Methods for determining ethylene concentration in an ethylene oligomerization reactor using an ultrasonic flow meter are described, and these methods are integrated into ethylene oligomerization processes and related oligomerization reactor systems.

Methods for determining ethylene concentration in an ethylene oligomerization reactor using an ultrasonic flow meter are described, and these methods are integrated into ethylene oligomerization processes and related oligomerization reactor systems.

Systems and methods include a computer-implemented method for managing crude oil demand at a crude oil processing plant. Real-time process data is received for the plant and includes quantitative values for conditions and operations at the plant. A multiple stabilizer oil flow control strategy is determined for crude oil stabilizer columns of the plant using the real-time process data. A targeted oil flow rate is determined for each stabilizer column using the strategy. The targeted oil flow rate provides a continuous and on-target crude oil supply to components of the plant in multiple operating scenarios. The on-target crude oil supply includes a range of oil flow volumes required for continuous operation. The plant is operated using the strategy, including maintaining, using the targeted oil flow rate for each stabilizer column, crude oil demand for different combinations of the crude oil stabilizer columns and multiple operating scenarios.

Control of humidity in chemical reactors, and associated systems and methods, are generally described. In certain embodiments, the humidity within gas transport conduits and chambers can be controlled to inhibit unwanted condensation within gas transport pathways. By inhibiting condensation within gas transport pathways, clogging of such pathways can be limited (or eliminated) such that transport of gas can be more easily and controllably achieved. In addition, strategies for purging condensed liquid from chemical reactor systems are also described.

A device for converting cellulose to sugar has a reaction chamber with a plurality of control components, and a control assembly. The control assembly is operatively connected to the reaction chamber, a drive assembly and control components to transmit and receive interoperability signals. The device has an inlet hopper with a detector, a crusher, an outlet hopper, a sensor assembly, a steam inlet, and a carbon dioxide inlet. The inlet hopper is configured to receive and analyze proportion data of matters in a feedstock and catalyst mixture via the detector. The crusher receives and grinds the mixture from the inlet hopper to induce chemical reaction for producing sugar. The outlet hopper is configured to determine a proportion data of matter in the grinded mixture. The control assembly is configured to determine adjustments need to be performed on the components and drive assembly to optimize the sugar production.

A reactor for a chemical reaction, comprising a housing and a reaction chamber, a nozzle member with an inlet for letting at least one reactant flow into the reaction chamber, wherein the nozzle member is mounted in a movable manner relative to the housing, a sensor device and an adjusting device influencing the movement of the nozzle member can be adjusted, a control unit configured for receiving from the sensor device a measurement signal of the sensor device based on the measuring quantity and generating a control signal for the adjusting device depending on the measurement signal.

A device and a process to propagate molecular growth of hydrocarbons, either straight or branched chain structures, that naturally occur in the gas phase of a first gas to gas phase molecules of a second gas having higher molecular chain lengths than the hydrocarbons of the first gas. According to one embodiment, the device includes a grounded reactor vessel having a gas inlet, a product outlet, and an electrode within the vessel; a power supply coupled to the electrode for creating an electrostatic field within the vessel for converting the first gas to a second gas.

A process and system for maintaining optimum polymerization production in a loop polymerization reactor by continuously and periodically obtaining polymerization results, such as melt index (MI), production rate and ash content of the polymer produced, determining whether each of the results is within desired ranges, storing and averaging recently obtained results in a database within a reaction rate controller program, and when one of the results is out of the desired range modifying at least one reaction parameter set-point such as monomer concentration, catalyst feed rate and reactor temperature to drive any out-of-range polymerization result(s) toward the desired range for that result.

A method and apparatus for producing a solid biofuel from hydrocarbonaceous feedstock is described. The process includes loading a hydrocarbonaceous feedstock into a reactor vessel, adding an aqueous catalyst solution into the reactor vessel, wherein the catalyst solution resides at the bottom of the reactor vessel under the hydrocarbonaceous feedstock position, heating the reactor vessel at or above 170° C. to catalyze a reaction of hydrocarbonaceous feedstock under saturated steam conditions for a time sufficient to yield a polymeric biofuel, and isolating the polymeric biofuel from the reactor vessel.

Disclosed herein are processes and reaction systems for controlling a temperature of an oligomerization reaction zone using a heat exchange system.