KR101414817B1 - Apparatus for collecting bio-oil and method for collecting bio-oil using the same - Google Patents

Abstract

The bio-oil recovery apparatus of the present invention comprises a palm waste storage tank, a membrane filter pretreatment means connected to the palm waste storage tank, a concentration unit for transferring the liquid palm waste from the membrane filter pretreatment means to produce a concentrated liquid, And an oil storage tank through which the oil finally processed in the oil recovery tank is transferred.
The present invention can extract the bio-oil remaining on palm oil extraction process wastewater (POME), which is a by-product generated in the palm oil production process, by using a membrane filter pretreatment means and a membrane filter disposed in a stepwise manner.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bio-oil recovery apparatus and an oil recovery method using the bio-

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bio-oil recovery apparatus and an oil recovery method using the bio-oil recovery apparatus. More particularly, the present invention relates to a POME And an oil recovery method using the same.

The harvesting process of all farms generates significant amounts of biomass and waste. Incineration is mainly used as a method of treating the biomass and the waste, which causes a problem of generating a lot of pollution. Other methods of disposal include simply depositing biomass or waste in the area surrounding crops that are corrupted or degraded over an extended period of time, which tends to accumulate at a rate that is faster than the rate at which biomass and waste decay Therefore, there is a problem.

In addition, palm oil wastes such as kernel shell and empty fruit bunch (EFB) and palm oil mill effluent (POME) from farms are difficult and time consuming to be biodegraded by microorganisms.

As a conventional method for recycling such wastes, Korean Patent Laid-Open Nos. 10-2005-0083878 and Korean Patent Registration No. 10-0938490 are exemplified. Shredding the palm fibrous waste on the 10-2005-0083878; And mixing the finely divided palm fibrous waste with a dried plant pulverization effluent and peat. The Korean Patent No. 10-0938490 discloses a method for treating palm oil waste by a palm oil extraction process From the waste, a kernel shell, empty fruit bunch (EFB), palm oil mill effluent (POME) and palm oil residue fiber are obtained and pretreated, Is provided.

However, there is a problem in that the recycling method or the raw fertilizer manufacturing process does not describe a process for recovering bio-oil existing in POME or EFB, and thus, a considerable amount of oil is reprocessed without being recovered.

In addition, the above-mentioned recycling methods still have a disadvantage in that the efficiency of the manufacturing method is low or the produced product is not economically useful.

Korean Patent Publication No. 10-2005-0083878 Korean Patent No. 10-0938490

In order to solve the above problems, the present invention has been made to solve the above-mentioned problems, and it is an object of the present invention to provide a method for extracting bio-oils remaining on a palm oil extraction process wastewater (POME) And an oil recovery method using the same.

According to an aspect of the present invention, there is provided a bio-oil recovery apparatus comprising: a palm waste storage tank; A membrane filter pretreatment means connected to the palm waste reservoir; A concentrating unit for transferring the liquid palm waste from the membrane filter pretreatment means to produce a concentrated liquid; An oil recovery tank for receiving and purifying the concentrate treated in the concentrating unit; And an oil reservoir to which the oil finally processed in the oil recovery tank is transferred.

The palm waste contained in the palm waste reservoir may be POME (Palm Oil Mill Effluent).

It is preferable that a plurality of the enrichment units are arranged in series, and the plurality of enrichment units include a membrane filter connected to the concentrated water storage tank and the concentrated water storage tank, respectively.

Wherein the enrichment unit includes a first enrichment unit having a first membrane filter and a second enrichment unit having a second membrane filter, wherein the first and second membrane filters are formed of a UF (Ultra Filteration) or NF (Nano Filteration) . ≪ / RTI >

Preferably, each of the concentrate reservoirs supplies the farm waste concentrate to the oil recovery tank.

The bio-oil recovery apparatus may further include an air compressor connected to the palm waste storage tank and the plurality of membrane filters.

According to another aspect of the present invention, there is provided a bio-oil recovery method comprising the steps of: (a) supplying palm waste from a palm waste reservoir to a membrane filter pretreatment means; (b) separating the palm waste from the membrane filter pretreatment means into a solid component and a liquid component; (c) stepwise extracting the concentrated water using the liquid palm waste separated in the step (b); (d) generating bio-oil in the oil recovery tank using the concentrated water extracted in the step (c).

