CN120229786A - A method for recycling sediment water in a dehydrogenation liquid storage tank - Google Patents
A method for recycling sediment water in a dehydrogenation liquid storage tank Download PDFInfo
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- CN120229786A CN120229786A CN202311847162.4A CN202311847162A CN120229786A CN 120229786 A CN120229786 A CN 120229786A CN 202311847162 A CN202311847162 A CN 202311847162A CN 120229786 A CN120229786 A CN 120229786A
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- water
- oil
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- liquid storage
- dehydrogenation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
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- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Physical Water Treatments (AREA)
Abstract
本发明涉及化工领域，且公开了一种脱氢液储罐沉积水的回收利用的方法，包括系统设计:在脱氢液储罐底部的排水管线接入适当直径和流量能力的管道，将其连接至粗苯乙烯沉降罐罐顶部。本发明所述的一种脱氢液储罐沉积水的回收利用的方法，通过对脱氢液储罐沉积水系统进行改造，改造后可以充分回收水和少部分的物料，含油水可以不必进入污水处理，减少了污水处理的难度，避免了发生环境污染的可能性，而且，增加的管线可以充分回收利用物料，减少了物料的再加工次数，降低了加工成本。The present invention relates to the field of chemical industry, and discloses a method for recycling water deposited in a dehydrogenation liquid storage tank, including system design: a drainage pipeline at the bottom of the dehydrogenation liquid storage tank is connected to a pipe with an appropriate diameter and flow capacity, and the pipe is connected to the top of a crude styrene sedimentation tank. The method for recycling water deposited in a dehydrogenation liquid storage tank described in the present invention can fully recycle water and a small amount of materials by transforming the system of water deposited in the dehydrogenation liquid storage tank, and oily water does not need to enter sewage treatment, which reduces the difficulty of sewage treatment and avoids the possibility of environmental pollution. Moreover, the added pipeline can fully recycle materials, reduce the number of times the materials are reprocessed, and reduce the processing cost.
Description
Technical Field
The invention relates to the field of chemical industry, in particular to a method for recycling deposited water of a dehydrogenation liquid storage tank.
Background
The dehydrogenation liquid storage tank is used for receiving the crude styrene from the crude styrene settling tank, and then sending the crude styrene to the styrene rectification working section for separation, because the crude styrene and the process condensate exist in the crude styrene settling tank at the same time, oil-water separation is carried out on the crude styrene and the process condensate through a natural sedimentation method, the crude styrene enters the dehydrogenation liquid storage tank, the water content is higher, a large amount of water can be accumulated at the bottom of the dehydrogenation liquid storage tank to influence the material metering of the storage tank area, and when the liquid level of the water reaches a certain height, the operation of the whole styrene rectification working section can be influenced after the dehydrogenation liquid is pumped to the rectification working section, so that the dehydrogenation liquid storage tank needs to be subjected to dehydration operation frequently.
However, the existing treatment mode is to treat the sewage with the oily water, so that the difficulty of sewage treatment is improved, and the waste of materials and water resources is caused to a certain extent.
Disclosure of Invention
(One) solving the technical problems
Aiming at the defects of the prior art, the invention provides a method for recycling the deposited water of a dehydrogenation liquid storage tank, which solves the problems.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme that the method for recycling the deposited water of the dehydrogenation liquid storage tank comprises the following steps:
the system design is that a drainage pipeline at the bottom of a dehydrogenation liquid storage tank is connected with a pipeline with proper diameter and flow capacity, and the pipeline is connected to the top of a crude styrene settling tank;
oil-water separation, namely arranging oil-water separation equipment, such as an oil separator and a sedimentation tank, in the crude styrene sedimentation tank, performing high-efficiency oil-water separation, and improving the quality and efficiency of the reclaimed water and materials to the greatest extent by adjusting parameters of the oil-water separation equipment;
The pretreatment of wastewater, namely, arranging solid-liquid separation equipment such as a sedimentation tank or a filter before accumulated water at the bottom enters a crude styrene sedimentation tank, and carrying out preliminary treatment on suspended substances to reduce the content of solid particles in the wastewater;
Material recovery, customizing a material recovery process, and adopting material recovery equipment for further separation and purification according to the characteristics of the waste materials and the properties of target substances;
And the subsequent monitoring is to ensure the operation safety through a leakage control device and an automatic monitoring system, monitor the effects of wastewater recovery and material recovery at regular intervals and evaluate the efficiency of oil-water separation and material recovery through water quality analysis.
Preferably, the oil-water separation device comprises an oil separator and a sedimentation tank.
Preferably, the solid-liquid separation device comprises a sedimentation tank and a filter.
