Hubei Wan'an Environmental Protection - Oil Mixing Rotating Nozzle

1. Overview

The main methods of oil blending are pipeline blending and pump circulation tank blending. Tank blending has the advantages of low oil turnover times, convenient batch blending, simple blending equipment, low investment, and easy implementation. It is still the preferred blending method for most refining enterprises. At present, the main ways of mixing in the tank are: mixer mixing and nozzle mixing. Mechanical stirring and blending are mainly used for solvent blending with small batch sizes and strict proportion control requirements. Due to the rotation of the solution in the direction of the helical slurry in the tank, the solution is stirred up and down, forming a vortex flow that causes significant damage to the floating disc inside the oil tank. Therefore, it is only suitable for oil blending in dome shaped tanks. The automatic rotating nozzle of the application has simple equipment, easy operation, low investment, and convenient management. It has the advantages of reducing pump cycle time, saving energy, and reducing evaporation losses, and has been widely used in the petrochemical industry in recent years.

The oil tank oil blending rotary nozzle (oil blending rotary nozzle) has all the functions of a rotary nozzle, and further develops the function of blending in place. The characteristic of the adjustable rotary nozzle is that when the liquid level in the tank changes, its nozzle can automatically adjust the spray angle with the rise and fall of the liquid level, always adjusting below the liquid level, greatly reducing the amount of oil and gas evaporation, reducing the adjustment time, lowering energy consumption, facilitating production, and flexible scheduling. Compared with ordinary rotary nozzles, it has more obvious advantages in adjustment. Therefore, the oil tank oil blending rotating nozzle provides a safer and more reliable energy-saving and potential tapping production method for refining enterprises.

2. Principle of oil blending rotary nozzle (oil blending rotary nozzle)

The oil tank oil blending rotating nozzle (oil blending rotating nozzle) is installed eccentrically, generating torque to drive the entire rotating nozzle to rotate uniformly and spray blending evenly along the circumference. When the liquid level changes from high to low, the airbag on the rotating nozzle gradually increases in pressure, causing the air volume in the airbag to be compressed and deformed, driving the movement of the lever position. Under the traction of the lever, the nozzle angle changes with the liquid level, always keeping the nozzle spray liquid column below the liquid level, which is conducive to reducing oil and gas evaporation, shortening the mixing time, improving work efficiency, and saving energy and consumption.

The characteristic of the oil blending rotary nozzle for oil tanks is that the change in liquid level drives the nozzle to change the spray angle. Due to the variability of nozzle angles, the rotating nozzle is more flexible for blending oil products in different specifications of oil tanks.

3. Composition of oil blending rotary nozzle for oil tank:

The blending rotary nozzle (oil mixer) consists of a nozzle, manifold, rotary head, airbag, lever, flange, bolt, etc. The material is 20 #, Q235 or stainless steel, and the rotary head is made of aluminum alloy or stainless steel.

The manufacturing dimensions of the tank oil injector are designed based on parameters such as tank specifications, oil types, and the flow rate of the blending pump, and the structural length and angle are determined.

 Oil blending rotary nozzle in tank (oil blending rotary nozzle) video URL:

https://v.youku.com/v_show/id_XMTM1NjE5NTEyNA==.html

https://v.youku.com/v_show/id_XMTM1NjE5NDk4OA==.html

4. Analysis of blending benefits

According to the test, several blending methods are used for blending

Comparison Table of One Ton Oil Costs:

Because the rotating nozzle can be adjusted at lower liquid levels, it can save at least one-third of the time, thus reducing the cost of adjusting multiple nozzles by one-third. 

5. Product specifications and selection

WAXP-5000-WU-2 (ZD) WA - Wan'an Company XP - Rotating Nozzle;

5000- represents the nominal volume of the blending oil tank; WU - adaptive adjustment; Optional. ZD - with assisted nozzle; Optional.

2- Dual nozzle. Optional.

In order to achieve the ideal oil blending effect, in addition to meeting the inlet pipe diameter, pump flow rate, and head, it is also necessary to pay attention to the selection:

6. Installation instructions:

 1. The blending pipeline extends to the center of the oil tank and is connected to the rotating nozzle with a flange.

2. For inner floating roof tanks, attention should be paid to avoiding the support legs of the floating plate, and installation can be offset appropriately.

3. It is recommended to install the float in the direction of injection to reduce the stress surface when using a float shaped inner float.

4. Although the rotary spray device is always in liquid phase, it is recommended to follow the WH3007 "Design Specification for Petrochemical Storage and Transportation Tank Areas" when conditions permit. The oil tank inlet pipe and blending pipe should be separated as much as possible to avoid sharing the oil inlet and blending line.