Device for detecting petroleum hydrocarbon in well site polluted soil

Abstract

The utility model relates to the technical field of environmental protection detection, in particular to a device for detecting petroleum hydrocarbon in well site polluted soil, which comprises a tetrachloroethylene storage box, an outlet of the tetrachloroethylene storage box is connected with an inlet of an extraction mechanism, and the tetrachloroethylene storage box is used for feeding tetrachloroethylene in the tetrachloroethylene storage box into the extraction mechanism. An outlet of the extraction mechanism is connected with a cuvette of an infrared oil meter through a sample injector; the extraction mechanism, the tetrachloroethylene storage box, the sample injector and the infrared oil measuring instrument are all arranged on the chassis. The device is simple to operate and high in automation degree, and solves the problem that the petroleum hydrocarbon in the soil cannot be accurately and quickly detected on site.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of environmental protection detection technology, specifically relates to a device for detecting petroleum hydrocarbon in well site contaminated soil. BACKGROUND

[0002] The petroleum hydrocarbon detection method in soil includes gas chromatography, ultraviolet spectrophotometry and infrared spectrophotometry, all of which need to collect soil samples to the laboratory, and then detect in the laboratory, and the sample detection has certain hysteresis. Another handheld oil detector can detect on site, but the detection data is not accurate and the on-site operation is relatively cumbersome, reducing the service life of the handheld oil detector. Therefore, at present, there is a lack of on-site, rapid and accurate detection equipment for organic pollutants in soil.

[0003] Therefore, the present application provides a device for detecting petroleum hydrocarbon in well site contaminated soil to solve the above technical problems. UTILITY MODEL CONTENT

[0004] The utility model discloses a device for detecting petroleum hydrocarbon in well site contaminated soil, which is based on the environmental standard "determination of soil petroleum by infrared spectrophotometry" (HJ1051-2019) and the principle of infrared oil detector, and can accurately and quickly detect petroleum hydrocarbon in soil on site.

[0005] The utility model discloses a device for detecting petroleum hydrocarbon in well site contaminated soil, which is based on the environmental standard "determination of soil petroleum by infrared spectrophotometry" (HJ1051-2019) and the principle of infrared oil detector, and can accurately and quickly detect petroleum hydrocarbon in soil on site.

[0006] The utility model provides a device for detecting petroleum hydrocarbon in well site contaminated soil, including tetrachloroethylene storage tank, the outlet of tetrachloroethylene storage tank is connected with the entrance of extraction mechanism, is used for sending tetrachloroethylene in tetrachloroethylene storage tank into extraction mechanism, the outlet of extraction mechanism is connected with the cuvette of infrared oil detector through sample feeder,

[0007] It also includes a movable chassis, the extraction mechanism, tetrachloroethylene storage tank, sample feeder and infrared oil detector are all arranged on the chassis.

[0008] Further, the extraction mechanism includes at least one extraction bottle, each extraction bottle is detachably connected with a filter mechanism, each filter mechanism is connected with the inlet of a corresponding extraction liquid mixing bottle through a corresponding first pump, and the outlet of each extraction liquid mixing bottle is connected with the inlet of a sample feeder.

[0009] Further, the extraction bottle is installed on a shaker.

[0010] Furthermore, the filtration mechanism includes a filter screen, and the bottom of the extraction bottle has an opening structure that allows the filter screen to be detachably connected to the extraction bottle. Filter paper is laid on the filter screen, and the filter screen is connected to the inlet of the extraction liquid mixing bottle through a first pump.

[0011] Furthermore, it also includes a second pump, the inlet of which is connected to the outlet of the tetrachloroethylene storage tank, and the outlet of which is connected to the inlet of the extraction bottle.

[0012] Furthermore, a first valve for controlling the entry of tetrachloroethylene into the extraction bottle is installed on the pipe connecting the outlet of the second pump and the inlet of the extraction bottle.

[0013] Furthermore, it also includes a cleaning pipeline, one end of which is connected to the outlet of the second pump, and the other end is connected to the injector and the infrared oil analyzer, respectively.

[0014] It also includes a waste liquid collection bottle set on the chassis, and the drain port of the infrared oil meter is connected to the waste liquid collection bottle for discharging the waste liquid after cleaning the infrared oil meter into the waste liquid collection bottle.

[0015] Furthermore, a second valve for controlling the entry of tetrachloroethylene into the injector and infrared oil analyzer is installed on the pipe connecting one end of the cleaning pipeline to the outlet of the second pump.

