CN117018659A - Benzoguanamine solvent rectifying system - Google Patents
Benzoguanamine solvent rectifying system Download PDFInfo
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- CN117018659A CN117018659A CN202311297080.7A CN202311297080A CN117018659A CN 117018659 A CN117018659 A CN 117018659A CN 202311297080 A CN202311297080 A CN 202311297080A CN 117018659 A CN117018659 A CN 117018659A
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- heating plate
- pipe
- connecting pipe
- rectifying
- benzoguanamine
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- 239000002904 solvent Substances 0.000 title claims abstract description 40
- GZVHEAJQGPRDLQ-UHFFFAOYSA-N 6-phenyl-1,3,5-triazine-2,4-diamine Chemical compound NC1=NC(N)=NC(C=2C=CC=CC=2)=N1 GZVHEAJQGPRDLQ-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000010438 heat treatment Methods 0.000 claims abstract description 88
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 claims description 71
- 238000001816 cooling Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 24
- 238000009833 condensation Methods 0.000 claims description 22
- 230000005494 condensation Effects 0.000 claims description 22
- 230000006835 compression Effects 0.000 claims description 9
- 238000007906 compression Methods 0.000 claims description 9
- 238000009413 insulation Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004821 distillation Methods 0.000 description 4
- JFDZBHWFFUWGJE-UHFFFAOYSA-N benzonitrile Chemical compound N#CC1=CC=CC=C1 JFDZBHWFFUWGJE-UHFFFAOYSA-N 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000009835 boiling Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- JYEUMXHLPRZUAT-UHFFFAOYSA-N 1,2,3-triazine Chemical compound C1=CN=NN=C1 JYEUMXHLPRZUAT-UHFFFAOYSA-N 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000575 pesticide Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- 239000005341 toughened glass Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/143—Fractional distillation or use of a fractionation or rectification column by two or more of a fractionation, separation or rectification step
- B01D3/146—Multiple effect distillation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/007—Energy recuperation; Heat pumps
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a benzoguanamine solvent rectifying system which comprises a rectifying tower, wherein the rectifying tower comprises a first rectifying cavity and a second rectifying cavity, the first rectifying cavity is formed by separating a first heating plate positioned at the upper part of the rectifying tower, and a region above the first heating plate in the rectifying tower is the first rectifying cavity; the second rectifying cavity is an area between the first heating plate and the second heating plate in the rectifying tower, and the second heating plate is positioned at the lower part of the first heating plate. The invention discovers that the prior art has the problems that the solvent quality of benzoguanamine is reduced due to more water after the solvent is rectified, and the invention specifically breaks through the conventional secondary rectification mode of adopting a secondary rectification system to carry out secondary rectification on the solvent, and the concentrated phase is rectified firstly and then rectified again.
Description
Technical Field
The invention relates to the technical field of rectification, in particular to a benzoguanamine solvent rectification system.
Background
Benzoguanamine is also called benzomelamine, is a triazine nuclear compound with the same structure as melamine, is also a common special chemical product, and has been widely used for preparing thermosetting resin, modified resin, amino paint, plastics, medicines, pesticides, dyes and the like.
The current industrial synthesis method of benzomelamine mainly adopts foreign technology, such as dicyandiamide and benzonitrile react under high pressure under the action of a catalyst to generate benzomelamine. In the reaction process, the solvent relates to n-butanol and the like, recycling is realized through one-step rectification, the rectification process in the prior art is to recycle the n-butanol in a direct rectification mode, and the rectification product is directly recycled, but the recovery rate of the n-butanol is poor and the content of the n-butanol is not high.
Disclosure of Invention
The present invention provides a benzoguanamine solvent rectification system to at least partially solve the problems set forth in the background art above.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides a benzoguanamine solvent rectifying system, which comprises a rectifying tower, wherein the rectifying tower comprises a first rectifying cavity and a second rectifying cavity,
the first rectifying cavity is formed by separating a first heating plate positioned at the upper part of the rectifying tower, and the area above the first heating plate in the rectifying tower is the first rectifying cavity;
the second rectifying cavity is a region between the first heating plate and the second heating plate in the rectifying tower, and the second heating plate is positioned at the lower part of the first heating plate; the first heating plate is provided with a first liquid guide pipe communicated with the second rectifying cavity and used for conveying the n-butyl alcohol fraction in the first rectifying cavity into the second rectifying cavity;
a second liquid guide pipe is arranged on the second heating plate and used for guiding out the n-butyl alcohol fraction of the second rectifying cavity;
the side wall of the rectifying tower is fixedly connected with a liquid inlet pipe, and the liquid inlet pipe is communicated with the first rectifying cavity.
