Abstract:
A device and method for charging processing plants, in particular, combustion furnaces (1), is disclosed, in which a flowing process material (3), which has solid components (6) in addition to liquid components (5), is introduced into the processing plant (1), by means of a conveyor line (2) under pressure. According to the invention, advantageous charging conditions may be achieved, by means of mixing the process material (3) before pressurization.
Abstract:
A method may include preparing a coke slurry, preparing a lignite slurry separate from the coke slurry, and combining the coke slurry with the lignite slurry to form a coke/lignite slurry.
Abstract:
A device and method for charging processing plants, in particular, combustion furnaces (1), is disclosed, in which a flowing process material (3), which has solid components (6) in addition to liquid components (5), is introduced into the processing plant (1), by means of a conveyor line (2) under pressure. According to the invention, advantageous charging conditions may be achieved, by means of mixing the process material (3) before pressurization.
Abstract:
A method may include preparing a coke slurry, preparing a lignite slurry separate from the coke slurry, and combining the coke slurry with the lignite slurry to form a coke/lignite slurry.
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:
With the system of the present invention, high sulfur content coalnulla mixture of coal, sulfur compounds and ash (e.g., stone and slate)nullis crushed, and a proportion of the higher density sulfur compounds and ash are separated from the lower density coal. The result of the separation process, the continuous supply of the separated coal mixture, is then continuously monitored for sulfur content. The system uses electronic controls to vary the proportion of sulfur compounds and ash which are separated out and removed from the coal mixture so as to maximize the economics of reducing the sulfur content, and of generating power. A centrifugal separator is used for continuously separating the relatively dense high sulfur content coal and ash from the coal mixture. This separator preferably has a substantially rotationally symmetric drum element which rotates about a horizontal central axis. The proportion of sulfur compounds and ash which are removed is controllable by controlling the particle size of the crushed coal mixture, controlling the speed of the separator and controlling the separator openings which allows the high-density material to emerge.
Abstract:
The present invention makes possible the economic and environmental use of high sulfur coal by removing the sulfur at the power generating plant. This process reduces the risk of fire, explosion, and freezing in storing and transporting reclaimed, ground coal, and moves the reclamation process to the site of the power plant, while providing electronic controls to monitor and adjust the reclamation process to produce controlled feedstock for the power plant.