CN215026105U - System for separating 1, 5-pentanediamine - Google Patents
System for separating 1, 5-pentanediamine Download PDFInfo
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- CN215026105U CN215026105U CN202120796792.3U CN202120796792U CN215026105U CN 215026105 U CN215026105 U CN 215026105U CN 202120796792 U CN202120796792 U CN 202120796792U CN 215026105 U CN215026105 U CN 215026105U
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Abstract
The utility model provides a system for separating 1, 5-pentanediamine, which comprises a steam generating device and a refining device; the steam generating device is used for heating a raw material liquid containing 1, 5-pentanediamine to obtain steam containing 1, 5-pentanediamine; the refining device is used for refining the liquid obtained after the steam containing the 1, 5-pentanediamine is condensed to obtain the 1, 5-pentanediamine; the steam generating device comprises a conveyor belt, a driving part and a temperature control part; the conveyer belt is used for bearing the raw material liquid containing the 1, 5-pentanediamine, the temperature control component is used for heating the raw material liquid on the conveyer belt, and the driving component is used for driving the conveyer belt to rotate circularly. The utility model discloses a system of separation 1, 5-pentanediamine of embodiment, equipment degree of automation is high, it is high to handle material load, can obtain high-purity 1, 5-pentanediamine product, realizes the continuous separation of 1, 5-pentanediamine.
Description
Technical Field
The utility model relates to a separation system specifically is a system of separation 1, 5-pentanediamine.
Background
1, 5-pentanediamine (Diaminopentane; DN5, pentanediamine for short), also called cadaverine, has wide application in agriculture, medicine and industry. The conventional extraction method of 1, 5-pentanediamine produced by a biological method needs to separate the 1, 5-pentanediamine from an aqueous phase, and because the aqueous phase also contains sugar, protein, metabolic byproducts and inorganic salt impurities caused by a biotransformation process, if the 1, 5-pentanediamine is extracted by conventional distillation, the viscosity of the system is increased in the later stage of the distillation, so that the distillation efficiency is reduced.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a system for separating 1, 5-pentanediamine, which comprises a steam generating device and a refining device; the steam generating device is used for heating a raw material liquid containing 1, 5-pentanediamine to obtain steam containing 1, 5-pentanediamine; the refining device is used for refining the liquid obtained after the steam containing the 1, 5-pentanediamine is condensed to obtain the 1, 5-pentanediamine; the steam generating device comprises a conveyor belt, a driving part and a temperature control part; the conveyer belt is used for bearing the raw material liquid containing the 1, 5-pentanediamine, the temperature control component is used for heating the raw material liquid on the conveyer belt, and the driving component is used for driving the conveyer belt to rotate circularly.
According to an embodiment of the present invention, the steam generating device includes a material distributing part for disposing the raw material liquid containing 1, 5-pentanediamine on the conveyor belt;
and/or the refining device comprises one or more of a rectifying device, a distilling device and an evaporating device;
and/or the temperature control part comprises a first temperature control part, and the first temperature control part is used for carrying out first heating treatment on the raw material liquid containing the 1, 5-pentanediamine so as to form the steam containing the 1, 5-pentanediamine and the residue containing the residue.
According to an embodiment of the present invention, the driving part includes a first roller and a second roller, and the conveyor belt is sleeved on the first roller and the second roller; the temperature control component is positioned between the first roller and the second roller along the transmission direction of the conveyor belt; and/or the presence of a gas in the gas,
the temperature control component comprises a second temperature control component, and the second temperature control component is used for carrying out second heating treatment on the residue containing the residues.
According to the utility model discloses an embodiment, steam generation device is including smashing the part, smash the part be used for with the residue is smashed the processing, smash the part set up in the outside of second gyro wheel.
According to the utility model discloses an embodiment, steam generation device is including the shell that has accommodation space, the conveyer belt drive unit accuse temperature part is located in the accommodation space of shell be provided with the heat preservation on the shell.
According to an embodiment of the present invention, the system for separating 1, 5-pentanediamine comprises a condensing unit, the condensing unit is connected with the vapor generating device and the refining device respectively; and/or the presence of a gas in the gas,
the vapor generating device includes a vacuum component.
According to the utility model discloses an embodiment, condensing equipment is the heat exchanger.
