CN209790894U - Front purification device for detecting organic acid - Google Patents
Front purification device for detecting organic acid Download PDFInfo
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- CN209790894U CN209790894U CN201822275259.3U CN201822275259U CN209790894U CN 209790894 U CN209790894 U CN 209790894U CN 201822275259 U CN201822275259 U CN 201822275259U CN 209790894 U CN209790894 U CN 209790894U
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- falling film
- film evaporator
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- detecting organic
- organic acids
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Abstract
The utility model discloses a leading purification device for detecting organic acid, include: a plurality of falling film evaporators and gas-liquid separation jar, it is a plurality of falling film evaporators communicate each other, and last falling film evaporator with gas-liquid separation jar intercommunication, just falling film evaporator's lateral wall is equipped with heating device, falling film evaporator's upper end and lower extreme are equipped with feed inlet and defective material export respectively, follow the crude stream that the feed inlet got into flows through falling film evaporator's inner wall, just falling film evaporator is inside to be equipped with scrapes the device, it is hollow drum structure to scrape to sweep the device, and is to locate rotatoryly inside the falling film evaporator, and the outer wall is laid porosely, just it is equipped with one and holds the chamber to scrape the bottom of sweeping the device, hold the chamber through a pump with the feed inlet intercommunication. The utility model relates to a leading purification device for detecting organic acid that purification precision is high, technology is simple and convenient.
Description
Technical Field
The utility model relates to an organic acid and the purification technical field of its derivative especially relate to a leading purification device for detecting organic acid that purification precision is high, technology is simple and convenient.
Background
The organic acid is an important intermediate of organic chemical raw materials and polymers, the purity of the product has a great influence on the quality of a subsequent synthetic product, the existing separation method of the organic acid usually adopts rectification and extraction separation methods, and the purification of the organic acid is completed by a traditional rectification device and an extraction device. The rectification separation by the rectification device has high pressure and temperature, large investment, high energy consumption and low efficiency.
The method for carrying out chemical extraction by adopting the extraction device is easy to proxy new pollution, old impurities are usually removed, and new impurities are brought, the impurities in the organic acid removed by the chemical method are removed by adding a small amount of chemical reagents to react with aldehyde or other impurities in the organic acid, the impurity removing capacity of the method is quite limited, solid residues are generated in the removing process, and the prepared organic acid still cannot meet the production requirement of high-purity organic acid and cannot be industrially used on a large scale. Under the background of the requirements of our country on energy conservation, environmental protection and high efficiency of industrial devices, the development of a novel energy-saving, environmental protection and high-efficiency preposed purification device for detecting organic acid is very important and urgent.
Chinese utility model patent publication No. CN204219812U discloses a device for purifying organic acid, the main components of which include a falling film evaporator and a gas-liquid separation tank, wherein the top of the falling film evaporator is provided with a feed inlet for inputting crude organic acid; the interior of the falling film evaporator is provided with a scraping device and a heating array hall which are communicated; a discharge hole is formed in the bottom of the falling film evaporator and used for outputting the gas-liquid mixture; the discharge hole of the falling film evaporator is communicated with the input port of the gas-liquid separation tank, the gas-liquid separation tank is a vertical tank body, and the input port is arranged in the middle of the gas-liquid separation tank; the top of the gas-liquid separation tank is provided with a gas phase acquisition port for gas phase product acquisition; the bottom of the gas-liquid separation tank is respectively communicated with a liquid-phase circulating pump and a liquid-phase discharging pump; the liquid phase circulating pump is communicated with a feed inlet of the falling film evaporator through a circulating pipeline and is used for passing a liquid phase product which returns to the falling film evaporator for circulating evaporation, and the liquid phase discharging pump is provided with a tailing outlet for collecting the tailing.
In the chinese utility model publication No. CN204219812U, firstly, the falling film evaporator does not disclose how to better ensure that the liquid to be treated uniformly descends in a film shape, and as the application of the falling film evaporator is becoming more and more widespread, the design of the wiping device has an extremely important influence on the performance of the falling film evaporator.
Secondly, the gas phase is gathered mouthful for setting up at the top of gas-liquid separation jar, and this kind of design is easy to be mixed gas phase product and liquid phase product again for the efficiency of separation is not high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a leading purification device for detecting organic acid that purification precision is high, technology is simple and convenient.
In order to realize the purpose, the utility model provides a technical scheme does: disclosed is a pre-purification apparatus for detecting an organic acid, including: a plurality of falling film evaporators and gas-liquid separation jar, it is a plurality of falling film evaporators communicate each other, and last falling film evaporator with gas-liquid separation jar intercommunication, just falling film evaporator's lateral wall is equipped with heating device, falling film evaporator's upper end and lower extreme are equipped with feed inlet and defective material export respectively, follow the crude stream that the feed inlet got into flows through falling film evaporator's inner wall, just falling film evaporator is inside to be equipped with scrapes the device, it is hollow drum structure to scrape to sweep the device, and is to locate rotatoryly inside the falling film evaporator, and the outer wall is laid porosely, just it is equipped with one and holds the chamber to scrape the bottom of sweeping the device, hold the chamber through a pump with the feed inlet intercommunication.
