CN220370996U - Acetaldehyde system economizer - Google Patents
Acetaldehyde system economizer Download PDFInfo
- Publication number
- CN220370996U CN220370996U CN202321439457.3U CN202321439457U CN220370996U CN 220370996 U CN220370996 U CN 220370996U CN 202321439457 U CN202321439457 U CN 202321439457U CN 220370996 U CN220370996 U CN 220370996U
- Authority
- CN
- China
- Prior art keywords
- acetaldehyde
- pipeline
- heat exchanger
- falling film
- absorption tower
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 title claims abstract description 134
- 238000010521 absorption reaction Methods 0.000 claims abstract description 35
- 239000011552 falling film Substances 0.000 claims abstract description 29
- 238000003860 storage Methods 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 9
- 238000012856 packing Methods 0.000 claims description 6
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000005457 ice water Substances 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 238000009833 condensation Methods 0.000 abstract description 12
- 230000005494 condensation Effects 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 abstract description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- 238000000034 method Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- 239000000945 filler Substances 0.000 description 4
- 239000002918 waste heat Substances 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 3
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 2
- 239000005977 Ethylene Substances 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005057 refrigeration Methods 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The utility model discloses an energy-saving device of an acetaldehyde system, which comprises a reactor, a coiled tube heat exchanger, an ice maker, a middle tank, a falling film absorption tower, a dilute acetaldehyde storage tank, a rectifying tower and a reboiler, wherein the reactor is connected with the coiled tube heat exchanger through a pipeline, the coiled tube heat exchanger is connected with the ice maker, the middle tank and the falling film absorption tower through a pipeline, the falling film absorption tower is connected with the rectifying tower through a pipeline, and the falling film absorption tower is also connected with the dilute acetaldehyde storage tank through a pipeline. The acetaldehyde system energy-saving device adopts the coiled tube type heat exchanger to solve the problem of equipment redundancy, realizes simultaneous heat exchange of multiple strands of materials, achieves the effect of original four-stage condensation, enhances the absorption effect by the falling film absorption tower, reduces the cost required by acetaldehyde rectification, reduces the cost of circulating water and cooling of an ice maker, realizes direct interception of acetaldehyde in the earlier stage, has simple flow, fully utilizes heat energy, solves the problem of less acetaldehyde condensation amount, reduces the production cost of acetaldehyde, and accelerates acetaldehyde rectification.
Description
Technical Field
The utility model relates to the technical field of acetaldehyde energy conservation, in particular to an acetaldehyde system energy-saving device.
Background
With the rapid development of global economy, acetaldehyde plays an important role in industrial production; two main technological routes for producing acetaldehyde exist in the world at present, one is to produce acetaldehyde by using ethanol as a raw material and through catalytic oxidation; the other is to take ethylene as raw material and produce acetaldehyde through catalytic oxidation reaction. In China, two routes exist, most production devices mainly adopt an ethylene route, when acetaldehyde is produced by utilizing an ethanol route, a large amount of air is needed to enter a reactor, water is generated in the reaction, the heat exchange is not timely due to the fact that the boiling point of the acetaldehyde is low, the temperature of the reactor is high, the air speed is high, the condensation effect is poor, sufficient water is needed to be added into an absorption tower to absorb the acetaldehyde, and then rectification is carried out, so that the production cost is high.
The Chinese patent with publication number of CN115574622A discloses a new process for recycling condensed water of wine tower steam in acetaldehyde production, which refers to a new process for automatic feeding, distillation of wine tower, rapid condensation of steam, high-efficiency circulation refrigeration, condensed water refrigeration and condensed water detection.
Chinese patent publication No. CN218653763U discloses an improved acetaldehyde energy saving device, which mentions a condensation method of acetaldehyde vapor, two-stage condensation and two-stage separation are adopted, and the separator is composed of three interception devices: gas separator, coalescing separator, multichannel plate condenser. The device is complicated and has large investment.
The above patent has the following drawbacks during actual use:
the existing acetaldehyde production system uses circulating water to exchange heat with reactor steam in the ethanol method, the heat exchange effect is bad, two-stage condensation cooling is connected at the back, the high content of acetaldehyde in the mixed gas leads to large water absorption amount and bad absorption effect, and the plate heat exchanger leads to bad heat exchange effect of furnace gas, two condensers are connected at the back, the rectification energy consumption is large, and the cost is high.
Disclosure of Invention
The utility model aims to provide an energy-saving device of an acetaldehyde system, which realizes the direct interception of acetaldehyde in the earlier stage, has simple flow, fully utilizes heat energy, solves the problem of less condensation amount of acetaldehyde, reduces the production cost of acetaldehyde, ensures that the acetaldehyde rectification is faster, and can solve the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides an acetaldehyde system economizer, includes reactor, around tubular heat exchanger, ice maker, intermediate tank, falling film absorption tower, rare acetaldehyde storage tank, rectifying column and reboiler, the reactor has around tubular heat exchanger through the pipe connection, around tubular heat exchanger has ice maker, intermediate tank and falling film absorption tower through the pipe connection, around tubular heat exchanger's middle-end still has the rectifying column through the pipe connection through the lower extreme of pipe connection reactor, the falling film absorption tower still has rare acetaldehyde storage tank through the pipe connection, around tubular heat exchanger still has the reboiler through the pipe connection, the reboiler has the rectifying column through the pipe connection.
Preferably, a first medium inlet and a second medium inlet are arranged at the upper end of the coiled tube heat exchanger, the first medium inlet is connected with a reaction steam pipeline of the reactor, and the second medium inlet is connected with a raw material pipeline.
Preferably, a third medium inlet and a second medium outlet are arranged at the middle end of the coiled tube heat exchanger, the third medium inlet is connected with the ice water pipeline, and the second medium outlet is connected with the feeding pipeline.
Preferably, a first medium outlet and a third medium outlet are arranged at the lower end of the coiled tube heat exchanger, the first medium outlet is connected with a storage tank pipeline, and the third medium outlet is connected with an ice machine inlet pipeline.
Preferably, the falling film absorption tower comprises a tower body, an air inlet, an air outlet and a liquid outlet, wherein the air outlet is formed in the upper end of the tower body, the air inlet is formed in the lower end of the tower body, the air inlet is connected with a first medium outlet through a pipeline, the liquid outlet is formed in the bottom of the tower body, and the liquid outlet is connected with a dilute acetaldehyde storage tank through a pipeline.
Preferably, a packing layer is further arranged on the inner side of the tower body, and the packing layers are vertically distributed in the tower body at equal intervals.
Compared with the prior art, the utility model has the following beneficial effects:
according to the acetaldehyde system energy-saving device, ethanol and cooling water are respectively pumped into the coiled tube type heat exchanger through the pump through the pipeline connection, steam from the reactor also enters the coiled tube type heat exchanger to cool, multiple strands of materials are subjected to simultaneous heat exchange, raw materials enter the reactor after being preheated, cooled materials enter the dilute acetaldehyde storage tank, gas enters the falling film absorption tower and low-pressure steam is generated at the same time, the partial steam is used in the acetaldehyde rectifying tower and the reboiler to realize waste heat utilization, the problem of equipment redundancy is solved through the coiled tube type heat exchanger, multiple strands of materials are subjected to simultaneous heat exchange, the original four-stage condensation effect is achieved, the absorption effect is enhanced through the falling film absorption tower, the cost of acetaldehyde rectification is reduced, the cost of circulating water and an ice maker is reduced, the direct interception of acetaldehyde in the earlier stage is realized, the flow is simple, the heat energy is fully utilized, the problem of low acetaldehyde condensation amount is solved, and meanwhile, the production cost of acetaldehyde is reduced, and the acetaldehyde rectification is faster.
