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51.
公开(公告)号:US5238898A
公开(公告)日:1993-08-24
申请号:US933587
申请日:1992-08-26
IPC分类号: C07C2/84
CPC分类号: C07C2/84 , C07C2523/06 , C07C2523/34 , Y10S502/524
摘要: There is provided a catalyst and a process for the direct partial oxidation of methane with oxygen, whereby hydrocarbons having at least two carbon atoms are produced. The catalyst used in this reaction is a spinel oxide, such as MgMn.sub.2 O.sub.4 or CaMn.sub.2 O.sub.4, modified with an alkali metal, such as Li or Na.
摘要翻译: 提供了用氧气直接部分氧化甲烷的催化剂和方法,由此产生具有至少两个碳原子的烃。 在该反应中使用的催化剂是用碱金属如Li或Na改性的尖晶石氧化物,例如MgMn 2 O 4或CaMn 2 O 4。
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公开(公告)号:US4982023A
公开(公告)日:1991-01-01
申请号:US422365
申请日:1989-10-16
申请人: Scott Han , Robert E. Palermo , Dennis E. Walsh
发明人: Scott Han , Robert E. Palermo , Dennis E. Walsh
IPC分类号: C07C29/50
CPC分类号: C07C29/50
摘要: A marked improvement in yield, in selectivity or in both is obtained in the synthesis of methanol by the homogeneous direct partial oxidation of natural gas or other source of methane when the reactor space is filled with inert, refractory inorganic particles.
摘要翻译: 当反应器空间填充有惰性耐火无机颗粒时,通过天然气或其他甲烷源的均匀直接部分氧化在甲醇的合成中获得了产率,选择性或二者的明显改善。
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公开(公告)号:US4808296A
公开(公告)日:1989-02-28
申请号:US18112
申请日:1987-02-24
申请人: Nai Y. Chen , Dennis E. Walsh
发明人: Nai Y. Chen , Dennis E. Walsh
CPC分类号: C10G45/64
摘要: The present invention is a catalyst composition and method for dewaxing a wax-containing hydrocarbon feedstock which includes a zeolite characterized by a silica-to-alumina ratio from about 12 to about 200, a Constraint Index of from about 1 to about 12, and an alpha value of not more than about 50, in combination with a Group VIII metal hydrogenation-dehydrogenation component.
摘要翻译: 本发明是一种用于脱蜡含蜡烃原料的催化剂组合物和方法,其包括以二氧化硅与氧化铝的比为约12至约200,约束指数为约1至约12的沸石和 α值不超过约50,与VIII族金属氢化脱氢组分组合。
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公开(公告)号:US4790928A
公开(公告)日:1988-12-13
申请号:US153395
申请日:1988-02-08
CPC分类号: B01J29/40 , C07C1/20 , B01J2229/26 , B01J2229/36 , B01J2229/42 , C07C2529/40
摘要: The acidity of a zeolite catalyst is reduced by calcination in an essentially water-free atmosphere at temperatures above 700.degree. C., preferably from 725.degree. to 800.degree. C., to reduce the alpha value to less than about 10 percent of its original value. The low acidity catalysts produced in this way may be used for conversions requiring low acidity, shape selective catalysis, including dewaxing. The calcined, low acidity catalysts exhibit improved dewaxing activity.
摘要翻译: 沸石催化剂的酸度通过在高于700℃,优选725℃至800℃的温度下在基本无水的气氛中煅烧而降低,以将α值降低到其原始值的约10% 。 以这种方式生产的低酸性催化剂可用于需要低酸度,形状选择性催化(包括脱蜡)的转化。 煅烧的低酸度催化剂表现出改善的脱蜡活性。
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公开(公告)号:US4717049A
公开(公告)日:1988-01-05
申请号:US917288
申请日:1986-10-09
摘要: Uniform droplets of a liquid are produced by positioning the end of a capillary tube in the throat of a venturi. Gas flowing through the venturi detaches droplets from the end of the capillary tube without requiring high volume gas flow or excessively high velocity of the droplets.
