CN202808650U - Propionaldehyde refining and purifying system - Google Patents
Propionaldehyde refining and purifying system Download PDFInfo
- Publication number
- CN202808650U CN202808650U CN201220478349.2U CN201220478349U CN202808650U CN 202808650 U CN202808650 U CN 202808650U CN 201220478349 U CN201220478349 U CN 201220478349U CN 202808650 U CN202808650 U CN 202808650U
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- China
- Prior art keywords
- propionic aldehyde
- propionaldehyde
- pressure evaporation
- refining
- low pressure
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Abstract
The utility model discloses a propionaldehyde refining and purifying system. The system comprises a gas-liquid separation device, a low-pressure evaporation device and a dehydration unit, wherein a liquid material outlet of the gas-liquid separation device is connected with a material inlet of the low-pressure evaporation device by a cooling device, and a vapor outlet of the low-pressure evaporation device is connected with the dehydration unit by the cooling device. The propionaldehyde refining and purifying system has the beneficial effects that the utilization rate of raw materials is improved, the cyclic utilization of water resources is implemented, 1000 tons of water can be saved every year, and the discharge of waste liquid can be reduced by 1600 tons every year; the purity of propionaldehyde products can be improved, and the water content of the propionaldehyde products can be reduced; and the content of propionic acid of the propionaldehyde products can be reduced, and thus the utilization rate of ethylene serving as a raw material is improved.
Description
Technical field
The utility model relates to a kind of chemical production equipment, relates in particular to the refining purification system of a kind of propionic aldehyde.
Background technology
Propionic aldehyde is the quite active low-carbon (LC) aldehydes of a kind of chemical property, by ethene low pressure through oxo process propionic aldehyde processed, the low pressure oxo synthesis becomes main method and the developing direction that propionic aldehyde is produced gradually, be mainly the aqueous phase that dissolubility rhodium complex composite catalyst exists, with rare ethene (containing other gaseous olefin and gaseous alkanes and rare gas element) and carbon monoxide and hydrogen reaction, the preparation propionic aldehyde.
The chemical property of propionic aldehyde is quite active, since its easy oxidation, easily condensation, so in the industrial building-up process of propionic aldehyde, have not reaction of ethylene raw, have the generation of propionic aldehyde base polymer, easy and the water formation azeotrope of propionic aldehyde can contain the impurity such as moisture in thick propionic aldehyde.
The utility model content
The utility model purpose: the purpose of this utility model is for the deficiencies in the prior art, provides a kind of propionic aldehyde to make with extra care purification system, recycles ethene solution gas and moisture in the thick propionic aldehyde, reduces content and the propionic aldehyde class polycondensate of thick propionic aldehyde oxide compound.
Technical scheme: a kind of propionic aldehyde described in the utility model is made with extra care purification system, comprise gas-liquid separation device, low pressure evaporation unit and dewatering unit, the liquid material outlet of described gas-liquid separation device is connected by the material inlet of refrigerating unit with the low pressure evaporation unit, the vapour outlet of low pressure evaporation unit is connected with the propionic aldehyde storage tank by refrigerating unit, and described propionic aldehyde storage tank is connected with dewatering unit.
Further, described refrigerating unit is water cooler.
Further, the outlet of the liquid material of described low pressure evaporation unit is connected with the reactor of producing propionic aldehyde.
Further, described gas-liquid separation device is stripping tower.
Further, described low pressure evaporation unit is rectifying tower.
Concrete purification process is: from the thick propionic aldehyde of the light constituents such as the ethene that contains dissolving on ethene absorption tower and ethane, converge with direct thick propionic aldehyde from thick propionic aldehyde storage tank, enter together gas-liquid separation device, ethene is reclaimed out in extraction, the propionic aldehyde liquid material of gas-liquid separation device catalyst-solvent out enters the low pressure evaporation unit after the water cooler cooling, after heat transfer tube in the low pressure evaporation unit is heated from top to down, propionic aldehyde wherein is vaporized, out after the refrigerating unit cooling, dewater by dewatering unit from vapour outlet, obtain refining propionic aldehyde.
The utility model compared with prior art, its beneficial effect is: (1) improves raw material availability, realizes the recycle of water resources, 1000 tons of annual water saving reduce 1600 tons of discharging of waste liquid amounts; (2) purity of raising product propionic aldehyde, the water-content of reduction product propionic aldehyde; (3) propionic acid content of reduction product propionic aldehyde improves raw material ethene utilization ratio and improves.
Description of drawings
Fig. 1 is the structural representation of embodiment;
Embodiment
The below is elaborated to technical solutions of the utility model, but protection domain of the present utility model is not limited to described embodiment.
As described in Figure 1, a kind of propionic aldehyde is made with extra care purification system, comprises stripping tower 1, heat exchanger, propionic aldehyde storage tank, infusion pump, rectifying tower 2, propionic aldehyde film dewatering unit 3; Described heat exchanger comprises the first heat exchanger 4, the second heat exchanger 5 and the 3rd heat exchanger 6, described infusion pump comprises the first infusion pump 7, the second infusion pump 8 and the 3rd infusion pump 9, and described propionic aldehyde storage tank comprises the first propionic aldehyde storage tank 10 and the second propionic aldehyde storage tank 11;
The liquid material outlet is connected with the fluid inlet of the first propionic aldehyde storage tank 10 by the first heat exchanger 4 at the bottom of the tower of stripping tower 1, its liquid outlet is connected with the steam-in of rectifying tower 2 through the second heat exchanger 5 by the second infusion pump 8, the overhead vapours outlet of rectifying tower 2 is connected with the second propionic aldehyde storage tank 11 by the 3rd heat exchanger 6, its liquid outlet is connected with the phegma import of propionic aldehyde film dewatering unit 3 and rectifying tower 2 respectively by the 3rd infusion pump 9, and the first synthesis reactor that liquid pumps into the production propionic aldehyde at the bottom of the tower of rectifying tower 2 recycles.
During purification, thick propionic aldehyde from light constituents such as the ethene that contains dissolving on ethene absorption tower and ethane, converge with direct thick propionic aldehyde from thick propionic aldehyde storage tank, pump into stripping tower 1 through the first infusion pump 7 together, ethene is reclaimed out in extraction, the propionic aldehyde liquid material of the catalyst-solvent of phase-splitting enters the first propionic aldehyde storage tank 10 after 4 coolings of the first heat exchanger, then pumping into the second heat exchanger 5 through the second infusion pump 8 evaporates by thermal oil, steam enters rectifying tower 2, the propionic aldehyde of gasification enters the second propionic aldehyde storage tank 11 from the overhead vapours outlet by 6 coolings of the 3rd heat exchanger, a propionic aldehyde part wherein obtains refining propionic aldehyde after 3 dehydrations of the 3rd infusion pump 9 input propionic aldehyde film dewatering units, a part passes back into rectifying tower 2 through the 3rd infusion pump.
As mentioned above, although the specific preferred embodiment of reference has represented and has explained the utility model that it shall not be construed as the restriction to the utility model self.Under the spirit and scope prerequisite of the present utility model that does not break away from the claims definition, can make in the form and details various variations to it.
Claims (5)
1. a propionic aldehyde is made with extra care purification system, it is characterized in that, comprise gas-liquid separation device, low pressure evaporation unit and dewatering unit, the liquid material outlet of described gas-liquid separation device is connected by the material inlet of refrigerating unit with the low pressure evaporation unit, and the vapour outlet of low pressure evaporation unit is connected with dewatering unit by refrigerating unit.
2. the refining purification system of propionic aldehyde according to claim 1 is characterized in that described refrigerating unit is water cooler.
3. the refining purification system of propionic aldehyde according to claim 1 is characterized in that, the liquid material outlet of described low pressure evaporation unit is connected with the reactor of producing propionic aldehyde.
4. the refining purification system of propionic aldehyde according to claim 1 is characterized in that described gas-liquid separation device is stripping tower.
5. the refining purification system of propionic aldehyde according to claim 1 is characterized in that described low pressure evaporation unit is rectifying tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220478349.2U CN202808650U (en) | 2012-09-19 | 2012-09-19 | Propionaldehyde refining and purifying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220478349.2U CN202808650U (en) | 2012-09-19 | 2012-09-19 | Propionaldehyde refining and purifying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202808650U true CN202808650U (en) | 2013-03-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220478349.2U Expired - Lifetime CN202808650U (en) | 2012-09-19 | 2012-09-19 | Propionaldehyde refining and purifying system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202808650U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086387A (en) * | 2014-07-09 | 2014-10-08 | 南京荣欣化工有限公司 | Method and device for purifying propionaldehyde |
-
2012
- 2012-09-19 CN CN201220478349.2U patent/CN202808650U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104086387A (en) * | 2014-07-09 | 2014-10-08 | 南京荣欣化工有限公司 | Method and device for purifying propionaldehyde |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20181218 Address after: Room 1129, 11th floor, Traffic Bureau Building, 95 Yingbin Avenue, Xinhua Street, Huadu District, Guangzhou City, Guangdong 510800 Patentee after: GUANGZHOU XINSHIJI NEW ENERGY DEVELOPMENT Co.,Ltd. Address before: 224211 No. 168-095 Fangshui Road, Chemical Industry Park, Liuhe District, Nanjing City, Jiangsu Province Patentee before: Nanjing RongXin Chemical Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201216 Address after: 210047 -095, Fang Shui Road, Nanjing Chemical Industrial Park, Nanjing, Jiangsu, China, 168 Patentee after: Nanjing RongXin Chemical Co.,Ltd. Address before: Room 1129, 11th floor, Traffic Bureau Building, 95 Yingbin Avenue, Xinhua Street, Huadu District, Guangzhou City, Guangdong 510800 Patentee before: GUANGZHOU XINSHIJI NEW ENERGY DEVELOPMENT Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |
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| CX01 | Expiry of patent term |