CN217568694U - Equipment for producing crude phenol by decomposing sodium phenolate with sulfuric acid - Google Patents
Equipment for producing crude phenol by decomposing sodium phenolate with sulfuric acid Download PDFInfo
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- CN217568694U CN217568694U CN202121385860.3U CN202121385860U CN217568694U CN 217568694 U CN217568694 U CN 217568694U CN 202121385860 U CN202121385860 U CN 202121385860U CN 217568694 U CN217568694 U CN 217568694U
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Abstract
The equipment for producing crude phenol by decomposing sodium phenolate with sulfuric acid is characterized by comprising a feeding pre-mixing system and a pre-reaction system which are sequentially connected through a pipeline, and further comprising a multi-stage decomposition and discharge system, wherein the multi-stage decomposition and discharge system is connected to the rear part of the pre-reaction system through a pipeline. The utility model discloses a plurality of decomposition towers in well prereactor and multistage decomposition and discharge system are reaction vessel, and mix in order to carry out further reaction through adding sulphuric acid many times and the material that has not reacted, can let thick sodium phenolate fully take place the reaction with sulphuric acid, have solved continuous sulphuric acid decomposition technology because mix inhomogeneous product decomposition incomplete problem that leads to, can provide reliable raw materials for the crude phenol refining production of low reaches, also reduce the processing load for subsequent phenol-containing waste water treatment simultaneously.
Description
Technical Field
The utility model belongs to coal coking production field especially relates to an equipment of sulphuric acid decomposition phenol sodium salt production crude phenol.
Background
As for the decomposition process of the sodium phenolate, a sulfuric acid decomposition process and a carbon dioxide decomposition process are generally used at present. In general, the continuous sulfuric acid decomposition process of sodium phenolate is mainly characterized by that dilute sulfuric acid and sodium phenolate are passed through pipeline mixer and fed into decomposition sulfuric acid decomposition tank or decomposition tower, then the separated crude phenol is washed by water and fed into crude phenol tank so as to implement decomposition process. However, in the actual production process using the continuous sulfuric acid decomposition process, the phenomenon of uneven mixing can occur, so that the decomposition of the crude phenol product is incomplete, the subsequent refining and separation of the crude phenol are difficult, and the final product is not qualified.
Disclosure of Invention
The utility model aims to provide an equipment of sulphuric acid decomposition phenol sodium salt production crude carbolic acid to solve the incomplete technical problem of crude carbolic acid product decomposition.
In order to solve the technical problem, the utility model provides an equipment of sulphuric acid decomposition phenol sodium salt production crude phenol, concrete technical scheme is as follows:
the equipment for producing crude phenol by decomposing sodium phenolate with sulfuric acid comprises a feeding pre-mixing system and a pre-reaction system which are sequentially connected through a pipeline, and is characterized by further comprising a multi-stage decomposition and discharge system, wherein the multi-stage decomposition and discharge system is connected to the rear part of the pre-reaction system through a pipeline.
The multi-stage decomposition and discharge system comprises more than two stages of decomposition devices and discharge devices which are connected in series, wherein the decomposition devices at all stages are connected by heat tracing pipelines, and the decomposition devices at all stages and the discharge devices are connected by heat tracing pipelines.
The feeding premixing system comprises a pure sodium phenolate buffer tank, a pure sodium phenolate discharge pump and a first pipeline mixer which are sequentially connected, and an inlet of the first pipeline mixer is simultaneously connected with the sulfuric acid feeding device.
The pre-reaction system comprises a pre-reactor and a pre-reactor discharging pump which are sequentially connected, and the rear part of the pre-reactor discharging pump is connected with a multi-stage decomposition and discharging system.
The multistage decomposition and discharge system comprises a plurality of decomposition towers which are connected in sequence, wherein the upper part of each decomposition tower is provided with a crude phenol discharge port, and each crude phenol discharge port is connected with a crude phenol buffer tank through a pipeline; the middle part of each decomposition tower is provided with a feed inlet, and the outlet of the discharging pump of the pre-reactor is connected with the feed inlet of the first decomposition tower through a pipeline; a material discharge port is arranged at the bottom of each decomposition tower and is respectively connected with a decomposition tower discharge pump; and a pipeline mixer is arranged on a connecting pipeline between every two decomposition towers, the outlet of the discharge pump of each decomposition tower is connected with the inlet of the pipeline mixer, and the inlet of the pipeline mixer is simultaneously connected with a sulfuric acid feeding device and used for mixing the reaction residual materials at the bottom of each decomposition tower with sulfuric acid again for further reaction. The outlet of each pipeline mixer is connected with the feed inlet of the next decomposition tower.
