80results about How to "Reduce outlet pressure" patented technology

The invention discloses a start-up method for an ex-situ prevulcanization secondary activity center hydrogenation catalyst. After resistance to air loss of a device is qualified, circulating hydrogen compressor working load is adjusted to 0-20% of a maximum load, the catalyst reacts at a low temperature to release heat; when the bed layer temperature rise to 60-150 DEG C, start-up activation oil is introduced, the circulating hydrogen compressor working load is adjusted to 60-100% of the maximum load for wetting of the catalyst; the start-up activation oil is cycled in a reaction system closed path, the catalyst bed temperature is risen to 180 to 230 DEG C by heat exchange; a proper amount of olefin-enriched naphtha is added into the start-up activation oil, the catalyst bed temperature is risen to 300-380 DEG C to complete start-up activation. The start-up method, in the premise of no influence on the use properties of the secondary activity center hydrogenation catalyst, can better use the catalyst characteristics, reduce the device energy consumption, and reduce the device investment cost, and the start-up process can be simplified.

The invention discloses a nozzle, an ejector based on the nozzle and having an adjustable flow characteristic, and application of the ejector. The nozzle comprises a nozzle body, a small nozzle, a large nozzle and an elastic part; a thin and long hollow pipe with a valve is adopted as the small nozzle, and the elastic part is arranged between the set of large nozzle and the set of small nozzle; one end of the elastic part jacks the valve part of the small nozzle, and the other end of the elastic part jacks the large nozzle; and the elastic part can change the position of the valve of the smallnozzle under the effect of to-be-ejected gas, and then a flowing path of the to-be-ejected gas is controlled. The supply quantities of hydrogen and recycled hydrogen are automatically controlled by the nozzle according to system loads; when the low load exists, the small nozzle acts, the pressure of a nozzle outlet is small, the recovery rate of the recycled hydrogen is high, and the hydrogen utilization rate is increased; when the medium-high loads exist, the two sets of nozzles act simultaneously, and the large nozzle is used for enlarging the circulating area to provide the larger fuel flow; and the small nozzle is used for increasing the ejecting speed to improve properties of the ejector.

The invention discloses a hydraulic control device for a hybrid power transmission, wherein a main oil-way is respectively connected with a lubricating oil-way, a clutch control oil-way and an electromagnetic valve control oil-way, the main oil-way is connected with a cooling and lubricating oil-way through an unloading valve, the cooling and lubrication oil-way is connected with a valve core control oil port of the unloading valve at the same time, the oil outlet of the unloading valve is respectively connected with an oil inlet of an overflow valve and the clutch control oil-way, the oil outlet of the overflow valve is connected with the lubricating oil-way, the clutch control oil-way is respectively connected with oil inlets of proportional reducing valves A and B, a reducing valve is arranged between the electromagnetic valve control oil-way and the main oil-way, the electromagnetic valve control oil-way is respectively connected with valve core control oil ports of the proportional reducing valves A and B through oil-saving holes, and is respectively connected with a switching electromagnetic valve and a halt locking hydraulic cylinder through the oil-saving holes. The hydraulic control device has simple structure, can rapidly lubricate the transmission, and is suitable for the hydraulic control of the hybrid power transmission.

The invention discloses a supercritical compressed air energy storage system. The supercritical compressed air energy storage system comprises a supercritical liquefaction subsystem, an evaporation expansion subsystem, a grading cold accumulation subsystem, a heat storage and heat exchange subsystem and a cold energy compensation subsystem, wherein the grading cold accumulation subsystem is used for realizing grading storage and release of cold energy and improving the recycling efficiency of the low-temperature cold energy in the energy release and energy storage processes so as to improve the system circulation efficiency. According to the supercritical compressed air energy storage system, additional cold energy and heat energy input are not required to be supplied from the outside, theadvantages of being high in circulation efficiency, low in cost is low, capable of achieving independent operation, environment-friendly, not limited by terrain conditions and the like, and thereforethe supercritical compressed air energy storage system is suitable for large-scale commercial application.

The invention relates to a bandwidth-adaptive video conference. A video mode is dynamically selected and the scalable video CODEC (SVC) technology is combined with the P2P technology. Besides, an internet service mode is used to provide a virtual video conference room and a desktop video service for an enterprise, thereby saving cost for construction of a video conference room by the enterprise. Moreover, a hiring mode is employed, so that a video conference can be held anywhere at any time.

