Regeneration of iron-based hydrogen sulfide sorbents
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C10G-025/00
C10G-025/12
C10G-045/60
출원번호
US-0620796
(2000-07-21)
발명자
/ 주소
Chen, Jingguang G.
Brown, Leo D.
Baird, Jr., William C.
McVicker, Gary B.
Ellis, Edward S.
Touvelle, Michele S.
Klein, Darryl P.
Vaughan, David E. W.
출원인 / 주소
ExxonMobil Research & Engineering Company
대리인 / 주소
Hughes, Gerard J.
인용정보
피인용 횟수 :
7인용 특허 :
15
초록▼
A process to regenerate iron-based hydrogen sulfide sorbents using steam. The steam is preferably mixed with hydrogen-containing gas and/or an inert gas, such as nitrogen. In a preferred embodiment, the sorbent is first exposed to the steam and then exposed to a hydrogen-containing gas at regenerati
A process to regenerate iron-based hydrogen sulfide sorbents using steam. The steam is preferably mixed with hydrogen-containing gas and/or an inert gas, such as nitrogen. In a preferred embodiment, the sorbent is first exposed to the steam and then exposed to a hydrogen-containing gas at regeneration conditions.
대표청구항▼
A process to regenerate iron-based hydrogen sulfide sorbents using steam. The steam is preferably mixed with hydrogen-containing gas and/or an inert gas, such as nitrogen. In a preferred embodiment, the sorbent is first exposed to the steam and then exposed to a hydrogen-containing gas at regenerati
A process to regenerate iron-based hydrogen sulfide sorbents using steam. The steam is preferably mixed with hydrogen-containing gas and/or an inert gas, such as nitrogen. In a preferred embodiment, the sorbent is first exposed to the steam and then exposed to a hydrogen-containing gas at regeneration conditions. han 5 &mgr;m; and(ii) comprise at least one substance selected from the group consisting of phosphates that contain at least one type of divalent or trivalent metal cations; and(I.B) as adhesion-promoting component, at least one selection from the group consisting of the following subgroups:(1) monosaccharides, polysaccharides, and derivatives thereof;(2) phosphorus containing solutes selected from the group consisting of orthophosphoric acid, condensed phosphoric acids, and organophosphonic acid compounds;(3) water-soluble polymers that are homopolymers or copolymers of vinyl acetate and derivatives of these homopolymers and copolymers; and(4) copolymers and polymers afforded by the polymerization of:(a) at least one selection from:monomers, exclusive of vinyl acetate, that conform to general chemical formula: where R1=H or CH3and R2=H, C1to C5alkyl, or C1to C5hydroxyalkyl; andother α, ß-unsaturated carboxylic acid monomers; and, optionally,(b) not more than 50% by weight of monomers that are not vinyl acetate and are not within the description of part (a) immediately above but are copolymerizable with said monomers that are within the description of said part (a); and(II) contacting the metal substrate surface as conditioned in operation (I) as described above with a nickel-free phosphate conversion treatment bath that comprises water and the following amounts of the following components:(II.A) from 0.5 to 5 g/l of zinc cations;(II.B) from 5 to 30 g/l of phosphate ions; and(II.C) a component of conversion accelerator.2. A process according to claim 1, wherein the phosphate conversion treatment bath also contains from 0.1 to 3.0 g/l of at least one type of ions selected from the group consisting of magnesium ions, cobalt ions, manganese ions, calcium ions, tungstate ions, and strontium ions.3. A process according to claim 2, wherein the concentration of component (1.A) is from 0.001 to 30 g/l and the concentration of component (1.B) is form 1 to 2,000 ppm.4. A process according to claim 1, wherein the concentration of component (1.A) is from 0.001 to 30 g/l and the concentration of component (1.B) is from 1 to 2,000 ppm.5. The process of claim 1 wherein the divalent or trivalent metal cations are selected from the group consisting of Zn, Fe, Mn, Co, Ca, Mg and Al.6. The process of claim 1 wherein the aqueous liquid surface conditioning composition has a concentration of dispersed solid phosphate particles of from 0.001 to 30 g/l.7. The process of claim 1 wherein the aqueous liquid surface conditioning composition has a concentration of adhesion-promoting component of from 1 to 2000 ppm.8. The process of claim 1 wherein the aqueous liquid surface conditioning composition is additionally comprised of an alkali metal or ammonium salt selected from the group consisting of orthophosphate salts, metaphosphate salts, orthosilicate salts, metasilicate salts, carbonate salts, bicarbonate salts, nitrate salts, nitrite salts, sulfate salts, borate salts, organic acid salts and mixtures thereof.9. The process of claim 1 wherein the nickel-free phosphate conversion treatment bath is additionally comprised of an etchant selected from the group consisting of fluoride ions, complex fluoride ions, and mixtures thereof.10. The process of claim 1 wherein the metal substrate is selected from the group consisting of steel sheets, zinc-plated steel sheets, zinc alloy-plated steel sheets, magnesium alloys, and aluminum alloys.
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이 특허에 인용된 특허 (15)
Russ Michael B. (Villa Park IL) Whitsura Frank R. (Schaumburg IL) Peer Roger L. (LaGrange IL) Zmich Joseph (Hanover Park IL) Low Chi-Chu D. (Lisle IL), Catalytic reforming process with sulfur preclusion.
O\Keefe Luke F. (White Plains NY) Volles Warren (Mt. Kisco NY) Zarchy Andrew S. (Amawalk NY), Chemical processing with an operational step sensitive to a feedstream component.
Flytani-Stephanopoulos Maria (Pasadena CA) Gavalas George R. (Altadena CA) Tamhankar Satish S. (Scotch Plains NJ), High temperature regenerative H2S sorbents.
Pillai Krishnan J. (Aurora IL) Connelly Lawrence J. (Oak Lawn IL) Gustafson William K. (Sandy UT), Method of dewatering a wet process phosphoric acid slurry.
Jalan Vinod M. (Concord MA) Frost David G. (Maynard MA), Method of removing hydrogen sulfide from gases utilizing a zinc oxide sorbent and regenerating the sorbent.
Field Leslie A. (811 Wayside Rd. Portola Valley CA 94028) Hall Ann Marie K. (1727 Mt. Baker Hwy. Bellingham WA 98226) Robinson Richard C. (1987 Las Gallinas Ave. San Rafael CA 94903) Jacobson Robert , Sulfur removal systems for protection of reforming catalysts.
Robinson Richard C. (San Rafael CA) Jacobson Robert L. (Vallejo CA) Kluksdahl Harris E. (San Rafael CA) Blanton William A. (Woodacre CA) Holtermann Dennis L. (Crockett CA) Field Leslie A. (Portola Va, Sulfur removal systems for protection of reforming crystals.
Iyer, Mahesh V.; Fan, Liang-Shih; Ramkumar, Shwetha, High purity, high pressure hydrogen production with in-situ COand sulfur capture in a single stage reactor.
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