CN112452017A - Solid-liquid separation system, method and equipment with solid-liquid separation system - Google Patents

Solid-liquid separation system, method and equipment with solid-liquid separation system Download PDF

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Publication number
CN112452017A
CN112452017A CN202011352172.7A CN202011352172A CN112452017A CN 112452017 A CN112452017 A CN 112452017A CN 202011352172 A CN202011352172 A CN 202011352172A CN 112452017 A CN112452017 A CN 112452017A
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CN
China
Prior art keywords
solid
liquid
tank
phase
separation system
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Application number
CN202011352172.7A
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Chinese (zh)
Inventor
刘存勇
胡送桥
吴友勇
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Hunan Sany Petroleum Technology Co Ltd
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Hunan Sany Petroleum Technology Co Ltd
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Priority to CN202011352172.7A priority Critical patent/CN112452017A/en
Publication of CN112452017A publication Critical patent/CN112452017A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
    • B01D29/03—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements self-supporting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D29/68—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/62—Regenerating the filter material in the filter
    • B01D29/70—Regenerating the filter material in the filter by forces created by movement of the filter element
    • B01D29/72—Regenerating the filter material in the filter by forces created by movement of the filter element involving vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
    • B01D33/03—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements
    • B01D33/0346—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements
    • B01D33/0353—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with vibrating filter elements with flat filtering elements self-supporting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
    • B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D33/00—Filters with filtering elements which move during the filtering operation
    • B01D33/44—Regenerating the filter material in the filter
    • B01D33/52—Regenerating the filter material in the filter by forces created by movement of the filter element
    • B01D33/54—Regenerating the filter material in the filter by forces created by movement of the filter element involving vibrations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/02—Filters adapted for location in special places, e.g. pipe-lines, pumps, stop-cocks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • B08B9/08—Cleaning containers, e.g. tanks
    • B08B9/093—Cleaning containers, e.g. tanks by the force of jets or sprays

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)

Abstract

The invention provides a solid-liquid separation system, a solid-liquid separation method and equipment with the solid-liquid separation system, wherein the solid-liquid separation system comprises a cleaning device, a suction device and a solid-liquid screening device, the cleaning device is used for crushing tank bottom materials, the suction device is used for sucking the crushed tank bottom materials, and the solid-liquid screening device is used for performing solid-phase and liquid-phase separation on the crushed tank bottom materials; the solid-liquid screening device comprises a filtering device and a driving device, and the driving device drives the filtering device to vibrate. According to the solid-liquid separation system, the cleaning device, the suction device and the solid-liquid screening device are integrally arranged, so that the flexibility of an application site is improved, the tank bottom material can be sucked and the solid-phase substance can be subjected to reduction treatment on the use site, and the transportation cost and the solid-hazardous treatment cost are greatly reduced; the solid-liquid screening device adopts the driving device to separate solid-phase substances and liquid-phase substances of the materials, so that the effect of screening the materials with strong adhesion such as oilfield sludge is better.

Description

Solid-liquid separation system, method and equipment with solid-liquid separation system
Technical Field
The invention relates to the technical field of suction separation devices, in particular to a solid-liquid separation system, a solid-liquid separation method and equipment with the solid-liquid separation system.
Background
At present, bottom sediments, plate knots and the like of oil field fracturing flowback fluid tanks and drilling mud tanks are generally crushed by high-pressure water jet, and a large amount of liquid phase substances are added in the crushing process. Because the materials cleaned from the tank bottom belong to dangerous waste products, and particularly the solid waste treatment cost in the dangerous waste products is high, in order to reduce the transportation cost and the solid waste treatment cost of the materials, solid-phase and liquid-phase substances are usually separated in the material cleaning process to realize the reduction treatment of the solid-phase substances.
At present, a solid-liquid separation system usually adopts a static filter plate or a screen mesh and the like to realize the separation of solid-phase substances and liquid-phase substances, but the system has an undesirable effect of screening materials with certain adhesion such as oil sludge in an oil field and is easy to block the filter plate or the screen mesh.
Disclosure of Invention
The invention solves the problem that the solid-liquid separation system has poor screening effect on materials with adhesion force and is easy to cause the blockage of a filtering device.
To solve at least one of the above problems, the present invention first provides a solid-liquid separation system comprising: the cleaning device is used for crushing tank bottom materials; the suction device is used for sucking the crushed tank bottom materials; the solid-liquid screening device is used for carrying out solid-phase and liquid-phase separation on the crushed tank bottom material; the solid-liquid screening device comprises a filtering device and a driving device, the driving device is suitable for driving the filtering device to vibrate, and the filtering device is used for receiving materials at the bottom of the crushed tank.
