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On-line monitoring device for rapid drying of water-containing absorbentia

A rapid drying and monitoring device technology, applied in measuring devices, by removing certain components, weighing, instruments, etc., can solve the problems of wasteful organic solvents, many operating steps, and low drying efficiency, and achieve universal application Strong performance, fewer operation steps, and improved drying water efficiency

Active Publication Date: 2019-03-12
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] (1) The drying efficiency is low and the detection time is long;
[0016] (2) The accuracy is poor;
[0017] (3) Possess a potential safety hazard
[0020] (1) The detection cycle is long;
[0021] (2) There are many operation steps;
[0023] (4) The Karl Fischer method produces more waste organic solvents

Method used

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  • On-line monitoring device for rapid drying of water-containing absorbentia
  • On-line monitoring device for rapid drying of water-containing absorbentia
  • On-line monitoring device for rapid drying of water-containing absorbentia

Examples

Experimental program
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Effect test

Embodiment 1

[0043] 1. Design principles

[0044] It is planned to use the S-type tensile bridge resistance strain sensor (abbreviated as the tension sensor) to monitor the quality change of the water-containing absorbent drug sample in the oven in real time, and stop heating in time when the sample is dried with moisture. Since the volatilization of NG in the absorption drug is avoided, the potential safety hazard and the influence of NG loss on the detection result are eliminated.

[0045] With the goal of accurate detection results and short detection time, the specific design principles are as follows:

[0046] (1) The tension sensor should be fixed and have appropriate protection measures, so that it is not easy to be exposed on the top of the oven.

[0047] (2) The calibration and verification of the tension sensor is done at room temperature, and the heat from the oven should not be conducted to the tension sensor, which is equivalent to weighing the tension sensor at room temperat...

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Abstract

The invention discloses an on-line monitoring device for rapid drying of water-containing absorbentia. The on-line monitoring device comprises a workstation, a tension sensor, a drying oven, a connecting rod, a carrier and a sample tray. The tension sensor is fixed into a dust cover at the top of the drying oven, and a mass signal is transmitted to the workstation. From the inside of the drying oven, the upper side of the connecting rod is connected to the tension sensor and the lower side of the connecting rod is connected to the carrier. During a test, a sample is loaded into the mesh sampletray and placed on a hollow ring of the carrier for drying. When the mass is reduced to a threshold value, the workstation alarms and the sample tray is taken out. The on-line monitoring device not only has a high drying speed, but also avoids the volatilization of nitroglycerin in the sample, thereby improving the detection accuracy and safety.

Description

technical field [0001] The invention belongs to the field of physical and chemical detection of propellant and explosives, and is mainly used in the online monitoring of rapid drying of water-containing absorbents. The heating stop time is determined by tracking the mass change, and the nitroglycerin in the sample will not be volatilized or decomposed, ensuring the accuracy of the detection results. Sexuality, eliminating potential safety hazards in the test process. technical background [0002] The absorption drug refers to a substance made by absorbing nitroglycerin (NG) with nitrocellulose (NC). [0003] First of all, it should be traced back to 1888 when Nobel used 60% NC to absorb 40% NG to make a double-base drug group, and then rolled it into a sheet with the calender used in the rubber industry at that time, and then cut it into a certain shape and size. Double base propellants are used to fire projectiles. Later, the process was modified, and explosive and non-ex...

Claims

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Application Information

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IPC IPC(8): G01N5/04
CPCG01N5/045
Inventor 牟宏贾林张林军于思龙顾妍王芳芳张冬梅刘文亮
Owner XIAN MODERN CHEM RES INST
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