CN211199066U - BDO/PTMEG device byproduct recovery system - Google Patents
BDO/PTMEG device byproduct recovery system Download PDFInfo
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- CN211199066U CN211199066U CN201921803288.0U CN201921803288U CN211199066U CN 211199066 U CN211199066 U CN 211199066U CN 201921803288 U CN201921803288 U CN 201921803288U CN 211199066 U CN211199066 U CN 211199066U
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Abstract
A BDO/PTMEG device byproduct recovery system comprises a raw material storage tank, a rectifying tower, a first-stage condenser, a second-stage condenser, a reflux storage tank, a reboiler and a finished product storage tank, wherein a feed inlet of the rectifying tower is connected with the raw material storage tank through a first pipeline, a delivery pump is arranged on the first pipeline, a steam exhaust port of the rectifying tower is connected with the first-stage condenser through a second pipeline, the first-stage condenser is connected with the second-stage condenser in series through a third pipeline, a liquid exhaust port of the second-stage condenser is connected with the reflux storage tank through a fourth pipeline, the reflux storage tank is connected with the finished product storage tank through a fifth pipeline, a reflux pump and a first valve are arranged on the fifth pipeline, the first valve is positioned at the downstream of the reflux pump, the BDO/PTMEG device byproduct recovery system also comprises a sixth pipeline, the upstream end of the sixth pipeline is connected with the fifth pipeline in parallel and positioned between the reflux pump and the, the feed inlet of the reboiler is connected with the bottom of the rectifying tower, and the discharge outlet of the reboiler is connected with the middle part of the side wall of the rectifying tower.
Description
Technical Field
The utility model relates to a chemical industry field, in particular to BDO PTMEG device by-product recovery system.
Background
BDO, namely 1,4 butanediol, PTMEG, namely polytetramethylene ether glycol, is an important chemical raw material. In the normal production process of the BDO/PTMEG device, the by-products and waste liquid generated in each section mainly comprise fusel oil (mainly containing methanol, ethanol, butanol and the like), BDO device tar (mainly containing BDO, THF, methanol, butanol, ethanol and the like), crude butanol (mainly containing methanol, butanol, propanol and the like) and PTMEG waste liquid (mainly containing MeAc, THF, methanol and the like). At present, most of the treatment methods of the byproducts adopt incineration, so that the economic benefit is low, the resources are seriously wasted, and the environmental protection requirements are not met.
Therefore, how to efficiently recycle these by-products is a problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims at prior art not enough, provide a BDO PTMEG device by-product recovery system, its simple structure, convenient operation through the adjustment parameter, satisfy the purpose of retrieving the high value component in BDO PTMEG device by-product.
The technical scheme of the utility model is that: a BDO/PTMEG device byproduct recovery system comprises a raw material storage tank, a rectifying tower, a first-stage condenser, a second-stage condenser, a reflux storage tank, a reboiler and a finished product storage tank, wherein a feed inlet of the rectifying tower is connected with the raw material storage tank through a first pipeline, a conveying pump is arranged on the first pipeline, a steam outlet at the top of the rectifying tower is connected with the first-stage condenser through a second pipeline, the first-stage condenser is serially connected with the second-stage condenser through a third pipeline, a liquid outlet of the second-stage condenser is connected with the reflux storage tank through a fourth pipeline, the reflux storage tank is connected with the finished product storage tank through a fifth pipeline, a reflux pump and a first valve are arranged on the fifth pipeline, the first valve is positioned at the downstream of the reflux pump, the BDO/PTMEG device byproduct recovery system also comprises a sixth pipeline, the upstream end of the sixth pipeline is connected with the fifth pipeline in parallel and positioned between the reflux pump and the first valve, and a second valve is arranged on the sixth pipeline, a feed inlet of the reboiler is connected with the bottom of the rectifying tower, and a discharge outlet of the reboiler is connected with the middle part of the side wall of the rectifying tower.
The rectifying tower is a packed tower, and the packing adopts stainless steel corrugated packing.
And the first valve and the second valve are both flow regulating valves.
The feed inlet of raw materials storage tank is located raw materials storage tank lateral wall upper portion, and the discharge gate of raw materials storage is located raw materials storage tank lateral wall lower part.
The feed inlet of finished product storage tank is located finished product storage tank lateral wall lower part, and the discharge gate of finished product storage tank is located finished product storage tank lateral wall upper portion.
Adopt above-mentioned technical scheme to have following beneficial effect:
1. the system for recovering the by-products of the BDO/PTMEG device comprises a raw material storage tank, a rectifying tower, a primary condenser, a secondary condenser, a reflux storage tank, a reboiler and a finished product storage tank, wherein the raw material storage tank is used for temporarily storing the by-products generated by the BDO/PTMEG device, the rectifying tower is used for separating high-value components in the by-products, the primary condenser and the secondary condenser are used for respectively carrying out primary cooling and secondary cooling on the distilled components to ensure that the components in a vapor state are fully liquefied, the reflux storage tank is used for temporarily storing the separated components in a liquid state, and the finished product storage tank is used for storing the separated components in the liquid state and externally discharging the separated components. The feed inlet of the rectifying tower is connected with the raw material storage tank through a first pipeline, and a delivery pump is arranged on the first pipeline and used for providing byproducts generated in the production process of the BDO/PTMEG device for the rectifying tower. The top steam outlet of the rectifying tower is connected with a first-stage condenser through a second pipeline, the first-stage condenser is connected with a second-stage condenser in series through a third pipeline, a liquid outlet of the second-stage condenser is connected with a reflux storage tank through a fourth pipeline, corresponding temperature is controlled according to the properties of different components in byproducts, specific components are fractionated out and are temporarily stored in the reflux storage tank after being cooled, and the requirement for recovering high-value components in the byproducts is met. The reflux storage tank is connected with the finished product storage tank through a fifth pipeline, a reflux pump and a first valve are arranged on the fifth pipeline, the first valve is located at the downstream of the reflux pump, and the temporarily stored liquid components are conveyed into the finished product storage tank by opening the first valve. The device also comprises a sixth pipeline, wherein the upstream end of the sixth pipeline is connected with the fifth pipeline in parallel and is positioned between the reflux pump and the first valve, the downstream end of the sixth pipeline is connected with the upper part of the side wall of the rectifying tower, the sixth pipeline is provided with a second valve, the purpose of adjusting the reflux ratio of the rectifying tower is realized by controlling the opening degrees of the first valve and the second valve, the returned liquid phase is in countercurrent contact with the vapor phase of the rectifying tower, the smooth fractionation of all components in byproducts is ensured, and the fractionation purity is ensured. The feed inlet of reboiler is connected at the bottom of the tower with the rectifying column, and the discharge gate of reboiler is connected with the lateral wall middle part of rectifying column, according to actual demand, opens the reboiler, and during the liquid phase entering reboiler of rectifying column bottom, boils once more, and the misce bene returned to the rectifying column middle part, vapor phase wherein rises, and contacts with the liquid phase countercurrent of backward flow, arranges to the condenser by top of the tower steam extraction mouth, and liquid phase wherein returns to the rectifying column bottom, accomplishes component separation's purpose.
2. The first valve and the second valve both adopt flow regulating valves, the liquid phase flow entering the finished product storage tank and flowing back to the rectifying tower is accurately controlled, and the purpose of accurately controlling the reflux ratio of the rectifying tower is met.
3. The feed inlet of finished product storage tank is located finished product storage tank lateral wall lower part, and the discharge gate of finished product storage tank is located finished product storage tank lateral wall upper portion, and the liquid phase that gets into the finished product storage tank discharges after the layering that stews, effectively improves the component purity of arranging outward.
The following further description is made with reference to the accompanying drawings and detailed description.
Drawings
Fig. 1 is a schematic connection diagram of the present invention.
In the attached drawing, 1 is a raw material storage tank, 2 is a rectifying tower, 3 is a first-stage condenser, 4 is a second-stage condenser, 5 is a reflux storage tank, 6 is a reboiler, 7 is a finished product storage tank, 8 is a delivery pump, 9 is a reflux pump, 11 is a first pipeline, 12 is a second pipeline, 13 is a third pipeline, 14 is a fourth pipeline, 15 is a fifth pipeline, 16 is a sixth pipeline, a is a first valve, and b is a second valve.
Detailed Description
The utility model discloses in, do not mark the equipment of concrete connection mode, go on according to conventional condition or according to the condition of firm suggestion usually, do not mark the equipment of specific model, be the conventional equipment in chemical industry field usually.
Referring to fig. 1, a particular embodiment of a BDO/PTMEG unit byproduct recovery system is shown. The BDO/PTMEG device byproduct recovery system comprises a raw material storage tank 1, a rectifying tower 2, a primary condenser 3, a secondary condenser 4, a reflux storage tank 5, a reboiler 6 and a finished product storage tank 7. The feed inlet of rectifying column 2 is connected with raw materials storage tank 1 through first pipeline 11, is equipped with delivery pump 8 on this first pipeline 11, and is concrete, and the feed inlet of raw materials storage tank 1 is located 1 lateral wall upper portion of raw materials storage tank, and the discharge gate of raw materials storage 1 is located 1 lateral wall lower part of raw materials storage tank, and the by-product that the BDO/PTMEG device generated firstly gets into the rectifying column after the raw materials storage tank is cushioned again. The top of the tower steam vent of rectifying column 2 passes through second pipeline 12 and is connected with one-level condenser 3, and one-level condenser 3 passes through third pipeline 13 and is connected with second grade condenser 4 in series, and the leakage fluid dram of second grade condenser 4 passes through fourth pipeline 14 and is connected with reflux storage tank 5, and is specific, and the rectifying column is the packed tower, and the packing adopts stainless steel ripple to pack, and one-level condenser, second grade condenser are tube sheet heat exchanger. The reflux storage tank 5 is connected with the finished product storage tank 7 through a fifth pipeline 15, the fifth pipeline 15 is provided with a reflux pump 9 and a first valve a, the first valve a is located at the downstream of the reflux pump 9, specifically, the first valve adopts a flow regulating valve, a feed inlet of the finished product storage tank 7 is located at the lower part of the side wall of the finished product storage tank 7, a discharge outlet of the finished product storage tank 7 is located at the upper part of the side wall of the finished product storage tank 7, so that liquid phase stored in the finished product storage tank is discharged outwards after standing and layering, and the purity of the discharged components can be further improved. The rectifying tower further comprises a sixth pipeline 16, the upstream end of the sixth pipeline 16 is connected with the fifth pipeline 15 in parallel and located between the reflux pump 9 and the first valve a, the downstream end of the sixth pipeline 16 is connected with the middle of the side wall of the rectifying tower 2, a second valve b is arranged on the sixth pipeline 16, and specifically, the second valve is a flow regulating valve. The feed inlet of reboiler 6 is connected with the tower bottom of rectifying column 2, and the discharge gate of reboiler 6 is connected with the lateral wall middle part of rectifying column 2.
