CN215049788U - Epoxy propane pre-separation removes aldehyde device - Google Patents
Epoxy propane pre-separation removes aldehyde device Download PDFInfo
- Publication number
- CN215049788U CN215049788U CN202120951726.9U CN202120951726U CN215049788U CN 215049788 U CN215049788 U CN 215049788U CN 202120951726 U CN202120951726 U CN 202120951726U CN 215049788 U CN215049788 U CN 215049788U
- Authority
- CN
- China
- Prior art keywords
- pipe
- aldehyde
- separation
- valve
- pump
- 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
Images
Landscapes
- Epoxy Compounds (AREA)
Abstract
The utility model relates to the field of chemical industry, and discloses an epoxy propane pre-separation aldehyde-removing device, which comprises an aldehyde-removing additive storage tank, a premixing tank, a mixing tank, a pre-separation tower, a reboiler, an aldehyde-removing additive delivery pump, an epoxidation reaction product feed pump, a mixed liquid transfer pump, a pre-separation circulating pump, a pipeline and a valve; the upper part of the inner cavity of the premixing tank is provided with a spray head mechanism, and the middle part of the inner cavity of the premixing tank is provided with a first spray pipe mechanism; the inner cavity of the mixing tank is provided with a stirring mechanism driven by a motor; and a second spray pipe mechanism is arranged at the upper part of the pre-separation tower. The utility model adopts the means of combining spraying premixing and fine stirring to evenly add the aldehyde-removing additive into the epoxidation reaction product; the method of combining reboiler heating and fluid jet recirculation is adopted to effectively separate the aldehyde impurities from the epoxidation reaction product, and the product quality is greatly improved.
Description
Technical Field
The utility model relates to a chemical industry field, concretely relates to separation removes aldehyde device in advance of epoxypropane.
Background
Propylene oxide is a very important organic compound starting material, second only to polypropylene and acrylonitrile, the third largest propylene-based derivative. At present, the world production methods of propylene oxide mainly comprise a chlorohydrin method, an ethylbenzene co-oxidation method and a hydrogen peroxide direct oxidation method. The chlorohydrin method and the ethylbenzene co-oxidation method have the disadvantages of high process pollution and high industrial water treatment cost, and are listed by the national development and improvement committee to forbid the use of new projects. The direct hydrogen peroxide oxidation method is characterized in that a titanium silicalite molecular sieve is used as a catalyst, methanol is used as a solvent, and propylene and hydrogen peroxide enter a catalyst bed layer in a liquid phase system to perform oxidation reaction under proper reaction conditions to produce propylene oxide and water; the process flow is relatively simple, no by-product is generated, the subsequent treatment equipment and facilities of the product are reduced, the whole production process basically has no pollution, and the process flow is a novel main production route of the future propylene oxide product. However, in the existing production process, the aldehyde removal means is not in place, so that the value of the epoxypropane aldehyde is higher, and the product quality is influenced. For example, the utility model (CN 212293380U) "an apparatus for producing propylene oxide" does not mention the problem of how to remove aldehydes.
SUMMERY OF THE UTILITY MODEL
To the technical problem, the utility model provides an epoxy propane is separation aldehyde device in advance.
The technical scheme is as follows: comprises an aldehyde-removing additive storage tank, a premixing tank, a mixing tank, a pre-separation tower, a reboiler, an aldehyde-removing additive delivery pump, an epoxidation reaction product feed pump, a mixed liquor transfer pump, a pre-separation circulating pump, a pipeline and a valve; the upper part of the inner cavity of the premixing tank is provided with a spray head mechanism, and the middle part of the inner cavity of the premixing tank is provided with a first spray pipe mechanism; the inner cavity of the mixing tank is provided with a stirring mechanism driven by a motor; a second spray pipe mechanism is arranged at the upper part of the pre-separation tower; the valves comprise a first valve, a second valve, a third valve, a fourth valve, a fifth valve and a sixth valve; the pipeline comprises an aldehyde-removing additive conveying pipe, an epoxidation reaction product feeding pipe, a premixed liquid discharging pipe, a mixed liquid discharging pipe, a pre-separation lower discharging pipe, a pre-separation circulating pipe and a pre-separation upper discharging pipe; the head end of the aldehyde-removing additive conveying pipe is connected with the bottom of the aldehyde-removing additive storage tank, the tail end of the aldehyde-removing additive conveying pipe is connected with a spray head mechanism of the premixing tank, and a first valve and an aldehyde-removing additive conveying pump are sequentially arranged on a pipeline; the head end of the epoxidation reaction product feeding pipe is connected with an outlet of the aldehyde-removing additive conveying pump, and the tail end of the epoxidation reaction product feeding pipe is connected with the first spray pipe mechanism; the head end of the premixed liquid discharging pipe is connected with a discharge hole at the bottom of the premixed tank, the tail end of the premixed liquid discharging pipe is connected with a feed inlet at the upper part of the mixing tank, and a second valve is arranged on a pipeline; the head end of the mixed liquid discharge pipe is connected with a discharge hole at the bottom of the mixed tank, the tail end of the mixed liquid discharge pipe is connected with a feed hole in the middle of the pre-separation tower, and a third valve and a mixed liquid transfer pump are sequentially arranged on a pipeline; the head end of the discharge pipe below the pre-separation is connected with a discharge hole at the bottom of the pre-separation tower, and a fourth valve is arranged on a pipeline; one end of the pre-separation circulating pipe is connected with the lower part of the pre-separation tower, the other end of the pre-separation circulating pipe is connected with the second spray pipe mechanism, and a fifth valve, a pre-separation circulating pump and a reboiler are sequentially arranged on a pipeline; the head end of the pre-separation upper discharge pipe is connected with a discharge port at the top of the pre-separation tower, and a sixth valve is installed on a pipeline.
The spray head mechanism comprises a connecting pipe and three fan-shaped nozzles uniformly arranged below the connecting pipe.
The first spray pipe mechanism and the second spray pipe mechanism are both provided with a plurality of liquid outlet heads on the lower side of the transverse pipe.
The stirring mechanism comprises a rotating shaft and a plurality of T-shaped stirring blades arranged around the rotating shaft.
The aldehyde-removing additive delivery pump, the epoxidation reaction product feeding pump, the mixed liquid transfer pump and the pre-separation circulating pump are all centrifugal pumps.
The overflowing component of the centrifugal pump is made of fluoroplastic.
The utility model discloses a main beneficial technological effect as follows:
the method combines spray premixing and fine stirring to uniformly add the aldehyde-removing additive into the epoxidation reaction product, thereby laying a good foundation for improving the aldehyde-removing effect; the method combines the heating of a reboiler and the fluid jet recirculation to fully react the aldehyde removing additive with the aldehyde impurities in the epoxidation reaction product, so that the aldehyde impurities are effectively separated from the epoxidation reaction product; the aldehyde value of the product epoxypropane is obviously reduced, the product purity is increased from the original 99.90 percent to 99.99 percent, and the product quality is greatly improved.
Drawings
FIG. 1 is a schematic view of the structure layout and basic flow of the present invention;
in the figure: 1-an aldehyde-removing additive storage tank, 2-a first valve, 3-an aldehyde-removing additive conveying pipe, 4-an aldehyde-removing additive conveying pump, 5-a premixing tank, 6-a connecting pipe, 7-a first spray pipe mechanism, 8-an epoxidation reaction product feeding pipe, 9-an epoxidation reaction product feeding pump, 10-a premixing liquid discharging pipe, 11-a second valve, 12-a mixing tank, 13-a third valve, 14-a rotating shaft, 15-T-shaped stirring blades, 16-a motor, 17-a mixed liquid transferring pump, 18-a mixed liquid discharging pipe, 19-a fourth valve, 20-a pre-separation lower discharging pipe, 21-a fifth valve, 22-a pre-separation circulating pump, 23-a pre-separation circulating pipe, 24-a reboiler and 25-a second spray pipe mechanism, 26-a pre-separation tower, 27-a sixth valve, 28-a pre-separation upper discharge pipe and 29-a fan-shaped nozzle.
Detailed Description
The present invention will be described in detail below with reference to the following examples and the accompanying drawings.
