China Chengda's Jointly Developed 20,100 Nm³/h Chlorine Gas Compressor Completes Industrial Verification

en.Wedoany.com Reported - Recently, with the successful first-time startup of Line 1 of Gansu Juhua New Materials Co., Ltd.'s 900,000 t/a ion-exchange membrane caustic soda plant, the high-end ultra-large flow chlorine gas compressor jointly developed and manufactured by China Chengda Engineering Co., Ltd. under China National Chemical Engineering, the project's EPC general contractor, and other units, was put into operation simultaneously and completed industrial verification. The equipment has a single-unit gas transmission capacity of 20,100 standard cubic meters per hour, capable of matching a single-line 450,000 t/a ion-exchange membrane caustic soda production capacity. The first ion-exchange membrane caustic soda plant of Gansu Juhua successfully started up on September 1, and the project has now entered the trial production stage.

The 900,000 t/a ion-exchange membrane caustic soda plant of Gansu Juhua adopts a dual-line configuration, with a single-line design capacity of 450,000 t/a. The chlorine gas compressor put into operation this time was developed for the chlorine gas transmission conditions of large-scale ion-exchange membrane caustic soda plants. The project team disclosed that the maximum applied flow rate of similar imported units previously was approximately 18,000 standard cubic meters per hour, while the new unit has increased the single-unit gas transmission capacity to 20,100 standard cubic meters per hour. In response to the highly corrosive and toxic chlorine gas medium and the large-flow continuous operation conditions, coordinated design was carried out for sealing, corrosion protection, and the plant-wide interlock system.

During the research and development process, Chengda Company, together with the owner and equipment manufacturing units, developed the caustic soda production process system and the compressor body simultaneously. After multiple rounds of scheme demonstration and simulation, engineering verification was conducted on key aspects such as stable operation under large-flow chlorine gas, safe sealing, and corrosion resistance. This unit was put into actual production with the first-time startup of the Line 1 caustic soda plant, marking the equipment's transition from the research, development, and manufacturing stage to the industrial operation verification stage.

According to the environmental impact report publicly disclosed by the Gansu Provincial Department of Ecology and Environment, the ion-exchange membrane caustic soda plant is one of the basic production units of Gansu Juhua's high-performance silicon-fluorine new materials integration project. Its main product includes caustic soda, with co-production of chlorine gas and hydrogen. The project also plans production facilities for industrial silicon, polysilicon, methane chloride, anhydrous hydrogen fluoride, R22, TFE, HFP, PTFE, FEP, PVDF, PFA, and fluororubber. The project has obtained filing from the Yumen City Development and Reform Bureau, with the project code 2303-620981-04-01-763835.

The Gansu Juhua project is located in Yumen City, Gansu Province. After the successful startup of the ion-exchange membrane caustic soda plant on September 1, the methane chloride plant started up on September 4, and the first batch of caustic soda products was loaded and sold on September 5. Juhua Co., Ltd. stated at its 2026 semi-annual results briefing that the project will continue to advance the startup and commissioning of the remaining production facilities.