KR0171265B1 - Agent for separation unburned carbon from fly ash - Google Patents
Agent for separation unburned carbon from fly ash Download PDFInfo
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- KR0171265B1 KR0171265B1 KR1019960021590A KR19960021590A KR0171265B1 KR 0171265 B1 KR0171265 B1 KR 0171265B1 KR 1019960021590 A KR1019960021590 A KR 1019960021590A KR 19960021590 A KR19960021590 A KR 19960021590A KR 0171265 B1 KR0171265 B1 KR 0171265B1
- Authority
- KR
- South Korea
- Prior art keywords
- fly ash
- unburned carbon
- coal
- carbon content
- weight
- Prior art date
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 38
- 239000010881 fly ash Substances 0.000 title claims abstract description 27
- 239000003795 chemical substances by application Substances 0.000 title description 3
- 238000000926 separation method Methods 0.000 title 1
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 22
- 239000003208 petroleum Substances 0.000 claims abstract description 19
- 239000008162 cooking oil Substances 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 8
- 239000008157 edible vegetable oil Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 2
- 238000007796 conventional method Methods 0.000 claims 1
- 235000015112 vegetable and seed oil Nutrition 0.000 claims 1
- 239000008158 vegetable oil Substances 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000000446 fuel Substances 0.000 abstract 1
- 238000002156 mixing Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000010883 coal ash Substances 0.000 description 4
- 238000005188 flotation Methods 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- WVYWICLMDOOCFB-UHFFFAOYSA-N 4-methyl-2-pentanol Chemical compound CC(C)CC(C)O WVYWICLMDOOCFB-UHFFFAOYSA-N 0.000 description 2
- 239000004115 Sodium Silicate Substances 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- -1 diesel Substances 0.000 description 2
- 239000002283 diesel fuel Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 2
- 229910052911 sodium silicate Inorganic materials 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- PHTQWCKDNZKARW-UHFFFAOYSA-N isoamylol Chemical compound CC(C)CCO PHTQWCKDNZKARW-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B5/00—Washing granular, powdered or lumpy materials; Wet separating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Processing Of Solid Wastes (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
본 발명은 석탄을 연료로 사용하는 화력발전소에서 석탄을 연소시킨후, 발생되어 폐기되고 있는 석탄회(플라이 애쉬)중에 약 10%정도 함유되어 있는 미연탄소분을 효율적이고 경제적으로 제거할 수 있는 습식 부유선별처리방법에서 필연적으로 사용하는 시약 및 그 제조방법에 관한 것으로서, 기존의 경우 습식처리방법은 사용되는 시약의 종류나 량이 과다하여 경제성이 없는 문제점이 있었던바, 이를 해소하고자 본 발명은 식용유 또는 폐식용유와 석유를 소정비율로 혼합하여 얻어진 시약 및 그 제조방법을 제공하여 이를 활용하게 되면 부유선별기를 사용하는 습식처리방법에 있어서 처리상 간편하고 경제적으로 유리하며 처리량을 증대시키고 정제석탄회의 생산성을 증개시켜 상업적으로 활용할 수 있도록 하는데 그 특징이 있다.The present invention relates to a method for efficiently and economically removing unburned carbon content in coal fly ash produced by burning coal in a thermal power plant using coal as fuel, The present invention relates to a reagent which is inevitably used in a treatment method and a method for producing the same. In the conventional wet treatment method, And petroleum at a predetermined ratio, and a method for producing the same. In the wet treatment method using the floating separator, the process is simple and economical, and the throughput is increased and the productivity of the purified fly ash is increased. And is commercially available.
Description
본 발명은 석탄을 이용하는 화력발전소에서 석탄을 연소시킨후, 발생되어 폐기되고 있는 석탄회(플라이 애쉬, 이하로부터 석탄회라고 함)중에 약 10%정도 함유되어 있는 미연탄소분(타지않고 남은 석탄분)을 효율적으로 제거할 수 있는 시약 및 그 제조방법에 관한 것이다.The present invention relates to an unburned carbon fraction (unburned coal fraction) contained in about 10% of fly ash (hereafter referred to as coal fly ash), which is generated and discarded after burning coal in a coal-fired thermal power plant, And a method for producing the same.
현제 석탄회중 10%정도함유된 미연탄소탄분을 제거하기 위한 기존처리방법중 건식의 선별방법인 공기분급법 등으로는 최대5%정도까지만 제거가 가능하나, 이러한 정제 석탄회의 사용상 여러 가지 문제로 인하여 산업에 재활용하기 어렵기 때문에 이미 선진국 특허 미국에서는 여러 가지 난제에도 불구하고 습식처리 공정을 변경하여 미연탄소분을 1%까지 감소시키는 노력을 기울이고 있는 실정이다. 이렇게 석탄회중 미연탄소분을 1%이하로 제거를 하여야만 건축 및 산업용으로 충분히 사용 공급할 수 있기 때문이다.Currently, only about 5% can be removed by air classification method, which is a dry sorting method among the conventional treatment methods for removing unburned carbon char in about 10% of the fly ash. However, due to various problems in using the refined fly ash Because it is difficult to recycle into the industry, developed countries have already made efforts to reduce unburned carbon content by 1% by changing the wet processing process in the US despite various difficulties. In this way, the unburned carbon content in the fly ash must be removed to 1% or less, so that it can be used for construction and industrial purposes sufficiently.
따라서 국내에서도 이미 시설가동중인 건식처리 시설들로서는 석탄회중 미연탄소분이 1%이하되게 하기는 불가능한 것으로 판단되기 때문에 국내의 건식처리공정도 다른 선진국과 마찬가지로 습식처리방법으로 석탄회중 미연탄소분을 제거하여야할 필요성이 제기되었다.Therefore, as dry processing facilities already in operation in Korea, it is considered impossible to make the unburned carbon content of coal ash less than 1%. Therefore, the dry processing process in Korea should be similar to other developed countries to remove unburned carbon content A need was raised.
종래의 석탄회중 미연탄소분을 제거할 수 있는 습식처리방법으로는 기름(주로석유)응집법이 널리 알려져 있는데 아직까지 만족할만한 효과를 거두지 못하고 있는 실정이며, 일반적으로 사용하는 습식처리방법으로는 부유선별방법이 있다.Conventionally, oil (mainly petroleum) agglomeration is widely known as a wet treatment method for removing unburned carbon content from coal fly ash. However, the wet agitation method has not yet satisfactorily effected yet. As a general wet treatment method, .
부유선별방법에서 통상적으로 사용하는 시약류로서는 광액의 수소이온 농도를 조절하는 조건제(주로 탄산나트륨, 가성소다등), 규산염광물들의 부유를 억제시킬 수 있는 억제제시약(규산소다등), 미연탄소분(주로 43마이크론 이하크기)의 포수제시약(석유, 경유, 디젤유, 석유벤젠등) 및 수포말(물거품)을 형성하게 하는 기포제 시약류(파인류, 메칠아이소 부틸 카비놀 에어로 프로트등) 여러 종류를 단계별로 조건탱크에 투입하여 일정시간 조건반응시키고, 이를 부유선별기 탱크로 옮겨 부유선별기에서 부유되는 미연탄소분을 제거하고 나머지 석탄회를 별도로 회수하여 농축, 탈수 및 건조시키는 습식방법으로 이미 사용해오고 있었으나, 이와같은 선별법에서는 필히 사용되어야 하는 시약류의 종류가 많고 사용량이 과량이기 때문에 경제적으로 부담이 컸었다. 또한 이러한 시약류를 사용할 경우에는 부유선별기 탱크내외 광액의 농도가 가급적 낮을수록 (즉 물을 많이 넣어야함)유리하기 때문에 처리량에 있어서 다량을 처리하지 못하는 중요한 문제점들이 발생되어왔다.Examples of reagents commonly used in float sorting methods include conditioning agents (mainly sodium carbonate, caustic soda, etc.) for controlling the hydrogen ion concentration in the optical solution, inhibitor reagents (such as sodium silicate) capable of inhibiting suspension of silicate minerals, (Such as petroleum, diesel, diesel oil, petroleum benzene, etc.) and foaming reagents (pine, methyl isobutylcarbinol aerofoort, etc.) that form water foam , And then they are transferred to a floating tank separator tank for removing the unburnt carbon content suspended in a floating separator and the remaining coal ash is separately recovered and concentrated, dehydrated and dried. Since there are many types of reagents that must be used in the screening method and the amount used is excessive, This is Slinky. In addition, when these reagents are used, it is advantageous that the concentration of the inner and outer liquid of the floating separator tank is as low as possible (that is, it is necessary to add a lot of water).
