CN209815888U - Be arranged in alkylation reaction waste acid hydrocarbon recovery unit - Google Patents
Be arranged in alkylation reaction waste acid hydrocarbon recovery unit Download PDFInfo
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- CN209815888U CN209815888U CN201920593291.8U CN201920593291U CN209815888U CN 209815888 U CN209815888 U CN 209815888U CN 201920593291 U CN201920593291 U CN 201920593291U CN 209815888 U CN209815888 U CN 209815888U
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Abstract
The utility model relates to a chemical industry technical field especially relates to a be arranged in alkylation reaction spent acid hydrocarbon recovery unit. The utility model discloses a: the system comprises an acid settling tank, a secondary settling tank, a flash tank, a reactor and connecting pipelines; the bottom of the acid settling tank is provided with three outlets, and one outlet pipeline is connected with an inlet at the top of the secondary settling tank; the other two outlet pipelines are connected with the inlet of the reactor and enter the shell side of the reactor; an outlet pipeline at the top of the acid settling tank is connected with an inlet at the bottom of the reactor and enters the tube pass of the reactor; an outlet pipeline at the top of the secondary settling tank is connected with an inlet of the flash tank; the outlet pipeline at the bottom of the secondary sedimentation tank discharges low-concentration waste acid; the outlet pipeline at the top of the flash tank sends the gas phase to the compressor. The utility model discloses technical scheme has solved among the prior art because of retrieving incompletely lead to exhaust acid to contain a certain amount of hydrocarbon mixture, can increase the emergence of dangerous accidents such as explosion, and the acid part of retrieving simultaneously can only burn as the waste material, causes economic loss.
Description
Technical Field
The utility model relates to a chemical industry technical field especially relates to an adopt secondary to subside recovery unit who retrieves hydrocarbon in alkylation reaction spent acid.
Background
In the sulfuric acid alkylation, isobutane and butene produce isooctane under the catalytic action of sulfuric acid. The concentration of catalyst sulfuric acid is continuously reduced in the alkylation process, so that the sulfuric acid with lower concentration needs to be regularly removed and replaced, the acid hydrocarbon mixture in the reactor is directly discharged to a waste acid tank after acid hydrocarbon is settled and separated in an acid settling tank in the prior art, but a certain amount of hydrocarbons are still mixed in the waste acid in the process, and the hydrocarbons are discharged to cause serious waste, so that a secondary acid settling tank is arranged, and the waste acid is discharged to a tank area after the hydrocarbons in the waste acid are recovered again.
The existing hydrocarbon recovery device can bring a large amount of liquefied petroleum gas to a storage tank area in acid discharge, which causes great harm: 1. the danger is increased, if improper operation is carried out, the discharge amount of liquefied petroleum hydrocarbon in waste acid is probably larger, the liquefied petroleum gas is dangerous flammable and explosive substances, namely substances in class AB, and the occurrence of dangerous accidents is greatly avoided after the technology is used; 2. causing material waste and bringing raw material materials to be finally burnt as waste materials, thereby greatly reducing the economic benefit of the alkylation device.
In view of the above problems in the prior art, it is necessary to develop a new apparatus for recovering hydrocarbons from waste acid from alkylation reaction, so as to overcome the problems in the prior art.
Disclosure of Invention
According to the above proposal, the discharged acid part contains a certain amount of hydrocarbon mixture due to incomplete recovery, which increases the occurrence of dangerous accidents such as explosion, and the recovered acid part can only be burned as waste materials, which causes economic loss and other technical problems, thereby providing a hydrocarbon recovery device for the waste acid of the alkylation reaction. The utility model discloses mainly carry out different forms's recovery many times to hydrocarbon material through addding secondary settling cask and flash tank to the guarantee safety that reaches, avoid extravagant and improve the effect of productivity.
The utility model discloses a technical means as follows:
a be arranged in alkylation reaction spent acid hydrocarbon recovery unit includes: the system comprises an acid settling tank, a secondary settling tank, a flash tank, a reactor and connecting pipelines;
furthermore, the bottom of the acid settling tank is provided with three outlets, wherein one outlet is connected with an inlet at the top of the secondary settling tank through a pipeline; the other two outlets are connected with an inlet at the upper part of the reactor through a pipeline and enter into the shell side of the reactor; the top of the acid settling tank is provided with an outlet which is connected with an inlet at the bottom of the reactor through a pipeline and enters the tube pass of the reactor;
further, the top of the secondary settling tank is also provided with an outlet; the pipeline is connected with an inlet at the top of the flash tank; an outlet is formed in the bottom of the secondary settling tank, and XX acid is discharged through a pipeline; the secondary settling tank is additionally arranged, so that the hydrocarbon mixture is greatly recycled, and the economic loss of a company is reduced.
The top of the flash tank is also provided with an outlet, and the gas phase is sent to a compressor through a pipeline; the bottom of the flash tank is provided with an outlet for sending the effluent to an effluent pump.
And further, a pneumatic valve bank is arranged on a connecting pipeline between an outlet at the lower part of the acid settling tank and an inlet at the top of the secondary settling tank.
And further, a pneumatic valve bank is arranged on a connecting pipeline between the outlet at the top of the secondary settling tank and the inlet at the top of the flash tank.
