43results about How to "Emission reduction and efficiency increase are beneficial" patented technology

The invention discloses a hydro-cracking method for blending ethylene bottom oil, which is different from the method for processing the conventional ethylene bottom oil and comprises the following steps: blending an ethylene bottom oil light end into a conventional hydro-cracking raw material for hydro-cracking, in the presence of hydrogen, sequentially contacting the ethylene bottom oil light end with a hydro-guard catalyst, a hydro-refining catalyst, a hydro-residue carbon removing catalyst and a hydro-cracking catalyst; separating an effluent of hydro-cracking reaction to obtain light fuel oil. The method of the invention adopts a method of grading the hydrogenation catalyst, can process the ethylene bottom oil light end and produce diesel oil having a high cetane number and a low condensation point and a naphtha having high arene, and is not obviously changed in a BMCI value of tail oil and a smoke point of a jet fuel when compared with the conditions before blending the ethylene bottom oil.

The invention discloses a method for hydrogenating ethylene tar, which selects an appropriate cutting point to fractionate the ethylene tar into a light fraction and a heavy fraction aiming at the characteristics of high content of arene, colloid, carbon residue and asphaltene in the ethylene tar. The light fraction passes through a hydrogenation protection catalyst, a hydrofining catalyst, a hydrogenation and carbon residue-removing catalyst and a hydrocracking catalyst sequentially to obtain a gasoline fraction and a diesel oil fraction; and the heavy fraction passes through the hydrogenation protection catalyst, the hydrogenation and carbon residue-removing catalyst and a hydro-conversion catalyst sequentially to obtain a gasoline fraction and a diesel oil fraction. According to the component characteristics of the light fraction and the heavy fraction of the ethylene tar, the method selects different hydrogenation schemes so as to convert the ethylene tar into fuel oil to a great extent, increase the additional value of the ethylene tar and make the device operate for a long time.

The invention discloses a method for hydrotreating ethylene tar, which comprises the following steps of: performing fractional distillation on the ethylene tar by selecting a proper cutting point to obtain light and heavy fractions; making the light fraction contact a hydrogenation protective agent, a hydrogenation refining catalyst, a hydrogenation carbon residue catalyst and a hydrocracking catalyst in turn, reacting to obtain products, and separating the products to obtain gasoline and diesel fractions; and making the heavy fraction contact a hydrogenation protecting catalyst, a hydrogenation carbon residue removing catalyst and a hydro-conversion catalyst in turn to obtain hydro-conversion generated oil, wherein partial hydro-conversion generated oil is circulated to enter a hydrogenation reaction area, and the rest hydro-conversion generated oil is separated to form gasoline and diesel fractions. In the method, according to composition characteristics of the light and heavy fractions of the ethylene tar, different hydrotreating schemes are selected, so that the ethylene tar is converted into fuel oil to the greatest extent, the problem of high temperature rise of a hydrogenation reactor bed can be effectively solved, the running period of the device is prolonged, full fractions of the ethylene tar are fully utilized and the added value of the ethylene tar is improved.

The invention discloses a method for producing clean fuel oil from ethylene tar. The method consists of: fractionating ethylene tar into light fraction and heavy fraction, mixing the heavy fraction with a conventional coking raw material, conducting delayed coking to obtain coker gasoline and coker diesel oil, performing hydrofining on the coker gasoline, mixing the coker diesel oil with the ethylene tar light fraction, subjecting the mixture to hydrotreating, and leaving the reaction effluent and the coker gasoline hydrofining product together to undergo separation by a fractionating tower, thus obtaining clean gasoline and diesel oil products. Directed at the characteristics of high content of aromatic hydrocarbon, colloid, carbon residue and asphaltene in ethylene tar, the method provided in the invention fractionates the ethylene tar into light fraction and heavy fraction, and adopts different processing processes according to the composition characteristics of each fraction, thus not only enhancing the utilization rate of ethylene tar, increasing the yield of light fuel oil, but also improving the product quality of light fuel oil, and enabling the equipment to run smoothly for a long period.

The invention discloses a treatment method of ethylene tar. The method consists of: fractionating ethylene tar into light fraction and heavy fraction, mixing the heavy fraction with a conventional coking raw material, conducting delayed coking to obtain coker gasoline, coker diesel oil and coker gas oil, mixing the coker diesel oil with the ethylene tar light fraction, performing rectification/crystallization purification to obtain naphthalene, mixing the naphthalene removed oil, naphthalene after-cut oil, with the coker gasoline and the coker gas oil, taking the obtained mixture as a hydrotreating raw material, leaving the material to undergo a hydrofining reaction, separating gasoline fraction I, subjecting the obtained fraction heavier than gasoline to hydrocracking so as to obtain gasoline fraction II and a diesel oil product, and mixing the gasoline fraction II with the gasoline fraction I so as to obtain a final gasoline product. Directed at the characteristics of high content of aromatic hydrocarbon, colloid, carbon residue and asphaltene in ethylene tar, the method provided in the invention fractionates the ethylene tar into light fraction and heavy fraction, and adopts different processing processes, thus increasing the added value of ethylene tar. While generating the chemical raw material naphthalene, the method also improves the product quality of light fuel oil, and also enables the equipment to run smoothly for a long period.

