Process for controlling the emission of flue gases

25-08-2015 дата публикации

Номер:

US9114360B2

Автор: SASSON YOEL, SACHS TATYANA, DVASH EFFI, BARNEA ZACH

Принадлежит: YISSUM RES DEV CO, YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREWUNIVERSITY OF JERUSALEM LTD, YISSUM RESEARCH DEVELOPMENT COMPANY OF THE HEBREWUNIVERSITY OF JERUSALEM LTD.

Контакты:

Номер заявки: 37-14-20134412

Дата заявки: 31-01-2013

Provided is a process for controlling heavy metal (e.g., mercury) emission in SO2-containing flue gas, comprising passing a stream of the flue gas (2) through a wet scrubber (1) where it is brought into contact with a liquid absorbent (8) comprising an ionic liquid, an oxidizer (11) and polar protic organic solvent, wherein the amount of said organic solvent is adjusted such that the SO2 absorption is minimized while operating said wet scrubber at a temperature lower than the normal working temperature that would be used in the absence of said solvent. The process may be preceded by an initial stage where a fluoride-containing liquid is used for reducing the amount of sulfur dioxide in the flue gas stream; the sulfur dioxide can be subsequently desorbed from the fluoride-containing liquid upon the addition of a polar solvent.

CPC - классификация

B B0 B01 B01D B01D2 B01D22 B01D225 B01D2251 B01D2251/B01D2251/1 B01D2251/10 B01D2251/108 B01D2252 B01D2252/B01D2252/2 B01D2252/20 B01D2252/202 B01D2252/205 B01D2252/3 B01D2252/30 B01D2257 B01D2257/B01D2257/3 B01D2257/30 B01D2257/302 B01D2257/6 B01D2257/60 B01D2257/602 B01D2258 B01D2258/B01D2258/0 B01D2258/02 B01D2258/028 B01D2258/0283 B01D5 B01D53 B01D53/B01D53/1 B01D53/14 B01D53/142 B01D53/1425 B01D53/148 B01D53/1481 B01D53/149 B01D53/1493 B01D53/5 B01D53/50 B01D53/507 B01D53/6 B01D53/64

IPC - классификация

B B0 B01 B01D B01D5 B01D51 B01D51/B01D51/0 B01D51/00 B01D53 B01D53/B01D53/1 B01D53/14 B01D53/5 B01D53/50 B01D53/6 B01D53/64

Цитирование НПИ

Bull. Korean Chem. Soc. , vol. 31, No. 7, pp. 1937-1940 (2010).
International Search Report for PCT/IL2013/000009 mailed Jul. 19, 2013.
Jerman et al., "Ionic Conducivity, Infarared and Raman Spectroscopic Studies of 1-methyl-3-propylimidazolium Iodide Ionic Liquid and Added Iodine", Electrochimica Acta, vol. 53, No. 5, Dec. 24, 2007, pp. 2281-2288.
Jerman et al., "Ionic Conducivity, Infarared and Raman Spectroscopic Studies of methyl-3-propylimidazolium Iodide Ionic Liquid and Added Iodine", Electrochimica Acta, vol. 53, No. 5, Dec. 24, 2007, pp. 2281-2288.
K. Lee et al., "Effects of Halide Anions to Absorb SO2 in Ionic Liquids", Bull. Korean Chem. Soc., vol. 31, No. 7, pp. 1937-1940 (2010).
K.Y. Lee et al., "Use of Ionic Liquids as Absorbents to Separate SO2 in SO2/O2 in Thermochemical Processes to Produce Hydrogen", Int. J. of Hydrogen Energy, 33, p. 6031-36 (2008).
K.Y. Lee et al: Int. J. of Hydrogen Energy, 33, p. 6031-36 (2008).
L. Ji et al., "Pyrrolidinium Imides: Promising Ionic Liquids for Direct Capture of Elemental Mercury from Flue Gas", Water, Air & Soil Pollution, vol. 8, No. 3-4, Nov. 10, 2007, pp. 349-358.
L. Ji et al., "Room Temperature Ionic Liquids for Mercury Capture from Flue Gas", Industrial & Engineering Chemistry Research, Am. Chem. Soc, vol. 47, No. 21, Jan. 1, 2008, pp. 8396-8400.
Prasad et al., "Explaining the Differential Solubility of Flue Gas Components in Ionic Liquids from First-Principle Calculations", J. Phys. Chem B. 113, pp. 4739-4743 (2009).
Prasad et al: J. Phys. Chem B. 113, pp. 4739-4743 (2009).
Written Opinion of the International Searching Authority for PCT/IL/2000009 mailed Jul. 19, 2013.
Written Opinion of the International Searching Authority mailed Jul. 19, 2013.

Получить PDF