Tail gas emission device in dextran production

Abstract

The utility model relates to the technical field of pharmacy, in particular to a tail gas emission device in dextran production, which not only can be used for conveniently collecting more tail gas by arranging a buffer tank and avoiding hidden dangers caused by overlarge pressure in a pipe, but also can be used for further reducing the temperature of the tail gas, improving the alcohol collection efficiency and reducing the cooling time. Comprising multiple groups of gas transmission mechanisms; the device further comprises a collecting mechanism, a cooling mechanism, a transferring mechanism and a distilling mechanism, the collecting mechanism is installed on the gas conveying mechanism and collects tail gas, the cooling mechanism is installed on the collecting mechanism and cools the tail gas, and the transferring mechanism is installed on the cooling mechanism and transfers condensate. The distillation mechanism is mounted on the transfer mechanism and is used for distilling and purifying the alcohol solution.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of pharmacy, in particular to a dextran production tail gas emission device. BACKGROUND

[0002] Dextran product drying post uses vacuum drying machine to dry, and the water vapor and alcohol gas generated in the drying process are collected in a special tank through a W-3 type vacuum pump, but the W-3 type vacuum pump generates mixed gas containing alcohol gas and vacuum pump oil fume during operation, which is directly discharged into the air, causing pollution to the atmospheric environment.

[0003] The existing tail gas emission device, such as the dextran production tail gas emission device disclosed in the utility model patent with application number 202321543826.3, mainly includes a water ring vacuum pump air inlet and a liquid storage tank upper portion communication, a water ring vacuum pump output and a gas-liquid separator input port communication, a gas-liquid separator gas outlet and atmospheric communication, a delivery pump input port and a gas-liquid separator liquid outlet communication, and a delivery pump output port series connection condenser tube and water ring vacuum pump liquid inlet communication; in use, the water ring vacuum pump extracts the gas at the top of the liquid storage tank, thereby forming negative pressure at the top of the liquid storage tank, so that the alcohol vapor in the kettle is absorbed into the liquid storage tank and condensed and liquefied, and the medium output by the water ring vacuum pump is sent into the gas-liquid separator, and the gas separated by the gas-liquid separator is directly discharged into the atmosphere.

[0004] However, the existing tail gas emission device has the following problems in use: since four water ring vacuum pumps are opened at the same time, a large amount of gas is generated, the pressure in the collection tank is high, and there is a safety hazard, and the alcohol collection efficiency of the existing tail gas emission device is not high, and the alcohol cooling time is long. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a dextran production tail gas emission device which not only collects more tail gas through the setting of the buffer tank to avoid the hidden danger caused by excessive pressure in the pipe, but also further reduces the tail gas temperature, improves the alcohol collection efficiency, and reduces the cooling time.

[0006] The utility model discloses a dextran production tail gas emission device, including multiple sets of gas transmission mechanism, still including collection mechanism, cooling mechanism, transfer mechanism and distillation mechanism, and collection mechanism installs on gas transmission mechanism and carries out collection to tail gas, and cooling mechanism installs on collection mechanism and carries out cooling to tail gas, and transfer mechanism installs on cooling mechanism and carries out transfer to condensate, and distillation mechanism installs on transfer mechanism and carries out distillation purification to alcohol solution, multiple sets of gas transmission mechanism concentrate the tail gas generated after the reaction and store in collection mechanism, and the tail gas in collection mechanism enters cooling mechanism and carries out cooling, and the condensate after cooling is transferred to distillation mechanism in transfer mechanism and carries out distillation purification.

[0007] Preferably, the gas transmission mechanism includes a reaction kettle, a water ring vacuum pump and a check valve, the reaction kettle is installed on the production line, the water ring vacuum pump is in communication with the exhaust port of the reaction kettle, and the check valve is installed at the exhaust port of the water ring vacuum pump; the water ring vacuum pump is started, and the water ring vacuum pump transports the tail gas generated by the reaction of the reaction kettle into the collection mechanism for collection, and the check valve is arranged to avoid backflow of the tail gas between the multiple water ring vacuum pumps.