According to another aspect of the embodiment of the invention, a deposited water recovery system of a dehydrogenation liquid storage tank is provided, and comprises the dehydrogenation liquid storage tank, a crude styrene sedimentation tank, a connecting pipeline, an oil-water separation device and a solid-liquid separation device, wherein the dehydrogenation liquid storage tank is used for storing dehydrogenation liquid and bottom accumulated water and providing a container for intensively storing wastewater and materials, the crude styrene sedimentation tank is used for carrying out oil-water separation, the bottom accumulated water and oil are separated through the arrangement of the oil-water separation device, so that oil-water effective separation and recovery are realized, the connecting pipeline is used for connecting the dehydrogenation liquid storage tank and the crude styrene sedimentation tank, and conveying the bottom accumulated water from the storage tank to the sedimentation tank, the oil-water separation device is used for realizing oil-water separation in the bottom accumulated water, separating oil in the wastewater is used for carrying out subsequent treatment and recovery, and the solid-liquid separation device is used for carrying out preliminary solid particle separation treatment on the bottom accumulated water, separating suspended solids in the wastewater, reducing the load of subsequent treatment equipment and improving the efficiency of the system.
Preferably, the oil-water separation device comprises an oil separator, a cyclone and a centrifuge.
Preferably, the solid-liquid separation device comprises a sedimentation tank and a filter.
(III) beneficial effects
Compared with the prior art, the invention provides a method for recycling the deposited water of the dehydrogenation liquid storage tank, which has the following beneficial effects:
According to the method for recycling the deposited water of the dehydrogenation liquid storage tank, the system for recycling the deposited water of the dehydrogenation liquid storage tank is modified, water and a small part of materials can be fully recycled after modification, oil-containing water can not enter sewage treatment, the difficulty of sewage treatment is reduced, the possibility of environmental pollution is avoided, moreover, the added pipeline can fully recycle the materials, the reprocessing times of the materials are reduced, and the processing cost is reduced.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be understood that, in various embodiments of the present invention, the sequence number of each process does not mean that the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.
It should be understood that in the present invention, "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.
The method for recycling the deposited water of the dehydrogenation liquid storage tank comprises the following steps:
the system design is that a drainage pipeline at the bottom of a dehydrogenation liquid storage tank is connected with a pipeline with proper diameter and flow capacity, and the pipeline is connected to the top of a crude styrene settling tank;
oil-water separation, namely arranging oil-water separation equipment, such as an oil separator and a sedimentation tank, in the crude styrene sedimentation tank, performing high-efficiency oil-water separation, and improving the quality and efficiency of the reclaimed water and materials to the greatest extent by adjusting parameters of the oil-water separation equipment;
The pretreatment of wastewater, namely, arranging solid-liquid separation equipment such as a sedimentation tank or a filter before accumulated water at the bottom enters a crude styrene sedimentation tank, and carrying out preliminary treatment on suspended substances to reduce the content of solid particles in the wastewater;
Material recovery, customizing a material recovery process, and adopting material recovery equipment for further separation and purification according to the characteristics of the waste materials and the properties of target substances;
And the subsequent monitoring is to ensure the operation safety through a leakage control device and an automatic monitoring system, monitor the effects of wastewater recovery and material recovery at regular intervals and evaluate the efficiency of oil-water separation and material recovery through water quality analysis.
Wherein the oil-water separation equipment comprises an oil separator and a sedimentation tank, and the solid-liquid separation equipment comprises a sedimentation tank and a filter.
According to another aspect of the embodiment of the invention, a deposited water recovery system of a dehydrogenation liquid storage tank is provided, and comprises the dehydrogenation liquid storage tank, a crude styrene sedimentation tank, a connecting pipeline, an oil-water separation device and a solid-liquid separation device, wherein the dehydrogenation liquid storage tank is used for storing dehydrogenation liquid and bottom accumulated water and providing a container for intensively storing wastewater and materials, the crude styrene sedimentation tank is used for carrying out oil-water separation, the bottom accumulated water and oil are separated through the oil-water separation device, so that oil-water effective separation and recovery are realized, the connecting pipeline is used for connecting the dehydrogenation liquid storage tank and the crude styrene sedimentation tank, and transmitting the bottom accumulated water from the storage tank to the sedimentation tank, the oil-water separation device is used for realizing oil-water separation in the bottom accumulated water, separating oil in wastewater for subsequent treatment and recovery, the solid-liquid separation device is used for carrying out primary solid particle separation treatment on the bottom accumulated water, and separating suspended solids in the wastewater, so that the load of subsequent treatment equipment is reduced, and the efficiency of the system is improved.
Wherein the oil-water separation equipment comprises an oil separator, a cyclone and a centrifuge, and the solid-liquid separation equipment comprises a sedimentation tank and a filter.
Although embodiments of the present invention 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 principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The method for recycling the deposited water of the dehydrogenation liquid storage tank is characterized by comprising the following steps of:
the system design is that a drainage pipeline at the bottom of a dehydrogenation liquid storage tank is connected with a pipeline with proper diameter and flow capacity, and the pipeline is connected to the top of a crude styrene settling tank;
oil-water separation, namely arranging oil-water separation equipment, such as an oil separator and a sedimentation tank, in the crude styrene sedimentation tank, performing high-efficiency oil-water separation, and improving the quality and efficiency of the reclaimed water and materials to the greatest extent by adjusting parameters of the oil-water separation equipment;
The pretreatment of wastewater, namely, arranging solid-liquid separation equipment such as a sedimentation tank or a filter before accumulated water at the bottom enters a crude styrene sedimentation tank, and carrying out preliminary treatment on suspended substances to reduce the content of solid particles in the wastewater;
Material recovery, customizing a material recovery process, and adopting material recovery equipment for further separation and purification according to the characteristics of the waste materials and the properties of target substances;
And the subsequent monitoring is to ensure the operation safety through a leakage control device and an automatic monitoring system, monitor the effects of wastewater recovery and material recovery at regular intervals and evaluate the efficiency of oil-water separation and material recovery through water quality analysis.
2. The method for recycling settled water in a dehydrogenation liquid storage tank according to claim 1, wherein the oil-water separation device comprises an oil separator and a settling tank.
3. The method for recycling of settled water in a dehydrogenation liquid storage tank according to claim 1, characterized in that the solid-liquid separation device comprises a settling tank and a filter.
4. The deposited water recovery system of the dehydrogenation liquid storage tank comprises the dehydrogenation liquid storage tank, a crude styrene sedimentation tank, a connecting pipeline, an oil-water separation device and a solid-liquid separation device, and is characterized in that the dehydrogenation liquid storage tank is used for storing dehydrogenation liquid and bottom accumulated water and providing a container for intensively storing wastewater and materials, the crude styrene sedimentation tank is used for carrying out oil-water separation, the bottom accumulated water and oil are separated through the arrangement of the oil-water separation device, so that oil-water effective separation and recovery are achieved, the connecting pipeline is used for connecting the dehydrogenation liquid storage tank and the crude styrene sedimentation tank, and conveying the bottom accumulated water from the storage tank to the sedimentation tank, the oil-water separation device is used for achieving separation of oil and water in the bottom accumulated water, oil in the wastewater is separated out for subsequent treatment and recovery, and the solid-liquid separation device is used for carrying out primary solid particle separation treatment on the bottom accumulated water, separating suspended solids in the wastewater out load reduction of subsequent treatment equipment, and efficiency improvement of the system.
5. The system for recovering sedimented water from a dehydrogenation liquid storage tank according to claim 4, wherein said oil-water separation device comprises an oil separator, a cyclone, and a centrifuge.
6. The dehydrogenation liquid storage tank sedimented water recovery system of claim 4, wherein said solid-liquid separation device comprises a sedimentation tank, a filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311847162.4A CN120229786A (en) | 2023-12-29 | 2023-12-29 | A method for recycling sediment water in a dehydrogenation liquid storage tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311847162.4A CN120229786A (en) | 2023-12-29 | 2023-12-29 | A method for recycling sediment water in a dehydrogenation liquid storage tank |
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| Publication Number | Publication Date |
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| CN120229786A true CN120229786A (en) | 2025-07-01 |
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| CN202311847162.4A Pending CN120229786A (en) | 2023-12-29 | 2023-12-29 | A method for recycling sediment water in a dehydrogenation liquid storage tank |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005145880A (en) * | 2003-11-14 | 2005-06-09 | Mitsubishi Chemicals Corp | Method and apparatus for producing vinyl aromatic compound |
| CN108276237A (en) * | 2017-12-29 | 2018-07-13 | 山东晟原石化科技有限公司 | A kind of process for cleanly preparing of oil refinery dry gas preparation of styrene |
| CN212532574U (en) * | 2020-03-25 | 2021-02-12 | 陕西奥泰盛环保科技有限公司 | An oil-water separation micro-electrolysis device |
| CN216653974U (en) * | 2022-01-13 | 2022-06-03 | 淄博峻辰新材料科技有限公司 | Styrene noncondensable gas recovery system |
| CN219579931U (en) * | 2023-03-31 | 2023-08-25 | 东明中信国安瑞华新材料有限公司 | Oil phase device is retrieved in dehydrogenation fluid reservoir drainage |
-
2023
- 2023-12-29 CN CN202311847162.4A patent/CN120229786A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005145880A (en) * | 2003-11-14 | 2005-06-09 | Mitsubishi Chemicals Corp | Method and apparatus for producing vinyl aromatic compound |
| CN108276237A (en) * | 2017-12-29 | 2018-07-13 | 山东晟原石化科技有限公司 | A kind of process for cleanly preparing of oil refinery dry gas preparation of styrene |
| CN212532574U (en) * | 2020-03-25 | 2021-02-12 | 陕西奥泰盛环保科技有限公司 | An oil-water separation micro-electrolysis device |
| CN216653974U (en) * | 2022-01-13 | 2022-06-03 | 淄博峻辰新材料科技有限公司 | Styrene noncondensable gas recovery system |
| CN219579931U (en) * | 2023-03-31 | 2023-08-25 | 东明中信国安瑞华新材料有限公司 | Oil phase device is retrieved in dehydrogenation fluid reservoir drainage |
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