2 is a schematic side view of a tetrahydrofuran high pressure rectifying tower according to the present invention;
FIG. 3 is a cross-sectional top view of the tetrahydrofuran high pressure rectifying tower taken along line A-A in FIG. 2;
FIG. 4 is a diagram showing the overall structure of a tray I of a tetrahydrofuran high-pressure rectifying tower;
FIG. 5 is a schematic view showing the structure of a tray I of a tetrahydrofuran high-pressure rectifying tower according to the present invention;
FIG. 6 is a schematic diagram showing the structure of a tray II in the tetrahydrofuran high-pressure rectifying tower in operation;
FIG. 7 is an exploded view of a spiral gas outlet device of a tetrahydrofuran high-pressure rectifying tower according to the present invention;
FIG. 8 is a block diagram of a branching mechanism of a tetrahydrofuran high-pressure rectifying tower provided by the invention;
FIG. 9 is a perspective view of a tray I of a tetrahydrofuran high pressure rectifying tower according to the present invention;
fig. 10 is a schematic diagram of the structure of a tray-one operation of the high pressure tetrahydrofuran rectifying tower according to the present invention.
Wherein, the tower body of the 1-rectifying tower; 2-an air outlet pipe; 3-a return pipe; 4-a three-way pipe; 5-a one-way valve; 6-a conveying pipe; 7-a hydraulic pump; 8-an air inlet pipe; 9-a shunt mechanism; 901-a first bearing frame; 902-a driven gear; 903—driven paddle wheel; 904-an active paddle wheel; 905-a diverter plate; 906-a drive bevel gear; 907-bearing bracket II; 10-first tower plate; 11-a strip-shaped vent; 12-a gas hole cover; 13-a second tower plate; 14-leak holes; 15-an extraction tube; a 16-detector; 17-arc tube; 18-overflow dam; 19-a through hole; a 20-cap; 21-a sump; 22-diversion trenches; 23-U-shaped extension tube; 24-gear teeth; 25-baffle blocks; 26-gas baffle; 27-a baffle cover; 28-tension springs; 29-spring baffle; 30-U-shaped notch; 31-sliding blocks; 32-air outlet grooves; 33-a sealing gasket; 34-metal tube; 35-cutting; 36-sealing strips; 37-weep hole.
Detailed Description
The invention is further illustrated below in connection with specific examples, which are not to be construed as limiting the invention in any way.
Referring to fig. 1-10, a tetrahydrofuran high-pressure rectifying tower comprises a rectifying tower body 1 with a cylindrical structure formed by a cavity, wherein an adjustable supporting seat is arranged at the bottom of the rectifying tower body 1, a horizontal pipe is arranged on the surface of the rectifying tower body 1, and the whole rectifying tower body 1 is ensured to be in a vertical state through the horizontal pipe and the adjustable supporting seat; the upper end and the lower end of the rectifying tower body 1 are respectively reserved with an air outlet pipe 2 and a discharge pipe, the air outlet pipe 2 and the discharge pipe are respectively provided with a valve, wherein the air outlet pipe 2 is also provided with a safety valve, when the air pressure reaches a critical value, the pressure in the furnace is automatically released, the stability of the air pressure in the furnace is ensured, and the overall safety performance of the device is improved.
