CN219963989U - Light component removal equipment of ethylene glycol device TEG tower - Google Patents
Light component removal equipment of ethylene glycol device TEG tower Download PDFInfo
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- CN219963989U CN219963989U CN202321489668.8U CN202321489668U CN219963989U CN 219963989 U CN219963989 U CN 219963989U CN 202321489668 U CN202321489668 U CN 202321489668U CN 219963989 U CN219963989 U CN 219963989U
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Abstract
The utility model discloses a device for removing light components of a TEG (polyethylene glycol) tower of an ethylene glycol device, which belongs to the technical field of chemical production equipment and comprises a TEG rectifying tower, a TEG rectifying tower filler a, a TEG rectifying tower filler b, a TEG rectifying tower filler c, a TEG rectifying tower light component extraction pump, a TEG rectifying tower product extraction pump, a TEG rectifying tower kettle pump, a TEG rectifying tower reboiler and a TEG product cooler, wherein the newly added TEG rectifying tower filler c removes the light components of the TEG rectifying tower, a liquid collecting tank at the upper part of the TEG rectifying tower filler c is communicated with the TEG rectifying tower light component extraction pump through a pipeline, the lower part of the TEG rectifying tower is communicated with the TEG rectifying tower kettle pump through a pipeline, the lower part of the TEG rectifying tower filler c is communicated with the TEG rectifying tower product extraction pump through a pipeline, and is sent to an intermediate product tank through the pipeline, and the light component content in the TEG rectifying tower is mainly applied to the ethylene glycol device.
Description
Technical Field
The utility model belongs to the technical field of chemical production equipment, and particularly relates to equipment for removing light components from a TEG tower of an ethylene glycol device.
Background
In the ethylene glycol plant, a TEG (triethylene glycol) tower light component removal device is a common device for removing light components from TEG solution to ensure quality and performance of TEG products, and the higher the quality of TEG products, the wider the application of the TEG products to downstream industries, so that the downstream industries have larger demands for TEG products with higher purity.
The content of light components in the TEG product is higher, so that the purity of the whole TEG product is reduced, therefore, the feeding of the TEG rectifying tower is adjusted, the content of diethylene glycol in the feeding is reduced, and the diethylene glycol content in the feeding is detected by analysis and found to be far lower than a design value, but the diethylene glycol content in the TEG product is still very high; aiming at the phenomenon, the utility model provides a light component removing device of a glycol device TEG tower, which reduces the problem of high light component content in a TEG product.
Disclosure of Invention
In order to solve the technical problems, the design provides a light component removal device of a TEG tower of an ethylene glycol device, which adopts the following technical scheme:
the utility model provides a glycol plant TEG tower light component desorption equipment, includes TEG rectifying column, TEG rectifying column light component extraction pump, TEG rectifying column product extraction pump, TEG rectifying column tower cauldron pump, TEG rectifying column reboiler and TEG product cooler, TEG rectifying column inside be three sections, inside from bottom to top is equipped with TEG rectifying column packing a, TEG rectifying column packing b, TEG rectifying column packing c in proper order, wherein third section TEG rectifying column packing c upper portion increases the sidedraw and draws the light component, mainly removes the light component at TEG rectifying column top; the lower part of the TEG rectifying tower is provided with a TEG rectifying tower kettle liquid level meter, a TEG rectifying tower filler a is provided with a TEG tower thermometer, and the adding amount of steam is controlled and regulated according to the temperature of the TEG rectifying tower.