According to an embodiment of the present invention, the system for separating 1, 5-pentanediamine comprises a feeding tank, the feeding tank comprises a stirring component and/or a second temperature control component, and the feeding tank is connected to the vapor generation device through a feeding pump.
According to an embodiment of the present invention, the system for separating 1, 5-pentanediamine comprises a concentration tank, and the feed tank is connected to the concentration tank and the vapor generation device, respectively.
According to an embodiment of the present invention, the steam generating device is a belt dryer.
The utility model discloses a system of separation 1, 5-pentanediamine of embodiment, equipment degree of automation is high, it is high to handle material load, can obtain high-purity 1, 5-pentanediamine product, realizes the continuous separation of 1, 5-pentanediamine.
Drawings
The various objects, features and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the invention, when considered in conjunction with the accompanying drawings. The drawings are merely exemplary of the invention and are not necessarily drawn to scale.
FIG. 1 is a schematic view showing the structure of a system for separating 1, 5-pentanediamine according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments that embody features and advantages of the invention are described in detail below. It is to be understood that the invention is capable of other and different embodiments and its several details are capable of modification without departing from the scope of the invention, and that the description and drawings are to be regarded as illustrative in nature and not as restrictive.
As shown in fig. 1, one embodiment of the present invention provides a system for separating 1, 5-pentanediamine, comprising:
a vapor generation device for obtaining a vapor containing 1, 5-pentanediamine by heating a raw material liquid containing 1, 5-pentanediamine; and
a refining device 20 for refining the liquid obtained by condensing the vapor to obtain 1, 5-pentamethylenediamine;
the steam generating device comprises a conveyor belt 11, a driving part and a temperature control part; conveyer belt 11 is used for bearing raw materials liquid, and temperature control unit is used for carrying out heat treatment to the raw materials liquid on the conveyer belt 11, and drive unit is used for driving conveyer belt 11 and carries out the circulation.
According to some embodiments of the present invention, the refining apparatus 20 comprises one or more of a rectification apparatus, a distillation apparatus, and an evaporation apparatus.
In one embodiment, the temperature control unit includes a first temperature control unit 13, and the first temperature control unit 13 acts on the conveyor belt 11 to heat the raw material liquid on the conveyor belt 11.
In the system for separating 1, 5-pentanediamine according to an embodiment of the present invention, during operation, after the raw material liquid on the conveyor belt 11 is heated by the temperature control component 13, the 1, 5-pentanediamine and water therein are evaporated into gaseous state, and the residual residue can automatically fall off from the winding end of the endless conveyor belt 11; meanwhile, along with the reciprocating rotation of the conveyor belt 11, the raw material liquid can be continuously arranged on the conveyor belt 11 for heating treatment to continuously obtain steam containing 1, 5-pentanediamine, and the steam is continuously refined by a refining device to obtain a 1, 5-pentanediamine product, so that the continuous separation of the 1, 5-pentanediamine is realized.
In one embodiment, the driving means includes a first roller 12a, a second roller 12b and a power source, which may be, for example, a motor. The conveyor belt 11 is sleeved on the first roller 12a and the second roller 12 b.
In one embodiment, the temperature control member is located between the first roller 12a and the second roller 12 b.
In one embodiment, the steam generating device includes a material distributing member 10 for disposing the raw material liquid on a conveyor belt 11. For example, the raw material liquid may be distributed in a thin layer on the conveyor belt 11 by the distributing means 10.
In one embodiment, the material distribution member 10 may be a material distribution pipe.
In one embodiment, the material distribution member 10 is disposed adjacent to the first roller 12a and above the conveyor belt 11.
In one embodiment, the temperature control part comprises a first temperature control part 13 and a second temperature control part 14, the first temperature control part 13 is used for carrying out a first heating treatment on the raw material liquid so as to form steam containing 1, 5-pentanediamine and residue remained on the conveyor belt 11; the second temperature control member 14 is used for performing a second heat treatment on the remaining residue.
In one embodiment, the first temperature-controlled member 13 and the second temperature-controlled member 14 act on the conveyor belt 11 to heat the raw material liquid and/or the residual residue on the conveyor belt 11.
In one embodiment, the conveyor belt 11 includes a first surface for carrying the raw material liquid and a second surface opposite to the first surface, and the material distribution unit 10 may be located above the first surface; the first temperature control member 13 and the second temperature control member 14 act on the second surface of the conveyor belt 11, that is, the first temperature control member 13 and the second temperature control member 14 are located below the conveyor belt 11.
