KR100922366B1 - Apparatus for refining fuel oil including high efficiency apparatus for removing chlorine - Google Patents

Abstract

The present invention relates to a fuel oil refining apparatus for removing chlorine components, and more particularly, to a fuel oil refining apparatus for refining low-cost fuel oils, which occupy most of the fuel oils obtained by pyrolyzing waste plastics, with economical high quality. In particular, the present invention relates to a fuel purification device having a high-efficiency chlorine removal device for further improving the separation and mixing efficiency of the chemical purifier and the water-oil separator and the water-oil mixer in order to effectively remove the chlorine component.

Chlorine Removal Device, Lower Pyrolysis Oil, Refining Equipment, Waste Plastic, Pyrolysis, Efficiency Improvement

Description

Apparatus for refining fuel oil including high efficiency apparatus for removing chlorine}

The present invention relates to a fuel oil refiner and a pyrolytic emulsification system including the same, which relates to a fuel oil refiner for removing impurities and harmful components contained in fuel oil obtained after pyrolyzing polymer waste of plastic waste.

More particularly, the present invention relates to a fuel oil refiner having a high efficiency chlorine removal device for efficiently removing chlorine components contained in the fuel oil in the fuel oil refining apparatus.

More specifically, the present invention provides a chlorine removal device providing a high quality fuel oil by removing chlorine contained in fuel oil obtained by pyrolyzing waste plastic by various methods, a fuel oil refiner including the same, and a pyrolysis emulsion system having the same. .

Plastics composed of hydrocarbons, which are currently used for various purposes, have increased emissions due to industrial development, causing serious social problems that have a significant impact on environmental pollution.

Waste plastics are recently generated in millions of tons per year, most of which are disposed of by landfilling and incineration, but gradually landfilling is impossible and incineration also causes environmental problems such as air pollution. In addition, the recycling of materials is limited to some items with added value, but most of them are economically difficult to recycle. One of them is a method of producing alternative fuel oil by chemically treating waste plastic with heat or a catalyst.

Under these circumstances, it is possible to solve the difficulty of continuous operation by high boiling point materials in the existing process, and to provide stable and continuous operation of the latest scale pyrolysis oil to minimize the environmental problems caused by the generation of harmful air and wastes. There is a need for a device.

Applicant is recognizing the necessity as described above, and invented a system for stably and continuously mass production of alternative fuel oil by pyrolysis of mixed waste plastics, Korean Patent Registration No. 10-0736845 (Invention: Fuel oil refiner) Device and a pyrolysis emulsion system having the same).

According to the above patent, the solid waste plastic and / or liquid waste oil is introduced into a melting tank and melted, and then thermally decomposed in a pyrolysis tank. The oil refinery is refined through a fuel refinery and provided as fuel oil.

However, in the above patent, hydrochloric acid or bromic acid derived from a plastic material containing PVC or bromine-based flame retardant contained in waste plastic could not be removed, and thus it was not good to adversely affect the quality of fuel oil generated after pyrolysis. In other words, the final fuel oil contains impurities such as chlorine or harmful acid components, so when the alternative fuel oil is used, it causes serious problems such as corrosion or aging, etc., and the chlorine component is discharged. There was a problem that adversely affects.

Therefore, in order to safely sell fuel oil obtained from waste plastics as an alternative fuel, it is necessary to develop refining technology to upgrade low-grade fuel oil as described above, and in particular, to develop a fuel oil refiner combined with refining technology to remove chlorine components. It is true.

In order to solve this problem, there is provided a fuel oil refinery device for purifying low-grade fuel oil, which accounts for most of the fuel oil obtained by pyrolyzing polymer waste such as waste plastic, waste synthetic resin, waste rubber, waste oil, etc. with economical high quality. For the purpose of the present applicant has filed a Korean Patent Application No. 10-2007-43953 (name of the invention: fuel oil refinery with a chlorine removal device).

The fuel refining device is a chemical refining device for contacting and mixing lower fuel oil and basic aqueous solution prepared by pyrolyzing and distilling polymer waste such as waste plastic, waste synthetic resin, waste rubber and waste oil by agitation, and in a chemical refining device. A water-oil separator for accommodating a mixture of the treated fuel oil and the basic aqueous solution and separating the fuel oil by phase separation is provided.