Compared with the prior art, the solid-liquid separation system has the advantages that the cleaning device, the suction device and the solid-liquid screening device are integrally arranged, so that the flexibility of an application site is improved, the tank bottom material can be sucked and the solid-phase material can be subjected to reduction treatment in a use site, and the transportation cost and the solid-hazardous treatment cost are greatly reduced; in the cleaning process, the solid-liquid screening device adopts the driving device to separate solid-phase substances and liquid-phase substances of the materials, so that the effect of screening the materials with strong adhesion such as oilfield sludge is better.
Preferably, the solid-liquid screening device further comprises a high-pressure spraying device, and the high-pressure spraying device faces the filtering device.
Compared with the prior art, the solid-liquid separation system has the advantages that the high-pressure spraying device is additionally arranged on the solid-liquid screening device, so that the tank bottom material adhered to the screen surface of the filtering device can be enabled to be flushed to the placement position of the solid-phase material by the spraying device, and meanwhile, the liquid-phase material generated after the tank bottom material is cleaned by water can be enabled to smoothly pass through the filtering holes of the filtering device and be placed at the placement position of the liquid-phase material, so that the screening effect of the solid-liquid screening device is better, and the solid-liquid separation system is suitable for screening of.
Preferably, the solid-liquid screening device further comprises a vibration excitation device, and the vibration excitation device is connected with the filtering device.
Compared with the prior art, the solid-liquid separation system has the advantages that the excitation device is additionally arranged on the solid-liquid screening device, so that tank bottom materials adhered to the filtering holes of the filtering device can be vibrated down by the excitation device, and liquid phase materials generated after the tank bottom materials are cleaned by water can smoothly pass through the filtering holes of the filtering device and are discharged to the placement positions of the liquid phase materials, so that the screening effect of the solid-liquid screening device is better, and the screening effect of materials such as oilfield sludge can be greatly improved.
Preferably, the solid-liquid screening device further comprises a liquid phase tank, and the liquid phase tank is arranged below the filtering device.
Compared with the prior art, the solid-liquid separation system has the advantages that the liquid phase tank is arranged on the solid-liquid screening device, and screened liquid phase substances can be effectively collected so as to be transferred uniformly or recycled subsequently.
Preferably, the solid-liquid separation system further comprises a circulating device, the circulating device comprises a first pipeline for connecting the suction device and the liquid phase tank, and a first pump and a first valve are arranged on the first pipeline.
Compared with the prior art, the solid-liquid separation system has the advantages that the circulating device is additionally arranged between the liquid phase tank and the suction device, so that liquid phase substances in the liquid phase tank are pumped into the suction device through the first pump, the self-circulation cleaning operation of the suction device is realized, the utilization rate of a water source is fully improved, the water source is saved, and the reduction treatment of tank bottom materials is facilitated; and this circulating device's simple structure, it is convenient to reform transform, only can realize retrieving the liquid phase material of screening out in the liquid phase jar to suction device through a first pump and a first valve and carry out reuse, effectively the cost is reduced.
Preferably, the cleaning device comprises a water tank and a high-pressure jet device connected with the water tank.
Compared with the prior art, the solid-liquid separation system provided by the invention is provided with the water tank on the cleaning device, is suitable for application sites without water sources, and has stronger universality; and the high-pressure jet device is additionally arranged on the water tank, so that the cleaning device realizes high-pressure cleaning and crushing operation on the tank bottom materials of the oil field fracturing backflow fluid tank or the drilling mud tank, and the pumping efficiency of the subsequent pumping device is improved.
Preferably, the suction device comprises a vacuum tank for storing the crushed tank bottom material, the vacuum tank is connected with a vacuum pump, and the vacuum tank realizes suction of the crushed tank bottom material by using the vacuum degree manufactured by the vacuum pump.
Compared with the prior art, the solid-liquid separation system is provided with the vacuum tank for storing crushed tank bottom materials, so that the field turnover rate of the solid-liquid separation system is improved; and set up the vacuum pump on the vacuum tank, utilize the vacuum pump to make the vacuum degree for the vacuum tank, realize suction device's vacuum suction operation to the realization is to the suction operation of the tank bottoms material that contains substances such as large granule gravel.
Preferably, the vacuum tank is further connected with a boom device for conveying the crushed tank bottom material.
Compared with the prior art, the solid-liquid separation system has the advantages that the arm support device capable of rotating, extending and the like is additionally arranged on the suction device, so that the solid-liquid separation system can be conveniently applied to different places, the materials in all areas of the tank bottom can be sucked, and the tank bottom materials can be completely sucked; and the arm support device with the suction pipeline is integrated on the suction device, so that the integration degree of the solid-liquid separation system is higher, and the flexibility of an application field is greatly improved.
Secondly, the equipment comprises the solid-liquid separation system and a power device for supplying power to the solid-liquid separation system.
Compared with the prior art, the equipment and the solid-liquid separation system have the same advantages compared with the prior art, and are not described again.
