WO2019024132A1

WO2019024132A1 - Distillation system

Info

Publication number: WO2019024132A1
Application number: PCT/CN2017/097421
Authority: WO
Inventors: 张永森; 张贤开
Original assignee: 张永森
Priority date: 2017-08-01
Filing date: 2017-08-14
Publication date: 2019-02-07
Also published as: CN207324119U

Abstract

A distillation system. Multiple distilling boilers are provided, and the distilling boilers are connected by means of steam circulation pipes, so that steam can be circularly used in the distilling boilers, the use efficiency of the steam is improved, the distillation time can be greatly shortened, and the distillation efficiency is improved. Moreover, at least one mobile partition screen (16) is provided in each distilling boiler, materials are divided into multiple layers, so as to reduce the weight of a single layer of materials, thus reducing the problem that the steam fails to pass through because the lower materials are more compacted due to material gravity and material softening. In addition, a redistillation apparatus is additionally provided, and the filling of a redistillation boiler (40) with a water layer after water and oil are separated can improve the yield of oil. An air extracting apparatus is additionally provided to pump out non-condensing gas by means of a vacuum pump to form a certain vacuum degree of a reduced pressure distillation, so as to decrease the temperature of the system and reduce the pyrolysis loss of a product, thereby improving the quality.

Description

Distillation system

Technical field

The present invention relates to a distillation system for the rapid extraction of plant aromatic volatile oil.

Background technique

There is a common problem in the extraction device of common plant aromatic volatile oil: the distillation time is too long, the energy consumption is large, and the quality is poor. The reasons are as follows: 1. Generally, as the distillation progresses, the amount of oil discharged from the distilled material is continuously decreasing, and in order to ensure the heat transfer and mass transfer, the amount of steam cannot be reduced, indicating that the steam is not saturated, at the end of the distillation. Before the steam has not worked, it directly enters the cooling system and is wasted; 2. As the steam distillation process progresses, the distilled material is softened by heat, and gradually presses down under the action of its own gravity. Adhesion to each other hinders the passage of vapor through the layer. A considerable portion of the vapor bypasses the layer along the inner wall of the distiller to form a "short circuit", which seriously wastes steam, resulting in rapid deterioration of heat transfer and mass transfer, and the distillation efficiency decreases linearly.

Later, people tried to make the steam and materials fully contact and improve the extraction efficiency. "Breathing cylinder distiller" is only a "partial" solution to the problem, there are still problems such as "material softening, compaction, adhesion, gas blocking", and the disadvantage is that the vapor exiting the venting cylinder does not pass through the layer. It has been artificially "short-circuited", wasting steam, and may be self-defeating. Another example: "Inner-rotation magnetic distillation type distillation distiller (Patent No. 91220663.2)", and "An aromatic oil distillation device (Patent No. 88104728.7)", is powered by high-pressure steam, stirs animal feed to achieve sufficient vapor and material The purpose of the contact, even if it has a certain effect, is that the temperature of the high-pressure steam will reduce the quality and quantity of the product. Because the form of the material is different, according to the former scheme, it cannot be completely blown, according to the latter. The solution is limited to distillation in water, and distillation in water can result in a loss of product due to "hydrolysis". Another example: "Spiral Dry Distillator (Patent No. 00222260.4)" is a better solution at present, but the drawback is: waste steam, the flow of steam through the material is too short, the oil-containing vapor is far from saturation when it leaves the layer, Because of the large number of nozzles, it is necessary to pressurize the vapor, artificially increasing the temperature of the vapor, which is detrimental to the quality of the product. While "a distiller (patent number ZL201020139135.3)", although improved, there is a problem of partial "short circuit" of steam.

Summary of the invention

The object of the invention is to solve the problem that the material is heated, softened, compacted, adhered and blocked by steam distillation, and the distillation time is too long, the energy consumption is large, and the quality is poor, thereby providing a fast and energy-saving problem. Simple and easy distillation system.