In addition, the fuel oil refinery device may be further provided with a water-oil mixture to contact the lower fuel oil and the basic aqueous solution on the upper portion of the chemical purification device.

Accordingly, the basic aqueous solution is brought into contact with the chlorine-containing fuel oil to remove chlorine present in the form of a compound such as hydrochloric acid.

The fuel oil refiner having the chlorine removal device described above is required to improve the separation and mixing efficiency of the chemical refining device and the water-oil separator and the water-oil mixer to improve the chlorine removal efficiency.

The present invention has been made to solve the above problems, and an object of the present invention is to provide a fuel oil refiner for refining low-grade fuel oil, which occupies most of the fuel oil obtained by pyrolyzing waste plastic, at high quality with economical efficiency. ,

In particular, the present invention has a specific purpose to provide a fuel purifier with a high-efficiency chlorine removal device for further improving the separation and mixing efficiency of the chemical purifier and the water-oil separator and the water-oil mixer in order to effectively remove the chlorine component. .

A fuel oil refiner having a high-efficiency chlorine removal device of the present invention for achieving the above object is a chemical purifier (60) for contacting and mixing the lower fuel oil and basic aqueous solution produced by thermal decomposition of the waste plastic by stirring; It comprises a water-oil separator 70 for receiving a mixture of the fuel oil and the basic aqueous solution treated by the chemical purification device 60 and the separated mixture is separated to separate the water and the fuel oil.

The water-oil separator 70 is provided at a tank main body 70a, at one end of the tank main body 70a, and an inlet 71 through which a mixture of the fuel oil and the basic aqueous solution flows in, and the tank main body. A first space portion 72 formed at a portion of the inlet portion 71 so as to temporarily receive and stabilize a mixed solution of the introduced fuel oil and a basic aqueous solution and to remove fine particles contained in the mixed solution; The mixed liquid from which the fine particles are removed from the first space portion 72 is accommodated and is installed inside the tank body 70a and the second space portion 73 adjacent to the first space portion 72. The first space portion 72 and the second space portion 73 are partitioned, the turbulent flow is suppressed, and the layers are separated to facilitate water and oil separation and removal of fine particles, and the first space portion ( 72, the mixed liquid from which the fine particles have been removed is flowed to the second space portion 73. The partition 74 to be accommodated is installed in the tank body 70a, and the mixed liquid in which the fine particles, which are flown into the second space portion 73 and is received, is contacted and the fuel oil from which the water is removed is passed. The first partition wall 75 having the first filter 75a disposed thereon, and the fuel passing through the first filter 75a from the second space portion 73 and installed inside the tank body 70a. A third space portion 76 in which oil is received and adjacent to the second space portion 73; A discharge part 77 installed at the other side end of the tank body 70a to discharge fuel oil passing through the first filter 75a; It is made, including.

In addition, the chemical refining device (60) includes a mixing tank (61) containing lower fuel oil and basic aqueous solution, an agitator (62) built in the mixing tank (61), and the mixing tank (61). It is characterized in that it comprises a basic aqueous solution pump 63 for supplying the lower fuel oil and the basic aqueous solution and the basic aqueous solution supplied from the basic aqueous solution tank together with the chemical purification device (60).

In addition, in order to uniformly mix the mixed liquid of the lower fuel oil and the basic aqueous solution in the mixing tank 61, the mixing tank 61 is provided from the top to the bottom, and a plurality of discharge holes 64a are formed at predetermined intervals. A mixed liquid pump 65 for supplying the discharge tube 64 and the mixed liquid of the lower fuel oil and the basic aqueous solution discharged from the discharge tube 64 to the chemical purifier 60 or the water-oil separator 70. It is characterized in that the further provided.

In addition, the partition 74, the first partition (74a) is installed toward the lower side from the upper end of the inside of the tank body (70a) lower than the inlet portion 71 and the tank body (70b) It is characterized in that it comprises a second partition (74b) that is installed toward the top from the lower end of the interior is installed higher than the lower end of the first partition (74a).

In addition, the lower portion of the first space portion 72, the second space portion 73 and the third space portion 76, the discharge port 78a and the discharge valve to discharge the water to the outside of the tank body 70a 78b are provided, respectively, and are joined to one drain pipe 78c.

In addition, the fuel oil which is installed between the first partition wall 75 and the discharge unit 77 inside the tank body 70a and passes through the first filter 75a provided in the first partition wall 75 is in contact with each other. A second partition wall 79b having a second filter 79a provided thereon to filter the fine particles and a small amount of water in the fuel oil so that the filtered fuel oil passes therethrough, and the second filter 79a passed through the second filter 79a. The fuel oil is accommodated and is further provided with a fourth space portion 79c adjacent to the third space portion 76.

In addition, the outside of the second space portion 73 and the outside of the third space portion 76 is connected to the second space portion 73 and the third space portion 76, respectively, the water level of the received fuel oil It is characterized in that the water level check tube (73a, 76a) for checking each is provided.

As described above, the fuel oil refiner of the present invention improves the mixing and separation efficiency of the chemical refining apparatus, the water-oil mixer, and the water-oil separator, thereby improving the chlorine component contained in the mixed waste plastic containing PVC, which is emerging as an environmental problem. By more effectively removing the chlorine component has the effect of producing a high-quality fuel oil is removed.

In addition, the above-mentioned example is only an example to demonstrate this invention. Therefore, it is obvious that the ordinary skilled in the art to which the present invention pertains uses the partial change with reference to this detailed description.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic view showing a fuel oil refinery device according to the present invention, Figure 2 is a cross-sectional view showing a chlorine removal device included in the fuel oil refinery device according to the present invention, Figures 3 and 4 according to the present invention A detailed view of a water-oil separator, FIG. 5 is a schematic view showing another type of fuel oil refinery device according to the present invention, and FIG. 6 is a view of another type of chlorine removal device included in the fuel oil refinery device according to the present invention. It is sectional drawing.

The fuel oil refinery device according to the present invention is connected to the fuel oil refinery device to remove the chlorine element containing elements contained in the fuel oil recycled from the waste plastic recovered in the distillation column as shown in FIG. It features.

That is, the present invention combines a chlorine removal device for removing a compound containing chlorine with a fuel oil refinery device.

The chlorine removal apparatus of the present invention is shown in detail as shown in FIG. 1, which will be described in detail below.

As shown in FIG. 1, the recycled fuel oil recovered by the distillation column by pyrolyzing the waste plastic is introduced into the chlorine removal device 100, or the recycled fuel oil recovered by the distillation tower is bag filter device 90. Fuel oil from which large particles have been removed is introduced into the chlorine removal unit. The fuel oil may be introduced immediately after pyrolysis as described above, or may be introduced after removing solid impurities from the bag filter device 90 or the like, and, if necessary, passed through a bag filter, a cartridge filter and / or an activated carbon filter. Regenerated fuel oil may be introduced into the chlorine removal apparatus 100.

Chlorine removal device 100 of the present invention is composed of a chemical purification device 60 and a water-oil separator (70).

Another chlorine removal device 100 of the present invention is composed of a chemical purification device 60, a water-oil separator 70 and a water-oil mixer 80 formed on the chemical purification device 60.

The present invention according to FIG. 1 is a fuel oil and chemical purifier 60 in which particulate matter is removed by a bag filter device 90 for removing large particles contained in fuel oil recovered after pyrolysis of waste plastic. The basic aqueous solution introduced into the C) is continuously removed by stirring with the agitator 62 of the chemical refining device 60. The refined fuel oil in the chemical refining device 60 is introduced into the water-oil separator 70 to phase-separate the fuel oil and the aqueous solution to recover the fuel oil, thereby obtaining a fuel oil from which chlorine has been removed. Proceed to finally use as a regeneration fuel oil.

The chemical refining apparatus 60 includes a mixing tank 61 in which a lower fuel oil and a basic aqueous solution are accommodated, an agitator 62 built in the mixing tank 61, and a lower level accommodated in the mixing tank 61. It comprises a basic aqueous solution pump 63 for supplying the fuel oil and the basic aqueous solution and the basic aqueous solution supplied from the basic aqueous solution tank 66 to the chemical purification device (60).