Drawings
FIG. 1 is a schematic diagram of an energy saving device of an acetaldehyde system according to the present utility model;
FIG. 2 is a schematic view of a coiled tube heat exchanger of the present utility model;
FIG. 3 is a schematic diagram of a falling film absorber of the present utility model.
In the figure: 1. a reactor; 2. a coiled tube heat exchanger; 21. a first medium inlet; 22. a second medium inlet; 23. a third medium inlet; 24. a second medium outlet; 25. a first medium outlet; 26. a third medium outlet; 3. an ice maker; 4. an intermediate tank; 5. a falling film absorption tower; 51. a tower body; 52. an air inlet; 53. an air outlet; 54. a liquid outlet; 55. a filler layer; 6. a dilute acetaldehyde storage tank; 7. a rectifying tower; 8. and (3) a reboiler.
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.
In order to solve the technical problems of poor heat exchange effect, high rectification energy consumption and high cost in the prior art, referring to fig. 1-3, the present embodiment provides the following technical solutions:
the utility model provides an acetaldehyde system economizer, including reactor 1, around tubular heat exchanger 2, ice maker 3, intermediate tank 4, falling film absorption tower 5, dilute acetaldehyde storage tank 6, rectifying column 7 and reboiler 8, reactor 1 has around tubular heat exchanger 2 through the pipe connection, around tubular heat exchanger 2 has ice maker 3 through the pipe connection, intermediate tank 4 and falling film absorption tower 5, the lower extreme of reactor 1 is still passed through the pipe connection in the middle end of around tubular heat exchanger 2, falling film absorption tower 5 has rectifying column 7 through the pipe connection, falling film absorption tower 5 still has dilute acetaldehyde storage tank 6 through the pipe connection, around tubular heat exchanger 2 still has reboiler 8 through the pipe connection, reboiler 8 has rectifying column 7 through the pipe connection.
It should be noted that, ethanol and cooling water are respectively pumped into the coiled tube type heat exchanger 2 through a pipeline connection through a pump, steam from the reactor 1 also enters the coiled tube type heat exchanger 2 to cool, multiple strands of materials are subjected to heat exchange simultaneously, the materials enter the reactor 1 after being preheated, the cooled materials enter the dilute acetaldehyde storage tank 6, gas enters the falling film absorption tower 5, low-pressure steam is generated simultaneously, and part of steam is used in the acetaldehyde rectifying tower 7 and the reboiler 8 to realize waste heat utilization.
A first medium inlet 21 and a second medium inlet 22 are arranged at the upper end of the coiled tube heat exchanger 2, the first medium inlet 21 is connected with a reaction steam pipeline of the reactor 1, and the second medium inlet 22 is connected with a raw material pipeline.
A third medium inlet 23 and a second medium outlet 24 are arranged at the middle end of the coiled tube heat exchanger 2, the third medium inlet 23 is connected with an ice water pipeline, and the second medium outlet 24 is connected with a feeding pipeline.
The lower end of the coiled tube heat exchanger 2 is provided with a first medium outlet 25 and a third medium outlet 26, the first medium outlet 25 is connected with a storage tank pipeline, and the third medium outlet 26 is connected with an ice machine inlet pipeline.
It should be noted that, there are three medium interfaces on the shell of the tube heat exchanger 2, which are respectively connected with the reactor steam, the raw material and the ice water, the three materials exchange heat in the tube heat exchanger 2 at the same time, the cooled reaction steam is condensed into liquid, and enters the storage tank, the produced low-pressure steam enters the rectifying tower 7 and the reboiler 8 to make waste heat utilization, the preheated raw material enters the reactor 1 to react, and the ice water enters the ice maker 3 to cool after heat exchange, thereby realizing multi-strand material heat exchange, saving condensing equipment and reducing cost.
