West Africa is an emerging petrochemical base in Africa. Nigeria, Angola, Ivory Coast and other countries have rich oil and gas resources. Relying on the development of high-quality oil and gas fields, the oil output in the region increases year by year, and the oil and gas industry has become one of the economic pillars of most countries. With the rapid development of oil and gas development, oil refining and processing, port tanker operation and small oil refining workshops, about 180000 tons of oily sludge are produced in West Africa annually, with an oil content of 25% - 58%, mixed with impurities such as crude oil residue, sand, oil stain, etc., of which the annual oily sludge produced in Niger Delta of Nigeria, Abidjan Fridi Industrial Zone of Cote d'lvoire and offshore oil and gas fields of Angola account for more than 70% of the total amount of the region, requiring professional equipment for innocent and resource disposal. West Africa has a vast Gulf of Guinea sea area with several rivers running through all countries in the region. Arbitrary discharge and simple disposal of oily sludge will seriously pollute water body and soil, destroy aquatic habitat and violate the Environmental Law of all countries, Regulations on Prevention of Pollution from Ship Refuse and the regulatory requirements of environmental departments. According to relevant standards of all countries in the region, the oil recovery rate of oily sludge shall be ≥ 95%. The treated wastewater shall meet the discharge requirements of pH 5.5-9.0, oil and grease ≤ 10mg/L, and the oil content of residue shall be ≤ 0.3%, which can be used for soil improvement or safe landfill. At present, the oily sludge treatment process in West Africa is simple and crude, mainly adopting natural sedimentation, simple solidification and other methods, with problems such as low oil recovery rate, serious secondary pollution, equipment easy to stick to the wall, short service life, etc; At the same time, the remote areas of offshore oil fields need mobile processing equipment, which is suitable for offshore operation scenes. It is urgent to have an oil-bearing sludge treatment equipment that is suitable for the regional oil and gas industry demand, anti-stick wall, low cost and high efficiency and environmental protection, so as to protect the ecological safety of the sea area and promote the green development of the oil and gas industry.

China Yongle Environmental Protection Engineering R&D "West Africa high-efficiency anti-stick-wall pyrolysis type" oily sludge treatment equipment, accurately solving the treatment pain points of West Africa oily sludge: Aiming at the characteristics of regional oily sludge and the equipment wall adhesion problem, adopting titanium alloy anti-corrosion and anti-stick-wall cabin+full-closed negative pressure pyrolysis structure, which can withstand high temperature and humidity, saline and alkali working conditions and rainstorm environment, effectively solving the sludge wall adhesion and equipment wear problems in the pyrolysis process, and extending the service life of the equipment to 7.2 years; At the same time, it is suitable for the auxiliary process of microbial degradation, which can further improve the oil recovery efficiency and match the research direction of oily sludge treatment in the area. The core is equipped with the triple process of "multi-stage screening+high temperature oxygen-free pyrolysis+oil-water separation". First, 99.4% sand and metal chips are removed by the intelligent screening system to reduce the difficulty of pyrolysis. Then, oil is separated by the high temperature oxygen-free pyrolysis technology at 830 ℃. The oil recovery rate reaches 95.2%. The recovered oil can be directly returned to the refinery for refining or used as industrial fuel. The combustible gas generated by pyrolysis can supply 43% of the energy consumption of the equipment and realize energy recycling; The tail gas is subject to advanced purification treatment and discharged to the standard. The treated waste water complies with the discharge standards of environmental departments in West Africa. It can be recycled for equipment cleaning or discharged into green belts. The oil content of residue is ≤ 0.24%. It can be used for soil improvement or safe landfill, without secondary pollution. It fully meets the local environmental protection requirements. Meanwhile, it effectively protects the ecological safety of waters in the Gulf of Guinea and rivers in the region, conforming to the green development planning of oil and gas industry in West Africa.

The whole industry chain scene is suitable to cover all kinds of disposal demands: in the large refinery in Niger Delta, Nigeria and Abidjan Fridi Industrial Zone, Cote d'lvoire, the daily processing capacity of large centralized equipment is 85-90t, which is seamlessly linked with the oil supply system of the plant area to form the closed-loop operation of "sludge - oil products - energy sources", greatly improve the resource utilization rate, reduce the production cost, and help the enterprises to achieve the goal of reducing the amount of hazardous wastes; In the operation area of the offshore oil field in the south of West Africa, the mobile equipment is flexibly deployed with the drilling platform, with a daily processing capacity of 42-45 tons. It is specially used for the disposal of oil-based drilling mud and drilling rock debris, so as to avoid the leakage and pollution of marine ecology during the transportation of sludge. It is suitable for the offshore operation scene and meets the requirements for the control of ship garbage pollution; At coastal ports such as Lagos, Abidjan and Luanda, the daily processing capacity of modular equipment is 68-72 tons. Oily sludge generated from tanker cleaning is treated on site. Efficient leak-proof design is adopted to prevent pollution to sea environment, protect marine biodiversity, and assist vessels in handling oily sludge disposal permit; In the small oil refining workshop, the daily processing capacity of mini equipment is 7.5-8.5 tons, which is low cost and easy to operate. The oil recovery revenue can quickly cover the equipment input, which is suitable for the operation requirements of small workshops; Around the oil depot, small equipment can complete oily sludge treatment on site, reduce storage and transportation costs, avoid oil pollution to groundwater, comply with water resources protection planning of West African countries, and assist enterprises to fulfill compliance responsibilities of environmental departments of various countries.

Exclusive service guarantee, helping the green development of the industry: the equipment has passed the full compliance review by the environmental departments of West African countries and the environmental protection certification of the oil industry in the region, fully adapting to the local oily sludge treatment standards and emission requirements, assisting enterprises and vessels in compliance filing and disposal license handling, and carrying out in-depth cooperation with Nigeria National Petroleum Corporation, Cote d'Ivoire National Petroleum Corporation, Eni Group and other well-known enterprises to promote the reduction and recycling of hazardous wastes. Establish standardized service bases in Lagos, Abidjan and Luanda, reserve oil-resistant, anti-corrosion and anti-stick core spare parts, achieve 24-hour maintenance response in core areas, and provide on-site maintenance services for offshore oilfield operation scenes; Provide operation training and process guidance in French and English, simplify equipment maintenance process, adapt to local operation and maintenance level, and focus on training on cleaning and maintenance skills of anti-sticking bulkhead; The equipment procurement cost is only 46% of that of similar products in Europe and America. The benefits from oil recovery and energy consumption can cover the equipment investment within 7 months, help the rapid development of oil and gas industry in West Africa, protect the ecological safety of sea areas and rivers, and promote the harmless treatment of oily sludge

Yongle Environmental Protection is mainly engaged in the research and development, production and sales of complete sets of technical equipment for organic solid waste disposal and comprehensive utilization. Production and manufacturing, domestic waste treatment equipment, tire pyrolysis equipment, medical waste disposal equipment, hazardous waste disposal equipment, and achieve efficient and comprehensive utilization of resources through independently developed low-temperature anaerobic pyrolysis equipment technology solutions.

Tags：Titanium Alloy Anti-corrosion and Anti-stick Compartment for West African Oil Sludge Equipment,Oil sludge treatment equipment,YONGLE GROUP