How to choose a sled mounted oil and gas recovery equipment for dock oil depots? Direct answer: First, look at three hard constraints - peak handling capacity during loading and unloading, site and connection conditions, explosion-proof and safety levels, and then check whether the process is suitable for the high salt and high humidity corrosive environment of the dock. The advantage of the sled mounted system is that it integrates condensation, adsorption, or membrane methods onto a single base, which can be connected to pipelines upon arrival. It is suitable for scenarios such as docks where the site is tight and the construction period is short. Judging criteria based on throughput and interface: For those with multiple berths and large single ship loading and unloading volumes, the processing capacity should be selected according to the peak value and buffering should be provided; The interface does not match the existing crane pipe and gas phase pipeline, and it cannot be connected even if it saves space. This article clarifies the key points of selection and configuration.
The characteristics of dock oil depots are centralized loading and unloading, large single batch gas volume, and operation windows constrained by shipping schedules. Traditional split type equipment has long construction and piping cycles, which cannot keep up with the pace of berth renovation. The internal piping and electrical system of the sled mounted equipment are completed before leaving the factory, and only external interfaces and foundations are made on site, resulting in a significantly short installation cycle; The overall positioning of the base is also convenient for later migration or expansion, and flexible for berth adjustment. The cost is that the processing capacity of a single unit is constrained by the size of the base, and for ultra large scales, parallel or multiple units need to be arranged. When selecting, the peak value should be calculated accurately.
The site should have sufficient space for equipment occupation, maintenance access, and safety distance: there should be operating space for valves and instruments around the sled body, and no wall or tank placement is allowed; The foundation shall bear the full load weight of the equipment, and the settlement of the coastal soft foundation shall be verified. Pre check the connection conditions: the gas phase return pipe, liquid phase recovery inlet, power supply and control system interface position should be aligned with the existing crane pipe and gas phase balance pipe at the dock. Misalignment will result in a large amount of rework on site. Lightning protection and anti-static grounding should be in accordance with the requirements of explosion hazardous areas. The dock has many metal structures, and the grounding network should be connected.
The process is determined by the medium and concentration: the terminal mainly uses gasoline and diesel, and high concentration continuous discharge is suitable for condensation and adsorption or condensation and film, and the recovered liquid is directly reused; Low concentration with large fluctuations in adsorption provides a bottom line. Corrosion environment is the key - high salt spray and high humidity quickly corrode ordinary carbon steel. The material is adjusted according to the marine environment, and corrosion-resistant grades are selected for seals and heat exchangers. Electrical components are selected according to outdoor protection levels. Ventilation and fire protection are configured according to hazardous material locations, and leakage monitoring and interlocking inside the sled cannot be omitted.
The safety level is divided by region: the dock belongs to an explosive hazardous environment, and the explosion-proof signs, gas groups, and temperature groups of the equipment should cover the medium of this station; Interlocking protection includes overpressure, leakage, and shutdown linkage to avoid single point failure. On the operation and maintenance side, the sled mounted equipment and instruments are centralized, and periodic inspections are more convenient than scattered equipment. However, spare parts should be prepared according to the model inside the sled, and do not wait until the machine is shut down to find them. Before production, conduct overall debugging and airtightness to confirm that there are no leaks in the interface before putting it into operation.
| Selection item | Focus point | Attention to the dock | error-prone points |
|---|---|---|---|
| processing capacity | Select by peak value | Large single ship loading and unloading volume | On average, it is relatively small |
| venue | maintenance access | Stick cans and walls | Insufficient basic bearing capacity |
| interface | Gas phase liquid phase electricity | Align with the crane tube | On site rework |
| Material | Salt spray resistance | High humidity and high corrosion | Ordinary carbon steel rust |
| Explosion-proof | Group temperature | Explosion hazard zone | Mismatched buried hidden dangers |
| Operations and Maintenance (O&M) | Spare parts and instruments | Centralized inspection | Missing model spare parts |
Selecting the positive solution with margin based on peak value; If it is already too small, let's see if we can connect a second one in parallel or make the buffer tank bigger to reduce peak load. Don't rely on exceeding the design load to run it hard, as the collection rate and compliance cannot be guaranteed when it exceeds the limit.
The material grade is upgraded according to the marine environment, corrosion-resistant grades are selected for seals and heat exchangers, and outdoor protection grades are used for electrical protection; Ordinary carbon steel rusts quickly at the dock, saving material costs and replacing it with frequent maintenance accounts.
Choose sled installation for tight site, short construction period, and possible relocation in the later stage; The separation body with a large processing capacity and complex process has better scalability but a long construction period, which is determined according to the pace of the dock.
This article by LuoyangWohong PetrochemicalEquipment Co., Ltd. arranges that the company provides design, manufacturing and operation and maintenance services for condensation recovery, membrane separation recovery and complete solvent recovery devices for chemical and pharmaceutical enterprises. If you need process evaluation or scheme configuration, please contact and exchange.
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