CN219412839U - Corrosion inhibition device for refining dehydrogenation system - Google Patents
Corrosion inhibition device for refining dehydrogenation system Download PDFInfo
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- CN219412839U CN219412839U CN202320028641.2U CN202320028641U CN219412839U CN 219412839 U CN219412839 U CN 219412839U CN 202320028641 U CN202320028641 U CN 202320028641U CN 219412839 U CN219412839 U CN 219412839U
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Abstract
The utility model provides a corrosion inhibition device for a refining dehydrogenation system, which comprises a product gas pipeline, a compression system and a neutralizer tank, wherein the compression system comprises a first compressor section, a second compressor section and a third compressor section which are sequentially connected, the product gas pipeline is connected to a first separation tank, the top outlet of the first separation tank is connected to the inlet of the first compressor section through a first pipeline, the outlet of the first compressor section is connected to a second separation tank through a second pipeline, the second pipeline is connected with a first cooler, the bottom outlet of the neutralizer tank is connected to the second pipeline through a third pipeline, the connection point of the third pipeline and the second pipeline is positioned at the upstream of the first cooler, and a neutralizer pump is arranged on the third pipeline. The alkaline neutralizer is injected to the front of the outlet cooler of the product gas compressor of the dehydrogenation device to neutralize the cooled acidic substances, so that the neutralization and elimination effects on the acidic gases such as CO2, H2S, acetic acid and the like in the system can be effectively achieved, and the purposes of reducing corrosion and prolonging the service life of equipment are further achieved.
Description
Technical Field
The utility model relates to the technical field of chemical industry, in particular to a corrosion inhibition device for a refining dehydrogenation system.
Background
The existing dehydrogenation unit product gas compressor is used for compressing product gas to achieve the pressure required for separation. However, the medium contains a small amount of acid gases such as CO2, H2S and acetic acid, and impurities such as gaseous water, and the acid gases are dissolved in the water when passing through the inter-compressor-stage cooler and cooled to form local acid dew point corrosion, and pit-like corrosion is formed on the surfaces of equipment (pipelines and coolers), so that perforation leakage of the equipment is caused.
Disclosure of Invention
In view of the shortcomings of the prior art, the utility model aims to provide a corrosion inhibition device used in a refining dehydrogenation system.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
the utility model provides a corrosion inhibition device for in refining dehydrogenation system, includes product gas line and compression system, compression system includes the compressor first section, compressor second section and the compressor third section that connects gradually, product gas line is connected to first knockout drum, the top export of first knockout drum is connected to the entry of compressor first section through first pipeline, the export of compressor first section is connected to the second knockout drum through the second pipeline, be connected with first cooler on the second pipeline, still include the neutralizer jar, neutralizer jar bottom export is connected to through the third pipeline on the second pipeline, wherein the third pipeline with the tie point of second pipeline is located the upper reaches of first cooler, be provided with the neutralizer pump on the third pipeline.
Further, the top outlet of the second separation tank is connected to the inlet of the second section of the compressor through a fourth pipeline, the outlet of the second section of the compressor is connected to the inlet of the third separation tank through a fifth pipeline, a third cooler is arranged on the fifth pipeline, the bottom outlet of the neutralizer tank is connected to the fifth pipeline through a sixth pipeline, wherein the connection point of the sixth pipeline and the fifth pipeline is located at the upstream of the third cooler, and a neutralizer pump is arranged on the sixth pipeline.
Further, the top outlet of the third separation tank is connected to the inlet of the third section of the compressor through a seventh pipeline, the outlet of the third section of the compressor is connected to the inlet of the collecting tank through a ninth pipeline, a fourth cooler is arranged on the ninth pipeline, the bottom outlet of the neutralizer tank is connected with the ninth pipeline through a tenth pipeline, the connection point of the tenth pipeline and the ninth pipeline is located at the upstream of the fourth cooler, and a neutralizer pump is arranged on the tenth pipeline.
Further, the compressor section includes a first compressor and a second compressor arranged in series, an inlet of the first compressor and an inlet of the second compressor are connected to the first pipeline through pipelines, respectively, and an outlet of the first compressor and an outlet of the second compressor are connected to the second pipeline through pipelines, respectively.