Example 1
See fig. 1. The utility model provides an epoxy propane preseparation removes aldehyde device, includes except that aldehyde additive storage tank 1, mixes jar 5 in advance, blending tank 12, preseparation tower 26, reboiler 24, except that aldehyde additive delivery pump 4, epoxidation reaction product charge pump 9, mixed liquor transfer pump 17, preseparation circulating pump 22, pipeline and valve. The upper part of the inner cavity of the premixing tank 5 is provided with a spray head mechanism, and the middle part is provided with a first spray pipe mechanism 7. The inner cavity of the mixing tank 12 is provided with a stirring mechanism driven by a motor 16. The upper part of the pre-separation tower 26 is provided with a second nozzle mechanism 25. The valves include a first valve 2, a second valve 11, a third valve 13, a fourth valve 19, a fifth valve 21, and a sixth valve 27. The pipeline comprises an aldehyde-removing additive conveying pipe 3, an epoxidation reaction product feeding pipe 8, a premixed liquid discharging pipe 10, a mixed liquid discharging pipe 18, a pre-separation lower discharging pipe 20, a pre-separation circulating pipe 23 and a pre-separation upper discharging pipe 28. The head end of the aldehyde-removing additive conveying pipe 3 is connected with the bottom of the aldehyde-removing additive storage tank 1, the tail end of the aldehyde-removing additive conveying pipe is connected with a spray head mechanism of the premixing tank 5, and the first valve 2 and the aldehyde-removing additive conveying pump 4 are sequentially installed on the pipeline. The head end of the epoxidation reaction product feed pipe 8 is connected to the outlet of the ring oxidation reaction product feed pump 9, and the tail end is connected to the first nozzle means 7. The head end of the premixed liquid discharging pipe 10 is connected with a discharge hole at the bottom of the premixed tank 5, the tail end of the premixed liquid discharging pipe is connected with a feed inlet at the upper part of the mixing tank 12, and a second valve 11 is installed on a pipeline. The head end of the mixed liquid discharging pipe 18 is connected with the bottom discharging hole of the mixing tank 12, the tail end is connected with the middle feeding hole of the pre-separation tower 26, and the third valve 13 and the mixed liquid transferring pump 17 are sequentially arranged on the pipeline. The head end of a discharge pipe 20 below the pre-separation is connected with a discharge hole at the bottom of the pre-separation tower 26, and a fourth valve 19 is arranged on a pipeline. One end of the pre-separation circulating pipe 23 is connected with the lower part of the pre-separation tower 26, the other end is connected with the second spray pipe mechanism 25, and the fifth valve 21, the pre-separation circulating pump 22 and the reboiler 24 are sequentially arranged on the pipeline. The head end of a pre-separation upper discharge pipe 28 is connected with a discharge port at the top of the pre-separation tower 26, and a sixth valve 27 is arranged on a pipeline.
Example 2
See fig. 1. An epoxy propane pre-separation aldehyde-removing device is based on the technical scheme described in embodiment 1, and a spray head mechanism comprises a connecting pipe 6 and three fan-shaped nozzles 29 uniformly arranged below the connecting pipe. The fan-shaped nozzle 29 has large and smooth spraying channel, high impact force, uniform spraying and difficult blockage.
Example 3
See fig. 1. The utility model provides an epoxy propane is separation formaldehyde removal device in advance, on the technical scheme basis that embodiment 1 recorded, first spray tube mechanism 7 and second spray tube mechanism 25 all adopt violently the pipe downside to set up a plurality of liquid heads, and this kind of design simple structure, the hydrojet is smooth and easy, and efficiency is higher.
Example 4
See fig. 1. On the basis of the technical scheme of embodiment 1, the stirring mechanism comprises a rotating shaft 14 and a plurality of T-shaped stirring blades 15 arranged around the rotating shaft 14. The T-shaped stirring blades 15 stir surrounding liquid vertically and horizontally in the process of rotating along with the rotating shaft 14, so that the liquid is favorably and fully mixed.
Example 5
See fig. 1. An aldehyde device is pre-separated from propylene oxide, on the basis of the technical scheme recorded in the embodiment 1, a delivery pump 4 for aldehyde-removing additives, a feeding pump 9 for epoxidation reaction products, a transfer pump 17 for mixed liquid and a pre-separation circulating pump 22 are all centrifugal pumps; the overflowing part of the centrifugal pump adopts fluoroplastic, so that the corrosion resistance of the centrifugal pump is enhanced, and the service life of the centrifugal pump is prolonged.
