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A device and method for hydrodistillation, separation and co-production of customized naphtha raw materials

A rectification separation and naphtha technology, which is applied in the petroleum industry, hydroprocessing process, and hydrocarbon oil treatment, can solve the problems of losing market opportunities and ordinary naphtha can not meet the bidding requirements of PX naphtha, and achieves The effect of improving comprehensive utilization rate, high added value of products and low cost

Active Publication Date: 2020-02-11
DONGYING JUNYUAN PETROLEUM TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In view of the above reasons, the ordinary naphtha of private refineries cannot meet the naphtha bidding requirements of PX and ethylene production enterprises, losing market opportunities

Method used

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  • A device and method for hydrodistillation, separation and co-production of customized naphtha raw materials
  • A device and method for hydrodistillation, separation and co-production of customized naphtha raw materials
  • A device and method for hydrodistillation, separation and co-production of customized naphtha raw materials

Examples

Experimental program
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Effect test

Embodiment 1

[0027]Raw material A (refer to the naphtha raw material properties table) is pretreated by high-efficiency alkali elution and desulfurization in the raw material blending unit, pumped by the feed pump 3 to the reactant outlet heat exchanger group 4 for heat exchange, mixed with hydrogen, and heated Furnace 7 is heated up to 155°C and enters the hydrogenation reaction unit, implements the preferred operating conditions of Example 1 (refer to the preferred operating conditions table), and performs secondary hydrogenation and adsorption reactions. Enter the high-pressure separator 13 for gas-liquid separation, the separated hydrogen is compressed by the circulating hydrogen compressor 5 and recycled again, the liquid-phase reactant after dehydrogenation enters the light removal tower A 15 through the low-pressure separator 14, and the distillation The ethylene naphtha raw material I with a temperature between 23°C and 80°C is pumped to the ethylene naphtha raw material I product t...

Embodiment 2

[0029] Raw material B (refer to the naphtha raw material properties table) is pretreated by high-efficiency alkali elution and desulfurization in the raw material blending unit, then sent to the reactant outlet heat exchanger group 4 through the feed pump 3 and mixed with hydrogen after heat exchange, and passed through the heating furnace 7. Heat up to 160°C and enter the hydrogenation reaction unit, implement the preferred operating conditions of Example 2 (refer to the preferred operating conditions table), carry out secondary hydrogenation and adsorption reactions, and the reaction products enter after heat exchange by the reactant outlet heat exchanger group 4 The high-pressure separator 13 performs gas-liquid separation, and the separated hydrogen is compressed by the circulating hydrogen compressor 5 and recycled again. The liquid-phase reactant after dehydrogenation enters the light removal tower A 15 through the low-pressure separator 14, and the distillation range is r...

Embodiment 3

[0031] Raw material C (refer to the naphtha raw material properties table) is pretreated by high-efficiency alkali elution and desulfurization in the raw material blending unit, then sent to the reactant outlet heat exchanger group 4 through the feed pump 3 and mixed with hydrogen after heat exchange, and passed through the heating furnace 7. Heat up to 155°C and enter the hydrogenation reaction unit, implement the preferred operating conditions of Example 3 (refer to the preferred operating conditions table), perform secondary hydrogenation and adsorption reactions, and the reaction products enter after heat exchange by the reactant outlet heat exchanger group 4 The high-pressure separator 13 performs gas-liquid separation, and the separated hydrogen is compressed and recycled by the circulating hydrogen compressor 5, and the liquid-phase reactant after dehydrogenation enters the high-efficiency separation tower 17 through the low-pressure separator 14, and the distillation ran...

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Abstract

The invention discloses an apparatus and a method of hydrogenation rectifying separation for coproducing a customized naphtha raw material. The apparatus includes: a raw material blending unit, a hydrogenation reaction unit, a rectifying separation unit and a product blending unit. The method includes the following processes: 1) a naphtha raw material is blended and is pumped to a heat exchanger set, at a reactant outlet, for being heat-exchanged, and then is fixed with hydrogen gas from a circulating hydrogen compressor and a fresh hydrogen feeding line; 2) the mixture is heated and is fed into the hydrogenation reaction unit to complete secondary hydrogenation, adsorption, and secondary dearomatization reaction; 3) the reactant is fed into the rectifying separation unit via a low-pressure separator; 4) according to ingredients of a liquid phase reactant, the reactant is divided into three flows to produce products, the customized naphtha raw materials. The apparatus has reasonable design, simple structure and excellent practicability. The whole apparatus has simple processes and simple and quick operations, is low in hydrogen consumption and energy consumption and is low in discharge of waste gas, waste liquid and solid wastes. The product can satisfy demands on the customized naphtha raw materials, is high in additional value, and has high economic benefit.

Description

technical field [0001] The invention relates to a device and method for hydrogenation, rectification, separation and co-production of customized naphtha raw materials, in particular to secondary hydrogenation, adsorption, selective secondary dearomatization and rectification in the separation process of customized naphtha raw materials for PX and ethylene projects The method belongs to the technical field of petroleum hydrocarbon hydrogenation rectification purification. Background technique [0002] The PX and ethylene industries are the source of downstream chemicals, and their downstream derivatives are closely related to people's basic necessities of life. my country is a populous country. After the rapid economic development in the past 30 years, the consumption capacity of urban and rural residents has increased rapidly, which has promoted the production capacity of my country's PX and ethylene projects. Growing rapidly. At present, domestic ethylene production has sur...

Claims

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Application Information

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IPC IPC(8): C10G67/00
CPCC10G67/00C10G2300/1044
Inventor 苗广发王兵杰
Owner DONGYING JUNYUAN PETROLEUM TECH DEV CO LTD
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