Abstract:
A method and apparatus is provided for obtaining mixtures in predetermined proportions of a primary liquid and secondary liquid while the stagnation pressure and mass flow of the primary liquid are varying. The apparatus comprises a passive device having a passageway extending therethrough. A first section of the passageway for receiving the primary liquid has a decreasing area. A second section of the passageway for receiving the secondary liquid has an area substantially equal to the minimum area of the first section.
Abstract:
Improved stabilized water slurries of carbonaceous materials are obtained by having present a condensation product or a salt thereof of a substituted phenol sulfonic acid which is(a) an arylphenol sulfonic acid,(b) an aralkylphenol sulfonic acid,(c) an arylphenol sulfonic acid and arylsulfonic acid mixture, or(d) an aralkylphenol sulfonic acid and arylsulfonic acid mixture,condensed with from about 0.5 to about 4.0 moles of formaldehyde per mole of sulfonic acid with the proviso that the weight ratio if substituted phenol sulfonic acid to arylsulfonic acid is from about 0.95:0.05 to about 0.05:0.95 in the mixtures, the condensation product being present in an amount sufficient to reduce viscosity of the water slurry of carbonaceous materials, to stabilize carbonaceous materials in the water network and to improve its pumpability. If desired, an acid form or a salt of the condensation product may be used.
Abstract:
Gas-fluidized ground coal, and coal dust slurried with fuel oil, are supplied to a reverse flow cyclone combustor which provides the functions of combustion and particulate removal. Coal dust borne by the fluidizing gas is passed through a cyclone scrubber utilizing fuel oil, and the resulting slurry is introduced into the combustor adjacent the inner surface of the combustor wall. Only the finest coal dust is employed in the slurry, to minimize oil consumption. Separative performance of the combustor is enhanced by introducing combustion air centrally adjacent the combustor outlet and gas-borne ground coal directly onto the cyclone walls.
Abstract:
A method of disposing of solid or paste-like paint waste in which the paint waste is firmly comminuted and mixed with waste oil and water, preferably with detergent present, to form a low-sedimentation rate slurry, and the slurry then incinerated to provide substantially complete combustion of said paint waste.
Abstract:
A process is provided using non-food or limited-feed agricultural residue and energy crops for energy production, such as ethanol or electricity generation. The agricultural plant material is harvested and baled. The bales are transported to the processing site for storage or immediate processing. The bale strings are first removed, and then the broken bales are shredded. The shredded plant material is then ground to a small size. The ground material is then pelletized to produce densified pellets of the agricultural plant material. The pellets are cooled and then stored or transported to an end user.
Abstract:
The invention relates to the transportation and preparation for combustion of coal used as a solid fuel at heat power plants and can find applications in coal-based power generation. The object of the invention is a complex use of energy resources contained in coal, reduction of power consumption for the realization of the process, expansion of solid fuel pipeline transport application in coal-based power generation, increase in the coal pipeline operation safety, and the environment protection. Prior to the transportation via a pipeline, the initial stream of coal is screened into coarse material and fines, the latter being pressed into cylindrical monolithic blocks. Coal is transported via a pipeline filled with aqueous salt solution with a density exceeding that of the transported material, the coarse coal and pressed blocks being loaded into the pipeline alternately. At the power station, the coal delivered in the aqueous salt solution is separated from the liquid carrier, rinsed with water, dried and ground with simultaneous capturing of released methane. The effluents of rinsing are evaporated by heat released at the condensation of the working medium of the power plant thermodynamic cycle. The remaining stripped solution is mixed with liquid medium separated from the coal and returned to the starting point of the process.
Abstract:
The invention provides a combustion process using comminuted fuel solids from a steam-driven shear field, with controlled water content and optionally coated with a combustion catalyst. The method allows fuel solids to burn for energy production at low temperatures. The lower temperatures avoid emissions of nitrogen oxides, and the process also yields a clean, friable ash that has economic value.
Abstract:
A hydrothermal reaction is performed on an aqueous medium without adding an oxidizing agent, and then another hydrothermal reaction is performed in the presence of an oxidizing agent, thereby reducing a chemical oxygen demand of the aqueous medium. An apparatus for performing a hydrothermal reaction has a fluid inlet being capable of introducing an oxidizing agent in a fluid form during a hydrothermal reaction.
Abstract:
A hydrothermal reaction is performed on an aqueous medium without adding an oxidizing agent, and then another hydrothermal reaction is performed in the presence of an oxidizing agent, thereby reducing a chemical oxygen demand of the aqueous medium. An apparatus for performing a hydrothermal reaction has a fluid inlet being capable of introducing an oxidizing agent in a fluid form during a hydrothermal reaction.