CN216169954U

CN216169954U - Dewatering device is used in guanidine thiocyanate preparation

Info

Publication number: CN216169954U
Application number: CN202122303948.2U
Authority: CN
Inventors: 曹继虎; 罗士超
Original assignee: Ningxia Xinlitai Chemical Co ltd
Current assignee: Ningxia Xinlitai Chemical Co ltd
Priority date: 2021-09-23
Filing date: 2021-09-23
Publication date: 2022-04-05
Anticipated expiration: 2031-09-23

Abstract

The utility model belongs to the technical field of medicament preparation, in particular to a dehydration device for preparing guanidine thiocyanate, which aims at the problem that hot steam carrying guanidine thiocyanate is generated in a guanidine thiocyanate dehydration process; in the utility model, the liquid water condensed by the spiral radiating pipe dissolves part of guanidine thiocyanate carried in steam, the guanidine thiocyanate flows into the liquid storage tank to be collected, the collection of guanidine thiocyanate in hot steam is completed, part of air with guanidine thiocyanate is discharged into the reaction tank through the exhaust pipe, the guanidine thiocyanate is removed through the reaction of the reagent, the air is discharged, and the harm to the personal health of personnel caused by the discharge of guanidine thiocyanate to the atmosphere is avoided.

Description

Dewatering device is used in guanidine thiocyanate preparation

Technical Field

The utility model relates to the technical field of medicament preparation, in particular to a dehydration device for preparing guanidine thiocyanate.

Background

Guanidine thiocyanate is an organic compound, also known as "guanidine thiocyanate": guanidinium isothiocyanate; guanidine thiocyanate, guanidine thiocyanate is a white crystal, the melting point is 116-121 ℃, the pH value of 6mol/L in water is 4.5-6 at 20 ℃, and the solubility is complete dissolution. It can be used as biochemical reagent, medical intermediate, degreasing in grease industry, strong fat degradation agent in daily chemical industry, cell membrane breaking agent in biological pharmacy, and guanidine thiocyanate, and has the following preparation process flows: (1) putting guanidine carbonate and ammonium sulfate in a weight ratio of 2: 1 into a reaction kettle, and reacting for 1.5 hours at 45-95 ℃ to obtain a crude product of guanidine thiocyanate. (2) Dissolving, namely dissolving the crude guanidine thiocyanate product in water at normal temperature according to the ratio of 0.5: 1; (3) filtering, and removing impurities such as raw materials, reaction byproducts and the like by a filtering method; (4) dehydrating, namely dehydrating the filtered mother liquor at high temperature; (5) crystallizing, cooling the solution, concentrating and crystallizing to obtain the high-purity guanidine thiocyanate.

In the dehydration process flow for preparing the guanidine thiocyanate, part of hot steam carrying the guanidine thiocyanate can be generated and discharged into the atmosphere to cause harm to the human health of personnel, and a small part of the guanidine thiocyanate in the mother solution can be separated out and accumulated on the inner wall of the evaporation device in the dehydration process of the guanidine thiocyanate.

Therefore, a need exists for a dehydration device for preparing guanidine thiocyanate, which is used for solving the problem that hot steam carrying guanidine thiocyanate is generated in the guanidine thiocyanate dehydration process.

SUMMERY OF THE UTILITY MODEL

The utility model provides a dehydration device for preparing guanidine thiocyanate, which solves the problem that hot steam carrying guanidine thiocyanate is generated in a guanidine thiocyanate dehydration process.

In order to achieve the purpose, the utility model adopts the following technical scheme: a dewatering device for preparing guanidine thiocyanate comprises an evaporation tank, wherein a sealing cover is fixed at the top end of the evaporation tank, a spiral radiating pipe is arranged on one side of the evaporation tank, a solution guide pipe and a steam guide pipe a are fixed on the outer surface of the sealing cover, the steam guide pipe a is in through connection with the spiral radiating pipe, a steam guide pipe b is in through connection with the bottom end of the spiral radiating pipe, a plurality of radiating metal sheets are fixed on the outer side of the spiral radiating pipe, a mounting frame is fixed above the radiating metal sheets, a motor is fixed at the top end of the mounting frame, a belt pulley a is fixed at the bottom end of the motor, a fan is coaxially fixed at the bottom end of the belt pulley a, a rotating shaft is rotatably connected at the center of the sealing cover, a belt pulley b is coaxially fixed at the top end of the rotating shaft, and a transmission belt is connected between the belt pulley b and the belt pulley a; the cleaning assembly is arranged on the rotating shaft.

Preferably, the cleaning assembly comprises a plurality of connecting rods fixed on the outer surface of the rotating shaft, a connecting plate is fixed at one end, away from the rotating shaft, of each connecting rod, and a scraper and a brush are fixed on the connecting plate.

Preferably, a liquid outlet pipe a and a plurality of support columns are fixed at the bottom end of the evaporation tank, and an electric control valve a is arranged on the liquid outlet pipe.

Preferably, the diameter of the pulley a is smaller than that of the pulley b.

Preferably, a liquid storage tank is fixed at the bottom end of the steam delivery pipe b, a liquid outlet pipe b is fixed on one side of the liquid storage tank, and an electric control valve b is arranged on the liquid outlet pipe b.

Preferably, an exhaust pipe is fixed on one side of the liquid storage tank, and a reaction tank is arranged at the bottom end of the exhaust pipe.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, hot steam is condensed into liquid water through the cooperation of the spiral radiating pipe and the fan, guanidine thiocyanate carried in partial steam is dissolved and flows into the liquid storage tank for collection, the collection of guanidine thiocyanate in the hot steam is completed, partial air with guanidine thiocyanate is discharged into the reaction tank through the exhaust pipe, the guanidine thiocyanate is removed through the reaction of a reagent, the air is discharged, and the harm to the personal health of personnel caused by the discharge of guanidine thiocyanate into the atmosphere is avoided.

2. In the utility model, the motor is started and simultaneously drives the belt pulley a to rotate, and after the transmission of the belt pulley a is conducted by the transmission belt, the belt pulley b drives the rotating shaft to rotate and drives the connecting rod to rotate around the inner wall of the evaporation tank, so that the scraper and the brush the inner wall of the evaporation tank, and partial guanidine thiocyanate is prevented from being separated out and accumulated on the inner wall of the evaporation tank.

Drawings

FIG. 1 is a schematic diagram showing the main structure of a dehydration apparatus for guanidine thiocyanate preparation according to the present invention;

FIG. 2 is a schematic view of a spiral heat dissipation pipe of a dehydration apparatus for guanidine thiocyanate preparation according to the present invention;

FIG. 3 is a schematic view of a part of the structure of a cleaning assembly of a dehydration device for guanidine thiocyanate preparation according to the present invention;

FIG. 4 is a schematic view of a fan portion of a dehydration apparatus for guanidine thiocyanate preparation according to the present invention.

