• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The present invention relates to a semi-continuous deodorizer comprising at least one stripping section, which stripping section comprises a buffer tray for supplying liquids, a control means for regulating the flow, a liquid distributor, a structured packing, and a receiving trough, the regulating means for distributing the means for supply liquid flow over a structured gasket. The liquid in the gasket is contacted against current with a stripping agent already once used, which is returned from one or more trays installed in the apparatus. The invention further relates to a process for refining fats and oils in a semi-continuous deodorizer, a process for reusing the stripping agent in a single semi-continuous deodorizer, separating the recovered distillate additives adapted to the feed layer, and using the semiconductor.
    公开号:SE0950585A1
    申请号:SE0950585
    申请日:2009-08-12
    公开日:2011-02-13
    发明作者:Florivaldo Galina；Lucas Klettenhofer；William Younggreen；Steen Balchen；Preben Rasmussen
    申请人:Alfa Laval Corp Ab；
    IPC主号:
    专利说明:

    In many continuous deodorizer designs on the market today, the tearing effect has been improved by the oil and steam being in contact in a proper countercurrent manner while the oil forms a thin film on the structured gasket. The contact in countercurrent reduces the consumption of steam, which depending on the use of vacuum constitutes a significant part of the total operating costs.
    However, the continuous deodorizer designs appeal to the large scale bulk operators and are not suitable for discontinuous operation due to high batch to batch contamination and loss of production time upon product change.
    There is a steady need for flexible deodorizers to treat special and tailored mixtures and thus there is a need for without deodorizers that can treat small batches significant crush contamination or time delay.
    The availability of better crude oil qualities enables refining through the so-called physical refining method, which offers lower operating costs than the alternative refining through alkali neutralization but requires higher stripping efficiency.
    The interest in limiting the formation of unwanted by-products such as improved semi-continuous deodorizers, where the stripping function traditionally requires trans fatty acids, etc., requires stripping efficiency is carried out with mammoth pumps.
    However, the steam consumption required to perform a certain separation task is by nature controlled by the flow contact, and the cross-flow contact obtained in the mammoth pumps can never compete with the thin film in the countercurrent flow in the gasket with respect to the utilization of the supplied stripping steam.
    Accordingly, the present invention solves the above-mentioned problems by providing a new semi-continuous deodorizer. Accordingly, the present invention relates to a semi-continuous deodorizer comprising at least one stripping section, stripping section, which stripping section comprises a buffer tray for supply, means for regulating the liquid flow, a liquid distributor, a structured gasket and a receiving tray. The means for regulating the liquid supply regulate the liquid flow from the buffer trough to the distributor in order to distribute the liquid evenly over the cross-sectional area of the structured gasket. By using a structured gasket, the stripping task is no longer limited by the required holding time, and the applied holding time can thus be optimized to obtain the desired product quality with respect to the parameters of the ongoing thermal reactions. The gasket can thus allow the refiner to adjust or adjust the holding time required for the thermal reactions, and to offer a greater degree of freedom to increase capacity, reduce unwanted side reactions such as the formation of trans fatty acids, etc.
    Thus, by incorporating a structured gasket into the trough-based semicontinuous deodorizer of the present invention, the stripping efficiency will enable physical refining with lower steam consumption and shorter holding times than in semi-continuous deodorizers equipped with mammoth pumps only.
    The individual deodorizers can be designed according to specific application properties. The amount of crush contamination is related to the packing volume, and the actual packing size contained in the deodorizer can offset the need for stripping to an acceptable cross-contamination level. There may be ways to reduce cross-contamination and thereby improve the operational benefits, e.g. by blowing a gas, a steam, etc. through the structured gasket. The need for a buffer tank and flow regulating means is critical to avoid flooding of the gasket because the flow rate used to empty the batch of oil from trough to trough is much higher than the required flow rate inside the structured gasket.
    The semi-continuous gasket may also comprise combinations of trays equipped with mammoth pumps and stripping sections, or the semi-continuous deodorizer may comprise more than one stripping section which has no trays of mammoth pumps.
    The heat transfer in the semi-continuous deodorizer can be performed with one or more heat exchanger systems. The design of the heat exchanger systems can be vertical bundles of U-tubes, horizontal bundles of U-tubes, helical loops or other embodiments of heat transfer means adapted to the current operating method.
    The semi-continuous deodorizer according to the invention may comprise at least one heat exchanger system in the lower part of the semi-continuous deodorizer and at least one system in the upper part of the semi-continuous deodorizer. The heat exchanger systems of the semi-continuous deodorizer may be connected to each other by pipes or conduits so that heat accumulated in a heat exchanger fluid collected from a cooling system is used for heating purposes in a heating system, and that the heat transfer fluid so cooled recirculated and reheated again in the same cooling system.
    The semi-continuous deodorizer may also comprise internal conduits or external conduits or combinations of internal conduits and external conduits may be arranged to collect once used streams of stripping gas from one or more trays or sections for reuse of this gas in a stripping section. The gas flow leaving a trough, where contact has been countercurrent, or leaving a stripping section located near the bottom of the deodorizer where the purity of the oil is high, has only to a small extent been contaminated with volatile substances and therefore has a significant absorption capacity.
    The present invention relates to a process for refining fats and oils suitable for, but not limited to, edible consumption. The method comprises supplying a liquid stream of grease or oils to a semi-continuous deodorizer, collecting the liquid in a buffer tray for supply to a stripping section at a certain point in the operating schedule, controlling the flow of liquid from the buffer tray for supply to regulating means. the cross-sectional section of a structured gasket for extended contact with the stripping means, the stripping means, in countercurrent, to collect the liquid from the structured gasket in a receiving trough before leaving the stripping section, the stripping section.
    The typical application involves contacting the liquid with countercurrent stripping agent during the heating phase before stripping takes place, and further contacting the stripping agent after leaving the stripping section. The method may further comprise supplying the liquid from the stripping section to a second stripping section or supplying the liquid from the stripping section to one or more trays of mammoth pumps for further contact with stripping gas or stripping inlet, or supplying the liquid from the stripping section to combinations of stripping sections and trays. which has mammoth pumps.
    The present invention further relates to a process for reusing stripping agents, in a semi-continuous deodorizer. The method comprises collecting stripping agent used once from one or more trays or stripping sections and directing this flow through a supply pipe to a section where the collected streams of stripping agent are brought into contact with the flow of liquid in countercurrent before the twice used streams of stripping agent. removed.
    The present invention also relates to the use of a semi-continuous deodorizer for refining edible fats and oils. Fats and oils are classified in this invention as, but not limited to, palm oil, palm kernel oil, coconut oil, tallow, lard, soybean oil, rapeseed oil, cottonseed oil, corn oil, sunflower oil, thistle oil, rice oil, olive oil, coconut butter, salt fat, shea butter, butter, fish oils, peanut oil, camellia oil, various kinds of exotic fats and oils, as well as oil derivatives such as alkane esters, ethyl or methyl esters, etc.
    The grease material in the vapors can be recovered by condensation, usually in a scrubber device. Since the composition of the distillate obtained according to the invention, in contrast to distillates obtained from today's deodorizers, for a certain time consists almost exclusively of volatiles from a batch of oil which is then treated in the stripping section, the distillate can be divided into different types depending on the type. oil. Separation of high purity fatty acid distillate can thus be obtained by coordinating the effluent from the distillate circuit and switching to a container when a product change takes place in the liquor section.
    In the following, the invention will be described in more detail with reference to Figures 1 to 4. The figures are intended to describe the invention and are not intended to limit its scope.
    Brief Description of the Figures Figure 1 shows a semi-continuous deodorizer according to the invention without a vacuum tube connection.
    Figure 2 shows the collection and countercurrent reuse of stripping agents that have been used once.
    Figure 3 shows two sets of heat exchanger systems according to the invention.
    Figure 4 shows the interior of a heat exchanger system in the form of spiral loops.
    Detailed Description of the Figures Figure 1 shows a semi-continuous deodorizer according to the invention. In this figure, the deodorizer has a stripper section. The stripper section comprises a buffer trough 1 for supplying the liquid flow, a fate regulating means 2, a liquid distributor 3, structured packing 4, and a receiving trough 5. The liquid is collected in the buffer trough 1 from which it wishes, with a controlled flow rate regulated by the control means 2. supplied to the distributor 3. The flow rate is adjusted to provide the best possible balance between wetting of the gasket and film thickness.
