Integration of Contaminant Removal and Power Generation Processes
Publication Date: 2003-Sep-23
The IP.com Prior Art Database
TITLE: INTEGRATION OF CONTAMINANT REMOVAL AND POWER GENERATION PROCESSES
The present invention relates to the treatment of a contaminant-laden stream from a hydrocarbon-based process with a feed or byproduct stream, and utilizing the resulting contaminant-laden feed or byproduct stream in a power generation process. The contaminants are consumed in the power generating process.
Smith, A. R. and Klosek, J., “A review of air separation technologies and their integration with energy conversion processes,” Fuel Processing Technology, 70 (2001) 115-134.
FIELD OF THE INVENTION
The present invention relates to the integration of a stream used for contaminant removal with a power generation process. In particular, the present invention relates to any hydrocarbon-based process generating residual waste streams whose contaminants can effectively be utilized or destroyed in a power producing process. In an enhanced mode of operation a feed stream utilized to treat a contaminant-laden stream becomes enriched in contaminants, and both the contaminants and basic constituents of the feed stream are of value when introduced into the power generation process.
BACKGROUND OF THE INVENTION
The current interest in processing naturally occurring hydrocarbon reserves, upgrading hydrocarbon feedstocks and utilizing lower value hydrocarbon reject streams comes at a time of increased economic pressure to operate these processes in an efficient and environmentally friendly manner. There is often a power generation process associated with the hydrocarbon-based process, either supplying power to the owner’s facility or utilizing some or a portion of the products and byproducts to generate power for sale to the grid. The hydrocarbon-based process may employ sub-processes which generate byproduct streams that can be useful in the treatment of hydrocarbon waste streams, and of further value when introduced into a power generation process. As an example, Figure 12 of the cited reference depicts an air separation sub-process supplying industrial gases to an oxygen-based process. Byproduct nitrogen from the air separation unit is used to strip impurities from a wastewater stream. The humidified and contaminant-laden nitrogen stream is then introduced into the combustor of a gas turbine power generation unit. Figure 1 depicts the general methodology of using a feed or byproduct stream to treat a waste stream, yielding a contaminant-laden stream for introduction into a power generation process. There are many additional methods to implement the concept of Figure 1, as described in the following section.
DESCRIPTION OF THE INVENTION
The invention depicted in Figure 1 consists of a Primary Hydrocarbon Process, a Contaminant Removal Process and a Power Generation Process. In the general embodiment of the invention a contaminant-enriched stream, CE, generated in the Primary Hydrocarbon Process is treated by a contaminant-lean stream, FL, in t...