58results about How to "Improve product distribution" patented technology

The present invention discloses a hydrocarbon oil convert method, wherein the method includes the following procedures: under cracking condition, contact hydrocarbon oil with energizing agent in a reactor to obtain reaction product and spent catalyst; separate the reaction product and spent catalyst, and contact the spent catalyst with water vapor and oxygen-containing gas inside a gasifying stove to obtain forming gas and semi-regenerated catalyst; separate the forming gas with the semi-regenerated catalyst, and transmit at least part of the semi-regenerated catalyst into the reactor for periodic duty, wherein reaction temperature inside the gasifying stove is from 500 DEG C to lower than 800 DEG C. The hydrocarbon oil convert method provided in the invention makes spent catalyst contactwith water vapor and oxygen-containing gas in the temperature from 500 DEG C to lower than 800 DEG C, and that can increase production quantity of carbon monooxide and hydrogen; carbon monooxide can be converted to hydrogen in the following course of working to obtain higher hydrogen rate of production; the energizing agent that regenerated in the temperature from 500 DEG C can improve hydrogen rate of production and improve product distribution of hydrocarbon oil reaction product.

The invention relates to a catalytic cracking catalyst and a preparation method. The catalytic cracking catalyst contains a cracking activity component, clay and an adhesive, wherein the cracking activity component a first Y-type molecular sieve, a second Y-type molecular sieve and a third Y-type molecular sieve; the first Y-type molecular sieve is a rare-earth Y-type molecular sieve, the rare-earth content in the first Y-type molecular sieve is 10-25 wt% on the basis of rare-earth oxides, the cell constant is 2.440-2.472nm, the crystallinity is 35-65%, the silicon/aluminum atomic ratio in the framework is 2.5-5.0, and the product of the ratio (I1/I2) of 2theta=11.8+/-0.1 degree peak intensity I1 to 2theta=12.3+/-0.1 degree peak intensity I2 in an X-ray diffraction pattern and the rare-earth weight percent in the molecular sieve on the basis of rare-earth oxides is greater than 50; the second Y-type molecular sieve is a rare-earth-containing gas-phase overstable Y-type molecular sieve; and the third Y-type molecular sieve is a rare-earth-containing DASY molecular sieve. The preparation method comprises the following steps: preparing a slurry containing the cracking activity component, adhesive and clay, and carrying out spray drying. The catalyst has higher conversion rate and gasoline yield, and can reduce the consumption of the molecular sieves, thereby lowering the cost.

The invention discloses an improved hydrotreatment and catalytic cracking combination method for hydrocarbon oil, which comprises the following steps that: under reaction conditions of the presence of hydrogen and the hydrotreatment, the contact reaction of residual oil, catalytic cracking cycle oil, optional distillate oil and a hydrotreating catalyst is performed, and gas, hydrogenerated naphtha, hydrogenerated diesel oil and hydrogenerated tail oil are obtained after a reaction product is separated; under catalytic cracking reaction conditions, the contact reaction of the optional conventional catalytic cracking raw oil, the hydrogenerated tail oil and a catalytic cracking catalyst is performed, and dry gas, liquefied gas, catalytic cracking gasoline, catalytic cracking diesel oil and catalytic cracking cycle oil are obtained after a reaction product is separated; and the conventional catalytic cracking raw oil is light or heavy distillate oil, and the contact reaction with the catalytic cracking catalyst is that the heavy raw oil and light raw oil are optionally and orderly performed along with the hydrogenerated tail oil in a reactor comprising at least two reaction regions (I and II) along the flowing direction of reaction materials respectively. The method is suitable for hydrocarbon oil conversion to produce more gasoline and diesel oil.

The present invention discloses a catalytic cracking desulfurization method of low-grade gasoline in the field of petroleum processing technology and its equipment. It is characterized by that the invented gasoline upgrading reactor adopts gasoline fast bed reactor with cylindrical structure, a portion of spent catalyst can be passed through spent catalyst coveying pipeline with flow control valve and fed into catalyst mixer, and is mixed together with regenerated catalyst coming from regenerator under the action of aqueous vapor, then fed into gasoline fast bed reactor and is contacted with low-grade gasoline feed so as to make reaction to greatly reduce sulfur content of low-grade gasoline.

