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90 条记录 (耗时 0.033 秒)

    Hydrogen chloride recovery
    22.
    发明授权
    Hydrogen chloride recovery 失效
    氯化氢回收

    公开(公告)号：US4113786A

    公开(公告)日：1978-09-12

    申请号：US673095

    申请日：1976-04-02

    申请人： Utah Tsao

    发明人： Utah Tsao

    IPC分类号： C07C17/154 ,  C01B7/00 ,  C01B7/01 ,  C07C17/00 ,  C07C17/158 ,  C07C17/38 ,  C07C19/01 ,  C07C67/00

    CPC分类号： C07C17/38 ,  C01B7/01

    摘要： Process for recovering hydrogen chloride from a gas withdrawn from an oxychlorination reaction zone which contains hydrogen chloride and water vapor wherein the gas is initially cooled, followed by contacting the gas with a small amount of water to absorb the hydrogen chloride from the gas. The water content is controlled to provide an aqueous hydrogen chloride stream having a hydrogen chloride concentration of from 10% to 20%, with the absorbed aqueous hydrogen chloride being recycled to the oxychlorination reaction. A dilute aqueous hydrogen chloride stream, obtained from another portion of the process, may be employed in the initial cooling step, as a direct quench, resulting in vaporization of the dilute aqueous hydrogen chloride stream and eliminating the necessity for a hydrogen chloride concentrator.

    摘要翻译： 从包含氯化氢和水蒸气的氧氯化反应区抽出的气体中回收氯化氢的方法，其中气体最初被冷却，然后使气体与少量的水接触以从气体中吸收氯化氢。 控制含水量以提供氯化氢浓度为10％至20％的氯化氢水溶液流，将吸收的氯化氢水溶液再循环至氧氯化反应。 在初始冷却步骤中可以使用从该方法的另一部分获得的稀氯化氢水流，作为直接淬火，导致稀氯化氢水流的蒸发并且消除了氯化氢浓缩器的必要性。

    Process for preparation of ethylene and vinyl chloride from ethane
    23.
    发明授权
    Process for preparation of ethylene and vinyl chloride from ethane 失效
    从乙烷制备乙烯和氯乙烯的方法

    公开(公告)号：US4100211A

    公开(公告)日：1978-07-11

    申请号：US686908

    申请日：1976-05-17

    申请人： Angelo Joseph Magistro

    发明人： Angelo Joseph Magistro

    IPC分类号： B01J23/745 ,  B01J23/83 ,  C07C5/48 ,  C07C17/154 ,  C07C21/02

    CPC分类号： C07C5/48 ,  B01J23/745 ,  B01J23/83 ,  C07C17/154 ,  Y02P20/52 ,  Y02P20/584

    摘要： Ethylene and vinyl chloride are prepared in excellent yields by the reaction of ethane with a chlorine source in the presence of oxygen and a solid solution catalyst containing iron cations. The present invention comprises an improvement in the above process wherein the solid solution catalyst after exhibiting a loss in activity is regenerated in situ by the addition of an iron source such as Fe(NO.sub.3).sub.3 to the ongoing process. After addition of the iron source, ethane conversion to products and yields of ethylene and vinyl chloride similar to that originally obtained using freshly prepared solid solution catalyst are achieved. Furthermore, the invention allows for extended operation of the process without loss of time and productivity due to possible interruptions caused by regeneration of the catalyst using known techniques.

    摘要翻译： 乙烯和氯乙烯通过乙烷与氯源在氧气和含铁阳离子的固溶体催化剂的存在下反应而以优异的产率制备。 本发明包括上述方法的改进，其中通过向正在进行的方法中添加铁源（例如Fe（NO 3）3）而使活性损失后的固溶催化剂原位再生）。 加入铁源后，乙酸转化成产物，乙烯和氯乙烯的产率与原来采用新制备的固溶体催化剂得到的相似。 此外，本发明允许该方法的延长操作，而不会因为使用已知技术的催化剂再生而引起的可能的中断而损失时间和生产率。

    Purging of tars and carbon from chlorinated hydrocarbon effluent
    24.
    发明授权
    Purging of tars and carbon from chlorinated hydrocarbon effluent 失效
    从氯化烃流出物中清除焦油和碳

    公开(公告)号：US3992460A

    公开(公告)日：1976-11-16

    申请号：US488459

    申请日：1974-07-15

    申请人： Utah Tsao

    发明人： Utah Tsao

    IPC分类号： C01B7/00 ,  C07C17/152 ,  C07C17/154 ,  C07C17/156 ,  C07C17/38 ,  C07C21/00

    CPC分类号： C07C17/38 ,  C07C17/152 ,  C07C17/154 ,  C07C17/156

    摘要： An effluent containing chlorinated hydrocarbons and tar, withdrawn from a reactor employing molten copper chlorides and oxychloride, is quenched to separate carbon and tars, and the separated carbon and tars introduced into the reactor to effect combustion thereof. The reaction is preferably directed to the production of vinyl chloride or chlorinated methanes.

