Multi-channel automatic distillation system

Abstract

The multi-channel automatic distillation system comprises a water vapor generation device (01), a distillation reactor parallel connection device (02) and a waste liquid collection device (03), the distillation reactor parallel device (02) is formed by connecting a plurality of distillation reactors (05) in parallel; the water vapor generating device (01) comprises a water adding valve (15), a heater (16), a water tank (17), a distilled water guide pipe (18) and a water vapor guide pipe (19), the heater (16) is arranged on the lower portion of the water tank (17), the water adding valve (15) is arranged in the middle of the water tank (17), the distilled water guide pipe (18) and the water vapor guide pipe (19) are arranged on the two sides of the upper portion of the water tank (17) respectively, and a float flowmeter (12) is arranged on the water vapor guide pipe (19). One end of the water vapor guide pipe (19) is provided with two openings, and one opening is additionally provided with a first electromagnetic valve (13), so that simultaneous continuous operation of multiple channels and closed-loop recovery of waste liquid can be realized, and the working efficiency is greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of distillation, and particularly to a multi-channel automatic distillation system. Background Art

[0002] Distillation is a thermodynamic separation process. It utilizes the different boiling points of components in a mixed liquid or liquid-solid system to evaporate the low-boiling components and then condense them to separate the entire components. It is a combined unit operation of evaporation and condensation. Traditional distillation systems usually consist of parts such as heaters, distillation flasks, condensers, and absorption flasks. Before each distillation, it is necessary to check the airtightness of the system before starting the distillation operation. After the distillation is completed, wait for the distillation flask to cool naturally, pour and collect the waste liquid, and disassemble and clean the entire set of equipment for standby.

[0003] As a routine laboratory operation, multiple distillation tasks are usually completed sequentially by a single piece of equipment. Although some manufacturers have developed multi-channel distillation systems, their application scenarios are relatively single and cannot meet the requirements of multiple distillation conditions at the same time, such as being able to achieve both traditional distillation and steam distillation. At the same time, the vast majority of equipment cannot achieve the automatic cleaning function.

[0004] In summary, the characteristics of traditional distillation equipment such as single-channel operation, cooling and waiting, manual cleaning, and system preheating have led to a significant reduction in distillation efficiency. Concentrated acids are usually used in distillation operations, and manual operations are very likely to cause personal injuries. The waste liquid generated by manual cleaning is not easy to collect and is directly discharged into the sewer, which is likely to cause pipeline corrosion and environmental pollution and needs to be improved. Summary of the Invention

[0005] In view of the above deficiencies in the prior art, the present invention provides a multi-channel automatic distillation system that can achieve automatic system cleaning, multi-channel continuous operation at the same time, closed-loop recovery of waste liquid, greatly improve work efficiency, save manpower, and ensure both the safety of experiments and the environmental harmlessness of experiments.

[0006] The object of the present invention is achieved through the following technical solutions:

[0007] A multi-channel automatic distillation system comprises a water vapor generation device, a parallel connection device of distillation reactors, and a waste liquid collection device; the parallel connection device of distillation reactors is composed of multiple distillation reactors connected in parallel; the water vapor generation device includes a water filling valve, a heater, a water tank, a distilled water conduit, and a water vapor conduit. The heater is arranged at the lower part of the water tank, the water filling valve is arranged in the middle of the water tank, the distilled water conduit and the water vapor conduit are respectively arranged on both sides of the upper part of the water tank, and a rotameter is arranged on the water vapor conduit to detect the water vapor flow. One end of the water vapor conduit has two openings. One opening is equipped with a first electromagnetic valve, and the other opening is respectively connected in parallel to the right-side outlets of the three-way electromagnetic valves of multiple distillation reactors. The distilled water conduit is respectively connected in parallel to the left-side outlets of the three-way electromagnetic valves of multiple distillation reactors;

[0008] The waste liquid collection device includes a waste liquid bucket, a waste liquid collection pipe is arranged on the waste liquid bucket, and the waste liquid collection pipe is connected in parallel to the liquid discharge holes of multiple distillation reactors; an exhaust hole is arranged at the upper part of the waste liquid bucket, a cylindrical lid is arranged in the exhaust hole, a side exhaust hole is arranged on the side of the lid, and a liquid discharge port with a valve is arranged at the lower part of the waste liquid bucket.

[0009] The distillation reactor includes a distillation flask, a heating jacket is arranged at the lower part of the distillation flask, the distillation flask is a four-neck distillation flask, and the four openings of the distillation flask are, from left to right, a feeding hole, a condensation output hole, a steam-water input port, and a liquid discharge hole; the steam-water input port is connected to a three-way electromagnetic valve through a pipeline, and the three-way electromagnetic valve is respectively connected to the distilled water conduit and the water vapor conduit; the feeding hole is connected with a rubber stopper, and the feeding hole is used for adding reaction liquid and samples;

[0010] The condensation output hole is connected to a condenser, the condenser is connected to a second electromagnetic valve, the condenser 8 extends into a distillation absorption liquid storage tank, the condensation output hole is used for connecting the condenser to output the distillation absorption liquid, and the opening and closing are controlled by the second electromagnetic valve;

[0011] The liquid discharge hole is connected to a waste liquid collection pipe, and a third electromagnetic valve is arranged on the waste liquid collection pipe, which is used for collecting and discharging the waste liquid and waste residues after the reaction, and the opening and closing are controlled by the third electromagnetic valve. Beneficial effects

[0012] 1. Through automatic control, the system saves manpower to the greatest extent, improves work efficiency, eliminates human interference, realizes multi-channel distillation under the same conditions, improves work throughput, and improves the stability and reproducibility of distillation work.

[0013] 2. The system can realize the automatic switching between conventional distillation and steam distillation functions, can realize the full-process automatic control, and has stronger adaptability. It can meet the requirements and function switching of conventional distillation and steam distillation.

[0014] 3. During the whole distillation process, the equipment does not need to be disassembled, the waste acid and waste residues do not need to be cooled, the system does not need to be preheated, and it can operate continuously, greatly improving work efficiency.

[0015] 4. The system operation forms a closed loop to maximize the protection of experimenters from strong acid corrosion and burns; the system collects all waste liquids, which is beneficial to environmental protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the multi-channel automatic distillation system described in the present invention.

[0017] Figure 2 It is a schematic structural diagram of the side exhaust hole of the multi-channel automatic distillation system described in the present invention.

[0018] Figure 3 It is a schematic structural diagram of the automatic control device described in the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present invention will be further described in detail below with reference to the drawings and embodiments:

[0020] Embodiment 1:

[0021] A multi-channel automatic distillation system includes a steam generation device 01, a parallel connection device 02 of distillation reactors, and a waste liquid collection device 03; the parallel connection device 02 of distillation reactors is composed of a plurality of distillation reactors 05 connected in parallel; the steam generation device 01 includes a water addition valve 15, a heater 16 with adjustable power, a water tank 17, a distilled water conduit 18, and a steam conduit 19. The heater 16 is arranged at the lower part of the water tank 17, and the power of the heater 16 can be adjusted. The water addition valve 15 is arranged in the middle of the water tank 17, and the water addition valve 15 can add water as needed. The distilled water conduit 18 and the steam conduit 19 are respectively arranged on both sides of the upper part of the water tank 17. A rotameter 12 is arranged on the steam conduit 19 to detect the steam flow rate. One end of the steam conduit 19 has two openings. One opening is equipped with a first solenoid valve 13, and the first solenoid valve 13 is controlled by an automatic control device. The other opening is respectively connected in parallel to the right-side outlets of the three-way solenoid valves 57 of a plurality of distillation reactors 05. The distilled water conduit 18 is respectively connected in parallel to the left-side outlets of the three-way solenoid valves 57 of a plurality of distillation reactors 05;

[0022] The waste liquid collection device 03 includes a waste liquid bucket 31. A waste liquid collection pipe 34 is arranged on the waste liquid bucket 31, and the waste liquid collection pipe 34 is connected in parallel to the liquid discharge holes 54 of a plurality of distillation reactors 05; an exhaust hole 32 is arranged at the upper part of the waste liquid bucket 31. A cylindrical lid 33 is arranged in the exhaust hole 32, and a side exhaust hole 35 is arranged on the side of the lid 33. A drain port 36 with a valve is arranged at the lower part of the waste liquid bucket 31.