The solid-liquid separation method is provided again, the solid-liquid separation system is adopted, and the solid-liquid separation method comprises the following steps:
the cleaning device utilizes water to crush and loosen the tank bottom materials to generate crushed tank bottom materials comprising liquid phase materials and solid phase materials;
the suction device sucks the crushed tank bottom materials to a specified position and then flows into the solid-liquid screening device from the specified position, or the suction device directly sucks the crushed tank bottom materials into the solid-liquid screening device;
the solid-liquid screening device is used for carrying out solid-liquid separation on the crushed tank bottom material, the separated solid-phase material is discharged to a designated position from a discharge hole of the solid-phase material, and the separated liquid-phase material flows into a position arranged below the solid-liquid screening device.
Compared with the prior art, the solid-liquid separation method and the solid-liquid separation system have the same advantages compared with the prior art, and are not repeated herein.
Drawings
FIG. 1 is a side view of an apparatus according to an embodiment of the present invention;
FIG. 2 is a top view of an apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic illustration of a solid-liquid separation system according to an embodiment of the present invention;
FIG. 4 is a side view of a solid-liquid screening device according to an embodiment of the present invention;
FIG. 5 is a top view of a solid-liquid screening device according to an embodiment of the present invention.
Description of reference numerals:
1-a cleaning device, 11-a water tank, 12-a high-pressure jet device, 2-a suction device, 21-a vacuum tank, 211-a first material level sensor, 212-a second material level sensor, 22-a vacuum pump, 23-an arm frame device, 24-a fourth valve, 25-a second pump, 26-a fifth valve, 3-a solid-liquid screening device, 31-a filtering device, 32-a driving device, 33-a high-pressure spraying device, 34-an excitation device, 35-a liquid phase tank, 351-a first liquid level sensor, 352-a second liquid level sensor, 4-a circulating device, 41-a first pipeline, 42-a first pump, 43-a first valve, 44-a second valve, 45-a second pipeline, 46-a third valve and 5-a power device.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the description of the present invention, it is to be understood that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the normal use of a product.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.
In the process of cleaning sediments and plate concretions at the bottom of the oil field fracturing flowback fluid tank and the drilling mud tank, if the solid phase and the liquid phase of the material can be separated, the solid phase is subjected to reduction treatment, so that the transportation cost and the solid waste treatment cost can be greatly reduced. However, in the existing solid-liquid separation system used in the oil field oil sludge and other fields, a static filter device is usually adopted to separate solid-phase substances from liquid-phase substances, but the system has a poor screening effect on materials with certain adhesion force, such as oil sludge in the oil field, and is easy to block the filter device.
Thus an embodiment of the present invention provides a solid-liquid separation system, which is shown in fig. 1, fig. 4 and fig. 5, and comprises a cleaning device 1, a suction device 2 and a solid-liquid screening device 3; the cleaning device 1 is used for crushing tank bottom materials; the suction device 2 is used for sucking the crushed tank bottom materials; the solid-liquid screening device 3 is used for carrying out solid-phase and liquid-phase separation on the crushed tank bottom materials; the solid-liquid screening device 3 comprises a filtering device 31 and a driving device 32, the driving device 32 is suitable for driving the filtering device 31 to vibrate, and the filtering device 31 is used for receiving crushed tank bottom materials.
Wherein, the tank bottoms material is the tank bottoms deposit of oil field fracturing flowback fluid reservoir and well drilling mud jar, the board knot thing etc. and this tank bottoms material has certain adhesion, in order to prevent it from blockking up filter equipment 31's filtration pore in the mud-water separation process, in this embodiment, drive arrangement 32 has been add on solid-liquid screening plant 3, this drive arrangement 32 can drive filter equipment 31 and last continuous vibration to guarantee that the tank bottoms material that has adhesion can remove to the position of placing of solid phase material along with filter equipment 31's vibration, ensure simultaneously that the produced liquid phase material can discharge to the position of placing of liquid phase material through filter equipment 31's filtration pore side by side smoothly after water clearance tank bottoms material.
The cleaning device 1 can be externally connected with a water source to wash and crush the tank bottom materials, on one hand, the cleaning device can clean a fracturing backflow liquid tank or a drilling mud tank of an oil field, and on the other hand, the subsequent tank bottom materials can be smoothly transferred after being crushed; the tank bottom material after the aforesaid breakage is sucked to the assigned position by devices such as suction pump that suction device 2 can utilize, this tank bottom material after the breakage contains solid phase material and a large amount of liquid phase material, tank bottom material after these breakings can be sucked earlier in the appointed holding vessel, flow in solid-liquid screening plant 3 from the holding vessel again and carry out the screening operation, also can directly suck the tank bottom material of breakage to solid-liquid screening plant 3 and carry out the screening operation, concrete structure can confirm according to the volume of tank bottom material after the breakage.
