Quartz fracturing sand production system
By combining a cyclone separator and a recovery tank, efficient solid-liquid separation and recycling of quartz fracturing sand are achieved, solving the problem of sand and gravel waste in traditional separation methods and reducing production costs.
Patent Information
- Application Number
- CN202520300555.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-24
- Publication Date
- 2026-02-06
- Estimated Expiration
- 2035-02-24
AI Technical Summary
In existing quartz fracturing sand production systems, traditional solid-liquid separation methods are insufficient to meet the separation requirements of fine sand, resulting in sand and gravel waste.
The raw sand is pumped to the hydrocyclone device by a combination of a hydrocyclone device and a pressure pump for solid-liquid separation. The separated water is then recovered through a recovery tank, allowing the sand and gravel to be recycled and avoiding direct discharge.
It improves the solid-liquid separation effect, reduces sand and gravel waste, and saves production costs.
Smart Images
Figure CN223875225U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to quartz fracturing sand production technical field especially a quartz fracturing sand production system. BACKGROUND
[0002] The quartz fracturing sand is a kind of proppant used in petroleum industry.In prior art, quartz fracturing sand is generally made of natural quartz sand as raw material, and is obtained by screening, impurity removal, washing, grading, drying and other processes in turn.The existing quartz sand production system adopts screw mode or water wheel mode to carry out solid-liquid separation, the screw mode is through 45 degrees rotation, and solid-liquid separation is realized by friction, and the water wheel mode is through water leakage to realize solid-liquid separation, but since fracturing sand is very fine, it will become fluid after mixing with water, and the traditional solid-liquid separation mode is difficult to meet the requirements, and the sand-water mixture after solid-liquid separation is directly discharged, which will cause sandstone waste. SUMMARY
[0003] The utility model discloses a quartz fracturing sand production system to solve the above problems and technical requirements, so that the solid-liquid separation effect is improved, and the problem of sandstone waste after separation is solved.
[0004] The technical scheme of the utility model is as follows:
[0005] The utility model provides a quartz fracturing sand production system, which comprises:
[0006] A washing machine is used for washing raw sand;
[0007] A screening device is connected with the washing machine and is used for filtering the washed raw sand;
[0008] A sand settling tank is located below the ground and is used for collecting the raw sand filtered by the screening device;
[0009] At least one sandstone separation assembly is provided, which comprises a cyclone device, a dehydration screen device and a scrubbing device arranged in sequence, the side part of the cyclone device is connected with the sand settling tank through a first pipeline, a pressure pump is arranged on the first pipeline and is used for pumping the raw sand in the sand settling tank to the cyclone device, the cyclone device is used for separating solid and liquid, and the separated sand and stone enter the dehydration screen device for dehydration;
[0010] A recovery tank is connected with the top of the cyclone device through a second pipeline, and is used for recovering the sand-water mixture after solid-liquid separation, and the recovery tank is connected with the sand settling tank.
[0011] Optionally, the sandstone separation assembly is at least two groups, and each group of sandstone separation assemblies is arranged in parallel at intervals.
[0012] Optionally, the dewatering screen device and the scrubbing device in each group of the sandstone separation assembly are multiple groups, and the dewatering screen device and the scrubbing device are arranged alternately.
[0013] Optionally, the dewatering screen device comprises a first dewatering mechanism and a second dewatering mechanism arranged in sequence.
[0014] The first dewatering mechanism is used for primary dewatering of the sandstone.
[0015] The second dewatering mechanism comprises a spraying structure used for spraying water mist when the sandstone is dewatered.
[0016] Optionally, the scrubbing device comprises a multi-stage scrubbing mechanism, and the number of stages and the scrubbing time of the scrubbing mechanism are determined according to the sphericity of the quartz fracturing sand.
[0017] Optionally, in each group of the sandstone separation assembly, the bottom of the cyclone device, the dewatering screen device and the scrubbing device is provided with a support frame, and the height of the support frame decreases in sequence according to the conveying direction of the sandstone.