In a further embodiment, the first heating plate and the second heating plate are respectively provided with an air flow heating device, the air flow heating device comprises a vortex tube, the vortex tube comprises an input end and an output end, the input end is fixedly connected with a first connecting pipe, one end of the first connecting pipe is fixedly connected with a compressed air pump, the output end is fixedly connected with a second connecting pipe, one end of the second connecting pipe is connected with a fourth connecting pipe through a first electromagnetic three-way valve, the other end of the second connecting pipe is connected with a third connecting pipe through a second electromagnetic three-way valve, and one ends of the fourth connecting pipe and the third connecting pipe penetrate through the side wall of the rectifying tower and are communicated with one end of a diversion channel in each heating plate.
In a further embodiment, a seventh connecting pipe and an eighth connecting pipe are fixedly connected to the side wall of the rectifying tower, the seventh connecting pipe and the eighth connecting pipe are respectively communicated with the tops of the first rectifying cavity and the second rectifying cavity, and a condensation collecting device is arranged between the seventh connecting pipe and the eighth connecting pipe.
In a further embodiment, a central controller is arranged on the outer side wall of the rectifying tower, a first temperature sensor and a second temperature sensor are respectively arranged on the side walls of the first heating plate and the second heating plate, and the first temperature sensor, the second temperature sensor, the compression air pump, the electromagnetic valve, the first electromagnetic three-way valve and the second electromagnetic three-way valve are electrically connected with the central controller.
In a further embodiment, the first heating plate and the second heating plate are both arranged in an inverted cone shape.
In a further embodiment, the flow-directing channels are arranged in a spiral loop.
In a further embodiment, the condensation collection device comprises a cooling cylinder, a condensation pipe is arranged in the cooling cylinder, the upper end of the condensation pipe is fixedly connected with a tenth connecting pipe, the tenth connecting pipe is fixedly connected with a ninth connecting pipe, two ends of the ninth connecting pipe are respectively connected with the seventh connecting pipe and the eighth connecting pipe, the bottom end of the condensation pipe penetrates through the bottom side wall of the cooling cylinder, and the cold air output end of the vortex pipe is fixedly connected to the bottom side wall of the cooling cylinder and is communicated with the inside of the cooling cylinder.
In a further embodiment, the bottom side of the cooling cylinder is fixedly connected with a collecting box, the bottom end of the condensing pipe is communicated with the inside of the collecting box, a fifth connecting pipe is fixedly connected to the side wall of the collecting box, and a valve is arranged on the fifth connecting pipe.
In a further embodiment, a thermal barrier is provided on the inside wall of the rectifying column.
Compared with the prior art, the invention has the beneficial effects that:
the invention has reasonable design and ingenious conception, the concentrated phase is rectified by adopting a secondary rectification mode for the n-butanol solvent in the benzoguanamine production process, and then the concentrated phase is rectified again, so that the n-butanol obtained by the secondary rectification has higher purity and lower impurity and moisture compared with the primary rectification, and the quality of the product is improved. Accordingly, the corresponding system provided by the invention can play roles of improving the rectifying efficiency, reducing the energy loss and improving the yield.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings. Specific embodiments of the present invention are given in detail by the following examples and the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the invention. In the drawings:
FIG. 1 is a schematic diagram of a benzoguanamine solvent rectification system according to the present invention;
FIG. 2 is a schematic diagram of a front cross-sectional structure of a benzoguanamine solvent rectification system according to the present invention;
FIG. 3 is a schematic diagram of a control system connection structure in a benzoguanamine solvent rectification system according to the present invention;
FIG. 4 is a schematic diagram showing the structure of a first heating plate in a benzoguanamine solvent rectification system according to the present invention;
FIG. 5 is a schematic view of the flow guiding channel inside the first heating plate according to the present invention.
In the drawings, the list of components represented by the various numbers is as follows:
1. a first connection pipe; 2. a compression air pump; 3. a second connection pipe; 4. a second electromagnetic three-way valve; 5. a support column; 6. a third connection pipe; 7. a ninth connection pipe; 8. a seventh connection pipe; 9. an eighth connection pipe; 10. a second temperature sensor; 11. a fourth connection pipe; 12. a first heating plate; 13. a first temperature sensor; 14. a rectifying tower; 15. a condensing tube; 16. a tenth connection pipe; 17. a vortex tube; 18. a cooling cylinder; 19. a fifth connection pipe; 20. a collection box; 21. a thermal insulation layer; 22. a second heating plate; 23. a first electromagnetic three-way valve; 24. a central controller; 25. a second catheter; 26. a second rectification chamber; 27. an electromagnetic valve; 28. a first catheter; 29. a diversion channel; 30. a first rectification chamber; 31. a liquid inlet pipe; 32. and an observation window.
Detailed Description
The principles and features of the present invention are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the invention and are not to be construed as limiting the scope of the invention. The invention is more particularly described by way of example in the following paragraphs with reference to the drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in a very simplified form and are all to a non-precise scale, merely for convenience and clarity in aiding in the description of embodiments of the invention.
It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In the benzoguanamine reaction process, n-butanol is adopted as a solvent, and after the reaction, the benzoguanamine solvent needs to be rectified, namely, the n-butanol solvent recovered in the reaction process is purified. Because the n-butanol recovered in the reaction process contains moisture and various impurities, the common practice is to heat materials from a tower kettle by utilizing the difference of boiling points of all components in the concentrated n-butanol, and separate water from the n-butanol. Through researches, the purity of the n-butanol recovered by a single step of a single distiller is not high, and the main reason is that the distilled product still contains moisture after detection and distillation, which can seriously affect the yield and content of the product. The reason for this is that, by analysis, n-butanol and water have close boiling points and are relatively easily distilled off simultaneously by rectification. In the embodiment of the invention, the double rectification system is arranged, the distillation temperature of the n-butyl alcohol fraction is further controlled in the second distillation, and the n-butyl alcohol and the water are separated as much as possible, so that the product complexity and the cost are increased, but the n-butyl alcohol recovery effect can be greatly improved, and the yield of benzoguanamine is improved.
Referring to fig. 1-5, the embodiment of the invention provides a benzoguanamine solvent rectification system, which comprises a rectification tower 14, wherein a plurality of support columns 5 are fixedly connected to the bottom side wall of the rectification tower 14, a heat insulation layer 21 is arranged on the inner side wall of the rectification tower 14, a first heating plate 12 and a second heating plate 22 are fixedly connected to the rectification tower 14, a first rectification cavity 30 is arranged in the area between the first heating plate 12 and the upper side of the rectification tower 14, a second rectification cavity 26 is arranged in the area between the first heating plate 12 and the second heating plate 22, two liquid inlet pipes 31 are fixedly connected to the side wall of the rectification tower 14, a blocking cover is arranged at one end of each liquid inlet pipe 31, the two liquid inlet pipes 31 are respectively communicated with the tops of the first rectification cavity 30 and the second rectification cavity 26, the central side walls of the first heating plate 12 and the second heating plate 22 are fixedly connected with a first liquid guide pipe 28 and a second liquid guide pipe 25 respectively, electromagnetic valves 27 are arranged on the side walls of the first liquid guide pipe 28 and the second liquid guide pipe 25, the second liquid guide pipe 25 penetrates through the bottom side wall of the rectifying tower 14, an airflow heating device is arranged between the first heating plate 12 and the second heating plate 22, a seventh connecting pipe 8 and an eighth connecting pipe 9 are fixedly connected to the side wall of the rectifying tower 14, the seventh connecting pipe 8 and the eighth connecting pipe 9 are communicated with the tops of the first rectifying cavity 30 and the second rectifying cavity 26 respectively, and a condensation collecting device is arranged between the seventh connecting pipe 8 and the eighth connecting pipe 9.
