48results about How to "Avoid local hotspots" patented technology

The invention discloses a self-supporting nickel phosphide catalyst and a preparation method and application thereof. The self-supporting nickel phosphide catalyst is a nickel phosphide catalyst obtained by in-situ growing of a nickel oxalate or nickel hydroxide crystal layer on a framework matrix through a hydrothermal method and performing phosphating while secondary forming is not needed, and the nickel phosphide catalyst is composed of the framework matrix and a nickel-phosphorus compound, wherein the nickel-phosphorus compound is at least one of Ni3P, Ni12P5, Ni2P and Ni5P4, total mass ratio of the nickel-phosphorus compound is 0.1-50%, and the balance is the framework matrix. Experiments show that the self-supporting nickel phosphide catalyst is high in stability and thermal conductivity, easy to form and fill, high in flux and low in pressure drop, especially has the advantages of high low-temperature activity, high dimethyl oxalate conversion rate and high methyl glycolate selectivity and can be used as a reaction catalyst for hydrogenating dimethyl oxalate to prepare methyl glycolate.

The invention provides a microchannel reaction device which comprises an upper sealing plate, a lower sealing plate and at least one microchannel reactor located between the upper sealing plate and the lower sealing plate. The microchannel reactor comprises a microchannel reaction plate, a first heat exchange channel plate, a second heat exchange channel plate, a third heat exchange channel plate and a fourth heat exchange channel plate, the first heat exchange channel plate and the second heat exchange channel plate are located on the upper surface of microchannel reaction plate, and the third heat exchange channel plate and the fourth heat exchange channel plate are located on the lower surface of the microchannel reaction plate. The microchannel reaction plate comprises an inlet, a preheating channel connected with the inlet, a reaction microchannel and an outlet connected with the reaction microchannel, the preheating channel is located between the first heat exchange channel and the third heat exchange channel, the reaction microchannel is connected with the preheating channel and located between the second heat exchange channel plate and the fourth heat exchange channel plate, and an olefin catalyst is arranged in the reaction microchannel. According to the microchannel reaction device, a microchannel reaction system and a method for preparing olefin, the problems that when olefin is prepared in the prior art, the selectivity of olefin is reduced due to a local hot spot, and the catalyst fails are solved.

The invention belongs to the field of petrochemical industry and coal chemical industry processes, and particularly relates to a tinpot heavy oil processing and treating method. The method includes: removing solid residue and water in tinpot heavy oil; mixing the tinpot heavy oil with hydrogen, and feeding a mixture into a fluidized bed hydrogenation reactor for hydrogenation; directly flashing a reaction product to obtain hot high-component gas and hot high-component oil; after heat exchange cooling of obtained hot high-component gas, hydrorefining the hot high-component gas to obtain refined hot high-component gas; after depressurizing of obtained hot high-component oil, filtering, pressurizing the hot high-component oil, and mixing with hydrogen for hydrorefining and hydrocracking to obtain cracked hot high-component oil; fractionally distilling the refined hot high-component gas and the cracked hot high-component oil to obtain dry gas, liquefied gas, naphtha, diesel and tail oil products. By using the method, high-quality light oil products can be produced by adopting tinpot heavy oil, the tinpot heavy oil is utilized to greatest extent, product liquid yield is increased, and the processing problem of heavy components in the tinpot heavy oil is solved.

The invention discloses a method for preparing propylene by using methanol. The method comprises the steps of: feeding methanol into a first fixed bed reactor to obtain a first product flow; mixing the first product flow with a reactant diluting agent and feeding the mixture in a first moving bed reactor to obtain a second product flow; feeding a C2-C4 hydrocarbon mixture without propylene, which is from a separating device, into a second moving bed reactor to obtain a third product flow; feeding a C5+ hydrocarbon mixture, which is from the separating device, into a second fixed bed reactor to obtain a fourth product flow, wherein the separating device is used for separating the second, third and fourth product flows so as to separate out products: propylene, the C2-C4 hydrocarbon mixture without propylene, and the C5+ hydrocarbon mixture. The invention further discloses a system for preparing propylene by utilizing the method, and the problems in the existing technology for preparing propylene by using methanol that propylene yield is low, a catalyst is likely to coke and deactivate and is complicated to regenerate, and the energy consumption of devices is high can be solved.

The invention discloses an immersed liquid cooling sintering porous capillary core coupling micro-channel heat dissipation device. An exhaust micro-channel copper substrate comprises a square boss and a circular soaking table, the boss is located at the center position of the upper side of the soaking table, a *-shaped exhaust micro-channel is formed in the boss through linear cutting, and a boiling-evaporation sintering porous capillary core is in the shape of a prismatic table. The top of the boiling-evaporation sintering porous capillary core is provided with a porous capillary core conical groove, the bottom of the boiling-evaporation sintering porous capillary core and the top face of the polished exhaust micro-channel copper substrate are in contact with each other and are sintered into a whole, a heat conduction piece adheres to the bottom of the soaking table, and a chip heat source adheres to the bottom of the heat conduction piece. The chip heat source is embedded on a packaging substrate, and a heat insulation silica gel pad capable of nesting the heat conduction piece and the chip heat source between the soaking table and the packaging substrate is tightly attached to the packaging substrate. According to the immersed liquid cooling sintering porous capillary core coupling micro-channel heat dissipation device, the phase-change heat transfer capacity and the working stability of the device under medium-high heat flow can be remarkably improved.

The invention discloses a hydrogen-oxygen composite reactor, and belongs to the field of hydrogen energy application. The hydrogen-oxygen composite reactor is provided with a plurality of heat exchange plates and reaction plates which are alternately arranged from left to right, and the contact surfaces of the heat exchange plates and the reaction plates are tightly attached; a plurality of first through holes are formed in the two ends of the heat exchange plates, a plurality of second through holes are formed in the two ends of the reaction plates, the first through holes and the second through holes are overlapped to form a plurality of channels, and the channels comprise a cooling water channel, an air channel, a hydrogen channel and a flue gas channel; a water flowing channel is arranged in the middle of each heat exchange plate and is communicated with the corresponding cooling water channel, and an airflow channel is arranged in the middle of each reaction plate and is communicated with the corresponding air channel, the corresponding hydrogen channel and the corresponding flue gas channel; and the reactor further comprises a catalyst film structure, and the catalyst film structure is arranged on the middle part of the reaction plate and is used for catalyzing the introduced air to react with hydrogen. The temperature distribution of the temperature field in the hydrogen-oxygen composite reactor is uniform, and local hot spots are avoided.

The present invention discloses a method for hydrogenation of benzene to prepare cyclohexane in a magnetically stabilized bed. The method comprises steps of: first loading sodium borohydride reduced Ni2 + and metal cation additive on a magnetic catalyst, and then loading the magnetic catalyst into the reaction unit of the magnetically stabilized bed, and controlling reaction conditions of a ratio of hydrogen to benzene, a space velocity, and a magnetic field strength to enable a bed layer to form a magnetically stabilized state for hydrogenation of benzene to prepare cyclohexane. By using the magnetically stabilized bed to control the bed layer fluidization state for hydrogenation of benzene to prepare cyclohexane, the method of the present invention prevents local hot spots from emerging in the bed layer, reduces catalyst deactivation, maintains a relatively high benzene conversion rate and cyclohexane selectivity, and substantially increases the service life of the catalyst; and the magnetic field can be used to separate and recover the catalyst, thus reduce production costs.

