KR102032483B1 - The method and apparatus for collection of bio-oil produced from slow pyrolysis - Google Patents

Abstract

Disclosed are a bio oil capture method and apparatus produced through slow pyrolysis. Specifically, the first collecting unit 100 including the cooling spray device 110; A first outlet 130 positioned at one side of the first collecting part 100; And a fluid separator 300 connected in fluid communication with the first collector 100, wherein the fluid separator 300 includes: a water storage tank 310; And a tar storage tank 320 positioned below the moisture storage tank 310, in fluid communication with the moisture storage tank 310, and including a heating device 322 therein. A pyrolysis product capture device and a low speed pyrolysis product capture method are disclosed.

Description

The method and apparatus for collection of bio-oil produced from slow pyrolysis}

The present invention relates to a method and an apparatus for capturing bio oil generated through low speed pyrolysis, and more particularly, to collecting high quality bio oil by effectively collecting tar contained in a mixture of tar and water generated at low speed pyrolysis and reducing water content. It relates to a low-speed pyrolysis product capture device that can be produced and a product capture method using the same.

As the damage caused by the depletion of coal and petroleum fuels such as by-products from burning and by-products is highlighted, the need for alternative fuels is increasing.

In particular, researches are being actively conducted to replace existing energy sources by using biomass, ie, plants that synthesize organic matter by receiving solar energy, and biological organisms such as animals and microorganisms using them as food.

Pyrolysis is a technique for utilizing biomass as an alternative fuel. Pyrolysis is a heat treatment method that can produce bio char and tar (bio oil, pyrolysis gas, etc.) through thermal decomposition. To 1,000 ° C.).

Pyrolysis can be largely divided into low speed, medium speed, and rapid pyrolysis depending on the speed, and the slower heating rate and the lower temperature tend to increase the proportion of solids produced.

Therefore, low speed pyrolysis, including low temperature, especially low temperature conditions, is the most suitable method for biofuel production. Slow pyrolysis is a temperature of about 5 to 10 ℃ per minute to slowly increase the temperature of decomposition biomass to maintain a temperature of about 400 to 600 ℃, pyrolysis is carried out for a long time of several hours to a week.

Bio Soap produced through low-speed pyrolysis can improve soil quality and semi-permanently sequester greenhouse gases when used in soil, and use other products, bio oil and gas, as fuel and heat source to reduce greenhouse gas and energy efficiency. The improvement effect can be achieved.

On the other hand, materials produced as a result of low speed pyrolysis include not only solid biofuel, but also bio-oil in liquid component and pyrolysis gas in gas component. However, bio oils produced during low-speed pyrolysis for bio fuel generation contain a large amount of water therein, and thus, in order to utilize bio oils as alternative fuels, a process of removing water contained therein is required.

Korean Patent Publication No. 10-0508997 discloses a treatment method for recycling heavy tar separated by cooling the coke oven gas generated in the coke oven. Specifically, the present invention discloses a treatment method capable of generating fuel by removing moisture contained in heavy tar using a centrifuge and then mixing with finely divided coke.

By the way, this type of treatment method requires a separate power to operate the centrifuge, there is a disadvantage that more energy is consumed to utilize the biomass. It also includes the limitation that there is no consideration as to how heavy tar can be collected.

Korean Patent Laid-Open No. 10-1387655 discloses a biomass gasification syngas purification apparatus that can collect tar in a syngas generated in a gasifier using a plurality of cyclones and a wet scrubber and use it as a biomass.

By the way, this type of refining apparatus can only be used for collecting tar in syngas generated in a gasifier operating at a high temperature of about 1,200 ° C to 1,500 ° C, and is applied to tar trapping contained in a material generated during low-speed pyrolysis. There is a limit that cannot be.

In slow pyrolysis, high viscosity tars are emitted, with the limitation that a separate wet scrubber must be provided to remove the high viscosity tars.

Korea Patent Registration No. 10-0508997 (2005.08.18.) Korea Patent Registration No. 10-1387655 (2014.04.21.)

An object of the present invention is to efficiently capture the tar and water contained in the product generated during low-speed pyrolysis, and to efficiently separate the tar from the mixture of the collected tar and water to produce a high quality bio oil having a low moisture content. The present invention provides a low speed pyrolysis product collecting device and a collecting method using the same.

In order to achieve the above object, the present invention, the first collecting unit 100 including a cooling spray device 110; A first outlet 130 positioned at one side of the first collecting part 100; And a fluid separator 300 connected in fluid communication with the first collector 100, wherein the fluid separator 300 includes: a water storage tank 310; And a tar storage tank 320 positioned below the moisture storage tank 310, in fluid communication with the moisture storage tank 310, and including a heating device 322 therein. Provided is a pyrolysis product collection device.

