Mixed liquid tank for NMP (N-Methyl Pyrrolidone) synthesis reaction

Abstract

The utility model relates to the technical field of mixed liquor tanks, and discloses a mixed liquor tank for NMP (N-Methyl Pyrrolidone) synthesis reaction, which comprises a mixed liquor tank, support legs fixedly connected to the bottom of the mixed liquor tank in an array manner, feed pipes fixedly connected to two sides of the upper end face of the mixed liquor tank, a discharge pipe fixedly connected to the bottom end of the mixed liquor tank, and a control valve arranged on the discharge pipe, a middle heat preservation assembly and a bottom heat preservation assembly which are used for heat preservation of the mixed liquid tank are arranged on the outer side of the mixed liquid tank, the bottom heat preservation assembly and the middle heat preservation assembly are used in cooperation, and a mixing assembly used for promoting NMP reaction is arranged on the inner side of the mixed liquid tank. By means of the middle heat preservation assembly and the bottom heat preservation assembly, heat loss can be effectively reduced, the stability of the temperature in the tank is kept, the reaction efficiency is improved, the middle heat preservation assembly and the bottom heat preservation assembly can be rapidly disassembled and assembled, and the middle heat preservation assembly and the bottom heat preservation assembly can be conveniently replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of mixed liquid tank, specifically, relate to a mixed liquid tank for NMP synthesis reaction. BACKGROUND

[0002] N-methyl pyrrolidone (NMP) is an organic matter, is colorless to light yellow transparent liquid, slightly ammonia smell, with water is mixed with any proportion, dissolve in ether, acetone and ester, halogenated hydrocarbon, aromatic hydrocarbon etc. all kinds of organic solvents, almost with all solvents completely mixed. It is excellent senior solvent, it is selective and stable good polar solvent, high precision electronic, circuit board, lithium battery's excellent cleaning agent. At present, the production of NMP is mainly through GBL and methylamine ammoniation reaction production NMP, because ammoniation reaction is reversible reaction, reaction condition is harsh, needs generating NMP at 280 DEG C or so temperature, the existing NMP reactor is mostly set heating, feeding and reaction in one, the reaction material enters the reactor, and then carries out the reaction at the set temperature, and the material needs to be heated to the reaction temperature after entering.

[0003] The existing device has some disadvantages in the using process, for example: the mixed liquid tank for NMP synthesis reaction directly affects the effect of internal material mixing reaction when in use, most of the existing mixed liquid tanks are wrapped with a layer of thermal insulation layer on the outer surface by adhesive, since the thermal insulation layer and the tank body are fixed by adhesive, cutting or peeling is needed when removing the thermal insulation layer, which not only wastes time and effort, but also may cause damage to the surface of the tank. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a mixed liquid tank for NMP synthesis reaction, solving the problem that most of the mixed liquid tanks are wrapped with a layer of thermal insulation layer on the outer surface by adhesive, since the thermal insulation layer and the tank body are fixed by adhesive, cutting or peeling is needed when removing the thermal insulation layer, which not only wastes time and effort, but also may cause damage to the surface of the tank.

[0005] The utility model provides the following technical scheme: a mixed liquid tank for NMP synthesis reaction, including mixed liquid tank, the mixed liquid tank bottom array fixedly connected with support leg, the mixed liquid tank upper end surface both sides are fixedly connected with feeding pipe, the mixed liquid tank bottom fixedly connected with discharge pipe, be provided with control valve on the discharge pipe, the mixed liquid tank outside is provided with the middle part thermal insulation subassembly and bottom thermal insulation subassembly of the mixed liquid tank heat preservation, the bottom thermal insulation subassembly and middle part thermal insulation subassembly cooperation uses, the mixed liquid tank inside is provided with the mixing subassembly for promoting NMP reaction.

[0006] As the preferred technical scheme of the above, the middle heat preservation assembly comprises a first arc-shaped heat preservation sleeve and a second arc-shaped heat preservation sleeve, a plurality of clamping plates are fixedly connected to the outer walls at the two ends of the first arc-shaped heat preservation sleeve, clamping holes are formed in the plurality of clamping plates, a plurality of fixed plates are fixedly connected to the outer walls at the two ends of the second arc-shaped heat preservation sleeve, two reset rods are symmetrically arranged on each of the plurality of fixed plates, and clamping blocks are fixedly connected to the ends of the two reset rods away from the fixed plates.

