CN-122006833-A - Distillation detection processing device

CN122006833ACN 122006833 ACN122006833 ACN 122006833ACN-122006833-A

Abstract

The invention discloses a distillation detection processing device which comprises a closed box body, a heating distillation unit, a gas collecting unit, a liquid collecting unit, a negative pressure mechanism and an exhaust gas treatment mechanism. The box body is provided with a sealing door and a visual observation window, the heating distillation unit comprises an electric heater and a heating container, the heating container is sequentially connected with a condenser, a liquid collecting bottle and a gas collecting bottle through a distillation pipeline, the negative pressure mechanism is used for maintaining a negative pressure state in the box and preventing gas from leaking, and the waste gas treatment mechanism is used for carrying out harmless treatment on the extracted gas and then discharging the gas. The invention fundamentally prevents harmful gas from escaping through the airtight negative pressure design, integrates waste gas treatment to realize environment-friendly operation, can further improve the safety, flexibility and automation degree through the designs of a modularized treatment box, safety interlocking control, automatic fraction collection and the like, and is suitable for safe distillation pretreatment in a laboratory.

Inventors

Xu Wenheng
Song Yongjianan
HU YAO
WANG YA
GAO QIANG
LI HUADONG
WANG YUJIE
Meng Xianpiao
JIANG TINGYA
YUAN FENG

Assignees

遵义市精科信检测有限公司

Dates

Publication Date: 20260512
Application Date: 20260119

Claims (10)

1. A distillation detection processing device comprises a closed box body and a heating distillation unit, and is characterized in that, The box body is provided with a sealing door and a visual observation window; the heating distillation unit comprises an electric heater and a heating container for placing a sample to be processed, the heating container is connected with a condenser, a gas collecting unit and a liquid collecting unit through a distillation pipeline, the liquid collecting unit is provided with a liquid collecting bottle, and the gas collecting unit is provided with a gas collecting bottle; a negative pressure mechanism and an exhaust gas treatment mechanism are also arranged in the box body; the negative pressure mechanism comprises a negative pressure air pump which is used for keeping the inside of the box body in a negative pressure state; The waste gas treatment mechanism is communicated with the inside of the box body and is used for carrying out harmless treatment on the gas pumped by the negative pressure air pump and then discharging the gas to the external environment.
2. The distillation detection processing device according to claim 1, wherein the exhaust gas treatment mechanism is a replaceable modular exhaust gas treatment cartridge having one or more of a physical adsorption material, a chemical treatment fluid, or a membrane filter disposed therein.
3. The distillation detection processing device according to claim 1, wherein the condenser comprises a heat exchange portion provided in a case and a heat radiation portion extending outside the case, a heat radiation fan is provided outside the heat radiation portion, and the distillation pipeline is wound around or spirally in the heat exchange portion.
4. The distillation detection processing device according to claim 1, further comprising a controller, wherein a negative pressure detector for detecting the internal air pressure is provided in the tank, the negative pressure detector, the negative pressure mechanism and the electric heater are electrically connected to the controller, and the controller is configured to permit or activate the electric heater to operate only when the negative pressure detector detects that the internal air pressure of the tank is within a preset negative pressure range.
5. The distillation detection processing device according to claim 4, wherein the preset negative pressure ranges from-10 Pa to-20 Pa.
6. The distillation detection processing device according to claim 4, wherein a temperature sensor is arranged in the electric heater or outside the heating container, an electric control valve is arranged on an inlet pipeline of the liquid collecting bottle and the gas collecting bottle, the temperature sensor and the electric control valve are electrically connected with the controller, and the controller is configured to control the opening and closing of the corresponding electric control valve according to a temperature value detected by the temperature sensor so as to perform split-flow collection.
7. The distillation detection processing device according to claim 1, wherein the visual observation window is a transparent window provided on the wall of the case, or a combination of a camera provided inside the case and a display screen provided outside.
8. The distillation detection processing device according to claim 1, wherein a leak-proof and explosion-proof shield is arranged outside the heating container, and an emergency drainage device is connected to the bottom of the shield.
9. The distillation detection processing device according to claim 1, wherein the gas collection cylinder is a sealed gas cylinder with a piston.
10. The distillation detection processing device according to claim 1, wherein the heating container, the liquid collection bottle and the gas collection bottle are provided with a plurality of specifications and types, and are installed in the case by a universal jig.