더욱이 부유선별기에서 미연탄소분을 가장효율적으로 포집-부유시켜 제거하기 위해 종래에 사용하던 시약들 즉, 석유, 경우 또는 디젤유 등을 사용하는 습식부유선별기에 있어서는 가격이 비싼 기포제 종류로서 파인유, 메칠아이소부틸카비놀, 에어로푸로트 등을 반드시 사용해야만 미연탄소분이 포집-부유될 수 있었고, 시약값도 비싸며 또한 구입하기도 곤란한 점이 있다.Furthermore, in the wet float sorter using conventional reagents, that is, petroleum, case or diesel oil, in order to collect and float the unburned carbon particles most efficiently in the floating separator, Isobutylcarbinol, and aeroplot must be used to trap and float the unburned carbon, and the reagent is expensive and difficult to obtain.
본 발명은 상기와 같은 문제점을 해결하고 결제성 그리고 환경적인 측면에서도 폐해를 가급적 줄이는 점을 고려하여 국내 화력발전소에서 발생되어 폐기되는 저품위 석탄회중 미연탄소분을 가장 경제적, 효과적 그리고 안정적으로 제거하기 위하여 부유선별기를 사용하는 습식처리 방법에 있어서 처리상 간편하고, 경제적으로 유리하며 처리량을 증가시켜 정제석탄회의 생산성을 증대시킬 수 있는 시약 및 그 제조방법을 제공하는데 그 목적이 있다.The present invention solves the above problems and reduces pollutants from the aspect of settlement and environment as much as possible. Therefore, in order to economically, effectively and stably remove the unburned carbon content of low-grade coal ash generated in domestic thermal power plants, It is an object of the present invention to provide a reagent which can be easily processed, economically advantageous, and increased in throughput in the wet treatment method using a sorter to increase the productivity of purified fly ash, and a method for producing the same.
또한, 본 발명의 다른 목적은 석탄회중 미연탄소분 제거를 위한 습식처리방법에서 필연적으로 사용되어야하는 각종 시약류중 효율적으로 경제적이며 향후 환경적 영향을 고려하여 발명한 시약 및 그 제조방법을 제공하는데 있다.Another object of the present invention is to provide a reagent which is economically efficient among various reagents which must be inevitably used in a wet treatment method for removing unburned carbon content in fly ash, and which has been invented in consideration of future environmental effects, and a method for producing the reagent.
상기와 같은 목적을 달성하기 위하여 본 발명에서는 미연탄소분이 10%이하되는 저품위 석탄회를 적당량 물과 함께 부유선별기 탱크내에서 혼합하여 광액의 농도를 25%고체되게 하고, 미연탄소분말을 포집-부유시킬 수 있는 발명시약을 적정량 투입하고, 부유선별기를 작동시키면 미연탄소분만 포집 부유되어 부유선별기 상부의 배출구로 배출-제거되고, 나머지 부유선별기 탱크내의 석탄회 광액을 농축-탈수-건조하면 미연탄소분이 0.5%이하 함유되는 고품위 정제석탄회 생산이 가능하도록 하였다.In order to achieve the above-mentioned object, the present invention provides a method for producing a coal fly ash, which comprises mixing a low-grade fly ash with an unburned carbon content of 10% or less in an airtight separator tank together with an appropriate amount of water to solidify the liquid at a concentration of 25% The amount of unburned carbon content is 0.5% when the coal ash concentrate in the remaining floating separator tank is concentrated, dehydrated and dried. When the amount of the inventive reagent is increased and the floating separator is operated, The production of high quality refined fly ash containing the following is made possible.
