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534 results about "Surge tank" patented technology

Surge tank is a water storage device used as pressure neutralizer in hydropower water conveyance system to resists excess pressure rise and pressure drop conditions. A surge tank (or surge drum or surge pool) is a standpipe or storage reservoir at the downstream end of a closed aqueduct, feeder, dam, barrage pipe to absorb sudden rises of pressure, as well as to quickly provide extra water during a brief drop in pressure.

Ethanol production with dilute acid hydrolysis using partially dried lignocellulosics

In a process for converting lingnocellulosic biomass to ethanol, the improvement of obtaining higher fermentable soluble sugar yields by drying acid impregnated biomass particles, comprising: a) feeding moist lignocellulosic biomass into an acid impregnator to render it acid-soaked and draining the acid-soaked biomass to about 30% to 35% by weight solids; b) dewatering the acid-soaked biomass by drying or centrifugation to prevent compaction of the biomass and arrive at about 40% to 60% by weight solids; c) subjecting the acid-impregnated biomass to a first-stage hydrolysis reactor at a temperature of from 130° C. to 220° C. and discharging formed hydrolysate into a flash tank at about 120° C. to 140° C. to hydrolyze most of the remaining soluble oligosaccharides to monomeric sugars, and flashing remaining hydrolysate to a second flash tank at a lower temperature than the first flash tank-the second flash tank serving as a feed surge tank for a counter-current extractor; d) washing the hydrolysate, adjusting the pH of the sugar extract to about 5, and recovering more than 95% of the soluble sugars in the first-stage hydrolysate slurry by a counter-current extractor; e) subjecting remaining washed-first stage solids of pretreated biomass to a second-stage acid and metal salt impregnator and dewatering by drying or centrifugation to prevent compaction of biomass to arrive at 40% to 60% by weight solids; f) subjecting the acid and metal salt-impregnated biomass to a second-stage hydrolysis reactor at a temperature from 190° C. to 240° C. and discharging formed hydrolysate into a flash tank, at about 120° C. to 140° C. to hydrolyze most of the remaining soluble oligosaccharides to monomeric sugars and flashing remaining hydrolysate to a second flash tank at a lower temperature than the first flash tank, the second flash tank serving as a feed surge tank for second-stage fementors; g) cooling pH-adjusted extract from the counter-current extractor, feeding the extract to a first-stage fermentor and air sparging the first-stage fermentor at a rate sufficient to promote enough yeast growth to compensate for loss through second-stage fermentors; h) pH adjusting second-stage hydrolysate slurry to 4.5, cooling the slurry and adding it into the top of the first fermentor of a two-fermentor train in the second stage fermentors, pumping broth from the bottom of the first stage fermentors to the second stage fermentors while the yeast is in the growth phase for a period sufficient to consume over 95% of fermentable sugars; and i) recovering ethanol.
Owner:MIDWEST RES INST

Packer packing multi-layer hydropower abrasive perforating and fracturing integrated technique

InactiveCN101270639AGuaranteed Design DisplacementEffective transformationFluid removalAbrasive blastingSurge tank
An integrative method for a packer to pack off a multi-layer hydraulic sand-spraying perforation and pressure fracture is used in the multi-layer perforation and the pressure fracture of a well of well completion of a petroleum casing. A pipe column comprises an oil pipe, a safety joint, a hydraulic ejector, a K34 or a Y34 packer, a uniflow valve, a sieve vessel and an end cap, wherein, the lower layer of a hydraulic ejector position requires perforation depth. With the completion of perforation, the hydraulic sand-spraying fractures the lower layer by actively circulating the lower layer of the hydraulic sand-spraying perforation. When the hydraulic sand-spraying pressure fracture for the lower layer is completed, a reverse circulation surge tank is processed and the pipe column is leveled up and dragged to the upper layer of perforation pressure fracture to continue to fracture the upper layer by hydraulic sand-spraying perforation. After completion, the pipe column is lifted to be put into the well-completion pipe column to discharge liquid and finish production. The perforation is not required by each layer because only an oil pipe needs to be dragged to finish the multiple fracturing of multiple layers of the well. The integrative method integrating the perforation, the fracture and the packing-off together is new stimulation treatment technology. In addition, the fracture is reliable, construction is easy and convenient and period is short.
Owner:PETROCHINA CO LTD

Efficient hydrogen energy vehicle power system for purifying ambient air

The invention relates to an efficient hydrogen energy vehicle power system with an ambient air purifying function. The efficient hydrogen energy vehicle power system comprises a drive system, a gas turbine, a high pressure hydrogen storage tank, a hydrogen compression unit, a hydrogen gas surge tank, an inverter, an electric-power generator, an expander, a storage battery and an exhaust gas treating and discharging system. The high pressure hydrogen storage tank is connected to an inlet of the expander, one path of an outlet of the expander is connected to a hydrogen inlet through a cold capacity recovery device and the hydrogen gas surge tank, and the other path is connected to the inlet of the expander through a hydrogen compression unit and an intermediate tank. A power combiner is connected with the gas turbine and/or the electric-power generator, according to the technical scheme, the gas turbine is replaced with a hydrogen fuel engine, and the power combiner is connected with the drive system through a drive shaft. According to the efficient hydrogen energy vehicle power system with the ambient air purifying function, the gas turbine is combined with the electric-power generator, so that work efficiency of the hydrogen energy vehicle power system is improved. By recycling of exhaust gas heat, air pollution is reduced, and the natural environment can be protected easily.
Owner:SHIJIAZHUANG XINHUA IND FURNACE CO LTD

