KR100743646B1 - Apparatus for processing liquid fuel mixed by coal, oil and water, method of processing mixed liquid fuel and mixed liquid fuel thereof - Google Patents

Abstract

A mixed liquid fuel, an apparatus for manufacturing the mixed liquid fuel, and a method for manufacturing the mixed liquid fuel are provided to prevent dust particles from being generated while coal is transferred, by mixing coal and oil to manufacture the mixed liquid fuel. A crusher(11) crushes coal to 150 to 250 mesh sizes. A crush storage unit(12) stores the crushed coal. A first stirrer(13) stirs liquid where the crushed coal, water, and a coagulating agent are inputted and mixed. A first reservoir(17) stores de-ached coal, which is stirred and extracted within the first stir. A second reservoir(18) is directly connected to the crush storage unit to store the crushed coal. A selection valve(19) opens the first reservoir or the second reservoir selectively. A measurer(20) measures the amount of the coal or the de-ached coal supplied through the selection valve. A second stirrer(21) mixes water and oil into the coal or the de-ashed coal supplied from the measurer, and stirs the mixture. An ultrasonic wave processing unit(22) applies ultrasonic waves to the mixture stirred within the second stirrer.

Description

Apparatus for processing liquid fuel mixed by coal, oil and water, method of processing mixed liquid fuel and mixed liquid fuel approximately}

1 is a view showing an apparatus for producing a mixed liquid fuel according to an embodiment of the present invention.

Figure 2 is a process chart showing a method for producing a mixed liquid fuel according to an embodiment of the present invention.

Figure 3 is a process chart showing a method for producing a mixed liquid fuel according to an embodiment of the present invention.

The present invention relates to a mixed liquid fuel manufacturing apparatus for mixing coal and oil, a method for preparing a mixed liquid fuel using the same, and a mixed liquid fuel produced by the same, and more specifically to mixing coal, oil and water in a predetermined ratio. Apparatus for manufacturing a liquid fuel, a mixed liquid fuel production method using the same, and a mixed liquid fuel produced thereby.

In general, coal is cheaper than oil, which has a limited distribution area and reserves, and has a long depreciation year and is widely distributed throughout the world. However, compared to petroleum, coal has disadvantages of storage, transportation, combustion inconveniences and environmental pollution problems, and requires extensive equipment for transportation.

Therefore, the use of coal in the transportation sector may not be suitable for use due to these problems. However, the situation is different in the case of industrial and power plants except transportation. The most problematic problem in coal use in these fields is environmental problem. Recently, environmental technology has developed so rapidly that there is no difference between the exhaust gas treatment during coal combustion and the exhaust gas treatment during petroleum combustion. Reached.

However, coal is still a solid fuel, which is inconvenient compared to petroleum in transportation and storage. Accordingly, a technology for liquefying coal and using it as a liquefied fuel such as petroleum was developed. As a prior art, Korean Patent Publication No. 1989-0010169 discloses a mixed liquid fuel of coal, water and oil and a method of manufacturing the same. In the published patent, coal, water, and hydrocarbon-based oil are mixed to produce a liquid coal fuel.

However, even if the coal is produced as a liquid fuel as disclosed in the above-mentioned patent, the problem of ashing remaining during the combustion of coal remains a troublesome problem. In addition, since coal contains 0.3 to 7% of sulfur, there is a problem that a high performance exhaust gas treatment device must be performed.

The present invention is to solve the above problems, to provide a mixed liquid fuel manufacturing apparatus for mixing oil and water by grinding coal such as anthracite or bituminous coal, to provide a mixed liquid fuel manufacturing method using the same and the mixed liquid fuel produced thereby It is for.

Mixed liquid fuel production apparatus according to the present invention for achieving the above object is a pulverizer for grinding coal to 150 ~ 250 mesh size; A crush storage unit for storing the coal pulverized in the crusher; A first stirrer to which the coal, water, and flocculant provided in the crushing storage unit are added, and the mixed mineral solution is mixed at a concentration of 30 to 40%; A first reservoir for transporting and storing delimed coal extracted by stirring in the first stirrer; A second reservoir provided separately from the first reservoir and directly connected to the crushing reservoir to transfer and store the coal; A selection valve for selectively opening the first reservoir or the second reservoir; A meter for metering the coal or demineralized coal provided through the selection valve; A second stirrer for mixing water and oil in a predetermined weight ratio to the coal or the demineralized coal provided by the meter; Ultrasonic treatment unit for irradiating the ultrasonic wave to the mixture stirred in the second stirrer.

It may be provided with a refining recovery tank in which the gangue material separated from the first stirrer is separated and stored, and a purifier for recovering and refining the flocculant separated from the precipitation recovery bin in the precipitation recovery bin.

The flocculant purified in the purifier may be supplied to the second stirrer.

Mixed liquid fuel according to the present invention for achieving the above object is 30 ~ 60 weight ratio of demineralized coal extracted by stirring the coal and water and the mineral liquid to which the flocculant is added to 150 ~ 250 mesh size, 5 to 10 weight ratio of water And, 30 to 60 weight ratio of the oil is mixed and stirred and then irradiated with ultrasonic waves of a predetermined frequency.

The flocculant may be any one selected from kerosene, diesel oil, bunker-C oil, and DMU-101.

Mixed liquid fuel production method according to the present invention for achieving the above object comprises the steps of crushing and storing coal to 150 ~ 250 mesh size; Transporting and storing the pulverized coal; Measuring and transporting the stored coal; Mixing and stirring 30 to 60 weight ratio of the coal and the weight of the water, 5 to 10 weight ratio of water, and 30 to 60 weight ratio of oil; Irradiating the ultrasonic wave of a predetermined frequency to the mixture is provided.

Mixed liquid fuel production method according to the present invention for achieving the above object comprises the steps of crushing and storing coal to 150 ~ 250 mesh size; Adding water to the pulverized coal and mixing and stirring the mineral solution to have a concentration of 30 to 35%; Adding a flocculant to the stirred mineral liquid and stirring the flocculant for a predetermined time to contact the coal; Separating and extracting the demineralized coal separated from the gangue water after the stirring; Mixing and stirring 30 to 70 weight ratio of the demineralized coal, 5 to 10 weight ratio of water, and 30 to 70 weight ratio of oil; Irradiating the ultrasonic wave of a predetermined frequency to the mixture is provided.

The flocculant may be any one selected from kerosene, diesel oil, BC oil and DMU-101.

Hereinafter will be described an embodiment of the mixed liquid fuel production equipment according to the present invention. 1 is a view showing a mixed liquid fuel production apparatus according to an embodiment of the present invention.

First, a coal storage 10 is provided in which coal ore is provided and stored. The coal provided to this coal storage 10 can use either anthracite coal or bituminous coal. And if necessary, the coal storage 10 may be provided separately from anthracite coal and bituminous coal storage. And before the coal storage 10 may be provided with a hopper (hopper) and the transfer device for the collection and transport of coal transported from the outside.

The coal storage 10 is then provided with a crusher 11 such as a jaw crasher, roll crasher or roll mill to crush coal. The crusher 11 pulverizes the coal supplied from the coal reservoir 10 to a particle size of 150 to 250 mesh. And there is provided a crushing reservoir 12 in which the coal pulverized in the coal crusher 11 is stored. Two coal feed passages are connected to the mill 12. In addition, the grinder 11 and the pulverization storage 12 may be provided with a dustproof equipment for removing coal dust generated when the coal is crushed. In the case of a dustproof installation, it may be installed to recover the coal in the dust state back to the coal storage (10).

Meanwhile, the first supply path 15, which is one of the coal supply paths, is directed toward the first storage 17 through the first stirrer 13, which will be described later, and the second supply path 16 is the second storage 18, which will be described later. Head to). The first supply path 15 and the second supply path 16 are configured in the form of a case blocked from the outside. And these coal supply paths 15 and 16 are comprised so that the dust-proof processing by the dustproof installation which is not shown in figure is performed.

In the case of coal supplied to the first supply path 15, anthracite coal may be used, and coal supplied to the second supply path 16 may use bituminous coal. Anthracite contains approximately 18.1% ash, while bituminous coal contains approximately 3.1%. Therefore, in the case of anthracite coal can be effectively used by deliming treatment, in the case of bituminous coal can be effectively used without a separate deliming operation. However, bituminous coal can also be used by deliming.

In the first stirrer 13 connected to the first supply passage 15, coal in a fine powder state, water and oil-based coagulant provided separately from the coal are introduced. And the coal, water and oil mixed with the mineral liquid is stirred to perform desulfurization and deliming treatment of coal. At this time, the coal concentration of the mixed mineral liquid is to be 30 ~ 35%. And the stirring conditions of the first stirrer 13 is first put water to 1,000rpm ~ 2,000rpm, suitably stirred for 3 to 5 minutes at a stirring speed of about 1,500rpm, and then added a flocculant to 1,000rpm ~ 2,000rpm For 3 to 5 minutes at an agitation speed of about 1,500 rpm, suitably, the coal is demineralized after being left to stand for 10 to 15 minutes for separation of coal particles and gangue. Perform separation of gangue. The demineralized coal separated from the gangue can also be washed again to further remove residual gangue.

Thus, desulfurization and deliming of coal are performed by stirring by the 1st stirrer 13. That is, the coal particles in the particulate state are agglomerated into floc state with weak cohesive force by stirring with water and the coagulant, so that the surface of the coal particles has a stronger hydrophobicity, so that the coal particles and water have a large repulsion force. Thereby separating the gangue and coal by gathering only the coal particles agglomerated at the top of the mineral liquid.

 At this time, the oil-based flocculant can be used by selecting kerosene, diesel oil, BC oil, or "DMU-101", a collector developed by the Korea Institute of Resources.

And the separation of the gangue water and the demineralized coal is separated by installing a stop valve (14) in the lower portion of the first stirrer (13). That is, the demineralized coal floats on the upper part of the first stirrer 13, and the gangue water sinks on the lower part. Therefore, the gangue water can be separated by controlling the stop valve 14 on / off. And the demineralized coal is conveyed to the 1st storage 17 by the conveying apparatus. This conveying apparatus has an automatic conveying apparatus such as an auger mounted in a cylindrical case, and a lower end of the automatic conveying apparatus is installed to enter and exit the first stirrer 13.

Accordingly, demineralized coal is stored in the first reservoir 17, and crushed coal is stored separately in the second reservoir 18. In order to selectively supply the coal stored in the first reservoir 17 and the second reservoir 18, selector valves 19 are installed at the lower portions of these reservoirs 17 and 18. Therefore, the selector valve 19 may supply demineralized coal or finely pulverized coal as needed or at the user's option.

After the selector valve 19, the meter 20 is installed. The meter 20 is provided as a weight meter 20 having a weight sensor and installed to interlock with the selection valve 19. That is, when the selector valve 19 "turns on" one of the first reservoir 17 and the second reservoir 18, the coal of the selected reservoir is supplied, and then the weight of the coal supplied from the meter 20 is If the weight is set, the selector valve 19 can be " off " to control the weight of the coal finally supplied.

After the meter 20 is provided with a transport path. This coal transfer furnace employs an ogre and conveyor system. After the transfer path, a second stirrer 21 is installed. The second stirrer 21 converts the coal, water, and oil supplied at a relatively low speed rotation of several tens of rpm to the first stirrer 13 into a liquid phase.

Ultrasonic waves of 10,000-20,000 Hz are applied to the second stirrer 21 to remove the surface tension inherent in coal particles and water to stabilize the mixed state. And the mixture at this time is mixed with 30 to 60 weight ratio of coal, 5 to 10 weight ratio of water, and 30 to 60 weight ratio of oil. In this case, the oil used may be bunker-C oil, or diesel and kerosene may also be used.

Thereafter, a mixed liquid fuel reservoir 24 having a transfer path for transferring the slurry mixture to an appropriate level and a filter 23 installed in the transfer path and finally storing the mixed liquid fuel is provided.

