JP2018187610A - Immobilization neutralizer, neutralization treatment device, and method for manufacturing them - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an immobilization neutralizer which can further improve neutralization efficiency and further prevents clogging while taking advantage of the immobilization neutralizer that can suppress outflow of a small granular neutralizer to the outside and suppress occurrence of clogging even when using the small granular neutralizer and a method for producing the same, and a neutralization treatment device using the immobilization neutralizer and a method for manufacturing the same.SOLUTION: In an immobilization neutralizer, a plurality of granular neutralizers are bonded at points via a granular resin.SELECTED DRAWING: Figure 1

Description

  The present invention relates to an immobilized neutralizing agent, a neutralization processor, and a method for producing them.

Generally, a latent heat recovery type heat exchanger such as a latent heat recovery type hot water supply device neutralizes an acidic liquid (drain water) generated by combustion of fuel gas containing nitrogen oxide (NO _x ) or sulfur oxide (SO _x ). A neutralizer for processing is provided.

  The neutralizer generally has an inlet for an untreated liquid (for example, an acidic liquid), a treatment tank containing a neutralizing agent for neutralizing the untreated liquid flowing from the inlet, and this treatment. It is comprised from the container provided with the discharge port which discharges | emits the processed liquid which flows out from a tank outside. In such a neutralizer, it is required to increase the consumption efficiency of the neutralizer by using up the neutralizer accommodated in the treatment tank without waste, and to reduce the size of the entire processor. .

  For example, Patent Document 1 discloses a treatment tank in which a neutralizing agent is contained, an untreated liquid flows from the upper part, and a treated liquid neutralized by the neutralizing agent flows from the lower part, and the treated liquid It has been proposed to reduce the size of the entire neutralization processor by combining the treated tank flowing in from the lower part and flowing out from the upper part and making the volume of the treated tank equal to or greater than the volume of the treated tank. .

Japanese Patent Laying-Open No. 2005-066965

  As described in Patent Document 1, in the design of the conventional neutralization processor, from the viewpoint of suppressing the outflow of the neutralizing agent from the treatment tank and preventing clogging of the treated liquid discharge channel. The treatment tank is separated from the treated tank by a partition having a large number of small holes. And from a viewpoint of making such a partition function effectively, it is necessary to make the magnitude | size of the neutralizing agent to be used more than fixed. However, the larger the neutralizing agent, the larger the gap between the neutralizing agents. As a result, the amount of the neutralizing agent per unit volume that can be accommodated in the treatment tank is limited. The limit of the amount of neutralizing agent that can be accommodated in the treatment tank is directly related to the limit of the neutralization capacity per volume of the treatment tank. For this reason, it is difficult to further reduce the size of the neutralization treatment apparatus designed by the conventional method while achieving a neutralization ability of a certain level or more.

  On the other hand, the present inventors integrally bonded the granular neutralizing agent through a binder to form an immobilized neutralizing agent, so that even when a smaller granular neutralizing agent is used, the granular neutralizing agent is used. Outflow of neutralizing agent to the outside can be suppressed, clogging can be suppressed, and the amount of neutralizing agent that can be accommodated in the treatment tank can be increased. It was found that it can be realized. Moreover, in this method, since the specific surface area is improved as the particle size of the granular neutralizing agent is reduced, it is possible to further improve the neutralization efficiency.

  However, in such an immobilized neutralizing agent, the surface of the granular neutralizing agent is covered instead by using a binder, and the contact surface between the untreated liquid and the granular neutralizing agent is reduced. The inventors have newly found that there is a possibility. The reduction of the contact surface between the untreated liquid and the granular neutralizer leads to the result that the neutralization ability of the neutralizer as a whole is not fully exhibited. Thus, the above problem is a problem specific to the case where an immobilized neutralizing agent is used, and can be said to be an important problem from the viewpoint of further improving the neutralization efficiency of the immobilized neutralizing agent.

  Further, in the conventional immobilized neutralizing agent, another problem that the untreated liquid becomes difficult to flow between the granular neutralizing agents due to the excess binder filling the gaps between the granular neutralizing agents may occur. I also found that there is a sex. The deterioration of the liquid permeability of the untreated liquid may cause clogging inside the processing tank, in addition to the clogging problem outside the processing tank. The clogging in the treatment tank is a problem that should be avoided from the viewpoint of safety because it leads to the overflow of the untreated liquid in the treatment tank. Thus, the above-mentioned another problem is also a problem peculiar when the immobilized neutralizing agent is used.

