CN104759114B - A kind of steam for nicotine extraction occurs and sour absorption plant - Google Patents

Abstract

The invention discloses a water vapor generating and acid absorbing device for extracting nicotine. It is provided with a jacketed enamel kettle. The upper end cover of the jacketed enamel kettle is provided with a central hole and two side holes. The bottom of the sleeve-type enamel kettle is connected to the drain pipe, the central hole is connected to the cylindrical enamel cylinder, and the connection is provided with a porous partition; the side holes on both sides of the jacket-type enamel kettle are respectively connected with a temperature control probe casing and a The nicotine-containing water vapor introduction tube; the cylindrical enamel cylinder is equipped with porcelain filler, and the cylinder cover is provided with an acid absorption liquid feeding pipe and a water vapor outlet pipe, and one end of the acid absorption liquid feeding pipe is connected to a container equipped with an acid absorption stock solution. The other end of the high-level tank extends into the cylindrical enamel cylinder and is inserted into the interior of the porcelain filler, and the steam outlet pipe is connected with the steam distillation tank. The invention can generate water vapor, has the functions of acid absorption and concentration, saves resources, and can avoid the denaturation of solanesol in the residue after extraction.

Description

A water vapor generation and acid absorption device for nicotine extraction

technical field

The invention belongs to the technical field of alkaloid extraction equipment, and in particular relates to a water vapor generation and acid absorption device for nicotine extraction.

Background technique

Waste tobacco contains very valuable nicotine and solanesol. To extract nicotine and solanesol, there are organic solvent extraction-back extraction method, carbon dioxide supercritical extraction method and carbonization decarboxylation (dry distillation) method. The organic solvent extraction-back extraction method not only consumes a large amount of organic solvents, but also pollutes the environment; the carbon dioxide supercritical extraction method not only requires expensive equipment but also costs too much; Solanesol is transformed into the enantiomers, resulting in a decrease in its biological activity. Under alkaline conditions, the active ingredient nicotine is extracted from tobacco waste by steam distillation, which can effectively separate nicotine from other components in tobacco, and the biological activity of solanesol in the residue can also remain unchanged. However, the traditional steam distillation method, on the one hand, requires two devices: a steam generator and an acid absorption device; on the other hand, a large amount of water vapor is condensed into water in the acid absorption device, which not only wastes a lot of energy, but also dilutes the The acid absorbs the solution, so that the post-treatment process must also be equipped with concentration equipment, and the economic benefits are not good. It is for this reason that traditional steam distillation extraction of nicotine is generally only used for laboratory analysis of nicotine content in tobacco samples.

Contents of the invention

The purpose of the present invention is to provide a water vapor generation and acid absorption device for nicotine extraction, which can generate water vapor, and has the functions of acid absorption and concentration, saves resources, and can avoid the Solanesol is denatured.

The technical solution adopted in the present invention is: a water vapor generation and acid absorption device for nicotine extraction, which is provided with a jacketed enamel kettle filled with acid absorption liquid inside, and the top of the jacketed enamel kettle is It is sealed by the upper end cover. There is a central hole and two side holes on the upper end cover. The bottom of the jacketed enamel kettle is connected to the drain pipe. The drain pipe is equipped with a glass valve. The central hole of the upper end cover is connected to the cylindrical enamel cylinder. , and the connection is provided with a porous partition; the two side holes of the upper end cover are respectively connected with a temperature control probe casing and a nicotine-containing water vapor introduction tube, and the nicotine-containing water vapor introduction tube is inserted into the acid absorption tube through the side hole in the liquid;

The cylindrical enamel cylinder is filled with porcelain filler, the top of the cylindrical enamel cylinder is sealed by a cylinder cover, and the cylinder cover is provided with an acid absorption liquid feeding pipe and a water vapor outlet pipe, and one end of the acid absorption liquid feeding pipe is connected with an acid The other end of the high-level tank for absorbing the raw liquid extends into the porcelain packing of the cylindrical enamel cylinder, and the steam outlet pipe is connected with the steam distillation tank.

Further optimization, the outer surfaces of the jacketed enamel kettle and the cylindrical enamel cylinder are provided with insulation layers.

Further optimization, the water vapor outlet pipe is provided with a pressure vacuum gauge, a temperature probe, a water vapor flow control valve, an exhaust fan and a sampling valve in sequence along the water vapor flow direction.

For further optimization, the side walls of the jacketed enamel kettle are respectively provided with lighting ports and viewing ports.

For further optimization, the nicotine-containing water vapor introduction pipe is provided with a nicotine-containing water vapor flow control valve.

Further optimization, the acid absorption liquid flow control valve is arranged on the acid absorption liquid feeding pipe.

For further optimization, a sealing device is provided between the drain pipe and the jacketed enamel kettle, and at the port where the acid absorption liquid flow control valve is connected to the head tank and the acid absorption liquid feeding pipe.

