Patent ID: 9592481
Date: 2017-03-14
CPC Classifications: B01F,B01J,C01B,F23C,F23D,Y10T

Claim:
1. A method of producing a gas mixing device comprising: installing a first gas supplying section via which flammable gas is supplied; installing a second gas supplying section separately from said first gas supplying section via which combustion supporting gas is supplied separately from the flammable gas; installing a mixing vessel within which is mixed the flammable gas supplied via said first gas supplying section and the combustion supporting gas supplied via said second gas supplying section, within a combustion range of the gases; installing a discharge section via which mixed gas of the flammable gas and the combustion supporting gas is discharged from said mixing vessel; packing spherical packings which are packed in said mixing vessel and said discharge section and form there between a large number of narrow gas flow passages in said mixing vessel and said discharge section; predetermining diameters of said spherical packings to define an average diameter of flow passages among said narrow gas flow passages formed between spherical packings; wherein said predetermining comprises selecting diameters of said spherical packings to define an average diameter of flow passages among said narrow gas flow passages formed between spherical packings, as converted to a diameter of an equivalent circular tube; wherein in a diffusive mixing area which is an area near the supply ports of said first gas supplying section and said second gas supplying section, said selecting diameters of said spherical packings to define said average diameter of flow passages is predetermined to achieve a velocity of gas flowing in said narrow gas flow passages of said diffusive mixing area, when a prescribed minimum flow volume of said flammable gas and said combustion supporting gas is supplied from said first gas supplying section and second gas supplying section, that is higher than the burning velocity of the flammable gas and the combustion supporting gas in the diffusive mixing area; wherein in an area of the mixing vessel on a downstream side of the diffusive mixing area, said selecting diameters of said spherical packings to define said average diameter of flow passages is predetermined to achieve a velocity of gas flowing in said narrow gas flow passages of said downstream-side area that is higher than the burning velocity of the flammable gas and the combustion supporting gas in a homogeneous mixing state, when the prescribed minimum flow volume of said flammable gas and said combustion supporting gas is supplied from said first gas supplying section and said second gas supplying section; wherein the diameters of said spherical packings packed in said mixing vessel in said downstream-side area are larger than the diameters of said spherical packings packed in said diffusive area; wherein in said discharge section said selecting diameters of said spherical packings to define said average diameter of flow passages is predetermined to achieve a velocity of the mixed gas flowing in said narrow gas flow passages of said discharge section, when the prescribed minimum flow volume of said flammable gas and said combustion supporting gas is supplied from said first gas supplying section and second gas supplying section, that is higher than the burning velocity of said mixed gas at a process temperature of a downstream process where the mixed gas is processed; and wherein the diameters of said spherical packings packed in said mixing vessel in said downstream-side ara are larger than the diameters of said spherical packings packed in said discharge section.