CN214972938U - Water washing tower and olefin separation device - Google Patents
Water washing tower and olefin separation device Download PDFInfo
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- CN214972938U CN214972938U CN202120581204.4U CN202120581204U CN214972938U CN 214972938 U CN214972938 U CN 214972938U CN 202120581204 U CN202120581204 U CN 202120581204U CN 214972938 U CN214972938 U CN 214972938U
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Abstract
The utility model relates to a methanol-to-olefins technical field discloses a washing tower and alkene separator. The washing tower comprises a shell (1), wherein a tower plate section (3) and a filler section (2) arranged above the tower plate section (3) are arranged in the shell (1), the tower plate section (3) comprises a plurality of tower plates (31) and a downcomer (32) which are horizontally arranged, and a filler positioned in the shell is arranged in the filler section (2). The foaming caused by using the plate tower is eliminated through the filler section arranged in the water washing tower, the water washing product gas is prevented from bringing the water washing water in the water washing tower into downstream equipment, and the normal operation of the methanol-to-olefin device is ensured.
Description
Technical Field
The utility model relates to a methanol-to-olefins field specifically relates to a washing tower and alkene separator.
Background
The olefin separation device is important production equipment in the production process of preparing the olefin from the methanol, and aldehyde ketone oxide in product gas is washed away by using a water washing tower in the device, so that the smooth operation of the subsequent product production flow is ensured. Among them, the water washing column may be used in the form of either a packed column or a plate column, but both of them are insufficient.
The packed tower mainly comprises a cylindrical tower body and fillers stacked in the tower, the absorption effect is superior to that of a plate tower, but after a Methanol To Olefin (MTO) device is used for purifying water (purified water contains catalyst particles) to serve as washing water, due to the dense structure of the fillers in the packed tower, the pressure difference of the whole tower rises, so that catalyst dust in the washing water blocks gaps among the fillers, the fillers are blocked, and the equipment is required to be frequently cleaned to ensure normal operation. In order to solve the problem of blockage of the packed tower, cleaner deoxygenated water is used as washing water, but the deoxygenated water is higher in cost and poor in economical efficiency.
The plate tower comprises a cylindrical tower body and a plurality of tower plates arranged in the tower according to a certain distance of horizontal devices, the problem that a packed tower is easy to block by using MTO (methanol to olefin) purified water is solved, but aldehyde ketone oxide is serious in foaming in water, and the plate tower can not be defoamed, so that the down-flow pipe of the plate tower is serious in flooding, and product gas can take water washing water into downstream equipment when the liquid level of the water washing tower is empty, the liquid level of the downstream equipment is full, and troubles are brought to normal operation of an olefin separation device.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a washing tower and alkene separator to it is serious to solve the washing tower through this washing tower and use the board-like tower because of flooding foaming, and the problem of unable defoaming also avoids the packing tower to use the jam problem that MTO purified water leads to.
In order to achieve the above object, an aspect of the present invention provides a water washing tower, which comprises a housing, the housing is provided with a tower plate section and is arranged in the housing, the packing section is arranged above the tower plate section, the tower plate section comprises a plurality of tower plates and a downcomer, the packing section is internally provided with a filler located in the housing.
Optionally, the height ratio of the packing section to the tray section is from 1:9 to 3: 7.
Optionally, the shell comprises a gas inlet for gas-phase materials to enter the tower, the gas inlet is arranged below the tower plate section, and a gas outlet arranged at the top of the shell so that the gas-phase materials are discharged out of the shell.
Optionally, the housing further comprises a water inlet for inflow of washing water, the water inlet is disposed above the filler section, and the housing further comprises a water outlet disposed at a bottom of the housing so that the washing water is discharged out of the housing.
Optionally, a water baffle fixedly connected to the inner surface of the shell is arranged between the filling section and the tower plate section, and the water baffle is positioned above the downcomer at the topmost layer of the tower plate section.
Optionally, an included angle between the water baffle and the inner surface of the shell in the vertical direction is 70-89 degrees.
Optionally, the topmost tray of the tray section is formed with air holes and is connected with an upwardly extending air lift tube.
Optionally, the water deflector is positioned above the gas lift cylinder and horizontally offset from the gas lift cylinder.
The utility model discloses the second aspect provides an olefin separation device, including foretell water scrubber.