  The present invention has been made in view of the above problems, and even when a small granular neutralizing agent is used, the outflow of the granular neutralizing agent to the outside can be suppressed, and the occurrence of clogging can be suppressed. While utilizing the advantage of using an immobilized neutralizing agent that can be performed, it is possible to further improve the neutralization efficiency, the immobilized neutralizing agent that is less prone to clogging, and a method for producing the same, and It aims at providing the neutralization processing device using the said fixed neutralizing agent, and its manufacturing method.

  As a result of intensive research to solve the above problems, the present inventors have achieved the fixation of the granular neutralizer, while minimizing the coating area of the surface of the granular neutralizer by the binder, The inventors have found that the above problems can be solved by using a granular resin as a binder, and have completed the present invention.

  That is, the immobilized neutralizing agent of the present invention is obtained by point-bonding a plurality of granular neutralizing agents through a granular resin.

  It becomes possible to suppress that surfaces other than the adhesion point in a granular neutralizer are covered with resin by carrying out point adhesion of several granular neutralizers via granular resin like this structure. As a result, the area where the surface of the granular neutralizing agent is covered with the binder can be minimized, and the contact area between the untreated liquid and the granular neutralizing agent can be maximized. As a result, the neutralization efficiency can be further improved. Moreover, it becomes possible by using granular resin to also avoid that the space | gap between granular neutralizing agents is filled with resin. Thereby, the liquid permeability of the untreated liquid between granular neutralizing agents improves more. By improving the liquid permeability of the untreated liquid, clogging in the treatment tank is suppressed, and safety can be ensured. Moreover, the improvement of the liquid permeability of the untreated liquid can contribute to the further improvement of the neutralization efficiency.

  The granular resin used in the present invention is preferably a thermoplastic resin or a thermosetting resin. Among these, polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer are used. And at least one selected from the group consisting of ethylene-methyl methacrylate copolymers.

  By using such a granular resin, the bond between the granular neutralizing agents that are point-bonded becomes stronger, and the resistance (toughness) to brittle fracture of the immobilized neutralizing agent tends to be further improved. The improvement in toughness of the immobilized neutralizing agent contributes to an improvement in handling when the immobilized neutralizing agent is put in the distribution process and an improvement in handling when the immobilized neutralizing agent is accommodated in the neutralizer. In addition, even when some external force is applied to the immobilized neutralizer stored in the neutralizer, the neutralized neutralizer becomes difficult to be destroyed, and the granular neutralizer is detached from the immobilized neutralizer and It is also possible to suppress a situation that causes clogging.

  Moreover, the average particle diameter of the granular resin used in the present invention is preferably 1 to 500 μm, more preferably 100 to 500 μm, and further preferably 180 to 500 μm.

  By setting the average particle diameter of the granular resin to be used to 1 μm or more, it is possible to further suppress the granular resin from entering the depressions on the surface of the granular neutralizer and causing a decrease in adhesiveness. In addition, by making the average particle size of the granular resin to be used 1 μm or more, the point adhesion area is further improved, so that the bonds between the granular neutralizers that are point-adhered become stronger, and the toughness of the immobilized neutralizing agent is further increased. It tends to improve. On the other hand, by setting the average particle size of the granular resin to be used to 500 μm or less, the granular resin can more effectively adhere to the surface of the granular neutralizer, and the toughness of the immobilized neutralizer tends to be further improved. It is in. Moreover, by making the average particle diameter of the granular resin to be used be 500 μm or less, it is possible to further suppress the surface other than the adhesion point in the granular neutralizing agent from being covered with the resin, and the contact area between the untreated liquid and the granular neutralizing agent Tend to improve more. As a result, the neutralization efficiency can be further improved. The average particle size of the granular resin is determined by eluting the granular neutralizing agent in the immobilized neutralizing agent with an acidic solution, and taking out only the granular resin, and using the obtained granular resin with a known measuring instrument. It can obtain by measuring.