In addition, one side of the first discharge port 130 is connected in fluid communication, and includes a second collecting unit 200 including an electrostatic precipitator 210, the second collecting unit 200 is It may be connected in fluid communication with the fluid separation unit 300.

In addition, the first outlet 130 may be located above the first collecting part 100.

In addition, the electrostatic precipitator 210 may be located above the second collecting unit 200.

In addition, when a first exhaust gas flows into the first collecting unit 100, a first mixture of tar and moisture in the first exhaust gas is condensed by moisture injected from the cooling injection device 110, and thus the first exhaust gas is condensed. Can be separated from.

In addition, the separated first mixture of tar and water may be moved to the fluid separation unit 300 by passing through the first drop port 140 located below the first collecting unit 100.

In addition, the second exhaust gas from which the first mixture of tar and water is separated is discharged from the first collecting unit 100 and introduced into the second collecting unit 200, and the electrostatic precipitator 220 allows the second exhaust gas. A second mixture of tar and moisture in the second flue gas may be separated from the second flue gas by an electrostatic reaction.

In addition, the separated second mixture of tar and water may be moved to the fluid separation unit 300 by passing through the second drop port 240 positioned below the second collecting unit 200.

In addition, the tar and water contained in the first mixture of tar and water and the second mixture of tar and water moved to the fluid separation unit 300 is separated by a density difference, the separated water is the moisture The tar may be stored in the storage tank 310, and the separated tar may be stored in the tar storage tank 320.

In addition, the tar stored in the tar storage tank 320 may be heated by the heating device 322.

In addition, the heating temperature of the heating device 322 may be 150 ° C.

In addition, the present invention, a low-speed pyrolysis product capture method used in the low-speed pyrolysis product capture device, the method comprising the steps of: (a) introducing a first exhaust gas into the first collecting unit (100); (b) condensing the first mixture of tar and water in the first flue gas by condensation by the water sprayed from the cooling spray device 110 to separate the first flue gas; (c) introducing a second exhaust gas from which the first mixture of tar and water is separated into the second collecting part 200; And (d) separating a second mixture of tar and moisture in the second exhaust gas from the second exhaust gas by electrostatic attraction generated in the electrostatic precipitator 210. to provide.

In addition, after the step (b) and before the step (c), (b1) the first mixture of the condensed tar and water is introduced into the fluid separation unit 300; And (d), after the step (d1), the separated second mixture of tar and water is introduced into the fluid inlet 300.

Further, after the step (d1), (e) the first mixture of tar and water and the second mixture of tar and water introduced into the fluid separation unit 300 are separated by the density difference, and thus the water Is further moved to the water storage tank 310 and the tar is moved to the tar storage tank 320.

In addition, after the step (e), (f) may further comprise the step of heating the tar stored in the tar storage tank 320 by the heating device 322 to produce a bio-oil.

According to the present invention, tar and water contained in the product can be effectively collected without a mechanical device requiring a separate power source such as a cyclone, thereby increasing energy efficiency in the collecting process.

In addition, since the mixture of the tar and water contained in the product is collected by varying the collection method according to the molecular weight, it is possible to effectively capture the mixture of tar and water.

In addition, since the mixture of the collected tar and water is separated by a density difference without undergoing a separate treatment process, and a process of heating the separated tar can be mixed with the existing fuel to generate a high quality bio oil that can be combusted. The utilization of mass can be improved.

1 is a chart showing the results of a slow pyrolysis experiment.
Figure 2 is a schematic diagram showing a low speed pyrolysis collection apparatus according to an embodiment of the present invention.
FIG. 3 is a block diagram illustrating a decomposition process of a product according to the low speed pyrolysis collecting device of FIG. 2.
FIG. 4 is a flowchart illustrating a product collection method using the low speed pyrolysis collection apparatus of FIG. 2.

Hereinafter, with reference to the accompanying drawings will be described in detail a low-speed pyrolysis product capture device and a product capture method using the same.

1. Definition of terms

The term "low speed pyrolysis" as used in the description below is used to refer to slow pyrolysis, low temperature pyrolysis or low temperature low temperature pyrolysis.

The term "product" as used in the following description means a product resulting from low speed pyrolysis and includes biochar, bio oil and pyrolysis gas and the like.

The term "first flue gas" used in the following description refers to a gas included in a product, and gas that is not subjected to a separate treatment process.

As used in the following description, the term "first mixture" refers to a mixture of tar and water collected by the first collecting unit 100, which will be described later, of a mixture of tar and water present in the first exhaust gas.

The term " second exhaust gas " used in the following description refers to a gas in which collection of a mixture of tar and water is completed in the first collecting unit 100 to be described later.

