摘要:
A method for utilizing an aircraft to transport a container of beneficial gas to altitudes greater than five kilometers and releasing the beneficial gas into the stratosphere at that altitude. The released beneficial gas may comprise oxygen, neutralizing chemicals in gas form, other gases beneficial to the ozone layer, or the like. The aircraft transporting the container of beneficial gas may comprise an airplane, a balloon, or any other aircraft known in the art. Additionally, the beneficial gas may be released at altitudes greater than five kilometers, such as seven or ten kilometers. A threshold ozone concentration level may be determined such that beneficial gas is released from the containers only when the measured ozone concentration is below the threshold ozone concentration level. Further, the stratospheric density may be measured and the quantity of beneficial gas released into the stratosphere may be determined in proportion to the measured stratospheric density.
摘要:
A system for recycling spent sulfuric acid, wherein spent sulfuric acid is effectively utilized at a place other than a discharge source regardless of geographical conditions, and a method for recycling waste sulfuric acid. In the system, when spent sulfuric acid that is discharged or collected at a discharge source is transported by a carrier unit and used at a user office a concentration of the spent sulfuric acid is measured and/or adjusted at least at one of the discharge source, the carrier unit, and the user office. The spent sulfuric acid waste liquid that is discharged or collected at the discharge source is reutilized by being mixed with at least one of a hydrogen peroxide solution and water.
摘要:
A process is disclosed for providing a flow of particulate matter such as a catalyst to a reactor, comprising intermittently adding said particulate matter and a diluent to a mixing tank, and continuously withdrawing a slurry of particulate matter in diluent from the mixing tank for introduction into the reactor, wherein prior to each addition of particulate matter and diluent to the mixing tank, the concentration of particulate matter in the diluent already in the mixing tank is measured or calculated, and the amount of particulate matter and diluent subsequently added is measured so as to achieve the same concentration at the end of the addition as that measured or calculated prior to the addition. Preferably measurement of the amount of particulate matter and diluent added to the mixing tank is carried out before any diluent is added to the particulate matter.
摘要:
A method of controlling the amount of conductivity increasing substances, e.g., free available halogen, in particular free available chlorine, present in an aqueous medium is described. In accordance with the method of the present invention, an aqueous medium is provided and its conductivity determined. A source of at least one conductivity increasing substance is introduced controllably into the aqueous medium, and a second conductivity measurement is made. The determined conductivities are compared, and in response to this comparison, the amount of conductivity increasing substance added to the aqueous medium is adjusted. In a preferred embodiment of the present invention, the aqueous medium is an aqueous stream, and the source of conductivity increasing substance is calcium hypochlorite, which is introduced into the aqueous stream through the use of a feeder unit, i.e., a chlorination unit.
摘要:
An apparatus for diluting a solution comprises a preparation vessel for mixing a solution with a diluent to dilute the solution, a solution supply unit, a diluent supply unit, and a controller. The controller controls the solution supply unit and the diluent supply units to supply the solution and diluent into the preparation vessel in such quantity that the concentration of the diluted solution is higher than a desired concentration. The controller also calculates an additional quantity of the diluent necessary for diluting the solution in the preparation vessel to the desired concentration based on a difference between the concentration of the solution in the preparation vessel and the desired concentration, and controls the diluent supply unit to add the diluent into the preparation vessel in smaller quantity than the calculated additional quantity and repeats the calculation and addition until the solution concentration in the preparation vessel reaches the desired concentration.
摘要:
A plant with a gas turbine such as a combined cycle power plant of a gas turbine cycle and a steam turbine cycle is provided with a nitrogen oxide removal device for removing NO.sub.x by injecting ammonia to an exhaust gas of the gas turbine. The device reduces NO.sub.x concentration to a certain value or less before the exhaust gas is released to the air. An ammonia flow amount is rapidly controlled such that a mole ratio of ammonia to NO.sub.x coincides with a set mole ratio value. The mole ratio is calculated from a predicted NO.sub.x concentration at an inlet of the nitrogen oxide removal device predicted by calculating operation conditions of the gas turbine, an ammonia flow amount value, and an exhaust gas flow amount. The set mole ratio value is calculated from a deviation of a measured NO.sub.x concentration value at an outlet of the nitrogen oxide removal device and a set NO.sub.x concentration value, and an amount of water injected to a combustor. Finally, a controlled system is stabilized in a state where a measured NO.sub.x concentration value coincides with the set NO.sub.x concentration value at a high speed.
摘要:
In the invention, an electrochemical cell including an oxygen reducing cathode, an oxygen generating anode and an electrolyte, and having both a deoxygenating function and an oxygen generating function is coupled to a chamber in such a manner that, when the oxygen concentration in the chamber is much higher than a predetermined value, the deoxygenating function is utilized to decrease the oxygen concentration and when the oxygen concentration in the chamber is much lower than the predetermined value, the oxygen generating function is utilized to increase the oxygen concentration so that the oxygen concentration in the chamber is maintained at the predetermined value.
摘要:
Apparatus and process are provided for measuring and monitoring the free active chlorine content of an aqueous solution. Regulation of the addition of chlorinating substances to maintain a desired chlorine level in drinking or bathing water is further provided. The apparatus preferably utilizes a measuring cell having electrodes comprised of a gold-nickel metallic alloy wherein gold is contained in an amount 90-97% by weight and nickel in an amount of 10-3% by weight. The measuring cell is connected to an electrical comparison circuit which controls a regulator or magnetic valve, in order to control the flow of active chlorine into the system.
摘要:
The disclosed system for controlling the chemical balance of a body of liquid, such as a swimming pool, compares the output of a chemical balance sensor immersed in the liquid with a standard indicative of the desired chemical balance, then dispenses a chemical into the pool to adjust its balance towards the desired balance. A timer limits the duty cycle of the dispenser to a relatively short dispensing interval followed by a longer non-dispensing interval permitting the dispensed chemical to disperse throughout the pool, the sensing and dispensing cycle then being repeated if appropriate. Preferably, there are a plurality of sensors, comparators and dispensers, each dispenser having a timer to limit its duty cycle. Also, preferably an over-range alarm is employed to alert an attendant when the chemical balance of the pool departs from a given range. Further, preferably the system is adjustable permitting both the desired balance level and the water limits defining the given range to be simultaneously adjusted. The system may be employed with either a dry or liquid chemical dispenser.
摘要:
A mobile agricultural sprayer having a control system for controlling the amount of chemical additive added to a water stream from a mobile storage tank in response to a chemical additive concentration detector is disclosed. The mobile sprayer utilizes a mobile water storage tank and at least one chemical additive tank which communicates with the water to be sprayed at a point between the tank and the sprinkler heads. A pump draws water from the storage tank and directs it under pressure to the sprinkler heads. The chemical additive is typically added in liquid form, such as a solution or a slurry, at a point preferably upstream of the pump inlet while concentration is measured at a point between the point of addition of the chemicals and the sprinkler heads and preferably before the inlet of the pump. The concentration detector transmits information to a monitor which controls the amount of chemical introduced into the water to be sprayed.