Meanwhile. The oil supplied to the second stirrer 21 may reuse the oil coagulant used in the first stirrer 13. To this end, the first stirrer 13 is connected to the settling recovery 30 to recover the separated wort. In this precipitation collection | recovery warehouse 30, the demineralized component subsides | stores by storing pulverized water for more than predetermined time, and oil and water components float in the upper part. Therefore, after extracting the oil component suspended in the upper portion, it is possible to remove the floating foreign matter from the extracted oil component in the purifier 31 and then supply it to the second stirrer 21.

Hereinafter will be described a method for producing a mixed liquid fuel according to an embodiment of the present invention.

Mixed liquid fuel manufacturing method according to an embodiment of the present invention can be carried out by two manufacturing methods. The first can be carried out using pulverized coal, the second can be carried out using desulfurized, demineralized coal after pulverization of coal.

Figure 2 is a process flow diagram illustrating a mixed liquid fuel manufacturing method according to a first embodiment of the present invention. As shown in FIG. 2, first, as a first manufacturing method, coal is pulverized to a size of 150 to 250 mesh using a grinder 11 and then stored in a grinding reservoir 12 (S100). Thereafter, the pulverized coal is transferred and stored in the second reservoir 18 through the second transfer path 16 (S110), and the coal stored in the second reservoir 18 is weighed and then transferred to the second stirrer 21. (S120).

And 30 to 60 weight ratio of coal, 5 to 10 weight ratio of water, and 30 to 60 weight ratio of oil is added to the second stirrer 21 and then stirred (S130). And manufacturing is completed by irradiating (S140) 10,000 ~ 20,000Hz ultrasonic wave to the mixture during stirring.

3 is a process flowchart showing a method of manufacturing a mixed liquid fuel according to a second embodiment of the present invention. As shown in FIG. 3, the coal is pulverized using the grinder 11 to a size of 150 to 250 mesh, and then stored in the grinding storage 12 (S200).

Thereafter, water is added to the pulverized coal, and the mixture is stirred so that the concentration of the mineral liquid is 30 to 35% (S210). At this time, the stirring conditions are 1,000rpm ~ 2,000rpm, suitably made for 3 to 5 minutes at a stirring speed of about 1,500rpm (S210).

Then, the flocculant is added to the stirred mineral liquid, and the flocculant is stirred for a predetermined time so as to contact the coal (S220). At this time, the stirring conditions were stirred for 3 to 5 minutes at a stirring speed of about 1,000 ~ 2000rpm, preferably 1,500rpm, and then allowed to stand for 10-15 minutes after the separation of coal particles and gangue The demineralized coal and gangue are separated using the check valve 14 (S230). The demineralized coal separated from the gangue can then be washed again to further remove residual gangue. The delimed coal is then transferred to the first reservoir 17 by the transfer device (S240).

Then, the demineralized coal stored in the first reservoir 17 is measured and then transferred to the second stirrer 21 (S240). In the second stirrer 21, 30 to 60 weight ratio of demineralized coal, 5 to 10 weight ratio of water, and 30 to 60 weight ratio of oil are added and stirred (S250). And manufacturing is completed by irradiating 10,000 ~ 20,000Hz ultrasonic wave (S260) to the mixture during stirring.

On the other hand, the oil used may be used to recover the oil used in the first stirrer (13). At this time, after collecting the banban liquid in the settling recovery (30) can be used by purifying the oil component through the purifier (31) and then transferred to the second stirrer (21).

The economic efficiency and efficiency for the mixed liquid fuel and bunker-C oil according to an embodiment of the present invention was compared in Table 1 and Table 2.

division $ 30 per barrel $ 60 per barrel Bunker-C 125.56 KRW / L 450 won / L Mixed Liquid Fuel 90.39won / ton 225 won / ton

division Mixed Liquid Fuel Bunker-C Calorific value 8,336kcal / kg 10,340kcal / kg Density 9.2 Lb / L 7.19 Lb / L Viscosity 13,000cps @ 122'F 215cps @ 122'F Flash point 292 degrees 300 degrees Ash 2.5% MAX NA Sulfur 1% MAX 4%

According to Table 1 and Table 2, the mixed liquid fuel according to the present invention has a fuel cost reduction of 20 to 35% compared to the case of using bunker-C oil compared to the cost, and environmental pollutants have a result of less generation of sulfur. . In addition, the amount of carbon dioxide generated is also reduced by more than 20% compared to coal.
Apparatus for producing a mixed liquid fuel in which coal and oil are mixed according to an embodiment of the present invention as described above, a method for preparing a mixed liquid fuel using the same, and a mixed liquid fuel prepared thereby may be partially adjusted or additionally included other components. have. However, all other modified embodiments include the essential elements of the present invention should be considered to be included in the technical scope of the present invention.

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Apparatus for producing a mixed liquid fuel in which coal and oil are mixed according to the present invention as described above, a method for preparing a mixed liquid fuel using the same, and a mixed liquid fuel prepared by the same are used for dust generated during transportation of coal for use as a conventional fuel. It is possible to solve the pollution problem caused by the use of anthracite coal, so that the use of anthracite coal stored in the country can be effectively used to reduce the dependence on petroleum, and also because it is liquid, storage is also easy. In addition, by reducing the generation of ash during combustion, it is possible to reduce the post-combustion treatment and pollution problems, there is less effect of the generation of carbon dioxide than coal, there is also an improved economic effect compared to the existing bunker-C oil.

Claims (8)

Grinder to crush coal to 150-250 mesh size; A crush storage unit for storing the coal pulverized in the crusher; A first stirrer to which the coal, water, and flocculant provided in the crushing storage unit are added, and the mixed mineral solution is mixed at a concentration of 30 to 40%; A first reservoir for transporting and storing delimed coal extracted by stirring in the first stirrer; A second reservoir provided separately from the first reservoir and directly connected to the crushing reservoir to transfer and store the coal; A selection valve for selectively opening the first reservoir or the second reservoir; A meter for metering the coal or demineralized coal provided through the selection valve; A second stirrer for mixing water and oil in a predetermined weight ratio to the coal or the demineralized coal provided by the meter; Mixed liquid fuel production apparatus comprising an ultrasonic treatment unit for irradiating ultrasonic waves to the mixture stirred in the second stirrer. The method according to claim 1, wherein the sediment recovery chamber in which the gangue material separated in the first stirrer is separated and stored, and a purifier for recovering and purifying the flocculant separated in the precipitation chamber from the precipitation chamber Mixed liquid fuel production apparatus, characterized in that. The mixed liquid fuel production apparatus according to claim 2, wherein the flocculant purified in the refiner is supplied to the second stirrer. 30 to 60 weight ratio of demineralized coal, 5 to 10 weight ratio of water, and 30 to 60 weight ratio of oil were mixed by stirring coal and water pulverized to 150 to 250 mesh size and the coagulant-added mineral solution, and then stirred at a predetermined frequency. Mixed liquid fuel, characterized in that obtained by irradiation of the ultrasonic wave. The mixed liquid fuel of claim 1, wherein the flocculant is any one selected from kerosene, diesel oil, BC oil, and DMU-101. Crushing and storing the coal into 150-250 mesh size; Transporting and storing the pulverized coal; Measuring and transporting the stored coal; Mixing and stirring 30 to 60 weight ratio of the coal and the weight of the water, 5 to 10 weight ratio of water, and 30 to 60 weight ratio of oil; Method for producing a mixed liquid fuel, characterized in that for irradiating the ultrasonic wave of a predetermined frequency to the mixture. Crushing and storing the coal into 150-250 mesh size; Adding water to the pulverized coal and mixing and stirring the mineral solution to have a concentration of 30 to 35%; Adding a flocculant to the stirred mineral liquid and stirring the flocculant for a predetermined time to contact the coal; Separating and extracting the demineralized coal separated from the gangue water after the stirring; Mixing and stirring 30 to 60 weight ratio of the demineralized coal, 5 to 10 weight ratio of water, and 30 to 60 weight ratio of oil; Method for producing a mixed liquid fuel, characterized in that for irradiating the ultrasonic wave of a predetermined frequency to the mixture. The method of claim 7, wherein the flocculant is any one selected from kerosene, diesel oil, BC oil, and DMU-101.

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