As used in the following description, the term "second mixture" refers to a mixture of tar and water collected by the second collecting unit 200 to be described later among the mixture of tar and water present in the second exhaust gas.

The term "third exhaust gas" used in the following description refers to a gas in which a mixture of tar and water is completed in the second collecting unit 200 to be described later.

In addition, the term "mixture" as used in the description below refers to the "first mixture" and "second mixture" described above.

2. Explanation of results of low speed pyrolysis experiment

Hereinafter, the low-speed pyrolysis result will be described separately by temperature with reference to FIG. 1.

As a result of low-speed pyrolysis with a temperature increase rate of 10 ° C. per minute and a target temperature of 300 ° C. to 600 ° C. on a lab-scale, the composition ratio of the produced material was about 30% or less of biofuel and about 5% of bio oil. 50% or less, about 20% of pyrolysis gas.

In the case of bio oil, the calorific value is about 15.94 MJ / kg, and has a lower calorific value than heavy oil of about 45 MJ / kg, so there is a limit to using only bio oil as a fuel.

Therefore, it is preferable to burn the bio oil mixed with other fuels rather than use alone, in which case there is a concern that the fuel efficiency is lowered due to the moisture contained in the bio oil.

A target temperature of 300 ° C. produced 91.92% of the liquid phase and 8.71% of the heavy oil phase, with a water content of 59.77%. In this case, the calorific value is about 11.14 MJ / kg.

When the target temperature rose from 400 ° C. to 600 ° C., the proportion of the liquid phase was lowered and the proportion of the oil phase was higher, and the content of moisture contained in the product was decreased and thus the calorific value increased.

In summary, the lower the temperature, the higher the content of water contained in the product and the lower the amount of heat, and the higher the temperature, the lower the amount of water contained in the product and the higher the amount of heat.

That is, the water content is inversely related to the target temperature and the calorific value, and as described above, when the low-speed pyrolysis process is performed to generate the biochar, the moisture content is increased and thus the calorific value may be reduced. .

Therefore, if the moisture contained in the bio-oil produced by performing a low-speed pyrolysis process to effectively produce bio fuel can be used as an alternative fuel through mixed combustion with the existing fuel.

3. Description of Slow Pyrolysis Product Collection Apparatus 20

2 and 3, the low speed pyrolysis product collecting device 20 according to an embodiment of the present invention has one side connected in fluid communication with the low speed pyrolysis device 10, so that a product generated as a result of the low speed pyrolysis is introduced. do.

The mixture of tar and water contained in the product introduced into the low speed pyrolysis product collecting device 20 is collected and stored in different ways according to the molecular weight, and the third exhaust gas from which the mixture of tar and water is removed is a low speed pyrolysis product collecting device. Discharged to the outside of 20.

Hereinafter, the low speed pyrolysis product collecting device 20 according to the embodiment shown in FIG. 2 will be described in detail.

The low speed pyrolysis product collecting device 20 includes a first collecting unit 100, a second collecting unit 200, and a fluid separation unit 300.

Also, a low speed pyrolysis product collecting device 20 is connected in fluid communication with the low speed pyrolysis product collecting device 20 that produces a product to be introduced into the low speed pyrolysis product collecting device.

(1) Description of the low speed pyrolysis apparatus 10

The low speed pyrolysis apparatus 10 is a portion where a low speed pyrolysis process for generating biochar and the like is performed.

One side of the low speed pyrolysis device 10 is the exhaust gas flow portion 12 is located. The exhaust gas flow part 12 is connected in fluid communication with the low speed pyrolysis device 10 and the first collecting part 100 to be described later, so that a passage through which the product generated as a result of the pyrolysis flows into the first collecting part 100 to be described later. to provide.

The low speed pyrolysis device 10 may be provided integrally with the low speed pyrolysis product collection device 20 or as a separate device.

In addition, it may include a separate storage unit (not shown) for collecting and storing the generated bio- 촤.

The first exhaust gas in a gaseous state of the product generated in the low speed pyrolysis apparatus 10 is introduced into the first collecting unit 100 to be described later through the exhaust gas flow unit 12.

(2) Description of the first collecting part 100

The first collecting unit 100 is a portion into which the product generated in the low speed pyrolysis device 10 flows into the low speed pyrolysis product collecting device 20. In other words, the product flows into the first collecting unit 100 for the first time among the low speed pyrolysis product collecting device 20.

The first mixture of tar and water in the product introduced into the first collecting unit 100 is collected through a condensation process, and the second exhaust gas from which the first mixture of tar and water is removed is described later in the second collecting unit 200. Flows into.

The first collector 100 is connected in fluid communication with the low speed pyrolysis device 10 through the exhaust gas flow 12.

