Test device for gas adsorption and desorption characteristics of pre-adsorption moisture coal sample and test method of test device

An adsorption-desorption and characteristic testing technology, applied in the field of gas experiments, can solve the problems of inability to overcome interfacial tension, inability to reduce the influence of adsorption and desorption characteristics, inability to reflect the law of influence, etc., and achieve the effect of simple test method, wide practicability and simple structure

Inactive Publication Date: 2018-03-30
SHIJIAZHUANG TIEDAO UNIV
View PDF6 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In fact, due to the influence of pore interfacial tension, liquid water cannot overcome the interfacial tension and enter the small pores and micropore systems. Therefore, the method of injecting liquid water cannot reflect the influen

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
  • Test device for gas adsorption and desorption characteristics of pre-adsorption moisture coal sample and test method of test device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0044] Different saturated solutions of inorganic salts can form wet environments with different relative humidity, so that coal samples with different internal moisture contents can be made to saturate K 2 SO 4 The solution is taken as an example and the test method of the present invention is described as follows:

[0045] (a) Distilled water at a temperature of 60°C and a certain amount of K 2 SO 4 Particles were mixed to prepare a saturated solution at 60°C, and then K 2 SO 4 The saturated solution is poured into the glass vacuum vessel 6 and the solution is returned to room temperature, then the glass vacuum vessel 6 is sealed to form a wet environment with a relative humidity of 96%. Pack into the coal sample tank 10, tighten and seal;

[0046] (b) Close valve F1, valve F2, valve F4 and valve F7, open valve F3, valve F5 and valve F6, and open high-pressure helium cylinder 4 and pressure reducing valve JF1 to fill helium with a pressure of 5~7MPa, observe A high-pre...

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
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention discloses a test device for gas adsorption and desorption characteristics of a pre-adsorption moisture coal sample and a test method of the test device for the gas adsorption and desorption characteristics of the pre-adsorption moisture coal sample. The device comprises a vacuum pumping system, an inflation system, a constant temperature system, a water adsorption system and a gas adsorption-desorption test system. The device can change the intrinsic water content of the coal sample through the water adsorption system, so that the gas adsorption and desorption characteristics ofthe coal sample under different intrinsic moisture content conditions and influencing laws of intrinsic water can be studied, and then evolution laws of gas adsorption and desorption properties of in-situ coal reservoirs, especially low rank coal with higher intrinsic moisture content characteristics can be better reflected, effective prevention and control of coal seam gas disasters are facilitated, and reliable evaluation of coal seam gas (gas) resources is helped. The device disclosed by the invention is simple in structure, simple in test steps and good in using effect.

Description

technical field [0001] The invention belongs to the technical field of gas experiments, and in particular relates to a gas adsorption and desorption characteristic testing device for pre-adsorbed moisture coal samples, which is mainly suitable for simulating the gas adsorption and desorption characteristics of in-situ coal reservoirs under different internal moisture content conditions in the laboratory . Background technique [0002] The "Energy Development Strategic Action Plan (2014-2020)" formulated by the State Council states that "by 2020, the proportion of national coal consumption will be controlled within 62%". Therefore, for a long time to come, my country's coal-based primary energy structure is still difficult to change. Coalbed methane (gas) is formed during coal formation and is stored in coal reservoirs as methane (CH 4 ) as the main gas mixture. Coal seam gas is the "number one killer" of my country's coal mine safety production. For example, in 2014, ther...

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
IPC IPC(8): G01N7/04
CPCG01N7/04
Inventor 陈明义李浩然张荣王宁张先萌
Owner SHIJIAZHUANG TIEDAO UNIV
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