CN216172338U - 1, 2-diazoxynaphthalene-4-sulfonic acid continuous nitration reaction device - Google Patents
1, 2-diazoxynaphthalene-4-sulfonic acid continuous nitration reaction device Download PDFInfo
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- CN216172338U CN216172338U CN202122712935.0U CN202122712935U CN216172338U CN 216172338 U CN216172338 U CN 216172338U CN 202122712935 U CN202122712935 U CN 202122712935U CN 216172338 U CN216172338 U CN 216172338U
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Abstract
The utility model provides a 1, 2-diazoxynaphthalene-4-sulfonic acid continuous nitration reaction device, which comprises a storage device, a feeding device, a continuous nitration reaction device and a pipeline temperature control and detection device, wherein the storage device comprises a pulping kettle and a mixing kettle; the pulping kettle and the mixing kettle are respectively connected with the horizontal reaction kettle, and the horizontal reaction kettle, the transfer tank and the dilution kettle are sequentially connected; a first feeding pump, a pipeline material temperature control cooler and a flowmeter are arranged between the pulping kettle and the horizontal reaction kettle, a second feeding pump and a flowmeter are arranged between the mixing kettle and the horizontal reaction kettle, a pipeline online pH meter is arranged between the horizontal reaction kettle and the transfer tank, and a conveying pump is arranged between the transfer tank and the dilution kettle.
Description
Technical Field
The utility model relates to the technical field of chemical equipment, in particular to a continuous nitration reaction device for 1, 2-diazoxynaphthalene-4-sulfonic acid.
Background
The traditional batch reactor materials are added in batches and discharged in batches, no material is fed in and discharged out in the reaction process, and each batch of operation process is as follows: the problems of high production cost, high danger, long washing time, high labor intensity, high production pollution and the like are caused by long production period of feeding, heating, cooling, discharging and cleaning. The reaction raw materials of the continuous device continuously flow into the reactor, and partial reacted products are continuously discharged from the kettle, so that the method is not only favorable for the safety of the process, strong in production capacity and the improvement of the product quality, but also effectively reduces the production cost. In the field of fine chemical engineering, adverse factors such as high human error rate, unstable quality, high three-waste amount, high safety risk and the like in intermittent reaction lead production managers to be afflicted for a long time, so that continuous research is almost never interrupted, and particularly, after environmental protection and safety pressure increase in recent years, continuous research is carried out on a second degree of heating.
Nitration reaction is the dangerous chemical industry technology of first key supervision, and what mainly adopted is intermittent type reaction, and every batch operation process needs five processes of feeding, intensification, cooling, ejection of compact and washing, and production cycle is longer, dangerous big, the cleaning time is long, intensity of labour is big, produce a large amount of waste water scheduling problem to production efficiency is lower, leads to the manufacturing cost higher.
Therefore, it is necessary to develop a continuous nitration reaction device for 1, 2-diazoxynaphthalene-4-sulfonic acid, which can realize the continuous nitration reaction of 1, 2-diazoxynaphthalene-4-sulfonic acid.
Disclosure of Invention
In order to solve the technical problems, the utility model provides a 1, 2-diazoxynaphthalene-4-sulfonic acid continuous nitration reaction device, which comprises a storage device, a feeding device, a continuous nitration reaction device and a pipeline temperature control and detection device, wherein the storage device comprises a pulping kettle and a mixing kettle, the feeding device comprises a first feeding pump and a second feeding pump, the continuous nitration reaction device comprises a horizontal reaction kettle, a transfer tank, a diluting kettle and a delivery pump, and the pipeline temperature control and detection device comprises a flowmeter, an online pipeline pH meter and a pipeline material temperature control cooler; the pulping kettle and the mixing kettle are respectively connected with the horizontal reaction kettle, and the horizontal reaction kettle, the transfer tank and the dilution kettle are sequentially connected; the automatic mixing device is characterized in that a first feeding pump, a pipeline material temperature control cooler and a flowmeter are arranged between the pulping kettle and the horizontal reaction kettle, a second feeding pump and a flowmeter are arranged between the mixing kettle and the horizontal reaction kettle, a pipeline online pH meter is arranged between the horizontal reaction kettle and the transfer tank, and a conveying pump is arranged between the transfer tank and the dilution kettle.
Wherein, the reaction device is also provided with a DCS and an SIS system.
Wherein, the pulping kettle, the mixing kettle and the diluting kettle are respectively provided with a variable frequency stirring device.
Wherein the first feed pump and the second feed pump are variable frequency feed pumps.
Wherein, the transfer tank is provided with an overflow pipe.
The utility model has the beneficial effects that: the continuous nitration reaction device of the 1, 2-diazoxynaphthalene-4-sulfonic acid provided by the utility model realizes continuous production, has the advantages of large operation elasticity, high production efficiency, good product quality, less by-products, low energy consumption and raw material consumption, safe and reliable production process and greatly reduced production cost.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it should be obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of the overall configuration of a continuous nitrification reaction apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a horizontal nitrification reactor in the continuous nitrification reactor provided by the embodiment of the present invention;
in the figure: 1-pulping kettle, 2-mixing kettle, 3-first feeding pump, 4-second feeding pump, 5-horizontal reaction kettle, 6-transfer tank, 7-dilution kettle, 8-delivery pump, 9-flowmeter, 10-pipeline online pH meter, and 11-pipeline material temperature control cooler.
Detailed Description
The following is a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements are also considered to be within the scope of the present invention.
