Patent ID: 11931671
Assignee: QINGDAO UNIVERSITY OF TECHNOLOGY
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A three-stage tubular T-shaped degassing device with microbubble axial flow and spiral flow fields, comprising:
a microbubble uniform mixer, a microbubble cyclone and a rotational axial flow degasser which are coaxially disposed in sequence from left to right and are connected by flanges; wherein the rotational axial flow degasser, a conical spiral flow degasser and a jet reversing degasser are connected with an axial flow drainage three-way pipe into an assembly by flange plates at end parts of three pipe sections of the axial flow drainage three-way pipe; the three-stage tubular T-shaped degassing device is configured to implement: a horizontal degassing operation by uniformly mixing microbubbles and forming multiple strands of rotational axial flow; a vertical degassing operation by passing through a spiral runner and a conical spiral flow runner to form a single-strand conical spiral flow; and a vertical layered jet collision reversing degassing operation;
the microbubble uniform mixer is configured to convert a gas-liquid two-phase flow containing big bubbles into a microbubble uniform mixed axial flow, and comprises a uniform mixing pipe body and microbubble generation circular plates; the uniform mixing pipe body comprises a combined pipe body formed of a variable-section column pipe and a conical pipe, and comprises a columnar uniform mixing pipe section and a conical gathering and transporting pipe section; the microbubble generation circular plates are coaxially hierarchically arranged at equal intervals in an axial direction of the uniform mixing pipe body and are fixed to a lumen of the uniform mixing pipe body in an interference fit; and the microbubble generation circular plates are provided with variable-diameter micropores in radial directions of the microbubble generation circular plates;
the microbubble cyclone is configured to convert the microbubble uniform mixed axial flow into multiple strands of rotational axial flows containing microbubbles, and comprises a swirling pipe body, a microbubble spiral gear and a swirling imitated cone body; the uniform mixing pipe body and an axial flow column pipe body are connected with the swirling pipe body into an assembly through a flange connection; the swirling imitated cone body and the swirling pipe body are coaxially disposed, and the swirling imitated cone body comprises an ellipsoidal flow leading body, a columnar gear body and a conical flow guiding body; the microbubble spiral gear comprises microbubble spiral teeth uniformly arranged in a squirrel cage around the columnar gear body; the microbubble spiral gear is fixed to a lumen of the swirling pipe body in an interference fit, and a spiral gear slot is formed between two of the microbubble spiral teeth adjacently located;
the rotational axial flow degasser is configured to remove most microbubbles carried in the gas-liquid two-phase flow to form axial flow gas and axial flow liquid, and comprises the axial flow column pipe body, a rotational axial flow impeller, the axial flow drainage three-way pipe and an axial flow exhaust pipe; a microbubble uniform mixing rotational axial flow field is formed in the axial flow column pipe body; an axial flow conical groove is milled at a left side end of the axial flow exhaust pipe; the axial flow drainage three-way pipe comprises three connected pipe sections, namely an axial flow horizontal drainage pipe, an axial flow upper vertical drainage pipe and an axial flow lower vertical drainage pipe; a horizontal double-lumen drainage runner is formed between the axial flow horizontal drainage pipe and the axial flow exhaust pipe, an upper vertical double-lumen buffer runner is formed between the axial flow upper vertical drainage pipe and a gas flow gathering pipe; a lower vertical double-lumen drainage runner is formed between the axial flow lower vertical drainage pipe and a spiral flow exhaust pipe; the rotational axial flow impeller comprises rotational axial flow blades uniformly arranged around an outer ring surface of the axial flow exhaust pipe; blade surfaces of the rotational axial flow blades each adopt a combined surface formed of a plane and a curved surface, and a rotational axial flow blade slot is formed between two of the rotational axial flow blades adjacently located;
the conical spiral flow degasser is configured to remove a few of remaining microbubbles carried in the axial flow liquid to form spiral flow gas and spiral flow liquid, and comprises a spiral flow cone pipe body, a spiral flow liquid inlet circular plate, a spiral flow drainage pipe, a spiral flow gas gathering pipe, the spiral flow exhaust pipe, and a spiral flow impeller; arch-shaped liquid supply slots are milled at an upper end of the spiral flow cone pipe body; the spiral runner, a conical spiral flow runner and a columnar spiral flow runner are milled on an inner pipe wall of the spiral flow cone pipe body in sequence from top to bottom; a spiral runner conical spiral flow field is formed in the spiral flow cone pipe body; the spiral runner as a whole is inversely conical, a runner located at a bottom end of the spiral runner is combined with the conical spiral flow runner; an arc-shaped liquid transportation slot is milled on a plate body of the spiral flow liquid inlet circular plate, and a lower tubular boss is arranged at a center part of the spiral flow liquid inlet circular plate; the spiral flow drainage pipe is fixed to a bottom of the spiral flow cone pipe body through flange connection; a spiral flow conical groove is milled at a lower end of the spiral flow gas gathering pipe; the spiral flow impeller is embedded into a lower part of a lumen of the spiral flow drainage pipe, and is formed by welding a spiral flow guiding cover, a spiral flow rod and spiral flow blades in sequence; and
the jet reversing degasser is configured to remove small-particle-size liquid droplets carried in the axial flow gas and the spiral flow gas to form reversing gas and reversing liquid, and comprises a liquid flow separation disk, a reversing buffer column pipe body, a gas flow gathering pipe, a gas flow transportation pipe, jet nozzles, a reversing drainage pipe, and a three-way pipe joint; an upper tubular boss is arranged at a center part of the liquid flow separation disk; the axial flow exhaust pipe, the gas flow gathering pipe and the spiral flow exhaust pipe are connected with the three-way pipe joint into an assembly through threaded connection; a circular hole in a lower part of the reversing buffer column pipe body is fixed to the reversing drainage pipe through circumferential welding; a vertical double-lumen reversing runner is formed between the reversing buffer column pipe body and the gas flow transportation pipe; the gas flow gathering pipe gathers the axial flow gas and the spiral flow gas into one strand of mixed gas flow which is divided by the jet nozzles into multiple strands of mixed gas flows; and an upper part of the gas flow transportation pipe is provided with the jet nozzles arranged hierarchically in an axial direction of the gas flow transportation pipe.