161results about How to "Reduced purge time" patented technology

A fuel vapor handling apparatus supplies a purging air to a canister by using a purge pump and purges fuel desorbed from the canister into an intake pipe. A controller intermittently operates the purge so that the canister internal temperature recovers from a reduced level caused by the latent heat of vaporization of fuel during an operating period of the purge pump. Therefore, desorption of fuel from the canister during an operating period is facilitated. Since the actual operating time of the purge pump is reduced, the life of a motor that is a power unit of the purge pump becomes longer.

Systems and methods for insitu post atomic layer deposition (ALD) destruction of active species are provided. ALD processes deposit multiple atomic layers on a substrate. Pre-cursor gases typically enter a reactor and react with the substrate resulting in a monolayer of atoms. After the remaining gas is purged from the reactor, a second pre-cursor gas enters the reactor and the process is repeated. The active species of some pre-cursor gases do not readily purge from the reactor, thus increasing purge time and decreasing throughput. A high-temperature surface placed in the reactor downstream from the substrate substantially destroys the active species insitu. Substantially destroying the active species allows the reactor to be readily purged, increasing throughput.

A fuel cell system includes a primary fuel line to the fuel cell assembly, a jet pump in the primary fuel line and adapted to be driven by the flow of primary fuel, the jet pump having a nozzle, an entrainment chamber downstream of the nozzle and a mixing tube downstream of the entrainment chamber, a fuel exhaust recycle line from the fuel cell assembly opening to the entrainment chamber for supply of fuel exhaust thereto, and a mass flow control device in the primary fuel line upstream of the jet pump for controlling the primary fuel flow rate to the jet pump. The nozzle of the jet pump has an adjustable cross-sectional area to provide a variable area flow of the primary fuel so that the ratio of fuel exhaust entrained by the primary fuel in the entrainment chamber can be varied.

A system and a method are described for monitoring pressure imbalances in the adsorbent beds of a portable gas concentrator. Using the programmability features found in modern portable concentrators, various mitigative procedures to adjust for pressure imbalances and to predict the need for service are disclosed.

An exposure apparatus which projects a pattern formed on a mask onto a substrate by using exposure light. The apparatus includes a shielding member which surrounds a light path space through which exposure light passes and has a passage which makes the light path space communicate with an ambient space, and a gas supply system which supplies inert gas to the light path space surrounded by the shielding member. A direction of the passage coincides with a flow direction of an ambient atmosphere which flows through the ambient space, and the passage includes a first passage and a second passage. The first passage is located at a position upstream, with respect to the flow direction, relative to the second passage, and the first passage is smaller in section than the second passage.

The invention provides a blowing system and blowing method for a fuel cell. The blowing system comprises a sensor group, an air pump and a system controller, wherein the sensor group comprises a cell stack temperature sensor and an environmental temperature sensor, the cell stack temperature sensor is arranged in a fuel cell stack, and the environmental temperature sensor is arranged outside the fuel cell stack; the air pump is connected to an air inlet pipeline of the fuel cell stack; and the system controller is used for receiving a measuring signal transmitted from the sensor group and controlling the on / off of the air pump according to the measuring signal. By the above blowing system, water in the cell stack can be effectively carried out, and the internal temperature of the fuel cell stack is reduced; the internal temperature of the fuel cell stack and the environmental temperature of the system are measured to judge whether the fuel cell stack is effectively blown or not; and the blowing of the fuel cell stack is stopped according to a judgment result, the blowing time of the fuel cell stack is effectively reduced, the energy consumption of the blowing system is reduced, and the reliability and the stability of the blowing system are improved.

