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A dcc cracking naphtha processing technology

A processing technology and naphtha technology, which is applied in the petroleum industry, hydroprocessing technology, hydrocarbon oil treatment, etc., can solve the problems of low sales price and affecting the economic benefits of the device, etc.

Active Publication Date: 2017-03-08
陕西延长石油(集团)有限责任公司榆林炼油厂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There is no mature processing technology for DCC cracking naphtha in China, which makes the market price of this raw material low and seriously affects the economic benefits of the device

Method used

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  • A dcc cracking naphtha processing technology

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The present embodiment provides a kind of DCC cracking naphtha processing technology, such as figure 1 shown, including the following steps:

[0028] Step 1: The DCC cracked naphtha from the tank area is filtered through a raw material oil filter to remove particles with a particle size greater than 25 μm in the raw material and enter the raw material oil buffer tank. The raw material oil coming out of the raw material buffer tank bottom is added The hydrogen reaction feed pump boosts the pressure to 7.0-7.9MPa.

[0029] Step 2: The new hydrogen from the pipeline network is pressurized to 7.0-7.9MPa by the new hydrogen compressor, and then mixed with the boosted raw material oil obtained in step 1 to obtain a hydrogen-mixed raw material oil, in which new hydrogen and raw material The mixing ratio of oil is: 1 ton of raw material oil mixed with 1.14 tons of hydrogen. The hydrogen-mixed raw oil passes through the heat exchanger C to exchange heat to 170-200°C, and then ...

Embodiment 2

[0043] The following will be described in conjunction with specific implementation data.

[0044] Firstly, the DCC cracked naphtha from the tank area is filtered through a raw oil filter to remove particles with a particle size larger than 25 μm in the raw material and then enters the raw material oil buffer tank, and the raw material oil from the bottom of the raw material buffer tank is hydrogenated The reaction feed pump boosts the pressure to 7.5MPa; on the other hand, the new hydrogen from the pipeline network is pressurized to 7.5MPa by the new hydrogen compressor, and then mixed with the boosted raw material oil obtained above to obtain a mixed hydrogen For raw oil, adjust the pump speed so that the mixing ratio of new hydrogen and raw oil satisfies: 0.0141 tons of hydrogen for 1 ton of raw oil. The hydrogen-mixed raw oil passes through the heat exchanger C to exchange heat to 185°C, and then enters the first hydrogenation reactor.

[0045] In the first hydrogenation r...

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Abstract

The present invention relates to the technical field of petrochemical industry, specifically a DCC cracking naphtha processing technology, after the DCC cracking naphtha undergoes a stage of hydrogenation treatment, diolefins are removed, and then enters a second stage hydrogenation reactor for desulfurization and desulfurization After nitrogen refining, carry out fractionation and segmentation treatment, and after separating the depentanized oil component, the oil phase at the bottom of the tower and the heavy component de-benzene extraction device separates benzene, and other components are used as gasoline blending components. The DCC cracking naphtha processing technology of the present invention successfully transforms the original 200,000 tons / year diesel hydrogenation-hydrodecondensation device into a 200,000 tons / year DCC cracking naphtha hydrogenation device, which can not only saturate DCC Cracking olefins in naphtha can also reduce sulfur and nitrogen in the product to less than 1ppm, meet the requirements of the feed index of the benzene extraction unit, and obtain high-octane gasoline components.

Description

technical field [0001] The present invention relates to the technical field of petrochemical industry, specifically a DCC cracking naphtha processing technology, which utilizes the cracking naphtha product produced by the catalytic cracking (DCC) ethylene plant on the market to produce high-syringne naphtha that reaches the national V index Alkane gasoline. Background technique [0002] Catalytic cracking / catalytic pyrolysis (DCC / CPP) process is based on fluid catalytic cracking (FCC) technology, using heavy oil as raw material to produce gaseous olefins mainly propylene and ethylene, and some liquid products. Since the catalyst and operating conditions used in the DCC process are different from the traditional FCC technology, the properties of its liquid products are also quite different. According to the properties of DCC naphtha, the sulfur content is 240-450 (μg / g), the aromatics content is 68-75 (v%), the benzene content is 8.2-9.6 (v%), and the diene value is 2-10 (gI...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/14
Inventor 李军曹培宽高怀荣李明星王军峰康钰海魏春宏张建虎秦广华杨小平张海涛倪小斌唐凤岐贾巨荣王彦龙姬向国李亚敏白小春
Owner 陕西延长石油(集团)有限责任公司榆林炼油厂
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