39results about How to "Increase gas holdup" patented technology

The invention relates to a method for directly liquefying coals with a function of maximizing utilization of liquefied residues. The method comprises the following technical steps: preparing coal paste; carrying out hydrotreating and liquefaction on the coal paste; carrying out oil separation treatment on the obtained oil product; carrying out upgrading and hydrotreating on the obtained product; carrying out hot extraction on the residues and then carrying out solid-liquid separation on the residues; and recovering the solvent; and carrying out hydrotreating treatment on the mixture of heavy oils and asphalt materials so as to obtain the final product, then taking the heavy oils as recycled solvent to prepare the coal paste, and the like. The method provided by the invention has the advantages that because of organically combining the liquefaction process and the residue extraction, the utilization of liquefied residues is maximized, the conversion rate of coal is improved, the yieldsof light and middle oils subjected to coal liquefaction are improved by 10 to 60 percent, and the quality of oil is improved, thereby greatly enhancing the economic benefits of direct coal liquefaction plants and improving environment protection; and the method provided by the invention has important economic and social significances, and can widely be applied to the field of coal direct liquefaction.

The invention relates to a glove box with a purification system and usage thereof. The glove box structurally comprises a main box body (1), a transition chamber (2), glove operation openings (3), the purification system (4) and a power system (6); the main box body (1) and the transition chamber (2) are respectively provided with a valve, and are connected with exhaust and charge ports; the glove box is characterized in that the purification system (4) comprises a sealing cover (46) and a purification cartridge (47), and the sealing cover (46) is connected with the purification cartridge (47) through bolts (42); a main air passage (41) and a heater (45) are fixedly arranged in the purification cartridge (47); a helical air passage (43) is arranged on the inner wall of the purification cartridge (47), and purification material fills the purification cartridge (47). The purification and regeneration effect of the glove box is good, and the utilization rate of the purification material is high.

The invention relates to an airlifting multistage staggered circulation flow tower and a circulation flow structure. The structure of the circulation flow tower comprises a tower body, a microbubble gas generator, multistage central tubes, annular clearance toward centre draft tubes, and centre toward annular clearance draft tubes, wherein the multiple central tubes are arranged in the tower body, the annular clearance toward centre draft tubes or the centre toward annular clearance draft tubes are arranged below the multiple central tubes, and the annular clearance toward centre draft tubes or the centre toward annular clearance draft tubes are arranged alternately under the multiple central tubes. The annular clearance toward centre draft tubes introduces rising gas from a lower stage into the central tubes to form a circulation flow of fluid ''rising in central tubes, falling in annular clearances'', the centre toward annular clearance draft tubes introduces gas into the annular clearances between the outside of the central tubes and the tower body to form a circulation flow of fluid ''rising in annular clearances, falling in central tubes''. According to the invention, the mixing and transmission are strengthened; the gas holdup can be increased 20%-40%, and the bubble distribution consistency degree can be increased 10%-30% in a comparison with a traditional multistage airlifting circulation flow tower using only annular clearance toward centre draft tubes.

The invention discloses a hydrogenation method for hydrogen peroxide preparation through an anthraquinone process and a method for producing hydrogen peroxide. The hydrogenation method includes the steps: (1) injecting a working fluid into a slurry containing a hydrogenation catalyst through pores with the average pore size of nanometer size, and carrying out liquid-slurry mixing, to obtain a mixture containing a first slurry; (2) injecting hydrogen gas into the mixture containing the first slurry through the pores with the average pore size of nanometer size, and carrying out gas-slurry mixing, to obtain a mixture containing a second slurry; and (3) under a hydrogenation reaction condition, carrying out a hydrogenation reaction of the mixture containing the second slurry in a slurry-state bed reactor, and thus obtaining a mixture containing a third slurry. With use of the method, higher conversion rate and hydrogenation efficiency of raw materials can be obtained.

The invention relates to the technical field of reactor internals, in particular to a gas-liquid distributor. The gas-liquid distributor comprises a bubble cap, a center pipe and a bubble cap ring; the upper end of the center pipe is arranged in the bubble cap, and is connected with the top wall of the bubble cap, and an annular space is formed between the bubble cap and the center pipe; the lower end of the bubble cap is provided with the bubble cap ring, the bubble cap ring is provided with multiple through holes, and the bubble cap ring is used for filling a gap between the bubble cap and the center pipe. The gas-liquid distributor can enable bubbles to be smaller, improves the capability of purging a catalyst of a material flow, and improves a bed gas volume fraction and material flow impact force, the catalyst near the bubble cap can be rushed up during restarting after shut down, and the possibility that the catalyst enters the annular space of the bubble cap when countercurrent occurs can be reduced to the greatest extent.

The invention discloses a draft tube loop reactor, and relates to an integrated multi-stage series two-stage cone-shaped draft tube reactor sewage treatment apparatus applied to monosodium glutamate industrial wastewater treatment. The reactor comprises a PLC automatic control system, and a three-point water inlet system, a pulse aeration system, a multi-stage series draft tube reaction apparatus,and a membrane intercepting water discharging system which are respectively connected with the PLC automatic control system, wherein the three-point water inlet system is connected with the multi-stage series draft tube reaction apparatus through a pipeline, the bottom of the multi-stage series draft tube reaction apparatus is connected with the pulse aeration system through a pipeline, and one side of the multi-stage series draft tube reaction apparatus is connected with the membrane intercepting water discharging system through a pipeline. The land occupation area is small, the gas consumption is small, the fluid flow condition is good, and the treatment effect is strong.

A process and equipment for preparing arylcarboxylic acid by aralkyl oxidization is disclosed. Said equipment is composed of a combined stirrer axially installed in a pressure container, an oxidizing gas inlet unit between the middle layer and lower layer of stirring blades, and multiple baffles vertically arranged on the inner surface of reactor but with gap between baffle and inner surface. Its advantages are high dispersibility of materials, high gas processing power, high productivity, and low consumption of material and energy.