And the discharge pump of the last decomposition tower is connected with a sodium salt wastewater tank, and the sodium salt wastewater tank is used for temporarily storing the fully reacted sodium salt wastewater.
Furthermore, the crude phenol discharge port at the upper part of each decomposition tower is connected with the crude phenol buffer tank through a heat tracing pipeline.
Furthermore, the material outlet at the bottom of each decomposition tower is connected with the material inlet of the next decomposition tower through a heat tracing pipeline.
The heat tracing pipeline can prevent the crude phenol and sodium sulfate as reaction products from crystallizing to influence the smoothness of the pipeline when materials are conveyed in the pipeline, and can ensure the temperature of the reaction in each decomposition tower.
Furthermore, the multistage decomposition system comprises two decomposition towers which are connected in sequence, and a pipeline mixer is arranged on a pipeline between the two decomposition towers.
The invention also provides a method for producing crude phenol by using the equipment, which comprises the following specific steps:
step one, premixing phenolic sodium salt and dilute sulfuric acid through a feeding premixing system;
secondly, feeding the premixed reaction materials fed into the pre-reaction system, and fully mixing the premixed reaction materials by stirring to generate pre-reaction;
feeding the material subjected to the pre-reaction in the pre-reaction system into a decomposition device for decomposition reaction, and feeding the crude phenol obtained by the reaction into a discharging device;
and step four, discharging the completely reacted materials at the bottom of the last-stage decomposition device.
Further, the process for producing crude phenol comprises
Step one, premixing phenolic sodium salt and dilute sulfuric acid through a feeding premixing system;
secondly, feeding the premixed reaction materials passing through the feeding premixing system into a pre-reaction system, and stirring and fully mixing the premixed reaction materials to generate pre-reaction;
feeding the material subjected to the pre-reaction in the pre-reaction system into a first-stage decomposition device for decomposition reaction, and feeding the crude phenol obtained by the reaction into a discharging device;
step four, pre-mixing incompletely reacted materials in the first-stage decomposition device with dilute sulfuric acid for the second time, feeding the pre-mixed materials into a second-stage decomposition device for decomposition reaction, and feeding crude phenol obtained by the reaction into a discharging device;
and fifthly, discharging the materials which are completely reacted at the bottom of the second-stage decomposition device.
Further, in the above method for producing crude phenol, the pre-reactor, the first decomposition tower and the second decomposition tower respectively produce about 30%, 50% and 20% of the total amount of crude phenol.
The utility model discloses an equipment and method for sulfuric acid decomposition phenol sodium salt production crude phenol has following advantage:
1. the sulfuric acid is added for a plurality of times and mixed with unreacted materials for further reaction, so that the sodium phenolate is fully reacted to generate crude phenol, the reaction yield is improved, reliable raw materials can be provided for downstream crude phenol refining production, and the treatment load is reduced for subsequent treatment of phenol-containing wastewater.
2. The pre-reactor and each decomposing tower are the places for reaction, so that a special reactor is omitted, and the reaction efficiency is improved.
3. The pipelines for connecting the decomposing towers are heat tracing pipelines, so that the temperature reduction in the material conveying process can be prevented, crude phenol and sodium sulfate as reaction products are crystallized to influence the smoothness of the pipelines, and meanwhile, the reaction temperature in each decomposing tower can be ensured.
Drawings
FIG. 1 is a schematic diagram of an apparatus for producing crude phenol by decomposing a sodium phenolate salt with sulfuric acid according to the present invention;
the notation in the figure is: 1. a clean sodium phenolate buffer tank; 2. a clean sodium phenolate discharge pump; 3. a first line mixer; 4. a pre-reactor; 5. a pre-reactor discharge pump; 6. a first decomposition column; 7. a discharge pump of the decomposing tower; 8. a second line mixer; 9. a second decomposition column; 10. a decomposing tower discharge pump; 11. a sodium salt wastewater tank; 12. a crude phenol buffer tank; 13. a sulfuric acid feed device; 14. a sulfuric acid feed device; 15. a heat tracing pipeline; 16. heat tracing pipeline
Detailed Description
It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings, which are merely for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the invention, the meaning of "a plurality" is two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified 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 the creation of the present invention can be understood by those of ordinary skill in the art through specific situations.
The invention will be described in detail below with reference to the drawings and embodiments.
As shown in figure 1, the equipment for producing crude phenol by decomposing sodium phenolate with sulfuric acid comprises a feeding premixing system, a pre-reaction system and a multi-stage decomposition and discharging system which are sequentially connected.
