JP2013119621A - Method for manufacturing fuel oil - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for manufacturing a fuel oil of which a stable condition can be maintained for a long period of time, and which is transparent and has a high commercial value.SOLUTION: In the method, in a first process, water mixed with an enzyme is circulated for a required time after mixing and aerating water containing the enzyme through a first circulation route R1 composed of a tank 4 containing the water with the enzyme, a degassing means 10, a mineral removing means 12 and a mixer 11. In a second process, blend oil of raw oil and a surfactant is circulated for a required time through a second circulation route R2 composed of a blend oil-water tank 5, a degassing means 13, a mixer 14 and a temperature adjusting means 18, and then bend oil-water of the water mixed with the enzyme circulated in the first process and the circulated blend oil is further circulated for a required time in the second circulation route R2. The blend oil-water circulated in the second process is stood still in an oil water stand-still tank 8 for a required time. Thus, a transparent layer part M in an upper part and a milky white layer N containing the oil that precipitates in the lower part are separated in the tank 8, and the transparent layer part M is taken out as the fuel oil.

Description

  The present invention relates to a method for producing a fuel oil in which a predetermined ratio of water is mixed and dispersed in a raw material oil.

  In recent years, for example, fuel oil in which water is dispersed in the form of fine particles in heavy oil has attracted attention and has been studied because it has effects such as saving fuel costs of heavy oil and reducing NOx and SOx in combustion exhaust gas. . As a method for producing such fuel oil, many methods are employed in which an activator is added to an emulsifier, water is dispersed in heavy oil, and the mixture is stirred with a stirrer.

  However, since the fuel oil produced by the method as described above has low permeability and stability, when stored for a long period of time, it becomes impossible to use oil-water separation or an emulsified oil with low use value. It may become.

  In view of the above circumstances, an object of the present invention is to provide a method for producing a fuel oil that can maintain a stable state for a long period of time and is transparent and has a high commercial value.

  Means for solving the above problems will be described with reference numerals in the embodiments described later. The fuel oil production method according to the first aspect of the present invention includes an enzyme in water, mixed and aerated, A first step of circulating the enzyme-containing water for a required time in a first circulation route R1 formed by the enzyme-containing water tank 4, the degassing means 10, the mineral removing means 12, and the mixer 11, the raw material oil, and the interface The mixed oil with the activator is circulated for a required time in the second circulation route R2 formed by the mixed oil water tank 5, the deaeration means 13, the mixer 14 and the temperature adjustment means 18, and then circulated in the first step. A second step of circulating the mixed oil water of the enzyme-containing water and the circulated mixed oil further for a required time in the second circulation route, and the mixed oil water circulated in the second step is left as oil water By leaving it in the tank 8 for the required time And a third step of separating the transparent layer portion M on the upper side in the tank 8 and the milky white layer portion N containing the oil settled on the lower side, and taking out the transparent layer portion M as fuel oil. .

  According to a second aspect of the present invention, in the method for producing fuel oil according to the first aspect, the milky white layer portion N containing the oil settled below the oil-water stationary tank 8 is applied to the centrifugal separator 16 to be further transparent. The liquid is separated into a milky white liquid and the transparent liquid is taken out as fuel oil.

  According to a third aspect of the present invention, in the method for producing a fuel oil according to the first or second aspect, the raw material oil is composed of petroleum liquid fuel.

  According to a fourth aspect of the present invention, in the method for producing fuel oil according to any one of the first to third aspects, soft water is used as the water.

  A fifth aspect of the present invention is the method for producing fuel oil according to any one of the first to fourth aspects, wherein methanol is mixed in the enzyme-containing water.

  According to a sixth aspect of the present invention, in the method for producing fuel oil according to any one of the first to fifth aspects, the deaeration means 10 or 13 comprises a vacuum pump.

  A seventh aspect of the present invention is the fuel oil production method according to any one of the first to sixth aspects, wherein the mineral removing means 12 is an electromagnetic water heater.

  An eighth aspect of the present invention is the fuel oil production method according to any one of the first to seventh aspects, wherein the mixer 11 or 14 is a line mixer.

  A ninth aspect of the present invention is the method for producing fuel oil according to any one of the first to eighth aspects, wherein the transparent layer portion M as the fuel oil taken out from the oil / water stationary tank 8 is filtered through a filter 15. It is characterized by.

  The effect of the invention by the above solution will be described with reference numerals of the embodiments described later. According to the fuel oil production method of the invention according to claim 1, air and minerals in water are removed by the first step. In addition, the water and the enzyme can be further mixed, and the mixed oil of the raw material oil and the surfactant can be circulated in the second circulation route in the second step, and can be maintained at a constant temperature. The mixed oil kept at the constant temperature can be sufficiently mixed with the enzyme-containing water. Further, since the separated transparent layer part M is taken out as fuel oil by the third step, it becomes easy to disperse and mix water in the raw material oil, and the oil and water are not separated over a long period of time, In addition, it is possible to produce a transparent and highly commercial fuel oil.

  According to the invention which concerns on Claim 2, the stable fuel oil can be taken out efficiently.

  According to the invention which concerns on Claim 3, heavy oil and light oil which are petroleum liquid fuel can be made into stable fuel oil.

  According to the invention which concerns on Claim 4, more stable fuel oil can be obtained by using soft water as water.

  According to the invention which concerns on Claim 5, a fuel oil with high fuel efficiency can be manufactured by mixing methanol in the enzyme-containing water.

  If a vacuum pump is used as the deaeration means 10 or 13 as in the invention according to claim 6, the air component in the water can be effectively removed.

  When an electromagnetic water heater is used as the silica removing means 12 as in the invention according to claim 7, minerals in water can be effectively removed.

  When a line mixer is used as the mixer 11 or 14 as in the invention according to claim 8, not only mixing / stirring but also water dispersion / emulsification with oil can be effectively performed.

  As in the invention according to claim 9, by applying the transparent layer portion M as the fuel oil taken out from the oil / water stationary tank 8 to the filter 15, impurities such as dust can be removed, and further, the fuel efficiency Can be raised.

It is explanatory drawing which shows the fuel oil manufacturing system which concerns on one Embodiment of this invention.

  An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 shows a fuel oil production system. By this fuel oil production system, for example, light oil is used as a raw material oil. A method for producing the fuel oil will be described in detail below.

  First, water is stored in the water tank 1 and an enzyme is added to the water and mixed. The mixing ratio of the enzyme and water is, for example, 1: 500 to 3000 by weight. This enzyme has a function of facilitating mixing of water and oil, which will be described later, or mixing of water, oil and methanol. Lipolytic enzyme is used as this enzyme, and soft water with a small amount of mineral is used as water. This is because if hard water containing a large amount of minerals such as magnesium and calcium is used, the minerals such as magnesium adversely affect the function of the enzyme. Therefore, as shown in FIG. 1, soft water can be stored in the water tank 1 by providing the water softening device 17 in the water supply pipe Lo connected to the water tank 1. Note that the soft water may be stored directly in the water tank 1 without providing the water softening device 17.

  In the water tank 1, the water and the enzyme are stirred and mixed, and the water is continuously aerated (aerated). Although illustration is omitted, stirring and mixing of water and enzyme and aeration can be performed by installing an air pump in the water tank 1, for example. The stirring and mixing and aeration are continuously performed for 24 to 48 hours. In FIG. 1, P is a pump, A is a flow meter, Q is a pressure gauge, V is a manual open / close valve, and AV is an automatic open / close valve.

  While the enzyme-containing water mixed and aerated as described above is supplied from the water tank 1 to the tank 3 by the pump P through the pipe L1, the methanol stored in the methanol tank indicated by 2 is supplied. Is supplied from the methanol tank 2 to the methanol mixing tank 3 by the pump P through the pipe line L2. And in this tank 3, methanol and the water containing an enzyme are stirred and mixed by the volume ratio of 2: 8, for example. This stirring and mixing is performed by a stirrer 16 installed in the methanol mixing tank 3. The stirring and mixing time is 10 to 20 minutes. In addition, as shown in this embodiment, although it is not necessary to stir and mix methanol with respect to water, it is preferable to stir and mix. This is because the fuel oil produced has the effect of increasing the fuel efficiency.

  Thus, after mixing methanol and the enzyme-containing water in the methanol mixing tank 3 at a certain ratio, the mixed water of the enzyme-containing water and methanol is introduced into the mixing water tank 4. The first circulation route R1 formed by the pipes L4 and L5 connecting the mixed water tank 4, the deaeration means 10, the mixer 11, and the mineral removal means 12 is required in the direction indicated by the arrow in the figure (for example, 10 Circulation) to remove air and minerals (eg, silica) in the mixed water and further mix the water and enzyme. Here, the deaeration means 10 comprises a vacuum pump, the mixer 11 comprises a line mixer, and the mineral removal means 12 comprises an electromagnetic water heater.

  Thus, if a vacuum pump is used as the deaeration means 10, the air component in water can be effectively removed. This is because if the air component is contained in the water, the mixing and dispersibility of the water with respect to the oil is deteriorated in the subsequent step. Moreover, if an electromagnetic active water device is used as the mineral removing means 12, the mineral (for example, silica) in water can be removed effectively. This is because when the mineral (for example, silica) is combined with the enzyme, the function of the enzyme is deteriorated. A line mixer is effective as the mixer 11. This line mixer is a static mixing stirrer and is optimal not only for mixing and stirring but also for dispersing and emulsifying water in oil.

  As described above, the mixed water of methanol and enzyme-containing water is circulated through the first circulation route R1 including the mixed water tank 4, the deaeration means 10, the mixer 11, and the silica removal means 12 for a required time (for example, 10 minutes). As a result, the mixed water of methanol and enzyme-containing water can be sufficiently stirred and mixed, and air components and minerals (for example, silica) in the water can be effectively removed.

  The mixed water from which air and minerals (for example, silica) have been removed by circulating through the first circulation route R1 is supplied to the mixed oil / water tank 5 through the pipeline L6 extending linearly from the pipeline L4 of the first circulation route R1. And mixed with the feedstock and surfactant. Raw material oil (for example, light oil) is stored in the raw material oil tank 6, and is supplied from the raw material oil tank 6 to the mixed oil / water tank 5 through the pipe L 7 by the pump P. The surfactant is supplied from the surfactant tank 7 to the mixed oil / water tank 5 through the pipe L8 by the pump P. In this case, the mixing ratio of the enzyme-containing water and oil (light oil) mixed in the mixed oil / water tank 5 is 2: 8 in volume ratio.

  The mixed oil of the mixed water, the oil and the surfactant thus supplied to the mixed oil / water tank 5 is formed by pipes L9 and L10 connecting the mixed oil / water tank 5, the deaeration means 13 and the mixer 14 as shown in the figure. By circulating the second circulation route R2 in the direction of the arrow in the figure for a required time (for example, 10 minutes), the air in the mixed oil water is removed, and the mixed water, the raw material oil, and the surfactant are further stirred and mixed. . In this case, a temperature adjusting heater is interposed as the temperature adjusting means 18 in the second circulation route R2. For example, sorbitan monooleate is used as the surfactant. Here again, the deaeration means 13 comprises a vacuum pump, and the mixer 11 comprises a line mixer.

  More specifically, the mixed oil / water tank 5 is first supplied with oil (from the raw material oil tank 6) at approximately the same timing as when the mixed water of methanol and enzyme-containing water is stirred in the first circulation route R1. Gas oil) and the surfactant from the surfactant tank 7 are mixed almost simultaneously, and in the second circulation route R2, the oil (light oil) and the surfactant are mixed for the same required time as the first circulation route R1 ( Circulate (eg 10 minutes). Thereby, the temperature of the mixed oil can be kept constant (for example, about 40 ° C.) by the temperature adjusting means 18, and the mixing of water and oil can be made easier. Then, the mixed water is supplied to the mixed oil / water tank 5, and further, the mixed oil / water (light oil) and the surfactant are removed from the tank 4 for a required time (for example, 10 minutes). The gas is circulated in a second circulation route R2 including the gas means 13, the mixer 14, and the temperature adjusting means 18. Thereby, while being able to fully stir and mix this mixed oil water, the air component in mixed oil water can be removed thoroughly.