The circumference outer wall of the rectifying tower body 1 is provided with an air inlet pipe 8 near the bottom end, the circumference outer wall of the rectifying tower body 1 is inserted with a return pipe 3 near the top end, the circumference inner wall of the rectifying tower body 1 is provided with a plurality of mutually parallel column plates I10, the circumference outer wall of the column plate I10 is provided with a tangential plane 35, the edge of the upper surface of the tangential plane 35 is fixedly provided with an overflow dam 18, the column plate I10 is provided with a plurality of through holes 19 distributed in a staggered way, the upper surface of the column plate I10 is positioned above the through holes 19 and is provided with a spiral air outlet device, the spiral air outlet device comprises a metal pipe 34 fixed above the through holes 19, the top pipe orifice of the metal pipe 34 is higher than the overflow dam 18 in level, the top pipe orifice of the metal pipe 34 is connected with a sliding block 31 in a sliding way, the bottom end of the sliding block 31 is provided with three to five air outlet grooves 32 without circle centers, all the air outlet grooves 32 are arranged in a circumferential array, the top end of the sliding block 31 is fixedly provided with a cap 20 with a downward opening in a barrel-shaped structure, a gap is reserved between the circumferential inner wall of the cap 20 and the outer wall of the metal pipe 34, one side, far away from the overflow dam 18, of the upper surface of the first column plate 10 is provided with a liquid collecting groove 21, the cap 20 is suspended in the air and rotates on the outer wall of the metal pipe 34 after being jacked by gas, the cap 20 can be jacked under the action of the top of high-pressure gas from bottom to top through the arrangement of the air outlet grooves 32 which are arranged in the circumferential array, and the cap 20 can be kept suspended and rotated at the top of the metal pipe 34 under the action of tangential force, and at the moment, the gas can be continuously drilled out from the bottom end of the cap 20 and is contacted with liquid blocked by the overflow dam 18, so that the full contact between the gas and the liquid is improved, and the reaction efficiency is improved.
Referring to fig. 7, three to five U-shaped notches 30 are formed at the bottom edge of the cap 20, and U-shaped extension pipes 23 with downward openings and integrally formed in a U-shaped plate structure are fixed on the outer wall of the cap 20 at the U-shaped notches 30; through the arrangement of the U-shaped notch 30 and the U-shaped extension tube 23, the contact area between the gas and the liquid can be enlarged when the gas is drilled out at the bottom edge of the cap 20, and after the gas overflows from the U-shaped notch 30, the gas overflows from two sides of the U-shaped extension tube 23 with a longer length and then enters the liquid again, so that the reaction efficiency with the liquid is improved.
Referring to fig. 7, an annular groove is formed at the top end pipe orifice of the metal pipe 34, a sealing gasket 33 is clamped in the annular groove, the circumferential outer wall of the sliding block 31 and the inner wall of the metal pipe 34 form sliding fit, so that when no high-pressure gas is ejected from bottom to top, the cap 20 is tightly fastened at the top end of the metal pipe 34, and liquid is prevented from overflowing from the pipe orifice of the metal pipe 34; it is also ensured that the sliding closure 31 can be moved up normally with the cap 20 when there is a high pressure gas on top of it below.
Referring to fig. 3 and 5, a baffle 25 is fixed on the lower surface of each first tray 10 on the circumferential inner wall of the rectifying tower body 1, a sealing groove is formed on the circumferential outer wall of the first tray 10, a sealing strip 36 is clamped in the sealing groove, and the sealing strip 36 is arranged to prevent liquid from flowing to the lower part of the first tray 10 from a position other than the overflow dam 18.
Referring to fig. 5 and 10, a gas baffle 26 is fixed on the lower surface of the first tray 10 below the tangential plane 35, the cross section of the first tray 10 is totally enclosed by the gas baffle 26, a liquid leakage hole 37 is formed in the gas baffle 26, tension springs 28 are fixed on the lower surface of the gas baffle 26 at two ends of the liquid leakage hole 37, spring baffles 29 are fixed on the bottom ends of the two tension springs 28, a same baffle cover 27 is fixed between the two spring baffles 29, the baffle cover 27 keeps a close contact state with the lower surface of the gas baffle 26 when no object impacts on the top end of the baffle cover 27, so that gas is prevented from passing through the liquid leakage hole 37 from bottom to top, and when liquid overflowed from the overflow dam 18 is accumulated above the gas baffle 26 to reach a certain weight, the tension springs 28 break the tension of the baffle cover 27, and at this time, the liquid is discharged from the liquid leakage hole 37.