The feeding premixing system comprises a pure sodium phenolate buffer tank 1, a pure sodium phenolate discharge pump 2 and a first pipeline mixer 3 which are sequentially connected, and an inlet of the first pipeline mixer is simultaneously connected with a sulfuric acid feeding device 13.
The pre-reaction system comprises a pre-reactor 4 and a pre-reactor discharge pump 5 which are connected in sequence, and the rear part of the pre-reactor discharge pump 5 is connected with a multi-stage decomposition and discharge system.
The multi-stage decomposition and discharge system comprises a first decomposition tower 6 and a second decomposition tower 9 which are sequentially connected, wherein the upper part of each decomposition tower is provided with a crude phenol discharge port, and each crude phenol discharge port is connected with a crude phenol buffer tank 12 through a pipeline; the middle part of each decomposition tower is provided with a feed inlet, and the outlet of the pre-reactor discharge pump 5 is connected with the feed inlet of the first decomposition tower through a pipeline; the bottoms of the two decomposition towers are provided with material discharge ports which are respectively connected with decomposition tower discharge pumps 7 and 10; and a second pipeline mixer is arranged on a connecting pipeline between the two decomposition towers, the outlet of the discharge pump of the first decomposition tower is connected with the inlet of the second pipeline mixer, and the inlet of the second pipeline mixer is simultaneously connected with a sulfuric acid feeding device 14 and used for mixing the reaction residual materials at the bottom of each decomposition tower with sulfuric acid again for further reaction. The outlet of the second pipeline mixer is connected with the feed inlet of the second decomposition tower.
The discharging pump 10 of the decomposing tower is connected with a sodium salt wastewater tank 11, and the sodium salt wastewater tank 11 is used for temporarily storing the sodium salt wastewater after full reaction.
In the multi-stage decomposition and discharge system, a heat tracing pipeline 15 is arranged between the crude phenol discharge ports at the upper parts of the first decomposition tower and the second decomposition tower and the crude phenol buffer tank 12.
In the multi-stage decomposition and discharge system, the connecting pipeline between the material discharge port at the bottom of the first decomposition tower and the material inlet port of the second decomposition tower is a heat tracing pipeline 16.
The method for producing the crude phenol by using the equipment comprises the following specific steps:
respectively pumping the sodium phenolate solution and dilute sulfuric acid to a first pipeline mixer for premixing;
the reaction materials premixed by the first pipeline mixer 3 are pumped into the pre-reactor 4, the stirrer is started, and the materials are fully mixed for reaction;
the material after the pre-reaction in the pre-reactor 4 is sent into a first decomposition tower 6 for decomposition reaction through a pre-reactor discharge pump 5, and the reacted crude phenol is sent into a crude phenol buffer tank 12 through a discharge hole at the upper part of the first decomposition tower 6 in a self-flowing mode;
discharging incompletely reacted materials in the first decomposition tower 6 from a material discharge port at the bottom of the first decomposition tower 6, and respectively pumping the incompletely reacted materials and dilute sulfuric acid to a pipeline mixer 8 for secondary premixing;
the reaction materials premixed for the second time by the pipeline mixer 8 are sent into the second decomposition tower 9 by a pump for decomposition reaction, and the reacted crude phenol is sent into a crude phenol buffer tank 12 by a self-flowing mode through a discharge port at the upper part of the second decomposition tower 9;
the material at the bottom of the second decomposition tower 9 is discharged into a sodium salt wastewater tank 11 through a pump.
In the process of producing the crude phenol by using the method, the pre-reactor, the first decomposition tower and the second decomposition tower respectively produce about 30 percent, 50 percent and 20 percent of the total amount of the crude phenol.
The invention adds a pre-reactor, the pre-reactor and a plurality of decomposition towers in the multi-stage decomposition and discharge system are reaction containers, the sodium phenolate and the sulfuric acid can fully react to generate the crude phenol, the problem of incomplete product decomposition caused by uneven mixing in the continuous sulfuric acid decomposition process is solved, reliable raw materials can be provided for downstream crude phenol refining production, and the treatment load is reduced for subsequent phenol-containing wastewater treatment.
It is to be understood that the present invention has been described with reference to the embodiments, and those skilled in the art will recognize that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (9)
1. The utility model provides an equipment of sulphuric acid decomposition phenol sodium salt production crude phenol, include the feeding pre-mixing system and the pre-reaction system that connect gradually through the pipeline, its characterized in that still includes multistage decomposition and discharge system, multistage decomposition and discharge system pass through the tube coupling at pre-reaction system rear portion, multistage decomposition and discharge system include the decomposition device and the discharging device of the series connection each other more than the two-stage, by heat tracing pipe coupling between the decomposition device at different levels, by heat tracing pipe coupling between decomposition device at different levels and the discharging device.
