JP2012205967A - Treatment method for waste material generated through crude palm oil production process - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for treating waste material generated through the process of producing crude palm oil, the method being able to efficiently treat waste material generated through the process of producing crude palm oil, and being able to effectively utilize this waste material.SOLUTION: Waste material discharged through the process of producing crude palm oil is treated by squeezing empty fruit bunches (EFB) by a screw press (12) in a first step (S1), and by burning residue (WRC) of the empty fruit bunch (EFB) remaining after squeezing in the first step (S1) in the furnace (15) of a boiler (14) in a second step (S2).

Description

  The present invention relates to a method for treating waste discharged in the course of producing crude palm oil.

  Palm oil collected from oil palm is a vegetable oil that is a valuable food ingredient. And among various vegetable oils, the production amount of palm oil is extremely large. Malaysia and Indonesia are the two major producers of palm oil. Japan imports a large amount of palm oil from these countries and consumes it as raw materials for margarine, fried oil such as instant noodles and snacks, cooking oil, detergents, soaps, paints, inks and cosmetics.

Palm oil is manufactured through the following processes (see, for example, Patent Document 1).
Fresh Fruit Bunch is harvested at the farm and transported to a palm oil manufacturing plant near the farm. The fruit bunches transported to the palm oil factory are sterilized by steam. The fruit sterilized with steam is put into a rotating drum. Individual fruits fall out of the fruit bunches in the rotating drum. The fruit bunches from which the fruit has fallen become empty fruit bunches (Empty Fruit Bunch). Crude palm oil (Crude Palm Oil) is manufactured by squeezing the fruit which has fallen from the fruit bunch. The crude palm oil is further processed to become palm oil.

After squeezing crude palm oil from the fruit, seeds remain. This seed is divided into a shell and a nucleus. Then, palm kernel oil is produced from the core.
Further, in the process of producing crude palm oil at a palm oil manufacturing factory, drainage (Palm Oil Mill Effect) and empty fruit bunches are discharged as waste. The waste liquid contains solid matter derived from oil palm, water, and crude palm oil. The waste liquid is stored in the treatment pond and processed. The discharged empty fruit bunches are directly piled up around the palm oil manufacturing factory.

  In the following description, the empty fruit bunch refers to the part of the fruit bunch excluding the fruit. That is, in the following description, empty fruit bunches and fruits indicate different parts in the fruit bunches, and the parts indicated by the empty fruit bunches and the parts indicated by the fruits do not overlap.

JP 2006-112004 (paragraph 0002)

There are the following problems in processing wastewater discharged in the process of producing crude palm oil in the treatment pond.
That is, the residence time of the drainage is long in the treatment pond. For this reason, an extremely large amount of drainage must be stored in the treatment pond, and a vast treatment pond is required. Moreover, it is necessary to prevent the drainage liquid being treated in the treatment pond from leaking to the surrounding environment. For this reason, appropriate management is necessary. Therefore, it is not preferable to treat the drainage in the treatment pond from the viewpoint of treatment efficiency.

Also, methane gas is generated from the drainage liquid in the treatment pond. Methane gas generated from the drainage contributes to global warming. Also from this point, it cannot be said that it is preferable to treat the drainage in the treatment pond.
Furthermore, the amount of empty fruit bunches discharged in the process of producing crude palm oil is extremely large. Placing a large number of empty fruit bunches around the palm oil manufacturing plant and leaving it as it is becomes a factor of deteriorating the environment around the palm oil manufacturing plant. For example, a pile of empty fruit bunches rots, and insects erupt in the rotted empty fruit bunches. Insects that live in empty fruit bunches can cause humans and animals to become infected with pathogenic bacteria.

In many cases, fruits remain stuck to the empty fruit bunch without falling off. From such fruits, although crude palm oil or palm kernel oil can be obtained, the fruits remaining in the empty fruit bunches are discarded as they are. Nowadays, the shortage of food resources has become a problem.
In the process of producing crude palm oil, the crude palm oil may adhere to the empty fruit bunches. As a result of investigation by the present inventor, in many cases, 1 to 2% of the total weight of empty fruit bunches was crude palm oil adhered to empty fruit bunches.

