Settler for accelerating settlement of oil slurry catalyst particles

Abstract

The invention provides a settler for accelerating settlement of oil slurry catalyst particles. The settler comprises a settler body, the settler body comprises an enrichment part, a settlement part and a clarification part which are sequentially arranged from bottom to top, a distributor is arranged in the enrichment part, the distributor is communicated with a feeding port formed in one side of the enrichment part through a feeding pipe, a grid is arranged above the distributor, the bottom end of the enrichment part is provided with a discharge port, one side of the clarification part is provided with an oil outlet, an agent-added oil slurry enters from the feeding port, passes through the distributor and the grid and is separated by the settlement part to obtain a catalyst enriched liquid and clarified oil, the catalyst enriched liquid is discharged from the discharge port, and the clarified oil is discharged from the oil outlet. The settler for accelerating settlement of the oil slurry catalyst particles is reasonable in structure, high in purification speed of treated oil slurry, high in ash removal rate, capable of being continuously operated, energy-saving and environment-friendly, and has extremely high economic value and application value.

Description

technical field [0001] The invention relates to the field of petrochemical industry, especially a settler for accelerating the sedimentation of catalyst particles. Settler for aggregation and flocculation of destabilized catalyst particles in oil slurry. Background technique [0002] Catalytic cracking oil slurry is a by-product of catalytic cracking, which has good economic value due to its own characteristics, but because it contains 0.1-0.9% of catalyst powder with a diameter of less than 100 μm (microns), it is necessary to use oil for economical scale and value-added. Slurry, the oil slurry must be purified. [0003] At present, there are roughly the following types of industrial oil slurry purification treatment technologies: chemical additive sedimentation method, filtration method, etc. For the natural sedimentation method, many literature patents have announced the method of adding additives to accelerate the sedimentation: [0004] USP4407707 discloses a method ...

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Problems solved by technology

[0011] The patented technologies published above all show that adding additives can significantly improve the settling effect and shorten the settling time, but there are many shortcomings: First, the operating temperature is low, and the oil slurry needs to undergo multi-stage heat exchange before it can be processed. temperature, and the qualified oil slurry needs to be heated again before reuse, which consumes a lot of energy

Second, the settling time of the oil slurry tank needs at least 24 hours. In order to ensure the settlement effect, the construction site and cost of the oil slurry tank will be increased.

Third, the structure of the oil slurry tank is basically a storage container with a simple structure, without any internal components that are beneficial to the settlement of the oil slurry powder, so it can only be settled statically, and the settlement effect is not good

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