Monitoring of DOTP production via esterification with inline
This Process Application Note presents a way to closely monitor multiple parameters simultaneously during the DOTP production process via near-infrared spectroscopy (NIRS) technology. Introduction Polyvinyl chloride (PVC) is a plastic polymer which is seen everywhere: in pipes, bank cards, sports equipment, and even furniture.
Monitoring of DOTP production via esterification with inline
One of the most common methods for manufacturing DOTP is by direct esterification of purified terephthalic acid (TPA) and the branched-chain 2-ethylhexanol (2-EH). TPA comes in pelleted form, 2-EH as a liquid solution, and they are mixed together in a 1:2 ratio in an industrial reactor.
Pseudo-homogeneous kinetic modeling of dioctyl terephthalate
As a green plasticizer, the industrial production of dioctyl terephthalate (DOTP) is still facing the problem of high energy consumption. To optimize the production process and reactor, it is essential to understand the kinetic behavior of reaction system.
Pseudo-homogeneous kinetic modeling of dioctyl terephthalate
production of DOTP [20]. At present, the industrial production of DOTP by direct esteri-fication of PTA and 2-EH is usually carried out in a reactive distil-lation unit, due to the reversibility of the esterification reaction. In this process, a great deal of heat is consumed to ensure the gener-ated H 2 O in the reactions can be removed in time.
Monitoring of DOTP production via esterification with inline
Monitoring of DOTP production via esterification with inline analysis Application Note AN-PAN-1053 Polymers and plastics are a mainstay of modern life. Because of their versatility and physical properties, plastics and polymers have conquered nearly every aspect of human activity: airplanes and cars, packaging of all kinds, medical devices and
- How to monitor multiple parameters in DOTP production?
- A more secure, effective, and quicker method to concurrently monitor multiple parameters in DOTP production is with inline process analysis using reagent-free near-infrared spectroscopy (NIRS).
- What is DOTP & how does it work?
- DOTP is mainly manufactured by direct esterification. Many process parameters need to be monitored simultaneously to guarantee high product quality and high reaction throughput—something that is not possible with traditional laboratory analysis.
- How to optimize the production process of Dioctyl terephthalate (DOTP)?
- As a green plasticizer, the industrial production of dioctyl terephthalate (DOTP) is still facing the problem of high energy consumption. To optimize the production process and reactor, it is essential to understand the kinetic behavior of reaction system.
- How is high-purity DOTP obtained?
- High-purity DOTP is obtained through this process. Many parameters need to be monitored in order to guarantee a high reaction yield and high DOTP quality. Traditionally, the amount of reactants and products are measured in the laboratory after taking a sample from the production process.
- What is Dioctyl terephthalate (DOTP)?
- Dioctyl terephthalate (DOTP) is one of the most used non-phthalate plasticizers in the polymer industry since it possesses good plasticizing properties yet does not jeopardize human health. DOTP is mainly manufactured by direct esterification.
- How many phthalate ester plasticizers are used in 2022?
- In 2022, phthalate esters accounted for more than 3 million tons of global plasticizer consumption [ 2]. However, due to environmental and health risks, the world use of non-phthalate ester plasticizers is expected to increase to around 2.6 million tons [ 2 ].
