Shangqiu Aotewei Environmental Protection Equipment Co., Ltd. is one of the leading manufacturers and suppliers of double distillation plant in China. We are committed to providing high quality customized products with competitive price. If you're going to buy ISO certified double distillation plant, welcome to get quotation from our factory.
Product Name
Double Distillation Plant. It is a complete skid-mounted two-stage series distillation and refining system developed for deep purification and refinement of high-boiling-point and hard-to-separate materials. Adopting the serial process of primary rough distillation plus secondary rectification, it integrates dual distillation kettles, multi-stage condensation system, vacuum pressure-stabilizing unit, automatic liquid-replenishing module, tail-gas purification device and intelligent control system. It realizes continuous and high-purity separation of materials, and provides stable and reliable industrial solutions for oil product refining, chemical raw-material purification and hazardous-waste resource-oriented treatment. Reference investment: Starting from USD 500,000.
| Technical Parameter of the Pyrolysis plant | |||
| 1 | Suitable Raw Materials | Waste Engine Oil, Fuel Oil, Crude Oil | Waste Engine Oil, Fuel Oil, Crude Oil |
| 2 | Structure | Horizontal Rotation Type | Horizontal Rotation Type |
| 3 | Reactor Size | φ2600×6600mm φ2800×8000mm φ3000×8800mm |
φ1500×2000mm φ1800×4000mm φ2000×600mm |
| 4 | Work Pressure | Normal Pressure | Normal Pressure |
| 5 | Oil Yield | 85%~95% | 85%~95% |
| 6 | Work Pressure | Normal Pressure | Normal Pressure |
| 7 | Power | 15-25kw/H | 15-25kw/H |
| 8 | Heating Method | Indirect Heating | Indirect Heating |
| 9 | Type of Installation | Without Foundation | Without Foundation |
| 10 | Cooling Method | Cycling Water | Cycling Water |
| 11 | Noise dB (A) | ≤ 85 | ≤ 85 |
| 12 | Cooling Method | Cycling Water | Cycling Water |
| 13 | End Product | Non-standard Diesel Oil | Non-standard Diesel Oil |
| 14 | Manpower | 4-6/shift | 2-4/shift |
Features
Two-stage series precise separation design:
Adopt a dual-kettle serial structure of primary rough distillation and secondary rectification. The first stage completes preliminary separation of light and heavy components of materials, while the second stage carries out deep rectification and purification for rough-distilled products. It achieves accurate separation of components with extremely small boiling-point differences, raising single-run rectification purity to over 85%, far exceeding the separation accuracy of single-stage distillation equipment.
Independent temperature & pressure control for separate kettles:
The two distillation kettles of the Double Distillation Plant are equipped with independent temperature and pressure control modules. Different distillation temperature and vacuum parameters can be set respectively to meet separation requirements for different components of one single material. It also supports simultaneous distillation of two different materials, realizing both rough distillation and rectification with one unit.
Multi-stage condensation and closed-loop reflux design:
Equipped with a three-stage condensation unit. The first-stage condenser recovers heavy-duty components, the second-stage recovers medium-duty components, and the third-stage recovers light-duty components. Meanwhile, an adjustable reflux-ratio control system is configured to flexibly adjust reflux volume according to product-purity requirements, reducing loss of effective components and improving product yield.
Skid-mounted modular integrated structure:
Core equipment, pipelines, valves and control system are all pre-integrated onto a standard skid base. The monolithic structure requires no complex foundation. After delivery, it can be quickly put into production simply by connecting utility works. The whole skid can be hoisted and relocated, suitable for various deployment scenarios such as factory workshops, laboratories and mobile processing stations.
Closed negative-pressure environmental-friendly design:
The whole process runs in closed mode with the system kept under slight negative pressure to avoid leakage of volatile substances. A tail-gas purification system is furnished to conduct desulfurization, deodorization and combustion treatment for non-condensable gas generated during distillation. Tail-gas emissions comply with national environmental-protection standards with no secondary pollution.