[0007] As the preferred technical scheme of the above, the reset rods are made of elastic plastic.

[0008] As the preferred technical scheme of the above, the bottom heat preservation assembly comprises a plurality of bearing rods fixedly connected to the outer wall of the bottom of the mixed liquid tank in a ring array and a fixed ring sleeved on the bottom of the mixed liquid tank, the fixed ring is placed on the plurality of bearing rods, and a plurality of sector-shaped heat preservation sleeves are arranged in a ring array on the lower end surface of the fixed ring.

[0009] As the preferred technical scheme of the above, the sector-shaped heat preservation sleeve, the first arc-shaped heat preservation sleeve and the second arc-shaped heat preservation sleeve are all made of rubber plastic material.

[0010] As the preferred technical scheme of the above, the mixing assembly comprises a mounting bracket fixedly installed at the top end of the mixed liquid tank and a driving motor fixedly installed on the mounting bracket, a mixing rod is vertically arranged in the mixed liquid tank, the mixing rod penetrates through the top wall of the mixed liquid tank at the top end and is fixedly connected to the output end of the driving motor, the top of the mixing rod is rotationally connected to the top wall of the mixed liquid tank, and a plurality of mixing blades are arranged in an array on the outer wall of the bottom of the mixing rod.

[0011] Compared with the prior art, the utility model has the advantages that:

[0012] In the utility model, the mixed liquid tank is added with appropriate reactants through the feeding pipe, the middle heat preservation assembly and the bottom heat preservation assembly can effectively reduce heat loss, maintain the stability of the temperature in the tank and improve the reaction efficiency, the middle heat preservation assembly and the bottom heat preservation assembly can be quickly disassembled and assembled, and the middle heat preservation assembly and the bottom heat preservation assembly are convenient to replace. ACCURACY OF DRAWINGS

[0013] Figure 1 It is an overall structure schematic view of the mixed liquid tank for the NMP synthesis reaction;

[0014] Figure 2 It is an explosion structure schematic view of the mixed liquid tank for the NMP synthesis reaction;

[0015] Figure 3 It is a sectional structure schematic view of the mixed liquid tank for the NMP synthesis reaction;

[0016] Figure 4It is a sectional view of the structure schematic diagram of the bottom heat preservation assembly.

[0017] In the figure: 1, mixed liquid tank; 11, support leg; 12, feed pipe; 13, discharge pipe; 14, control valve; 2, middle heat preservation assembly; 21, first arc-shaped heat preservation sleeve; 22, second arc-shaped heat preservation sleeve; 23, clamping plate; 24, clamping hole; 25, fixed plate; 26, reset rod; 27, clamping block; 3, bottom heat preservation assembly; 31, bearing rod; 32, fixed ring; 33, fan-shaped heat preservation sleeve; 4, mixing assembly; 41, mounting frame; 42, driving motor; 43, mixing rod; 44, mixing blade. DETAILED DESCRIPTION

[0018] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

[0019] EMBODIMENT

[0020] As shown in Figure 1 and Figure 3 The utility model provides a kind of technical scheme for NMP synthesis reaction application mixed liquid tank, including mixed liquid tank 1, mixed liquid tank 1 bottom array fixedly connected with support leg 11, by setting support leg 11 can prevent tank body bottom because direct contact ground and heat dissipation too fast, influence reaction temperature, mixed liquid tank 1 upper end surface both sides are fixedly connected with feed pipe 12, mixed liquid tank 1 bottom end is fixedly connected with discharge pipe 13, discharge pipe 13 is provided with control valve 14, mixed liquid tank 1 outside is provided with the middle heat preservation assembly 2 and bottom heat preservation assembly 3 of mixed liquid tank 1 heat preservation, bottom heat preservation assembly 3 and middle heat preservation assembly 2 cooperate to use, mixed liquid tank 1 inside is provided with the mixing assembly 4 for promoting NMP reaction, specifically use process, by feed pipe 12 to mixed liquid tank 1 inside join appropriate amount of reactant, by setting middle heat preservation assembly 2 and bottom heat preservation assembly 3 can effectively reduce heat loss, keep the stability of tank temperature, improve reaction efficiency, start mixing assembly 4, by stirring mode promotes the mixing and reaction of reactant, after reaction, by control valve 14 adjustment discharge pipe 13, reaction product is discharged to specified position.

