KR101104978B1 - method of recycled polyol waste - Google Patents
method of recycled polyol waste Download PDFInfo
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- KR101104978B1 KR101104978B1 KR1020090044870A KR20090044870A KR101104978B1 KR 101104978 B1 KR101104978 B1 KR 101104978B1 KR 1020090044870 A KR1020090044870 A KR 1020090044870A KR 20090044870 A KR20090044870 A KR 20090044870A KR 101104978 B1 KR101104978 B1 KR 101104978B1
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- sulfate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/18—Polyhydroxylic acyclic alcohols
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
본 발명은 폴리올 폐기물을 재생하기 위하여, 바람직하게는 폴리올과 중화제 및 촉매염(즉, 황산염과 인산염)을 효과적으로 분리하기 위하여 폴리올 폐기물을 용제에 분산시키고 산으로 중화시키는 과정으로 폴리올 폐기물을 재생시키는 방법을 제시한다.The present invention is a method for regenerating polyol wastes by dispersing the polyol wastes in a solvent and neutralizing them with an acid, in order to effectively separate the polyols, neutralizing agents and catalyst salts (i.e. sulfates and phosphates). To present.
폴리올 폐기물, 중화제, 인산염, 황산염, 비료, 동물사료 Polyol waste, neutralizing agent, phosphate, sulfate, fertilizer, animal feed
Description
본 발명은 폴리올 폐기물의 재생 방법에 관한 것으로서, 더욱 상세하게는 극성 용매와 비극성 용매를 이용하여 폴리올 폐기물로부터 중화제와 폴리올 및 인산염과 황산염을 각각 분리하여 생산할 수 있는 폴리올 폐기물의 재생 방법에 관한 것이다.The present invention relates to a polyol waste regeneration method, and more particularly, to a polyol waste regeneration method that can be produced by separating the neutralizing agent, polyol, phosphate and sulfate from the polyol waste by using a polar solvent and a nonpolar solvent.
잘 알려진 바와 같이, 폴리올을 생산하는 방법은 원료에 촉매를 활성화시켜 일정한 온도와 일정한 압력을 유지하면서 산화에틸렌, 산화프로필렌, 산화부틸렌 등을 일정한 몰(mole) 수량을 부가하여 제품을 생산한다.As is well known, the polyol production method produces a product by adding a constant mole quantity of ethylene oxide, propylene oxide, butylene oxide, etc. while maintaining a constant temperature and a constant pressure by activating a catalyst to a raw material.
한편, 상기의 폴리올을 생산할 때에는 반응공정에서 사용되었던 촉매를 제거하는 과정에서 폴리올 폐기물이 발생하는데, 구체적으로는 폴리올의 생산공정에서 사용되는 촉매를 제거하기 위해서는 중화제를 사용하고, 상기 촉매를 제거하기 위해서 중화제를 반응기에 투입하여 교반 처리하면 반응공정에서 사용되었던 촉매는 중화제에 염의 형태로 흡착되어 중화제염을 형성해서 반응기 내에 존재한다. 이때 발생한 촉매를 흡착한 중화제염을 폴리올 폐기물이라 한다.Meanwhile, when producing the polyol, polyol waste is generated in the process of removing the catalyst used in the reaction process. Specifically, to remove the catalyst used in the production process of the polyol, a neutralizing agent is used to remove the catalyst. If the neutralizing agent is added to the reactor and stirred, the catalyst used in the reaction process is adsorbed to the neutralizing agent in the form of a salt to form a neutralizing agent salt and is present in the reactor. The neutralizing salt adsorbing the catalyst generated at this time is called polyol waste.
그러나, 이와 같은 폴리올 폐기물은 산업 폐기물로 분류되어 있으며, 현재는 폴리올 생산시에 발생하는 폴리올 폐기물은 재활용하기보다는 전량 폐기 처분되기 때문에 제품의 손실 및 환경오염을 유발시킬 뿐만 아니라 자원을 낭비하는 결과를 초래하고 있다.However, these polyol wastes are classified as industrial wastes. At present, polyol wastes generated during the production of polyols are disposed of in the entirety rather than being recycled, resulting in product loss and environmental pollution as well as waste of resources. It is causing.
본 발명은 폴리올의 생산시에 발생하는 폐기물을 극성 용매와 비극성 용매를 사용하여 중화제와 폴리올 및 황산염과 인산염으로 분리하여 재활용할 수 있도록 하는 폴리올 폐기물의 재생 방법을 제공하는데 그 목적이 있다.SUMMARY OF THE INVENTION An object of the present invention is to provide a method for regenerating polyol waste, in which waste generated in the production of polyol can be separated and recycled into a neutralizing agent, polyol, sulfate and phosphate using a polar solvent and a nonpolar solvent.
