Intrinsically safe nitrogen-filled oxygen-determining centrifugal extraction system for explosive solvent system
An intrinsically safe, centrifugal extractor technology, applied in solvent extraction, liquid solution solvent extraction, separation methods, etc., can solve problems such as heat generation, limited extraction agent selection, centrifugal extractor application, static electricity, etc.
Pending Publication Date: 2019-07-05
HEFEI GENERAL MACHINERY RES INST
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Problems solved by technology
[0004] The extraction agent has the following risk factors in the centrifugal extractor: 1. In the high-speed centrifugal force field, heat and static electricity caused by friction between the material and the rotating parts; 2. Internal friction and sparks generated by the equipment under abnormal conditions; 3. Organic Gas accumulation from solvent volatilization
These potential safety hazards greatly limit the selection of extraction agents and the application of centrifugal extractors
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[0030] The present invention will be described in detail below in conjunction with specific embodiments.
[0031] An intrinsically safe centrifugal extraction system for an explosive solvent system with nitrogen filling and oxygen measurement, comprising a centrifugal extraction unit 10 for liquid-liquid extraction and separation, the centrifugal extraction unit 10 includes one or more centrifugal extraction machines 101 connected in series, the The centrifugal extraction system also includes filling nitrogen into the centrifugal extractor 101 to replace the internal air, so that the oxygen content in the centrifugal extractor remains within a preset safety range, and a nitrogen filling unit 20 for detecting oxygen in the centrifugal extractor 101. The oxygen measuring unit 30 of the specific value of the content, the centrifugal extractor 101 is respectively connected with the nitrogen filling unit 20 and the oxygen measuring unit 30;
[0032] The centrifugal extraction syste...
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The invention belongs to the technical field of centrifugal extraction, and more particularly relates to an intrinsically safe nitrogen-filled oxygen-determining centrifugal extraction system for an explosive solvent system. The intrinsically safe nitrogen-filled oxygen-determining centrifugal extraction system comprises a centrifugal extraction unit for liquid-liquid extraction and separation; the centrifugal extraction unit comprises one or more centrifugal extractors which are connected in series; the centrifugal extraction system further comprises a nitrogen filling unit which is configured to fill the centrifugal extractor with nitrogen to replace the air therein to keep the oxygen content in the centrifugal extractor within a preset safe range, and an oxygen determining unit which isconfigured to detect a specific value of the oxygen content in the centrifugal extractor; and the centrifugal extractor is communicated with the nitrogen filling unit and the oxygen determining unit,respectively. The intrinsically safe nitrogen-filled oxygen-determining centrifugal extraction system for an explosive solvent system has the advantages that nitrogen is introduced into the sealed extractor to replace the air (oxygen) therein to control the oxygen content in the sealed space of the extractor below a safety value of combustion explosion (generally lower than 3VOL%), and the safetyand stability of the centrifugal extraction process during the use of a flammable and explosive solvent are greatly improved.
Description
technical field [0001] The invention belongs to the technical field of centrifugal extraction, and in particular relates to an intrinsically safe centrifugal extraction system for nitrogen filling and oxygen measurement for explosive solvent systems. Background technique [0002] Centrifugal extractor is a fast and efficient liquid-liquid extraction and separation equipment. The principle is to use the centrifugal force generated by the centrifugal extractor during high-speed rotation to mix and transfer the two-phase liquids with different densities and immiscibles, and finally separate them to achieve the purpose of extraction. Two phases that are immiscible with each other, one of which is generally an aqueous phase, which contains the components to be extracted, is called a solute; the other phase is generally an organic solvent, called an extractant. After the two phases enter the extractor, mass transfer occurs first, and the solute enters the extractant; then separat...
Claims
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IPC IPC(8): B01D11/04G01N27/26
CPCB01D11/0488B01D11/0484B01D11/048G01N27/26
Inventor 陈崔龙张德友陈道林丁建国
Owner HEFEI GENERAL MACHINERY RES INST