CN117249714A - Tail gas recycling device based on benzene hydrogenation technology - Google Patents
Tail gas recycling device based on benzene hydrogenation technology Download PDFInfo
- Publication number
- CN117249714A CN117249714A CN202311540436.5A CN202311540436A CN117249714A CN 117249714 A CN117249714 A CN 117249714A CN 202311540436 A CN202311540436 A CN 202311540436A CN 117249714 A CN117249714 A CN 117249714A
- Authority
- CN
- China
- Prior art keywords
- shell
- auger
- tail gas
- benzene hydrogenation
- gas recycling
- Prior art date
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- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 title claims abstract description 99
- 238000005984 hydrogenation reaction Methods 0.000 title claims abstract description 29
- 238000004064 recycling Methods 0.000 title claims abstract description 26
- 238000005516 engineering process Methods 0.000 title claims description 4
- 239000007788 liquid Substances 0.000 claims description 68
- 238000001179 sorption measurement Methods 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 15
- 238000007906 compression Methods 0.000 claims description 15
- 230000000903 blocking effect Effects 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 9
- 238000007790 scraping Methods 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 24
- 239000001257 hydrogen Substances 0.000 abstract description 22
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 22
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 21
- 238000000034 method Methods 0.000 abstract description 12
- 230000017525 heat dissipation Effects 0.000 abstract description 7
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 49
- 239000002245 particle Substances 0.000 description 22
- 238000003860 storage Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000013618 particulate matter Substances 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 4
- 238000012856 packing Methods 0.000 description 4
- 239000012535 impurity Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000010009 beating Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 238000013022 venting Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D21/0001—Recuperative heat exchangers
- F28D21/0003—Recuperative heat exchangers the heat being recuperated from exhaust gases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0052—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation
- B01D46/0056—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with filtering elements moving during filtering operation with rotational movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/42—Auxiliary equipment or operation thereof
- B01D46/48—Removing dust other than cleaning filters, e.g. by using collecting trays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/76—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving vibrations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/74—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element
- B01D46/78—Regeneration of the filtering material or filter elements inside the filter by forces created by movement of the filter element involving centrifugal forces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F17/00—Removing ice or water from heat-exchange apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G3/00—Rotary appliances
- F28G3/10—Rotary appliances having scrapers, hammers, or cutters, e.g. rigidly mounted
Abstract
The invention relates to the technical field of benzene hydrogenation processes, in particular to a tail gas recycling device based on a benzene hydrogenation process. In the prior art, high-temperature hydrogen flowing in the air outlet pipe cannot be heated by steam flowing in the steam pipe, so that the high-temperature hydrogen flowing in the air outlet pipe is too fast in heat dissipation and high in heat energy loss. The technical proposal is as follows: a tail gas recycling device based on a benzene hydrogenation process comprises a shell, a conveying pipe and the like; the inside of the shell is rotationally connected with a conveying pipe; the upper part of the shell is provided with a plurality of air inlets; the lower part of the shell is provided with a plurality of first air outlets; the conveying pipe is provided with an upper opening and a lower opening. According to the invention, the heat conduction framework on the auger winds and conveys the conveying pipe and the auger blocks gas, so that the heat energy loss of high-temperature hydrogen in the conveying pipe in the conveying process is reduced to the minimum, and the problem that the subsequent reaction with benzene is influenced due to faster heat dissipation in the high-temperature hydrogen conveying process is avoided.
Description
Technical Field
The invention relates to the technical field of benzene hydrogenation processes, in particular to a tail gas recycling device based on a benzene hydrogenation process.
Background
The prior Chinese patent: a stabilizer tail gas treatment mode (CN 114405045A); the device carries out winding and conveying on the air outlet pipe through the steam pipe, so that the heat energy loss of high-temperature hydrogen in the air outlet pipe in the conveying process is reduced to the minimum, and the problem that the subsequent reaction with benzene is influenced due to quicker heat dissipation in the high-temperature hydrogen conveying process is avoided;
however, in the above-mentioned device, the flow rates of the steam flowing in the steam pipe (obtained by burning the tail gas generated by the benzene hydrogenation process and the hydrogen which cannot be liquefied) and the high-temperature hydrogen flowing in the air outlet pipe are not controlled, the flow rate is too fast, the contact time between the steam and the high-temperature hydrogen is too short, the high-temperature hydrogen flowing in the air outlet pipe cannot be heated by the steam flowing in the steam pipe, so that the heat dissipation of the high-temperature hydrogen flowing in the air outlet pipe is too fast, and the heat energy loss is high.