The step (c) includes the steps of: (c1) primarily extracting concentrated water from the liquid farm waste through a first concentrating unit having UF (Ultra Filtering); (c2) Secondarily extracting the concentrated water from the treated water extracted from the liquid-phase farm waste of the step (c1) through the second concentrating unit having NF (Nano Filteration) have.

The bio-oil recovery apparatus according to the present invention can extract bio-oil remaining on the palm oil extraction process waste water (POME), which is a byproduct generated in the palm oil production process, by using a membrane filter pretreatment means and a membrane filter disposed in a stepwise manner.

In addition, the present invention can overcome the problem of contamination of rivers and soils when they are discharged without treatment for POME.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a general configuration diagram of a bio-oil recovery apparatus according to the present invention, and Fig.
FIG. 2 is a time-series flowchart showing an oil recovery process using the bio-oil recovery apparatus according to the present invention.

These and other objects, features and other advantages of the present invention will become more apparent by describing in detail preferred embodiments of the present invention with reference to the accompanying drawings. The embodiments described are provided by way of illustration for the purposes of illustration and are not intended to limit the scope of the invention.

The components of the bio-oil recovery device and the oil recovery method using the bio-oil recovery device of the present invention may be integrally used or separately used as needed. In addition, some components may be omitted depending on the usage pattern.

The pome in the present invention refers to a palm oil mill effluent (POME) as a waste generated in a palm oil production process. Hereinafter, the Pome is used in combination with POME.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an apparatus for recovering bio-oil from POME according to an embodiment of the present invention and an oil recovery method using the same will be described in detail with reference to the accompanying drawings.

POME The overall configuration of the bio-oil recovery device 100

First, referring to FIG. 1, the overall configuration of the bio-oil recovery apparatus 100 according to the present invention will be described.

The bio oil recovery apparatus 100 includes a palm waste storage tank 10, a membrane filter pretreatment means 20 that receives the palm waste from the palm waste storage tank 10, a liquid palm waste that is separated from the membrane filter pretreatment means 20, A second concentrating unit 50 for extracting secondarily concentrated water from the palm waste solution discharged from the first concentrating unit 40, a second concentrating unit 50 for concentrating An oil recovery tank 60 for receiving the concentrated water treated in the units 40 and 50 and an oil storage tank 70 for transferring the finally treated oil in the oil recovery tank 60. The farm wastes to be applied in the present invention are preferably POME.

The bio-oil recovery apparatus 100 further includes a treatment water tank 80 connected to an outlet end of the second enrichment unit 50 and an air compressor 30 connected to the palm waste water storage tank 10.

The membrane filter pretreatment unit 20 functions as a sludge filter for separating and storing the solid component extracted from the palm waste supplied from the palm waste storage tank 10, while in the process of sending the porous solution to the first concentration unit 40 It is responsible for removing impurities.

The first concentrating unit 40 includes a first membrane filter 41 connected to the first concentrated water storage tank 41 and a first concentrated water storage tank 41. The first membrane filter 46 filters the incoming foamed solution to deliver the concentrated water containing oil to the first concentrated water storage tank 41 and the filtered foamed solution to the second enrichment unit 50.

The first membrane filter 46 may be an ultrafilteration (UF) filter, which is a porous filter having pores ranging in size from tens to hundreds of nanometers, and is a filter suitable for separating low molecular weight materials, Which removes contaminants through many micropores distributed on the membrane surface.

On the other hand, the second concentration unit 50 includes a second membrane filter 56 connected to the second concentrated water storage tank 51 and the second concentrated water storage tank 51. The second membrane filter 56 filters the incoming solution flowing from the first concentration unit 40 to transfer the concentrated water containing oil to the second concentrated water storage tank 51. The filtered filtered solution is supplied to the treated water tank 80 ).

The second membrane filter 56 may be an NF (Nano Filteration) filter. The second membrane filter 56 may be a NF filter. As a result, it is possible to filter foreign matter of a minute size through the above-described technique.

The present invention provides an apparatus for recovering bio-oil using a palm oil mill effluent (POME) as one kind of waste generated in a palm oil production process. In the present invention, the POME is purified by using steam to remove fruit that has been removed during the process of squeezing by disinfecting the fresh fruit bunches (FFB, Fresh Fruit Bunches) or removing empty fruit bunch, , Or in the process of producing sludge palm oil through separation, or in the process of wet separation in the state of making the cake by squeezing the fruit with the empty fruit bunch removed.