In one embodiment, the number of the first temperature control member 13 and the second temperature control member 14 can be one or more, such as 2, 3, 4, 6 or 7.
In one embodiment, the first temperature control member 13 and the second temperature control member 14 can be metal heating plates.
In one embodiment, the heating manner of the metal heating plate includes one or more of steam heating, heat transfer oil heating, and electric heating.
In one embodiment, the conveyor belt 11 is a crawler belt.
In one embodiment, the material of the conveyor belt 11 may be glass fiber reinforced teflon coated material.
In one embodiment, the number of the conveyor belts 11 may be one or more layers, such as 3 to 13 layers.
In one embodiment, the first temperature control member 13 and/or the second temperature control member 14 can be slidably attached to the second surface of the conveyor belt 11, that is, the positions of the first temperature control member 13 and the second temperature control member 14 are not changed along with the cyclic rotation of the conveyor belt 11.
In one embodiment, the first temperature-control member 13 and the second temperature-control member 14 are located between the first roller 12a and the second roller 12b along the driving direction of the conveyor belt 11.
In one embodiment, the first temperature-controlled member 13 is adjacent to the first roller 12a, the second temperature-controlled member 14 is adjacent to the second roller 12b, and the residue remaining on the conveyor belt 11 can be separated from the conveyor belt 11 through the winding end of the second roller 12 b.
In one embodiment, the vapor generating device includes a collection device, and the residue that falls off the conveyor belt 11 can fall directly into the collection device 16.
In one embodiment, the steam generating device may include a breaking-up component 15, so that the large residues on the conveyor belt 11 can be broken up by the breaking-up component 15, and the broken-up residues can fall into the collecting device 16.
In one embodiment, the breaking member 15 may be disposed outside the second roller 12b, i.e., along the transmission direction of the conveyor belt 11, and the breaking member 15 is disposed on a side away from the first roller 12 a.
In one embodiment, the crushing member 15 may be, for example, a screw conveyor, a tooth crusher, or the like.
In an embodiment, the steam generating device may include a scraper (not shown) acting on the first surface of the conveyor belt 11 for scraping off residues on the first surface of the conveyor belt 11 to reduce solid residues on the first surface, thereby facilitating the subsequent cycle of "cloth → evaporation → deslagging".
In one embodiment, the scraper blade is applied to the first surface of the conveyor belt 11 adjacent to the second roller 12 b.
In one embodiment, the collection device 16 may be, for example, a storage tank or a trough with a shredding function.
In one embodiment, the collection device 16 is a conveyor tank with a shredding function, and the residue is shredded to an appropriate particle size in the collection device 16 and then conveyed out of the steam generating device.
In one embodiment, the collecting device 16 is adjacent to the second roller 12b and can be located below the second roller 12b, so that the residue (or the broken residue) falling off from the winding end of the second roller 12b directly falls into the collecting device 16.
In one embodiment, the steam generating device comprises a housing having a receiving space, and the conveyor belt 11, the driving part, the temperature control part, the crushing part 15 and the collecting device 16 are all positioned in the housing.
In one embodiment, the steam generating device includes an insulating layer 17, and the insulating layer 17 is provided in the casing so that the steam containing 1, 5-pentanediamine can be maintained in a gaseous state inside the casing, thereby further improving the yield of 1, 5-pentanediamine.
In one embodiment, the insulating layer 17 may be, for example, a steam jacket layer, a circulating water jacket layer, or a heat conducting oil jacket layer.
In one embodiment, the insulating layer 17 contains a heating element, such as an electrical heating element.
In one embodiment, the insulating layer 17 may be disposed inside the housing or may be disposed outside the housing.
In one embodiment, the vapor generation device includes a vacuum member 18 that depressurizes the space within the enclosure to achieve a desired vacuum environment.
In one embodiment, the condensing unit 30 is connected to the steam generating unit, and the condensing unit 30 is located as conveniently as possible to collect the vapor containing 1, 5-pentanediamine. For example, the 1, 5-pentanediamine vapor produced tends to be concentrated in the upper half of the vapor-generating device cavity due to its low density, and preferably, the condensing means 30 is connected to the upper half of the vapor-generating device.
In one embodiment, the vacuum component 18 may be disposed outside of the vapor-generating device housing, which may be a vacuum pump.