The filtering device 31 is preferably planar, and can be a planar screen or filtering plate, so as to improve the efficiency of separating solid-phase substances and liquid-phase substances of the tank bottom materials after crushing; the screen or the filter plate has a certain area to ensure that the material at the bottom of the tank can be screened fully on the screen or the filter plate; the discharge port of the solid-phase material is arranged at the tail end of the screen or the filter plate, and the crushed tank bottom material is arranged above the head end corresponding to the tail end of the screen or the filter plate, so that the tank bottom material is fully screened on the filter device 31, and the screening effect of the tank bottom material is improved; the material of screen cloth or filter can select stainless steel material or plastics material (like the PVC material), can not only ensure that screen cloth or filter have longer life, and help improving the filter effect.
The driving device 32 is preferably a vibrating motor, the vibrating motor can drive the filtering device 31 to continuously vibrate, and the screen or the filter plate of the filtering device 31 can continuously vibrate at a certain angle according to the screening requirement, so that the screening efficiency of the tank bottom material is improved.
The solid-liquid separation method in this example comprises the following steps:
firstly, the cleaning device 1 utilizes water to crush and loosen materials at the bottom of the tank, so that a large amount of liquid-phase substances and some solid-phase substances which are insoluble in the liquid-phase substances are generated; then the materials at the bottom of the tank containing the liquid-phase materials and the solid-phase materials are sucked to a designated position by the suction device 2 and then flow into the solid-liquid screening device 3 from the designated position, or the materials at the bottom of the tank are directly sucked into the solid-liquid screening device 3 by the suction device 2; then, the solid-liquid sieving device 3 performs solid-liquid separation on the materials, the separated solid-phase substances are directly discharged from a discharge port of the solid-phase substances, and the separated liquid-phase substances flow into a position arranged below the solid-liquid sieving device 3 by the action of self gravity.
In the solid-liquid separation system in the embodiment, the cleaning device 1, the suction device 2 and the solid-liquid screening device 3 are integrally arranged, so that the flexibility of an application site is improved, the tank bottom material can be sucked and the solid-phase material can be subjected to reduction treatment in a use site, and the transportation cost and the solid-hazardous treatment cost are greatly reduced; in the cleaning process, the solid-liquid screening device 3 adopts the driving device 32 to separate solid-phase substances and liquid-phase substances of the materials, so that the effect of screening the materials with strong adhesion such as oilfield sludge is better.
In addition, since the screen mesh or the filter holes of the filter plate of the filter device 31 are easily blocked by the material with strong adhesion force, which is likely to cause the problem of screen paste, it is preferable that the solid-liquid sieving device 3 further includes a high-pressure spraying device 33, as shown in fig. 1 and 4, and the high-pressure spraying device 33 is disposed toward the filter device 31.
The high-pressure spraying device 33 can spray liquid with large impact force, and the liquid can impact the screen surface at high speed, so that the materials adhered to the filtering holes of the screen surface can be washed away, and the liquid-phase substances and the solid-phase substances of the materials at the bottom of the tank can be smoothly separated; the high-pressure spray device 33 can be selected from a high-pressure water gun, and the high-pressure water gun can continuously spray liquid according to needs and can also intermittently spray the liquid at regular time; be equipped with the mobile device on the high pressure spray set 33, drive high-pressure squirt and rotate if installation servo motor, realize sweeping the sifter to make the filtration pore of whole sifter cleared up.
When solid-liquid screening plant 3 carries out solid-liquid separation to the tank bottoms material that contains solid-phase material and liquid phase material, the great solid-phase material of stickness probably adheres in filter equipment 31's filtration downthehole at the screening in-process, and in order to prevent that the screen from pasting the sieve, the high pressure squirt on the high pressure spray set 33 sweeps the sifter, thereby makes the solid-phase material of separating directly discharge from the discharge gate of solid-phase material, and the liquid phase material mass energy after the separation smoothly flows into the position of arranging below the screen cloth.
The solid-liquid separation system in this embodiment adds high-pressure spray set 33 on solid-liquid screening plant 3, guarantees that the tank bottoms material that adheres at filter equipment 31 screen surface can be washed to the position of placing of solid phase material by spray set 33, ensures simultaneously that produced liquid phase material can discharge the position of placing of liquid phase material through filter equipment 31's filtration pore side by side smoothly with water clearance tank bottoms material back, makes solid-liquid screening plant 3's screening effect better, in order to adapt to the screening of materials such as oil field mud.
Further, as shown in fig. 1 and 5, the solid-liquid sieving device 3 further includes an excitation device 34, and the excitation device 34 is connected to the filtering device 31.
The vibration exciter 34 is a vibration exciter, and can generate mechanical vibration force perpendicular to the screen surface of the filter device 31, which helps materials adhered in the filter holes of the screen surface to smoothly separate from the filter holes, thereby ensuring that solid-phase materials and liquid-phase materials of tank bottom materials can be smoothly separated.
