CN218740289U - Amino glycerine serialization rectification system - Google Patents
Amino glycerine serialization rectification system Download PDFInfo
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- CN218740289U CN218740289U CN202223314961.9U CN202223314961U CN218740289U CN 218740289 U CN218740289 U CN 218740289U CN 202223314961 U CN202223314961 U CN 202223314961U CN 218740289 U CN218740289 U CN 218740289U
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Abstract
The utility model discloses an amino glycerol continuous rectification system, which comprises a front fraction separation unit, a front fraction temporary storage tank, a product rectification unit, a product temporary storage tank, a product packaging unit and a kettle residue temporary storage kettle; the outlet of the front fraction receiving tank of the front fraction separation unit is communicated with the inlet of the front fraction temporary storage tank, the first pipeline of the front fraction separation unit is communicated with the inlet of the product rectifying tower of the product rectifying unit through a mother liquid discharge pipeline, the outlet of the product receiving tank of the product rectifying unit is communicated with the inlet of the product temporary storage tank, the outlet of the product temporary storage tank is connected with the product packaging unit through a product transfer pump, and the third pipeline of the product rectifying unit is communicated with the inlet of the kettle residue temporary storage tank through a residual liquid discharge pipeline.
Description
The technical field is as follows:
the utility model relates to a chemical production technical field, concretely relates to amino glycerine serialization rectification system.
Background art:
amino glycerol, alternative name: the preparation method of the 3-amino-1,2-propylene glycol comprises the following steps: the method comprises the steps of mixing 3-chloro-1,2-propylene glycol with an aqueous solution of ammonia to carry out ammonolysis reaction to generate a 3-amino-1,2-propylene glycol aqueous solution and ammonium chloride, and then carrying out dehydration, desalting and crude steaming to obtain an amino glycerol crude product, wherein the amino glycerol crude product contains serinol, 1,3-diamino-2-propanol and glycerol, the serinol and the amino glycerol are isomers, and the separation difficulty is high, so that the separation of the serinol, 1,3-diamino-2-propanol and the glycerol through rectification is a key step for preparing the high-purity amino glycerol.
The traditional rectification process adopts tower type intermittent rectification, wherein a top outlet of an original rectification tower is respectively connected with a front fraction receiving tank and a product receiving tank, when the amino glycerol crude product is rectified, serinol and 1,3-diamino-2-propanol are taken as front fractions and are taken out, the front fractions and the products are taken out successively through the top outlet of the rectification tower, residual liquid (mainly comprising glycerol) is discharged through a bottom outlet of the rectification tower, when the front fractions are taken out, the top outlet of the rectification tower is only communicated with the front fraction receiving tank, after about 8 hours of receiving, sampling analysis is carried out, and when the content of amino glycerol in the front fractions is more than 98%, the front fractions are taken out; when the product is extracted, the top outlet of the rectifying tower is only communicated with the product receiving tank, when the rectifying temperature is raised to 165 ℃, and no fraction is extracted from the top outlet of the rectifying tower, the rectifying tower is considered to be finished, and after the rectifying tower is cooled, residual liquid is discharged from the bottom of the rectifying tower; and repeating the operation steps to rectify the next batch of crude amino glycerol.
The rectification process mainly has the following defects that when each batch of crude amino glycerol is rectified, the product can be extracted after the front fraction is completely extracted, and the time consumption is long; meanwhile, intermittent rectification needs continuous heating and cooling, the heating process after each batch of crude products are put into a rectification tower and the cooling process after rectification take a long time, generally, each batch of crude products are fed by 5 tons, the rectification time is 96 hours, and the whole process is extremely slow; in addition, the valve switching in the feeding and discharging process needs manual operation, the labor intensity of personnel is high, and the rectification efficiency is low.
The utility model has the following contents:
an object of the utility model is to provide an amino glycerine serialization rectification system has solved traditional rectification technology and has adopted tower batch distillation longer consuming time, the problem of inefficiency.
The utility model discloses implement by following technical scheme: an amino glycerol continuous rectification system comprises a front fraction separation unit, a front fraction temporary storage tank, a product rectification unit, a product temporary storage tank, a product packaging unit and a kettle residue temporary storage kettle; an outlet of a front fraction receiving tank of the front fraction separation unit is communicated with an inlet of the front fraction temporary storage tank, and a first pipeline of the front fraction separation unit is communicated with an inlet of a product rectifying tower of the product rectifying unit through a mother liquid discharge pipeline; the export of the product receiving tank of product rectification unit with the import intercommunication of product jar of keeping in, the export of product jar of keeping in with the product packaging unit passes through the product and changes the material pump and link to each other, the third pipeline of product rectification unit with the import of the incomplete cauldron of keeping in passes through raffinate discharge pipeline intercommunication.
Preferably, the front cut separation unit comprises a front cut rectifying tower, a front cut condenser, a front cut reflux ratio controller, the front cut receiving tank and a front cut evaporator; the top outlet of the front fraction rectifying tower is communicated with the inlet of the front fraction condenser, the liquid outlet of the front fraction condenser is communicated with the inlet of the front fraction reflux ratio controller through a second pipeline, the first outlet of the front fraction reflux ratio controller is communicated with the top of the front fraction rectifying tower, and the second outlet of the front fraction reflux ratio controller is communicated with the inlet of the front fraction receiving tank; and the bottom outlet of the front fraction rectifying tower is communicated with the inlet of a front fraction tower circulating pump, the outlet of the front fraction tower circulating pump is communicated with the top inlet of the front fraction evaporator through the first pipeline, and the bottom outlet of the front fraction evaporator is communicated with the lower part of the front fraction rectifying tower.
Preferably, the product rectification unit comprises the product rectification tower, a product condenser, a product reflux ratio controller, the product receiving tank and a product evaporator; the top outlet of the product rectifying tower is communicated with the inlet of the product condenser, the liquid outlet of the product condenser is communicated with the inlet of the product reflux ratio controller through a fourth pipeline, the first outlet of the product reflux ratio controller is communicated with the top of the product rectifying tower, and the second outlet of the product reflux ratio controller is communicated with the inlet of the product receiving tank; and the bottom outlet of the product rectifying tower is communicated with the inlet of a product tower circulating pump, the outlet of the product tower circulating pump is communicated with the top inlet of the product evaporator through a third pipeline, and the bottom outlet of the product evaporator is communicated with the lower part of the product rectifying tower.
Preferably, the system further comprises a front fraction vacuum cold trap and a first vacuum system, wherein the first vacuum system comprises a first vacuum buffer tank and a front fraction vacuum pump, a gas outlet of the front fraction condenser is communicated with an inlet of the front fraction vacuum cold trap, a liquid outlet of the front fraction vacuum cold trap is communicated with the second pipeline, a gas outlet of the front fraction vacuum cold trap is communicated with an inlet of the first vacuum buffer tank, an outlet of the first vacuum buffer tank is communicated with an inlet of the front fraction vacuum pump, and an outlet of the front fraction vacuum pump is communicated with an inlet of the first evacuation pipeline.
Preferably, the system further comprises a product vacuum cold trap and a second vacuum system, the second vacuum system comprises a second vacuum buffer tank and a product vacuum pump, a gas outlet of the product condenser is communicated with an inlet of the product vacuum cold trap, a liquid outlet of the product vacuum cold trap is communicated with the fourth pipeline, a gas outlet of the product vacuum cold trap is communicated with an inlet of the second vacuum buffer tank, an outlet of the second vacuum buffer tank is communicated with an inlet of the product vacuum pump, and an outlet of the product vacuum pump is communicated with an inlet of the second evacuation pipeline.
Preferably, the product packaging unit comprises a product packaging kettle, a product packaging pump and a packaging barrel; the export of product commentaries on classics material pump with the import intercommunication of product packaging cauldron, the export of product packaging cauldron with the import intercommunication of product packaging pump, the export of product packaging pump with the import intercommunication of pail pack.
Preferably, a first liquid level sensor is arranged in the front fraction rectifying tower, a first electromagnetic valve is arranged on the mother liquor discharge pipeline, the first liquid level sensor is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the first electromagnetic valve.
Preferably, a second liquid level sensor is arranged in the product rectification tower, a second electromagnetic valve is arranged on the raffinate discharge pipeline, the second liquid level sensor is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the second electromagnetic valve.
