Novel high-efficiency refining catalytic aid and preparation method thereof

Abstract

The invention discloses a novel high-efficiency refining catalytic aid and a preparation method thereof, and belongs to the field of chemical engineering. The high-efficiency refining catalytic aid contains the following components: thiophosphoric acid, molybdenum oxide, L-STA turbine oil and sulfuric acid. The preparation method comprises the following steps of: mixing the components to prepare an intermediate; mixing the 90 to 95 percent of intermediate with 5 to 10 percent of sodium hydroxide solution with the concentration of 5 to 8 percent, reacting at the temperature of between 250 and 280 DEG C and under the pressure of 2 to 5 MPa for 1 to 2 hours, reducing the temperature to 30 DEG C, and standing for demixing for 2 to 3 hours to prepare an upper oil substance, namely an active ingredient A; and reacting 95 to 98 volume percent of active ingredient A with 2 to 5 volume percent of alkyl side chain-containing auxiliary component B at the temperature of between 50 and 70 DEG C and at the normal pressure for 0.5 to 1 hour, sequentially adding 0.5 to 1 percent of stabilizer 1, 1 to 3 percent of stabilizer 2 and a homogenizing-dispersing agent, and stirring in a mixing kettle at a speed of 300 to 400 revolutions per minute for 1 to 1.5 hours to prepare the finished product of the high-efficiency refining catalytic aid.

Description

technical field [0001] The present invention relates to a catalytic aid and its preparation process, in particular to a method that can increase the yield of light oil in an oil refinery, improve the activity of a catalyst, improve the cracking activity of a catalyst and the conversion capacity of heavy oil, and reduce the coke yield of oil slurry A novel high-efficiency oil refining catalytic aid and a preparation method thereof. Background technique [0002] In view of the characteristics of heavy and inferior crude oil in my country and the high content of heavy metals and high sulfur in imported foreign oil, the development of light fuel oil production technology based on catalytic processes such as cracking and hydrogenation is the solution to the problem of heavy and inferior oil supply. It is one of the effective measures to solve the contradiction between the demand for lighter and cleaner oil products. In the process of petrochemical production, in addition to the co...

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Problems solved by technology

[0003] The catalyst is composed of a matrix, active components and co-active components. The matrix mainly affects the physical properties of the catalyst, and the active and co-active components directly affect the catalytic properties of the catalyst such as activity, selectivity, and stability. The active and co-active components The valence state, charge, size, existence form, quantity and interaction form of the elements are the cores that affect the catalytic properties of the catalyst. The cracking catalyst has low catalytic conversion capacity for heavy oil, poor selectivity, and poor resistance to metal pollution. The main reasons for low oil yield and high catalyst consumption

[0004] In the past ten years, as the catalytic raw materials have become heavier and worse, the trend of catalyst activity decay in the riser has become more serious, which has affected product distribution and product quality. Aiming at the status quo of catalyst activity decay in the riser, affecting product distribution and product quality, catalytic cracking The process and engineering are mainly improved as follows: (1) Improve the pre-lifting structure of the riser reactor, put into use a new type of high-efficiency atomizing nozzle, develop the temperature optimization control technology in the mixing zone, a new type of oil agent rapid separation system, and high-quality enhanced stripping technology These works have improved the heat transfer and mass transfer effect of the agent oil contact before and after the reaction and the degree of secondary reaction in the later stage of the reaction, reduced the speed of catalyst deactivation, and reduced the yield of coke, but it is difficult to determine the catalyst activity in the middle stage of the reaction. (2) Through the implementation of the two-stage series series riser catalytic cracking process, variable diameter riser catalytic cracking process, down-flow riser catalytic cracking process and other equipment process transformation measures, by increasing the amount of catalyst circulation to Indirectly improve the activity of the catalyst, but the process is complicated and the operation is difficult, the investment is large, the pertinence is strong, and the scope of application is limited; (3) the method of increasing the amount of fresh catalyst added and speeding up the replacement of the deactivated catalyst is also helpful to improve the activity of the catalyst , but the agent consumption is too large, and the unit consumption of the catalyst is increased from 0.7kg / t raw material to 1.4kg / t raw material, which not only increases the operating cost, but also increases the environmental pollution caused by the discharge of solid pollutants-waste catalyst; in the past five years, foreign countries Well-known catalyst companies and petrochemical companies such as GraceDavison, Akzo Nobel, UOP, Exxon, etc. have effectively slowed down the trend of catalyst activity decay with the reaction process and maintained catalyst activity by implementing measures such as optimizing catalyst formulation and manufacturing technology, and adding effective active components in a timely manner. It is relatively stable, economical, effective and convenient. It can timely adjust the types and dosages of effective active components according to different feedstock oils and different production schemes, which plays a positive role in optimizing product distribution, especially the conversion rate of heavy oil, and improving product quality. , representing the development direction of cracking catalyst activity stabilization technology

[0005] Rare earth elements exist widely in nature and are widely distributed in the earth's crust. The reserves account for about 0.016%, mainly in the form of minerals. my country is a country with a large number of rare earth resources. Half of the world's rare earth resources, large reserves, many varieties, good quality, and low mining costs are the four major characteristics of my country's rare earth resources. The development of my country's rare earth industry is relatively late, but the development speed is relatively fast, and it has become one of the world's largest rare earth production countries. First, in terms of separation and purification technology, it can be regarded as world-class, but China's rare earth industrial product output and technical level and the comprehensive utilization level of low-grade rare earth minerals are far behind the world's advanced level, resulting in a large backlog of rare earth primary products in China , and the embarrassing situation of importing a large number of intermediate and high-grade rare earth products, it is difficult for the resource advantages of the rare earth powers to be transformed into economic advantages

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