The side wall of the falling film evaporator comprises an inner layer wall and an outer layer wall, an annular space is formed by the inner layer wall and the outer layer wall together, the heating device comprises a heating module and a heat preservation module, and the heating module and the heat preservation module are both arranged in an annular structure and are arranged in the annular space in a sealing mode.
The heating module is a plurality of cylinder heater strips, and one side that the inlayer wall just right the outer wall is equipped with uniformly and is used for holding the holding tank of cylinder heater strip.
The heating device is further connected with a PLC (programmable logic controller) and a temperature sensing device, a probe groove used for accommodating a probe of the temperature sensing device is formed in the inner wall, the temperature sensing device is used for monitoring the temperature inside the falling film evaporator and feeding back the temperature to the PLC, and the PLC is further used for controlling the temperature of the inside of the falling film evaporator.
The temperature control system is characterized by further comprising a temperature display device and a temperature alarm device, wherein the temperature display device and the temperature alarm device are connected with the PLC.
The edge of the hole protrudes a flange towards the inner direction of the falling film evaporator.
The scraping and sweeping device further comprises a motor for driving the scraping and sweeping device to rotate, and the scraping and sweeping device further comprises a PLC and a frequency converter, wherein the PLC controls the rotating speed of the motor through the frequency converter.
The bottom of the falling film evaporator is communicated with the lower part of the gas-liquid separation tank, and a filler for gas-liquid separation is arranged in the gas-liquid separation tank.
The bottom of the containing cavity is provided with a water gap and is connected with a pipeline, and the pipeline is communicated with the feeding hole through the pump.
Compared with the prior art, because the utility model is used for detect among the leading purification device of organic acid, scrape and sweep the device and be hollow drum structure, and be and locate rotatoryly inside the falling film evaporator, and the outer wall is opened and is laid porosely uniformly, just the bottom of scraping and sweeping the device is equipped with one and holds the chamber, hold the chamber through a pump with the feed inlet intercommunication. Therefore, the liquid film with larger thickness on the side wall of the falling film evaporator can be swept, enters the accommodating cavity at the bottom of the sweeping device through the hole, and is returned to the feed inlet through the pump.
The invention will become more apparent from the following description when taken in conjunction with the accompanying drawings which illustrate embodiments of the invention.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a pre-purification apparatus for detecting organic acids according to the present invention.
Fig. 2 is a schematic view of a wiping device of the pre-purification apparatus for detecting organic acids shown in fig. 1.
Fig. 3 is a schematic view of a side wall of the pre-purification apparatus for detecting organic acids shown in fig. 1.
Fig. 4 is a schematic view of an inner wall of a falling film evaporator of the pre-purification apparatus for detecting organic acids shown in fig. 1.
Fig. 5 is a schematic block diagram of a temperature control circuit of the pre-purification apparatus for detecting organic acids shown in fig. 1.
Fig. 6 is a schematic block diagram of a temperature control circuit having a remote monitoring function of the pre-purification apparatus for detecting organic acids shown in fig. 1.
Fig. 7 is a schematic block diagram of a motor control circuit of the pre-purification apparatus for detecting organic acids shown in fig. 1.
Detailed Description
Embodiments of the present invention will now be described with reference to the drawings, wherein like element numerals represent like elements throughout. As described above, as shown in fig. 1 and 2, an embodiment of the present invention discloses a pre-purification apparatus 100 for detecting organic acid, including: the falling-film evaporator comprises falling-film evaporators 1, 2 and 3 and a gas-liquid separation tank 4, wherein the falling-film evaporators 1, 2 and 3 are communicated with each other, the falling-film evaporators 1, 2 and 3 are communicated with the gas-liquid separation tank 4, a heating device 5 is arranged on the side wall of the falling-film evaporator, a feed inlet 6 and a residue outlet 7 are respectively arranged at the upper end and the lower end of each of the falling-film evaporators 1, 2 and 3, a crude product entering from the feed inlet flows through the inner wall of the falling-film evaporator, a scraping device 8 is arranged inside the falling-film evaporator, the scraping device 8 is of a hollow cylindrical structure, the scraping device 8 is of a metal structure and is rotatably arranged inside the falling-film evaporator, holes 9 are uniformly distributed in the outer wall of the falling-film evaporator, an accommodating cavity 10 is arranged at the bottom of the scraping. Since the wiping device 8 is provided in the falling film evaporator in a rotating state all the time, and the wiping device 8 is of a cylindrical structure, the distance between the outer wall of the wiping device and the inner wall of the falling film evaporator is the key for controlling the thickness of the liquid film, the thickness of the liquid film does not exceed the distance, because the wiping device is provided with the hole 9, and therefore the part of the liquid film with the thickness exceeding the distance flows into the accommodating chamber 10 from the hole 9.
