CN203652421U - Process system for storage of acrylic acid - Google Patents
Process system for storage of acrylic acid Download PDFInfo
- Publication number
- CN203652421U CN203652421U CN201320812134.4U CN201320812134U CN203652421U CN 203652421 U CN203652421 U CN 203652421U CN 201320812134 U CN201320812134 U CN 201320812134U CN 203652421 U CN203652421 U CN 203652421U
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- Prior art keywords
- acrylic acid
- floating roof
- tank
- internal floating
- process system
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Abstract
The utility model relates to the technical field of fine chemical engineering, in particular to an acrylic acid storage system and provides a process system for the storage of acrylic acid. The process system comprises a storage tank used for the storage of acrylic acid, wherein the storage tank is an inner floating roof storage tank, a feeding port of the inner floating roof storage tank is connected with a feeding pump, and a discharging port of the inner floating roof storage tank is connected with a discharging pump. An inner coiler is arranged in the inner floating roof storage tank. The inner coiler is connected with an external heat exchange loop. According to the technical scheme, the process system is simple in structure, easy to obtain and capable of effectively guaranteeing the storage of acrylic acid.
Description
Technical field
The utility model relates to fine chemical technology field, is specifically related to a kind of acrylic acid memory system.
Background technology
In organic acid, strong acid during acrylic acid belongs to, in solution, there is more free radical CH2--CHCOO-and H+, adding the unsaturated double-bond self having, self-crosslinking polymerization is just easy to occur, and free radical brings out unsaturated double-bond (C=C) and disconnects, and carries out vinyl-type polymerization, polymerization is exothermal reaction, adds fast response along with the rising of temperature.If do not controlled, the polymeric level is increasing, finally generates the poly-mer of insoluble high polymerization degree.During acrylic acid application high speed development, because the overheated explosive industrial hazard event that produces polymerization initiation occurs repeatedly, this is all owing to causing improper even out of control the causing of temperature control to acrylic acid storage design is inconsiderate, also has due to suitable oxygen intake (storage tank respiratory system malfunctioning) or the accident that adopts polymerization inhibitor improperly etc. to cause.
Utility model content
The purpose of this utility model is, a kind of process system storing for acrylic acid is provided, and solves above technical matters.
The technical matters that the utility model solves can realize by the following technical solutions:
A kind of process system storing for acrylic acid, comprise that one for storing acrylic acid storage tank, it is characterized in that, described storage tank adopts internal floating roof tank, the inlet point of described internal floating roof tank connects a feed pump, and the discharging opening of described internal floating roof tank connects a discharging pump;
In described internal floating roof tank, be provided with inner coil pipe, described inner coil pipe connects external heat-exchanging loop.
Acrylic acid material enters into internal floating roof tank by feed pump and stores, and is transported to user by discharging pump.Because the preference temperature that acrylic acid stores is spent in 15 degree～30, therefore the utility model has been set up inner coil pipe in internal floating roof tank, by external heat-exchanging loop, regulate the temperature of internal floating roof tank inner propene acid, ensure that acrylic acid is all the time in stable range of temperatures.
The top of described internal floating roof tank is provided with drain.Acrylic acid material storing pressure is normal pressure, and internal floating roof tank carries drain, and make in the tank of internal floating roof tank is normal pressure under nominal situation, ensures that this system can superpressure.
The utility model, in acrylic acid storage process, adds acrylic acid polymerization inhibitor in tank, and polymerization inhibitor comprises hydroquinones (HQ), hydroquinone monomethyl ether (MQ), phenothiazine (PZ) etc.
The tank bottom sheet of described internal floating roof tank logical one pipeline that purifies air, described in the pipeline that purifies air be provided with back pressure type from force regulating valve.The utility model is passed at the bottom of by tank and is purified air by the pipeline that purifies air in acrylic acid stores, and for polymerization inhibitor in tank provides oxygen, ensures the activity of polymerization inhibitor.Back pressure type can ensure to pass into air under suitable pressure condition from force regulating valve.
Described external heat-exchanging loop comprises two groups, and one group is chilled water circuit, and one group is hot-water return;
The water inlet of described inner coil pipe connects respectively the outlet pipeline of described chilled water circuit, the outlet pipeline of described hot-water return; The water outlet of described inner coil pipe connects respectively the suction culvert of described chilled water circuit, the suction culvert of described hot-water return.After above-mentioned design, inner coil pipe is according to outer work condition in acrylic acid storage process, or to pass into hot water be acrylic acid heat supply, or to pass into chilled water be that acrylic acid is cooling, to ensure acrylic acid suitable storage temperature.
