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Solid Sorbents for Removal of Carbon Dioxide from Gas Streams at Low Temperatures
New low-cost CO2 sorbents are provided that can be used in large-scale gas-solid processes. A new method is provided for making these sorbents that involves treating substrates with an amine and/or an ether so that the amine and/or ether comprise at least 50 wt. percent of the sorbent. The sorbent acts by capturing compounds contained in gaseous fluids via chemisorption and/or physisorption between the unit layers of the substrate's lattice where the polar amine liquids and solids and/or polar ether liquids and solids are located. The method eliminates the need for high surface area supports and polymeric materials for the preparation of CO2 capture systems, and provides sorbents with absorption capabilities that are independent of the sorbents' surface areas. The sorbents can be regenerated by heating at temperatures in excess of 35 degrees C.
Date:
June 21, 2005
Creator:
Sirwardane, Ranjani V.
System:
The UNT Digital Library
Process to Accomplish Autothermal or Steam Reforming Via a Reciprocating Compression Device
The invention provides a method and apparatus for producing a synthesis gas from a variety of hydrocarbons. The apparatus (device) consists of a semi-batch, non-constant volume reactor to generate a synthesis gas. While the apparatus feeds mixtures of air, steam, and hydrocarbons into a cylinder where work is performed on the fluid by a piston to adiabatically raise its temperature without heat transfer from an external source.
Date:
September 21, 2004
Creator:
Lyons, David K.; James, Robert; Berry, David A. & Gardern, Todd
System:
The UNT Digital Library
Adjustable cutting tool holder
This patent application describes a device for varying the geometry of a cutting tool for use in machining operations.
Date:
September 21, 2000
Creator:
Steinhour, William Lee III; West, Drew; Honeycutt, Steve; Frank, Steven & Krishnamurthy, Kallutla
System:
The UNT Digital Library
Beam position monitor
An apparatus for determining the position of an x-ray beam relative to a desired beam axis where the apparatus is positioned along the beam path so that a thin metal foil target intersects the x-ray beam generating fluorescent radiation. A PIN diode array is positioned so that a portion of the fluorescent radiation is intercepted by the array resulting in a series of electrical signals from the PIN diodes making up the array. The signals are then analyzed and the position of the x-ray beam is determined relative to the desired beam path.
Date:
September 21, 2000
Creator:
Alkire, Randy W.; Rosenbaum, Gerold & Evans, Gwyndaf
System:
The UNT Digital Library
Aerogel Fingerprint Media
A fingerprint medium which is made of an aerogel having a predetermined density. The fingerprint medium may have a midrange density for forming plates or may be crushed forming a powder. The fingerprint medium may further include at least one of a metal and metal oxide to enhance characteristics desirable in a fingerprint medium.
Date:
September 21, 1999
Creator:
Miller, Fred S. & Andresen, Brian D.
System:
The UNT Digital Library
Cryogenic Homogenization and Sampling of Heterogeneous Multi-Phase Feedstock
An apparatus and process for producing a homogeneous analytical sample from a heterogeneous feedstock by: providing the mixed feedstock, reducing the temperature of the feedstock to a temperature below a critical temperature, reducing the size of the feedstock components, blending the reduced size feedstock to form a homogeneous mixture; and obtaining a representative sample of the homogeneous mixture. The size reduction and blending steps are performed at temperatures below the critical temperature in order to retain organic compounds in the form of solvents, oils, or liquids that may be adsorbed onto or absorbed into the solid components of the mixture, while also improving the efficiency of the size reduction. Preferably, the critical temperature is less than 77K (-196 C). Further, with the process of this invention the representative sample maybe maintained below the critical temperature until being analyzed.
Date:
September 21, 1999
Creator:
Doyle, Glenn M.; Ideker, Virgene D. & Siegwarth, James D.
System:
The UNT Digital Library
Method and Apparatus to Produce and Maintain a thick, flowing, Liquid Lithium first wall for Toroidal Magnetic Confinement DT Fusion Reactors
A system for forming a thick flowing liquid metal, in this case lithium, layer on the inside wall of a toroid containing the plasma of a deuterium-tritium fission reactor. The presence of the liquid metal layer or first wall serves to prevent neutron damage to the walls of the toroid. A poloidal current in the liquid metal layer is oriented so that it flows in the same direction as the current in a series of external magnets used to confine the plasma. This current alignment results in the liquid metal being forced against the wall of the toroid. After the liquid metal exits the toroid it is pumped to a heat extraction and power conversion device prior to being reentering the toroid.