The falling film absorption tower 5 comprises a tower body 51, an air inlet 52, an air outlet 53 and a liquid outlet 54, wherein the air outlet 53 is arranged at the upper end of the tower body 51, the air inlet 52 is arranged at the lower end of the tower body 51, the air inlet 52 is connected with the first medium outlet 25 through a pipeline, the liquid outlet 54 is arranged at the bottom of the tower body 51, and the liquid outlet 54 is connected with the dilute acetaldehyde storage tank 6 through a pipeline.
The inner side of the tower body 51 is also provided with a packing layer 55, and the packing layers 55 are vertically distributed in the tower body 51 at equal intervals.
The cooled acetaldehyde mixed steam enters the bottom of the falling film absorption tower 5 at a high wind speed, absorption liquid water is sprayed into the bottom of the falling film absorption tower 5, the acetaldehyde mixed gas rises along the surface of the filler through the filler layer 55 and contacts with the water on the filler layer 55, so that acetaldehyde is absorbed into the water to form a liquid film which falls from the top of the tower, the liquid film resistance in the falling process can be divided into a plurality of thin sheets, and the liquid flows out of the bottom of the falling film absorption tower 5, enters the dilute acetaldehyde storage tank 6 and is recycled again.
In summary, according to the acetaldehyde system energy-saving device, ethanol and cooling water are respectively pumped into the coiled tube type heat exchanger 2 through the pipeline connection, steam from the reactor 1 also enters the coiled tube type heat exchanger 2 to cool, multiple strands of materials are subjected to simultaneous heat exchange, raw materials enter the reactor 1 after being preheated, the cooled materials enter the dilute acetaldehyde storage tank 6, gas enters the falling film absorption tower 5 and simultaneously low-pressure steam is generated, the partial steam is used in the acetaldehyde rectifying tower 7 and the reboiler 8, waste heat utilization is realized, the problem of equipment redundancy is solved by adopting the coiled tube type heat exchanger 2, simultaneous heat exchange of multiple strands of materials is realized, the original four-stage condensation effect is achieved, the absorption effect is enhanced by adopting the falling film absorption tower 5, the cost required by acetaldehyde rectification is reduced, the cost of circulating water and cooling of the ice maker 3 is reduced, the direct interception of acetaldehyde in the earlier stage is realized, the flow is simple, the heat energy is fully utilized, the problem of less acetaldehyde condensation is solved, meanwhile, the production cost of acetaldehyde is reduced, and the acetaldehyde rectification is faster.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an acetaldehyde system economizer, includes reactor (1), around tubular heat exchanger (2), ice maker (3), intermediate tank (4), falling film absorption tower (5), rare acetaldehyde storage tank (6), rectifying column (7) and reboiler (8), its characterized in that: the reactor (1) is connected with a coiled pipe heat exchanger (2) through a pipeline, the coiled pipe heat exchanger (2) is connected with an ice maker (3), a middle tank (4) and a falling film absorption tower (5) through a pipeline, the middle end of the coiled pipe heat exchanger (2) is connected with the lower end of the reactor (1) through a pipeline, the falling film absorption tower (5) is connected with a rectifying tower (7) through a pipeline, the falling film absorption tower (5) is connected with a dilute acetaldehyde storage tank (6) through a pipeline, the coiled pipe heat exchanger (2) is connected with a reboiler (8) through a pipeline, and the reboiler (8) is connected with the rectifying tower (7) through a pipeline.
2. The acetaldehyde system economizer of claim 1, wherein: the upper end of the coiled tube type heat exchanger (2) is provided with a first medium inlet (21) and a second medium inlet (22), the first medium inlet (21) is connected with a reaction steam pipeline of the reactor (1), and the second medium inlet (22) is connected with a raw material pipeline.
3. The acetaldehyde system economizer of claim 2, wherein: the middle end of the coiled tube heat exchanger (2) is provided with a third medium inlet (23) and a second medium outlet (24), the third medium inlet (23) is connected with an ice water pipeline, and the second medium outlet (24) is connected with a feeding pipeline.