[0008] Preferably, the collection mechanism includes a buffer tank, a communication pipe, a collection pipe, two sets of pressure gauges, an exhaust pipe and a liquid discharge pipe, the input end of the buffer tank is connected with the output end of the water ring vacuum pump, the output end of the communication pipe is connected with the input end of the collection pipe, the two sets of pressure gauges are installed on the buffer tank and the collection pipe respectively, the input end of the exhaust pipe is connected with the output end of the collection pipe, and the input end of the liquid discharge pipe is connected with the output end of the collection pipe; the water ring vacuum pump transports the tail gas into the buffer tank for primary cooling storage, the tail gas is transported into the collection pipe through the communication pipe for secondary cooling storage, the two sets of pressure gauges are arranged to detect the pressure in the buffer tank and the collection pipe, so that the buffer tank and the collection pipe are prevented from being burst by excessive tail gas, the gas in the collection pipe is transported into the cooling mechanism through the exhaust pipe for cooling, and the liquid condensed in the collection pipe is transported into the transfer mechanism through the liquid discharge pipe.

[0009] Preferably, the communication pipe is made of a φ85 steel wire hose.

[0010] Preferably, the cooling mechanism comprises a plate heat exchanger, a support, two groups of cooling fans, a motor, a double-output shaft speed reducer, a first transmission shaft, four belt pulleys and two groups of belts, the bottom end of the plate heat exchanger is connected with the working surface, the support is installed on the plate heat exchanger, the two groups of cooling fans are both rotationally installed on the support, the bottom end of the motor is connected with the working surface, the bottom end of the double-output shaft speed reducer is connected with the working surface, the first transmission shaft is rotationally installed on the support, the four belt pulleys are respectively installed on the two groups of cooling fans and the first transmission shaft, and the belts are tensioned and installed between adjacent two groups of belt pulleys; the exhaust pipe conveys the collected tail gas into the plate heat exchanger for cooling, the motor is started, the motor drives the first transmission shaft to rotate through the double-output shaft speed reducer, the first transmission shaft drives the belt pulleys connected therewith to rotate, the belt pulleys and the belts cooperate to drive the two groups of cooling fans to rotate, the two groups of cooling fans accelerate the air flow around the plate heat exchanger, accelerate the tail gas cooling, and save the cooling time.

[0011] Preferably, the cooling mechanism comprises a plate heat exchanger, a support, two groups of cooling fans, a motor, a double-output shaft speed reducer, a first transmission shaft, four belt pulleys and two groups of belts, the bottom end of the plate heat exchanger is connected with the working surface, the support is installed on the plate heat exchanger, the two groups of cooling fans are both rotationally installed on the support, the bottom end of the motor is connected with the working surface, the bottom end of the double-output shaft speed reducer is connected with the working surface, the first transmission shaft is rotationally installed on the support, the four belt pulleys are respectively installed on the two groups of cooling fans and the first transmission shaft, and the belts are tensioned and installed between adjacent two groups of belt pulleys; the exhaust pipe conveys the collected tail gas into the plate heat exchanger for cooling, the motor is started, the motor drives the first transmission shaft to rotate through the double-output shaft speed reducer, the first transmission shaft drives the belt pulleys connected therewith to rotate, the belt pulleys and the belts cooperate to drive the two groups of cooling fans to rotate, the two groups of cooling fans accelerate the air flow around the plate heat exchanger, accelerate the tail gas cooling, and save the cooling time.

[0012] Preferably, the distillation mechanism comprises a distillation tower and an alcohol collecting cylinder, the bottom end of the distillation tower is connected with the working surface and communicates with the inside of the liquid conveying pipe, and the bottom end of the alcohol collecting cylinder is connected with the working surface and communicates with the inside of the distillation tower; the liquid conveying pipe conveys the condensed liquid into the distillation tower for distillation and purification, alcohol steam is generated at 78 DEG C when alcohol is boiled, and the alcohol steam enters the alcohol collecting cylinder to be condensed, so that the alcohol concentration is improved.