Furthermore, as a result of investigation by the present inventor, it was found that empty fruit bunches that were left unattended had a calorific value of 6984 kJ / kg. It is not preferable to pile up empty fruit bunches having such a large amount of heat in recent years when effective utilization of limited fuel resources is screamed.
The present invention solves the above-mentioned problems, and the object of the present invention is to be able to efficiently treat waste discharged in the process of producing crude palm oil, and to enable effective use of the waste. It is providing the processing method of the waste discharged | emitted in the process of manufacturing crude palm oil which becomes.

  The present invention adopts the following configuration in order to solve the problem. A method for treating waste discharged in the process of producing crude palm oil according to the invention of claim 1 is a first method of squeezing an empty palm bunch of oil palm discharged in the process of producing crude palm oil from oil palm pulp. And a second step of burning the remains of empty fruit bunches remaining after squeezing in the first step in a furnace.

Empty fruit bunches discharged in the process of producing crude palm oil have a bunch shape. When this bunch of empty fruit bunches are squeezed, the empty fruit bunches are broken apart and become debris. At this time, the hard core of the empty fruit bunch is also broken. In the second step, it is easy to burn the empty fruit bunch debris broken up.
The pressing in the first step can be performed using, for example, a conventional screw press. According to the knowledge of the present inventor, this screw press preferably has an output of 70 HP (= 52199 W) or more.

In the first step, it is possible to heat the empty fruit bunch with steam and squeeze the heated empty fruit bunch. If the empty fruit bunches are heated with steam, the empty fruit bunches become soft and the squeezing in the first step can be facilitated.
In the first step, it is also possible to grind the empty fruit bunches and squeeze the ground empty fruit bunches. If the empty fruit bunch is ground, pressing in the first step can be facilitated.
In the first step, it is also possible to heat the empty fruit bunch with steam, crush the heated empty fruit bunch and then squeeze the ground empty bunch. By heating and grinding the empty fruit bun with steam, pressing in the first step can be facilitated.

In the second step, heat generated from a furnace for burning empty fruit bunch debris can be used for various purposes. For example, this furnace can be used as a heat source for a boiler, and steam can be generated by the boiler.
In the process of producing crude palm oil, the crude palm oil may adhere to the empty fruit bunches. Crude palm oil adhering to the empty fruit bunches can be squeezed and recovered in the first step.

The processing method of the waste discharged | emitted in the process of manufacturing the crude palm oil which concerns on invention of Claim 2 is a processing method of the waste discharged | emitted in the process of manufacturing the rough palm oil of Claim 1. In the second step, the empty fruit bunch debris is heated and then burned in a furnace, and the heating source in the second step is a furnace that burns empty fruit bunch debris in the second step. It is exhaust gas that comes from.
The remnants of the empty fruit bunches contain moisture. By heating the remnants of empty fruit bunches, the moisture content of the empty fruit bunches can be lowered, and the empty fruit bunches can easily burn.
In addition, the heat generated from the furnace for burning the empty fruit bunch debris in the second step is effectively used as a heat source for heating in this step.

  According to the measurement by the present inventor, the moisture content of the empty fruit bunches discharged in the process of producing crude palm oil was about 80% by weight. When this empty fruit bunch was squeezed with a screw press with an output of 70 HP (= 52199 W), the moisture content of the empty fruit bunch debris broken into pieces was approximately 65% by weight. Then, when the empty fruit bunch debris was heated by the exhaust gas from the furnace that burns the empty fruit bunch debris in the second step, the water content of the empty fruit bunch debris was reduced to about 45% by weight. The furnace exhaust gas temperature at the time of this measurement was 350 ° C. Therefore, it is preferable to heat the empty fruit bunch debris with the exhaust gas generated from the furnace that burns the empty fruit bunch debris in the second step because the moisture content of the empty fruit bunch remains very low.