In one embodiment, the vapor generation device is connected to a refining device 20, and the refining device 20 may be, for example, a rectifying column.
In one embodiment, the system for separating 1, 5-pentanediamine comprises a condensing device 30, and the condensing device 30 is connected with a vapor generating device and a refining device 20 respectively, so as to condense vapor containing 1, 5-pentanediamine into liquid and then carry out refining treatment.
In one embodiment, the condensing device 30 may be a heat exchanger.
In one embodiment, the vacuum component 18 is connected to the interior of the housing of the vapor generation device by a condensing device 30.
In one embodiment, the system for separating 1, 5-pentanediamine comprises a feed tank 40, wherein the solution system containing 1, 5-pentanediamine salt can be alkalized in the feed tank 40 to form a raw material solution containing 1, 5-pentanediamine; wherein the alkalization treatment refers to the reaction of a salt with a base.
In one embodiment, the feed tank 40 includes a stirring unit and/or a third temperature control unit, and the feed liquid may be preheated by the third temperature control unit.
In one embodiment, the system for separating 1, 5-pentanediamine comprises a feed pump 50, wherein the feed pump 50 is connected to the feed tank 40 and the distribution member 10 of the vapor generation device, respectively, to deliver the raw material liquid to the distribution member 10.
In one embodiment, the system for separating 1, 5-pentanediamine comprises a concentration tank (not shown), which may be located upstream of the feed tank 40, i.e., the concentration tank, the feed tank 40, and the vapor generation device are connected in series.
In one embodiment, the steam generating device may be a belt dryer, and further may be a vacuum belt dryer. Wherein, the above-mentioned limitations regarding the structure of the steam generating device can be applied to the belt dryer.
In one embodiment, the belt dryer may be an existing device.
In one embodiment, the raw material liquid is a solution system containing 1, 5-pentanediamine.
In one embodiment, the feed solution comprises 1, 5-pentanediamine and water.
In one embodiment, the 1, 5-pentanediamine content in the raw material liquid is 8% to 75% by mass, for example, 10%, 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55%, 60%, 65%, 70%, or the like.
In one embodiment, the raw material liquid contains an alkali metal salt, and the mass of the alkali metal salt is 30 to 80% of the mass of the solid matter in the raw material liquid, and further 40 to 60%. The alkali metal is mainly derived from alkaline substances used in the process of preparing the alkalization liquid of the 1, 5-pentanediamine.
In one embodiment, the solid content (solid content) in the raw material liquid is 10 to 80% by mass, and more preferably 20 to 70% by mass, for example, 30%, 40%, 50% or the like.
The solid content refers to the mass content of residue left after the raw material liquid is treated by a steam generation device in the raw material liquid.
In one embodiment, the density of the raw material liquid is 1.02 to 1.25g/cm3。
In one embodiment, the pH of the feedstock solution is > 12.3.
In one embodiment, the raw material liquid is an alkalizing liquid containing 1, 5-pentanediamine.
In one embodiment, the alkalizing solution containing 1, 5-pentanediamine is prepared by the process comprising: an alkaline substance is added to the solution system containing the 1, 5-pentamethylenediamine salt (alkaline treatment) in which the 1, 5-pentamethylenediamine salt reacts with the alkaline substance to produce 1, 5-pentamethylenediamine, thereby forming a solution system containing free 1, 5-pentamethylenediamine (alkalized solution containing 1, 5-pentamethylenediamine).
In one embodiment, the basic substance may include, but is not limited to, one or more of alkali metal oxides/hydroxides, alkaline earth metal oxides/hydroxides, and corresponding basic salts (e.g., sodium phosphate, potassium phosphate, sodium carbonate, potassium carbonate, etc.).
In one embodiment, the solution system containing the 1, 5-pentamethylene diamine salt comprises a fermentation broth or an enzyme conversion broth containing the 1, 5-pentamethylene diamine salt.
The utility model discloses to containing the enzyme conversion liquid of 1, 5-pentanediamine salt or the concrete preparation method of direct fermentation preparation 1, 5-pentanediamine is not specially limited, and ordinary technical personnel in this field can decide to select specific raw materials according to prior art, confirms the technological parameter of specific enzyme conversion process to obtain the aqueous solution that contains 1, 5-pentanediamine salt.
