Catalytic cracking oil slurry solid-removing agent and preparation method thereof

Abstract

The invention relates to a catalytic cracking oil slurry solid-removing agent and a preparation method thereof. The catalytic cracking oil slurry solid-removing agent comprises the following components in percentage by weight: 30-50% of a solid-removing main agent adopting a structural formula (I), 5-10% of a gel breaker, 5-10% of a synergist and 30-50% of a solvent. The catalytic cracking oil slurry solid-removing agent is an oil-soluble product, so that the catalytic cracking oil slurry solid-removing agent can directly act on an oil phase; the catalytic cracking oil slurry solid-removing agent is low in using amount, quick in action and simple in method; the catalytic cracking oil slurry solid-removing agent can efficiently remove catalyst powder from a catalytic cracking oil slurry, sothat significant economic benefits are increased for an oil refining enterprise.

Description

Technical field: [0001] The invention relates to the technical field of petroleum refining and processing, and more specifically relates to a desolidifying agent for catalytic cracking oil slurry and a preparation method thereof. Background technique: [0002] Catalytic cracking oil slurry is a heavy oil product from the bottom of the main fractionation tower of the refinery's fluid catalytic cracking (FCC) unit. It is rich in colloids and asphaltenes, and has the characteristics of high viscosity and high density. FCC oil slurry usually contains a certain amount of solid catalyst powder with a relatively high ash content, generally 0.2-0.9 wt%. These catalyst powders will affect the quality of downstream products. For example, when used as carbon black and needle coke raw materials, the ash content must be <0.05wt%, and high-grade products must be <0.02wt%. In addition, when the oil slurry with high catalyst powder content is used as a fuel oil component, it will acc...

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Problems solved by technology

However, due to the use of water-soluble agents in the above methods, and the catalyst powder is in the oil phase, the effect of this type of catalyst powder removal is heterogeneous, and the catalyst powder needs to undergo a removal process from the oil phase to the water phase. , will inevitably affect the removal efficiency; on the other hand, the above methods also need to add a water phase to the catalytic cracking oil slurry. Although a demulsifier is used for oil-water separation, it will definitely leave moisture in the oil slurry, thus affecting the oil slurry. quality; the last point, most of the flocculants used in the above methods contain metal ions (polyaluminum chloride, etc.), and residues in the oil slurry will also have an adverse effect on the deep utilization of the oil slurry (such as increasing the ash value, making the catalyst poisoning, etc.)

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