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Case Study: Custom Explosion-Proof Solvent Recovery System for Automotive Parts Manufacturer

Published by Chongqing JBETT Environmental Protection Technology Co., Ltd

1. Client Factory & Workshop Background

(1)This client is a professional automotive component manufacturer, producing plastic & metal auto spare parts with complete coating, spraying and parts cleaning workflows.

(2)Core waste liquid source: Paint thinner, gun cleaning solvent and industrial degreaser generated during component spraying & post-processing cleaning.

(3)Waste composition characteristics: Waste solvent mixed with metal filings, paint sludge, resin residues, which easily carbonize, stick and scale on the inner tank during high-temperature distillation.

Long-term workshop environment pain point: The local region suffers extremely long hot summers, with steady ambient temperature ranging from 35℃ to 45℃ all day long. High ambient temperature leads to insufficient condensation effect of standard air-cooled recyclers, low solvent recovery rate and unstable machine running safety.

2. Client’s Core Requirements & Expected Outcomes

Before cooperation, the factory faced three major production bottlenecks and put forward clear demands for solvent recycling equipment:
(1)Guarantee stable & safe operation under ultra-high workshop temperature

Replace air-cooled models with cooling system that maintains constant low temperature, avoid overheating shutdown, maximize solvent recovery efficiency.

(2)Simple operation & labor-saving workflow for frontline workers

Abandon manual heavy barrel pouring of waste solvent, reduce labor intensity and prevent skin splashing contact with hazardous waste liquid.

(3)Long service life of equipment, low daily maintenance workload
Block metal chips and paint sludge from direct contact with distillation tank; simplify residue cleaning work, cut down frequent tank scrubbing and machine maintenance frequency.

(4)Full explosion-proof protection to meet auto coating safety standards
Eliminate fire risks caused by flammable waste solvent, comply with local environmental & work safety regulations for automotive manufacturing plants.

3.1 Water-cooled Explosion-proof Solvent Recovery Unit + 2HP Industrial Chiller

(1) The 2HP chiller provides stable and constant low-temperature circulating cooling water. Even in high-temperature environments of 35–45℃, it maintains excellent condensation performance, ensuring the steam condensation effect, ensuring the continuous and safe operation of the solvent recovery equipment, and improving the solvent recovery rate.

(2) Semi-automatic Pumping Component

Completely replaces manual dumping of waste solvent. Operators only need to connect the pump pipe to the waste liquid tank and start the pump to feed; the equipment will automatically transport the waste liquid to the distillation tank. There is no need to carry heavy waste liquid tanks, greatly reducing the manual burden and lowering the risk of direct contact with hazardous solvents.

(3) High-Temperature Resistant Filter Recovery Bag

A disposable high-temperature resistant residue liner bag specially developed for the distillation operation of the explosion-proof solvent recovery machine, suitable for the distillation and recovery of various waste solvents in the coating, 3D printing, semiconductor, and chemical cleaning industries. During the distillation process, all solid impurities are trapped inside the high-temperature resistant filter bag, preventing carbides from adhering to the stainless steel tank wall. After each recycling batch, workers only need to remove the filter bag to handle the residue, eliminating the need for frequent cleaning of the tank interior, effectively protecting the main unit and extending its service life.

(4) Vacuum Negative Pressure Storage Unit Provides negative pressure for the recycling environment, making recycling safer. It can temporarily store the recovered clean solvent, reducing evaporation and solvent waste; when used with the main unit, it improves the equipment's recycling efficiency.

4. On-site Delivery, Installation, and Training Process (June On-site Records)

All JBETT solvent recovery main units were pre-assembled and debugged at the factory before shipment, greatly shortening the customer's on-site construction time.

In June, our professional technical team completed a one-stop service in the customer's workshop:

1. Unloading and planning the equipment layout using a forklift;

2. Assembling all supporting optional accessories, pipe connections, and power wiring;

3. Conducting trial distillation tests using the customer's actual waste paint cleaning solvent;

4. Providing systematic operation training to factory production personnel, covering pump feeding operation, startup procedures, parameter adjustment, observation of working conditions through the viewing window, residue handling, daily maintenance, and complete explosion-proof safety operating procedures.