[0016] Compared with the prior art, the technical solution provided by this utility model has the following beneficial effects:

[0017] 1) This utility model proposes a device for detecting petroleum hydrocarbons in contaminated soil at well sites. By sequentially connecting a tetrachloroethylene storage tank, a second pump, an extraction mechanism, a sampler, and an infrared oil analyzer on a movable chassis, the device enables on-site detection of petroleum hydrocarbons in well site soil. The sampler in the device provides accurate and highly reproducible sample measurement, resulting in high precision, accuracy, and reproducibility of the detection results. This device is simple to operate, highly automated, and solves the problem of the inability to accurately and quickly detect petroleum hydrocarbons in soil on-site.

[0018] 2) The present invention proposes a device for detecting petroleum hydrocarbons in contaminated soil at well sites. Multiple extraction mechanisms can be set on the oscillator, which can simultaneously detect multiple samples, achieving accurate and rapid on-site detection. Attached Figure Description

[0019] The accompanying drawings are incorporated in and form part of this specification, and together with the description, serve to explain the principles of this invention.

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the device for detecting petroleum hydrocarbons in contaminated soil at well sites according to this utility model.

[0022] Wherein: 1 is the extraction mechanism; 2 is the tetrachloroethylene storage tank; 3 is the sampler; 4 is the infrared oil analyzer; 5 is the waste liquid collection bottle; 6 is the second pump; 7 is the first valve; 8 is the cleaning pipeline; 9 is the second valve; 11 is the extraction bottle; 12 is the extraction liquid mixing bottle; 13 is the first pump; 14 is the shaker. Detailed Implementation

[0023] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses consistent with some aspects of this invention as detailed in the appended claims.

[0024] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0025] See Figure 1 This utility model provides a device for detecting petroleum hydrocarbons in contaminated soil at well sites, including a tetrachloroethylene storage tank 2. The outlet of the tetrachloroethylene storage tank 2 is connected to the inlet of an extraction mechanism 1 for feeding tetrachloroethylene from the tetrachloroethylene storage tank 2 into the extraction mechanism 1. The outlet of the extraction mechanism 1 is connected to the cuvette of an infrared oil analyzer 4 via a sampler 3.

[0026] It also includes a movable chassis, on which the extraction mechanism 1, tetrachloroethylene storage tank 2, sampler 3, and infrared oil analyzer 4 are all mounted.

[0027] In this embodiment, the chassis is a car, which is not limited here, as long as it can move the device to the site for testing; the sampler 3 can be an automatic sampler.

[0028] Furthermore, the extraction mechanism 1 includes at least one extraction bottle 11, each extraction bottle 11 is detachably connected to a filtration mechanism, each filtration mechanism is connected to the inlet of a corresponding extraction liquid mixing bottle 12 via a corresponding first pump 13, and the outlet of each extraction liquid mixing bottle 12 is connected to the inlet of the sampler 3.

[0029] In this embodiment, there are four extraction bottles 11. Each extraction bottle 11 is detachably connected to a filter mechanism at its bottom. Each filter mechanism is connected to the inlet of the corresponding extraction liquid mixing bottle 12 through a corresponding first pump 13. The outlet of each extraction liquid mixing bottle 12 is connected to the inlet of the corresponding injector 3. The outlet of each injector 3 is connected to the infrared oil analyzer 4.

[0030] Furthermore, all extraction bottles 11 are mounted on shakers 14.

[0031] Specifically, the shaker 14 starts to shake with the extraction bottle 11. The shaking time can be set. After shaking is completed, the extract is sent to the extraction mixture bottle 12 via the first pump 13. This process is repeated to achieve multiple extractions until the extraction requirements are met. The extract after multiple extractions is called the test solution.

[0032] Multiple extraction bottles 11 are installed on the shaker 14, which can realize the simultaneous shaking and detection of multiple samples, improve detection efficiency, and save time.

[0033] Furthermore, the filtration mechanism includes a filter screen, and the bottom of the extraction flask 11 has an opening structure for detachable connection between the filter screen and the extraction flask 11. Filter paper is laid on the filter screen, and the filter screen is connected to the inlet of the extraction solution mixing flask 12 via the first pump 13. The detachable connection can be a screw connection, which is for replacing the filter paper before each sample is measured.

[0034] Furthermore, it also includes a second pump 6, the inlet of which is connected to the outlet of the tetrachloroethylene storage tank 2, and the outlet of which is connected to the inlet of the extraction bottle 11.

[0035] In this embodiment, both the second pump 6 and the first pump 13 can be metering pumps.

[0036] Furthermore, a first valve 7 for controlling the entry of tetrachloroethylene into the extraction bottle 11 is provided on the pipe connecting the outlet of the second pump 6 and the inlet of the extraction bottle 11.

