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Process for thermal polymerization processing of non-doped whole fraction ethylene heavy oil

A full-fraction, non-doping technology, applied in the field of petroleum refining, can solve problems such as differences in chemical composition and molecular structure, and achieve the effects of reduced residence time, low nitrogen content, and energy saving

Inactive Publication Date: 2019-04-12
张国辰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although it is rich in aromatic hydrocarbons, it is quite different from other raw materials for thermal polymerization processing in terms of chemical composition, molecular structure, etc.

Method used

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  • Process for thermal polymerization processing of non-doped whole fraction ethylene heavy oil
  • Process for thermal polymerization processing of non-doped whole fraction ethylene heavy oil
  • Process for thermal polymerization processing of non-doped whole fraction ethylene heavy oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Such as figure 2 The thermal polymerization processing equipment for doped full fraction ethylene heavy oil implements the thermal polymerization processing technology of ethylene heavy oil, specifically as follows, after the ethylene heavy oil is preheated at 160 degrees, it enters the heating furnace, and injects water with 2% of the raw material ethylene heavy oil. The convection section and radiant section of the heating furnace heat up rapidly to 460°C; the heated ethylene heavy oil enters the reactor, and the circulation ratio of the reactor is 5%, and a series of reactions such as cracking and condensation occur in the reactor to generate rich gas and solvent oil , Special carbon materials, special carbon materials are agglomerated in the kettle. The temperature of the oil and gas in the kettle is 440°C, which is cooled to 410°C by quenching oil, and then flows out from the top of the reactor and enters the oil and gas into the atmospheric fractionation tower fo...

Embodiment 2

[0070] As shown in Figure 2, the ethylene heavy oil is extracted from the raw material oil-gas separator, the normal pressure heat exchanger is preheated to 150°C, and the preheated ethylene heavy oil is sent to the heating furnace with a relay pump, and 2% of the raw material ethylene heavy oil is injected Water injection, heat exchange through the flue pipe of the heating furnace, and then enter the convection section and radiation section, and quickly heat up to 450°C; the heated ethylene heavy oil enters the reactor through the four-way valve, and thermal polymerization occurs in the reactor. The circulation ratio of the reactor is 8%, and rich gas and special carbon materials are generated, and the special carbon materials are agglomerated in the reactor. The temperature of the oil and gas in the kettle is 450°C, which is cooled to 410°C by quenching oil, and then flows out from the top of the reactor and enters the washing tower for washing. The liquid-phase washing heavy...

Embodiment 3

[0082] Such as figure 2As shown, the ethylene heavy oil is extracted from the raw material oil-gas separator, the normal pressure heat exchanger is preheated to 170°C, and the preheated ethylene heavy oil is sent to the heating furnace with a relay pump, and the water injection is 2% of the raw material ethylene heavy oil. Heat exchange through the flue pipe of the heating furnace, and then enter the convection section and radiation section, and quickly heat up to 470°C; the heated ethylene heavy oil enters the reactor through the four-way valve, and the circulation ratio of the reactor is 7%. A thermal polymerization reaction occurs in the kettle to generate rich gas and special carbon materials, and the special carbon materials are agglomerated in the kettle. The temperature of the oil and gas in the kettle is 445°C, which is cooled to 410°C by quenching oil, and then flows out from the top of the reactor and enters the washing tower; after washing, the liquid-phase washing...

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Abstract

The invention discloses a process for thermal polymerization processing of non-doped whole fraction ethylene heavy oil, the process comprises the following steps of: injecting water into preheated ethylene heavy oil, and heating the ethylene heavy oil in a heating furnace, wherein the temperature of an outlet of a furnace tube of the heating furnace is 440-470 DEG C; the heated ethylene heavy oilenters a reaction kettle for reaction, the oil gas generated by the reaction enters a normal pressure fractionating tower for distillation and separation, and a special carbon material is obtained inthe kettle. The process has the advantages of simple steps, no need of catalyst, no need of pre-treatment and no need of doping, is used for carrying out thermal polymerization processing on the wholefraction ethylene heavy oil, achieves the continuous production of the thermal polymerization processing process of the whole fraction ethylene heavy oil, the obtained fraction sections can be processed according to a conventional refinery production flow, the steps are simple, the catalyst is not needed, the operation conditions of the prior deep processing are not needed to be changed, the economic cost is saved, the production efficiency is improved, coking and black smoke generated by burning ethylene heavy oil only as fuel are avoided, the problem of environmental pollution is solved, and the economic value of the ethylene heavy oil is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of petroleum refining, and in particular relates to a process for thermal polymerization processing of non-doped full fraction ethylene heavy oil. Background technique [0002] With the development of the world economy, oil resources are gradually decreasing, and rational use of limited oil resources is particularly important for the oil refining industry. At present, the oil refining industry is facing a series of problems such as heavy crude oil and high vulcanization, which lead to further increase in demand for light oil. [0003] The composition of ethylene heavy oil is very complex, mainly including alkanes, C8-C15 aromatics, aromatic olefins and heterocyclic compounds, low in impurities such as sulfur and nitrogen, and basically free of metal impurities. The boiling range is between 218°C and 420°C. At present, ethylene heavy oil is mainly used as fuel, the overall utilization rate is not high, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G57/02
CPCC10G57/02
Inventor 张国辰
Owner 张国辰
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