KR100833345B1 - Combustion accelerating agent for solid fuel - Google Patents

Combustion accelerating agent for solid fuel Download PDF

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KR100833345B1
KR100833345B1 KR1020080002538A KR20080002538A KR100833345B1 KR 100833345 B1 KR100833345 B1 KR 100833345B1 KR 1020080002538 A KR1020080002538 A KR 1020080002538A KR 20080002538 A KR20080002538 A KR 20080002538A KR 100833345 B1 KR100833345 B1 KR 100833345B1
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combustion
solid fuel
mixture
weight
parts
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KR1020080002538A
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Korean (ko)
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김영환
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김영환
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    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00—Treating solid fuels to improve their combustion
    • C10L9/02—Treating solid fuels to improve their combustion by chemical means
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L9/00—Treating solid fuels to improve their combustion
    • C10L9/10—Treating solid fuels to improve their combustion by using additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2230/00—Function and purpose of a components of a fuel or the composition as a whole
    • C10L2230/04—Catalyst added to fuel stream to improve a reaction
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L2290/00—Fuel preparation or upgrading, processes or apparatus therefore, comprising specific process steps or apparatus units
    • C10L2290/18—Spraying or sprinkling

Abstract

A combustion accelerating agent is provided to accelerate complete combustion of the solid fuel and reduce the production of slag remarkably by adding the combustion accelerating agent into solid fuel. A combustion accelerating agent for solid fuel comprises: 100 weight parts of sodium silicate, 10 to 20 weight parts of calcium hydroxide, 5 to 15 weight parts of sodium hydroxide, 10 to 20 weight parts of glycerin, 10 to 20 weight parts of boracic acid, 1 to 5 weight parts of ammonia, 3 to 8 weight parts of bentonite, and 300 to 800 weight parts of water. The combustion accelerating agent for solid fuel is prepared by a preparation method comprising the steps of: sequentially adding calcium hydroxide, sodium silicate and boracic acid into sodium hydroxide, and agitating the mixture to obtain a first mixture; adding water, glycerin, and bentonite into the first mixture, and agitating the mixture to obtain a second mixture; and adding ammonia into the second mixture.

Description

고체연료 연소 촉진제{Combustion Accelerating Agent for Solid Fuel}Combustion Accelerating Agent for Solid Fuel

본 발명은 고체연료에 첨가되어 연소 효율을 높이고, 불완전 연소에 의해 생성되는 슬래그등을 감소시키는 고체연료 연소 촉진제에 관한 것이다. The present invention relates to a solid fuel combustion promoter which is added to solid fuel to increase combustion efficiency and to reduce slag and the like generated by incomplete combustion.

고체연료 특히 석탄류의 활발한 수요로 인해 대기오염, 산성비, 지구온난화등의 환경문제가 심각하게 대두되고 있으며, 이에 따라 화석연료의 사용에 교토 의정서와 같이 범세계적인 규제가 가해지고 있다. 이에 따라, 청정연료의 개발뿐만 아니라, 고체연료를 완전연소시켜 오염물질의 배출을 방지하고 열효율을 높여 사용량을 감소시킬 수 있는 연소촉진제에 대한 관심이 높아지고 있다. Due to the active demand for solid fuels, especially coal, environmental problems such as air pollution, acid rain, and global warming are seriously raised. Accordingly, global regulations such as the Kyoto Protocol are being applied to the use of fossil fuels. Accordingly, as well as the development of clean fuel, there is a growing interest in the combustion accelerator that can completely consume the solid fuel to prevent the discharge of pollutants and increase the thermal efficiency to reduce the amount of use.

연소첨가제에 대한 종래의 기술로, 대한민국 공개특허 제1966-0000794호에는 붕사와 염화나트륨 및 산화철을 혼합한 조성물로 구성된 매연 제거제가 공지되어 있어, 매연의 발생 감소와 연소로 내부의 침적물 억제효과를 가지는 기술이 공지되어 있다. 하지만 상기 특허에서는 염소가 발생하여 여전히 내부의 금속부식과 환경오염이 존재하고 있고 그 연소효율, 스케일의 발생 및 클링크 발생효율이 원하는 정도의 성능을 발휘하지 못한 단점이 있었다.As a conventional technique for a combustion additive, Korean Patent Publication No. 196-0000794 discloses a soot remover composed of a composition in which borax, sodium chloride and iron oxide are mixed, and thus has an effect of reducing soot generation and suppressing deposits inside the combustion furnace. Techniques are known. However, in the above patent, chlorine is generated, and there are still metal corrosion and environmental pollution inside, and its combustion efficiency, generation of scale, and generation of clink have not the desired performance.