The invention provides coupling equipment for realizing the temperature adjustment and the stripping of catalytic cracking regenerant, which comprises a temperature adjustment section arranged at the upper part and a stripping section arranged at the lower part; the temperature adjustment section is provided with a built-in heat exchange component and at least an air distributor; and the temperature adjustment section extends downwards and reduces the circulation area to form the stripping section. By coupling the stripping area with quite small circulation area at the lower part of the temperature adjustment section, the invention can realize the function of flue gas removal without or only with a small amount of stripping steam, and can best inhibit the inactivation of the regenerant under the steam atmosphere. The coupling equipment of the invention can be arranged in a regenerant circulating pipeline of a catalytic cracker, so that the regenerant directly enters a rise reactor after the temperature is adjusted and the flue gas is removed, thereby not only significantly improving the oil ratio, the regeneration temperature and the raw material pre-heating temperature of the catalytic cracker and facilitating the improvement of product distribution, but also having the function of glue gas removal and reducing the load of a rich gas compressor and the energy consumption of the device.

A directional catalytic thermocracking reaction for non-oxygen direct conversion of low-carbon alkane includes reaction between the preheated heavy petroleum hydrocarbon and hot cracking catalyst from the first generator in the first reactor to obtain the oil gas and carbon deposited catalyst, stripping the catalyst, regenerating in the first generator, delivering the oil gas in the following product separation system, feeding low-carbon alkane in the second reactor, reacting on the aromatizing catalyst from the second regenerator to obtain arylhydrocarbon and H2, regenerating the catalyst, and separating arylhydrocarbon from H2.

The invention relates to an ethylene oligomerization catalyst. The ethylene oligomerization catalyst comprises a main catalyst represented by general formula (I) shown in the description and an aluminum-containing cocatalyst; in the formula (I), one of A, B and D is S, the remaining two of A, B and D are independently selected from CR<1> and CR<2>; the R<1> and the R<2> are same or can be different, and are respectively selected from hydrogen, an alkyl group, a cycloalkyl group and halogen, and atoms in the alkyl group and the cycloalkyl group are optionally substituted with hetero atoms or are not substituted; and Ar is an aryl group or a substituted aryl group. The catalyst provided by the invention has the advantages of good oligomerization activity and good product distribution.

This invention provides a method for lowering the content of gasoline olefines in catalystic cracking process. The inert termination medium, not taking part in the reaction, is fed into life-pipe, mixed with reactant-flow already in the life-pipe, then up-flowing along said pipe. The produced products stream is proceeded with oil-separation and products-recovery. Wherein, the volume of the termination medium fed-in is of 2-8 wt.% of the capacity of the catalystic cracking installation, and the feeding-point is at 1.0-2.0 seconds point of oil-contacting in lift-pipe. In this invention, light wt. petro-hydrocarbon can be used as termination agent, with its feeding valume being 5-15 wt%, and feeding-point being at 1.0-2.0 seconds point of oil-contacting time point. This invention is easy to operate, with lower olefines content in gasoline, and increases iso-hydrocarbons normal hydrocarbons ratio.

The invention relates to a catalytic cracking catalyst regeneration method and a catalytic cracking catalyst regeneration device. The method comprises the following steps: (1) a spent catalyst contacts a first oxygen-containing gas, and coke burning is carried out; (2) a mixture obtained after coke burning contacts methanol, and combustion is carried out; and (3) the mixture obtained after combustion contacts a second oxygen-containing gas, and coke-burning regeneration is continued. The regeneration device comprises a coke burning tank and a regenerator. The inner space of the regenerator is divided into a catalyst dense phase zone positioned in the lower part and a catalyst dilute phase zone positioned in the upper part. The top of the coke burning tank is communicated with the catalyst dilute phase zone of the regenerator through a delivery pipe, such that the mixture obtained through the coke burning process in the coke burning tank can be delivered to the regenerator. A methanol distributor is arranged in the delivery pipe, and is used for introducing methanol into the delivery pipe. With the method provided by the invention, regeneration device local overheating and over-temperature phenomena caused by dilute phase tail burning can be avoided, such that regeneration device stable operation can be realized.