In one embodiment, the solution containing 1, 5-pentanediamine salt is an enzyme conversion solution of 1, 5-pentanediamine salt, which can be obtained by reacting a lysine salt solution under the action of Lysine Decarboxylase (LDC). The lysine salt may be inorganic salt or organic salt of lysine, such as lysine hydrochloride and lysine sulfate.
In one embodiment, the solution system containing the 1, 5-pentamethylene diamine salt is a fermentation broth of the 1, 5-pentamethylene diamine salt, which is obtained by the following method: by means of gene technology, the expression of lysine decarboxylase is up-regulated or recombinant expressed in the strain capable of producing lysine, and the produced lysine can be synchronously converted into pentanediamine in the fermentation process, so that the fermentation liquor containing 1, 5-pentanediamine salt is directly obtained. The utility model has no special requirements for recombinant bacteria, as long as 1, 5-pentanediamine can be obtained.
In one embodiment, the feed temperature of the raw material liquid to the steam generator is 40 to 130 ℃, such as 55 ℃, 60 ℃, 65 ℃, 70 ℃, 75 ℃, 80 ℃, 85 ℃, 90 ℃, 95 ℃, 100 ℃, 110 ℃, 115 ℃, 120 ℃, 125 ℃ and the like.
In one embodiment, the raw material liquid is disposed on the conveyor belt 11 in the form of a thin layer, and then subjected to a heating treatment.
In one embodiment, the material may be distributed by a reciprocating spray and/or a thin layer coating to form a thin layer of material on the conveyor belt 11.
In one embodiment, the thickness of the thin layer may be 0.5 to 30mm, and further may be 2 to 20mm, for example, 1mm, 2mm, 8mm, 10mm, 12mm, 15mm, 23mm, 25mm, 28mm, and the like.
In one embodiment, the heating temperature of the first temperature control member 13 may be 105 to 250 ℃, and further 135 to 240 ℃, for example, 110 ℃, 120 ℃, 130 ℃, 140 ℃, 150 ℃, 160 ℃, 170 ℃, 180 ℃, 190 ℃, 210 ℃, 220 ℃, 240 ℃, 245 ℃ and the like.
In one embodiment, the degree of vacuum of the vapor generation device is 10Pa to 10KPa, further 50Pa to 3000Pa, and further 50Pa to 1000Pa, for example, 20Pa, 50Pa, 80Pa, 100Pa, 200Pa, 500Pa, 800Pa, 1KPa, 2KPa, 5KPa, 8KPa, and the like.
In one embodiment, the vapor comprising 1, 5-pentanediamine comprises 1, 5-pentanediamine gas and water vapor.
In one embodiment, the residence time or the first heat treatment time of the material on the conveyor belt 11 above the first temperature control member 13 is 20-300 min, and further 30-120 min, such as 50mm, 60mm, 80mm, 100mm, 150mm, 180mm, 200mm, 250mm, etc.
In one embodiment, the process of separating the 1, 5-pentanediamine further includes heating the residue including the residue by the second temperature control member 14, wherein the heating temperature of the second temperature control member 14 may be 50 to 180 ℃, and further 50 to 150 ℃, for example, 60 ℃, 70 ℃, 80 ℃, 90 ℃, 100 ℃, 110 ℃, 120 ℃, 140 ℃, 160 ℃, 170 ℃, and the like.
In one embodiment, the heating temperature of the first temperature control member 13 is higher than the heating temperature of the second temperature control member 14.
In one embodiment, the material on the surface of the conveyor belt 11 is laid to have a suitable thickness, which not only improves the evaporation efficiency, but also does not require a high evaporation temperature.
In one embodiment, the raw material liquid containing 1, 5-pentanediamine is fed with a low solid content, and the evaporation speed is high under the condition of paving the same thickness, so that the content of the residual 1, 5-pentanediamine in the solid slag is relatively increased.
In one embodiment, the residue left on the conveyor belt 11 after the first heat treatment is completed may be peeled off by itself at the winding end of the conveyor belt 11, or may be peeled off by itself at the winding end of the conveyor belt 11 after the second heat treatment.
The utility model discloses an embodiment's system's of separation 1, 5-pentanediamine operation process includes:
adding a solution system containing 1, 5-pentamethylene diamine salt (concentrated or not) and alkali liquor into a feeding tank 40, forming a raw material solution containing free 1, 5-pentamethylene diamine through alkalization treatment in the feeding tank 40, and preheating to 50-100 ℃;
the raw material liquid is conveyed to a material distribution part 10 of the steam generation device through a feeding pump 50, a vacuum environment is formed inside a shell of the steam generation device through a vacuum part 18, and a thin layer material is formed on a conveying belt 11 through the material distribution part 10;
the conveyor belt 11 heats the raw material liquid on the conveyor belt under vacuum conditions by contacting with the first temperature control part 13 to generate a gas mixture containing 1, 5-pentanediamine and water vapor, the gas mixture is discharged out of the vapor generation device under the action of the vacuum part 18, and condensate containing 1, 5-pentanediamine is formed by the condensation device 30;
treating the condensate containing the 1, 5-pentanediamine by a refining device 20 to obtain a pure product of the pentanediamine;
the materials left on the conveyor belt 11 after being heated by the first temperature control part 13 enter the upper part of the second temperature control part 14 along with the running of the conveyor belt 11, and the conveyor belt 11 makes the materials on the conveyor belt perform second heating treatment through the contact with the second temperature control part 14; the second heat-treated material is continuously moved to the winding end along with the conveyor belt 11 to be peeled off automatically, or the large material is smashed through the reciprocating smashing component 15, and the smashed material falls into a collecting device 16 with a smashing function.
Since the heating temperature of the second temperature control member 14 is lower than that of the first temperature control member 13, the temperature of the material heated by the second temperature control member 14 is lower than that of the material heated by the first temperature control member 13.
In one embodiment, the residual amount of 1, 5-pentanediamine in the residual residue discharged from the conveyor belt 11 is not more than 15 wt%, further not more than 8 wt%, further 0.3 to 8 wt%, and further 0.5 to 8 wt%.
In one embodiment, the yield of 1, 5-pentanediamine is 90 wt% or more, and more preferably 95 wt% or more.
The utility model discloses a system of separation 1, 5-pentanediamine of embodiment, equipment operating power is little, area is little, degree of automation is high, and equipment processing material load is high, can handle complicated material, can obtain high-purity 1, 5-pentanediamine product, realizes the continuous separation of 1, 5-pentanediamine.
The utility model discloses a system for separation 1, 5-pentanediamine of embodiment can overcome the distillation difficulty that the (alkalization back) distillation later stage cauldron bottom residue that traditional separator/method exists and lead to make the unsatisfactory problem of 1, 5-pentanediamine yield.
Hereinafter, a system for separating 1, 5-pentanediamine according to an embodiment of the present invention will be further described with reference to the following specific examples and the accompanying drawings. The starting materials used, unless otherwise specified, were commercially available and the test methods used were as follows:
the detection method of the purity of the pentamethylene diamine and the content of the tetrahydropyridine comprises the following steps: and (3) detecting by using a gas phase normalization method.
Color number: standard platinum-cobalt colorimetric method.
Examples
Preheating alkalized liquid containing 1, 5-pentanediamine (the solid content of the alkalized liquid is 35%, the mass concentration of the 1, 5-pentanediamine in the alkalized liquid is 60%, the density of the alkalized liquid is 1.18, the pH value of the alkalized liquid is 12.8, and the alkali metal salt in the alkalized liquid accounts for 50% of the solid content) in a feeding tank 40 to 100 ℃; the preheated raw material liquid is introduced into the material distribution part 10 through the feed pump 50, and the raw material liquid is continuously paved on the conveying belt 11 in a reciprocating spraying mode to form a thin-layer material, wherein the thickness of the material is 8 mm.
Under the action of the vacuum part 18, a vacuum environment is formed inside the steam generating device. With the movement of the conveyor belt 11, the materials move to the position above the first temperature control part 13, and the conveyor belt 11 is in contact with the first temperature control part 13, so that the materials on the conveyor belt 11 are heated under the vacuum condition to generate steam containing 1, 5-pentanediamine; under the action of the vacuum part 18, the vapor containing 1, 5-pentanediamine exits the vapor generation device, enters the condensation device 30, and is condensed into liquid under the action of the condensation device 30.
And (3) introducing the condensed liquid into a distillation tower for rectification to obtain a 1, 5-pentanediamine product, wherein the test results of the purity, the color number and the tetrahydropyridine content of the obtained 1, 5-pentanediamine product are shown in Table 1. Wherein the temperature of the bottom of the rectifying tower is 120 ℃, the temperature of the top of the rectifying tower is 45 ℃, the pressure of the rectifying tower is-0.09 MPa, the number of theoretical plates is 40, and the reflux ratio of the top of the rectifying tower is 2.