이때, 본 발명에서 개발한 시약의 제조물질은 단순히 일반 시중에서 판매되어 쉽게 구입할 수 있는 식용유 또는 폐식용유와 석유로서 배합비율은 식용유 45~72중량%과 석유 28~55중량%정도를 혼합하여 얻었으며, 제조시엔 상온에서 혼합하되 그 혼합은 통상의 교반기를 사용하여 3~10분동안 교반하여 시약을 효과적으로 제조하는 방법을 제공한다.At this time, the manufacturing material of the reagent developed in the present invention was obtained by mixing 45-72% by weight of cooking oil and 28-55% by weight of petroleum with mixing ratio of cooking oil or waste cooking oil and petroleum oil, And the mixture is mixed at room temperature at the time of preparation, and the mixture is stirred for 3 to 10 minutes using a conventional stirrer to provide a method for effectively producing a reagent.
다음은 본 발명에 의하여 제조된 시약을 실제로 활용하여 미연탄소분제거를 실시한 결과를 각 실시예별로 살펴보기로 한다.Hereinafter, results of unburned carbon fraction removal by actually utilizing the reagents prepared according to the present invention will be described for each example.
[실시예1][Example 1]
본 발명인 시약을 사용하여 미연탄소분제거를 위한 가장 적함한 혼합비를 얻기 위해 다음과 같은 실험을 행하였다. 먼저 시판용 식용유100gr에 석유를 40gr, 60gr, 80gr, 100gr, 120gr되게 각각 혼합비율로하여 시약을 만들었다. 미연탄소분이 10%이하 되는 저품위 석탄회로서 고정탄소분(F.C.)이 6~8%인 석탄회 500gr씩 7개의 시료룰 준비하였다. 이들 시료를 한가지씩 실험실용 부유선별기 셀(cell)에 넣고 물을 혼합하여 광액농도를 25%고체되게하여 각각 시약의 혼합 비율대로 준비된 시약을 각각 400gr/T 정도씩 선별기 셀(cell)내에 첨가하여 부유선별기를 작동한후, 미연탄소분만을 포집-부유시켜 제거하고 나머지 회수한 석탄회를 탈수-건조하여 최종 정제석탄회의 잔류된 고정탄소분을 분석한 결과를 다음 표 1에 나타내었다.The following experiment was conducted to obtain the optimum mixing ratio for removing unburned carbon content by using the reagent of the present invention. First, 100gr of commercial edible oil was mixed with 40gr, 60gr, 80gr, 100gr, and 120gr of petroleum, respectively. Seven specimens were prepared as low-grade fly ash with an unburned carbon content of 10% or less and 500 gr of fly ash with a fixed carbon fraction (F.C.) of 6-8%. Each of these samples was put into a cell suspending cell of a laboratory and mixed with water to make the concentration of the liquid 25% solid. Each of the reagents prepared according to the mixing ratios of the reagents was added into the cell of each selector at a rate of 400 gr / After operating the separator, unburned carbon powder was collected and suspended, and the remaining recovered coal fly ash was dehydrated-dried to analyze the remaining fixed carbon fraction of the final refined fly ash. The results are shown in Table 1 below.
표 1에 나타나 있는 바와같이 시약은 식용유 45~72중량%, 석유 28~55중량%범위내에서, 고정탄소분 함유량이 1.0%이하 산업용 규제치범위내에 있게 되므로 사용상 바람직하고, 또한 식용유의 경우 46중량%이하에서는 미연탄소분 제거율이 떨어지므로 사용상 바람직하지 않다.As shown in Table 1, the reagent is preferable for use because the fixed carbon content is within the range of the industrial regulation value within the range of 45 to 72% by weight of the cooking oil and 28 to 55% by weight of the petroleum, and 46% Hereinafter, the unburned carbon content removal rate is lowered, which is undesirable for use.
