RU2018124154A - SCRUBBER VENTURI - Google Patents

Claims (5)

A Venturi scrubber, including a confuser, a neck, a diffuser, an irrigation system, a drip trap, and an irrigation device is placed in the confuser, consisting of a water supply pipe made in the form of two mutually perpendicular sections, one of which is placed axisymmetrically to the confuser, and at its end, facing the nozzle of the irrigation system is fixed to the neck side, while the inlet with a diameter d _{1 of the} confuser and the outlet with a diameter d _{3 of the} diffuser are connected respectively to the inlet and outlet pipes odes, and the diffuser outlet connected to the discharge pipe is tangentially connected to the lower part of the cylindrical body of the once-through cyclone, which serves as a droplet eliminator, while the axes of the diffuser and the cyclone body are mutually perpendicular, and the lower part of the cyclone body is connected to a conical hopper for removing sludge, and the upper part connected to a conical chamber for the removal of purified gas, while the following aspect ratios of a circular Venturi pipe are aerodynamically optimal: neck length

, confuser length

, diffuser length

, where d ₂ is the diameter of the neck; α ₁ - narrowing angle of the confuser, α ₁ = 15 ÷ 28 °, α ₂ - expansion angle of the diffuser α ₂ = 6 ÷ 8 °; moreover, at low speeds of gas and fine dust should be used Venturi pipes with an elongated neck

characterized in that the nozzle of the irrigation system contains a housing which is made with an inlet made in the form of a confuser and a throttle hole coaxial with it, and the swirl chamber is made in the form of a cylindrical cup, the axis of which in the plane of the drawing is perpendicular to the axis of the inlet and throttle openings, the inlet and throttle openings are located tangentially with respect to the swirl chamber, and a nozzle insert is located coaxially with the swirl chamber, inside of which there are successively arranged three calibrated holes laid and aligned with each other and the cylindrical surface of the swirl chamber: conical, cylindrical and shaped in the form of a cylindrical part with a rounding chamfer at the outlet, while the diameter of the cylindrical hole of the nozzle insert is equal to the diameter of the upper base of the truncated cone of the conical hole and the diameter of the cylindrical part of the shaped hole or the nozzle of the irrigation system comprises a hollow body consisting of a cylindrical part with an external thread for supplying liquid and fixed in the lower part of the housing, a union nut with a throttle washer and a nozzle, which fixes a hollow screw swirl, made in the form of a truncated cone with through screw grooves, in a cylindrical hole of the housing, pressing it to the strainer, while a fluid flow divider is attached to the end surface of the union nut , which is made in the form of a truncated tetrahedron, the ribs of which are rods with blades fixed to them with stops in such a way that there is the possibility of their rotation from the flows emanating from From the throttle washer, in addition to the end face of the union nut, coaxial to the nozzle nozzle, a diffuser is attached with at least three ejection openings, the outlet cross section of which is blocked by a perforated plate, and an atomizer in the form of a cylindrical shell is connected axisymmetrically to the diffuser.