Automatic quantitative evaporation concentration device and corresponding concentration method

An evaporative concentration and quantitative concentration technology, applied in the field of evaporative concentration chemical analysis, can solve the problems of impact measurement, labor cost, inaccurate concentration ratio, etc., and achieve the effect of reducing impact and saving labor cost.

Pending Publication Date: 2021-06-15
XIAN THERMAL POWER RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, the current conventional rotary evaporator and nitrogen blowing instrument are difficult to meet the needs of use, and usually have the following problems:
[0003] 1) Lack of accurate sampling positioning and concentration end point positioning means, resulting in inaccurate concentration ratio;
[0004] 2) There is a lack of remedial means for the deviation of the concentration end point, resulting in inaccurate concentration end points and affecting subsequent measurements;
[0005] 3) The degree of automation of the equipment is not high, requiring a lot of human intervention, and there is the possibility of artificially introducing pollution and labor costs

Method used

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  • Automatic quantitative evaporation concentration device and corresponding concentration method

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Embodiment Construction

[0028] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Take water vapor sampling and concentrated iron measurement as an example, such as figure 1 As shown, open the sampling cut-off valve 1 connected to the sample water, the quantitative evaporation concentration control box 3 collects the quantitative sampling induction circuit 4 in the open circuit state, controls the sampling electric valve 18 to open, controls the sampling bypass electric valve 2 to close, and the water sample automatically Enter in the evaporating and concentrating cup 11, the total amount of sampling is 200ml, and the sampling flow rate is 50ml / min, open the dosing electric valve 19 and add concentrated hydrochloric acid 1ml in the sampling process, prevent iron corrosion product from being adsorbed on the cup wall of the evaporating and concentrating cup, and then Close the dosing electric valve 19, when th...

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Abstract

The invention discloses an automatic quantitative evaporation and concentration device and a corresponding concentration method. The device comprises an automatic sampling and dosing system, an automatic constant volume system, an automatic heating system, a quantitative concentration system, an automatic positioning system and a quantitative evaporation and concentration control box for controlling quantitative concentration equipment. According to the device, the automatic sampling, automatic heating concentration and automatic volume fixing can be realized through a built-in automatic positioning system, solute in a solution can be concentrated by any multiple, human intervention is not needed in the whole concentration process, and pollution possibly generated in the concentration process is reduced.

Description

technical field [0001] The invention belongs to the technical field of evaporative concentration chemical analysis, in particular to an automatic quantitative evaporative concentration device and a corresponding concentration method. Background technique [0002] Limited by the detection accuracy of many instruments, trace amounts of solutes in the solution are often not detected or the detection results have a large deviation. Concentration before concentration is a very effective way. However, the current conventional rotary evaporator and nitrogen blowing instrument are difficult to meet the needs of use, and usually have the following problems: [0003] 1) Lack of accurate sampling positioning and concentration end point positioning means, resulting in inaccurate concentration ratio; [0004] 2) There is a lack of remedial means for the deviation of the concentration end point, resulting in inaccurate concentration end points and affecting subsequent measurements; [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D1/00B01D1/30
CPCB01D1/0017B01D1/0064B01D1/0082B01D1/30
Inventor 孟龙李俊菀龙国军王宁飞胡振华李健博
Owner XIAN THERMAL POWER RES INST CO LTD
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