The invention provides a device and a process for producing 1-octylene by ethylene selective oligomerization, and relates to the field of chemical industry. The device comprises an oligomerization reactor, the circulation pipeline is led out from the top of the oligomerization reactor and returns to the oligomerization reactor, a gas compression device, a heat exchanger and a gas-liquid separator are sequentially arranged on the circulation pipeline, the gas compression device is connected with the top of the oligomerization reactor, and a gas phase outlet and a liquid phase outlet of the gas-liquid separator are respectively communicated with the inside of the oligomerization reactor. A solvent used in the process can comprise a low-boiling-point component and a high-boiling-point component, the low-boiling-point component is selected from C3-C5 hydrocarbons, and the high-boiling-point component is selected from C6-C10 hydrocarbons. According to the device and the process, reaction heat can be effectively and stably removed, precipitation of polyethylene and oligomer generated in the reaction on a heat exchange wall surface is reduced, the cost of a cooling medium is reduced, meanwhile, the reaction temperature is stably controlled, and the reaction efficiency and selectivity are improved.

The invention discloses a seawater desulfurization auxiliary equipment system and a desulfurization method. The system comprises a dust removal device 1, an air separation device 2, a nitrogen compressor 3, a GLS (Gas-Liquid-Solid Chromatograph) seawater heat exchanger 4, a siphon well 5 and an absorption tower 6, wherein the air separation device 2 is connected with the nitrogen compressor 3, the dust removal device 1 and the GLS seawater heat exchanger 4 respectively; the GLS seawater heat exchanger 4 is connected with the absorption tower 6 and the siphon well 5 respectively. By utilizing the air separation device and the nitrogen compressor, most nitrogen gas is enriched; on one hand, the enriched nitrogen gas can be used for other purposes and comprehensive utilization of seawater is realized; on the other hand, internal pressure of flue gas is reduced and accurate control on flow speed of the flue gas is realized; then by utilizing the GLS seawater heat exchanger, the flue gas exchanges heat with circulation seawater entering a heat exchange device, and the temperature of the flue gas is controlled to be an optimal absorption temperature, so that the desulfurization efficiency is improved, the desulfurization time is shortened, and the electricity consumption in operation is reduced.

The invention discloses a side-mounted residual oil hydrogenation emulsification bed micro-interface enhanced reaction device and method. The device comprises a reactor body, at least one bubble breaker laterally arranged on the reactor body, a gas-liquid separator, a circulating pump and a heat exchanger. A gas material and a liquid material are firstly fed into the breakers, the gas is crushed into small micron-sized bubbles, the micron-sized bubbles are violently mixed with the liquid to form a gas-liquid emulsion, and the gas-liquid emulsion enters the reactor body. Due to the characteristics of low speed and difficult coalescence of the micro-bubbles, a gas-liquid emulsification bed reaction system is formed in the reactor body. After the reaction is completed, reaction materials enter the gas-liquid separator to separate gas and liquid, the material liquid is conveyed by the circulating pump and passes through the heat exchanger, one part of the material liquid is extracted, andthe other part of the material liquid enters the corresponding breaker to be used for bubble breaking. The device and the method disclosed by the invention have the advantages of low operation pressure, large gas-liquid mass transfer phase interface area, high apparent reaction speed, high gas utilization rate, low investment, low energy consumption, flexible process and the like.

The invention discloses a method for preparing cubic nano calcium carbonate by a supergravity-micro-interface mass transfer enhanced carbonization method, which comprises the following steps: S1, digesting high-activity calcium oxide and water, screening Ca (OH) 2 slurry obtained by digesting, aging the refined Ca (OH) 2 slurry at room temperature, and adjusting the Ca (OH) 2 slurry obtained by aging to the required concentration; s2, adding glucose into the Ca (OH) 2 slurry, stirring to uniformly mix, adding the refined Ca (OH) 2 slurry into a supergravity-micro interface reactor, adjusting to a carbonization initial reaction temperature, and introducing CO2 until the carbonization reaction is finished to prepare slurry; and S3, performing centrifugal separation on the slurry obtained in the step S2, and drying precipitated solids to obtain a CaCO3 sample. The method has the advantages that the carbonization reaction is enhanced, the carbonization reaction time is shortened, and the cubic nano calcium carbonate with regular morphology and uniform particle size of about 50nm is prepared.

The invention discloses a medium-sized high-mass-transfer circulating type ventilation fermentation tank, and relates to the technical field of biological fermentation. The medium-sized high-mass-transfer circulating type ventilation fermentation tank comprises a fermentation tank body, wherein a cooling injection pipe is arranged in the fermentation tank body; a circulating barrel is also fixedlyarranged in the fermentation tank body; openings are respectively formed in the top and the bottom of the circulating barrel; the bottom of the circulating barrel is also connected with a ventilationpipe; a first end of the ventilation pipe is arranged on the bottom of the inside of the circulating barrel; a second end of the ventilation pipe extends out of the fermentation tank body; the opening of the first end of the ventilation pipe is downward, and is connected with an air distribution head; the top of the air distribution head communicates with the first end of the ventilation pipe; the bottom of the air distribution head is closed; a side wall of the air distribution head is connected with a three-phase mixing rotator through a gas branch pipe; a feeding opening of the three-phasemixing rotator communicates with the gas branch pipe; and a discharging opening of the three-phase mixing rotator is positioned outside the circulating barrel. The medium-sized high-mass-transfer circulating type ventilation fermentation tank aims at providing good engineering conditions for ventilation biological reaction, completely removing mechanical stirring and improving the energy-saving effect in a fermentation process.