CN107262269B - Water-wet type oil sand air flotation and water washing separation system and application process thereof - Google Patents
Water-wet type oil sand air flotation and water washing separation system and application process thereof Download PDFInfo
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- CN107262269B CN107262269B CN201610219391.5A CN201610219391A CN107262269B CN 107262269 B CN107262269 B CN 107262269B CN 201610219391 A CN201610219391 A CN 201610219391A CN 107262269 B CN107262269 B CN 107262269B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B9/00—General arrangement of separating plant, e.g. flow sheets
- B03B9/02—General arrangement of separating plant, e.g. flow sheets specially adapted for oil-sand, oil-chalk, oil-shales, ozokerite, bitumen, or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B7/00—Combinations of wet processes or apparatus with other processes or apparatus, e.g. for dressing ores or garbage
Abstract
The invention discloses a water-wet oil sand air flotation washing separation system and an application process thereof, wherein the water-wet oil sand air flotation washing separation system comprises an oil sand crushing device, a belt conveyor, a water-wet oil sand dissociation container, a sand pump, flotation equipment, an air supply device, a switch valve, a pipeline, a scraper conveyor, a funnel and the like; the process applying the water-wet oil sand flotation and washing separation system comprises the steps of preparing a water-wet oil sand slurrying and dissociating agent and a water-wet oil sand flotation agent, sequentially operating the water-wet oil sand flotation and washing separation system, conveying the water-wet oil sand slurrying and dissociating agent to the tank cavity of a water-wet oil sand separation container, pumping the water-wet oil sand flotation agent to a flotation device flotation action container and the like. The method has advanced technology, has outstanding technical advantages of high efficiency, economy and environmental protection, and fully meets the urgent technical requirements of industrial and large-scale exploitation of the oil sand ore.
Description
Technical Field
The invention relates to an oil sand mining technology, in particular to a water-wet oil sand air flotation and water washing separation system and an application process thereof.
Background
Oil sand belongs to unconventional petroleum resources, and only canada internationally has a relatively mature oil sand open-air development water washing treatment technology at present. The oil sand washing technology in China is still in an indoor research stage, and has important strategic significance for effective utilization of energy in China in future. There are three main foreign oil and sand separation techniques: hot water washing, solvent extraction and pyrolysis dry distillation. The separation method of the oil sand is different due to different oil sand structures, and generally, the water-wet oil sand is suitable for a water washing separation method, and the oil-wet oil sand is suitable for an organic solvent extraction separation method or a pyrolysis and dry distillation separation method. The separation of oil sand by thermochemical water washing method and ATP dry distillation method will become the main method for separating oil and sand on the ground in the future, but the chemical water washing method is still the main method at present. The oil and sand separation technology only carries out some indoor researches and indoor tests in China, while the foreign oil sand treatment technology is mature and has been developed to the industrial large-scale exploitation stage, but the core process of the technology is kept secret from China, so that the related key technologies and equipment cannot be mastered by the research and development team of the related oil and sand separation technology in China. The technical bottlenecks faced by the oil and sand separation technology in China are as follows: (1) a single reagent system cannot adapt to the efficient separation of oil sand, and a compound reagent system with the functions of dispersion, dissociation and viscosity reduction needs to be screened. (2) Physical contradiction occurs between the oil sand dispersion process and the oil sand micro-separation process, the slurrying effect and the oil-sand separation are mutually restricted, the oil-sand separation efficiency is difficult to further improve, and the fluctuation of the oil content of the tailings is large, so that the stable operation of the oil-sand separation technology cannot be ensured. (3) The oil sand slurry reaction link is lacked, the separation of bitumen oil and sand is realized only by mechanical stirring and thermochemical natural sedimentation, which is not conducive to further improving the oil and sand separation efficiency and shortening the oil and sand separation time, and the operation of industrial and large-scale oil sand exploitation is difficult to implement.