Further, a first anti-surge pipeline is arranged between the second pipeline and the product gas pipeline, and a first control valve is arranged on the first anti-surge pipeline.
Further, a second anti-surge pipeline is arranged between the fifth pipeline and the second pipeline, and a second control valve is arranged on the second anti-surge pipeline.
Further, a third anti-asthma pipeline is arranged between the ninth pipeline and the fifth pipeline, and a third control valve is arranged on the third anti-asthma pipeline.
Further, a bottom outlet line of the collection tank is connected to a lower inlet of the third separation tank, and a bottom outlet of the first separation tank, a bottom outlet of the second separation tank, and a bottom outlet of the third separation tank are all connected to a condensate line through lines.
Further, a second cooler is arranged on the product gas pipeline.
Further, the alkaline neutralizer is filled in the neutralizer tank, and the main component of the alkaline neutralizer is 2-amino ethanol.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model provides a corrosion inhibition device for a refining dehydrogenation system, which comprises a product gas pipeline, a compression system and a neutralizer tank, wherein the compression system comprises a first compressor section, a second compressor section and a third compressor section which are sequentially connected, the product gas pipeline is connected to a first separation tank, the top outlet of the first separation tank is connected to the inlet of the first compressor section through a first pipeline, the outlet of the first compressor section is connected to a second separation tank through a second pipeline, the second pipeline is connected with a first cooler, the bottom outlet of the neutralizer tank is connected to the second pipeline through a third pipeline, the connection point of the third pipeline and the second pipeline is positioned at the upstream of the first cooler, and a neutralizer pump is arranged on the third pipeline. The alkaline neutralizer is injected to the front of the outlet cooler of the product gas compressor of the dehydrogenation device to neutralize the cooled acidic substances, so that the neutralization and elimination effects on the acidic gases such as CO2, H2S, acetic acid and the like in the system can be effectively achieved, and the purposes of reducing corrosion and prolonging the service life of equipment are further achieved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.
In the figure: 1. product gas line, 2, compressor one section, 2.1, first compressor, 2.2, second compressor, 3, compressor two section, 4, compressor three section, 5, first separator tank, 6, first line, 7, second line, 8, second separator tank, 9, first cooler, 10, neutralizer tank, 11, third line, 12, neutralizer pump, 13, fourth line, 14, fifth line, 15, third cooler, 16, sixth line, 17, seventh line, 18, ninth line, 19, fourth cooler, 20, tenth line, 21, first surge protection line, 22, first control valve, 23, second surge protection line, 24, second control valve, 25, third surge protection line, 26, third control valve, 27, collection tank, 28, condensate line, 29, second cooler, 30, third separator tank.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.
Example 1
As shown in FIG. 1, a corrosion inhibition apparatus for use in a refinery dehydrogenation system includes a product gas line 1 and a compression system and neutralizer tank 10. The compression system comprises a first compressor section 2, a second compressor section 3 and a third compressor section 4 which are sequentially connected, a product gas pipeline 1 is connected to an inlet at the upper part of a first separation tank 5, an outlet at the top of the first separation tank 5 is connected to an inlet of the first compressor section 2 through a first pipeline 6, an outlet of the first compressor section 2 is connected to a second separation tank 8 through a second pipeline 7, a first cooler 9 is connected to the second pipeline 7, an outlet at the bottom of a neutralizer tank 10 is connected to the second pipeline 7 through a third pipeline 11, a connection point of the third pipeline 11 and the second pipeline 7 is located at the upstream of the first cooler 9, and a neutralizer pump 12 is arranged on the third pipeline 11.
The top outlet of the second separation tank 8 is connected to the inlet of the second compressor section 3 through a fourth pipeline 13, the outlet of the second compressor section 3 is connected to the inlet of the third separation tank 30 through a fifth pipeline 14, a third cooler 15 is arranged on the fifth pipeline 14, the bottom outlet of the neutralizer tank 10 is connected to the fifth pipeline 14 through a sixth pipeline 16, wherein the connection point of the sixth pipeline 16 and the fifth pipeline 14 is positioned at the upstream of the third cooler 15, and a neutralizer pump 12 is arranged on the sixth pipeline 16.
