Passivation of coker furnaces using combined mechanical and chemical means
US-2026055320-A1 · Feb 26, 2026 · US
US10407620B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10407620-B2 |
| Application number | US-201715805805-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 7, 2017 |
| Priority date | Dec 22, 2010 |
| Publication date | Sep 10, 2019 |
| Grant date | Sep 10, 2019 |
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A reactor having an inner surface accessible to the hydrocarbon and providing a sintered product of at least one of cerium oxide, zinc oxide, tin oxide, zirconium oxide, boehmite and silicon dioxide, and a perovskite material of formula A a B b C c D d O 3−δ . 0<a<1.2, 0≤b≤1.2, 0.9<a+b≤1.2, 0<c<1.2, 0≤d≤1.2, 0.9<c+d≤1.2, −0.5<δ<0.5, wherein A is selected from calcium, strontium, barium, and any combination thereof; B is selected from lithium, sodium, potassium, rubidium, and any combination thereof; C is selected from cerium, zirconium, antimony, praseodymium, titanium, chromium, manganese, ferrum, cobalt, nickel, gallium, tin, terbium and any combination thereof; and D is selected from lanthanum, cerium, praseodymium, neodymium, promethium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium, lutetium, scandium, titanium, vanadium, chromium, manganese, ferrum, cobalt, nickel, copper, zinc, yttrium, zirconium, niobium, molybdenum, technetium, ruthenium, rhodium, palladium, silver, cadmium, hafnium, tantalum, tungsten, rhenium, osmium, iridium, platinum, gold, gallium, indium, tin, antimony and any combination thereof.
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The invention claimed is: 1. A method for cracking hydrocarbon, comprising: providing steam and hydrocarbon, wherein said hydrocarbon is an ethane containing feedstock; and feeding steam and hydrocarbon into a reactor having an inner surface accessible to hydrocarbon, the inner surface comprising a sintered product of a perovskite material of formula AaBbCcDdO3−δ and an inorganic material, wherein the inorganic material comprises at least one of cerium oxide, zinc oxide, tin oxide, zirconium oxide, boehmite and silicon dioxide; 0<a<1.2, 0≤b≤1.2, 0.9<a+b≤1.2, 0<c<1.2, 0≤d≤1.2, 0.9<c+d≤1.2, −0.5<δ<0.5; A is selected from calcium (Ca), strontium (Sr), barium (Ba), and any combination thereof; B is selected from lithium (Li), sodium (Na), potassium (K), rubidium (Rb) and any combination thereof; C is selected from cerium (Ce), zirconium (Zr), antimony (Sb), praseodymium (Pr), titanium (Ti), chromium (Cr), manganese (Mn), ferrum (Fe), cobalt (Co), nickel (Ni), gallium (Ga), tin (Sn), terbium (Tb) and any combination thereof; and D is selected from lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), ferrum (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), yttrium (Y), zirconium (Zr), niobium (Nb), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), cadmium (Cd), hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), gold (Au), gallium (Ga), indium (In), tin (Sn), antimony (Sb) and any combination thereof, said method further comprising heating said steam and said hydrocarbon at a temperature of from about 480° C. to about 1,000° C. in order to form ethylene, wherein the perovskite material is selected from SrCeO 3 , SrZr 0.3 Ce 0.7 O 3 , BaMnO 3 , BaCeO 3 , and BaZr 0.3 Ce 0.7 O 3 , BaZr 0.3 Ce 0.5 Y 0.2 O 3 , BaZr 0.1 Ce 0.7 Y 0.2 O 3 , BaZrO 3 , BaZr 0.7 Ce 0.3 O 3 , BaCe 0.5 Zr 0.5 O 3 , BaCe 0.9 Y 0.1 O 3 , BaCe 0.85 Y 0.15 O 3 , and BaCe 0.5 Y 0.2 O 3 . 2. The method of claim 1 , wherein the sintered product comprises BaZr 0.3 Ce 0.7 O 3 . 3. The method of claim 2 , wherein the inorganic material comprises a combination of zirconium oxide and cerium oxide. 4. The method of claim 2 , wherein the inorganic material comprises a combination of boehmite and cerium oxide. 5. A method for cracking hydrocarbon, comprising: providing steam and hydrocarbon; and feeding steam and hydrocarbon into a reactor having an inner surface accessible to hydrocarbon, the inner surface comprising a sintered product of a perovskite material of formula AaBbCcDdO3−δ and an inorganic material, wherein the inorganic material comprises at least one of cerium oxide, zinc oxide, tin oxide, zirconium oxide, boehmite and silicon dioxide; 0<a<1.2, 0≤b≤1.2, 0.9<a+b≤1.2, 0<c<1.2, 0≤d≤1.2, 0.9<c+d≤1.2, −0.5<δ<0.5; A is selected from calcium (Ca), strontium (Sr), barium (Ba), and any combination thereof; B is selected from lithium (Li), sodium (Na), potassium (K), rubidium (Rb) and any combination thereof; C is selected from cerium (Ce), zirconium (Zr), antimony (Sb), praseodymium (Pr), titanium (Ti), chromium (Cr), manganese (Mn), ferrum (Fe), cobalt (Co), nickel (Ni), gallium (Ga), tin (Sn), terbium (Tb) and any combination thereof; and D is selected from lanthanum (La), cerium (Ce), praseodymium (Pr), neodymium (Nd), promethium (Pm), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), holmium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lutetium (Lu), scandium (Sc), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), ferrum (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), yttrium (Y), zirconium (Zr), niobium (Nb), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), cadmium (Cd), hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), gold (Au), gallium (Ga), indium (In), tin (Sn), antimony (Sb) and any combination thereof, wherein the perovskite material is selected from SrCeO 3 , SrZr 0.3 Ce 0.7 O 3 , BaMnO 3 , BaCeO 3 , and BaZr 0.3 Ce 0.7 O 3 , BaZr 0.3 Ce 0.5 Y 0.2 O 3 , BaZr 0.1 Ce 0.7 Y 0.2 O 3 , BaZrO 3 , BaZr 0.7 Ce 0.3 O 3 , BaCe 0.5 Zr 0.5 O 3 , BaCe 0.9 Y 0.1 O 3 , BaCe 0.85 Y 0.15 O 3 , and BaCe 0.5 Y 0.2 O 3 . 6. The method of claim 5 , wherein the hydrocarbon comprises at least one of ethane, heptane, liquid petroleum gas, naphtha, and gas oil. 7. The method of claim 5 , wherein the sintered product comprises BaZr 0.3 Ce 0.7 O 3 . 8. The method of claim 5 , wherein the inorganic material comprises a combination of zirconium oxide and cerium oxide. 9. The method of claim 5 , wherein the inorganic material comprises a combination of boehmite and cerium oxide.
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