Beneficial effects of the present invention

Compared with the prior art, the present invention has at least the following advantages and beneficial effects:

1. The present invention integrates acid absorption and water vapor generation, and also saves the nicotine sulfate concentration equipment in the follow-up process, which greatly saves energy and is also beneficial to environmental protection. It can realize the technology of extracting alkaloids by steam distillation industrialization.

2. The present invention can realize extraction of nicotine at a lower temperature, avoiding the denaturation of solanesol, a high value-added component in the residue after extraction of nicotine.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Reference signs: 1, acid absorption liquid, 2, jacketed enamel kettle, 3, upper end cover, 4, drain pipe, 5, glass valve, 6, cylindrical enamel cylinder, 7, porous partition, 8, control Temperature probe casing, 9. Nicotine-containing water vapor inlet tube, 10. Porcelain filler, 11. Acid absorption liquid feeding tube, 12. Water vapor outlet tube, 13. High tank, 14. Pressure vacuum gauge, 15. Temperature Probe, 16. Water vapor flow control valve, 17. Exhaust fan, 18. Sampling valve, 19. Sealing device, 20. Acid absorption stock solution, 21. Nicotine-containing water vapor flow control valve, 22. Acid absorption liquid flow control Valve, 23, insulation layer.

detailed description

In order to make the content of the present invention more obvious and understandable, the present invention will be described in detail below in conjunction with specific examples.

As shown in the figure, a water vapor generation and acid absorption device for nicotine extraction is provided with a jacketed enamel kettle 2 filled with an acid absorption liquid 1 inside, and the top of the jacketed enamel kettle 2 passes through The upper end cover 3 is sealed. The upper end cover 3 is provided with a central hole and two side holes. The bottom of the jacketed enamel kettle 2 is connected to the drain pipe 4. The drain pipe 4 is provided with a glass valve 5. The central hole of the upper end cover 3 It is connected with the cylindrical enamel cylinder 6, and the joint is provided with a porous partition 7; the two side holes of the upper end cover 3 are respectively connected with a temperature control probe sleeve 8 and a nicotine-containing water vapor introduction pipe 9, and the nicotine-containing water vapor The steam introduction pipe 9 is inserted into the acid absorption liquid 1 through the side hole;

The cylindrical enamel cylinder 6 is filled with porcelain filler 10, the top of the cylindrical enamel cylinder 6 is sealed by a cylinder cover, and the cylinder cover is provided with an acid absorption liquid feeding pipe 11 and a water vapor outlet pipe 12, and the acid absorption liquid feeding pipe One end of 11 is connected to the high-level tank 13 equipped with the acid absorption stock solution 20, and the other end extends into the porcelain filler 10 of the cylindrical enamel cylinder 6. Leave holes to connect, and the other end of the water vapor outlet pipe 12 is connected with the water vapor distillation tank.

In order to make the present invention have a better use effect, the outer surfaces of the jacketed enamel kettle 2 and the cylindrical enamel cylinder 6 are all provided with an insulating layer 23, and the side walls of the jacketed enamel kettle 2 are respectively provided with The lighting port and the viewing port are arranged on both sides of the jacketed enamel kettle 2 opposite to the lighting port and the viewing port. A sealing device 19 is provided between the drain pipe 4 and the jacketed enamel kettle 2 , and at the port where the acid absorption liquid flow control valve 22 connects with the head tank 13 and the acid absorption liquid feeding pipe 11 .

In the technical solution of the present invention, on the described water vapor outlet pipe 12, a pressure vacuum gauge 14, a temperature probe 15, a water vapor flow control valve 16, an exhaust fan 17 and a sampling valve 18 are sequentially arranged along the water vapor flow direction. The nicotine-containing water vapor introduction pipe 9 is provided with a nicotine-containing water vapor flow control valve 21 , and the acid absorption liquid feeding pipe 11 is provided with an acid absorption liquid flow control valve 22 .

The usage method of the present invention:

Step 1: Prepare an acid absorption stock solution 20 of appropriate concentration and add it to the head tank 13 .

Step 2: Open the water vapor flow control valve 16 and the sampling valve 18, close the glass valve 5 and the nicotine-containing water vapor flow control valve 21 on the nicotine-containing water vapor introduction pipe 9, and turn on the lighting of the jacketed enamel kettle 2 , open the acid absorption liquid flow control valve 22 on the acid absorption liquid feeding pipe 11, put about one-third of the acid liquid into the jacketed enamel kettle 2, and close the acid absorption liquid flow control valve 22.

Step 3: Set the control temperature of the heating mantle of the jacketed enamel kettle 2 to 110°C and start heating. When the temperature inside the jacketed enamel kettle 2 reaches a slight boil of about 105°C, water vapor will emerge from the sampling valve 18. Turn on the exhaust fan 17 and the nicotine-containing water vapor flow control valve 21, close the sampling valve 18, and adjust the acid absorption liquid flow control valve 22 to drip the acid absorption stock solution 20 at a rate of about 1 drop per second.