대한민국 공개특허 제2004-22797호에는 글리세린, 아민계열안정제, 과산화수소, 수산화나트륨 및 붕사로 구성되는 슈트, 먼지, 크링크 및 스럿지 등의 물질을 제거하는 제거제가 공지되어 있고, 대한민국 공개특허 제2006-0081654호에는 과산화수소, 아민계 안정제, 붕사 및 수산화나트륨을 포함하여, 연료의 연소를 촉진하고 연료기관 내 불순물을 제거하여 열 전달을 증가시켜 열효율을 향상시킬 뿐만 아니라, 유해 배기가스의 방출을 저감시키는 연료용 첨가 조성물이 공지되어 있다. Korean Patent Laid-Open Publication No. 2004-22797 discloses a remover for removing substances such as chute, dust, clink and sludge composed of glycerin, amine-based stabilizer, hydrogen peroxide, sodium hydroxide and borax. 0081654 includes hydrogen peroxide, amine stabilizers, borax and sodium hydroxide, which promotes combustion of fuel and removes impurities in the fuel engine to increase heat transfer to improve thermal efficiency, as well as to reduce emissions of hazardous emissions. Additive compositions for fuels are known.

그러나 상술한 제거제 및 연료용 첨가 조성물은 부식성이 높은 수산화나트륨 및 아민계열의 안정제를 사용함으로써, 여전히 로의 수명과 연소시 발생하는 질소산화물의 발생을 충분히 억제하기가 어려운 점이 있었고, 과산화수소의 자연분해 현상에 의하여, 연소촉진제의 효능이 저하 되는 문제점이 있으며, 특히, 연소로 내벽에 발생하는 스케일이나 클링크의 발생을 감소시키는 것에는 여전히 한계가 있다.However, the above-mentioned remover and additive composition for fuel has a disadvantage in that it is still difficult to sufficiently suppress the lifetime of the furnace and the generation of nitrogen oxides generated during combustion by using highly corrosive sodium hydroxide and amine-based stabilizers. As a result, there is a problem that the efficacy of the combustion accelerator is lowered, and in particular, there is still a limit in reducing the generation of scale or clink generated on the inner wall of the combustion furnace.

대한민국 등록특허 제10-0485193호에는 붕사, 과산화수소, 트리에탄올아민, 산화아연, 이산화망간, 수용성폴리비닐알콜 및 음이온계 계면활성제로 구성된 연소 촉진재가 공지되어 있으나, 안정화제인 트리에탄올아민과 금속산화물인 산화아연, 이산화망간을 사용함으로 인하여, 매연 및 슬래그 발생은 어느정도 억제 할 수는 있으나, 그 조성상의 문제점으로 인해 연료의 연소 후 클링크가 로 벽면에 딱딱하게 고착되어 제거가 어려운 문제점이 있다.Korean Patent No. 10-0485193 discloses a combustion accelerator composed of borax, hydrogen peroxide, triethanolamine, zinc oxide, manganese dioxide, water-soluble polyvinyl alcohol and anionic surfactants, but stabilizers of triethanolamine and metal oxide zinc oxide, Due to the use of manganese dioxide, soot and slag generation can be suppressed to some extent, but due to its compositional problem, the clink is firmly fixed to the furnace wall after combustion of the fuel, making it difficult to remove.

상술한 문제점들을 해결하기 위한 본 발명의 목적은 고체연료에 첨가되어 완전연소를 촉진시켜 슬래그 생성을 획기적으로 감소시키는 연소촉진제를 제공하는 것이다. SUMMARY OF THE INVENTION An object of the present invention for solving the above problems is to provide a combustion accelerator which is added to solid fuel to promote complete combustion and drastically reduce slag production.

고체연료의 완전연소를 촉진시켜 슬래그 발생을 최소화하는 본 발명의 연소촉진제는 규산나트륨 100 중량부에 수산화칼슘 10 내지 20중량부, 수산화나트륨 5 내지 15중량부, 글리세린 10 내지 20중량부, 붕산 10 내지 20중량부, 암모니아 1 내지 5 중량부, 벤토나이트 3 내지 8 중량부, 및 물 300 내지 800 중량부를 함유하는 특징이 있다. Combustion accelerator of the present invention that promotes complete combustion of solid fuel to minimize slag generation, 10 to 20 parts by weight of calcium hydroxide, 5 to 15 parts by weight of sodium hydroxide, 10 to 20 parts by weight of glycerin, and 10 to boric acid to 100 parts by weight of sodium silicate 20 parts by weight, 1 to 5 parts by weight of ammonia, 3 to 8 parts by weight of bentonite, and 300 to 800 parts by weight of water.

