CN216512941U - Treatment system for leading-out water phase of hydration reactor in sec-butyl alcohol preparation through direct hydration method - Google Patents
Treatment system for leading-out water phase of hydration reactor in sec-butyl alcohol preparation through direct hydration method Download PDFInfo
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- CN216512941U CN216512941U CN202123443527.6U CN202123443527U CN216512941U CN 216512941 U CN216512941 U CN 216512941U CN 202123443527 U CN202123443527 U CN 202123443527U CN 216512941 U CN216512941 U CN 216512941U
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Abstract
The utility model discloses a treatment system for leading out a water phase from a hydration reactor in a process for preparing sec-butyl alcohol by direct hydration, belonging to the technical field of sec-butyl alcohol production by butylene hydration. The technical scheme is as follows: the process water treatment device comprises a circulating process water tank, wherein the circulating process water tank is connected with a process water extraction pipeline, and the process water extraction pipeline is connected with a feed inlet of a de-weighting device through an eccentric reducing pipe; the top of the de-weighting device is connected with a light component extraction pipeline, the bottom of the de-weighting device is connected with a heavy component extraction pipeline, and the de-weighting device is also connected with a light component and heavy component removal process water extraction pipeline; a liquid level sensor is installed in the de-weighting device, a control valve is installed on a process water production and discharge pipeline, and the liquid level sensor and the control valve are respectively and electrically connected with the controller. The utility model reduces the flow velocity through the thickening pipeline to ensure that heavy components in the process water are settled and light components are volatilized, thereby achieving the purposes of purification and improving the effect of recycling the water system.
Description
Technical Field
The utility model relates to the technical field of sec-butyl alcohol production by butene hydration, in particular to a treatment system for leading out a water phase from a hydration reactor in a sec-butyl alcohol preparation method by direct hydration.
Background
Secondary Butanol (SBA) formula C4H10O, a colorless, transparent, flammable liquid with a wine-like odor. Boiling point 99.5 deg.C, vapor pressure 1.33kPa/20 deg.C, flash point 24 deg.C, relative density (water 1)0.81, dissolving in water, and mixing with ethanol and diethyl ether. Can be used as an emulsifier, a dye dispersant, a dehydrating agent, a paint remover, an industrial detergent and the like, and also can be used as an intermediate for producing methyl ethyl ketone and used for preparing butyl acetate, sec-butyl acetate and the like. At present, the application of sec-butyl alcohol in industrial production is mainly used as a production raw material of methyl ethyl ketone, which accounts for about 90% of the total consumption, so the market condition of sec-butyl alcohol depends on the production and the market condition of methyl ethyl ketone.
The production process of sec-butyl alcohol mainly comprises an indirect hydration method and a direct hydration method in general industry:
1. indirect hydration process
Sulfuric acid is used as a catalyst for hydration reaction, n-butene is added into a reactor and is synthesized through the reaction processes of esterification reaction, hydrolysis reaction and the like, and the reaction formula is as follows:
2. direct hydration process
Under the condition of an acid catalyst, reacting butylene with water to obtain sec-butyl alcohol, wherein the reaction formula is as follows:
the main flow of the direct hydration method for preparing sec-butyl alcohol is that fresh butylene raw material enters a hydration reactor, process circulating water enters the hydration reactor in four sections after part of fresh process water is supplemented, and n-butylene reacts with water to generate sec-butyl alcohol under the catalysis of acidic cationic resin. The catalyst in the hydration reactor is filled in four sections, the reaction materials flow from bottom to top, sedimentation and layering are carried out between catalyst bed layers, the water phase is led out of the hydration reactor, the organic phase continuously enters the next bed layer in sequence, finally flows out of the top of the reactor and enters a liquid-liquid separator, and the separated water phase and the water led out of the hydration reactor are recycled after being treated. The water phase led out from the hydration reactor can carry a small amount of reaction polymer and sec-butyl alcohol and butylene dissolved in water, and still carry a small amount of polymer after recovery treatment, so that a filter, a regulating valve and the like are blocked, and normal conveying of a pipeline is influenced, therefore, the water phase needs to be treated and then used.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the defects of the prior art are overcome, the treatment system for leading out the water phase from the hydration reactor in the sec-butyl alcohol preparation by the direct hydration method is provided, the heavy components in the process water are settled and the light components are volatilized by slowing down the flow speed through the thickening pipeline, the purposes of purification and purification are achieved, and the effect of recycling the water system is improved.
The technical scheme of the utility model is as follows:
a treatment system for guiding out a water phase from a hydration reactor in a sec-butyl alcohol preparation method by direct hydration comprises a circulating process water tank, wherein the circulating process water tank is connected with a process water extraction pipeline, and the process water extraction pipeline is connected with a feed inlet of a de-weighting device through an eccentric reducing pipe; the top of the de-weighting device is connected with a light component extraction pipeline, the bottom of the de-weighting device is connected with a heavy component extraction pipeline, and the de-weighting device is also connected with a light component and heavy component removal process water extraction pipeline; a liquid level sensor is installed in the de-weighting device, a control valve is installed on a process water production and discharge pipeline, and the liquid level sensor and the control valve are respectively and electrically connected with the controller.
Preferably, the de-weighting device is also connected with a light-weight and heavy-weight removal process water reflux pipeline, and the light-weight and heavy-weight removal process water reflux pipeline is connected with a reflux port of the de-weighting device.
Preferably, the light and heavy removal process water extraction pipeline is connected with a buffer tank, and the buffer tank is connected with a reflux port of the heavy removal device through a light and heavy removal process water reflux pipeline.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model settles the heavy components and volatilizes the light components in the process water by slowing down the flow velocity, thereby achieving the purpose of separation; the utility model has good use effect, and the cleaning frequency of the filter and the regulating valve in the subsequent flow after the use is greatly reduced.