In addition, with the movement of the conveyor belt 11, the residue left on the conveyor belt 11 moves to the upper part of the second temperature control part 14, and the material on the conveyor belt 11 is subjected to second heating treatment at 110 ℃ by the contact of the conveyor belt 11 and the second temperature control part 14. After the second heating treatment, the residues move to the winding end along with the conveyor belt 11, large materials are smashed by the reciprocating smashing component 15 and then fall into the storage tank, then the large materials are conveyed out of the steam generating device, solid particles are obtained, and the test result of the residual quantity of the 1, 5-pentanediamine in the solid particles is shown in table 1.
Wherein, the first temperature control component 13 is heated by heat conducting oil, the heating temperature is 215 ℃, and the vacuum degree in the steam generating device is 400Pa (absolute pressure). The residence time of the material above the first temperature-control member 13 was 90 min.
Table 1 product index test results table
Unless otherwise defined, all terms used in the present invention have the meanings commonly understood by those skilled in the art.
The described embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention, and various other substitutions, changes and modifications may be made by those skilled in the art within the scope of the present invention.
Claims (10)
1. A system for separating 1, 5-pentanediamine, comprising:
a vapor generation device for heating a raw material liquid containing 1, 5-pentanediamine to obtain vapor containing 1, 5-pentanediamine; and
a refining device for refining the liquid obtained by condensing the vapor containing 1, 5-pentanediamine to obtain 1, 5-pentanediamine;
the steam generating device comprises a conveyor belt, a driving part and a temperature control part; the conveyer belt is used for bearing the raw material liquid containing the 1, 5-pentanediamine, the temperature control component is used for heating the raw material liquid on the conveyer belt, and the driving component is used for driving the conveyer belt to rotate circularly.
2. A system for separating 1, 5-pentanediamine according to claim 1, wherein the vapor generating device comprises a cloth member for disposing the raw material liquid containing 1, 5-pentanediamine on the conveyor belt;
and/or the refining device comprises one or more of a rectifying device, a distilling device and an evaporating device;
and/or the temperature control part comprises a first temperature control part, and the first temperature control part is used for carrying out first heating treatment on the raw material liquid containing the 1, 5-pentanediamine so as to form the steam containing the 1, 5-pentanediamine and the residue containing the residue.
3. A system for separating 1, 5-pentanediamine according to claim 2, wherein the driving member comprises a first roller and a second roller, and the conveyor belt is sleeved on the first roller and the second roller; the temperature control component is positioned between the first roller and the second roller along the transmission direction of the conveyor belt; and/or the presence of a gas in the gas,
the temperature control component comprises a second temperature control component, and the second temperature control component is used for carrying out second heating treatment on the residue containing the residues.
4. A system for separating 1, 5-pentanediamine according to claim 3, wherein the vapor generating device comprises a breaking member for breaking the residue, the breaking member being disposed outside the second roller.
5. A system for separating 1, 5-pentanediamine according to claim 1, wherein the vapor generating device comprises a housing having a receiving space, the conveyor belt, the driving part, and the temperature controlling part are located in the receiving space of the housing, and an insulating layer is disposed on the housing.
6. A system for separating 1, 5-pentanediamine according to claim 1, comprising a condensing means, wherein the condensing means is connected to the vapor generating means and the refining means, respectively; and/or, the vapor generating device comprises a vacuum component.
7. A system for separating 1, 5-pentanediamine according to claim 6, wherein the condensing means is a heat exchanger.
8. A system for isolating 1, 5-pentanediamine according to claim 1, comprising a feed tank, the feed tank comprising an agitation component and/or a third temperature control component, the feed tank being connected to the vapor generation unit by a feed pump.
9. A system for the separation of 1, 5-pentanediamine according to claim 7, comprising a concentration tank, wherein the feed tanks are connected to the concentration tank and the vapor generation device, respectively.
10. A system for the separation of 1, 5-pentanediamine according to claim 1, wherein the vapor generating device is a belt dryer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120796792.3U CN215026105U (en) | 2021-04-19 | 2021-04-19 | System for separating 1, 5-pentanediamine |
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| CN202120796792.3U CN215026105U (en) | 2021-04-19 | 2021-04-19 | System for separating 1, 5-pentanediamine |
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