The utility model has the advantages that: first, the utility model discloses be equipped with front end fraction rectifying column and product rectifying column, front end fraction rectifying column is arranged in separating the low boiling impurity in the amino glycerine crude product (with 1,3-diamino-2-propanol and serinol's mixture as leading), when low boiling impurity is extracted, high boiling composition in the front end fraction rectifying column (with amino glycerine and glycerine as leading) can get into in the product rectifying column through first pipeline, mother liquor discharge pipeline, the product rectifying column is arranged in separating the amino glycerine product in the amino glycerine crude product, when amino glycerine product is extracted, glycerine in the product rectifying column passes through the third pipeline as the cauldron, discharge pipeline gets into in the cauldron incomplete temporary storage cauldron, whole rectification process is the serialization process, need not to wait for the front end fraction after the complete extraction, carry out the product extraction again, and simultaneously, the repeated intensification when having avoided batch rectification, the cooling process, save the rectification time, promote rectification efficiency, enlarge the rectification capacity.
Secondly, a first liquid level sensor is arranged in the front cut rectifying tower, a first electromagnetic valve is arranged on a mother liquor discharge pipeline, the first liquid level sensor is electrically connected with the input end of a controller, the output end of the controller is electrically connected with the first electromagnetic valve, the liquid level in the front cut rectifying tower is detected in real time through the first liquid level sensor, signals are transmitted to the controller in real time, and the controller controls the first electromagnetic valve to be opened and closed; the utility model discloses an be equipped with the second level sensor in the product rectifying column, be equipped with the second solenoid valve on the raffinate discharge pipeline, the second level sensor is connected with the input electricity of controller, and the output of controller is connected with the second solenoid valve electricity, detects the liquid level in the product rectifying column through the second level sensor in real time, and with signal real-time transmission to the controller, through the switching of controller control second solenoid valve; through the linkage of the liquid level in the front-cut rectifying tower and the first electromagnetic valve and the linkage of the liquid level in the product rectifying tower and the second electromagnetic valve, the accurate control of the liquid levels in the front-cut rectifying tower and the product rectifying tower is realized, the automatic production is carried out, the personnel operation is reduced, and the rectifying efficiency is further improved.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic diagram of the control principle of the present invention.
The components in the drawings are numbered as follows: a front fraction separation unit 1, a front fraction rectifying tower 1.1, a front fraction condenser 1.2, a front fraction reflux ratio controller 1.3, a front fraction receiving tank 1.4, a front fraction evaporator 1.5, a front fraction tower circulating pump 1.6, a front fraction temporary storage tank 2, a front fraction vacuum cold trap 3, a first vacuum system 4, a first vacuum buffer tank 4.1, a front fraction vacuum pump 4.2, a product rectifying unit 5, a product rectifying tower 5.1, a product condenser 5.2, a product reflux ratio controller 5.3, a product receiving tank 5.4, a product evaporator 5.5, a product tower circulating pump 5.6, a product temporary storage tank 6, a product packaging unit 7, a front fraction condenser 1.2, a front fraction reflux ratio controller 1.3 the device comprises a product packaging kettle 7.1, a product packaging pump 7.2, a packaging barrel 7.3, a product vacuum cold trap 8, a second vacuum system 9, a second vacuum buffer tank 9.1, a product vacuum pump 9.2, a kettle residue temporary storage kettle 10, a second pipeline 11, a front fraction transferring pump 12, a first emptying pipeline 13, a first pipeline 14, a mother liquor discharging pipeline 15, a fourth pipeline 16, a product transferring pump 17, a second emptying pipeline 18, a third pipeline 19, a residual liquid discharging pipeline 20, a kettle residue transferring pump 21, a first liquid level sensor 22, a first electromagnetic valve 23, a controller 24, a second liquid level sensor 25 and a second electromagnetic valve 26.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "front", "rear", "top", "bottom", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1-2, a continuous rectification system for amino glycerol comprises a front fraction separation unit 1, a front fraction temporary storage tank 2, a front fraction vacuum cold trap 3, a first vacuum system 4, a product rectification unit 5, a product temporary storage tank 6, a product packaging unit 7, a product vacuum cold trap 8, a second vacuum system 9, and a kettle residue temporary storage tank 10, wherein the front fraction separation unit 1 is mainly used for separating 1,3-diamino-2-propanol and serinol in an amino glycerol crude product; storing 1,3-diamino-2-propanol and serinol via a front cut temporary storage tank 2; collecting easily condensable gas discharged from the front fraction separation unit 1 through a front fraction vacuum cold trap 3; maintaining the front fraction separation unit 1 in a negative pressure environment during rectification by a first vacuum system 4; the product rectification unit 5 is mainly used for separating the amino glycerin from the amino glycerin crude product; storing high-purity amino glycerol through a product temporary storage tank 6; packaging the rectified high-purity amino glycerol by a product packaging unit 7; trapping easily condensable gas discharged from the product rectifying unit 5 by a product vacuum cold trap 8; maintaining the product rectification unit 5 in a negative pressure environment during rectification through a second vacuum system 9; storing glycerol through a temporary kettle residue storage kettle 10;
the front fraction separation unit 1 comprises a front fraction rectifying tower 1.1, a front fraction condenser 1.2, a front fraction reflux ratio controller 1.3, a front fraction receiving tank 1.4 and a front fraction evaporator 1.5, and the product rectifying unit 5 comprises a product rectifying tower 5.1, a product condenser 5.2, a product reflux ratio controller 5.3, a product receiving tank 5.4 and a product evaporator 5.5; rectifying the crude product of the amino glycerol by a front fraction rectifying tower 1.1 to separate 1,3-diamino-2-propanol and serinol from the crude product of the amino glycerol, wherein a front fraction condenser 1.2 is used for condensing 1,3-diamino-2-propanol and serinol mixture steam, a front fraction reflux ratio controller 1.3 is used for automatically adjusting a reflux ratio to control the quality of the extracted front fraction, and a front fraction receiving tank 1.4 is used for receiving 1,3-diamino-2-propanol and serinol which are extracted; the amino glycerol crude product is continuously rectified through a product rectifying tower 5.1, the amino glycerol in the amino glycerol crude product is separated, a product condenser 5.2 is used for condensing amino glycerol steam, a product reflux ratio controller 5.3 is used for automatically adjusting the reflux ratio so as to control the quality of the extracted amino glycerol product, a product receiving tank 5.4 is used for receiving the extracted high-purity amino glycerol, the above devices are all existing devices, and the specific structure is not described herein; forepart evaporimeter 1.5 and product evaporimeter 5.5 all use falling film evaporator, and falling film evaporator also is existing equipment, and concrete structure is not repeated here, strengthens the evaporation process through falling film evaporator, improves the evaporation rate, reduces the resistance that the vapour came out, shortens the heat-up time.
A feed inlet is formed in the upper part of a front fraction rectifying tower 1.1, an outlet at the top of the front fraction rectifying tower 1.1 is communicated with an inlet of a front fraction condenser 1.2 through a pipeline, a liquid outlet of the front fraction condenser 1.2 is communicated with an inlet of a front fraction reflux ratio controller 1.3 through a second pipeline 11, a first outlet of the front fraction reflux ratio controller 1.3 is communicated with the top of the front fraction rectifying tower 1.1 through a pipeline, a second outlet of the front fraction reflux ratio controller 1.3 is communicated with an inlet of a front fraction receiving tank 1.4 through a pipeline, an outlet of the front fraction receiving tank 1.4 is communicated with an inlet of a front fraction temporary storage tank 2 through a pipeline, an outlet of the front fraction temporary storage tank 2 is communicated with an inlet of a front fraction transfer pump 12 through a pipeline, and an outlet of the front fraction transfer pump 12 is connected with a front fraction treatment section through a pipeline;
the gas outlet of the front cut condenser 1.2 is communicated with the inlet of the front cut vacuum cold trap 3 through a pipeline, the liquid outlet of the front cut vacuum cold trap 3 is communicated with the second pipeline 11, the gas outlet of the front cut vacuum cold trap 3 is communicated with the first vacuum system 4 through a pipeline, the first vacuum system 4 comprises a first vacuum buffer tank 4.1 and a front cut vacuum pump 4.2, and the front cut vacuum pump 4.2 uses any one of a water ring vacuum pump, a piston vacuum pump or a roots vacuum pump, and specifically comprises the following steps: a gas outlet of the front fraction vacuum cold trap 3 is communicated with an inlet of a first vacuum buffer tank 4.1 through a pipeline, an outlet of the first vacuum buffer tank 4.1 is communicated with an inlet of a front fraction vacuum pump 4.2 through a pipeline, and an outlet of the front fraction vacuum pump 4.2 is communicated with an inlet of a first emptying pipeline 13;
