CN210251328U - Molecular sieve adsorption tower for solvent dehydration - Google Patents
Molecular sieve adsorption tower for solvent dehydration Download PDFInfo
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- CN210251328U CN210251328U CN201920800784.4U CN201920800784U CN210251328U CN 210251328 U CN210251328 U CN 210251328U CN 201920800784 U CN201920800784 U CN 201920800784U CN 210251328 U CN210251328 U CN 210251328U
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Abstract
A molecular sieve adsorption tower for solvent dehydration belongs to the technical field of chemical solvent dehydration equipment and is used for dehydrating a solvent. The technical scheme is as follows: an upper tube plate and a lower tube plate are arranged at the upper part and the lower part in the tank body, a plurality of corresponding tube holes are respectively arranged on the plate surfaces of the upper tube plate and the lower tube plate, a plurality of tube arrays are vertically arranged in the inner cavity of the tank body between the upper tube plate and the lower tube plate in parallel, the two ends of each tube array are respectively welded with the tube holes on the plate surfaces of the upper tube plate and the lower tube plate, a molecular sieve is filled in each tube array, an absorption tower gas-phase inlet and an absorption tower gas-phase outlet are respectively arranged on the bottom surface and the top surface of the tank body, a heat medium inlet and a heat medium outlet are respectively arranged at the lower part and the upper part of the tank body, and the heat medium inlet. The utility model has the advantages of being simple in structure and simple in operation, the solvent dehydration of molecular sieve is effectual, and the thermal medium can carry out regeneration activation to the molecular sieve, has prolonged the life of molecular sieve, has reduced the running cost.
Description
Technical Field
The utility model relates to a molecular sieve adsorption tower for being directed at solvent is dehydrated belongs to chemical industry solvent dewatering equipment technical field.
Background
In the chemical production process, the recovered solvent often contains certain moisture, so that the moisture in the solvent needs to be removed for recycling. At present, industrial water removal methods include a rectification method, an azeotropic distillation method, a pervaporation membrane separation method, a chemical dehydration method, and the like. The rectification method can not remove water by ordinary rectification when water and a solvent are subjected to azeotropy; the azeotropic distillation energy consumption is high, and the azeotrope is separated and recovered to cause a complex system; the investment of permeation gasification membrane dehydration equipment is large; the dehydration of chemicals causes pollution and is costly. Because the existing dehydration methods have obvious defects and cannot meet the requirements of production development, a simple, economic and practical solvent dehydration method is very necessary to be found.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a molecular sieve adsorption tower for solvent dehydration is provided, this kind of molecular sieve adsorption tower adopts the molecular sieve as adsorbing material, has easy operation, with low costs, advantage that adsorption effect is good, can reach fine solvent dehydration effect, realizes the regeneration cycle of solvent and uses.
The technical scheme for solving the technical problems is as follows:
a molecular sieve adsorption tower for solvent dehydration comprises a tank body, an upper pipe plate, a lower pipe plate, tube arrays and a molecular sieve, wherein the tank body is a vertical cylinder with two closed ends, the upper part and the lower part in the tank body are respectively provided with the upper pipe plate and the lower pipe plate, the peripheries of the upper pipe plate and the lower pipe plate are respectively vertically welded with the inner wall of the tank body, a closed cavity is respectively arranged between the upper pipe plate and the lower pipe plate and the top surface and the bottom surface of the tank body, the plate surfaces of the upper pipe plate and the lower pipe plate are respectively provided with a plurality of corresponding pipe holes, the tube arrays are vertically arranged in parallel in an inner cavity of the tank body between the upper pipe plate and the lower pipe plate, the two ends of the tube arrays are respectively welded with the pipe holes on the plate surfaces of the upper pipe plate and the lower pipe plate, the tube arrays are filled with the molecular sieve, the bottom surface and the top surface of the tank body are respectively provided with an, the heat medium inlet and the heat medium outlet are respectively communicated with the inner cavity of the tank body between the lower tube plate and the upper tube plate.