摘要翻译: 通过将毛细管的末端定位在文氏管的喉部中来产生液体的均匀液滴。 流经文丘里管的气体从毛细管末端分离液滴,而不需要高体积气体流动或液滴的过高速度。
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公开(公告)号:US4358290A
公开(公告)日:1982-11-09
申请号:US163599
申请日:1980-06-27
申请人: Nai Y. Chen , Dennis E. Walsh
发明人: Nai Y. Chen , Dennis E. Walsh
CPC分类号: C10L9/10
摘要: An improved solid fuel obtained by blending fluid coke with 2 to 20 wt. % of a heavy petroleum liquid.
摘要翻译: 通过将流体焦炭与2〜20重量份混合而获得的改进的固体燃料。 %重质石油液体。
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公开(公告)号:US4302324A
公开(公告)日:1981-11-24
申请号:US163835
申请日:1980-06-27
申请人: Nai Y. Chen , Dennis E. Walsh
发明人: Nai Y. Chen , Dennis E. Walsh
CPC分类号: C10B55/02
摘要: A delayed coking process in which part of the coke produced is heated by partial burning and mixed with preheated coker feedstock to raise the temperature of the coking mass present in the coking drums. The rapid heat transfer thus obtained brings about some immediate flashing of volatiles and makes possible higher than usual temperatures in the coking drums. The results are a reduction of residence time in the drums and an increase in the yield of volatile products. Hot coke in excess of that required to heat the feed may be gasified. Thus, resultant net coke yields are lower than the conventional delayed coking process.
摘要翻译: 延迟焦化方法,其中产生的焦炭的一部分通过部分燃烧加热并与预热的焦化器原料混合,以提高存在于焦化鼓中的焦化物质的温度。 如此获得的快速热传递导致挥发物的一些即时闪蒸,并且使得可能比焦化鼓中的通常温度高。 结果是减少了在鼓中的停留时间和挥发性产物的产率的增加。 超过加热进料所需热焦炭可能气化。 因此,得到的净焦炭产量低于常规的延迟焦化方法。
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公开(公告)号:US4247384A
公开(公告)日:1981-01-27
申请号:US20601
申请日:1979-03-15
CPC分类号: C10G1/083
摘要: Improved method for solubilizing solid carbonaceous materials, e.g., wood and/or coal in an aromatic petroleum or coal-derived solvent in the presence of alkali and hydrogen transfer agent at elevated temperatures. The liquid products can be used as fuels or further processed into desirable products.
摘要翻译: 在碱和氢转移剂存在下,在升高的温度下,在芳香族石油或来自煤的溶剂中溶解固体碳质材料(例如木材和/或煤)的改进方法。 液体产品可用作燃料或进一步加工成所需产品。
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公开(公告)号:US4233138A
公开(公告)日:1980-11-11
申请号:US5428
申请日:1979-01-22
申请人: Louis D. Rollmann , Dennis E. Walsh
发明人: Louis D. Rollmann , Dennis E. Walsh
摘要: A process for suppressing the coking tendency of heavy crudes and resids in visbreaking operations comprising treating the charge stock with an inorganic sulfide.
摘要翻译: 一种抑制重质原油和残渣在减粘裂化作业中的焦化倾向的方法,包括用无机硫化物处理电荷原料。
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公开(公告)号:US4203830A
公开(公告)日:1980-05-20
申请号:US937660
申请日:1978-08-28
申请人: Louis D. Rollmann , Dennis E. Walsh
发明人: Louis D. Rollmann , Dennis E. Walsh
CPC分类号: C10G31/08 , C10G31/06 , C10G2300/107
摘要: A thermal demetalation and desulfurization process comprising the addition of ammonia and water to heavy crude oils and residuums with minimal coke formation and with decreased viscosity.
摘要翻译: 一种热脱金脱硫方法,包括将氨和水添加到重质原油和残留物中,最小的焦炭形成和粘度降低。
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