  A method for treating waste discharged in the process of producing crude palm oil according to the invention of claim 3 is a method for treating waste discharged in the process of producing crude palm oil according to claim 1 or claim 2. A third step of separating water from the drainage discharged in the course of producing the crude palm oil, and removing the crude palm oil and solids contained in the drainage; By heating the crude palm oil and solid matter taken out in the third step under a reduced pressure environment, the water contained in the crude palm oil and solid matter taken out in the third step is evaporated, And a fourth step of mixing the crude palm oil remaining after the water evaporates and the solids into a first mixture.

The drainage discharged in the course of producing crude palm oil contains water, solids and crude palm oil. The solid matter and crude palm oil in the drainage are derived from oil palm. In particular, the solid contains a large amount of pulp. Livestock can ingest the crude palm oil and solids contained in the drainage as a part of the food or food.
In a state where the crude palm oil and the solid matter are taken out from the drained liquid, the crude palm oil and the solid matter contain a lot of water, have high fluidity, and are difficult to handle. If water is evaporated from the crude palm oil and solid matter taken out from the drainage, handling of the crude palm oil and solid matter is facilitated.

In addition, after water evaporates, crude palm oil and solid matter remain, but at least a part or most of the crude palm oil is contained in the solid matter.
The crude palm oil remaining after the water has evaporated and the solids are mixed to form a first mixture. This first mixture can be used as feed. It is also possible to use the first mixture by mixing it with a part of another feed.
When water is separated from the drainage, for example, the drainage may be left in a container. By leaving the drainage liquid, the water, crude palm oil and solid matter in the drainage liquid are separated by gravity. Crude palm oil floats on the surface of the drainage and solids settle to the bottom of the drainage. Crude palm oil floating on the surface of the drainage can be easily removed by scraping or the like.

  It is also possible to put the drainage into a container, sink the filter in the drainage, capture the solid matter in the drainage with this filter, and take out the solid matter from the drainage. According to the knowledge of the present inventor, the filter is not easily clogged by sinking the filter in the drainage. That is, in the air, when the solid is captured from the drainage through the drainage through the filter, and when the solid is captured from the drainage by sinking the filter in the drainage, In the latter case, the filter is less likely to be clogged.

  The processing method of the waste discharged | emitted in the process of manufacturing the rough palm oil which concerns on invention of Claim 4 is a processing method of the waste discharged | emitted in the process of manufacturing the rough palm oil of Claim 3. In the fourth step, the crude palm oil extracted from the fruit remaining in the empty fruit bunch of the oil palm in the first step, and the crude palm oil and solid taken out in the third step The mixture is heated under a reduced pressure environment to evaporate water contained in the crude palm oil and solids, and the crude palm oil and solids remaining after the water is evaporated are mixed to form a first Mix.

  Fruits may remain in the empty fruit bunches discharged in the process of producing crude palm oil. In such a case, in the first step, the crude palm oil can be further squeezed from the fruit remaining in the empty fruit bunch. In the fourth step, the crude palm oil obtained from the first step is heated and mixed in a reduced pressure environment together with the crude palm oil and solid matter taken out from the drainage liquid in the third step. This is the first mixture. The crude palm oil obtained from the first step will also be included in the first mixture. Therefore, the crude palm oil obtained from the first step can be used as feed or feed material.

In the first step, when the fruit remaining in the empty fruit bunch and the empty fruit bunch is crushed and then squeezed, the seeds in the fruit can be ground together. If the ground seeds are squeezed, palm kernel oil is obtained, so that the palm kernel oil is also mixed in the crude palm oil obtained from the first step. Palm kernel oil is also derived from oil palm. Livestock can ingest crude palm oil mixed with palm kernel oil as food or part of food.
Note that crude palm oil may adhere to empty fruit bunches. In such a case, in the crude palm oil obtained by squeezing the fruit in the first step, the crude palm oil adhering to the empty fruit bunch is mixed. The crude palm oil adhering to the empty fruit bunches enters the first mixture in the fourth step.

