Oil stain separation treatment device for brine treatment process

Abstract

The utility model provides an oil stain separation treatment device for saline water treatment process, which is used for filtering impurities in saline water solution and comprises a tank body, one side of the tank body is provided with a feed port, the side wall of the tank body opposite to the feed port is connected with a discharge pipe, the outer side end part of the discharge pipe is connected with a discharge valve, and the discharge valve is connected with a discharge valve. A drain outlet is formed above the tank body corresponding to the height position of the discharge hole; a box-type filter is arranged at the position, corresponding to the end of the inner side of the discharging pipe, of the tank body, a saline solution enters the tank body from the feeding port, passes through the box-type filter and then is discharged through the discharging valve, and a plurality of filtering holes are formed in the box-type filter. The device is reasonable in structural design, the box-type filter is designed at the position of the discharge port, on one hand, a saline solution to be discharged from the tank body can be filtered through the filter holes of the box-type filter, on the other hand, the vertical baffle of the box-type filter is of a detachable structure, the vertical baffle can be pulled out according to needs, impurities on the filter holes of the baffle are convenient to clean, and the service life of the tank body is prolonged. Cost is low, and filtering and cleaning are convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of brine preparation technology, in particular to an oil separation and treatment device for a brine treatment process. Background Art

[0002] In the brine (KCl solution) process, the raw material KCl usually contains impurities, organic matter, oil, and anti-caking agent. The anti-caking agent in the imported KCl raw material is tartaric acid mTA. Oil and anti-caking agent are mixed in the saturated KCl solution and must be removed, otherwise it will cause the membrane tube of the membrane filter in the subsequent process to be blocked, the adsorption performance of the resin tower to decrease, the voltage of the electrolytic cell to increase, and the efficiency of the ion membrane to decrease. In serious cases, production cannot be carried out.

[0003] In the brine processing technology, the raw material KCl is put into the salt tank, passes through the baffle tank, and then enters the flotation tank. In the flotation tank, auxiliary materials KOH and H 3 PO 4 Finally, the oil and other pollutants are separated from the brine through the flotation tank, and then sent to the Kai membrane filter for the subsequent process after passing through the reaction tank and clarification tank.

[0004] At present, the existing separation of oil and other impurities in the flotation tank is usually done by adding auxiliary materials and using flotation method. After the oil and other impurities are separated from the brine, they float on the surface of the brine solution. The separation of a small amount of oil and other impurities is done by scooping the oil and other impurities from the surface of the brine solution. For the separation of a large amount of oil and other impurities, a sewage outlet is designed above the flotation tank, and an outlet valve is designed below the height of the sewage outlet. After the outlet valve is closed, the outlet valve discharges a small amount of the separated brine solution, and the oil and other impurities floating on the surface of the brine solution are discharged from the sewage outlet above. However, in this design structure, at the position of the outlet valve, although most of the oil and impurities can be separated by flotation to the top of the brine solution, there are still some oil and impurity mixed solutions floating from the bottom to the top and some mechanical impurities discharged together with the outlet valve, resulting in the discharge of impurities such as oil and other impurities in the brine solution, which causes the subsequent membrane tube of the Kai membrane filter to be blocked, resulting in the decrease of the adsorption performance of the resin tower, the increase of the cell voltage of the electrolytic cell, and the decrease of the efficiency of the ion membrane, affecting normal production. Utility Model Content

[0005] The technical problem to be solved by the utility model is: in order to overcome the shortcomings of the prior art, the utility model provides an oil separation and treatment device for a brine treatment process, which can further filter the discharge port position to avoid oil and mechanical impurities being discharged with the brine solution during flotation discharge, thereby effectively improving the quality of the brine solution.

[0006] The utility model solves the technical problem by adopting the following technical solution: an oil separation and treatment device for a salt water treatment process, which is used for filtering impurities in a salt water solution, and comprises a tank body, wherein a feed inlet is provided on one side of the tank body, a discharge pipe is connected to a side wall of the tank body opposite to the feed inlet, a discharge valve is connected to the outer end of the discharge pipe, a sewage outlet is provided above the height position of the tank body corresponding to the discharge inlet; a box filter is provided at the inner end position of the tank body corresponding to the discharge pipe, and the salt water solution enters the tank body from the feed inlet and is discharged through the discharge valve after passing through the box filter, and a plurality of filter holes are provided on the box filter.

[0007] In the above scheme, compared with the traditional flotation tank, a box filter is designed at the position of the discharge pipe. Based on the flotation method, the box filter is used to perform another filtration before discharging, and impurities are filtered through the filter holes, so as to further improve the quality of the brine solution.

[0008] Furthermore, a plurality of baffles are arranged in the tank body along the direction from the feed port to the discharge port, and two adjacent baffles are staggered in the height direction. The staggered arrangement of the baffles provides an effective channel for guiding the brine from the feed port to the discharge pipe, thereby increasing the flotation reaction time and separating the oil impurities from the brine solution.

[0009] Furthermore, the box-type filter is arranged between the baffle plate near the discharge port and the inner wall of the tank body corresponding to the baffle plate.

[0010] Preferably, the box filter includes a transverse baffle and a plurality of vertical baffles, the transverse baffle is connected and fixed between the inner wall of the tank body and the baffle on the corresponding side, a vertical slot is provided on the baffle on the corresponding side and the inner wall of the tank body above the corresponding transverse baffle, the vertical baffle is inserted and arranged in the vertical slot, a plurality of filter holes are provided on the transverse baffle and the vertical baffle, and the transverse baffle and the vertical baffle together form a box filter. In actual use, the vertical baffle can be pulled out along the vertical slot according to the filtering requirements to clean the impurities on the filter holes, thereby ensuring the filtering effect.

[0011] Preferably, the filter hole diameter is 16 mm.

[0012] Preferably, the transverse baffles and the vertical baffles are FRP plates.

[0013] The beneficial effect of the utility model is that the oil separation and treatment device for the brine treatment process provided by the utility model has a reasonable structural design, and a box-type filter is designed at the discharge port. On the one hand, the brine that is about to be discharged from the tank body can be filtered through the filter holes of the box-type filter, and on the other hand, the vertical baffle of the box-type filter is a detachable structure, and the vertical baffle can be pulled out as needed, which is convenient for cleaning impurities on the filter holes of the baffle, with low cost and convenient and quick filtering and cleaning. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the optimal embodiment of the utility model.

[0016] Figure 2 yes Figure 1 Top view of the .

[0017] In the figure, 1, sewage outlet 2, feed inlet 3, box filter 3-1, vertical baffle 3-2, horizontal baffle 4, slot 5, discharge pipe 6, tank body 7, baffle. DETAILED DESCRIPTION

[0018] The utility model is now described in further detail in conjunction with the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, so they only show the components related to the utility model, and the directions and references (for example, up, down, left, right, etc.) can only be used to help describe the features in the drawings. Therefore, the following specific embodiments are not adopted in a restrictive sense, and the scope of the subject matter claimed is limited only by the attached claims and their equivalents.

[0019] like Figure 1 and Figure 2 The oil separation and treatment device for a salt water treatment process is the best embodiment of the utility model. The oil separation and treatment device is used before the membrane filter in the salt water process to filter impurities in the salt water solution.

[0020] Specifically, the oil separation and treatment device provided in this embodiment includes a tank body 6. Figure 1 As shown, a feed port 2 is provided at the lower section of the left side of the tank body 6, a sewage outlet 1 is provided at the upper section, and a discharge pipe 5 is connected to the upper section of the right side of the tank body 6. In the design setting, the height of the sewage outlet 1 is higher than the height of the discharge pipe 5, so that the oil impurities separated by the flotation method float above the discharge position, so that the clarified brine solution after flotation is discharged from the discharge pipe 5. A discharge valve is connected to the outer end of the discharge pipe 5, and the discharge valve can control the flow rate of the discharge at the position of the discharge pipe 5. The oil separation and treatment device also needs to be equipped with gas pipelines, releasers, distributors and other structures according to the brine process requirements. This part of the structure is a conventional setting of commercially available flotation tanks and will not be described here.

[0021] In this embodiment, in order to provide an effective channel for guiding the brine from the feed port 2 to the discharge pipe 5, so as to increase the flotation reaction time and thus separate the oil impurities from the brine solution, three baffles 7 are provided in the tank body 6 along the direction from the feed port 2 to the discharge port, and the adjacent baffles 7 are staggered in the height direction.

[0022] In the flotation process of the brine process, the brine solution enters the tank body 6 through the feed port 2, and auxiliary materials KOH and H are added into the tank body 5. 3 PO 4 , with the action of air flotation, oil and other substances are separated from the brine, float on the surface of the brine solution, and are collected and discharged through the sewage outlet 1. In order to further improve the quality of the brine solution, a box filter 3 is provided at the inner end of the tank body 6 corresponding to the discharge pipe 5. The brine solution enters the tank body 6 from the feed port 2 and passes through the box filter 3 before being discharged through the discharge valve. Compared with the traditional air flotation tank, the secondary filtration is set by the box filter 3 before discharging, which is used to further improve the quality of the brine.

[0023] Specifically, Figure 1 and Figure 2 As shown, the box filter 3 is arranged between the baffle 7 near the discharge port and the inner wall of the tank body 6 corresponding to the baffle 7, and includes a transverse baffle 3-2 and two vertical baffles 3-1. The transverse baffle 3-2 and the vertical baffle 3-1 together form the box filter 3. The transverse baffle 3-2 is connected and fixed between the inner wall of the tank body 6 and the baffle 7 on the corresponding side. Profiles can be fixed on both sides of the baffle 7 above the transverse baffle 3-2 and the inner wall of the tank body 6, respectively, and a vertical slot 4 is designed on the profile. The vertical baffle 3-1 is inserted and set in the vertical slot 4 and can be disassembled as needed. In actual production, the transverse baffle 3-2 and the vertical baffle 3-1 are made of FRP plates, and each FRP plate is evenly opened with 500 filter holes with a diameter of 16 mm. In actual use, the vertical baffle 3-1 can be pulled out along the vertical slot 4 according to the filtering requirements to clean the impurities on the filter holes, thereby ensuring the filtering effect.

[0024] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An oil separation and treatment device for a salt water treatment process, used for filtering impurities in a salt water solution, characterized in that: The invention comprises a tank body (6), wherein a feed port (2) is provided on one side of the tank body (6), a discharge pipe (5) is connected to the side wall of the tank body (6) opposite to the feed port (2), a discharge valve is connected to the outer end of the discharge pipe (5), and a sewage outlet (1) is provided above the tank body (6) at a height corresponding to the discharge port; A box filter (3) is provided at the inner end of the tank body (6) corresponding to the discharge pipe (5). The salt solution enters the tank body (6) from the feed inlet (2), passes through the box filter (3), and is discharged through the discharge valve. The box filter (3) is provided with a plurality of filter holes.

2. The oil separation and treatment device for a brine treatment process according to claim 1, characterized in that: A plurality of baffles (7) are arranged in the tank body (6) along the direction from the feed port (2) to the discharge port, and adjacent baffles (7) are staggeredly distributed in the height direction.

3. The oil separation and treatment device for a brine treatment process according to claim 2, characterized in that: The box-type filter (3) is arranged between the baffle plate (7) near the discharge port and the inner wall of the tank body (6) corresponding to the baffle plate (7).

4. The oil separation and treatment device for a brine treatment process according to claim 3, characterized in that: The box filter (3) comprises a transverse baffle (3-2) and a plurality of vertical baffles (3-1); the transverse baffle (3-2) is connected and fixed between the inner wall of the trough body (6) and the baffle (7) on the corresponding side; a vertical slot (4) is provided above the corresponding transverse baffle (3-2), on the baffle (7) on the corresponding side and on the inner wall of the trough body (6); the vertical baffle (3-1) is inserted into the vertical slot (4); a plurality of filter holes are provided on the transverse baffle (3-2) and the vertical baffle (3-1); the transverse baffle (3-2) and the vertical baffle (3-1) together form the box filter (3).

5. The oil separation and treatment device for a brine treatment process according to claim 4, characterized in that: The filter hole diameter is 16 mm.

6. The oil separation and treatment device for a brine treatment process according to claim 4, characterized in that: The transverse baffle (3-2) and the vertical baffle (3-1) are FRP plates.

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