The electronic grade trimethylchlorosilane process unit is mainly composed of a dissolution kettle, a feeding kettle, a reaction kettle, a receiving tank, an alkali liquor kettle, and a residue slurry kettle. Its main instruments and pipe valves adopt high-performance products, and the non-standard parts of the unit are made of corrosion-resistant materials. The PLC system acquisition ensures the safety of operators. The overall level of the unit requires high automation, good data accuracy and repeatability, safety and reliability, and long-term stable operation. Process description: The solvent dissolves the solid phase and then reacts with the metered raw materials in the reaction kettle. The light components generated by the reaction are collected in the receiving tank after cooling and secondary condensation. The heavy phase containing residue is transferred to the residue slurry kettle by gas pressure for reaction. Before the reaction, the required amount of alkali liquor is added to the residue slurry kettle. The liquid phase of the entire reaction flows through Φ 3/4 " pipelines, and the gas phase uses Φ 1/2 " pipelines. For details, see the PID diagram. The reaction is "oxygen-free"; before the reaction, the system is first evacuated, and then replaced with N2.
Basic design of the process flow
1. The reaction kettles are all insulated with jackets, and the stirring paddles of the reaction kettle agitator can be manually disassembled and replaced.
2. Design of other parts: 1) All tanks are installed at a certain height from the ground to facilitate operators in feeding, discharging, or emptying; 2) Valves and pipelines for different materials are equipped with labels of different colors for clear identification and convenient distinction and operation; 3) The equipment layout is reasonable, standardized, and neat, conforming to the process flow direction while facilitating operation and maintenance; 4) All pipelines are installed neatly and positioned reasonably to minimize liquid accumulation and residue; 5) Low-point vents are set to ensure no material residue remains in the unit after the reaction; 6) All equipment and instruments requiring operation are designed within a convenient height and range for operators; all pressure gauges are within the visible height and range of operators; 7) All components of the process part are fixed with detachable methods, not welded to the frame, to facilitate future upgrades and expansion of the unit; 8) The precision components of the unit are equipped with corresponding protective measures, such as reactors equipped with pointer pressure gauges and pressure sensors, and filters before gas mass flow meters; 9) The unit adopts aluminum profiles, which are stable in structure, simple in assembly, and easy to move; 10) The overall process part of the unit is designed according to the user's space dimensions, placed in the pilot plant, with the control system placed nearby for easy operation.
