| 摘要 |
A reactor (110) serves to combust residual carbon in fine particulate matter, remove a contaminant from fine particulate matter, or change the composition of fine particulate matter. The reactor output is processed by particle collection devices (115, 125, 140, 155, 175) and heat exchangers (135, 150, 165) to provide particle outputs (118, 124, 131, 144, 159) of different sizes. A contaminant, such as carbon or a metal, is combusted, vaporized, volatized, broken down, or substantially appears on one particle output (144) so that another particle output and the exhaust gas (142) are substantially contaminant-free. Different outputs can also be selectively mixed, as desired, to product a combined output (171). Fly ash and silica fume can be processed separately or together to reduce the amount of unburned carbon in both. Metals can also be removed from the fine particulate matter. Kaolin can also be processed to produce metakaolin. |
| 主权项 |
1. An apparatus, comprising:
a single, dilute solids phase reactor having a top, a central section, and a bottom section with an exit port, and a top particle output port, the top particle output port being located on or near the top to provide for removal of exhaust gas and particles from the reactor, and the port being located on or near the bottom for removal of particles other than those particles passing through said top particle output port; a plurality of particle injection devices and a plurality of air injection devices situated at a plurality of heights on the reactor and arranged so fine particulate matter is injected into the reactor at a height above an adjacent air injection device, the fine particulate matter having a contaminant other than residual carbon; a particle collection and cooling section (115) to separate the exhaust gas and particles from the top particle output port of the reactor, and comprising a primary particle collection device comprising a heat exchanger operating in a preselected temperature range, and a particle exit port to remove a portion of the particles which are substantially absent said contaminant, within said preselected temperature range, and an exit port (126) to convey cooled particles to a final particle collection device comprising a heat exchanger, whereby the cooled particles collected in said final particle collection device contain said contaminant. |