Description

Distillation detection processing device Technical Field The invention relates to the field of laboratory appliances or detection tools, in particular to a pretreatment device for distillation detection. Background Distillation detection is a vital pretreatment step in the fields of chemical analysis, environmental monitoring, food safety, drug development and the like, and aims to separate and purify target components from complex matrixes. Conventional distillation units are typically open or semi-open operated, with the heating, condensing, collecting, etc. units being independently disposed within a laboratory fume hood, relying on the laboratory overall ventilation system to remove harmful gases generated during the course of the experiment. However, such conventional devices have significant safety and environmental drawbacks. First, even when operated in a fume hood, it is difficult to completely eliminate the escape of hazardous, corrosive or malodorous gases to the laboratory environment during heating, transfer and collection, which constitutes a long-term potential threat to the health of the operator and may contaminate delicate instruments. Secondly, for samples with strong volatility and high toxicity (such as cyanide, volatile phenol, certain organic solvents and the like), the conventional ventilation is difficult to ensure absolute safety, and the risk of accidents exists. Furthermore, the conventional apparatus directly discharges untreated exhaust gas into a ventilation system, and only performs space transfer rather than substantial treatment, which increases the burden of environmental protection control without conforming to increasingly strict green laboratory standards. Finally, the existing device has lower automation and integration degree, complex operation, low efficiency and poor reproducibility because the collection of fractions with different components depends on manual judgment and switching. To solve the above problems, some attempts have been made in the art to improve, for example, the addition of a partial hood to the distillation apparatus or the integration of partial units. However, such schemes often fail to achieve an organic combination of "process full-tightness" and "exhaust gas in-situ treatment" fundamentally, either because of insufficient tightness or because the exhaust gas treatment units are crude and cannot flexibly adapt to exhaust gases of different chemical properties. Therefore, developing an intelligent distillation detection processing device that can realize the whole-process airtight operation, actively maintain the negative pressure environment to prevent leakage, and perform efficient modularized harmless treatment according to the exhaust gas properties becomes a technical problem to be solved in the art. Disclosure of Invention The invention aims to overcome the defects of the prior art, provides a distillation detection treatment device, and aims at realizing full-closed, high-safety and environment-friendly operation in the pretreatment process of distillation, fundamentally solving the problems of harmful gas leakage and secondary pollution through the synergistic effect of active negative pressure protection and modularized waste gas treatment, and improving the automation level and the operation convenience of the device. The technical scheme includes that the distillation detection processing device comprises a closed box body and a heating distillation unit, wherein a sealing door and a visual observation window are arranged on the box body, the heating distillation unit comprises an electric heater and a heating container for placing a sample to be processed, the heating container is connected with a condenser, a gas collecting unit and a liquid collecting unit through a distillation pipeline, the liquid collecting unit is provided with a liquid collecting bottle, the gas collecting unit is provided with a gas collecting bottle, a negative pressure mechanism and an exhaust gas treatment mechanism are further arranged in the box body, the negative pressure mechanism comprises a negative pressure air pump for enabling the inside of the box body to maintain a negative pressure state, and the exhaust gas treatment mechanism is communicated with the inside of the box body and is used for discharging gas pumped by the negative pressure air pump to the external environment after performing harmless treatment. Further, the waste gas treatment mechanism is a replaceable modularized waste gas treatment box, and one or more combinations of physical adsorption materials, chemical treatment liquid or membrane filters are arranged in the modularized waste gas treatment box. The condenser further comprises a heat exchange part arranged in the box body and a heat dissipation part extending out of the outer side of the box body, a heat dissipation fan is arranged on the outer side of the heat dissipation part, and the distillation pipeline is arranged