Referring to fig. 3 and 6, a second tray 13 with a potato chip structure is fixed between two adjacent first trays 10 on the circumferential inner wall of the rectifying tower body 1, a water flowing groove is reserved in the middle of the second tray 13, the two ends of the water flowing groove are not equal in height, a drain hole 14 is formed in the end part of the water flowing groove at the lower end of the second tray 13, and the drain hole 14 is positioned above a liquid collecting groove 21 of the next first tray 10; the upper surface of column plate two 13 is located the both sides of flowing water slot and all opens the bar level, and all opens bar air vent 11 in the centre of two bar levels, and the upper surface of column plate two 13 is located bar air vent 11's upper surface edge and articulates there is gas handhole door 12, and the articulated position of two gas handhole doors 12 all is located the one side of keeping away from flowing water slot, and two gas handhole doors 12 are symmetrical each other about flowing water slot, through setting up the pin joint of gas handhole door 12 in higher position, when can let gaseous from bottom to top, as far as with the liquid contact that flows down, improve reaction efficiency.
When the gas flow is large, the gas can burst through the gas hole cover 12 to ventilate when the gas leakage hole 14 is insufficient for the gas to pass through; and through the arrangement of the column plate II 13 with the running water groove in the middle and the leak hole 14 arranged at the end part of the lower end, the liquid flowing down from the column plate I10 can be concentrated and leaked from the leak hole 14 so as to generate larger impact force to collect and utilize the energy.
Referring to fig. 4 and 8, a diversion mechanism 9 is arranged above the liquid collecting tank 21, the diversion mechanism 9 comprises a first bearing frame 901 fixed in the middle of the upper surface of a first tower plate 10 and close to the liquid collecting tank 21, a vertical transmission shaft is rotatably connected in the middle of the top of the first bearing frame 901, a driving paddle wheel 904 and a driving bevel gear 906 are respectively fixed at the upper end and the lower end of the transmission shaft, a second bearing frame 907 is fixed at the bottom of the liquid collecting tank 21 and positioned at the two sides of the driving bevel gear 906, a transmission rod which is horizontally arranged is arranged between the two second bearing frames 907, a driven paddle wheel 903 and a driven gear 902 are respectively fixed at the two ends of the transmission rod, the driven gear 902 and the driving bevel gear 906 are meshed with each other, a diversion plate 905 with the same cross section in an eight-shaped structure is arranged at the two sides of the first bearing frame 901, and the driving paddle wheel 904 is positioned below a leak 14; the upper surface of the first tower plate 10 is provided with two diversion trenches 22 which are in an S-shaped structure and are communicated with the liquid collecting tank 21; the liquid from the top can mostly impinge on the active paddle wheel 904 and by the arrangement of the diverting mechanism 9 the kinetic energy of the liquid falling from above can be converted into a local circulation pushing of the liquid in the sump 21, which in turn can increase the internal circulation of the liquid intercepted in the overflow weir 18.
Referring to fig. 1, one end of a return pipe 3 far away from a rectifying tower body 1 is communicated with a three-way pipe 4, a side branch pipe of the three-way pipe 4 is communicated with a one-way valve 5, a liquid inlet end of the one-way valve 5 is communicated with a conveying pipe 6, one end of the conveying pipe 6 far away from the three-way pipe 4 is provided with a hydraulic pump 7, a liquid inlet of the hydraulic pump 7 is communicated with a liquid suction pipe 15, one end pipe orifice of the liquid suction pipe 15 far away from the hydraulic pump 7 is inserted into the rectifying tower body 1 and is close to the bottom, the bottom of the rectifying tower body 1 is provided with a detector 16, a signal output end of the detector 16 is connected with a controller through a signal wire, and the signal output end of the controller is connected with a motor control switch of the hydraulic pump 7 through the signal wire; by the arrangement of the detector 16 and the hydraulic pump 7, purity can be detected in time when liquid after reaction with gas flows to the bottom during reaction, and if the purity does not reach the standard, the hydraulic pump 7 is started to continuously extract the liquid and then enter the return pipe 3; wherein the detector 16 further comprises a liquid level sensor, and can detect that the liquid on the first tower plate 10 of all layers is full when the liquid is filled for the first time, the redundant liquid can flow into the bottom, and the filling is stopped when the liquid level sensor is reached, and the hydraulic pump 7 is started to circulate.