    摘要翻译： 将含有氯化烃和焦油的流出物从使用熔融氯化铜和氯氧化物的反应器中排出，被淬灭以分离碳和焦油，并将分离的碳和焦油引入反应器中以进行燃烧。 该反应优选用于生产氯乙烯或氯化甲烷。

    Production of vinyl chloride from ethane
    25.
    发明授权
    Production of vinyl chloride from ethane 失效
    从乙烯生产氯乙烯

    公开(公告)号：US3987119A

    公开(公告)日：1976-10-19

    申请号：US408956

    申请日：1973-10-23

    申请人： Bruce E. Kurtz ,  Edmund W. Smalley ,  Walter E. Sommerman ,  John R. Van Atta

    发明人： Bruce E. Kurtz ,  Edmund W. Smalley ,  Walter E. Sommerman ,  John R. Van Atta

    IPC分类号： C07C5/44 ,  C07C5/48 ,  C07C7/167 ,  C07C17/15 ,  C07C17/154 ,  C07C21/06 ,  C07C21/02

    CPC分类号： C07C21/06 ,  C07C17/15 ,  C07C17/154 ,  C07C5/44 ,  C07C5/48 ,  C07C7/167

    摘要： A process is disclosed for the production of ethylene dichloride from ethane. Ethane is introduced into an autothermic (self-sustaining) cracking zone together with controlled proportions of chlorine and oxygen. The autothermic cracking zone is maintained at a temperature above about 700.degree. C. but below 1000.degree. C. for a sufficient time to convert from about 20 to 95 percent of the ethane having about 96 to 74 percent ethylene yield, respectively, based on the converted ethane. The reaction mixture, containing predominantly ethylene and hydrogen chloride, is quenched with a volatile liquid. The quenched mixture is passed, together with oxygen, into a catalytically activated oxyhydrochlorination zone to convert the ethylene, hydrogen chloride and oxygen to ethylene dichloride. If vinyl chloride is desired as a product, part or all of the produced ethylene dichloride is passed to a second cracking zone for conversion to vinyl chloride product and hydrogen chloride. The hydrogen chloride produced is recycled to the oxyhydrochlorination zone. Ethylene dichloride, vinyl chloride or mixtures of ethylene dichloride and vinyl chloride can be recovered as product, with substantially complete utilization of the hydrogen chloride produced.

    Methane conversion process
    28.
    发明授权
    Methane conversion process 失效
    甲烷转化过程

    公开(公告)号：US3314760A

    公开(公告)日：1967-04-18

    申请号：US22672262

    申请日：1962-09-27

    申请人： GOODRICH CO B F

    发明人： TRAPASSO LOUIS E

    IPC分类号： B01J27/185 ,  B01J27/188 ,  B01J27/195 ,  B01J27/198 ,  C01B32/40 ,  C07C17/154

    CPC分类号： C07C17/154 ,  B01J27/1853 ,  B01J27/188 ,  B01J27/195 ,  B01J27/198 ,  C01B32/40 ,  C07C19/01

    摘要： Carbon monoxide is produced by contacting a mixture of methane, hydrogen chloride and oxygen or a gas containing molecular oxygen with an iron phosphate catalyst at a temperature of 300 DEG to 700 DEG C. Phosphates of other metals, especially of Cu, Co, Ni, Cr, Pb, Ce, Mn, Bi, Mg, Cd or V, may also be present, the mole ratio of the phosphate of iron to the phosphate of the other metal being at least 1 : 1. Specified types of phosphate are orthophosphates, polyphosphates, metaphosphates, ultraphosphates, pyrophosphates, monohydrogen phosphates and dihydrogen phosphates. The catalyst may be used in an unsupported or supported form, specified carriers being diatomaceous earths, silica, silica gel, pumice, alumina, clay and porous brick. Examples are given.ALSO:Chlorinated methanes are produced by contacting a mixture of methane, hydrogen chloride and oxygen or a gas containing molecular oxygen with an iron phosphate catalyst at a temperature of 300 to 700 DEG C. Phosphates of other metals, especially of Cu, Co, Ni, Cr, Pb, Ce, Mn, Bi, Mg, Cd or V, may also be present, the mole ratio of the phosphate of iron to the phosphate of the other metal being at least 1:1. Specified types of phosphate are orthophosphates, polyphosphates, metaphosphates, ultraphosphates, pyrophosphates, monohydrogen phosphates and dihydrogen phosphates. The catalyst may be used in an unsupported or supported form, specified carriers being diatomaceous earths, silica, silica gel, pumice, alumina, clay and porous brick. Examples are given.ALSO:A catalyst for the oxychlorination of methane to chlorinated methanes (see Division C2) and carbon monoxide (see Division C1) comprises an iron phosphate. Phosphates of other metals, especially of Cu, Co, Ni, Cr, Pb, Ce, Mn, Bi, Mg, Cd and V, may also be present and serve as promoters or activators, the mole ratio of the phosphate of iron to the phosphate of the other metal being at least 1 : 1. The catalyst may be unsupported or supported on carriers such as diatomaceous earths, silica, silica gel, pumice, alumina, clay and porous brick. Specified types of phosphate are orthophosphates, polyphosphates, metaphosphates, ultraphosphates, pyrophosphates, monohydrogen phosphates and dihydrogen phosphates. Examples describe the preparation of (1) a mixture of ferric and cobaltous phosphates in a 3 : 1 molar ratio suported on silica gel, (3) a mixture of ferric and ceric pyrophosphates in a 4 : 1 molar ratio supported on silica gel, (6) a mixture of ferric and cupric pyrophosphates in a 1 : 1 molar ratio supported on silica, and (7) a mixture of ferric and cupric pyrophosphates in a 1 ¦ 1 molar ratio supported on pumice stone.