CN212119075U - Acetyl n-propanol product purification device - Google Patents
Acetyl n-propanol product purification device Download PDFInfo
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- CN212119075U CN212119075U CN202020140760.3U CN202020140760U CN212119075U CN 212119075 U CN212119075 U CN 212119075U CN 202020140760 U CN202020140760 U CN 202020140760U CN 212119075 U CN212119075 U CN 212119075U
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Abstract
The utility model belongs to the technical field of n-propyl acetyl alcohol production devices, in particular to a purification device for n-propyl acetyl alcohol products, which comprises a distillation still, wherein an upper feed inlet of the distillation still is connected with an alkali liquor tank through a metering pump, an upper exhaust outlet of the distillation still is connected with a gas-liquid separation tank, a top gas phase of the gas-liquid separation tank is sequentially connected with a first-stage condenser and a second-stage condenser, a discharge outlet of the second-stage condenser is connected with a receiving tank, the receiving tank is connected with a light component storage tank, the bottom of the gas-liquid separation tank is connected with the distillation still, and an outlet at the bottom of the distillation still is connected; the distillation still is provided with a jacket, and the jacket is connected with a steam generator. The utility model can effectively recycle the evaporated gas phase for cyclic utilization through two-stage condensation; the water after heat exchange is sent to the steam generator, so that the heat can be effectively recycled, and the energy is saved and the consumption is reduced.
Description
Technical Field
The utility model belongs to the technical field of acetyl normal propyl alcohol apparatus for producing, concretely relates to acetyl normal propyl alcohol product purification device.
Background
Acetyl n-propanol (5-hydroxy-2-pentanone) is a fine chemical product widely used in the fields of medicine (used as a raw material for producing antimalarials, vitamins and AIDS), pesticides, organic synthesis and the like.
At present, acetyl-n-propanol is mainly prepared by carrying out hydrogenation reaction on 2-methylfuran under an acidic condition, then distilling to obtain a product, and in the stage of distillation and purification, unreacted 2-methylfuran, 2-methyltetrahydrofuran, water and other gas phases can be evaporated out, so that an acetyl-n-propanol product is obtained.
The existing distillation process has the problems of ineffective recovery of byproducts, high energy consumption, low production efficiency and the like.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: overcomes the defects of the prior art, provides a device for purifying the acetyl-n-propanol product, has low energy consumption and high production efficiency, and is more beneficial to the high-efficiency production of enterprises.
The utility model discloses an adopt following technical scheme to realize:
the device for purifying the acetyl-n-propanol product comprises a distillation kettle, wherein a feed inlet at the upper part of the distillation kettle is connected with an alkali liquor tank through a metering pump, an exhaust outlet at the upper part of the distillation kettle is connected with a gas-liquid separation tank, the top of the gas-liquid separation tank is sequentially connected with a first-stage condenser and a second-stage condenser in a gas phase manner, a discharge outlet of the second-stage condenser is connected with a receiving tank, the receiving tank is connected with a light component storage tank, the bottom of the gas-liquid separation tank is connected with the distillation kettle, and an outlet at the bottom of the distillation kettle; the distillation still is provided with a jacket, and the jacket is connected with a steam generator.
Preferably, one-level condenser and second grade condenser be water cooling plant, the cold water inlet of one-level condenser and second grade condenser all is connected with coolant tank, the cold water export of one-level condenser and second grade condenser all is connected with steam generator.
Preferably, the bottom outlet of the distillation kettle is connected with a heat exchanger, and the heat exchanger is connected with the suction filter.
Preferably, a cold water inlet of the heat exchanger is connected with the cooling water tank, and a cold water outlet of the heat exchanger is connected with the steam generator.
The working process and principle are as follows:
firstly, metering a sodium bicarbonate solution in an alkali liquor tank by a metering pump, adding the sodium bicarbonate solution into a distillation kettle (at normal temperature and normal pressure), and neutralizing the material until the pH value is 6-7; then introducing steam (0.2MPa and 120 ℃) into a distillation kettle jacket, controlling the pressure in the kettle to be-0.08 MPa and the temperature to be 82 ℃ to evaporate gas phase (unreacted 2-methylfuran, 2-methyltetrahydrofuran and water), enabling the gas phase to flow back to the reaction kettle after passing through a gas-liquid separator, enabling the gas phase to enter a first-stage condenser and a second-stage condenser to be cooled to 40 ℃, enabling the cooled material to enter a receiving tank, conveying the material to a light component storage tank from the receiving tank, and recycling the material; and cooling the product at the bottom of the distillation kettle to 50 ℃, and then, introducing the product into a product storage tank through a suction filter.
Compared with the prior art, the beneficial effects of the utility model are as follows:
1. the utility model discloses can effectively retrieve the gaseous phase that evaporates through the two-stage condensation.
2. The utility model discloses send the water after the heat transfer to steam generator, can be with the effectual cyclic utilization of heat, energy saving and consumption reduction.
3. The utility model discloses, simple structure, production efficiency is higher.
Drawings
Fig. 1 is a schematic structural view of the present invention;
in the figure: 1. an alkali liquor tank; 2. a metering pump; 3. a distillation kettle; 4. a gas-liquid separation tank; 5. a first-stage condenser; 6. a secondary condenser; 7. a receiving tank; 8. a light component storage tank; 9. a cooling water tank; 10. a steam generator; 11. a heat exchanger; 12. a suction filter; 13. and (5) a product storage tank.