상기 규산나트륨 및 붕산은 고체연료의 초기 착화를 용이하게 하며, 고체연료의 연소 시 산소를 발생하여 연소를 촉진시키고 연소 온도를 상승시켜 완전 연소를 유도한다. 또한 불완전 연소로 발생하는 일산화탄소, 황산화물, 질소산화물 가스의 완전 산화를 유도하여 유독 가스의 발생을 억제한다.The sodium silicate and boric acid facilitate the initial ignition of the solid fuel, generate oxygen upon combustion of the solid fuel to promote combustion and raise the combustion temperature to induce complete combustion. In addition, by inducing the complete oxidation of carbon monoxide, sulfur oxides, nitrogen oxide gas generated by incomplete combustion to suppress the generation of toxic gases.

상기 글리세린 및 암모니아는 수산화칼슘, 수산화나트륨, 붕산 및 벤토나이트를 물에 혼합하였을 때, 균질하며 안정적인 혼합물을 얻을 수 있게 하며, 제조된 연소 촉진제가 성질의 변화 없이 장시간 보관 가능하게 한다. When glycerin and ammonia are mixed with calcium hydroxide, sodium hydroxide, boric acid, and bentonite in water, a homogeneous and stable mixture can be obtained, and the produced combustion promoter can be stored for a long time without any change in properties.

상기 수산화칼슘, 수산화나트륨 및 벤토나이트는 상기 고체연료의 착화를 용이하게 하며, 불완전 연소에 의해 발생하는 가스 및 회분과 결합하여 매연을 억제하고 연소를 용이하게 한다.The calcium hydroxide, sodium hydroxide and bentonite facilitate the ignition of the solid fuel and combine with gas and ash generated by incomplete combustion to suppress soot and facilitate combustion.

본 발명의 고체연료 연소촉진제는 도 1에 도시한 바와 같이 수산화나트륨에 수산화칼슘, 규산나트륨 및 붕산을 순차적으로 첨가하고 30분 내지 2시간 동안 교반하여 혼합물을 얻은 후 상기 혼합물에 물, 글리세린 및 벤토나이트를 첨가하고 다시 10분 내지 1시간 동안 교반한 후 암모니아를 첨가하여 제조된다. Solid fuel combustion promoter of the present invention is added to the calcium hydroxide, sodium silicate and boric acid sequentially to sodium hydroxide as shown in Figure 1 and stirred for 30 minutes to 2 hours to obtain a mixture, water, glycerin and bentonite in the mixture It is prepared by adding and stirring for another 10 minutes to 1 hour and then adding ammonia.

규산나트륨 100 중량부에 수산화칼슘 10 내지 20중량부, 수산화나트륨 5 내지 15중량부, 글리세린 10 내지 20중량부, 붕산 10 내지 20중량부, 암모니아 1 내지 5 중량부, 벤토나이트 3 내지 8 중량부, 및 물 300 내지 800 중량부를 함유하는 본 발명의 고체연료 연소촉진제는 고체연료의 착화를 용이하게 하며, 고온에서 산소를 발생하여 완전 연소를 유도하고, 연소 온도를 상승시키며 슬래그 발생을 최소화 시키며, 침전이 방지되고, 고르게 분산되며, 장기간 보관시에도 높은 안정성을 갖도록 최적화된 물질 및 혼합비이다. 10 to 20 parts by weight of calcium hydroxide, 5 to 15 parts by weight of sodium hydroxide, 10 to 20 parts by weight of glycerin, 10 to 20 parts by weight of boric acid, 1 to 5 parts by weight of ammonia, 3 to 8 parts by weight of bentonite, and The solid fuel combustion promoter of the present invention containing 300 to 800 parts by weight of water facilitates the ignition of the solid fuel, generates oxygen at high temperature, induces complete combustion, raises the combustion temperature, minimizes the occurrence of slag, and precipitates It is a material and mixing ratio which is prevented, evenly distributed and optimized to have high stability even for long term storage.

상기 규산나트륨은 메타규산나트륨, 오트토규산나트륨, 이규산나트륨 또는 이들의 혼합물이며, 메타규산나트륨 또는 오트토규산나트륨인 것이 바람직하다.The sodium silicate is sodium metasilicate, sodium orthosilicate, sodium disilicate or mixtures thereof, preferably sodium metasilicate or sodium otrasilicate.

상기 붕산은 오르토붕산, 메타붕산, 사붕산 또는 이들의 혼합물이며, 오르토붕산인 것이 바람직하다. The boric acid is orthoboric acid, metaboric acid, tetraboric acid or a mixture thereof, and is preferably orthoboric acid.