The molecular sieve adsorption tower for solvent dehydration further comprises a baffle plate, wherein the baffle plate is a circular plate surface, 2-3 baffle plates are vertically and parallelly fixed in the tank body, the inner cavity of the tank body is divided into a plurality of chambers by the 2-3 baffle plates, baffle plate pipe holes are formed in the baffle plates corresponding to the positions of the tubes, the diameters of the baffle plate pipe holes are larger than those of the tubes, the tubes penetrate through the baffle plate pipe holes, and a gap is reserved between the tubes and the hole walls of the baffle plate pipe holes.
According to the molecular sieve adsorption tower for solvent dehydration, the plurality of tubes in the inner cavity of the tank body are arranged in a regular triangle.
The utility model has the advantages that:
the utility model discloses a pack the molecular sieve in the shell and tube of jar internal portion, aqueous solvent gets into from the absorption tower gaseous phase import of jar body bottom, adsorbs the dehydration through the molecular sieve in the shell and tube, and the solvent after the dehydration is discharged from the absorption tower gaseous phase export of jar body top, enters the condenser and cools off, and what obtain is the solvent of getting rid of moisture; the molecular sieve with saturated adsorption needs to be regenerated, a heat medium is introduced from a heat medium inlet at the lower part of the tank body, the heat medium heats the tubes in the tank body, the molecular sieve adsorbing water in the tubes is dried and regenerated, the heat medium is discharged from a heat medium outlet at the upper part of the tank body, and the regenerated molecular sieve can adsorb water again.
The utility model has the advantages of being simple in structure and simple in operation, adopted molecular sieve adsorption and the working method of heat medium heating regeneration operation in turn, the molecular sieve adsorbs moisture can the reinforce, and solvent dehydration is effectual, and the heat medium has shortened the regeneration activation time of molecular sieve at jar internal direct to the tubulation heating, and regenerated molecular sieve can recycle, has prolonged the life of molecular sieve, has reduced the running cost of solvent dehydration.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a sectional view a-a of fig. 1.
The figures are labeled as follows: the device comprises a tank body 1, an upper pipe plate 2, a lower pipe plate 3, a tube array 4, a baffle plate 5, an absorption tower gas-phase inlet 6, an absorption tower gas-phase outlet 7, a heat medium inlet 8 and a heat medium outlet 9.
Detailed Description
The utility model discloses constitute by jar body 1, go up tube sheet 2, lower tube sheet 3, tubulation 4, baffling board 5, absorption tower gaseous phase import 6, absorption tower gaseous phase export 7, thermal medium import 8, thermal medium export 9.
The utility model adopts the working mode of molecular sieve adsorption and heat medium heating regeneration alternate operation.
The molecular sieve has very high surface area and adsorption capacity, has very strong adsorption capacity to polarized molecules and polarizable molecules, is water as a strong polarized molecule, has smaller molecular diameter than the molecular sieve, is very easy to be adsorbed by the molecular sieve, has simple operation, low cost and good adsorption effect, and can be desorbed, regenerated and recycled.
The figure shows that the tank body 1 is a vertical cylinder with two closed ends, the upper part and the lower part in the tank body 1 are respectively provided with an upper tube plate 2 and a lower tube plate 3, the peripheries of the upper tube plate 2 and the lower tube plate 3 are respectively connected with the inner wall of the tank body 1 in a vertical welding manner, closed cavities are respectively arranged between the upper tube plate 2 and the lower tube plate 3 and the top surface and the bottom surface of the tank body 1, and the surfaces of the upper tube plate 1 and the lower tube plate 2 are respectively provided with corresponding tube holes.
The figure shows that a plurality of tube arrays 4 are vertically placed in parallel in the inner cavity of the tank body 1 between the upper tube plate 2 and the lower tube plate 3, and the plurality of tube arrays 4 in the inner cavity of the tank body 1 are arranged in a regular triangle. The two ends of the plurality of tubes 4 are respectively welded with the tube holes on the surfaces of the upper tube plate 2 and the lower tube plate 3, the tubes 4 are filled with molecular sieves, and the adsorption characteristics of the molecular sieves are utilized to adsorb and dehydrate water in a solvent passing through the tubes 4.
