18277415. METHOD OF SEPARATING PHOSGENE AND HYDROGEN CHLORIDE simplified abstract (BASF SE)
Contents
METHOD OF SEPARATING PHOSGENE AND HYDROGEN CHLORIDE
Organization Name
Inventor(s)
Torsten Mattke of Ludwigshafen am Rhein (DE)
Jens Ferbitz of Ludwigshafen am Rhein (DE)
Peter Van Den Abeel of Antwerp (BE)
Hans-Juergen Pallasch of Ludwigshafen am Rhein (DE)
METHOD OF SEPARATING PHOSGENE AND HYDROGEN CHLORIDE - A simplified explanation of the abstract
This abstract first appeared for US patent application 18277415 titled 'METHOD OF SEPARATING PHOSGENE AND HYDROGEN CHLORIDE
Simplified Explanation: The patent application describes a process for separating phosgene and hydrogen chloride by distillation, with the addition of an absorbing solvent during start-up and shut-down phases for safe operation.
- Convey a mixed stream of hydrogen chloride and phosgene into a distillation column.
- Withdraw a bottom stream containing phosgene and a top stream containing hydrogen chloride from the column.
- Compress and partially condense the top stream to form a liquid stream.
- Decompress a portion of the liquid stream to create a cooled liquid stream and a cooled gas stream.
- Recycle the cooled liquid stream to the top of the distillation column as reflux.
- Temporarily introduce an absorbing solvent into the column during process start-up and shut-down.
Potential Applications: This technology can be applied in chemical manufacturing processes where the separation of phosgene and hydrogen chloride is required, such as in the production of various chemicals and materials.
Problems Solved: The process allows for safe and efficient separation of phosgene and hydrogen chloride without the need for storing hydrogen chloride separately, ensuring continuous operation even during fluctuations in hydrogen chloride production.
Benefits: - Enhanced safety during operation - Improved efficiency in separating the two chemicals - Elimination of the need for separate storage of hydrogen chloride
Commercial Applications: The technology can be utilized in chemical plants, pharmaceutical manufacturing, and other industries where precise separation of chemicals is crucial for production processes.
Prior Art: Readers can explore prior patents related to distillation processes for separating chemicals, particularly those involving the use of absorbing solvents for enhanced safety and efficiency.
Frequently Updated Research: Stay informed about advancements in distillation technology, solvent absorption methods, and process optimization for chemical separation applications.
Questions about the Technology: 1. How does the temporary introduction of an absorbing solvent enhance the safety of the distillation process? 2. What are the key factors to consider when implementing this separation process in different industrial settings?
Original Abstract Submitted
A process of separating phosgene and hydrogen chloride, comprises: conveying a mixed stream containing hydrogen chloride and phosgene into a distillation column; withdrawing from the distillation column a bottom stream containing phosgene; withdrawing a top stream containing hydrogen chloride; compressing at least a portion of the top stream and at least partially condensing the compressed top stream to form a liquid stream, decompressing at least a portion of the liquid stream to form a cooled liquid stream and a cooled gas stream; and recycling the cooled liquid stream to the top of the distillation column as a reflux; the process additionally comprising temporarily introducing an absorbing solvent into the distillation column, in particular during starting-up and/or shutting-down of the process. The process allows for safe operation even when hydrogen chloride production only gradually begins or decreases, without the necessity of storing hydrogen chloride.
