CN219941813U - Stripping tower for CO-production of melamine and urea CO ₂ - Google Patents
Stripping tower for CO-production of melamine and urea CO ₂ Download PDFInfo
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- CN219941813U CN219941813U CN202321251746.0U CN202321251746U CN219941813U CN 219941813 U CN219941813 U CN 219941813U CN 202321251746 U CN202321251746 U CN 202321251746U CN 219941813 U CN219941813 U CN 219941813U
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- pipe
- inlet pipe
- tower body
- conical block
- liquid
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 18
- 239000004202 carbamide Substances 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 229920000877 Melamine resin Polymers 0.000 title claims abstract description 15
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 77
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000010992 reflux Methods 0.000 claims description 12
- 230000007246 mechanism Effects 0.000 claims description 10
- 210000001503 joint Anatomy 0.000 claims description 6
- 230000003028 elevating effect Effects 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 10
- 238000006073 displacement reaction Methods 0.000 abstract description 3
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 38
- 229910002092 carbon dioxide Inorganic materials 0.000 description 19
- 239000001569 carbon dioxide Substances 0.000 description 16
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 9
- 238000000034 method Methods 0.000 description 4
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 239000007991 ACES buffer Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Gas Separation By Absorption (AREA)
Abstract
The utility model discloses a melamine CO-production urea CO 2 The stripping tower relates to the technical field of urea production and comprises a tower body, a liquid inlet pipe is connected to the left side of the upper part of the tower body, the right end of the liquid inlet pipe extends into the tower body, a liquid distributor is connected through a connecting pipe, an air inlet pipe is connected to the lower end of the tower body, the upper end of the air inlet pipe extends into the tower body, a gas distributor is connected, a conical block I is arranged in the air inlet pipe, the conical block I is connected with the upper end of the air inlet pipe in a matched manner, the upper end of the conical block I is fixedly connected with a movable rod, and the upper end of the movable rod penetrates through gas distributionRound holes formed in corresponding positions on the device and round holes formed in corresponding positions on the lower side surface of the liquid distributor extend to the inside of the liquid distributor, synchronous adjustment is carried out on the displacement of the gas distributor according to the displacement of the liquid distributor, the steam stripping reaction is fully completed, the steam discharge is accelerated, and the condensate water is prevented from flowing reversely.
Description
Technical Field
The utility model relates to the technical field of urea production, in particular to melamine CO-production urea CO 2 And (3) a stripping tower.
Background
Currently, the ACES process of TEC is commonly used in urea production, and the CO2 stripper is a key device in these process units, consisting of three trays in the upper part and a falling liquid film heater in the lower part. The tray functions to strip the synthesis liquid adiabatically with the CO2 enriched gas rising from the column tubes, and strip the excess ammonia from the synthesis liquid to near optimum feed composition to achieve effective CO2 stripping.
When the existing stripping tower is used for distributing liquid, the pressure change in the liquid distributor is caused by the load of the stripping tower during working, so that the liquid flows out of the liquid distributor in an accelerating way, the liquid layer on the tower wall is thickened, at the moment, the air inflow of carbon dioxide needs to be synchronously increased, so that the gas stripping reaction of the increased liquid is facilitated, otherwise, the gas stripping reaction of the liquid is insufficient, and therefore, the melamine CO-production urea CO is provided 2 And (3) a stripping tower.
Disclosure of Invention
The utility model aims to overcome the existing defects and provide the CO-production of the melamine and the urea CO 2 The stripping tower synchronously adjusts the discharge capacity of the gas distributor according to the discharge capacity of the liquid distributor, ensures that the stripping reaction is fully completed, accelerates the discharge of steam, avoids the countercurrent of condensed water, and can effectively solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: co-production of urea CO from melamine 2 The stripping tower comprises a tower body, wherein the left side of the upper part of the tower body is connected with a liquid inlet pipe, the right end of the liquid inlet pipe extends into the tower body, the liquid distributor is connected through a connecting pipe, the lower end of the tower body is connected with an air inlet pipe, and the air inlet pipe is connected with the air inlet pipeThe upper end of the moving rod penetrates through a round hole formed in the corresponding position of the gas distributor and a round hole formed in the corresponding position of the lower side surface of the liquid distributor to extend into the liquid distributor, the conical block II is fixedly connected with the lower end of the connecting pipe in a matched mode, the lower end of the conical block I is connected with a lifting mechanism, the lifting mechanism is used for driving the conical block I to move up and down, the lower end left and right ends of the tower body are respectively connected with liquid discharge pipes, and an opening and closing valve is arranged in each liquid discharge pipe.
The design movable rod is connected with the first conical block and the second conical block, so that the inlet sizes of the liquid inlet pipe and the air inlet pipe can be synchronously adjusted, the discharge capacity of carbon dioxide and liquid is synchronously increased, the stripping reaction of the liquid is fully completed, the second conical block is designed, the pressure of the liquid inlet pipe caused by high load is relieved through the enlarged inlet, the liquid inlet pipe is enabled to be stably transported, when the stripping tower is controlled to work, the liquid enters the liquid distributor through the liquid inlet pipe, the liquid is distributed to the inner wall of the tower body through the liquid distributor to form a uniform liquid film, the carbon dioxide and the steam enter the gas distributor through the air inlet pipe, the carbon dioxide is distributed into the tower body to be contacted with the liquid film for stripping reaction, the proposed ammonia gas and the like are discharged along with the carbon dioxide, when the load in the liquid inlet pipe is large, the conical block is driven to move downwards through the power mechanism, the movable rod is driven to move downwards, and the conical block is driven to move downwards, and the air inlet amount and the liquid inlet amount are increased.
Further, the lifting mechanism comprises a hydraulic rod and a support, the inner side surface of the air inlet pipe is positioned at the lower side of the first conical block and fixedly connected with the hydraulic rod through the support, the input end of the hydraulic rod is controlled by an external control switch group to be electrically connected with the output end of an external power supply, and the upper end of the hydraulic rod is fixedly connected with the first conical block.
When the lifting mechanism is controlled to work, the hydraulic rod is controlled to work through the external control switch group, so that the conical block I is driven to move up and down.
Further, the stripping tower further comprises a third conical block and a conveying pipe, the upper end of the second conical block is fixedly connected with a round rod, the upper end of the round rod penetrates through a round hole formed in the connecting pipe to extend into the tower body, the third conical block is fixedly connected with the third conical block, the third conical block is connected with the lower end of the conveying pipe in a matched mode, and the lower end of the conveying pipe is communicated with the upper end of the tower body.
And the conical block III is designed, so that the size of the air inlet of the conveying pipe is adjusted through the conical block III, and the discharge of carbon dioxide in the tower body is accelerated, so that the pressure in the tower body is ensured to be normal.
Further, the stripping tower further comprises an air pump, the upper end of the conveying pipe is in butt joint with an air inlet pipe of the air pump, and the input end of the air pump is controlled by an external control switch group to be electrically connected with the output end of an external power supply.
The air pump is designed so as to pump out carbon dioxide and ammonia gas through the air pump.
Further, the stripping tower further comprises a reflux groove, an air outlet pipe of the air pump is in butt joint with the exhaust pipe, and the reflux groove is formed in the lower portion of the exhaust pipe.
The reflux groove is designed so as to drain the condensed water, thereby avoiding the reflux of the condensed water.
Compared with the prior art, the utility model has the beneficial effects that: CO-production of urea CO from melamine 2 A stripper having the following benefits:
1. the moving rod is designed to be connected with the first conical block and the second conical block, so that the sizes of inlets of the liquid inlet pipe and the air inlet pipe can be synchronously adjusted, the displacement of carbon dioxide and liquid is synchronously increased, and the liquid is ensured to fully complete the stripping reaction;
2. the conical block II is designed, so that the pressure of the liquid inlet pipe caused by high load is relieved through the enlarged inlet, and the liquid inlet pipe is stably transported;
3. the meter reflux groove is used for discharging condensed water, so that the condensed water is prevented from flowing back.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of the present utility model.
In the figure: the device comprises a tower body 1, a liquid inlet pipe 2, an air inlet pipe 3, a liquid distributor 4, a gas distributor 5, a conical block I, a moving rod 7, a conical block II, a hydraulic rod 9, a bracket 10, a liquid discharge pipe 11, an opening and closing valve 12, a conical block III, a conveying pipe 14, an air pump 15, a reflux tank 16 and an exhaust pipe 17.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-2, the present embodiment provides a technical solution: co-production of urea CO from melamine 2 The stripping tower comprises a tower body 1, a liquid inlet pipe 2 is connected to the left side of the upper part of the tower body 1, the right end of the liquid inlet pipe 2 extends into the tower body 1, and is communicated with a liquid distributor 4 through a connecting pipe, the lower end of the tower body 1 is communicated with an air inlet pipe 3, the upper end of the air inlet pipe 3 extends into the tower body 1 and is communicated with a gas distributor 5, a conical block I6 is arranged in the air inlet pipe 3 and is connected with the upper end of the air inlet pipe 3 in a matched manner, the upper end of the conical block I6 is fixedly connected with a movable rod 7, the upper end of the movable rod 7 passes through a round hole formed in a corresponding position on the gas distributor 5 and a round hole formed in a corresponding position on the lower side surface of the liquid distributor 4, and is connected with a conical block II 8 fixedly, the conical block II is connected with the lower end of the connecting pipe in a matched manner, the lower end of the conical block I6 is connected with a lifting mechanism, the lifting mechanism is used for driving the conical block I6 to move up and down, the left and right sides of the lower end of the tower body 1 are respectively communicated with a liquid discharge pipe 11, and an opening and closing valve 12 is arranged in each liquid discharge pipe 11.