[0018] Optionally, the quartz fracturing sand production system further comprises a water tank, and the water tank is connected with the drain port of the dewatering screen device through a collecting pipe for collecting the excess water after dewatering.
[0019] Optionally, a funnel structure is arranged in the recovery tank, the edge of the funnel structure is connected with the side wall of the recovery tank, and the funnel structure is used for converging the sand-water mixture after solid-liquid separation.
[0020] Optionally, the sandstone separation assembly further comprises a linear screen device, and the linear screen device is arranged at the tail of the sandstone separation assembly and is used for butt joint with the sandstone conveying belt.
[0021] The beneficial technical effects of the utility model are as follows:
[0022] The quartz fracturing sand production system disclosed by the utility model pumps the raw sand in the sand settling tank to the cyclone device through the pressure pump, realizes solid-liquid separation of the fluid raw material through the cyclone device, has better solid-liquid separation effect than the conventional screw type and water wheel type solid-liquid separation device, and concentrates the excess water separated in the cyclone device and returns the water to the recovery tank through the second pipeline. BRIEF DESCRIPTION OF DRAWINGS
[0023] Figure 1It is a structure schematic view of a quartz fracturing sand production system provided by the embodiment of the utility model.
[0024] Figure 2 It is another structure schematic view of a quartz fracturing sand production system provided by the embodiment of the utility model. DETAILED DESCRIPTION
[0025] The technical scheme of the utility model will be described clearly and completely in combination with the embodiments, and obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative efforts belong to the protection scope of the utility model.
[0026] The person skilled in the art can understand that, unless otherwise defined, all the terms (including technical terms and scientific terms) used herein have the same meaning as the general understanding of the person skilled in the art in the field to which the utility model belongs. It should also be understood that, such as those terms defined in the general dictionary, should be understood as having the same meaning as in the context of the prior art, and unless specifically defined as here, should not be interpreted as idealized or overly formal.
[0027] The person skilled in the art can understand that, unless otherwise stated, the singular form "one", "a", "said" and "the" used herein can also include the plural form. It should be further understood that the phrase "comprising" used in the specification of the utility model means that the features, integers, steps, operations, elements and / or components exist, but does not exclude the existence or addition of one or more other features, integers, steps, operations, elements, components and / or their groups. The phrase "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.
[0028] As Figure 1 and Figure 2 The utility model discloses a quartz fracturing sand production system, which comprises a washing machine 100, a screening device 200, a sand settling tank 300, at least one set of sandstone separation assembly 600 and a recovery tank 800.
[0029] Specifically, the washing machine 100 is used for cleaning raw sand, and the raw sand is the raw material for producing quartz fracturing sand. The screening device 200 is connected with the washing machine 100, or the inlet of the screening device 200 can be understood as being connected with the sand outlet of the washing machine 100. The raw sand cleaned by the washing machine 100 is filtered through the screening device 200, and some impurities are filtered out, so that the cleanliness of the raw sand is further improved.
[0030] The grit tank 300 is located below the ground, and is used for collecting raw sand filtered by the screening device 200. The raw sand in the grit tank 300 is a mixture of sand and water. Since the raw sand is in a fluid state after being mixed with water, the raw sand can be drained to the sandstone separation assembly 600 by the pressure pump 400 for solid-liquid separation, and the separated sandstone is subjected to dehydration screening and scrubbing and polishing, so that the required quartz fracturing sand is obtained.
[0031] Considering the actual installation site of the fracturing sand production system, the sandstone separation assembly 600 in the embodiment of the utility model can be provided as one group or multiple groups (two groups or more than two groups). For each group of sandstone separation assemblies 600, the sandstone separation assembly 600 specifically comprises: a cyclone device, a dehydration screen device 620 and a scrubbing device 630 arranged in sequence. The side of the cyclone device is connected with the grit tank 300 through the first pipeline 500. The first pipeline 500 is provided with the pressure pump 400, which is used for pumping the raw sand in the grit tank 300 to the cyclone device. The cyclone device can realize solid-liquid separation of the raw sand by high-speed rotation. The separated sandstone enters the dehydration screen device 620 for dehydration. It can be understood that, for different groups of sandstone separation assemblies 600, when the entire quartz fracturing sand system is arranged in parallel, the cyclone device of each group is connected with the grit tank 300 through the first pipeline 500 respectively. When the entire quartz fracturing sand system is arranged in series, adjacent quartz fracturing sand systems are connected. This is beneficial to saving the installation space of the equipment.
[0032] The recovery tank 800 is connected with the top of the cyclone device through the second pipeline 700, and is used for recovering the sand-water mixture after solid-liquid separation. The recovery tank 800 is connected with the grit tank 300. In this way, the excess fluid (water mixed with a small amount of sandstone) generated from the solid-liquid separation of the cyclone device is overflowed to the recovery tank 800, and then flows back to the grit tank from the recovery tank 800. Under the action of the pressure pump 400, the raw sand is subjected to solid-liquid separation again for circulation, so that the waste of sandstone is avoided, and the cost is saved.
[0033] The fracturing sand production system provided in the embodiment of the utility model pumps the raw sand in the grit tank 300 to the cyclone device through the pressure pump 400. The cyclone device can realize solid-liquid separation of the fluid raw material. Compared with the conventional screw type and water wheel type solid-liquid separation devices, the solid-liquid separation effect is better. The excess water after separation in the cyclone device is collected and flows back to the recovery tank 800 through the second pipeline 700. Since the backflow water still contains a small amount of sandstone, the sandstone is transported to the grit tank 300 for recycling after being recovered and deposited. In this way, the recycling of the sandstone raw material is realized, the waste of sandstone caused by direct discharge of the liquid after solid-liquid separation is avoided, and the cost is saved.
[0034] In some embodiments, considering the limitations of certain installation scenarios, such as Figure 2 As shown, the sand and gravel separation component 600 has at least two sets ( Figure 2 (The diagram shows four groups), with each group containing 600 sand and gravel separation components arranged side-by-side at intervals. Figure 2 The sand and gravel separation components 600 shown in the diagram are in parallel. The cyclone device of each sand and gravel separation component 600 is connected to the sedimentation tank 300 through the first pipeline 500. The first pipeline 500 is equipped with a pressure pump 400, which is used to pump the raw sand in the sedimentation tank 300 to the sand and gravel separation component 600 for solid-liquid separation.
[0035] In some embodiments, each set of the dewatering screen device 620 and the scrubbing device 630 in the sand and gravel separation assembly 600 consists of multiple sets, and the dewatering screen device 620 and the scrubbing device 630 are arranged alternately, so that multiple rounds of dewatering and scrubbing can be performed, which is beneficial to further improve the quality of fracturing sand.
[0036] In some embodiments, the dewatering screen device 620 includes a primary dewatering mechanism 610 and a secondary dewatering mechanism 620 arranged sequentially. The primary dewatering mechanism 610 is used for initial dewatering of the sand and gravel; the secondary dewatering mechanism 620 includes a spray structure for spraying clean water during the dewatering of the sand and gravel. This multi-stage dewatering process ensures more thorough desliming of the sand, while the spraying of clean water removes mud, water, and dust carried by the sand itself, thus maintaining the turbidity of the finished fracturing sand.
[0037] In some embodiments, the scrubbing device 630 includes a multi-stage scrubbing mechanism. The number of stages and scrubbing time required by the scrubbing mechanism are determined based on the sphericity of the quartz fracturing sand. Sphericity is used to represent the quality of the quartz fracturing sand; higher sphericity generally indicates better sand quality, while lower sphericity indicates poorer sand quality. The scrubbing device 630 can remove the coating from the surface of the sand, reduce turbidity, and improve the quality of the sand.
[0038] In some embodiments, in each group of sand and gravel separation components 600, the bottom of the cyclone device, the dewatering screen device 620 and the scrubbing device 630 are all provided with a support frame. The height of the support frame decreases sequentially according to the direction of sand and gravel transmission, which facilitates the rapid transport of sand and gravel between different devices.
[0039] In some embodiments, the quartz fracturing sand production system further includes a water tank; the water tank is connected to the drain outlet of the dewatering screen device 620 via a manifold, for collecting excess water after dewatering.
[0040] In some embodiments, a funnel structure 810 is arranged in the recovery tank 800, the edge of the funnel structure 810 is connected with the side wall of the recovery tank 800, and the funnel structure 810 is used for converging the sand-water mixture after solid-liquid separation.
[0041] Optionally, the sandstone separation assembly 600 further comprises a linear screen device 640, which is arranged at the tail of the sandstone separation assembly 600 and is used for being connected with the sandstone conveying belt. The linear screen device 640 synchronously screens the sandstone during conveying the sandstone, so as to filter out the sandstone or impurities that do not meet the requirements, and improve the quality of the final quartz fracturing sand.
[0042] The above only describes the preferred embodiments of the present application, and the present application is not limited to the above embodiments. It can be understood that other improvements and changes directly derived or thought by those skilled in the art without departing from the spirit and concept of the present application should be considered to be included in the protection scope of the present application.
Claims
1. A quartz frac sand production system characterized by, The application relates to a sandstone separation assembly. The sandstone separation assembly comprises a washing machine for washing raw sand; a screening device connected with the washing machine for filtering the washed raw sand; a sand pool located below the ground for collecting the filtered raw sand; a sandstone separation assembly comprising a cyclone device, a dehydration screen device and a scrubbing device arranged in sequence, the side of the cyclone device being connected with the sand pool through a first pipeline, the cyclone device being used for solid-liquid separation of the raw sand, and the separated sand and stone entering the dehydration screen device for dehydration; a recovery tank connected with the top of the cyclone device through a second pipeline for recovering the sand-water mixture after solid-liquid separation, the recovery tank being connected with the sand pool.
2. The quartz frac sand production system of claim 1, wherein, The sandstone separation assembly is at least two groups, and each group of the sandstone separation assembly is arranged in parallel.
3. The quartz frac sand production system of claim 2, wherein, The dehydration screen device and the scrubbing device in each group of the sandstone separation assembly are multiple groups, and the dehydration screen device and the scrubbing device are arranged alternately.
4. The quartz frac sand production system of any one of claims 1-3, wherein, The dehydration screen device comprises a primary dehydration mechanism and a secondary dehydration mechanism arranged in sequence. The primary dehydration mechanism is used for primary dehydration of the sandstone. The secondary dehydration mechanism comprises a spraying structure for spraying water mist when the sandstone is dehydrated.
5. The quartz frac sand production system of claim 3, wherein, The scrubbing device comprises multiple scrubbing mechanisms, and the number of the scrubbing mechanisms and the scrubbing time are determined according to the sphericity of the quartz fracturing sand.
6. The quartz frac sand production system of claim 3, wherein, In each group of the sandstone separation assembly, the bottom of the cyclone device, the dehydration screen device and the scrubbing device is provided with a support frame, and the height of the support frame is sequentially decreased according to the transmission direction of the sandstone.
7. The quartz frac sand production system of claim 1, wherein, The application further comprises: a water tank; the water tank is connected with the drainage port of the dehydration screen device through a collecting pipe for collecting the excess moisture after dehydration.
8. The quartz frac sand production system of claim 1, wherein, The recovery tank is provided with a funnel structure, the edge of the funnel structure being connected with the side wall of the recovery tank, and the funnel structure being used for converging the sand-water mixture after solid-liquid separation.
9. The quartz frac sand production system of claim 1, wherein, The sandstone separation assembly further comprises a linear screen device arranged at the tail of the sandstone separation assembly for butt joint with a sandstone conveying belt.