The lower part of the TEG rectifying tower is provided with a heavy alcohol delivery pipeline, and the heavy alcohol delivery pipeline is provided with a TEG rectifying tower kettle pump, a TEG rectifying tower kettle filter and a TEG rectifying tower kettle delivery liquid level control valve;
a pipeline which is communicated with a TEG rectifying tower reboiler is arranged between the TEG rectifying tower kettle filter and the TEG rectifying tower kettle outer liquid level control valve, a flowmeter a and a flow control valve a are arranged on the connecting pipeline, the TEG rectifying tower reboiler is communicated with a heat source pipeline, 1.4Mpag steam is adopted as a heat source, and a flowmeter b and a flow control valve b are arranged on the heat source pipeline;
the lower part of the TEG rectifying tower filler c is provided with a return pipeline and an outward pipeline, and the return pipeline is sequentially provided with a gate valve a, a TEG rectifying tower product extraction pump, a TEG rectifying tower return filter, a flowmeter c and a flow control valve c; the external conveying pipeline is communicated with the TEG product cooler, the TEG product cooler is communicated with the intermediate product tank through a pipeline, and the communication pipeline is provided with a TEG product online analyzer, a flowmeter d and a flow control valve d;
the upper part of the TEG rectifying tower filling c is communicated with an unqualified product tank through a pipeline, a gate valve b, a TEG rectifying tower light component extraction pump, a flowmeter e and a flow control valve e are sequentially arranged on the communicated pipeline, the upper part of the TEG rectifying tower filling c is connected with the TEG rectifying tower light component extraction pump through the pipeline to distribute light components extracted from the top of the TEG rectifying tower to the unqualified product tank, and the gate valve b is arranged on a recycling pipeline to be returned for refining, and is used for automatically controlling the flow control valve to adjust the flow through the flowmeter.
Preferably: in order to achieve high heat transfer coefficient, compact structure, convenient installation, short residence time of tower bottom liquid in a heating section, difficult scaling, convenient adjustment, small occupied area, low equipment and operation cost and the like, the TEG rectifying tower reboiler is a falling film reboiler.
Preferably: in order to maintain the vacuum degree of the TEG rectifying tower, a large amount of alcohol-containing materials at the top are prevented from entering wastewater, so that the COD of the whole wastewater exceeds the standard, and a condenser at the top of the TEG rectifying tower is arranged at the top of the TEG rectifying tower.
Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, the upper section of the TEG rectifying tower is added with one section of TEG rectifying tower filler c, and the side line extraction of the light component at the upper part of the third section of filler is added, and the light component extraction pump of the TEG rectifying tower is sent to the reject tank, so that the concentration of the light component in the TEG product is reduced, part of the light component is recycled, the loss of materials is reduced, and the economic benefit of the device is improved.
Drawings
Fig. 1 is a schematic structural diagram of a light component removal device of a TEG tower of an ethylene glycol unit.
In the figure: 1-TEG rectifying tower, 1-1-TEG rectifying tower filler a,1-2-TEG rectifying tower filler b,1-3-TEG rectifying tower filler c,2-TEG rectifying tower kettle pump, 3-TEG rectifying tower kettle filter, 4-TEG rectifying tower kettle liquid level meter, 5-TEG rectifying tower kettle liquid level control valve, 6-flowmeter a, 7-flowmeter a, 8-flowmeter b, 9-flowmeter b,10-TEG rectifying tower reboiler, 11-TEG rectifying tower product extraction pump, 12-TEG rectifying tower reflux filter, 13-flowmeter c, 14-flowmeter c, 15-sluice valve a,16-TEG product cooler, 17-flowmeter d, 18-flowmeter d,19-TEG rectifying tower light component extraction pump, 20-flowmeter e, 21-flowmeter e, 22-sluice valve b,23-TEG rectifying tower top condenser, 24-TEG rectifying tower temperature meter, 25-TEG product online analyzer.