The invention discloses a method and system for producing diesel oil from an inferior oil material. The method includes the steps: mixing the inferior oil material with waste plastics, then carrying out a pyrolysis reaction, then making an obtained pyrolysis gas contact with a catalyst and carrying out a catalytic reaction, separating the obtained catalytic reaction product to form a gas-phase product and a liquid-phase oil product, and hydrotreating the liquid-phase oil product to form naphtha and diesel oil. The obtained naphtha can go to an ethylene-removing cracking unit to be used as a cracking raw material, and the obtained diesel oil can be used as a qualified diesel oil product and leaves factories. The method has the advantages of simple process and cheap and easily obtained raw materials, can make full use of the waste plastics, the inferior oil material and other resources, and also is green and environmentally friendly; and the yield of light fuels can reach more than or equal to 95%, and the obtained diesel oil has good quality.

The invention discloses a method for producing light fuel oil from ethylene tar. The method consists of: fractionating ethylene tar into light fraction and heavy fraction, mixing the heavy fraction with a conventional coking raw material, conducting delayed coking to obtain coker gasoline, coker diesel oil, and coker gas oil, performing hydrofining on the coker gasoline, mixing the coker diesel oil with the ethylene tar light fraction, subjecting the mixture to hydrotreating, and leaving the product and the coker gasoline hydrofining product together to undergo separation, thus obtaining clean gasoline and diesel oil products. Directed at the characteristics of high content of aromatic hydrocarbon, colloid, carbon residue and asphaltene in ethylene tar, the method provided in the invention fractionates the ethylene tar into light fraction and heavy fraction, and adopts different processing processes, thus not only enhancing the utilization rate and the additional value of ethylene tar, increasing the yields of gasoline and diesel oil, improving the product quality of light fuel oil, and also enabling the equipment to run smoothly for a long period.

The invention discloses a method for increasing the yield of clean fuel oil. The method comprises the following steps: subjecting ethylene tar to fractionation so as to obtain a light fraction and a heavy fraction, mixing the heavy fraction with a conventional coking raw material, then subjecting the mixture to a delay coking treatment so as to obtain a coking product, transporting the coking product and a C9 component from an ethylene device into a coking distillation tower, carrying out a distillation treatment so as to obtain a coking gasoline fraction and a coking diesel oil fraction, carrying out a hydro-refining treatment on the obtained coking gasoline fraction, mixing the coking diesel oil fraction with the ethylene tar light fraction, then subjecting the mixture to a hydro-treatment, and separating the products so as to obtain a gasoline product and a diesel oil product. The method fully utilizes the ethylene tar and C9 fraction, improves the utilization rate of by-products of ethylene device, prominently improves the yield and quality of lightweight fuel oil, and is beneficial for yield increasing of high quality clean fuel oil for refineries.

The invention discloses a method for producing light fuel oil from ethylene tar. The method is as below: fractionating ethylene tar into a light fraction and a heavy fraction; mixing the heavy fraction with a conventional coking raw material, and subjecting the mixture to delayed coking to obtain coker gasoline, coker diesel and coker gas oil; mixing the coker gasoline and the coker diesel with the light fraction of the ethylene tar, and subjecting the mixture to a hydrofining reaction; distilling the product to obtain a gasoline fraction I and a fraction heavier than the gasoline; subjecting the fraction heavier than the gasoline to a hydrogenation treatment to obtain light fuel oil, and distilling to obtain a gasoline fraction II and a diesel product; and mixing the gasoline fraction I and the gasoline fraction II to obtain a final gasoline product. The method provided by the invention utilizes the characteristics of high contents of ethylene tar aromatic hydrocarbons, colloid, carbon residue and glial and asphaltene of ethylene tar to fractionate the ethylene tar into the light fraction and the heavy fraction; different processing methods are employed to improve the added value of ethylene tar, increase yield of gasoline and diesel, improve product quality of light fuel oil and realize long-period stable operation of devices.

The invention discloses a hydrogenation method for ethylene tar, which comprises the following steps of: performing fractional distillation on the ethylene tar by selecting a proper cutting point to obtain light and heavy fractions; making the light fraction contact a hydrogenation protecting catalyst, a hydrogenation refining catalyst, a hydrogenation carbon residue removing catalyst and a hydrocracking catalyst in turn, and reacting to obtain hydrocracking generated oil, wherein partial hydrocracking generated oil is circulated and mixed with the light fraction of the ethylene tar to enter a hydrogenation reaction area, and the rest hydrocracking generated oil is separated to form gasoline and diesel fractions; and making the heavy fraction contact a hydrogenation protecting catalyst, a hydrogenation carbon residue removing catalyst and a hydro-conversion catalyst preferably in turn, and separating to obtain gasoline and diesel fractions. In the method, according to composition characteristics of the light and heavy fractions of the ethylene tar, different hydrotreating schemes are selected, so that the ethylene tar is converted into fuel oil to the greatest extent, the problem of high temperature rise of a hydrogenation reactor bed can be effectively solved, the running period of the device is prolonged, full fractions of the ethylene tar are fully utilized and the added value of the ethylene tar is improved.

