CN217351265U - Heat exchange device for distillate at tower top of hydrogen sulfide stripping tower - Google Patents
Heat exchange device for distillate at tower top of hydrogen sulfide stripping tower Download PDFInfo
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- CN217351265U CN217351265U CN202220640202.2U CN202220640202U CN217351265U CN 217351265 U CN217351265 U CN 217351265U CN 202220640202 U CN202220640202 U CN 202220640202U CN 217351265 U CN217351265 U CN 217351265U
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- Prior art keywords
- hydrogen sulfide
- stripping tower
- heat exchanger
- sulfide stripping
- circulating water
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- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 229910000037 hydrogen sulfide Inorganic materials 0.000 title claims abstract description 95
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 148
- 239000003507 refrigerant Substances 0.000 claims abstract description 33
- 238000001816 cooling Methods 0.000 claims abstract description 15
- 238000010992 reflux Methods 0.000 claims abstract description 10
- 238000004891 communication Methods 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 abstract description 21
- 239000002737 fuel gas Substances 0.000 abstract description 14
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052717 sulfur Inorganic materials 0.000 abstract description 6
- 239000011593 sulfur Substances 0.000 abstract description 6
- 238000012546 transfer Methods 0.000 description 8
- 230000008901 benefit Effects 0.000 description 7
- 239000005864 Sulphur Substances 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003518 caustics Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Gas Separation By Absorption (AREA)
Abstract
The utility model discloses a heat exchange device for distillate at the top of a hydrogen sulfide stripping tower, which comprises a hydrogen sulfide stripping tower, an air cooler at the top of the hydrogen sulfide stripping tower, a heat exchanger at the top of the hydrogen sulfide stripping tower, a reflux tank at the top of the hydrogen sulfide stripping tower, a refrigerant water input part and a refrigerant water output part; the overhead distillate output by the hydrogen sulfide stripping tower flows through the hydrogen sulfide stripping tower top air cooler for cooling and then flows into the hydrogen sulfide stripping tower top heat exchanger, and the overhead distillate flows out of the hydrogen sulfide stripping tower top heat exchanger into the hydrogen sulfide stripping tower top reflux tank; the refrigerant water output by the refrigerant water input part flows into the hydrogen sulfide stripping tower top heat exchanger; the refrigerant water flows out of the hydrogen sulfide stripping tower top heat exchanger to the refrigerant water output part; and the overhead distillate and the refrigerant water exchange heat in the hydrogen sulfide stripping tower top heat exchanger. Can reduce the liquefied gas component in the sulfur-containing fuel gas, and effectively recycle the liquefied gas component with high added value.
Description
Technical Field
The utility model belongs to the technical field of petrochemical, specifically speaking relates to a hydrogen sulfide stripping tower top of tower distillate heat transfer device.
Background
In terms of the existing hydrogenation device, liquefied gas components in the sulfur-containing fuel gas discharged from a reflux tank at the top of a hydrogen sulfide stripping tower generally account for 40% of the volume percentage, and if the liquefied gas components in the gas are not recovered by a recovery device subsequently, the sulfur-containing fuel gas is directly used as fuel to a fuel gas pipe network after being desulfurized, and because the fuel consumption in summer is reduced, redundant liquefied gas components with high added values cannot be effectively recovered, the large economic loss is caused.
The phenomenon that the liquefied gas component in the sulfur-containing fuel gas of the stripping tower cannot be effectively recovered can cause great waste of resources and energy, the cost is increased, and the economic benefit is influenced.
Meanwhile, petrochemical enterprises can take away the low-temperature heat generated by the device by utilizing hot water circulation in the production process, and the circulating hot water can be used for replacing steam as a pipeline for heat tracing and heating a building in winter so as to continuously take away the low-temperature heat generated by the device. However, in summer, the hot water cannot be fully utilized, most of the low-temperature heat cannot be taken out, and the process medium must be cooled by air cooling or water cooling, so that the power consumption is increased.
Therefore, research and development a hydrogen sulfide stripper tower top distillate heat transfer device can reduce the liquefied gas component in the sulphur-containing fuel gas, and the liquefied gas component of high added value is effectively retrieved, reduces the energy resource consumption, improves economic benefits, can consume unnecessary hot water simultaneously, for the technical problem who awaits the solution urgently.
Disclosure of Invention
To the problem pointed out in the background art, the utility model provides a hydrogen sulfide stripping tower overhead distillate heat transfer device can reduce liquefied gas component in the sulphur-containing fuel gas, and the liquefied gas component of high added value is effectively retrieved, reduces the energy resource consumption, improves economic benefits, can consume unnecessary hot water simultaneously.
