Pilot stage: The pilot stage refers to process verification and optimization on medium-sized equipment. The main purpose is to test and improve the process plan determined in the small trial stage, whether it is suitable for industrial production, and to provide reliable data and basis for industrial amplification. Tasks during the pilot phase include:

Evaluate whether the process plan provided in the pilot stage has special requirements under the pilot equipment and conditions, and whether it needs to be adjusted or improved.

Verify whether the process parameters determined in the pilot stage are stable and reliable, and whether the main economic and technical indicators are close to production requirements.

Further assess and improve process conditions, obtain basically stable data for each reaction step and unit operation, and conduct material balance calculations.

Select the appropriate equipment material and model, and consider factors such as the equipment¡¯s corrosion resistance, heat transfer, and mixing effect.

Determine the heat transfer and mass transfer requirements of each step of the reaction, such as the impact of the feeding method, feeding speed, refrigerant, etc. on the reaction in the exothermic reaction.

Determine the process flow and operating methods, consider adapting the reaction and post-processing operating methods to the requirements of industrial production,and pay special attention to shortening the process, simplifying operations,and improving labor productivity.

Propose a treatment plan for the three wastes,consider the impact of waste gas, waste water,waste residue,etc. on the environment,and take corresponding treatment measures.

Determine the specifications or standards of the raw materials, reagents or organic solvents used. Generally speaking, the specifications of the raw materials and reagents used in pilot tests should be consistent with those used in industrial production.

Determine the requirements for safe production, consider flammable, explosive, toxic and other dangerous factors, and take corresponding preventive measures.