The invention discloses an air purification device and method capable of continuously degrading indoor VOCs. The air purification device comprises a dehumidification unit, an inlet air inducing unit, a first purification and degradation chamber, a second purification and degradation chamber, an outlet VOCs monitor and control unit and an exhaust unit. According to the air purification device capable of continuously degrading the indoor VOCs, VOCs gas adsorption degradation and activated carbon desorption regeneration are integrated, and integrated shell mounting is easy; the air purification device has the beneficial effect of being convenient to move, an adsorbing material does not need to be replaced frequently, the consumption cost of an activated carbon adsorbing material is greatly reduced, and the service life of the activated carbon adsorbing material is prolonged; and a dehumidification pretreatment method is adopted, the efficiency that activated carbon purifies and adsorbs the VOCs later is greatly improved, the air purification effect is greatly improved, and the good market potential is achieved.

A thin-film deposition apparatus includes a reaction chamber, a substrate transfer chamber, a susceptor having a radially-extending step portion, a ring-shaped separation wall for separating the reaction chamber and the substrate transfer chamber at a processing position where the susceptor is positioned inside the ring-shaped separation wall, and a conductive sealing member which is interposed between the radially-extending step portion and the separation wall to seal the reaction chamber from the substrate transfer chamber when the susceptor is at a processing position.

A method of purging a semiconductor manufacturing apparatus comprises a step of etching a CVD-deposited film deposited in a chamber (2) constituting a semiconductor manufacturing apparatus which has performed a process of forming a CVD film using a CVD process over a semiconductor wafer (12) by using an etching gas containing at least a halogen gas, and a step of purging a cleaning gas remaining in the chamber (2) by causing a gas containing hydrogen to flow into the chamber (2) after the step of etching the CVD-deposited film by using the cleaning gas.

A device for increasing the recovery rate of aromatic hydrocarbons of oxidized tail gas of hydrogen peroxide comprises a primary condenser, an intermediate separation tank, a secondary condenser, a cyclone separator and an oil-water separator, wherein the primary condenser is connected with the intermediate separation tank through a pipeline; a gas phase outlet at the top of the intermediate separation tank is connected with the top of the secondary condenser through a pipeline; a liquid phase outlet at the bottom of the intermediate separation tank is connected with the oil-water separator through a pipeline; an outlet of the secondary condenser is connected with an inlet of the cyclone separator; a liquid phase outlet at the bottom of the cyclone separator is connected to the oil-water separator through a pipeline. With the adoption of the device for increasing the recovery rate of the aromatic hydrocarbons of the oxidized tail gas of hydrogen peroxide, entrainment of the tail gas can be effectively reduced, the water content of the tail gas can be reduced, the recovery effect of the aromatic hydrocarbons can be enhanced, and the recovery rate can be increased.

The invention relates to a method for purifying and enriching a low concentration water solution with vanadium content. The technical proposal is as follows: a purifying agent with the concentration ranging from 0.6 to 10g / L is added into the low concentration water solution containing vanadium with the concentration of V2O5 of ranging from 2000 to 5000mg / L, the mixture is mixed evenly with a pH value ranging from 6 to 8; the low concentration water solution containing vanadium performs the ion exchange adsorption through the strongly basic anion ion exchange resin at a speed of 2.0 to 10mLh<-1>mL<-1> wet resin to the adsorption and saturation of the strongly basic anion ion exchange resin to obtain the resin containing vanadium and the adsorption under liquid; and then the mixing solution of 3 to 5wt percent of sodium hydroxide and 8 to 13wt percent of sodium chloride is prepared to be as a strippant, the use level of the strippant is three to five times of the volume of the resin containing vanadium, the strippant performs the desorption through the resin containing vanadium at a speed of 0.8 to 1.6 mLh<-1>mL<-1> wet resin to obtain the vanadium enriching fluid; finally, the purifying agent with the concentration ranging from 0.1 to 2.5g / L is added into the vanadium enriching fluid, the purified fluid is obtained after the solid-fluid separation. The method has the characteristics that the purifying time is shortened, the purifying agent consumption is reduced, the vanadium loss is reduced, the purifying effect is good and the technique is simple.