Detailed Description
Example 1
As shown in fig. 1:
a light component removing device of a glycol device TEG tower comprises a TEG rectifying tower 1, a TEG rectifying tower light component extracting pump 19, a TEG rectifying tower product extracting pump 11, a TEG rectifying tower kettle pump 2, a TEG rectifying tower reboiler 10 and a TEG product cooler 16, wherein in order to maintain the vacuum degree of the TEG rectifying tower, a large amount of alcohol-containing materials at the top are prevented from entering wastewater, so that the COD of the whole wastewater exceeds the standard, and a TEG rectifying tower top condenser 23 is arranged at the top of the TEG rectifying tower 1; the TEG rectifying tower 1 is internally provided with three sections, namely a TEG rectifying tower filler a1-1, a TEG rectifying tower filler b1-2 and a TEG rectifying tower filler c1-3 from bottom to top, wherein the upper part of the TEG rectifying tower filler c1-3 in the third section is added with a lateral line for extracting light components, and the light components at the top of the TEG rectifying tower are mainly removed; the lower part of the TEG rectifying tower 1 is provided with a TEG rectifying tower kettle liquid level meter 4, the TEG rectifying tower filler a1-1 is provided with a TEG tower thermometer 24, and the addition amount of steam is controlled and regulated according to the temperature of the TEG rectifying tower.
The lower part of the TEG rectifying tower 1 is provided with a heavy alcohol delivery pipeline, and the heavy alcohol delivery pipeline is provided with a TEG rectifying tower kettle pump 2, a TEG rectifying tower kettle filter 3 and a TEG rectifying tower kettle delivery liquid level control valve 5;
a pipeline which is communicated with a TEG rectifying tower reboiler 10 is arranged between the TEG rectifying tower kettle filter 3 and the TEG rectifying tower kettle outer liquid level control valve 5, a flowmeter a6 and a flow control valve a7 are arranged on the connecting pipeline, the TEG rectifying tower reboiler 10 is communicated with a heat source pipeline, 1.4Mpa steam is adopted as a heat source, and a flowmeter b8 and a flow control valve b9 are arranged on the heat source pipeline; in order to achieve high heat transfer coefficient, compact structure, convenient installation, short residence time of tower bottom liquid in a heating section, difficult scaling, convenient adjustment, small occupied area, low equipment and operation cost and the like, the TEG rectifying tower reboiler 10 is a falling film reboiler.
The lower part of the TEG rectifying tower packing c1-3 is provided with a return pipeline and an outgoing pipeline, and the return pipeline is sequentially provided with a gate valve a15, a TEG rectifying tower product extraction pump 11, a TEG rectifying tower return filter 12, a flowmeter c13 and a flow control valve c14; the external conveying pipeline is communicated with the TEG product cooler 16, the TEG product cooler 16 is communicated with the intermediate product tank through a pipeline, and the communication pipeline is provided with a TEG product online analyzer 25, a flowmeter d17 and a flow control valve d18;
the upper part of the TEG rectifying tower filling c1-3 is communicated with an unqualified product tank through a pipeline, a gate valve b22, a TEG rectifying tower light component extraction pump 19, a flow meter e20 and a flow control valve e21 are sequentially arranged on the communicated pipeline, the upper part of the TEG rectifying tower filling c1-3 is connected with the TEG rectifying tower light component extraction pump 19 through a pipeline, the gate valve b22 is arranged on the pipeline, the flow of the light component extracted from the top of the TEG rectifying tower 1 is regulated by the flow control valve e21 under automatic control of the flow meter e20, and the light component extracted from the top of the TEG rectifying tower 1 is distributed to the unqualified product tank for re-recovery after the return refining.
The TEG rectifying tower 1 uses the characteristic that each component in the mixture has different volatility, that is, the vapor pressure of each component is different at the same temperature, so that the light component (low-boiling-point substance) in the liquid phase is transferred to the gas phase, and the heavy component (high-boiling-point substance) in the gas phase is transferred to the liquid phase, thereby realizing the separation purpose.
