50results about How to "Reduce tank pressure" patented technology

A heat management system for a high pressure gas tank comprising a loop circulation path for the gas including a path through an internal heat exchanger in the tank and a path through a heat exchanger external to the tank, wherein, in the instance of refueling, the refueling gas circulates multiple times in the loop through the internal heat exchanger and the external heat exchanger and in the course of circulation, a portion of the gas from the refuel line is introduced into the tank. In a reverse circulation during driving, the tank is warmed by heat exchange from the external heat exchanger to the internal heat exchanger.

Apparatus for the thermal management of high pressure gas storage tanks wherein the compression heat of refueling the tank is evacuated from the interior of the tank in which a gas circulates within the tank powered by a pump powered and as the gas traverses from the high pressure refuel depot to the storage tank, the circulating gas absorbs the refueling heat and carries the heat to a cooling system having a supplemental heat exchange device before the gas is introduced into the tank. The apparatus may be operated in reverse to transfer heat from a source to the tank interior to provide more complete exhaustion of the tank during vehicle operation.

Methods and systems are provided for depressurizing a fuel tank prior to refueling the fuel tank. One example method includes adjusting a latchable refueling valve to a latched open position to enable vapor flow from the fuel tank to a vapor canister at a first rate, and responsive to fuel tank pressure being higher than a first pressure threshold after a pre-determined duration at the latched open position, modifying the latchable refueling valve to an unlatched open position. The unlatched open position of the latchable refueling valve enables a second flow rate for fuel vapors, the second flow rate higher than the first flow rate at the latched open position.

A flamer may be used to sterilize poultry litter, soil, concrete, etc. The stationary or mobile flamer disclosed comprises a hood to contain the heat, an external frame, and burners. A fuel tank may be carried on the flamer or on a tractor. An additional embodiment provides for mounting the flamer on wheels, permitting the unit to be towed by a truck, four-wheeler, tractor, etc. The burners are adjustable as to angle, and fueling rate. A pressure in the fuel system is controlled by selectively switching between the liquid and vaporous components of the fuel. By limiting how low the pressure may fall, the flow of fuel from the tank to the torches is more consistent.

The invention relates to an ion exchange membrane with high current efficiency, and a preparation method thereof, and application of the ion exchange membrane to preparation of caustic soda in a chlor-alkali tank, and belongs to a compound membrane for producing alkali metal hydroxides and chlorine simultaneously in an ion membrane electrolytic tank. The ion exchange membrane with high current efficiency is characterized by being formed by compounding three layers of perfluorinated ion exchange resin base membranes and a reinforcing material; the three layers of perfluorinated ion exchange resin base membranes are sequentially a high-exchange-capacity sulfonic acid layer, a low-exchange-capacity sulfonic acid layer and a high-exchange-capacity carboxylic acid layer; and the reinforcing material is compounded on one side near the high-exchange-capacity sulfonic acid layer. The invention provides the ion exchange membrane which is high in current efficiency, mechanical strength and chemical stability, suitable for high and low alkali liquor concentration, and low in cost; the preparation method is simple; and in an electrolytic process, the electrolytic tank always keeps high current efficiency and low tank pressure; and products hydroxides have few impurities and are high in purity.

The invention discloses a method for ultrasonic-assisted indirect electrosynthesis of quinone compounds. The method comprises the following steps: (1) preparing an electrolyte, the electrolyte being Ce 3+ The mixed acid aqueous solution, described mixed acid is made up of methanesulfonic acid and sulfuric acid, wherein Ce 3+ The ion concentration is 0.8~1mol / L, the concentration of methanesulfonic acid is 2 mol / L, and the concentration of sulfuric acid is 0.2~0.6mol / L; (2) The electrolyte prepared in step (1) is respectively passed into the anode of the plate and frame electrolytic cell Chamber and cathode chamber are circulated, electrified for electrolysis to obtain anolyte and catholyte; the catholyte enters the anode liquid storage tank; (3) Use naphthalene, 2-methylnaphthalene or anthracene as the reaction substrate to prepare the raw material solution (4) Mix the anolyte obtained in step (2) with the raw material liquid obtained in step (3), and carry out a catalytic oxidation reaction under the conditions of ultrasonic assistance and mechanical stirring, and obtain a reaction mixture after sufficient reaction, and the reaction mixture is passed through After treatment, the corresponding quinones can be obtained.