摘要:
A method for operating a dimerization reactor that receives a hydrocarbon feed and produces an output stream comprising a light hydrocarbon component, a dimer and an alcohol component comprises: (a) separating the first output stream into a top stream containing the light hydrocarbon and a bottom stream containing the dimer, with the alcohol being present in the top stream or the bottom stream or both; (b) contacting at least one of the bottom and top streams with a water stream so as to extract at least a major portion of the alcohol therefrom, thereby forming an water/alcohol stream; (c) contacting the water/alcohol stream with a hydrocarbon stream so as to extract at least a major portion of the alcohol present in the water/alcohol stream into the hydrocarbon stream, thereby forming an alcohol-enriched hydrocarbon stream; and (d) feeding the alcohol-enriched hydrocarbon stream into the dimerization reactor.
摘要:
A process for the selective hydrogenation of alpha-methyl-styrene (AMS) to cumene in a two catalyst system is disclosed. A crude cumene feed stream containing up to 10% AMS by weight is supplied to the first reaction zone 112 and mixed with hydrogen in a first catalyst bed 118 containing a nickel catalyst, converting from 70 to 95 percent of the AMS to cumene. Cumene and remaining AMS are separated from hydrogen in a liquid take off tray 120. The first reaction zone 112 effluent is supplied to a second reaction zone 114, where the effluent and hydrogen gas are mixed in a second catalyst bed 126 containing a noble-metal catalyst to substantially convert any remaining AMS to cumene. Cumene is collected, separated from the hydrogen, and can be resupplied to the hydrogenation reactor 110, or supplied as feed to a phenol synthesis loop.
摘要:
A process for the selective hydrogenation of alpha-methyl-styrene (AMS) to cumene in a two catalyst system is disclosed. A crude cumene feed stream containing up to 10% AMS by weight is supplied to the first reaction zone 112 and mixed with hydrogen in a first catalyst bed 118 containing a nickel catalyst, converting from 70 to 95 percent of the AMS to cumene. Cumene and remaining AMS are separated from hydrogen in a liquid take off tray 120. The first reaction zone 112 5effluent is supplied to a second reaction zone 114, where the effluent and hydrogen gas are mixed in a second catalyst bed 126 containing a noble-metal catalyst to substantially convert any remaining AMS to cumene. Cumene is collected, separated from the hydrogen, and can be resupplied to the hydrogenation reactor 110, or supplied as feed to a phenol synthesis loop.
摘要:
Systems and methods for processing one or more hydrocarbons are provided. A hydrocarbon can be selectively separated to provide one or more finished products and an asphaltenic hydrocarbon using a pretreatment process. The asphaltenic hydrocarbon can be selectively separated to provide a deasphalted oil and one or more asphaltenes. At least a portion of the deasphalted oil can be converted to one or more first products using a first post-treatment process. At least a portion of the one or more asphaltenes can be converted to one or more second products using a second post-treatment process.
摘要:
Systems and processes for producing one or more olefins. A feed containing 90% by weight or more C4 and higher hydrocarbons can be cracked at conditions sufficient to provide an olefinic mixture and an aromatic mixture. The olefinic mixture can comprise 90% by weight or more C1 to C3 hydrocarbons. The aromatic mixture can comprise 90% by weight or more C4 and higher hydrocarbons and one or more aromatics. The aromatic mixture can be contacted with one or more solvents to selectively separate at least a portion of the one or more aromatics therefrom to provide an aromatic-rich mixture and an aromatic-lean mixture. At least a portion of the aromatic-lean mixture can be recycled to the feed prior to cracking.
摘要:
Systems and methods for processing hydrocarbons are provided. A first hydrocarbon feed containing one or more C4 to C20 hydrocarbons having a research octane number of less than 88 can be cracked at a first temperature and in the presence of one or more catalysts to provide a first cracked mixture. A second hydrocarbon feed can be introduced to the first mixture to provide a second mixture. The second mixture can be cracked at the first temperature to provide a second cracked mixture containing propylene and one or more hydrocarbons having a research octane number of about 88 to about 95, and one or more coked catalysts.
摘要:
Generating in a computer system and deploying a data model of a plurality of database cluster configuration availability solutions over a computer network by creating a database cluster configuration modeling specification including objects contained in a unified model language diagram providing a definition of a database cluster configuration data model. Creating the database cluster configuration data model using the database cluster configuration modeling specification and upon receiving signals from a graphical user interface or from XML batch data files or from application programming interfaces, indicating the definition of the cluster configuration model. After creating the graphical database cluster configuration data model, constraints that specify a valid logical configuration are validated and the solution is transformed into data understandable by database cluster manager software applications and then transmitted over a network to multiple cluster manager targets to be incorporated as database cluster configuration availability solutions.
摘要:
Presented are embodiments of methods and systems that create an open ad exchange for online advertising by creating and running a premium ad exchange to provide pricing control to both publishers and advertisers. Techniques are presented where advertisement campaigns are matched with ad spot for sale on relevant pages based on a bid-ask price scheme. Further, techniques are presented for allowing publishers of advertisements to still realize revenue when the exchange cannot sell an impression at an asking price by sending that impression to a backup tag.
摘要:
An apparatus, method, and system are directed to maximizing network connectivity after a network failure in a network clustering system. A cluster master in a cluster is configured to manage membership to the cluster based, in part, on a connectivity of the members to adjacent networks. A network device sends information about its connectivity to the cluster master. The cluster master compares the received information to determine whether the network device has different connectivity than the cluster. If the network device has different connectivity, the cluster master may deny cluster membership to the network device. By rejecting network devices with different connectivity, the invention ensures that data received by the cluster may be delivered with substantially equal reliability by virtually any of the cluster members. Thus, even the cluster master may be rejected from membership to the cluster.
摘要:
An online exchange system and method supports open insertion order operations for online advertising markets displaying inefficiencies when delivering advertising media. Inefficiencies occur in an open ad exchange for online advertising when there is an under delivery of advertising content to identified target recipients. The online exchange system anticipates under deliveries and automatically fills instances of under delivery with impressions from the publisher inventory of the exchange according to fill requirements of the ad agency providing the advertising content (for example, budget limits and types of impressions to be used for filling the under delivery). The online exchange system also provides a mechanism for issuing a billing credit or discount to the agency if the bill for total impressions delivered according to the original campaign order and the automated under delivery fills exceeds a campaign budget.