the bottom outlet of the front fraction rectifying tower 1.1 is communicated with the inlet of a front fraction tower circulating pump 1.6 through a pipeline, the outlet of the front fraction tower circulating pump 1.6 is communicated with the top inlet of a front fraction evaporator 1.5 through a first pipeline 14, and the bottom outlet of the front fraction evaporator 1.5 is communicated with the lower part of the front fraction rectifying tower 1.1 through a pipeline;
an inlet of the product rectifying tower 5.1 is communicated with a first pipeline 14 through a mother liquid discharge pipeline 15, an outlet at the top of the product rectifying tower 5.1 is communicated with an inlet of a product condenser 5.2 through a pipeline, a liquid outlet of the product condenser 5.2 is communicated with an inlet of a product reflux ratio controller 5.3 through a fourth pipeline 16, a first outlet of the product reflux ratio controller 5.3 is communicated with the top of the product rectifying tower 5.1 through a pipeline, a second outlet of the product reflux ratio controller 5.3 is communicated with an inlet of a product receiving tank 5.4 through a pipeline, an outlet of the product receiving tank 5.4 is communicated with an inlet of a product temporary storage tank 6 through a pipeline, an outlet of the product temporary storage tank 6 is communicated with an inlet of a product transfer pump 17 through a pipeline, and an outlet of the product transfer pump 17 is communicated with a product packaging unit 7 through a pipeline;
the product packaging unit 7 comprises a product packaging kettle 7.1, a product packaging pump 7.2 and a packaging barrel 7.3, wherein the outlet of the product transferring pump 17 is communicated with the inlet of the product packaging kettle 7.1 through a pipeline, the outlet of the product packaging kettle 7.1 is communicated with the inlet of the product packaging pump 7.2 through a pipeline, and the outlet of the product packaging pump 7.2 is communicated with the inlet of the packaging barrel 7.3 through a pipeline;
the gas outlet of the product condenser 5.2 is communicated with the inlet of the product vacuum cold trap 8 through a pipeline, the liquid outlet of the product vacuum cold trap 8 is communicated with the fourth pipeline 16, the gas outlet of the product vacuum cold trap 8 is communicated with the second vacuum system 9 through a pipeline, the second vacuum system 9 comprises a second vacuum buffer tank 9.1 and a product vacuum pump 9.2, and the product vacuum pump 9.2 uses any one of a water ring vacuum pump, a piston vacuum pump or a Roots vacuum pump, and specifically comprises: a gas outlet of the product vacuum cold trap 8 is communicated with an inlet of a second vacuum buffer tank 9.1 through a pipeline, an outlet of the second vacuum buffer tank 9.1 is communicated with an inlet of a product vacuum pump 9.2 through a pipeline, and an outlet of the product vacuum pump 9.2 is communicated with an inlet of a second evacuation pipeline 18;
the bottom outlet of the product rectifying tower 5.1 is communicated with the inlet of a product tower circulating pump 5.6 through a pipeline, the outlet of the product tower circulating pump 5.6 is communicated with the top inlet of a product evaporator 5.5 through a third pipeline 19, and the bottom outlet of the product evaporator 5.5 is communicated with the lower part of the product rectifying tower 5.1 through a pipeline;
the inlet of the temporary storage kettle 10 is communicated with a third pipeline 19 through a residual liquid discharge pipeline 20, the outlet of the temporary storage kettle 10 is communicated with the inlet of a kettle residue transfer pump 21 through a pipeline, and the outlet of the kettle residue transfer pump 21 is connected with a kettle residue packaging working section through a pipeline.
The utility model discloses an be equipped with first level sensor 22 in preceding fraction rectifying column 1.1, be equipped with first solenoid valve 23 on mother liquor discharge line 15, first level sensor 22 is connected with controller 24's input electricity, controller 24's output is connected with first solenoid valve 23 electricity, detect the liquid level in preceding fraction rectifying column 1.1 in real time through first level sensor 22 to with signal real-time transmission to controller 24, control the switching of first solenoid valve 23 through controller 24;
the utility model discloses a be equipped with second level sensor 25 in the product rectifying column 5.1, be equipped with second solenoid valve 26 on the raffinate discharge line 20, second level sensor 25 is connected with controller 24's input electricity, controller 24's output is connected with second solenoid valve 26 electricity, liquid level in the product rectifying column 5.1 through second level sensor 25 real-time detection to with signal real-time transmission to controller 24, through the switching of controller 24 control second solenoid valve 26.