The invention provides a wet-process flue gas desulfurization tower to well solve the technical problems of poor desulphurization effect, unreliable equipment operation caused by nozzles obstructed by foreign materials such as fouling fragments and the like, poor spray removal effect after flue gas washing and desulphurization which are all caused by poor slurry atomization effect of a present industrial kiln and boiler flue gas spraying washing type desulfurization tower. According to the invention, desulphurization efficiency and operational reliability are raised by improving the desulphurized slurry atomization effect and nozzle passageways; due to improvement of the nozzles, pressure requirements on desulphurized slurries are low, nozzle blocking probability is reduced, and removal rate of sulfur dioxide is raised; and a routine cyclone dehydrator structure is improved, rising cyclone diameter of flue gas is increased, the flue gas dehydration and demisting effect after washing is raised, and corrosion and dirt deposition of downstream flues and equipment are decreased. The wet-process flue gas desulfurization tower provided by the invention has characteristics of high desulphurization efficiency, good spray removal effect, simple structure, high operation reliability and the like, can be adopted to effectively reduce investment and operation costs, and is suitable for a wet flue gas desulphurization technology.

A hydraulic control device for a hybrid transmission is designed such that the cooling and lubrication oil line of the system are in oil communication even before the main oil line pressure reaches the set pressure of the overflow valve, so as to lubricate the transmission as soon as possible. The hybrid transmission design further provides an overpressure protection for the cooler. The hybrid transmission further uses a proportional pressure reducing valve to control the lock-up clutch, thus making for the improvement of its braking performance.

A pot distillation system, in particular for whiskey, includes a distillation bubble with a base equipped to heat an alcoholic liquid, and a top removing alcohol vapors. The alcoholic liquid in the base is heated by a heating unit having a heat exchanger which is in thermal contact with the alcoholic liquid and heated by water vapor. A condenser having a cooling water circuit recirculating cooling water across the condenser condenses the alcohol vapor supplied from the top. The cooling water circuit includes a separator which removes water vapor from the cooling water circuit. The water vapor removed by the separator is pre-compressed in a mechanical compressor and supplied to an intake port of a steam jet pump which is driven by water vapor from a water vapor source and which further compresses the pre-compressed water vapor, and the steam jet pump supplying the further compressed water vapor to the heat exchanger for heating same.

A pumping system is provided which is a mobile, vehicle-mounted pumping system, such as for water or fuels, which mounts on a vehicle and may be used for various applications. The pumping system operates a drive system and control system for liquid pumps almost exclusively by hydraulic fluid pressure.

The invention relates to a feeding nozzle of a catalytic cracking unit of an oil refinery. The feeding nozzle comprises an inner tube steam distributor 3, circumferential steam distributing holes 4, an outer tube 5, an annular space mixing cavity 6, top steam distributing holes 7, mixing cavities 8, 10, 12 and 14, reinforcing mixing baffles 10 and 13, a nozzle base body 15, nozzle groups 16 and the like, wherein a spraying section comprises specially designed nozzle groups 16 so as to form flat sector mist spray consisting of multistrand micro jets, thus well covering section of a lifting tube; furthermore, the catalyst can pass through the micro jets, so that the contact area of the oil mist jet flow of the multistrand micro jets and the catalyst is larger, the oil and the catalyst can well contact; as the upstream catalyst and the oil gas penetrate through the sector mist spray and eject through clearances between the micro jets, the catalyst and the oil gas cannot well contact, the catalyst cannot form eddy on the back of the sector jet flow, the hidden danger that the oil gas rewinds and touches the wall surface of the lifting tube so as to coke is eliminated.

The invention discloses an energy-saving heat pump type intermediate-temperature spray evaporation system which comprises an evaporation and separation chamber, a condenser, an evaporator, a water cooler, a heat pump, an axial-flow blower, a circulating water pump, a throttling device and a gas-liquid separator/purifier. The interior of the evaporation and separation chamber is divided into an evaporation chamber and a separation chamber through a separation plate. The evaporation chamber and the separation chamber are communicated through a hot air outlet between the top of the separation plate and the evaporation and separation chamber. The axial-flow blower is mounted on the separation plate, a cold water inlet is reserved in the separation plate, and the hot air outlet is reserved in the top of the separation plate. A liquid storage area is arranged at the bottom of the evaporation chamber, and a spraying system is mounted at the top of the evaporation chamber. The liquid storage area of the evaporation chamber is connected with the spraying system at the top of the evaporation chamber through the circulating water pump and the condenser. The evaporator and the water cooler are sequentially arranged in the separation chamber from top to bottom. The evaporation chamber is connected with an air inlet of the heat pump through the gas-liquid separator/purifier. An air outlet of the heat pump is connected with the condenser. The condenser is connected with the evaporator through the throttling device. The system is small in occupied area, low in running cost, flexible and convenient to operate and suitable for being used and popularized.

