Production of monoxides in the form of fine particles, comprises injecting raw material dispersion into hot gas stream of thermal reactor by pulsating combustion, spraying and/or atomization, and injecting a coating mixture to the reactor

摘要

The production of monoxides in the form of fine particles, comprises injecting a raw material dispersion (RD) into a hot gas stream (HGS) of a thermal reactor at feeding points by pulsating combustion, spraying and/or atomization, injecting further fuel into the hot gas stream at a region that is downstream to the feeding point of the dispersion, cooling the hot gas stream at the region, and injecting a coating mixture in gaseous form into the reactor. The raw material dispersion (RD) consists of a mixture of raw materials (RM) having all the components of the spherical solid particles. The production of monoxides in the form of fine particles, comprises injecting a raw material dispersion (RD) into a hot gas stream (HGS) of a thermal reactor at feeding points by pulsating combustion, spraying and/or atomization, injecting further fuel into the hot gas stream at a region that is downstream to the feeding point of the dispersion, cooling the hot gas stream at the region, and injecting a coating mixture in gaseous form into the reactor. The raw material dispersion (RD) consists of a mixture of raw materials (RM) having all the components of the spherical solid particles (P) to be formed with a size of 10-50 mu m, and an immiscible component (K). The formed particles are separated from the hot gas stream. Educts for the raw material mixture and liquid and/or solid inorganic and/or organic substances are present in the form of a solution, suspension or dispersion. The substances are dissolved, suspended or dispersed in inorganic and/or organic liquids. Additive (20-50% related to the employed educt quantity) and/or inorganic substances, which release additional calories of energy into the process, are added to the raw material mixture. The raw material mixture is treated with a single or multiple-stage wet-chemical process in an intermediate step by using mechanical shear forces for the production of the dispersion. The immiscible liquid components are additionally added to the raw material mixture before the production of the dispersion. The raw material dispersion is stabilized with the help of emulsifier or a surfactant. The gas flow resulting from the pulsating combustion pulses in a pulsation reactor at a frequency of 10-70 Hz. The particles of the coating mixture are partially coated. A coating additive component such as organic and/or inorganic solvents, water, acid and/or base, surfactants and/or emulsifiers is added to the coating mixture, which is processed to a coating solution or suspension and which is atomized in the thermal reactor. Independent claims are included for: (1) thermal reactor for the production of monoxides in the form of fine particles; and (2) monoxide in the form of powder.