Disclosure of Invention
In order to overcome the defects of the prior art that the high-temperature hydrogen flowing in the air outlet pipe cannot be heated by the water vapor flowing in the vapor pipe, so that the high-temperature hydrogen flowing in the air outlet pipe is too fast in heat dissipation and high in heat energy loss, the invention provides a tail gas recycling device based on a benzene hydrogenation process.
The technical proposal is as follows: a tail gas recycling device based on a benzene hydrogenation process comprises a shell and a conveying pipe; the inside of the shell is rotationally connected with a conveying pipe; the upper part of the shell is provided with a plurality of air inlets; the lower part of the shell is provided with a plurality of first air outlets; the conveying pipe is provided with an upper opening and a lower opening; the device also comprises a packing auger and a driving motor; a packing auger is arranged in the conveying pipe; the blades of the auger are arranged into a net structure, and the outer edge of the auger is contacted with the inner wall of the shell; the shell is provided with a driving motor, and an output shaft of the driving motor is fixedly connected with the conveying pipe.
Preferably, the first air outlet has a smaller diameter than the air inlet.
Preferably, the auger is provided with a thermally conductive skeleton.
Preferably, the device also comprises a liquid discharge pipe, a connecting rod and a plugging disc; the shell is communicated with a plurality of liquid discharge pipes; a connecting rod is arranged in the liquid discharge pipe; the connecting rod is arranged as an electric push rod structure; the expansion part of the connecting rod is fixedly connected with a blocking disc, and the blocking disc divides the liquid discharge pipe into a first liquid discharge port and a second liquid discharge port; the diameter of the plugging disc is smaller than that of the first liquid outlet, and the diameter of the plugging disc is larger than that of the second liquid outlet.
Preferably, the plugging disc is arranged to be a buoyancy block, the connecting rod is arranged to be of a telescopic rod structure, and the telescopic part of the connecting rod can stretch and retract along with lifting of the plugging disc.
Preferably, a scraping strip is also included; the outer edge of auger is provided with a plurality of scraping strips that are annular array distribution.
Preferably, the device also comprises an arc-shaped plate; the shell is detachably connected with a plurality of arc plates; the inner cambered surface of the cambered plate is provided with an adsorption layer; the arc-shaped plate is fixedly connected with a handle.
Preferably, the device also comprises an auxiliary cleaning unit, wherein the auxiliary cleaning unit comprises an annular guide rail, a moving block, a spring telescopic rod and a compression roller; the inner top surface of the shell is provided with an annular guide rail; the annular guide rail is connected with a plurality of moving blocks in a sliding way; each moving block is provided with a spring telescopic rod; each spring telescopic rod is provided with a pressing roller.
Preferably, the press roller is provided in a cone-shaped structure having a large lower side and a small upper side.
Preferably, a plurality of salient points are arranged on the edge of the upper surface of the auger.
The beneficial effects of the invention are as follows: according to the invention, the heat conduction framework on the auger winds and conveys the conveying pipe and the auger blocks gas, so that the heat energy loss of high-temperature hydrogen in the conveying pipe in the conveying process is reduced to the minimum, and the problem that the subsequent reaction with benzene is influenced due to faster heat dissipation in the high-temperature hydrogen conveying process is avoided.
The diameter of the first air outlet is smaller, so that the speed of the water vapor discharged from the first air outlet is slowed down, the water vapor can stay in the shell for a longer time, and meanwhile, the water vapor discharged into the shell from the air inlet is more than the water vapor discharged from the first air outlet, so that the inside of the shell is in a high-pressure state, and a better heating effect is achieved.
When the liquid level in the liquid storage cavity rises, the liquid level can drive the blocking disc to float upwards, so that the first liquid outlet and the second liquid outlet are communicated, and when the liquid level descends, the blocking disc can move downwards, so that the first liquid outlet and the second liquid outlet are blocked, water vapor can be prevented from leaking out from the first liquid outlet and the second liquid outlet, and the self-adaptive liquid discharging function can be realized.
When the auger rotates, the intercepted impurities are upwards conveyed, and along with the rotation of the auger, particles on the auger blade can be thrown to the edge of the auger blade under the action of centrifugal force, so that the particles are contacted with the adsorption layer of the arc-shaped plate and adsorbed by the adsorption layer of the arc-shaped plate, and when the particles are adsorbed to a certain amount, the arc-shaped plate is pulled out through a handle on the arc-shaped plate, and the adsorption layer is cleaned.
When auger blade rotates, control movable block drives spring telescopic link and compression roller and is opposite direction slip with the auger on annular guide rail, so, alright press down the particulate matter on to the adsorbed layer through the compression roller of cone-shaped, simultaneously, for big-end-up's cone-shaped structure down through the compression roller, make the compression roller can be with the particulate matter that is located the adsorbed layer lower part to the upper portion guide of adsorbed layer, make particulate matter evenly distributed on the adsorbed layer, improve the utilization ratio of adsorbed layer, reduce the clearance frequency.
When the auger rotates, the bottom surface of the compression roller can be in intermittent contact with a plurality of salient points, so that the telescopic part of the spring telescopic rod and the compression roller repeatedly stretch, a downward beating force is applied to the auger, the auger is vibrated, particles on meshes of the auger blade can be vibrated out, the particles can be thrown out to the auger Long Bianyuan by centrifugal force, and the particles are prevented from being clamped in the meshes of the auger blade.
Drawings
FIG. 1 is a schematic diagram of a tail gas recycling apparatus based on a benzene hydrogenation process according to the present invention;
FIG. 2 is a cross-sectional view of a housing disclosed in the benzene hydrogenation process-based tail gas recycling apparatus of the present invention;
FIG. 3 is a cross-sectional view of a transfer pipe disclosed in the tail gas recycling apparatus based on the benzene hydrogenation process of the present invention;
FIG. 4 is a schematic diagram of the structure of the auger disclosed by the tail gas recycling device based on the benzene hydrogenation process;
FIG. 5 is a schematic diagram of the structure of an exhaust pipe disclosed by the tail gas recycling device based on the benzene hydrogenation process;
FIG. 6 is a schematic diagram of the structure of an arc plate disclosed by the tail gas recycling device based on the benzene hydrogenation process;
fig. 7 is a schematic diagram of a combined structure of an arc plate, an annular guide rail, a moving block, a second connecting rod and a compression roller, which are disclosed by the tail gas recycling device based on the benzene hydrogenation process.
Reference numerals illustrate: the heat conduction framework comprises a 1-shell, a 2-conveying pipe, a 3-liquid discharge pipe, a 4-auger, a 5-driving motor, a 6-scraping strip, a 7-connecting rod, an 8-sealing disc, a 101-arc-shaped plate, a 102-annular guide rail, a 103-moving block, a 104-spring telescopic rod, a 105-press roller, a 1 a-air inlet, a 1 b-first air outlet, a 3 b-first liquid discharge port, a 3 c-second liquid discharge port and a 4 a-heat conduction framework.
Detailed Description
The following description is of the preferred embodiments of the invention, and is not intended to limit the scope of the invention.
Example 1
The tail gas recycling device based on the benzene hydrogenation technology, as shown in figures 1-7, comprises a shell 1 and a conveying pipe 2; the inside of the shell 1 is rotationally connected with a conveying pipe 2; at least two air inlets 1a are arranged at the upper part of the shell 1; at least two first air outlets 1b are arranged at the lower part of the shell 1; the conveying pipe 2 is arranged with an upper opening and a lower opening;
the device also comprises a packing auger 4 and a driving motor 5; an auger 4 is arranged in the conveying pipe 2; the blades of the auger 4 are arranged into a net structure, and the outer edge of the auger 4 is contacted with the inner wall of the shell 1; the shell 1 is provided with a driving motor 5, and an output shaft of the driving motor 5 is fixedly connected with the conveying pipe 2.
The diameter of the first air outlet 1b is smaller than that of the air inlet 1a, so that the speed of water vapor discharged from the first air outlet 1b is slowed down, and the water vapor can stay in the shell 1 for a longer time.
The packing auger 4 is provided with a heat-conducting skeleton 4a, and heat contained in the water vapor is conducted to the heat-conducting skeleton 4a between the casing 1 and the conveying pipe 2, and is conducted from the heat-conducting skeleton 4a between the casing 1 and the conveying pipe 2 to the heat-conducting skeleton 4a inside the conveying pipe 2.
The tail gas recycling work of the invention is as follows:
firstly, water vapor is input into the shell 1 from the air inlet 1a, so that the water vapor passes through the interior of the shell 1 and is discharged from the first air outlet 1b; at the same time, high-temperature hydrogen is input into the conveying pipe 2 from the upper opening of the conveying pipe 2, so that the high-temperature hydrogen passes through the inside of the conveying pipe 2 and is discharged from the lower opening of the conveying pipe 2; in the above process, the heat contained in the steam in the shell 1 is conducted to the heat conducting framework 4a between the shell 1 and the conveying pipe 2, and is conducted from the heat conducting framework 4a between the shell 1 and the conveying pipe 2 to the heat conducting framework 4a inside the conveying pipe 2, so that the high-temperature hydrogen passing through the conveying pipe 2 is heated, and the purpose of heating is achieved.
Meanwhile, the output shaft of the driving motor 5 is controlled to drive the conveying pipe 2 and the auger 4 to rotate clockwise from the top down, so that the gas passing through the shell 1 and the conveying pipe 2 is blocked, the downward circulation speed of the gas is slowed down, a better heat transfer effect is achieved, and the heating effect of hydrogen in the conveying pipe 2 is improved; therefore, the heat conduction framework 4a on the auger 4 is used for winding and conveying the conveying pipe 2, and the auger 4 is used for blocking gas, so that the heat energy loss of high-temperature hydrogen in the conveying pipe 2 in the conveying process is reduced to the minimum, and the problem that the heat dissipation is faster in the conveying process of the high-temperature hydrogen, so that the subsequent reaction with benzene is influenced is avoided.
Further, since the diameter of the first air outlet 1b is smaller, the speed of the water vapor discharged from the first air outlet 1b is slowed down, so that the water vapor can stay in the housing 1 for a longer time, and meanwhile, since the water vapor discharged into the housing 1 from the air inlet 1a is more than the water vapor discharged from the first air outlet 1b, the inside of the housing 1 is in a high-pressure state, thereby achieving a better heating effect.
Example 2
On the basis of the embodiment 1, as shown in fig. 1-5, the device also comprises a liquid discharge pipe 3, a connecting rod 7 and a plugging disc 8; the shell 1 is communicated with at least one liquid discharge pipe 3; a connecting rod 7 is arranged in the liquid discharge pipe 3; the connecting rod 7 is arranged as an electric push rod structure; the expansion part of the connecting rod 7 is fixedly connected with a plugging disc 8, and the plugging disc 8 divides the liquid discharge pipe 3 into a first liquid discharge port 3b and a second liquid discharge port 3c; the diameter of the plugging disc 8 is smaller than that of the first liquid outlet 3b, and the diameter of the plugging disc 8 is larger than that of the second liquid outlet 3 c.
The shutoff dish 8 sets up to the buoyancy piece, and connecting rod 7 sets up to the telescopic link structure, and the flexible portion of connecting rod 7 can stretch out and draw back along with the lift of shutoff dish 8.
The scraper bar 6 is also included; the outer edge of auger 4 is provided with at least three scraping strips 6 that are annular array distribution, scrapes down the drop of water of casing 1 inner wall through scraping strip 6.
When the water vapor circulates in the shell 1, the water vapor is liquefied into water droplets in the shell 1, the water droplets are discharged from the first air outlet 1b together with the water vapor, and when the number of the water droplets discharged from the first air outlet 1b is increased, the space of the first air outlet 1b is occupied, the normal circulation of the water vapor is influenced, and the first air outlet 1b is blocked;
however, because the inside of the casing 1 is in a high-pressure state, when the water vapor is discharged from the first air outlet 1b, a certain pushing effect can be achieved on the water droplets, so that the water droplets in the first air outlet 1b are quickly flushed out, the discharge speed of the water droplets is increased, and the problem of blockage of the first air outlet 1b is avoided.