[0023] The distillation reactor 05 includes a distillation flask 51, and a heating jacket 50 is provided at the lower part of the distillation flask 51. The distillation flask 51 is a four-neck distillation flask. The four openings of the distillation flask 51 are, from left to right, a feeding hole 52, a condensation output hole 53, a steam-water input port 55, and a liquid discharge hole 54. The steam-water input port 55 is connected to a three-way solenoid valve 57 through a pipeline, and the three-way solenoid valve 57 is respectively connected to a distilled water conduit 18 and a steam conduit 19. The feeding hole 52 is connected to a rubber stopper. The feeding hole 52 is used to add reaction liquid and samples, and its opening and closing are controlled by the rubber stopper.

[0024] The condensation output hole 53 is connected to a condenser 58. The condenser 58 is connected to a second solenoid valve 59. The condenser 58 extends into a distillation absorption liquid storage tank 60. The condensation output hole 53 is used to connect the condenser 58 to output the distillation absorption liquid, and its opening and closing are controlled by the second solenoid valve 59. The liquid discharge hole 54 is connected to a waste liquid collection pipe 34. A third solenoid valve 56 is provided on the waste liquid collection pipe 34, which is used to collect and discharge waste liquid and waste residues after the reaction, and its opening and closing are controlled by the third solenoid valve 56.

[0025] The automatic control device includes an automatic control chip machine, an electronic display input screen, and a rotameter 12. The rotameter 12 realizes an information feedback function. The automatic control chip machine is electrically connected to the electronic display input screen, the rotameter 12 with an information feedback function, a power regulator, and solenoid valves respectively. The power regulator controls the heater 16 to heat. The heater 16 with adjustable power is controlled by the power regulator. The solenoid valves include a first solenoid valve 13, a second solenoid valve 59, a third solenoid valve 56, and a three-way solenoid valve 57. Through electrical connection, the automatic control chip machine enables the entire system to achieve different functions through instruction output.

[0026] Embodiment 2:

[0027] An operation method of a multi-channel automatic distillation system: The present invention realizes the steam distillation function.

[0028] (1) Distillation stage. Add the reaction liquid and samples to the feeding hole 52 and tighten the rubber stopper. Control the solenoid valves to cut off the first solenoid valve 13 of the steam conduit 19 in the steam generating device 01 (steam generator) from the atmosphere. Control the three-way solenoid valve 57 to connect the distillation flask 51 to the steam conduit. Adjust the third solenoid valve 56 to cut off the distillation flask 51 from the waste liquid collection pipe 34. Control the solenoid valves to connect the distillation flask 51 to the condenser 58, and the steam takes away the substances to be measured for condensation and recovery.

[0029] (2) Drainage stage. Control the solenoid valve to cut off the first solenoid valve 13 of the steam conduit 19 of the steam generating device 01 from the atmosphere. Adjust the third solenoid valve 56 to disconnect the distillation flask 51 from the condenser 58, adjust the third solenoid valve 56 to connect the distillation flask 51 to the waste liquid collection pipe 34, control the solenoid valve to connect the distillation flask 51 to the steam conduit 19. At this time, the steam pressure discharges the waste liquid and residue from the distillation flask 51 into the waste liquid collection device.