Drawings
Fig. 1 is a schematic structural view of the present invention.
In the figure, 1-a circulating process water tank, 2-a process water extraction pipeline, 3-a de-weighting device, 4-a light component extraction pipeline, 5-a heavy component extraction pipeline, 6-a light component and de-weighting process water extraction pipeline, 7-a liquid level sensor, 8-a control valve, 9-a light component and de-weighting process water reflux pipeline and 10-a buffer tank.
Detailed Description
Example 1
As shown in fig. 1, the embodiment provides a treatment system for a water phase derived from a hydration reactor in a sec-butyl alcohol production method by direct hydration, which includes a circulating process water tank 1, wherein the circulating process water tank 1 is connected with a process water extraction pipeline 2, the process water extraction pipeline 2 is connected with a feed inlet of a de-weighting device 3 through an eccentric reducing pipe, the inner diameter of the process water extraction pipeline 2 is 150mm, and the inner diameter of the eccentric reducing pipe is 500 mm; the top of the de-weighting device 3 is connected with a light component extraction pipeline 4, the bottom is connected with a heavy component extraction pipeline 5, and the de-weighting device 3 is also connected with a light component and heavy component removal process water extraction pipeline 6; a liquid level sensor 7 is arranged in the de-weighting device 3, a control valve 8 is arranged on the process water extraction pipeline 2, and the liquid level sensor 7 and the control valve 8 are respectively and electrically connected with the controller.
The working principle is as follows: when in use, the process water containing light and heavy components enters the eccentric reducer from the process water extraction pipeline 2 and then flows into the de-weighting device 3. The pipe diameter is thickened so that the flow velocity is reduced, and heavy components entering the weight remover 3 are settled and separated out through a heavy component extraction pipeline 5; while the light component is volatilized and separated out through a light component extraction pipeline 4; the finally purified process water is extracted through a light and heavy removal process water extraction pipeline 6 and enters the next procedure. In addition, the liquid level of the weight removing device 3 is monitored in real time through the liquid level sensor 7, when the liquid level is too high, the liquid level sensor 7 feeds back a signal to the controller, the controller closes the control valve 8, and the process water is stopped from being continuously introduced into the weight removing device 3 until the liquid level is reduced to be capable of continuously working. The light and heavy removal effect of the embodiment is good, and the cleaning frequency of the filter in the subsequent process is greatly reduced after the device is put into use.
Example 2
On the basis of the embodiment 1, the de-weighting device 3 is also connected with a light-weight and heavy-weight removing process water reflux pipeline 9, and the light-weight and heavy-weight removing process water reflux pipeline 9 is connected with a reflux port of the de-weighting device 3. One part of the light and heavy removal process water treated by the heavy removal device 3 is extracted and enters the next procedure, and the other part of the light and heavy removal process water flows back to the heavy removal device 3 to be subjected to light and heavy removal treatment again, so that the treatment effect is better.
Example 3
On the basis of the embodiment 2, the light and heavy removal process water extraction pipeline 6 is connected with the buffer tank 10, and the buffer tank 10 is connected with the reflux port of the heavy remover 3 through the light and heavy removal process water reflux pipeline 9. The buffer tank 10 is added to play a role in buffering the de-weighting device 3, so that the continuous work of the system is ensured.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. A treatment system for leading out a water phase from a hydration reactor in a sec-butyl alcohol preparation by a direct hydration method is characterized in that: the process water circulation system comprises a circulation process water tank (1), wherein the circulation process water tank (1) is connected with a process water extraction pipeline (2), and the process water extraction pipeline (2) is connected with a feed inlet of a de-weighting device (3) through an eccentric reducing pipe; the top of the de-weighting device (3) is connected with a light component extraction pipeline (4), the bottom is connected with a heavy component extraction pipeline (5), and the de-weighting device (3) is also connected with a light component and heavy component removal process water extraction pipeline (6); a liquid level sensor (7) is installed in the weighter removal device (3), a control valve (8) is installed on the process water extraction pipeline (2), and the liquid level sensor (7) and the control valve (8) are respectively and electrically connected with the controller.
2. The system for treating the water phase discharged from the hydration reactor in the process of producing sec-butyl alcohol by direct hydration according to claim 1, wherein: the de-weighting device (3) is also connected with a light-weight and heavy-weight removal process water return pipeline (9), and the light-weight and heavy-weight removal process water return pipeline (9) is connected with a return port of the de-weighting device (3).
3. The system for treating the water phase discharged from the hydration reactor in the process of producing sec-butyl alcohol by direct hydration according to claim 2, wherein: the light and heavy removal process water extraction pipeline (6) is connected with a buffer tank (10), and the buffer tank (10) is connected with a reflux port of the heavy removal device (3) through a light and heavy removal process water reflux pipeline (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123443527.6U CN216512941U (en) | 2021-12-31 | 2021-12-31 | Treatment system for leading-out water phase of hydration reactor in sec-butyl alcohol preparation through direct hydration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123443527.6U CN216512941U (en) | 2021-12-31 | 2021-12-31 | Treatment system for leading-out water phase of hydration reactor in sec-butyl alcohol preparation through direct hydration method |
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| Publication Number | Publication Date |
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| CN216512941U true CN216512941U (en) | 2022-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123443527.6U Active CN216512941U (en) | 2021-12-31 | 2021-12-31 | Treatment system for leading-out water phase of hydration reactor in sec-butyl alcohol preparation through direct hydration method |
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| CN (1) | CN216512941U (en) |
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2021
- 2021-12-31 CN CN202123443527.6U patent/CN216512941U/en active Active
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