Step 4: Detect water vapor through the water vapor sampling valve 18. If the pH of the water vapor is ≥ 8 and the pH of the acid absorption liquid 1 is < 3, increase the drip rate of the acid absorption liquid or reduce the nicotine-containing water vapor flow control valve twenty one.

Step 5. With the increase of the amount of nicotine absorbed by the acid absorption solution 1, the rate of absorption of nicotine decreases, and the vapor pressure decreases. Therefore, the drip rate of the acid absorption stock solution 20 should be increased, and the pressure vacuum gauge 14 should be observed carefully to adjust Increase the control temperature of the heating jacket or reduce the water vapor flow control valve 16 to maintain the system pressure at about 1 atmosphere;

Step 6, when the amount of the acid absorption liquid 20 in the head tank is insufficient, timely release an appropriate amount of the acid absorption liquid 1 in the jacketed enamel kettle 2 through the glass valve 5 and transfer it to the head tank 13;

Step 7: Sampling and detecting the pH value of the acid absorption solution 1 in the jacketed enamel kettle 2 through the glass valve 5, when the acid absorption stock solution 20 in the head tank 13 is discharged, and the pH of the acid absorption solution 1 in the jacketed enamel kettle 2 =5, that is, the acid absorption liquid saturated with nicotine is obtained;

Step 8: Close the nicotine-containing water vapor flow control valve, open the glass valve 5 to discharge the nicotine-saturated acid solution, and close it.

Although the set of steam distillation and acid absorption equipment involved in the present invention is described by taking the extraction of nicotine as an example, its application is not limited to the extraction of nicotine. For other alkaloids resistant to 110°C, the process parameters should be adjusted appropriately The same can be used.

The technical solutions and implementation methods listed in the present invention are not limiting, and solutions that are equivalent to or have the same effect as the technical solutions and implementation methods listed in the present invention are within the protection scope of the present invention.

Claims (7)

1. A water vapor generation and acid absorption device for nicotine extraction, characterized in that: a jacketed enamel kettle (2) is provided with an acid absorption liquid (1) inside, and the jacketed enamel The top of the kettle (2) is sealed by the upper end cover (3). The upper end cover (3) is provided with a central hole and two side holes. The bottom of the jacketed enamel kettle (2) is connected to the drain pipe (4). The tube (4) is provided with a glass valve (5), the center hole of the upper end cover (3) is connected with the cylindrical enamel cylinder (6), and the joint is provided with a porous partition (7); the two ends of the upper end cover (3) The two side holes are respectively connected with the temperature control probe casing (8) and the nicotine-containing water vapor introduction tube (9), and the nicotine-containing water vapor introduction tube (9) is inserted into the acid absorption liquid (1) through the side holes ; The cylindrical enamel cylinder (6) is filled with porcelain filler (10), the top of the cylindrical enamel cylinder (6) is sealed by a cylinder cover, and the cylinder cover is provided with an acid absorption liquid feeding pipe (11) and water vapor outlet Pipe (12), one end of the acid absorption liquid feeding pipe (11) is connected to the high-level tank (13) equipped with the acid absorption stock solution (20), and the other end extends into the porcelain filler (10) of the cylindrical enamel cylinder (6), The steam outlet pipe (12) is connected with a steam distillation tank. 2. A water vapor generation and acid absorption device for nicotine extraction according to claim 1, characterized in that: the jacketed enamel kettle (2) and the exterior of the cylindrical enamel cylinder (6) All are provided with insulation layer (23). 3. A water vapor generation and acid absorption device for nicotine extraction as claimed in claim 1, characterized in that: on the water vapor outlet pipe (12), there are pressure vacuums in sequence along the water vapor flow direction. Gauge (14), temperature probe (15), water vapor flow control valve (16), exhaust fan (17) and sampling valve (18). 4. A water vapor generation and acid absorption device for nicotine extraction as claimed in claim 1, characterized in that: the side walls of the jacketed enamel kettle (2) are respectively provided with lighting ports and viewport. 5. A water vapor generation and acid absorption device for nicotine extraction as claimed in claim 1, characterized in that: said nicotine-containing water vapor introduction pipe (9) is provided with nicotine-containing water vapor Flow control valve (21). 6. A steam generation and acid absorption device for nicotine extraction as claimed in claim 1, characterized in that: the acid absorption liquid feeding pipe (11) is provided with an acid absorption liquid flow control valve ( twenty two). 7. A water vapor generation and acid absorption device for nicotine extraction according to claim 1, characterized in that: between the drain pipe (4) and the jacketed enamel kettle (2), A sealing device (19) is provided at the port where the acid absorption liquid flow control valve (22) is connected to the head tank (13) and the acid absorption liquid feeding pipe (11).