Oil sand dry distillation and thermoelectricity integrated system
By integrating oil sands pretreatment, dry distillation, and cogeneration systems, the problems of high energy consumption and environmental pollution in oil sands mining have been solved, achieving efficient and clean utilization of oil sands resources and recovery of thermal energy, thereby reducing production costs and carbon emissions.
Patent Information
- Application Number
- CN202520135301.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-21
- Publication Date
- 2026-02-03
- Estimated Expiration
- 2035-01-21
AI Technical Summary
Traditional oil sands mining and processing methods are energy-intensive and cause significant environmental pollution, and the heat energy is not effectively recovered and utilized during the oil sands dry distillation process.
Design an integrated system for oil sands dry distillation and cogeneration, which integrates oil sands pretreatment, dry distillation, cogeneration, and waste gas treatment. The system recovers heat energy from the dry distillation process through a heat recovery device to generate electricity, and integrates the system with a control system for unified regulation.
It enables the efficient and clean utilization of oil sands resources, reduces energy consumption and environmental pollution, lowers crude oil production costs, and reduces carbon emissions.
Smart Images
Figure CN223866572U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of oil sand dry distillation technology, specifically relating to an integrated system of oil sand dry distillation and thermoelectricity. Background Technology
[0002] Oil sands, as an important unconventional petroleum resource, play a crucial role in alleviating oil shortages. However, traditional oil sands extraction and processing methods suffer from high energy consumption and significant environmental pollution. In particular, the oil sands carbonization process consumes a large amount of heat energy, which is often not effectively recovered and utilized. Furthermore, the waste gases and residues generated during oil sands processing also cause severe environmental pollution. Utility Model Content
[0003] The technical problem to be solved by this utility model is to provide an integrated oil sands dry distillation and cogeneration system to address the shortcomings of the prior art. This system integrates oil sands dry distillation and cogeneration functions to achieve efficient and clean utilization of oil sands resources, while reducing energy consumption and environmental pollution.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is: an integrated oil sands dry distillation and cogeneration system, characterized in that it includes an oil sands pretreatment system, an oil sands dry distillation system, a cogeneration system, a waste gas treatment system, and a control system; the oil sands pretreatment system is used to provide pretreated oil sands to the oil sands dry distillation system; the oil sands dry distillation system is used to dry distill the oil sands, with the dry distillation temperature controlled at 305℃-700℃; the cogeneration system is used to recover and utilize the heat energy generated during the dry distillation process for power generation; the waste gas treatment system is used to treat the flue gas discharged from the oil sands dry distillation system and the cogeneration system; the oil sands pretreatment system, the oil sands dry distillation system, the cogeneration system, and the waste gas treatment system are integrated and controlled by the control system.
[0005] Preferably, the oil sands pretreatment system includes a raw material supply and storage device, a crushing and screening device, a drying device, and an impurity removal device. The raw material supply and storage device includes a storage silo, a feeder, and a conveyor belt. The storage silo is used to store oil sands. The feeder and conveyor belt are used to transport the oil sands from the storage silo to the crushing and screening device. The crushing and screening device includes a crusher and a vibrating screen. The crusher is used to crush the oil sands, and the crushed oil sands have a particle size of less than 5 mm. The vibrating screen is used to screen the crushed oil sands. The drying device includes a drum dryer, or alternatively, a scraper dryer or a fluidized bed dryer. The drum dryer is used to remove moisture from the crushed oil sands. The impurity removal device includes a vibrating cleaning screen, which is used to remove impurities such as stones and soil from the dried oil sands to prevent damage to the distillation equipment and products.
[0006] Preferably, the oil sands dry distillation system includes a dry distillation furnace, a cooling separator, and a heat recovery device. The dry distillation furnace can be a horizontal rotary dry distillation furnace or a gyratory dry distillation furnace. The cooling separator is used to cool and separate the oil and gas generated during the dry distillation process to obtain pure asphalt or heavy petroleum products. The heat recovery device includes a heat exchanger and a waste heat boiler. The heat exchanger is used to recover the heat energy generated during the dry distillation process. During the dry distillation process, the oil sands are heated and release a large amount of heat energy, which exists in the form of high-temperature flue gas, hot oil, or hot gas. The flue gas outlet temperature of the dry distillation furnace is about 800°C, and the flue gas emission is about 50,000 m3 / h, which can meet the production of 16t / h, 2.5Mpa, 400°C steam by a single waste heat boiler. The heat recovery device recovers the heat energy by exchanging heat between these high-temperature media and the cooling media.
