CN219579880U - Novel DMO evaporation tower - Google Patents
Novel DMO evaporation tower Download PDFInfo
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- CN219579880U CN219579880U CN202223357614.4U CN202223357614U CN219579880U CN 219579880 U CN219579880 U CN 219579880U CN 202223357614 U CN202223357614 U CN 202223357614U CN 219579880 U CN219579880 U CN 219579880U
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Abstract
The utility model relates to the technical field of evaporation towers, in particular to a novel DMO evaporation tower, which comprises a tower body, wherein a gas outlet is formed in the top of the tower body, a gas-liquid separation layer, a packing layer, a gasification layer and a condensate heating layer are sequentially arranged in the inner cavity of the tower body from top to bottom, a DMO upper distributor, a DMO lower distributor and a hydrogen distributor are sequentially arranged in the gasification layer from top to bottom, an atomizer is arranged on the lower surface of the DMO upper distributor, an atomizer is arranged on the upper surface of the DMO lower distributor, and the condensate heating layer is formed by encircling the inner cavity of the lower part of the tower body.
Description
Technical Field
The utility model relates to the technical field of evaporation towers, in particular to a novel DMO evaporation tower.
Background
Ethylene glycol is the simplest and most important aliphatic dihydric alcohol, is also an important organic chemical raw material, and dimethyl oxalate hydrogenation is a core process route of conventional coal-made ethylene glycol. At present, the dimethyl oxalate hydrogenation process is that fresh hydrogen is mixed with recycle gas at an outlet of an H2 recycle gas compressor and then enters a shell pass of a material inlet and outlet heat exchanger, the mixture is subjected to heat exchange with gas discharged from an ethylene glycol synthesizing tower and then enters a steam heater (II) to be heated to 197 ℃ by medium-pressure saturated steam and then enters a DMO (double-diffused metal oxide semiconductor) evaporating tower, DMO at 100 ℃ from a dimethyl oxalate device firstly enters a DMO buffer tank and then is pressurized to 40bar (G) by a DMO feeding pump, enters the upper part of the DMO evaporating tower, DMO is gasified by hydrogen at 197 ℃ in the DMO evaporating tower, and enters a steam heater (I) to be heated to 180 ℃ after the temperature is reduced by 25-35 ℃ and then enters the synthesizing tower. The DMO evaporation tower is a vital device and plays a role in fully vaporizing DMO into DMO gas through mixing, so as to ensure that materials entering the ethylene glycol synthesis reactor are all gas-phase materials. In the production process, if the stock has liquid phase, carbon residue in the reaction raw materials is higher, so that the pressure difference of the glycol synthesis reactor is increased, the device cannot stably operate for a long period, and the catalyst is required to be stopped, overhauled and replaced or skimmed, so that the economic loss of the device is caused. The prior DMO evaporation tower can not fully gasify the DMO liquid in the feed into DMO gas, so that entrained liquid exists in the feed of the ethylene glycol synthesis reactor, the pressure difference is increased in the operation process of the hydrogenation reactor, and the service life of the hydrogen reactor is shortened.
Disclosure of Invention
Aiming at the technical defects, the utility model provides a novel DMO evaporation tower, which solves the problems of large pressure difference of a hydrogenation reactor, large maintenance probability, shortened service life, increased economic loss and the like caused by incomplete DMO liquid gasification of the traditional DMO evaporation tower.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
a novel DMO evaporation tower comprising: the tower body, tower body top set up gas outlet, and the tower body inner chamber from top to bottom sets gradually gas-liquid separation layer, packing layer, gasification layer, lime set heating layer, gasification layer from top to bottom sets gradually distributor, DMO lower distributor, hydrogen distributor on the DMO, and the distributor lower surface sets up the atomizer on the DMO, and the distributor upper surface sets up the atomizer under the DMO, the lime set heating layer by tower body lower part inner chamber surrounds and forms.
The technical scheme of the utility model is further improved as follows: the top surface of the tower body is arc-shaped.
The technical scheme of the utility model is further improved as follows: the gas-liquid separation layer is provided with a thread-shaped foam remover.
The technical scheme of the utility model is further improved as follows: go up distributor connection DMO air inlet 1, DMO air inlet 1 embedding tower outer wall, lower distributor connection DMO air inlet 2, DMO air inlet 2 embedding tower outer wall, DMO air inlet 1 and DMO air inlet 2 set up respectively in the both sides of tower outer wall.
The technical scheme of the utility model is further improved as follows: the atomizer can be arranged horizontally and can be arranged vertically.
The technical scheme of the utility model is further improved as follows: the outer wall of the lower cavity of the hydrogen distributor is provided with a hydrogen inlet.
The technical scheme of the utility model is further improved as follows: the bottom of the tower body is arc-shaped, and the outer wall of the bottom of the tower body is uniformly coiled with a steam tracing coil pipe.
Compared with the prior art, the novel DMO evaporation tower provided by the utility model has the following beneficial effects:
1. the utility model provides a novel DMO evaporation tower, which is provided with a gas-liquid separation layer, a packing layer, a gasification layer and a condensate heating layer, so that DMO gas and hydrogen entering from the lower part of the tower body can be fully mixed, DMO liquid is effectively gasified into DMO gas, and the completeness of gas-liquid separation is ensured, thereby reducing carbon residue in raw materials of an ethylene glycol synthesis reactor, reducing the pressure difference of the ethylene glycol synthesis reactor, improving the reaction effect, increasing the operation period of the reactor and saving the cost.
Drawings
In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a novel DMO evaporation tower according to the present utility model.
The marks in the figure: 1-a tower body; 2-gas outlet; 3-separating the gas-liquid layer; 4-a filler layer; 5-a gasification layer; 6-a condensate heating layer; 7-DMO upper distributor; an 8-DMO lower distributor; 9-a hydrogen distributor; 10-atomizer; 11-DMO inlet 1;12-DMO air inlet 2; 13-hydrogen gas inlet, 14-steam tracing coil.
Detailed Description
The technical scheme of the present utility model will be clearly and completely described in the following detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. 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.
As shown in fig. 1, this embodiment provides a novel DMO evaporation tower, including: the top surface of the tower body 1 is arc-shaped, the top is provided with a gas outlet 2, the gas fully mixed by DMO gas and hydrogen is conveyed to the glycol synthesis reactor from the gas outlet, the contact area between the arc-shaped design of the top surface and the gas is increased, and the pressure applied to the top of the tower body in unit area is reduced.
The inner cavity of the tower body is sequentially provided with a gas-liquid separation layer 3, a packing layer 4, a gasification layer 5 and a condensate heating layer 6 from top to bottom. The gas-liquid separation layer 3 is provided with a thread-shaped demister. The arrangement of the gas-liquid separation layer filiform foam remover can effectively remove mist in DMO gas and eliminate liquid phase in the gas. The packing layer 4 can promote the continuous improvement of the gas-liquid separation efficiency, and improve the contact and uniform distribution of the liquid phase and the gas phase in the tower. The gasification layer 5 can effectively change the phase of DMO liquid into DMO gas, and the condensate heating layer 6 is arranged to heat the DMO condensate falling into the bottom of the tower so as to form DMO gas.
In the embodiment of the utility model, the condensate heating layer 6 is formed by encircling an inner cavity at the lower part of the tower body, the bottom of the tower body is arc-shaped, the outer wall of the tower body is uniformly coiled with the steam tracing coil, DMO condensate falling from the upper layer of the tower body falls to the condensate heating layer, the arc-shaped design of the condensate heating layer increases the contact area with liquid, and the steam tracing coil uniformly coiled on the outer wall heats the DMO condensate through heat conduction to gasify the DMO condensate.
The gasification layer 5 sets gradually down distributor 7 under the DMO, distributor 8 under the DMO, hydrogen distributor 9, go up distributor 7 and connect DMO air inlet 1 11, DMO air inlet 1 embeds tower 1 outer wall, DMO air inlet 2 is connected to lower distributor 8, DMO air inlet 2 embeds tower 1 outer wall, DMO air inlet 1 and DMO air inlet 2 set up respectively in the both sides of tower 1 outer wall, hydrogen distributor 9 lower part cavity outer wall sets up hydrogen air inlet 13, further, the upper surface of distributor 7 sets up atomizer 10 under the DMO, but atomizer 10 level setting, but perpendicular setting according to customer's demand, satisfy user's installed diversified demand, the course of operation is: the hydrogen inlet is arranged at the lower part, after hydrogen is heated to 197 ℃ by saturated steam through an external equipment steam heater, hydrogen with high flow speed and high temperature is uniformly distributed through the hydrogen distributor from the hydrogen inlet and then enters the DMO evaporation tower, and the flow direction is from bottom to top; DMO at 100 ℃ from the dimethyl oxalate device firstly enters a DMO buffer tank, is pressurized to 40bar (G) through a DMO feed pump, is uniformly distributed through an upper distributor 7 through a DMO air inlet 1, and is uniformly distributed through a lower distributor and an atomizer 10 arranged on the lower surface, and the gas of a DMO liquid phase is eliminated through the atomizer 10 arranged on the upper surface, enters a DMO evaporation tower and is fully mixed with hydrogen, the hydrogen is used for gasifying the DMO and fully mixing and filtering a packing layer and a gas separation layer, so that the complete gasification of the DMO is ensured, the quality of the feed entering an ethylene glycol synthesis tower is ensured, the pressure difference of the ethylene glycol synthesis reactor is reduced, the reaction effect is improved, the operation period of the reactor is prolonged, and the cost is saved.
The foregoing examples are merely illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the apparatus of the present utility model.
Claims (7)
1. A novel DMO evaporation tower comprising: the tower body (1), tower body (1) top sets up gas outlet (2), tower body (1) inner chamber from top to bottom sets gradually gas-liquid separation layer (3), packing layer (4), gasification layer (5), lime set heating layer (6), gasification layer (5) from top to bottom set gradually distributor (7), under the DMO distributor (8), hydrogen distributor (9) on the DMO, on the DMO distributor (7) lower surface set up atomizer (10), under the DMO distributor (8) upper surface set up atomizer (10), lime set heating layer (6) by tower body (1) lower part inner chamber is encircled and is formed.
2. The novel DMO evaporation tower of claim 1, wherein: the top surface of the tower body (1) is arc-shaped.
3. The novel DMO evaporation tower of claim 1, wherein: the gas-liquid separation layer (3) is provided with a thread-shaped foam remover.
4. The novel DMO evaporation tower of claim 1, wherein: go up distributor (7) and connect DMO air inlet 1 (11), DMO air inlet 1 (11) embedding tower body (1) outer wall, down distributor (8) connect DMO air inlet 2 (12), DMO air inlet 2 (12) embedding tower body (1) outer wall, DMO air inlet 1 (11) with DMO air inlet 2 (12) set up respectively in the both sides of tower body (1) outer wall.
5. The novel DMO evaporation tower of claim 1, wherein: the atomizer (10) can be horizontally arranged and can be vertically arranged.
6. The novel DMO evaporation tower of claim 1, wherein: the outer wall of the lower cavity of the hydrogen distributor (9) is provided with a hydrogen inlet (13).
7. The novel DMO evaporation tower of claim 1, wherein: the bottom of the tower body (1) is arc-shaped, and the outer wall of the bottom of the tower body is uniformly coiled with a steam tracing coil pipe (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223357614.4U CN219579880U (en) | 2022-12-12 | 2022-12-12 | Novel DMO evaporation tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223357614.4U CN219579880U (en) | 2022-12-12 | 2022-12-12 | Novel DMO evaporation tower |
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| Publication Number | Publication Date |
|---|---|
| CN219579880U true CN219579880U (en) | 2023-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223357614.4U Active CN219579880U (en) | 2022-12-12 | 2022-12-12 | Novel DMO evaporation tower |
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| Country | Link |
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| CN (1) | CN219579880U (en) |
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2022
- 2022-12-12 CN CN202223357614.4U patent/CN219579880U/en active Active
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