A dry bulk handling system on order for a new design of platform supply vessel incorporates numerous features that improve efficiency, in terms of space usage, energy consumption, and the level of automation integrated into the vessel’s central cargo control system.
The Ruyter Offshore’s equipment has been delivered to multiple offshore related applications, such as PSV’s, AHTS, Drill Ships, Jack-up Rigs, Semi-submersible rigs and many more.
According to Lion Bulk Handling’s Chairman, Cor de Kwant, most of our bulk handling systems delivered on offshore related vessels are four (4) to up to ten (10) dry bulk tanks, with discharge rates up to 100 cu m/hr. A dust collection method prevents the escape of dust from the vent lines into the environment.
The compressor system includes refrigerated air dryers to prevent humidity problems that could impact the quality of the dry bulk material. The compressors are frequency controlled, allowing a slow start and enabling substantial savings to be made on energy consumption.
Space, steel savings
The company’s pioneering advances in dry bulk handling could benefit a wider range of supply ships, de Kwant believes. “It’s surprising the offshore industry still uses pressure tanks, considering the amount of space they occupy,” he says. A supply ship with pressure tanks effectively uses only one third of the gross volume occupied by the whole installation for the actual net cargo.
Drawing on to Lion Bulk Handling’s experience (together with its well-known worldwide brands such as Carlsen, Kintec, Bulk Academy, Kovako and Ruyter Offshore) as a specialist in self-discharging systems for cement carriers, de Kwant suggests that net cargo volume could be doubled through the use of its vacuum/pressure system or “Double Re-Loader System”. This involves a fluidized floor in the hold which enables the dry bulk material to be fluidized by blowing air underneath it. The floor is angled so that the fluidized material flows towards a central point where it is picked up by the pneumatic or mechanical conveying system.
Lion Bulk Handling has extended its thinking to semisubmersible rigs, where the pressure tanks used for storing, for example, barite, bentonite, and cement could be replaced by silo-bins incorporated in the steel structure, in one of the columns. From there, the material could be discharged via small-size sender tanks directly to the surge tanks and mud mixer. For a typical drilling rig, in addition to the space saving, this would allow a substantial amount of steel to be saved in the rig construction, de Kwant claims.
The proposal has interested several owners, and the company is negotiating to supply such a system to a newbuild rig project.
Contact us for more information at www.lionbulkhandling.com/contact