[0007] The waste heat boiler is used to recover the heat energy from the high-temperature flue gas discharged from the dry distillation furnace to produce steam or hot water. The waste heat boiler discharges low-temperature flue gas through the flue pipe. The heat recovery device is used to provide heat energy to the cogeneration system. The steam or hot water is transported to the cogeneration system for power generation.
[0008] Preferably, the combined heat and power system is used to recover and utilize the heat energy generated during the dry distillation process for power generation, including a steam turbine, a generator, a condenser, and a feedwater pump. The hot steam produced by the waste heat boiler is transported to the steam turbine, and the capacity of the waste heat boiler is 20t / h. The steam turbine drives the generator to generate electricity, and the generated electricity supplies the electrical equipment in the plant area. The power of the steam turbine is 3MW, and the power of the generator is 3MW. The low-temperature steam discharged from the steam turbine is condensed into circulating water by the condenser, and the circulating water and makeup water are transported to the waste heat boiler by the feedwater pump.
[0009] Preferably, the waste gas treatment system includes an electrostatic precipitator. The inlet end of the electrostatic precipitator is connected to the flue gas pipe of the waste heat boiler, and the outlet end of the electrostatic precipitator is connected to a spray cooling box and a secondary combustion chamber. The spray cooling box is connected to a light oil storage tank. Part of the flue gas is cooled by the spray cooling box, which cools the steam and a small amount of light oil. The steam is cooled into liquid water for recycling, and the light oil is cooled into light oil for storage in the oil tank.
[0010] The secondary combustion chamber is connected to an SNCR denitrifier, the SNCR denitrifier is connected to a flue gas heating box, the flue gas heating box is connected to a scrubbing and purification box, the scrubbing and purification box is connected to a chimney via a fan, and activated carbon and molecular sieves are installed inside the scrubbing and purification box.
[0011] Another portion of the flue gas enters the secondary combustion chamber, where it is combined with self-produced light oil, non-condensable gas, flue gas recirculation, and an appropriate amount of air to assist combustion. After being denitrified by an SNCR denitrifier, the flue gas enters the flue gas heating box to heat the flue gas. After heat exchange, the flue gas undergoes alkaline desulfurization in the flue gas scrubbing and purification box. In the flue gas scrubbing and purification box, the flue gas is adsorbed and purified by molecular sieves and activated carbon, and finally discharged into the chimney by a fan.
[0012] This utility model has the following advantages compared with the prior art:
[0013] This invention incorporates a heat recovery device in an oil sands retorting system. This device recovers the heat energy generated during the oil sands retorting process, which is then used to generate electricity through a combined heat and power (CHP) system. This achieves efficient and clean utilization of oil sands resources, while simultaneously reducing crude oil production costs and carbon emissions. The invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the device connection of this utility model.
[0015] Explanation of reference numerals in the attached figures:
[0016] 1—Oil sands pretreatment system; 2—Oil sands dry distillation system; 3—Cogeneration system; 4—Waste gas treatment system; 5—Control system. Detailed Implementation
[0017] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0018] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0019] like Figure 1As shown, this utility model provides an integrated oil sands dry distillation and cogeneration system, including an oil sands pretreatment system 1, an oil sands dry distillation system 2, a cogeneration system 3, a waste gas treatment system 4, and a control system 5. The oil sands pretreatment system 1 is used to provide pretreated oil sands to the oil sands dry distillation system 2. The oil sands dry distillation system 2 is used to dry distill the oil sands, with the dry distillation temperature controlled between 305℃ and 700℃. The cogeneration system 3 is used to recover and utilize the heat energy generated during the dry distillation process for power generation. The waste gas treatment system 4 is used to treat the flue gas discharged from the oil sands dry distillation system 2 and the cogeneration system 3. The oil sands pretreatment system 1, the oil sands dry distillation system 2, the cogeneration system 3, and the waste gas treatment system 4 are integrated and controlled by the control system 5.