[0013] Compared with the prior art, the beneficial effects of the utility model are that: a plurality of gas conveying mechanisms convey the tail gas generated after the reaction is completed into the collecting mechanism for storage, the tail gas in the collecting mechanism is cooled in the cooling mechanism, and the condensed liquid after cooling is conveyed to the distillation mechanism through the conveying mechanism for distillation and purification. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 is the structural schematic view of the utility model;

[0015] Figure 2 is the structural schematic view of the gas conveying mechanism of the utility model;

[0016] Figure 3 is the shaft measurement structure schematic diagram of the collecting mechanism of the utility model;

[0017] Figure 4 is the shaft measurement structure schematic diagram of the cooling mechanism and the transfer mechanism of the utility model;

[0018] Figure 5 is the local enlarged shaft measurement structure schematic diagram of the cooling mechanism and the transfer mechanism of the utility model;

[0019] Figure 6 is the structure schematic diagram of the distillation mechanism of the utility model.

[0020] Marked in the drawing: 01, gas conveying mechanism;11, reaction kettle;12, water ring vacuum pump;13, check valve;02, collecting mechanism;21, buffer tank;22, communication pipe;23, collecting pipe;24, pressure gauge;25, exhaust pipe;26, liquid discharge pipe;03, cooling mechanism;31, plate heat exchanger;32, support;33, cooling fan;34, motor;35, double output shaft speed reducer;36, first transmission shaft;37, belt pulley;38, belt;04, transfer mechanism;41, liquid collecting tank;42, liquid level meter;43, second transmission shaft;44, conveying pump;45, liquid conveying pipe;05, distillation mechanism;51, distillation column;52, alcohol collecting cylinder. DETAILED DESCRIPTION

[0021] In order to facilitate understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The utility model can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0022] Example 1

[0023] The utility model discloses a dextran production tail gas emission device, including a plurality of gas transmission mechanism 01, still including collection mechanism 02, cooling mechanism 03, transfer mechanism 04 and distillation mechanism 05, collection mechanism 02 installs on gas transmission mechanism 01 and carries out collection to tail gas, cooling mechanism 03 installs on collection mechanism 02 and carries out cooling to tail gas, transfer mechanism 04 installs on cooling mechanism 03 and condensate liquid carries out transfer, and distillation mechanism 05 installs on transfer mechanism 04 and carries out distillation purification to alcohol solution, gas transmission mechanism 01 includes reation kettle 11, water -ring vacuum pump 12 and check valve 13, and reation kettle 11 installs on production line, and water -ring vacuum pump 12 communicates with the inside of the exhaust port of reation kettle 11, and check valve 13 installs at the exhaust port of water -ring vacuum pump 12, collection mechanism 02 includes buffer tank 21, communication pipe 22, collection pipe 23, two sets of pressure gauge 24, exhaust pipe 25 and liquid discharge pipe 26, and the input of buffer tank 21 is connected with the output of water -ring vacuum pump 12, and the output of communication pipe 22 is connected with the input of collection pipe 23, and two sets of pressure gauge 24 are installed on buffer tank 21 and collection pipe 23 respectively, and the input of exhaust pipe 25 is connected with the output of collection pipe 23, and the input of liquid discharge pipe 26 is connected with the output of collection pipe 23, still including that communication pipe 22 selects the steel wire hose of phi 85, cooling mechanism 03 includes plate heat exchanger 31, support 32, two sets of heat dissipation fan 33, motor 34, double output shaft speed reducer 35, first transmission shaft 36, four sets of belt pulley 37 and two sets of belts 38, and the bottom of plate heat exchanger 31 is connected with the work surface, and support 32 installs on plate heat exchanger 31, and two sets of heat dissipation fan 33 are rotatably installed on support 32, and the bottom of motor 34 is connected with the work surface, and the bottom of double output shaft speed reducer 35 is connected with the work surface, and first transmission shaft 36 is rotatably installed on support 32, and four sets of belt pulley 37 are installed on two sets of heat dissipation fan 33 and first transmission shaft 36 respectively, and belt 38 is tensioned and installed between adjacent two sets of belt pulley 37, transfer mechanism 04 includes liquid collecting tank 41, liquid level meter 42, second transmission shaft 43, delivery pump 44 and liquid delivery pipe 45, and the bottom of liquid collecting tank 41 is connected with the work surface, and liquid collecting tank 41 communicates with the inside of plate heat exchanger 31, and liquid level meter 42 installs on liquid collecting tank 41, and second transmission shaft 43 installs on double output shaft speed reducer 35, and the bottom of delivery pump 44 is connected with the work surface, and delivery pump 44 communicates with the inside of liquid discharge pipe 26 and liquid collecting tank 41, and liquid delivery pipe 45 installs on delivery pump 44.In its work, first, start water ring vacuum pump 12, water ring vacuum pump 12 will be transported to the collection mechanism 02 in the reaction kettle 11 reaction generated tail gas collection, by setting check valve 13 to avoid backflow between groups of water ring vacuum pump 12 tail gas, water ring vacuum pump 12 will be transported to the buffer tank 21 tail gas storage for the first time cooling, tail gas through the communication pipe 22 is transported to the collection pipe 23 for the second time cooling storage, by setting two groups of pressure gauge 24 to detect the pressure in the buffer tank 21 and collection pipe 23, avoid tail gas too much to burst buffer tank 21 and collection pipe 23, the gas in the collection pipe 23 through the exhaust pipe 25 is transported to the plate heat exchanger 31 cooling, collection pipe 23 has been condensed liquid through the exhaust pipe 26 is transported to the transfer mechanism 04, start the motor 34, the motor 34 through the double output shaft reducer 35 drive first transmission shaft 36 rotation, first transmission shaft 36 drive the pulley 37 rotation connected with it, pulley 37 and belt 38 cooperation drive two groups of heat dissipation fan 33 rotation, two groups of heat dissipation fan 33 accelerate the air flow around the plate heat exchanger 31, accelerate the cooling of tail gas, save cooling time, plate heat exchanger 31 in the condensate after cooling is transported to the liquid tank 41, liquid level meter 42 to detect the liquid level in the liquid tank 41, ensure that the liquid level is higher than the connection between the liquid tank 41 and the delivery pump 44, avoid pumping pump 44 to extract the gas, double output shaft reducer 35 drive second transmission shaft 43 rotation, second transmission shaft 43 drive delivery pump 44 liquid pumping, delivery pump 44 will be extracted from the plate heat exchanger 31 and exhaust pipe 26 liquid, and through the liquid pipe 45 is transported to the distillation mechanism 05.

