Three-Stage Compressor for Hydroprocessing Zones
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Hydroprocessing units face high capital costs due to the expense of compressors, which can be mitigated by integrating hydrogen compression systems across multiple processing units, but existing solutions do not effectively minimize the number of compressors while maintaining efficient hydrogen distribution.
Innovation Solution
A three-stage compressor system is integrated across hydrocracking, slurry hydrocracking, and hydrotreating zones, allowing for shared spare compressors and reduced capital costs by providing hydrogen to multiple zones at varying pressures, thus optimizing hydrogen distribution and recycling within the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple compressors are used to serve different hydroprocessing zones, then each zone can receive hydrogen at required pressures, but capital costs and maintenance expenses increase
Solution Approach 1:
A single compressor system is designed to serve multiple hydroprocessing zones (hydrocracking, slurry hydrocracking, hydrotreating) by providing hydrogen at different pressures through strategic tap points. The compressor operates in multiple functions - serving as a primary compressor for some zones and a backup for others, eliminating the need for separate dedicated compressors for each zone while maintaining reliable hydrogen supply to all.
2Ease of manufacture
If hydrogen compression systems are integrated across multiple units, then capital costs are reduced, but hydrogen distribution complexity increases
Solution Approach 1:
The hydrogen distribution system is segmented into multiple pressure zones with strategic tap points positioned at different locations. The compressor discharge is divided into multiple pressure levels, with intermediate pressure taps allowing hydrogen to be distributed to zones requiring different pressures. This segmentation enables a single compressor to serve multiple zones without requiring complex pressure regulation equipment at every zone.
Solution Approach 2:
Pressure reduction valves and storage vessels act as intermediaries between the compressor and various hydroprocessing zones. These intermediaries manage the pressure differential by allowing hydrogen to flow from high-pressure compressor discharge to lower-pressure zone requirements through controlled reduction, simplifying the overall distribution architecture while maintaining ease of manufacture.
3Device complexity
If a single compressor serves multiple zones, then capital costs are minimized, but the ability to provide varying hydrogen pressures is compromised
Solution Approach 1:
The system employs dynamic pressure management where the compressor can operate at varying speeds and the pressure reduction valves can dynamically adjust flow rates and pressures. This dynamic control allows a single compressor to adaptively serve multiple zones with different hydrogen pressure requirements, maintaining versatility while minimizing the number of compressors needed.
Solution Approach 2:
The system utilizes parameter changes in pressure and flow rate to enable a single compressor to serve multiple zones. By varying the operating parameters of the compressor and adjusting the pressure reduction valves, hydrogen can be delivered at different pressures to different zones, maintaining the adaptability needed for diverse hydroprocessing requirements without requiring multiple dedicated compressors.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This integration reduces capital costs by at least 25% and allows for more efficient hydrogen distribution, enabling more severe processing conditions and reduced utility usage across the hydroprocessing facility.
Implementation Method 1
The hydrogen can be compressed to the pressure required by the individual units. Such compression is usually undertaken with a compressor.
Data Source
AI summary
One exemplary embodiment can be a process for hydrocarbon conversion. The process can include providing a feed to a slurry hydrocracking zone, obtaining a hydrocarbon stream including one or more C16-C45 hydrocarbons from the at least one separator, providing another feed to a hydrocracking zone, and providing hydrogen from a three-stage compressor to the slurry hydrocracking zone and the hydrocracking zone. Moreover, the slurry hydrocracking zone may include a slurry hydrocracking reactor and at least one separator.