The processing method of the waste discharged | emitted in the process of manufacturing the crude palm oil based on invention of Claim 5 is a process of the waste discharged | emitted in the process of manufacturing the rough palm oil of Claim 3 or Claim 4. It is a method, Comprising: The heat source of the heating in the pressure-reduced environment in the said 4th process is the vapor | steam which generate | occur | produces from the boiler which uses the furnace which burns the remnants of an empty fruit bunch in the said 2nd process.
The heat generated from the furnace for burning the empty fruit bunch debris in the second step is effectively used as a heat source for heating in the fourth step.

  A process for producing the crude palm oil according to any one of claims 3 to 5, wherein the method for treating waste discharged in the process of producing the crude palm oil according to the invention of claim 6 is used. A method for treating the waste discharged in step 4, wherein the ash produced by burning the remnants of empty fruit bunches in the second step, the water separated from the effluent in the third step, and the fourth step The water obtained by condensing the vapor | steam evaporated from the crude palm oil and the solid in the process and calcium silicate are mixed to form a second mixture, and concentrated sulfuric acid is added to the second mixture to be solidified. And a fifth step of making a mixture of three.

The remnants of empty fruit bunches are rich in potassium. For this reason, ash containing a large amount of potassium remains in the furnace in which the remains of the empty fruit bunch are burned in the second step. Further, the water separated from the effluent in the third step contains various organic components derived from oil palm.
In the fifth step, the ash produced by burning the empty fruit bunch debris in the second step, the water separated from the effluent in the third step, and the crude palm oil and solids evaporated in the fourth step The water obtained by condensing the vapor obtained is mixed with calcium silicate to form a second mixture. When concentrated sulfuric acid is added to the second mixture, calcium silicate and concentrated sulfuric acid react with each other to solidify the second mixture into a third mixture.

  The third mixture contains potassium derived from the remnants of empty fruit bunches, various organic components derived from oil palm, silicon and calcium derived from calcium silicate, and sulfur derived from concentrated sulfuric acid. These components contained in the third mixture are useful components for plant growth. Therefore, the third mixture can be used as a fertilizer raw material. It is also possible to use the third mixture as it is as a fertilizer.

  The processing method of the waste discharged | emitted in the process of manufacturing the rough palm oil which concerns on invention of Claim 7 is a processing method of the waste discharged | emitted in the process of manufacturing the rough palm oil of Claim 6. In the second step, the dust collected from the exhaust gas generated from the furnace that burns the empty fruit bunch debris is captured and recovered, and the dust recovered from the exhaust gas is recovered in the second step in the second mixture. Mix in.

In the second step, exhaust gas is generated from the furnace that burns the remnants of the empty fruit bunches. This exhaust gas contains dust. The dust is recovered and the recovered dust is mixed into the second mixture. That is, in the fifth step, the ash produced by burning empty fruit bunch debris in the second step, the water separated from the effluent in the third step, and the crude palm oil and solid matter in the fourth step A second mixture is formed by mixing water obtained by condensing water evaporated from the above, calcium silicate, and dust recovered from the exhaust gas of the furnace that burns the remnants of empty fruit bunches.
Various components derived from the empty fruit bunch are mixed in the dust. By mixing these components into the second mixture M2, it is possible to return the empty fruit bunches that have been discarded so far to the soil as fertilizer.

The processing method of the waste discharged | emitted in the process of manufacturing the crude palm oil based on invention of Claim 8 is a process of the waste discharged | emitted in the process of manufacturing the rough palm oil of Claim 6 or Claim 7. In the method, the empty fruit bunch debris is heated in the second step and then burned in a furnace, and the water obtained by condensing vapor evaporated from the heated empty fruit bunch debris, In the fifth step, the mixture is mixed into the second mixture.
When the empty fruit bunch debris is heated and burned in the second step, steam is generated from the heated empty fruit bunch debris. The vapor generated from the empty fruit bunch debris can be condensed and liquefied, and this liquefied water can be used in making the second mixture.

  Since it is a processing method of the waste discharged in the process of manufacturing crude palm oil as described above, the waste discharged in the process of manufacturing crude palm oil can be efficiently processed, and the waste is effectively used. Utilization is also possible.

