KR100298655B1 - Aaaaa - Google Patents

Abstract

The present invention is a safe separation method of effluent oil using the developed oil solidifying agent (gelization) to solve all the fundamental problems of the oil dispersant used as a conventional oil effluent separation agent (油 分散 劑) If used in an appropriate situation, it can maximize the prevention of environmental pollution.

The emulsifiers used as conventional oil spill removers require at least several decades of recovery time to generate secondary contamination and restore to a conventional clean environment.

Therefore, by using the gelling agent developed in the present invention, the spilled oil can be solidified in a short time to prevent diffusion and can be easily removed, and can also be used for the treatment of harmful chemicals. In particular, in the case of oil spill accidents in the early stages of large amounts of oil discharged or confined with oil fences, they solidify instantly and float on the water surface to remove them, preventing the spread of spilled oil and controlling the pollution without causing secondary pollution. It is a big advantage to be able to maximize.

Description

Oil Solidifying Agents {AAAAA}

The present invention relates to an oil solidifying agent having an improved function. In particular, the present invention is intended to facilitate the diffusion prevention and removal of effluent oils or organic harmful solutions due to low manufacturing cost and improved coagulation, and to facilitate the removal of styrene-based rubbers and interfaces. The present invention relates to oil solidifying agents which have been made with the active agent as a whole or as a subject. In general, the main causes of pollution of the soil and marine environment and destruction of natural ecosystems are the outflow of organic harmful compounds and oil spills at sea and on land. For example, the rapid increase in marine traffic is increasing the possibility of oil pollution accidents, and oil spilled from land-based low-oil facilities is seeping into the surface and contaminating groundwater or depleting soil resources. However, until recently, the diffusion methods for the organic harmful compounds and effluent oils There is a lack of adequate and efficient measures for the removal and removal of these compounds, and the necessity of such measures is now being taken seriously to protect the environment.For example, if phenol is exposed to organic harmful compounds in fresh water, it is removed. The only way to do this is to limit the passive treatment of adsorptive separation using activated charcoal in purified water, so no further removal is possible. Furthermore, environmental hormone problem caused by phenol being concentrated along the river and concentrated in the ecosystem Even the risk of fatal damage to the human body was plentiful.

In addition, heavy oil bunker oil, which spills in large quantities when stranded at sea, involves the most serious damage to the marine ecosystem.This bunker oil is usually converted into a W / O emulsion, which is a water-containing high-viscosity substance through many changes over time. Only the physical control operations are possible, so the damage is greater than the damage caused by light oil. The traditional method of controlling oil spills in oil crabs is to spread oil fences, sorbents and oil dispersants, etc. The oil fence consists of a body part made of polyester, polyamide, polyurethane-based rubber and synthetic resin, and a connection part of stainless steel and aluminum alloy for use in oil diffusion prevention, recovery and control operations. Installation is cumbersome and mostly used for preventing diffusion rather than oil removal. In addition, the oil adsorption material has been proposed as a physical recovery method of effluent oil and is widely used in the present, and it is proposed to adsorb and remove oil that easily absorbs oil on the surface of the effluent oil. It is composed of polypropylene fiber which has oil repellency while maintaining water repellency, and has the advantage of being able to adsorb oil about 20 times more than its own weight, but it should not settle after adsorption and should be recovered with non-toxic low density. Of course, it is usually used in combination with the oil fence because it is required to maintain weather resistance without change in properties at low temperature and high temperature, constant oil absorption and absorptivity per unit of weight, durability, and tensile strength, and collect oil immediately after oil absorption. Failure to do so may cause secondary environmental pollution due to sorbents. In addition to this problem, it has been pointed out that harmful substances such as dioxins are also generated during incineration after collection.In contrast, oil dispersants have a large spill area or a thin film of oil, and the weather is rather bad. It can function very effectively in the control of oils. Soluble dispersant composed of solutes and water, petroleum and ether solvents, which are surfactants, is composed of lipophilic and hydrophilic surfactants. It decreases interfacial tension and diffuses into water through emulsion dispersion, that is, by contacting with effluent oil, the oil is made into fine particles, and emulsified and dispersed into seawater. It is to promote the natural purification of evaporation, oxidation, etc. to remove the oil spill. However, the use of this oil dispersant is not easy if the oil spilled on the sea forms a chocolate mouse with increased viscosity and moisture, which is a W / O emulsion due to natural stirring energy such as waves in a short time. Therefore, the oil is divided into liquid and powder type for the purpose of preventing the diffusion of spilled oil by promoting the solidification of oil in a short time in the form of a macromolecular cake and floating it on the surface of the sea water. Gelling agents have been proposed in various ways. That is, the gelling agent for the offshore oil solidification treatment and the offshore oil solidification treatment method proposed by Korean Patent Registration No. 1997-6135 are representative examples. When surfactant is added to phosphorus latex and stabilized, it is solidified when administered to seawater. However, the latex-based gelling agent is not commercialized at all because its efficiency is very low, and it is a liquid eugel mainly composed of amino acid derivatives and sorbitan. The topical agent is tangled with the gelling agent and the oil and then gelled it is collected through the skimmer, etc., but the solidification is easily broken and the oil is buried there is a lot of difficulties in the collection.