The present invention relates to a catalytic conversion process for improving the product distribution, characterized in that a feedstock oil of good quality is contacted with a hot regenerated catalyst having a lower activity in a reactor to carry out a cracking reaction, the reaction product is separated from the spent catalyst to be regenerated, then the reaction product is fed into a separation system, and the spent catalyst to be regenerated is stripped, regenerated and recycled in the process. The isobutene content in the liquefied petroleum gas (LPG) produced by the process is increased by a factor of more than 30%, and the olefin content in the gasoline composition may be increased to more than 30 wt. %. The product distribution is optimized, and the yields of dry gas and coke are decreased, so as to sufficiently utilize the petroleum resources.

The embodiments of the present invention provide a combined method of ebullating bed hydrogenation and heavy oil catalytic cracking and a hydrogenation catalyst. The heavy oil raw material and hydrogen are subjected to hydrogenation reaction under the catalysis of hydrogenation catalyst, the hydrogenation reaction product is subjected to gas-liquid separation, the hydrogen in the separated gas phase is recycled for hydrogenation reaction, and the separated liquid phase is further catalyzed Cracking reaction, recovering the cracking products in the cracking products, mixing and recycling the recycled oil and heavy oil raw materials in the cracking products for hydrogenation reaction; the hydrogenation catalyst is a particle supported by silicon-aluminum oxide, with a particle size range of 0-300 μm, Directed hydrogenation of aromatic rings in heavy oil molecules, including gums, can be performed. The technical scheme of the invention improves the quality of catalytic cracking raw materials, improves the distribution of products, greatly reduces the oil slurry yield of catalytic cracking, or does not produce oil slurry, and can greatly improve the economic benefits of the combined process.

The invention relates to a technique method for producing gasoline by using methanol through a one-step method. The technique method comprises the following steps: (1) heating methanol and water and then feeding in a reactor, wherein the methanol is converted into C1-C12 hydrocarbon products under proper conditions; (2) carrying out heat exchange to the C1-C12 hydrocarbon products and then feeding in a separator, to obtain generation water, non-condensable gas and a liquid product containing C3-C12, wherein the liquid product is pumped into a stabilizing tower through a pump; (3) separating out gasoline fraction and liquefied gas in the stabilizing tower, discharging non-condensable gas from the tower top, wherein the gasoline fraction serves as a gasoline product and a gasoline absorbent; (4) feeding the non-condensable gas in an absorption tower, recovering C<3+> by using the gasoline absorbent, separating out dry gas from the tower top, and returning the gasoline absorbent to the stabilizing tower. According to the technical scheme, the technique method has the advantages of short technique flow, small equipment investment, low operation cost, high methanol conversion rate, high gasoline productivity being more than 36%, and greatly improved product distribution.

The invention discloses a catalytic cracking method and device. The method comprises the following steps of extracting the heat of a catalyst from a regenerator at a mixing section, mixing the catalyst subjected to heat extraction with heavy raw oil, entering a riser reactor, an isokinetic bed reactor and a precipitator of a reactor I, entering a fractionator by oil gas, and entering the regenerator by the catalyst for regeneration; mixing the other part of the catalyst from the regenerator with light raw oil, entering a reactor II, entering the precipitator by a compound of reaction oil gas and the catalyst, entering the fractionator by the oil gas, entering the regenerator by the catalyst for regeneration, producing qualified gasoline by the reactor I, and producing olefin by the reactor II, and thus, a set of devices is utilized to satisfy the needs for producing the gasoline and a chemical material.

The invention relates to a layered composite material as well as a preparation method and application thereof, in particular to a Fe-based material for high-selectivity preparation of alpha-olefin. Acatalyst provided by the invention can inhibit secondary hydrogenation reaction of primary olefinand water gas shift reaction WGS, thereby improving olefin selectivity, effectively reducing CO2 generation, regulating and controlling product distribution with high added value, especially improving the yield of alpha olefin, and having significant industrial application value.

The invention relates to a heavy oil deep processing method and device, and belongs to the technical field of petroleum processing. The method comprises the steps of replacing part of pre-lifting steam with dry gas to form pre-lifting mixed gas, and fully contacting a catalyst with heavy oil under the action of the pre-lifting mixed gas to carry out catalytic cracking reaction. According to the method, the catalyst is protected to a certain extent, cracking of the catalyst is avoided, the activity and selectivity of the catalyst are improved, then product distribution is changed, the yield of gasoline and diesel oil in the product is increased, economic benefits are increased, and meanwhile, sewage discharge is reduced.