The top outlet of the third separator tank 30 is connected to the inlet of the compressor three section 4 through a seventh line 17, the outlet of the compressor three section 4 is connected to the inlet of the collecting tank 27 through a ninth line 18, a fourth cooler 19 is provided on the ninth line 18, the bottom outlet of the neutralizer tank 10 is connected to the ninth line 18 through a tenth line 20, the connection point of the tenth line 20 and the ninth line 18 is located upstream of the fourth cooler 19, and a neutralizer pump 12 is provided on the tenth line 20. The neutralizer pump of this embodiment is a diaphragm pump.
The compressor section 2 of the present embodiment comprises a first compressor 2.1 and a second compressor 2.2 arranged in series, the inlet of the first compressor 2.1 and the inlet of the second compressor 2.2 being connected by means of lines to a first line 6, respectively, and the outlet of the first compressor 2.1 and the outlet of the second compressor 2.2 being connected by means of lines to a second line 7, respectively.
The neutralizer tank 10 of this embodiment contains an alkaline neutralizer, which is mainly composed of 2-aminoethanol. When the neutralizing agent is used, the neutralizing agent is introduced into the neutralizing agent tank 10, pressurized by the neutralizing agent pump 12 and continuously injected into the front of the outlet cooler of each section of the product gas compressor, so that the neutralizing agent can effectively neutralize and eliminate acid gases such as CO2, H2S, acetic acid and the like in the system, and further the purposes of reducing corrosion and prolonging the service life of equipment are achieved.
In order to ensure smooth operation of the compressor sections, a first anti-surge line 21 is provided between the second line 7 and the product gas line 1 of the present embodiment, and a first control valve 22 is provided on the first anti-surge line 21. A second anti-surge line 23 is arranged between the fifth line 14 and the second line 7, and a second control valve 24 is arranged on the second anti-surge line 23. A third anti-surge line 25 is provided between the ninth line 18 and the fifth line 14, and a third control valve 26 is provided on the third anti-surge line 25.
The bottom outlet line of the collection tank 27 of the present embodiment is connected to the lower inlet of the third separation tank 30, and the bottom outlet of the first separation tank 5, the bottom outlet of the second separation tank 8, and the bottom outlet of the third separation tank 30 are all connected to the condensate line 28 by lines.
The product gas line 1 of the present embodiment is provided with a second cooler 29 for heat exchanging the product gas.
It should be noted that, the neutralizing agent tanks in this embodiment are two, one is the neutralizing agent injected before the outlet cooler of the first section of the compressor and the second section of the compressor, and the other neutralizing agent tank is the neutralizing agent injected before the outlet cooler of the third section of the compressor, so that the design is reasonable and the neutralizing agent is convenient to inject. The acidic substances in the product gas can be dissolved in water when passing through the cooler between the compressor sections, and the alkaline neutralizer is filled before the cooler, so that the corrosion of the cooler can be slowed down, and the service life can be prolonged. The neutralizing agent is completely dissolved in water, can react with condensed acidic substances, and can be separated from the product gas along with condensate, so that the product quality is not affected. The neutralizing agent needs to ensure that the neutralizing agent does not contain organic halides, heavy metals and other substances harmful to equipment and catalysts, and meanwhile, the product quality is not influenced, and the downstream production is not influenced.
It should be noted that the detailed portions of the present utility model are not described in the prior art.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "configured," "connected," "secured," "screwed," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature "above," "over" and "on" a second feature may be a first feature directly above or obliquely above the second feature, or simply indicate that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.
In the description of the present utility model, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the spirit and scope of the utility model as defined by the appended claims and their equivalents.