The chemical purification apparatus 60 of the present invention introduces the fuel oil mixture introduced from the water-oil mixer 80 and the basic aqueous solution introduced into the chemical purification apparatus 60 together from the upper end as shown in FIG. By contacting the fuel oil containing an acid component such as hydrochloric acid with the basic aqueous solution to react the chlorine compound to dissolve in water to remove the chlorine component such as hydrochloric acid in the fuel oil. At this time, the chemical purification device 60, the mixing tank 61, the lower fuel oil and basic aqueous solution is accommodated, the agitator 62 built in the mixing tank 61 and the mixing tank 61 The lower fuel oil and basic aqueous solution contained therein and a basic aqueous solution supplied from the basic aqueous tank are together included in the basic aqueous solution pump 63 so as to be supplied to the water-oil mixer 80. Mixing efficiency by sucking the lower fuel oil and basic aqueous solution contained in the mixing tank 61 by the basic aqueous pump 63 so that the basic aqueous solution supplied from the basic aqueous tank is supplied to the water-oil mixer 80 together. By increasing the chlorine removal efficiency can be increased. 5 shows a case where the chemical refining device 60 of the present invention is not provided with a water-oil mixer 80.

As shown in FIG. 3, the water-oil separator 70 of the present invention is installed at one end of the tank main body 70a and the tank main body 70a to allow the mixture of the fuel oil and the basic aqueous solution to be introduced. It is formed in the portion 71 and the inlet portion 71 in the tank body 70a, and the mixed liquid of the introduced fuel oil and the basic aqueous solution is temporarily accommodated to stabilize and remove the fine particles contained in the mixed liquid. The first space portion 72 and the mixed liquid from which the fine particles are removed from the first space portion 72 are accommodated, and the second space portion 73 adjacent to the first space portion 72 and the tank body. 70a installed inside the compartment and partitions the first space portion 72 and the second space portion 73, and the mixed liquid from which the fine particles are removed from the first space portion 72 is overflowed to form the second space. Partition (74) to be accommodated in the portion 73, and installed inside the tank body (70a) The first partition wall 75 provided with an upper portion of the first filter 75a through which the mixed liquid in which the fine particles are received and flown into the second space portion 73 is removed, and the fuel oil in which the water is removed is passed therethrough, and the tank A third space portion 76 installed inside the main body 70a and receiving fuel oil passed from the second space portion 73 by the first filter 75a and adjacent to the second space portion 73; It is provided at the other end of the tank body (70a) is composed of a discharge portion 77 for discharging the fuel oil passing through the first filter (75a).

The first space portion 72 is a mixture of the fuel oil and the basic aqueous solution is introduced to be temporarily accommodated and stabilized to remove the fine particles contained in the mixture. At this time, a partition 74 is installed between the first space portion 72 and the second space portion 73.

The partition 74 is installed inside the tank body 70a to partition the first space portion 72 and the second space portion 73, to suppress turbulent flow and to separate the layers so that water and It facilitates oil separation and removal of fine particles, and serves to allow the mixed liquid from which the fine particles are removed from the first space portion 72 to be received by the second space portion 73. The partition 74 is provided with a first partition 74a and a second partition 74b.

The first partition 74a is installed downward from the upper end of the inside of the tank body 70a, but the lower end of the first partition 74a is installed lower than the inlet portion 71, and the second partition 74b is provided. ) Is installed from the lower end of the tank body (70b) toward the top. At this time, the upper end of the second partition (74b) is preferably installed higher than the first partition (74a). The first and second partitions 74a and 74b stabilize the turbulent fuel oil and the basic aqueous solution flowing into the first space portion 72 from the chemical purification device 60, and the basic aqueous solution and the fuel oil. It serves to facilitate the separation and separation of the fine particles. In addition, the mixed liquid introduced from the inlet 71 by the partition is stabilized without being immediately moved to the second space 73, while phase separation and microparticles are removed to overflow the second space 73. Can be moved.

The fuel oil and the basic aqueous solution introduced into the first space portion 72 from the chemical purification device 60 are stabilized by the partition 74 while the fuel oil rises and the aqueous solution descends to be phase separated, and the first space portion ( When the water level of 72 reaches a certain level and reaches a level higher than the height of the second partition 74b, the fuel oil flows over the second partition 74b to move to the second space portion 73. do.

The fuel oil separated into the upper portion of the first space portion 72 and separated into phases flows into the second space portion 73 when it is higher than the height of the second partition 74b. Separately, the aqueous solution is settled to the bottom and the fuel oil is raised to the top.

The mixed liquid in which the fine particles received and flowed into the second space portion 73 is removed, is filtered by the first filter 75a through which the fuel oil from which the water is removed passes and moves to the third space portion 76. Will be. The first filter 75a is installed above the first partition wall 75.