Optionally, the olefin separation device further comprises a pump for pumping the water wash into the water wash tower, wherein the pump comprises a filter screen for filtering solid impurities.
Through the technical scheme, the utility model provides a washing tower eliminates the foaming that causes because of using the plate tower through the section of packing that sets up in the washing tower, has avoided washing product gas to go into low reaches equipment with the washing hosepipe in the washing tower, guarantees the normal operating of methyl alcohol system alkene device.
Drawings
FIG. 1 is a schematic structural view of an embodiment of a water scrubber according to the present invention, wherein the water scrubber is not shown in full;
fig. 2 is a schematic structural diagram of an embodiment of a water baffle and an air lift cylinder of the water scrubber of the present invention.
Description of the reference numerals
1-shell, 2-filling section, 3-tray section, 31-tray, 32-downcomer, 4-air inlet, 5-air outlet, 6-water inlet, 7-water outlet, 8-water baffle and 9-air lift cylinder.
Detailed Description
The following detailed description of the embodiments of the present invention will be made with reference to the accompanying drawings. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
In the present invention, unless otherwise specified, the use of directional terms such as "upper", "lower", "inner", "outer", "top" and "bottom" generally refer to the orientation shown in fig. 1. It should be noted that this is only for the convenience of describing the present invention, and should not be construed as a limitation of the present invention.
In the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
An aspect of the utility model provides a washing tower, including casing 1, be provided with tower plate section 3 and set up in the casing 1 filler section 2 of 3 tops of tower plate section, a plurality of column plates 31 and downcomer 32 that tower plate section 3 set up including the level, be provided with in the filler section 2 and be located the filler in the casing.
It should be noted that the filler of the present invention is a filler used in a general filler type water scrubber, the filler belongs to standard general industrial products, and the complex geometric shape of the filler is utilized to enhance the mass transfer or heat transfer effect between two phases by increasing the area between two phases of fluid, when the filler is piled up in a large amount, many gaps are generated, and the gas phase and the liquid phase (i.e. water scrubber) can fully transfer mass or heat when passing through the gaps. The utility model discloses in column plate 31 that sets up in column plate section 3 can set up to multiple column plate form (for example forms such as floating valve column plate, bubble cap, sieve and floatula column plate) so as to do benefit to carry out mass transfer or heat transfer between water washing water and the product gas, still can be provided with overflow weir isotructure as required, in order to guarantee column plate 31's normal operating.
The utility model discloses a setting is in it can have complicated geometric structure to pack in the filler section 2 of 3 tops in column plate section, breaks when passing through the filler section because of the bubble that the foaming problem produced among the messenger's column plate section washing process, and then has avoided washing product gas to go into low reaches equipment with the washing hosepipe in the washing tower, guarantees the normal operating of methyl alcohol system alkene device.
In order to effectively ensure the defoaming effect of the water washing tower, and prevent the pressure difference of the tower plate from rising due to the fact that the gaps among the fillers in the filler section 2 are blocked by the solid catalyst powder in the water washing water, and the water washing process cannot be continued, as shown in fig. 1, the height ratio of the filler section 2 to the tower plate section 3 can be 1:9-3: 7. Namely, 10% -30% of the effective tray section of the whole washing tower is set to be the filler section 2, so that the poor defoaming effect caused by the over-short of the filler section 2 is avoided, the influence on the washing process caused by the over-long setting of the filler section 2 is avoided, the specific proportion of the filler section 2 and the tray section 3 in use can be adjusted according to the foaming degree of a gas phase and the solid phase content in the washing water, when the foaming phenomenon is serious, the proportion of the filler section 2 is correspondingly increased, the gas-liquid phenomenon generated by foaming can be effectively eliminated, when the solid content in the washing water is higher, the proportion of the filler section 2 can be properly reduced, and the problem of blocking of the filler section 2 caused by the washing water with higher solid content is avoided. In addition, to using the higher washing water condition of solid phase content, the utility model discloses in can using large-scale preventing blockking up the filler, reduce and block up the probability.
As an embodiment of the present invention, referring to fig. 1, the casing 1 includes an air inlet 4 for gas-phase material to enter the tower, the air inlet 4 is disposed below the tower plate section 3, and further includes an air outlet 5 disposed at the top of the casing 1, so that the gas-phase material is discharged from the casing 1. Locate the air inlet the washing process can be fully carried out to the gas of treating washing that guarantees to get into in the washing tower below the column plate section, the effective part in the make full use of washing tower sets up the product gas after being convenient for wash in the gas outlet 5 at casing top flows to back processing procedure.