Advantage
High separation accuracy with excellent product quality:
The two-stage serial rectification process of the Double Distillation Plant delivers high-precision separation unachievable by single-stage distillation. For materials such as waste engine oil, tire-derived oil and crude oil, it directly outputs national-standard diesel and gasoline fractions without subsequent secondary refining, greatly increasing added value of finished products.
Multi-purpose unit with strong compatibility: One single set of equipment is applicable to distillation and purification of dozens of materials including waste mineral oil, crude oil, tire pyrolysis oil, plastic pyrolysis oil, mixed chemical solvents and vegetable oils. It flexibly switches among atmospheric-pressure, negative-pressure, continuous and batch operating modes. No core component replacement is needed; only process-parameter adjustment is required to adapt to different feedstock processing demands.
Lower energy consumption with controllable operating costs:
The waste-heat recovery system boosts the energy-utilization ratio in production by more than 30%. Combined with precise temperature control to eliminate invalid heating, it cuts unit-material processing energy consumption by 20%-30% compared with conventional single-stage distillation units, bringing remarkable long-term economic benefits.
Continuous production with high processing efficiency: It supports stable 24-hour continuous operation with daily throughput ranging from 5 to 50 tons. Compared with batch distillation equipment, single-batch cycle time is shortened by 40% and material throughput per unit time is greatly improved, satisfying demands for large-scale industrial production.
Easy-to-maintain and long service life:
Thanks to the modular design, each unit can be disassembled and repaired independently. The anti-coking structure greatly reduces internal cleaning frequency. Core pressure vessels are fabricated from Q345R pressure-resistant steel plate with automatic submerged-arc welding and ultrasonic non-destructive testing. The designed service life of the equipment exceeds 15 years.
Environment-compliant with zero secondary pollution: Operating in fully closed status, it is furnished with complete treatment solutions for tail gas, wastewater and residues. Discharge of tail gas and disposal of residual liquid meet national environmental-protection requirements to pass environmental-protection acceptance, adapting to stringent domestic and overseas environmental-regulation scenarios.
High return on investment with short payback period:
Compared with traditional large-scale rectification towers, the skid-mounted double distillation plant features lower investment cost and shorter deployment cycle. Revenue can be generated right after commissioning. For waste-oil resource-recovery projects, equipment investment can be recovered within 6-12 months under normal operation with outstanding economic returns.
High customizability for personalized requirements: Distillation-kettle dimensions, condensation-system configuration and control schemes can be custom-designed according to customers' feedstock properties, throughput and product specifications. Auxiliary units including feed pre-treatment, product refining and residual-liquid treatment can also be matched to deliver one-stop customized solutions.
Application Scenarios
- Resource recycling of waste mineral oil: Perform two-stage distillation refining on waste mineral oil such as waste engine oil, waste lubricating oil, hydraulic oil and gear oil to produce national-standard diesel, gasoline and base-oil products, realizing resource-recovery and volume-reduction treatment of hazardous waste.
- Pre-treatment and refining of heavy crude oil / heavy oil: The Double Distillation Plant conducts two-stage distillation separation for high-viscosity, high-sulfur and high-wax heavy crude oil and heavy oil, extracting light fractions and fractionating heavy fractions to supply qualified feedstock for subsequent catalytic cracking and hydro-refining.
- Deep purification of pyrolysis oil: Carry out two-stage distillation for impurity-removal, desulfurization and denitrification of pyrolysis oil produced from waste tires, waste plastics and oil sludge. Remove ash, colloids and acidic components in oil to upgrade oil quality. The output oil can be directly used as fuel oil or feedstock for further deep processing.
- Refining of vegetable oil / biodiesel: Conduct two-stage distillation for deacidification, deodorization and decolorization of waste cooking oil, acidified oil, palm oil and other oils to complete oil refining and purification. The output can serve as feedstock for biodiesel production or directly produce qualified industrial-grade vegetable oil.
- On-site crude-oil pre-treatment for mines / oilfields: Implement skid-mounted two-stage distillation pre-treatment on produced crude oil and slop oil at oilfield and mine sites to remove moisture, salt and mechanical impurities from crude oil, improve oil quality and cut costs for long-distance transportation and follow-up processing.
Packing & Shipping
The complete double-distillation skid unit is enclosed with an integral fixed base. Anti-rust and anti-corrosion treatment is applied to the skid main body for long-term outdoor storage. Precision instruments, sensors, electric-control modules, valves and pipe fittings are individually packed in shock-proof and moisture-proof wooden cases. Vulnerable parts, sealing elements and supporting tools are sorted and packed with clear labels.
We can provide complete packing list, equipment overall dimensions & weight, assembly drawings, operation manuals, material test reports, hydrostatic test reports, commissioning schemes and full-set import-export customs-clearance documents. Full-range international trade terms including EXW, FOB, CIF and DAP are acceptable. Skid dimensions fit standard container sea and rail transportation. Both integral hoisting and split shipment are available to guarantee intact delivery of precision equipment to major ports and inland destinations worldwide.
FAQ
Q1: What are the core differences between double distillation plant and single stage distillation equipment?
A: The core differences lie in separation accuracy and process adaptability. Single stage distillation can only realize preliminary material separation with low product purity and inaccurate component fractionation. Adopting primary rough distillation plus secondary rectification serial process, double distillation plant achieves precise separation of components with tiny boiling point differences for higher product purity. Meanwhile, it handles difficult to process materials featuring high boiling point, high viscosity and high coking tendency. Its process flexibility and processing performance far outperform single stage distillation units.
Q2: Does the double distillation plant consume more energy than single stage equipment?
A: No. Equipped with waste heat recovery system, our double distillation plant recovers waste heat from high temperature tail gas and kettle bottom residual liquid for feed preheating, greatly cutting heating consumption. Together with precise temperature control to eliminate useless heat loss, unit material energy consumption is 20% 30% lower than conventional single stage distillation equipment, leading to lower long term operating costs.
Q3: Can the plant process high viscosity and coking prone materials?
A: Absolutely yes. Special anti sticking scraper structure together with low speed rotation design is installed inside the plant, effectively preventing high viscosity and coking prone materials from wall sticking and carbonization under high temperature. Besides, boiling point of materials can be lowered by adjusting vacuum degree to complete distillation at low temperature and avoid high temperature coking. It is suitable for processing various high viscosity materials such as asphalt, heavy fuel oil and residual oil.
Company Profile & Production Capacity
Shangqiu Aotewei Environmental Protection Equipment Co., Ltd. is located in Shangqiu, Henan Province. It is a distillation and resource-recovery equipment manufacturer integrating R&D, design, production, installation & commissioning, sales and after-sales service of environmental-protection equipment. Our main products cover double distillation plants, single-stage distillation equipment, pyrolysis equipment and complete oil-refining plants. We also manufacture complete sets of industrial equipment including distillation towers, waste-oil cracking units, waste-oil distillation units, chemical refining units and crude-oil distillation units, and undertake customization of various non-standard skid-mounted pilot-scale and industrial-scale equipment.
The company has 5 senior technicians, 8 engineers and more than 70 professional-technical personnel. We possess complete capabilities for process development and equipment manufacturing ranging from laboratory bench-scale test, pilot test to large-scale industrial equipment. We strictly follow pressure-vessel manufacturing standards. All equipment undergoes automatic submerged-arc welding, ultrasonic non-destructive testing as well as hydrostatic and pneumatic tests to guarantee safe and stable operation.
Our production workshop is fully equipped with plate rolling, welding, heat treatment and non-destructive testing facilities. Full-process linkage commissioning is completed before equipment delivery to ensure production start-up right after arrival. Our products are exported to more than 32 countries and regions worldwide, serving chemical enterprises, research institutes, oil-refining projects and hazardous-waste-treatment companies. We have won wide recognition and trust from customers both at home and abroad by virtue of stable equipment performance, professional process design and comprehensive after-sales service.
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