The working principle of the utility model is to take the byproduct (crude butanol) generated by the BDO recovery device as an example. The operation pressure is normal pressure, the tower top temperature of the rectifying tower is controlled to be 66.5 ℃, and the tower bottom temperature is controlled to be 99.5 ℃. The normal temperature crude butanol enters a raw material storage tank, is pumped into a rectifying tower by a delivery pump, reaches a reboiler through a stripping section, the steam on the shell side of the reboiler is 7bar saturated steam, part of materials are vaporized after being heated, light component methanol enters a vapor phase, heavy component butanol, water, propanol and the like enter a liquid phase, the vapor phase passes through the stripping section and the rectifying section, is discharged to a primary condenser and a secondary condenser through a top steam outlet, is completely liquefied and then is discharged to a reflux storage tank, the reflux ratio is controlled through a first valve in the rectifying process, the concentration of the vapor phase methanol is increased to 93 percent, the product quality is ensured, and the rest methanol enters a finished product storage tank through a second valve, so that the requirement of external sales is met.
Claims (5)
1. A BDO/PTMEG device byproduct recovery system is characterized in that: comprises a raw material storage tank (1), a rectifying tower (2), a primary condenser (3), a secondary condenser (4), a reflux storage tank (5), a reboiler (6) and a finished product storage tank (7),
the feed inlet of the rectifying tower (2) is connected with the raw material storage tank (1) through a first pipeline (11), a delivery pump (8) is arranged on the first pipeline (11),
the top steam outlet of the rectifying tower (2) is connected with a first-stage condenser (3) through a second pipeline (12), the first-stage condenser (3) is connected with a second-stage condenser (4) in series through a third pipeline (13), the liquid outlet of the second-stage condenser (4) is connected with a reflux storage tank (5) through a fourth pipeline (14),
the reflux storage tank (5) is connected with the finished product storage tank (7) through a fifth pipeline (15), a reflux pump (9) and a first valve (a) are arranged on the fifth pipeline (15), the first valve (a) is positioned at the downstream of the reflux pump (9),
the device also comprises a sixth pipeline (16), the upstream end of the sixth pipeline (16) is connected with the fifth pipeline (15) in parallel and is positioned between the reflux pump (9) and the first valve (a), the downstream end of the sixth pipeline (16) is connected with the upper part of the side wall of the rectifying tower (2), the sixth pipeline (16) is provided with a second valve (b),
the feed inlet of reboiler (6) is connected with the tower bottom of rectifying column (2), and the discharge gate of reboiler (6) is connected with the lateral wall middle part of rectifying column (2).
2. The BDO/PTMEG device byproduct recovery system of claim 1, wherein: the rectifying tower (2) is a packed tower, and the packing adopts stainless steel corrugated packing.
3. The BDO/PTMEG device byproduct recovery system of claim 1, wherein: and the first valve (a) and the second valve (b) both adopt flow regulating valves.
4. The BDO/PTMEG device byproduct recovery system of claim 1, wherein: the feed inlet of raw materials storage tank (1) is located raw materials storage tank (1) lateral wall upper portion, and the discharge gate of raw materials storage (1) is located raw materials storage tank (1) lateral wall lower part.
5. The BDO/PTMEG device byproduct recovery system of claim 1, wherein: the feed inlet of finished product storage tank (7) is located finished product storage tank (7) lateral wall lower part, and the discharge gate of finished product storage tank (7) is located finished product storage tank (7) lateral wall upper portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921803288.0U CN211199066U (en) | 2019-10-24 | 2019-10-24 | BDO/PTMEG device byproduct recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921803288.0U CN211199066U (en) | 2019-10-24 | 2019-10-24 | BDO/PTMEG device byproduct recovery system |
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| CN211199066U true CN211199066U (en) | 2020-08-07 |
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| CN201921803288.0U Active CN211199066U (en) | 2019-10-24 | 2019-10-24 | BDO/PTMEG device byproduct recovery system |
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| CN (1) | CN211199066U (en) |
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- 2019-10-24 CN CN201921803288.0U patent/CN211199066U/en active Active
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