The basic working principle of the utility model is as follows:
the aldehyde-removing additive is usually based on an organic substance containing amine groups. The prepared formaldehyde-removing additive solution is stored in a formaldehyde-removing additive storage tank 1. When in operation, the formaldehyde-removing additive is pumped into the premixing tank 5 through the formaldehyde-removing additive delivery pump 4 and is sprayed downwards through the fan-shaped nozzle 29; the epoxidation reaction product is pumped into the premixing tank 5 through an epoxidation reaction product feeding pump 9 and is downwards sprayed out from a liquid outlet head of the first spray pipe mechanism 7; the aldehyde-removing additive and the epoxidation reaction product are preliminarily mixed in a premixing tank 5 to form a premixing liquid; after the premixed solution flows from the premixing tank 5 to the mixing tank 12, the premixed solution is fully mixed under the longitudinal and transverse stirring of the T-shaped stirring blades 15 to form a mixed solution; the mixed liquid is pumped into a pre-separation tower 26 through a mixed liquid transfer pump 17; the mixed liquid in the pre-separation tower 26 is circularly heated through a reboiler 24, and the mixed liquid is sprayed downwards from a liquid outlet head of the second spray pipe mechanism 25 in the pre-separation tower 26; the mixed liquid is separated in a pre-separation tower 26, the relatively pure propylene oxide formed after evaporation flows out through a pre-separation upper discharge pipe 28 and enters a subsequent treatment process, and a product generated by the reaction of the aldehyde removing additive and the aldehyde impurities and residues of solvent methanol and the like flow out through a pre-separation lower discharge pipe 20 and enter the subsequent treatment process.
Claims (6)
1. The utility model provides an epoxy propane preseparation removes aldehyde device which characterized in that: comprises an aldehyde-removing additive storage tank, a premixing tank, a mixing tank, a pre-separation tower, a reboiler, an aldehyde-removing additive delivery pump, an epoxidation reaction product feed pump, a mixed liquor transfer pump, a pre-separation circulating pump, a pipeline and a valve; the upper part of the inner cavity of the premixing tank is provided with a spray head mechanism, and the middle part of the inner cavity of the premixing tank is provided with a first spray pipe mechanism; the inner cavity of the mixing tank is provided with a stirring mechanism driven by a motor; a second spray pipe mechanism is arranged at the upper part of the pre-separation tower; the valves comprise a first valve, a second valve, a third valve, a fourth valve, a fifth valve and a sixth valve; the pipeline comprises an aldehyde-removing additive conveying pipe, an epoxidation reaction product feeding pipe, a premixed liquid discharging pipe, a mixed liquid discharging pipe, a pre-separation lower discharging pipe, a pre-separation circulating pipe and a pre-separation upper discharging pipe; the head end of the aldehyde-removing additive conveying pipe is connected with the bottom of the aldehyde-removing additive storage tank, the tail end of the aldehyde-removing additive conveying pipe is connected with a spray head mechanism of the premixing tank, and a first valve and an aldehyde-removing additive conveying pump are sequentially arranged on a pipeline; the head end of the epoxidation reaction product feeding pipe is connected with an outlet of the epoxidation reaction product feeding pump, and the tail end of the epoxidation reaction product feeding pipe is connected with the first spray pipe mechanism; the head end of the premixed liquid discharging pipe is connected with a discharge hole at the bottom of the premixed tank, the tail end of the premixed liquid discharging pipe is connected with a feed inlet at the upper part of the mixing tank, and a second valve is arranged on a pipeline; the head end of the mixed liquid discharge pipe is connected with a discharge hole at the bottom of the mixed tank, the tail end of the mixed liquid discharge pipe is connected with a feed hole in the middle of the pre-separation tower, and a third valve and a mixed liquid transfer pump are sequentially arranged on a pipeline; the head end of the discharge pipe below the pre-separation is connected with a discharge hole at the bottom of the pre-separation tower, and a fourth valve is arranged on a pipeline; one end of the pre-separation circulating pipe is connected with the lower part of the pre-separation tower, the other end of the pre-separation circulating pipe is connected with the second spray pipe mechanism, and a fifth valve, a pre-separation circulating pump and a reboiler are sequentially arranged on a pipeline; the head end of the pre-separation upper discharge pipe is connected with a discharge port at the top of the pre-separation tower, and a sixth valve is installed on a pipeline.
