CN213286796U

CN213286796U - Uniform heating mechanism for preparing tetramethyl hexanediamine

Info

Publication number: CN213286796U
Application number: CN202020801471.3U
Authority: CN
Inventors: 陈红星; 谌建新; 张远军
Original assignee: Jiangsu Wansheng Dawei Chemical Co ltd
Current assignee: Jiangsu Wansheng Dawei Chemical Co ltd
Priority date: 2020-05-14
Filing date: 2020-05-14
Publication date: 2021-05-28
Anticipated expiration: 2030-05-14

Abstract

The utility model relates to a uniform heating mechanism for preparing tetramethylhexamethylenediamine, which comprises a water bath container, a reaction container arranged in the water bath container, a guide component matched with the reaction container and a discharging component arranged on the guide component; the guide assembly comprises a support unit, and a heating space is formed between the output end of the support unit and the inner wall of the reaction vessel; the utility model provides a during water-bath heating, the mixture hybrid heating in the reaction vessel is inhomogeneous, and the mixture rate of heating of outer wall is fast, the slower technical problem of the mixture heating at center more.

Description

Uniform heating mechanism for preparing tetramethyl hexanediamine

Technical Field

The utility model relates to a tetramethyl hexanediamine technical field especially relates to a tetramethyl hexanediamine preparation is with even heating mechanism.

Background

The tetramethylhexanediamine is colorless to light yellow transparent liquid, the solubility of the tetramethylhexanediamine in water at 20 ℃ is 40%, the relative density (20 ℃) is 0.80, the viscosity (25 ℃) is 1mpa.s, the boiling range is 198-216 ℃, the flash point COC81 ℃, the freezing point is-46 ℃, the tetramethylhexanediamine is a catalyst which is not sensitive to heat, can be used for various polyurethane foam plastics, is particularly suitable for polyurethane hard foam and is a foaming/gel balance catalyst, and meanwhile, the tetramethylhexanediamine is also a novel softener synthesis raw material and can be used for synthesizing quaternary ammonium salt softeners. With the continuous research on softening agents, the application of the softening agents in the textile printing and dyeing industry is increasingly known.

Patent document No. CN991129237 discloses a method for preparing N, N '-tetramethylhexamethylenediamine, which comprises performing aminomethylation reaction of 1, 6-hexamethylenediamine with formic acid and formic acid or a mixed acid containing at least formic acid under normal pressure and without a catalyst to prepare N, N' -tetramethylhexamethylenediamine; the reaction temperature is 50-100 ℃, and the molar ratio of the reactants to the formaldehyde to the acid is 1: 4-20.

However, in actual use, the inventors found that when the mixture in the reaction vessel is heated in a water bath, the mixture is not uniformly mixed and heated, and the mixture is heated at a high speed on the outer wall and at a low speed on the center.

SUMMERY OF THE UTILITY MODEL

The utility model aims at prior art's weak point, through setting up direction subassembly cooperation ejection of compact subassembly, make formic acid and 1, 6-hexanediamine intensive mixing's in-process, the ejection of compact of mixture is opened automatically, and automatic inner wall landing downwards along reaction vessel under the guide effect of direction subassembly, improve the contact time and the path of flowing in of reaction vessel inner wall, and then make mixture even heating and intensive heating, thereby when having solved water bath heating, mixture hybrid heating in the reaction vessel is inhomogeneous, the mixture rate of heating of outer wall is fast, the slower technical problem of mixture heating more at center.

Aiming at the technical problems, the technical scheme is as follows: a uniform heating mechanism for preparing tetramethylhexamethylenediamine comprises a water bath container, a reaction container arranged in the water bath container, a guide component matched with the reaction container and a discharging component arranged on the guide component;

the guide assembly comprises a support unit, and a heating space is formed between the output end of the support unit and the inner wall of the reaction vessel.

Preferably, the input end of the bracket unit is sleeved with an abutting plate.

Preferably, the reaction vessel is a jar and the caliber of the jar is L1, the outer diameter of the abutting plate is L2, and L2 is not less than L1.

Preferably, the input of support unit includes the column of keeping in, and this column of keeping in is hollow circular cylinder structure and this column bottom of keeping in is provided with and keeps off the charging tray.