Oil sand is an important petroleum substitute, can effectively reduce the dependence on traditional petroleum products, and has increasingly received the key attention of domestic and foreign research institutions. The distance between the Xinjiang Fengcheng oil sand mining area and the Clamayi city is 110km, the mining area is located in the Fengcheng oil field, and 2 oil sand blocks are shared, wherein the West area of the Fengcheng is adjacent to the heavy 32 well area, and the east area of the Fengcheng is adjacent to the heavy 37 well area. Wind city oil sand overlapping area 12km2Geological reserve of oil sand oil 5498X 104t. According to the comprehensive evaluation index of reserves, the ore is classified as large oil sand ore with medium burial depth, high abundance, thick layer and medium and high grade conditions. The sand oil reserve of Fengcheng oil for oil extraction is 4198X 104t, wherein the oil sand reserves of the oil extraction sand in the western regions of the Fengchun are 638 multiplied by 104t, the oil-extracting sand oil reserve of the east chalk system of Fengcheng is 2157.8 multiplied by 104t, the sand oil reserve of the Jurassic system in the east of Fengcheng is 1372 × 104t. The popularization and development of the Fengcheng oil placer can improve the resource efficiency, maintain the normal exploration, development and production and management order of the Xinjiang oil and gas field, and simultaneously promote the economic development and social stability of the oil placer.
Disclosure of Invention
The invention aims to provide a water-wet oil sand air flotation washing separation system and an application process thereof, which can effectively solve a series of technical problems of high-efficiency, economic and environment-friendly treatment of oil sand in the oil sand industrialization and large-scale development processes, have advanced technology, have outstanding technical advantages of high efficiency, economy and environment protection, and fully meet the urgent technical requirements of oil sand industrialization and large-scale exploitation.
The purpose of the invention is realized as follows: a water-wet oil sand air flotation washing separation system is characterized in that a discharge port of an oil sand crushing device is in opposite matching with a charging end of a belt conveyor, a fine oil sand inlet communicated with a tank cavity of a water-wet oil sand dissociation container is arranged at the top of the water-wet oil sand dissociation container, a water-wet oil sand slurrying dissociation agent inlet and a hot water inlet are arranged in the water-wet oil sand dissociation container, a slurry oil sand material discharge port communicated with the tank cavity of the water-wet oil sand dissociation container is arranged at a position close to the bottom of the water-wet oil sand dissociation container, the average value of the oil sand grain sizes entering the tank cavity of the water-wet oil sand dissociation container through the fine oil sand inlet is smaller than or equal to 50mm, a discharge end of the belt conveyor is in opposite matching with the fine oil sand inlet of the water-wet oil sand dissociation container, one end of a water-wet oil sand slurrying agent conveying pipeline serially connected with, a pipe orifice at one end of a hot water conveying main pipeline is connected with a hot water inlet of a water wetting type oil sand dissociation container through a hot water conveying first branch pipeline connected with a second switch valve in series, a slurry oil sand material outlet of the water wetting type oil sand dissociation container is connected with a feed inlet of a sand pump through a slurry oil sand material input pipeline connected with a third switch valve in series, a discharge outlet of the sand pump is connected with a raw material inlet of flotation equipment through a slurry oil sand material output pipeline connected with a fourth switch valve in series, an air supply port of an air supply device is connected with an air inlet of the flotation equipment through an air conveying pipeline connected with a fifth switch valve in series, the hot water conveying main pipeline is also connected with a purified water inlet of the flotation equipment through a hot water conveying second branch pipeline connected with a sixth switch valve in series, and a water wetting type oil sand air-floating agent conveying pipeline connected with a seventh switch valve in series is connected, the hydrophobic floating material discharge port of the flotation equipment is connected with the pipe orifice at one end of the hydrophobic floating material conveying pipeline which is connected with the eighth switch valve in series, the hydrophilic suspended material discharge port of the flotation equipment is connected with the pipe orifice at one end of the hydrophilic suspended material conveying pipeline which is connected with the ninth switch valve in series, the sunk material discharge port of the flotation equipment is in opposite matching with the charging end of the scraper conveyor, and the discharging end of the scraper conveyor is in opposite matching with the feeding port of the hopper.
