KR100907049B1 - Manufacturing method of granular carbon block filter - Google Patents

Abstract

A manufacturing method of a high performance granular carbon block filter is provided to improve quality of tap water, and to offer excellent purification function in a region having low pressure. A manufacturing method of a high performance granular carbon block filter includes the following steps of: mixing a raw material formed with granular activated carbon, a first granular PE binder and a second granular PE binder; molding a mixed raw material(6) by using a compression press(7) while pressing the mixed raw material; processing a mold in an electric furnace; cooling and separating the granular carbon block filter after cooling a heated mold and using a jig; and cutting and packing a granular carbon block.

Description

Manufacturing method of high performance granular carbon block filter {Manufacturing method of granular carbon block filter}

The present invention relates to a method for producing a granular carbon block filter mounted on a water purifier to filter out various impurities such as iron, rust, and organic matter contained in tap water, and in particular, the granular activated carbon and granular PE binder are used to provide excellent water flow rate and filtering power. It is an invention belonging to the technical field which manufactures a particulate carbon block filter by compression molding.

In general, a filter installed in a water purifier has a function of filtering out various impurities such as iron, rust, and organic matter contained in tap water, sterilizing bacteria, and inactivating viruses.

Various kinds of such filters have been proposed, and in particular, the carbon block filter embeds the carbon block in the filter container so that water can be purified while passing through the carbon block.

In the conventional method of manufacturing the carbon block filter, the amount of water flow and the water purification performance are remarkably deteriorated as the filter is manufactured in a very limited form using a powder activated carbon and a general PE binder as a main raw material by a compression press method or an extrusion method. It is true.

Furthermore, in order to improve the water purification performance of the carbon block filter, the carbon block filter should be made larger than necessary to increase the volume of the carbon block filter itself, resulting in inconvenience in handling and unreasonable problem of increasing the volume of the whole water purifier. .

In order to solve such a problem, a "patent method for producing a high performance carbon block filter, registered in Korean Patent No. 785686", which has been filed and patented by the applicant of the present invention, has been proposed.

The pre-registered invention provides a useful effect of prolonging the life of the filter, as well as significantly improving the water purification performance by producing a high-performance carbon block filter by a compression press operation.

However, in the pre-registered invention, a carbon block filter is manufactured using powder activated carbon and a polymer PE binder having a fine particle size as a main raw material. Improvements are required.

The present invention is to actively solve all the problems in the conventional carbon block filter, and the granular activated carbon and the special polymer granular PE binder as the main raw material to compress the granular carbon block filter having a high water flow rate and high filtering power. It is to be an object of the invention.

According to the present invention, the granular activated carbon, the first granular PE binder and the second granular PE binder are mixed evenly as a means for actively solving the above problems, and the compressed raw material is filled in a mold and then compressed. The present invention seeks to compress the granular carbon block filter while pressurizing, and to take out the granular carbon block filter from the mold after the entire heat treatment of the mold and the cooling process.

According to the present invention, after evenly mixing the granular activated carbon and the special polymer granular PE binder, the mixed raw material can be manufactured as a granular carbon block filter having excellent water flow rate and excellent filtering power through a compression press operation.

Therefore, it provides the effect of exerting an excellent water purification function even in areas where the quality of tap water and water pipes are old or low in water pressure.

It will be described with respect to the preferred embodiment for implementing the solution of the problem to be solved by the present invention in more detail.

Firstly, the present invention breaks through the conventional method of manufacturing a carbon block filter using powder activated carbon and PE powder binder, and the amount of water flowing through the filter can be smoothly purified even in the case of tap water having low water pressure or poor water quality. It is a characteristic gist of the invention to produce this rich particulate carbon block filter.

 A method of manufacturing a particulate carbon block filter according to the present invention for achieving the above-described characteristic gist will be described in detail for each process.

