JPH01123612A - Regenerating cleaning filter for edible oil - Google Patents

Abstract

PURPOSE:To obtain the filter for regenerating edible oil by kneading the mixture of 10-90wt.% pulp and 90-10wt.% activated carbon and activated clay with water and carrying out forming and drying. CONSTITUTION:The filter is made in such a way that 90-10wt.% mixture consisting of 95-50wt.% activated carbon and 50-5wt.% activated clay is mixed with 10-90wt.% pulp and is added with water and kneaded and then pressed to form a plate shape. It may also be made in such a way that the upper layer consisting of activated clay and pulp and the lower layer consisting of activated carbon and pulp are laminated each other into a two layer body. In this case, the ratio of activated carbon and activated clay is to be selected to be in the above-mentioned ratio. When an edible oil is regenerated by using this filter, the regenerated oil of the same clearness as that of new one and of rare smell is obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a filter that purifies edible oil, particularly oil degraded by frying such as tempura, so that it can be reused.

(Prior Art) It is known to regenerate edible oil that has deteriorated through use. For example, edible oil cleaners are commercially available that combine a cartridge containing granular activated carbon and filter paper or nonwoven fabric.

Unlike industrial oil, edible oil itself is subject to taste and smell, so it is desirable that these elements be recycled to look like new.

Conventional products have the disadvantage that the recycled oil contains fine particles and has low transparency, as well as the inability to remove the fishy odor that most affects the sense of smell.

(Problems to be Solved) As a result of research into various adsorbents in order to develop regenerated filter materials or filters that do not leave behind fish odor, which was previously difficult to remove, the present inventors discovered that a combination or mixture of powdered activated clay and activated carbon. We obtained knowledge that it is effective.

Activated clay has been found to be particularly effective in removing fish odor, but it has the disadvantage that if the amount of activated clay is too large, the clay odor will transfer to the recycled oil.

The amount that does not leave a clay odor is 1 or less, preferably 30% or less based on 1 of activated carbon.

Furthermore, the residual clay odor also differs depending on the structure of the filter.

Since the above-mentioned compound adsorbent is in powder form and is inconvenient to use, various tests were conducted on materials that can serve as shape retainers or carriers that do not reduce the adsorption performance, and pulp was found to be effective.

Therefore, the present invention was completed by molding pulp and the above-mentioned adsorbent alone or as a mixture.

(Objective) - The object of the present invention is to provide a filter that is easy to handle and provides recycled oil that has transparency similar to that of a new oil, has no fish odor or clay odor, and is easy to handle.

(Structure) The filter of the present invention consists of adding an appropriate amount of water to a mixture of 90 to 10 weight percent of a mixture of 95 to 50 weight percent of activated carbon and 50 to 5 percent of activated clay, and 10 to 90 weight percent of pulp. It is then mixed together, compressed into a plate-like body of a predetermined shape, and dried.

Moreover, the upper layer made of activated clay and pulp and the lower layer made of activated carbon and pulp are stacked in two layers, and in this case, the ratio of activated carbon to activated clay is selected to be the same as above.

In the present invention, the pulp aggregate functions not only as a filter itself, but also as a holder for activated clay, etc., so the amount to be blended may be selected depending on the purpose or usage.

(Example) (1) 0.8 g of pulp and 1.0 g of activated clay with 300 water
m, mixed uniformly with a homogenizer, filtered on a Buchner funnel, and layered with a mixture of 2.2 g of 1 bulb and 3.0 g of activated carbon in the same manner.

This was compressed at a pressure of 10 kg/cm using a test press, dehydrated, and then dried at 105° C. for 2 hours to obtain a two-layer structure (1) as shown in FIG.

This was set in the filter (4) shown in Figure 1 with the activated clay layer (2) on top and the activated carbon retention layer (3) on the bottom. - was heated to 160°C and poured into the upper container (5a), and the oil was filtered.・ (2) 3.0g of pulp, 2.0g of activated clay, and 2.0g of activated carbon
．． Add 300 g of water to 0 g, mix with a homogenizer, and filter on a Buchner funnel.

This was compressed using a test press at a pressure of 10 kg/am, dehydrated, and then dried at 105° C. for 2 hours.

This plate-shaped body (1a) was set in the filter (4) shown in FIG. 1, and degraded oil was regenerated in the same manner as in Example (1).

In the figure, (6) is the flange of the container (5), (7) is the silicon packing, (8) is the clamp ring, (9) is the perforated plate, and (10) is the receiver.

The results of the treatments in each of the above Examples are shown in the table below.

(Margin below)

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a filter used in the test, and FIG. 2 is a sectional view of an example filter of the present invention. (1)...Filter of the present invention, (9)...Perforated plate Patent applicant Gakken Co., Ltd. Agent Patent attorney Hiroshi Nakamura L, 11W, 2W

Claims (3)

[Claims] (1) A mixture of 10 to 90% by weight of pulp and 90 to 10% by weight of activated carbon and activated clay is mixed with water, molded,
An edible oil regeneration filter characterized by being dry. (2) The blending ratio of activated carbon and activated clay is 95 to 50.
The edible oil regenerating and purifying filter according to claim 1, wherein the activated clay content is in the range of 50 to 5% by weight. (3) Edible oil regeneration in which an upper layer made of a mixture of pulp and activated clay and a lower layer made of a mixture of pulp and activated carbon are brought into close contact during formation, and the ratio of activated carbon to activated clay is 95-50% by weight: 50-5% by weight. purification filter.