Device for automatic in-line measurement of mass loss by calcination and thermal decomposition of solid particles

A technology of solid particles and loss on ignition, applied in measuring devices, material thermal analysis, testing water, etc., can solve problems such as the influence of property changes, increased frequency of occurrence, and large uncertainty in measured values, so as to avoid trouble, Optimizing response time, avoiding effects of deterministic weight measurements

Inactive Publication Date: 2012-05-09
ING ENERGETICA Y DE CONTAMINACION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In all the above cases, the installations are based on indirect means of measurement (capacitive infrared or microblog sensors) which are very susceptible to changes in the properties of the ash
This in turn leads to an increased frequency of large uncertainties in the measured values ​​as the ash changes

Method used

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  • Device for automatic in-line measurement of mass loss by calcination and thermal decomposition of solid particles
  • Device for automatic in-line measurement of mass loss by calcination and thermal decomposition of solid particles
  • Device for automatic in-line measurement of mass loss by calcination and thermal decomposition of solid particles

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Embodiment Construction

[0029] figure 1 A schematic representation of one embodiment of the invention claimed is shown. The structure of the device makes it possible to measure the loss on ignition both in an oxygen-free environment and in an oxygen-free environment.

[0030] In the example shown, the device for in-line measurement of loss on ignition and thermal decomposition reactions is connected to a pneumatic particle transport conduit 1 via a transport pipe 2 provided with an automatic shut-off valve 3 . The device uses a jet pump 4 supplied with compressed air through a self-closing valve 5 to absorb a bidirectional air flow consisting of a mixture of particles to be detected and air for transport. The extracted particles are separated by a cyclone dryer 6 and collected into a chamber 7 which is isolated at the lower end by a self-closing valve 8 .

[0031] The cyclone drier 6, the chamber 7 and the valve 8 are arranged vertically and in line above the electric furnace 9, and the temperature...

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Abstract

The invention provides a device for automatic in-line measurement of mass loss by calcination and thermal decomposition of solid particles. The particles are automatically extracted from a channel through which said particles are transported in a gaseous current. The inventive device can be used to determine the ash and volatile bodies in solid fuel and the unburned bodies in ashes. The particles are deposited on a crucible (10), permanently located inside an electric kiln (9) with temperature control. The device comprises a channel (16) which, after passing through the furnace (9), ends in a bell shape at the top of the crucible (10). The sample enters the furnace (9) by gravity through the channel (16) and is deposited on the crucible (10) where the sample is calcined. Said crucible (10) is supported by a rod (11) that passes through the bottom portion of the furnace and rests on an analytical balance (14). After calcination, the sample is sucked up through the vertical channel (16) to allow a new cycle to begin.

Description

field of invention [0001] The present invention relates to any field requiring measurement of loss on ignition and / or thermal decomposition reactions (pyrolysis) of solid particle samples for process monitoring and optimization and quality control of specific powder products. Background technique [0002] The object of the present invention, as its title indicates, is to provide a device for automatic pipeline measurement of loss on ignition and thermal decomposition reaction (cracking) of solid particles which are automatically introduced into a conduit and transported in the conduit by an air flow . [0003] Loss On Ignition (LOI) is the percentage loss in mass of a sample particle after combustion at a controlled temperature in an aerobic environment. This parameter is usually related to the fixed carbon components in the sample particles. [0004] When the controlled temperature is raised in an oxygen-deficient environment, thermal decomposition reactions or cracking o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
CPCG01N33/18G01N5/04G01N25/00G01N2001/1018G01N2033/0091G01N25/22G01N33/22G01N2001/2014
Inventor 米格尔 A·德尔加多 拉萨诺恩里克·托瓦 霍尔加多马里亚诺·雷耶斯 维尔佛朗西斯科·罗德里格斯 巴里亚路易斯·卡纳达斯 塞拉诺文森特·科尔特斯 加莱亚诺
Owner ING ENERGETICA Y DE CONTAMINACION
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