The figure shows that the bottom surface and the top surface of the tank body 1 are respectively provided with an absorption tower gas phase inlet 6 and an absorption tower gas phase outlet 7, the absorption tower gas phase inlet 6 is connected with a cavity at the bottom of the tank body 1 below the lower tube plate 3, and the absorption tower gas phase outlet 7 is communicated with a cavity at the top of the tank body 1 above the upper tube plate 2. The aqueous solvent enters the chamber at the bottom of the tank 1 from the gas phase inlet 6 of the absorption tower, then reaches the chamber at the top of the tank 1 through the tubular column 4, and is discharged through the gas phase outlet 7 of the absorption tower. When the aqueous solvent passes through the column 4, adsorption dehydration is performed by the molecular sieve in the column 4.
The figure shows that the lower part and the upper part of the tank body 1 are respectively provided with a heat medium inlet 8 and a heat medium outlet 9, and the heat medium inlet 8 and the heat medium outlet 9 are respectively communicated with the inner cavity of the tank body 1 between the lower tube plate 3 and the upper tube plate 2. The heat medium is introduced from a heat medium inlet 8 at the lower part of the tank body 1, the tubes 4 are heated in the tank body 1, the molecular sieve adsorbing water in the tubes 4 is dried and regenerated, and the heat medium after heat exchange is discharged from a heat medium outlet 9 at the upper part of the tank body 1. The utility model discloses a hot medium be hot oil, hot oil have that mobility is good, noncorrosive, the thermal capacity is big, advantages such as boiling point height, are fit for as the medium to the molecular sieve heating.
The figure shows that the baffle plate 5 is a circular plate surface, 2-3 baffle plates 5 are fixed in the tank body 1 in an up-down parallel mode, the inner cavity of the tank body 1 is divided into a plurality of chambers by the 2-3 baffle plates 5, baffle plate pipe holes are formed in the positions, corresponding to the tubes 4, of the baffle plates 5, the diameters of the baffle plate pipe holes are larger than those of the tubes 4, the tubes 4 penetrate through the baffle plate pipe holes, gaps are formed between the tubes 4 and the hole walls of the baffle plate pipe holes, and a heat medium flows from the gaps between the baffle plates 5 and the tubes 4, so that the heat transfer effect is improved.
The working process of the utility model is as follows:
after being heated, the water-containing solvent enters a cavity at the bottom of the tank body 1 from a gas phase inlet 6 of an absorption tower at the bottom of the tank body 1 of the molecular sieve absorption tower through a gas phase, enters a tube array 4 from the cavity at the bottom of the tank body 1, and is adsorbed and dehydrated by a molecular sieve in the tube array 4, so that the water in the solvent is adsorbed by the molecular sieve; the dehydrated gas-phase solvent reaches a cavity at the top of the tank body 1, is discharged through a gas-phase outlet 7 of the absorption tower, enters a condenser and is cooled, and the solvent with the moisture removed is obtained.
When the molecular sieve with saturated adsorption needs to be regenerated, a heat medium is introduced from a heat medium inlet 8 at the lower part of the tank body 1, the heat medium flows along a gap between the baffle plate 5 and the tubes 4, the tubes 4 are heated in the tank body 1, moisture adsorbed by the molecular sieve in the tubes 4 is dried, the molecular sieve is regenerated, the heat medium after heat exchange is discharged from a heat medium outlet 9 at the upper part of the tank body 1, and the regenerated molecular sieve can adsorb moisture again.
The utility model discloses an embodiment as follows:
the diameter of the tank body 1 is 800mm, and the height is 2500 mm;
the diameter of the tube array 4 is DN100, and the length is 2000 mm;
the diameter of the gas phase inlet 6 of the absorption tower is DN100 mm;
the diameter of the gas phase outlet 7 of the absorption tower is DN100 mm;
the diameter of the heat medium inlet 8 is DN80 mm;
the diameter of the heat medium outlet 9 is DN65 mm;
the heat medium is heat conducting oil with the model of L-QB 300.