4. An acetaldehyde system economizer according to claim 3 wherein: the lower end of the coiled tube type heat exchanger (2) is provided with a first medium outlet (25) and a third medium outlet (26), the first medium outlet (25) is connected with a storage tank pipeline, and the third medium outlet (26) is connected with an ice machine inlet pipeline.
5. The acetaldehyde system economizer of claim 4, wherein: the falling film absorption tower (5) comprises a tower body (51), an air inlet (52), an air outlet (53) and a liquid outlet (54), wherein the air outlet (53) is formed in the upper end of the tower body (51), the air inlet (52) is formed in the lower end of the tower body (51), the air inlet (52) is connected with the first medium outlet (25) through a pipeline, the liquid outlet (54) is formed in the bottom of the tower body (51), and the liquid outlet (54) is connected with the dilute acetaldehyde storage tank (6) through a pipeline.
6. The acetaldehyde system economizer of claim 5, wherein: the inner side of the tower body (51) is also provided with a packing layer (55), and the packing layer (55) is vertically distributed in the tower body (51) at equal intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321439457.3U CN220370996U (en) | 2023-06-07 | 2023-06-07 | Acetaldehyde system economizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321439457.3U CN220370996U (en) | 2023-06-07 | 2023-06-07 | Acetaldehyde system economizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220370996U true CN220370996U (en) | 2024-01-23 |
Family
ID=89569164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321439457.3U Active CN220370996U (en) | 2023-06-07 | 2023-06-07 | Acetaldehyde system economizer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220370996U (en) |
-
2023
- 2023-06-07 CN CN202321439457.3U patent/CN220370996U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105403067B (en) | One kind utilizes industrial exhaust heat condensed water demisting cooling tower | |
| CN110143850A (en) | The not energy-saving methanol multi-effect distillation method of the single column steam drive of by-product fusel oil | |
| CN110105216B (en) | Self-backheating rectification method and device | |
| CN201735201U (en) | Rectifying tower top gaseous phase heat recycling device | |
| CN101187523A (en) | Preparation method for obtaining super high pure oxygen | |
| CN200954401Y (en) | Energy-saving distillation apparatus | |
| CN204301555U (en) | One utilizes industrial exhaust heat condensed water demist cooling tower | |
| CN100491245C (en) | Method for preparing liquid carbon dioxide in foodstuff level by using tail gas of cement kiln | |
| CN220370996U (en) | Acetaldehyde system economizer | |
| CN106477577B (en) | A kind of device and production method of heat pump distillation production ultra-high purity carbon dioxide | |
| CN101186557B (en) | Tower outside heat exchange device for menthol producing technique | |
| CN206126859U (en) | Pure carbon dioxide's of heat pump distillation production superelevation device | |
| CN104587820B (en) | Desulfuration solution negative pressure parsing technique | |
| CN210559373U (en) | Novel hydrogen fluoride preparation device capable of realizing energy conservation by using acid cooling mode | |
| CN203700298U (en) | Waste heat recovery and utilization system used for semi-water gas of ammonia synthesis | |
| CN203474692U (en) | Efficient and energy-saving preparation device of acetyl acetone | |
| CN210331709U (en) | Self-backheating rectification device | |
| CN101774544B (en) | Method for recycling tail gas generated in production of polycrystalline silicon | |
| CN206366208U (en) | A kind of methanol recovery device | |
| CN202315640U (en) | Production and tail gas absorption device for phthalic anhydride | |
| CN106679243B (en) | Refrigerating system capable of reducing liquid ammonia consumption | |
| CN105112107A (en) | Waste heat recovery and utilization system for semi-water gas in ammonia synthesizing process | |
| CN205965067U (en) | Two thick tower differential pressure distillation alcohol economizer system | |
| CN217119362U (en) | Device for cleaning, rectifying and purifying flue gas liquid carbon dioxide | |
| CN2116523U (en) | Absorption condensation tower for manufacturing formaldehyde |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |