摘要:
Disclosed is a method for determining when to replace a guard bed material used to remove one or more catalyst poisons from a feed based on a parameter change in a process. A guard bed having a guard bed material is in fluid communication with a catalyst bed having a catalyst. At least three monitors are positioned in said guard bed or said catalyst bed and at least one parameter of the guard bed or catalyst bed is monitored. A feed component comprising one or more catalyst poisons is supplied to said guard bed or said catalyst bed. The feed is contacted with said guard bed material or said catalyst to remove at least a portion of a catalyst poison and to form a product which produces an increase or a decrease in said parameter. The monitored parameters are compared to determine when to replace the guard bed material.
摘要:
The present invention relates to a process for selective removal of mercaptan from aviation turbine fuel (ATF) feed comprising: mixing aviation turbine fuel feed with hydrogen, at a pressure in range of 3 bar to 20 bar to obtain a reaction mixture, heating the reaction mixture at a temperature range of 150 °C to 350 °C to obtain a heated mixture, reacting the heated mixture with a hydrotreating catalyst in a rector to obtain a reactor effluent, stripping H2S gas from the reactor effluent to obtain a stripper bottom product, and removing moisture from the stripper bottom product to obtain aviation turbine fuel product having less than 10 ppm mercaptan. The process of present invention also improves properties such as colour, acidity etc of other products. The present invention further relates to an aviation turbine fuel product having less than 10 ppm mercaptan prepared by a process of the present invention. The process of present invention is flexible and can be employed for a grass root unit or retrofitting-existing unit.
摘要:
A diesel fuel composition comprising a (1) sulfur content of less than 10 ppm; (2) a flash point of greater than 50°C; (3) a UV absorbance, Atotal, of less than 1.5 as determined by the formula comprising Atotal= Ax +10(Ay) wherein Ax is the UV absorbance at 272 nanometers; and wherein Ay is the UV absorbance at 310 nanometers; (4) a naphthene content of greater than 5 percent; (5) a cloud point of less than -12°C; (6) a nitrogen content of less than 10 ppm; and (7) a 5% distillation point of greater than 300 F and a 95% distillation point of greater than 600F.
摘要:
The invention relates to a process and an apparatus for producing gasoline components from C 5 -C 10 unsaturated cyclic and acyclic hydrocarbons in a single step in the presence of a catalyst system comprising a dewaxing catalyst. The components obtained by the process are suitable for gasoline components as such or as an additive in gasoline compositions, and in cosmetics or pharmaceutical products.
摘要:
La presente invenciόn se relaciona con el proceso de ruptura catalitica orientado a Ia obtenciόn de una mayor cantidad de aceite liviano de ciclo ALC a partir de residuos pesados del petrόleo, tales como fondos de vacio desasfaltados conocidos como aceites DMO.
摘要:
A process for desulphurising hydrocarbons is described comprising the steps of (i) passing a mixture of hydrocarbon and hydrogen over a hydrodesulphurisation catalyst to convert organosulphur compounds present in said hydrocarbon to hydrogen sulphide, (ii) passing the resulting mixture over a hydrogen sulphide sorbent comprising zinc oxide to reduce the hydrogen sulphide content of the mixture and (iii) passing the hydrogen sulphide-depleted mixture over a further desulphurisation material, wherein the further desulphurisation material comprises one or more nickel compounds, a zinc oxide support material, and optionally one or more promoter metal compounds selected from compounds of iron, cobalt, copper and precious metals, said desulphurisation material having a nickel content in the range 0.3 to 20 % by weight and a promoter metal content in the range 0 to 10% by weight.
摘要:
Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to paraffins useful as liquid fuels The process involves the conv ersion of water soluble oxygenated hydrocarbons to oxygenates, such as alcohols, furans, ketones, aldehydes, carboxylic acids, diols. triols. and/or other polyols, followed by the subsequent conversion of the oxygenates to paraffins by dehydration and alkylalion. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass.