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

Pretreatment method and pretreatment device before low temperature coal tar hydrogenation

A low-temperature coal tar pretreatment technology, applied in the direction of dehydration/emulsification by chemical methods, only multi-stage serial refining process treatment, refining by dialysis, etc., can solve the problem of high water content in coal tar and difficult separation of oil and water , Coal tar separation and other problems, to achieve the effect of speeding up work efficiency, increasing utilization rate, and low equipment requirements

Inactive Publication Date: 2018-11-13
HENAN DRAGON INTO COAL TECH CO LTD +2
View PDF3 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Most of low-temperature coal tar has a density less than that of water, and a small part has a density greater than that of water. Light coal tar can be separated from water and heavy coal tar, but after a long period of standing, the short-term Because the density of coal tar is close to the density of water within a certain period of time, it is difficult to separate oil and water, or the water content of the separated coal tar is high, especially when the coal tar contains more impurities such as coal powder and colloids, the separation of coal tar and water is more difficult. Disaster

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
  • Pretreatment method and pretreatment device before low temperature coal tar hydrogenation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] This embodiment provides a low-temperature coal tar pretreatment device 100 before hydrogenation, which includes a mixer 110, a desalination device 120, a tube furnace 130, and a flash tower 140. Among them, the mixer 110, the desalination device 120, the tube furnace 130 and the flash tower 140 are connected in series in sequence.

[0045] The mixer 110 is a place for mixing low-temperature coal tar, light oil, demulsifier, and desalinated water. The discharge end of the mixer 110 is communicated with the feed end of the filter 150. After the low-temperature coal tar, light oil, demulsifier and desalinated water are fully mixed in the mixer 110, the resulting mixed components are sent to the filter 150 Medium filtration to remove mechanical impurities, coal powder, asphalt, colloids, etc.

[0046] Further, the pretreatment equipment 100 before the low-temperature coal tar hydrogenation, also includes a heat exchanger 160, a condenser 180.

[0047] The gas phase of the flash...

Embodiment 2

[0050] This embodiment provides a pretreatment method before low-temperature coal tar hydrogenation, which adopts the pretreatment equipment 100 provided in Embodiment 1, and the specific steps include:

[0051] S1. Add low-temperature coal tar and No. 120 solvent oil, which accounts for 20% of its mass, into the mixer 110 and mix thoroughly to obtain a mixed oil with a density of 0.976 kg / L.

[0052] S2. Add demulsifier and desalinated water to mixer 110, and stir to obtain mixed components. Wherein, the mass ratio of the mixed oil, the desalinated water and the demulsifier is 100:9:0.04.

[0053] S3. The above-mentioned mixed components are heated to 120°C and transported to the filter 150 to filter out mechanical impurities, coal powder, asphalt, colloids and other substances.

[0054] S4. Keep the filtered mixed components at 120° C. and transport them to the desalination equipment 120 for desalination. After desalination, the moisture content is determined to be 0.35 wt%.

[0055]...

Embodiment 3

[0060] This embodiment provides a pretreatment method before low-temperature coal tar hydrogenation, and the specific steps include:

[0061] S1. Mix low-temperature coal tar with n-heptane accounting for 15% of its mass to obtain a mixed oil with a density of 0.970 kg / L.

[0062] S2. Mix the above mixed oil with demulsifier and desalinated water to obtain mixed components. Among them, the mass ratio of mixed oil, desalinated water and demulsifier is 100:7:0.036.

[0063] S3. Heat the above-mentioned mixed components to 140°C, filter and filter out mechanical impurities, coal powder, asphalt, colloids and other substances.

[0064] S4. Keep the filtered mixed components at 140°C for desalination, and the moisture content is determined to be 0.43 wt% after desalination.

[0065] S5. Heating the oil phase component obtained after desalination to 180° C., and then flashing to separate the gas phase component and the liquid phase component, and the gas phase component is condensed and reco...

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
boiling pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a pretreatment method before low temperature coal tar hydrogenation and relates to the technical field of coal tar pretreatment. Low-temperature coal tar is mixed with light oil with the density of 0.65-0.75 kg / L to obtain mixed oil, then the mixed oil is mixed with desalted water and a demulsifier, and electro-desalting and / or film desalting treatment is performed. According to the pretreatment method, the mixed oil with lower density is formed by blending the light oil with the low-temperature coal tar with the density close to the density of water, the mixed oil is more easily separated from water, the working efficiency of a follow-up desalting step is improved, and the utilization rate of effective ingredients in the low-temperature coal tar is improved. The pretreatment method has the advantages of being simple in operation, practical, low in device requirement, quick and efficient in separation and suitable for large-scale industrial production. The invention also provides a pretreatment device before low temperature coal tar hydrogenation. The pretreatment device is simple in structure, convenient to use and suitable for industrial production.

Description

Technical field [0001] The invention relates to the technical field of coal tar pretreatment, in particular to a pretreatment method and pretreatment equipment before low-temperature coal tar hydrogenation. Background technique [0002] Coal tar contains mechanical impurities, moisture, salt, etc., which have a significant impact on the deep processing of coal tar. Therefore, coal tar is often pretreated before hydrogenation to reduce mechanical impurities, moisture, and salt in coal tar as much as possible Content to meet the low cost, full load and normal operation of coal tar hydrogenation. [0003] In the past, most of the coal tar was the by-products of coking, blue carbon, and coal gasification, and belonged to medium and high temperature coal tar. The density of coal tar was mostly greater than the density of water, and the density of water was quite different, so these coal tar oils It is relatively easy to separate from water. Because of the high pitch of medium and high ...

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): C10G33/02C10G33/04C10G31/11C10G53/02
CPCC10G33/02C10G31/11C10G33/04C10G53/02
Inventor 朱书成白太宽王希彬白书林王世威
Owner HENAN DRAGON INTO COAL TECH CO LTD
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com