In one embodiment, the outer wall of the wiping device 8 is provided with holes which are irregularly arranged on the outer wall of the wiping device 8.
As shown in fig. 3, taking the falling film evaporator 1 as an example, the side wall of the falling film evaporator 1 includes an inner wall 11 and an outer wall 12, and an annular space is formed by the inner wall 11 and the outer wall 12 together, the heating device 5 includes a heating module 51 and a heat preservation module 52, and both the heating module 51 and the heat preservation module 52 are designed into an annular structure and are hermetically arranged in the annular space. The heat preservation module 52 can effectively prevent energy loss, reduce energy consumption and keep the temperature in the falling film evaporator 1 stable.
As shown in fig. 4, the heating module 51 is a plurality of cylindrical heating wires, and the side of the inner wall 11 facing the outer wall is uniformly provided with accommodating grooves 110 for accommodating the cylindrical heating wires. The material of the inner wall 11 of the falling film evaporator 1 needs to be selected from metals with good heat conductivity, and the material of the cylindrical heating wire needs to be made of a material with good resistivity uniformity, so that the uniform heating of all parts of the cylindrical heating wire is ensured.
As shown in fig. 4 and 5, the heating device 5 is further connected to a PLC53 and a temperature sensing device 54, a probe groove 111 for accommodating a probe of the temperature sensing device is formed in the inner wall, the probe groove of the temperature sensing device is arranged in the probe groove 111 in a penetrating manner and senses the temperature in the falling film evaporator 1, so that the temperature sensing device 54 is used for monitoring the temperature inside the falling film evaporator and feeding back the temperature to the PLC53, and the PLC53 further controls the temperature inside the falling film evaporator 1.
As shown in fig. 5, the temperature monitoring device further comprises a temperature display device 55 and a temperature alarm device 56, wherein both the temperature display device 55 and the temperature alarm device 56 are connected with the PLC 53. The start of the temperature alarm device 56 is preset by the PLC53, a target temperature and a fluctuation range thereof are set, and if the target temperature and the fluctuation range exceed the fluctuation range, the temperature alarm device 56 is started, so that a worker can grasp the temperature in the falling film evaporator 1 at any time.
In the embodiment shown in fig. 6, it is different from the embodiment shown in fig. 5 in that: the PLC53 is further connected with a GSM module 57, the GSM module 57 is in communication with the mobile terminal 58, so that temperature information detected by the temperature sensing module 54 can be remotely transmitted to the mobile terminal 58 through the PLC53 and the GSM module 57, particularly when the set temperature alarm device 56 gives an alarm, alarm information can be sent to the mobile terminal 58 through the GSM module 57 at the same time, therefore, a worker can check the temperature information of the falling film evaporator 1 at any time as long as the worker grasps the mobile terminal 58, and the mobile terminal 58 can also control the PLC53 through the GSM module 57. The GSM module 57 used at present refers in particular to a 3G module or a 4G module.
In one embodiment, the edge of the hole 9 projects a flange towards the interior of the falling film evaporator. By means of the flange, it is possible to introduce the liquid swept by the sweeping device 8 through the holes 9 and into the housing chamber 10 by the flange, and if the flange is not provided, since the number of holes 9 on the sweeping device 8 is considerable, the liquid swept by the sweeping device 8 is not easily rapidly introduced into the housing chamber 10, and this may even occur: the liquid entering through the holes 9 located at the upper part flows out through the holes 9 located at the lower part, which is not beneficial to the constant temperature evaporation of the liquid.
As shown in fig. 7, the device further comprises a motor 13 for driving the scraping device 8 to rotate, a PLC14 and a frequency converter 15, wherein the PLC14 controls the rotation speed of the motor 13 through the frequency converter 15. In the embodiments shown in fig. 5, 6, and 7, the PLC53 and the PLC14 may be the same or different.
As shown in fig. 1, the bottom of the falling film evaporator 3 communicates with the lower portion of the gas-liquid separation tank 4, and a packing 16 for gas-liquid separation is provided in the gas-liquid separation tank 4.
In one embodiment, the bottom of the accommodating chamber 10 is provided with a water gap (not shown) and is connected with a pipe, and the pipe is communicated with the feeding hole through a pump.
It should be noted how many falling-film evaporators are required for purifying different organic acids, and how many degrees the temperature in each falling-film evaporator is controlled, are well known to those skilled in the art, and will not be described herein.