When solid-liquid screening plant 3 carries out solid-liquid separation to the tank bottoms material that contains solid phase material and liquid phase material, the great solid phase material of stickness probably adheres in the filter holes of filter equipment 31 at the screening in-process, in order to prevent that the screen paste from sifting, when the high-pressure squirt sweeps the sifter, utilize the vibration exciter of installing in filter equipment 31 below to act on screen cloth or filter, make the solid phase material mass energy that adheres in the filter holes break away from the filter holes smoothly, thereby make the liquid phase material mass energy after the separation smoothly flow in arrange the position below the screen cloth, the content of mixing with the liquid phase material among the solid phase material after the greatly reduced screening.
In the solid-liquid separation system in this embodiment, the excitation device 34 is additionally arranged on the solid-liquid screening device 3, so that it is ensured that the tank bottom material adhered in the filter hole of the filter device 31 can be vibrated down by the excitation device 34, and thus it is ensured that the liquid phase material generated after the tank bottom material is cleaned by water can smoothly pass through the filter hole of the filter device 31 and be discharged to the placement position of the liquid phase material, the screening effect of the solid-liquid screening device 3 is better, and the screening effect of materials such as oilfield sludge can be greatly improved.
Preferably, as shown in fig. 1 and 3, the solid-liquid sieving device 3 further comprises a liquid phase tank 35, and the liquid phase tank 35 is arranged below the filtering device 31.
Wherein the liquid phase tank 35 is located below the screen or the filter plate of the filtering device 31 so as to receive the liquid phase material screened by the screen or the filter plate, and the projection of the screen or the filter plate in the direction perpendicular to the ground can completely fall within the inlet range of the liquid phase tank 35, so as to ensure that the liquid phase material filtered by the screen or the filter plate can be completely collected in the liquid phase tank 35.
In the solid-liquid separation system in this embodiment, the liquid-phase tank 35 is provided on the solid-liquid screening device 3, so that the screened liquid-phase substances can be effectively collected for uniform transfer or subsequent recycling.
Preferably, the washing device 1 comprises a water tank 11 and a high-pressure jet device 12 connected to the water tank 11.
Wherein, the water tank 11 provides water source for the cleaning device 1, and the high-pressure jet device 12 can convert the water source into high-pressure water to be sprayed out, so as to crush and loosen the materials at the bottom of the tank; the high-pressure jet device 12 can be a high-pressure water gun, and the high-pressure jet device 12 can move freely within a certain range, so that a worker can flush materials at the bottom of a fracturing flowback fluid tank or a drilling mud tank of an oil field.
The high-pressure jet device 12 takes water from the water tank 11 which is previously filled with water, and then the tank bottom hardened material or sediment is crushed or loosened by the high-pressure jet water generated by the high-pressure jet device 12 for the subsequent operation of the suction device 2.
In the solid-liquid separation system in the embodiment, the cleaning device 1 is provided with the water tank 11, so that the solid-liquid separation system is suitable for application sites without water sources, and has stronger universality; and the water tank 11 is additionally provided with the high-pressure jet device 12, so that the cleaning device 1 realizes high-pressure cleaning and crushing operation on tank bottom materials of an oil field fracturing flowback fluid tank or a drilling mud tank, and the pumping efficiency of the subsequent pumping device 2 is improved.
In addition, because large particles and gravel and other substances exist in the tank bottom materials such as tank bottom sediments and plate sediments, and the traditional sand pump and the like can not carry out pumping operation, preferably, as shown in fig. 1 to 3, the pumping device 2 comprises a vacuum tank 21 for storing crushed tank bottom materials, the vacuum tank 21 is connected with a vacuum pump 22, and the vacuum tank 21 realizes pumping of the crushed tank bottom materials by utilizing the vacuum degree made by the vacuum pump 22.
The feeding port of the vacuum tank 21 is positioned at the top of the vacuum tank 21, the vacuum pump 22 is also communicated with the top of the vacuum tank 21, the vacuum tank 21 is provided with a vacuum degree through the vacuum pump 22, and the tank bottom material is sucked and stored by utilizing the vacuum degree, so that the tank bottom material containing large-particle gravel and other substances is sucked; the vacuum pump 22 adopts a roots pump, a liquid ring pump or a turbine fan to generate vacuum degree, and the vacuum pump 22 comprises a plurality of pipeline valves and a filtering system.
The solid-liquid separation method in this example comprises the following steps:
a large amount of liquid-phase substances and solid-phase substances are generated after the tank bottom is cleaned by the cleaning device 1; the vacuum pump 22 sucks vacuum from the vacuum tank 21 in advance to make the vacuum tank 21 reach a certain vacuum degree, and the tank bottom materials containing liquid-phase materials and solid-phase materials are sucked into the vacuum tank 21 by utilizing the pressure difference between the inside and the outside of the vacuum tank 21 and then flow into the solid-liquid screening device 3 from the vacuum tank 21; then, the solid-liquid sieving device 3 performs solid-liquid separation on the materials, the separated solid-phase substances are directly discharged from the discharge port of the solid-phase substances, and the separated liquid-phase substances flow into the liquid-phase tank 35 arranged below the solid-liquid sieving device 3 by the action of self gravity.
