摘要:
A vessel for regenerating a catalyst for reforming or for aromatic compound production comprising a support, at least one noble metal and chlorine, the catalyst being in the form of a moving bed, said vessel comprising at least one combustion zone (A) provided with at least one conduit (9) for introducing oxygen gas and at least one conduit (5) for evacuating gasses from the combustion step, at least one oxychlorination zone (B) and at least one calcining zone (C) provided with at least one conduit (18) for introducing an oxygen-containing gas, said vessel also comprising at least one conduit (1) for introducing catalyst into the vessel, at least one conduit (3) for introducing catalyst from the combustion zone into the following oxychlorination zone (B), and at least one conduit (21) for evacuating gases from the oxychlorination zone comprising at least one means (20) for introducing least one chlorinating agent and at least one means (19) for introducing water and at least one means (17) for introducing an oxygen containing gas.
摘要:
The invention concerns a process and unit for regenerating a catalyst for the production of aromatic compounds, in particular for reforming, the catalyst being in a moving bed, comprising combustion, oxychlorination and calcining steps, in which at least one chlorinating agent, at least one oxygen-containing gas, and water are introduced into the oxychlorination step such that the H2O/HCl molar ratio is 1 to 50, the oxychlorination step being carried out in the presence of an oxychlorination gas containing less than 21% of oxygen and at least 50 ppm by weight of chlorine (based on HCl), and at a temperature of 350-600° C., and in which the combustion step is carried out in at least two combustion zones, each zone being separated from the adjacent zones, and at least one gas charged with oxygen is introduced into each zone, the gases produced being extracted from each zone, and in which the severity of the operating conditions increases in the direction of flow of the catalyst.
摘要翻译:本发明涉及用于再生催化剂的方法和单元,所述催化剂用于生产芳族化合物,特别是重整催化剂在移动床中,包括燃烧,氧氯化和煅烧步骤,其中至少一种氯化剂,至少一种 将含氧气体和水引入到氧氯化步骤中,使得H 2 O / HCl摩尔比为1至50,氧氯化步骤在含有小于21%氧气和至少50%的氧氯化气体存在下进行 ppm(基于HCl),并且在350-600℃的温度下,并且其中燃烧步骤在至少两个燃烧区域中进行,每个区域与相邻区域分离,并且在 将至少一个带有氧气的气体引入每个区域,所产生的气体从每个区域提取,并且其中操作条件的严重性在催化剂流动方向上增加。
摘要:
A reactor with integrated heat for carrying out a chemical conversion process in the presence of a gaseous diluent supplied through one or more ports at the upper and/or lower ends of a catalytic bed through which a feed moves substantially horizontally, and a process for converting a feed, such as a hydrocarbon feed in the reactor.
摘要:
An elongate reaction vessel and process includes at least two stages in the vertical direction in which an endothermic or exothermic catalytic reaction is carried out and comprises: a catalytic reaction zone (12a, 12b) per stage (6, 7); introducing (2) a reaction fluid to a stage adapted for transverse motion of the fluid across the whole vertical extent of the reaction zone; introducing and extracting the catalyst; a heat exchanger (5a) for reaction fluids located inside the vessel between two successive reaction zones; means (6) for transporting reaction fluids from one stage to another preferably connected to the exchanger of the stage under consideration and to the inlet for reaction fluids of the subsequent stage; and means for recovering reaction fluids downstream of the last stage. The temperature variation in each zone and the temperature level are respectively adjusted by the thickness of each zone and by heat exchange.
摘要:
Process for catalytic conversion in the presence of hydrogen with regeneration of the catalyst that comprises a stage for reduction of said catalyst by the hydrogen that is obtained from the catalytic conversion stage, whereby this hydrogen is purified in advance of impurities that it contains by running it over adsorbent masses, whereby said adsorbent masses are regenerated by an increase in temperature that is provided by the effluent from the reduction stage of the catalyst. Application to the processes for regenerative reforming or dehydrogenation of paraffins and naphthenes and most generally to any moving-bed process that operates in the presence of hydrogen.
摘要:
Device (DME) or panel for collecting, distributing, mixing or drawing off several fluids, at least one main fluid and at least two secondary fluids, that comprises at least: means for collecting a main fluid (3, 9), at least two injection and/or draw-off rails (6, 7) that allow the passage of secondary fluids, at least two mixing chambers (11a, 11b) that communicate with injection and/or draw-off rails (6, 7) with orifices or passages (6i, 7i), means (12, 4) for redistributing the fluid that is obtained from said mixing chambers, means (5a, 5b) for separating collecting and redistributing means and draw-off rails (6, 7) are arranged one above the other, and mixing chambers (11a, 11b) are arranged on both sides of the rails and symmetrically relative to the orifices that have an injection function.
摘要:
The invention concerns a process for converting hydrocarbons using at least one globally endothermic chemical reaction, in which a hydrocarbon feed successively traverses at least two reaction zones each containing at least one solid catalyst and comprising between said reaction zones an intermediate step, in a non catalytic zone, for reheating the stream (ST) from the first of the two reaction zones prior to its introduction into said second reaction zone, and in which said reheating is carried out in a heat exchanger, with heat transfer essentially by convection using a thermal fluid TF with a coking sensitivity index CS that is less than that of the stream ST, the difference in temperature ΔT between the temperature of the fluid TF at the inlet to the exchanger and the temperature of the stream ST at the heat exchanger outlet being less than 250° C. The invention also concerns the use of said process for converting hydrocarbons and a unit for carrying out the process.
摘要:
Device (DME) or panel for collecting, distributing, mixing or drawing off several fluids, at least one main fluid and at least two secondary fluids, that comprises at least: means for collecting a main fluid (3, 9), at least two injection and/or draw-off rails (6, 7) that allow the passage of secondary fluids, at least two mixing chambers (11, 11b) that communicate with injection and/or draw-off rails (6, 7) with orifices or passages (6i, 7i), means (12, 4) for redistributing the fluid that is obtained from said mixing chambers, means (5a, 5b) for separating collecting and redistributing means and draw-off rails (6, 7) are arranged one above the other, and mixing chambers (11a, 11b) are arranged on both sides of the rails and symmetrically relative to the orifices that have an injection function.
摘要:
This invention pertains to a continuous catalytic process, for example, for the metathesis of olefins that uses a catalyst circulating in a moving bed in at least one reaction zone operating in the liquid phase and in a regenerator, with a lift to transfer the deactivated catalyst emerging from the reaction zone to the regenerator, whereby said process is characterized by the fact that the transfer is accomplished by a gas that does not react with the catalyst and with the stripping off of at least a portion of the organic matter that is adsorbed on the deactivated catalyst.