Compared with the prior art, combine fig. 1 ~ 7, because the utility model is used for detecting among the leading purification device of organic acid, sweep device 8 is hollow drum structure, and is inside locating falling film evaporator rotatoryly, and the outer wall is opened and is laid porosely 9 evenly, and the bottom of sweeping device 8 is equipped with one and holds chamber 10, holds chamber 10 and communicates with the feed inlet through a pump (not shown on the figure). Therefore, the liquid film with larger thickness on the side wall of the falling film evaporator 3 can be swept, and enters the accommodating cavity 10 at the bottom of the sweeping device 8 through the hole 9 and is returned to the feed inlet by the pump.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the invention, therefore, the invention is not limited thereto.
Claims (9)
1. A pre-purification apparatus for detecting organic acids, comprising: a plurality of falling film evaporators and gas-liquid separation jar, it is a plurality of falling film evaporators communicate each other, and last falling film evaporator with gas-liquid separation jar intercommunication, just falling film evaporator's lateral wall is equipped with heating device, falling film evaporator's upper end and lower extreme are equipped with feed inlet and defective material export respectively, follow the crude stream that the feed inlet got into flows through falling film evaporator's inner wall, just falling film evaporator is inside to be equipped with scrapes the device, it is hollow drum structure to scrape to sweep the device, and is to locate rotatoryly inside the falling film evaporator, and the outer wall is laid porosely, just it is equipped with one and holds the chamber to scrape the bottom of sweeping the device, hold the chamber through a pump with the feed inlet intercommunication.
2. The pre-purification device for detecting organic acids according to claim 1, wherein the side wall of the falling film evaporator comprises an inner wall and an outer wall, the inner wall and the outer wall together form an annular space, the heating device comprises a heating module and a heat preservation module, and the heating module and the heat preservation module are both arranged in an annular structure and are hermetically arranged in the annular space.
3. The pre-purification device for detecting organic acids according to claim 2, wherein the heating module is a plurality of cylindrical heating wires, and a holding groove for holding the cylindrical heating wires is uniformly arranged on the side of the inner layer wall opposite to the outer layer wall.
4. The pre-purification device for detecting organic acids according to claim 3, wherein the heating device is further connected to a PLC and a temperature sensing device, the inner wall is provided with a probe slot for accommodating a probe of the temperature sensing device, the temperature sensing device is used for monitoring the temperature inside the falling film evaporator and feeding back the temperature to the PLC, and the PLC is further used for controlling the temperature inside the falling film evaporator.
5. The pre-purification apparatus for detecting organic acids according to claim 4, further comprising a temperature display device and a temperature alarm device, wherein the temperature display device and the temperature alarm device are both connected to the PLC.
6. The pre-purification apparatus for detecting organic acids according to any one of claims 1 to 5, wherein the edge of the hole protrudes with a flange toward the inside of the falling film evaporator.
7. The pre-purification apparatus for detecting organic acids according to claim 1, further comprising a motor for rotating the scraping device, and further comprising a PLC and a frequency converter, wherein the PLC controls the rotation speed of the motor through the frequency converter.
8. The pre-purification apparatus for detecting organic acids according to claim 1, wherein the bottom of the falling film evaporator is communicated with the lower part of the gas-liquid separation tank, and a packing for gas-liquid separation is provided in the gas-liquid separation tank.
9. The pre-purification device for detecting organic acids according to claim 1, wherein a water gap is formed at the bottom of the accommodating chamber, and a pipeline is connected to the water gap and communicated with the feed inlet through the pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822275259.3U CN209790894U (en) | 2018-12-31 | 2018-12-31 | Front purification device for detecting organic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822275259.3U CN209790894U (en) | 2018-12-31 | 2018-12-31 | Front purification device for detecting organic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209790894U true CN209790894U (en) | 2019-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822275259.3U Active CN209790894U (en) | 2018-12-31 | 2018-12-31 | Front purification device for detecting organic acid |
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| Country | Link |
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| CN (1) | CN209790894U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109692489A (en) * | 2018-12-31 | 2019-04-30 | 青岛市华测检测技术有限公司 | For detecting the preposition equipment for purifying of organic acid |
| CN113521776A (en) * | 2021-06-21 | 2021-10-22 | 南京金典制冷实业有限公司 | Alarm device of falling film evaporator |
-
2018
- 2018-12-31 CN CN201822275259.3U patent/CN209790894U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109692489A (en) * | 2018-12-31 | 2019-04-30 | 青岛市华测检测技术有限公司 | For detecting the preposition equipment for purifying of organic acid |
| CN113521776A (en) * | 2021-06-21 | 2021-10-22 | 南京金典制冷实业有限公司 | Alarm device of falling film evaporator |
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