Pre-treatment system and pre-treatment method for producing non-corrosion sodium-free asphalt

A pretreatment and non-corrosion technology, applied in the processing of tar asphalt/petroleum asphalt/natural asphalt, tar processing, petroleum industry, etc., can solve problems such as time-consuming, inability to adapt, and difficult tank turnover

Active Publication Date: 2016-04-20
BAOWU CHARCOAL MATERIAL TECH CO LTD
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method adopts an intermittent washing process, and the stirring or beating cycle takes a long time. From feeding, adding water, heating, beating cycle, standing still to draining the water, it takes at least 7 days to process a tank, which has high requirements for inventory. , the tank turnover is difficult; the timing of adding waste water is before or during the tar cycle, and the oil-water mixing effect is poor; using artificial methods to release water is not only labor-intensive, but also incomplete, which affects the treatment effect
The application of intermittent water washing process takes a long time, consumes a lot of energy, and is labor-intensive, which cannot meet the needs of continuous production of asphalt

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
  • Pre-treatment system and pre-treatment method for producing non-corrosion sodium-free asphalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The tar was received in the raw material tank 1, and its Cl concentration was 20.0 μg / g, and its Na concentration was 9.8 μg / g. The tar was heated to 60°C while receiving the tar. Wastewater tank 2 stock up to 50m 3 , open the relevant valves, start the tar pump 5 and the waste water metering pump 3, the tar passes through the pipeline a, and the waste water passes through the pipeline b respectively through the first check valve 4 and the third check valve 4 "according to the oil-water weight ratio of 12:1 in static Mix in the mixer 6, enter the first feed distributor 7 in the middle of the separator 8 through the pipeline c, and continue to heat the tank to 80 ° C. After the tar has a residence time of about 6 hours, the upper layer of separated water is discharged from the lifting automatic drainage cylinder 9 is discharged, and enters the first ammonia water tank 10 through pipeline d, and ammonia water intermittently sends coal essence residual ammonia water; Afte...

Embodiment 2

[0057] The tar was received in the raw material tank 1, and its Cl concentration was 30.5 μg / g, and its Na concentration was 14.9 μg / g. The tar was heated to 65°C while receiving the tar. Wastewater tank 2 stock up to 100m 3 , open the relevant valves, start the tar pump 5 and the waste water metering pump 3, the tar passes through the pipeline a, and the waste water passes through the pipeline b respectively through the first check valve 4 and the third check valve 4 "according to the oil-water weight ratio of 10:1 in static Mix in the mixer 6, enter the first feed distributor 7 in the middle of the separator 8 through the pipeline c, and continue to heat the tank to 85 ° C. After the tar has a residence time of about 10 hours, the upper layer of separated water is discharged from the lifting automatic drainage cylinder 9 is discharged, and enters the first ammonia water tank 10 through pipeline d, and ammonia water intermittently sends coal essence to circulate ammonia wate...

Embodiment 3

[0059] The tar was received in the raw material tank 8, and its Cl concentration was 40.2 μg / g, and its Na concentration was 16.7 μg / g. Heat the tar to 75°C before washing in boiling water. Wastewater tank 2 stock up to 150m 3, open the relevant valves, start the tar pump 5 and the waste water metering pump 3, the tar passes through the pipeline a', and the waste water passes through the pipeline b respectively through the second check valve 4' and the third check valve 4 "according to the oil-water weight ratio of 8:1 Mix in the static mixer 6, enter the second feed distributor 7' in the middle part of the separator 1 through the pipeline c', and continue to heat to 90 ° C in the tank. After the tar is through the residence time of about 30h, the upper layer of separated water can be The lifting automatic drainage cylinder 9 is discharged, and enters the second ammonia water tank 10' through the pipeline d', and the ammonia water is intermittently sent to the coal essence ci...

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 provides a pre-treatment system and a pre-treatment method for producing non-corrosion sodium-free asphalt. The pre-treatment system includes a raw material trough for receiving tar, and a waste water trough. The raw material trough and the waste water trough are both connected to an inlet of a static mixer. An outlet on the static mixer is connected to a material inlet distributor which disperses raw materials. The material inlet distributor is disposed in the middle of a separator. An automatic water discharge apparatus is disposed in the separator and is connected to an ammonia water tank. The bottom of the separator is connected to a centrifugal machine. Through a continuous water-washing desalination process, majority of inorganic chlorine in the tar is removed, thereby achieving zero-addition of alkali during tar processing and controlling the content of the inorganic chlorine to be within a safe concentration range in a naphthalene oil section, so that an asphalt product produced through distillation is almost free of sodium ion. With continuous material feeding and water addition, the system mixes the raw materials uniformly, is good in water washing effect and is high in efficiency. With the automatic water discharge apparatus, the system greatly reduces labor intensity.

Description

technical field [0001] The invention belongs to the field of coal chemical industry, and in particular relates to a pretreatment system and method for producing non-corrosive and sodium-free asphalt. Background technique [0002] The impurity elements in the pitch directly affect the quality of the anode, and then affect the behavior of the anode in the electrolytic cell and the quality of the aluminum liquid. Na is thought to affect CO 2 The most reactive element not only increases the carbon consumption, but also causes the anode to be prone to slag and block accidents, which is the so-called sodium sensitivity. [0003] The concentration of Cl in the naphthalene oil section is as high as 50-800 μg / g when the tar is distilled without adding alkali. In order to reduce the intergranular corrosion, stress corrosion, and overall corrosion of the distillation equipment caused by Cl ions, Na is usually added to the raw tar 2 CO 3 Decompose the fixed ammonium salt, neutralize...

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): C10C1/00C10C3/00
Inventor 杜亚平刘明勇邵忠平
Owner BAOWU CHARCOAL MATERIAL 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
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap