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A kind of dcc cracking light oil processing technology

A processing technology and light oil technology, applied in hydroprocessing technology, petroleum industry, processing hydrocarbon oil and other directions, can solve the problems of high density of raw materials, no processing technology, affecting the economic benefit of the device, etc., and achieve the improvement of cetane number, The effect of reducing sulfur and nitrogen, promoting promotion and application

Active Publication Date: 2017-03-15
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] Due to the characteristics of high raw material density and high aromatic content of DCC cracking light oil, there is no mature processing technology in China, which makes the market price of this raw material low, which seriously affects the economic benefits of the device.

Method used

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  • A kind of dcc cracking light oil processing technology
  • A kind of dcc cracking light oil processing technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] This embodiment provides a kind of DCC cracking light oil processing technology, such as figure 1 shown, including the following steps:

[0027] Step 1: The DCC cracked light oil from the tank area passes through the automatic backwash filter and the raw oil water separation tank to filter out solid impurities and cut out free water, then enters the raw material oil buffer tank, and then boosts the pressure to 6.8 through the high-pressure raw oil pump ~7.8 MPa.

[0028] Step 2: The new hydrogen from the pipeline network is pressurized to 6.8-7.8 MPa by the new hydrogen compressor, and then mixed with the boosted raw material oil obtained in step 1. The mixing ratio of new hydrogen and raw oil is: 1 1.6 tons of hydrogen is consumed per ton of raw material oil to obtain hydrogen-mixed raw material oil. The hydrogen-mixed raw material oil is heat-exchanged through heat exchanger C to 150-180°C and heat-exchanged to heat exchanger A to 250-280°C. ~320°, then enter the hy...

Embodiment 2

[0040] The following will be described in conjunction with specific implementation data.

[0041] First, the DCC cracking light oil from the tank area passes through the automatic backwash filter and the raw oil water separation tank to filter out solid impurities and cut off free water, then enters the raw oil buffer tank, and then boosts the pressure to 7.3MPa through the high-pressure raw oil pump On the other hand, the new hydrogen from the pipeline network is pressurized to 7.3MPa by the new hydrogen compressor, and then mixed with the boosted raw material oil obtained in step 1. The mixing ratio of new hydrogen and raw oil is: 1 The hydrogen consumption per ton of raw oil is 1.6 tons, and the hydrogen-mixed raw oil is obtained. The hydrogen-mixed raw oil passes through heat exchanger C to 165°C and heat exchanger A to 265°C, enters the reaction heating furnace to heat up to 312°, and then enters hydrogenation reactor.

[0042] In the hydrogenation reactor, the hydrogen-...

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Abstract

The present invention relates to the field of petrochemical technology, in particular to a process for processing DCC cracked light oil, which is designed with one set of three bed reactors, mainly to process the cracked light oil produced by the DCC device through deep hydrogenation, modification After quality, the blending components of national IV and national V diesel oil are produced. This process route is based on the principle of utilizing the original 400,000 tons / year diesel hydrofinishing-hydrodecondensation unit as much as possible, and can meet the requirements of cracking light oil hydrogenation process. Through transformation, it processes catalytic cracking (DCC) to produce ethylene This process can not only significantly reduce the sulfur and nitrogen in the pyrolysis light oil product by-product of the device, but also increase the cetane number of the pyrolysis light oil to obtain blendable diesel components. This process is the first DCC cracking light oil hydrogenation process in China. The successful commissioning of this process can not only provide a reliable guarantee for the stable operation of the DCC unit, but also greatly promote the promotion and application of the DCC process.

Description

technical field [0001] The invention relates to the field of petrochemical technology, in particular to a DCC cracking light oil processing technology, which utilizes cracking light oil products produced by catalytic cracking (DCC) ethylene production equipment on the market to produce blendable diesel oil components. 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 light oil, the density (20°C) is 0.9532g / cm3, the 95% distillation temperature is 293°C, the sulfur content is 1518μg / g, the nitrogen content is 1500μg / g, the cetane index is 14.6, and the free...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/00
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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