Preferably, the output end of the support unit comprises two groups of guide posts which are symmetrically arranged on two sides of the temporary storage post.

Preferably, the guide post is in smooth and smooth transition connection with the temporary storage post, and the guide post sequentially comprises an inclined portion a, a vertical portion and an inclined portion b along the vertical direction, wherein the inclined portion a is inclined from the temporary storage post towards the inner wall of the reaction vessel, the vertical portion is vertically arranged downwards from the output end of the inclined portion a, and the inclined portion b is inclined from the output end of the vertical portion towards the temporary storage post.

Preferably, the inclined portion a and the inclined portion b are both double-layer plates; the vertical portion is a single-layer plate.

Preferably, the discharging assembly comprises a cross ring rotatably arranged at the upper end of the temporary storage column, a stirring shaft coaxial with and fixedly connected with the cross ring, and a dislocation disc arranged below the stirring shaft, and the stirring shaft penetrates through the material blocking disc;

the upper surface of the dislocation disc is attached to the lower surface of the material blocking disc, a first material outlet is formed in the dislocation disc, a second material outlet is formed in the material blocking disc, and the first material outlet and the second material outlet are matched in structure;

the cross ring is provided with a handle.

Preferably, a plurality of groups of swing blades are uniformly arranged on the stirring shaft, and the swing blades are obliquely and downwards arranged.

Preferably, the jar, the abutment plate and the temporary storage column are arranged coaxially.

The utility model has the advantages that:

(1) in the utility model, the guide component is matched with the discharging component, so that in the process of fully mixing formic acid and 1, 6-hexamethylene diamine, the discharging of the mixture is automatically opened, and the mixture automatically slides downwards along the inner wall of the reaction vessel under the guide effect of the guide component, thereby improving the contact time with the inner wall of the reaction vessel and the path of the flow path, and further uniformly heating and fully heating the mixture;

(2) the utility model, through the arrangement of the handle, the manual work acts on the handle to drive the stirring shaft to rotate, and on one hand, the complete mixing work of the mixed materials is completed in the rotating process of the stirring shaft; on the other hand does benefit to the stirring shaft and drives the dislocation dish and rotate, and then realizes that the first discharge gate and the second discharge gate of dislocation dish and fender charging tray correspond the ejection of compact.

In conclusion, the equipment has the advantages of simple structure and uniform heating, and is particularly suitable for the technical field of tetramethyl hexanediamine.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings described below 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 view of a uniform heating mechanism for preparing tetramethylhexamethylenediamine.

Fig. 2 is a schematic structural view of the guide assembly.

Fig. 3 is a first schematic sectional view of the guide assembly.

Fig. 4 is a schematic cross-sectional view of the guide assembly.

Fig. 5 is a schematic cross-sectional view of a stent unit.

FIG. 6 is a schematic cross-sectional view of the take-off assembly.

Detailed Description

The technical solution in the embodiment of the present invention is clearly and completely described below with reference to the accompanying drawings.

Example one

As shown in fig. 1, fig. 3 and fig. 4, a uniform heating mechanism for preparing tetramethylhexamethylenediamine comprises a water bath container 1, a reaction container 2 arranged in the water bath container 1, a guide component 3 matched with the reaction container 2, and a discharge component 4 arranged on the guide component 3;

the guide assembly 3 comprises a holder unit 31, and a heating space 30 is formed between an output end of the holder unit 31 and an inner wall of the reaction vessel 2.

In this embodiment, the guiding component 3 is provided to cooperate with the discharging component 4, so that in the process of fully mixing 700g of formic acid with 1, 6-hexamethylene diamine, the discharging of the mixture is automatically opened, and the formic acid automatically slides down along the inner wall of the reaction vessel 2 under the guiding action of the guiding component 3, thereby increasing the contact time and the flow path between the formic acid and the inner wall of the reaction vessel 2, and further uniformly heating and fully heating the mixture.

Further, as shown in fig. 5, an abutting plate 32 is sleeved around the input end of the holder unit 31.

In this embodiment, through setting up the backup plate 32, avoid the quick loss of hot gas, utilize the backup plate 32 in addition for the guide assembly 3 supports places on reaction vessel 2.