[0030] (3) Cleaning stage. Control the solenoid valve to cut off the first solenoid valve 13 of the steam conduit 19 in the steam generating device 01 from the atmosphere. Control the solenoid valve to connect the distillation flask 51 to the distilled water conduit 18, adjust the third solenoid valve 56 to disconnect the distillation flask 51 from the condenser 58, adjust the third solenoid valve 56 to connect the distillation flask 51 to the waste liquid collection pipe 34, control the time. When the distilled water fills 1 / 2 of the distillation flask, enter the "drainage stage". Control the time until all the liquid is discharged, and then switch the system to the "cleaning stage" state again. Repeat this process 3 times to achieve a clean state of the distillation flask 51.

[0031] (4) Cleaning the condenser. Control the solenoid valve to cut off the first solenoid valve 13 of the steam conduit 19 in the steam generating device 01 from the atmosphere. Adjust the third solenoid valve 56 to disconnect the distillation flask 51 from the waste liquid collection pipe 34, adjust the third solenoid valve 56 to connect the distillation flask 51 to the condenser 58, and control the time to allow the distilled water to fully rinse the condenser 58. In the drainage stage, ensure that the liquid in the distillation flask 51 is fully discharged.

[0032] (5) Standby. Adjust the third solenoid valve 56 to disconnect the distillation flask 51 from the waste liquid collection pipe 34, adjust the third solenoid valve 56 to connect the distillation flask 51 to the condenser 58, control the solenoid valve to connect the distillation flask 51 to the distilled water conduit 18, and control the solenoid valve to connect the first solenoid valve 13 of the steam conduit 19 of the steam generating device 01 to the atmosphere.

[0033] Example 3:

[0034] An operating method of a multi-channel automatic distillation system: The present invention realizes the conventional non-steam distillation function.

[0035] (1) Distillation stage. Add the reaction liquid and sample into the feeding hole 52 and tighten the rubber stopper. Control the solenoid valve to connect the first solenoid valve 13 of the steam conduit 19 in the steam generating device 01 to the atmosphere. Control the three-way solenoid valve 57 to cut off the steam conduit 19 and the distilled water conduit 18 of the distillation flask 51. Adjust the third solenoid valve 56 to cut off the distillation flask 51 from the waste liquid collection pipe 34. Control the solenoid valve to connect the distillation flask 51 to the condenser 58, and condense and recover the substance to be measured.

[0036] (2) Drainage stage. Control the solenoid valve to cut off the first solenoid valve 13 of the steam conduit 19 in the steam generating device 01 from the atmosphere. Adjust the third solenoid valve 56 to disconnect the distillation flask 51 from the condenser 58. Adjust the third solenoid valve 56 to connect the distillation flask 51 to the waste liquid collection pipe 34. Control the solenoid valve to connect the distillation flask 51 to the steam conduit 19. At this time, the steam pressure discharges the waste liquid and residue from the distillation flask 51 into the waste liquid collection device.

[0037] (3) Cleaning stage. Control the solenoid valve to cut off the first solenoid valve 13 of the steam conduit 19 in the steam generating device 01 from the atmosphere. Control the solenoid valve to connect the distillation flask 51 to the distilled water conduit 18. Adjust the third solenoid valve 56 to disconnect the distillation flask 51 from the condenser 58. Adjust the third solenoid valve 56 to connect the distillation flask 51 to the waste liquid collection pipe 34, and control the time until the distilled water fills half of the distillation flask. Enter the "Drainage stage" state. Control the time until all the liquid is drained, and then switch the system back to the "Cleaning stage" state. Repeat this process 3 times to achieve a clean state of the distillation flask 51.

[0038] (4) Clean the condenser 58. Control the solenoid valve to cut off the first solenoid valve 13 of the steam conduit 19 in the steam generating device 01 from the atmosphere. When the system is in the "Cleaning stage", adjust the third solenoid valve 56 to disconnect the distillation flask 51 from the waste liquid collection pipe 34, and adjust the third solenoid valve 56 to connect the distillation flask 51 to the condenser 58. Control the time to allow the distilled water to fully rinse the condenser 58. Then switch the system to the "Drainage stage" state to fully drain the liquid in the distillation flask 51.

