Catalytic dewaxing

Reduces yield loss of diesel fraction by up to 30%

Meet the demands of specified cold flow property ranges

Flexible solution for meeting the growing demand

Significant cold flow improvement

The cold flow properties of higher end-point feeds, tight oils, or renewable feeds need to be carefully managed in diesel hydrotreaters operating in cold regions or winter seasons.

The freezing point of paraffin in the upper ULSD boiling range is critical because it determines cold flow properties and can cause the ULSD to go off-spec due to wax crystallization. Topsoe offers a state-of-the-art isomerization dewaxing technology for design of grassroot units or revamp of existing diesel hydrotreating units. These properties can be calibrated and improved through a process called catalytic dewaxing.

Business value

Topsoe’s dewaxing technology radically reduces the yield loss of the diesel fraction by as much as 30% compared to conventional dewaxing technologies. Our dewaxing reactors are resistant to contamination and can be installed upstream from existing hydrotreaters in a configuration that only slightly raises hydrogen consumption.

Our latest catalytic dewaxing technology delivers a flexible solution for meeting the growing demand for high-value products that meet the demands of specified cold flow property ranges – and increase refinery earnings.

Cold flow properties have to be seasonally varied

Cold flow properties are determined by the wax crystals that form when oil products are cooled. This means these key properties are determined by the high melting point of the n-paraffins in the higher boiling range of the feed.

Isomerization selectivity:

A true isomerization catalyst is one that has been documented as possessing only minimal tendencies toward cracking of the hydrocarbon chains. These types of catalysts for sour-mode application are based on a zeolite structure featuring selected base metals that are not sensitive to the sulfur, nitrogen, hydrogen sulfide, and ammonia present in a sour operating environment. In fact, the base metals used in Topsoe dewaxing catalysts ensure exceptional hydrogenation activity in such conditions.

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whitepaper

The art of dewaxing, while maximizing yields

Learn why dewaxing in renewable fuel production is important and which methods that can maximize yields while meeting cold flow requirements.

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Definition

Catalysts

Catalysts can accelerate chemical reactions, control selectivity, and reduce energy requirements. Their ability to optimize process efficiency and product quality make them indispensable in industrial processes.

Definition

Outputs

The output is the result or end product you're looking to get out of your refinery or chemical process. The output helps determine which technologies and catalysts you need.

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