    The distributor 3 provides an even distribution over the cross section of the structured gasket 4. The film thereby provides an improved contact with the mass between the liquid and the stripping agent, and improves the transfer from liquid to gas phase. The treated liquid is then collected in a receiving vessel 5 from which it can be emptied into further trays for further treatment.
    Figure 1 also shows that the deodorizer can have trough 6 with mammoth pumps. The heat transfer in the deodorizer can be performed with any kind of heat exchanger system. In this figure, the heat transfer is carried out with troughs equipped with bundles 7a and 7b of U-pipes.
    The bundles of U-tubes are either vertical 7a or horizontal 7b according to the invention. The heat exchanger troughs can be selected from troughs that have bundles of U-tubes or troughs that have spiral loops, are not shown in the figure, or combinations of troughs that have bundles of U-tubes and troughs that have spiral loops are not shown in the figure either. Connected at the top of the bundles of U-pipes are compensating means 8a and 8b. The compensating means 8a and 8b are either in a vertical position 8a or in a horizontal position. The position of the compensating means depends on the fluid level, space, etc.
    Figure 2 shows how the once used stripping agent can be collected and reused in the structured gasket 4. The used stripping agent leaving each tray via individual external conduits 9 is collected in a central conduit 10. From the conduit 10 the stripping agent flows into the structured gasket 4 through line 11 and is contacted once more with the liquid flow, this time in countercurrent. The stripping flow is led out through the line 12.
    Figures 3A and 3B show two kinds of arrangements of U-tubes 13 and how the U-tubes are connected to each other in two different arrangements. Figure 3A is a vertical arrangement of U-pipes connected in parallel. Figure 3B shows a horizontal arrangement of U-pipes. Two distributing means 14 and 15 are connected to the U-pipes 13, one at the inlet and one at the outlet. The distributing means are connected in series in Figure 3B, this means that an outlet means is connected to an inlet means via an external pipe 16, and that the inlet means is connected to the inlets of the U-pipes, which U-pipes are connected with an outlet means and so on.
    Figure 3B also shows that pipes 17 for stripping gas or for stripping steam can be arranged under the U-pipes 13 and these pipes are guided through support means 18.
    Figure 3A shows how two branch pipes 19 connect the U-pipes in parallel. The U-tubes are flexibly arranged by support means 18 and flexible means 20 such as rods, chains, wires, or combinations thereof. Between the support means, the upper support means are not shown in these figures, it is arranged so that the U-tubes can move and expand with the temperature. The U-tubes are also flexibly guided through spacers 21 with holes.
    Figure 4 shows an alternative arrangement of heat transfer means in a heat exchanger system. The internal members of this figure are in the form of helical loops 22. The helical loops, evenly packed in the form of double helical loops shown in this figure, deliver less installed heat transfer area per volume than the U-tubes. The individual spiral loops are connected through the connections 23 and 24 parallel to each other to the two distributing members 25 and 26. The flow direction depends on the application. Figure 4 also shows that pipes 17 for stripping gas or for stripping steam can be arranged under the spiral loops. In larger diameter heat exchanger trays, the coil loops may be located in two concentric rings within the trough to provide a larger heat transfer surface, this is not shown in Figure 4.
    权利要求:
    Claims (12)
    [1]
    A semi-continuous deodorizer comprises at least one stripping section, characterized in that the stripping section comprises a buffer tray (1) for supply for collecting grease and / or oils, a flow regulating means (2) for regulating the flow of fats and / or oils from the buffer tray ( 1) for supply, a liquid distributor (3) for distributing the flow of fats and / or oils over a structured gasket (4), and a receiving trough (5) for collecting the flow of fats and / or oils from the structured gasket (4). ).
    [2]
    The semi-continuous deodorizer according to claim 1, characterized in that the semi-continuous deodorizer further comprises one or more combinations of troughs having mammoth pumps (6) and stripping sections.
    [3]
    The semi-continuous deodorizer according to claim 1, characterized in that the semi-continuous deodorizer comprises two or more stripping sections.
    [4]
    The semi-continuous deodorizer according to any one of claims 1 to 3, characterized in that the semi-continuous deodorizer also comprises one or more heat exchanger systems, and the heat exchanger system is selected from one or more systems from the group containing vertical bundles of U-tubes, horizontal bundles of U-tubes. pipes, helical loops, circular heat exchanger tubes or other designs of heat transfer means suitable for the task at hand.
    [5]
    The semi-continuous deodorizer according to claim 4, characterized in that at least one heat exchanger system is located in the lower part of the semi-continuous deodorizer and at least one system is located in the upper part of the semi-continuous deodorizer and that the systems are connected to each other by pipes or conduits for returned heat transfer fluids.
    [6]
    The semi-continuous deodorizer according to any one of the preceding claims, characterized in that the semi-continuous deodorizer also comprises one or more internal wires or one or more external wires (9,10) or combinations of internal wires and external wires (9,10) for stripping agents and volatiles.
    [7]
    The semi-continuous deodorizer according to claim 6, characterized in that the conduit (10) is arranged to collect the flows of stripping agent from one or more trays and the conduit (10) is connected to a conduit (11) from the stripping sections for reuse of the stripping agent in countercurrent. .
    [8]
    A process for refining fats and / or oils comprises supplying a flow of fats and / or oils to a semi-continuous deodorizer, characterized in that the process comprises the following steps i) collecting fats and / or oils in a buffer trough (1) for supply in a stripping section, ii) - regulating the flow of fats and / or oils from the buffer tray (1) for supply with control means (2) iii) distributing the flow of fats and / or oils over the structure (4) for improved surface contact with the stripping agent in countercurrent flow, toured the gasket iv) collecting the flow of fats and / or oils from the structured gasket (4) in a receiving trough (5) before leaving the stripping section for further processing including contact with the stripping agent, which is preferably collected and reused in the stripping section.
    [9]
    The method according to claim 8, characterized in that the method further comprises supplying the flow of fats and / or oils from the stripping section to a second stripping section or supplying the flow of fats and / or oils from the stripping section to one or more trays with mammoth pumps (6) installed for further contact with the stripping gas or stripping vapor, or supplying the flow of fats and / or oils from the stripping section to combinations of stripping sections and troughs having mammoth pumps (6).
    [10]
    The method according to claim 8 or 9, characterized in that the method further comprises performing separation of high purity fatty acid distillate by coordinating emptying of the distillate circuit and changing the reception when a product change takes place in the stripping section.
    [11]
    A method for enabling extended contact between the stripping agent and the product in a semi-continuous deodorizer according to any one of claims 1 to 7, characterized by collecting the flows of stripping gas or stripping vapor from one or more trays or sections via internal or external lines (9, 10). ), conducting the collected once used streamer streams through a conduit (11) to one or more stripping sections, contacting the collected streamer streams used with the countercurrent product streams before depleting the stripping streams used through the conduit (12). ) for further treatment.
    [12]
    Use of a semi-continuous deodorizer according to any one of claims 1 to 7 for the refining of edible fats and oils such as palm oils, seed oils and nut oils, special batches containing significant concentrations of free fatty acids or volatile components to be driven by, such as exposed oils for the physical refining method.
    类似技术:
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    同族专利:
    公开号 | 公开日
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    US20120245372A1|2012-09-27|
    BR112012002299A2|2016-06-14|
    US9114329B2|2015-08-25|
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    CN102470284B|2016-10-05|
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    RU2012108733A|2013-09-20|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    SE0950585A|SE534944C2|2009-08-12|2009-08-12|A semi-continuous deodorizer comprising a structured gasket|SE0950585A| SE534944C2|2009-08-12|2009-08-12|A semi-continuous deodorizer comprising a structured gasket|
    RU2012108733/04A| RU2499626C2|2009-08-12|2010-07-15|Semi-continuous deodorant with structured packing|
    BR112012002299-7A| BR112012002299B1|2009-08-12|2010-07-15|Semi-continuous deodorizer and method to enable increased contact between fractionating agent and product in a semi-continuous deodorizer|
    PCT/SE2010/050845| WO2011019315A2|2009-08-12|2010-07-15|A semi-continuous deodoriser comprising a structured packing|
    CN201080036215.9A| CN102470284B|2009-08-12|2010-07-15|Including the semicontinuous deodorizer of structured packing|
    US13/389,339| US9114329B2|2009-08-12|2010-07-15|Semi-continuous deodoriser comprising a structured packing|
    MYPI2012000581A| MY161611A|2009-08-12|2010-07-15|A semi-continuous deodoriser comprising a structured packing|
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