In the process of discharging the water droplets from the first air outlet 1b, although the water vapor can play a certain role in pushing, when water droplets are converged to form water flow, the water flow is continuously discharged from the first air outlet 1b, so that the first air outlet 1b is in a sealed state, the water vapor in the shell 1 cannot be discharged, the air inlet 1a is continuously fed with the water vapor, the air pressure in the shell 1 is continuously increased, the shell 1 is deformed under the action of the air pressure, and the service life of the shell 1 is influenced, therefore, the water droplets are required to be singly discharged;
firstly, controlling the telescopic part of the connecting rod 7 to drive the plugging disc 8 to move downwards to plug the second liquid outlet 3c, so that the first liquid outlet 3b and the plugging disc 8 form a liquid storage cavity together;
in the case of conventional venting, in which non-liquefied water vapor is drawn from the first outlet 1b; the liquefied water vapor is condensed downwards into the liquid storage cavity under the influence of gravity, when the liquid in the liquid storage cavity reaches a certain amount, the telescopic part of the control connecting rod 7 drives the plugging disc 8 to move upwards, so that the first liquid outlet 3b and the second liquid outlet 3c are communicated, the liquid in the liquid storage cavity is discharged, and the first air outlet 1b is prevented from being blocked;
however, in the above manner, in order to avoid the gas from leaking out of the first liquid outlet 3b and the second liquid outlet 3c, the second liquid outlet 3c needs to be blocked before the water drops in the liquid storage cavity are not completely discharged, so that a large amount of water drops can remain in the liquid storage cavity, a large amount of water drops can be gathered in a short time, the expansion and contraction part of the connecting rod 7 needs to be frequently controlled to drive the blocking disc 8 to lift so as to discharge the liquid, and the blocking disc 8 frequently lifts and lifts, friction is generated between the blocking disc 8 and the second liquid outlet 3c, so that abrasion occurs between the blocking disc 8 and the second liquid outlet 3c, and the blocking effect of the blocking disc 8 is affected;
therefore, when the liquid level in the liquid storage cavity rises, the liquid level drives the telescopic parts of the sealing disc 8 and the connecting rod 7 to float upwards so that the first liquid outlet 3b and the second liquid outlet 3c are communicated, and when the liquid level descends, the telescopic parts of the sealing disc 8 and the connecting rod 7 also move downwards so that the first liquid outlet 3b and the second liquid outlet 3c are sealed, so that water vapor can be prevented from leaking from the first liquid outlet 3b and the second liquid outlet 3c, and the self-adaptive liquid draining function can be realized; moreover, as the telescopic part of the connecting rod 7 is connected with the plugging disc 8, the movement track of the plugging disc 8 is prevented from being deviated, and the plugging effect is prevented from being influenced.
It should be noted that, the water vapor will liquefy into water droplets on the inner wall of the housing 1, a large amount of water droplets will be formed for a long time, and the water droplets will absorb the water vapor, so that the water vapor is liquefied rapidly, and the normal working process is affected, therefore, the scraping strip 6 will be driven to rotate synchronously when the auger 4 rotates, so that the water droplets on the inner wall of the housing 1 are scraped and gathered into the liquid storage cavity along the inner wall of the housing 1.
Example 3
On the basis of the embodiment 2, as shown in fig. 4, 6 and 7, an arc-shaped plate 101 is further included; the shell 1 is detachably connected with at least two arc plates 101; the inner cambered surface of the cambered plate 101 is provided with an adsorption layer; the arc plate 101 is connected with a handle through the adsorption layer of the inner cambered surface of the arc plate 101 to adsorb impurities.
The device also comprises an auxiliary cleaning unit, wherein the auxiliary cleaning unit comprises an annular guide rail 102, a moving block 103, a spring telescopic rod 104 and a compression roller 105; the inner top surface of the shell 1 is provided with an annular guide rail 102; the annular guide rail 102 is connected with at least four moving blocks 103 in a sliding manner; each moving block 103 is provided with a spring telescopic rod 104; each spring expansion link 104 is provided with a pressing roller 105, and particles on the adsorption layer are flattened through the pressing rollers 105.
The compression roller 105 is of a cone-shaped structure with a large bottom and a small top, and due to the cone-shaped structure of the compression roller 105, when the compression roller 105 extrudes the particles on the adsorption layer, the particles on the lower part of the adsorption layer can be transferred to the upper part of the adsorption layer, so that the particles are uniformly distributed on the adsorption layer.
The edge of the upper surface of the auger 4 is provided with a plurality of protruding points, when the auger 4 rotates, the bottom surface of the press roller 105 is in intermittent contact with the protruding points, so that the telescopic part of the spring telescopic rod 104 and the press roller 105 are repeatedly telescopic, and a downward beating force is applied to the auger 4, so that the auger 4 vibrates.
Because the vapor in the shell 1 is obtained by burning tail gas generated by a benzene hydrogenation process and hydrogen which cannot be liquefied, the vapor conveyed into the shell 1 contains a small amount of particles, and because the blades of the auger 4 are arranged into a net structure, the blades of the auger 4 intercept the particles, and the particles can block meshes on the blades of the auger 4 for a long time, so that the circulation of the vapor in the shell 1 is influenced;
therefore, when the auger 4 rotates, the intercepted impurities are conveyed upwards, and along with the rotation of the auger 4, the particles on the blades of the auger 4 are thrown to the edges of the blades of the auger 4 under the action of centrifugal force, so that the particles are contacted with the adsorption layer of the arc-shaped plate 101 and adsorbed by the adsorption layer of the arc-shaped plate 101, and when the particles are adsorbed to a certain amount, the arc-shaped plate 101 is pulled out through the handle on the arc-shaped plate 101 and the adsorption layer is cleaned.
In the process, as the height of the blades of the auger 4 is fixed, only part of the adsorption layer contacted with the blades of the auger 4 can adsorb particles, so that the utilization rate of the adsorption layer is too low, and frequent cleaning is required;
therefore, when the auger 4 blade rotates, the control movable block 103 drives the spring telescopic rod 104 and the press roller 105 to slide on the annular guide rail 102 in the opposite direction to the auger 4, so that the conical press roller 105 can press the particles to the adsorption layer, and meanwhile, the press roller 105 is of a conical structure with a large lower part and a small upper part, so that the press roller 105 can guide the particles positioned at the lower part of the adsorption layer to the upper part of the adsorption layer, the particles are uniformly distributed on the adsorption layer, the utilization rate of the adsorption layer is improved, and the cleaning frequency is reduced.
When water vapor passes through the meshes of the blades of the auger 4, part of particles can be blocked in the meshes, and the particles are difficult to throw out towards the edge of the auger 4 only by the centrifugal force generated by the rotation of the auger 4, so that the cleaning is difficult;
through the upper surface edge of auger 4 is provided with a plurality of bump, when auger 4 rotates, compression roller 105 bottom surface can with a plurality of bump intermittent contact to make the expansion portion of spring telescopic link 104 and compression roller 105 stretch back and forth, with this apply a downward flapping force to auger 4, make auger 4 produce vibrations, thereby make the particulate matter on the mesh of auger 4 blade can be shaken out, so that it can receive centrifugal force to throw out to auger 4 edge, prevent that the particulate matter card from in the mesh of auger 4 blade.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (10)
1. A tail gas recycling device based on a benzene hydrogenation process comprises a shell (1) and a conveying pipe (2); the inside of the shell (1) is rotationally connected with a conveying pipe (2); the upper part of the shell (1) is provided with a plurality of air inlets (1 a); the lower part of the shell (1) is provided with a plurality of first air outlets (1 b); the conveying pipe (2) is provided with an upper opening and a lower opening; it is characterized by also comprising an auger (4) and a driving motor (5); an auger (4) is arranged in the conveying pipe (2); the blades of the auger (4) are arranged into a net structure, and the outer edge of the auger (4) is contacted with the inner wall of the shell (1); the shell (1) is provided with a driving motor (5), and an output shaft of the driving motor (5) is fixedly connected with the conveying pipe (2).