In the illustrated embodiment, one side of the first collecting unit 100 is connected in fluid communication with the second collecting unit 200 to be described later through the first outlet 130 to be described later, the first collecting unit 100 The lower side of the fluid separation unit 300 to be described later is connected in fluid communication.

The first collecting unit 100 includes a cooling spray device 110, a first inlet port 120, a first outlet port 130, a first drop port 140, and a partition wall 150.

1) Description of Cooling Injection Device 110

The cold spray device 110 injects a low temperature fluid into the first exhaust gas introduced into the first collecting unit 100 to condense and collect a tar and moisture mixture in the first exhaust gas.

In the illustrated embodiment, the cooling injection device 110 is provided in a rod-shaped long form in the horizontal direction, the shape is changeable.

However, before the first exhaust gas introduced into the first inlet 120 to be described later is discharged to the first outlet 130 to be described later, in order to collect as much of the first mixture of tar and moisture contained in the first exhaust gas as possible, It is preferable to be formed long in the horizontal direction so as to cover all the flow path of the exhaust gas.

In one embodiment, the fluid injected from the cooling jet device 110 may be water, and the flow rate, flow rate and injection angle of the fluid injected from the cooling jet device 110 is adjustable.

The cooling injection device 110 may inject the fluid directly to the first exhaust gas. The injected fluid cools the first exhaust gas and simultaneously condenses the first mixture of tar and moisture contained in the first exhaust gas.

The first mixture of condensed tar and water is separated from the first exhaust gas due to its weight and falls downward, and passes through the first drop port 140 to be described later and flows into the fluid separator 300 to be described later.

The first mixture of tar and water collected by the cold spray device 110 has a greater mass than the second mixture of tar and water, which will be described later. That is, the first mixture of high mass tar and water is collected in the first collecting unit 100, and the low mass tar and second mixture is collected in the second collecting unit 200 to be described later. Detailed description thereof will be described later.

In order to receive the injected fluid, the cooling injection device 110 may be connected in fluid communication with a separate fluid supply device (not shown).

2) Description of the first inlet 120

The first inlet 120 provides a passage through which the first exhaust gas generated in the low speed pyrolysis device 10 flows into the first collecting unit 100. In the illustrated embodiment, the first inlet 120 is located on one side adjacent to the low speed pyrolysis apparatus 10 of the first collecting unit 100 and is in fluid communication with the exhaust gas flow unit 12.

In the illustrated embodiment, the first inlet 120 is located near the center of the height direction of the first collecting unit 100, the position is changeable.

However, in order to increase the moving distance until the first exhaust gas is discharged through the first discharge port 130 which will be described later, in order to increase the condensation efficiency by the fluid injected from the cooling injection device 110, the first inlet port may be increased. It is preferable that 120 is located below the center vicinity of the height direction of the 1st collection part 100 at least.

This is because the first exhaust gas flowing into the first collecting unit 100 tends to rise as a high temperature, and when the first mixture of tar and moisture of high mass is condensed and separated, the density of the second exhaust gas decreases and rises. Considering the tendency to do so.

3) Description of the first outlet 130

The first outlet 130 is a passage through which the second exhaust gas from which the first mixture of tar and water is separated by the low temperature fluid injected from the cooling injector 110 flows into the second collecting unit 200 to be described later.

The first outlet 130 connects the first collector 100 and the second collector 200 to be described later in fluid communication.

In the illustrated embodiment, the first outlet 130 is located above the first collecting part 100. This is because, as described above, the density of the second exhaust gas will decrease and rise as a result of condensation and separation of the first mixture of high mass tar and water.

Therefore, the second exhaust gas moved to the upper side of the first collecting unit 100 without applying a separate external force for the flow of the second exhaust gas to the second collecting unit 200 to be described later through the first outlet 130. Can be introduced.

In another embodiment, the second exhaust gas may be discharged outward through the first outlet 130. That is, when the low-speed pyrolysis product collecting device 20 is configured by including only the first collecting unit 100 without the second collecting unit 200 to be described later, the first collecting unit 100 undergoes only the collecting process in the first collecting unit 100 and then Two flue gases may be discharged out of the low speed pyrolysis product capture device 20.

4) Description of the first drop port 140

The first drop port 140 is a passage through which the first mixture of tar and water collected by the first collecting part 100 flows into the fluid separating part 300 to be described later.

The first drop port 140 connects the first collecting part 100 and the fluid separating part 300 to be described later in fluid communication.

In the illustrated embodiment, the first drop port 140 is located below the first collecting part 100. In addition, the lower side of the first collecting part 100 is formed to be inclined and is provided in a funnel shape while reaching from the first inlet 120 to the first dropping hole 140.

This prevents the first mixture of tar and moisture collected from the first collecting part 100 from being attached to the inner wall of the first collecting part 100 due to its viscosity, and will be described later through the first dropping hole 140. This is to move to the fluid separation unit 300 to be.