1) Raw material mixing process

 In the present invention, two types of first granular PE binders and second granular PE binders having different tensile stresses, particle sizes, and densities are added to granular activated carbon, which is a raw material of the granular carbon block filter, and added to an industrial mixer. After the mixture is mixed evenly for 30 minutes at 460 RPM to prepare a mixed raw material for forming a granular carbon block filter.

Meanwhile, the granular activated carbon used in the present invention is a granular activated carbon which removes chlorine and odors in water, removes volatile organic compounds and some heavy metals, and improves water taste, and is commercially available having the characteristics as shown in Table 1 below. Shin Kwang Co. (Shin Kwang Co., Ltd.) is used.

TABLE 1

Granular Activated Carbon Mesh Size (Μm) Bulk Density g / cc Iodine Adsorption mg / g  Shingwang Activated Carbon  30-60  0.52 or less  Over 1050

In addition, the first granular PE binder and the second granular PE binder used in the present invention serve as an adhesive for forming a connection chain of granular activated carbon to form a filter in the form of a block during the heat treatment process. Commercially available products having the same characteristics as GUR X 155 (first granular PE binder) and GUR4022-6 (second granular PE binder) (product of Ticona Engineering) are used.

TABLE 2

UHMW PE (Ticona) Ultra high molecular polyethylene Elongational Stress (Tensile stress) Particle Size (Particle size) Bulk density (density)  GUR X 155  0.25 Mpa  585㎛  0.46 g / cm 3  GUR 4022-6  -0.3 ~ 0.5 Mpa  340㎛  0.45 g / cm 3

Hereinafter, various embodiments of the present invention are used to produce the mixed raw material of the present invention for producing a granular carbon block filter having a pore size of 10 to 30 μm by mixing the granular activated carbon, the first granular PE binder, and the second granular PE binder in an appropriate ratio. An example will be described.

① First Example

In the first embodiment of the present invention, the addition ratio of the first granular PE binder and the second granular PE binder, which are the subsidiary materials, to the granular activated carbon, which is the main raw material, is added and mixed evenly.

Here, when the first granular PE binder having a particle size of 585 μm and the second granular PE binder having a particle size of 340 μm are mixed at the same ratio, the pore length of the final granular carbon block filter is about 30 μm. The amount of water flow is very good.

② Second Example

In the second embodiment of the present invention, the addition ratio of the first granular PE binder and the second granular PE binder, which are the subsidiary materials, to the granular activated carbon, which is the main raw material, is added and mixed evenly.

The difference from the first embodiment here is that the proportion of the first granular PE binder having a particle size of 585 µm is decreased, whereas the proportion of the second granular PE binder having a particle size of 340 µm is increased. Due to the increase of the small second granular PE binder, the pore of the finally completed granular carbon block filter is reduced to form about 20 mu m.

Accordingly, by freely adjusting the pore size according to the ratio of the first granular PE binder and the second granular PE binder, it provides an effect of producing a granular carbon block filter having a different water flow rate.

③ Third Example

In a third embodiment of the present invention, the addition ratio of the first granular PE binder and the second granular PE binder, which are the subsidiary materials, to the granular activated carbon, which is the main raw material, is added and mixed evenly.

The difference from the second embodiment here is that the ratio of the first granular PE binder is further reduced, and the ratio of the second granular PE binder is further increased.

Therefore, the proportion of the second granular PE binder with smaller particle size is further increased to form about 10 μm while reducing the pores of the granular carbon block filter, which is finally completed, so that the water flow rate is lower than that of the second embodiment.

2) Filter Forming Process

The present invention forms a cylindrical particulate carbon block filter 1 as shown in FIG. 1 using a mixed raw material produced by uniformly mixing the granular activated carbon, the first granular PE binder and the second granular PE binder.

In this filter forming step, an inner core 4 is inserted into the aluminum mold 3 having the upper and lower portions open so as to form the water passage 2 of the granular carbon block filter 1.

Accordingly, the core 4 is located at the center of the inside of the mold 3 in a state in which the sealing plate 5 formed at the lower end seals the lower portion of the mold 3.

