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Energy saving method of industrial fluorene distillation tower used in absorber oil processing

A fractionation tower and industrial technology, which is applied to the energy saving field of industrial fluorene fractionation towers, can solve the problems of poor automation level and high energy consumption of industrial fluorene towers, and achieve the effects of continuous production operation, stable product quality and simple process flow.

Inactive Publication Date: 2011-04-06
天津市华瑞奕博化工科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The problem to be solved by the present invention is to propose an energy-saving method for the industrial fluorene fractionation tower in the oil washing process in view of the poor automation level and high energy consumption of the industrial fluorene tower in the deep processing of coal tar.

Method used

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  • Energy saving method of industrial fluorene distillation tower used in absorber oil processing
  • Energy saving method of industrial fluorene distillation tower used in absorber oil processing
  • Energy saving method of industrial fluorene distillation tower used in absorber oil processing

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Embodiment 1

[0045] The theoretical plate number of the industrial fluorene fractionation tower 9 is 40, the operating pressure at the top of the tower is normal pressure, and the reflux ratio is 6:1. The feeding position of heavy wash oil is the 15th plate, and the flow rate is 732.5kg / h. The acenaphthene fraction extracted from the top of the tower: heavy washing oil = 0.63:1 (mass ratio). After drying, the obtained industrial fluorene product is composed of 97.85% (mass fraction) by gas chromatography analyzer, and the recovery rate of dioxyfluorene reaches 82.4% %. The load of the tubular heating furnace 7 is 299.2KW, the steam generation rate of the steam generator 10 is 36kg / h, and the pressure of the steam produced is 0.4MPa.

Embodiment 2

[0047] The theoretical plate number of the industrial fluorene fractionation tower 9 is 30, the operating pressure at the top of the tower is normal pressure, and the reflux ratio is 7:1. The feeding position of heavy washing oil is the 18th plate, and the flow rate is 732.5kg / h. The acenaphthene fraction extracted from the top of the tower: heavy washing oil = 0.6:1 (mass ratio). After drying, the obtained fluorene product is composed of 97.69% (mass fraction) by gas chromatography analyzer, and the recovery rate of fluorene reaches 87.8%. The load of the tubular heating furnace 7 is 347.4KW, the steam generation rate of the steam generator 10 is 41kg / h, and the pressure of the steam produced is 0.4MPa.

[0048] The energy-saving effect of the present invention is obvious, and the energy-saving measures introduced into the process include two points: one is to use the flue gas of the tubular heating furnace to preheat the air to increase the temperature of the air entering th...

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Abstract

The invention discloses an energy saving method of an industrial fluorene distillation tower used in absorber oil processing. The method comprises the following steps of: feeding fluorene oil from a fluorene oil groove into an industrial fluorene distillation tower, condensing steam on the top of the tower by a steam generator on the top of the tower, partially flowing back, and extracting part of condensed liquid as fluorene distillate; feeding extracted fluorene distillate into a condenser to be condensed, and then feeding condensed fluorene distillate into an industrial fluorene crystallizer through a fluorene distillate pipe; and slowly cooling fluorene distillate entering the industrial fluorene crystallizer to a crystallization temperature, discharging and crystallizing in one step, and separating with a centrifuge after crystallization to obtain solid industrial fluorene products. The invention has the advantages of simple technical process, capability of realizing continuously production operation and stable product quality. Fluorene distillate entering the industrial fluorene crystallizer is fused, crystallized and slowly cooled, so that solvent recovery, environment pollution and other problems are avoided. An air preheater and the steam generator are introduced in the process, process residual heat is fully utilized, process thermal efficiency is further improved, and energy saving effect is remarkable.

Description

technical field [0001] The invention relates to the field of coal tar processing, more specifically, the invention relates to an energy-saving method for industrial fluorene fractionation towers in the processing of coal tar wash oil fractions. [0002] Background technique [0003] Coal tar is a viscous liquid produced during the high-temperature pyrolysis of coal in the coking oven carbonization chamber under the condition of isolation of air. Coal tar is a valuable organic chemical raw material, especially an important source of polycyclic aromatic hydrocarbons and aromatic heterocyclic compounds, some of which cannot or cannot be economically obtained from petrochemical raw materials, but the anthracene and acenaphthene produced by the coking industry Pyrene and pyrene can meet more than 90% of the world's demand, while almost 100% of industrially used carbazole and quinoline come from coking products. [0004] After preliminary processing of coal tar, light oil, pheno...

Claims

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Application Information

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IPC IPC(8): C10C1/08C07C13/567C07C7/04C07C7/14
CPCY02P20/10
Inventor 赵华
Owner 天津市华瑞奕博化工科技有限公司
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