The solid-liquid separation system in the embodiment is provided with the vacuum tank 21 for storing tank bottom materials to be screened, so that the field turnover rate of the solid-liquid separation system is improved; and the vacuum pump 22 is arranged on the vacuum tank 21, the vacuum degree is generated for the vacuum tank 21 by the vacuum pump 22, and the vacuum suction operation of the suction device 2 is realized, so that the suction operation of the tank bottom materials containing large particles, gravel and other substances is realized.
Preferably, as shown in fig. 1 and 2, the vacuum tank 21 is further connected with a boom device 23 for conveying the crushed tank bottom material.
The boom device 23 is connected with a feeding port of the vacuum tank 21, the boom device 23 comprises a pipeline for conveying materials, a plurality of hydraulic rods for realizing position change of the pipeline, a rotating motor, gears and the like, so that the boom device 23 is ensured to complete rotation, extension and other actions, the crushed tank bottom materials of the oil field fracturing backflow liquid tanks and the drilling mud tanks at various positions can be smoothly pumped, and the materials at the tank bottom can enter the vacuum tank 21 through the pipeline in the boom device 23 during pumping.
In the solid-liquid separation system in the embodiment, the arm support device 23 capable of rotating, extending and the like is additionally arranged on the suction device 2, so that the application in different fields is facilitated, the suction of materials in each area of the tank bottom is realized, and the tank bottom materials are guaranteed to be sucked cleanly; and the arm support device 23 with the suction pipeline is integrated on the suction device 2, so that the integration degree of the solid-liquid separation system is higher, and the flexibility of an application field is greatly improved.
As shown in fig. 3, a fourth valve 24 for controlling the tank bottom material to enter the vacuum tank 21 is arranged between the arm support device 23 and the vacuum tank 21; a first material level sensor 211 and a second material level sensor 212 which are respectively used for detecting the position of the tank bottom material in the vacuum tank 21 are arranged in the vacuum tank 21, the first material level sensor 211 is positioned at the top of the vacuum tank 21, and the second material level sensor 212 is positioned at the bottom of the vacuum tank 21; the discharge port of the vacuum tank 21 is connected with the feed port of the liquid phase tank 35, the second pump 25 and the fifth valve 26 are arranged between the vacuum tank 21 and the liquid phase tank 35, the discharge port of the vacuum tank 21 is positioned at the bottom of the vacuum tank, and the feed port of the liquid phase tank 35 is positioned at the top of the liquid phase tank.
Preferably, as shown in fig. 3, the solid-liquid separation system further comprises a circulation device 4, the circulation device 4 comprises a first pipeline 41 for connecting the suction device 2 and the liquid phase tank 35, and the first pipeline 41 is provided with a first pump 42 and a first valve 43.
The first pipeline 41 is communicated with a liquid outlet of the liquid phase tank 35, the liquid outlet of the liquid phase tank 35 is located at the bottom of the liquid phase tank 35, the first pipeline 41 is communicated with the top of the vacuum tank 21, when the first valve 43 is opened, the first pump 42 is used for pumping the liquid phase substance in the liquid phase tank 35 into the vacuum tank 21, and after the liquid phase substance is pumped into the vacuum tank 21, the liquid phase substance flows from the top to the bottom of the vacuum tank 21 in the vacuum tank 21, so that the cleaning operation of the vacuum tank 21 is realized.
In the solid-liquid separation system in the embodiment, the circulating device 4 is additionally arranged between the liquid phase tank 35 and the vacuum tank 21 of the suction device 2, so that liquid phase substances in the liquid phase tank 35 are pumped into the vacuum tank 21 through the first pump 42, the self-circulation cleaning operation of the vacuum tank 21 is realized, the utilization rate of a water source in the water tank 11 is fully improved, the water source is saved, and the reduction treatment of tank bottom materials is facilitated; and this circulating device 4's simple structure, it is convenient to reform transform, only can realize retrieving the liquid phase material that sieves in the liquid phase jar 35 to vacuum tank 21 through a first pump 42 and a first valve 43 and recycle, effectively reduced the cost.
In addition, as shown in fig. 3, the liquid phase tank 35 is provided with a first level sensor 351 and a second level sensor 352 for detecting the position of the liquid phase substance in the liquid phase tank 35, respectively, the first level sensor 351 being located at the top of the liquid phase tank 35, and the second level sensor 352 being located at the bottom of the liquid phase tank 35; the first pipeline 41 is also provided with a second valve 44 for controlling the outflow of the liquid-phase substance in the liquid-phase tank 35; the first pipe 41 may be connected to a second pipe 45 through a three-way joint provided between the first valve 43 and the first pump 42, and the second pipe 45 may be provided with a third valve 46 for controlling the flow of the liquid-phase substance in the liquid-phase tank 35 into the reserve tank.
The embodiment of the invention also provides a solid-liquid separation method, which comprises the following specific steps:
first, the high-pressure jet device 12 of the cleaning device 1 takes water from the water tank 11 and uses high-pressure water to crush and loosen the materials at the bottom of the tank, thereby generating a large amount of liquid-phase materials and some solid-phase materials which are not dissolved in the liquid-phase materials.
Then, a fourth valve 24 is opened, and tank bottom materials containing liquid-phase materials and solid-phase materials are pumped into the vacuum tank 21 through a boom device 23 by adopting a vacuum pumping technology based on a vacuum pump 22; when the first material level sensor 211 detects that the material in the vacuum tank 21 is higher than the high level, the fifth valve 26 is opened, the second pump 25 is opened, and the material in the vacuum tank 21 is pumped to the solid-liquid screening device 3; when the second level sensor 212 detects that the material in the vacuum tank 21 is lower than the low level, the fifth valve 26 is closed and the second pump 25 stops operating.
Then, the filter device 31 of the solid-liquid sieving device 3 performs solid-liquid separation on the material pumped by the second pump 25, the separated solid-phase substance is directly discharged from a discharge port of the solid-phase substance, and the separated liquid-phase substance flows into a liquid-phase tank 35 arranged below the solid-liquid sieving device 3 under the action of self gravity.
When the first liquid level sensor 351 detects that the material in the liquid phase tank 35 is higher than the high level, the second valve 44 and the third valve 46 are opened, the first valve 43 is closed, the first pump 42 is started, and the material in the liquid phase tank 35 is pumped to the standby tank; when the second level sensor 352 detects that the material in the liquid phase tank 35 is lower than the low level, the second valve 44 and the third valve 46 are closed, and the first pump 42 is turned off.
When the second valve 44 and the first valve 43 are opened and the third valve 46 is closed, the first pump 42 is started, the material in the liquid phase tank 35 is pumped into the vacuum tank 21, and self-cleaning operation of the vacuum tank 35 by using the liquid phase material separated from the solid phase can be realized through multiple cycles.
In the embodiment, the functions of high-pressure cleaning and crushing, vacuum suction and solid-liquid screening are integrated, so that the flexibility of an application site is improved, the tank bottom materials can be sucked and the solid-phase substances can be reduced in the use site, and the transportation cost and the solid-danger treatment cost are greatly reduced; the device not only can realize the field suction and solid-liquid vibration screening work of oil field oil sludge and the like, but also can utilize the separated liquid phase substances to carry out the self-cleaning operation of the circulation of the vacuum tank 21, thereby realizing the reduction treatment of the field solid phase substances (particularly dangerous solids); in the cleaning process, the solid-liquid screening device adopts the driving device to separate solid-phase substances and liquid-phase substances of the materials, so that the effect of screening the materials with strong adhesion such as oilfield sludge is better.
The embodiment of the invention also provides equipment, which is shown by combining fig. 1 and fig. 2, has the solid-liquid separation system as described above, and further comprises a power device 5 for supplying power to the solid-liquid separation system.
Preferably, the plant is a skid, a semi-trailer or a truck.
When the equipment is a truck, the power device 5 provides a vehicle-mounted chassis, and a vehicle-mounted engine is used for providing power for the cleaning device 1, the suction device 2, the solid-liquid screening device 3 and the circulating device 4; when the equipment is skid-mounted equipment or semi-mounted equipment, the power device 5 needs an external power supply.
In the embodiment, the functions of high-pressure cleaning and crushing, vacuum suction and solid-liquid screening are integrated, so that the flexibility of an application site is improved, the tank bottom materials can be sucked and the solid-phase substances can be reduced in the use site, and the transportation cost and the solid-danger treatment cost are greatly reduced; the device not only can realize the field suction and solid-liquid vibration screening work of oil field oil sludge and the like, but also can utilize the separated liquid phase substances to carry out the self-cleaning operation of the circulation of the vacuum tank 21, thereby realizing the reduction treatment of the field solid phase substances (particularly dangerous solids); in the cleaning process, the solid-liquid screening device adopts the driving device to separate solid-phase substances and liquid-phase substances of the materials, so that the effect of screening the materials with strong adhesion such as oilfield sludge is better.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.

Claims (10)

1. A solid-liquid separation system, comprising:
the cleaning device (1), the cleaning device (1) is used for crushing tank bottom materials;
the suction device (2) is used for sucking the crushed tank bottom materials;
the solid-liquid screening device (3) is used for carrying out solid-phase and liquid-phase separation on the crushed tank bottom materials;
the solid-liquid screening device (3) comprises a filtering device (31) and a driving device (32), the driving device (32) is suitable for driving the filtering device (31) to vibrate, and the filtering device (31) is used for receiving materials at the bottom of the crushed tank.
2. The solid-liquid separation system according to claim 1, characterized in that the solid-liquid screening device (3) further comprises a high-pressure spray device (33), the high-pressure spray device (33) being arranged towards the filtering device (31).
3. The solid-liquid separation system according to claim 1, characterized in that the solid-liquid screening device (3) further comprises a vibration excitation device (34), and the vibration excitation device (34) is connected with the filtering device (31).
4. A solid-liquid separation system according to claim 1, characterized in that the solid-liquid screening device (3) further comprises a liquid phase tank (35), the liquid phase tank (35) being provided below the filtering device (31).
5. A solid-liquid separation system according to claim 4, characterized in that the solid-liquid separation system further comprises a circulation device (4), the circulation device (4) comprising a first pipe (41) for connecting the suction device (2) and the liquid phase tank (35), the first pipe (41) being provided with a first pump (42) and a first valve (43).
6. A solid-liquid separation system according to claim 1, characterized in that the washing device (1) comprises a water tank (11) and a high-pressure jet device (12) connected to the water tank (11).
7. The solid-liquid separation system according to claim 1, characterized in that the suction device (2) comprises a vacuum tank (21) for storing the crushed tank bottom material, the vacuum tank (21) being connected with a vacuum pump (22), the vacuum tank (21) achieving suction of the crushed tank bottom material by means of a vacuum made by the vacuum pump (22).
8. The solid-liquid separation system according to claim 7, characterized in that the vacuum tank (21) is further connected with a boom device (23) for conveying the crushed tank bottom material.
9. An apparatus, characterized in that it comprises a solid-liquid separation system according to any one of claims 1 to 8, and further comprises a power unit (5) for powering the solid-liquid separation system.
10. A solid-liquid separation method, characterized by using the solid-liquid separation system according to any one of claims 1 to 8, comprising the steps of:
the cleaning device (1) utilizes water to crush and loosen tank bottom materials to generate crushed tank bottom materials comprising liquid phase materials and solid phase materials;
the suction device (2) sucks the crushed tank bottom materials to a designated position and then flows into the solid-liquid screening device (3) from the designated position, or the suction device (2) directly sucks the crushed tank bottom materials into the solid-liquid screening device (3);
the solid-liquid screening device (3) is used for carrying out solid-liquid separation on the crushed tank bottom material, the separated solid-phase material is discharged from a discharge hole of the solid-phase material, and the separated liquid-phase material flows into a position arranged below the solid-liquid screening device (3).
CN202011352172.7A 2020-11-27 2020-11-27 Solid-liquid separation system, method and equipment with solid-liquid separation system Pending CN112452017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202011352172.7A CN112452017A (en) 2020-11-27 2020-11-27 Solid-liquid separation system, method and equipment with solid-liquid separation system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202011352172.7A CN112452017A (en) 2020-11-27 2020-11-27 Solid-liquid separation system, method and equipment with solid-liquid separation system

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CN112452017A true CN112452017A (en) 2021-03-09

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205117254U (en) * 2015-08-27 2016-03-30 北京华油兴业能源技术有限公司 Mud does not fall to ground integrated well drilling solid controlling system and ultrasonic vibration filter equipment thereof
CN108434831A (en) * 2018-06-04 2018-08-24 刘以年 One kind being used for oil exploitation vibration type filtering device
CN111485836A (en) * 2019-01-27 2020-08-04 中石化石油工程技术服务有限公司 Solid-liquid separation and vibration liquid-removing and drying integrated device
CN211679172U (en) * 2019-10-21 2020-10-16 中石化石油工程技术服务有限公司 Dredging system for drilling mud tank
CN214260836U (en) * 2020-11-27 2021-09-24 湖南三一石油科技有限公司 Solid-liquid separation system and equipment with same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205117254U (en) * 2015-08-27 2016-03-30 北京华油兴业能源技术有限公司 Mud does not fall to ground integrated well drilling solid controlling system and ultrasonic vibration filter equipment thereof
CN108434831A (en) * 2018-06-04 2018-08-24 刘以年 One kind being used for oil exploitation vibration type filtering device
CN111485836A (en) * 2019-01-27 2020-08-04 中石化石油工程技术服务有限公司 Solid-liquid separation and vibration liquid-removing and drying integrated device
CN211679172U (en) * 2019-10-21 2020-10-16 中石化石油工程技术服务有限公司 Dredging system for drilling mud tank
CN214260836U (en) * 2020-11-27 2021-09-24 湖南三一石油科技有限公司 Solid-liquid separation system and equipment with same

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