The method comprises the steps of using a process of using a water-wet oil sand flotation water washing separation system to sequentially transfer a mixture of a water-wet oil sand slurrying dissociation agent and a water-wet oil sand flotation agent into a slurry-type oil-sand slurry separation device through a gravity-open water transfer chute, wherein the slurry-type oil sand flotation water separation device is opened from a slurry-type oil flotation tank, the slurry-type oil flotation water transfer device is opened from a slurry-type oil flotation water transfer hopper, the slurry-type oil flotation water transfer device is opened from a slurry-oil flotation tank, the slurry-oil sand slurry separation device is opened from a slurry-oil sand slurry-oil-slurry-transfer hopper, the slurry-oil-sand slurry-oil-slurry-transfer device is opened from a slurry-oil-slurry-oil-transfer device, the slurry-oil-transfer device is opened from a slurry-water transfer device, the slurry-transfer device is opened from a slurry-transfer device, the slurry-transfer device, the slurry-transfer device is opened from a slurry-oil-slurry-transfer device, the slurry-a slurry-a slurry-transfer device, the slurry-transfer device, the slurry-transfer device, the slurry-transfer device, the slurry-transfer device, the slurry-slurry.
In summary, the water-wet oil sand air flotation and water washing separation system comprises an oil sand crushing device, a belt conveyor, a water-wet oil sand dissociation container, a sand pump, flotation equipment, an air supply device, a switch valve, a pipeline, a scraper conveyor, a funnel and the like; the process for applying the water-wet oil sand flotation and washing separation system comprises the steps of preparing the water-wet oil sand slurrying and dissociating agent and the water-wet oil sand flotation agent, sequentially operating the water-wet oil sand flotation and washing separation system, conveying the water-wet oil sand slurrying and dissociating agent to the tank cavity of the water-wet oil sand dissociation container, pumping the water-wet oil sand flotation agent to the flotation device air flotation acting container and the like.
Practice proves that the method can effectively solve a series of technical problems of high-efficiency, economic and environment-friendly treatment of the oil sand in the industrialized and large-scale development processes of the water-wet oil sand mine, has advanced technology, has outstanding technical advantages of high efficiency, economy and environmental protection, and fully meets the urgent technical requirements of industrialized and large-scale exploitation of the oil sand mine.
Drawings
The invention will be further explained with reference to the drawings.
Fig. 1 is a schematic view of the overall structure of the present invention.
Detailed Description
A water-wet type oil sand air flotation and water washing separation system is disclosed, as shown in figure 1, a discharge port of an oil sand crushing device 17 is in opposite matching with a charging end of a belt conveyor 18, a fine oil sand inlet communicated with a tank cavity of a water-wet type oil sand dissociation container 13 is arranged at the top of the water-wet type oil sand dissociation container 13, a water-wet type oil sand slurrying dissociating agent inlet and a hot water inlet are arranged, a slurry oil sand material discharge port communicated with the tank cavity of the water-wet type oil sand dissociation container 13 is arranged at the position close to the bottom of the water-wet type oil sand dissociation container 13, the average value of the particle sizes of the oil sand entering the tank cavity of the water-wet type oil sand dissociation container 13 through the fine oil sand inlet is less than or equal to 50mm, a discharge end of the belt conveyor 18 is in opposite matching with the fine oil sand inlet of the water-wet type oil sand dissociation container 13, an orifice at one end of a water, a pipe orifice at one end of a hot water conveying main pipeline 2 is connected with a hot water inlet of a water-wet type oil sand dissociation container 13 through a hot water conveying first branch pipeline 4 connected with a second switch valve 15 in series, a slurry oil sand material outlet of the water-wet type oil sand dissociation container 13 is connected with a feed inlet of a sand pump 21 through a slurry oil sand material input pipeline 19 connected with a