Abstract:
A gas transfer system and method for dissolving at least one gas into a liquid. The system includes a gas transfer vessel also known as a reactor. A liquid inlet feed is connected to the reactor for transferring the liquid into the reactor. A gas inlet is connected to the reactor for feeding the gas into the reactor. An outlet is connected to the reactor for transferring the liquid with at least some of the gas therein away from the reactor. The system also includes a feed pump connected to the inlet feed to pressurize the contents of the inlet feed and the reactor, and a regenerative turbine connected to the feed pump and to the outlet. The various embodiments of the gas transfer system use pressurization in the gas transfer vessel to enhance gas transfer therein, minimize the net energy consumption, and retain highly supersaturated dissolved gas in solution. Some embodiments further help to reduce effervescence loss. The method of the present invention utilizes the system of the present invention and operates the feed pump and regenerative turbine to accomplish these advantages.
Abstract:
The invention concerns a process and an apparatus for continuously producing chlorine dioxide, the process comprising the steps of feeding chlorate ions, acid and hydrogen peroxide as aqueous solutions to a reactor; reducing chlorate ions in the reactor to chlorine dioxide, thereby forming a product stream in the reactor containing chlorine dioxide; feeding motive water to an conductor comprising a nozzle; bringing the motive water to flow through the nozzle and causing it to flow further through the eductor in an at least partially spiral or helical manner, transferring the product stream from the reactor to the eductor and mixing it with the motive water and thereby forming a diluted aqueous solution containing chlorine dioxide, and; withdrawing the diluted aqueous solution containing chlorine dioxide from the eductor.
Abstract:
A method and apparatus for dissolving a gas into a fluid which may contain at least one dissolved gas. The apparatus includes an inlet through which fluid enters the apparatus. The fluid is then housed in a chamber. The apparatus also includes a feed for the introduction of the gas into the fluid housed in the chamber. The chamber has a first portion having a diverging interior surface and a second portion having a cylindrical surface, which configuration enhances gas absorption. Further, the apparatus includes an acceleration plate which accelerates the flow of fluids and gas bubbles in the chamber. In addition, the apparatus includes a helix-shaped bubble harvestor which removes fugitive (undissolved) gas bubbles from the fluid flow and returns them to the chamber above the harvester to increase the probability that those bubbles will be dissolved in the fluid. Fluid having gas dissolved therein exits the chamber through an aperture through the bottom surface of the chamber into an outlet.
Abstract:
A method and apparatus for dissolving a gas into a fluid which may contain at least one dissolved gas. The apparatus comprises a conventional U-tube oxygenator which includes a U-tube member having an inlet for the introduction of the fluid and the gas to be dissolved into the fluid, and an outlet. The fluid is housed in the U-tube member. The apparatus further comprises a helix-shaped bubble harvestor located proximate the bottom of the inlet side of the U-tube member. The helix-shaped bubble harvestor removes fugitive (undissolved) gas bubbles from the fluid flow and returns them to the bubble swarm located above the helix-shaped bubble harvester. The resulting fluid, which contains a high concentration of dissolved gas, exits the outlet of the U-tube member.
Abstract:
An apparatus for dissolving a gas in a liquid employs means for determining the alpha factor of said liquid or a parameter related thereto and control means to control the pumping rate of liquid through the apparatus in response thereto thereby maintaining the gas to liquid flow volume fraction and hence the gas dissolution efficiency within desired limits.
Abstract:
The present invention provides a simple and efficient means for dissolving carbon dioxide gas discharged from sources such as thermoelectric power plants into the seawater and for isolating it at deep sea level. The means comprises an inverted U-shaped gas lift 1 having a shorter gas lift dissolving pipe 2 and a longer descending pipe 3 being connected with each other at the top, said gas lift dissolving pipe 2 is held at shallow sea level, and the lower end of the descending pipe 3 is opened at deep sea level. When carbon dioxide gas is injected in from the lower end of the gas lift dissolving pipe 2, the seawater is introduced from the lower end of the dissolving pipe by gas lift action of the carbon dioxide gas in the dissolving pipe 2, and the carbon dioxide is completely dissolved into the seawater until it reaches the upper end of the dissolving pipe. With its density increased due to dissolving of the carbon dioxide, the seawater is moved down by gravity to deep sea level through the descending pipe 3 and carbon dioxide is isolated at deep sea level.
Abstract:
Dispersing apparatus achieves solution of a soluble liquefied gas in a liquid solvent while permitting at least substantially full pressure on the liquefied gas to the point of incipient solution and thereafter affords desirable dispersion of the liquefied gas dissolving the solvent as well as providing fast and efficient flow of the resulting solvent into a liquidprocessing medium. The apparatus provides for suppressed vaporization of gas, even though such suppression occurs during an accompanying pressure drop, when the liquefied gas dissolves in the solvent, and further when the resulting solution disperses in the liquid-processing medium.