The tank skin of described internal floating roof tank is provided with the teletransmission heat indicator for detection of temperature;
On the outlet pipeline of described chilled water circuit, the outlet pipeline of described hot-water return, be respectively equipped with control cock, described teletransmission heat indicator is interlocked with two described control cocks respectively.When temperature is higher than predetermined value or lower than predetermined value in tank, change the temperature in storage tank by the upper water yield that regulates chilled water and hot water.
Described internal floating roof tank peripheral hardware is useful on the far transmission level meter that detects material liquid level in tank; Described far transmission level meter and described feed pump, described discharging pump are interlocked respectively.In tank, liquid level exceeds predetermined value and closes acrylic acid feed pump, closes acrylic acid discharging pump when lower than predetermined value, to ensure that feed pump and discharging pump can not dally, ensures the safety of pump.
Beneficial effect: owing to adopting technique scheme, the utility model is simple in structure, easily realization, and can effectively ensure acrylic acid storage.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Detailed description of the invention
For technological means, creation characteristic that the utility model is realized, reach object and effect is easy to understand, below in conjunction with further elaboration the utility model of concrete diagram.
With reference to Fig. 1, a kind of process system storing for acrylic acid, comprises the feed pump 1, internal floating roof tank 3, the discharging pump 5 that connect successively.The top of internal floating roof tank 3 is provided with drain 12.In internal floating roof tank 3, be provided with inner coil pipe 2, inner coil pipe 2 connects external heat-exchanging loop.The logical pipeline 13 that purifies air of tank bottom sheet of internal floating roof tank 3, the pipeline 13 that purifies air is provided with back pressure type from force regulating valve 4.
External heat-exchanging loop comprises two groups, and one group is chilled water circuit, and one group is hot-water return.The water inlet of inner coil pipe 2 connects respectively the outlet pipeline 8 of chilled water circuit, the outlet pipeline 10 of hot-water return.The water outlet of inner coil pipe 2 connects respectively the suction culvert 9 of chilled water circuit, the suction culvert 11 of hot-water return.
The tank skin of internal floating roof tank 3 is provided with the teletransmission heat indicator 6 for detection of temperature.On the outlet pipeline 8 of chilled water circuit, the outlet pipeline 10 of hot-water return, be respectively equipped with control cock, teletransmission heat indicator 6 is interlocked with two control cocks respectively.
Internal floating roof tank 3 peripheral hardwares are useful on the far transmission level meter 7 that detects material liquid level in tank.Far transmission level meter 7 is interlocked respectively with feed pump 1, discharging pump 5.
Working process of the present utility model is as follows: the internal floating roof tank 3 that acrylic acid material enters into by feed pump 1 stores, and is transported to user by discharging pump 5.The preference temperature that acrylic acid stores is spent in 15 degree～30, and in storage process, adds polymerization inhibitor, as hydroquinones (HQ), hydroquinone monomethyl ether (MQ), phenothiazine (PZ) etc.In the winter time, the hot water of 60 degree～80 degree enters into inner coil pipe 2 by the outlet pipeline 10 of hot-water return, and for the acrylic acid in internal floating roof tank 3 provides heat, the hot water after heat exchange is got back to recycling in hot-water heating system by the suction culvert 11 of hot-water return.In summer, the chilled water of 5 degree～10 degree enters into inner coil pipe 2 by the outlet pipeline 8 of chilled water circuit, for the acrylic acid in internal floating roof tank 3 provides cold, the chilled water after heat exchange is got back to recycling in chilled water system by the suction culvert 9 of chilled water circuit.Purify air and enter into internal floating roof tank 3 by the pipeline 13 that purifies air, for oxygen is provided in storage tank, to ensure the activity of acrylic acid polymerization inhibitor.
The utility model process safety realizes by following scheme:
1) purify air on pipeline 13 with back pressure type from force regulating valve 4, can just overcome the pressure of fluid column in storage tank to ensure to enter into the pressure purifying air of internal floating roof tank 3, make the air can be in bubbling state in storage medium;
2) simultaneously, internal floating roof tank 3 carries drain 12, and make in the tank of internal floating roof tank 3 is normal pressure under nominal situation, ensures that this system can superpressure;
3) internal floating roof tank 3 is with teletransmission heat indicator 6, control cock on this teletransmission heat indicator 6 and inner coil pipe 2 outlet pipelines carries out respectively chain, when temperature is higher than predetermined value or lower than predetermined value in tank, changes the temperature in storage tank by the upper water yield that regulates chilled water and hot water;
4) internal floating roof tank 3 is with far transmission level meter 7, it is chain that this far transmission level meter 7 and acrylic acid feed pump 1 and discharging pump 5 carry out, and in tank, liquid level exceeds predetermined value and closes acrylic acid feed pump 1, closes acrylic acid discharging pump 5 when lower than predetermined value, to ensure that pump can not dally, ensure the safety of pump.