The fuel oil moved to the third space portion 76 is discharged to the discharge portion 77 and the discharged fuel oil is injected into the first refining tank 10. The fuel oil introduced into the first refining tank 10 is refined through the second refining tank 20, the third refining tank 30, and the fourth refining tank 40, and finally the refining fuel oil is stored in the storage tank 50. ) Will be stored.

Lower portions of the first space portion 72, the second space portion 73, and the third space portion 76 are provided with a discharge port 78a and a discharge valve 78b for discharging water, respectively. Preferred is 78c).

1, 2, 4, 5, and 6, the first filter 75a provided between the first partition wall 75 and the discharge part 77 and provided in the first partition wall 75 is provided. The second partition wall 79b having a second filter 79a provided thereon to pass the fuel oil passing through and filtering the fine particles contained in the fuel oil and a small amount of water to allow the filtered fuel oil to pass therethrough, and the second filter It is preferable that the fuel oil passed by 79a is further accommodated and further provided with a fourth space portion 79c adjacent to the third space portion 76.

In addition, the fuel oil refinery device having the high efficiency chlorine removal device of the present invention may further include a water-oil mixer 80 on top of the chemical refining device 60.

The water-oil mixer 80 introduces a fuel oil and a basic aqueous solution from which the chlorine compound produced by decomposing waste plastic is not removed from the top, and an agitator 81 is provided therein, so that the water-oil mixer 80 is provided. Fuel oil and basic aqueous solution are mixed in contact with each other. The mixed liquid mixture is introduced into the chemical refining device 60 and secondaryly mixed by the stirrer 62 provided in the chemical refining device 60, and the chlorine is removed through the discharge tube 64 of the water-oil mixer. Will drain the oil. As such, the present invention allows the primary and secondary mixing by the water-oil mixer 80 and the chemical purification device 60 to contact the basic aqueous solution more effectively, thereby improving the removal efficiency of chlorine present in the form of a compound such as hydrochloric acid. It can increase.

The water-oil mixture enters the inlet of the chemical refining device 60 and is mixed by the stirrer 62 inside the chemical refining device, and the chlorine component such as chlorine and HCl of the organic chlorine compound in the fuel oil by water-oil contact. It is removed by reaction with aqueous NaOH solution and extracted with water layer. At this time, the reaction rate can be adjusted so that the reaction can be made smoothly, NaOH concentration, temperature.

Subsequently, as described above, the water-oil mixture, which is a reaction mixture sufficiently mixed in the chemical purifier 60 and reacted with the fuel oil and the NaOH aqueous solution, is introduced into the water-oil separator 70 to form a basic aqueous solution layer and Phase separation is performed to the fuel oil layer from which chlorine is removed, and only the upper fuel oil is supplied to the first purification tank 10 of the conventional fuel oil refinery device.

1 is a schematic view showing a fuel oil refinery device according to the present invention.

Figure 2 is a sectional view showing a chlorine removal device included in the fuel oil refinery device according to the present invention.

3 and 4 are detailed views of the water-oil separator according to the present invention.

5 is a schematic view showing another type of fuel oil refinery device according to the present invention.

Figure 6 is a cross-sectional view showing another type of chlorine removal device included in the fuel oil refinery device according to the present invention.

<Explanation of symbols for the main parts of the drawings>

100: fuel oil refinery device 200: chlorine removal device

10: first refining tank 20: second refining tank

30: third refining tank 40: fourth refining tank

50: storage tank 60: chemical purification device

61: mixing tank 62: agitator

63: basic aqueous pump 64a: discharge hole

64: discharge tube 65: mixed liquid pump

70 water-oil separator 70a tank body

71: inlet portion 72: first space portion

73: second space portion 74: partition

74a: first partition 74b: second partition

75a: first filter 75: first partition wall

76: third space portion 77: discharge portion

78a: outlet 78b: discharge valve

78c: drain pipe 79a: second filter

79b: second partition 79c: fourth space portion

73a, 76a: level check tube 80: water-oil mixer

81: stirrer 90: bag filter device

Claims (7)