Further, as shown in FIG. 5, the reaction vessel 2 is a jar having a caliber of L1, the outer diameter of the abutting plate 32 is L2, and L2 is not less than L1.

Further, as shown in fig. 3 and 4, the input end of the support unit 31 includes a temporary storage column 33, the temporary storage column 33 is a hollow cylindrical structure, and a material blocking tray 34 is disposed at the bottom of the temporary storage column 33.

In this embodiment, the temporary storage column 33 is provided to allow the mixture to react sufficiently before the flow path is operated.

Further, as shown in fig. 3 and 4, the output end of the support unit 31 includes two sets of guide posts 35, and the guide posts 35 are symmetrically disposed on two sides of the temporary storage post 33.

In this embodiment, the guiding pillars 35 are provided to guide the mixture after the sufficient reaction to slide down along the inner wall of the reaction vessel 2 under the guiding of the guiding pillars 35, thereby improving the heating uniformity and the heating sufficiency of the mixture.

Further, as shown in fig. 2, the guide post 35 is smoothly transitionally connected to the temporary storage post 33, and the guide post 35 sequentially includes an inclined portion a35a, a vertical portion 35b, and an inclined portion b35c in the vertical direction, wherein the inclined portion a35a is obliquely disposed from the temporary storage post 33 toward the inner wall of the reaction vessel 2, the vertical portion 35b is vertically disposed downward from the output end of the inclined portion a35a, and the inclined portion b35c is obliquely disposed from the output end of the vertical portion 35b toward the temporary storage post 33.

As shown in fig. 3 and 4, the inclined portion a35a and the inclined portion b35c are both double-layer plates; the vertical portion 35b is a single-layer plate.

It should be noted that the outer plate of the inclined portion a35a is abutted against the inner wall of the reaction vessel 2, so that the mixture can enter the inner wall of the reaction vessel 2 under the guidance of the inclined portion a35a and the vertical portion 35 b.

Further, as shown in fig. 1, 3, and 4, the discharging assembly 4 includes a cross ring 41 rotatably disposed at the upper end of the temporary storage column 33, a stirring shaft 42 coaxial and fixedly connected with the cross ring 41, and a shifting plate 43 disposed below the stirring shaft 42, wherein the stirring shaft 42 penetrates through the material blocking plate 34;

the upper surface of the dislocation disc 43 is attached to the lower surface of the material blocking disc 34, the dislocation disc 43 is provided with a first material outlet 430, the material blocking disc 34 is provided with a second material outlet 340, and the first material outlet 430 and the second material outlet 340 are matched in structure;

the cross ring 41 is provided with a handle 44.

In the embodiment, the handle 44 is arranged, manual work acts on the handle 44 to drive the stirring shaft 42 to rotate, and during the rotation process of the stirring shaft 42, on one hand, the mixing operation is fully performed; on the other hand, the stirring shaft 42 is favorable for driving the dislocation disc 43 to rotate, so that the dislocation disc 43 and the first discharge hole 430 and the second discharge hole 340 of the material blocking disc 34 correspondingly discharge materials.

In addition, the cross-shaped ring 41 can be used to mount the cross-shaped ring 41 on the upper end of the temporary storage column 33; in addition, the empty space of the cross-shaped ring 41 facilitates the input of reactants.

Further, the reaction vessel 2, the abutting plate 32 and the temporary storage column 33 are coaxially arranged.

Example two

As shown in fig. 6, in which the same or corresponding components as in the first embodiment are denoted by the same reference numerals as in the first embodiment, only the points of difference from the first embodiment will be described below for the sake of convenience. The second embodiment is different from the first embodiment in that:

further, as shown in fig. 6, a plurality of sets of swing blades 45 are uniformly arranged on the stirring shaft 42, and the swing blades 45 are arranged obliquely downward.

It is worth mentioning here that by arranging the swinging vane 45 to be inclined downward, the reactant is prevented from being retained on the swinging vane 45.

