Unlock instant, AI-driven research and patent intelligence for your innovation.

Processing method and processing system of diesel oil raw material

A technology for raw materials and diesel oil, applied in the petroleum industry, hydrotreating process, processing hydrocarbon oil, etc., can solve the problems of low olefin yield and unreasonable utilization of coking diesel light fractions, and achieve the effect of high yield

Active Publication Date: 2020-01-07
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Chinese patent CN101139529A discloses a coking diesel oil-steam cracking combined process method. The method uses heavy hydrocoked diesel oil as raw material, and the oil produced after fixed bed hydrotreating is used for fraction cutting. The cutting point is 260-320°C. The hydrogenated heavy components directly enter the cracking furnace, and the final yield of low-carbon olefins ethylene, propylene and butadiene is about 27%. This patent can effectively expand the utilization field of coking diesel, but the light in coking diesel Fractions are not utilized rationally, resulting in lower yields of final olefins

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Processing method and processing system of diesel oil raw material
  • Processing method and processing system of diesel oil raw material
  • Processing method and processing system of diesel oil raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] This embodiment adopts figure 1 The process flow diagram shown is carried out, and the specific steps are as follows:

[0105] The diesel raw material D is introduced into the diesel fractionation tower 2 and separated into light diesel oil fraction E with a distillation range 230 °C according to the cut point of 230 °C, diesel raw material D, light diesel oil fraction E and heavy diesel oil fraction The properties of diesel fraction F are shown in Table 1. The heavy diesel oil fraction is introduced into the hydrofinishing reactor 5 for hydrofinishing treatment to obtain a hydrofinishing reaction effluent.

[0106] The hydrotreating reaction effluent is introduced into the separator 10 for separation, and the hydrogen-rich gas in the gas phase product at the top of the separator 10 obtained after separation is processed by the circulating hydrogen compressor 6 and then mixed with new hydrogen to obtain mixed hydrogen. For recycling back to the hydrofinishing reactor ...

Embodiment 2

[0118] Embodiment 2 adopts the technological process identical with embodiment 1 to carry out, and difference is, the reaction conditions and the product distribution of the hydrofinishing reactor of embodiment 2 are as shown in table 3, and the reaction conditions of catalytic cracking reactor are as shown in table shown in 4. The product distribution obtained by the method of Example 2 is shown in Table 4.

Embodiment 3

[0123] Present embodiment adopts the method similar to embodiment 1 to carry out, difference is, the reaction temperature in the 3rd catalytic cracking reactor of the catalytic cracking reaction zone of present embodiment is higher than the reaction temperature in the second catalytic cracking reactor 50 °C, specifically, the reaction conditions and product distribution of the hydrofinishing reactor in this embodiment are shown in Table 3, and the reaction conditions of the catalytic cracking reactor are shown in Table 4. The product distribution obtained by the method of this embodiment is shown in Table 4.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to a processing method and a processing system of a diesel oil raw material. The method comprises: separating a diesel oil raw material into a light diesel oil distillate and a heavy diesel oil distillate; carrying out hydrofining treatment on the obtained heavy diesel oil distillate to obtain a hydrofined product; carrying out a first catalytic cracking reaction on the obtained hydrofined product; carrying out a second catalytic cracking reaction on the obtained first catalytic cracking product and a semi-spent catalyst; carrying out a third catalytic cracking reaction on the obtained light diesel oil distillate to obtain a third catalytic cracking product and a second spent catalyst; separating the obtained second catalytic cracking product and the obtained third catalytic cracking product to obtain a low-carbon olefin product, a light naphtha product, a heavy naphtha product, a circulating oil product and an oil slurry product; and carrying out aromatic hydrocarbon extraction on the obtained heavy naphtha product, introducing the obtained raffinate oil into a third catalytic cracking reactor, and carrying out a third catalytic cracking reaction. The methodand the system provided by the invention can improve the yield of propylene, butene and aromatic hydrocarbons.

Description

technical field [0001] The invention relates to a processing method and system for diesel raw materials. Background technique [0002] Ethylene, propylene and light aromatics (benzene, toluene and xylene, referred to as BTX) are basic chemical raw materials, and the traditional petrochemical industry is based on steam cracking to produce ethylene. In my country, the main raw material for steam cracking is naphtha, and the crude oil in my country is generally heavy, the yield of light oil is low, and the production raw materials for steam cracking are obviously insufficient. Therefore, the traditional steam cracking process is restricted by the supply of raw materials in my country. , the wide application of steam cracking devices using shale gas as raw material in North America continues to squeeze the economics of using naphtha as raw material for ethylene cracking. Compared with the ethylene product market, propylene has been less impacted by the shale gas revolution, and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10G67/02
CPCC10G67/02C10G2400/20C10G2400/30
Inventor 鞠雪艳习远兵孟勇新王哲任亮朱根权
Owner CHINA PETROLEUM & CHEM CORP