Optimising Energy Efficiency through the Use of Glass-Lined Reactors
In the chemical industry, the operation of reactors – especially glass-lined reactors – is a key factor in terms of both energy consumption and the efficiency of chemical processes. In view of the growing importance of sustainability and energy efficiency in the industry, innovative approaches to optimising reactor operation are of crucial importance. Key strategies for increasing energy efficiency are the glass-lined reactors mentioned above, which are based on advanced stirring and heating technology and the use of baffles.
The operation of chemical reactors is energy-intensive, whereby stirring and heating technology offers significant savings potential. The challenge is to operate glass-lined reactors as efficiently as possible. A central starting point is the utilisation of stirring technology that is specifically suited to the respective process. In particular, processes that require high mixing speeds or in which highly viscous media are processed have a high energy requirement. By using specially developed agitators, the required mixing performance can be significantly improved, thus reducing process times and the associated amount of energy.
Process-specific Agitator Technology for Increased Efficiency
The targeted use of agitators can significantly shorten process times and thus reduce operating costs and CO2 emissions. For example, large-diameter agitators running close to the floor can be used for fast and efficient mixing of particles, while agitators with a high shearing effect are ideal for gassing and dispersion processes. Agitators running close to the wall, such as anchor or cross-bar agitators, are ideal for highly viscous media, as they ensure reliable homogenisation and efficient heat transfer.
In addition to agitator technology, the use of baffles offers further great potential for increasing energy efficiency. Baffles are used to increase the specific power input and shorten mixing times by disturbing the tangential product flow in the reactor, increasing turbulence and reducing tumour formation. They enable the targeted introduction of fluids at the best possible positions, which is particularly important during gassing or for effective mixing.
Advanced Heat Technology and Baffles as Efficiency Boosters
Choosing the right heat transfer medium, optimising the flow conditions and maximising the heat exchange surface are decisive factors for energy-efficient operation. Glass-lined shell and tube heat exchangers, which combine several functions such as flow disturbance, temperature measurement and efficient heat transfer, enable a significant reduction in energy consumption. The implementation of such technologies and the adaptation of operating parameters can lead to a significant increase in energy efficiency.
The remanufacturing of reactors and storage tanks also represents a CO2-saving alternative to new production. By remanufacturing used reactors, an astonishing 55% of energy can be saved compared to new production, which emphasises the importance of sustainability strategies in the chemical industry.
In order to further drive energy savings in the chemical industry, it is essential to fully utilise efficiency potentials. These strategies not only help to reduce operating costs and CO2 emissions, but also improve plant safety and product quality. And – last but not least – they are an essential contribution to sustainability.
Photo: Sergey Ryzhov
Source: ‘Chemietechnik’ trade journal