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| Number | Title | Issue Date |
| 6916891 | Attrition resistant inorganic microspheroidal particles Microspheroidal particles, suitable as fluidized bed catalyst supports, are prepared by incorporating a portion of small, preferably recycled, particles into a slurry of inorganic oxide sol and inorganic particles which is spray dried to form microspheroidal particl... | 07/12/2005 |
| 6558454 | Method for removal of vapor phase contaminants from a gas stream by in-situ activation of carbon-based sorbents A process for removing vapor phase contaminants from a gas stream includes the step of adding a raw carbonaceous starting material into a gas stream having an activation temperature sufficient to convert the raw carbonaceous starting material into an acti... | 05/06/2003 |
| 6451094 | Apparatus and method for removal of vapor phase contaminants from a gas stream by in-situ activation of carbon-based sorbents A process for removing vapor phase contaminants from a gas stream includes the step of adding a raw carbonaceous starting material into a gas stream having an activation temperature sufficient to convert the raw carbonaceous starting material into an acti... | 09/17/2002 |
| 5792720 | Method and apparatus for manufacturing TEDA-impregnated active carbon in fluidized bed type absorbing tower by generating TEDA vapor by means of hot air A method and an apparatus using a fluidized bed type adsorbing tower for manufacturing a TEDA-impregnated active carbon which is used for removing toxic materials from a fluid. A base active carbon is dried to remove the water component, and the dried act... | 08/11/1998 |
| 5498589 | Process for the production of carbon molecular sieves A process is disclosed for preparing a carbon molecular sieve used for the separation of oxygen from nitrogen, which comprises the steps of: (a) milling hard coal to a grain size of 95% | 03/12/1996 |
| 5187141 | Process for the manufacture of activated carbon from coal by mild gasification and hydrogenation A process is provided for forming activated carbon from coal in the particulate state. The coal is first dried at a temperature sufficiently high to effect removal of moisture therefrom but below the temperature at which contained volatile matter vaporize... | 02/16/1993 |
| 4978649 | Porous carbonaceous material The present invention relates to physical chemistry. The material is made as a three-dimensional matrix with a pore volume of from 0.2 to 1.7 cm3 /g. The matrix is formed by bent layers of carbon of 100-10,000 Å thickness and 100-10000 Å radius of... | 12/18/1990 |
| 4880765 | Process for producing carbon molecular sieves Process for producing carbon molecular sieves for separating oxygen and nitrogen by treating a carbonaceous product with inert gas and steam in a vibrating oven and further treating said product with benzene at a high temperature in a vibrating oven to th... | 11/14/1989 |
| 4615993 | Method and device for carrying out gas/solid reactions particularly the activation and re-activation of activated carbon Untreated coal is activated with steam at temperatures of 600° to 950° C. in a vibrating fluid bed, which is directly heated. The untreated coal is pre-dried by counter-current passage of the waste gases from the reaction either during feeding of the un... | 10/07/1986 |
| 4273619 | Apparatus for continuously carbonizing and activating carbonaceous materials An apparatus for carbonizing and then activating carbonaceous materials in a continuous process consisting of an elongated, slightly inclined rotary retort into the higher end of which the material is deposited and from the lower end of which the product ... | 06/16/1981 |
| 4148752 | Production of activated carbon in a reactor having a lower static layer and an upper fluidized layer In the production of activated carbon by passing a preheated gaseous activation medium through a zone containing a bed of carbon-containing material while indirectly heating to maintain a temperature of about 500° to 1100° C., supplying carbon-containin... | 04/10/1979 |
| 4107084 | Process for activating carbonaceous material There is disclosed an improved process for activating carbon in a fluidized bed system which includes continuous activation at a temperature between 1,000° F. and 2,200° F. using a specific composition of fluidizing gases. The thermal energy required to... | 08/15/1978 |
| 4002533 | Two-step process for conditioning sized coal and resulting product An improved two-step fluid bed process for conditioning sized, agglomerative, high volatile bituminous coal is disclosed. The agglomerative bituminous coal is first crushed and sized for fluidization. A first treatment is conducted under oxidizing conditi... | 01/11/1977 |
| 3976597 | Fluidized bed process for making activated carbon including heating by conduction through the distributor plate There is disclosed an improved process for activating carbon in a fluidized bed which includes continuous activation at a temperature between 1,000°F. and 2,200°F., preferably 1,700°F. to 1,950°F. in the bed. The activation step includes heat transfer... | 08/24/1976 |