The working process is as follows:

firstly, 174g (1.5mol) of 1, 6-hexamethylene diamine is added into a temporary storage column 33, the mixture is cooled in a water bath, 700g (13mol) of 88% formic acid is slowly dripped into the temporary storage column 33, and the water bath is heated to 90 ℃ after the dripping is finished;

meanwhile, the handle 44 is manually rotated, the cross ring 41 rotates through the stirring shaft 42, in the rotating process of the stirring shaft 42, the swinging blade 45 drives the dislocation disc 43 to rotate through the stirring shaft 42 while stirring the reactants, the second discharge port 340 of the dislocation disc 43 is aligned with the second discharge port 340 formed on the material blocking disc 34, and the mixture falls downwards along the inside of the reaction vessel 2 under the guiding direction of the guiding column 35 to complete the heating work.

In the description of the present invention, it is to be understood that the terms "front and back", "left and right", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or parts 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.

Of course, in this disclosure, those skilled in the art will understand that the terms "a" and "an" should be interpreted as "at least one" or "one or more," i.e., in one embodiment, a number of an element may be one, and in another embodiment, a number of the element may be plural, and the terms "a" and "an" should not be interpreted as limiting the number.

The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art in the technical suggestion of the present invention should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A uniform heating mechanism for preparing tetramethylhexamethylenediamine comprises a water bath container (1) and a reaction container (2) arranged in the water bath container (1), and is characterized by also comprising a guide component (3) matched with the reaction container (2) and a discharge component (4) arranged on the guide component (3);

the guide assembly (3) comprises a support unit (31), and a heating space (30) is formed between the output end of the support unit (31) and the inner wall of the reaction vessel (2).

2. The uniform heating mechanism for tetramethylhexamethylenediamine according to claim 1, wherein the support unit (31) has an abutting plate (32) around the input end.

3. The uniform heating mechanism for tetramethylhexamethylenediamine according to claim 2, wherein the reaction vessel (2) is a jar having a caliber of L1, and the outer diameter of the support plate (32) is L2, L2 is L1.

4. The uniform heating mechanism for preparing tetramethylhexamethylenediamine according to claim 2, wherein the input end of the support unit (31) comprises a temporary storage column (33), the temporary storage column (33) is a hollow cylindrical structure, and the bottom of the temporary storage column (33) is provided with a material blocking disc (34).

5. The uniform heating mechanism for tetramethylhexamethylenediamine according to claim 4, wherein the output end of the support unit (31) comprises two sets of guide posts (35), and the guide posts (35) are symmetrically disposed on both sides of the temporary storage post (33).

6. The uniform heating mechanism for tetramethylhexamethylenediamine according to claim 5, wherein the guide column (35) is smoothly transitionally connected to the temporary storage column (33), and the guide column (35) comprises an inclined portion a (35a), a vertical portion (35b), and an inclined portion b (35c) in the vertical direction, the inclined portion a (35a) is disposed from the temporary storage column (33) toward the inner wall of the reaction vessel (2), the vertical portion (35b) is disposed vertically downward from the output end of the inclined portion a (35a), and the inclined portion b (35c) is disposed from the output end of the vertical portion (35b) toward the temporary storage column (33).

7. The uniform heating mechanism for tetramethylhexamethylenediamine according to claim 6, wherein the inclined portion a (35a) and the inclined portion b (35c) are both double-layer plates; the vertical portion (35b) is a single-layer plate.

8. The uniform heating mechanism for preparing tetramethylhexamethylenediamine according to claim 4, wherein the discharging assembly (4) comprises a cross ring (41) rotatably disposed at the upper end of the temporary storage column (33), a stirring shaft (42) coaxially and fixedly connected with the cross ring (41), and a shifting disk (43) disposed below the stirring shaft (42), the stirring shaft (42) penetrates through the material blocking disk (34);

the upper surface of the dislocation disc (43) is attached to the lower surface of the material blocking disc (34), a first material outlet (430) is formed in the dislocation disc (43), a second material outlet (340) is formed in the material blocking disc (34), and the first material outlet (430) and the second material outlet (340) are structurally matched;

the cross ring (41) is provided with a handle (44).

9. The uniform heating mechanism for tetramethylhexamethylenediamine as claimed in claim 8, wherein the stirring shaft (42) has a plurality of sets of swinging blades (45) uniformly disposed thereon, and the swinging blades (45) are disposed obliquely downward.

10. The uniform heating mechanism for tetramethylhexamethylenediamine according to claim 4, wherein the reaction vessel (2), the support plate (32) and the temporary storage column (33) are coaxially disposed.