third switch valve 20 in series, a discharge outlet of the sand pump 21 is connected with a raw material inlet of the flotation equipment 8 through a slurry oil sand material output pipeline 16 connected with a fourth switch valve 22 in series, an air supply port of an air supply device 25 is connected with an air inlet of the flotation equipment 8 through an air conveying pipeline 26 connected with a fifth switch valve 27 in series, the hot water conveying main pipeline 2 is also connected with a clean water inlet of the flotation equipment 8 through a hot water conveying second branch pipeline 7 connected with a sixth switch valve 6 in series, and a water-wet type oil sand air flotation agent conveying pipeline 1 connected with a seventh switch valve 5 in series, the outlet of the hydrophobic floating material of the flotation device 8 is connected with the pipe orifice at one end of the hydrophobic floating material conveying pipeline 9 which is connected with the eighth switch valve 10 in series, the outlet of the hydrophilic floating material of the flotation device 8 is connected with the pipe orifice at one end of the hydrophilic floating material conveying pipeline 12 which is connected with the ninth switch valve 11 in series, the outlet of the sinking material of the flotation device 8 is correspondingly matched with the charging end of the scraper conveyor 23, and the discharging end of the scraper conveyor 23 is correspondingly matched with the feeding port of the hopper 24.
When the ratio of the water content of the oil sand slurry separation/flotation water-slurry separation/flotation device to the oil sand slurry separation/flotation water-slurry separation/flotation device is between the oil sand slurry separation/flotation device and the oil sand slurry separation/flotation device, the ratio of the water content of the oil sand slurry separation/flotation water-slurry separation/flotation oil slurry separation/flotation device and the oil sand slurry separation/flotation device is between the oil sand slurry separation/flotation water-slurry separation/flotation device and the oil sand slurry separation/flotation device, the ratio of the water content of the oil sand slurry separation/flotation water-slurry separation/flotation oil slurry separation/flotation device is between the oil sand slurry separation/flotation water-slurry separation/flotation device and the oil sand slurry separation/flotation device, the ratio of the oil sand slurry separation/flotation water-slurry separation/flotation device and the oil slurry separation/flotation water-slurry separation/flotation device is between the oil slurry separation/flotation water-slurry.
According to the component properties of oil sand of certain oil sand ore (the percentage mass content of bitumen is 12.8%, the percentage mass content of minerals such as sand and clay is 83.8%, the percentage mass content of water is 3.4%, and the percentage mass content of oil sand with the particle size of more than 5cm in the oil sand ore is more than 90%), the oil sand belongs to the water-wet type oil sand. Therefore, the water-wet oil sand slurrying dissociating agent formula corresponding to the properties of the water-wet oil sand component is as follows: selecting the coking diesel oil as mineral oil, setting the mass ratio of Oep-70 to Aep-98 in a penetrant to be 1: 12, setting the mass ratio of Span-80 to Tween-80 in an asphalt emulsifier to be 1: 10, selecting sodium silicate as a pH regulator, selecting dodecyl dimethyl benzyl ammonium chloride as a stripping agent, setting the mass percentage of the penetrant in an A-type mixture to be 0.020%, the mass percentage of the asphalt emulsifier in a B-type mixture to be 0.3%, the mass percentage of the stripping agent in the B-type mixture to be 0.008%, and the mass percentage of the pH regulator in the B-type mixture to be 0.3%. The wet oil sand slurrying dissociator formula corresponding to the property of the wet oil sand component with the sand grain size less than or equal to 5mm can ensure that the slurried oil sand has the grain size less than 2.5 mm. Therefore, the slurrying and dissociating agent for the water-wet oil sand is generally prepared by compounding a surfactant (surfactant), alkali, a solubilizer and the like, but the formula of the slurrying and dissociating agent for the water-wet oil sand with different physicochemical properties is correspondingly different. The formula of the water-wet oil sand air-floating agent corresponding to the component properties of the water-wet oil sand comprises the following components: the preferred mass percentage content of the asphalt emulsifier in the asphalt emulsion composed of the asphalt emulsifier and the methanol is 50%, namely the preferred ratio of the mass of the asphalt emulsifier to the total mass of the asphalt emulsifier and the methanol is 0.5. The mass percentage of the water purifying agent in the water purifying liquid consisting of the water purifying agent and water is 40 percent, namely the preferred ratio of the mass of the water purifying agent to the total mass of the water purifying agent and the water is 0.4. The preferred mass percentage of the asphalt emulsifier in the mass of the water-wet oil sand air-floating agent is 6 percent. The preferred mass percentage content of the foaming agent in the mass of the water-wet oil sand air-floating agent is 4 percent; when the water-wet oil sand air flotation agent is applied, the water-wet oil sand air flotation agent and hot water with the temperature of more than or equal to 40 ℃ are prepared into water washing air flotation liquid with the temperature of 80 ℃, and the mass-volume concentration of the water-wet oil sand air flotation agent in the water washing air flotation liquid is 80 mg/L. Proved by verification, the formula of the water-wet oil sand air-floating agent corresponding to the component property of the water-wet oil sand with the sand grain size of less than or equal to 5mm shows good auxiliary oil removal effect, can completely improve the separation speed of the existing oil and sand by more than 2 times, and can improve the oil removal rate of the existing oil sand by nearly 10 percent to reach 94.8 percent.
The preferred mass percentage content of the asphalt emulsifier in the asphalt emulsion composed of the asphalt emulsifier and the methanol is 50%, namely the preferred ratio of the mass of the asphalt emulsifier to the total mass of the asphalt emulsifier and the methanol is 0.5. The preferred mass percentage content of the water purifying agent in the water purifying liquid consisting of the water purifying agent and water is 40 percent, namely the preferred ratio of the mass of the water purifying agent to the total mass of the water purifying agent and the water is 0.4. The preferred mass percentage of the asphalt emulsifier in the mass of the water-wet oil sand air-floating agent is 6 percent. The preferred mass percentage of the foaming agent in the mass of the water-wet oil sand air-floating agent is 4 percent.
Selecting a group of relevant process parameters related to the wet oil sand slurrying and dissociating agent: the mass percentage of the type A mixture in the water-wet type oil sand slurrying and dissociating agent is 5 percent, namely the preferred ratio of the mass of the type A mixture to the mass of the water-wet type oil sand slurrying and dissociating agent is 0.05, and the mass percentage of the type B mixture in the water-wet type oil sand slurrying and dissociating agent is 95 percent, namely the preferred ratio of the mass of the type B mixture to the mass of the water-wet type oil sand slurrying and dissociating agent is 0.95. Preferably, the slurrying and separating liquid and all the fine oil sand grains conveyed to the tank cavity of the water-wet oil sand grain dissociation container 13 are contacted with each other in a uniformly mixed state for 34-36 min, the temperature of the slurrying and separating agent formed by uniformly mixing the water-wet oil sand slurrying and separating agent and hot water in the tank cavity of the water-wet oil sand grain dissociation container 13 is kept to be higher than or equal to 50 ℃, and the ratio of the mass of the hot water contained in the slurrying and separating liquid to the total mass of all the fine oil sand grains conveyed to the tank cavity of the water-wet oil sand grain dissociation container 13 is preferably kept to be 1. According to verification, after the relevant process parameters of the group of water-wet oil sand slurrying and dissociating agents are selected, when the slurrying and dissociating liquid and the finer oil sand grains are contacted with each other in a uniformly mixed state in a tank cavity of a water-wet oil sand grain dissociation container 13 for 34-36 min, the grain size of the finer oil sand grains after dissociation is smaller than or equal to 2.5 mm.
Selecting a group of relevant process parameters related to the water-wet oil sand air-floating agent: preferentially keeping the temperature of a water-washed air flotation solution formed by uniformly mixing a water-wet oil sand air flotation agent and hot water in an air flotation action container of the flotation equipment 8 to be more than or equal to 80 ℃, and preferentially keeping the ratio of the mass of the hot water contained in the water-washed air flotation solution to the total mass of all slurry oil sand mold materials pumped into the air flotation action container of the flotation equipment 8 to be 50; preferentially keeping the ratio of the mass of the water-wet oil sand air floating agent to the mass of the water-washing air floating liquid to be 0.01, namely the mass percentage concentration of the water-wet oil sand air floating agent in the water-washing air floating liquid to be 1 percent; the rising height of the rising bubbles in the water-washing gas-floating liquid contained in the air-floating action container (air-floating column) is preferably kept to be 5 m. According to verification, after the relevant process parameters of the water-wet oil sand air floating agent are selected, the oil removal rate of the oil sand is more than 91%, and the separation time of the finer oil sand is shortened to 5 min.
Because the oil sand ore has the characteristics of rock, the oil sand ore has certain strength and also has the physical characteristic of crude oil viscosity. After a large number of field tests, the oil sand and sand crushing device is provided with a self-adaptive adjustable scraper control system, and adopts a two-stage crushing process technology, namely, the first stage adopts the existing crushing device (such as the existing MMD crusher developed by MMD mining machinery group company in England) for carrying out a coarse crushing process, and the second stage adopts the existing crushing device (such as the existing 4PG series four-tooth roller crusher sold in the market) for crushing by adopting a fine crushing process.
Because the physical contradiction between the oil sand dispersion process and the oil sand micro-separation process occurs relatively, and the slurrying and the oil-sand separation are mutually restricted, the problem of improving the oil-sand separation efficiency is difficult to be thoroughly solved. According to the characteristics of oil sand wettability and oil sand oil in Chinese continent (oil field in Fengcheng of Xinjiang) and abroad, the water-wet oil sand and sand dissociation container 13 adopts an oil sand wetting slurry reaction technology. A large number of experiments and tests prove that the water-wet oil sand slurrying dissociation agent applied to the oil sand wetting slurrying reaction technology can effectively enable finer oil sand grains to rapidly collapse and dissociate into grains with the grain diameter smaller than 5mm, so that the essential conditions of a subsequent oil sand air flotation water-washing separation technology are met.
The flotation equipment 8 adopts an oil sand flotation washing separation technology, and the oil sand flotation washing separation technology utilizes a water-wet oil sand flotation agent to enable finer oil sand grains soaked in water-washing air-floating liquid formed by uniformly mixing the water-wet oil sand flotation agent and hot water in an air-floating action container of the flotation equipment 8 to be quickly separated into floating asphalt oil, suspended alkali mud type materials and sinking high-moisture-content deoiling tailings (clean sand) through an air-floating separation principle while being washed by water. A large number of experiments and tests prove that the water-wet oil sand air-floating agent applied to the oil sand air-floating separation and water-washing separation technology can effectively enable the oil content of the high-water-content deoiling tailings (cleaned sand) at the bottom to be lower than 1.05 percent, and the oil content of the oil sand to be more than or equal to 91 percent. The conventional traditional oil sand stirring and washing process needs 14 min to 16min to separate oil from sand, but compared with the conventional traditional oil sand stirring and washing process, the oil sand air flotation and washing separation technology shortens the oil and sand separation time to 5min to 8 min.
