Combustion process for the reduction of particulates in combustion fumes
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F23J-007/00
C10L-010/02
C10L-001/12
C10L-010/00
C10L-010/04
F23C-009/00
F23C-099/00
F23G-005/02
F23L-007/00
출원번호
US-0744591
(2008-11-27)
등록번호
US-9562205
(2017-02-07)
우선권정보
IT-MI2007A2291 (2007-12-06)
국제출원번호
PCT/EP2008/010054
(2008-11-27)
§371/§102 date
20100525
(20100525)
국제공개번호
WO2009/071230
(2009-06-11)
발명자
/ 주소
Malavasi, Massimo
Di Salvia, Grazia
Rossetti, Edoardo
출원인 / 주소
ITEA S.P.A.
대리인 / 주소
Arent Fox LLP
인용정보
피인용 횟수 :
0인용 특허 :
21
초록▼
A combustion process wherein a fuel, a comburent and component A) are fed to a combustor, component A), comprising low-melting salts and/or oxides having a melting temperature ≦1,450 K, the ratio by moles A′/(A″−A′)≧0.01, being: A′ the sum by moles between the amount of metals, under the form of low
A combustion process wherein a fuel, a comburent and component A) are fed to a combustor, component A), comprising low-melting salts and/or oxides having a melting temperature ≦1,450 K, the ratio by moles A′/(A″−A′)≧0.01, being: A′ the sum by moles between the amount of metals, under the form of low-melting salts and/or low-melting oxides present in the component A) and the amount of metals under the form of the low-melting salts and/or low-melting oxides or their low-melting mixtures, contained in the fuel, A″ is the sum of the amount of all the metals contained in the fuel and of those contained in component A), in which the combustor is isothermal type and flameless.
대표청구항▼
1. A combustion process for removing particle size diameter lower than 2.5 μm (PM 2.5) to values lower than 50 μm/Nm3 from combustion fumes wherein a fuel, a comburent, optionally premixed with recycling fumes, and component A) are fed to a combustor, component A) comprising low-melting salts and/or
1. A combustion process for removing particle size diameter lower than 2.5 μm (PM 2.5) to values lower than 50 μm/Nm3 from combustion fumes wherein a fuel, a comburent, optionally premixed with recycling fumes, and component A) are fed to a combustor, component A) comprising low-melting salts and/or oxides and/or mixtures thereof having a melting temperature, comprising a melting point 0.01, being: A′ the sum by moles between an amount of metals, under the form of low-melting salts and/or oxides and/or mixtures thereof present in the component A) and an amount of metals under the form of the low-melting salts and/or oxides or mixtures thereof contained in the fuel,A″ is the sum of the amount of all the metals contained in the fuel and of those contained in component A),in whichthe combustor is isothermal type and flameless,wherein the comburent is oxygen and is used in molar excess with respect to a stoichiometric amount for combustion reaction with the fuel, wherein the titre of oxygen is at least 70% by volume, the complement to 100% being formed of inert gases and/or nitrogen;wherein metals present in the fuel and in component A) remain under a liquid state in the combustor and are removed from a bottom of the combustor; andwherein the pressure in the combustor is higher than the atmospheric pressure and up to 2,000 kPa and the temperature is comprised between 1,500 K (1,223° C.) and up to 2,100 K (1,827° C.). 2. A process according to claim 1, wherein the ratio by moles A′/(A″−A′) is at least 0.1. 3. A process according to claim 1, wherein the combustion gases at the combustor outlet are cooled at a temperature equal to or lower than 1,100 K. 4. A process according to claim 1, wherein as component A) a mixture having melting temperature 0.01, being: A′ the sum by moles between an amount of metals, under the form of low-melting salts and/or oxides and/or mixtures thereof present in the component A) and an amount of metals under the form of the low-melting salts and/or oxides or mixtures thereof contained in the fuel,A″ is the sum of the amount of all the metals contained in the fuel and of those contained in component A),in whichthe combustor is isothermal type and flameless,wherein the comburent is oxygen and is used in molar excess with respect to a stoichiometric amount for combustion reaction with the fuel, wherein the titre of oxygen is at least 70% by volume, the complement to 100% being formed of inert gases and/or nitrogen;wherein metals present in the fuel and in component A) remain under a liquid state in the combustor and are removed from a bottom of the combustor;wherein the pressure in the combustor is higher than the atmospheric pressure and up to 2,000 kPa and the temperature is comprised between 1,500 K (1,223° C.) and up to 2,100 K (1,827° C.); andwherein a concentration of the PM 2.5 is lower than 50 μg/Nm3. 11. A process according to claim 2, wherein the ratio by moles A′/(A″−A′) is at least 0.2. 12. A process according to claim 1, comprising: removing particles having particle size diameter lower than 2.5 μm (PM 2.5) from the combustion fumes.
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이 특허에 인용된 특허 (21)
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van Gelder Kees (Amsterdam NLX) Visser Rene M. (Amsterdam NLX) Werner Jan (Amsterdam NLX), Composition and process for the removal of impurities from combustion gases.
Oakes Eric J. (Del Mar CA) Lee Yam Y. (San Diego CA) Hiltunen Matti A. (Karhula FIX), Reducing N2O emissions when burning nitrogen-containing fuels in fluidized bed reactors.
Myers John G. (Pittsburgh PA) Logan Douglas P. (Coraopolis PA) Walker Jerry L. (Coraopolis PA), Residual fuel oil conditioners containing metal salts in aqueous solution.
Najjar Mitri S. (Hopewell Junction NY) Yaghmaie Farrokh (Hopewell Junction NY) Sorell Louis S. (Fishkill NY), Stable aqueous suspensions of slag, fly-ash and char.
Brown, Melvin H.; DeYoung, David H., Three-stage process for burning fuel containing sulfur to reduce emission of particulates and sulfur-containing gases.
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