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

Water-coal-slurry prepared by using benzene extraction residual liquid and preparation method of water-coal-slurry

A technology for extracting raffinate and coal-water slurry, which is applied in the field of petrochemical industry, can solve the problems of low gasification reaction temperature and large waste water discharge, achieve high carbon conversion rate, reduce discharge, and avoid high oxygen consumption

Pending Publication Date: 2020-11-24
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage of this method is that it can treat high-concentration organic waste liquid (COD content 100000mg / L). The disadvantage is that the gasification reaction temperature is relatively low. The amount of discharge is large, and further treatment is required at the discharge sewage treatment plant

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
  • Water-coal-slurry prepared by using benzene extraction residual liquid and preparation method of water-coal-slurry
  • Water-coal-slurry prepared by using benzene extraction residual liquid and preparation method of water-coal-slurry
  • Water-coal-slurry prepared by using benzene extraction residual liquid and preparation method of water-coal-slurry

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0059] Such as Figure 1 to Figure 2 Shown, for the present invention utilizes the concrete embodiment that the coal-water slurry prepared by benzene extraction raffinate is applied to the gasification process, comprises the following steps:

[0060] 1) Preparation of mixed coal

[0061] The first flat belt 22 for anthracite and the second flat belt 23 for bituminous coal are sent to the coal blending device 21 according to a certain ratio to prepare mixed coal, and then sent to the rod mill 2 by the third flat belt 24 . The coal blending device is equipped with a belt scale, PLC control system, and an impeller-type coal feeder with adjustable speed. The weight mixing ratio between bituminous coal and anthracite is adjusted by PLC, and the mixed coal with ash content Aad8-20%, ash melting point 1300-1450 DEG C and internal water Mad less than 6% is prepared.

[0062] The bituminous coal is selected to use Shenyou 2# bituminous coal produced by Shenhua Company with low ash co...

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 present invention discloses water-coal-slurry prepared by using benzene extraction residual liquid and a preparation method of the water-coal-slurry. The water-coal-slurry comprises the followingcomponents in parts by weight: 600-800 parts of mixed coal, 150-400 parts of benzene extraction residual liquid and 0.1-10 parts of an additive; the mixed coal is composed of bituminous coal and anthracite, and the weight ratio of the bituminous coal to the anthracite is 5:1 to 1:5. The benzene extraction waste liquid is used to replace fresh water, the anthracite and bituminous coal are mixed, the prepared water-coal-slurry has no corrosion to rod mills, good slurryability and high ash melting point, a water-wall gasifier is used to gasify the water-coal-slurry, gasification reaction temperature is high, oxygen consumption is low, carbon conversion rate is high, COD content and sewage discharge of discharged gasified sewage of the gasifier are low, resource utilization of the benzene extraction residual liquid is realized, and at the same time, adaptability of coal types is improved.

Description

technical field [0001] The invention relates to a coal-water slurry prepared by using benzene extraction raffinate and a preparation method thereof, belonging to the technical field of petrochemical industry. Background technique [0002] Caprolactam is an important organic chemical raw material. In my country, caprolactam is mainly produced by cyclohexanone ammoximation. The Beckmann rearrangement process unit of the cyclohexanone ammoximation method produces a large amount of benzene extraction raffinate. The appearance of the benzene extraction raffinate is light red transparent liquid with a slight odor, strong acidity (pH value 3-6), large yield, complex composition (ammonium sulfate content 5-7%, caprolactam content 0.2-1.0%), COD It is characterized by high content (50-150g / L), and is a typical refractory high-concentration organic waste liquid. Taking a caprolactam plant with an annual output of 300,000 tons as an example, the output of benzene extraction raffinat...

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): C10L1/32C10L1/24
CPCC10L1/324C10L1/2437C10L1/2475
Inventor 宋星星何建辉叶莲祥黄敬相立中胡元旭旷志刚毛伟王贵顺蒋葱蓝马芳
Owner CHINA PETROLEUM & CHEM CORP
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