摘要:
A method of particulate matter agglomeration enables cost effective and efficient filtration of small particles. The method includes receiving a colloid including colloidal particles; introducing carrier particles into the colloid, where the carrier particles are generally larger than the colloidal particles; and applying ultrasonic energy to both the colloid and the carrier particles to cause the colloidal particles to agglomerate with the carrier particles.
摘要:
The present invention provides an epoxidation reactor system for preparing an olefin oxide comprising: - one or more purification zones comprising one or more purification vessels containing an absorbent comprising copper and zinc; and - a reaction zone comprising one or more reactor vessels containing an epoxidation catalyst, wherein the reaction zone is positioned downstream from the one or more purification zones; a process for preparing an olefin oxide; and a process for preparing a 1,2-diol, a 1,2-diol ether, a 1,2-carbonate, and an alkanolamine.
摘要:
On décrit dans la présente invention un dispositif permettant d'améliorer la distribution du catalyseur dans la zone d'injection de charge des risers de FCC de manière à améliorer la conversion.
摘要:
A reactor system comprising: a reactor vessel, and positioned inside the reactor vessel, an absorbent and a catalyst positioned downstream from the absorbent; a process for reacting a feed; and a process for preparing a 1,2-diol, a 1,2-diol ether, a 1,2-carbonate, or an alkanolamine.
摘要:
The present invention provides a reactor system comprising: - one or more purification zones comprising an absorbent which comprises silver, an alkali or alkaline earth metal, and a support material having a surface area of more than 20 m2/g, and - a reaction zone comprising a catalyst, which reaction zone is positioned downstream from the one or more purification zones; an absorbent; a process for reacting a feed comprising one or more feed components; and a process for preparing a 1,2-diol, a 1,2-diol ether, a 1,2-carbonate, or an alkanolamine.
摘要:
Catalyst particle distribution and mixing in the slurry part of bubble columns is improved by introducing a secondary suspending fluid into the columns at locations within the lower 20 % of the vertical height of the column (3) but above the gas distributor (2) normally located at or near the bottom of the columns.
摘要:
The number of small gels that form in polyolefin thin films may be reduced by altering certain production parameters of the polyolefin. In some instances, the number of small gels may be influenced by the melt index of the polyolefin. However, in many instances, melt index is a critical part of the polyolefin product specification and, therefore, is not manipulated. Two parameters that may be manipulated to mitigate small gel count while maintaining the melt index are polyolefin residence time in the reactor and ICA concentration in the reactor.
摘要:
A fluidized bed reactor includes a gas distributor, a tapered section above the gas distributor, and an expanded head above the tapered section. The gas distributor defines a plurality of inlets surrounding a product withdrawal tube, which extends away from the fluidized bed reactor. The fluidized bed reactor is useful in a process for fluidizing relatively large particles, such as Geldart Group B particles and/or Geldart Group D particles, where said particles are in a bubbling fluidized bed residing, in whole or in part, in the tapered section. The fluidized bed reactor and process may be used for manufacturing polycrystalline silicon.
摘要:
The present invention provides an epoxidation reactor system for preparing an olefin oxide comprising: - one or more purification zones comprising one or more purification vessels containing an absorbent comprising copper and zinc; and - a reaction zone comprising one or more reactor vessels containing an epoxidation catalyst, wherein the reaction zone is positioned downstream from the one or more purification zones; a process for preparing an olefin oxide; and a process for preparing a 1,2-diol, a 1,2-diol ether, a 1,2-carbonate, and an alkanolamine.
摘要:
The present invention discloses a device for improving the distribution of the catalyst in the charge injection zone of FCC risers so as to improve the conversion.