The invention discloses a hydrocracking-catalytic cracking combined treatment method for coal tar and residual oil. The method includes: subjecting coal tar to pressure reduced distillation so as to obtain light coal tar and heavy coal tar; mixing the light coal tar with the residual oil, then conducting hydrocracking reaction, separating the hydrogenation cracking effluent to obtain a gas and a liquid product, and fractionating the liquid product to obtain gasoline, diesel, pressure reduced gas oil and tail oil; mixing the tail oil obtained by hydrocracking with heavy coal tar, then carrying out catalytic cracking reaction under supercritical conditions so as to obtain cracked gas, light distillate oil, heavy distillate oil and cracking residual oil. The method provided by the invention can improve the conversion rate of raw materials, reduce coking, increase the yield of light oil, extend the depth, slow down the deep condensation reaction of heavy raw material oil in a catalytic cracking device and prolong the service life of a catalytic cracking catalyst, thus providing a processing method for improving the economical efficiency of residual oil and coal tar with low added value.

The invention discloses a method for producing fuel oil employing ethylene bottom oil and heavy benzol. The method comprises the following steps: mixing ethylene bottom oil with heavy benzol, and processing in a thermal cracking reaction zone; condensing obtained pyrolysis gas and feeding to a separator for gas-liquid separation to respectively obtain a gas product and liquid-phase oil, wherein the residues generated in the reaction process are left in the thermal cracking reaction zone, and can be used as solid fuel; collecting a gas product as a fuel gas; processing the oil-phase oil in a hydrotreating reaction zone and a hydrocracking reaction zone, and separating the obtained hydrocracking product to obtain a gasoline fraction and a diesel fraction; or carrying out fractionation on the oil-phase oil to obtain a light fraction and a heavy fraction, processing the obtained heavy fraction in the hydrotreating reaction zone and the hydrocracking reaction zone, and separating the obtained hydrocracking product to obtain the gasoline fraction and the diesel fraction. According to the method disclosed by the invention, the process is simple; the whole ethylene bottom oil fraction can be fully utilized; the yield of the light fuel can be not lower than 85%; the obtained diesel is good in quality; and the yield of ethylene and propylene is improved.

The invention relates to the field of petrifaction, and discloses a hydrogenation protection catalyst as well as a preparation method and application thereof. The hydrogenation protection catalyst comprises an alumina carrier and a metal oxide active component, and the preparation method comprises the following steps: uniformly mixing and kneading pseudo-boehmite, anthracene, biotite and an extrusion aid to obtain a mixture; uniformly mixing and kneading a peptizing acid solution and the mixture, shaping, drying and roasting to obtain an aluminum oxide carrier; adding a nonionic surfactant into the precursor aqueous solution of the metal oxide active component to form a mixed solution; and impregnating the alumina carrier in the mixed solution, drying, and roasting to obtain the hydrogenation protection catalyst. Anthracene is used as a pore-enlarging agent, and a better pore-enlarging effect is achieved. The mechanical strength of the carrier can be improved; on the other hand, the activity stability of the downstream main catalyst can be better protected. According to the hydrogenation protection catalyst, inferior heavy oil can be completely utilized, and the obtained mixed aromatic hydrocarbon product is high in yield and low in impurity content.

The invention discloses a method for producing clean fuel oil from ethylene tar. The method is as follows: fractionating the ethylene tar into a light fraction, a middle fraction and a heavy fraction, mixing the heavy fraction with a conventional coking raw material, conducting delayed coking to obtain coker gasoline, coker diesel oil and coker wax oil, mixing the obtained coker gasoline with the ethylene tar light fraction, leaving the mixed material to undergo hydrofining, performing rectification/ crystallization purification on the middle fraction to obtain naphthaline, mixing naphthaline removal oil after naphthaline extraction and naphthaline post-fraction oil with the coker diesel oil and the coker wax oil for hydrotreating, and separating an obtained product and the hydrofining product of the coker gasoline and the ethylene tar light fraction to obtain gasoline diesel oil products. Directed at the characteristics of high content of aromatic hydrocarbons, colloid, carbon residue and asphaltene in the ethylene tar, the method provided in the invention fractionates the ethylene tar into the light fraction, the middle fraction and the heavy fraction, and adopts different processing processes, thus not only enhancing the additional value of the ethylene tar, improving the product quality of light fuel oil in the same time of obtaining of the chemical raw material naphthaline, but also enabling the equipment to run smoothly for a long period.