49results about How to "Reduce tank pressure" patented technology

A warning device configured for removable mounting in combination with a high pressure gas cylinder and a regulator used to regulate the high pressure gas supplied by the cylinder. The device compression mounts between the regulator and tank outlet on conventional portable oxygen and gas supply systems using a specially configured manifold. The device features one or a combination of alarms, from a group including audio, visual, electronic, and remotely transmitted alarms. These alarms are activated by a pressure switch monitoring the remaining supply in the gas cylinder through a conduit the manifold. The alarm signal from the device alerts the user, or a third party monitoring the user, of current tank pressure or will sound an alarm when remaining high pressure gas inside the gas cylinder drops below a predetermined level.

The invention provides an electrode for electrolysis, a preparation method of the electrode and an electrolytic bath. The electrode for electrolysis comprises a conductive base material and an active coating, wherein the conductive base material is a base material containing titanium or titanium alloy; the active coating at least comprises a bottom coating layer and a surface coating layer; the bottom coating layer is prepared from titanic oxide, iridium oxide and ruthenium oxide; the surface coating layer is prepared from iridium oxide, ruthenium oxide, titanium oxide and a metal or an oxide of one of two of palladium and platinum. According to the electrode for electrolysis disclosed by the invention, the double coating layers are adopted; compared with the single coating layer only containing ruthenium, iridium and titanium, the electrode is better in activity, the chlorine evolution potential of the electrode is low, the oxygen evolution potential is high, the service life of the electrode is longer, and the electrolysis stability is better.

The invention discloses a titanium mesh anode for an electrodeposited nickel, which consists of a titanium coated copper conducting bar, a titanium plate support welded below the titanium coated copper conducting bar, and two titanium meshes welded onto the two sides of the titanium plate support, wherein the surfaces of both the titanium meshes are covered with metallic oxide coatings; the metallic oxide coating consists of platinum group metallic oxide and valve metallic oxide; the molar ratio of the platinum group metal and the valve metal is 1 to 2:1 to 3; 10 to 50g platinum group metal is contained in the titanium mesh per square meter; the platinum group metallic oxide is iridium oxide and/or ruthenium dioxide; and the valve metallic oxide is or several of titanium dioxide, tantalum pentoxide and zirconium dioxide. The invention also provides a preparing method for the titanium mesh anode. Compared with the conventional lead-base alloy anode, the titanium mesh anode has light weight, low oxygen evolution potential and long service life, can prevent the titanium meshes from being dissolved, and can improve the quality of the cathode products.

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.

The positive pole lead paste formula consists of lead powder 60-80 wt%, PbO2 5-20 wt%, dry short fiber 0.1-0.15 wt%, water 10-15 wt% and sulfuric acid 4-10 wt%. The addition of PbO2 to form skeleton of positive electrode before reduction can reduce through voltage, raise the current forming efficiency, shorten forming time and save cost. Using recovered PbO2 as additive can protect environment, and the addition of dry short fiber can increase the binding force between the active matters to ensure the enough strength of the positive pole.

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 method and apparatus for supplying liquefied natural gas to a storage tank or a fuel tank at specified temperatures and pressures. The method employs the steps of pressurizing a conditioning vessel with gaseous natural gas at a first pressure, feeding liquefied natural gas at a second pressure greater than the first pressure to a condenser in heat transfer relationship with the conditioning vessel, and withdrawing the liquefied natural gas from the condenser.

The invention provides a novel electrolytic cell structure, and particularly relates to an electrolytic cell for low-energy extraction of rare-earth metals. The electrolytic cell comprises a cell body, a cathode, a movable anode, an insulating layer, a thermal-insulation sealing furnace lid and an anodic conducting rod, wherein the cathode and the movable anode are vertically and parallelly placed in the cell body; the insulating layer and the thermal-insulation sealing furnace lid are located at the upper part of the cell body; the anodic conducting rod penetrates through the side wall of the insulating layer; one end of the anodic conducting rod is detachably and fixedly connected with the movable anode; the other end of the anodic conducting rod is connected with a sliding mechanism outside the cell body; the horizontal movement of the anodic conducting rod can be realized by controlling the configuration of the sliding mechanism so as to control the anode to move to be close to or be away from the cathode in the horizontal direction. Trough the movement of the anode, the novel electrolytic cell structure solves the problem that the heat loss and the energy consumption are increased in the electrolytic process because the polar distance is increased.

The invention relates to an anode of a lead acid storage battery, in particular to a lead plaster for an anode of a lead acid battery and a preparation method thereof. The lead plaster comprises the following components by weight: 100 portions of lead powder, 7 to 13 portions of 1.35g/cm<3> sulfuric acid, 8 to 12 portions of deionized water, 3 to 7 portions of red leads, 6 to 10 portions of six percent of PTFE emulsion and 2 portions of bismuth oxide 0.08-0 anode. Due to the addition of the red leads, the invention ensures that the pressure of a groove is lower when an unformed plate is formed, reduces the forming power consumption, and improves the contents of the lead dioxide of the plate. Due to the addition of PTFE, bismuth oxide and other components, the capacity and the service life of the battery are ensured to be improved.

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.

