66results about How to "Ideal comprehensive processing effect" patented technology

The invention discloses a combination method used for processing inferior diesel oil. According to the combination method used for processing inferior diesel oil, secondary processing of inferior diesel fractions comprises following steps: hydro-upgrading reaction is carried out firstly, and aromatic hydrocarbon selective ring-opening reaction is carried out; a reaction effluent is separated so as to obtain a liquid material, and the liquid material is extracted; aromatic hydrocarbon components are taken as catalytic cracking raw materials and are subjected to catalytic cracking reaction, and a gas material, catalytic gasoline and catalytic diesel oil are obtained via separation and fractionation; and catalytic diesel oil can be recycled back to a hydro-upgrading reactor. The combination method is capable of converting inferior diesel oil into catalytic gasoline products with high octane value as much as possible, increasing gasoline yield and octane value of a catalytic unit as far as possible, and providing an economical feasible technical route for inferior diesel oil processing.

The invention discloses a combined hydrogenation process method, in particular a combined hydrogenation process method for wax oil hydroprocessing, poor ignition quality fuel hydroupgrading and diesel hydrorefining. The method comprises the following steps: raw wax oil passes through a first reaction zone in the presence of hydrogen first, liquid after separation of products is taken as catalytic cracking raw material; the gas phase obtained through separation is mixed with poor ignition quality fuel raw material to enter a second reaction zone for hydroupgrading reaction; products in the second reaction zone are mixed with other diesel raw materials to enter a third reaction zone for hydrorefining reaction; and gas after separation of products in the third reaction zone is recycled after desulfurization, and liquid obtained after separation is subjected to steam stripping to obtain hydrogenant naphtha and hydrogenant diesel. The method aims at technical characteristics of wax oil hydroprocessing, poor ignition quality fuel hydroupgrading and diesel hydrorefining, integrates the three technologies organically, simplifies process flow at the same time of meeting the same product requirements, and reduces equipment, investment and operating cost.

The invention discloses a flexible hydrocracking method. The method consists of: passing mixed feed of wax oil and catalytic cracking diesel oil, and hydrogen through a hydrotreating reactor, and leaving the hydrotreating effluent to enter a first separator to undergo gas-liquid separation; making part of or the total hydrotreating generated oil enter a second separator to undergo gas-liquid separation, and fractionating the liquid, thus obtaining a light product and tail oil; returning the tail oil to the hydrotreating reactor and a hydrocracking reactor respectively to undergo reaction, and letting the hydrocracking effluent enter the second separator. By adjusting the blending proportion of the catalytic cracking diesel oil and the wax oil, and the distribution proportion of the hydrotreating generated oil, flexible adjustment of the hydrogenation product quality and yield can be realized, especially the yield proportion adjustment of high arene heavy naphtha and low-sulfur diesel oil, and nature control. On the basis of improving product quality, the method provided in the invention can achieve an ideal comprehensive processing effect and can further enhance the raw material adaptability.

The invention discloses an integrated hydroprocessing method. The method includes the following steps: under hydroprocessing conditions, high-sulfur raw oil and hydrogen are mixed and then pass through a hydroprocessing catalyst bed, high-nitrogen raw oil and hydrogen are mixed and then pass through a hydroprocessing catalyst bed, reaction effluents respectively enter hot high-pressure separators and are separated, two routes of produced gas are mixed and injected into washing water and then enter a cold high-pressure separator via a high-pressure air cooler, and the produced hydrogen-rich gas is recycled after passing through a circulating hydrogen desulfurization tower. The integrated hydroprocessing method organically combines hydroprocessing processes for processing different natures of materials, consequently, on the basis of the normal processing of different natures of poor-quality materials, the respective characteristics of the materials can be sufficiently utilized, and thereby an ideal comprehensive processing effect can be achieved. The method integrates two gas routes together, and has the advantages of little equipment investment, lower operation cost, simplified process flow and the like.

The invention discloses an integrated hydrocracking method. The method includes the following steps: under hydrocracking conditions, high-sulfur raw oil and hydrogen are mixed and then pass through a hydrocracking catalyst bed, high-nitrogen raw oil and hydrogen are mixed and then pass through a hydrocracking catalyst bed, reaction effluents respectively enter hot high-pressure separators and are separated, two routes of produced gas are mixed and injected into washing water and then enter a cold high-pressure separator via a high-pressure air cooler, and the produced hydrogen-rich gas is recycled after passing through a circulating hydrogen desulfurization tower. The integrated hydrocracking method organically combines hydrocracking processes for processing different natures of materials, consequently, on the basis of the normal processing of different natures of poor-quality materials, the respective characteristics of the materials can be sufficiently utilized, and thereby an ideal comprehensive processing effect can be achieved. The method integrates two gas routes together, and has the advantages of little equipment investment, lower operation cost, simplified process flow and the like.

The invention discloses a combined hydrotreatment method, comprising the following steps of: allowing a wax oil raw material and hydrogen to pass through a first hydrogenation reaction zone and separating a reaction effluent; mixing an obtained gas phase and coker gasoline and allowing the mixture to pass through a second hydrogenation reaction zone; directly mixing the reaction effluent and a diesel oil raw material and letting them pass through a third hydrogenation reaction zone, and carrying out separation and fractionation on the obtained reaction effluent so as to obtain refined gasoline and diesel oil; mixing the diesel oil and supplemented hydrogen and letting them pass through a fourth hydrogenation reaction zone, and dropping pour point. By the adoption of the method, heat brought from a gas generated from wax oil hydrotreatment at a higher temperature and reaction heat of coker gasoline can be reasonably utilized; and on the basis of minimizing construction investment to the maximum, refined gasoline, diesel oil with low condensation point and high-quality catalytic cracking raw oil can be produced, thus reaching an ideal comprehensive processing effect.

The invention discloses a method for producing high-quality gasoline and diesel by catalyzing diesel oil. Oil and circulating hydrogen are mixed into II hydrofining reaction zone for reaction, and the reaction temperature is 30~120°C higher than I hydrofining reaction zone; (3) The resulting oil obtained in step (2) is cut into light components and heavy components; (4) The light components obtained in step (3) are mixed with circulating hydrogen into the hydroreforming reaction zone, and the resulting oil is separated to obtain gasoline fractions and diesel fractions; (5) The heavy components obtained in step (3) are mixed with circulating hydrogen Entering the hydroconversion reaction zone, the generated oil passes through the separation system to obtain gas, gasoline, and diesel fractions. (6) The gasoline obtained in step (4) is mixed with the gasoline obtained in step (5) to obtain a qualified gasoline product. Step ( The diesel oil obtained in 4) is mixed with the diesel oil obtained in step (5) to obtain a qualified diesel product. The method can produce high-quality fuel oil products, and at the same time, compared with other technologies, it has the characteristics of low chemical hydrogen consumption and flexible adjustment of product structure.

The invention discloses a hydrocracking method for processing a low-sulfur raw material. The method comprises the steps of: hydroprocessing a high-sulfur raw material, and performing gas-liquid separation on a reaction effluent to obtain sulfur-containing hydrogen-enriched gas; hydrocracking low-sulfur raw oil, and performing gas-liquid separation on a reaction effluent to obtain a low-sulfur hydrogen-enriched gas; and mixing the sulfur-containing hydrogen-enriched gas and the low-sulfur hydrogen-enriched gas, selectively performing hydrogen sulfide removal treatment on the gas mixture, and circulating the treated gas mixture to a reactor inlet. According to the invention, two paths of hydrogen-enriched gas of the hydroprocessing process and the hydrocracking process are effectively combined, and the sulfur-containing hydrogen-enriched gas subjected to hydroprocessing is fully utilized to replenish sulfur for a low-sulfur raw material hydrocracking device, so that the problem of sulfur loss of the catalyst during long-term operation of the low-sulfur hydrocracking device is effectively solved. The hydrocracking method disclosed by the invention has the advantages of simplified process flow, low operation cost, low total investment and the like.