In the figure: 1. an evaporator tank; 2. sealing the cover; 3. a spiral radiating pipe; 4. a solution conduit; 5. a steam delivery pipe a; 6. a steam delivery pipe b; 7. a heat dissipating metal sheet; 8. installing a frame; 9. a motor; 10. a belt pulley a; 11. a fan; 12. a rotating shaft; 13. a belt pulley b; 14. a transmission belt; 15. cleaning the assembly; 16. a connecting rod; 17. a connecting plate; 18. a squeegee; 19. a brush; 20. a liquid outlet pipe a; 21. a support pillar; 22. an electric control valve a; 23. a liquid storage tank; 24. a liquid outlet pipe b; 25. an electric control valve b; 26. an exhaust pipe; 27. and (4) a reaction tank.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-4, a dehydration device for preparing guanidine thiocyanate, comprising an evaporation tank 1, wherein a sealing cover 2 is fixed at the top end of the evaporation tank 1, a spiral radiating pipe 3 is arranged at one side of the evaporation tank 1, a solution guide pipe 4 and a steam guide pipe a5 are fixed on the outer surface of the sealing cover 2, the steam guide pipe a5 is communicated with the spiral radiating pipe 3, the bottom end of the spiral radiating pipe 3 is communicated with a steam guide pipe b6, a plurality of radiating metal sheets 7 are fixed on the outer side of the spiral radiating pipe 3, a mounting frame 8 is fixed above the radiating metal sheets 7, a motor 9 is fixed at the top end of the mounting frame 8, a belt pulley a10 is fixed at the bottom end of the motor 9, a fan 11 is coaxially fixed at the bottom end of the belt pulley a10, a rotating shaft 12 is rotatably connected at the center of the sealing cover 2, a belt pulley b13 is coaxially fixed at the top end of the rotating shaft 12, and a transmission belt 14 is connected between the belt pulley b13 and the belt pulley a 10; cleaning assembly 15, cleaning assembly 15 sets up on axis of rotation 12, in leading-in evaporating pot 1 with the guanidinium thiocyanate solution by solution pipe 4, heat evaporating pot 1 evaporation guanidinium thiocyanate solution, hot steam is leading-in to spiral cooling tube 3 by steam eduction tube a5, the area of contact of spiral helicine heat pipe increase and air, heat dissipation sheetmetal 7 further increases heat radiating area, starter motor 9 drives fan 11 and rotates, the quick hot air with on the heat dissipation sheetmetal 7 is taken away, accelerate the cooling rate of hot steam, make the hot steam condensate into liquid water, dissolve a part of guanidinium thiocyanate, when guanidinium thiocyanate solution evaporates to the critical point, the stop heating, start electric control valve a22, derive the mother liquor by drain pipe a 20.

Cleaning assembly 15 is including being fixed in a plurality of connecting rod 16 of axis of rotation 12 surface, the one end that axis of rotation 12 was kept away from to connecting rod 16 is fixed with connecting plate 17, be fixed with scraper blade 18 and brush 19 on the connecting plate 17, drive belt pulley a10 rotation when motor 9 starts, after the conduction via drive belt 14, belt pulley b13 drives axis of rotation 12 and rotates, it rotates to drive connecting rod 16 around the inner wall of evaporating pot 1, make scraper blade 18 and brush 19 brush the inner wall of evaporating pot 1, avoid some guanidine thiocyanate to separate out and gather on the inner wall of evaporating pot 1.

A liquid outlet pipe a20 and a plurality of supporting columns 21 are fixed at the bottom end of the evaporation tank 1, and an electric control valve a22 is arranged on the liquid outlet pipe.

The diameter of the belt pulley a10 is smaller than that of the belt pulley b13, so that the rotating shaft 12 can drive the scraper 18 and the brush 19 to brush the inner wall of the evaporation tank 1 at a low rotating speed while the fan 11 rotates at a high speed.

The bottom end of the steam leading-out pipe b6 is fixed with a liquid storage tank 23, one side of the liquid storage tank 23 is fixed with a liquid outlet pipe b24, an electric control valve b25 is arranged on the liquid outlet pipe b24, and the condensed liquid water dissolves guanidine thiocyanate carried in partial steam and flows into the liquid storage tank 23 for collection, so that the collection of guanidine thiocyanate in hot steam is completed, and the harm to the personal health of personnel caused by the discharge of guanidine thiocyanate to the atmosphere is avoided.

An exhaust pipe 26 is fixed on one side of the liquid storage tank 23, a reaction tank 27 is arranged at the bottom end of the exhaust pipe 26, and a part of air with residual guanidine thiocyanate is discharged into the reaction tank 27 through the exhaust pipe 26, and the guanidine thiocyanate is removed through reaction of a reagent to discharge the air.