Water heating apparatus for continuous heated water flow and method for use in hydraulic fracturing

ActiveUS20100294494A1Great mixing actionFacilitate hot water flowTemperatue controlFluid removalSurge tankAcute angle
A method of hydraulic fracturing of an oil producing formation includes the provision of a heating apparatus which is transportable and that has a vessel for containing water. The method contemplates heating the water up to a temperature of about 200° F. (93.3° C.). A water stream of cool or cold water is transmitted from a source to a mixer, the cool water stream being at ambient temperature. The mixer has an inlet that receives cool or cold water from the source and an outlet that enables a discharge of a mix of cool or cold water and the hot water. After mixing in the mixer, the water assumes a temperature that is suitable for mixing with chemicals that are used in the fracturing process, such as a temperature of about 40°-120° F.+ (4.4-48.9° C.+). An outlet discharges a mix of the cool and hot water to surge tanks or to mixing tanks. In the mixing tanks, a proppant and an optional selected chemical or chemicals are added to the water which has been warmed. From the mixing tanks, the water with proppant and optional chemicals is injected into the well for part of the hydraulic fracturing operation. The mixer preferably employs lateral fittings that enable heated water to enter the mixer bore at an acute angle. The mixer can also provide a lateral fitting that exits the mixer bore upstream of the first lateral fitting, the second lateral fitting transmitting water via a conduit such as a hose to the heater.
Owner:HEAT ON THE FLY

Pipeline leakage detecting and positioning experimental system and detection method thereof

The invention relates to a experimental system for scientific research, in particular to a pipeline leakage detecting and positioning experimental system and a detection method thereof, and the system is used for realizing detection and positioning experiments on leakage of long-distance gas conveying pipelines and long-distance liquid conveying pipelines by virtue of different leakage detection methods. The pipeline leakage detecting and positioning experimental system comprises a conveying pipeline, a medium conveying device, a negative-pressure wave detection device and an acoustic emission detection device; the medium conveying device comprises a conveying pipeline, a medium container, a surge tank, a water pump, an oil pump, a water tank outlet flowmeter, a water tank inlet flowmeter, an oil tank outlet flowmeter, an oil tank inlet flowmeter, a nitrogen cylinder outlet valve, a water tank outlet valve and an oil tank outlet valve; a bent part of the conveying pipeline is of a U-shaped pipeline, and the rest part of the conveying pipeline is a straight pipeline section; the negative-pressure detection device comprises a pressure sensor, an electromagnetic flowmeter, a data acquisition card and a computer; the acoustic emission detection device comprises an acoustic emission sensor, a signal preamplifier, an acoustic emission detection instrument and a computer; the acoustic emission detection instrument is used for processing signals, and transmitting the signals to the computer of the acoustic emission detection instrument so as to analyze the signals.
Owner:NANJING TECH UNIV

Hybrid power system with waste heat recovery function and environment air purification function and for hydrogen vehicle

The invention relates to a hybrid power system with a waste heat recovery function and an environment air purification function and for a hydrogen vehicle. The hybrid power system with the waste heat recovery function and the environment air purification function and for the hydrogen vehicle comprises a vehicle body, a transmission system, a hydrogen fuel engine, a hybrid power transmission, a metal hydride storage tank, a turbine, a catalyst, a high-pressure surge tank, a hydrogen buffering tank and the like. The metal hydride storage tank is connected to an inlet of the turbine through the high-pressure surge tank. An outlet of the turbine is connected to an inlet of the hydrogen fuel engine through the hydrogen buffering tank or a high-pressure hydrogen buffering tank. An outlet of the hydrogen fuel engine is connected to a discharge outlet through the catalyst, a tail gas heat exchanger, a residual hydrogen absorption unit and a tail gas zero-stage purifier. The hydrogen fuel engine is connected with the hybrid power transmission through a power output shaft. According to the hybrid power system with the waste heat recovery function and the environment air purification function and for the hydrogen vehicle, the hydrogen fuel engine, the turbine and an exhaust gas waste heat recovery and purification system are combined to form the hybrid power system for the automobile, chemical energy of hydrogen is sufficiently used, various kinds of heat energy in the process is recovered, and the working efficiency of the power system is improved; and atmospheric pollution is avoided, the environment air is purified, and protection of the natural environment is facilitated.
Owner:SHIJIAZHUANG XINHUA IND FURNACE CO LTD
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