Therefore, the present invention makes it possible to prevent the diffusion of organic hazardous chemical solution and spilled oil and to separate the oil and water in a short time, to make the solidification of the floatation significantly lower than the specific gravity of the seawater, to prevent further diffusion and to facilitate the collection. The oil solidifying agent which can secure the reliability and efficiency of oil pollution control by promoting recycling through solid reprocessing process is aimed at the object of the present invention. To achieve the above object, the present invention provides a styrene-based rubber and a surfactant. It is characterized in that an oil solidifying agent can be produced on the whole or subject matter.

The oil solidifying agent of the present invention becomes clearer through the following detailed description. The present invention polymerizes butadiene and styrene in an organic solvent under an organic catalyst to form styrene and isoprene in a block copolymer having a linear or radial structure and an organic solvent. The block copolymer prepared by polymerizing under an organic catalyst is provided through a physical bonding process alone or with a nonionic surfactant, respectively.

In the present invention, first, styrene-butadiene-styrene rubber is prepared by copolymerizing 1,3-butadiene 30% to 55% and styrene 45% to 70% under an alkyl-lithium catalyst in an n-hexane solvent. Styrene and isoprene-styrene rubbers are prepared by copolymerizing styrene and isoprene using a similar method to the above. Each of the above rubbers is used alone or in a mixed form of 20% to 40%, and they are used as a solvent, methanol as a polar solvent. Among the surfactants such as polyoxyethylene alkyl ether non-ionic surfactants (HLB 10 or less), polyoxyethylene oxypropylene glycol compounds, sorbitan ester surfactants, sorbitan ester ethoxy compounds, fatty acid ester compounds and the like After physically binding in a solution of 0.1% to 10% concentration in a state of mixing at least one 0.1% to 4%, respectively The present invention has the versatility of being used in a pad or roll state or filled with them. Hereinafter, reproducibility is confirmed by presenting a preferred embodiment of the present invention. Can be.

< Example 1> When the styrene-styrene-butadiene (SBS) rubber and the styrene-isoprene-styrene (SI) rubber were used individually by mixing 0% to 100%, 2g of solidifying agent was added to 10g of each organic solution. When the solidification time and the degree of solidification showed the results of the measurements shown in Tables 1 to 3.

[Table 1] Solidification according to the solidifying agent (SBS only)

[Table 2] Solidification according to the solidifying agent (SI only)

TABLE 3 Solidification by solidifying agent (50% mixture each)

* The above experimental conditions were carried out at room temperature with 10 g of each test solution in 0.4 L of saline solution (2 wt% salt).

<Example 2>

Styrene-Butadiene-Styrene rubber and Styrene-Isoprene-Styrene rubber are mixed at 0% to 100% and added to methanol solution containing each surfactant (0.1% to 10% by weight), followed by stirring for a certain time Complete the bond, separate and dry.

[Composition of Solidifying Agent]

SBS & SI 100%

5% polyoxyethylene alkyl ether type nonionic surfactant

Polyoxyethylene Oxypropylene Glycol Compound 3%

Methanol 30%

-------------------------------------------------- ----

138% in total

When the solidifying agent provided through the above manufacturing method was added to 1g to 2g of the solidifying agent for each 10g of the organic solution, the solidification time and the degree of solidification showed the results of the measurements as shown in Table 4.

[Table 4] Solidification according to the solidifying agent (SBS alone + surfactant)

[Table 5] Solidification according to the solidifying agent (SI alone + surfactant)

[Table 6] Solidification according to the solidifying agent (each SBS, SI mixture + surfactant)

* The above experimental conditions were carried out at room temperature with 10 g of each test solution in 0.4 L of saline solution (2 wt% salt).

Accordingly, the present invention, as described above, is applied to each organic solution using a solidifying agent treated with a surfactant, and thus the result of good solidification is shown regardless of the type of organic solution such as light oil, heavy oil and organic solvent. As a result, the solidifying agent of the present invention can realize a reliable and high efficiency control effect without the occurrence of secondary contamination by the emulsifier at a relatively low manufacturing cost, and can also respond quickly to the accident of leakage of organic harmful solutions in the river. Has practical value.

Claims (2)

For the treatment of spilled oils and organic harmful solutions and separation of oil and water, styrene rubbers and surfactants are used to prepare oil solidifying agents, all of which are styrene-butadiene-styrene rubbers and styrene-isoprene-styrene rubbers. And they are any one selected from the mixture of 20% to 40% each, The surfactant may be a polyoxyethylene alkyl ether non-ionic surfactant (HLB 10 or less), a polyoxyethylene oxypropylene glycol compound, a sorbitan ester type surfactant, a sorbitan ester epoxy compound, a fatty acid ester type compound, and one or more of them. Oil solidifying agent, characterized in that any one selected from the mixture of 0.1% to 4%. The solidifying agent of claim 1, wherein the oil solidifying agent may be used in a pad or roll state.