고체연료에 혼합되는 상기 연소촉진제의 양은 고체연료의 종류, 연소 장치의 종류에 따라 적화되어야 하나, 통상적으로 석탄과 같은 고체연료의 연소 시 고체 연료 100 중량부에 대하여 0.01 내지 0.2 중량부가 혼합되는 것이 바람직하다. 상기 혼합은 고체 연료를 연소 장치로 이송하는 이송 단계, 또는 연소 장치 내부에 스프레이등의 통상적인 수단을 사용하여 상기 연소촉진제를 고체연료에 분산하는 것일 수 있다. The amount of the combustion promoter to be mixed with the solid fuel should be matched according to the type of the solid fuel and the type of the combustion apparatus, but it is usually that 0.01 to 0.2 parts by weight based on 100 parts by weight of the solid fuel when the solid fuel such as coal is burned desirable. The mixing may be to transfer the solid fuel to the combustion device, or to disperse the combustion promoter in the solid fuel using conventional means such as spraying inside the combustion device.

본 발명의 고체연료 연소촉진제는 고체연료에 첨가되어 고체연료의 연소를 보다 용이하게 이루어지게 하며, 연소 온도를 높이고, 완전연소를 유도하는 장점이 있으며, 이에 의해 슬래그 및 불완전 연소에 의해 생성되는 유독 가스가 획기적으로 감소되며, 분진 및 회분 또한 크게 감소되는 장점이 있다.Solid fuel combustion promoter of the present invention is added to the solid fuel to make the combustion of the solid fuel more easily, has the advantage of increasing the combustion temperature, inducing complete combustion, thereby toxic generated by slag and incomplete combustion Gas is dramatically reduced, dust and ash also has the advantage that it is greatly reduced.

(제조예 1)(Manufacture example 1)

수산화나트륨 0.6Kg에 수산화칼슘 0.8Kg, 규산나트륨 5.9Kg 및 붕산 1Kg을 순차적으로 첨가하고 1 동안 교반한 후, 물 40Kg, 글리세린 1Kg 및 벤토나이트 0.3Kg을 첨가하고 다시 30분 동안 교반한 후 암모니아 0.2Kg을 첨가하여 연소촉진제를 제조하였다. 0.8Kg of calcium hydroxide, 5.9Kg of sodium silicate and 1Kg of boric acid were sequentially added to 0.6Kg of sodium hydroxide and stirred for 1 hour, followed by adding 40Kg of water, 1Kg of glycerin and 0.3Kg of bentonite, followed by stirring for 30 minutes, followed by 0.2Kg of ammonia. Was added to prepare a combustion accelerator.

(실시예 1)(Example 1)

석탄을 연료로 사용하는 연소로에 투입되는 석탄을 이송하는 컨베이어벨트 상부에서 스프레이 노즐을 이용하여 제조예 1에서 제조된 연소촉진제가 석탄 1 톤당 1Kg의 양으로 연속적으로 분사하였다. The combustion promoter prepared in Preparation Example 1 was continuously sprayed in an amount of 1 kg per ton of coal by using a spray nozzle on the conveyor belt to transfer coal input to a combustion furnace using coal as fuel.

본 발명의 연소촉진제를 분사하지 않은 경우와 비교하여, 연소로에서 투명한 배출 가스가 배출되어 방염이 감소됨을 알 수 있었으며, 배출되는 배출 가스에서 일산화탄소가 약 60% 이상 감소되었고, SOx 및 NOx도 약 20% 이상 감소되었다. 또한 분진 및 회분의 발생도 약 70% 이상 감소되었다. As compared with the case not injecting the combustion promoter of the present invention, is a transparent exhaust gas from the furnace discharge was flame is found to decrease, was a carbon monoxide reduced by at least about 60% in the exhaust gas discharged, SO x and NO x The degree was reduced by more than about 20%. The incidence of dust and ash was also reduced by more than 70%.

본 발명의 연소촉진제를 분사하여 1주일 동안 연속 사용시, 본 발명의 연소촉진제를 분사하지 않은 경우와 비교하여, 슬래그 발생량이 약 80% 이상 감소되었으며, 연소효율이 평균적으로 7% 이상 증가하였다.In continuous use for one week by injecting the combustion promoter of the present invention, the slag generation amount was reduced by about 80% or more, and the combustion efficiency increased by 7% or more on average compared with the case where the combustion promoter of the present invention was not injected.