Referring to fig. 3, the top pipe orifice of the discharge pipe is at least ten centimeters higher than the inner bottom of the rectifying tower body 1, and one end of the arc pipe 17, which is far away from the air inlet pipe 8, is provided with an upturned structure, so that high-pressure gas can be directly introduced into the lower surface of the bottommost column plate 10 during air inlet, and the reaction efficiency is improved; and the discharge pipe can block a part of sediment at the bottom of the rectifying tower body 1.
Referring to fig. 4-5, a plurality of equally spaced teeth 24 are fixed to the top of the overflow dam 18 to block the liquid flowing out from the overflow dam 18 when the liquid after reaction generates floats or foams during use, so that the overflowed liquid contains no or little impurities and the risk of blockage is reduced.
When the device is used, firstly, liquid is introduced into the return pipe 3 from the main pipeline of the three-way pipe 4 and then flows into the top end of the rectifying tower body 1, and at the moment, the liquid is continuously filled into the overflow dam 18 of each layer until the detector 16 at the bottom detects that the liquid flows to the bottom and the position of the detector 16 is submerged, namely liquid filling is stopped; then, gas is introduced from an air inlet pipe 8 which is laterally close to the bottom end, and is directly introduced into the lower surface of the bottommost column plate I10 through an arc-shaped pipe 17; at this time, the gas is pushed against the lower surface of the sliding block 31 through the through holes 19, and the cap 20 is jacked up under the action of the pushing of high-pressure gas from bottom to top through the arrangement of the plurality of gas outlet grooves 32 which are arranged in a circumferential array and are not at the center of the circle, and the cap 20 can be kept suspended and rotated at the top end of the metal pipe 34 under the action of tangential force, so that the gas can be continuously drilled from the bottom end of the cap 20 and contacted with the liquid blocked by the overflow dam 18, thereby improving the full contact of the gas and the liquid and improving the reaction efficiency; then, through the arrangement of the U-shaped notch 30 and the U-shaped extension pipe 23, the contact area between the gas and the liquid is enlarged when the gas is drilled out at the bottom edge of the cap 20, and the reaction efficiency with the liquid is improved.
Meanwhile, if liquid continues to be injected from the return pipe 3, namely, when the overflowed liquid on the overflow dam 18 is accumulated above the gas baffle 26 to reach a certain weight, the pull force of the two tension springs 28 to the baffle cover 27 is broken, at the moment, the liquid is discharged from the liquid leakage holes 37 and leaks to the tray two 13 below, and then flows to the diversion mechanism 9 of the tray one 10 below through the middle water flowing groove, kinetic energy of falling liquid from above is converted into local circulation of the liquid in the liquid collecting groove 21 to push the liquid, and then the internal circulation of the liquid intercepted in the overflow dam 18 can be increased; by means of the arrangement of the detector 16 and the hydraulic pump 7, purity can be detected in time when liquid after reaction with gas flows to the bottom during reaction, and if the purity does not reach the standard, the hydraulic pump 7 is started to continuously pump the liquid and then enter the return pipe 3.
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (9)
1. The utility model provides a tetrahydrofuran high pressure rectifying column, includes establishes the whole rectifying column body (1) that is cylindrical structure of cavity in the interior, upper and lower both ends of rectifying column body (1) are reserved respectively and are had outlet duct (2) and row material pipe, and the circumference outer wall of rectifying column body (1) is close to the bottom and is provided with intake pipe (8), and the circumference outer wall of rectifying column body (1) is close to the top and peg graft and have back flow (3), characterized in that, the circumference inner wall of rectifying column body (1) is provided with a plurality of tray one (10) that are parallel to each other, and the circumference outer wall of tray one (10) is opened has tangent plane (35), and the upper surface edge of tangent plane (35) is fixed with overflow dam (18), opens on tray one (10) has a plurality of through-holes (19) of staggered distribution, and the upper surface of tray one (10) is provided with spiral air outlet device in the top of through-hole (19), and spiral air device is including fixing metal pipe (34) in the through-hole (19) top, and the top of metal pipe (34) is higher than the height of overflow dam (18) and high overflow dam (31) and the top end of a tube (31) is connected with the top of a plurality of sliding block (31) and is provided with the top of the sliding block (31) and is provided with the top of a closure structure (31), a gap is reserved between the circumferential inner wall of the cap (20) and the outer wall of the metal pipe (34), and a liquid collecting tank (21) is arranged on one side of the upper surface of the first tower plate (10) far away from the overflow dam (18);
the lower surface of column plate one (10) is located the below of tangent plane (35) and is fixed with gas baffle (26), and gas baffle (26) are with column plate one (10) place cross-section totally closed, and open on gas baffle (26) have weeping hole (37), the lower surface of gas baffle (26) is located the both ends of weeping hole (37) all are fixed with extension spring (28), and the bottom of two extension springs (28) all is fixed with spring baffle (29), be fixed with same shield lid (27) between two spring baffles (29), shield lid (27) keep with gas baffle (26) lower surface state of hugging closely when its top does not have the object impact.
2. The tetrahydrofuran high-pressure rectifying tower according to claim 1, wherein three U-shaped notches (30) are formed at the bottom edge of the cap (20), and U-shaped extension pipes (23) with downward openings and integrally formed into a U-shaped plate structure are fixed at the positions of the U-shaped notches (30) on the outer wall of the cap (20).
3. The tetrahydrofuran high-pressure rectifying tower according to claim 2, wherein an annular groove is formed at the top pipe orifice of the metal pipe (34), a sealing gasket (33) is clamped in the annular groove, and the circumferential outer wall of the sliding block (31) is in sliding fit with the inner wall of the metal pipe (34).
4. The tetrahydrofuran high-pressure rectifying tower according to claim 1, wherein a baffle block (25) is fixed on the lower surface of each first tray (10) on the inner circumferential wall of the rectifying tower body (1), a sealing groove is formed on the outer circumferential wall of the first tray (10), and a sealing strip (36) is clamped in the sealing groove.
5. The tetrahydrofuran high-pressure rectifying tower according to claim 1, wherein a column plate two (13) with a 'potato chip' shaped structure is fixed between two adjacent column plates one (10) on the circumferential inner wall of the rectifying tower body (1), a water flowing groove is reserved in the middle of the column plate two (13), two ends of the water flowing groove are not equal in height, a drain hole (14) is formed in the end portion of the water flowing groove at the lower end of the column plate two (13), the drain hole (14) is located above a liquid collecting groove (21) of the next column plate one (10), strip-shaped planes are formed in the upper surface of the column plate two (13) on two sides of the water flowing groove, strip-shaped vent holes (11) are formed in the middle of the two strip-shaped planes, the upper surface of the column plate two (13) is hinged with a vent hole cover (12) on the edge of the upper surface of the strip-shaped vent holes (11), the hinge positions of the two vent hole covers (12) are located on one side far away from the water flowing groove, and the two vent covers (12) are symmetrical with respect to the water flowing groove.