The working principle is as follows: guanidine thiocyanate solution is led into an evaporation tank 1 through a solution guide pipe 4, the evaporation tank 1 is heated to evaporate the guanidine thiocyanate solution, hot steam is led into a spiral radiating pipe 3 through a steam leading-out pipe a5, the contact area of the spiral radiating pipe and air is increased through a spiral heat conducting pipe, the radiating area is further increased through a radiating metal sheet 7, a motor 9 is started to drive a fan 11 to rotate, hot air on the radiating metal sheet 7 is rapidly taken away, the cooling speed of the hot steam is increased, the hot steam is condensed into liquid water, a part of guanidine thiocyanate is dissolved, when the guanidine thiocyanate solution is evaporated to a critical point, heating is stopped, an electric control valve a22 is started, mother liquor is led out through a liquid outlet pipe a20, the condensed liquid water dissolves the guanidine thiocyanate carried in part of the steam and flows into a liquid storage tank 23 to be collected, the collection of the guanidine thiocyanate in the hot steam is completed, and a part of the air with the guanidine thiocyanate is discharged into a reaction tank 27 through an exhaust pipe 26, guanidine thiocyanate is removed through reaction of the reagent, air is discharged, and harm to the human health of personnel caused by discharge of guanidine thiocyanate into the atmosphere is avoided; the motor 9 is started and simultaneously drives the belt pulley a10 to rotate, after the conduction of the belt 14, the belt pulley b13 drives the rotating shaft 12 to rotate, and drives the connecting rod 16 to rotate around the inner wall of the evaporation tank 1, so that the scraper 18 and the brush 19 brush the inner wall of the evaporation tank 1, and partial guanidine thiocyanate is prevented from being separated out and accumulated on the inner wall of the evaporation tank 1.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides a dewatering device is used in guanidine thiocyanate preparation, includes evaporating pot (1), its characterized in that, evaporating pot (1) top is fixed with closing cap (2), evaporating pot (1) one side is provided with spiral cooling tube (3), closing cap (2) surface mounting has solution pipe (4) and steam delivery pipe a (5), steam delivery pipe a (5) and spiral cooling tube (3) through connection, spiral cooling tube (3) bottom through connection has steam delivery pipe b (6), the spiral cooling tube (3) outside is fixed with a plurality of heat dissipation sheetmetal (7), heat dissipation sheetmetal (7) top is fixed with installing frame (8), installing frame (8) top is fixed with motor (9), motor (9) bottom mounting has belt pulley a (10), belt pulley a (10) bottom coaxial fixation has fan (11), a rotating shaft (12) is rotatably connected to the center of the sealing cover (2), a belt pulley b (13) is coaxially fixed at the top end of the rotating shaft (12), and a transmission belt (14) is connected between the belt pulley b (13) and the belt pulley a (10) in a transmission manner;

the cleaning assembly (15), the cleaning assembly (15) sets up on axis of rotation (12).

2. The dehydration device for the preparation of guanidine thiocyanate according to claim 1, characterized in that the cleaning assembly (15) comprises a plurality of connecting rods (16) fixed on the outer surface of the rotating shaft (12), a connecting plate (17) is fixed on one end of the connecting rods (16) far away from the rotating shaft (12), and a scraper (18) and a brush (19) are fixed on the connecting plate (17).

3. The guanidine thiocyanate preparation dehydration device according to claim 1, wherein a liquid outlet pipe a (20) and a plurality of support columns (21) are fixed at the bottom end of the evaporation tank (1), and an electric control valve a (22) is arranged on the liquid outlet pipe.

4. The dehydration apparatus for preparation of guanidine thiocyanate according to claim 1, wherein the diameter of pulley a (10) is smaller than that of pulley b (13).

5. The dehydration device for preparing guanidine thiocyanate, according to claim 1, characterized in that a liquid storage tank (23) is fixed at the bottom end of the vapor delivery pipe b (6), a liquid outlet pipe b (24) is fixed at one side of the liquid storage tank (23), and an electric control valve b (25) is arranged on the liquid outlet pipe b (24).

6. The dehydration device for the preparation of guanidine thiocyanate according to claim 5, characterized in that an exhaust pipe (26) is fixed on one side of the liquid storage tank (23), and a reaction tank (27) is arranged at the bottom end of the exhaust pipe (26).