In order to achieve the above objectives, the following technical solutions are adopted:

A distillation system comprising a distillation device, a condenser and a water separator in series, the distillation device comprises two or more distillation pots, the distillation pot is provided with a steam inlet and an oily steam outlet, and the steam inlet is arranged in the distillation pot The bottom is connected to the steam input pipe; the oil-containing steam outlet is arranged at the top of the distillation pot, and the condenser is connected through the oil-containing steam output pipe, and the steam inlet and the oil-containing steam outlet are respectively provided with valves, and the steam distillation pipes are connected in series through the steam circulation pipe. The oil-containing steam outlet of a distillation pot is connected to the steam inlet of the distillation pot connected in series through a steam circulation pipe, and the oil-containing steam outlet of the last distillation pot connected in series is connected to the steam inlet of the first distillation pot through a steam circulation pipe to form a distillation. The circulation circuit and the steam circulation pipe are all provided with valves.

Further, a double distillation pot is added between the distillation device and the condenser, the bottom of the double distillation pot is provided with an oil-containing steam inlet, the top of which is provided with an oil-containing steam outlet, the side wall of which is provided with an oil-water separation water layer inlet, and the oil-containing steam output pipe is connected The oily steam inlet of the double distillation pot, the oily steam outlet of the double distillation pot is connected to the condenser, and the oil water separator is connected to the oil water separation water layer inlet.

Further, after the oil-water separator is installed with an air suction device, the air suction device includes a buffer tank, and the buffer tank communicates with the air outlet end of the oil water separator, and a vacuum pump is disposed at the air outlet end of the buffer tank for eliminating non-condensing in the buffer tank. The gas, the top of the buffer tank is provided with a vacuum gauge for measuring the pressure inside the buffer tank.

Further, at least one movable sieve is disposed inside each of the distillation pots, and the movable sieve is placed on the inner support support of the distillation pot.

Further, a support support is provided at a plurality of heights in each of the distillation pots, and a plurality of movable screens can be placed on support supports of different heights as needed.

The beneficial effects of the invention:

The distillation system of the invention has a plurality of distillation pots, and each of the distillation pots is connected through a steam circulation pipe, so that steam can be recycled in each distillation pot, thereby improving the use efficiency of steam, greatly shortening the distillation time and improving the distillation efficiency.

By setting up the double distillation unit, the oil yield of the product is greatly improved.

The air suction device is added, and the non-condensable gas is pumped away by the vacuum pump to form a vacuum distillation with a certain degree of vacuum, which reduces the temperature of the system, reduces the pyrolysis loss of the product, and makes the oil quality better.

At least one movable screen is arranged inside the distillation pot, and the weight of the single-layer material is reduced by spacing the materials into at least two layers, thereby reducing the weight of the material and the softening of the material, so that the lower the material is pressed tightly. The problem that steam cannot pass.

DRAWINGS

Figure 1 is a schematic view showing the structure of a distillation system of the present invention.

2 is a schematic view showing the installation structure of the movable screen of the distillation system of the present invention.

Detailed ways

The content of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

This embodiment is a specific embodiment of distilled cinnamon oil:

As shown in FIG. 1, a distillation system includes a distillation apparatus including a first distillation pot 10, a second distillation pot 20, and a third distillation pot 30. The first distillation pot 10 is provided with a steam inlet 11 and an oil-containing steam outlet. 12, the second distillation pot 20 is provided with a steam inlet 21 and an oil-containing steam outlet 22, the third distillation pot 30 is provided with a steam inlet 31 and an oil-containing steam outlet 32, and the

steam inlets

11, 21, 31 communicate with the external steam through the steam input pipe L1. The generator, the oil-containing

steam outlets

12, 22, 32 are connected to the external condenser through the oil-containing steam output pipe L2, and the

valves

13, 13 and 33 are respectively arranged on the steam input pipe L1, and the oil-containing steam output pipe L2 is respectively provided with a

