Integrated Steam Generator and Superheater for Ammonia Synloop Heat Recovery
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Solution Overview
Problem
Existing ammonia production systems require separate equipment for steam generation and superheating, leading to increased space and equipment costs.
Innovation Solution
An integrated steam generator/steam superheater apparatus that combines steam superheating and generation into a single unit, using a superheater chamber and steam generator chamber connected via a steam drum, allowing process gas to superheat steam and generate steam from boiler feed water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate equipment is used for steam generation and superheating, then each function can be optimized independently, but space requirements and equipment costs increase
Solution Approach 1:
The patent combines the steam generator and superheater into a single integrated apparatus where the steam generator chamber and superheater chamber share common structural elements and are connected through a steam drum, reducing the overall footprint while maintaining functional independence of each section
Solution Approach 2:
The integrated apparatus performs multiple functions within a single system: the steam generator chamber generates steam from boiler feed water, the steam drum separates and stores steam, and the superheater chamber superheats the generated steam, allowing one piece of equipment to replace multiple separate units
2Ease of operation
If separate equipment is used for steam generation and superheating, then maintenance and operation of each unit can be independent, but equipment costs and complexity increase
Solution Approach 1:
The patent integrates the steam generator and superheater into a single apparatus with shared structural components and a unified process flow, reducing the number of separate equipment items while maintaining operational independence through distinct chambers and controlled interfaces
3Loss of energy
If process gas is cooled in multiple separate stages, then heat recovery efficiency can be maximized, but the number of heat exchange units and space requirements increase
Solution Approach 1:
The patent combines multiple heat exchange functions into the integrated steam generator/superheater apparatus, where process gas sequentially passes through the steam generator chamber and superheater chamber, allowing multi-stage heat recovery within a single unified equipment item rather than requiring separate heat exchangers for each stage
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
Reduces space requirements and equipment costs by integrating steam generation and superheating into a single apparatus, enabling efficient production of superheated steam for ammonia plants.
Implementation Method 1
the superheater chamber containing a first one or more heat exchange tubes and configured so that process gas within the superheater chamber superheats steam contained within the first one or more heat exchange tubes
Implementation Method 2
the steam generator chamber containing a tube bank comprising a plurality of second heat exchange tubes and configured so that process gas from the steam superheater section passes into the plurality of second heat exchange tubes and generates steam by transferring heat to water contained within the steam generator chamber
Data Source
AI summary
An integrated steam generator/steam superheater apparatus is disclosed. The disclosed apparatus can be used in a process, such as an ammonia synthesis process, to cool an ammonia converter effluent process gas and to generate superheated steam. The integrated apparatus includes a steam superheater portion wherein hot process gas is used to generate superheated steam by heat transfer to saturated steam. The apparatus also includes a steam generator portion wherein the process gas is used to generate saturated steam by heat transfer to water. Both the superheater and the steam generator are integrated into a single unit, without intervening pluming, etc., thereby saving space and equipment.