  The method for determining the more appropriate particle diameter of the granular resin is not particularly limited, but for example, the granular resin is classified into several classes so as to have an average particle diameter in a predetermined range, and each obtained A method of immobilizing a granular neutralizing agent using a graded granular resin and comparing the degree of neutralization reaction of the immobilized neutralizing agent obtained using the graded granular resin can be mentioned. The “class” in the present specification refers to, for example, an on-mesh class (classification class) when classified by a sieve.

  Furthermore, the melt flow rate of the granular resin used in the present invention is preferably 50 g / 10 min or less, more preferably 1-50 g / 10 min, and further preferably 5-30 g / 10 min.

  By setting the melt flow rate at 190 ° C. of the granular resin to be used to 50 g / 10 min or less, it tends to be possible to further suppress the formation of a film on the surface of the granular neutralizer by melting the granular resin during heating. As a result, the neutralization efficiency can be further improved. On the other hand, by setting the melt flow rate at 190 ° C. of the granular resin to be used to 1 g / 10 min or more, the granular resin is appropriately melted during heating, and thus the toughness of the immobilized neutralizing agent tends to be further improved. The melt flow rate at 190 ° C. can be measured according to JIS K7210.

  Moreover, in this invention, the compounding quantity of granular resin becomes like this. Preferably it is 0.1-10 mass parts with respect to 100 mass parts of granular neutralizers, More preferably, it is 0.3-7 mass parts, Preferably it is 0.5-5 mass parts.

  When the blending amount of the granular resin is 0.1 parts by mass or more, the adhesion point in the granular neutralizing agent is improved, and thus the toughness of the immobilized neutralizing agent tends to be further improved. On the other hand, when the blending amount of the granular resin is 10 parts by mass or less, it is possible to suppress the surface other than the adhesion point in the granular neutralizing agent from being covered with the resin, and as a result, further neutralization. Efficiency can be improved.

  In the present invention, the granular resin preferably includes an antibacterial agent and / or an antifungal agent. Furthermore, the total content of the antibacterial agent and antifungal agent in this case is preferably 0.1 to 30 parts by mass, more preferably 1 to 25 parts by mass with respect to 100 parts by mass of the granular resin. More preferably, it is 5-20 mass parts.

  By using an antibacterial agent and / or an antifungal agent, for example, it is possible to suppress the growth of fungi and mold that can be propagated in an untreated liquid or a treated liquid (hereinafter referred to as “retaining water”) that stays in the retention portion. it can. Therefore, the production | generation of the biofilm and / or gel-like viscous substance in a neutralization processing device can be suppressed, and generation | occurrence | production of clogging can be suppressed. In addition, a neutralization treatment device having an antibacterial / antifungal function can be realized in a smaller size and at a lower cost than when an antibacterial / antifungal ion generator or the like is provided. In particular, inclusion of an antibacterial agent and / or antifungal agent in the granular resin facilitates release of the antibacterial agent and / or antifungal agent over time. When the total content of the antibacterial agent and the antifungal agent is 0.1 parts by mass or more, the antibacterial / antifungal effect during the use period of the neutralizer can be more effectively exhibited. On the other hand, when the total content of the antibacterial agent and the antifungal agent is 30 parts by mass or less, the amount of the granular resin relatively increases, and thus the toughness of the immobilized neutralizing agent tends to be further improved.

  In the present invention, the specific gravity of the granular resin in a state including the antibacterial agent and / or antifungal agent is preferably 1.0 or less, more preferably 0.8 or more and 1.0 or less, and still more preferably. 0.9 or more and less than 1.0.

  When the specific gravity of the granular resin in the state including the antibacterial agent and / or the antifungal agent is 1.0 or less, that is, the specific gravity of water or less, the free granular resin remaining after the granular neutralizing agent is consumed is a treatment tank. It can float to the interface between the water and air that stays inside. As a result, the antibacterial agent and / or antifungal agent contained in the granular resin floating at the gas-liquid interface of the treatment tank is effective at an early stage against bacteria and mold that can invade from the outside of the neutralizer. It becomes possible to demonstrate. In addition, by configuring the granular resin to gather at the gas-liquid interface of the processing tank, it is possible to further suppress the granular resin from being discharged from the discharge port of the neutralization processor and causing clogging downstream. .

  The method for producing an immobilized neutralizing agent according to the present invention is a method in which a granular resin is heated in the presence of a granular neutralizing agent and a granular resin, whereby a plurality of granular neutralizing agents are spot-bonded via the granular resin. Process.