In order to make the gas to be washed contact with the washing water as much as possible and make full use of the effective part in the washing tower, referring to fig. 1, the casing 1 further includes a water inlet 6 for the inflow of the washing water, the water inlet 6 is disposed above the packing section 2, and the casing 1 further includes a water outlet 7 disposed at the bottom of the casing 1, so that the washing water is discharged out of the casing 1. The arrangement is that the washing water can fully flow through the effective part of the washing tower and fully contact with the gas to be washed to complete the washing process, and the water outlet 7 arranged at the bottom of the shell 1 can enable the washing water after washing to naturally discharge out of the washing tower without other equipment.
As an alternative embodiment of the present invention, as shown in fig. 2, a water baffle 8 fixedly connected to the inner surface of the casing 1 may be provided between the packing section 2 and the tower plate section 3, and the water baffle is located above the downcomer 32 at the topmost layer of the tower plate section 3. Make washing water fully pass through all column plates in the column plate section 3 through setting up breakwater 8, and then guarantee to carry out abundant contact with treating washing gas, accomplish the washing process.
Further, in order to smoothly flow the water-washing water blocked by the water guard plate 8 to the tower plate section 3, an angle between the water guard plate 8 and the inner surface of the housing 1 in the vertical direction may be set to 70 to 89 degrees. Preferably 75 degrees. As shown in fig. 2, the water baffle 8 is arranged downwards at an angle of 75 degrees, and the water washing water falling into the water baffle 8 is facilitated to naturally flow downwards along the water baffle 8 by arranging the water baffle 8 at a downward inclination angle of 70-89 degrees, and the angle arrangement is such that the water baffle 8 does not occupy too much longitudinal space to affect the efficiency of the water washing tower.
Since the topmost tray 31 of the plate section 3 can receive the washing water flowing down from the packing section 2, and the washing water received by the topmost tray 31 is not uniform, and the flow rate is changed, as shown in fig. 2, the topmost tray 31 of the plate section 3 may be provided with air holes and connected with the air lift 9 extending upward). The tray 31 is provided with a plurality of air holes, and the gas lift cylinder 9 is connected to the tray 31 at the air hole position so that the gas on the lower side of the tray 31 can flow upward through the air holes and the gas lift cylinder 9. The gas lift cylinder 9 is arranged, so that the topmost tower plate 31 is not easy to block and has higher operation elasticity, when the liquid flow changes, the thickness of the liquid layer on the tower plate is mainly controlled by the height of the overflow weir, so that the thickness change of the liquid layer on the tower plate is very small, the operation of the tower plate is stable, and the gas-liquid contact condition is not obviously changed due to the change of gas-liquid load. The diameter of the gas lift cylinder 9 can be set as desired to ensure that the product gas passes smoothly through the topmost tray 31.
In order to allow the water wash water flowing through the water deflector 8 to flow entirely into the topmost tray 31 and not to obstruct the product gas from entering the packing section 2, the water deflector 8 is located above the gas lift cylinder 9 and horizontally offset from the gas lift cylinder 9, as shown with reference to fig. 2. Through the arrangement, the problem that the efficiency of the washing tower is reduced and the like due to the phenomenon that the inflow gas phase is back-mixed and the like caused by overlarge water flow of partial area washing water when the washing water falls is solved.
The utility model discloses the second aspect provides an olefin separation device, including foretell water scrubber. Alkene separator need use the washing tower to wash away the aldehyde ketone oxide in the product gas on the flow, in this flow, uses the utility model provides a the washing tower uses as the absorption tower to can use the purified water in the methyl alcohol system alkene device (MTO device) as the washing water, MTO purified water is cheaper, can effectively reduce manufacturing cost, consequently uses the flooding phenomenon of plate tower that leads to because of aldehyde ketone oxide can be eliminated on the one hand to the washing tower leads to the problem that the product gas will wash the water area and go into low reaches equipment, and on the other hand has also solved the problem that the washing tower was blockked up to the washing tower because of the washing water solid phase material that leads to using the packed tower, does not influence simultaneously the washing effect of washing tower.
