CN-121974432-A - Air floatation equipment and control method

CN121974432ACN 121974432 ACN121974432 ACN 121974432ACN-121974432-A

Abstract

The application discloses air floatation equipment and a control method, which belong to the technical field of produced water treatment equipment, wherein the air floatation equipment comprises a tank body and a drainage structure, the tank body is provided with a carrier gas inlet, a liquid inlet, a water phase outlet and an organic phase overflow port, the drainage structure is provided with a guide channel, the upper side and the lower side of the guide channel are both open structures, one end of the guide channel is adjacent to the liquid inlet, the other end of the guide channel extends towards the central area of the tank body along a spiral path so as to guide liquid entering a containing cavity to form a swirling flow field, organic phases in the liquid float upwards and are separated under the action of the swirling flow field and are discharged through the organic phase overflow port, part of the organic phases are attached to the inner wall of the guide channel, and separated water phase is discharged through the water phase outlet. The application provides air floatation equipment and a control method, which aim to solve the technical problems that the existing air floatation equipment relies on air bubble floatation to realize oil-water separation, so that the coalescing capacity of tiny oil drops is insufficient, the equipment separation efficiency is low, the equipment size is large and the processing capacity is limited.

Inventors

LI YUHAO
LI HONG
LU WEN

Assignees

山东豪迈机械制造有限公司

Dates

Publication Date: 20260505
Application Date: 20260408

Claims (10)

1. The utility model provides an air supporting equipment, its characterized in that, includes a jar body and drainage structure, the jar body is equipped with and holds the chamber, drainage structure set up in hold the chamber, the jar body be equipped with carrier gas entry, inlet, aqueous phase export and organic phase overflow mouth, carrier gas entry set up in the top of jar body, the aqueous phase export set up in drainage structure's below, organic phase overflow mouth set up in drainage structure's top, drainage structure is equipped with guide channel, guide channel's upside and downside are open structure, guide channel's one end is adjacent the inlet, the other end is followed the spiral path orientation the central region of jar body extends, so that the guide gets into hold the liquid in chamber and form the whirl field, organic phase in the liquid is in the whirl field effect come up the separation and pass through organic phase overflow mouth discharges, and part the organic phase adhere to guide channel's inner wall, the aqueous phase after the separation is passed through the aqueous phase export discharges.
2. An air flotation device according to claim 1, wherein the drainage structure is arranged in a spiral manner to form the guide channel, the liquid inlet is arranged on the side wall of the tank body, the initial end of the guide channel is positioned on the liquid outlet path of the liquid inlet, the drainage structure is provided with a connecting end connected with the inner wall of the tank body, and the outer side surface of the drainage structure at the connecting end is arranged tangentially to the inner wall of the tank body, so that liquid entering the accommodating cavity flows spirally along the drainage structure.
3. An air flotation device according to claim 2, further comprising a cleaning means, the drainage structure extending in the axial direction of the tank, the cleaning means comprising a cleaning blade provided on the inner wall of the guide channel on the side close to the center of the swirling flow, the cleaning blade being movably provided with respect to the drainage structure to clean the organic phase attached to the guide channel.
4. An air flotation device according to claim 3, wherein the cleaning means further comprises a driving member, the cleaning blade being arranged in the axial direction of the guide passage, an output shaft of the driving member being connected to the cleaning blade, the driving member driving the cleaning blade to move in the axial direction of the tank.
5. An air flotation device according to claim 4, wherein the cleaning means further comprises a mounting member provided at the bottom of the cleaning blade, the cleaning blade being fixed to the mounting member, the cleaning blade having an abutment wall abutting against the inner wall of the guide passage.
6. An air flotation device according to claim 5, wherein the cleaning blade comprises a fixed wall connected to the mounting member and a guide wall connecting the fixed wall and the attaching wall, the mounting member being provided with a storage chamber and a guide port communicating with the storage chamber, the guide wall being provided obliquely to guide the organic phase attached to the guide passage to the guide port.
7. The air flotation device according to claim 1, wherein the organic phase overflow port is located at the upper portion of the tank body, the water phase outlet is located at the bottom of the tank body, an overflow baffle is arranged above the drainage structure, one end of the overflow baffle is fixedly connected to the inner wall of the containing cavity, the other end of the overflow baffle faces the axis of the tank body and extends upwards in an arc shape, and the connecting end of the overflow baffle and the inner wall of the containing cavity is located below the organic phase overflow port.
8. An air flotation device according to claim 1, wherein an auxiliary separation mechanism is arranged below the drainage structure, the auxiliary separation mechanism comprises a vibrator and a separation net, the separation net is arranged between the water phase outlet and the drainage structure, and the vibrator drives the separation net to vibrate so that the organic phase attached to the separation net coalesces and floats upwards.
9. An air flotation device according to claim 1, wherein the inlet comprises at least a first inlet and a second inlet, the first inlet being located at a height corresponding to the top of the drainage structure and the second inlet being located at a height corresponding to the middle of the drainage structure.
10. A control method applied to an air flotation device according to any one of claims 1 to 9, the control method comprising: Obtaining the concentration of an organic phase of liquid to be treated entering the air floatation device; determining a target guiding time of the drainage structure according to the organic phase concentration; determining the rotational flow strength required to be formed by the drainage structure according to the target guiding time, and matching the parameters of the drainage structure according to the rotational flow strength; And determining the target liquid flow entering the air floatation device according to the drainage structure and the target guiding time.

Description

Air floatation equipment and control method Technical Field The application belongs to the technical field of produced water treatment equipment, and particularly relates to air floatation equipment and a control method. Background The produced water usually contains a large number of dispersed oil drops and bubbles, and needs deoiling treatment to meet the discharge or reinjection requirements. When a conventional air floatation device is in operation, circulating water and carrier gas are mixed and dispersed in an ejector or a mixer to form a gas-water mixture, and then the gas-water mixture and produced water are mixed and enter an air floatation cavity. After entering the air floatation cavity, the dispersed tiny oil drops are adsorbed and combined in the air bubble floatation process, so that the buoyancy of the oil drops is obviously increased, and the oil phase floatation is promoted and the oil-water separation is realized. However, the existing air flotation device focuses on a bubble-oil drop coupling mechanism, so that the separation efficiency is limited when treating produced water containing a high proportion of tiny oil drops or high viscosity and strong emulsified state. The equipment occupies a large volume to ensure enough guiding time and bubble contact opportunities, so that the processing capacity of the device is limited, the requirements of a high-flux scene of produced water are difficult to meet, the coalescing rate of fine oil drops is low, the problems of fluctuation of the concentration of the produced water and oil and unstable treatment are easy to occur, and the maintenance problems such as floc blockage and the like can be generated in long-term operation, so that the operation and maintenance cost is further increased. Disclosure of Invention The application provides air floatation equipment and a control method, which aim to solve the technical problems that the existing air floatation equipment relies on air bubble floatation to realize oil-water separation, so that the coalescing capacity of tiny oil drops is insufficient, the equipment separation efficiency is low, the equipment size is large and the processing capacity is limited. The first object of the application is to provide an air floatation device, which adopts the following technical scheme: The utility model provides an air supporting equipment, including a jar body and drainage structure, the jar body is equipped with the chamber that holds, the drainage structure sets up in holding the chamber, the jar body is equipped with the carrier gas entry, the inlet, the aqueous phase export and organic phase overflow mouth, the carrier gas entry sets up in the top of jar body, the aqueous phase export sets up in the below of drainage structure, the organic phase overflow mouth sets up in the top of drainage structure, the drainage structure is equipped with guide channel, guide channel's upside and downside are open structure, guide channel's one end is adjacent the inlet, the other end extends along the central region of spiral path orientation jar body, with the liquid that the guide got into the chamber forms the swirl field, organic phase in the liquid come-up separation and discharge through organic phase overflow mouth under the action of swirl field, and part organic phase is attached to guide channel's inner wall, the aqueous phase after the separation is discharged through the aqueous phase export. The air floatation device in the first object of the present application further includes the following additional technical features: the drainage structure is the heliciform setting in order to form the guide channel, and the inlet sets up in the lateral wall of jar body, and the starting end of guide channel is located the play liquid route of inlet, and the drainage structure has the link of being connected with the inner wall of jar body, and the drainage structure is tangent the setting with the inner wall of jar body in the lateral surface of link department to make the liquid that gets into the holding chamber follow the drainage structure spiral flow. The air floatation device further comprises a cleaning device, the drainage structure extends along the axial direction of the tank body, the cleaning device comprises a cleaning scraping plate, the cleaning scraping plate is arranged on the inner wall of one side, close to the center of the rotational flow, of the guide channel, and the cleaning scraping plate is arranged in a moving mode relative to the drainage structure so as to clean organic phases attached to the guide channel. The cleaning device further comprises a driving piece, the cleaning scraping plates are arranged along the axial direction of the guide channel, an output shaft of the driving piece is connected with the cleaning scraping plates, and the driving piece drives the cleaning scraping plates to move along the axial direction of the tank body. The cleaning device further includes a mou