Pilot-scale equipment for alcohol ether production.

The unit comprises five major components: a feed unit, a reaction unit, a tail gas absorption unit, utility systems, and a control system. The exterior of the unit’s frame is fitted with acrylic sealing panels, while the top of the frame is equipped with an explosion‑proof induced draft fan that operates continuously during experiments. A vacuum pump evacuates the system to remove moisture, after which nitrogen—after being regulated in pressure by a pressure reducing valve—is used to purge and replace the contents of the raw material tanks and the reactor. The raw material tanks are then purged with nitrogen. Propylene oxide, via interlocked cut-off valves and electronic weighing scales, is preheated in a preheater before being fed into the reactor. Once inside the reactor, stirring is initiated and the temperature is raised, while nitrogen is used to pressurize the system. Ethylene oxide is metered and controlled by a flowmeter, preheated in a preheater, and then introduced into the reactor. The ethylene oxide feed system is housed within a low‑temperature constant‑temperature chamber to maintain the ethylene oxide in liquid form. The reactor inlet is fitted with temperature and pressure measurement points. Materials undergo reaction within the reactor, which is thermally controlled using an oil bath jacket, supplemented by heat transfer via internal coil piping; the reactor temperature is interlocked with the regulating valve at the coil inlet. The reactor is equipped with pressure gauges, pressure sensors, rupture discs, proportional relief valves, as well as pneumatic ball valves for emergency venting in cases of overtemperature or overpressure—providing comprehensive pressure monitoring and safety measures. The bottom outlet valve and pipeline are heated using self‑limiting heating cables. After the reaction is complete, the exhaust valve is opened; the tail gas is scrubbed through an alkaline wash tower before being discharged, after which the system is evacuated under vacuum and purged. The gases are then discharged following passage through the alkaline wash tower. The entire unit is designed in accordance with the explosion‑proof IIBT4 standard. The equipment is centrally mounted on an aluminum alloy frame and is equipped with a Siemens automated control system.

Small-scale calcium carbonate experimental setup

This equipment is a small-scale functional nano-calcium carbonate production unit. The system is divided into a pretreatment system, a reaction system, and a post‑treatment system. The pretreatment system comprises two 50-L agitator tanks: a batching tank and a storage tank, both equipped with weighing capabilities. The tanks feature jacketed designs and are fitted with solenoid valves that are interlocked with temperature control. When the temperature exceeds the set limit, circulating cooling water is automatically activated; when the temperature falls below the preset value, the cooling water solenoid valve is shut off. After the materials are properly loaded into the batching tank and filtered through a basket filter, they are pumped into the storage tank. The carbonation tank has a capacity of 20 L and is equipped with both a pH electrode and a conductivity electrode. Ingredients are added to the batching tank in batches, and the reacted material is then subjected to filter press treatment.

Distillation unit

The glass distillation unit is tasked with tackling the most challenging separations in the energy and chemical industries—those “hard nuts to crack,” namely special materials with high melting points and high boiling points. For example, when developing high‑value‑added products such as polyoxymethylene and methanol derivatives, it provides core design data and process support for industrial-scale plants. From laboratory exploration to industrial-scale scaling up, distillation units have become the ideal choice for R&D institutions in fields like chemicals, new materials, and energy.

Vacuum Feeding Unit

Catalyst evaluation apparatus

Ethylene–Butene Mixed Gas System

Electrocatalytic Carbon Dioxide Reduction to Formic Acid and Formate Electrolysis Device

Continuous Hydrogenation Unit

Gas–liquid equilibrium apparatus

In the development of fine chemicals, process design and optimization, and specialized teaching experiments, accurate and reliable vapor–liquid equilibrium data often serve as a crucial research foundation. Our newly launched next‑generation vapor–liquid equilibrium experimental setup is dedicated to helping users obtain key physical property data more efficiently and conveniently in both R&D and teaching contexts, thereby supporting analysis and decision‑making.

Hydrogenation Fixed-Bed Reactor

This unit is a fixed-bed hydrogenation catalyst evaluation system developed by Yanzheng for the school, designed to optimize operating parameters and assess catalyst performance under laboratory conditions. The system consists of a single liquid feed line and four gas feed lines, one of which is used for sparging. The reactor is made of 310S stainless steel and can operate under two sets of conditions: high‑temperature, atmospheric pressure (1000°C at ambient pressure) and high‑temperature, high‑pressure (500°C at 10 MPa). The entire system is housed in a modular skid-mounted aluminum frame, with acrylic panels installed around the perimeter and a vent outlet on the top, which can be connected to the laboratory’s exhaust duct. This design prevents experimental materials from escaping into the entire lab, thereby enhancing experimental safety. The system employs a PLC‑plus‑computer control architecture to manage the test setup, collect data, and perform data management, offering functions such as equipment status monitoring, parameter adjustment, curve visualization, data storage and export, as well as alarm notifications.