2. The tail gas recycling apparatus based on benzene hydrogenation process according to claim 1, wherein the first gas outlet (1 b) has a smaller diameter than the gas inlet (1 a).
3. The tail gas recycling device based on benzene hydrogenation process according to any one of claims 1-2, wherein the auger (4) is provided with a heat conducting framework (4 a).
4. The tail gas recycling device based on the benzene hydrogenation process according to claim 1, which is characterized by further comprising a liquid discharge pipe (3), a connecting rod (7) and a plugging disc (8); the shell (1) is communicated with a plurality of liquid discharge pipes (3); a connecting rod (7) is arranged in the liquid discharge pipe (3); the connecting rod (7) is arranged as an electric push rod structure; the expansion part of the connecting rod (7) is fixedly connected with a blocking disc (8), and the blocking disc (8) divides the liquid discharge pipe (3) into a first liquid discharge port (3 b) and a second liquid discharge port (3 c); the diameter of the plugging disc (8) is smaller than that of the first liquid outlet (3 b), and the diameter of the plugging disc (8) is larger than that of the second liquid outlet (3 c).
5. The tail gas recycling device based on benzene hydrogenation technology according to claim 4, wherein the plugging disc (8) is arranged as a buoyancy block, the connecting rod (7) is arranged as a telescopic rod structure, and the telescopic part of the connecting rod (7) can stretch and retract along with the lifting of the plugging disc (8).
6. The tail gas recycling device based on benzene hydrogenation process according to claim 4, further comprising a scraping bar (6); the outer edge of the auger (4) is provided with a plurality of scraping strips (6) distributed in an annular array.
7. The tail gas recycling device based on benzene hydrogenation process according to claim 1, further comprising an arc plate (101); the shell (1) is detachably connected with a plurality of arc plates (101); an adsorption layer is arranged on the inner cambered surface of the arc-shaped plate (101); the arc-shaped plate (101) is fixedly connected with a handle.
8. The tail gas recycling device based on the benzene hydrogenation process according to claim 7, further comprising an auxiliary cleaning unit, wherein the auxiliary cleaning unit comprises an annular guide rail (102) and a moving block (103), a spring telescopic rod (104) and a compression roller (105); an annular guide rail (102) is arranged on the inner top surface of the shell (1); the annular guide rail (102) is connected with a plurality of moving blocks (103) in a sliding way; each moving block (103) is provided with a spring telescopic rod (104); each spring telescopic rod (104) is provided with a pressing roller (105).
9. The tail gas recycling apparatus based on benzene hydrogenation process according to claim 8, wherein the press roller (105) is provided in a cone-shaped structure with a large lower side and a small upper side.
10. The tail gas recycling device based on benzene hydrogenation process according to claim 7, wherein a plurality of protruding points are arranged on the edge of the upper surface of the auger (4).
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| CN202311540436.5A CN117249714B (en) | 2023-11-20 | 2023-11-20 | Tail gas recycling device based on benzene hydrogenation technology |
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| CN2771785Y (en) * | 2005-02-07 | 2006-04-12 | 邹昌校 | Sleeving-pipe type heat exchanger |
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| CN110174009A (en) * | 2019-06-12 | 2019-08-27 | 珠海格力电器股份有限公司 | Double-tube heat exchanger with fin |
| DE102019121027A1 (en) * | 2019-08-03 | 2021-02-04 | Hubert Langheinz | Hollow jacket tube heat exchanger device |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2771785Y (en) * | 2005-02-07 | 2006-04-12 | 邹昌校 | Sleeving-pipe type heat exchanger |
| CN105276865A (en) * | 2014-07-18 | 2016-01-27 | 上海交通大学 | Coaxial threaded tube inner-inserted-core heat exchanger |
| CN108562179A (en) * | 2018-04-28 | 2018-09-21 | 中冶焦耐(大连)工程技术有限公司 | A kind of spiral jet double-tube heat exchanger and its working method |
| CN110057214A (en) * | 2019-05-24 | 2019-07-26 | 台州市特种设备监督检验中心 | A kind of heat-exchanger rig |
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| CN117249714B (en) | 2024-02-06 |
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