Compared with the prior art, the utility model has the advantages of it is following:
the utility model provides a hydrocarbon recovery unit in being used for alkylation reaction spent acid through setting up the secondary settling cask, can increase the recovery of hydrocarbon mixture in the low concentration acid, if the content of hydrocarbon mixture is too much can increase the emergence of dangerous accidents such as explosion in the low concentration acid, the sour part of while recovery can only burn as the waste material, causes economic loss, adds the secondary settling cask after, can fully separate low concentration acid and hydrocarbon mixture.
To sum up, use the technical scheme of the utility model the technical scheme solved among the prior art because of retrieving and not leading to containing a certain amount of hydrocarbon mixture in the exhaust acid part completely, can increase the emergence of dangerous accidents such as explosion, the acid part of retrieving simultaneously can only burn as the waste material, causes economic loss scheduling problem.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced 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 a schematic structural diagram of the present invention.
In the figure: 1. acid settling tank 2, secondary settling tank 3, pneumatic valve bank 4, flash tank 5 and reactor.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
As shown in the figure, the utility model provides a be arranged in alkylation reaction spent acid hydrocarbon recovery unit includes: an acid settling tank 1, a secondary settling tank 2, a flash tank 4, a reactor 5 and connecting pipelines; the bottom of the acid settling tank 1 is provided with three outlets, wherein one outlet is connected with an inlet at the top of the secondary settling tank 2 through a pipeline; the other two outlets are connected with an inlet at the upper part of the reactor 5 through a pipeline and enter the shell side of the reactor 5; the top of the acid settling tank 1 is provided with an outlet which is connected with an inlet at the bottom of the reactor 5 through a pipeline and enters the tube pass of the reactor 5; the top of the secondary settling tank 2 is also provided with an outlet; the pipeline is connected with an inlet at the top of the flash tank 4; the bottom of the secondary settling tank 2 is provided with an outlet, and XX acid is discharged through a pipeline; the top of the flash tank 4 is also provided with an outlet, and the gas phase is sent to a compressor through a pipeline; the bottom of the flash tank 4 is provided with an outlet for sending the effluent to an effluent pump.
And a pneumatic valve group 3 is arranged on a connecting pipeline between the outlet at the lower part of the acid settling tank 1 and the inlet at the top of the secondary settling tank 2.
And a pneumatic valve group 3 is arranged on a connecting pipeline between the outlet at the top of the secondary settling tank 2 and the inlet at the top of the flash tank 4.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (3)
1. A recovery unit for hydrocarbons in waste acid from alkylation reaction, characterized in that, the recovery unit includes: the system comprises an acid settling tank (1), a secondary settling tank (2), a flash tank (4), a reactor (5) and connecting pipelines;
the bottom of the acid settling tank (1) is provided with three outlets, and one outlet is connected with an inlet at the top of the secondary settling tank (2) through a pipeline; the other two outlets are connected with an inlet at the upper part of the reactor (5) through a pipeline and enter the shell side of the reactor (5); the top of the acid settling tank (1) is provided with an outlet () which is connected with an inlet at the bottom of the reactor (5) through a pipeline and enters the tube pass of the reactor (5);
the top of the secondary settling tank (2) is also provided with an outlet; the pipeline is connected with an inlet at the top of the flash tank (4); an outlet is arranged at the bottom of the secondary settling tank (2), and XX acid is discharged through a pipeline;
the top of the flash tank (4) is also provided with an outlet, and the gas phase is sent to a compressor through a pipeline; the bottom of the flash tank (4) is provided with an outlet for feeding the effluent to an effluent pump inlet.
2. A device for recovering hydrocarbons from waste acid generated in alkylation reaction according to claim 1, wherein a pneumatic valve set (3) is arranged on a connecting pipeline between a lower outlet of the acid settling tank (1) and a top inlet of the secondary settling tank (2).
3. A device for recovering hydrocarbons from waste acid generated in alkylation reaction according to claim 1, wherein a pneumatic valve bank (3) is arranged on a connecting pipeline between a top outlet of the secondary settling tank (2) and a top inlet of the flash tank (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920593291.8U CN209815888U (en) | 2019-04-26 | 2019-04-26 | Be arranged in alkylation reaction waste acid hydrocarbon recovery unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920593291.8U CN209815888U (en) | 2019-04-26 | 2019-04-26 | Be arranged in alkylation reaction waste acid hydrocarbon recovery unit |
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| Publication Number | Publication Date |
|---|---|
| CN209815888U true CN209815888U (en) | 2019-12-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920593291.8U Expired - Fee Related CN209815888U (en) | 2019-04-26 | 2019-04-26 | Be arranged in alkylation reaction waste acid hydrocarbon recovery unit |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113321565A (en) * | 2021-07-09 | 2021-08-31 | 山东金诚重油化工技术研究院 | Method for recovering liquid hydrocarbon from alkylation waste acid |
| CN113461520A (en) * | 2020-03-30 | 2021-10-01 | 中石油吉林化工工程有限公司 | Acid water mechanism for MMA production device |
-
2019
- 2019-04-26 CN CN201920593291.8U patent/CN209815888U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113461520A (en) * | 2020-03-30 | 2021-10-01 | 中石油吉林化工工程有限公司 | Acid water mechanism for MMA production device |
| CN113461520B (en) * | 2020-03-30 | 2023-10-17 | 中石油吉林化工工程有限公司 | Acid water mechanism for MMA production device |
| CN113321565A (en) * | 2021-07-09 | 2021-08-31 | 山东金诚重油化工技术研究院 | Method for recovering liquid hydrocarbon from alkylation waste acid |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20191220 Termination date: 20210426 |