valve

14, 24, 34, the first distillation pot 10, the second distillation pot 20, the third distillation pot 30 are connected by two through the steam circulation pipe L3, according to the direction of steam circulation, the steam outlet 12 of the first distillation pot 10 and the second The steam inlet 21 of the distillation pot 20 is communicated through the steam circulation line L3, and the steam outlet 22 of the second distillation pot 20 is in communication with the steam inlet 31 of the third distillation pot 30 through the steam circulation line L3, and the steam of the third distillation pot 30 is steamed. A first outlet 32 and steam inlet 10 of the distillation pot 11 communicates through the conduit L3 steam cycle, steam circulation duct are provided with a

valve

15,25,35 L3. The first distillation pot 10, the second distillation pot 20, and the third distillation pot 30 are respectively connected to the steam input pipe L1, the oil-containing steam output pipe L2, and the steam circulation pipe L3 by a sealing interface, and each pipe is provided with a valve, when the valve is closed To ensure the tightness of the distillation pot.

The work is as follows: when the steam supply, water supply and power supply are normal, the valve is closed and the charging is started. The charging sequence is that the first distillation pot 10, the second distillation pot 20, and the third distillation pot 30 are sequentially filled;

Opening the

valves

13, 14 of the first distillation pot 10, the path of the steam is: 13-10-14-L2;

After the first distillation pot 10 is distilled for a period of time, the

valves

15 and 24 of the second distillation pot 20 are opened, the valve 14 is closed, and the materials in the first distillation pot 10 and the second distillation pot 20 are distilled. The steam path is: valve 13- a distillation pot 10 - valve 15 - second distillation pot 20 - valve 24 - oily steam output pipe L2;

After the second distillation pot 20 is distilled for a while, the

valves

23, 25, 34 are opened, the

valves

13, 15, 24 are closed, and the materials in the second distillation pot 20 and the third distillation pot 30 are started to be distilled. At this time, the first distillation The material can be replaced again in the pot, the steam path is: valve 23 - second distillation pot 20 - valve 25 - third distillation pot 30 - valve 34 - oily steam output pipe L2;

After the material in the third distillation pot 30 is distilled for a period of time, the

valves

33, 35, 14 are opened, the

valves

23, 25, 34 are closed, and the materials in the third distillation pot 30 and the first distillation pot 10 are started to be distilled. The material in the second distillation pot can be replaced again, the steam path is: valve 33 - third distillation pot 30 - valve 35 - first distillation pot 10 - valve 14 - oily steam output line L2;

After the first distillation pot 10 is distilled for a while, the above operation is repeated to form a continuous cyclic distillation process.

When two distillation pots are distilled, another distillation pot can be refueled, and the time is utilized efficiently, so that the work is compact and the distillation efficiency is improved.

Since the gravity of the material in the distillation pot is vertically downward, the pressure of the lowermost material is increased, and the material is softened by heat, and the lower the material is pressed tightly, which seriously hinders the passage of steam.

Therefore, according to the characteristics of various materials, at least one movable sieve 16 is disposed in each of the three distillation pots as shown in Figs. 1 and 2, and the movable sieve 16 is placed on the support support 17 welded to the inner wall of the distillation pot. The movable screen 16 separates all the materials previously placed on the punching plate 18 in the distillation pot into at least two layers, which greatly reduces the pressure of the material due to its own gravity. Water vapor is input from the steam input port at the bottom of the distillation pot. When the steam passes through the material in each layer of the distillation pot, the material has a certain drum action due to the light weight of the material, so that the material can not be adhered, and the steam is kept smooth, and the cooling system is always kept. The high concentration of oil and water is mixed with steam, thus achieving high-efficiency utilization of steam, and the effect of rapid extraction is remarkable.

After the oil-water mixture is separated by the oil-water separator, a small amount of super-saturated oil is added to the water layer. To further save steam, the double distillation pot 40 is added to recover the oil of the water layer.