5) Description of the bulkhead 150

The partition wall 150 partitions the first collecting unit 100 and the second collecting unit 200 to be described later. In the illustrated embodiment, the partition wall 150 is located below the first outlet 130 but its position is changeable.

In another embodiment, the partition wall 150 may not be provided separately. In this case, each of the first collecting unit 100 and the second collecting unit 200 to be described later will be provided separately and connected in fluid communication by the first outlet 130.

(3) Description of the second collecting part 200

The second collecting unit 200 is introduced into the second exhaust gas from which the first mixture of tar and water is separated, and after the second mixture of tar and water contained in the second exhaust gas is collected and separated by electrostatic attraction, The third exhaust gas is discharged to the outside.

In the illustrated embodiment, the second collecting unit 200 is located at one side of the first collecting unit 100 and is in fluid communication with the first collecting unit 100 through the first outlet 130.

In addition, the lower side of the second collecting unit 200 is connected in fluid communication with the fluid separation unit 300 to be described later.

The second collecting unit 200 includes an electric dust collector 210, a second discharge port 220, and a second drop hole 240.

1) Description of the electrostatic precipitator 210

The electrostatic precipitator 210 collects a second mixture of tar and moisture contained in the second exhaust gas by applying an electrostatic attraction to the second exhaust gas introduced into the second collector 200.

More specifically, a second mixture of tar and moisture contained in the second exhaust gas is attached to the electrostatic precipitator 210 by the electrostatic attraction generated when power is applied to the electrostatic precipitator 210. Are separated.

In addition, since the electrostatic attraction also disappears when the power is cut off to the electrostatic precipitator 210, the second mixture of tar and water attached to the electrostatic precipitator 210 falls down by gravity to be described below. 300).

In the illustrated embodiment, the electrostatic precipitator 210 is formed long in the second collecting unit 200 in the vertical direction, but its shape is changeable.

However, in order to collect as much of the second mixture of tar and moisture contained in the second exhaust gas as possible before the second exhaust gas introduced into the second collecting unit 200 is discharged to the second outlet 220 to be described later. It is preferable to be formed long in the vertical direction so as to cover all the flow path of the exhaust gas.

The second mixture of tar and moisture collected by the electrostatic attraction is separated from the second exhaust gas due to its weight and falls downward to pass through the second drop port 240 to be described later to the fluid separation unit 300 to be described later. Inflow.

The second mixture of tar and water collected by the electrostatic precipitator 210 has a smaller mass than the first mixture of tar and water collected by the cold spray device 110 of the first collector 100. . Detailed description thereof will be described later.

To apply electrostatic attraction, the electrostatic precipitator 210 may receive power from a separate power supply (not shown).

The electrostatic attraction generated in the electrostatic precipitator 210 can be changed by adjusting the power.

2) Description of the second outlet 220

The second outlet 220 is a passage through which the third exhaust gas from which the second mixture of tar and water is separated by the electrostatic attraction generated by the electrostatic precipitator 210 is discharged to the outside of the low speed pyrolysis product collecting device 20. .

In the illustrated embodiment, the second outlet 220 is located above the second collector 200. This is because the third flue gas from which the first and second mixtures of tar and moisture are separated in two times will rise with decreasing density.

Therefore, the third exhaust gas moved upwardly of the second collecting unit 200 without applying a separate external force for the flow of the third exhaust gas is the outside of the low-speed pyrolysis product collecting device 20 through the second outlet 220. Can be discharged.

3) Description of the second drop opening 240

The second drop hole 240 is a passage through which the second mixture of tar and water collected by the second collecting part 200 flows into the fluid separating part 300 to be described later.

The second drop port 240 connects the second collecting unit 200 and the fluid separation unit 300 to be described later in fluid communication.

In the illustrated embodiment, the second drop hole 240 is located below the second collecting part 200. In addition, the lower side of the second collecting unit 200 is inclined toward the lower side from the upper side of the second collecting unit 200 is provided in a funnel shape.

This prevents the second mixture of tar and water collected from the second collecting part 200 from being attached to the inner wall of the second collecting part 200 due to its viscosity, and will be described later through the second drop hole 240. This is to move to the fluid separation unit 300 to be.

(4) Description of the fluid separation unit 300

In the fluid separation unit 300, the first and second mixtures of tar and water collected by the first collecting unit 100 and the second collecting unit 200 are stored, and the tar and water are separated by the density difference. .

The separated tar is heated into a heating device 322 which will be described later to generate bio oil from which moisture is removed.

The fluid separator 300 is positioned below the first collector 100 and the second collector 200, and is in fluid communication with the first collector 100 and the second collector 200, respectively. do.