The working principle of the utility model is as follows:
according to the utility model, a section of TEG rectifying tower filler c1-3 is added to the upper section of the inside of a TEG rectifying tower 1, meanwhile, the side line extraction light component of the upper part of the TEG rectifying tower filler c1-3 is added, and a TEG rectifying tower light component extraction pump 19 is externally sent to a defective product tank, the flow control of a reflux pipeline is performed according to the purity of a TEG product in a TEG product online analyzer 25, MEG and DEG concentration and the like are displayed, the reflux quantity is increased when the light component content is high, the reflux quantity is controlled by a flow meter c13, the side line extraction quantity of the light component of the upper part of the TEG rectifying tower filler c1-3 is increased, the side line extraction quantity of the light component of the upper part of the TEG rectifying tower filler c1-3 is controlled by a flow meter e20, the light component content is reduced, and the purity of the TEG product is maintained. Not only reduces the concentration of light components in the TEG product, but also recovers part of the light components, reduces the loss of materials and improves the economic benefit of the device.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (4)
1. The utility model provides a light component removal device of a glycol device TEG tower, which comprises a TEG rectifying tower (1), a TEG rectifying tower light component extraction pump (19), a TEG rectifying tower product extraction pump (11), a TEG rectifying tower kettle pump (2), a TEG rectifying tower reboiler (10) and a TEG product cooler (16), wherein a TEG rectifying tower filler a (1-1) and a TEG rectifying tower filler b (1-2) are sequentially arranged in the TEG rectifying tower (1) from bottom to top,
the lower part of the TEG rectifying tower (1) is provided with a heavy alcohol delivery pipeline, and the heavy alcohol delivery pipeline is provided with a TEG rectifying tower kettle pump (2), a TEG rectifying tower kettle filter (3) and a TEG rectifying tower kettle delivery liquid level control valve (5);
a pipeline which is communicated with a TEG rectifying tower reboiler (10) is arranged between the TEG rectifying tower kettle filter (3) and the TEG rectifying tower kettle outer liquid level control valve (5), a flowmeter a (6) and a flow control valve a (7) are arranged on the connecting pipeline, the TEG rectifying tower reboiler (10) is communicated with a heat source pipeline, and a flowmeter b (8) and a flow control valve b (9) are arranged on the heat source pipeline;
a reflux pipeline and an outward pipeline are arranged on the TEG rectifying tower (1), and a gate valve a (15), a TEG rectifying tower product extraction pump (11), a TEG rectifying tower reflux filter (12), a flowmeter c (13) and a flow control valve c (14) are sequentially arranged on the reflux pipeline; the said delivery pipeline is connected with TEG product cooler (16), the said TEG product cooler (16) is connected with intermediate product tank through pipeline, there are online analyzer (25) of TEG product on the communicating pipeline, flowmeter d (17) and flow control valve d (18), characterized by that,
the upper part of the TEG rectifying tower filler b (1-2) is provided with a TEG rectifying tower filler c (1-3),
the upper part of the TEG rectifying tower packing c (1-3) is communicated with an unqualified product tank through a pipeline, and a gate valve b (22), a TEG rectifying tower light component extraction pump (19), a flowmeter e (20) and a flow control valve e (21) are sequentially arranged on the communicated pipeline.
2. The ethylene glycol apparatus TEG tower light component removal device of claim 1, wherein: the TEG rectifying tower reboiler (10) is a falling film reboiler.
3. The ethylene glycol apparatus TEG tower light component removal device of claim 1, wherein: and a condenser (23) at the top of the TEG rectifying tower is arranged at the top of the TEG rectifying tower (1).
4. The ethylene glycol apparatus TEG tower light component removal device of claim 1, wherein: the lower part of the TEG rectifying tower (1) is provided with a TEG rectifying tower kettle liquid level meter (4), and a TEG rectifying tower thermometer (24) is arranged at a TEG rectifying tower filler a (1-1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321489668.8U CN219963989U (en) | 2023-06-12 | 2023-06-12 | Light component removal equipment of ethylene glycol device TEG tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321489668.8U CN219963989U (en) | 2023-06-12 | 2023-06-12 | Light component removal equipment of ethylene glycol device TEG tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219963989U true CN219963989U (en) | 2023-11-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321489668.8U Active CN219963989U (en) | 2023-06-12 | 2023-06-12 | Light component removal equipment of ethylene glycol device TEG tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219963989U (en) |
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2023
- 2023-06-12 CN CN202321489668.8U patent/CN219963989U/en active Active
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