The utility model provides a 1, 2-diazoxynaphthalene-4-sulfonic acid continuous nitration reaction device, as shown in figure 1-2, the reaction device comprises a storage device, a feeding device, a continuous nitration reaction device and a pipeline temperature control and detection device, the storage device comprises a pulping kettle 1 with a frequency conversion stirring device and a mixing kettle 2, the feeding device comprises a first feeding pump 3 and a second feeding pump 4 with frequency conversion function, the continuous nitration reaction device comprises a horizontal reaction kettle 5, a transfer tank 6 with an overflow pipe, a dilution kettle 7 with a frequency conversion stirring device and a delivery pump 8, the pipeline temperature control and detection device comprises a flowmeter 9, a pipeline online pH meter 10 and a pipeline material temperature control cooler 11; the pulping kettle 1 and the mixing kettle 2 are respectively connected with the horizontal reaction kettle 5, and the horizontal reaction kettle 5, the transfer tank 6 and the dilution kettle 7 are sequentially connected; a first feeding pump 3, a pipeline material temperature control cooler 11 and a flowmeter 9 are arranged between the pulping kettle 1 and the horizontal reaction kettle 5, a second feeding pump 4 and a flowmeter 9 are arranged between the mixing kettle 2 and the horizontal reaction kettle 5, a pipeline online pH meter 10 is arranged between the horizontal reaction kettle 5 and the transfer tank 6, and a conveying pump 8 is arranged between the transfer tank 6 and the dilution kettle 7; the reaction device is also provided with DCS and SIS system control and linkage, so that the reaction is safe and reliable, and the product quality is stable.
The specific implementation mode of the 1, 2-diazoxynaphthalene-4-sulfonic acid continuous nitration reaction device provided by the utility model is as follows:
1, 2-diazoxynaphthalene-4-sulfonic acid and sulfuric acid slurry are filled in a pulping kettle 1, mixed acid of sulfuric acid and nitric acid with the volume ratio of 1:2 is filled in a mixing kettle 2, a first feeding pump 3 and a second feeding pump 4 with frequency conversion function are started, the flow of the 1, 2-diazoxynaphthalene-4-sulfonic acid and the sulfuric acid slurry in the pulping kettle 1 is adjusted through a flow meter 9 arranged on a pipeline between the pulping kettle 1 and a horizontal reaction kettle 5, and the 1, 2-diazoxynaphthalene-4-sulfonic acid and the sulfuric acid slurry are pumped into the horizontal reaction kettle 5 through the first feeding pump 3; the flow of the mixed acid of the sulfuric acid and the nitric acid is adjusted through a flow meter 9 arranged on a pipeline between the mixing kettle 2 and the horizontal reaction kettle 5, the mixed acid of the sulfuric acid and the nitric acid is pumped into the horizontal reaction kettle 5 through a second feeding pump 4, the reacted mixed solution flows into a transfer tank 6 and then is pumped into a dilution kettle 7 with variable-frequency stirring equipment through a conveying pump 8, a nitration product is diluted and crystallized by water in the dilution kettle 7, and finally the nitration product is obtained through filter pressing of a belt filter press. The nitration reaction device provided by the utility model realizes continuous reaction by feeding, mixing, reacting, transferring heat and flowing at the same time.
The above examples only express the specific embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the present invention, and these changes and modifications are all within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (5)
1. A1, 2-diazoxynaphthalene-4-sulfonic acid continuous nitration reaction device, the reaction device includes storage device, feed arrangement, continuous nitration reaction device and pipeline control by temperature change and detection device, its characterized in that: the storage device comprises a pulping kettle (1) and a mixing kettle (2), the feeding device comprises a first feeding pump (3) and a second feeding pump (4), the continuous nitration reaction device comprises a horizontal reaction kettle (5), a transfer tank (6), a dilution kettle (7) and a delivery pump (8), and the pipeline temperature control and detection device comprises a flowmeter (9), a pipeline online pH meter (10) and a pipeline material temperature control cooler (11); the pulping kettle (1) and the mixing kettle (2) are respectively connected with the horizontal reaction kettle (5), and the horizontal reaction kettle (5), the transfer tank (6) and the dilution kettle (7) are sequentially connected; pulping kettle (1) with be equipped with first charge pump (3), pipeline material accuse temperature cooler (11) and flowmeter (9) between horizontal reation kettle (5), mix cauldron (2) with be equipped with second charge pump (4) and flowmeter (9) between horizontal reation kettle (5), horizontal reation kettle (5) with be equipped with pipeline on-line pH meter (10) between transfer tank (6), transfer tank (6) with be equipped with delivery pump (8) between dilution cauldron (7).
2. The continuous nitration reaction device of 1, 2-diazoxynaphthalene-4-sulfonic acid as claimed in claim 1, characterized in that: the reaction device is also provided with a DCS and an SIS system.
3. The continuous nitration apparatus of claim 1 or 2, wherein: the pulping kettle (1), the mixing kettle (2) and the diluting kettle (7) are respectively provided with variable-frequency stirring equipment.
4. The continuous nitration apparatus of claim 1 or 2, wherein: the first feeding pump (3) and the second feeding pump (4) are variable-frequency feeding pumps.
5. The continuous nitration apparatus of claim 1 or 2, wherein: the transfer tank (6) is provided with an overflow pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122712935.0U CN216172338U (en) | 2021-11-08 | 2021-11-08 | 1, 2-diazoxynaphthalene-4-sulfonic acid continuous nitration reaction device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122712935.0U CN216172338U (en) | 2021-11-08 | 2021-11-08 | 1, 2-diazoxynaphthalene-4-sulfonic acid continuous nitration reaction device |
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| CN216172338U true CN216172338U (en) | 2022-04-05 |
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| CN202122712935.0U Active CN216172338U (en) | 2021-11-08 | 2021-11-08 | 1, 2-diazoxynaphthalene-4-sulfonic acid continuous nitration reaction device |
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2021
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