The fluid separator 300 includes a water storage tank 310, a tar storage tank 320, and a tar dropping port 330.

1) Description of the water storage tank 310

The moisture storage tank 310 stores the tar contained in the first mixture and the second mixture of collected tar and moisture separately. In the illustrated embodiment, the water storage tank 310 is located above the tar storage tank 320 to be described later.

This is because, as will be described later, if the tar and the moisture are separated by the density difference, the moisture of the low density will be moved upward.

The height of the moisture storage tank 310 can be changed. More specifically, according to the ratio of tar and water contained in the first mixture and the second mixture of tar and water, when the ratio of tar is high, the height of the water storage tank 310 is lowered and the tar storage tank 320 to be described later ) May be increased, and when the ratio of moisture is high, the height of the moisture storage tank 310 and the tar storage tank 320 to be described later may be changed.

In another embodiment, the water storage tank 310 and the tar storage tank 320 to be described later are integrally provided so that the heights of the water storage tank 310 and the tar storage port 320 to be described later may be complementarily adjusted to each other.

The water storage tank 310 includes a water outlet 311 and a mixture inlet 312.

The water outlet 311 is a passage through which water separated from the first and second mixtures of tar and water is discharged. In the illustrated embodiment, the water outlet 311 is provided in fluid communication with the outside on one side of the upper side of the water storage tank 310, the position is changeable.

However, the water outlet 311 is preferably positioned to be sufficiently spaced apart from the tar storage tank 320 to be described later in order to prevent the tar is discharged together in the discharge process of water.

The mixture inlet 312 is provided with a first mixture of tar and water collected in the first collecting unit 100 and a second mixture of tar and water collected in the second collecting unit 200 into the water storage tank 310. It is a passage. The mixture inlet 312 connects the first collector 100 and the second collector 200 in fluid communication with the water storage tank 310, respectively.

2) Description of tar storage tank 320

The tar storage tank 320 separates and stores the tar contained in the first mixture and the second mixture of collected tar and water. In the illustrated embodiment, the tar storage tank 320 is located below the moisture storage tank 310.

This is because, as described above, when tar and water are separated in the density difference, the tar of high density will be moved downward.

The height of the tar storage tank 320 can be adjusted complementarily to the height of the moisture storage tank 310 in accordance with the ratio of the tar and water contained in the first mixture and the second mixture of stored tar and water. As shown.

The tar storage tank 320 includes a bio oil outlet 321 and a heating device 322.

The bio oil outlet 321 is a passage through which the bio oil generated by the heating of the heating device 322 to be described later is discharged. In the illustrated embodiment, the bio oil outlet 321 is provided in fluid communication with one side of the lower side of the tar storage tank 320, the position is changeable.

The heating device 322 is provided on one side of the tar storage tank 320 to heat the tar stored in the tar storage tank 320. The heating device 322 may be provided in any form capable of providing heat to the tar.

The tar is heated by the heating device 322 to condense into heavy hydrocarbons, thereby producing a high quality bio oil capable of mixed combustion with other fuels.

In one embodiment, the heating device 322 may heat the tar stored in the tar storage tank 320 at a temperature of about 150 ° C., in which case the stored tar may be further activated to condense into heavy hydrocarbons.

3) Description of the tar drop 330

The tar drop 330 is located between the water storage tank 310 and the tar storage tank 320 so that when the first mixture and the second mixture of tar and moisture are separated from the tar by the density difference, the tar is separated. It provides a passageway through which tar falls into the tar storage tank 320.

The tar drop 330 may connect or block the water storage tank 310 and the tar storage tank 320 in fluid communication.

More specifically, as will be described later, the first mixture and the second mixture of tar and water introduced into the fluid separation unit 300 are separated by a density difference. In this case, the tar drop opening 330 is always opened. If so, there is a risk that the first and second mixtures of tar and moisture fall directly into the tar storage tank 320.

Therefore, the first and second mixtures of tar and water are stored in the water storage tank 310 to be separated from the tar and the water by the density difference, and then only the tar may be moved to the tar storage tank 320. It is preferable that the tar dropping opening 330 is provided as a structure.

In another embodiment, the first and second mixtures of tar and water introduced into the fluid separator 300 flow directly into the lower tar storage tank 320, and the separated water is separated from the tar storage tank 320. As a structure that can be moved to the water storage tank 310 may be provided with a tar dropping port 330.

In addition, as described above, according to another embodiment of the present invention, the water storage tank 310 and the tar storage tank 320 may be integrally provided so that the height thereof may be partitioned by the tar drop port 330.

In this case, the tar dropping port 330 partitions the water storage tank 310 and the tar storage tank 320, such as a plate-shaped member, but not in the form of a passage, so that the separated tar can fall into the tar storage tank 320. It may be provided in a form including some openings.