이상과 같이 본 발명에서는 한정된 실시예 및 도면에 의해 설명되었으나 이는 본 발명의 보다 전반적인 이해를 돕기 위해서 제공된 것일 뿐, 본 발명은 상기의 실시예에 한정되는 것은 아니며, 본 발명이 속하는 분야에서 통상의 지식을 가진 자라면 이러한 기재로부터 다양한 수정 및 변형이 가능하다. In the present invention as described above has been described by the limited embodiment and the drawings, but this is provided only to help a more general understanding of the present invention, the present invention is not limited to the above embodiments, it is common in the field of the present invention Those skilled in the art can make various modifications and variations from this description.

따라서, 본 발명의 사상은 설명된 실시예에 국한되어 정해져서는 아니되며, 후술하는 특허청구범위뿐 아니라 이 특허청구범위와 균등하거나 등가적 변형이 있는 모든 것들은 본 발명 사상의 범주에 속한다고 할 것이다.Therefore, the spirit of the present invention should not be limited to the described embodiments, and all the things that are equivalent to or equivalent to the claims as well as the following claims will belong to the scope of the present invention. .

도 1은 본 발명의 고체연료 연소촉진제를 제조하는 방법을 도시한 일예이다.Figure 1 is an example showing a method for producing a solid fuel combustion promoter of the present invention.

Claims (2)

규산나트륨 100 중량부에 수산화칼슘 10 내지 20중량부, 수산화나트륨 5 내지 15중량부, 글리세린 10 내지 20중량부, 붕산 10 내지 20중량부, 암모니아 1 내지 5 중량부, 벤토나이트 3 내지 8 중량부, 및 물 300 내지 800 중량부를 함유하는 고체연료 연소촉진제.10 to 20 parts by weight of calcium hydroxide, 5 to 15 parts by weight of sodium hydroxide, 10 to 20 parts by weight of glycerin, 10 to 20 parts by weight of boric acid, 1 to 5 parts by weight of ammonia, 3 to 8 parts by weight of bentonite, and Solid fuel combustion accelerator containing 300 to 800 parts by weight of water. 제 1항에 있어서, The method of claim 1, 상기 고체연료 연소촉진제는The solid fuel combustion promoter 수산화나트륨에 수산화칼슘, 규산나트륨 및 붕산을 순차적으로 첨가한 후 교반하여 제 1 혼합물을 얻는 단계;Sequentially adding calcium hydroxide, sodium silicate and boric acid to sodium hydroxide, followed by stirring to obtain a first mixture; 상기 제 1 혼합물에 물, 글리세린 및 벤토나이트를 첨가한 후 교반하여 제 2 혼합물을 얻는 단계; 및Adding water, glycerin and bentonite to the first mixture, followed by stirring to obtain a second mixture; And 상기 제 2 혼합물에 암모니아를 첨가하는 단계;Adding ammonia to the second mixture; 를 포함하여 제조되는 것을 특징으로 하는 고체연료 연소촉진제.Solid fuel combustion promoter characterized in that it is prepared to include.
KR1020080002538A 2008-01-09 2008-01-09 Combustion accelerating agent for solid fuel KR100833345B1 (en)

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KR101573862B1 (en) 2014-08-19 2015-12-02 부산대학교 산학협력단 Hybrid Charcoal for Carbon Monoxide Reduction and Method for Manufacturing the Same
KR101696398B1 (en) * 2015-09-07 2017-01-13 김봉민 Fuel additive composition
KR101836047B1 (en) * 2017-09-18 2018-03-08 이철 Desulfurization system using a catalyst for desulfurization
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KR100761065B1 (en) 2006-06-09 2007-10-04 오미혜 Composition of additive for fuel

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KR20030062023A (en) * 2002-01-15 2003-07-23 홍순희 Compound of additive for liquid fuel
US20060218853A1 (en) 2003-05-10 2006-10-05 Mi-Hye Oh Composition for preventing scaling, excluding of soot, clinker and sludge, and controlling flame in combustion apparatus
KR100761065B1 (en) 2006-06-09 2007-10-04 오미혜 Composition of additive for fuel

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100908494B1 (en) * 2007-07-30 2009-07-21 이피캠텍 주식회사 Fuel additive composition
KR101573862B1 (en) 2014-08-19 2015-12-02 부산대학교 산학협력단 Hybrid Charcoal for Carbon Monoxide Reduction and Method for Manufacturing the Same
KR101696398B1 (en) * 2015-09-07 2017-01-13 김봉민 Fuel additive composition
KR101836047B1 (en) * 2017-09-18 2018-03-08 이철 Desulfurization system using a catalyst for desulfurization
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KR102171528B1 (en) * 2020-04-27 2020-10-29 주식회사 대양환경기술 process of adictive

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