물론 이때 시약의 제조시 통상의 교반기내에 식용유와 석유를 함께 넣고 상온에서 3~10분정도 교반혼합하면 되는데, 그 이유는 3분이하에서는 혼합이 제대로 이루어지지 않고, 10분이상에서는 혼합율이 더 이상 향상되지 않기 때문이다.Of course, at the time of manufacturing the reagent, the cooking oil and the petroleum are put together in a usual stirrer and mixed at room temperature for about 3 to 10 minutes, because the mixing is not performed properly in 3 minutes and the mixing rate is further improved in 10 minutes It is not.
[실시예2][Example 2]
본 발명의 시약을 제조함에 있어 폐식용유 100gr에 석유 80gr을 혼합하여 시약을 맞들엇다. 미연탄소분이 10%이하 되는 저품위로서 고정탄소분(F.C.)이 6~8%인 석탄회 500gr씩 7개의 시료룰 취하여 이들 시료를 한가지씩 실험실용 부유선별기 셀(cell)에 넣고 물과 혼합하여 광액농도를 25%고체되게하여 각각 시약을 400gr/T 정도 첨가하여 부유선별기를 작동한후, 미연탄소분만을 포집-부유시켜 제거하고 나머지 회수한 석탄회를 탈수-건조하여 최종 정제석탄회의 잔류된 고정탄소분을 분석한 결과를 다음 표 2에 나타내었다.In the preparation of the reagent of the present invention, 80 grams of petroleum was mixed with 100 grams of waste cooking oil and the reagent was confronted. Seven specimens were taken from 500gr of coal fly ash with 6% to 8% of fixed carbon (FC) content of less than 10% of unburned carbon content. These specimens were put into each cell in a flotation cell of laboratory and mixed with water, % Solids, respectively. After running the flotation separator, the unburned carbon powder was collected and suspended, and the remaining recovered fly ash was dehydrated and dried to analyze the residual fixed carbon content of the final purified fly ash The results are shown in Table 2 below.
이 경우엔 표 2에 나타나 있는 바와같이 시약은 폐식용유 45~72중량%, 석유 28~55중량%범위내에서, 고정탄소분 함량이 1.0%이하 산업용 규제치 범위내에 있게 되므로 또한 폐식용유의 경우에도 46중량%이하에서는 미연탄소분제거율이 바람직하지 아니함을 알 수 있는데 이러한 제반결과를 실시예1에서와 유사함을 알 수 있다.In this case, as shown in Table 2, the reagent is in the range of 45 to 72% by weight of waste cooking oil and 28 to 55% by weight of petroleum, and the fixed carbon content is within the industrial regulation value of 1.0% or less. It can be seen that the unburned carbon content removal rate is not preferable at the weight percentages or less, and these results are similar to those in Example 1. [
또한 제조시에도 식용유와 유사하여 본 발명의 경우 식용유 또느 폐식용유 모두 활용이 가능함을 알수 있다.Also, it can be understood that both edible oil and waste edible oil can be utilized in the present invention similarly to edible oil at the time of manufacturing.