5. Description of Slow Pyrolysis Product Collection Method

The low-speed pyrolysis product trapping apparatus 20 according to an embodiment of the present invention may collect a mixture of tar and water contained in the first flue gas in the product generated as a result of the low-speed pyrolysis process in different ways according to the mass.

In addition, the first mixture and the second mixture of the collected tar and water is moved to the fluid separation unit 300 and the tar and water are separated by the density difference, so that only the water may be discharged.

In addition, by heating the separated tar by the heating device 322, it is possible to produce a high quality bio-oil capable of mixed combustion with other fuels.

Hereinafter, a capture method using the low speed pyrolysis product capture device 20 according to an embodiment of the present invention will be described in detail with reference to FIGS. 2 to 4.

In the low speed pyrolysis apparatus 10, bio fuel, bio oil and a first exhaust gas are generated.

(1) Description of the process performed by the first collecting unit 100 (S100)

The first flue gas generated by the low speed pyrolysis apparatus 10 passes through the flue gas flow part 12 and the first inlet port 120 in order and flows into the first collecting part 100 (S110).

The low-temperature fluid injected from the cold injector 110 of the first collecting unit 100 is directly injected into the first exhaust gas so that the first mixture of tar and water contained in the first exhaust gas condenses and is separated from the first exhaust gas. It becomes (S120).

At this time, the first mixture of the tar and the water to be condensed and separated has a larger mass than the second mixture of the tar and water to be separated by the electrostatic attraction in the second collecting unit 200 as described above.

The separated tar and the first mixture of water is moved downward by gravity and passes through the first drop opening 140 and the mixture inlet 312 and flows into the fluid separation unit 300 (S130).

At this time, the lower side of the first collecting unit 100 may be inclined to minimize the phenomenon that the first mixture of tar and water is entangled with the inner wall of the first collecting unit 100.

(2) Description of the process performed by the second collecting unit 200 (S200)

The second exhaust gas which has been separated by the condensation of the first mixture of tar and water in the first collecting unit 100 is introduced into the second collecting unit 200 through the first outlet 130 (S210).

Due to the electrostatic attraction generated by the electrostatic precipitator 210 of the second collecting unit 200, a second mixture of tar and water contained in the second exhaust gas is attached to the electrostatic precipitator 210 and separated from the second exhaust gas. It becomes (S220).

In addition, when the power of the electric dust collector 210 is cut off, the electrostatic attraction also disappears accordingly, so that the second mixture of tar and water, which has been attached to the electric dust collector 210, is moved downward by gravity, so that the second drop hole Passing through the 240 and the mixture inlet 312 flows into the fluid separation unit 300 (S230).

At this time, the lower side of the second collecting unit 200 may be formed to be inclined to minimize the phenomenon that the second mixture of tar and moisture is entangled on the inner wall of the second collecting unit 200.

(3) Description of the process performed in the fluid separation unit 300 (S300)

The first mixture and the second mixture of tar and water introduced into the fluid separation unit 300 is introduced into the water storage tank 310, and the tar and water are separated by the density difference (S310).

At this time, the tar dropping port 330 is connected to the water storage tank 310 and the tar storage tank 320 in fluid communication, it can be provided to be opened and closed as described above.

Low-density moisture separated by the difference in density is moved to the upper water storage tank 310, the high-density tar is moved to the lower tar storage tank 320 (S320).

(4) Description of the process of generating bio-oil using stored tar (S400)

Tar stored in the tar storage tank 320 is heated by the heating device 322, thereby producing a high quality bio oil (S400).

Specifically, the tar is heated by the heating device 322 and condensed into heavy hydrocarbons, thereby producing a high quality bio oil capable of mixed combustion with other fuels.

The produced bio oil is discharged to the outside of the tar storage tank 320 through the bio oil outlet 321. In addition, the water stored in the water storage tank 310 is discharged to the outside of the water storage tank 310 through the water outlet 311.

According to the low-speed pyrolysis product trapping apparatus 20 according to an embodiment of the present invention, tar and water contained in the first flue gas in the product generated as a result of the low-speed pyrolysis are different depending on the molecular weight, that is, condensation and electrostatic attraction By collecting in multiple times by, the collection efficiency of tar and moisture is raised.

In addition, the collected tar and moisture are separated by the density difference in the fluid separation unit 300 without a separate treatment process, thereby simplifying the process and reducing the treatment cost.

Furthermore, the process of heating the separated tar alone allows the production of high quality bio oils that can be mixed and combusted with other fuels.

Therefore, bio oil as well as bio fuels among the products generated in the low-speed pyrolysis process can be utilized as fuel, thereby increasing the efficiency of energy utilization.

