Three-phase cyclone separator with diversion cone in center

Abstract

The invention provides a three-phase cyclone separator with a diversion cone in the center, and used for removing oil and coke powder in delayed coking sulfur-containing wastewater. The three-phase cyclone separator comprises a solid-liquid cyclone separation section and a liquid-liquid cyclone separation section, the solid-liquid cyclone separation section comprises a large cylinder, a solid-liquid mixed phase double-cut inlet, a solid-liquid cyclone separation cavity, a double-cut solid discharge outlet and the diversion cone, and the liquid-liquid cyclone separation section comprises a cylindrical section, a conical section, a liquid-liquid cyclone separation cavity, a heavy phase outlet pipe and a light phase outlet pipe. The three-phase cyclone separator can realize oil, water and solid three-phase integrated separation, is compact and airtight in structure, does not need backwashing, and can realize long-period stable operation.

Description

technical field [0001] The invention relates to the field of equipment used in waste water treatment, chemical industry and environmental protection, and in particular to a three-phase cyclone separator with a diversion cone in the center. Background technique [0002] The sulfur-containing wastewater produced by delayed coking units in refineries has the characteristics of high concentrations of hydrogen sulfide and ammonia nitrogen, and contains more coke powder and emulsified oil. Before biochemical treatment and standard discharge of sulfur-containing wastewater, steam stripping is often used to remove sulfide and ammonia nitrogen in sulfur-containing wastewater. However, oil and coke powder in sulfur-containing wastewater will affect the stripping device. Firstly, the oil in the delayed coking sulfur-containing wastewater will lead to oil accumulation in the tray, thereby destroying the vapor-liquid balance and affecting the stripping operation process; secondly, the lo...

AI Technical Summary

Problems solved by technology

Among them, the gravity sedimentation method has a long separation time and low efficiency; the flocculation method needs to consume water treatment chemicals, and the operating cost is high; the automatic backwash filter is switched frequently, which is easy to block and cause outage. In addition, the device also has high purchase costs and maintenance costs. High problem, the overall use effect is not good; ceramic membrane is expensive, it is difficult to popularize and apply; cyclone separator has the advantages of low cost, simple operation, small footprint, high separation efficiency, so many companies use filtration-cyclone or gravity Sedimentation-cyclone combined process to remove oil and coke from sulfur-containing wastewater

However, the device used in the combined process is complex and occupies a large area. Therefore, it is of great significance to develop an integrated cyclone that can realize the three-phase separation of oil, water and coke powder.

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