The invention discloses an online pipe anti-blocking method for a utility boiler primary air pipe. The method comprises the steps that firstly, leveling is carried out on the air speed of primary air and pulverized coal concentration of each coal mill; secondly, a coal pulverizing system test is carried out on the coal mill, and a pulverized coal grain size database is established; thirdly, a mathematic model is established, according to parameters in operation collected in real time and the pulverized coal grain size database, the minimum fluidizing velocity of pulverized coal conveying under the theory state is calculated, a theoretical value is corrected according to the actual operation condition, the corrected minimum fluidizing air velocity is compared with the primary air speed measured online, and guiding opinions of the primary air speed are given. The online pipe anti-blocking method for the utility boiler primary air pipe can avoid the defects brought by too high primary air speed that pulverized coal ignition is delayed, the electric current of a primary air fan is too large, and air leakage of an air preheater is increased, and achieve energy saving and consumption reducing under the condition that the primary air pipe is not blocked.

The invention discloses a system and method for improving the separation efficiency of an airborne hollow fiber membrane, and belongs to the technical field of aviation systems, and aims to reduce thepressure of an oxygen-enriched gas outlet and increase the internal and external pressure difference of a hollow fiber membrane by taking engine bleed gas as an active flow to eject the oxygen-enriched gas at the waste gas outlet of the hollow fiber membrane, thereby improving the separation efficiency of the airborne hollow fiber membrane. Compared with the prior art, the technical scheme provided by the invention is simple, the problems of low separation efficiency and the like caused by insufficient bleed air pressure of an aircraft engine in the actual application of the hollow fiber membrane inerting technology are solved, the application range of the inerting technology is effectively expanded, other supercharging devices do not need to be additionally arranged, the system reliability is fully guaranteed, and the system is convenient to operate and implement.

A vacuum pump system comprising a plurality of vacuum pumps which are connected to one another in parallel and are each connected on an inlet side to a chamber, having an outlet line which is connected on the outlet side of the vacuum pumps, and an intermediate line which connects the inlet side of at least one vacuum pump to the outlet line, wherein all the vacuum pumps are connected in parallel during a pumping-out period and at least one of the vacuum pumps is connected in parallel with the other vacuum pumps as a backing pump during an idle period.

The invention provides an alkylation method including a step of contacting an olefin source, a benzene source and an alkylation catalyst in an alkylation reactor under an alkylation reaction condition, wherein the alkylation reactor includes at least one reaction zone, initial reaction temperature in at least one reaction zone after a first reaction zone being lower than that in the first reaction zone by more than 10 DEG C. A multi-zone reaction with partial or complete temperature decreasing manner is employed, so that selectivity of a target product, alkyl benzene, is increased. The conversion of the raw material, olefin, is higher than 99% while the selectivity of generating the alkyl benzene reaches more than 99%. The product has less purity, for example, the content of dimethylbenzene in an ethylbenzene product is less than 10 ppm.

The invention relates to an injection type refrigeration cycle system and a utilization method thereof. The injection type refrigeration cycle system comprises a generator, an injector, a condenser, a throttle valve, an evaporator, a circulating pump, a liquid storage container, a first valve and a second valve, wherein the generator, the injector, the condenser, the circulating pump, the liquid storage container and the first valve are sequentially connected end to end to form a first circulation loop; the injector, the condenser, the throttle valve and the evaporator are sequentially connected end to end to form a second circulation loop; the generator, the second valve, the liquid storage container and the first valve are sequentially connected end to end to form a third circulation loop; and the position of the liquid storage container in the vertical direction is higher than the position of the generator in the vertical direction. According to the injection type refrigeration cycle system, the outlet pressure of the circulating pump is far lower than the outlet pressure of a circulating pump in a traditional injection type refrigeration cycle system, the efficiency of the circulating pump is higher, the size of the integral refrigeration cycle system is effectively decreased, and the practicability is higher.

The invention discloses a mechanical-electrical liquid mixing soft start stepless speed regulator. One end of a high-speed input shaft is connected with a rotating shaft of a main motor, and the other end thereof is connected with external teeth of a high-speed solar wheel shaft so as to form backlash flotation; the high-speed solar wheel shaft is connected with a low-speed input shaft by being meshed with a high-speed planet wheel; the other end of the low-speed input shaft is connected with a low-speed output shaft which extends out of a speed regulator box body, and is taken as an output shaft of the speed regulator to be connected with load; a high-speed planet wheel shaft is externally fixedly provided with the high-speed planet wheel which is meshed with a high-speed internal gear; the high-speed internal gear is also meshed with a high-speed gear coupling which is fixedly connected with a big bevel gear of a speed adjusting mechanism; the big bevel gear of the speed regulating mechanism is connected with a hydraulic rotating functional element by a small bevel gear shaft of the speed regulating mechanism, an intermediate gear of the speed regulating mechanism and a side gear of the speed regulating mechanism; and the tail end of the small bevel gear shaft of the speed regulating mechanism is connected with the input shaft of an auxiliary motor. The speed regulator has high transmission efficiency, low noise, reliable performance and low cost.