[0037] Furthermore, it also includes a cleaning line 8, one end of which is connected to the outlet of the second pump 6, and the other end is connected to the injector 3 and the infrared oil meter 4 respectively, for cleaning the injector 3 and the infrared oil meter 4.

[0038] It also includes a waste liquid collection bottle 5 set on the chassis. The drain port of the infrared oil meter 4 is connected to the waste liquid collection bottle 5 for discharging the waste liquid after cleaning the infrared oil meter 4 into the waste liquid collection bottle 5.

[0039] Furthermore, a second valve 9 is installed on the pipe connecting the cleaning pipeline 8 and the outlet of the second pump 6 to control the entry of tetrachloroethylene into the sampler 3 and the infrared oil analyzer 4.

[0040] Working principle: After collecting soil samples, pretreatment is performed according to the standard "Determination of Petroleum in Soil by Infrared Spectrophotometry" (HJ1051-2019). After pretreatment, a certain amount of the soil sample to be tested is weighed and poured into extraction bottle 11. Then, tetrachloroethylene is quantitatively introduced into extraction bottle 11 to extract petroleum in the soil. After extraction, the extract can be quantitatively introduced into the cuvette of infrared oil analyzer 4 through sampler 3 for detection. After detection, the second valve 9 is opened to automatically clean sampler 3 and cuvette. The cleaning waste liquid enters waste liquid collection tank 5 to prepare for the next sample test.

[0041] It should be noted that all control commands are integrated into the infrared oil analyzer 4 detection software, where parameters are set and controlled; pretreatment includes crushing the soil sample and sieving particulate matter.

[0042] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model.

[0043] It should be understood that this utility model is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A device for detecting petroleum hydrocarbons in contaminated soil at well sites, characterized in that, Includes a tetrachloroethylene storage tank (2), the outlet of which is connected to the inlet of an extraction mechanism (1) for sending tetrachloroethylene from the tetrachloroethylene storage tank (2) into the extraction mechanism (1), and the outlet of the extraction mechanism (1) is connected to the cuvette of an infrared oil analyzer (4) via a sampler (3). It also includes a movable chassis, on which the extraction mechanism (1), tetrachloroethylene tank (2), sampler (3) and infrared oil analyzer (4) are all mounted.

2. The device for detecting petroleum hydrocarbons in contaminated soil at well sites according to claim 1, characterized in that, The extraction mechanism (1) includes at least one extraction bottle (11), each extraction bottle (11) is detachably connected to a filter mechanism, each filter mechanism is connected to the inlet of the corresponding extraction liquid mixing bottle (12) through a corresponding first pump (13), and the outlet of each extraction liquid mixing bottle (12) is connected to the inlet of the injector (3).

3. The apparatus for detecting petroleum hydrocarbons in contaminated soil at well sites according to claim 2, characterized in that, The extraction bottle (11) is mounted on the shaker (14).

4. The apparatus for detecting petroleum hydrocarbons in contaminated soil at well sites according to claim 2, characterized in that, The filtration mechanism includes a filter screen. The bottom of the extraction bottle (11) has an opening structure that allows the filter screen to be detachably connected to the extraction bottle (11). Filter paper is laid on the filter screen. The filter screen is connected to the inlet of the extraction liquid mixing bottle (12) through the first pump (13).

5. The apparatus for detecting petroleum hydrocarbons in contaminated soil at well sites according to claim 2, characterized in that, It also includes a second pump (6), the inlet of which is connected to the outlet of the tetrachloroethylene storage tank (2), and the outlet of which is connected to the inlet of the extraction bottle (11).

6. The apparatus for detecting petroleum hydrocarbons in contaminated soil at well sites according to claim 5, characterized in that, A first valve (7) for controlling the entry of tetrachloroethylene into the extraction bottle (11) is provided on the pipe connecting the outlet of the second pump (6) and the inlet of the extraction bottle (11).

7. The apparatus for detecting petroleum hydrocarbons in contaminated soil at well sites according to claim 5, characterized in that, It also includes a cleaning line (8), one end of which is connected to the outlet of the second pump (6), and the other end is connected to the injector (3) and the infrared oil meter (4) respectively. It also includes a waste liquid collection bottle (5) set on the chassis. The drain port of the infrared oil meter (4) is connected to the waste liquid collection bottle (5) for discharging the waste liquid after cleaning the infrared oil meter (4) into the waste liquid collection bottle (5).

8. The apparatus for detecting petroleum hydrocarbons in contaminated soil at well sites according to claim 7, characterized in that, A second valve (9) for controlling the entry of tetrachloroethylene into the injector (3) and the infrared oil analyzer (4) is installed on the pipe connecting one end of the cleaning pipeline (8) to the outlet of the second pump (6).

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