Claims (10)
1. Corrosion inhibition device used in refining dehydrogenation system is characterized in that: including product gas line and compression system, compression system is including the first section of compressor, compressor second section and the compressor third section that connects gradually, product gas line is connected to first knockout drum, the top export of first knockout drum is connected to the entry of first section of compressor through first pipeline, the export of first section of compressor is connected to the second knockout drum through the second pipeline, be connected with first cooler on the second pipeline, still include the neutralizer jar, neutralizer jar bottom export is connected to through the third pipeline on the second pipeline, wherein the third pipeline with the tie point of second pipeline is located the upper reaches of first cooler, be provided with the neutralizer pump on the third pipeline.
2. The corrosion inhibition apparatus for use in a refinery dehydrogenation system according to claim 1 wherein: the top outlet of the second separation tank is connected to the inlet of the second section of the compressor through a fourth pipeline, the outlet of the second section of the compressor is connected to the inlet of the third separation tank through a fifth pipeline, a third cooler is arranged on the fifth pipeline, the bottom outlet of the neutralizer tank is connected to the fifth pipeline through a sixth pipeline, wherein the connection point of the sixth pipeline and the fifth pipeline is located at the upstream of the third cooler, and a neutralizer pump is arranged on the sixth pipeline.
3. The corrosion inhibition apparatus for use in a refinery dehydrogenation system according to claim 2 wherein: the top outlet of the third separation tank is connected to the inlet of the third section of the compressor through a seventh pipeline, the outlet of the third section of the compressor is connected to the inlet of the collecting tank through a ninth pipeline, a fourth cooler is arranged on the ninth pipeline, the bottom outlet of the neutralizer tank is connected with the ninth pipeline through a tenth pipeline, the connection point of the tenth pipeline and the ninth pipeline is located at the upstream of the fourth cooler, and a neutralizer pump is arranged on the tenth pipeline.
4. The corrosion inhibition apparatus for use in a refinery dehydrogenation system according to claim 1 wherein: the first compressor section comprises a first compressor and a second compressor which are arranged in series, the inlet of the first compressor and the inlet of the second compressor are connected to the first pipeline through pipelines respectively, and the outlet of the first compressor and the outlet of the second compressor are connected to the second pipeline through pipelines respectively.
5. The corrosion inhibition apparatus for use in a refinery dehydrogenation system according to claim 1 wherein: a first anti-surge pipeline is arranged between the second pipeline and the product gas pipeline, and a first control valve is arranged on the first anti-surge pipeline.
6. The corrosion inhibition apparatus for use in a refinery dehydrogenation system according to claim 2 wherein: a second anti-asthma pipeline is arranged between the fifth pipeline and the second pipeline, and a second control valve is arranged on the second anti-asthma pipeline.
7. The corrosion inhibition apparatus for use in a refinery dehydrogenation system according to claim 3 wherein: a third anti-asthma pipeline is arranged between the ninth pipeline and the fifth pipeline, and a third control valve is arranged on the third anti-asthma pipeline.
8. The corrosion inhibition apparatus for use in a refinery dehydrogenation system according to claim 3 wherein: the bottom outlet pipeline of the collecting tank is connected to the lower inlet of the third separating tank, and the bottom outlet of the first separating tank, the bottom outlet of the second separating tank and the bottom outlet of the third separating tank are all connected to the condensation pipeline through pipelines.
9. The corrosion inhibition apparatus for use in a refinery dehydrogenation system according to any one of claims 1-8 wherein: a second cooler is arranged on the product gas pipeline.
10. The corrosion inhibition apparatus for use in a refinery dehydrogenation system according to any one of claims 1-8 wherein: the alkaline neutralizer tank is filled with an alkaline neutralizer, and the main component of the alkaline neutralizer is 2-amino ethanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320028641.2U CN219412839U (en) | 2023-01-06 | 2023-01-06 | Corrosion inhibition device for refining dehydrogenation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320028641.2U CN219412839U (en) | 2023-01-06 | 2023-01-06 | Corrosion inhibition device for refining dehydrogenation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219412839U true CN219412839U (en) | 2023-07-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320028641.2U Active CN219412839U (en) | 2023-01-06 | 2023-01-06 | Corrosion inhibition device for refining dehydrogenation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219412839U (en) |
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2023
- 2023-01-06 CN CN202320028641.2U patent/CN219412839U/en active Active
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