摘要:
A slurry bubble column reactor with a gas distribution arrangement comprising an upper sparger, a lower sparger, and an open-ended tube. Gas from the lower sparger enters the tube and lowers the density of slurry in the tube. The difference in slurry density causes the slurry in the tube to rise, causing slurry outside the tube to move down, maintaining circulation and flushing catalyst from the vessel wall.
摘要:
Polymerization reactor systems providing real-time control of the average particle size of catalyst system components are disclosed. Methods for operating such polymerization reactor systems also are described.
摘要:
A catalytic hydrocracking reactor vessel includes enhanced components for the conversion of a hydrogen gas and fossil fuel feedstream to light liquid hydrocarbons. The reactor vessel comprises one or more of a reactor cup riser with a helical cyclonic separator conduit for separating a liquid and vapor product stream to provide an essentially vapor-free liquid recycle stream; a grid plate bubble cap with wall housing having serrated edges for producing small hydrogen bubbles of increased total surface area of bubbles at lower pressure drop; a feedstream inlet pipe sparger containing rows of downward directed slots for even distribution of the feedstream across the cross-sectional area of the reactor and providing free drain of solid particles from the sparger; and optionally a liquid recycle inlet distributor containing vertically curved plates for creating a whirling motion in the liquid recycle stream for better mixing with the feedstream with minimal solids settling.
摘要:
A setting leg for a polymerisation reactor connected to the lower part of the loop reactor (1). A conduit (2) is welded to the loop reactor and leads to upper valve (3) and lower block valve (4). Downstream of the lower block valve (4) is a further conduit (5) which leads to a lower region (6) and to a product take off (PTO) valve 7. Conduit (5) has a significantly greater cross-sectional area than conduit (2). In use, the block valves (3) and (4) are always open to allow slurry from the reactor loop to enter the settling leg. The PTO valve (7) is regularly opened to allow the settled polyethylene “fluff” to be rapidly expelled along conduit (8). The greater area of conduit (5) significantly increases the settling rate ad polymer concentration of the polyethylene “fluff”.
摘要:
A process for preparing a polyolefin, including polymerizing olefins in the presence of an antistatic agent made from or containing an alkylene oxide derived polymer made from or containing in average from about 10 to about 200 repeating units —(CH2—CHR—O)— with R being hydrogen or an alkyl group having from 1 to 6 carbon atoms, wherein the alkylene oxide derived polymer is a random copolymer of ethylene oxide and other alkylene oxides and a ratio of n:m is in the range of from 6:1 to 1:1, wherein (n) is the average number of repeating units —(CH2—CH2—O)— derived from ethylene oxide and (m) is the average number of repeating units —(CH2—CHR′—O)— derived from the other alkylene oxides with R′ being an alkyl group having from 1 to 6 carbon atoms, and the end groups of the alkylene oxide derived polymer are —OH groups.
摘要:
The invent on relates to a device for producing starting materials, combustible suhstances and fuels from organic substances. Said device comprises a reactor (10) that comprises a feeding device (11) for the organic substances, a discharge device (12) tor the reaction products, and a device (13) for supplying reaction energy for the transformation of organic substances into the reaction products. The invention is characterised in that the reactor (10) comprises a device (14) for forming a circulating now inside the reactor.
摘要:
A catalytic hydrocracking reactor vessel includes enhanced components for the conversion of a hydrogen gas and fossil fuel feedstream to light liquid hydrocarbons. The reactor vessel comprises one or more of a reactor cup riser with a helical cyclonic separator conduit for separating a liquid and vapor product stream to provide an essentially vapor-free liquid recycle stream; a grid plate bubble cap with wall housing having serrated edges for producing small hydrogen bubbles of increased total surface area of bubbles at lower pressure drop; a feedstream inlet pipe sparger containing rows of downward directed slots for even distribution of the feedstream across the cross-sectional area of the reactor and providing free drain of solid particles from the sparger; and optionally a liquid recycle inlet distributor containing vertically curved plates for creating a whirling motion in the liquid recycle stream for better mixing with the feedstream with minimal solids settling.
摘要:
A setting leg for a polymerization reactor connected to the lower part of the loop reactor (1). A conduit (2) is welded to the loop reactor and leads to upper valve (3) and lower block valve (4). Downstream of the lower block valve (4) is a further conduit (5) which leads to a lower region (6) and to a product take off (PTO) valve 7. Conduit (5) has a significantly greater cross-sectional area than conduit (2). In use, the block valves (3) and (4) are always open to allow slurry from the reactor loop to enter the settling leg. The PTO valve (7) is regularly opened to allow the settled polyethylene “fluff” to be rapidly expelled along conduit (8). The greater area of conduit (5) significantly increases the settling rate ad polymer concentration of the polyethylene “fluff”.
摘要:
A hydrocarbon wax product from a HCS slurry comprising liquid synthesis product and catalyst particles is purified by circulating the slurry from a synthesis zone with a first temperature through a treatment zone with a second temperature in which a hydrogen-containing treatment gas contacts the slurry. The gas treatment removes impurities from the hydrocarbon wax product and also removes catalyst de-activating species which may be present in the slurry. Purified wax product is separated and removed from the treated slurry via wax withdrawal means. This avoids or minimizes the need for further treating the wax product. Remaining treated slurry may be returned to the synthesis zone.
摘要:
The invention relates to a three phase separator which comprises a compartment for the substantial separation of the gas-phase, this compartment being equipped with at least one partition which is applied for an internal gaslift circulation.