[0020] In this embodiment, the oil sands pretreatment system 1 includes a raw material supply and storage device, a crushing and screening device, a drying device, and an impurity removal device. The raw material supply and storage device includes a storage silo, a feeder, and a conveyor belt. The storage silo is used to store oil sands. The feeder and conveyor belt are used to transport the oil sands in the storage silo to the crushing and screening device. The crushing and screening device includes a crusher and a vibrating screen. The crusher is used to crush the oil sands, and the crushed oil sands have a particle size of less than 5 mm. The vibrating screen is used to screen the crushed oil sands. The drying device includes a drum dryer, or alternatively, a scraper dryer or a fluidized bed dryer. The drum dryer is used to remove moisture from the crushed oil sands. The impurity removal device includes a vibrating cleaning screen, which is used to remove impurities such as stones and soil from the dried oil sands to prevent damage to the distillation equipment and products.
[0021] In this embodiment, the oil sands dry distillation system 2 includes a dry distillation furnace, a cooling separator, and a heat recovery device. The dry distillation furnace can be a horizontal rotary dry distillation furnace or a swirl dry distillation furnace. The cooling separator is used to cool and separate the oil and gas generated during the dry distillation process to obtain pure asphalt or heavy petroleum products. The heat recovery device includes a heat exchanger and a waste heat boiler. The heat exchanger is used to recover the heat energy generated during the dry distillation process. During the dry distillation process, the oil sands are heated and release a large amount of heat energy, which exists in the form of high-temperature flue gas, hot oil, or hot gas. The flue gas outlet temperature of the dry distillation furnace is about 800°C, and the flue gas emission is about 50,000 m3 / h, which can meet the production of 16t / h, 2.5Mpa, 400°C steam by a single waste heat boiler. The heat recovery device recovers the heat energy by exchanging these high-temperature media with a cooling medium.
[0022] The waste heat boiler is used to recover the heat energy from the high-temperature flue gas discharged from the dry distillation furnace to produce steam or hot water. The waste heat boiler discharges low-temperature flue gas through the flue pipe. The heat recovery device is used to provide heat energy to the cogeneration system 3. The steam or hot water is transported to the cogeneration system 3 for power generation.
[0023] In this embodiment, the combined heat and power system 3 is used to recover and utilize the heat energy generated during the dry distillation process for power generation. It includes a steam turbine, a generator, a condenser, and a feedwater pump. The hot steam produced by the waste heat boiler is transported to the steam turbine. The capacity of the waste heat boiler is 20t / h. The steam turbine drives the generator to generate electricity. The power of the steam turbine is 3MW, and the power of the generator is 3MW. The low-temperature steam discharged from the steam turbine is condensed into circulating water by the condenser. The circulating water and makeup water are transported to the waste heat boiler by the feedwater pump.
[0024] In this embodiment, the waste gas treatment system 4 includes an electrostatic precipitator. The inlet end of the electrostatic precipitator is connected to the flue gas pipe of the waste heat boiler, and the outlet end of the electrostatic precipitator is connected to a spray cooling box and a secondary combustion chamber. The spray cooling box is connected to a light oil storage tank. Part of the flue gas is cooled by the spray cooling box, which cools the steam and a small amount of light oil gas. The steam is cooled into liquid water for recycling, and the light oil gas is cooled into light oil for storage in the oil tank.
[0025] The secondary combustion chamber is connected to an SNCR denitrifier, the SNCR denitrifier is connected to a flue gas heating box, the flue gas heating box is connected to a scrubbing and purification box, the scrubbing and purification box is connected to a chimney via a fan, and activated carbon and molecular sieves are installed inside the scrubbing and purification box.