[0024] Example 2

[0025] As Figures 1 to 6As shown, the dextran production tail gas emission device, on the basis of embodiment 1;Distillation mechanism 05 includes distillation column 51 and alcohol collection cylinder 52, the bottom end of distillation column 51 is connected with working surface, and is communicated with the inside of infusion tube 45, the bottom end of alcohol collection cylinder 52 is connected with working surface, and is communicated with the inside of distillation column 51;When it works, first, start water ring vacuum pump 12, water ring vacuum pump 12 transports the tail gas generated by reaction kettle 11 reaction to collect in collection mechanism 02, avoid backflow of tail gas between multiple water ring vacuum pumps 12 by setting check valve 13, water ring vacuum pump 12 transports the tail gas to buffer tank 21 and stores after first cooling, the tail gas is transported to collection pipe 23 for secondary cooling storage through communication pipe 22, the pressure in buffer tank 21 and collection pipe 23 is detected by setting two pressure gauges 24, avoid the buffer tank 21 and collection pipe 23 are burst by too much tail gas, the gas in collection pipe 23 is transported to plate heat exchanger 31 for cooling through exhaust pipe 25, the liquid condensed in collection pipe 23 is transported to transfer mechanism 04 through liquid discharge pipe 26, start motor 34, motor 34 drives first transmission shaft 36 to rotate through double-output shaft reducer 35, first transmission shaft 36 drives the rotation of belt pulley 37 connected therewith, belt pulley 37 and belt 38 cooperate to drive the rotation of two sets of cooling fans 33, two sets of cooling fans 33 accelerate the air flow around plate heat exchanger 31, accelerate the cooling of tail gas, save cooling time, the condensed liquid in plate heat exchanger 31 is transported to liquid collecting tank 41, and the liquid level in liquid collecting tank 41 is detected by liquid level gauge 42, to ensure that the liquid level is higher than the connection between liquid collecting tank 41 and delivery pump 44, avoid the delivery pump 44 extracts gas, double-output shaft reducer 35 drives second transmission shaft 43 to rotate, second transmission shaft 43 drives delivery pump 44 to extract liquid, delivery pump 44 extracts the liquid in plate heat exchanger 31 and liquid discharge pipe 26, and transports it to distillation column 51 through infusion tube 45, and distills and purifies in distillation column 51, and alcohol boiling soup generates steam at 78 DEG C, and alcohol steam enters alcohol collection cylinder 52 and condenses, to improve alcohol concentration.