2. The device for pre-separating and removing aldehyde from propylene oxide according to claim 1, wherein: the spray head mechanism comprises a connecting pipe and three fan-shaped nozzles uniformly arranged below the connecting pipe.
3. The device for pre-separating and removing aldehyde from propylene oxide according to claim 1, wherein: the first spray pipe mechanism and the second spray pipe mechanism are both provided with a plurality of liquid outlet heads on the lower side of the transverse pipe.
4. The device for pre-separating and removing aldehyde from propylene oxide according to claim 1, wherein: the stirring mechanism comprises a rotating shaft and a plurality of T-shaped stirring blades arranged around the rotating shaft.
5. The device for pre-separating and removing aldehyde from propylene oxide according to claim 1, wherein: the aldehyde-removing additive delivery pump, the epoxidation reaction product feeding pump, the mixed liquid transfer pump and the pre-separation circulating pump are all centrifugal pumps.
6. The device for pre-separating and removing aldehyde from propylene oxide according to claim 5, wherein: the overflowing component of the centrifugal pump is made of fluoroplastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120951726.9U CN215049788U (en) | 2021-05-07 | 2021-05-07 | Epoxy propane pre-separation removes aldehyde device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120951726.9U CN215049788U (en) | 2021-05-07 | 2021-05-07 | Epoxy propane pre-separation removes aldehyde device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215049788U true CN215049788U (en) | 2021-12-07 |
Family
ID=79108947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120951726.9U Active CN215049788U (en) | 2021-05-07 | 2021-05-07 | Epoxy propane pre-separation removes aldehyde device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215049788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768613A (en) * | 2022-05-09 | 2022-07-22 | 新疆晶硕新材料有限公司 | Material mixing system |
-
2021
- 2021-05-07 CN CN202120951726.9U patent/CN215049788U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114768613A (en) * | 2022-05-09 | 2022-07-22 | 新疆晶硕新材料有限公司 | Material mixing system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN215049788U (en) | Epoxy propane pre-separation removes aldehyde device | |
| WO2022198873A1 (en) | Octanol production system and method | |
| EP2804689B1 (en) | Apparatus and method for separation of hydrocarbons from hydrocarbon-containing produced water | |
| CN113058517B (en) | Micro-interface preparation device and method for butanol and octanol | |
| CN104245075B (en) | Extraction column and process for use thereof | |
| CN110787766B (en) | Tower type reaction device and process for preparing fatty acid butyl ester | |
| CN113045387A (en) | Reaction system and method for preparing butanol and octanol through propylene carbonylation | |
| CN1894187A (en) | Improvements in or relating to hydroformylation | |
| EP2938416B1 (en) | Apparatus and method for separation of oil from oil-containing produced water | |
| CN106393339B (en) | Comprehensive reactor for Wooden modifying | |
| CN107098317B (en) | System and method for producing hydrogen peroxide by anthraquinone process | |
| CN201254467Y (en) | Vacuum deaerator | |
| CN105565276B (en) | A kind of efficient oxidation method of Hydrogen Peroxide Production | |
| CN1809523A (en) | Method for producing acetic acid | |
| CN107032306B (en) | System and method for producing hydrogen peroxide by fluidized bed | |
| CN115501824A (en) | Liquid-solid circulating fluidized bed reaction-regeneration system for olefin epoxidation reaction and operation method thereof | |
| CN213286877U (en) | Gas-liquid two-phase continuous reaction crystallization device | |
| CN212819787U (en) | Saponification tower that is difficult for scale deposit | |
| US20220162379A1 (en) | Process and system for producing low-odor polyether polyol | |
| CN209828746U (en) | Catalyst separation device for 5-aminobenzimidazole ketone synthesis | |
| CN109056402B (en) | Continuous multi-stage acid-displacement washing process | |
| CN1136146C (en) | Integrated equipment and process for hydrogen antiraquinone oxidation and H2O2 extraction in producing H2O2 | |
| CN107098318B (en) | Fluidized bed hydrogenation reaction system and hydrogenation reaction method for producing hydrogen peroxide | |
| CN206901767U (en) | A kind of production system of hydrogen peroxide | |
| CN215463365U (en) | Octanol production system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |