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

Coating material for coal, modified coal, process for the production of coating material for coal, and process for production of modified coal

A manufacturing method and coating agent technology, applied in the petroleum industry, solid fuel, coke oven, etc., can solve the problems of coal not necessarily softening and melting characteristics, achieve homogeneity and stable quality, realize long-term use, and suppress the reduction of calorific value Effect

Inactive Publication Date: 2009-02-11
KOBE STEEL LTD
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the coal with the most suitable softening and melting properties is selected from the limited coal types, but the coal selected in this way may not have the most suitable softening and melting properties

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
  • Coating material for coal, modified coal, process for the production of coating material for coal, and process for production of modified coal
  • Coating material for coal, modified coal, process for the production of coating material for coal, and process for production of modified coal
  • Coating material for coal, modified coal, process for the production of coating material for coal, and process for production of modified coal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0070] [Preparation of coating agent]

[0071] Coal A (lignite) with a water content of 30% by weight and methylnaphthalene were mixed, and extracted using a pressure vessel at a temperature of 360° C., a pressure of 2 MPa, and a time of 1 hour. After the extraction, an extract (a mixed solution of a coating agent and methylnaphthalene) is collected by solid-liquid separation, and methylnaphthalene is distilled off from the extract to obtain coal B (corresponding to the coating agent) as extracted carbon.

[0072] [the coating to coal]

[0073] Coal A and 5% by weight, 10% by weight, 12% by weight, or 20% by weight of coal A of coal B were stirred and mixed with methylnaphthalene at 360° C. to obtain a slurry. Methylnaphthalene was removed from the slurry by distillation to obtain coal A coated with coal B as an upgraded coal.

[0074] In order to investigate the pyrophoric property and hygroscopicity of coal A coated with coal B obtained by the above method, the following o...

Embodiment 2-7

[0082] The extraction solvent (methylnaphthalene) and pulverized bituminous coal (coal C) or lignite (coal D) are prepared into a slurry-like mixture at a weight ratio of 80:20. Next, the slurry-like mixture was subjected to extraction treatment for 1 hour under the conditions of a temperature of 370° C. and a pressure of 2 MPa. Then, a gravity settling tank is used, the extract liquid is taken out from the upper part of the settling tank, and the slurry-like mixture composed of the extract liquid and the extraction residue is taken out from the lower part. Thereafter, the mixture was prepared by changing the ratio of the extract taken out from the upper part of the gravity settling tank and the slurry-like mixture taken out from the lower part. Next, the extraction solvent is removed by evaporative drying to obtain coal.

[0083] The softening and melting properties were evaluated using industrial analysis values ​​(measured according to JIS M 8812) and Gisler plastometer me...

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

A coating material for coal consisting of components of raw coal for coating material which are soluble in a non-proton-donating solvent. The components are contained in an extract obtained by a process comprising the extraction step of mixing the raw coal with a non-proton-donating solvent and extracting soluble components of the raw coal into the solvent and the solid-liquid separation step of separating an extract from an extraction residue. Modified coal can be obtained by applying the coating material to coal.

Description

technical field [0001] The present invention relates to a coating agent for coal for suppressing the hygroscopicity and spontaneous ignition of coal, a method for producing the coating agent, upgraded coal using the coating agent, and the production of the upgraded coal method. Background technique [0002] Conventionally, when coal is stored in a stockpile or in a silo, the temperature of the stored coal rises due to low-temperature oxidation heat storage, and as a result, spontaneous combustion occurs. Sub-bituminous coal and lignite with a low degree of carbonization not only have many functional groups containing oxygen ions but also have a well-developed pore structure. Therefore, when they are in a dry state, they are much easier to spontaneously ignite than coals with a high degree of carbonization such as bituminous coal. Therefore, it is difficult to store raw coal of sub-bituminous coal and lignite for a long period of time. In long-term storage of coal, temperat...

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): C10L5/00C10B57/08
Inventor 奥山宪幸古谷敦志小松信行
Owner KOBE STEEL LTD
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