8results about How to "Increase liquid collection" patented technology

The application discloses a catalyst for producing low-haze lubricating oil base oil and a preparation method and application thereof. The catalyst contains hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve, and the mass content of the ZSM-22 molecular sieve in the hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve is 10-95%, preferably 15-90%. The preparation method of the catalyst comprises the following steps: (1) preparing hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve; (2) mixing, shaping, drying and calcining the hydrogen type ZSM-22 / ZSM-23 eutectic molecular sieve prepared in the step (1), macroporous alumina and a binder to obtain a carrier; and (3) introducing noble metal active components into the carrier obtained in the step (2) and obtaining the final catalyst after drying and calcining. The catalyst prepared by the method has high weak acid content and appropriate strong acid content, can improve the liquid yield, and greatly reduces the haze point of the lubricating oil base oil.

The application discloses a chemical hydrocracking catalyst and a preparation method and application thereof. The chemical hydrocracking catalyst contains 25-60%, preferably 30-50% of modified EMT molecular sieve based on the weight of the catalyst, and the modified EMT molecular sieve has the following properties: a silicon-aluminum ratio (molar ratio of SiO2 / Al2O3) of 10-30, preferably 15-20, a pyridine infrared acid amount of 0.5-1.2 mmol / g, preferably 0.7-1 mmol / g. The preparation method of the hydrocracking catalyst comprises mixing the modified EMT molecular sieve, a binder and a hydrogenation active metal to obtain the chemical hydrocracking catalyst or loading the hydrogenation active metal on the modified EMT molecular sieve and the binder after shaping to obtain the chemical hydrocracking catalyst. The hydrocracking catalyst has the advantages of high reaction activity, high product liquid yield, high heavy naphtha fraction yield, high aromatic potential of the heavy naphtha, low tail oil BMCI value and the like in a heavy oil hydrocracking process.

The utility model discloses a light hydrocarbon conversion product separation device which comprises an absorption tower, an oil-gas separation tank, a desorption tower, a stabilization tower, a C5 / C6 fractionating tower and a compressor system, an inlet of the compressor system is connected with a light hydrocarbon conversion gas-phase reaction product inlet pipeline, the upper part of the absorption tower is connected with a light hydrocarbon conversion liquid-phase reaction product inlet pipeline, the top of the absorption tower is connected with an absorption tower top gas discharge pipeline, the absorption tower, the oil-gas separation tank, the desorption tower, the stabilization tower and the C5 / C6 fractionating tower are sequentially connected, and the top of the stabilization tower is connected with a propane discharge pipeline. A pipeline at the bottom of the stabilizing tower is divided into two paths, one path is connected with the upper part of the absorption tower, and the other path is connected with a C7 + fraction discharge pipeline; the top of the C5 / C6 fractionating tower is connected with a C4 / C5 fraction discharge pipeline, and the bottom of the liquefaction separating tower is connected with a C6 fraction discharge pipeline. The device not only reduces the construction cost and the energy consumption, but also can reduce the processing cost, increase the liquid yield and improve the aromatic hydrocarbon recovery rate.

The application discloses a method for hydrocracking of wax oil, wherein the wax oil raw material is treated by a hydrofining catalyst and then reacts under the action of a hydrocracking catalyst, and the hydrocracking catalyst contains 10-50%, preferably 20-40% of B-Y heteroatom molecular sieve based on the weight of the hydrocracking catalyst. The method for hydrocracking of wax oil has the advantages of high reaction activity, high product liquid yield, low hydrogen consumption, high aromatic potential of heavy naphtha, high smoke point of aviation kerosene, low BMCI value and dry point of tail oil, etc.