The embodiment of the invention discloses a parallel system bus architecture, which comprises a master control board and at least two service boards. In the downlink direction, the master control board and the service boards are in point-to-point connection with each other through a bus; and in the uplink direction, the master control board and the service boards are in multipoint-to-single-point connection with each other through the bus. The downlink direction refers to link from the master control board to the service boards, and the uplink direction refers to link from the service boards to the master control board. Accordingly, the embodiment of the invention also discloses a port configuration management method in the parallel system bus architecture. By implementing the parallel system bus architecture and the port configuration management method thereof, the user bandwidth requirement is satisfied by adopting uplink/downlink asymmetric bus architecture, so as to reduce the wire outgoing pressure of the master control board and the back board and reduce the number of gathered chip pins.

The invention relates to a mechanical-electrical-hydraulic compound soft-starting/stepless speed regulating drive mechanism on high-power heavy-duty equipment. The mechanism comprises a power input shaft sleeved on a planet carrier output shaft in a sliding manner. One end of the power input shaft is connected with a main electric motor, and the other end thereof is fixed in an inner hole of the planet carrier output shaft and is connected with a sun wheel shaft positioned in the inner hole of the planet carrier output shaft so as to form gear clearance float; at least two groups of planet wheels are fixed around the planet carrier output shaft through planet wheel shafts at one circle in a winding manner; each planet wheel is meshed with the sun wheel shaft peripherally, and is meshed with an inner ring gear positioned outside the planet carrier output shaft at the same time; a gear coupling which is connected with the inner ring gear along the gear direction to form radial gear clearance float is also included; a bevel gear fixed on the gear coupling is meshed with a conical tooth shaft connected with a low-power helper motor; and a bevel gear shaft for connecting the bevel gear and a hydraulic rotation function element are also arranged on the gear coupling at the same time. The mechanical-electrical-hydraulic compound soft-starting/stepless speed regulating drive mechanism integrates the functions such as soft-starting/stepless speed regulating, etc., and has the advantages of high transmission efficiency, small noise, compact structure, reliable performance and low cost.

The invention discloses a liquid phase adsorption separation system, and belongs to the technical field of adsorption separation. The liquid phase adsorption separation system comprises a liquid phaseadsorption separation circulating tower, liquid phase adsorption separation circulating bed layer pipelines, a pumping circulating pipeline, variable frequency circulating pumps and a pressure controller, wherein the bottom end of the liquid phase adsorption separation circulating tower is connected with one end of the variable frequency circulating pump through a pipeline, the other end of the variable frequency circulating pump is connected with the top end of the liquid phase adsorption separation circulating tower through the pumping circulating pipeline, a pumping circulating pipeline damper is arranged on the pumping circulating pipeline, the liquid phase adsorption separation circulating tower bed layer pipeline is arranged between each bed layer of the liquid phase adsorption separation circulating tower and the pumping circulating pipeline, and a viscous damper is arranged on the liquid phase adsorption separation circulating tower bed layer pipeline. The system can reduce the energy consumption of liquid phase adsorption separation system equipment, reduce pipeline vibration, eliminate pipeline stress, reduce the pressure difference between the front portion and the rearportion of a regulating valve, increase the flexibility of load regulation and the like.

The invention discloses a pump-free Rankine cycle and liquid metal combined power generation system which comprises an adsorption-Rankine cycle power generation cycle module and a liquid metal magnetofluid power generation cycle module. The adsorption-Rankine cycle power generation cycle module comprises a generator, an expansion machine, an adsorption bed a, an adsorption bed b and an aeration pipe; and the liquid metal magnetofluid power generation cycle module is composed of an annular channel structure and liquid metal. The adsorption beds alternately work to replace a working medium circulating pump, the input power of the working medium circulating pump can maximally account for 45% of the output power of the expansion machine, the working medium circulating pump is eliminated, the energy consumption of the system is reduced, and the net output power of the system is improved. The outlet pressure of the expansion machine in the adsorption-Rankine cycle is reduced through the adsorption process of the adsorption beds, and the net output power of the system is further improved. The temperature of the liquid metal in the annular channel structure is more uniform, and the flow ofthe liquid metal is facilitated.