A continuous digestion system with adjustable pressure and flow

An adjustable, flow rate technology, applied in the field of digestion, can solve the problems of low automation efficiency, uncontrollable pressure, environmental hazards, etc., and achieve the effects of easy operation, small pressure fluctuation and low cost.

Active Publication Date: 2018-10-02
INSTITUTE OF ANALYSIS GUANGDONG ACADEMY OF SCIENCES (CHINA NATIONAL ANALYTICAL CENTER GUANGZHOU)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of these digestion methods are batch injection. During the digestion process, the automation efficiency is low, and the overflow of volatile substances will cause harm to the environment.
There is uncontrollable pressure in the digestion process, which is dangerous

Method used

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  • A continuous digestion system with adjustable pressure and flow
  • A continuous digestion system with adjustable pressure and flow

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]A pressure and flow adjustable continuous digestion system, the system includes a liquid sample storage tank 1, a heat exchange tube 2, and a thermal digestion device 3 connected in sequence, and the upper end of the liquid sample storage tank 1 is respectively connected to the air via a three-way solenoid valve 13 Pump 11 and vacuum pump 12; the liquid sample storage tank 1 is respectively connected to a cleaning solution bottle 15, a digestion reagent bottle 16, a digestion sample bottle 17 containing a liquid to be digested, and a heat exchange tube 2 through a four-way valve 14, and the heat exchange tube 2 There are two intertwined pipelines, one end of which is connected to the liquid sample storage tank 1 through the four-way valve 14, and the other end is connected to the liquid inlet of the thermal digestion device 3; one end of the other pipeline is connected to the heat The other end of the liquid outlet of the digestion device 3 communicates with the digestion...

Embodiment 2

[0042] Referring to Example 1, the difference is that the vacuum pump is replaced by a peristaltic pump, the thermal digestion device is an aluminum shell, the built-in glass spiral pipeline is used for microwave heating, the temperature of the digestion liquid is monitored by the built-in infrared probe, and the external temperature control device controls the microwave heating power.

Embodiment 3

[0044] Referring to Example 1, the difference is that the liquid sample storage tank is two parallel connections of the first liquid sample storage tank 4 and the second liquid sample storage tank 5, and the specific structure is as follows figure 2 A continuous digestion system with adjustable pressure and flow is shown, the system includes a liquid sample storage tank, a heat exchange tube 9, and a thermal digestion device 10 connected in sequence, and the liquid sample storage tank is the first liquid sample storage tank 4 and Two second liquid sample storage tanks 5 are connected in parallel, and the upper ends of the first liquid sample storage tank 4 and the second liquid sample storage tank 5 are respectively connected to the air pump 8 and the vacuum pump 7 through the four-way valve 6; The first check valve 42 communicates with the first solenoid valve 20, and the upper end of the second liquid sample storage tank 5 communicates with the first solenoid valve 20 throug...

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Abstract

The invention discloses a pressure-and-flow-adjustable continuous digestion system which comprises a liquid sample storage tank, a heat exchange pipe and a thermal digestion device in sequential communication. The upper end of the liquid sample storage tank is communicated with an air pump and a vacuum pump respectively while the lower end of the same is connected with a cleaning liquid bottle, a digestion reagent bottle, a digestion sample bottle filled with to-be-digested liquid and the heat exchange pipe. The system is a fully-closed pipeline system, has few control units and is simple in structure, and each unit is easy-to-get in material and low in cost; the air pump is adopted at a sample feeding end to control pressure of the to-be-digested liquid in pipelines, a peristaltic pump is used at a terminal to control flow velocity of the to-be-digested liquid, and the pipelines are switched through a three-way valve and a four-way valve to enable different liquid samples to be sucked into and discharged out of the storage tank and to enable the to-be-digested liquid to enter the thermal digestion device; the subsequent digestion system is little in pressure fluctuation and high in liquid flowing continuity, and the problems of pressure uncontrollability and damage to environment due to overflowing of volatile substances in the prior art are solved.

Description

Technical field: [0001] The invention relates to the technical field of digestion, in particular to a continuous digestion system with adjustable pressure and flow. Background technique: [0002] At present, the digestion part of sample pretreatment mostly adopts tank-type closed or semi-open type digestion. Most of these digestion methods are batch injection. During the digestion process, the automation efficiency is low, and the overflow of volatile substances will cause harm to the environment. There is uncontrollable pressure in the digestion process, which has certain dangers. Invention content: [0003] The purpose of the present invention is to provide a continuous digestion system with adjustable pressure and flow. The whole system is a fully enclosed pipeline system with few control units and simple structure. Control the flow rate of the digestion solution, and realize efficient digestion of various samples through pressure, temperature, and flow adjustment. It...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/44
CPCG01N1/44
Inventor 陈江韩雷永乾郭鹏然潘佳钏王冠华梁慧
Owner INSTITUTE OF ANALYSIS GUANGDONG ACADEMY OF SCIENCES (CHINA NATIONAL ANALYTICAL CENTER GUANGZHOU)
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