[0039] (5) Standby. Adjust the third solenoid valve 56 to disconnect the distillation flask 51 from the waste liquid collection pipe 34. Adjust the third solenoid valve 56 to connect the distillation flask 51 to the condenser 58. Control the solenoid valve to connect the first solenoid valve 13 of the steam conduit 19 in the steam generating device 01 to the atmosphere. Control the three-way solenoid valve 57 to cut off the steam conduit 19 and the distilled water conduit 18 from the distillation flask 51.

[0040] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A multi-channel automatic distillation system, characterized in that : It includes a steam generation device (01), a parallel connection device of distillation reactors (02), and a waste liquid collection device (03); the parallel connection device of distillation reactors (02) is composed of multiple distillation reactors (05) connected in parallel; the steam generation device (01) includes a water filling valve (15), a heater (16), a water tank (17), a distilled water conduit (18), and a steam conduit (19). A heater (16) is arranged at the lower part of the water tank (17), a water filling valve (15) is arranged in the middle of the water tank (17), the distilled water conduit (18) and the steam conduit (19) are respectively arranged on both sides of the upper part of the water tank (17). A rotameter (12) is arranged on the steam conduit (19). One end of the steam conduit (19) has two openings. A first solenoid valve (13) is installed at one opening, and the right outlet of a three-way solenoid valve (57) of each of the multiple distillation reactors (05) is connected in parallel to the other opening. The left outlet of the three-way solenoid valve (57) of each of the multiple distillation reactors (05) is connected in parallel to the distilled water conduit (18).

2. The multi-channel automatic distillation system according to claim 1, wherein : The waste liquid collection device (03) includes a waste liquid bucket (31). A waste liquid collection pipe (34) is arranged on the waste liquid bucket (31), and the waste liquid collection pipe (34) is connected in parallel to the liquid discharge holes (54) of multiple distillation reactors (05); an exhaust hole (32) is arranged at the upper part of the waste liquid bucket (31). A cylindrical lid (33) is arranged in the exhaust hole (32), and a side exhaust hole (35) is arranged on the side of the lid (33). A liquid discharge port (36) with a valve is arranged at the lower part of the waste liquid bucket (31).

3. The multi-channel automatic distillation system according to claim 2, characterized in that : The distillation reactor (05) includes a distillation flask (51). A heating jacket (50) is arranged at the lower part of the distillation flask (51). The distillation flask (51) is a four-neck distillation flask. The four openings of the distillation flask (51) are, from left to right, a feeding hole (52), a condensation output hole (53), a steam-water input port (55), and a liquid discharge hole (54).

4. The multi-channel automatic distillation system according to claim 3, wherein : The steam-water input port (55) is connected to a three-way solenoid valve (57) through a pipeline. The three-way solenoid valve (57) is respectively connected to the distilled water conduit (18) and the steam conduit (19). The feeding hole (52) is connected to a rubber stopper, and the feeding hole (52) is used for adding reaction liquid and samples.

5. The multi-channel automatic distillation system according to claim 4, characterized in that : The condensation output hole (53) is connected to a condenser tube (58). The condenser tube (58) is connected to a second solenoid valve (59). The condenser tube (58) extends into a distillation absorption liquid storage tank (60). The condensation output hole (53) is used to connect the condenser tube (58) to output the distillation absorption liquid, and its opening and closing are controlled by the second solenoid valve (59); the liquid discharge hole (54) is connected to the waste liquid collection pipe (34). A third solenoid valve (56) is arranged on the waste liquid collection pipe (34) for collecting and discharging the waste liquid and waste residues after the reaction, and its opening and closing are controlled by the third solenoid valve (56).

6. The multi-channel automatic distillation system according to claim 1, characterized in that : The solenoid valves include a first solenoid valve (13), a second solenoid valve (59), a third solenoid valve (56), and a three-way solenoid valve (57).

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