A chemical refining device 60 for contacting and mixing the lower fuel oil and the basic aqueous solution produced by pyrolyzing the waste plastic with agitation, and a mixture of the fuel oil and the basic aqueous solution treated by the chemical refining device 60 are accommodated therein. In the fuel oil refinery device having a high-efficiency chlorine removal device comprising a water-oil separator (70) for separating the liquid mixture and water by allowing the mixed liquid to be phase separated, The water-oil separator 70, The tank body 70a, An inlet portion 71 installed at one end of the tank body 70a and into which a mixture of the fuel oil and the basic aqueous solution flows; A first space part formed at a portion of the inlet part 71 inside the tank body 70a to temporarily receive and stabilize a mixed solution of the introduced fuel oil and a basic aqueous solution and remove fine particles contained in the mixed solution ( 72), A second space portion 73 accommodated with the mixed liquid from which the fine particles are removed from the first space portion 72 and adjacent to the first space portion 72; It is installed inside the tank body 70a to partition the first space portion 72 and the second space portion 73, to suppress turbulent flow, and to separate the layers of water and oil separation and fine particles A partition 74 to facilitate removal and allow the mixed liquid from which the fine particles are removed from the first space portion 72 to be received by the second space portion 73; The first filter (75a) is installed in the tank body (70a) and the first liquid (75a) is passed through the second space portion 73, the mixed liquid to remove the fine particles are received and the fuel oil from which water is passed through the upper portion of the tank body (70a). The first partition wall 75 is provided, The third space portion 76 is installed inside the tank body 70a and accommodates fuel oil passed by the first filter 75a from the second space portion 73 and is adjacent to the second space portion 73. ); A discharge part 77 installed at the other end of the tank body 70a to discharge fuel oil passing through the first filter 75a; Fuel oil refinery device having a high efficiency chlorine removal device comprising a. According to claim 1, wherein the chemical purification device 60, A mixing tank 61 containing lower fuel oil and basic aqueous solution, An agitator 62 built in the mixing tank 61; And a basic aqueous solution pump 63 for supplying the lower fuel oil and basic aqueous solution contained in the mixing tank 61 and the basic aqueous solution supplied from the basic aqueous solution tank to the chemical purification apparatus 60 together. Fuel oil refinery with high efficiency chlorine removal device. The method of claim 2, In order to uniformly mix the mixture of the lower fuel oil and the basic aqueous solution in the mixing tank 61 is provided in the mixing tank 61 from the top to the bottom and the discharge tube formed with a plurality of discharge holes (64a) at predetermined intervals 64, Mixing liquid pump 65 for supplying the mixed liquid of the lower fuel oil and basic aqueous solution discharged from the discharge tube 64 to the chemical refining device 60 or the water-oil separator 70 is characterized in that it is further provided A fuel oil refinery device having a high efficiency chlorine removal device. According to any one of claims 1 to 3, wherein the partition 74, A first partition 74a installed downward from an upper end of the inside of the tank body 70a and having a lower end lower than the inlet 71; A fuel having a high-efficiency chlorine removal device, characterized in that it comprises a second partition (74b) which is installed from the lower end of the tank body (70b) toward the top and installed higher than the lower end of the first partition (74a). Oil refinery. The method according to any one of claims 1 to 3, A discharge port 78a and a discharge valve 78b are disposed at the lower portion of the first space portion 72, the second space portion 73, and the third space portion 76 to discharge water to the outside of the tank body 70a. ) Are each provided with a high efficiency chlorine removal device, characterized in that joined to one drain pipe (78c). The method according to any one of claims 1 to 3, The fuel oil which is installed between the first partition wall 75 and the discharge unit 77 inside the tank body 70a and passes through the first filter 75a provided in the first partition wall 75 is in contact with the fuel oil. A second partition wall 79b having a second filter 79a provided thereon to filter the fine particles and a small amount of water so as to pass the filtered fuel oil; The fuel oil refiner provided with the high efficiency chlorine removal device is characterized in that the fuel oil passed by the second filter (79a) is accommodated and further comprises a fourth space portion (79c) adjacent to the third space portion (76). Device. The method according to any one of claims 1 to 3, Checking the level of the fuel oil connected to the second space portion 73 and the third space portion 76 on the outside of the second space portion 73 and the outside of the third space portion 76, respectively. Fuel oil purification device having a high efficiency chlorine removal device, characterized in that the water level check tube (73a, 76a) is provided for each.

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