17 results about "Bubble column reactor" patented technology

The application discloses a bubble column reactor for preparing methyl propionate, a reaction system and a method. The reactor comprises a bubble column body, a gas distributor and a sieve plate. The application divides the inner cavity of the reactor into multiple spaces through multiple sieve plates, and performs CO segmented feeding on the reaction of synthesizing methyl propionate from a carbonyl group through multiple gas distributors, so that the partial pressure ratio of CO and ethylene in the reactor is reduced, the gas-liquid ratio is obviously reduced, and the reaction conversion rate is obviously improved.

The present invention provides a bubble column reactor, comprising a lower chamber formed in the lower part, a reaction zone formed in the upper part of the lower chamber, a dispersion plate formed between the lower chamber and the reaction zone, and a gas supply pipe connected to the lower chamber to supply gaseous reactants, wherein the gas supply pipe includes an injection section extending into the lower chamber, wherein the injection section includes a plurality of nozzles that inject gaseous reactants onto the lower side of the lower chamber.

The utility model discloses a novel bunt tide, relates to musical instrument technical field, including the tube body, four tuning holes are seted up in the tube body front side bottom, the replaceable contact mouth is provided with three clamping blocks in the array of tube body top end outer wall bottom end outer wall, and the fixed connection of limit stop is provided with in the tube body outer wall close to the position of clamping block, the protection ring is provided with in the tube body bottom end outer wall, the auxiliary mechanism is provided with in the tube body outer wall close to the position of tuning hole, and the auxiliary mechanism includes left -hand auxiliary block and right -hand auxiliary block. The utility model discloses design structure is reasonable, and the left hand index finger and middle finger are placed respectively on the both sides of limit ring B, and the left hand index finger is positioned and is guided to the groove A of placing, and right hand index finger and middle finger hold the tube body and are placed below limit ring C, and right hand thumb is placed in the groove B of placing on limit ring C under the guidance of limit ring C, and contact block A and contact block B support left and right palm while holding the tube body, have the advantage that the hand of player is attached.

The invention relates to a process for the preparation of an unsaturated alcohol of formula (I) comprising subjecting an unsaturated aldehyde of formula (II) to hydrogenation in the presence of a catalyst and a tertiary amine; characterized in that the hydrogenation is carried out in a reactor cascade. Hydrogenation in a cascade of reactors, in particular a cascade of stirred tank reactors, a cascade of bubble column reactors, or a cascade of jet loop reactors reduces the amount of by-products formed and increases the yield and selectivity of the products.

The application discloses a hollow bubble bed reactor, a system and a method for continuously preparing cumene hydroperoxide by oxidizing cumene, and application of the system and the method. The hollow bubble bed reactor comprises a gas-liquid mixing reaction section and a main reaction section from bottom to top. The gas-liquid mixing reaction section comprises a gas feeding port, a liquid feeding port and a micro-bubble mixer. The main reaction section comprises a liquid discharging port and a liquid phase circulating outlet. The micro-bubble mixer comprises a tubular membrane tube. Compared with a traditional bubble column reactor and an air self-oxidation process, the application uses a hollow metal fiber membrane to control the bubble size and dispersity of gas molecules in a liquid phase, so that the safety of the device can be ensured, the conversion efficiency of cumene can be improved, the reaction time can be shortened, cumene hydroperoxide can be continuously produced, higher selectivity of a target product can be obtained, and the application has good industrial application value.

The invention discloses a method for treating biogas slurry through phycomycete co-culture and application of the method. The method comprises the following steps: mixing Sautmophyta and Chinese grease yeast, adding the mixture into pig farm biogas slurry to obtain a treatment system, and culturing the Sautmophyta and the Chinese grease yeast to treat the biogas slurry. Through screening, it is found that the Chinese grease yeast can improve the biogas slurry tolerance of the Sautmophyta, the Chinese grease yeast and the Sautmophyta are combined to treat the biogas slurry, and the biomass and the pollutant removal rate are both higher than those of a contrast treated by single Sautmophyta. Meanwhile, the performance of phycomycetes in a rotating membrane reactor system is superior to that of a bubbling type columnar culture device, the biomass production and pollutant removal capacities of the phycomycetes are higher than that of the bubbling type columnar culture device, the power demand is reduced, and the harvesting cost of algae cells is saved.

Described herein are methods and materials for increasing the scavenging efficiency of hydrogen sulfide collected or produced in subterranean formations during wellbore environments. The methods can include first identifying a location that may include a concentration of gas that may contain high concentrations of H2S gas. The gas may be initially collected and tested to determine the concentration of gas within the gas mixtures. The gas mixture, after testing, may then be passed through a bubble tower reactor that includes a concentration of scavenging material to scavenge H2S gas from the gas mixture and produce a cleaner gas after treatment.

A bubble column reactor is provided comprising a reaction zone in which a reaction of gaseous reactants is carried out in a liquid reaction medium, a first separation section arranged above the reaction zone and into which a first effluent stream rising from the reaction zone is introduced, and a condensation zone arranged above the first separation section, wherein the diameter of the condensation zone is smaller than the diameter of the first separation section.

Paraffin compositions including mainly even carbon number paraffins, and a method for manufacturing the same, is disclosed herein. In one embodiment, the method involves contacting naturally occurring fatty acid / glycerides with hydrogen in a slurry bubble column reactor containing bimetallic catalysts with equivalent particle diameters from about 10 to about 400 micron. The even carbon number compositions are particularly useful as phase change material.