Date:
October 21, 1998
Creator:
Woolley, Robert D.
System:
The UNT Digital Library
Method for measuring Particulate and Gaseous Metals in a fluid stream, Device for measuring Particulate and Gaseous Metals in a fluid stream
A method for analyzing metal in a fluid is provided comprising maintaining a first portion of a continuous filter media substrate at a temperature coinciding with the phase in which the metal is to be analyzed; contacting the fluid to a first portion of said substrate to retain the metal on the first portion of said substrate; preventing further contact of the fluid to the first portion of substrate; and contacting the fluid to a second portion of said substrate to retain metal on the second portion of the said substrate while simultaneously analyzing the first portion for metal. Also provided is a device for the simultaneous monitoring and analysis of metal in a fluid comprising a continuous filter media substrate; means for maintaining a first portion of said filter media substrate at a temperature coinciding with the phase in which the metal is to be analyzed; a means for contacting the fluid to the first portion of said substrate; a means for preventing further contact of the fluid to the first portion of substrate; a means for contacting the fluid to a second portion of said substrate to retain metal on the second portion of the said substrate; and …
Date:
October 21, 1998
Creator:
Farber, Paul S. & Huang, Hann-Shen
System:
The UNT Digital Library
Rack Protection Monitor
A hardwired, fail-safe rack protection monitor utilizes electromechanical relays to respond to the detection by condition sensors of abnormal or alarm conditions (such as smoke, temperature, wind or water) that might adversely affect or damage equipment being protected. When the monitor is reset, the monitor is in a detection mode with first and second alarm relay coils energized. If one of the condition sensors detects an abnormal condition, the first alarm relay coil will be de-energized, but the second alarm relay coil will remain energized. This results in both a visual and an audible alarm being activated. If a second alarm condition is detected by another one of the condition sensors while the first condition sensor is still detecting the first alarm condition, both the first alarm relay coil and the second alarm relay coil will be de-energized. With both the first and second alarm relay coils de-energized, both a visual and an audible alarm will be activated. In addition, power to the protected equipment will be terminated and an alarm signal will be transmitted to an alarm central control. The monitor can be housed in a separate enclosure so as to provide an interface between a power supply for …
Date:
October 21, 1998
Creator:
Orr, Stanley G.
System:
The UNT Digital Library
A Raman Fiber Optic Probe Assembly for use in Hostile Environments
This invention provides a device for Raman spectroscopic measurement of composition and concentrations in a hostile environment by the use of a first fiber optic as a means of directing high intensity monochromatic light from a laser to the hostile environment and a second fiber optic to receive the lower intensity scattered light for transmittal to a monochromator for analysis. To avoid damage to the fiber optics, they are protected from the hostile environment. A preferred embodiment of the Raman fiber optic probe is able to obtain Raman spectra of corrosive gases and solutions at temperatures to 600 F and pressures up to 2000 psi. The incident exciting fiber optic cable makes an angle of substantially 90{degree} with the collecting fiber optic cable. This 90{degree} geometry minimizes the Rayleigh scattering signal picked up by the collecting fiber, because the intensity of Rayleigh scattering is lowest in the direction perpendicular to the beam path of the exciting light and therefore a 90{degree} scattering geometry optimizes the signal to noise ratio.
Date:
September 21, 1998
Creator:
Schmucker, John E.; Falk, Jon C.; Archer, William B. & Blasi, Raymond J.
System:
The UNT Digital Library
Rippled beam free electron Laser Amplifier
A free electron laser amplifier provides a scalloping annular electron beam that interacts with the axial electric field of a T{sub 0n} mode. A waveguide defines an axial centerline and . A solenoid arranged about the waveguide produces an axial constant magnetic field within the waveguide. An electron beam source outputs a annular electron beam that interacts with the axial magnetic field to have an equilibrium radius and a ripple radius component having a variable radius with a ripple period along the axial centerline. An rf source outputs an axial electric field that propagates within the waveguide coaxial with the electron beam and has a radial mode that interacts at the electron beam at the equilibrium radius component of the electron beam.
Date:
April 21, 1998
Creator:
Carlsten, Bruce E.
System:
The UNT Digital Library
Inductive-storage pulse-circuit device
Inductive storage pulse circuit device is disclosed which is capable of delivering a series of electrical pulses to a load in a sequential manner. Silicon controlled rectifiers as well as spark gap switches can be utilized in accordance with the present invention. A commutation switching array is utilized to produce a reverse current to turn-off the main opening switch. A commutation capacitor produces the reverse current and is initially charged to a predetermined voltage and subsequently charged in alternating directions by the inductive storage current.
Date:
January 21, 1982
Creator:
Parsons, William M. & Honig, Emanuel M.
System:
The UNT Digital Library
Apparatus and method for pyrolyzing biomass material
A technique for pyrolyzing biomass materials is disclosed wherein a hot surface is provided having a predetermined temperature which is sufficient to pyrolyze only the surface strata of the biomass material without substantially heating the interior of the biomass material thereby providing a large temperature gradient from the surface strata inwardly of the relatively cool biomass materials. Relative motion and physical contact is produced between the surface strata and the hot surface for a sufficient period of time for ablative pyrolyzation by heat conduction to occur with minimum generation of char.
Date:
August 21, 1981
Creator:
Diebold, J. P. & Reed, T. B.
System:
The UNT Digital Library
Device for Washing Oil Wells.
Patent for "a device for washing, cleaning, and sterilizing oil wells" (lines 10-11), including illustrations.
Date:
November 21, 1922
Creator:
Smith, Edward D. & Smith, Rebah Tillery
System:
The Portal to Texas History
Knee Pad.
Patent for an improved knee pad, which provides better ventilation and cushioning to the knee, including illustrations.
Date:
November 21, 1922
Creator:
Rylander, Parrish H.
System:
The Portal to Texas History
Vehicle.
Patent for improvements to vehicle structure. This includes adjustments to the wheel base for better steering movements and vehicle capacity.
Date:
November 21, 1922
Creator:
Furlong, Martin J.
System:
The Portal to Texas History
Clothespin
Patent for an improved version of the clothespin, which is simple to use, durable, and cheap to manufacture.
Date:
March 21, 1922
Creator:
Ingersoll, Charles James
System:
The Portal to Texas History
Hydraulic Classifier.
Patent for hydraulic classifier for the treatment of ore. The invention subjects settling solid particles to a secondary classification and prevent the contamination of the settling solids before they are discharged.
Date:
March 21, 1922
Creator:
Allen, Charles
System:
The Portal to Texas History
Ice-Holding Device.
Patent for a device to hold ice upon running-boards of vehicles (lines 10-11.) This device is flexible in use (it can be pulled up to reveal the ice, and put back out of the way), simple in design, and cheap to construct.
Date:
March 21, 1922
Creator:
Barton, Warren D.
System:
The Portal to Texas History
Combined Cotton Chopper and Cultivator.
Patent for improved combined cotton choppers and cultivators where the operation of the chopper blades can be instantly controlled from the seat. This is combined with the cultivator shovels carried on the machine to the rear of the revolving chopper blades that are used to cultivate the soil.
Date:
February 21, 1922
Creator:
Whitaker, George
System:
The Portal to Texas History
Metallic Roof.
Patent for a metallic roof in which section edges are secured so that they do not become disconnected, intentional bracing prevents sagging, and securing the roof does not require the use of nails, which prevents leaks.
Date:
February 21, 1922
Creator:
Crawford, Hezekiah H.
System:
The Portal to Texas History
Seed Planter and Marker.
Patent for seed planting and marking machines specifically for planting corn, cotton, or any other seeds required planting in rows. This device allows row planting without a check cord or line as it will drop seeds at regular and variable (adjustable) intervals and mark hills.
Date:
February 21, 1922
Creator:
Sprowl, William L.
System:
The Portal to Texas History
Staple-Setting Device.
Patent for a staple setting device. This invention sets staples in blind slats and sticks with a special reference to assist with the setting of staples for the purposes of both construction and repair.
Date:
February 21, 1922
Creator:
Chamberlain, Kit Carson
System:
The Portal to Texas History
Motorcycle-Stand.
Patent for a motorcycle stand that can be released manually through a lever near the saddle to lock the stand into place until the operator unlocks it.
Date:
July 21, 1921
Creator:
Swenson, Carl J.
System:
The Portal to Texas History