6. The tetrahydrofuran high-pressure rectifying tower according to claim 5, wherein a diversion mechanism (9) is arranged above the liquid collecting groove (21), the diversion mechanism (9) comprises a first bearing frame (901) fixed at the middle part of the upper surface of the first tower plate (10) and close to the liquid collecting groove (21), a vertical transmission shaft is rotatably connected to the middle of the top of the first bearing frame (901), a driving paddle wheel (904) and a driving conical gear (906) are respectively fixed at the upper end and the lower end of the transmission shaft, a second bearing frame (907) is fixed at the bottom of the liquid collecting groove (21) at two sides of the driving conical gear (906), a transmission rod which is horizontally arranged is arranged between the two second bearing frames (907), a driven paddle wheel (903) and the driven gear (902) are respectively fixed at two ends of the transmission rod, the driven gear (902) and the driving conical gear (906) are meshed with each other, a diversion plate (905) with the same cross section in an eight-shaped structure is arranged at two sides of the first bearing frame (901), and the driving paddle wheel (904) is arranged below the drain hole (14); the upper surface of the first tower plate (10) is provided with two diversion trenches (22) which are in an S-shaped structure and are mutually communicated with the liquid collecting trench (21).
7. The tetrahydrofuran high-pressure rectifying tower according to claim 1, wherein one end of the reflux pipe (3) far away from the rectifying tower body (1) is communicated with a three-way pipe (4), a side branch pipe of the three-way pipe (4) is communicated with a one-way valve (5), a liquid inlet end of the one-way valve (5) is communicated with a conveying pipe (6), one end of the conveying pipe (6) far away from the three-way pipe (4) is provided with a hydraulic pump (7), a liquid inlet of the hydraulic pump (7) is communicated with a liquid suction pipe (15), one end pipe orifice of the liquid suction pipe (15) far away from the hydraulic pump (7) is inserted into the rectifying tower body (1) and is close to the bottom, a detector (16) is arranged at the bottom of the rectifying tower body (1), a signal output end of the detector (16) is connected with a controller through a signal wire, and the signal output end of the controller is connected with a motor control switch of the hydraulic pump (7) through the signal wire.
8. The tetrahydrofuran high-pressure rectifying tower according to claim 7, wherein the top pipe orifice of the discharging pipe is at least ten centimeters higher than the inner bottom of the rectifying tower body (1), and one end of the arc-shaped pipe (17) far away from the air inlet pipe (8) is in an upturned structure.
9. A tetrahydrofuran high pressure rectifying column according to claim 1, characterized in that the top end of the overflow dam (18) is fixed with a plurality of equally distributed blocking teeth (24).
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| CN202211099755.2A CN115888154B (en) | 2022-09-09 | 2022-09-09 | Tetrahydrofuran high pressure rectifying column |
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| CN202211099755.2A CN115888154B (en) | 2022-09-09 | 2022-09-09 | Tetrahydrofuran high pressure rectifying column |
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| CN115888154B true CN115888154B (en) | 2023-09-05 |
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| CN116459547B (en) * | 2023-06-08 | 2023-08-22 | 云南全控机电有限公司 | Material reflux type continuous rectifying furnace |
| CN116712746A (en) * | 2023-08-07 | 2023-09-08 | 潍坊中汇化工有限公司 | Gas-liquid contact dispersion structure for high-purity methanol rectifying tower production |
| CN117654090B (en) * | 2023-12-18 | 2024-05-24 | 山东德宜新材料有限公司 | Separation equipment for vinylidene fluoride preparation |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB803711A (en) * | 1956-02-10 | 1958-10-29 | Koch Eng Co Inc | Improvements in or relating to a gas-liquid contact apparatus |
| US4146950A (en) * | 1976-08-06 | 1979-04-03 | Texaco Inc. | Methods for forming bubble cap assemblies for a gas and liquid contact apparatus |
| GB8322008D0 (en) * | 1983-08-16 | 1983-09-21 | Shell Int Research | Gas/liquid contact apparatus |
| JP2000202203A (en) * | 1999-01-14 | 2000-07-25 | Ishikawajima Harima Heavy Ind Co Ltd | Shelving structure of gas-liquid contactor |
| US6193222B1 (en) * | 1998-09-18 | 2001-02-27 | Zhongliang Fan | Gas-liquid contact tray and method |
| DE102006026726A1 (en) * | 2006-05-23 | 2007-11-29 | Linde Ag | Distillation or gas washer column has central fluid reservoir that is essentially a circular overflow weir located on top of an inner cover |
| JP2012016678A (en) * | 2010-07-09 | 2012-01-26 | Ihi Corp | Plate column |
| RU2484876C1 (en) * | 2012-03-11 | 2013-06-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный технологический университет" (СибГТУ) | Vortex contact stage for contacting gas or vapor with fluid |
| CN104415568A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Horizontal-fluctuation blocking method of gas and liquid of multi-overflow tower and multi-overflow tower |
| CN104755144A (en) * | 2013-06-24 | 2015-07-01 | 尤利乌斯蒙茨有限公司 | Mass transfer tray |
| CN111744225A (en) * | 2020-07-24 | 2020-10-09 | 邓健 | Plate-type packing rectifying tower |
| CN111870985A (en) * | 2020-08-05 | 2020-11-03 | 杨忠寸 | Plate type fractionating tower |
| CN111921216A (en) * | 2020-07-29 | 2020-11-13 | 周民主 | Light component removal rectifying tower |
| CN215916498U (en) * | 2021-10-25 | 2022-03-01 | 淄博众泰环保科技有限公司 | Crude oil purification stripping tower |
| CN114522437A (en) * | 2022-03-17 | 2022-05-24 | 宿迁市盈科新材料有限公司 | Tetrahydrofuran pressurization purification rectifying tower |
-
2022
- 2022-09-09 CN CN202211099755.2A patent/CN115888154B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB803711A (en) * | 1956-02-10 | 1958-10-29 | Koch Eng Co Inc | Improvements in or relating to a gas-liquid contact apparatus |
| US4146950A (en) * | 1976-08-06 | 1979-04-03 | Texaco Inc. | Methods for forming bubble cap assemblies for a gas and liquid contact apparatus |
| GB8322008D0 (en) * | 1983-08-16 | 1983-09-21 | Shell Int Research | Gas/liquid contact apparatus |
| US6193222B1 (en) * | 1998-09-18 | 2001-02-27 | Zhongliang Fan | Gas-liquid contact tray and method |
| JP2000202203A (en) * | 1999-01-14 | 2000-07-25 | Ishikawajima Harima Heavy Ind Co Ltd | Shelving structure of gas-liquid contactor |
| DE102006026726A1 (en) * | 2006-05-23 | 2007-11-29 | Linde Ag | Distillation or gas washer column has central fluid reservoir that is essentially a circular overflow weir located on top of an inner cover |
| JP2012016678A (en) * | 2010-07-09 | 2012-01-26 | Ihi Corp | Plate column |
| RU2484876C1 (en) * | 2012-03-11 | 2013-06-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный технологический университет" (СибГТУ) | Vortex contact stage for contacting gas or vapor with fluid |
| CN104755144A (en) * | 2013-06-24 | 2015-07-01 | 尤利乌斯蒙茨有限公司 | Mass transfer tray |
| CN104415568A (en) * | 2013-08-30 | 2015-03-18 | 中国石油天然气股份有限公司 | Horizontal-fluctuation blocking method of gas and liquid of multi-overflow tower and multi-overflow tower |
| CN111744225A (en) * | 2020-07-24 | 2020-10-09 | 邓健 | Plate-type packing rectifying tower |
| CN111921216A (en) * | 2020-07-29 | 2020-11-13 | 周民主 | Light component removal rectifying tower |
| CN111870985A (en) * | 2020-08-05 | 2020-11-03 | 杨忠寸 | Plate type fractionating tower |
| CN215916498U (en) * | 2021-10-25 | 2022-03-01 | 淄博众泰环保科技有限公司 | Crude oil purification stripping tower |
| CN114522437A (en) * | 2022-03-17 | 2022-05-24 | 宿迁市盈科新材料有限公司 | Tetrahydrofuran pressurization purification rectifying tower |
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