Referring to fig. 2, the air flow heating device includes a vortex tube 17, an input end of the vortex tube 17 is fixedly connected with a first connecting tube 1, one end of the first connecting tube 1 is fixedly connected with a compression air pump 2, a hot air output end of the vortex tube 17 is fixedly connected with a second connecting tube 3, one end of the second connecting tube 3 is connected with a fourth connecting tube 11 through a first electromagnetic three-way valve 23, the other end of the second connecting tube 3 is connected with a third connecting tube 6 through a second electromagnetic three-way valve 4, diversion channels 29 are respectively arranged in the first heating plate 12 and the second heating plate 22, one ends of the fourth connecting tube 11 and the third connecting tube 6 penetrate through the side wall of the rectifying tower 14 and are respectively communicated with one ends of the diversion channels 29 in the first heating plate 12 and the second heating plate 22, a second liquid guiding tube 25 is fixedly connected between the other ends of the diversion channels 29 in the first heating plate 12 and the second heating plate 22, the first heating plate 12 and the second heating plate 22 are all in conical arrangement, the diversion channels 29 are all in spiral annular arrangement, a central controller 24 is arranged on the outer side wall of the rectifying tower 14, a first temperature sensor 13 and a second temperature sensor 10 are respectively arranged on the side walls of the first heating plate 12 and the second heating plate 22, the first temperature sensor 13, the second temperature sensor 10, the compressed air pump 2, the electromagnetic valve 27, the first electromagnetic three-way valve 23 and the second electromagnetic three-way valve 4 are all connected with the central controller 24, after compressed air flow generated by the compressed air pump 2 enters the vortex tube 17, hot air flow emitted by the vortex tube 17 can enter the second connecting tube 3, and then the hot air flow can enter the first heating plate 12 or the second heating plate 22 through the fourth connecting tube 11 or the third connecting tube 6, so that the first heating plate 12 and/or the second heating plate 22 rectifies the solvent.
Referring to fig. 2, the condensation collecting device includes a cooling cylinder 18, a condensation tube 15 is disposed in the cooling cylinder 18, an upper end of the condensation tube 15 is fixedly connected with a tenth connecting tube 16, the tenth connecting tube 16 is fixedly connected with a ninth connecting tube 7, two ends of the ninth connecting tube 7 are respectively connected with a seventh connecting tube 8 and an eighth connecting tube 9, a bottom end of the condensation tube 15 penetrates through a bottom side wall of the cooling cylinder 18, a cool air output end of the vortex tube 17 is fixedly connected to the bottom side wall of the cooling cylinder 18 and is communicated with an inside of the cooling cylinder 18, the condensation tube 15 is in a spiral tube shape, a collecting box 20 is fixedly connected to a bottom side of the cooling cylinder 18, a bottom end of the condensation tube 15 is communicated with the inside of the collecting box 20, a fifth connecting tube 19 is fixedly connected to a side wall of the collecting box 20, a valve is disposed on the fifth connecting tube 19, water vapor and other impurities vaporized by distillation of n-butanol solvent can enter the ninth connecting tube 8 or eighth connecting tube 9, then enter the condensation tube 15 through the tenth connecting tube 16, a cool air can be generated at a cool air end of the cooling tube 17 and be input into the cooling cylinder 18, the cooling cylinder 18 is reduced, the condensation tube 15 is condensed, and the water vapor and other impurities are further prevented from being condensed in the collecting box 20, and the condensation tube is prevented from being polluted by the condensation tube.
Referring to fig. 2, an observation window 32 is disposed on a side wall of the rectifying tower 14, the observation window 32 may be made of transparent toughened glass, and the rectifying process in the first rectifying cavity 30 and the second rectifying cavity 26 in the rectifying tower 14 may be directly observed through the observation window 32, so that convenience is high.
The basic working principle of the above embodiment is basically as follows:
when primary rectification is carried out, firstly, n-butanol solvent enters a first rectification cavity 30 through a liquid inlet pipe 31 above, then a compression air pump 2 is started, a first electromagnetic three-way valve 23 and a second electromagnetic three-way valve 4 are regulated, a second connecting pipe 3 is communicated with a fourth connecting pipe 11, a third connecting pipe 6 is communicated with the outside air, when the compression air pump 2 enters compressed air into a vortex tube 17 through a first connecting pipe 1, one end of the vortex tube 17 can generate hot air flow which enters a diversion channel 29 in a first heating plate 12 through the second connecting pipe 3 and the fourth connecting pipe 11, the hot air flow can heat the first heating plate 12 when passing through the diversion channel 29, the first heating plate 12 can heat the n-butanol solvent, meanwhile, a central controller 24 can detect the temperature of the n-butanol solvent through a first temperature sensor 13, the central controller 24 can regulate the heating temperature of the first heating plate 12 through controlling the compressed air flow of the compression air pump 2, and then the first heating plate 12 is in the rectification temperature range of the n-butanol solvent, the first rectification temperature range of the n-butanol solvent is realized, and the n-butanol solvent primary rectification temperature is set at the first rectification temperature range of 100 ℃. The hot air flow can enter the second heating plate 22 through the second liquid guide pipe 25 after passing through the first heating plate 12, residual heat of the hot air flow can preheat the second heating plate 22 after passing through the diversion channel 29 in the second heating plate 22, so that energy consumption during secondary rectification of the second heating plate 22 is conveniently saved, and finally the hot air flow is discharged into the outside air from one end of the second electromagnetic three-way valve 4 through the third connecting pipe 6.
