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Alfa Laval Packinox for pyrolysis gasoline hydrogenation

Alfa Laval Packinox for pyrolysis gasoline hydrogenation

Product catalog summary

Introduction
The document discusses the Alfa Laval Packinox Standard Combined Feed/Effluent Heat Exchanger, specifically designed for pyrolysis gasoline hydrogenation. This heat exchanger offers financial and environmental benefits by replacing multiple tubular heat exchangers in aromatic gasoline hydrogenation units.

Specifications and Benefits
The Alfa Laval Packinox heat exchanger was retrofitted in 1995 to replace three tubular heat exchangers. This retrofit allows the unit to operate iso-thermically using its exothermic reaction heat, leading to reduced operating costs and improved environmental conditions.

Energy and Environmental Impact
The retrofit bypasses the existing H2 heater during normal operations, saving 8.3 MW in fuel and reducing flue gas emissions. Additionally, the power demand for the recycle compressor is reduced by 100 kW due to a new control scheme that decreases H2 flow.

New Requirements
The new configuration requires an increase of 0.9 MW in steam boiler firing and 1.7 MW of steam for the stabilizer reboiler. However, these requirements are offset by the energy savings from replacing shell and tube exchangers.

Overall Savings
The net energy savings amount to approximately 6 MW, resulting in an annual reduction of US$ 0.4 million in plant fuel costs.

Contact Information
For more details, contact Alfa Laval through their website at www.alfalaval.com.

Note: Data provided by Mitsui Chemicals / Mitsui Sekka Engineering.

Catalog excerpts

Alfa Laval Packinox for pyrolysis gasoline hydrogenation-1

Standard combined feed/effluent heat exchanger Alfa Laval Packinox for pyrolysis gasoline hydrogenation Alfa Laval Packinox’s Standard Combined Feed/Effluent Heat Exchanger for cracked gasoline hydrogenation units has proved to be a financially – and environmentally – advantageous solution for this application. The example below shows how an aromatic gasoline hydrogenation unit (fig. 1) retrofitted with a single Alfa Laval Packinox Standard Combined Feed/Effluent Heat Exchanger in 1995 (fig. 2) was able to replace three tubular heat exchangers used to pre-heat the feed and H2. Aromatic gasoline Aromatic gasoline Alfa Laval Packinox heat exchanger fig. 1 fig. 2

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Alfa Laval Packinox for pyrolysis gasoline hydrogenation-2

How to contact Alfa Laval Up-to-date Alfa Laval contact details for all countries are always available on our website at www.alfalaval.com PPI00200EN 0705 Alfa Laval reserves the right to change specifications without prior notification. Better heat recovery from reactor effluent enables the unit to run iso-thermically on its own exothermic reaction heat. The revamp has resulted in significantly lower operating costs on associated equipment fuel consumption and has improved environmental conditions. With Alfa Laval Packinox, the existing H2 heater is bypassed during normal operation. This represents...

Open the catalog to page 2

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