The invention relates to a method for electrolyzing metal lead and manganese dioxide in chlorine salt medium. It comprises following steps: preparing PbCl2: conversing concentrate lead sulfide to lead dichloride through ferric chloride at low temperature, separating lead dichloride from other components through flotation; preparing MnCl2: enriching manganese ore, immersing in hydrochloric acid to get MnCl2 solution; it is characterized in that it aslo comprises electrolyzing mixed solution of PbCl2 and MnCl2, the metal lead is decoded on stainless steel cathode, MnO2 is decoded on ruthenium dioxide coating anode. The invention is characterized by low requirement for device and process, high anode and cathode current efficiency, stable electrolyser voltage, reusable hydrochloric acid and sodium chloride generated during electrolysis, reduced production cost and wastewater discharge.

The invention belongs to the technical field of electrochemistry and relates to a quasi-zero-polar-distance electrolytic tank for water treatment. The quasi-zero-polar-distance electrolytic tank consists of more than one electrolytic tank unit, and each electrolytic tank unit mainly comprises an electrolytic tank body and more than two electrode components inserted in the tank body; and each electrode component consists of a porous cathode, a diaphragm frame, a diaphragm and a porous anode, the size of the inner frame of the diaphragm frame is the same as that of the diaphragm, and the diaphragm is an electric insulating and water-permeable porous fibrous membrane. The electrolytic tank provided by the invention can ensure that the polar distance can be less than 1mm because the electrode polar distance can be reduced to the thickness of the porous membrane, and meanwhile, after the porous membrane absorbs water, the resistance is very low, so that the tank pressure is greatly reduced, and the energy consumption is dramatically reduced. The electrolytic tank can greatly reduce the equipment investment and the floor area of devices under the condition with the same treatment amount.

A low bath voltage zinc electrolysis method relates to the field of zinc hydrometallurgy and solves the problem of large energy consumption of zinc electrolysis to adapt to industrial low energy and emission reduction production development demands. A certain concentration of C1-C4 organic linear acid or organic liner alcohol is added to an electrolyte, and the oxidation reaction potential of the C1-C4 organic linear acid or organic liner alcohol is lower than an anodic oxygen evolution potential, so the anodic reaction is characterized in that an organic matter oxidation reaction is preferentially carried out, and the electrode reaction process is fundamentally changed, thereby the bath voltage of a reaction system is reduced, and the problem of large energy consumption in the electrolysis process is effectively alleviated.

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 provides a method for simultaneously recycling a positive electrode and a negative electrode of a lithium ion battery by adopting a multi-layer electrode structure. The method comprises the following steps: clamping a positive electrode material of the lithium ion battery with a conductive acid-resistant material to serve as the negative electrode of an electrode system; using the conductive acid-resistant material for clamping a negative electrode material of the lithium ion battery to serve as a positive electrode of the electrode system; adding a sulfuric acid solution into the electrode system; and carrying out solid-liquid separation after the reaction. According to the method, a series of pretreatment operations such as crushing, ultrasonic oscillation, roasting, screening, sorting, magnetic separation, primary grinding, positive electrode material sorting and secondary grinding on the positive electrode and the negative electrode of the lithium ion battery are not needed. Compared with a traditional method for recycling the positive electrode of the retired lithium ion battery through electrochemical reduction, the method is higher in economical efficiency, lower in cell pressure and better in effect, and the positive electrode material and the negative electrode material can be recycled at the same time.

The invention relates to a titanium-based anode and a preparation method and application thereof. The titanium-based anode comprises a titanium substrate and an oxide coating arranged on the surface of the titanium substrate, the oxide coating is a metal ion doped iridium tantalum oxide coating; the metal ions comprise at least one of zirconium ions and antimony ions; and in the iridium tantalum oxide coating, the ratio of the sum of iridium and tantalum to the metal ions is (13-120): 1 according to mole parts. According to the titanium-based anode, through the special oxide coating design, the service life of the titanium-based anode can be remarkably prolonged, the oxygen evolution potential of the titanium-based anode is reduced, and the loadable current intensity and the acid resistance of the titanium-based anode are improved. The invention further provides a preparation method and application of the titanium-based anode.

The invention belongs to the technical field of metallurgy, and relates to an electrolytic manganese anode plate grid and a manufacturing method thereof. The electrolytic manganese anode grid comprises raw materials with the following mass fractions: 1.5% to 3.0% of tin, 0.3% to 1% of stibium, 0.05% to 1.5% of lanthanum, 0.05% to 1.5% of cerium, 0.05% to 2% of sodium, 0.05% to 2% of boron and thebalance of lead. According to the electrolytic manganese anode plate grid provided by the invention, by adding boron and sodium as well as lanthanum and cerium and by the cooperation with a smelting and casting process, the obtained anode plate grid is longer in service life, lower in resistance and lower in power consumption and can bring good economic benefits for an enterprise.

The invention relates to a preparation method of a Ti-Mn porous anode material for electrolysis of manganese dioxide. The preparation method comprises the following steps of: (1) fully mixing Ti powder and electrolytic Mn powder, and granulating the mixed powder; (2) carrying out die pressing forming on the granulated Ti/Mn mixed powder under a certain pressure; and (3) sintering the Ti/Mn preformed blank formed by pressing in a vacuum sintering furnace to finish the reaction synthesis and partial diffusion pore-forming process of the element mixed powder, thereby obtaining the intermetallic compound Ti-Mn porous material which is used for an anode for wet electrolysis of manganese dioxide. The preparation method is simple in technological process, technological parameters are easy to control, the obtained metal porous material has a good anode electro-catalysis effect, an excellent anode passivation resisting effect, excellent mechanical performance and a stable porous structure, andthe production period of electrolytic manganese dioxide is greatly prolonged.