Detailed Description
The present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the device for purifying an n-propanol acetyl product comprises a distillation kettle 3, wherein a feed inlet at the upper part of the distillation kettle 3 is connected with an alkali liquor tank 1 through a metering pump 2, an exhaust outlet at the upper part of the distillation kettle 3 is connected with a gas-liquid separation tank 4, a gas phase at the top of the gas-liquid separation tank 4 is sequentially connected with a first-stage condenser 5 and a second-stage condenser 6, a discharge outlet of the second-stage condenser 6 is connected with a receiving tank 7, the receiving tank 7 is connected with a light component storage tank 8, the bottom of the gas-liquid separation tank 4 is connected with the distillation kettle 3, an outlet at the bottom of the distillation kettle 3 is connected with a heat exchanger 11, the heat exchanger 11 is connected with a suction filter; the distillation still 3 is provided with a jacket which is connected with a steam generator 10.
One-level condenser 5 and second grade condenser 6 be water cooling plant, the cold water inlet of one-level condenser 5 and second grade condenser 6 all is connected with coolant tank 9, the cold water export of one-level condenser 5 and second grade condenser 6 all is connected with steam generator 10.
And a cold water inlet of the heat exchanger 11 is connected with the cooling water tank 9, and a cold water outlet of the heat exchanger 11 is connected with the steam generator 10.
The water after the heat exchange of the first-stage condenser 5, the second-stage condenser 6 and the heat exchanger 11 is sent into the steam generator 10 to prepare steam, so that the heat is effectively recycled, the energy can be saved, the consumption can be reduced, and the production cost of enterprises can be reduced.
During working, firstly, the sodium bicarbonate solution in the lye tank 1 is metered by the metering pump 2 and then added into the distillation kettle 3 (normal temperature and normal pressure), and the materials are neutralized until the pH value is 6-7; then steam (0.2MPa and 120 ℃) is introduced into a jacket of a distillation kettle 3 from a steam generator 10, a gas phase (unreacted 2-methylfuran, 2-methyltetrahydrofuran and water) is evaporated under the conditions of controlling the pressure of-0.08 MPa and the temperature of 82 ℃ in the kettle, the gas phase is separated by a gas-liquid separator 4, a liquid phase flows back to the reaction kettle 3, the gas phase enters a first-stage condenser 5 and a second-stage condenser 6 for cooling to 40 ℃, the cooled material enters a receiving tank 7 and is conveyed to a light component storage tank 8 from the receiving tank 7 for recycling; the bottom product of the distillation kettle 3 is cooled to 50 ℃ by a heat exchanger 11 and then enters a product storage tank 13 through a suction filter 12.
Of course, the above description is only a preferred embodiment of the present invention, and should not be taken as limiting the scope of the embodiments of the present invention. The present invention is not limited to the above examples, and the technical field of the present invention is equivalent to the changes and improvements made in the actual range of the present invention, which should be attributed to the patent coverage of the present invention.
Claims (4)
1. The utility model provides an acetyl n-propanol product purification device, includes stills (3), its characterized in that: the device is characterized in that a feeding port at the upper part of the distillation kettle (3) is connected with an alkali liquor tank (1) through a metering pump (2), an exhaust port at the upper part of the distillation kettle (3) is connected with a gas-liquid separation tank (4), a gas phase at the top of the gas-liquid separation tank (4) is sequentially connected with a primary condenser (5) and a secondary condenser (6), a discharge port of the secondary condenser (6) is connected with a receiving tank (7), the receiving tank (7) is connected with a light component storage tank (8), the bottom of the gas-liquid separation tank (4) is connected with the distillation kettle (3), and an outlet at the bottom of the distillation kettle (3) is connected with a product storage tank (13) through a suction filter (12; the distillation kettle (3) is provided with a jacket, and the jacket is connected with a steam generator (10).
2. The purification apparatus of n-propanol acetyl product of claim 1, wherein: one-level condenser (5) and second grade condenser (6) be water cooling plant, the cold water inlet of one-level condenser (5) and second grade condenser (6) all is connected with coolant tank (9), the cold water export of one-level condenser (5) and second grade condenser (6) all is connected with steam generator (10).
3. The purification apparatus of n-propanol acetyl product of claim 1, wherein: the bottom outlet of the distillation kettle (3) is connected with a heat exchanger (11), and the heat exchanger (11) is connected with the suction filter (12).
4. The purification apparatus of n-propanol acetyl product as claimed in claim 3, wherein: and a cold water inlet of the heat exchanger (11) is connected with the cooling water tank (9), and a cold water outlet of the heat exchanger (11) is connected with the steam generator (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020140760.3U CN212119075U (en) | 2020-01-20 | 2020-01-20 | Acetyl n-propanol product purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020140760.3U CN212119075U (en) | 2020-01-20 | 2020-01-20 | Acetyl n-propanol product purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212119075U true CN212119075U (en) | 2020-12-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020140760.3U Active CN212119075U (en) | 2020-01-20 | 2020-01-20 | Acetyl n-propanol product purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212119075U (en) |
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2020
- 2020-01-20 CN CN202020140760.3U patent/CN212119075U/en active Active
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