In order to realize the purpose of the utility model, the utility model adopts the following technical scheme to realize:
a liquefied gas recovery device of a hydrogen sulfide stripping tower of a hydrogenation device comprises a hydrogen sulfide stripping tower, an air cooler at the top of the hydrogen sulfide stripping tower, a heat exchanger at the top of the hydrogen sulfide stripping tower, a reflux tank at the top of the hydrogen sulfide stripping tower, a refrigerant water input part and a refrigerant water output part; wherein the overhead distillate output by the hydrogen sulfide stripping tower flows into the hydrogen sulfide stripping tower top heat exchanger after flowing through the hydrogen sulfide stripping tower top air cooler for cooling, and the overhead distillate flows out of the hydrogen sulfide stripping tower top heat exchanger into the hydrogen sulfide stripping tower top reflux tank; the chilled gate water output by the chilled water input part flows into the hydrogen sulfide stripping tower top heat exchanger; the refrigerant water flows out of the hydrogen sulfide stripping tower top heat exchanger to the refrigerant water output part; and the overhead distillate and the refrigerant water exchange heat in the hydrogen sulfide stripping tower top heat exchanger.
In some embodiments of the present application, further comprising a circulating water input and a circulating water output; wherein,
circulating water output by the circulating water input part flows into the hydrogen sulfide stripping tower top heat exchanger; the circulating water flows out of the hydrogen sulfide stripping tower top heat exchanger to the circulating water output pipeline; and the overhead distillate and the circulating water exchange heat in the hydrogen sulfide stripping tower top heat exchanger.
In some embodiments of the present application, the system further comprises a communication comprising a chilled water input line in communication with the inlet of the chilled water heat exchanger and a chilled water output line in communication with the outlet of the chilled water heat exchanger.
In some embodiments of the present application, a first valve is connected in the chilled water input pipeline, and the first valve is used for controlling the on-off of the chilled water input pipeline; and a second valve is connected in the chilled water output pipeline and is used for controlling the on-off of the chilled water output broken line.
In some embodiments of the present application, the communication portion further includes a circulating water input line and a circulating water output line, the circulating water input line is communicated with the inlet of the circulating water heat exchanger, and the outlet of the circulating water heat exchanger is communicated with the circulating water output line.
In some embodiments of the present application, a third valve is connected in the circulating water input pipeline, and the third valve is used for controlling the on-off of the circulating water input pipeline; and a fourth valve is connected in the circulating water output pipeline and is used for controlling the on-off of the circulating water output pipeline.
In some embodiments of the present application, the hydrogen sulfide stripping overhead heat exchanger is a plate heat exchanger.
In some embodiments herein, the hydrogen sulfide stripper overhead heat exchanger is 316L.
Compared with the prior art, the utility model discloses an advantage is with positive effect:
through setting up hydrogen sulfide stripping tower top air cooler, carry out preliminary heat transfer to the overhead distillate of hydrogen sulfide stripping tower output, according to the demand of heat transfer, still be provided with refrigerant water and carry out the heat transfer through hydrogen sulfide stripping tower top heat exchanger and overhead distillate, carry out further heat transfer to overhead distillate, thereby reach the purpose of abundant heat transfer, make liquefied gas component in the reduction sulphur-containing fuel gas, the liquefied gas component of high added value is effectively retrieved, reduce energy resource consumption, improve economic benefits.
Other features and advantages of the present invention will become more apparent from the following detailed description of the invention when read in conjunction with the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is an overall schematic view of an embodiment of the present invention;
reference numerals:
100, a hydrogen sulfide stripper;
200, hydrogen sulfide stripping tower top air cooler;
300, hydrogen sulfide stripping tower top heat exchanger;
400, hydrogen sulfide stripping tower top reflux tank;
510, a first valve; 520, a second valve; 530, a third valve; 540, a fourth valve;
600, a chilled water input; 610, a chilled water input line; 620, a chilled water output line; 630, circulating water input line; 640, circulating water output pipeline.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in this application will be understood to be a specific case for those of ordinary skill in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The following disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of specific examples are described below. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.
In this embodiment, the liquefied gas component (C3 +) in the sulfur-containing fuel gas discharged from the reflux tank 400 of the hydrogen sulfide stripping tower generally accounts for 40% by volume, and if the liquefied gas component in the gas is not recovered by the recovery device subsequently, the sulfur-containing fuel gas is directly used as a fuel to a fuel gas pipe network after being desulfurized, and the liquefied gas component with a high added value cannot be effectively recovered, thereby causing benefit loss. This is often the case in summer, where the production of fuel gas is greater and less fuel gas is consumed.
The overhead from the hydrogen sulfide stripper 100 needs to be cooled sufficiently to reduce the liquefied gas content thereof. If the liquid with the excessively high temperature is directly cooled by water, the liquid is easy to be polluted, so that the air cooling and the water cooling are required to be carried out on the liquid with the high temperature.
Therefore, a hydrogen sulfide stripping tower top air cooler 200 is arranged, and after the tower top distillate discharged from the hydrogen sulfide stripping tower 100 is cooled by the hydrogen sulfide stripping tower top air cooler 200, if the requirements are met, further cooling is not needed; if the proportion of liquefied gas in the exhaust fuel gas is still high and cannot be completely consumed by the heating furnace, further cooling is required.
In this example, further water cooling is heat exchanged using a hydrogen sulfide stripper overhead heat exchanger 300, as shown in FIG. 1. The hydrogen sulfide stripping overhead heat exchanger 300 may be a plate heat exchanger because the pressure of the overhead distillate is not too high and the characteristics of the plate heat exchanger, such as high heat exchange efficiency, small volume, and convenient installation, are taken into consideration.
Meanwhile, considering that a highly corrosive substance exists in the distillate at the tower top, 316L is selected as the material of the hydrogen sulfide stripping tower top heat exchanger 300.
The heat exchange medium can adopt circulating water, and the circulating water is used as a medium to exchange heat with the hydrogen sulfide.
A circulating water input part is arranged for realizing the input of the circulating water, and the circulating water is input into the hydrogen sulfide stripping tower top heat exchanger 300 from the circulating water input part.
In order to realize the output of the circulating water from the hydrogen sulfide stripping tower top heat exchanger 300, a circulating water output part is arranged and outputs the circulating water.
Because the temperature of the circulating water is close to the ambient temperature, the seasonal difference of the temperature of the circulating water is large, and the temperature of the circulating water is also low due to the low ambient temperature in winter. Therefore, circulating water is adopted for heat exchange in winter, the heat exchange efficiency is relatively high, and the heat exchange requirement can be generally met; and circulating water is adopted for heat exchange in summer, so that the heat exchange efficiency is relatively low.
If the cooling requirement is met through the heat exchange and cooling of the circulating water, the circulating water can be used as a medium for heat exchange; if the heat exchange requirement cannot be met, a medium with lower temperature needs to be adopted for heat exchange.
In this case, heat can be exchanged with hydrogen sulfide gas in the hydrogen sulfide stripper overhead heat exchanger 300 using chilled water as a medium.
Because the circulating water is particularly poor in heat exchange effect in summer, and the hot water produced by chemical enterprises in summer can not find users, the hot water is used for producing refrigerant water.
The lithium bromide refrigerating unit is adopted to produce the refrigerant water with lower temperature by absorbing the heat of the hot water and adopting a circulating water cooling mode. When the temperature of the hot water is reduced, the refrigerant water with lower temperature and capable of being used for heat exchange is generated.
In order to input the refrigerant water, a refrigerant water input part 600 is provided, and the refrigerant water is input into the hydrogen sulfide stripping tower top heat exchanger 300 through the refrigerant water input part 600.
In order to realize the output of the chilled water from the hydrogen sulfide stripping tower top heat exchanger 300, a chilled water output part is arranged and outputs the chilled water.
The chilled water temperature was 7 ℃ and the target temperature of the reflux drum 400 at the top of the hydrogen sulfide stripping column was 30 ℃. The temperature difference of the refrigerant water relative to the circulating water and the hydrogen sulfide stripping tower top heat exchanger 300 is large, the refrigerant water and the hydrogen sulfide steam exchange heat in the hydrogen sulfide stripping tower top heat exchanger 300, and the cooling effect on the hydrogen sulfide steam is good.
In order to realize the heat exchange of the refrigerant water or the circulating water or the heat exchange of the overhead air cooler 200 of the hydrogen sulfide stripping tower, the heat exchange of the refrigerant water and the heat exchange of the circulating water are connected in parallel in the embodiment.
In this embodiment, the connection portion further includes a chilled water input line 610, a chilled water output line 620, a circulating water input line 630, and a circulating water output line 640.
A chilled water input line 610 is used for communication of the chilled water input 600 with the hydrogen sulfide stripper top heat exchanger 300 and a chilled water output line 620 is used for communication of the chilled water output with the hydrogen sulfide stripper top heat exchanger 300.
The circulating water input line 630 is used for communicating the circulating water input with the hydrogen sulfide stripper overhead heat exchanger 300, and the circulating water output line 640 is used for communicating the circulating water output with the hydrogen sulfide stripper overhead heat exchanger 300.
To achieve the selection of chilled water and circulating water as cooling media, a first valve 510 is connected in the chilled water input line 610 and a second valve 520 is connected in the chilled water output line.
A third valve 530 is connected to the circulating water inlet line 630, and a fourth valve 540 is connected to the circulating water outlet line 640.
If the refrigerant water is used as the heat exchange medium, the first valve 510 and the second valve 520 are closed.
If circulating water is used as the heat exchange medium, the third valve 530 and the fourth valve 540 are closed.
If only the hydrogen sulfide stripper overhead cooler 200 is used for heat exchange, the first valve 510, the second valve 520, the third valve 530, and the fourth valve 540 are closed.
Thereby the switchable operation of three heat exchange modes is realized.
Thereby realizing the purposes of reducing energy consumption and fully utilizing energy.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A hydrogen sulfide stripper overhead heat exchange apparatus comprising:
a hydrogen sulfide stripping column;
an air cooler at the top of the hydrogen sulfide stripping tower;
a hydrogen sulfide stripping tower top heat exchanger;
a reflux tank at the top of the hydrogen sulfide stripping tower;
a refrigerant water input part;
a refrigerant water output part;
the overhead distillate output by the hydrogen sulfide stripping tower flows through the hydrogen sulfide stripping tower top air cooler for cooling and then flows into the hydrogen sulfide stripping tower top heat exchanger, and the overhead distillate flows out of the hydrogen sulfide stripping tower top heat exchanger into the hydrogen sulfide stripping tower top reflux tank;
the cold gate water output by the refrigerant water input part flows into the hydrogen sulfide stripping tower top heat exchanger; the refrigerant water flows out of the hydrogen sulfide stripping tower top heat exchanger to the refrigerant water output part;
and the overhead distillate and the refrigerant water exchange heat in the hydrogen sulfide stripping tower top heat exchanger.
2. The hydrogen sulfide stripper overhead heat exchange apparatus of claim 1, further comprising:
a circulating water input part;
a circulating water output unit;
wherein,
circulating water output by the circulating water input part flows into the hydrogen sulfide stripping tower top heat exchanger; the circulating water flows out of the hydrogen sulfide stripping tower top heat exchanger to the circulating water output pipeline;
and the overhead distillate and the circulating water exchange heat in the hydrogen sulfide stripping tower top heat exchanger.
3. The hydrogen sulfide stripper overhead heat exchange apparatus of claim 2 further comprising a communication comprising a chilled water input line in communication with an inlet of the chilled water heat exchanger and a chilled water output line, an outlet of the chilled water heat exchanger in communication with the chilled water output line.
4. The hydrogen sulfide stripping tower overhead heat exchange device of claim 3, wherein a first valve is connected in the refrigerant water input line, and the first valve is used for controlling the on-off of the refrigerant water input line; and a second valve is connected in the chilled water output pipeline and is used for controlling the on-off of the chilled water output broken line.
5. The hydrogen sulfide stripper overhead heat exchange apparatus of claim 3, wherein the communication section further comprises a circulating water input line and a circulating water output line, the circulating water input line is in communication with the inlet of the circulating water heat exchanger, and the outlet of the circulating water heat exchanger is in communication with the circulating water output line.
6. The hydrogen sulfide stripping tower overhead heat exchange unit of claim 5, wherein a third valve is connected to the circulating water input line, and the third valve is used for controlling the on-off of the circulating water input line; and a fourth valve is connected in the circulating water output pipeline and is used for controlling the on-off of the circulating water output pipeline.
7. The hydrogen sulfide stripper overhead heat exchange unit of claim 1, wherein the hydrogen sulfide stripper overhead heat exchanger is a plate heat exchanger.
8. The hydrogen sulfide stripper overhead heat exchange apparatus of claim 1, wherein the hydrogen sulfide stripper overhead heat exchanger is 316L in material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220640202.2U CN217351265U (en) | 2022-03-23 | 2022-03-23 | Heat exchange device for distillate at tower top of hydrogen sulfide stripping tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220640202.2U CN217351265U (en) | 2022-03-23 | 2022-03-23 | Heat exchange device for distillate at tower top of hydrogen sulfide stripping tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217351265U true CN217351265U (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220640202.2U Active CN217351265U (en) | 2022-03-23 | 2022-03-23 | Heat exchange device for distillate at tower top of hydrogen sulfide stripping tower |
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| Country | Link |
|---|---|
| CN (1) | CN217351265U (en) |
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2022
- 2022-03-23 CN CN202220640202.2U patent/CN217351265U/en active Active
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