It is explanatory drawing of the apparatus relevant to a 1st process and a 2nd process among the treatment facilities of the waste discharged | emitted in the process of manufacturing crude palm oil. It is explanatory drawing of the apparatus relevant to a 3rd process and a 4th process among the treatment facilities of the waste discharged | emitted in the process of manufacturing crude palm oil. It is explanatory drawing of the apparatus relevant to a 5th process among the processing facilities of the waste discharged | emitted in the process of manufacturing crude palm oil.

An embodiment for carrying out the present invention will be described with reference to FIGS. 1 to 3.
As shown in FIG. 3 from FIG. 1, a waste treatment facility 10 discharged in the course of producing crude palm oil CPO includes a screw press 12, a first dryer 13, a boiler 14, a separation tank 17, and a water storage tank. 21, a second dryer 23, a pump 28, a condenser 30, a storage tank 32, a mixing tank 34, and a reaction tank 36.
The screw press 12 shown in FIGS. 1 and 2 has a configuration similar to that of a conventional one. The screw press 12 is configured to squeeze the material supplied to the screw press 12 and to squeeze the liquid out of the supplied material.

The first dryer 13 shown in FIG. 1 is a hollow container. The first dryer 13 is connected to a furnace 15 of a boiler 14 described later, and exhaust gas generated in the furnace 15 enters the first dryer 13.
The boiler 14 shown in FIGS. 1 to 3 has a configuration similar to that of a conventional one, and is configured to generate high-temperature steam. The combustion chamber of the boiler 14 is a furnace 15 for burning fuel.

  The separation tank 17 shown in FIG. 2 is a hollow container. The separation tank 17 has a clearance 18 and a coarse filter 19. The skimmer 18 is configured to be able to scavenge and capture oil floating on the surface of the liquid charged into the separation tank 17. The filter 19 has a bowl-like shape and can be submerged in the liquid after the liquid is put into the separation tank 17. And the solid substance contained in the liquid is capture | acquired by the filter 19 sunk in the liquid.

The water storage tank 21 shown in FIGS. 2 and 3 is a hollow container.
The second dryer 23 shown in FIGS. 1 and 2 has a drying chamber 24 and a heating chamber 25. The drying chamber 24 and the heating chamber 25 are adjacent to each other through a partition wall 26. A suction side of a pump 28 is connected to the drying chamber 24.
The heating chamber 25 is connected to the boiler 14, and steam generated in the boiler 14 enters the heating chamber 25, and heat of the steam is transmitted from the heating chamber 25 to the drying chamber 24 through the partition wall 26. .

The pump 28 shown in FIG. 2 is configured to suck air and steam in the drying chamber 24 and to reduce the pressure in the drying chamber 24.
A primary side inlet of the capacitor 30 shown in FIG. 2 is connected to the discharge side of the pump 28. Cooling water flows through the secondary side of the capacitor 30. The condenser 30 is configured to cool and condense the vapor in the drying chamber 24 sucked by the pump 28 so as to be liquefied.
The storage tank 32 shown in FIG. 2 is a hollow container. The storage tank 32 has an impeller (not shown) for stirring the items therein.
The mixing tank 34 shown in FIGS. 1 to 3 is a hollow container. The mixing tank 34 has an impeller (not shown) for stirring the contents therein.
The reaction tank 36 shown in FIG. 3 is a hollow container. The reaction tank 36 has an impeller (not shown) for stirring the contents therein.

The processing facility 10 has the configuration described above. Next, the operation thereof will be described.
The empty fruit bunches EFB and the drainage POME are discharged from the process of producing the crude palm oil CPO in the palm oil production factory. In the discharged empty fruit bunches EFB, some fruits remain attached. In the palm oil manufacturing factory, the crude palm oil CPO adheres to the empty fruit bunches EFB. The crude palm oil CPO remains adhered to the discharged empty fruit bunches EFB. Then, these empty fruit bunches EFB and drainage POME are carried into the processing facility 10.