After the installation of the core 4 is completed, the mixed raw material 6 is placed in a container and the amount of the mixed raw material 6 is filled into the mold 3 after confirming the quantification using a precision electronic balance.

Then, when the press 7 is operated, the presser 8 installed in the press 7 moves downward and is introduced into the mold 3 to press the mixed raw material 6 to press the cylindrical granular carbon block filter 1. It can be molded.

3) Heat treatment process

The present invention is characterized in that the entire heat treatment is performed by putting the entire mold 3 into the heat treatment furnace without separating the granular carbon block filter 1 formed from the mold 3 in the heat treatment.

This is to maintain the shape of the granular carbon block filter 1 as the mold (3) even in the high temperature heat treatment process so that the appearance of the product is excellent while having excellent compressibility and rigidity.

This heat treatment is performed under a temperature condition of 200 ° C. in an electric furnace of a size capable of simultaneously heating hundreds of filters.

The heat treatment process is a carbon block filter prepared by the conventional extrusion method instantaneously melt the polymer PE to heat the coating of the surface of the carbon block to solve the problem that the filtering power is lowered to provide an effect of further improving the filtering power.

4) Cooling and Separation Process

After the heat treatment process is completed, each mold is withdrawn to the outside and the heated mold is cooled using cold air.

When the mold 3 and the inner core 4 are separated and drawn out using a separate jig, a cylindrical granular carbon block filter 1 having a very high water flow rate and excellent filtering power can be manufactured as compared with the conventional carbon block filter. It becomes possible.

5) Cutting and Packing Process

The granular carbon block filter manufactured as described above is finally cut to a standard using a cutter and then produced through a packaging.

1 is a perspective view of a granular carbon block filter to which the present invention is applied

Figure 2 is a longitudinal cross-sectional view of the state in which the core is inserted into the mold of the present invention.

3 is a longitudinal sectional view of a state in which a granular carbon block filter is formed by operating a press after adding a mixed raw material to a mold of the present invention;

[Explanation of symbols on the main parts of the drawings]

1: granular carbon block filter 3: mold

4: core 8: fraser

Claims (5)

A raw material mixing step of uniformly mixing the raw materials composed of the granular activated carbon, the first granular PE binder and the second granular PE binder; A filter forming step of filling the mixed raw material into a mold into which an inner core is inserted and then compressing the mixed raw material into a cylindrical granular carbon block filter while pressing the mixed raw material by operating a compression press; A heat treatment step of heat-treating the entire mold in which the granular carbon block filter is formed in an electric furnace; A cooling and separating process of cooling the heat-treated mold and separating the mold and the inner core using a jig to draw out the granular carbon block filter to the outside; It comprises a cutting and packaging process for producing the finished product through the packaging after cutting the granular carbon block to the standard; The granular activated carbon has a mesh size of 30 to 60 µm, a density of 0.52 g / cc or less, and an iodine adsorption force of 1050 mg / g or more; The first granular PE binder has a tensile stress of 0.25 Mpa, a particle size of 585 µm, and a density of 0.46 g / cm 3; The second granular PE binder has a tensile stress of -0.3 to 0.5 Mpa, a particle size of 340㎛, density of 0.45g / ㎠ characterized in that the manufacturing method of high-performance particulate carbon block filter. The method of claim 1, A method of producing a high performance particulate carbon block filter, wherein the mixed raw material is added and mixed with the granular activated carbon such that the ratio of the first granular PE binder and the second granular PE binder is 10: 3 to weight. The method of claim 1, The method of producing a high-performance particulate carbon block filter, characterized in that the mixed raw material is added and mixed so that the addition ratio of the first granular PE binder and the second granular PE binder is 10: 2: 4 by weight with respect to the granular activated carbon. The method of claim 1, The method of producing a high-performance particulate carbon block filter, characterized in that the mixed raw material is added and mixed so that the addition ratio of the first granular PE binder and the second granular PE binder is 10: 1: 5 to the weight of the granular activated carbon. delete

Images