Ningbo Tenzon Umwelttechnik Co., Ltd ，High-efficiency energy-saving core processing equipment

Client Name: A Chemical Technology Co., Ltd. based in Ningbo

Products & Application Scenarios: Oil storage tanks and a multi-stage cryogenic oil-gas recovery and fuel-feed purification unit (serving both tank farms and loading/unloading facilities)

Cooperation Period & Project Duration: July 2022 – October 2024; 120 days

Client Background and Requirements:

The client is a modern manufacturing enterprise specializing in the R&D, production, and sales of specialty oil products. It is located within the Ningbo Petrochemical Economic and Technological Development Zone in Zhejiang Province—a national-level chemical industrial park. Established in 2005, the company has grown over the past decade to achieve an annual comprehensive processing capacity of nearly one million tons. Its main product lines include heavy aromatic derivatives, white oils, base oils, textile processing oils, rubber plasticizers, and asphalt. These products are primarily used in sectors such as rubber processing, asphalt processing, lubricant manufacturing, food-grade and cosmetic-grade white oils, textiles, and energy storage materials.

Client Requirements: A single oil-gas recovery unit is required to serve a combined system comprising light white oil/crude white oil tank farms and loading/unloading facilities. The light oil tank farm consists of two light white oil internal floating-roof tanks, two industrial white oil internal floating-roof tanks, one start-up oil internal floating-roof tank, and one light-fraction slop oil internal floating-roof tank. The processing capacity for the eco-friendly aromatic oil loading bay is 400 Nm³/h. The design and manufacture of the oil-gas recovery unit must fully account for the properties of the oil and gas, actual operating conditions, and local climatic and environmental factors. Emissions from the unit—following oil-gas recovery and fuel-feed processing—must comply with the relevant requirements of the *Emission Standard of Pollutants for Petroleum Refining Industry* (GB31570-2015).

Service Process & Why Choose Us:

Based on on-site surveys and technical consultations, our technical team develops a solution that comprehensively balances purification efficiency, safety, reliability, initial investment, and operational cost-effectiveness. The process employs staged cooling for the oil and gas vapors; once the temperature drops to between -65°C and -75°C, the majority of the vapors condense into liquid oil for recovery. The remaining vapors are then sent to an incinerator to ensure emissions meet safety standards. Ultimately, the concentration of non-methane hydrocarbons (NMHC) in the exhaust air complies with the requirements of the *Emission Standard of Pollutants for Petrochemical Industry* (GB31571-2015) and the *Emission Standard of Pollutants for Petroleum Refining Industry* (GB31570-2015).

During the design of the oil and gas treatment system, we utilize mature, safe, and advanced technologies alongside high-performance, reliable, and energy-efficient waste gas treatment equipment to prevent secondary pollution.

Our Advantages:

• Strict adherence to relevant national and local environmental regulations and emission standards, ensuring that all parameters of the treated exhaust air meet or exceed these standards.

• Utilization of advanced, sound, proven, and reliable treatment processes that deliver significant environmental, social, and economic benefits.

• Process design and equipment selection offer substantial operational flexibility and adjustability, guaranteeing compliance with emission standards during production.

• Purification equipment designed for ease of operation, management, and maintenance, while minimizing energy consumption and operating costs.

Customer Feedback:

• Advanced and reliable technology, mature and proven processes, and high treatment efficiency.

• Waste gas treatment process featuring low operating costs and ease of operation and management.

• Equipped with an automated control system to facilitate operation, management, and maintenance.

• Spare parts are reasonably priced and offer a long service life.

Case Study Images:

The Tenzon technical team provides reliable, safe, and accurate technical consulting services for industrial dust collector and waste gas treatment. We offer tailored solutions to meet the diverse needs of various industries, helping clients select the right purification and low-carbon equipment to achieve optimal environmental outcomes.