  Thus, the mixed oil water circulated through the second circulation route R2 for a required time is introduced into the oil / water static tank 8 through the pipe L11 and allowed to stand in the tank 8 for a required time (for example, 24 hours). The transparent layer part M on the upper side in the tank 8 is separated into the milky white layer part N containing the oil that has settled on the lower side. Thereby, the transparent layer M on the upper side in the tank 8 is supplied to the product (fuel oil) tank 9 by the pump P through the pipe L12, and is filtered by the filter 15 provided in the middle of the pipe L12. Remove impurities such as dust.

  On the other hand, the milky white layer portion N containing the oil settled in the lower part of the oil / water stationary tank 8 is introduced into the centrifuge 16 by the pump P through the conduit L13 and applied to the centrifuge 16 as shown in the figure. Further, the transparent liquid and the milky white liquid are separated, the transparent liquid is fed from the line L14 to the line L12, supplied to the product tank 9 through the filter 15, taken out as a product (fuel oil), and separated from the clear liquid. The done residue is sent to the discharge place by the pipe L15. This residue can be used in the water tank 1.

  According to the production method described above, it is easy to disperse and mix water into the raw material oil, and to produce a highly stable and highly transparent fuel oil with little water separation for about one year. Can do. That is, high-quality fuel oil is, for example, a ratio of oil to mixed water of 8: 2 by volume ratio, a mixing ratio of 10%, and a ratio of oil to mixed water of 7: 3 by volume ratio, mixing ratio. 15% clean oil that emits less oxides such as NOx and SOx.

  Further, the fuel oil produced by this production method is a permeable liquid and burns completely, so that the fuel efficiency can be improved.

  In the method of the present invention, for example, biomass fuel other than petroleum-based liquid fuel can be used.

1 Water tank 2 Methanol tank 3 Water methanol tank 4 Mixed water tank 5 Mixed oil / water tank 7 Surfactant tank 8 Oil / water stationary tank 9 Product tank 10, 13 Deaeration means (vacuum pump)
11,14 mixer (line mixer)
12 Mineral removal means (electromagnetic water heater)
18 Temperature adjustment means (temperature adjustment heater)
R1 1st circulation route R2 2nd circulation route M Transparent layer part N Milky white layer part

Claims (9)

After mixing and aeration with an enzyme in water, the first step of circulating the enzyme-containing water for a required time through a first circulation route formed by the enzyme-containing water tank, the deaeration means, the mineral removal means, and the mixer When,
The mixed oil of the raw material oil and the surfactant is circulated for the required time in the second circulation route formed by the mixed oil water tank, the deaeration means, the mixer and the temperature adjustment means, and then circulated in the first step. A second step of circulating a mixed oil water of the enzyme-containing water and the circulated mixed oil for a further required time in the second circulation route;
The mixed oil water circulated in the second step is allowed to stand for a required time in an oil water static tank, thereby separating the transparent layer part on the upper side of the tank and the milky white part containing the oil that has settled on the lower side, And a third step of taking out the transparent layer portion as fuel oil.   The milky white layer portion containing the oil settled down in the oil-water stationary tank is further separated into a transparent liquid and a milky white liquid by applying a centrifugal separator, and the transparent liquid is taken out as fuel oil, The method for producing a fuel oil according to claim 1.   The method for producing fuel oil according to claim 1, wherein the raw material oil is composed of petroleum liquid fuel.   The method for producing fuel oil according to any one of claims 1 to 3, wherein soft water is used as the water.   The method for producing fuel oil according to any one of claims 1 to 4, wherein methanol is mixed in the enzyme-containing water.   The method for producing fuel oil according to any one of claims 1 to 5, wherein the deaeration means comprises a vacuum pump.   The said mineral removal means consists of electromagnetic water heaters, The manufacturing method of the fuel oil in any one of Claims 1-6 characterized by the above-mentioned.   The said mixer is a line mixer, The manufacturing method of the fuel oil of any one of Claims 1-7 characterized by the above-mentioned.   The method for producing fuel oil according to any one of claims 1 to 8, wherein the transparent layer portion as fuel oil taken out from the oil-water stationary tank is filtered and filtered.

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