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DCC splitting decomposition light oil processing technology

A processing technology and light oil technology, which is applied in the fields of hydrotreating technology, petroleum industry, and hydrocarbon oil treatment, etc., can solve the problems affecting the economic benefits of the device, high raw material density, and no processing technology, so as to promote promotion and application, reduce Sulfur and nitrogen, effect of increasing cetane number

Active Publication Date: 2015-11-11
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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  • DCC splitting decomposition light oil processing technology

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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 ~7.8MPa.

[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 The hydrogen consumption per ton of raw oil is 0.016 tons, and the hydrogen-mixed raw oil is obtained. The hydrogen-mixed raw 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 hydrogenation...

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 invention relates to the technical field of petrochemical engineering, in particular to a DCC splitting decomposition light oil processing technology. According to the technology improvement, a three-bed-layer reactor is designed, splitting decomposition light oil produced by a DCC device is subjected to deep hydrogenation and modification to be produced into national IV and national V diesel oil blending components. According to the technology, based on the principle of utilizing an original 40 million tons / year diesel hydrofining-hydrodewaxing device as much as possible and meeting the requirement of the splitting decomposition light oil hydrogenation process, improvement is conducted, the byproduct, splitting decomposition light oil of the DCC ethylene device is processed, and by means of the technology, sulfur and nitrogen in the splitting decomposition light oil can be obviously reduced, the cetane number of the splitting decomposition light oil can be increased, and the blending diesel components can be obtained. The DCC splitting decomposition light oil hydrogenation technology is initiative in China; by means of the successful operation of the technology, a reliable guarantee can be provided for stable running of the DCC device, and application and popularization of the DCC technology are greatly promoted.

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 1518mg / g, the nitrogen content is 1500mg / g, the cetane index is 14.6, and the free...

Claims

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Application Information

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Patent Type & Authority Applications(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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