The utility model discloses a bubble tower reactor with a stop lever internal component, which comprises a tower body, a gas inlet arranged at the lower part of the tower body, a gas distributor arranged in the tower body and connected with the gas inlet, and an internal component arranged above the gas distributor in the tower body, the inner component comprises a fixing ring and stop levers which are arranged in the fixing ring at intervals in parallel, the fixing ring is installed on the inner wall of the tower body, the circumference of the fixing ring is attached to the inner circumference of the tower body, the stop levers are horizontally arranged, the two ends of each stop lever are connected to the inner wall of the fixing ring respectively, and the space between every two adjacent stop levers forms a compartment for air and liquid to flow through. And the bottom surface of the stop lever adopts a V-shaped structure which is gradually enlarged from bottom to top. According to the utility model, bubbles are cut in the axial direction to prevent coalescence and are separated in the radial direction to prevent aggregation through components in the stop lever, so that the bubbles are distributed more uniformly in liquid, the gas-liquid contact area is increased, the gas-liquid mass transfer rate is improved, and the reaction process is strengthened.

This invention relates to a high-throughput microchannel stepwise conversion process for preparing carbonates. The process includes: feeding CO2 and epoxides into a first-stage bubble column reactor at the bottom, where they react under the action of an ionic liquid catalyst. The reaction product is separated, and the unreacted epoxide-containing liquid phase with CO2 enters a second-stage deep-channel reactor for further reaction, thereby achieving the stepwise conversion and efficient synthesis of cyclic carbonates. The continuous production process of cyclic carbonates provided by this invention is reasonable, significantly reducing reactor volume, shortening reaction residence time, achieving process intensification, and simplifying the process. It is a highly efficient and feasible continuous synthesis process for cyclic carbonates with good industrial application prospects.

The invention discloses a method for producing a deuterated benzene compound by using a bubble tower reactor. The method comprises the following steps: S1, preheating heavy water and a benzene compound to obtain raw material steam; s2, introducing the raw material steam into a bubble tower reactor filled with an organic acid catalyst, and carrying out hydrogen-deuterium exchange reaction to obtain a reaction mixture; and S3, carrying out post-treatment on the reaction mixture to obtain the deuterated benzene compound. The method is high in yield, high in deuteration degree, free of waste acid and suitable for industrial production.

The application discloses a gas distribution unit, a bubble bed reactor applying the unit and a corresponding reaction method. The gas distribution unit comprises: a first gas distributor arranged below a catalyst bed and bubbling upward; and a second gas distributor arranged inside the catalyst bed, the second gas distributor bubbling downward. The application can make the gas phase feed more uniformly distributed through the gas distribution unit and the corresponding reactor, effectively improve the conversion rate and selectivity of the reactor, and avoid the local concentration of the gas-liquid-solid three phases being too high and the catalyst deactivation phenomenon caused by the intense reaction heat release.

The invention relates to a multi-section tandem type gas-liquid parallel flow bubbling reactor which adopts a two-layer barrel structure, an outer barrel is a liquid channel, an inner barrel is a bubbling reactor, and the bubbling reactor is suitable for slow gas-liquid reaction easy to foam. In order to improve the reaction efficiency and prevent liquid phase backmixing, the whole bubble tower reactor is divided into a plurality of sections, the adjacent sections are separated by partition plates, and liquid overflowing from the inner cylinder of the upper section flows into the lower section through a downcomer. Gas passes through the outer barrel from the outside of the outer barrel through a plurality of parallel pipelines, is mixed with liquid flowing out of the downcomer in a rotational flow manner, and then is introduced into the inner barrel from the side wall of the bottom of the inner barrel together with the liquid. The bubbling reactor provided by the invention effectively solves the problems of liquid phase backmixing and fluid foaming, can ensure that a liquid phase obtains a high conversion rate, and can be operated under a wide range of gas / liquid flow velocity ratio.

The present invention provides a bubble column reactor comprising a reaction zone in which a gaseous reactant is reacted in a liquid reaction medium, a separation zone arranged above the reaction zone and into which a first gas stream rising from the reaction zone is introduced, and a condensation zone arranged above the separation zone and into which a second gas stream rising from the separation zone is introduced, wherein the diameter of the condensation zone is greater than the diameter of the separation zone.

Described herein are methods and materials for increasing the scavenging efficiency of carbon dioxide, such as produced during combustion operations. The gas may be initially collected and tested to determine the concentration of gas within the gas mixtures. The gas mixture, after testing, may then be passed through a bubble tower reactor that includes a concentration of scavenging material to scavenge CO2 gas from the gas mixture and generate a cleaner gas and a carbon-rich liquid after treatment.

The utility model relates to the technical field of micro bubble generation, and discloses a bubble reducing device and a micro bubble tower reactor. The cutting disc is provided with an input side, an output side and an air hole penetrating from the input side to the output side; and the ultrasonic assembly is arranged on the input side of the cutting disc. When the bubble reducing device is arranged in the micro-bubble tower reactor, the fixing part is fixed in the micro-bubble tower reactor, bubbles formed after coalescence of the micro-bubbles are located on the input side of the cutting disc, and the bubbles are broken under the ultrasonic action of the ultrasonic assembly, namely are subjected to primary reducing, then flow towards the output side of the cutting disc and penetrate through the air holes, so that the bubbles are formed in the micro-bubble tower reactor. The air bubbles are cut under the action of the rotating cutting disc and are broken again, that is, the air bubbles are subjected to secondary hole shrinkage, the sizes of the air bubbles subjected to two-time hole shrinkage are greatly reduced, and the influence of the sizes of the air bubbles on the reaction effect is reduced.