[0021] As one of the embodiments in the embodiment, as Figure 2 and Figure 4As shown in the figure, the middle heat preservation assembly 2 comprises a first arc-shaped heat preservation sleeve 21 and a second arc-shaped heat preservation sleeve 22, a plurality of clamping plates 23 are fixedly connected to the outer walls at both ends of the first arc-shaped heat preservation sleeve 21, a clamping hole 24 is formed in each of the plurality of clamping plates 23, a plurality of fixed plates 25 are fixedly connected to the outer walls at both ends of the second arc-shaped heat preservation sleeve 22, two reset rods 26 are symmetrically arranged on each of the plurality of fixed plates 25, the reset rods 26 are made of elastic plastic, a clamping block 27 is fixedly connected to the end of each of the two reset rods 26 away from the fixed plate 25, and in the specific use process, the first arc-shaped heat preservation sleeve 21 and the second arc-shaped heat preservation sleeve 22 are respectively placed on the two sides of the middle of the mixed liquid tank 1, the clamping block 27 on the second arc-shaped heat preservation sleeve 22 is aligned with the clamping hole 24 on the first arc-shaped heat preservation sleeve 21, and the two are pushed with force, so that the clamping block 27 is inserted into the clamping hole 24, and in the insertion process, the reset rod 26 will be bent due to resistance, so that the clamping block 27 can smoothly enter the clamping hole 24, and once the clamping block 27 completely enters the clamping hole 24, the elastic force of the reset rod 26 will make the clamping block 27 firmly clamped on the clamping plate 23, thereby realizing the firm connection of the first arc-shaped heat preservation sleeve 21 and the second arc-shaped heat preservation sleeve 22.

[0022] As an embodiment in the present embodiment, as shown in the figure, Figure 2 As shown in the figure, the bottom heat preservation assembly 3 comprises a plurality of bearing rods 31 fixedly connected in a ring array on the outer wall of the bottom of the mixed liquid tank 1 and a fixed ring 32 sleeved on the bottom of the mixed liquid tank 1, the fixed ring 32 is placed on the plurality of bearing rods 31, a plurality of sector-shaped heat preservation sleeves 33 are annularly arranged on the lower end surface of the fixed ring 32, and in the specific use process, first, the fixed ring 32 is passed through the mixed liquid tank from top to bottom, then the stability of the entire bottom heat preservation assembly 3 is ensured through the combination of the bearing rods 31 and the fixed ring 32, and the first arc-shaped heat preservation sleeve 21 and the second arc-shaped heat preservation sleeve 22 above can be subjected to bearing treatment through the fixed ring 32, so as to avoid the falling of the first arc-shaped heat preservation sleeve 21 and the second arc-shaped heat preservation sleeve 22 (the first arc-shaped heat preservation sleeve 21 and the second arc-shaped heat preservation sleeve 22 are assembled after the installation of the fixed ring 32 is completed), the shape of the sector-shaped heat preservation sleeve 33 matches the shape of the bottom of the mixed liquid tank 1, the loss of heat is reduced, and the heat preservation effect is improved.

[0023] Among them, the sector-shaped heat preservation sleeve 33, the first arc-shaped heat preservation sleeve 21 and the second arc-shaped heat preservation sleeve 22 are all made of rubber plastic material, the rubber plastic material has a certain elasticity, which means that it can deform under external force and restore to the original shape after the external force is removed, this elasticity enables the rubber plastic material to be bent to a certain extent, adapt to the surface of objects with different shapes and curvatures, and the rubber plastic material has excellent heat preservation performance, which can effectively reduce the transfer of heat.

