The present invention concerns a process for producing biodiesel with bifunctional heterogeneous acidic catalysts from acidic raw materials, such as fatty acids and mixtures of fatty acids with triglycerides.

A method for manufacturing a coal additive that is added to coal as a solid fuel to microgranulate and uniformize the coal, thereby increasing the combustion area of the coal, leading to a decrease in combustion time and a reduction in unburned carbon generation. A raw material for the coal additive is prepared as a liquid phase by placing, in a container, a fermented liquid, which is an extract obtained from the incubation of fermenting bacteria (enzyme) in fruit residues, and an emulsion of metal ions and bentonite or gelrite, followed by mixing. Coal may be subjected to microgranulation and uniformization as a solid fuel by addition of the liquefied additive to the coal. The degree of coal powder is improved to increase combustion area, thereby shortening combustion time and reducing generation of unburned carbon, leading to increasing energy efficiency, which is environmentally friendly and safe and has remarkable effects.

The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions.

The present invention relates to a multifunctional spontaneous combustion inhibitor for bituminous coal in the form of a foam concentrate, which may inhibit the spontaneous combustion of bituminous coal, prevent the scattering of bituminous coal, prevent the occurrence of problems due to spontaneous combustion, such as a power plant operation failure, bituminous coal waste, and odor generation, enables a bituminous coal power plant to be operated economically, safely and environmentally friendlily through the use of inexpensive bituminous coal, and may be used even at −20° C. by improving the pour point thereof. The present invention is characterized in that a spontaneous combustion inhibitor is prepared in the form of a water-soluble foam concentrate by using an antioxidant, a volatile fraction activation inhibitor, and an emulsifier compound, is mixed with water and air, and is distributed and applied to bituminous coal in a foamed state.

A real time additive processing system for crude oil or refined fuel products is coupled to a fuel transport line that transfers fuel from one storage tank to another storage tank. The fuel additive processing system includes a fuel additive storage tank coupled to a liquid conduit having a liquid pump with a speed/stroke controller that regulates the liquid pump. The liquid conduit is coupled to the fuel transport line at a fuel additive injection nozzle. The fuel additive processing system also includes a flow rate transmitter and a chemical or physical property analyzer coupled to the fuel transport line downstream of the additive injection nozzle. The fuel additive processing system includes a flow controller that communicates with the liquid pump speed/stroke controller, flow rate transmitter and chemical or physical property analyzer. A remote system allows selective control of the flow controller.

Proposed is a pretreatment desulfurization system including: a first chute for supplying a pretreatment apparatus with coal transported by a belt conveyor; a pretreatment apparatus for immersing the supplied coal in a catalyst mixture obtained by mixing a desulfurization catalyst and water, thereby desulfurizing the coal; a mesh conveyor for separating the coal being immersed in the catalyst mixture and having passed through the pretreatment apparatus, into a liquid phase and a catalyst-treated coal; a mesh conveyor for transporting the catalyst-treated coal; and a storage tank for storing the transported catalyst-treated coal.

A device for online co-production of carbon-containing precursors and high-quality oxygen-containing fuels from biomass pyrolysis gas includes a spray polymerization reactor, where a biomass pyrolysis gas inlet and a polymerization agent inlet are provided on the spray polymerization reactor, an outlet of the spray polymerization reactor is connected to an inlet of a catalytic reactor, and an outlet of the catalytic reactor is connected to an inlet of a condenser; a spray pipe is arranged at a top in the spray polymerization reactor, and a detachable collector for collecting the carbon-containing precursors is mounted at a bottom of the spray polymerization reactor; and a catalyst is arranged in the catalytic reactor, such that micromolecular pyrolysis gas is catalytically converted into the high-quality oxygen-containing fuels.

A method and apparatus for producing a solid biofuel from hydrocarbonaceous feedstock is described. The process includes loading a hydrocarbonaceous feedstock into a reactor vessel, adding an aqueous catalyst solution into the reactor vessel, wherein the catalyst solution resides at the bottom of the reactor vessel under the hydrocarbonaceous feedstock position, heating the reactor vessel at or above 170° C. to catalyze a reaction of hydrocarbonaceous feedstock under saturated steam conditions for a time sufficient to yield a polymeric biofuel, and isolating the polymeric biofuel from the reactor vessel.

A method of dissolving a gas hydrate in a pipeline includes introducing a gas hydrate dissolving solution into the pipeline and allowing the gas hydrate dissolving solution to at least partially dissolve the gas hydrate in the pipeline. The gas hydrate dissolving solution includes cesium formate, potassium formate, or both, and has a flash point of greater than 50° C.

The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions.