CN108061787A - A kind of oil field extracted water water quality heavy metal analysis device - Google Patents

Abstract

The invention discloses a heavy metal detection device for oilfield produced water quality, which consists of an adsorption rod group A, a partition group B, a housing group C, a connecting shaft I and a motor, and the adsorption rod group A is driven by the motor through the connecting shaft 1 to rotate. Rotate once every 30 minutes, each rotation is 90°; the separator group B is consolidated into the shell C, and forms four chambers in the shell C; the device enriches and samples the metal ions through the adsorption device before measuring , which can increase the lower limit of the concentration of the measured substance and improve the detection accuracy; the spoiler changes the fluid flow field and improves the adsorption efficiency; the four adsorption rods carry out four processes continuously at the same time, through the four processes of adsorption sampling, desorption detection, cleaning and drying. The two processes are integrated and carried out simultaneously, which shortens the average detection time and significantly improves the detection efficiency.

Description

A heavy metal detection device for oilfield produced water quality

technical field

The invention belongs to the technical field of heavy metal detection, and in particular relates to a heavy metal detection device for oil field produced water quality.

Background technique

A large amount of oilfield produced water will be produced in the process of oilfield exploitation. The oilfield produced water contains a variety of heavy metals such as lead, mercury, cadmium, cobalt, etc. The heavy metals discharged with the wastewater, even if the concentration is small, can also accumulate in algae and sediment and enter Food chain and produce food chain concentration, thus causing public nuisance. However, conventional water quality detection devices are difficult to detect low heavy metal concentrations, and the detection process is complex and time-consuming. Therefore, with the demand for water quality heavy metal detection, faster and more efficient water quality heavy metal detection devices are needed.

Contents of the invention

The object of the present invention is to provide a heavy metal detection device for oilfield produced water quality that can improve the detection accuracy and efficiency of heavy metals in water quality.

A method for detecting heavy metals in oilfield produced water, comprising: an adsorption rod group A, a separator group B, a casing group C, a shaft 1, a motor 2, a desorption detection device, a cleaning device and a drying device;

The shell group C is a shell, the upper part is a semicircular part 19 and the lower rectangular part 18 or 180-240 ° arc; the outer circumference of the semicircular part 19 and the two ends of the rectangular part 18 are closed, The lower end of the rectangular part 18 is open;

In the casing C fixed by the partition group B, it is distributed in a fan shape, and the casing C is divided into four chambers; between the partition I12 and the partition II13 is a desorption detection chamber, and the partition II 13 and the partition Between III and 14 is a cleaning chamber, and between partition I12 and partition IV15 is an adsorption sampling chamber;

Each partition is provided with a groove through which the adsorption rod passes;

The semicircular part 19 is provided with interfaces on the outer periphery, and the interfaces I20, II21 and III22 are respectively arranged in the desorption detection chamber, the cleaning chamber and the adsorption sampling chamber, and are connected with the desorption detection device, the cleaning device and the drying device;

The shell group C is a shell, the upper part is a semicircular part 19 and the lower rectangular part 18 or 180-240 ° arc; the outer circumference of the semicircular part 19 and the two ends of the rectangular part 18 are closed, The lower end of the rectangular part 18 is open;

In the casing C fixed by the partition group B, it is distributed in a fan shape, and the casing C is divided into four chambers; between the partition I12 and the partition II13 is a desorption detection chamber, and the partition II 13 and the partition Between III and 14 is a cleaning chamber, and between partition I12 and partition IV15 is an adsorption sampling chamber;

Each partition is provided with a groove through which the adsorption rod passes;

The semicircular part 19 is provided with interfaces on the outer periphery, and the interfaces I20, II21 and III22 are respectively arranged in the desorption detection chamber, the cleaning chamber and the adsorption sampling chamber, and are connected with the desorption detection device, the cleaning device and the drying device;

The adsorption rod group A is four adsorption rods, the adsorption rods are fixed on the axis 1 through the connecting rod, the angle between them is a right angle, the axis 1 is connected with the shell C axis, and connected with the motor 2;

The adsorption rod is a cylindrical shell, and an adsorbent 9 is placed in the shell. Several layers of hemispherical spoilers 11 are arranged on the shell, and a through hole 10 is set in the center of the spoiler;

The adsorption rod has a diameter d1 of 10-20 mm, a height h1 of 50-100 mm, and 900 hemispherical spoilers 11 are arranged on the shell, and are arranged in 30 layers evenly from top to bottom, and 30 of each layer are evenly distributed on the On the outer surface of this layer, the turbulence packs 11 of the adjacent two layers are not misaligned, and the distance L1 between each two layers is 20-30mm; The diameter d2 is 3-4mm;

The adsorption rod group A is driven and rotated by the motor 2 through the shaft 1, and each rotation is 90°;

The angle between the partition I12 and the partition II13 60-70°; the included angle between partition II 13 and partition III 14 is 90°; the included angle between partition III 14 and partition IV 15 60-70°;

Each partition is a rectangular plate with a width L2 of 40mm and a length L3 of 80-160mm, from bottom to top a rectangular slot I16 with a width L6 of 8-16mm and a length L7 of 13-28mm and a width L4 For 14-24mm, long L5 is the rectangular slot II 17 of 54-104mm.

The invention provides a heavy metal detection device for oilfield produced water, which is composed of an adsorption rod group A, a partition group B, a housing group C, a shaft 1 and a motor 2, and the adsorption rod group A is driven by the motor 2 through the shaft 1 to rotate. Rotate once every 30 minutes, and rotate 90° each time; the separator group B is consolidated into the shell C, and forms four chambers in the shell C; the device enriches and samples the metal ions through the adsorption device before measuring , which can increase the lower limit of the concentration of the measured substance and improve the detection accuracy; the spoiler changes the fluid flow field and improves the adsorption efficiency; the four adsorption rods carry out four processes continuously at the same time, through the four processes of adsorption sampling, desorption detection, cleaning and drying. The two processes are integrated and carried out simultaneously, which shortens the average detection time and significantly improves the detection efficiency.

Description of drawings

Figure 1 Schematic diagram of the structure of the water quality heavy metal detection device with half of the cover removed;

Fig. 2 Front view of adsorption rod group;

Fig. 3 Schematic diagram of a-a section in Fig. 2;

Figure 4 Front view of the partition set;

Figure 5 Front view of the partition;

Fig. 6 Front view of housing group;

Figure 7 Top view of the shell group.

Among them: A. Adsorption rod group, B. Separator group, C. Shell group, 1. Shaft, 2. Motor, 3. Adsorption rod I, 4. Adsorption rod II, 5. Adsorption rod III, 6. Adsorption rod IV, 7. Connecting rod II, 8.I Connecting rod II, 9. Adsorbent, 10. Through hole, 11. Spoiler bag, 12. Partition I, 13. Partition II, 14. Partition III, 15 .Separator IV, 16. Rectangular groove I, 17. Rectangular groove II, 18. Rectangular part, 19. Semicircular part, 20. Interface I, 21. Interface II, 22. Interface III.

Detailed ways

Example 1 A heavy metal detection device for oilfield produced water quality

As shown in Figure 1, an oilfield produced water quality heavy metal detection device consists of an adsorption rod group A, a separator group B, a housing group C, a shaft 1 and a motor 2, and the adsorption rod group A is driven by the motor 2 through the shaft 1. , rotate once every 30 minutes and rotate 90°, the partition group B is consolidated into the shell C, and forms four chambers in the shell C.

As shown in Figures 2 and 3, the adsorption rod group A is composed of adsorption rod I3, adsorption rod II4, adsorption rod III5, adsorption rod 6. Composed of connecting rod II7 and connecting rod III8, adsorption rod I3 and adsorption rod III5 are connected through connecting rod III 8, adsorption rod II 4 and adsorption rod IV 6 are connected through connecting rod II 7, connecting rod II 7 and connecting rod III 8 vertical consolidation;

The adsorption rod is a cylindrical shell with a diameter d1 of 10-20mm and a height h1 of 50-100mm, and the adsorbent 9 is placed in the shell to realize the adsorption of heavy metals to be sampled. There are 900 hemispherical spoilers 11 arranged on the shell, which are evenly divided into 30 layers from top to bottom, and 30 of each layer are evenly distributed on the outer surface of the layer, and the spoilers 11 of two adjacent layers are not arranged in misalignment , the distance L1 between each second layer is 20-30mm; the spoiler 11 is a hemisphere with a diameter d3 of 5-6mm, and a circular through hole 10 is arranged in the center of each spoiler, and the diameter d2 of the through hole 10 is 3-4mm.

As shown in Figures 4 and 5, the separator group B is composed of separator I 12, separator II 13, separator III 14 and separator IV 15, the four separators point to the same center of the circle, and are connected with the adsorption rod group The centers of A are coincident, and the angle between partition I 12 and partition II 13 60-70°, forming a desorption detection chamber, the angle between the separator II 13 and the separator III 14 The cleaning chamber is formed at 90°, and the included angle between partition III 14 and partition IV 15 60-70° to form a drying chamber, and the partition I 12 and partition IV 15 form an adsorption sampling chamber;

Each partition is a rectangular plate with a width L2 of 40mm and a length L3 of 80-160mm, from bottom to top a rectangular slot I16 with a width L6 of 8-16mm and a length L7 of 13-28mm and a width L4 For 14-24mm, long L5 is the rectangular slot II 17 of 54-104mm.

As shown in Figures 6 and 7, the housing group C is composed of a rectangular part 18, a semicircular part 19, an interface I20, an interface II21, and an interface III 22. The rectangular part 18 has a width L8 of 40 mm and a length L9 of 160-320mm, a cuboid shell with a height h3 of 40mm, the semicircular part 19 is a semicircular shell with a radius R1 of 80-160mm, a width L8 of 40mm, and the outer circumference of the semicircle is closed, the interface I 20, the interface II 21. Both the interface III and 22 are cylinders with a diameter d4 of 5 mm and a height h3 of 8-10 mm, distributed on the outer circumference of the semicircular part 19 and communicated with the inner cavity of the housing, and are respectively located in the above-mentioned desorption detection chamber, The centerlines of the cleaning chamber and the drying chamber are respectively connected with external desorption detection devices, cleaning devices and drying devices.

All of the above shells have a wall thickness of 2-3 mm.

The working process of the present invention is as follows: the detection device is placed on the flowing water surface containing metal ions, the adsorption rod is immersed in the water, and the turbulence bag disturbs the flow field of the water flow to generate a flow field that is beneficial to adsorption. The metal ion is in the adsorption process; when the adsorption process is completed, the motor drives the adsorption rod to rotate 90°, and the adsorption rod that has been adsorbed enters the desorption detection process, and at the same time the next adsorption rod placed in water enters the adsorption process; after the desorption detection process is completed, the motor Drive the adsorption rod to rotate 90°, and the adsorption rod enters the cleaning process; after the cleaning and measurement process is completed, the motor drives the adsorption rod to rotate 90°, and the adsorption rod enters the drying process, and the motor drives the adsorption rod to rotate 90° again. The dried adsorption rod is immersed in water to absorb metals Ions, reciprocating, regularly detected.

The present invention adopts the method of first adsorption and then desorption detection under the working state, which improves the lower limit of the concentration of the measured substance and improves the detection accuracy. At the same time, the turbulence package changes the fluid flow field and improves the adsorption efficiency; Four processes shorten the average detection time and improve detection efficiency.

Claims (6)

1. a kind of oil field extracted water water quality heavy metal analysis device, it includes：Adsorbing bar group（A）, partition plate group（B）, housing group （C）, axis（1）, motor（2）, desorption detection device, cleaning device and drying device；

The housing group（C）For a housing, top is semi-circular portion（19）With the rectangular segment of lower part（18）Or 180~ 240 ° of arcs；It is semi-circular portion（19）Excircle and rectangular segment（18）It is closed at both ends, rectangular segment（18）Lower end It is open；

The partition plate group（B）Fixed housing（C）In, it is distributed in sector, by housing（C）It is divided into four chambers；Partition plate I（12） With partition plate II（13）Between for desorption test chamber, partition plate II（ 13）With partition plate III（14）Between for cleaning chamber, partition plate I（12） With partition plate IV（15）Between be adsorption sampling chamber；

Each partition plate be equipped with adsorbing bar by slot；

Semi-circular portion（19）Periphery is equipped with interface, interface I（20）, interface II（21）With interface III（ 22）It is separately positioned on Test chamber, cleaning chamber and adsorption sampling chamber are desorbed, is connected with desorption detection device, cleaning device, drying device；

Adsorbing bar group（A）For four adsorbing bars, adsorbing bar is fixed on axis by connecting rod（1）On, the angle between them is right angle, Axis（1）With housing（C）Axis connects, and and motor（2）Connection.

2. a kind of oil field extracted water water quality heavy metal analysis device according to claim 1, it is characterised in that：The suction Attached stick is cylindrical housings, and adsorbent is placed in housing（9）If housing is equipped with dried layer hemispherical flow-disturbing bag（11）, flow-disturbing bag Centrally disposed through hole（10）.

3. a kind of oil field extracted water water quality heavy metal analysis device according to claim 2, it is characterised in that：The suction Attached stick is that diameter d1 is 10-20mm, and high h1 is 50-100mm, and 900 hemispherical flow-disturbing bags are set on housing（11）, from top to bottom Uniformly point 30 layers of setting, 30 every layer are distributed on the outer surface of this layer, and the flow-disturbing bag of adjacent two layers（11）Not Heterogeneous Permutation, Every two layers of spacing L1 is 20-30mm；Flow-disturbing bag 11 is the hemisphere that diameter d3 is 5-6mm, through hole（10）Diameter d2 be 3- 4mm。

4. a kind of oil field extracted water water quality heavy metal analysis device according to claim 1,2 or 3, it is characterised in that：Institute The adsorbing bar group stated（A）Pass through connecting shaft（1）By motor（2）Driving rotates, and rotates 90 ° every time.

5. a kind of oil field extracted water water quality heavy metal analysis device according to claim 4, it is characterised in that：Partition plate Ⅰ（12）With partition plate II（ 13）AngleFor 60-70 °；Partition plate II（ 13）With partition plate III（14）AngleFor 90 °；Partition plate III （14）With partition plate IV（ 15）AngleFor 60-70 °.

6. a kind of oil field extracted water water quality heavy metal analysis device according to claim 5, it is characterised in that：Described is every A partition plate is that width L (2) is 40mm, and long L (3) is the rectangular slab of 80-160mm, is from bottom to top 8-16mm for one wide L (6), The rectangular slot I (16) and one wide L (4) that long L (7) is 13-28mm are 14-24mm, and long L (5) is the rectangle of 54-104mm Slot II（17).