摘要:
The invention relates to a method for start-up and operation of a Fischer-Tropsch reactor comprising the steps of: providing a reactor with a fixed bed of Fischer-Tropsch catalyst precursor that comprises cobalt as catalytically active metal; supplying an initial hydrogen containing gaseous feed stream to the reactor, at a reduction temperature and pressure; supplying a further gaseous feed stream comprising carbon monoxide and hydrogen to the reactor; converting carbon monoxide and hydrogen supplied with the second gaseous feed stream to the reactor into hydrocarbons at a reaction temperature, wherein the reaction temperature is set at a value of at least 200° C. and hydrocarbons are produced.
摘要:
A start-up method for a hydrocarbon synthesis reaction apparatus, comprising: an initial slurry-loading step in which the slurry is loaded into the reactor at the initial stage of the Fischer-Tropsch synthesis reaction at a lower loading rate than that applied to the reactor in a steady-state operation; and a CO conversion ratio-increasing step in which the liquid level of the slurry in the reactor is raised by adding to the slurry the hydrocarbons synthesized at the early stage of the Fischer-Tropsch synthesis reaction so that the CO conversion ratio is increased in proportion to a rise in the liquid level of the slurry in the reactor.
摘要:
Verfahren zur Erzeugung von Energie durch einen Verbrennungsprozess mit vermindertem CO 2 -Ausstoß, bei dem zum Start ein fossiler Brennstoff unterstöchiometrisch verbrannt wird, das dabei entstehende Kohlenmonoxid in einem katalytischen Syntheseverfahren mit unabhängig vom Verbrennungsprozess erzeugtem Wasserstoff in einen kohlenwasserhaltigen Brennstoff umgewandelt wird, und anschließend der Verbrennungsprozess mit optionaler Zuführung weiterer fossiler Brennstoffe durch Verbrennung des vorher erzeugten kohlenwasserstoffhaltigen Brennstoffs in einem Reaktionskreislauf weitergeführt wird.
摘要:
The hydrocarbon production apparatus is provided with a gas-liquid separator for cooling gaseous state hydrocarbons drawn out from a gas phase portion of a reactor for the Fischer-Tropsch synthesis reaction and liquefying a portion of the hydrocarbons. A light liquid hydrocarbon supply line for supplying light hydrocarbons is disposed between a downstream side line which is downstream from the last stage of a gas-liquid separating unit of the gas-liquid separator, and an upstream side line which is upstream from the last stage of the gas-liquid separating unit of the gas-liquid separator, wherein the downstream side line is a liquid hydrocarbon line on the downstream side through which the light hydrocarbons having cloud points lower than the temperature at an outlet of a cooler in the last stage of the gas-liquid separating unit are flowed.
摘要:
The method for cleaning a reactor of the present invention comprises passing a solvent through a wax-fraction hydrocracking apparatus which is charged with a catalyst and to which supply of a wax fraction is stopped, wherein the solvent comprising at least one oil selected from a group consisting of hydrocarbon and vegetable oils, and having a sulfur content of less than 5 ppm and being in a liquid state at 15°C.
摘要:
A method for starting-up a naphtha fraction hydrotreating reactor which subjects a naphtha fraction obtained in a fractionator by fractional distillation of hydrocarbon compounds produced by a Fischer-Tropsch synthesis reaction to hydrotreating, the method comprising: charging in advance an inactive hydrocarbon compound corresponding to the naphtha fraction into a vapor-liquid separator to which hydrogenated naphtha, which has been subjected to hydrotreating in the naphtha fraction hydrotreating reactor, is transferred; mixing the inactive hydrocarbon compound drawn from the vapor-liquid separator and the naphtha fractions being transferred from the fractionator to the naphtha fraction hydrotreating reactor; and supplying a mixture of the naphtha fractions and the inactive hydrocarbon compound to the naphtha fraction hydrotreating reactor.
摘要:
The start-up period of a Fisher-Tropsch process reactor is substantially reduced by introducing the feed at a rate from 30 to 100% of total flow-rate at the lined-out conditions, the hydrogen rate being from 15 to 90% of the hydrogen rate at lined-out operation and the mol ratio H 2 /CO not exceeding 90% of the mol ratio at lined-out conditions, raising the pressure or the pressure and temperature until either the space-time-yield of products corresponds with the lined-out yield or the pressure and temperature are those at lined-out conditions, and then increasing the mol ratio of H 2 /CO to that employed at lined-out conditions.
摘要:
A start-up method of a fractionator which fractionally distills FT synthesized hydrocarbons produced by the Fischer-Tropsch synthesis reaction, the method includes: discharging light FT synthesized hydrocarbons which exist in a gaseous state in an FT reactor performing the Fischer-Tropsch synthesis reaction from the FT reactor to the outside; cooling down the light FT synthesized hydrocarbons discharged from the FT reactor for liquefaction; supplying the liquefied light FT synthesized hydrocarbons to the fractionator; and heating the light FT synthesized hydrocarbons and circulating the light FT synthesized hydrocarbons to the fractionator.
摘要:
The invention relates to a continous process for converting carbonaceous material contained in one or more feedstocks into a liquid hydrocarbon product, said feedstocks including the carbonaceous material being in a feed mixture including one or more fluids, said fluids including water, the process comprising:converting at least part of the carbonaceous material, and further in a state of cleaning the pressure and temperature is set to a predetermined desired level; where prior to the cleaning, the inflow of feed mixture is terminated and the system is filled with a fluid, where the temperature and the pressure are altered to the predetermined level at a predetermined rate and where the pressure is constantly kept at a level above the saturation pressure for the fluid at a given temparature, where the inflow of at least one cleaning fluid is initiated and the at least one cleaning fluid is circulated in the system for a predetermined time; where upon reaching the predetermined time for the cleaning fluid circulation, the temparature and pressure is altered to the operational pressure and temperature at a predetermined rate, where the pressure is constantly kept at a level above the saturation pressure for the fluid at a given temperature; and where upon reaching the operational conditions the inflow of the fluid/cleaning fluid is terminated and the inflow of feed mixture is initiated.