Stripping Pump in Dubai is one of the types of pumps available in Marine Land Company, which is offered in two different types in the shipping equipment market. The body of one of these stripping pumps is made of cast iron and the other model has a steel body. These pumps are centrifugal pumps. By using Stripping Pump in UAE, the speed of water circulation increases and the residue of the tank is also emptied. The advantage of using Stripping Pump in Dubai is that the cargo is completely delivered to the customer and nothing remains inside the tank.
Why do we use Stripping Pump in Dubai?
In most cases, the main pumps are not able to completely empty the water tanks. Therefore, to do this, a separate pump is needed so that you can drain the remaining liquid from the tank. This submersible pump should have good priming capability and low NPSHr.
There are mainly two different types of Stripping Pump in UAE.
1. Horizontal self-priming pump
2. Internal self-priming pump
These two types of pumps are used to empty ship tanks. Another type of pump is the water-driven ejector pump (marine ejector pump). A marine ejector requires water flow from a fire pump or a utility pump, but has no moving parts. Both of these stripping pumps in Dubai meet the requirements for ballast tank isolation.
Application of stripping system to empty tanks
The stripping system is an auxiliary device on oil pumps that enables the continuous unloading of oil from tankers until the end of the unloading operation without any manual intervention. The purpose of the stripping system is to prevent flow interruption by gas intrusion into the suction pipe, such as occurs during residual discharge pump operation.
Separation of cargo tanks is done to ensure unloading as much cargo as possible. Usually the ship uses pumps and lines for this purpose because they reach every last drop of cargo that bulk discharge pumps cannot reach. Stripping is an integral part of unloading and if it is not done correctly, the cargo will not be fully delivered to the customer.
Normally, the stripping system discharges the ship's tanks in a certain order. As soon as the first tanks are empty, the separation process begins. At the time when the ship is unloading the bulk of the remaining tanks, the withdrawal can be done, and when the next tanks are empty, the unloading of those tanks will begin. It is only at the end of the bulk discharge that there is a period of time when the ship is just discharging. The bulk discharge has been completed but the last two or three tanks to be discharged have not yet been discharged and must be discharged now. Obviously, since there is no bulk discharge, it is impossible for the vessel to meet the reverse pressure required under the charter, say 100psi, and this is where we find the need for Stripping Pump in Dubai.
Using educrors to perform the stripping process
As you know, the eductors are used to empty the residual contents into the opposite reservoirs. Ballast tanks usually consist of a labyrinth of chambers with openings and channels that allow water to enter all parts of the tank during ballasting and drain to the pump suction during ballast discharge.
During tank discharge, the flow of ballast water into the suction pipe can be restricted by the underlying structure. As a result, the main ballast pump often loses suction before all the water has been removed.
To further drain the remaining ballast water, a process called "stripping" may be performed using an eductor. To do this, they use high-pressure seawater to create a vacuum that is applied to the ballast pipes and the suction point in the ballast tank. Eductors may affect the proper operation of a BWMS that uses chemical additives. It treats the ship's ballast water with a disinfectant compound and has a control mechanism to apply a neutralizing compound to condition the discharged ballast for environmental acceptability.
This control function consists of a sensor for Total Residual Oxidants (TROs) installed in the discharge line and controlling a unit that injects a chemical neutralizer into the outgoing ballast water to reduce the oxidant content to a tolerable level. to give
The discharge of an eductor will be a mixture of local harbor water and that from the ship's ballast tanks. The important feature of this water is that it is highly aerated and often changes color with tank sediment. However, doing so may affect the sensor's ability to function properly and result in incomplete neutralization of the disinfected water.
Types of stripping pumps to empty the remaining tanks
I-b. Centrifugal CLHB Pump
Qmax to 700m3/h, Hmax to 150m, Inline type, optional for spacer coupling.
I-c. Centrifugal CISG Pump
Qmax to 160m3/h, Hmax to 125m, Inline, closed coupling (mono type).
II-a. Centrifugal CIS Pump
Qmax to 450m3/h, Hmax to 120m, end-suction, coupling type.
II-b. Self-priming Centrifugal CWZ Pump
Qmax to 100m3/h, Hmax to 75m, self-priming, coupling type.
II-c. Self-priming Centrifugal CYZ Pump
Qmax to 500m3/h, Hmax to 80m, end-suction, oil and FW cargo pump.
II-e. Self-priming Centrifugal CBZ Pump
Qmax to 200m3/h, Hmax to 80m, closed coupling type for CWZ pump.
IV-a CPT&CPJ Marine Ejector Pump
Qmax to 600m3/h, ejctor, inline type(CPJ) and vertical type(CPT).
IV-b. Centrifugal CQX Submersible Pump
Qmax to 500m3/h, Hmax to 40m, submersible sewage centrifugal.