High-efficiency continuous washing separation tower and dephenolized fraction separation method

Abstract

The invention relates to a high-efficiency continuous washing separation tower and a dephenolized fraction separation method. The high-efficiency continuous washing separation tower comprise a tower body, an L-shaped feeding buffer, a pipeline mixer and a heater; the lower portion of the tower body is provided with a neck down section, and the neck down section divides the tower body into an uppertower body and a lower tower body; the top of the upper tower body is provided with a blow off port, the upper portion of the upper tower body is provided with a dephenolized fraction outlet and a steam inlet, the lower portion of the upper tower body is provided with a raw material mixture inlet, the lower tower body is provided with a condensate water outlet and a sodium phenolate solution outlet; the tower body is internally provided with the heater, the heater penetrates through the upper tower body, the neck down section and the lower tower body, the upper end of the heater is connectedwith the steam inlet, the lower end of the heater is connected with the condensate water outlet. The high-efficiency continuous washing separation tower effectively solves the problem that the interface separation of a sodium phenolate solution and a dephenolized fraction is unclear in conventional separation equipment, the separation effect of the sodium phenolate solution and the dephenolized fraction is ensured, the structure is simple, the operation is stable, and the control is easy.

Description

technical field [0001] The invention relates to the technical field of metallurgical coking, in particular to a high-efficiency continuous washing separation tower and a method for separating a sodium phenate solution and a dephenolized fraction. Background technique [0002] At present, in the metallurgical coking industry, continuous washing and dephenolization is mainly aimed at high-phenol fractions such as phenol oil fractions, naphthalene oil fractions, or phenol-naphthalene washing triple-mixed fractions cut from tar distillation, using 10-15% NaOH solution or alkali The sodium phenate solution is added to the high phenol fraction before the pump, and after being fully mixed by the pump impeller, it is sent to the continuous washing separation tower. In the continuous washing separation tower, NaOH reacts with the phenol in the high phenol fraction to form a sodium phenate solution and a dephenolic fraction; The material continuously enters the continuous washing sepa...

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Problems solved by technology

[0010] The invention provides a high-efficiency continuous washing separation tower and a method for separating the sodium phenate solution and the dephenolized fraction, which effectively solves the problem of unclear interface separation between the sodium phenate solution and the dephenolized fraction in conventional separation equipment, and ensures that the sodium phenate solution and the dephenolized fraction are separated. The separation effect of the phenol fraction, the equipment structure is simple, the operation is stable, and it is easy to control

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