  The granular resin can be melted or cured by preparing a mixture in which the granular neutralizing agent and the granular resin are mixed and heating the mixture. When a thermoplastic resin is used, the granular neutralizing agent is spot-bonded through the granular resin in the process where the molten granular resin is solidified. In addition, when a thermosetting resin is used, the granular neutralizing agent is spot-bonded through the cured granular resin. As described above, according to the present invention, an immobilized neutralizing agent can be obtained by a relatively simple method.

  The neutralization treatment device of the present invention has an inlet for an untreated liquid, a treatment tank for neutralizing the untreated liquid to form a treated liquid, and an outlet for the treated liquid. In which the above-mentioned immobilized neutralizing agent is accommodated.

  By having such a configuration, further neutralization efficiency can be achieved while taking advantage of the use of the immobilized neutralizing agent that can suppress the outflow of the granular neutralizing agent to the outside and suppress the occurrence of clogging. Thus, it is possible to provide a neutralizer that is less likely to cause clogging.

  The method for producing a neutralization treatment device of the present invention includes an inlet for an untreated liquid, a treatment tank that neutralizes the untreated liquid to form a treated liquid, and a neutralizer having a treated liquid discharge port. In the treatment tank of the processing unit, a storing step for storing the granular neutralizing agent and the granular resin, and a heating step for spot-bonding a plurality of granular neutralizing agents through the granular resin by heating the granular resin And having.

  Thus, by carrying out the above-described method for producing an immobilized neutralizing agent in a treatment tank, the number of steps for producing a neutralization treatment device is reduced as compared with the case where an immobilized neutralizing agent is produced in advance outside the treatment tank. Therefore, it is possible to manufacture a neutralizer having high functionality at a lower cost.

  According to the present invention, even when a small granular neutralizing agent is used, an immobilized neutralizing agent that can suppress the outflow of the granular neutralizing agent to the outside and suppress the occurrence of clogging. An immobilized neutralizing agent capable of further improving the neutralization efficiency while making use of the advantages used, a method for producing the same, and a neutralizer using the immobilized neutralizing agent and a method for producing the same Can be provided.

It is a schematic diagram which shows schematic structure of the fixed neutralization agent by this embodiment. It is a schematic diagram which shows the one aspect | mode of the resin particle in this embodiment. It is a schematic diagram which shows schematic structure of the neutralization processing apparatus by this embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings as necessary. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the scope of the present invention. is there. In the drawings, the same elements are denoted by the same reference numerals, and redundant description is omitted. Further, positional relationships such as up, down, left and right are based on the positional relationships shown in the drawings unless otherwise specified. Further, the dimensional ratios in the drawings are not limited to the illustrated ratios.

[Immobilized neutralizer]
The immobilized neutralizing agent of this embodiment is obtained by point-bonding a plurality of granular neutralizing agents via a granular resin. FIG. 1 is a schematic diagram showing a schematic configuration of an immobilized neutralizing agent according to the present embodiment. The fixed neutralizing agent 10 has two or more granular neutralizing agents 1 point-bonded via the granular resin 2, and the granular neutralizing agent 1 and the granular resin 2 are three-dimensionally crosslinked. Any shape can be constructed.

  The particulate neutralizing agent 1 is not particularly limited, and examples thereof include calcium carbonate, slaked lime, caustic soda, soda ash, quick lime, limestone, moss lime, and magnesium oxide. These granular neutralizing agents 1 can be used singly or in combination of two or more. Among these, calcium carbonate is usually used, and calcium carbonate may be used in the form of crushed stone of, for example, white limestone (for example, cold water stone).

  As these granular neutralizing agents 1, commercially available products classified for each predetermined particle size can also be used. The granular neutralizing agent 1 may be composed of only the granular neutralizing agent 1 classified into one class, but is preferably two or more types of granular neutralizing agents 1 classified into different classes. By comprising two or more types of granular neutralizing agents 1, it becomes possible to fill the gaps between the large granular neutralizing agents 1 with small granular neutralizing agents 1, and the bulk density and total surface area of the granular neutralizing agents 1 as a whole. The neutralization efficiency of the untreated liquid can be further improved.