The invention provides a combustion chamber, and relates to the field of aero-engines. The combustion chamber comprises a combustion chamber head and a flame tube. In addition, the combustion chambercomprises a splash plate and a first-stage oil supply system, wherein the splash plate is arranged between the combustion chamber head and the flame tube, and connected to the periphery of the combustion chamber head; a cavity is formed in the splash plate, and an oil outlet hole communicating with the cavity and the combustion chamber head is formed in the side wall of the combustion chamber head; and the first-stage oil supply system is arranged at the end, away from the combustion chamber head, of the splash plate, communicates with the cavity , and is used for injecting fuel oil into the cavity. According to the combustion chamber, the wall face cooling effect can be enhanced, and the production cost can be reduced.

The invention discloses a heavy oil hydrogenation reactor and a hydrogenation method. The reactor comprises a reactor outer cylinder, an inner cylinder I and an inner cylinder II, the inner cylinder I and the inner cylinder II are arranged in the axial direction of the reactor, the cross sectional area of the inner cylinder I is gradually reduced from top to bottom, and the cross sectional area of the inner cylinder II is gradually increased from top to bottom; an annular space is formed among the inner cylinder I, the inner cylinder II and the reactor outer cylinder body; wherein the inner cylinder I is filled with a hydrogenation catalyst I, the annular space is filled with a hydrogenation catalyst II, and the activity of the hydrogenation catalyst I is higher than that of the hydrogenation catalyst II. The viscosity of the material is reduced through the viscosity reduction assembly arranged in the inner cylinder II, and then the material sequentially passes through the inner cylinder I and the annular space to generate hydrogenation reaction, so that the mass transfer process driving force and reaction rate of heavy oil liquid phase hydrogenation reaction are improved, the contact time of the reaction material and different active catalysts is controlled, and catalyst surface coking is slowed down; the deep cracking reaction of the light oil is reduced, and the liquid yield and the heavy impurity removal conversion rate in the heavy oil liquid phase hydrogenation reaction process are improved.

The embodiment of the invention provides a data center device which comprises a machine room and a refrigerating system, wherein at least one cabinet is arranged in the machine room, multiple layers of loads are arranged in the cabinet, and the refrigerating system comprises at least one row-level multi-connected air conditioner. Each row-level multi-connected air conditioner comprises an indoor unit and an outdoor unit which are connected, the indoor unit is located in the machine room, and the outdoor unit is located outside the machine room; the indoor unit comprises a plurality of sub indoor units which are connected in parallel; the indoor unit and the cabinet are arranged in parallel, and the multiple sub indoor units are opposite to multiple layers of loads in the cabinet so that cold air blown out of the multiple sub indoor units can be blown to all the layers of loads. Therefore, the problems that an existing data center device is poor in refrigeration effect and wastes energy are solved.

The invention belongs to the technical field of ion batteries, and particularly relates to a flexible composite phase change material, a preparation method and application thereof, a battery heating piece and an ion battery pack with a low-temperature heat management system. The invention provides a flexible composite phase change material. The flexible composite phase change material comprises the following components in parts by mass: 20-35 parts of spherical conductive filler, 1-5 parts of multi-dimensional conductive filler, 20-30 parts of polymer matrix and 40-50 parts of organic phase change material. The flexible composite phase change material provided by the invention has the characteristic of flexibility, and can be well attached to the surface of a battery, so that the heat transfer resistance is reduced, and local hot spots are avoided; meanwhile, good conductivity is achieved, rapid heating can be achieved by applying small voltage, and therefore the battery can be rapidly and efficiently preheated; and constant-temperature heating can be achieved, and higher safety is achieved.

The invention discloses a cabinet temperature control method and system. The method comprises: a monitoring system judging whether a temperature control system is normal or not; if the temperature control system is normal, the monitoring system judging whether the power supply system is normal or not; if the power supply system is normal, the monitoring system collecting the power of load equipment and the rated refrigerating capacity of a temperature control system; the monitoring system calculating the refrigerating capacity required by the temperature control system according to the power of the load equipment; the monitoring system calculating the refrigeration output capacity value of the temperature control system according to the refrigerating capacity required by the temperature control system and the rated refrigerating capacity of the temperature control system; and the monitoring system feeding back the refrigeration output capacity value to the temperature control system, so that the temperature control system controls refrigeration output of the refrigeration equipment according to the refrigeration output capacity value. The cabinet temperature control system can track the real-time change of the power of the load equipment and timely adjust the temperature control refrigeration capability to avoid local hot spots.

