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公开(公告)号：US3726958A
公开(公告)日：1973-04-10
申请号：US3726958D
申请日：1971-02-22
IPC分类号： C01B17/04
CPC分类号： C01B17/0478
摘要： A sulfur dioxide-rich off gas stream obtained, as for example, by regeneration of a flue gas desulfurization sorbent, is treated with a hydrocarbon oil in the liquid phase at a temperature of about 250 F. to about 800*F. in order to reduce the sulfur dioxide. The hydrocarbon oil is preferably an inexpensive refinery stream, e.g., gas oil, catalytic cycle stock, or residuum. Hydrogen sulfide formed in the reduction can be reacted with a further quantity of sulfur dioxide to form elemental sulfur. At least a portion of the hydrocarbon oil after reaction with sulfur dioxide may be burned in a furnace in which flue gas containing sulfur dioxide is formed.
摘要翻译： 通过例如通过再生烟道气脱硫吸附剂获得的富含二氧化硫的废气流在烃相中在约250°F至约800°F的温度下用烃油处理，以便 减少二氧化硫。 烃油优选是廉价的炼油厂物流，例如瓦斯油，催化循环油或渣油。 还原中形成的硫化氢可以与另外的二氧化硫反应形成元素硫。 在与二氧化硫反应后的烃油中的至少一部分可以在其中形成含有二氧化硫的烟道气的炉中燃烧。
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2.发明授权
公开(公告)号：US3816603A
公开(公告)日：1974-06-11
申请号：US28235272
申请日：1972-08-21
发明人： WELTY A
摘要： PROCESS AND APPARATUS FOR DECOMPOSING AMMONIUM SULFATE. AN AQUEOUS SOLUTION OF AMMONIUM SULFATE AT ELEVATED TEMPERATURE AND PRESSURE, E.G., ABOUT 475* F. AND 450* P.S.I.G. IS INJECTED INTO A FLOWING STREAM OF HOT COMBUSTION GASES WHICH IS INITIALLY AT A TEMPRATURE ABOVE THE DECOMPOSITION TEMPERATURE OF AMMONIUM SULFATE AND AT A PRESSURE SUBSTANTIALLY LOWER THAN THAT OFF THE AMMONIUM SULFATE SOLUTION. THE WATER CONTENT OF THE SOLUTION IS FLASH EVAPORATED ADIABATICALLY AND THE AMMONIUM SULFATE, IN THE FORM OF FINELY DIVIDED PARTICLES SUSPENDED IN THE COMBUSTION GAS STREAM, IS DECOMPOSED INTO ANMONIUM BISULFATE AND AMMONIA. THE APPARATUS INCLUDES AN ESSENTIALLY TUBULAR REACTOR HAVING A PLURALITY OF VENTURI MIXERS THEREIN, AND A PLURALITY OF SOLUTION SUPPLY PIPES FOR SPRAYING AMMONIUM SULFATE SOLUTION INTO THE THROATS OF THE VENTURI MIXERS.
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公开(公告)号：US3853745A
公开(公告)日：1974-12-10
申请号：US33899273
申请日：1973-03-07
发明人： WELTY A
CPC分类号： C10G61/06
摘要： A hydrocarbon feedstock comprising naphthenes is catalytically reformed using a catalyst which promotes both dehydrogenation and isomerization. Cracking and other undesirable side reactions are substantially avoided by employing a reaction temperature in the range of 600* to 700*F and a hydrogen pressure not exceeding about 4 atmospheres. If the hydrogen partial pressure is about 1 atmosphere or less, satisfactory conversion of the naphthenes to aromatics is obtained without further steps. If the hydrogen partial pressure is between about 1 and about 4 atmospheres, the aromatics are adsorbed on a zeolite or other suitable substance as they are formed, thus shifting the equilibrium and promoting the dehydrogenation and isomerization reactions. The adsorbed aromatics are subsequently desorbed by, for example, heated hydrocarbon vapor. If the adsorption/desorption is used, a dual reactor set-up may be conveniently employed.
摘要翻译： 使用促进脱氢和异构化的催化剂对包含环烷烃的烃原料进行催化重整。 通过使用反应温度在600至700°F和不超过约4大气压的氢气压力下，基本上避免了开裂和其它不良副反应。 如果氢气分压约为1气氛或更低，则无需进一步的步骤即可获得令人满意的环烷烃转化为芳族化合物。 如果氢气分压在约1至4大气压之间，则芳烃在形成时被吸附在沸石或其它合适的物质上，从而转移平衡并促进脱氢和异构化反应。 吸附的芳族化合物随后通过例如加热的烃蒸气解吸。 如果使用吸附/解吸，可以方便地使用双重反应器。
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公开(公告)号：US3788978A
公开(公告)日：1974-01-29
申请号：US3788978D
申请日：1972-05-24
发明人： LEWIS W , WELTY A , BEARDEN R , MACMULLIN R
CPC分类号： C10G29/02 , C01B17/34 , C01P2006/34 , C01P2006/80 , C10G29/04 , C25C3/02
摘要： LOW SULFUR-CONTENT PETROLEUM OIL STOCKS ARE PREPARED BY CONTACTING A SULFUR-CONTAINING OIL STOCK WITH AN ALKALI METAL, PREFERABLY SODIUM, OR AN ALKALI METAL ALLOY, PREFERABLY SODIUM/LEAD, TO PRODUCE A MIXTURE COMPRISING A LOW SULFUR OIL AND A MIXTURE OF ALKALI METAL SALTS DISPERSED THEREIN. THE MIXTURE OF SALTS IN OIL IS RESOLVED BY CONTACTING THE SAME WITH, PREFERABLY, 30-160 MOLE PERCENT HYDROGEN SULFIDE BASED ON TOTAL MOLES OF SALT IN THE OIL, A TEMPERATURE OF ABOUT 670* F. OR ABOVE WHEREUPON A SALT PHASE SEPARATES FROM THE OIL. THUS SEPARATED THE SALT IS BLENDED WITH A MOLTEN SULFUR-RICH ALKALI METAL POLYSULFIDE THEREBY FORMING A SULFUR-DEPLETED ALKALI METAL POLYSULFIDE AND LIBERATING HYDROGEN SULFIDE. IN ANOTHER EMBODIMENT OF THE INVENTION. MOLTEN SULFUR MAY BE USED IN PLACE OF THE POLYSULFIDE. THE SULFUR-DEPLETED POLYSULFIDE IS THEN DECOMPOSED ELECTROLYTICALLY TO REFORM ALKALI METAL AND A SULFUR-RICH POLYSULFIDE, FROM WHICH ELEMENTAL SULFUR IS RECOVERED.
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公开(公告)号：US3785965A
公开(公告)日：1974-01-15
申请号：US3785965D
申请日：1971-10-28
发明人： WELTY A
CPC分类号： C10G53/12
摘要： LOW SULFUR-CONTENT PETROLEUM OIL STOCKS ARE PREPARED BY CONTACTING A SULFUR-CONTAINING OIL STOCK WITH AN ALKALI METAL, PREFERABLY SODIUM, OR ALKYLI METAL ALLOY, PREFERABLY SODIUM/LEAD, TO PRODUCE AN ALKALI SULFIDE-OIL DISPERSION. THE ALKALI SULFIDE IS REMOVED FROM THE OIL BY MEANS OF A TWO-STAGE WASHING TREATMENT. THE RECOVERED SULFIDE, AFTER ADDITIONAL TREATMENT, IS THEN ELECTROLYTICALLY DECOMPOSED THEREBY FERORMING ALKALI METAL FOR REUSE IN THE DESULFURIZATION PROCESS.
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