  When using two or more types of granular neutralizing agents 1 classified into different classes, the average particle size of each granular neutralizing agent 1 and its blending ratio take into account the bulk density and total surface area of the immobilized neutralizing agent 10. Can be selected. The larger the bulk density of the immobilized neutralizing agent 10, the higher the density of the granular neutralizing agent 1 can be accommodated, and thus the size of the neutralizing device can be reduced. Further, as the total surface area of the immobilized neutralizing agent 10 is larger, the neutralization speed of the untreated liquid is improved, and the neutralization efficiency is further improved.

  The granular resin 2 is not particularly limited as long as the granular neutralizers 1 can be bonded to each other, and a thermoplastic resin and a thermosetting resin can be used. Although it does not restrict | limit especially as a thermoplastic resin, For example, vinyl ester resin (for example, polyvinyl acetate etc.), vinyl alcohol resin (for example, polyvinyl acetal resin, polyvinyl butyral resin, etc.), halogenated vinyl resin (for example, , Polyvinyl chloride, etc.), polyolefin resin, styrene resin (eg, polystyrene, styrene-acrylonitrile copolymer (AS resin), styrene-acrylonitrile-butadiene copolymer (ABS resin), etc.), polyamide resin (eg, , Aromatic polyamides, aliphatic polyamides, etc.), (meth) acrylic resins (eg, (poly (meth) acrylic acid esters, etc.), polycarbonate resins (eg, aromatic polycarbonates, aliphatic polycarbonates, etc.), polyacetal trees , Cellulose-based resins, modified silicone-based resins, etc. Among these, from the viewpoint of excellent water resistance and acid resistance, olefin-based resins are more preferable. Since the bond between the granular neutralizers 1 to be point-bonded becomes stronger, the toughness of the immobilized neutralizer 10 is further improved, and the water and acid resistance of the resulting neutralizer block is excellent. It is possible to improve the durability.

  Examples of polyolefin resins include olefin homopolymers such as polyethylene and polypropylene, copolymers of these olefins (for example, ethylene-propylene copolymers), and copolymers of these olefins and copolymerizable monomers. (For example, ethylene-vinyl acetate copolymer (EVA resin), ethylene-ethyl acrylate copolymer, and ethylene-methyl methacrylate copolymer). Among these, it is more preferable to include at least one selected from the group consisting of polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, and ethylene-methyl methacrylate copolymer. Polyolefin resin can be used individually by 1 type or in combination of 2 or more types.

  In addition, the thermosetting resin is not particularly limited, and examples thereof include thermosetting resins such as epoxy resins and urethane resins.

  These granular resins 2 can be used singly or in combination of two or more.

  The average particle diameter of the granular resin 2 can be more avoided from the granular resin 2 entering the depressions on the surface of the granular neutralizing agent 1 and causing a decrease in adhesiveness, and from the viewpoint of improving the toughness of the immobilized neutralizing agent 10. The lower limit can be determined from the viewpoint of increasing the bonding area. Moreover, the upper limit can be defined from a viewpoint which avoids that surfaces other than the adhesion point in the granular neutralizer 1 are covered with resin more than necessary. From such a viewpoint, the average particle diameter of the granular resin 2 is preferably 1 to 500 μm, more preferably 100 to 500 μm, and further preferably 180 to 500 μm.

  From the viewpoint of adjusting the molten state of the granular resin 2 at the time of heating in the method for producing the immobilized neutralizing agent 10 described later, the melt flow rate of the granular resin 2 is preferably 50 g / 10 min or less, more preferably 1 to 1. 50 g / 10 min, more preferably 5-30 g / 10 min.

  Moreover, the melting point of the granular resin 2 is 100 to 200 ° C., more preferably 100 to 150 ° C., from the viewpoint of adjusting the molten state of the granular resin 2 during heating in the method for producing the immobilized neutralizing agent 10 described later. It is.

  The blending amount of the granular resin 2 can determine the upper and lower limits from the balance of toughness and neutralization efficiency of the immobilized neutralizing agent 10. From such a viewpoint, the compounding amount of the granular resin 2 is preferably 0.1 to 10 parts by mass, more preferably 0.3 to 7 parts by mass with respect to 100 parts by mass of the granular neutralizer. More preferably, it is 0.5-5 mass parts.

  In addition, as shown in FIG. 2, the granular resin 2 preferably includes an antibacterial agent and / or an antifungal agent 3. By including the antibacterial agent and / or antifungal agent 3, it is possible to effectively suppress the growth of fungi and mold in the container and to suppress the discharge of the treated liquid contaminated with the fungus and mold. Moreover, the production | generation of the biofilm and / or gel-like viscous substance in a neutralization processing device can be suppressed, and generation | occurrence | production of clogging can be suppressed. Furthermore, compared with the case of providing an antibacterial / antifungal ion generator or the like, a neutralization treatment device having an antibacterial / antifungal function can be realized in a small size and at low cost. In the present embodiment, an antibacterial agent and / or an antifungal agent 3 can be added separately from the granular resin 2.

  Antibacterial and antifungal agents are not particularly limited, but include, for example, metals such as silver, copper, and zinc, metal-supported zeolites, metals having photocatalytic activity, inorganic compounds such as metal oxides and metal compounds, and hinokitiol compounds. Natural organic compounds such as chitosan compounds, mustard extract compounds and eucalyptus compounds, synthetic organic compounds and organic composites. These compounds can be used alone or in combination of two or more. Among these, a synthetic organic compound is preferable from the viewpoint of effectively acting on both bacteria and fungi.

  Although it does not restrict | limit especially as a synthetic organic compound, For example, a nitrogen-containing heterocyclic compound, an aldehyde compound, a phenol compound, a biguanide compound, a nitrile compound, a halogen compound, an anilide compound, a disulfide compound, thio Carbamate compounds, organosilicon quaternary ammonium salt compounds, quaternary ammonium salt compounds, amino acid compounds, organometallic compounds, alcohol compounds, carboxylic acid compounds, ester compounds, thiazoline compounds, cationic polymers Can be mentioned. These synthetic organic compounds can be used singly or in combination of two or more.

  Since it is preferable that an antibacterial agent and an antifungal agent have an effect over the whole use period of a neutralization processing apparatus, what has a sustained release property is preferable.

  The total content of the antibacterial agent and the antifungal agent is preferably 0.1 to 30 parts by mass, more preferably 1 to 25 parts by mass, and further preferably 5 to 20 parts per 100 parts by mass of the granular resin. Part by mass. When the total content of the antibacterial agent and the antifungal agent is 0.1 parts by mass or more, the antibacterial / antifungal effect can be effectively maintained during the period of use of the neutralizer.

  In general, in a neutralizer having an inlet for an untreated liquid, a treatment tank for neutralizing the untreated liquid to form a treated liquid, and an outlet for the treated liquid, It is thought that and molds often flow together with the untreated liquid from the inlet. It is preferable to suppress the bacteria and fungi that have flowed in this way before the propagation proceeds. From such a viewpoint, the specific gravity of the granular resin 2 in a state including the antibacterial agent and / or the antifungal agent 3 is set to a specific gravity lighter than the water staying in the treatment tank, and remains after the granular neutralizer 1 is consumed. By allowing the free granular resin to float to the interface between the water and air staying in the treatment tank, it is possible to treat bacteria and mold that can enter from the outside of the neutralizer at the initial stage. Become. From such a viewpoint, the specific gravity of the granular resin 2 in a state including the antibacterial agent and / or antifungal agent 3 is preferably 1.0 or less, more preferably 0.8 or more and 1.0 or less, More preferably, it is 0.9 or more and less than 1.0.

[Method for producing immobilized neutralizing agent]
The immobilized neutralizing agent 10 of the present embodiment is configured such that a plurality of granular neutralizing agents 1 are pointed through the granular resin 2 by heating the granular resin in the presence of the granular neutralizing agent 1 and the granular resin 2. It has a heating step for bonding.

  The heating temperature is preferably 60 ° C. or higher and 200 ° C. or lower, more preferably 60 ° C. or higher and 150 ° C. or lower. When the heating temperature is 60 ° C. or higher, the granular resin 2 is easily melted or cured, and the bonding property between the granular resin 2 and the granular neutralizer 1 can be further enhanced. On the other hand, when the heating temperature is 200 ° C. or lower, it is not necessary to use a special heating device, and the heating process can be performed at a lower cost. In addition, by heating the granular neutralizing agent 1 and the granular resin 2 by this heating step, there is also an advantage that bacteria and mold that can inevitably adhere to the surface of the granular neutralizing agent 1 can be sterilized by heating. The heating time is not particularly limited, but is preferably 5 minutes to 2 hours, and more preferably 40 minutes to 60 minutes.