The basic physical properties of POME applied to the present invention are shown in Table 1 below.

The basic pH is 4.2, the total solids content is 40,000 (mg / l) and the amount of oil and grease is 6,000 (mg / l). Table 1 below shows the various oxygen requirements for POME, the distribution of solid and oil, and the content of nitrogen. On the other hand, the data in Table 1 show an experimental example, which can vary within a few percent range.

The POME applied to the present invention has an oil content of 0.83% in a sample amount of 1000 kg and an oil content of 8.3 kg.

Features of POME variable Average range pH 4.2 3.4 ~ 5.2 Biological oxygen demand 25,000 10,250 ~ 43,750 chemical oxygen demand 51,000 15,000 ~ 100,000 Total solid component 40,000 11,500 ~ 79,000 Floating solid 18,000 5,000 ~ 54,000 Volatile solid 34,000 9,000 ~ 72,000 Oil & Grease 6,000 130 ~ 18,000 Ammonia nitrogen 35 4 to 80 Total nitrogen 750 180 ~ 1,400 Except pH, the unit is mg / l

The membrane filter pretreatment means 20 may be a structure operated by a plurality of conveying members and a cam as one embodiment thereof. That is, the pomeo solution is received from the palm waste storage tank 10, and the solid component is sludged, separately stored or discharged, and the liquid component is transferred to the first concentration unit 40.

The membrane filter pretreatment means 20 in the present invention has a capacity of 0.5 (ton / hr), a daily operation amount of 2 hours, a feed sample temperature of 35 degrees, and a treatment capacity of 1 ton. In addition, the sludge discharge amount of 100 kg in the sample amount of 1000 kg is discharged by discharging 900 kg of the filtrate. The moisture content in the sludge is 80% and the weight of the dried sludge is 20 kg. The moisture content of the dried sludge is 5%, the oil content in the total sludge is 0.24%, and consequently the oil content in the sludge is 0.24 kg.

The POME solution to be treated in the first condensing unit 40 is 442.5 kg, the double condensed water is 35.4 kg, and the treated water is 407.1 kg. On the other hand, the oil content in the concentrated water is 8.76%.

The POME solution to be treated in the second condensing unit 50 is 407.1 kg, the double condensed water is 16.3 kg, and the treated water is 390.8 kg. On the other hand, the oil content in the concentrated water is 5.05%.

The oil recovery tank 60 is connected to the first concentrated water storage tank 41 and the second concentrated water storage tank 51 and serves to purify the concentrated fluid containing the oil. In the present invention, the concentrated water injected into the oil recovery tank 60 is 51.6 kg, the supernatant liquid extraction rate is 5%, and the oil extraction amount is 2.58 kg. The water content of the extracted oil is 0.34%, which indicates that only a very small amount of water is contained. On the other hand, the amount of waste water in 51.6 kg of concentrated water is 48.5 kg, and the oil content in the wastewater is 2.7%.

The air compressor 90 is connected to the filtrate reservoir 30, the first membrane filter 46 of the first enrichment unit 40 and the second membrane filter 56 of the second enrichment unit 50. The air compressor 90 is specifically connected to the first membrane filter 46 and the second membrane filter 56 to provide compressed air.

As described above, the overall oil extraction degree in the bio-oil recovery apparatus 100 of the present invention is as follows.

First, 1000 kg of Poma sample containing 0.83% of oil is separated into 100 kg of sludge and 900 kg of filtrate while passing through the membrane filter pretreatment means 20. The filtrate passes through the first concentrating unit 40 to produce 70 kg of concentrated water and 830 kg of treated water. 830 kg of treated water discharged from the first enrichment unit 40 passes through the second enrichment unit 50 and produces 30 kg of concentrated water and 800 kg of treated water. 100 kg of concentrated water delivered from the first and second concentrating units 40 and 50 produces 5 kg of oil in the oil recovery tank 60 and releases 95 kg of waste water.

Description of the operation of the bio-oil recovery device (100)

Hereinafter, the operation of the bio-oil recovery apparatus 100 of the present invention will be described with reference to FIGS. 1 and 2. FIG.

First, the membrane filter pretreatment unit 20 conveys the liquid material from which the solid sludge has been removed to the first concentrating unit 40, in addition to discharging the solid sludge by receiving the pome solution from the palm waste storage tank 10 do. In the process of transferring the liquid to the first concentrating unit 40, the liquid pour is introduced in a state in which the impurities are removed.

The liquid poume introduced into the first concentrating unit 40 allows the concentrated water filtered in the first membrane filter 46 to be stored in the first concentrated water storage tank 41. Thereafter, the treated water flowing into the second enrichment unit 40 from the first enrichment unit 40 causes the concentrated water filtered by the second membrane filter 56 to be stored in the second enrichment water storage tank 51.

The concentrated water stored in the first concentrated water storage tank 41 and the second concentrated water storage tank 51 is purified in the oil recovery tank 60 and stored in the oil storage tank.

As described above, the bio-oil recovery apparatus of the present invention extracts the bio-oil remaining on the palm oil extraction process wastewater (POME), which is a byproduct generated in the palm oil production process, by using a membrane filter pretreatment means and a membrane filter I can do it.

In addition, the present invention can overcome the problem of contamination of rivers and soils when they are discharged without treatment for POME.

Although the preferred embodiments of the present invention have been described, the present invention is not limited to the specific embodiments described above. It will be apparent to those skilled in the art that numerous modifications and variations can be made in the present invention without departing from the spirit or scope of the appended claims. And equivalents should also be considered to be within the scope of the present invention.

10: Palm waste reservoir
20: Membrane filter pretreatment means
30: air compressor
40: first enrichment unit
41: First concentrated water storage tank
46: first membrane filter
50: Second enrichment unit
51: Second concentrated water storage tank
56: Second membrane filter
60: Oil recovery tank
70: Oil storage tank
80: Treatment tank
100: Bio-oil recovery device

Claims (8)

Palm waste reservoir;
A membrane filter pretreatment means connected to the palm waste reservoir;
A concentrating unit for transferring the liquid palm waste from the membrane filter pretreatment means to produce a concentrated liquid;
An oil recovery tank for receiving and purifying the concentrate treated in the concentrating unit; And
An oil storage tank through which the oil finally processed in the oil recovery tank is transferred;
Lt; / RTI >
The membrane filter pretreatment means includes a sludge filter for separating and storing a solid component extracted from the palm waste supplied from the palm waste storage tank and an impurity removing portion for removing impurities from the palm waste from which the solid component is separated ,
Bio oil recovery device.
The method according to claim 1,
Characterized in that the palm waste contained in the palm waste reservoir is Palm Oil Mill Effluent (POME)
Bio oil recovery device.
3. The method of claim 2,
Characterized in that a plurality of said enrichment units are arranged in series and said plurality of enrichment units each comprise a membrane filter connected to a concentrated water storage tank and said concentrated water storage tank,
Bio oil recovery device.
The method of claim 3,
Wherein the enrichment unit includes a first enrichment unit having a first membrane filter and a second enrichment unit having a second membrane filter, wherein the first and second membrane filters are formed of a UF (Ultra Filteration) or NF (Nano Filteration) ≪ / RTI >
Bio oil recovery device.
The method of claim 3,
Characterized in that each of said concentrate reservoirs supplies a palm waste concentrate to said oil recovery tank.
Bio oil recovery device.
The method of claim 3,
The bio-oil recovery device includes:
Further comprising an air compressor connected to the palm waste reservoir and the plurality of membrane filters.
Bio oil recovery device.
(a) supplying palm waste from a palm waste reservoir to a membrane filter pretreatment means;
(b) separating the palm waste from the membrane filter pretreatment means into a solid component and a liquid component;
(c) stepwise extracting the concentrated water using the liquid palm waste separated in the step (b);
(d) generating bio-oil in the oil recovery tank using the concentrated water extracted in the step (c);
/ RTI >
Bio - oil recovery method.
8. The method of claim 7,
The step (c)
(c1) primarily extracting concentrated water from the liquid palm waste through a first concentrating unit having UF (Ultra Filteration);
(c2) secondarily extracting the concentrated water from the treated water extracted from the liquid palm waste in the step (c1) through the second concentrating unit having NF (Nano Filteration);
≪ / RTI >
Bio - oil recovery method.

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