Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Deep processing method of coal tar

A technology for deep processing and coal tar, applied in the direction of tar processing through distillation, separation methods, chemical instruments and methods, etc., can solve problems affecting equipment, affecting normal production, and reducing vacuum degree, so as to save maintenance time and cost, and guarantee The effect of continuous and stable operation and simple process flow

Active Publication Date: 2022-04-08
枣庄杰富意振兴化工有限公司
View PDF14 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the oil and gas extracted from the top of the vacuum tower contains more highly corrosive acid gas hydrogen sulfide, the oil and gas containing hydrogen sulfide will seriously corrode the impeller and disc in the vacuum pump when it is circulated through the vacuum pump, and the mechanical seal is sealed. Cavities, inner chambers, mechanical seals, baffles, spacer bolts, pump covers, bearing housings, bearing caps, bearings and other parts, resulting in leakage of mechanical seals and reduced vacuum, which seriously affect normal production. The labor intensity of maintenance personnel is high and maintenance The cost remains high, and it also seriously affects the equipment in the subsequent production process

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
  • Deep processing method of coal tar
  • Deep processing method of coal tar
  • Deep processing method of coal tar

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1 Technical process brief introduction of the present invention

[0044] During the deep processing of coal tar, the soft bitumen extracted from the bottom of the atmospheric distillation tower is heated to 370°C by a decompression heating furnace and enters the decompression tower 1. Under the action of the vacuum system, a negative pressure is formed in the tower to extract the product. The oil gas at the top of tower 1 enters the vacuum tank 3 under the action of the vacuum pump 2, and the oil gas in the vacuum tank 3 is washed by the washing oil input from the outside of the vacuum tank 3, and the washed oil gas enters the acid removal reaction tower 4, and after washing The liquid in the liquid seal tank 5 is transported to the liquid seal tank 5, and the gas in the liquid seal tank 5 is transported to the tail gas system (not shown) for treatment and discharged, and the liquid in the liquid seal tank 5 is transported to the vacuum pump 2 for circulation ...

Embodiment 2

[0047] a. The soft bitumen in the decompression tower 1 is subjected to decompression treatment: the soft bitumen extracted from the atmospheric distillation tower extraction pump (P84004A / B) is sent to the decompression heating furnace to be heated to a temperature of 370°C at the bottom of the tower, and the pressure is controlled Under the action of the vacuum system, the temperature in the tower is 265°C, the control pressure is -20Kpa, and the heavy oil B is extracted from here, and the heavy oil B is pumped out through the heavy oil B waste pot (P84102A / B), and part of it is refluxed , part of which is extracted to the heavy oil tank of CB oil. The temperature of the upper part of the tower is 85°C, the control pressure is -35Kpa, and the heavy oil A is produced from here, which is pumped out by the heavy oil A extraction pump (P84103A / B) and passed through the heavy oil A waste pot and the heavy oil A2# cooler, part of which is refluxed and part of which is extracted Af...

Embodiment 3

[0052] a. The soft bitumen in the decompression tower 1 is subjected to decompression treatment: the soft bitumen extracted from the atmospheric distillation tower extraction pump (P84004A / B) is sent to the decompression heating furnace to be heated to a temperature of 390 ° C at the bottom of the tower, and the pressure is controlled Under the action of the vacuum system, the temperature in the tower is 252°C, the control pressure is -22Kpa, and the heavy oil B is extracted from here, and it is pumped out by the heavy oil B pump (P84102A / B) and passed through the heavy oil B waste pot, and part of it is refluxed , part of which is extracted to the heavy oil tank of CB oil. The temperature of the upper part of the tower is 80°C, the control pressure is -32Kpa, and the heavy oil A is produced from here, which is pumped out by the heavy oil A extraction pump (P84103A / B) and passed through the heavy oil A waste pot and the heavy oil A2# cooler, part of which is refluxed and part o...

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

No PUM Login to View More

Abstract

The invention discloses a coal tar deep processing method, which comprises the following steps: conveying oil gas obtained by decompressing maltha in a vacuum tower into a vacuum tank, washing the oil gas by washing oil, feeding the washed oil gas into a deacidification reaction tower for deacidification, and conveying the deacidified oil gas into a liquid seal tank through a vacuum pump for circulation; the invention also discloses a structure of the deacidification reaction tower device. The process flow is simple, the acid removal effect is good, the maintenance time and cost are saved, and continuous and stable operation of production is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a coal tar deep processing method. Background technique [0002] At present, the deep processing of coal tar includes atmospheric distillation, vacuum distillation, and industrial naphthalene distillation. The soft bitumen extracted from the bottom of the atmospheric distillation tower is heated to 370°C by a vacuum heating furnace and enters the vacuum tower. Under the action of the vacuum system, a negative pressure is formed in the tower for product extraction, and the oil gas at the top enters the vacuum system. The oil gas at the top of the decompression tower enters the vacuum tank under the action of the vacuum pump, and washes the oil (used to wash out the absorption oil of benzene or naphthalene compounds from the gas, using its similar compatibility with coal tar and other components in petroleum, It is used to wash the gas generated in the fracti...

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): C10C1/14C10C1/16B01D53/78B01D53/40
CPCY02P20/10
Inventor 刘增温王德州郝升学杨建杰孙益香于观刚侯俊杰
Owner 枣庄杰富意振兴化工有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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