  The heating step may be performed after the granular neutralizer 1 and the granular resin 2 are accommodated in a predetermined container and mixed in the container, or the granular neutralizer 1 and the granular resin 2 are mixed in advance. It may be carried out in a container or without using a container. In addition, by using a container, the immobilized neutralizing agent 10 having a shape that matches the shape of the container can be obtained. In particular, by mass-producing the immobilized neutralizing agent 10 in advance using a container having the same shape as that of the treatment tank, a predetermined amount of the immobilized neutralizing agent 10 can be accommodated in a separately manufactured neutralization processor. It becomes easy. In addition, even when all the neutralizing agent in the neutralizer is consumed, it is possible to refill the immobilized neutralizing agent 10 that has been mass-produced in advance. As described above, the immobilized neutralizing agent 10 that can be handled as one part of the neutralizing device can also be referred to as a “neutralizing agent module”.

[Neutralizer]
The neutralization processor of the present embodiment has an untreated liquid inlet, a treatment tank that neutralizes the untreated liquid to form a treated liquid, and a treated liquid discharge port. The above-mentioned immobilized neutralizing agent is accommodated therein. Hereinafter, a specific apparatus configuration will be further described with reference to FIG.

  FIG. 3 is a schematic diagram showing a schematic configuration of the neutralization processor according to the present embodiment. The neutralizer 20 has an inlet 4 for the untreated liquid A, a treatment tank 5 that neutralizes the untreated liquid A to form a treated liquid B, and an outlet 6 for the treated liquid B. In the treatment tank 5, an immobilized neutralizing agent 10 in which the granular neutralizing agent 1 is integrated via the granular resin 2 is accommodated. Further, the neutralization processor 20 is provided with a flow path 7 that allows the treatment tank 5 and the discharge port 6 to communicate with each other.

  In the neutralization treatment device 20 configured in this way, for example, first, the untreated liquid A flows into the treatment tank 5 from the inlet 4 provided in the lid portion 9 of the neutralization treatment device 20, and the treatment tank 5 5 is brought into contact with the immobilized neutralizing agent 10 housed in 5. The untreated liquid A that has come into contact with the immobilized neutralizing agent 10 flows downward in the vertical direction in the treatment tank 5 according to gravity, and the neutralizer 20 is filled and stays up to the height of the installation position of the discharge port 6. When the retained untreated liquid A exceeds a certain amount that can be retained in the neutralization processor 20, the treated liquid B flows out from the discharge port 6 over the partition wall 8. The untreated liquid A is neutralized in the process of contacting the immobilized neutralizing agent 10 and the process of staying in the neutralizer 20 to become a treated liquid B. The “installation position of the discharge port 6” refers to the highest position in the vertical direction of the discharge pipe when the discharge pipe is provided as shown in FIG.

  The granular neutralizer 1 constituting the immobilized neutralizer 10 gradually decreases in the process of neutralizing the untreated liquid A. When the granular neutralizer 1 is consumed by the neutralization treatment of the untreated liquid A, the granular resin 2 to which the consumed granular neutralizer 1 is bound loses the scaffold and floats in the staying water. Can do.

  In addition, as above-mentioned, this invention is not limited to said embodiment and the modification already described, In the range which does not deviate from the summary, various deformation | transformation are possible. In other words, the above embodiment is merely an example in all respects, and is not construed in a limited manner. For example, the specific gravity of the granular resin 2 far exceeds 1, and may stay at the bottom of the neutralization processor 20, or the neutralization processor 20 may have a plurality of treatment tanks 5. Good. Moreover, you may use the granular resin which is not fix | immobilized in the neutralization processing device 20 as needed. Furthermore, the lid portion 9 may be configured to close so as to be freely opened and closed, or may be provided with a sensor for detecting an overflow. Moreover, the emergency discharge pipe which detects the abnormal signal by an overflow sensor and opens and closes may be provided in the bottom part of the neutralization processor 20. FIG.

[Production method of neutralizer]
The manufacturing method of the neutralization treatment device of the present embodiment is not particularly limited, and the immobilized neutralizing agent 10 immobilized in advance in the treatment tank may be accommodated, and then the non-immobilized neutralizing agent may be accommodated. Alternatively, the granular neutralizing agent 1 and the granular resin 2 may be accommodated in the treatment tank, the immobilized neutralizing agent 10 may be formed by heating or the like, and then the non-immobilized neutralizing agent may be accommodated.