Claims (10)
1. The utility model provides a moist type oil sand air flotation washing piece-rate system which characterized in that: the discharge port of the oil sand grain crushing device (17) is in opposite matching with the charging end of the belt conveyor (18), the top of the water-wet oil sand grain dissociation container (13) is provided with a finer oil sand grain inlet communicated with a tank cavity of the water-wet oil sand grain dissociation container, a water-wet oil sand slurrying dissociating agent inlet and a hot water inlet, the position of the water-wet oil sand grain dissociation container (13) close to the bottom of the water-wet oil sand grain dissociation container is provided with a slurry oil sand material discharge port communicated with the tank cavity of the water-wet oil sand grain dissociation container, the average value of the particle sizes of the oil sand grains entering the tank cavity of the water-wet oil sand grain dissociation container (13) through the finer oil sand grain inlet is less than or equal to 50mm, the discharge end of the belt conveyor (18) is in opposite matching with the finer oil sand grain inlet of the water-wet oil sand dissociation container (13), and one end pipe orifice of the water-wet oil sand dissociating agent conveying pipeline (3) serially connected, a pipe orifice at one end of a hot water conveying main pipeline (2) is connected with a hot water inlet of a water-wet type oil sand dissociation container (13) through a hot water conveying first branch pipeline (4) connected with a second switch valve (15) in series, a slurry oil sand material outlet of the water-wet type oil sand dissociation container (13) is connected with a feed inlet of a sand pump (21) through a slurry oil sand material input pipeline (19) connected with a third switch valve (20) in series, a discharge outlet of the sand pump (21) is connected with a raw material inlet of a flotation device (8) through a slurry oil sand material output pipeline (16) connected with a fourth switch valve (22) in series, an air supply port of an air supply device (25) is connected with an air inlet of the flotation device (8) through an air conveying pipeline (26) connected with a fifth switch valve (27) in series, the hot water conveying main pipeline (2) is also connected with a flotation device (8) through a hot water conveying second branch pipeline (7) connected with a sixth switch, the water-wet oil sand air-floating agent conveying pipeline (1) connected with the seventh switch valve (5) in series is connected with a water-wet oil sand air-floating agent inlet of a flotation device (8), a hydrophobic floating material outlet of the flotation device (8) is connected with a pipe orifice at one end of a hydrophobic floating material conveying pipeline (9) connected with the eighth switch valve (10) in series, a hydrophilic suspended material outlet of the flotation device (8) is connected with a pipe orifice at one end of a hydrophilic suspended material conveying pipeline (12) connected with the ninth switch valve (11) in series, a sinking material outlet of the flotation device (8) is in opposite-position fit with a charging end of a scraper conveyor (23), and a discharging end of the scraper conveyor (23) is in opposite-position fit with a feeding hole of a hopper (24).
2. The process is characterized in that ① is used for preparing a water-wet oil sand slurry dissociation agent and a water-wet oil sand slurry dissociation agent, the water-wet oil sand slurry dissociation agent is used for being transferred from a water-float oil slurry container (oil sand slurry container) to a slurry oil slurry container (oil sand slurry container) through a water-float oil transfer chute (oil sand slurry container), a water-slurry oil-slurry separation agent is used for being transferred from a water-float oil slurry container (oil sand slurry container) to a slurry oil slurry separation tank (oil sand slurry container), a water-float oil slurry separation tank (oil sand slurry container) is used for being transferred from a water-float oil slurry container (oil slurry container) to a slurry oil slurry container (oil sand slurry container) through a water transfer chute (oil slurry) and a water slurry oil slurry transfer chute (oil slurry) and a slurry oil slurry separation tank (oil slurry container), a water slurry oil slurry separation tank (oil slurry transfer chute) and a water transfer chute (oil slurry separation tank (slurry oil slurry) 2) and a slurry oil slurry separation tank, a water transfer chute (oil slurry transfer chute) is used for being transferred from a slurry oil slurry container, a slurry oil slurry container (oil slurry container, a slurry oil slurry separation tank, a slurry oil slurry transfer device, a slurry oil slurry transfer device, a slurry oil transfer device, a slurry oil transfer device, a slurry oil transfer device, a slurry oil transfer device, a slurry oil.