[0026] The water ring vacuum pump 12, the motor 34, the double-output shaft reducer 35 and the delivery pump 44 are purchased on the market, and the technical personnel in the industry only need to install and operate according to the attached instruction manual, without the technical personnel in the field paying creative labor.

[0027] The above only describes preferred embodiments of the present application, and it should be pointed out that, for ordinary technical personnel in the technical field, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should be regarded as the protection scope of the present application.

Claims

1. A tail gas emission device for dextran production, comprising multiple gas conveying mechanisms (01); characterized in that, It also includes a collection mechanism (02), a cooling mechanism (03), a transfer mechanism (04), and a distillation mechanism (05). The collection mechanism (02) is installed on the gas transmission mechanism (01) and collects the exhaust gas. The cooling mechanism (03) is installed on the collection mechanism (02) and cools the exhaust gas. The transfer mechanism (04) is installed on the cooling mechanism (03) and transfers the condensate. The distillation mechanism (05) is installed on the transfer mechanism (04) and distills and purifies the alcohol solution.

2. The tail gas emission device for dextran production as described in claim 1, characterized in that, The gas delivery mechanism (01) includes a reactor (11), a water ring vacuum pump (12), and a check valve (13). The reactor (11) is installed on the production line. The water ring vacuum pump (12) is connected to the exhaust port of the reactor (11). The check valve (13) is installed at the exhaust port of the water ring vacuum pump (12).

3. The tail gas emission device for dextran production as described in claim 2, characterized in that, The collection mechanism (02) includes a buffer tank (21), a connecting pipe (22), a collection pipe (23), two sets of pressure gauges (24), an exhaust pipe (25), and a drain pipe (26). The input end of the buffer tank (21) is connected to the output end of the water ring vacuum pump (12), the output end of the connecting pipe (22) is connected to the input end of the collection pipe (23), the two sets of pressure gauges (24) are respectively installed on the buffer tank (21) and the collection pipe (23), the input end of the exhaust pipe (25) is connected to the output end of the collection pipe (23), and the input end of the drain pipe (26) is connected to the output end of the collection pipe (23).

4. The tail gas emission device for dextran production as described in claim 3, characterized in that, It also includes a connecting pipe (22) made of φ85 steel wire hose.

5. The tail gas emission device for dextran production as described in claim 1, characterized in that, The cooling mechanism (03) includes a plate heat exchanger (31), a bracket (32), two sets of cooling fans (33), a motor (34), a dual-output shaft reducer (35), a first drive shaft (36), four sets of pulleys (37) and two sets of belts (38). The bottom end of the plate heat exchanger (31) is connected to the working surface. The bracket (32) is mounted on the plate heat exchanger (31). The two sets of cooling fans (33) are rotatably mounted on the bracket (32). The bottom end of the motor (34) is connected to the working surface. The bottom end of the dual-output shaft reducer (35) is connected to the working surface. The first drive shaft (36) is rotatably mounted on the bracket (32). The four sets of pulleys (37) are respectively mounted on the two sets of cooling fans (33) and the first drive shaft (36). The belts (38) are tensioned between two adjacent sets of pulleys (37).

6. The tail gas emission device for dextran production as described in claim 5, characterized in that, The transfer mechanism (04) includes a collection tank (41), a level gauge (42), a second drive shaft (43), a transfer pump (44), and a transfer pipe (45). The bottom end of the collection tank (41) is connected to the working surface, and the collection tank (41) is connected to the inside of the plate heat exchanger (31). The level gauge (42) is installed on the collection tank (41). The second drive shaft (43) is installed on the dual output shaft reducer (35). The bottom end of the transfer pump (44) is connected to the working surface, and the transfer pump (44) is connected to the drain pipe (26) and the inside of the collection tank (41). The transfer pipe (45) is installed on the transfer pump (44).

7. The tail gas emission device for dextran production as described in claim 6, characterized in that, The distillation unit (05) includes a distillation column (51) and an alcohol collection cylinder (52). The bottom end of the distillation column (51) is connected to the working surface and communicates with the inside of the infusion pipe (45). The bottom end of the alcohol collection cylinder (52) is connected to the working surface and communicates with the inside of the distillation column (51).

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