The invention discloses a pretreatment method for simultaneously purifying persistent organic pollutants of multiple classes in an environmental medium. The method comprises the following steps: filling silica gel, alkaline silica gel, silica gel, acidic silica gel, silica gel, copper powder and anhydrous sodium sulfate into a sand core-containing purification column with an inner diameter ranging from 10mm to 12mm from bottom to top in order to obtain a self-prepared compound silica gel column; purifying and eluting an environmental medium sample containing the POPs (Persistent Organic Pollutants) of three classes, including organo-chlorine pesticides, polychlorinated biphenyls and dioxins by using the self-prepared compound silica gel column for the first time to obtain the concentrated liquor of primary purification and elution; selecting a packed column having the inner diameter ranging from 8mm to 12mm, and filling glass wool, anhydrous sodium sulfate, activated carbon dispersed silica gel, anhydrous sodium sulfate and glass wool into the packed column from bottom to top in order to obtain a self-prepared activated carbon dispersed silica gel column; and carrying out purification and elution on the concentrated liquor of primary purification and elution obtained in the step 2 by using the self-prepared activated carbon dispersed silica gel column obtained in the step 3, and orderly separating to obtain an eluate containing the POPs of each class in the environmental medium sample containing the POPs of three classes.

The invention provides a chemical vapor deposition device and method. The chemical vapor deposition device comprises an outer cavity body, a motion tray, inner cavity bodies, gas exhausting cavity bodies, tray grooves, chip bearing zones, heating devices, gas supply pipelines, first gas exhausting pipelines and a second gas exhausting pipeline; the same or different reaction precursor gases or inert gases are injected into the multiple independent inner cavity bodies, and through sealing of capillary gaps between the inner cavity bodies and the upper surface of the tray, the pressure intensityof the inner cavity bodies is always higher than that of the outer cavity body; and each inner cavity body is independently subjected gas feeding and gas exhausting, and independently heated and cooled; by controlling the motion tray to continuously rotate or rotate in an indexing mode, reaction precursors sprayed by nozzles in the different inner cavity bodies can be sprayed onto chips arrangedon the chip bearing zones on the upper surface of the motion tray by turns, and continuous chemical vapor deposition or periodic atomic layer deposition of a film is achieved. According to the chemical vapor deposition device and method, the different reaction precursors can be isolated, quick temperature raising, temperature lowering and gas switching are achieved, and the semiconductor film growing yield and productive rate are advantageously increased.

The invention relates to a biological floating island, and discloses a terrestrial plants and microorganisms combined biological floating island. The biological floating island comprises a biological floating island unit (1), wherein the biological floating island unit (1) comprises a vegetation layer (2), a matrix layer (3), a buoyancy basal disc (4) and a heavy hammer (5), the matrix layer (3) is accommodated in the buoyancy basal disc (4), the vegetation layer (2) covers the surface of the matrix layer (3), root systems are inserted in the matrix layer (3), the buoyancy basal disc (4) bearing the matrix layer (3) and the vegetation layer (2) floats on the surface of water, the heavy hammer (5) is sunk in the water, the heavy hammer (5) is flexibly connected with the bottom of the buoyancy basal disc (4), and microorganism filler particles (6) are embedded in the surface of the heavy hammer (5). The biological floating island disclosed by the invention is simple in structure and low in cost, and treats polluted water by using the synergistic effect of microorganisms and terrestrial plants, and indexes such as water purification efficiency, purification time and set-up area of the biological floating island are all superior to those of traditional biological floating islands.

The invention relates to the field of sewage treatment and in particular relates to a sewage purification system. The sewage purification system comprises a first dosing device, a second dosing device, a third dosing device, a coagulation tank, a flocculation tank, a filter device and a liquid storage tank, wherein the first and second dosing devices are communicated with the coagulation tank via pipelines; the third dosing device is communicated with the flocculation tank via a pipeline; the coagulation tank is communicated with the flocculation tank via a pipeline; the filter device comprises a motor, a rotating shaft, adsorption discs, positioning discs, scrapers, sewage tanks, sub-sewage tanks and clear water tanks sleeved outside the sewage tanks; the rotating shaft is arranged on the sewage tanks; a plurality of adsorption discs are arranged on the rotating shaft; each adsorption disc is matched with a scraper; the sub-sewage tanks are fixedly arranged in the sewage tanks; the clear water tanks are communicated with the liquid storage tank via pipelines; the flocculation tank is communicated with the sewage tanks. The system has the beneficial effects that the system can effectively purify sewage and is short in cycle; the purified sewage reaches the discharge standard, can be reused according to the production requirements, and has a wide range of application.

The invention relates to a water-oxygen fractionating purification vacuum glove box which is characterized in that an air pump (21) is taken as a power source, air in a system is circularly purified by flowing through a water purifying chamber and an oxygen purifying chamber, the water purifying chamber is divided into a front stage and a rear stage, and the fractionating purification of water in the air is realized, thereby the aim for purifying water and oxygen with high efficiency is achieved. A separation net four group is formed by a stainless steel filter sieve (26), an external upper ring (27), an external lower ring (28), an internal upper ring (37) and an internal lower ring (38), and the purification chamber is divided into two water purifying chambers and one oxygen purifying chamber.

The invention discloses an energy-saving starting method for an oxygen producing machine, wherein the method comprises the following steps: a, sweeping of a space division system; b, accumulation of liquid air of the space division system; and c, starting of an oxygen producing machine, wherein during the sweeping of a space division system in step a, the heating and the sweeping of the space division system are performed by adopting low pressure nitrogen in a pipe network; during the accumulation of liquid air of the space division system in step B, the expansion and the refrigeration of the space division system are performed by adopting the low pressure nitrogen in the pipe network; the starting of the oxygen producing machine in step c includes the starting of an air compression system, an air precooling system and a molecular sieve system; in step b, after a main condenser of a space division column reaches air liquefaction temperature, loxygen discharged by the main condenser is reversely charged into the main condenser before stoppage, so that the liquid level of the main condenser reaches a liquid level required at the step of adjusting purify; and in step b, the expanded nitrogen entering the space division system is repeatedly pumped, pressed and recycled. An air compressor does not start, and the sweeping of the space division system is performed by utilizing the nitrogen in the pipe network; the time and the energy consumption of the sweeping of the space division system are saved; the starting time of space division is greatly shortened; the power consumption is saved; and the commissioning time is shortened.

An automatic-and-manual operation composite valve includes a valve main body into which an air is supplied and from which the air is discharged, a piston provided within the valve main body to be vertically movable by means of the air supplied or discharged and a snapping force of a spring attached to the piston, a valve body provided within the valve main body, and opened and closed by the piston, an air switch valve portion provided within the valve main body for switching air supply and air discharge and a manual operation mechanism portion for operating the air switch valve portion.

The invention discloses a nuclear power plant auxiliary steam and steam turbine shaft seal steam pipeline joint purging method, and belongs to the technical field of nuclear power plant pipeline steampurging. The nuclear power plant auxiliary steam and steam turbine shaft seal steam pipeline joint purging method comprises the following steps that firstly, an adjusting valve in a pipeline, a filter element of a filter net and a filter element of a check valve are moved out; secondly, only a pipeline valve on a to-be-purged path is opened; thirdly, an auxiliary boiler is started, a steam isolation valve is gradually opened so as to conduct purging into the pipeline till the black or the brown of the steam at the pipeline outlet position disappears, and the steam isolation valve is closed; fourthly, installation or replacement of a target plate is conducted at the pipeline outlet position, the steam isolation valve is gradually opened, purging is conducted into the pipeline for a periodof time, the steam isolation valve is closed, the target plate index is detected, and whether the requirement is met or not is judged; and fifthly, the fourth step is repeatedly conducted till it is detected that two continuous purging results meet the requirement. By means of the nuclear power plant auxiliary steam and steam turbine shaft seal steam pipeline joint purging method, the nuclear power plant auxiliary steam and steam turbine shaft seal steam supply pipeline purging quality can be effectively improved, the purging time is shortened, and the purging cost is reduced.

The invention discloses a gas distributor applied to a film deposition technique. Radial gas distribution main pipes are arranged in a body, gas distribution branch pipes are arranged on both sides of the gas distribution main pipes in a staggered mode, the cross sectional areas of pipelines are gradually reduced from the gas distribution main pipes to the gas distribution branch pipes, so that a tree-shaped gas distribution network is formed, reactant gas or vapor from a gas inlet pipe of a gas distribution network center can be vertically and uniformly blown to the surface of a covered silicon wafer through a plurality of gas outlet pipes which are regularly distributed, the homogeneous reaction on the covered silicon can be realized, the reaction efficiency can be improved, the consumption of the reactant gas and the size of equipment can be reduced, residual gas at the edge of the gas distribution network can be easily blown out by blowing gas, and the CVD (Chemical Vapor Deposition) reaction in the ALD (Atomic Layer Deposition) reaction is effectively prevented. The gas distributor has the obvious characteristics that the yield and qualified rate of the ALD reaction are increased, and the cost is reduced.

The invention particularly discloses a moon roof type air purifier device for a passenger car and a working method of the moon roof type air purifier device. The device comprises a flow guide air flue base, a ventilation opening, a flow guide plate, air walls, fixing plates, filtering net inserting grooves, L-shaped filtering net fixing grooves, fixed supporting bases, a cover plate, a partition board, fixing pieces, plasma assemblies, ultraviolet lamps and fans. The device has the following advantages that the size of a purification bin is increased, and the moon roof type air purifier device is short in purifying time when being used for purifying a passenger car with the same carriage area; one-time assembly of the plasma assemblies, the fans, the ultraviolet lamps and filtering nets can be achieved, and production efficiency is improved by 300%; the purification bin is reasonable in design, the utilization rate of materials is improved, and cost and investment are reduced; by means of the fans which are independently arranged in different spaces, the situation that air power is reduced due to parallel connection of the fans during normal work of the device does not exist; according to test detection, processing efficiency of the device for formaldehyde, toluene, dimethylbenzene and TVOC reaches 95% per hour, the processing efficiency for PM2.5 reaches 98% per hour.

The invention discloses a water ecological restoration system; an upper frame and lower frame of the system are connected through connection rods arranged on two sides; floats are mounted on the upper frame, and flexible solar panels are arranged on the floats; the upper frame is provided with plastic planting areas, the bottom of each planting cell of the plastic planting areas is provided with a plurality of seepage holes; a light passage is formed between every two adjacent plastic planting areas along the length of the upper frame; a plurality of propellers are arranged at one end of the upper frame in its width direction on a support, and stirring devices are mounted on the supports in the middle of the upper frame; all the stirring devices, the propellers and the flexible solar panels are connected to a battery pack on a mounting platform on the upper frame; a floating matter remover is arranged on the upper frame; a plastic planting plate is arranged on the lower frame, and Hydrilla verticillata, Elodea nuttallii, Potamogeton pectinatus and / or Dendrobium lohohense are planted in planting holes of the plastic mounting plate; a plastic retaining plate is mounted in every two adjacent retaining grooves.

The invention discloses an industrial wastewater purifier, which comprises a precipitation tank body, an electrolysis tank body, a heating device, a membrane bioreaction tank body and a water storage tank body, wherein a sterilizing device is arranged in the water storage tank body; the membrane bioreaction tank body is connected with the water storage tank body through a water through pipeline; a water pump and a water through pipe valve are arranged on the water through pipeline; a water outlet pipeline is connected with the bottom part of the water storage tank body; a water pump, a flowmeter and a water through pipe valve are arranged on the water outlet pipeline. The industrial wastewater purifier is provided with the precipitation tank body, the electrolysis tank body, the membrane bioreaction tank body and the sterilizing device, so that a purification process is strictly controlled; a catalytic purification process is realized through a centrifugal machine, a coagulant aid and the heating device, so that the purification time is greatly shortened, the purification efficiency is improved, the production cost of enterprises is reduced, sediments and harmful gas produced during the purification process can be reasonably treated, secondary pollution is prevented, and the industrial wastewater purifier is convenient to use.