Although it has been described above with reference to preferred embodiments of the present invention, those skilled in the art will be able to variously modify and change the present invention without departing from the spirit and scope of the invention described in the claims below. It will be appreciated.

10: low speed pyrolysis device
12: exhaust gas flow part
20: low speed pyrolysis product collection device
100: first collecting part
110: cooling jet device
120: first inlet
130: first outlet
140: first dropping port
150: bulkhead
200: second collecting part
210: electric dust collector
220: second outlet
240: second dropping opening
300: fluid separation unit
310: moisture storage tank
311: water outlet
312 mixture inlet
320: tar storage tank
321: Bio Oil Outlet
322: heating device
330: tar drop

Claims (15)

A first collecting part 100 including a cooling injection device 110 for injecting a fluid into a first exhaust gas introduced into the inside through a first inlet 120 connected to one side;
A first discharge port 130 disposed at one side of the first collecting unit 100 and discharging the second exhaust gas condensed by tar and moisture from the first exhaust gas by the cooling injection device 110;
It includes a fluid separation unit 300 is connected in fluid communication with the lower side of the first collecting unit 100,
The fluid separation unit 300,
A water storage tank 310; And
Located below the water storage tank 310, and in fluid communication with the water storage tank 310, and includes a tar storage tank 320 including a heating device 322 therein,
Bio oil capture device included in low speed pyrolysis products.
The method of claim 1,
One side thereof is connected to the first outlet 130 in fluid communication, and includes a second collecting part 200 including an electric dust collecting device 210,
The second collecting unit 200 is connected in fluid communication with the fluid separation unit 300,
Bio oil capture device included in low speed pyrolysis products.
The method of claim 2,
The first outlet 130 is located above the first collecting unit 100,
Bio-oil capture device contained in low speed pyrolysis product.
The method of claim 2,
The electrostatic precipitator 210 is located above the second collecting unit 200,
Bio oil capture device included in low speed pyrolysis products.
The method of claim 2,
When the first exhaust gas flows into the first collecting part 100 through the first inlet 120,
The first mixture of tar and moisture in the first exhaust gas is condensed and separated from the first exhaust gas by the fluid injected from the cooling injection device 110,
Bio oil capture device included in low speed pyrolysis products.
The method of claim 5,
The separated first mixture of tar and water is moved to the fluid separation unit 300 through the first drop port 140 located below the first collecting unit 100,
Bio oil capture device included in low speed pyrolysis products.
The method of claim 5,
The second exhaust gas from which the first mixture of tar and water is separated is discharged from the first collecting unit 100 and introduced into the second collecting unit 200.
By the electrostatic precipitator 220, a second mixture of tar and moisture in the second exhaust gas is separated from the second exhaust gas by an electrostatic reaction,
Bio oil capture device included in low speed pyrolysis products.
The method of claim 7, wherein
The separated second mixture of tar and water is moved to the fluid separation unit 300 through the second drop port 240 located below the second collection unit 200,
Bio oil capture device included in low speed pyrolysis products.
The method according to any one of claims 5 to 8,
The tar and water contained in the first mixture of tar and water and the second mixture of tar and water moved to the fluid separation unit 300 are separated by a density difference,
The separated moisture is stored in the moisture storage tank 310,
The separated tar is stored in the tar storage tank 320,
Bio-oil capture device contained in low speed pyrolysis product.
The method of claim 9,
The tar stored in the tar storage tank 320 is heated by the heating device 322,
Bio oil capture device included in low speed pyrolysis products.
The method of claim 10,
The heating temperature of the heating device 322 is 150 ℃,
Bio oil capture device included in low speed pyrolysis products.
A method of capturing bio-oil contained in a low-speed pyrolysis product for use in a bio-oil capture device included in a low-speed pyrolysis product according to claim 2,
(a) introducing a first exhaust gas into the first collecting part 100;
(b) condensing the first mixture of tar and water in the first flue gas by condensation by the water sprayed from the cooling spray device 110 to separate the first flue gas;
(b1) introducing the first mixture of condensed tar and water into the fluid separation unit 300;
(c) introducing a second exhaust gas from which the first mixture of tar and water is separated into the second collecting part 200;
(d) separating a second mixture of tar and moisture in the second exhaust gas from the second exhaust gas by electrostatic attraction generated in the electrostatic precipitator 210;
(d1) introducing the separated mixture of tar and water into the fluid separation part 300;
(e) the first mixture of tar and water and the second mixture of tar and water introduced into the fluid separation unit 300 are separated by a density difference, so that the water is transferred to the water storage tank 310. The tar is moved to a tar storage tank (320); And
(f) heating the tar stored in the tar storage tank 320 by the heating device 322 to produce a bio oil.
Bio oil capture method included in low speed pyrolysis products.
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