Heavy oil slurry reactor hydrogenation reaction device and application method

Abstract

The invention discloses a heavy oil slurry reactor hydrogenation reaction device and an application method. The device comprises a slurry bed circulation flow reactor, a buffer tank connected with the slurry bed circulation flow reactor and a fixed bed hydrogenation reactor communicated with the upper portion of the buffer tank. The slurry bed circulation flow reactor comprises an ascending pipe (4), an enlarging section (1) on the top of the ascending pipe and a descending pipe (8). The enlarging section (1) is communicated with the upper portion of the descending pipe (8). The lower portion of the ascending pipe (4) is communicated with the bottom of the descending pipe (8). A slurry phase separator is arranged inside the enlarging section (1). The slurry phase separator is a sleeve structure with an inner cylinder (3) and an outer cylinder (2). A foam remover (11) is arranged at the upper portion of the slurry phase separator. A gas outlet (10) is arranged on the top of the enlarging section. A material outlet (13) is arranged on the side wall of the enlarging section. A raw material inlet (9) is formed in the bottom of the ascending pipe (4). According to the slurry reactor hydrogenation reaction device and application method, long-term operation of the reactor is convenient, the heavy oil hydrogenation conversion rate is increased, and slurry processing of follow-up equipment is convenient.

Description

technical field [0001] The invention relates to a device and method for hydrogenation of heavy oil, more specifically, a reaction device and method suitable for hydrogenation of heavy oil and refining of light oil produced by the reaction. Background technique [0002] Hydrogenation is an important technical route for the treatment of inferior raw materials. Through hydrogenation, impurities such as metals, colloids, residual carbon, sulfur, and nitrogen in heavy oil products can be effectively removed. At present, the most commonly used in the hydrogenation process is the downflow fixed bed reactor, that is, the trickle bed reactor, but heavy oil products such as residual oil and coal liquefied oil are prone to poisoning of the hydrogenation catalyst or catalyst pores due to high impurity content. Blockage and rapid deactivation, and impurities may block the bed layer to cause a rapid increase in pressure drop, resulting in poor working conditions of the reactor, or even fa...

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Problems solved by technology

At present, the most commonly used in the hydrogenation process is the downflow fixed bed reactor, that is, the trickle bed reactor, but heavy oil products such as residual oil and coal liquefied oil are prone to poisoning of the hydrogenation catalyst or catalyst pores due to high impurity content. Blockage and rapid deactivation, and impurities may block the bed layer, causing a rapid increase in pressure drop, resulting in poor reactor conditions, or even failure to operate normally

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