The invention provides a fuel cell system, belongs to the technical field of fuel cells, and solves the problems that a humidifier and an electric pile cannot be effectively purged and mechanical damage of a membrane cannot be caused in the prior art. The system comprises an electric pile, an air compressor, a water pump, a heater, a radiator, a humidifier, a three-way valve I and a controller, wherein the air inlet of the electric pile is connected with the air compressor through the humidifier, a cooling liquid inlet is connected with the output end of the three-way valve I, a cooling liquid outlet is connected with the inlet of the water pump, and the outlet of the water pump is connected with the first input end of the three-way valve I through the heater and connected with the second input end of first three-way valve I through the radiator. According to the invention, after a shutdown instruction is received, a controller controls a cooling liquid to be heated through small circulation until the water temperature of a cooling liquid inlet of an electric pile rises to a threshold value, and a heater is turned off; an air compressor is controlled to perform hot purging on the electric pile and a humidifier; and after purging is finished, the cooling liquid is controlled to carry out large circulation for heat dissipation until the water temperature of the cooling liquid inlet is reduced to a set value, and the fuel cell system is closed.

The invention discloses a pneumatic hydrodynamic linkage spray dust reduction device for blasting a working face. The device comprises a water pipe connected with a purified water curtain device, a water pipe is transversely fixedly connected to a bracket, a vertically arranged connecting rod is hingedly connected with the lower portion of the free end of the bracket by a rotating shaft, the connecting rod is provided with a hook, and an iron plate is arranged at the lower end of the connecting rod; a quick valve is installed on the water pipe below the bracket, a valve stem of the quick valveand a transversely arranged rotating rod are linked, the rotating rod passes through the hook and is positioned by the hook, and a heavy hammer is hanged on the free end of the rotating rod; the lower end of the water pipe is connected with an air inlet pipe and a water inlet pipe through a Y-shaped triplet, and regulating valves are respectively arranged at the ends of the air inlet pipe and thewater inlet pipe. The device can greatly improve the on-site working environment, ensure the health of personnel, and have simple device manufacturing, easy material obtaining and good economic benefits.

An automatic-and-manual operation composite valve includes a valve main body into which an air is supplied and from which the air is discharged, a piston provided within the valve main body to be vertically movable by means of the air supplied or discharged and a snapping force of a spring attached to the piston, a valve body provided within the valve-main body, and opened and closed by the piston, an air switch valve portion provided within the valve main body for switching air supply and air discharge and a manual operation mechanism portion for operating the air switch valve portion.

The invention relates to a photocatalyst reactor. The photocatalyst reactor comprises a support pillar, an annular partition board and a shell which are coaxially arranged in sequence from inside to outside, and the space between the support pillar and the shell are divided into an inner ring space and an outer ring space by the annular partition board; a first flue gas inlet is formed in one end of the shell, and a first flue gas outlet is formed in the other end of the shell; the inner ring space and the outer ring space are each internally provided with multiple reaction layers in the flue gas circulation direction, each reaction layer is composed of multiple photocatalyst reaction units which are arranged in an annular pattern, and each photocatalyst reaction unit is arranged to be perpendicular to the flue gas circulation direction. In addition, a photocatalyst reaction tower and a flue gas purification system are further provided. By means of each of the photocatalyst reactor, the photocatalyst reaction tower and the flue gas purification system, the desulfuration and denitration can be achieved simultaneously, the photocatalysis efficiency and reaction homogenization degree are high, and a good desulfuration and denitration effect is achieved.