20L Polymerization Reactor System

The 20L polymerization reactor unit features a reactor—its core component—assembled from Hastelloy C-276, a material renowned for its exceptional corrosion resistance. The temperature control system employs a precision oil bath to regulate the temperature of the reactor jacket, ensuring stable reaction conditions throughout the process. The reactor is designed for a maximum operating pressure of 5 MPa, with an operating pressure range of -0.1 to 3 MPa; its design temperature is 320°C, and the maximum service temperature can reach 300°C. The specially designed anchor‑type and ribbon‑type impellers are interchangeable as needed, with a maximum stirring speed of 150 rpm. In terms of vacuum extraction, the reactor can achieve an absolute pressure as low as 20 Pa, and it discharges product via a bottom-mounted threaded plug. In addition, the unit is equipped with a regulating valve that allows for slow, controlled pressure relief according to pre‑set programs, enabling precise management of system pressure. For materials, the unit’s primary instruments and piping valves are all sourced from high‑quality products by well‑known brands, while non‑standard components are fabricated from corrosion‑resistant materials to extend the overall service life of the equipment. The unit utilizes a PLC‑plus‑touchscreen configuration control system and is equipped with a computer, enabling remote operation and significantly enhancing both operational convenience and safety. To ensure the safety of both the equipment and the operators, the unit is outfitted with multi‑level critical protection systems, providing a robust foundation for stable and reliable equipment operation.

Polyester Polymerization Reactor

The small-scale polymerization reactors manufactured by Shanghai Yanzheng Instruments cover nylon, polyester, biodegradable materials, and other polymers, primarily used in the fields of resin, rubber, plastics, and other high‑molecular materials. Esterification is a reaction in which alcohols react with carboxylic acids or inorganic oxygen‑containing acids under specific temperature and pressure conditions to produce esters and water. From small‑scale trials to production‑scale operations, these reactors can accommodate various polymers and diverse polymerization processes, offering high‑end equipment and comprehensive product solutions.

5L Polymerization Reactor

The 5L polymerization reactor features oil-bath heating, a fixed reactor lid, and an electrically driven lifting mechanism for the reactor body, enabling easy material discharge via tilting. This design enhances both operational convenience and ease of cleaning for operators. The reactor is primarily used in petrochemical processes. The reactor vessel is made of 316L stainless steel, while the control system boasts a touch-screen interface with modular display options, allowing users to customize the display layout. The pressure sensor is a high‑quality brand imported from the UK, featuring digital pressure display and built‑in overpressure alarm interlock functionality.

Portable Hydrogenation Unit

The YZHLab series from YanZheng Instruments is a miniature fixed-bed reactor system. This reactor system is widely applicable for evaluating various catalysts and reaction process conditions under gas–solid phase or trickle-flow conditions, including catalyst screening, compositional screening and optimization of multi‑component catalysts, optimization of reaction conditions and processes, as well as catalyst life studies. The YanZheng YZHLab system can also be custom‑designed to meet users’ specific experimental requirements and research directions, perfectly aligning with the actual application needs of end users. The image shows a mini‑scale single‑channel fixed‑bed reactor system delivered by YanZheng to a customer—featuring 24‑hour unattended operation, exceptional chemical compatibility, highly stable electrical control, superior safety features, and precise calibration capabilities. YanZheng’s system integrates advanced technologies such as automatic control and information processing, leveraging material R&D workflows to significantly boost research productivity. Compared to traditional single‑tube reactors, it is more compact, more integrated, smarter, and more scalable.

Fixed-Bed Catalyst Evaluation System

The fixed-bed catalyst evaluation unit is an experimental apparatus used to test and assess catalyst performance. It simulates the operating conditions of industrial fixed-bed reactors, enabling quantitative analysis of key parameters such as catalyst activity, selectivity, stability, and mechanical strength at the laboratory scale. The fixed‑bed catalyst evaluation unit can conduct comprehensive evaluations of catalysts under conditions closely resembling real industrial reactions, providing a reliable basis for catalyst development and industrial applications.

Thermoelectrocatalytic Cracking Reactor

The unit is equipped with a single reactor lined with quartz, designed to operate at pressures up to 10 MPa at temperatures below 300°C and 3 MPa at 900°C. The unit features one gas inlet and two liquid inlets, with the reactor constructed from 310S stainless steel. The reactor is fitted with electrodes positioned to avoid high-temperature exposure, and the electrode assembly incorporates an insulating design at the sealing area. The height of the upper electrode plate can be finely adjusted within a range of 5–10 mm. A quartz liner is installed inside the reactor to provide electrical insulation between the catalyst and the reactor wall. The gap between the liner and the reactor is meticulously calculated and sealed at one end, creating a dead volume between the glass liner and the inner wall of the reactor. The reactor’s material inlet extends into the liner, minimizing the risk of gas entering the space between the liner and the reactor’s inner wall. The electrodes are rated for 2000 V.

Small Reactor Vessel

Small-scale reactors are widely used in chemical laboratories, biotechnology labs, pharmaceutical companies, food science research, and other fields for studying new materials, new drugs, new compounds, and more. Micro high‑pressure reactors and laboratory-scale reactors—designed for your chemical reactions with professionalism, rationality, and precision.

Three‑Channel Fixed Bed Reactor

The multi‑channel fixed‑bed jacket system from Yanzheng Instruments offers precise feed delivery, high parallelism, and excellent reproducibility. Temperature, pressure, and even stirring speed can all be controlled independently, and operations such as online sampling and analysis can be fully automated. This is a truly fully automated, high‑throughput system that can boost research efficiency by a factor of dozens. Yanzheng Instruments can customize complete reaction systems according to customers’ specific process requirements.

Fixed-Bed Reaction System – Dual-Channel Explosion-Proof Hydrogenation Fixed Bed

The fixed-bed reactor system is a commonly used reactor type in chemical processes. Its primary characteristic is that the catalyst is immobilized in solid form within the reactor, while the reactants—whether in liquid or gaseous form—pass through the fixed bed and come into contact with the catalyst to undergo chemical reactions. Fixed-bed reactor systems are widely employed in fields such as chemical engineering, petroleum refining, fine chemicals, and environmental protection. For example, in petroleum refining, fixed-bed reactors are used in processes like cracking, reforming, and alkylation; in fine chemicals, they are utilized for the synthesis of dyes, pharmaceuticals, pesticides, and other chemical products; and in environmental protection, they are applied to exhaust gas treatment and wastewater treatment.

Nitrification Cascade Reactor System

The nitration reactor is primarily used for the uniform feeding of solid dehydrating agents in verification experiments and evaluation studies on the synthesis of mononitrotoluene, with the side reaction being the synthesis of 2,4,6-trinitrotoluene. The byproduct of this side reaction is highly flammable and explosive, commonly known as TNT. The reaction system contains acidic components, so materials that come into contact with the reactants must not be metallic—including piping and valves. The reactor is installed outdoors in a well‑ventilated, shaded area, and key valves are equipped with automatic control to ensure operator safety. After the reaction is complete, the product is washed with alcohol and then with water; following filtration, settling, and drying, it is dissolved in a suitable solvent, sealed, and stored.