또한, 본 발명은 황산염을 동물사료로 사용하고, 인산염을 비료로 사용할 수 있도록 하는 폴리올 폐기물의 재생 방법을 제공하는데 그 목적이 있다.It is also an object of the present invention to provide a method for regenerating polyol waste which makes it possible to use sulphate as animal feed and phosphate as fertilizer.
본 발명은 폴리올 폐기물과 용제를 넣어 교반시켜서 폴리올과 촉매 및 중화제로 분리한 다음, 상기 분리된 폐기물을 여과시켜 폴리올과 촉매 및 용제로 이루어진 여액과 중화제로 분리하는 단계와; 상기 여액을 50rpm~400rpm의 속도로 교반시키면서 65℃ 이상의 온도로 가열시켜 용제를 회수하고, 상기 폴리올과 촉매가 남아있는 반응기에 산성물질을 투입하여 촉매를 중화시켜 폴리올과 인산염 및 황산염을 형성하는 단계와; 통상의 여과기를 사용하여 여과시켜 폴리올을 생성하고, 상기 여과기에 인산염과 황산염이 남아있는 단계로 이루어짐을 특징으로 한다.The present invention comprises the steps of separating the polyol waste and solvent by stirring and separating the polyol, catalyst and neutralizing agent, and then filtering the separated waste separated into a filtrate and a neutralizing agent consisting of polyol, catalyst and solvent; The filtrate is heated to a temperature of 65 ℃ or more while stirring at a rate of 50rpm ~ 400rpm to recover the solvent, neutralizing the catalyst by adding an acidic substance to the reactor in which the polyol and catalyst remain to form a polyol, phosphate and sulfate Wow; Filtration using a conventional filter to produce a polyol, characterized in that consisting of the step of remaining phosphate and sulfate in the filter.
본 발명은 폐기 처리되는 폴리올 폐기물을 중화제와 폴리올 및 황산염과 인산염으로 재생할 수 있기 때문에 환경오염을 방지할 수 있으며, 또한 상기 폴리올 폐기물의 재활용으로 인해 부가가치를 높일 수 있는 장점이 있다.The present invention can prevent the environmental pollution because the polyol waste to be disposed of can be recycled with neutralizing agent, polyol, sulfate and phosphate, and also has an advantage of increasing the added value due to the recycling of the polyol waste.
뿐만 아니라, 본 발명은 폴리올 폐기물을 재생할 때 사용된 용제(즉, 극성 용매 또는 비극성 용매)를 회수하여 재사용할 수 있으며, 이는 환경오염을 방지하고 원가절감효과를 가져올 수 있으며, 또한 상기 황산염은 동물사료로 사용하고 상기 인산염은 비료로 사용할 수 있는 이점이 있다.In addition, the present invention can recover and reuse the solvent (ie polar solvent or non-polar solvent) used when recycling the polyol waste, which can prevent the environmental pollution and bring down the cost saving effect, and also the sulfate Used as feed and the phosphate has the advantage that can be used as a fertilizer.
이하 본 발명의 바람직한 실시 예를 구체적으로 설명하면 다음과 같다. 후술될 상세한 설명에서는 상술한 기술적 과제를 이루기 위해 본 발명에 있어 한 개의 대표적인 실시 예를 제시할 것이다. 그리고 본 발명으로 제시될 수 있는 다른 실시 예들은 본 발명의 구성에서 설명으로 대체한다.Hereinafter, a preferred embodiment of the present invention will be described in detail. DETAILED DESCRIPTION In the following detailed description, one representative embodiment of the present invention is set forth in order to achieve the above technical problem. And other embodiments that can be presented with the present invention are replaced by the description in the configuration of the present invention.
본 발명에서는 폴리올 폐기물을 재생하기 위하여, 바람직하게는 폴리올과 중화제 및 촉매염(즉, 황산염과 인산염)을 효과적으로 분리하기 위하여 폴리올 폐기물을 용제에 분산시키고 산으로 중화시키는 과정으로 폴리올 폐기물을 재생시키는 방법을 구현하고자 한다.In the present invention, in order to recover the polyol waste, a method for regenerating the polyol waste by dispersing the polyol waste in a solvent and neutralizing it with an acid, in order to effectively separate the polyol, the neutralizing agent and the catalyst salt (i.e. sulfate and phosphate). We want to implement
즉, 본 발명에서는 폴리올 폐기물과 용제(구체적으로는, 극성 용매)를 반응기에 넣어 교반시켜 폴리올과 촉매, 그리고 중화제로 분리한 다음, 상기 폴리올과 촉매 그리고 중화제로 분리된 폴리올 폐기물을 여과기를 사용하여 여과시켜 여액과 중화제로 분리하는 공정을 제시한다. 이때 상기 여과기를 통과한 성분은 폴리올과 촉매 및 용제이고, 상기 여과기에 남아있는 고형성분은 중화제이다.That is, in the present invention, a polyol waste and a solvent (specifically, a polar solvent) are put in a reactor and stirred to separate the polyol, the catalyst, and the neutralizer, and then the polyol waste separated from the polyol, the catalyst, and the neutralizer is filtered using a filter. The process of separating by filtrate and neutralizing agent is presented. At this time, the components passed through the filter are a polyol, a catalyst and a solvent, and the solid component remaining in the filter is a neutralizing agent.