When secondary rectification is carried out, the electromagnetic valve 27 on the first liquid guide pipe 28 can be opened, so that the n-butanol solvent after primary rectification is conveyed into the second rectification cavity 26, then the first electromagnetic three-way valve 23 and the second electromagnetic three-way valve 4 are regulated, the fourth connecting pipe 11 is communicated with the outside air, the second connecting pipe 3 is communicated with the third connecting pipe 6, then the compression air pump 2 is started, after the compression air pump 2 generates compressed air flow into the vortex tube 17, the hot air flow emitted by the vortex tube 17 passes through the second connecting pipe 3 and the third connecting pipe 6 and then enters the diversion channel 29 in the second heating plate 22, and meanwhile, the hot air flow can carry out secondary heating rectification on the n-butanol solvent through the second heating plate 22, and the n-butanol rectification temperature of the step is set to be 105-115 ℃. After the secondary heating rectification is finished, the electromagnetic valve 27 on the second liquid guide pipe 25 can be opened, so that the n-butanol solvent after the secondary rectification is discharged from the second liquid guide pipe 25, wherein hot air flow passing through the second heating plate 22 can enter the first heating plate 12 through the second liquid guide pipe 25, and the first heating plate 12 is preheated, so that the energy consumption of the first heating plate 12 in the next primary rectification is reduced.
In the primary rectification and secondary rectification processes, the vaporized water vapor and other impurities distilled from the n-butanol solvent can enter the ninth connecting pipe 7 through the seventh connecting pipe 8 or the eighth connecting pipe 9, then enter the condensing pipe 15 through the tenth connecting pipe 16, cold air flow can be generated at the cold air end of the vortex pipe 17 and is input into the cooling cylinder 18, the condensing pipe 15 in the cooling cylinder 18 is lowered, and then the water vapor and other impurities in the condensing pipe 15 are condensed and liquefied and collected in the collecting box 20, so that the polluted air is prevented.
The above description is only of the preferred embodiments of the present invention, and is not intended to limit the present invention in any way; those skilled in the art will readily appreciate that the present invention may be implemented as shown in the drawings and described above; however, those skilled in the art will appreciate that many modifications, adaptations, and variations of the present invention are possible in light of the above teachings without departing from the scope of the invention; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present invention still fall within the scope of the present invention.
Claims (9)
1. Benzoguanamine solvent rectification system comprising a rectification column (14), characterized in that the rectification column (14) comprises a first rectification chamber (30) and a second rectification chamber (26), wherein,
the first rectifying cavity (30) is formed by separating a first heating plate (12) positioned at the upper part of the rectifying tower (14), and a region above the first heating plate (12) in the rectifying tower (14) is the first rectifying cavity (30);
the second rectifying cavity (26) is a region between the first heating plate (12) and a second heating plate (22) in the rectifying tower (14), and the second heating plate (22) is positioned at the lower part of the first heating plate (12);
a first liquid guide pipe (28) communicated with the second rectifying cavity (26) is arranged on the first heating plate (12) and is used for conveying the n-butyl alcohol fraction in the first rectifying cavity (30) into the second rectifying cavity (26);
a second liquid guide pipe (25) is arranged on the second heating plate (22) and is used for guiding out the n-butyl alcohol fraction of the second rectifying cavity (26);
the side wall of the rectifying tower (14) is fixedly connected with a liquid inlet pipe, and the liquid inlet pipe is communicated with the first rectifying cavity (30).
2. The benzoguanamine solvent rectification system of claim 1, wherein:
the first heating plate (12) and the second heating plate (22) are respectively provided with an air flow heating device, and the air flow heating device comprises a vortex tube (17):
the vortex tube (17) comprises an input end and an output end, the input end is fixedly connected with a first connecting tube (1), one end of the first connecting tube (1) is fixedly connected with a compressed air pump (2), the output end is fixedly connected with a second connecting tube (3), one end of the second connecting tube (3) is connected with a fourth connecting tube (11) through a first electromagnetic three-way valve (23), the other end of the second connecting tube (3) is connected with a third connecting tube (6) through a second electromagnetic three-way valve (4), and one ends of the fourth connecting tube (11) and the third connecting tube (6) penetrate through the side wall of the rectifying tower (14) and are communicated with one end of each heating plate inner flow guide channel.
3. The benzoguanamine solvent rectification system of claim 2, wherein:
a seventh connecting pipe (8) and an eighth connecting pipe (9) are fixedly connected to the side wall of the rectifying tower (14), the seventh connecting pipe (8) and the eighth connecting pipe (9) are respectively communicated with the tops of the first rectifying cavity (30) and the second rectifying cavity (26), and a condensation collecting device is arranged between the seventh connecting pipe (8) and the eighth connecting pipe (9).
4. The benzoguanamine solvent rectification system according to claim 2, wherein a central controller (24) is arranged on the outer side wall of the rectification tower (14), a first temperature sensor (13) and a second temperature sensor (10) are respectively arranged on the side walls of the first heating plate (12) and the second heating plate (22), and the first temperature sensor (13), the second temperature sensor (10), the compression air pump (2), the electromagnetic valve (27), the first electromagnetic three-way valve (23) and the second electromagnetic three-way valve (4) are electrically connected with the central controller (24).
5. The benzoguanamine solvent rectification system of claim 3, wherein the first heating plate (12) and the second heating plate (22) are each disposed in an inverted cone shape.
6. The benzoguanamine solvent rectification system as claimed in claim 4, wherein said flow guide channels (29) are arranged in a spiral loop.
7. The benzoguanamine solvent rectification system as claimed in claim 3, wherein the condensation collection device comprises a cooling cylinder (18), a condensation pipe (15) is arranged in the cooling cylinder (18), a tenth connecting pipe (16) is fixedly connected to the upper end of the condensation pipe (15), a ninth connecting pipe (7) is fixedly connected to the tenth connecting pipe (16), two ends of the ninth connecting pipe (7) are respectively connected with the seventh connecting pipe (8) and the eighth connecting pipe (9), the bottom end of the condensation pipe (15) penetrates through the bottom side wall of the cooling cylinder (18), and the cold air output end of the vortex pipe (17) is fixedly connected to the bottom side wall of the cooling cylinder (18) and is communicated with the inside of the cooling cylinder (18).
8. The benzoguanamine solvent rectification system as claimed in claim 7, wherein a collection box (20) is fixedly connected to the bottom side of the cooling cylinder (18), the bottom end of the condensation pipe (15) is communicated with the interior of the collection box (20), a fifth connecting pipe (19) is fixedly connected to the side wall of the collection box (20), and a valve is arranged on the fifth connecting pipe (19).
9. The benzoguanamine solvent rectification system as claimed in claim 1, wherein a thermal insulation layer (21) is provided on an inner side wall of the rectification column (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311297080.7A CN117018659A (en) | 2023-10-09 | 2023-10-09 | Benzoguanamine solvent rectifying system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311297080.7A CN117018659A (en) | 2023-10-09 | 2023-10-09 | Benzoguanamine solvent rectifying system |
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| Publication Number | Publication Date |
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| CN117018659A true CN117018659A (en) | 2023-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311297080.7A Pending CN117018659A (en) | 2023-10-09 | 2023-10-09 | Benzoguanamine solvent rectifying system |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208525864U (en) * | 2018-06-25 | 2019-02-22 | 上饶京新药业有限公司 | A kind of multicomponent separation formula rectifying column |
| CN212770792U (en) * | 2020-05-22 | 2021-03-23 | 河北博尚裘革产业技术研究有限责任公司 | Double-distillation box structure of fur degreasing machine |
| CN115160105A (en) * | 2022-07-08 | 2022-10-11 | 苏州金宏气体股份有限公司 | Method and device for purifying hexafluoro-1,3-butadiene by using eddy current technology |
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2023
- 2023-10-09 CN CN202311297080.7A patent/CN117018659A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208525864U (en) * | 2018-06-25 | 2019-02-22 | 上饶京新药业有限公司 | A kind of multicomponent separation formula rectifying column |
| CN212770792U (en) * | 2020-05-22 | 2021-03-23 | 河北博尚裘革产业技术研究有限责任公司 | Double-distillation box structure of fur degreasing machine |
| CN115160105A (en) * | 2022-07-08 | 2022-10-11 | 苏州金宏气体股份有限公司 | Method and device for purifying hexafluoro-1,3-butadiene by using eddy current technology |
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