  As the latter method, a neutralizer 20 having an inlet 4 for an untreated liquid, a treatment tank 5 for neutralizing the untreated liquid to obtain a treated liquid, and an outlet 6 for the treated liquid. In the processing tank 5, the granular neutralizing agent 1 and the granular resin 2 are accommodated, and the granular resin 2 is heated to heat the granular neutralizing agent 1 through the granular resin 2. And a method of manufacturing the neutralizer 20 having a heating step of bonding. By adopting such a method, the immobilized neutralizing agent 10 can be accommodated (filled) even in the treatment tank 5 having a complicated shape that is difficult to accommodate (fill) the previously formed immobilized neutralizing agent 10. it can.

  The heating temperature can be substantially the same as that described in the method for producing the immobilized neutralizing agent 10, but is preferably determined in consideration of the heat resistance of the members constituting the treatment tank 5. From such a viewpoint, the heating temperature is preferably 60 to 200 ° C, more preferably 60 to 150 ° C. In addition, a heating method will not be restrict | limited especially if the processing tank 5 can be heated in the state which accommodated the granular neutralizer 1 and the granular resin 2 in the processing tank 5. FIG.

  In addition, in the manufacturing method of this embodiment, a granular neutralizing agent and a binder may be mixed before accommodating in the processing tank 5, and may be mixed after accommodating.

  INDUSTRIAL APPLICABILITY The present invention is applied to a latent heat recovery type heat exchanger such as a latent heat recovery type hot water supply apparatus, and is industrially used as a neutralization processor that neutralizes untreated liquid generated in the latent heat recovery type heat exchanger and discharges it to the outside. Has availability.

DESCRIPTION OF SYMBOLS 1 ... Granular neutralizer, 2 ... Granular resin, 3 ... Antibacterial agent and / or antifungal agent, 4 ... Inlet, 5 ... Treatment tank, 6 ... Discharge port, 7 ... Channel, 8 ... Septum, 9 ... Cover Parts: 10 ... immobilized neutralizer, 20 ... neutralizer, A ... untreated liquid, B ... treated liquid

Claims (10)

A plurality of granular neutralizing agents are point-bonded via a granular resin,
Immobilized neutralizer. The granular resin contains at least one selected from the group consisting of polyethylene, polypropylene, ethylene-vinyl acetate copolymer, ethylene-ethyl acrylate copolymer, and ethylene-methyl methacrylate copolymer,
The immobilized neutralizing agent according to claim 1. The average particle diameter of the granular resin is 1 to 500 μm,
The immobilized neutralizing agent according to claim 1 or 2. The melt flow rate at 190 ° C. of the granular resin is 50 g / 10 min or less,
The immobilization neutralizing agent according to any one of claims 1 to 3. The amount of the granular resin is 0.1 to 10 parts by mass with respect to 100 parts by mass of the granular neutralizer,
The immobilized neutralizing agent according to any one of claims 1 to 4. The granular resin includes an antibacterial agent and / or an antifungal agent,
The total content of the antibacterial agent and the antifungal agent is 0.1 to 30 parts by mass with respect to 100 parts by mass of the granular resin,
The immobilized neutralizing agent according to any one of claims 1 to 5. The specific gravity of the granular resin in a state including the antibacterial agent and / or the antifungal agent is 1.0 or less,
The immobilized neutralizing agent according to claim 6. In the coexistence of a granular neutralizer and a granular resin, by heating the granular resin, it has a heating step of spot bonding a plurality of the granular neutralizer via the granular resin,
A method for producing an immobilized neutralizing agent. An inlet for untreated liquid;
A treatment tank that neutralizes the untreated liquid to form a treated liquid;
An outlet for the treated liquid,
In the treatment tank, the immobilized neutralizing agent according to claim 1 is accommodated.
Neutralizer. In the treatment tank of the neutralization treatment device having an untreated liquid inlet, a treatment tank that neutralizes the untreated liquid to form a treated liquid, and an outlet for the treated liquid, A housing step for housing the neutralizing agent and the granular resin;
A heating step of spot-bonding a plurality of the granular neutralizing agents via the granular resin by heating the granular resin,
A method for producing a neutralizer.

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