The disclosed invention relates to a method for restarting a synthesis gas conversion process which has stopped. The synthesis gas conversion process may be conducted in a conventional reactor or a microchannel reactor. The synthesis gas conversion process may comprise a process for converting synthesis gas to methane, methanol or dimethyl ether. The synthesis gas conversion process may be a Fischer-Tropsch process.

The invention relates to the use of a reactor, methods, and devices for the quantitative recovery of molecular hydrogen from solid, liquid, or gaseous substances which contain hydrogen and which have heteroatoms, as well as to reactors. In this case, the reactors have material containing chromium. The subject matter of the invention also includes the use of the reactor, the method, and the device for the compound-specific or component-specific measurement of the isotope ratio (δ.sup.2H) of hydrogen using online apparatuses.

Modular reactors comprising a chassis, reactor tubing and optionally a cover are disclosed. The chassis comprises a plurality of channels of different lengths into which a length of reactor tubing is placed to create the reactor portion of the flow reactor.

In various embodiments, a microreactor features a corrosion-resistant microchannel network encased within a thermally conductive matrix material that may define therewithin one or more hollow heat-exchange conduits.

The present invention relates to a method for controlling an ultrafast chemical reaction using a microfluidic reactor, and more specifically, the present invention relates to a method for controlling an ultrafast chemical reaction such as the Fries rearrangement reaction and the like by using a microfluidic reactor by the 3D metal printing technique.

Systems and methods for synthesizing chemical products, including active pharmaceutical ingredients, are provided. Certain of the systems and methods described herein are capable of manufacturing multiple chemical products without the need to fluidically connect or disconnect unit operations when switching from one making chemical product to making another chemical product.

A catalytic microscale reactor with spiral reactor geometry may have a high surface area to volume ratio, high catalytic surface area, high heat transfer surface area, long residence time, and high single pass conversion. The catalytic surface may be treated with microsphere spacer particles which serve to maintain the space between them at an engineered distance without the need for precise manufacturing techniques. The design of the reactor may allow for a catalyst surface to be removed, uncoiled, refurbished, and recoiled in an automated continuous process. An automated continuous process may be suitable both for initially preparing a new catalytic surface as well as refurbishing a fouled catalytic surface and may reduce the time and cost to prepare a new surface.

The present invention refers to a system for the process of synthesis of zeolite nanoparticles in continuous flow wherein the processes of mixing, aging and crystallization are integrated, to reduce the synthesis time. The system has a microfluidic device of the 3D crossing channels micromixer type, consisting of microchannels built in series, used to generate the reaction mixture; buffer system with addition of seeds; and a heated tubular reactor which, in turn, is used for crystallization, which takes place through a continuous hydrothermal process.

A continuous acoustic chemical microreactor system is disclosed. The system includes a continuous process vessel (CPV) and an acoustic agitator coupled to the CPV and configured to agitate the CPV along an oscillation axis. The CPV includes a reactant inlet configured to receive one or more reactants into the CPV, an elongated tube coupled at a first end to the reactant inlet and configured to receive the reactants from the reactant inlet, and a product outlet coupled to a second end of the elongated tube and configured to discharge a product of a chemical reaction among the reactants from the CPV. The acoustic agitator is configured to agitate the CPV along the oscillation axis such that the inner surface of the elongated tube accelerates the one or more reactants in alternating upward and downward directions along the oscillation axis.

A reactor containing a heat exchanger is disclosed, which can be operated with co-current or counter-current flow. Also disclosed is a system that includes a reactor having a reformer and a vaporizer, a fuel supply, and a water supply. The reactor includes a source of combustion gas, a reformer operative to receive reformate, and a vaporizer operative to receive water. The reformer and vaporizer each include a stack assembly formed by a combination of separator shims and channel shims. The separator shims and channel shims are stacked in a regular pattern to form two sets of channels within the stack assembly. One set of channels will have vertical passageways at either end and a horizontal flowpath between them, while the other set of channels has only a horizontal flowpath.