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Novel filtration method for refining and chemical industries

a technology for chemical industries and filtration methods, applied in separation processes, magnetic separation, filtration separation, etc., can solve problems such as paramagnetic whole mass of contaminants, and achieve the effects of reducing downtime and hazardous operations, easy scaling, and reducing corrosion

Inactive Publication Date: 2010-03-18
CPC CORPORATION
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]This invention is directed novel filters that employ magnets for removing iron rust particulates and polymeric sludge, which are paramagnetic in nature, from refinery and chemical process streams. The performance of these filters is attributable to the presence of the magnetic fields that are induced by the magnets. The invention is based in part on the recognition that carbon steel, a common material in plant construction, is readily corroded by acidic components prevalent in process streams. The corrosion causes the formation of ferrous ions, which in turn react with sulfur, oxygen and water to form paramagnetic FeS, FeO, Fe(OH)2, Fe(CN)6, etc. that manifest as fine particles or visible flakes. These paramagnetic materials will attract other degradation sludge, making the whole mass of contaminants paramagnetic. Consequently, the entire mass of the contaminants can be readily removed from the process stream with the magnet filter device of the present invention.

Problems solved by technology

These paramagnetic materials will attract other degradation sludge, making the whole mass of contaminants paramagnetic.

Method used

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  • Novel filtration method for refining and chemical industries
  • Novel filtration method for refining and chemical industries
  • Novel filtration method for refining and chemical industries

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Embodiment Construction

[0015]Filtration devices of the present invention are particularly effective in removing contaminants from process streams. One source of the contaminants is the corrosion of process equipment and another source is the presence of active species in the process streams that ultimately lead to the formation of polar polymeric sludge. It has been demonstrated that these contaminants are paramagnetic in nature and therefore are attracted to magnets. The contaminants generally comprise a mixture of different materials are acidic, low in pH, black and viscous, and tend to deposit throughout the process lines, including filters, heat exchangers, catalyst beds, thereby reducing process capacity and efficiency. Since most process equipment in the refining and chemical industries is made from carbon steel that is susceptible to corrosion by the acidic substances in the process streams, the contaminants are generated by oxidation due to air leakage in the system as well as by the chlorinated a...

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Abstract

A novel design of filters for removing iron rust particulates and other polymeric sludge from refinery and chemical process streams that are paramagnetic in nature is provided. The performance of these filters is greatly enhanced by the presence of the magnetic field induced by magnets. Basically, the filter comprises a high-pressure vessel with means to support the plurality of magnets in the form of bars or plates that are encased in stainless steel tubes or columns. Filters with various configurations are disclosed for accommodating the removal of contaminants from the process streams of different industries, with high efficiency for contaminants removal, simple construction, low operational and maintenance costs, and low hazardous operation.

Description

REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation-in-part application of application Ser. No. 12 / 112,623 that was filed on Apr. 30, 2008.BACKGROUND OF THE INVENTION[0002]Process streams in refineries are often contaminated with components that are detrimental to down-stream process units and / or are corrosive to the process equipment, or they are contaminated with solid matter, such as iron rust, which tends to interfere with process lines, valves, and pumps. The contaminants must be removed before the streams enter certain parts of the process or process units in order to maintain the process or unit performance. A filtration screen, filter housing or cartridge containing adsorbents or filtration media is usually placed in front of the process unit to remove the bulk of the undesirable matters. For example, a RONNING-PETTER multiplex filter is used to remove solid matters from atmospheric distillation residual oil before it is fed to a hydrotreater at tempera...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B03C1/02
CPCB01D29/23B01D35/06B03C1/0332B03C1/286C10G21/28B03C1/30C10G31/09C10G32/02B03C2201/28B03C2201/18B03C2201/20C10G25/003B01D41/00
Inventor YEN, PING-WENHO, YUH-SHEVECHIU, HUNG-TZUHWU, CHUNG-JONGCHANG, JUNE-CHENGLIN, TZONG-BINYAN, TSOUNG Y.HONG, CHENG-TSUNGSHEN, HUNG-CHUNGLEE, JENG-CHENGLEE, FU-MING
Owner CPC CORPORATION
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