Claims (3)
1. A molecular sieve adsorption tower for solvent dehydration is characterized in that: the device comprises a tank body (1), an upper pipe plate (2), a lower pipe plate (3), tube arrays (4) and a molecular sieve, wherein the tank body (1) is a vertical cylinder with two closed ends, the upper part and the lower part in the tank body (1) are respectively provided with the upper pipe plate (2) and the lower pipe plate (3), the peripheries of the upper pipe plate (2) and the lower pipe plate (3) are respectively connected with the inner wall of the tank body (1) in a vertical welding way, a closed cavity is respectively arranged between the upper pipe plate (2) and the lower pipe plate (3) and the top surface and the bottom surface of the tank body (1), the plate surfaces of the upper pipe plate (2) and the lower pipe plate (3) are respectively provided with a plurality of corresponding tube holes, the tube arrays (4) are vertically arranged in the inner cavity of the tank body (1) between the upper pipe plate (2) and the lower pipe plate (3) in a parallel way, the two ends of the tube arrays (4) are respectively connected with the tube holes on the plate surfaces of, an absorption tower gas phase inlet (6) and an absorption tower gas phase outlet (7) are respectively arranged on the bottom surface and the top surface of the tank body (1), a heat medium inlet (8) and a heat medium outlet (9) are respectively arranged on the lower part and the upper part of the tank body (1), and the heat medium inlet (8) and the heat medium outlet (9) are respectively communicated with an inner cavity of the tank body (1) between the lower tube plate (3) and the upper tube plate (2).
2. The molecular sieve adsorption column for solvent dehydration of claim 1 characterized by: the novel oil filter is characterized by further comprising a baffle plate (5), wherein the baffle plate (5) is a circular plate surface, 2-3 baffle plates (5) are fixed in the tank body (1) in an up-down parallel mode, the inner cavity of the tank body (1) is divided into a plurality of chambers by the 2-3 baffle plates (5), baffle plate pipe holes are formed in the baffle plate (5) corresponding to the tubes (4), the diameter of each baffle plate pipe hole is larger than that of each tube (4), the tubes (4) penetrate through the baffle plate pipe holes, and gaps are reserved between the tubes (4) and the wall of each baffle plate pipe hole.
3. The molecular sieve adsorption column for solvent dehydration of claim 1 characterized by: the plurality of tubes (4) in the inner cavity of the tank body (1) are arranged in a regular triangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920800784.4U CN210251328U (en) | 2019-05-30 | 2019-05-30 | Molecular sieve adsorption tower for solvent dehydration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920800784.4U CN210251328U (en) | 2019-05-30 | 2019-05-30 | Molecular sieve adsorption tower for solvent dehydration |
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| CN210251328U true CN210251328U (en) | 2020-04-07 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111437625A (en) * | 2020-04-22 | 2020-07-24 | 上海蓝滨石化设备有限责任公司 | Molecular sieve dewatering device |
| CN112587958A (en) * | 2020-10-15 | 2021-04-02 | 江苏达诺尔科技股份有限公司 | Liquid or gas material dehydration pipe and dehydration device thereof |
| CN113634015A (en) * | 2021-07-26 | 2021-11-12 | 中建安装集团有限公司 | Device and process for purifying and recycling maleic anhydride solvent |
-
2019
- 2019-05-30 CN CN201920800784.4U patent/CN210251328U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111437625A (en) * | 2020-04-22 | 2020-07-24 | 上海蓝滨石化设备有限责任公司 | Molecular sieve dewatering device |
| CN112587958A (en) * | 2020-10-15 | 2021-04-02 | 江苏达诺尔科技股份有限公司 | Liquid or gas material dehydration pipe and dehydration device thereof |
| CN112587958B (en) * | 2020-10-15 | 2022-07-01 | 江苏达诺尔科技股份有限公司 | Liquid or gas material dehydration pipe and dehydration device thereof |
| CN113634015A (en) * | 2021-07-26 | 2021-11-12 | 中建安装集团有限公司 | Device and process for purifying and recycling maleic anhydride solvent |
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