[비교예1][Comparative Example 1]
본 비교에는 일반적으로 널리 알려진 시약류들을 사용하여 얻은 결과로서 실시예1에서 사용한 것과 같은 시료500gr을 채취하여 실험실용 부유선별기 셀(cell)에 넣고 물과 적정량 혼합하여 광액의 농도가 25%고체 되게하고 종전에 부유선별방법에서 사용하던 시약중 광액의 수소이온 농도 조절제로서 탄산나트륨 500gr/T, 규산염 광물 억제제인 규산소다 500gr/T, 미연탄소분 포집제인 석유 400gr/T, 기포제인 메틸아이소 부틸카비놀 60gr/T정도를 단계별로 첨가한 후, 부유선별기를 작동하였다. 그리하여 석탄회중 미연탄소분이 포집-부유되어 제거되고, 나머지 셀내의 침하산물은 탈수-건조하여 최종 정제된 석탄회의 고정탄소분 잔류량을 분석한 결과를 다음 표-3에 나타내었다.500 g of the same sample as that used in Example 1 was taken as a result of using generally known reagents, and the mixture was put into a cell of a floating sorting laboratory and mixed with water in an appropriate amount to make the concentration of the optical solution 25% As a hydrogen ion concentration control agent, 500gr / T of sodium carbonate, 500gr / T of sodium silicate mineral salt inhibitor, 400gr / T of petroleum as an unburned carbon fraction collector, 60gr / m of methyl isobutylcarbinol as a foaming agent, T was added step by step, and then a floating separator was operated. The residual carbon content of the coal fly ash was collected and floated and removed, and the settlement product in the remaining cells was dehydrated-dried to analyze the residual amount of fixed carbon residue in the final purified coal fly ash.
표 3에 나타난 바와같이 시험결과 고정탄소분 함유량이 1.0%정도로서 산업용 규제치에는 해당하지 않으나 시약이 과다하게 소요되어 경제성이 없음을 알 수 있다.As shown in Table 3, the test result shows that the fixed carbon content is about 1.0%, which is not applicable to the industrial standard but is not economical due to excessive reagent.
[비교예2][Comparative Example 2]
본 비교에는 습식 석유응집법에 의한 미연탄소분의 제거를 위한 비교실험의 예로서 실시예1에서 사용한 것과 같은 시료500gr을 준비하여 종전에 개발된 석유 응집처리법에 의하여 중량기준으로 석탄회 : 석유 : 물을 1 : 3 : 20의 비율로 혼합하여 실험실용 부유선별기(cell)에 넣고, 부유선별기를 작동하여 미연탄소분만 포집-부유시켜 제거하고, 나머지 침하산물인 정제석탄회를 회수하여 고정탄소분 잔류량을 분석한 결과 표 4에 나타내었다.500 g of the same sample as that used in Example 1 was prepared as an example of a comparative experiment for removing unburned carbon content by the wet petroleum agglomeration method and the coal fly ash: : 3: 20 ratio, and placed in a laboratory flotation cell. A flotation separator was operated to collect and remove the unburned carbon contents, and the residual coal residue, which is the residual settlement product, was recovered and analyzed for residual carbon content Table 4 shows the results.
이때 고정탄소분함유량이 2.5%로서 산업용 규제치에 해당되어 활용할 수 없음을 알 수 있다.At this time, the fixed carbon content is 2.5%, which indicates that it can not be utilized because it corresponds to the industrial regulation value.
이상 살펴본 바와같이, 본 발명의 경우엔 식용유 또는 폐식용유와 석유를 일정비율로 혼합하여 얻어지는 시약성물을 제공하여, 미연탄소분의 습식선별방법에 응용하는 경우 적정량만 투입사용하게 되면 아주 간단하게 미연탄소분만을 포집-부유시켜 제거할 수 있으며 그 처리효율이 우수하고 정제석탄회의 생산성을 향상시킬 수 있는 장점과 함께, 제조방법에 있어서도 폐식용유와 석유를 이용하여 상온에서 교반혼합시켜 생산성이 가능하여 범용으로도 그리고 대량양산이 가능하여 경제적으로 활용있는 있는 등의 우수한 효과를 갖는다.As described above, in the case of the present invention, a reagent product obtained by mixing cooking oil or waste cooking oil with petroleum at a certain ratio is provided, and when applied to a wet screening method of unburned carbon content, It is possible to remove the milk by collecting and floating the milk, and it is possible to improve the productivity of refined fly ash by improving the treatment efficiency, and in the manufacturing method, it is possible to produce milk by stirring and mixing at room temperature using waste cooking oil and petroleum, And it is possible to mass-produce large quantities, which is advantageous in economical use.
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