2. The equipment for producing the crude phenol by decomposing the sodium phenolate with the sulfuric acid according to the claim 1 is characterized in that a feeding premixing system comprises a pure sodium phenolate buffer tank (1), a pure sodium phenolate discharge pump (2) and a first pipeline mixer (3) which are connected in sequence, the pre-reaction system comprises a pre-reactor (4) and a pre-reactor discharge pump (5) which are connected in sequence, a decomposing device comprises a plurality of decomposing towers (6,9) which are connected in sequence, a pipeline mixer (8) is arranged on a connecting pipeline between every two decomposing towers, and the inlet of the pipeline mixer (8) is connected with a sulfuric acid feeding device (14) and is used for further reacting the reaction residual materials at the bottom of each decomposing tower and the sulfuric acid after being mixed again.
3. The apparatus for producing crude phenol by sulfuric acid decomposition of sodium phenolate according to claim 2, wherein the discharge means is a crude phenol surge tank (12).
4. The apparatus for producing crude phenol by decomposing sodium phenolate with sulfuric acid according to claim 2, wherein a material outlet is provided at the bottom of each decomposition tower, the material outlets are respectively connected with a decomposition tower discharge pump (7,10), and the outlet of each decomposition tower discharge pump (7,10) is connected with the inlet of the pipeline mixer (8).
5. The apparatus for producing crude phenol by decomposing sodium phenolate with sulfuric acid according to claim 4, wherein the middle parts of a plurality of decomposing towers (6,9) are provided with feed inlets, and the outlet of the pre-reactor discharging pump (5) is connected with the feed inlet of the first decomposing tower (6) through a pipeline; the upper parts of the plurality of decomposing towers (6,9) are provided with crude phenol discharge ports, and each crude phenol discharge port is connected with a crude phenol buffer tank (12) through a pipeline; the last discharging pump (10) of the decomposing tower is connected with a sodium salt waste water tank (11).
6. The apparatus for producing crude phenol by sulfuric acid decomposition of sodium phenolate according to claim 5, wherein the crude phenol discharge port at the upper part of each decomposition tower (6,9) is connected to the crude phenol buffer tank (12) by means of an heat tracing pipeline (15).
7. The apparatus for producing crude phenol by decomposing sodium phenolate with sulfuric acid according to claim 5, wherein the material outlet at the bottom of each decomposition column is connected to the material inlet of the next decomposition column via a heat-tracing pipe (15).
8. The apparatus for producing crude phenol by sulfuric acid decomposition of sodium phenolate according to claim 5, comprising two decomposition towers, and a pipeline mixer (8) is provided on a connecting pipeline between the two decomposition towers.
9. The apparatus for producing crude phenol by sodium salt of phenol with sulfuric acid decomposition according to claim 8, wherein the pre-reactor (4), the first decomposition tower (6) and the second decomposition tower (9) respectively produce crude phenol in an amount of about 30%, 50% and 20% of the total amount.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121385860.3U CN217568694U (en) | 2021-06-21 | 2021-06-21 | Equipment for producing crude phenol by decomposing sodium phenolate with sulfuric acid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121385860.3U CN217568694U (en) | 2021-06-21 | 2021-06-21 | Equipment for producing crude phenol by decomposing sodium phenolate with sulfuric acid |
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| CN217568694U true CN217568694U (en) | 2022-10-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644141A (en) * | 2020-05-11 | 2020-09-11 | 山东泰东环保科技股份有限公司 | Stirring device for preparing crude phenol by sodium phenolate sulfuric acid acidification method and use method thereof |
| CN113351139A (en) * | 2021-06-21 | 2021-09-07 | 天津辰力工程设计有限公司 | Equipment and method for producing crude phenol by decomposing sodium phenolate with sulfuric acid |
-
2021
- 2021-06-21 CN CN202121385860.3U patent/CN217568694U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111644141A (en) * | 2020-05-11 | 2020-09-11 | 山东泰东环保科技股份有限公司 | Stirring device for preparing crude phenol by sodium phenolate sulfuric acid acidification method and use method thereof |
| CN113351139A (en) * | 2021-06-21 | 2021-09-07 | 天津辰力工程设计有限公司 | Equipment and method for producing crude phenol by decomposing sodium phenolate with sulfuric acid |
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