Hereinafter, the processing of the empty fruit bunches EFB and the drainage POME carried into the processing facility 10 will be described in order.
As shown in FIG. 1, in the processing facility 10, the empty fruit bunches EFB are first supplied to the screw press 12. The screw press 12 squeezes the empty fruit bunches EFB and the fruits attached to the empty fruit bunches EFB. The empty fruit bunch EFB is squeezed and broken apart into a remnant WRC.
Moreover, the fruit sticking to the empty fruit bunch EFB is also squeezed by the screw press 12 and broken apart. In the screw press 12, crude palm oil CPO is squeezed out from the pressed fruit.

Moreover, in the screw press 12, the crude palm oil CPO adhering to the empty fruit bunches EFB at the palm oil manufacturing factory is also squeezed out together. Furthermore, when the fruit is squeezed, the seed in the fruit is broken, and palm kernel oil is squeezed out from the core in the seed. This palm kernel oil is mixed in the crude palm oil CPO that is squeezed out by the screw press 12.
The process in which the screw press 12 squeezes the empty fruit bunch EFB and the fruit attached thereto is the first process S1.
The debris WRC separated by the screw press 12 is sent to the first dryer 13. The crude palm oil CPO squeezed from the fruit with the screw press 12 is sent to the drying chamber 24 of the second dryer 23.

The boiler 14 is previously operated using heavy oil as fuel. High-temperature exhaust gas G is generated from the furnace 15 of the boiler 14, and the exhaust gas G is sent to the first dryer 13. Due to the heat of the exhaust gas G, the debris WRC in the first dryer 13 is heated and dried. The debris WRC dried by the first dryer 13 is sent to the boiler 14.
In the boiler 14, the debris WRC sent from the first dryer 13 is burned together with fuel heavy oil in the furnace 15. Hot steam STM1 is generated from the boiler 14. The steam STM1 is sent to the heating chamber 25 of the second dryer 23.

When only heavy fuel oil is burned in the furnace 15, the gas generated when the heavy oil burns becomes the exhaust gas G sent to the first dryer 13. When the debris WRC is burned together with fuel heavy oil in the furnace 15, the gas generated when the debris WRC and heavy oil are burned becomes the exhaust gas G sent to the first dryer 13. The exhaust gas G is discharged outside through the first dryer 13.
The process of heating and drying the debris WRC with the first dryer 13, burning the dried debris WRC in the furnace 15 of the boiler 14, and generating the steam STM1 is the second process S2.

  As shown in FIG. 2, the drainage POME is put into the separation tank 17. When the drainage POME is put into the separation tank 17, the filter 19 is submerged in the drainage POME. At least a part of the solid SLD in the drainage POME is captured by the filter 19. When the filter 19 captures the solid SLD, the filter 19 is lifted from the separation tank 17 and the solid SLD is taken out from the filter 19.

  In the separation tank 17, the crude palm oil CPO in the drainage POME is floating on the surface of the drainage POME. The skimmer 18 scrapes and captures the crude palm oil CPO floating on the surface of the drainage POME. Further, the solid SLD in the drainage POME that has not been captured by the filter 19 is precipitated at the bottom of the separation tank 17. Then, the precipitated solid SLD is taken out from the bottom of the separation tank 17.

The solid SLD taken out from the filter 19, the solid SLD taken out from the bottom of the separation tank 17, and the crude palm oil CPO captured by the skimmer 18 are sent to the drying chamber 24 of the second dryer 23. And in the separation tank 17, the water in the drainage POME is separated and remains as water WTR1. The water WTR1 is sent to the water storage tank 21.
The solid SLD taken out from the filter 19 and the solid SLD taken out from the bottom of the separation tank 17 contain crude palm oil CPO.

The step of separating the water WTR1 from the drainage POME in the separation tank 17 is a third step S3.
Steam STM1 is sent from the boiler 14 to the heating chamber 25 of the second dryer 23. The heat of the steam STM1 is transferred from the heating chamber 25 to the drying chamber 24 via the partition wall 26. The crude palm oil CPO and the solid SLD in the drying chamber 24 are heated by the heat of the steam STM1 transmitted from the drying chamber 24.