It should be noted that, since the purified water of the methanol to olefin apparatus contains a certain amount of solid-phase substances (generally, catalyst powder, which does not affect the washing process), the washing water needs to be filtered and then subjected to a washing process to prevent the solid-phase substances from blocking the packing section. The olefin separation device may further include a pump for pumping the water wash into the water wash tower, the pump including a screen for filtering solid impurities. Through the solid phase material of partial washing aquatic can be got rid of in the setting of filter screen, especially the large granule impurity of washing aquatic, and only the solid phase material of tiny granule remains washing aquatic, and then prevent solid phase material jam gap between the filler in the filler section 2 leads to the washing tower to shut down, can also prolong the operation cycle of washing tower guarantees that whole tower does not block up in a longer maintenance cycle, reduces the maintenance cost, increases the washing tower productivity.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited thereto. In the technical idea scope of the present invention, it is possible to provide the technical solution of the present invention with a plurality of simple modifications, including combining each specific technical feature in any suitable manner, and in order to avoid unnecessary repetition, the present invention does not provide additional description for various possible combinations. These simple variations and combinations should also be considered as disclosed in the present invention, all falling within the scope of protection of the present invention.
Claims (10)
1. The washing tower is characterized by comprising a shell (1), wherein a tower plate section (3) and a filler section (2) arranged above the tower plate section (3) are arranged in the shell (1), the tower plate section (3) comprises a plurality of horizontally arranged tower plates (31) and a down-flow pipe (32) connected to the edge of the tower plates (31) and extending downwards, and a filler positioned in the shell is arranged in the filler section (2).
2. A water wash column according to claim 1, wherein the height ratio of the packing section (2) to the tray section (3) is 1:9-3: 7.
3. A water scrubber according to claim 1, characterized in that the shell (1) comprises a gas inlet (4) for gas phase material into the tower, which gas inlet (4) is arranged below the tower plate section (3), and a gas outlet (5) arranged at the top of the shell (1) for gas phase material to exit the shell (1).
4. A water wash tower according to claim 1, characterized in that said housing (1) further comprises a water inlet (6) for inflow of wash water, said water inlet (6) being arranged above said fill section (2), said housing (1) further comprising a water outlet (7) arranged at the bottom of the housing (1) for draining said wash water out of said housing (1).
5. A water scrubber according to claim 1, characterized in that between the packing section (2) and the tray section (3) is arranged a water deflector (8) fastened to the inner surface of the housing (1), which is located above the downcomer (32) of the topmost layer of the tray section (3).
6. A water scrubber according to claim 5, characterized in that the vertical angle between the water deflector (8) and the inner surface of the housing (1) is 70-89 degrees.
7. A water scrubber according to claim 5, characterized in that the topmost tray (31) of the tray section (3) of the water scrubber is formed with air holes and connected with an upwardly extending lift cylinder (9).
8. A water scrubber according to claim 7, characterized in that the water deflector (8) is located above the gas lift cylinder (9) and horizontally offset from the gas lift cylinder (9).
9. An olefin separation apparatus comprising the water wash column of any one of claims 1 to 8.
10. The olefin separation device of claim 9, further comprising a pump for pumping the water wash into the water wash column, the pump comprising a screen for filtering solid impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120581204.4U CN214972938U (en) | 2021-03-22 | 2021-03-22 | Water washing tower and olefin separation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120581204.4U CN214972938U (en) | 2021-03-22 | 2021-03-22 | Water washing tower and olefin separation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214972938U true CN214972938U (en) | 2021-12-03 |
Family
ID=79161881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120581204.4U Active CN214972938U (en) | 2021-03-22 | 2021-03-22 | Water washing tower and olefin separation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214972938U (en) |
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2021
- 2021-03-22 CN CN202120581204.4U patent/CN214972938U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Block C, Shenhua building, 16 ande Road, Dongcheng District, Beijing, 100011 Patentee after: CHINA SHENHUA COAL TO LIQUID AND CHEMICAL Co.,Ltd. Patentee after: Guoneng Xinjiang Chemical Co., Ltd Address before: Block C, Shenhua building, 16 ande Road, Dongcheng District, Beijing, 100011 Patentee before: CHINA SHENHUA COAL TO LIQUID AND CHEMICAL Co.,Ltd. Patentee before: Shenhua Xinjiang Chemical Co., Ltd |
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| CP01 | Change in the name or title of a patent holder |