The design movable rod 7 connects toper piece 6 and toper piece second 8 to can synchronous adjustment feed liquor pipe 2 and intake pipe 3's entry size, thereby synchronous increase carbon dioxide and the discharge capacity of liquid, thereby guarantee that the liquid is fully accomplished the strip reaction, design toper piece second 8, thereby alleviate feed liquor pipe 2 because of the pressure that high load produced through enlarging the entry, thereby make feed liquor pipe 2 stable transportation, when the control stripper works, liquid gets into liquid distributor 4 through feed liquor pipe 2, thereby it forms even liquid film to distribute liquid to tower 1 inner wall through liquid distributor 4, carbon dioxide and steam get into gas distributor 5 through intake pipe 3, thereby divide into in the tower 1 and carry out the strip reaction with the liquid film contact, ammonia etc. that proposes follows the carbon dioxide and discharges, when feed liquor pipe 2 internal load is great, drive toper piece first 6 through power unit and move down, thereby drive movable rod 7 and move down, thereby drive toper piece second 8 and move down, thereby increase air input and feed liquor volume.
The lifting mechanism comprises a hydraulic rod 9 and a support 10, the inner side surface of the air inlet pipe 3 is positioned at the lower side of the first conical block 6 and is fixedly connected with the hydraulic rod 9 through the support 10, the input end of the hydraulic rod 9 is controlled by an external control switch group to be electrically connected with the output end of an external power supply, and the upper end of the hydraulic rod 9 is fixedly connected with the first conical block 6.
When the lifting mechanism is controlled to work, the hydraulic rod 9 is controlled to work through the external control switch group, so that the conical block I6 is driven to move up and down.
The stripping tower further comprises a third conical block 13 and a conveying pipe 14, the upper end of the second conical block 8 is fixedly connected with a round rod, the upper end of the round rod penetrates through a round hole formed in the connecting pipe to extend into the tower body 1, the third conical block 13 is fixedly connected, the third conical block 13 is connected with the lower end of the conveying pipe 14 in a matched mode, and the lower end of the conveying pipe 14 is communicated with the upper end of the tower body 1.
The third conical block 13 is designed, so that the size of the air inlet of the conveying pipe 14 is adjusted through the third conical block 13, and the discharge of internal carbon dioxide is accelerated, and the normal pressure in the tower body 1 is ensured.
The stripping tower also comprises an air pump 15, the upper end of the conveying pipe 14 is in butt joint with an air inlet pipe of the air pump 15, and the input end of the air pump 15 is controlled by an external control switch group to be electrically connected with the output end of an external power supply.
The air pump 15 is designed so that carbon dioxide and ammonia gas are pumped away by the air pump 15.
The stripping tower also comprises a reflux groove 16, an air outlet pipe of the air pump 15 is in butt joint with an exhaust pipe 17, and the lower part of the exhaust pipe 17 is provided with the reflux groove 16.
The reflux groove 16 is designed to drain the condensed water so as to avoid the reflux of the condensed water.
The melamine CO-production urea CO provided by the utility model 2 The stripper operates on the following principle:
liquid enters the liquid distributor 4 through the liquid inlet pipe 2, thereby liquid is distributed to the inner wall of the tower body 1 through the liquid distributor 4 to form a uniform liquid film, carbon dioxide and steam enter the gas distributor 5 through the air inlet pipe 3, thereby the gas distributor is distributed into the tower body 1 and is contacted with the liquid film to carry out stripping reaction, the extracted ammonia and the like are pumped and discharged through the air pump 15 along with the carbon dioxide, the rest liquid is discharged through the liquid discharge pipe 11, when the load in the liquid inlet pipe 2 is large, the operation of the liquid discharge pipe 9 is controlled through the external control switch group, thereby the conical block I6 is driven to move downwards, the moving rod 7 is driven to move downwards, the conical block II 8 is driven to move downwards, the air inflow and the liquid inflow are increased, and meanwhile the conical block III 13 is driven to move downwards, so that the internal carbon dioxide discharge is accelerated, and the pressure in the tower body 1 is ensured to be normal.
It should be noted that the air pump 15 disclosed in the above embodiment adopts a new micro pump, and the operation of the hydraulic rod 9 and the air pump 15 by the external control switch set adopts a method commonly used in the prior art.
The foregoing description is only illustrative of the present utility model and is not intended to limit the scope of the utility model, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present utility model.
Claims (5)
1. Co-production of urea CO from melamine 2 The stripping tower is characterized in that: the novel tower comprises a tower body (1), wherein a liquid inlet pipe (2) is connected to the left side of the upper part of the tower body (1), the right end of the liquid inlet pipe (2) extends into the tower body (1) and is communicated with a liquid distributor (4) through a connecting pipe, the lower end of the tower body (1) is communicated with an air inlet pipe (3), and the novel tower comprises a water inlet pipe and a water outlet pipe, wherein the water inlet pipe is connected with the water inlet pipeThe upper end of intake pipe (3) extends to the inside of tower body (1) to switch on gas distributor (5), the inside of intake pipe (3) sets up toper piece one (6), toper piece one (6) is connected with the upper end cooperation of intake pipe (3), and movable rod (7) are connected to the upper end fixed connection of toper piece one (6), the round hole that corresponds the position and the lower side surface of liquid distributor (4) and set up on gas distributor (5) are corresponding the round hole that the position was seted up extends to the inside of liquid distributor (4), and fixed connection toper piece two (8), the lower extreme cooperation of toper piece two (8) and connecting pipe is connected, and elevating system is connected to the lower extreme of toper piece one (6), elevating system is used for driving toper piece one (6) and reciprocates, and the lower extreme left and right sides of tower body (1) is put through fluid-discharge tube (11) respectively, all sets up in every fluid-discharge tube (11) and opens and shuts valve (12).
2. Melamine CO-production urea CO according to claim 1 2 The stripping tower is characterized in that: the lifting mechanism comprises a hydraulic rod (9) and a support (10), wherein the inner side surface of the air inlet pipe (3) is positioned at the lower side of the conical block I (6) and fixedly connected with the hydraulic rod (9) through the support (10), the input end of the hydraulic rod (9) is controlled by an external control switch group to be electrically connected with the output end of an external power supply, and the upper end of the hydraulic rod (9) is fixedly connected with the conical block I (6).
3. Melamine CO-production urea CO according to claim 1 2 The stripping tower is characterized in that: the stripping tower further comprises a conical block III (13) and a conveying pipe (14), the upper end of the conical block II (8) is fixedly connected with a round rod, the upper end of the round rod penetrates through a round hole formed in the connecting pipe and extends into the tower body (1), the conical block III (13) is fixedly connected, the conical block III (13) is matched and connected with the lower end of the conveying pipe (14), and the lower end of the conveying pipe (14) is communicated with the upper end of the tower body (1).
4. A melamine co-production urea according to claim 3CO 2 The stripping tower is characterized in that: the stripping tower further comprises an air pump (15), the upper end of the conveying pipe (14) is in butt joint with an air inlet pipe of the air pump (15), and the input end of the air pump (15) is controlled by an external control switch group to be electrically connected with the output end of an external power supply.
5. Melamine CO-production urea CO according to claim 4 2 The stripping tower is characterized in that: the stripping tower further comprises a reflux groove (16), an air outlet pipe of the air pump (15) is in butt joint with the exhaust pipe (17), and the reflux groove (16) is formed in the lower portion of the exhaust pipe (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321251746.0U CN219941813U (en) | 2023-05-23 | 2023-05-23 | Stripping tower for CO-production of melamine and urea CO ₂ |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321251746.0U CN219941813U (en) | 2023-05-23 | 2023-05-23 | Stripping tower for CO-production of melamine and urea CO ₂ |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219941813U true CN219941813U (en) | 2023-11-03 |
Family
ID=88536813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321251746.0U Active CN219941813U (en) | 2023-05-23 | 2023-05-23 | Stripping tower for CO-production of melamine and urea CO ₂ |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219941813U (en) |
-
2023
- 2023-05-23 CN CN202321251746.0U patent/CN219941813U/en active Active
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| GR01 | Patent grant | ||
| GR01 | Patent grant |