Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Combined process for preparing fuel oil by hydro-cracking and hydro-upgrading of coal tar

A hydrogenation upgrading and combined process technology, applied in the field of coal chemical industry, can solve the problems of no further utilization of heavy components, low utilization of raw materials, low utilization rate of coal tar, etc., to improve product quality and reduce coke yield , The effect of reducing the incidence of coking

Active Publication Date: 2014-03-12
WUHAN KELIN FINE CHEM +1
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In patent CN1351130A, the coal tar is fractionated first, and the light fraction is hydrogenated and upgraded without further utilization of the heavy fraction. The disadvantage is that the raw material utilization is low
Patent CN1141362C discloses a coal tar hydrogenation method. Coal tar and hydrogen enter a stable hydrogenation reactor filled with a hydrogenation protecting agent and a hydrofining catalyst. The disadvantage of this method is that the coal tar is not treated before hydrogenation. Certain treatment, in the process of hydrogenation due to strong exothermic temperature and local coking
Patent CN1903994A discloses a method for producing fuel oil by hydrogenation and upgrading of coal tar. In this method, coal tar and diluent oil are mixed in proportion for hydrogenation and upgrading. Although the occurrence of coking is slowed down to a certain extent, the activity of coal tar The group still exists, and there is also the possibility of further polymerization and coke
Patent CN101429456A discloses a coal tar delayed coking hydrogenation combined process method, which combines coal tar delayed coking and hydrogenation processes to obtain high-quality liquefied gas, fuel oil and lubricating oil base oil, but the disadvantage is that the liquid Low yield, high coke yield, low utilization rate of coal tar

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
  • Combined process for preparing fuel oil by hydro-cracking and hydro-upgrading of coal tar
  • Combined process for preparing fuel oil by hydro-cracking and hydro-upgrading of coal tar
  • Combined process for preparing fuel oil by hydro-cracking and hydro-upgrading of coal tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1~3

[0018] The embodiment of this solution is described in conjunction with the flow chart of the device to further illustrate the present invention.

[0019] combine figure 1The coal tar raw material 1 is put into the cracking and fractionating tower 2, and the heavy component oil 3 with a temperature greater than 360°C is fractionated and sent to the cracking heating furnace 6 for recycling, and the light component oil 4 with a fractional distillation temperature lower than 360°C is sent to the hydrofining process, The heavy component oil 3 preheated to 320-420°C is mixed with hydrogen 5 and sent to the cracking heating furnace 6, heated to 400-480°C and entered into the hydrogen cracking towers 7 and 8 for cracking reaction. During operation, the reaction pressure of the cracking tower is controlled to 0.28MPa, and the temperature is controlled at 450~550°C. The ratio of hydrogen to oil is controlled as follows: Case 1 is 0; Case 2 is 20:1; Case 3 is 40:1. The two hydrocracki...

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
specific surface areaaaaaaaaaaa
strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a combined process for preparing fuel oil by hydro-cracking and hydro-upgrading of coal tar, and belongs to the field of coal chemical industries. The coal tar is fractionated through a fractionating tower, then heavy component oil whose boiling point is larger than 360 DEG C and light component oil whose boiling point is lower than 360 DEG C are obtained, the heavy component oil is subjected to a cracking reaction under a hydrogen condition, generated oil formed in the cracking reaction goes back to the fractionating tower, the light component oil whose boiling point is lower than 360 DEG C is subjected to hydro-refining and hydro-cracking systems, so that gasoline and diesel blended components of high quality can be obtained. According to the invention, coke generated is obviously reduced, polymerization and condensation of unsaturated hydrocarbons such as olefin, aromatic hydrocarbons and the like are inhibited, the incidence of coking is reduced, the yield of liquid products obtained through a delayed coking process is improved, working periods of devices are prolonged, and equipment investment is reduced. According to the invention, products of high quality can be produced, and the utilization rate of the coal tar is improved, thereby bringing substantial economic benefits and facilitating environment protection.

Description

technical field [0001] This patent belongs to the field of coal chemical industry, and relates to a new combined process of coal tar hydrocracking and hydrogenation upgrading to produce fuel oil. Background technique [0002] Energy is an important material basis for the sustainable development of the national economy. The current world energy consumption structure is still dominated by petroleum energy consumption. According to the proven reserves and exploitation of crude oil in the world, it is estimated that by the middle of the 21st century, oil consumption will gradually decrease in the energy consumption structure, the proportion of natural gas consumption will increase significantly, and the proportion of coal consumption will basically remain the same. The overall energy situation will gradually transform from oil-based to natural gas-based, and then to coal-based. my country is a country that is short of oil resources, short of natural gas resources, and relative...

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): C10G65/12
Inventor 王国兴牟湘鲁张先茂王泽王栋斌陈凯
Owner WUHAN KELIN FINE CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products