한편, 이와 같은 공정을 수행할 때 본 발명에서는 폴리올과 촉매를 분리하기 위하여 산으로 중화시키는데, 상기 산의 종류는 산성을 띤 물질(구체적으로는, 황산, 인산, 초산, 염산 등)을 사용한다.Meanwhile, in the present invention, the present invention neutralizes the polyol with an acid to separate the catalyst, and the acid is used as an acidic substance (specifically, sulfuric acid, phosphoric acid, acetic acid, hydrochloric acid, etc.). .
이하에서는, 상기한 바와 같은 본 발명의 폴리올 폐기물의 재생 방법을 실시 예를 들어 구체적으로 설명하고자 한다.Hereinafter, a method for regenerating the polyol waste of the present invention as described above will be described in detail by way of examples.
{실시예 1}{Example 1}
교반용기에 폴리올 폐기물과 극성 용매를 넣어 교반시켜서 폴리올과 촉매 및 중화제로 분리한 다음, 상기 분리된 폐기물을 여과기를 사용하여 여과시켜 상기 여과기를 통과한 여액(바람직하게는, 폴리올과 촉매, 용제)과 여과기에 남아있는 중화제로 분리한다.The polyol waste and the polar solvent were added to the stirring vessel and stirred to separate the polyol, the catalyst and the neutralizing agent. The separated waste was filtered using a filter, and the filtrate passed through the filter (preferably, the polyol, the catalyst and the solvent). And neutralizer remaining in the filter.
이후, 상기 반응기에 극성용매가 포함되어 있는 폴리올과 촉매를 투입한 다음, 50rpm~400rpm의 속도로 교반시키면서 65℃ 이상의 온도로 가열시키게 되면, 상기 극성 용매는 증류되어 냉각기를 통해 응축되어 용기에 회수되어 재활용된다.Then, the polyol and the catalyst containing the polar solvent is added to the reactor, and then heated at a temperature of 65 ℃ or more while stirring at a rate of 50rpm ~ 400rpm, the polar solvent is distilled and condensed through a cooler and recovered to the vessel Recycled.
다음, 폴리올과 촉매가 남아있는 반응기에 위에서 언급한 산성물질을 투입하여 촉매를 중화시키게 되면, 상기 반응기에는 폴리올과 인산염 및 황산염이 형성되며, 상기 물질(즉, 폴리올과 인산염 및 황산염)을 여과기를 사용하여 여과시키면 상기 여과기를 통과한 여액은 폴리올이 되고 상기 여과기에는 황산염과 인산염이 남아 있게 된다.Next, when the above-mentioned acidic substance is added to the reactor in which the polyol and the catalyst remain, and the catalyst is neutralized, the polyol, the phosphate and the sulfate are formed in the reactor, and the material (ie, the polyol, the phosphate and the sulfate) is filtered. Filtration with use results in the filtrate passing through the filter becoming a polyol and the sulfate and phosphate remaining in the filter.
이후, 상기 폴리올은 중화제로 처리하여 상품화하고, 상기 황산염은 동물사료로 사용하고, 상기 인산염은 비료로 사용한다.Thereafter, the polyol is commercialized by treatment with a neutralizing agent, the sulfate is used as an animal feed, and the phosphate is used as a fertilizer.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR19980070889A (en) * | 1997-01-27 | 1998-10-26 | 크누트샤우에르테 | Process for producing polyether polyol |
| KR20040029262A (en) * | 2002-09-30 | 2004-04-06 | 바이엘 악티엔게젤샤프트 | Processes for Preparing Ethylene Oxide-Capped Polyols |
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| KR19980070889A (en) * | 1997-01-27 | 1998-10-26 | 크누트샤우에르테 | Process for producing polyether polyol |
| KR20040029262A (en) * | 2002-09-30 | 2004-04-06 | 바이엘 악티엔게젤샤프트 | Processes for Preparing Ethylene Oxide-Capped Polyols |
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