[0024] As an embodiment in the present embodiment, as shown in the figure, Figure 3As shown, the mixing assembly 4 comprises a mounting frame 41 fixedly mounted on the top end of the mixing tank 1 and a driving motor 42 fixedly mounted on the mounting frame 41, a mixing rod 43 is vertically arranged in the inside of the mixing tank 1, the top end of the mixing rod 43 penetrates through the top wall of the mixing tank 1 and the end thereof is fixedly connected with the output end of the driving motor 42, the top of the mixing rod 43 is rotationally connected with the top wall of the mixing tank 1, and a plurality of mixing blades 44 are arrayed on the outer wall of the bottom of the mixing rod 43, in particular, in the use process, the driving motor 42 is started, the output end of the driving motor 42 transmits the torque to the mixing rod 43 fixedly connected therewith, the mixing rod 43 starts to rotate under the action of the torque and drives the mixing blades 44 thereon to rotate together, the rotating mixing blades 44 generate the stirring action in the mixing tank 1 to uniformly mix the materials.

[0025] The above examples are only used to illustrate the technical scheme of the present application, but not limit it.

Claims

1. A kind of NMP synthesis reaction mixing liquid tank, including mixing liquid tank (1), the bottom of the mixing liquid tank (1) array fixedly connected with support leg (11), the upper end surface both sides of the mixing liquid tank (1) are fixedly connected with feed pipe (12), the bottom end of the mixing liquid tank (1) is fixedly connected with discharge pipe (13), control valve (14) is provided on the discharge pipe (13), it is characterized by: The mixing liquid tank (1) is provided with a middle heat preservation assembly (2) and a bottom heat preservation assembly (3) outside the mixing liquid tank (1) for heat preservation, the bottom heat preservation assembly (3) and the middle heat preservation assembly (2) are used in cooperation, and the mixing liquid tank (1) is provided with a mixing assembly (4) inside for promoting NMP reaction.

2. The mixing liquid tank for NMP synthesis reaction according to claim 1, characterized in that: The middle heat preservation assembly (2) comprises a first arc-shaped heat preservation sleeve (21) and a second arc-shaped heat preservation sleeve (22), a plurality of clamping plates (23) are fixedly connected to the outer walls at both ends of the first arc-shaped heat preservation sleeve (21), clamping holes (24) are formed in the clamping plates (23), a plurality of fixed plates (25) are fixedly connected to the outer walls at both ends of the second arc-shaped heat preservation sleeve (22), two reset rods (26) are symmetrically arranged on the fixed plates (25), and clamping blocks (27) are fixedly connected to the ends of the reset rods (26) away from the fixed plates (25).

3. A NMP synthesis reaction mixed liquid tank according to claim 2, characterized in that: The reset rods (26) are made of elastic plastic.

4. The mixing tank for NMP synthesis reaction according to claim 2, characterized in that: The bottom heat preservation assembly (3) comprises a plurality of bearing rods (31) fixedly connected in an annular array to the outer wall of the bottom of the mixing liquid tank (1) and a fixed ring (32) sleeved on the bottom of the mixing liquid tank (1), the fixed ring (32) is placed on the bearing rods (31), and a plurality of sector-shaped heat preservation sleeves (33) are annularly arranged on the lower end surface of the fixed ring (32).

5. The mixing tank for NMP synthesis reaction according to claim 4, characterized in that: The sector-shaped heat preservation sleeves (33), the first arc-shaped heat preservation sleeve (21) and the second arc-shaped heat preservation sleeve (22) are all made of rubber plastic material.

6. The mixing tank for NMP synthesis reaction according to claim 1, characterized in that: The mixing assembly (4) comprises a mounting frame (41) fixedly installed at the top end of the mixing liquid tank (1) and a driving motor (42) fixedly installed on the mounting frame (41), a mixing rod (43) is vertically arranged inside the mixing liquid tank (1), the mixing rod (43) penetrates through the top wall of the mixing liquid tank (1) and is fixedly connected to the output end of the driving motor (42) at the end, the top of the mixing rod (43) is rotatably connected to the top wall of the mixing liquid tank (1), and a plurality of mixing blades (44) are arranged in an array on the outer wall of the bottom of the mixing rod (43).

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