3. The process for applying the water-wet oil sand air flotation and water washing separation system as claimed in claim 2, which is characterized in that: the mass percentage of the A-type mixture in the wet oil sand slurrying and dissociating agent is 5%, and the mass percentage of the B-type mixture in the wet oil sand slurrying and dissociating agent is 95%.
4. The process for applying the water-wet oil sand air flotation and water washing separation system as claimed in claim 2, which is characterized in that: the pulp dissociation liquid and all the fine oil sand grains conveyed to the water-wet oil sand grain dissociation container (13) are preferentially kept to be contacted with each other in a uniformly mixed state for 34-36 min.
5. The process for applying the water-wet oil sand air flotation and water washing separation system as claimed in claim 2, which is characterized in that: the temperature of slurried dissociation liquid formed by mixing the water-wet oil sand slurrying dissociation agent and hot water in a tank cavity of a water-wet oil sand dissociation container (13) is preferably kept to be more than or equal to 50 ℃.
6. The process for applying the water-wet oil sand air flotation and water washing separation system as claimed in claim 2, which is characterized in that: the ratio of the mass of hot water contained in the slurried dissociation liquid to the total mass of the sum of all the finer oil sand particles transported to the tank chamber of the water-wet oil sand particle dissociation vessel (13) itself is preferably maintained at 1.
7. The process for applying the water-wet oil sand air flotation and water washing separation system as claimed in claim 2, which is characterized in that: the temperature of the water-washed air-float solution formed by uniformly mixing the water-wetted oil sand air-float agent and hot water in an air-float action container of the flotation equipment (8) is preferably kept to be more than or equal to 80 ℃.
8. The process for applying the water-wet oil sand air flotation and water washing separation system as claimed in claim 2, which is characterized in that: the ratio of the mass of hot water contained in the aqueous scrubbing flotation solution to the sum of the total mass of all slurry oil sand mould material pumped into the flotation vessel of the flotation plant (8) is preferably maintained at 50.
9. The process for applying the water-wet oil sand air flotation and water washing separation system as claimed in claim 2, which is characterized in that: the ratio of the mass of the water-wet oil sand air-floating agent to the mass of the water-washed air-floating solution is preferably kept to be 0.01.
10. The process for applying the water-wet oil sand air flotation and water washing separation system as claimed in claim 2, which is characterized in that: the rising height of the rising bubbles in the water-washing gas-floating liquid contained in the air-floating action container is preferably kept to be 5 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610219391.5A CN107262269B (en) | 2016-04-08 | 2016-04-08 | Water-wet type oil sand air flotation and water washing separation system and application process thereof |
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| CN1583958A (en) * | 2004-05-30 | 2005-02-23 | 唐景维 | Continuous oil sand separating method and apparatus |
| CN100381539C (en) * | 2005-12-14 | 2008-04-16 | 南京大学 | Method for extracting asphalt from oil sand and its use |
| US20080121567A1 (en) * | 2006-11-29 | 2008-05-29 | Lin David W | Process for selective recovery of bitumen from oil sands slurries by column flotation |
| WO2009114934A1 (en) * | 2008-03-17 | 2009-09-24 | Shell Canada Energy, A General Partnership Formed Under The Laws Of The Province Of Alberta | Recovery of bitumen from oil sands using sonication |
| US9884997B2 (en) * | 2011-09-30 | 2018-02-06 | Mcw Energy Group Limited | Oil from oil sands extraction process |
| CN104342187A (en) * | 2013-08-09 | 2015-02-11 | 国润金华（北京）国际能源投资有限公司 | Method for separating oil sand by water washing method |
| CN104342186A (en) * | 2013-08-09 | 2015-02-11 | 国润金华（北京）国际能源投资有限公司 | Water washing separation method and water washing separation system for oil sand |
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