The invention discloses an airflow organization adjusting system and adjusting method for eliminating local hot spots of a modular machine room, the airflow organization adjusting system comprises a plurality of cabinets and a control terminal, the plurality of cabinets are respectively connected with the control terminal, the top of each cabinet is provided with an airflow adjusting device, and the bottom of each cabinet is provided with an inlet shutter. The airflow adjusting device and the inlet shutter are connected with the control terminal, a first temperature sensor, a first humidity sensor, a first speed sensor and a first alarm are arranged on the airflow inlet, and a second temperature sensor, a second humidity sensor, a second speed sensor and a second alarm are arranged on the airflow outlet. The uniform and adjustable air flow adjusting device is arranged at the top of the cabinet, the inlet shutter capable of being independently adjusted is arranged at the bottom of the cabinet, hot plume in the cabinet is used for adjusting air flow distribution in the cabinet, and balance is achieved, local hot spots are avoided and air flow distribution is promoted to be balanced by changing resistance of the cabinet.

The invention discloses a mapping method of a virtual data center. The mapping method comprises the steps of ranking racks in an ascending order according to the outlet temperature of each rack; searching a server which meets the resource requirement of the current virtual machine and is not occupied by other virtual machines of the virtual data center where the current virtual machine is locatedin the rack with the lowest outlet temperature; if the server is found, mapping the current virtual machine to the server; if not found, based on the arrangement sequence of the racks after ascendingarrangement, searching a server which meets the resource requirement of the current virtual machine and is not occupied by other virtual machines in the virtual data center where the current virtual machine is located in the next rack until the server which meets the resource requirement of the current virtual machine and is not occupied by other virtual machines in the virtual data center where the current virtual machine is located is found; and mapping each virtual link of the virtual data center after each virtual machine of the virtual data center finishes mapping. According to the method, energy consumption and cost can be reduced while local hotspots of the data center are avoided.

The invention provides a web crawler method for financial warehouse warrant risk control. Double bloom filter keyword matching is adopted, and the web crawler information comprising the cargo information result is screened rapidly; different classes of cargo are sorted accurately on the basis of a classification matching manner, the regulation is compared by the combination of the threshold value, and new cargo classes are added automatically; on the basis of an information mechanism, load balancing of front and rear end tasks of the whole processing process is realized, the controllability and the efficiency of the processing process are ensured to be maximum, and local hot spots are prevented. With the adoption of the technical scheme, efficient crawling and accurate screening of financial warehouse warrant mortgage cargo information can be realized.

The invention discloses a dense-phase fluidization reaction control device and method; the dense-phase fluidization reaction control device comprises a dense-phase fluidization reaction gas supply system and a dense-phase fluidization reaction control system; the dense-phase fluidization reaction gas supply system comprises a feed gas I unit, a feed gas II unit, an inert gas unit and a dense-phasefluidization reaction gas distribution unit; the dense-phase fluidization reaction control system comprises a dense-phase bed fluidization monitoring unit, a fluidization monitoring data calculationand analysis unit, an expert judgment unit, a target controller unit and other instrument signal units. The invention further provides the dense-phase fluidization reaction control method based on computer autonomous learning; the flow and the reaction activity of the feed gas entering the dense-phase zone of the reactor are controlled by analyzing the flow characteristics of a reaction bed layer,and then the dense-phase fluidization reaction process is controlled. The device and method are high in automation degree and efficient and convenient in data analysis, have the characteristic of machine learning, and have a wide application prospect in the field of dense-phase fluidization reaction control.