55results about How to "Improve light oil yield" patented technology

The present invention relates to a cracking catalyst containing laminar clay. It is prepared by adopting the following steps: mixing the expandable clay modifying component, pseudo-thin hydrargillite and water, pulping for 0.1-10 hr. to obtaining a slurry liquor, ageing slurry liquor for 0.1-10 hr. at 50-85 deg.C, drying, forming, washing with water, ageing, finally drying and roasting so as to obtain said catalyst. The described modifying component can be selected from one or several kinds of hydroxyl polymers of silicon, aluminium, zirconium or titanium or one or several kinds of one or several substances containing the described hydroxyl polymer. Said catalyst has higher heavy oil conversion capacity.

The invention relates the method for improving atmospheric and vacuum distillation light oil productivity. The method comprises the following step: adding the 0.001-0.1wt% addition agent with colophony into crude oil in atmospheric and vacuum distillation tower. The addition agent comprises 50-80% colophony and 50-20% organic solvent. The pH is 7.0-7.5. The organic solvent comprises ethanol or cellosolve or ethyl propyl acetone or acetate cellosolve. The method can be used in oil-extraction plant, and the light oil productivity is improved by 1.5-2.3wt%.

A fuel oil, aromatic hydrocarbon oil and asphalt combined production process is as follows: catalytic oil slurry or a mixed raw material stored in a raw material tank is conveyed into a buffer tank by a pump, then sent to a heating furnace for heating, and then enters a visbreaking reactor for thermal cracking reaction, after the reaction, reaction products enter into a vacuum distillation tower for separation, solvent oil, and by-product gas, fuel oil, aromatic hydrocarbon oil, and asphalt are successively obtained in the top line, the side line and the tower bottom of the vacuum distillation tower, the solvent oil, the fuel oil, the aromatic hydrocarbon oil and the asphalt with high added value and high market demand can be produced, the comprehensive utilization efficiency of catalytic oil slurry can be improved; at the same time, the light oil yield of the catalytic oil slurry can be significantly increased, content the aromatic hydrocarbon oil can be significantly improved, asphalt product aromaticity can be improved, aromatic hydrocarbon oil and asphalt quality can be improved, the process is simple, the operation condition is easy to control, and large-scale production is easy to realize.

The invention provides a method for improving the shale oil hydrorefining denitrification rate, and relates to a whole fraction shale oil hydro-denitrification process. The method aims at solving the technical problems that in the existing method for producing diesel oil through shale oil hydrorefining, the stability of a diesel oil product is low, and the operation running period of a hydrorefining catalyst is short. According to the method, a raw material pretreatment unit 1, a raw material pre-fractionation unit 2, a primary hydrorefining reaction unit 3, a secondary hydrorefining reaction unit 4 and a product fractionation unit 5 are used. When the method provided by the invention is used for processing shale oil, the light oil yield is high; the nitrogen content of the diesel oil product is low; the chromaticity and the stability conform to national V standard requirements; the goal of light oil product deep denitrification can be achieved; the service life of the hydrorefining catalyst is prolonged; the operation running period of the catalyst is improved. A main product of the method is hydrorefining diesel oil; byproducts are high-value LPG and hydrogenated naphtha; heavy shale oil and hydrogenation tail oil thrown out in the technical process can be further processed and used in a downstream device. The method provided by the invention belongs to the field of whole-fraction shale oil deep processing.

The invention relates to aluminum oxide and a preparation method and application thereof. The aluminum oxide has a crystal phase structure of gamma-aluminum oxide, and the crystallinity of the gamma-aluminum oxide is 40-60%; based on the volume of the pores of 2-100 nm, the pore volume of the pores of 2-5 nm accounts for 0-10%, the pore volume of the pores greater than 5-10 nm accounts for 10-25%,the pore volume of the pores of greater than 10-100 nm accounts for 65-90%, and the probable pore diameter is 10-25 nm; and the ratio of the acid B to the acid L is 0.06-0.1. The preparation method comprises the following steps: treating a mixture containing two aluminum oxide sources and a pore-enlarging agent in a certain proportion in a water vapor atmosphere, and roasting. The aluminum oxideis used for preparing a catalytic cracking catalyst, has a better inferior oil conversion effect, and can have higher gasoline yield and lower coke yield.

The invention discloses a preparation method for a metal deactivator applied to catalytic cracking and the metal deactivator prepared by using the same. The preparation method comprises the followingsteps: a, mixing antimony trioxide, hydroxycarboxylic acid, a boron-containing compound, a bismuth-containing compound, a pH value conditioning agent and water and carrying out a reaction at a temperature of 20 to 90 DEG C for 30 to 60 min so as to obtain a first product; and b, mixing an oxidizing agent with the first product obtained in the step a, and carrying out a reaction in an enclosed container at a temperature of 100 to 150 DEG C for 1 to 2 h so as to obtain the metal deactivator applied to catalytic cracking. The preparation method for the metal deactivator applied to catalytic cracking has the advantages of simple process, short reaction time, low cost and reduction in energy consumption, and produces substantial economic benefits. The metal deactivator prepared by using the method has a good nickel and vanadium passivation function when applied to a catalytic cracking reaction and can obviously increasing the yield of light oil and reducing the proportions of coke and dry gas in a product.

The invention provides a method for preparing a composite molecular sieve. The method comprises steps as follows: an aqueous solution of alkali and a molecular sieve are impregnated and mixed uniformly in a mass ratio of the molecular sieve (dry basis), alkali and H2O being (0.1-1):(0.01-1):(0.5-5), a solid mixture obtained by the impregnation is subjected to or not subjected to drying pretreatment and then is crystallized for 0.1-120 h at the temperature of 50-250 DEG C, and a composite molecular sieve product is obtained. According to the method, the Y molecular sieve is subjected to alkalitreatment, partial skeleton structure of the molecular sieve is dissolved properly, and content of secondary pores of the Y molecular sieve is increased. Meanwhile, silicon aluminum species dissolvedfrom the molecular sieve skeleton and residual alkali liquor further interact and are subjected to nucleation and crystallization again under a certain hydrothermal condition, and the nano ZSM-5 molecular sieve is generated. The USY / ZSM-5 composite molecular sieve has higher heavy oil conversion capacity, higher light oil yield and higher low-carbon olefin selectivity when applied to the heavy oilcracking reaction.

The invention discloses a catalytic cracking catalyst, and a preparation method and application thereof. The catalytic cracking catalyst contains a cracking active composition, a mesoporous silicon aluminium material, clay and a binder, wherein the cracking active composition contains 70-100 wt% of a first Y type molecular sieve, and the first Y type molecular sieve is a rare earth Y type molecular sieve; the binder is a modified aluminium sol containing Cl and Si, and by taking the total weight of the modified aluminium sol as a reference, Al content is 8-13 wt%, Cl content is 4-9 wt%, the Al-to-Cl weight ratio is 1.2-2.2:1, the Si content is 0.1-1 wt%, and the pH value of the modified aluminium sol is 2.2-5.2. The catalytic cracking catalyst possesses relatively low coke selectivity and relatively high catalytic cracking activity during catalytic cracking of heavy oil, and also helps to obtain relatively high light oil yield.