JPH10303A - Oily waste liquid adsorbent - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an oily waste liquid adsorbent which has a sufficient amt. of adsorption, is good in handling quality after adsorption and allows the use of the adsorbent after use as fuel by constituting the adsorbent of a mixture composed of pulverized grain-like fibers and a dehydrating agent and specifying the compounding ratio (by volume) thereof to a specific value. SOLUTION: This adsorbent consists of the mixture composed of the pulverized grain-like fibers and the dehydrating agent and the compounding ratio thereof is the pulverized grain-like fibers/the dehydrating agent = 7/2 to 10/1 (more preferably 9/2 to 9/1). The grain-like fibers include rice bran, wheat bran, bean curd lees, etc. The use of one or >=2 kinds thereof in combination is possible. The dehydrating agent includes quicklime. The amt. of the waste liquid to be added to the adsorbent is possible up to the addition of about 400 times the amt. (by volume) of the adsorbent. Further, the fiber length of the grain-like fibers and the grain size of the dehydrating agent are respectively preferably specified to about 0.1 to 0.7mm and about 0.05 to 0.2mm.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an oily waste liquid adsorbent,
In particular, the present invention relates to an adsorbent capable of adsorbing ink-containing waste liquid generated when washing and removing oily printing ink adhered to a plate copper or the like of an offset printing press with a cleaning liquid, and a powdered fuel obtained by the adsorbent.

[0002]

2. Description of the Related Art Conventionally, for example, in an offset printing machine, after color printing has been completed, as a pre-process for printing ink of another color, the ink adhering to the plate copper or the like is washed with a petroleum-based cleaning liquid, and this is caused. Ink-containing waste liquid (hereinafter “waste liquid”)
Was stored in a container and was discarded.

[0003]

However, in the conventional method, the waste liquid is easily spilled from the container, and the clothes of the worker may be stained. In addition, since a large amount of waste liquid comes out, it must be discarded many times a day, and workability is poor.

[0004] Therefore, it has been considered to use dried beet moss pieces as an adsorbent for waste liquid containing ink.

[0005] However, the beet moss strip has a problem that the adsorbed amount is not sufficient and a desired amount of ink-containing waste liquid cannot be adsorbed.

Accordingly, an oily waste liquid adsorbent utilizing dry peat is disclosed in Japanese Patent Application Laid-Open No. 4-193388.

However, a special adsorbent must be used, and there is a problem in cost.

In view of the above, the present invention utilizes waste materials which have a sufficient amount of adsorption, have good handling properties after adsorption, and can utilize the used adsorbent as fuel. An object of the present invention is to provide an oily waste liquid adsorbent.

[0009]

The present invention solves the above-mentioned problems by the following constitutions.

An adsorbent for adsorbing oily waste liquid such as waste oil, which is composed of a mixture of pulverized cereal fiber and a dehydrating agent, and the mixing ratio (volume ratio) of the cereal fiber / dehydrating agent = 7 / 2 to 10/1.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below.

The oily waste liquid adsorbent of the present invention (hereinafter, may be abbreviated as "adsorbent") comprises a mixture of pulverized cereal fiber and a dehydrating agent.

Examples of the cereal fiber include rice bran, bran, okara and the like, and these can be used alone or in combination of two or more.

Examples of the dehydrating agent include quicklime.

The mixing ratio of the cereal fiber and the dehydrating agent is preferably cereal fiber / dehydrating agent = 7/2 to 10/1 (preferably 9/2 to 9/1) by volume ratio. When the blending ratio is less than 7/2, the ratio of the cereal fiber is too low to obtain a sufficient adsorption effect and a sticky feel may be left after use. When the ratio is 10/1 or more, the cereal fiber may be removed. This is because even if the above addition is made, no increase in the adsorption rate is observed, which is waste.

The amount of waste liquid added to the adsorbent can be up to about 400 times the volume of the adsorbent (volume ratio).

Further, the fiber length of the cereal fiber and the particle size of the dehydrating agent are each 0.1 to 0.7 mm (preferably,
0.2 to 0.5 mm) and 0.05 to 0.2 mm (preferably 0.1 to 0.15 mm).

The adsorbent of the present invention is non-sticky after use, has excellent handling properties, and can be reused as a powder fuel.

In the present embodiment, as the waste liquid, an ink-containing waste liquid generated when an oil-based printing ink is washed with a petroleum-based washing liquid is described. However, the adsorbent of the present invention is used in other oil-based liquids such as edible oil. It can also be used for waste liquid. Further, since it is non-sticky and excellent in handleability after adsorption, it can be used in various applications such as a treatment agent for sanitary waste used for animals such as pets.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail.

In Examples 1 to 4, admixtures having the formulations shown in Table 1 were mixed to prepare adsorbents. Next, waste liquids in the amounts shown in Table 1 are respectively added to the prepared adsorbents and stirred well.

In Examples 1 to 4, the adsorbents after use were all non-sticky and showed excellent handleability. In addition, when burned as powdered fuels, they did not soot and all exhibited good flammability.

In addition, when the adsorbents of Examples 1 to 4 were used as cat litter sand, both the odor adsorption and the water absorption were good.

[0024]

Action / Effect of the Invention The oily waste liquid adsorbent of the present invention has the above-mentioned structure, and thus has the following action / effect.

Since the adsorbent uses waste materials such as bran and rice bran, it can be manufactured at low cost.

Since a very large amount of waste liquid can be adsorbed with a small amount of adsorbent and the handling property after the adsorption is good, the workability is remarkably improved.

Further, since the used adsorbent can be reused as a powder fuel, it also has recyclability.

Further, since it is excellent in handling property without stickiness after adsorption, it can be used as a treatment agent for sanitary waste used for animals such as pets.

[0029]

[Table 1]

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification number Office reference number FI Technical indication location C10L 7/00 C10L 7/00

Claims (6)

[Claims] 1. An adsorbent for adsorbing oily waste liquid such as waste oil, comprising a mixture of pulverized cereal fiber and a dehydrating agent, wherein the blending ratio (volume ratio) of the cereal fiber / dehydrating agent is 7
/ 2 to 10/1. 2. The oily waste liquid adsorbent according to claim 1, wherein the dehydrating agent is quicklime. 3. A powdered fuel comprising an adsorbent to which an oily waste liquid such as waste oil is adsorbed, wherein the adsorbent comprises a mixture of pulverized cereal fiber and a dehydrating agent, and the mixing ratio (volume ratio) ), The cereal fiber / dehydrating agent = 7
/ 2 to 10/1. 4. The powder coating according to claim 3, wherein the dehydrating agent is quicklime. 5. A treating agent for sanitary waste used for animals such as pets, comprising a mixture of crushed cereal fiber and a dehydrating agent, wherein the compounding ratio (volume ratio) is the cereal fiber / Dehydrating agent = 7
/ 2 to 10/1, a treating agent for sanitary waste. 6. The treatment agent for sanitary waste according to claim 5, wherein the dehydrating agent is quicklime.