A system and method combine a first reactant with a second reactant to create a reaction product. A first pump is in fluid communication with a reaction vessel and a source of the first reactant. A second pump is in fluid communication with the reaction vessel and a source of the second reactant. A gas sparger is located in the reaction vessel, and the gas sparger is in fluid communication with a gas source for providing gas to the reaction vessel. A controller is configured to execute a program stored in the controller to: (i) receive a sensor signal based on a force exerted by the reaction vessel in a direction toward the sensor, and (ii) operate the first pump and the second pump to deliver to the reaction vessel the first reactant and the second reactant thereby causing a reaction that creates the reaction product.

Devices and methods for controlling the properties of chemical species during time-dependent processes. A device includes a reactor for containing one or more chemical species of a time-dependent process, an extraction pump for automatically and continuously extracting an amount of the one or more chemical species from the reactor, one or more detectors for measuring property changes of the one or more extracted chemical species and generating a continuous stream of data related to the one or more property changes to the one or more chemical species during a time interval, and a process controller configured to fit the continuous stream of data to a mathematical function to predict one or more properties of the one or more chemical species at a future time point and make one or more process decisions based on the prediction of one or more properties at the future time point.

A catalytic reactor is provided comprising a plurality of first flow channels including a catalyst for a first reaction; a plurality of second flow channels arranged alternately with the first flow channels; adjacent first and second flow channels being separated by a divider plate (13a, 13b), and a distributed temperature sensor such as an optical fiber cable (19). The distributed temperature sensor may be located within the divider plate, or within one or 10 more of the flow channels.

Devices and methods for controlling the properties of chemical species during time-dependent processes. A device includes a reactor for containing one or more chemical species of a time-dependent process, an extraction pump for automatically and continuously extracting an amount of the one or more chemical species from the reactor, one or more detectors for measuring property changes of the one or more extracted chemical species and generating a continuous stream of data related to the one or more property changes to the one or more chemical species during a time interval, and a process controller configured to fit the continuous stream of data to a mathematical function to predict one or more properties of the one or more chemical species at a future time point and make one or more process decisions based on the prediction of one or more properties at the future time point.

In a method for monitoring a chemical reaction in a continuously operated reactor with at least one tube section, wherein the reactor has an intake, an outlet and a main flow direction running between the intake and the outlet, substances are supplied to the reactor via the intake and a product mixture made up of these substances and the solidified products thereof is created in the reactor. The reaction is monitored and measures are taken to prevent an uncontrolled reaction process, wherein these measures comprise at least the following steps: interruption of the intake and outlet, active pressure relief of the reactor and flushing of the reactor with an inert substance. This facilitates a safe and efficient interruption of the chemical reaction.

An actuator is provided that includes a housing, a linear actuating shaft disposed within the housing, a piston coupled with the shaft, and a fluid barrier disposed on an end of the shaft and encircled by the piston. The piston is movable longitudinally between an extended configuration and a retracted configuration upon rotation of the shaft. The fluid barrier engages an inner surface of the piston preventing fluid communication across the fluid barrier. The fluid barrier has a shaft engaging side which receives the shaft and a fluid facing side. A cavity is formed between the piston and the fluid facing side and expands when the piston moves to the extended configuration and contracts when the piston moves to the retracted configuration. A port is disposed in the piston and extends from the cavity to external the piston thereby permitting fluid communication between the cavity and external the piston.

The invention discloses a start-up system for starting reforming hydrogen production device, the reforming hydrogen production device and the start-up system adopt methanol-water mixture as feedstock, comprising a feed riser pipe, a flame tray, an upper cover body and an igniter. The flame tray and the upper cover body are disposed on the feed riser pipe from the bottom up; the middle part of the upper cover body is provided with an aperture in communication with the feed riser pipe, the methanol-water mixture feedstock may flow from the feed riser pipe up to the aperture and be exuded from the aperture and spread around along the upper side surface of the upper cover body until flowing into the flame tray. The present invention has high ignition success rate, large methanol-water mixture burning areas and combustion flame, and can quickly restart the reforming hydrogen production device.

The invention relates to a method for an economically and technically improved embodiment of a production interruption in a production method for isocyanates by phosgenation of the corresponding amines, in which the entire production plant is not closed while one or more parts of the plant is taken out of operation, rather the input materials and/or reaction products available in the production plant are recirculated through at least one part of the plant that has not been taken out of operation. The invention further relates to a plant for producing isocyanates and to a method for operating a plant for producing isocyanates.

A waterless decarboxylation device used to decarboxylate cannabis is described. For example, the device could include a product container to contain an amount of raw cannabis plant material, a heating container configured to surround and contact the product container, a heater in contact with the heating container, a foam layer surrounding the product container and heating container, at least one sensor configured to detect the temperature of the heating container, a lid that encloses the product container and fluidly seals it from the environment, and a controller configured to control power to the heater in response to signals sent from the at least one sensor indicating whether the heating container has reached a threshold temperature.

Present invention relates to a process and an installation (100) for the preparation of hydrogen cyanide by the Andrussow process, and more precisely for improving the conditions of mixing the reactant gases before feeding the Andrussow type reactor (60), in order to improve safety, to avoid any risk of explosion and to produce HCN in safe and efficient manner. The installation is configured in such a manner that oxygen is pre-mixed with air with a ratio comprised between 20.95% and 32.5% by volume, preferably between 25% and 30.5% by volume; methane containing gas and ammonia are simultaneously added in the pre-mixture of oxygen-enriched air in such a manner that the volumic ratio of methane to ammonia is comprised between 1.35 and 1.02 depending on the content of oxygen into air; said obtained reactant gases mixture having a temperature comprised between 80 C. and 120 C., preferably between 95 C. and 115 C. for feeding the Andrussow type reactor (60).