More than show and described groundwork of the present utility model and principal character and advantage of the present utility model.The technical personnel of the industry should be understood; the utility model is not restricted to the described embodiments; that in above-described embodiment and specification sheets, describes just illustrates principle of the present utility model; do not departing under the prerequisite of the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (6)
1. the process system storing for acrylic acid, comprise that one for storing acrylic acid storage tank, it is characterized in that, described storage tank adopts internal floating roof tank, the inlet point of described internal floating roof tank connects a feed pump, and the discharging opening of described internal floating roof tank connects a discharging pump;
In described internal floating roof tank, be provided with inner coil pipe, described inner coil pipe connects external heat-exchanging loop.
2. a kind of process system storing for acrylic acid according to claim 1, is characterized in that, the top of described internal floating roof tank is provided with drain.
3. a kind of process system storing for acrylic acid according to claim 1 and 2, is characterized in that, the tank bottom sheet of a described internal floating roof tank logical pipeline that purifies air, described in the pipeline that purifies air be provided with back pressure type from force regulating valve.
4. a kind of process system storing for acrylic acid according to claim 3, is characterized in that, described external heat-exchanging loop comprises two groups, and one group is chilled water circuit, and one group is hot-water return;
The water inlet of described inner coil pipe connects respectively the outlet pipeline of described chilled water circuit, the outlet pipeline of described hot-water return; The water outlet of described inner coil pipe connects respectively the suction culvert of described chilled water circuit, the suction culvert of described hot-water return.
5. a kind of process system storing for acrylic acid according to claim 4, is characterized in that, the tank skin of described internal floating roof tank is provided with the teletransmission heat indicator for detection of temperature;
On the outlet pipeline of described chilled water circuit, the outlet pipeline of described hot-water return, be respectively equipped with control cock, described teletransmission heat indicator is interlocked with two described control cocks respectively.
6. a kind of process system storing for acrylic acid according to claim 5, is characterized in that, described internal floating roof tank peripheral hardware is useful on the far transmission level meter that detects material liquid level in tank; Described far transmission level meter and described feed pump, described discharging pump are interlocked respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320812134.4U CN203652421U (en) | 2013-12-10 | 2013-12-10 | Process system for storage of acrylic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320812134.4U CN203652421U (en) | 2013-12-10 | 2013-12-10 | Process system for storage of acrylic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203652421U true CN203652421U (en) | 2014-06-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320812134.4U Expired - Fee Related CN203652421U (en) | 2013-12-10 | 2013-12-10 | Process system for storage of acrylic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203652421U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429079A (en) * | 2016-08-30 | 2017-02-22 | 爱森（中国）絮凝剂有限公司 | Automatic explosion-proof acrylic acid storage tank |
| CN110482041A (en) * | 2019-08-08 | 2019-11-22 | 江苏丽天石化码头有限公司 | The safe storage arrangement of acrylic acid and its spin-off |
| CN110619965A (en) * | 2019-03-28 | 2019-12-27 | 广西防城港核电有限公司 | Floating roof type diaphragm structure, detection method thereof and liquid level calibration method of backpressure water |
| CN113173347A (en) * | 2021-05-11 | 2021-07-27 | 华亭煤业集团有限责任公司 | Process method for prolonging service life of floating roof in storage tank |
-
2013
- 2013-12-10 CN CN201320812134.4U patent/CN203652421U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429079A (en) * | 2016-08-30 | 2017-02-22 | 爱森（中国）絮凝剂有限公司 | Automatic explosion-proof acrylic acid storage tank |
| CN106429079B (en) * | 2016-08-30 | 2018-07-24 | 爱森（中国）絮凝剂有限公司 | A kind of automatic burst-preventing propylene acid storage tank |
| CN110619965A (en) * | 2019-03-28 | 2019-12-27 | 广西防城港核电有限公司 | Floating roof type diaphragm structure, detection method thereof and liquid level calibration method of backpressure water |
| CN110619965B (en) * | 2019-03-28 | 2022-02-25 | 广西防城港核电有限公司 | Detection method of floating-roof type diaphragm structure |
| CN110482041A (en) * | 2019-08-08 | 2019-11-22 | 江苏丽天石化码头有限公司 | The safe storage arrangement of acrylic acid and its spin-off |
| CN113173347A (en) * | 2021-05-11 | 2021-07-27 | 华亭煤业集团有限责任公司 | Process method for prolonging service life of floating roof in storage tank |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20140618 Termination date: 20201210 |