The utility model discloses be equipped with preceding fraction rectifying column 1.1 and product rectifying column 5.1, preceding fraction rectifying column 1.1 is used for separating the low boiling impurity in the amino glycerine crude (with 1,3-diamino-2-propanol and serinol's mixture as the owner), when low boiling impurity was extracted, the high boiling composition in preceding fraction rectifying column 1.1 (with amino glycerine and glycerine as the owner) can get into in product rectifying column 5.1 through first pipeline 14, mother liquor discharge pipeline 15, product rectifying column 5.1 is used for separating the amino glycerine product in the amino glycerine crude, when amino glycerine product was extracted, glycerine in product rectifying column 5.1 passes through third pipeline 19 as the cauldron residual, raffinate discharge pipeline 20 gets into in cauldron residual storage 10, whole rectification process is the serialization process, need not to wait for after preceding fraction is extracted completely, carry out the product again, and simultaneously, repeated intensification when having avoided batch rectification, the cooling process, the time saving rectification efficiency, promote rectification efficiency, increase rectification efficiency; and the first liquid level sensor 22 in the front-cut rectifying tower 1.1 is interlocked with the first electromagnetic valve 23, and the second liquid level sensor 25 in the product rectifying tower 5.1 is interlocked with the second electromagnetic valve 26, so that the accurate control of the liquid levels in the front-cut rectifying tower 1.1 and the product rectifying tower 5.1 is realized, the automatic production is carried out, the personnel operation is reduced, and the rectifying efficiency is further improved.
The working principle is as follows: starting a front fraction vacuum pump 4.2, introducing the amino glycerol crude product steam from the crude distillation process into a front fraction rectifying tower 1.1 from a feed inlet of the front fraction rectifying tower 1.1, raising low-boiling impurities (light components: a mixture of 1,3-diamino-2-propanol and serinol) in the amino glycerol crude product to the top of the front fraction rectifying tower 1.1 in the form of steam, entering a front fraction condenser 1.2 from a top outlet of the front fraction rectifying tower 1.1, condensing the light component steam into light component liquid through the front fraction condenser 1.2, discharging the light component liquid from a liquid outlet of the front fraction condenser 1.2, entering a front fraction reflux ratio controller 1.3, automatically adjusting the reflux ratio to be 20 (reflux extraction: reflux extraction: reflux), returning a part of the light component liquid from a first outlet of the front fraction reflux ratio controller 1.3 to a product rectifying tower 5.1 through a pipeline, and continuously transferring the light component liquid from a front fraction reflux ratio controller 1.3 to a front fraction tank for receiving the light fraction from a front fraction tank, and processing the front fraction in a front fraction temporary storage tank 1.2, and continuously transferring the front fraction to a front fraction storage tank through a front fraction storage tank 4.12;
a small amount of light component steam overflows from a gas outlet of a front fraction condenser 1.2 and enters a front fraction vacuum cold trap 3 through a pipeline, easily condensed steam is trapped by the front fraction vacuum cold trap 3 to form liquid, the light component liquid enters a second pipeline 11 through a liquid outlet of the front fraction vacuum cold trap 3 and flows back to a front fraction reflux ratio controller 1.3 through the second pipeline 11, non-condensable gas in the front fraction vacuum cold trap 3 enters a first vacuum buffer tank 4.1 through a gas outlet of the front fraction vacuum cold trap 3, and the non-condensable gas in the first vacuum buffer tank 4.1 enters a first emptying pipeline 13 through a front fraction vacuum pump 4.2 to be emptied;
on the other hand, high boiling point components (heavy components: mainly comprising amino glycerin and glycerin) in the crude amino glycerin are left in the front cut rectifying tower 1.1 in a liquid form, the heavy components in the front cut rectifying tower 1.1 are injected into the front cut evaporator 1.5 from an inlet at the top of the front cut evaporator 1.5 through a front cut tower circulating pump 1.6 from an outlet at the bottom of the front cut rectifying tower 1.1, the evaporation gas in the front cut evaporator 1.5 is mixed with the heavy components, the mixture flows back into the front cut rectifying tower 1.1 from an outlet at the bottom of the front cut evaporator 1.5, the heavy component liquid in the front cut rectifying tower 1.1 is continuously circulated and refluxed into the front cut rectifying tower 1.1 through the front cut tower circulating pump 1.6 and the front cut evaporator 1.5 to be accumulated in the front cut rectifying tower 1.1, when the liquid level of the heavy component liquid in the front cut rectifying tower 1.1 reaches a set maximum liquid level, the first liquid level sensor 22 transmits a signal to the controller 24, the controller 24 controls the first electromagnetic valve 23 to be opened, and the heavy component liquid in the front cut rectifying tower 1.1 enters the first liquid pipeline 14 and the heavy component liquid in the first cut rectifying tower 1.5.
