Abstract:
The disclosure relates to particle heaters for heating solid particles to store electrical energy as thermal energy. Thermal energy storage directly converts off-peak electricity into heat for thermal energy storage, which may be converted back to electricity, for example during peak-hour power generation. The particle heater is an integral part of an electro-thermal energy storage system, as it enables the conversion of electrical energy into thermal energy. As described herein, particle heater designs are described that provide efficient heating of solid particles in an efficient and compact configuration to achieve high energy density and low cost.
Abstract:
The present invention relates to a process for heat transfer from a reactor effluent to a reactor feed comprising the steps of contacting a gaseous reactor feed with heat transfer particles having a higher temperature than the gaseous reactor feed, separating the thus obtained heated gaseous reactor feed from the cooled heat transfer particles, subjecting said heated gaseous reactor feed to a chemical conversion in a reactor to provide a gaseous reactor effluent, contacting the gaseous reactor effluent with heat transfer particles having a lower temperature than the gaseous reactor effluent and separating the thus obtained cooled gaseous reactor effluent from the heated heat transfer particles.
Abstract:
This invention provides a method for thermally converting volatile fatty acid (VFA) salts to ketones by mixing dry calcium salts of VFAs with hot heat transfer agent in an evacuated container, thereby causing thermal decomposition of the calcium salts of VFAs to form ketone-containing vapor and calcium carbonate; and separating the ketone-containing vapor from the calcium carbonate and heat transfer agent by condensing a mixture of ketones from the ketone-containing vapor.
Abstract:
A regenerative thermal energy system includes a heat exchange reactor (110) that includes a top entry portion (116), a lower entry portion (120), and a bottom discharge portion (130). The system also includes at least one fluid source (122) coupled in flow communication with the at least one heat exchange reactor at the lower entry portion. The system also includes at least one cold particle storage source (118) coupled in flow communication with the at least one heat exchange reactor at the top entry portion. The system further includes at least one thermal energy storage (TES) vessel (160) coupled in flow communication with the heat exchange reactor at each of the bottom discharge portion and the top entry portion. The heat exchange reactor is configured to facilitate direct contact and counter-flow heat exchange between solid particles and a fluid.
Abstract:
Disclosed herein is an orifice plate comprising one or more plates having orifices disposed therein; the orifices being operative to permit the flow of solids from a moving bed heat exchanger to a solids flow control system; where the orifice plate is downstream of a tube bundle of the moving bed heat exchanger and upstream of the solids flow control system and wherein the orifice plate is operative to evenly distribute the flow of solids in the solids flow control system.
Abstract:
The boundary wall of an air/sand heat exchanger is designed as a porous hollow block wall. Said wall comprises channels (15) which are delimited by channel walls (16). Said channel walls (16) allow the compressed hot air (14) to pass through. Due to the hollow spaces formed by the channels (15), the boundary wall has a low air resistance. The channels (15) may extend in the plane of the boundary wall or at a right angle or any other angle thereto.
Abstract:
This invention provides a method for thermally converting volatile fatty acid (VFA) salts to ketones by mixing dry calcium salts of VFAs with hot heat transfer agent in an evacuated container, thereby causing thermal decomposition of the calcium salts of VFAs to form ketone-containing vapor and calcium carbonate; and separating the ketone-containing vapor from the calcium carbonate and heat transfer agent by condensing a mixture of ketones from the ketone-containing vapor.
Abstract:
L'invention se rapporte à un réacteur solide / gaz caloporteur et réactif (1), comprenant: un conduit hélicoïdal (20) présentant une entrée (28) et une sortie (30), le conduit définissant une piste inférieure hélicoïdale (26) sur laquelle un réactif solide (4) est destiné à glisser de l'entrée vers la sortie dudit conduit hélicoïdal; des moyens (50) permettant d'amener le réactif solide à l'entrée du conduit (20); et des moyens (54) permettant de faire circuler un gaz caloporteur dans le conduit hélicoïdal (20), de la sortie (30) vers l'entrée (28) de ce conduit. De plus, le réacteur intègre un réservoir (2) de réactif solide (4) sous la sortie (30) du conduit hélicoïdale (20), ainsi qu'un convoyeur (8) permettant d'acheminer le réactif d'un point bas (16) du réservoir, vers les moyens (50).