[0026] Another portion of the flue gas enters the secondary combustion chamber, where it is combined with self-produced light oil, non-condensable gas, flue gas recirculation, and an appropriate amount of air to assist combustion. After being denitrified by an SNCR denitrifier, the flue gas enters the flue gas heating box to heat the flue gas. After heat exchange, the flue gas undergoes alkaline desulfurization in the flue gas scrubbing and purification box. In the flue gas scrubbing and purification box, the flue gas is adsorbed and purified by molecular sieves and activated carbon, and finally discharged into the chimney by a fan.
[0027] The above description is merely a preferred embodiment of this utility model and does not constitute any limitation on this utility model. Any simple modifications, alterations, and equivalent changes made to the above embodiments based on the technical essence of this utility model shall still fall within the protection scope of this utility model.
Claims
1. An integrated system for oil sands dry distillation and thermoelectricity, characterized in that, It includes an oil sands pretreatment system (1), an oil sands dry distillation system (2), a cogeneration system (3), a waste gas treatment system (4), and a control system (5); The oil sands pretreatment system (1) is used to provide pretreated oil sands to the oil sands dry distillation system (2); The oil sands dry distillation system (2) is used to dry distill oil sands to produce asphalt or heavy petroleum products. The combined heat and power system (3) is used to recover and utilize the heat energy generated during the dry distillation process for power generation; The exhaust gas treatment system (4) is used to treat the flue gas discharged from the oil sands dry distillation system (2) and the cogeneration system (3); The oil sand pretreatment system (1), oil sand dry distillation system (2), cogeneration system (3), and waste gas treatment system (4) are integrated and regulated by the control system (5).
2. The integrated oil sands dry distillation and thermoelectric system according to claim 1, characterized in that, The oil sands pretreatment system (1) includes a raw material supply and storage device, a crushing and screening device, a drying device, and a cleaning device. The raw material supply and storage device includes a storage silo, a feeder, and a conveyor belt. The storage silo is used to store oil sands. The feeder and conveyor belt are used to transport the oil sands in the storage silo to the crushing and screening device. The crushing and screening device includes a crusher and a vibrating screen. The crusher is used to crush the oil sands. The vibrating screen is used to screen the crushed oil sands. The drying device includes a drum dryer. The drum dryer is used to remove moisture from the crushed oil sands. The cleaning device includes a vibrating cleaning screen. The vibrating cleaning screen is used to remove impurities from the dried oil sands.
3. The integrated oil sands dry distillation and thermoelectric system according to claim 2, characterized in that, The oil sands dry distillation system (2) includes a dry distillation furnace, a cooling separator and a heat recovery device. The cooling separator is used to cool and separate the oil and gas generated during the dry distillation process to obtain asphalt or heavy petroleum products. The heat recovery device includes a heat exchanger and a waste heat boiler. The heat exchanger is used to recover the heat energy generated during the dry distillation process. The waste heat boiler is used to recover the heat energy in the high-temperature flue gas discharged from the dry distillation furnace. The waste heat boiler discharges low-temperature flue gas through the exhaust pipe. The heat recovery device is used to provide heat energy to the cogeneration system (3).
4. The integrated oil sands dry distillation and thermoelectric system according to claim 3, characterized in that, The combined heat and power system (3) is used to recover and utilize the heat energy generated in the dry distillation process for power generation. It includes a steam turbine, a generator, a condenser and a feed water pump. The hot steam produced by the waste heat boiler is transported to the steam turbine, and the steam turbine drives the generator to generate electricity. The low-temperature steam discharged from the steam turbine is condensed into circulating water by the condenser, and the circulating water is transported to the waste heat boiler by the feed water pump.
5. The integrated oil sands dry distillation and thermoelectric system according to claim 4, characterized in that, The waste gas treatment system (4) includes an electrostatic precipitator. The inlet end of the electrostatic precipitator is connected to the flue gas pipe of the waste heat boiler. The outlet end of the electrostatic precipitator is connected to a spray cooling box and a secondary combustion chamber. The spray cooling box is connected to a light oil storage tank. The secondary combustion chamber is connected to an SNCR denitrifier. The SNCR denitrifier is connected to a flue gas heating box. The flue gas heating box is connected to a washing and purification box. The washing and purification box is connected to a chimney through a fan. Activated carbon and molecular sieves are installed inside the washing and purification box.