The application discloses a wax oil hydrocracking processing method, which comprises the following steps: (1) wax oil raw material is mixed with hydrogen and then enters a hydrofining reaction zone, and is firstly contacted with a hydrofining catalyst bed to obtain hydrofining generated oil and gaseous products; (2) the hydrofining generated oil and gaseous products obtained in the step (1) enter a hydrocracking reaction zone, or the hydrofining generated oil obtained in the step (1) is sequentially contacted with a Y molecular sieve-based hydrocracking catalyst and a PST-2 molecular sieve-based hydrocracking catalyst; (3) reaction effluent obtained in the step (2) is subjected to gas-liquid separation and fractionation to obtain gas, light naphtha fraction, heavy naphtha fraction, aviation kerosene fraction, diesel fraction and tail oil. The processing method has high liquid product yield, high heavy naphtha fraction yield and high aromatic potential, and low BMCI value of the tail oil.

The utility model discloses light hydrocarbon conversion product separation equipment which comprises an absorption tower, an oil-gas separation tank, a desorption tower, a stabilization tower, a liquefied gas fractionating tower and a compressor system, an inlet of the compressor system is connected with a gas-phase reaction product inlet pipeline, the upper part of the absorption tower is connected with a liquid-phase reaction product inlet pipeline, the top of the absorption tower is connected with an absorption tower top gas discharge pipeline, the absorption tower, the oil-gas separation tank, the desorption tower, the stabilization tower and the liquefied gas fractionating tower are sequentially connected, and the top of the stabilization tower is connected with a propane discharge pipeline; a pipeline at the bottom of the stabilizing tower is divided into two paths, one path is connected with the upper part of the absorption tower, and the other path is connected with a C7 + fraction discharge pipeline; the upper part of the stabilizer is connected with the liquefied gas fractionating tower through a pipeline, and the lower part is connected with a C6 fraction discharge pipeline; and the bottom of the liquefied gas fractionating tower is connected with a C5 fraction discharge pipeline. The device not only reduces the construction cost and the energy consumption, but also can reduce the processing cost, increase the liquid yield and improve the aromatic hydrocarbon recovery rate.

The invention relates to a method and system for recycling waste plastics, and the method comprises the steps that S1, solid waste plastics and replacement gas enter a deoxidation device, so that the replacement gas conducts purging deoxidation treatment on the solid waste plastics, deoxidized plastics are obtained, and the deoxidation device comprises a gas stripping functional area and a diffusion functional area which communicate with each other; s2, the deoxidized plastic enters a softening-dechlorination device to be subjected to softening-dechlorination treatment, and chlorine-containing gas and softened dechlorinated plastic are obtained; s3, the softened dechlorinated plastic enters a liquefying device to be subjected to liquefying treatment, and pyrolysis gas and liquid plastic are obtained; s4, enabling the chlorine-containing gas in the step S2 and the pyrolysis gas in the step S3 to enter an alkali washing device for alkali washing treatment; and at least part of the liquid plastic in the step S3 serves as a circulating material to be heated and then returns to the liquefying device to be continuously treated. The present disclosure can significantly reduce the yield of by-products and continuously and stably provide a liquid feed for waste plastic pyrolysis.

The utility model discloses a fractionating device for light hydrocarbon conversion products. The fractionating device comprises an absorption tower, an oil-gas separation tank, a desorption tower, a stabilization tower, a liquefied gas fractionating tower and a compressor system, an inlet of the compressor system is connected with a light hydrocarbon conversion gas phase reaction product inlet pipeline, the upper portion of the absorption tower is connected with a light hydrocarbon conversion liquid phase reaction product inlet pipeline, the top of the absorption tower is connected with an absorption tower top gas discharge pipeline, and the absorption tower, the oil-gas separation tank, the desorption tower, the stabilization tower and the liquefied gas fractionating tower are sequentially connected. A pipeline at the bottom of the stabilizing tower is divided into two paths, one path is connected with the upper part of the absorption tower, and the other path is connected with a C6 + fraction discharge pipeline; the top of the liquefied gas fractionating tower is connected with a liquefied gas discharge pipeline, and the bottom is connected with a C5 fraction discharge pipeline. The device not only reduces the construction cost and the energy consumption, but also can reduce the processing cost, increase the liquid yield and improve the aromatic hydrocarbon recovery rate.