Starting a product vacuum pump 9.2, allowing the amino glycerol in the heavy components to rise to the top of a product rectifying tower 5.1 in a vapor form, allowing the amino glycerol vapor to enter a product condenser 5.2 from an outlet at the top of the product rectifying tower 5.1, condensing the amino glycerol vapor by the product condenser 5.2 to become amino glycerol liquid, discharging the amino glycerol liquid from a liquid outlet of the product condenser 5.2, allowing the amino glycerol liquid to enter a product reflux ratio controller 5.3, automatically adjusting the reflux ratio to be 10 (extraction: reflux) by the product reflux ratio controller 5.3, allowing a part of the amino glycerol liquid to flow back into a product rectifying tower 5.1 from a first outlet of the product reflux ratio controller 5.3 through a pipeline, allowing the other part of the amino glycerol liquid as a finished product to enter a product receiving tank 5.4 from a second outlet of the product reflux ratio controller 5.3 through a pipeline, allowing the amino glycerol liquid in the product receiving tank 5.4 to enter a product temporary storage tank 6 through a pipeline, conveying the amino glycerol liquid in the product temporary storage tank 6 into a product packaging unit 7.1 of a product packaging barrel 7 through a product transfer pump 17, and conveying the amino glycerol liquid in the product packaging barrel 7.1 to form a product packaging barrel 7.2 and a product package barrel 3;
a small amount of amino glycerol steam overflows from a gas outlet of a product condenser 5.2 and enters a product vacuum cold trap 8 through a pipeline, the amino glycerol steam is trapped by the product vacuum cold trap 8 to form liquid, the amino glycerol liquid enters a fourth pipeline 16 through a liquid outlet of the product vacuum cold trap 8 and flows back to a product reflux ratio controller 5.3 through the fourth pipeline 16, non-condensable gas in the product vacuum cold trap 8 enters a second vacuum buffer tank 9.1 through a gas outlet of the product vacuum cold trap 8, and the non-condensable gas in the second vacuum buffer tank 9.1 enters a second evacuation pipeline 18 through a product vacuum pump 9.2 to be evacuated;
on the other hand, glycerin in the heavy components is left in the product rectifying tower 5.1 in a liquid form, glycerin in the product rectifying tower 5.1 is pumped into the product evaporator 5.5 from an outlet at the bottom of the product rectifying tower 5.1 through a product tower circulating pump 5.6 from an inlet at the top of the product evaporator 5.5, evaporation gas in the product evaporator 5.5 is mixed with the glycerin, the mixture flows back to the product rectifying tower 5.1 from an outlet at the bottom of the product evaporator 5.5, the glycerin in the product rectifying tower 5.1 continuously and circularly flows back to the product rectifying tower 5.1 through the product tower circulating pump 5.6 and the product evaporator 5.5 to be accumulated in the product rectifying tower 5.1, when the liquid level of the glycerin in the product rectifying tower 5.1 reaches a set maximum liquid level, the second liquid level sensor 25 transmits a signal to the controller 24, the controller 24 controls the second electromagnetic valve 26 to be opened, the glycerin in the product rectifying tower 5.1 enters the temporary storage kettle 10 through the third pipeline 19 and the residual liquid level discharge pipeline 20, and the glycerin in the temporary storage kettle 10 is conveyed to residual liquid package through the residual material transfer kettle 21.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the present invention.
Claims (8)
1. An amino glycerol continuous rectification system is characterized by comprising a front fraction separation unit, a front fraction temporary storage tank, a product rectification unit, a product temporary storage tank, a product packaging unit and a kettle residue temporary storage kettle;
an outlet of a front fraction receiving tank of the front fraction separation unit is communicated with an inlet of the front fraction temporary storage tank, and a first pipeline of the front fraction separation unit is communicated with an inlet of a product rectifying tower of the product rectifying unit through a mother liquid discharge pipeline; the export of the product receiving tank of product rectification unit with the import intercommunication of product jar of keeping in, the export of product jar of keeping in with the product packaging unit passes through the product and changes the material pump and link to each other, the third pipeline of product rectification unit with the import of the incomplete cauldron of keeping in passes through raffinate discharge pipeline intercommunication.
2. The continuous rectification system of the amino glycerol according to the claim 1, wherein the front cut separation unit comprises a front cut rectification tower, a front cut condenser, a front cut reflux ratio controller, the front cut receiving tank and a front cut evaporator;
a top outlet of the front fraction rectifying tower is communicated with an inlet of the front fraction condenser, a liquid outlet of the front fraction condenser is communicated with an inlet of the front fraction reflux ratio controller through a second pipeline, a first outlet of the front fraction reflux ratio controller is communicated with the top of the front fraction rectifying tower, and a second outlet of the front fraction reflux ratio controller is communicated with an inlet of the front fraction receiving tank;
the bottom outlet of the front fraction rectifying tower is communicated with the inlet of a front fraction tower circulating pump, the outlet of the front fraction tower circulating pump is communicated with the top inlet of the front fraction evaporator through the first pipeline, and the bottom outlet of the front fraction evaporator is communicated with the lower part of the front fraction rectifying tower.
3. The continuous rectification system of amino glycerol according to claim 1, wherein the product rectification unit comprises the product rectification tower, a product condenser, a product reflux ratio controller, the product receiving tank and a product evaporator;
the top outlet of the product rectifying tower is communicated with the inlet of the product condenser, the liquid outlet of the product condenser is communicated with the inlet of the product reflux ratio controller through a fourth pipeline, the first outlet of the product reflux ratio controller is communicated with the top of the product rectifying tower, and the second outlet of the product reflux ratio controller is communicated with the inlet of the product receiving tank;
and the bottom outlet of the product rectifying tower is communicated with the inlet of a product tower circulating pump, the outlet of the product tower circulating pump is communicated with the top inlet of the product evaporator through a third pipeline, and the bottom outlet of the product evaporator is communicated with the lower part of the product rectifying tower.
4. The continuous rectification system of amino glycerol according to claim 2, further comprising a front-cut vacuum cold trap and a first vacuum system, wherein the first vacuum system comprises a first vacuum buffer tank and a front-cut vacuum pump;
the gas outlet of the front fraction condenser is communicated with the inlet of the front fraction vacuum cold hydrazine, the liquid outlet of the front fraction vacuum cold hydrazine is communicated with the second pipeline, the gas outlet of the front fraction vacuum cold hydrazine is communicated with the inlet of the first vacuum buffer tank, the outlet of the first vacuum buffer tank is communicated with the inlet of the front fraction vacuum pump, and the outlet of the front fraction vacuum pump is communicated with the inlet of the first emptying pipeline.
5. The continuous rectification system of amino glycerol according to claim 3, further comprising a product vacuum cold trap and a second vacuum system, wherein the second vacuum system comprises a second vacuum buffer tank and a product vacuum pump;
the gas outlet of the product condenser is communicated with the inlet of the product vacuum cold hydrazine, the liquid outlet of the product vacuum cold hydrazine is communicated with the fourth pipeline, the gas outlet of the product vacuum cold hydrazine is communicated with the inlet of the second vacuum buffer tank, the outlet of the second vacuum buffer tank is communicated with the inlet of the product vacuum pump, and the outlet of the product vacuum pump is communicated with the inlet of the second emptying pipeline.
6. The continuous rectification system of amino glycerol according to claim 1, wherein the product packaging unit comprises a product packaging kettle, a product packaging pump and a packaging barrel; the outlet of the product transferring pump is communicated with the inlet of the product packaging kettle, the outlet of the product packaging kettle is communicated with the inlet of the product packaging pump, and the outlet of the product packaging pump is communicated with the inlet of the packaging barrel.
7. The continuous rectification system of amino glycerol according to claim 2, wherein a first liquid level sensor is arranged in the front cut rectification tower, a first electromagnetic valve is arranged on the mother liquor discharge pipeline, the first liquid level sensor is electrically connected with the input end of a controller, and the output end of the controller is electrically connected with the first electromagnetic valve.
8. The continuous rectification system of amino glycerol according to claim 3, characterized in that a second liquid level sensor is arranged in the product rectification tower, a second electromagnetic valve is arranged on the raffinate discharge pipeline, the second liquid level sensor is electrically connected with the input end of the controller, and the output end of the controller is electrically connected with the second electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223314961.9U CN218740289U (en) | 2022-12-09 | 2022-12-09 | Amino glycerine serialization rectification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223314961.9U CN218740289U (en) | 2022-12-09 | 2022-12-09 | Amino glycerine serialization rectification system |
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| Publication Number | Publication Date |
|---|---|
| CN218740289U true CN218740289U (en) | 2023-03-28 |
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|---|---|---|---|
| CN202223314961.9U Active CN218740289U (en) | 2022-12-09 | 2022-12-09 | Amino glycerine serialization rectification system |
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| Country | Link |
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| CN (1) | CN218740289U (en) |
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