An oil-containing steam inlet 41 is disposed at the bottom of the double distillation pot 40, and an oil-containing steam outlet 42 is disposed at the top thereof. An oil-water separation water layer inlet 43 is disposed on the side wall, the oil-containing steam outlet pipe L2 is connected to the oil-containing steam inlet 41 of the double distillation pot, and the oil-containing steam outlet 42 is connected to the condenser 50. The steam passes through the double distillation pot 40 and enters the condenser 50. After the condensation, the water-oil mixture enters the oil-water separator 60. The oil-water separator is provided with a lower outlet 61 and an upper outlet 62. The upper outlet 62 is provided with an venting valve 63. When the distillation is completed, it is necessary to stop the supply of steam, and the venting valve 63 is opened to bring the pressure in the system to atmospheric pressure. The lower outlet 61 is provided with a bottom valve 64. When it is necessary to collect the cinnamon oil, the supply of steam is stopped, and the evacuation valve 63 is opened. When the pressure in the system reaches atmospheric pressure, the bottom valve 64 is opened, and the cinnamon oil can be discharged from the lower outlet 61.

After double distillation, the oil yield can be increased by about 10%.

Since plant-based aromatic oils are generally sensitive to heat, cinnamon oil is no exception, so that it is necessary to add an air suction device including a buffer tank 70 that connects the upper outlet 62 of the water separator 60, the buffer tank 70 A vacuum pump 80 is disposed at the outlet end for removing non-condensing gas in the buffer tank 70, reducing the temperature in the distillation system, reducing the pyrolysis loss of the cinnamon oil, and improving the quality of the cinnamon oil.

A vacuum gauge 71 is also provided at the top of the buffer tank for measuring the degree of vacuum inside. The bottom of the buffer tank 70 is provided with a bottom valve 72 which can be opened for cleaning when the buffer tank needs to be cleaned.

The detailed description above is a detailed description of the possible embodiments of the present invention, which is not intended to limit the scope of the invention, and the equivalents and modifications of the present invention should be included in the scope of the patent. in.

Claims

A distillation system comprising: a distillation unit, a condenser and a water-oil separator connected in series, the distillation apparatus comprising two or more distillation pots, the distillation pot being provided with a steam inlet and an oil-containing steam outlet The steam inlet is disposed at a bottom of the distillation pot and communicates with a steam input pipe; the oil-containing steam outlet is disposed at a top of the distillation pot, and communicates with the condenser through an oil-containing steam output pipe, the steam inlet and the oil A steam outlet is disposed at each of the steam outlets, and the steam distillation pipes are connected in series through a steam circulation pipe. The oil-containing steam outlet of the first distillation pot is connected to the steam inlet of the distillation tank connected in series through the steam circulation pipe, and the last of the series is connected. The oil-containing steam outlet of a distillation pot is connected to the steam inlet of the first distillation pot through the steam circulation line to form a distillation circulation circuit, and the steam circulation line is provided with a valve.
The distillation system according to claim 1, wherein a double distillation pot is further disposed between the distillation unit and the condenser, the bottom of the double distillation pot is provided with an oil-containing steam inlet, and the top of the distillation pot is provided with an oil-containing steam outlet. The side wall is provided with an oil-water separation water inlet, the oil-containing steam output pipe is connected to the oil-containing steam inlet of the double distillation pot, and the oil-containing steam outlet of the double distillation pot is connected to the condenser, and the oil-water separator is connected The oil water separates the inlet of the water layer.
The distillation system according to claim 1 or 2, wherein the oil-water separator is provided with an air suction device, and the air suction device includes a buffer tank, and the buffer tank communicates with the air outlet of the oil-water separator. The outlet end of the buffer tank is provided with a vacuum pump for removing non-condensing gas in the buffer tank, and the top of the buffer tank is provided with a vacuum gauge for measuring the pressure in the buffer tank.
The distillation system according to claim 1, wherein each of the distillation pots is further provided with at least one movable screen, and the movable screen is placed on the inner wall support support of the distillation pot.
The distillation system according to claim 4, wherein said support support is provided at a plurality of heights in each of the distillation pots, and a plurality of movable screens can be placed on support supports of different heights as needed. .