When the crude palm oil CPO and the solid SLD are heated in the drying chamber 24, the pump 28 sucks the air in the drying chamber 24 and the pressure in the drying chamber 24 is reduced to an atmospheric pressure or lower. In the drying chamber 24 that has become a reduced pressure environment, water contained in the heated crude palm oil CPO and the solid SLD evaporates as a vapor STM2. The pump 28 sucks the steam STM2 together with the air in the drying chamber 24. The air in the drying chamber 24 sucked by the pump 28 and the steam STM2 flow into the primary side of the condenser 30.
The steam STM2 that has flowed into the condenser 30 is cooled by the cooling water flowing on the secondary side of the condenser 30, is condensed and liquefied, and becomes water WTR2. The water WTR2 is sent from the capacitor 30 to the water tank 21.
Water WTR 3 is accumulated in the water storage tank 21. Water WTR3 is a mixture of water WTR1 and water WTR2.

When the evaporation of the steam STM2 from the crude palm oil CPO and the solid SLD is completed in the second dryer 23, the crude palm oil CPO and the solid SLD are taken out from the drying chamber 24 and sent to the storage tank 32. . The crude palm oil CPO and the solid SLD sent to the storage tank 32 are mixed by the impeller of the storage tank 32 to become the first mixture M1.
The main components of the first mixture M1 are crude palm oil CPO and oil palm pulp. The first mixture M1 also includes palm kernel oil squeezed out by the screw press 12. Livestock and the like can ingest these components contained in the first mixture M1 as feed, so the first mixture M1 can be used as feed for livestock and the like.

  In the second dryer 23, the water contained in the crude palm oil CPO and the solid SLD is evaporated to become the steam STM2, and in the condenser 30, the steam STM2 is liquefied to become the water WTR2, and the water WTR2 is changed to the water tank 21. The process until the crude palm oil CPO and the solid SLD become the first mixture M1 in the storage tank 32 is the fourth process S4.

  As shown in FIG. 3, the ash A produced by burning the debris WRC is taken out from the furnace 15 of the boiler 14. The ash A taken out from the furnace 15, the water WTR 3 in the water storage tank 21, and calcium silicate are charged into the mixing tank 34. Those charged in the mixing tank 34 are mixed by the impeller in the mixing tank 34 to become the second mixture M2. The second mixture M2 is sent from the mixing tank 34 to the reaction tank 36.

Concentrated sulfuric acid is added to the second mixture M2 in the reaction vessel 36, and the concentrated sulfuric acid and the second mixture M2 are mixed in the reaction vessel 36 by an impeller. The calcium silicate in the second mixture M2 reacts with concentrated sulfuric acid, and the second mixture M2 is solidified to become the third mixture M3.
In mixing tank 34, second mixture M2 is made from ash A, water WTR3, and calcium silicate, and in reaction tank 36, concentrated sulfuric acid is added to second mixture M2 to form third mixture M3. This step is the fifth step S5.

  The third mixture M3 contains potassium derived from the debris WRC, various organic components derived from oil palm, silicon and calcium derived from calcium silicate, and sulfur derived from concentrated sulfuric acid. These components are useful components for plant growth. Therefore, it is possible to fertilize the 3rd mixture M3 as a fertilizer. It is also possible to use the third mixture M3 as a fertilizer raw material.

  In the present embodiment, dust contained in the exhaust gas G discharged from the first dryer 13 may be captured and recovered, and the recovered dust may be put into the mixing tank 34 together with the ash A. Various components contained in the empty fruit bunch EFB are mixed in the dust. These ingredients can be put into the second mixture M2 and finally returned to the soil as fertilizer.

It is also possible to send the vapor generated from the debris WRC in the first dryer 13 to the condenser 30 to condense and liquefy it, and send this liquefied water to the water storage tank 21 to be a part of the water WTR3. is there.
Furthermore, it is also possible to heat the crude palm oil CPO and the solid matter SLD in the drying chamber 24 of the second dryer 23 by the heat of the exhaust gas G in the furnace 15 of the boiler 14. In this case, the exhaust gas G can be sent directly to the drying chamber 24, and the exhaust gas G can be sent to the heating chamber 25.

DESCRIPTION OF SYMBOLS 10 Processing facility 12 Screw press 13 1st dryer 14 Boiler 15 Furnace 17 Separation tank 18 Clearance 19 Filter 21 Water storage tank 23 2nd dryer 24 Drying room 25 Heating room 26 Bulkhead 28 Pump 30 Capacitor 32 Storage tank 34 Mixing tank 36 reaction tank S1 1st process S2 2nd process S3 3rd process S4 4th process S5 5th process CPO Crude palm oil EFB Empty fruit bunches discharged from the production process of crude palm oil WRC Empty fruit bunches Waste of POME Waste discharged from the production process of crude palm oil SLD Solid matter in waste liquid G Exhaust gas generated from boiler furnace STM1 Steam generated from boiler STM2 Steam evaporated from crude palm oil and solid matter WTR1 Waste liquid Water separated from the water WTR2 Water condensed by the condenser WTR3 Water in the reservoir A A Empty fruit bunch Ash M1 debris was Deki burning first mixture M2 second mixture M3 third mixture

Claims (8)

A first step of squeezing empty palm bunch discharged in the process of producing crude palm oil from oil palm pulp;
A second step of burning the empty fruit bunch debris remaining after squeezing in the first step in a furnace, and the waste discharged in the process of producing crude palm oil, Processing method. In the second step, the remnants of empty fruit bunches are heated and then burned in a furnace,
2. The exhaust in the process of producing crude palm oil according to claim 1, wherein the heat source for heating in the second step is an exhaust gas exiting from a furnace for burning empty fruit bunch debris in the second step. Waste disposal methods. A third step of separating water from the drainage discharged in the course of producing the crude palm oil and taking out the crude palm oil and solids contained in the drainage;
By heating the crude palm oil and solid matter taken out in the third step under a reduced pressure environment, water contained in the crude palm oil and solid matter taken out in the third step is evaporated. And a fourth step of mixing the crude palm oil remaining after the water evaporates and the solid matter to form a first mixture, wherein the crude palm oil according to claim 1 or 2 is used. Of waste generated in the production process.   In the fourth step, the crude palm oil and solid matter obtained by extracting the crude palm oil squeezed and squeezed from the fruit remaining in the empty fruit bunch of the oil palm in the first step in the third step The first mixture is prepared by heating under reduced pressure environment, evaporating the water contained in the crude palm oil and solids, and mixing the remaining crude palm oil and solids after the water has evaporated The processing method of the waste discharged | emitted in the process of producing the crude palm oil of Claim 3 characterized by these.   The heat source for heating under a reduced pressure environment in the fourth step is steam generated from a boiler that uses a furnace that burns the remnants of empty fruit bunches in the second step as a heat source. Or the processing method of the waste discharged | emitted in the process of manufacturing the crude palm oil of Claim 4.   The ash produced by burning empty fruit bunch debris in the second step, the water separated from the effluent in the third step, and the vapor evaporated from the crude palm oil and solids in the fourth step Containing water obtained by condensation and calcium silicate to form a second mixture, and adding a concentrated sulfuric acid to the second mixture to solidify to form a third mixture. The processing method of the waste discharged | emitted in the process of manufacturing the crude palm oil as described in any one of Claims 3-5 characterized by the above-mentioned.   The dust in the exhaust gas generated from the furnace for burning empty debris in the second step is captured and recovered, and the dust recovered from the exhaust gas is collected in the second mixture in the fifth step. A method for treating waste discharged in the process of producing crude palm oil according to claim 6.   The empty fruit bunch debris is heated in the second step and then burned in a furnace, and the water obtained by condensing the vapor evaporated from the heated empty fruit bunch debris is used in the fifth step. The method for treating waste discharged in the course of producing crude palm oil according to claim 6 or 7, wherein the waste mixture is mixed into the second mixture.

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