Efficient internal thermal type oil extraction device for powder oil shale and extraction method thereof

Abstract

The invention relates to an efficient internal thermal type oil extraction device for powder oil shale and an extraction method thereof. The device consists of a gas uniform distributer, a dry distillation furnace, a whirlwind clamping sleeve, a water-cooling electrical tar precipitator, an oil storage tank, a burner and a metal beehive-type heat exchanger. A dry distillation section in the dry distillation furnace is provided with the gas uniform distributer, thereby realizing the direct heat exchange between powder materials and a gas heat carrier and greatly improving heat efficiency; a multi-layer uniform wind distribution technique is used to ensure the complete dry distillation of the oil shale; and no extra energy is supplied to the whole system, thereby achieving self-sufficiency of energy. In the novel efficient internal thermal type oil extraction process for the powder oil shale, an internal thermal method is adopted, namely, the oil shale is heated by directly by gas, and the oil shale is decomposed by heating so as to generate dry distillation oil gas; and then as the dry distillation oil gas is condensed and collect to obtain high-quality crude oil and gassy mashgas.The novel process has high heat efficiency, is stable and safe, simple and reliable, and the like; and by using the novel process, the production cost of the oil extraction of the powder oil shale isgreatly reduced, and oil yield is significantly improved, thereby improving the comprehensive utilization of the oil shale.

Description

technical field

[0001] The invention relates to a new high-efficiency internal heating powder oil shale oil extraction process and device, which is characterized in that a unique structure is designed, which solves the problem of poor air permeability of gas in powder and realizes the combination of powder and gas The direct heat exchange of the heat carrier greatly improves the thermal efficiency; the multi-layer uniform air distribution technology is adopted to ensure the complete dry distillation of oil shale; the whole system does not need additional energy supply and realizes energy self-sufficiency. Background technique

[0002] The world is rich in oil shale resources, and its reserves converted into shale oil are as high as more than 400 billion tons, which is far larger than the world's proven crude oil reserves of more than 170 billion tons, and is also larger than the world's crude oil resources of 300 billion tons. In the current era of high oil prices, the devel...

Examples

Embodiment 1

[0030] The raw material powdered oil shale enters the carbonization furnace from the feeding device, and after passing through the drying section, it directly exchanges heat with the hot gas gas at 550°C in the constant temperature carbonization section, heats the raw material powdered oil shale to 450°C, and produces Oil and gas: The decomposed oil and gas enter the condensing system from the top of the furnace through the oil and gas collection device to condense, and then cool down to liquid shale oil and enter the oil storage tank. The oil shale that has been fully carbonized in the retort furnace forms semi-coke, which enters the cooling section at the lower part of the retort furnace under its own gravity, and the cooled shale semi-coke is discharged from the bottom. Part of the uncondensed gas gas passes into the burner for combustion, and the other part enters the cooling section of the carbonization furnace to recover the sensible heat of semi-coke, and then enters the...

Embodiment 2

[0032] The raw material powdered oil shale enters the carbonization furnace from the feeding device, and after passing through the drying section, it conducts direct heat exchange with the hot gas gas at 600°C in the constant temperature carbonization section, heats the raw material powdered oil shale to 475°C, and produces Oil and gas: The decomposed oil and gas enter the condensing system from the top of the furnace through the oil and gas collection device to condense, and then cool down to liquid shale oil and enter the oil storage tank. The oil shale that has been fully carbonized in the retort furnace forms semi-coke, which enters the cooling section at the lower part of the retort furnace under its own gravity, and the cooled shale semi-coke is discharged from the bottom. Part of the uncondensed gas gas is passed into the burner for combustion, and the other part enters the cooling section of the retort furnace to recover the sensible heat of semi-coke, and then enters t...

Embodiment 3

[0034] The raw material powdered oil shale enters the retort furnace from the feeding device, and after passing through the drying section, it exchanges heat directly with the hot gas gas at 650°C in the constant temperature retort section, heats the raw material powdered oil shale to 500°C, and produces Oil and gas: The decomposed oil and gas enter the condensing system from the top of the furnace through the oil and gas collection device to condense, and then cool down to liquid shale oil and enter the oil storage tank. The oil shale that has been fully carbonized in the retort furnace forms semi-coke, which enters the cooling section at the lower part of the retort furnace under its own gravity, and the cooled shale semi-coke is discharged from the bottom. Part of the uncondensed gas gas is passed into the burner for combustion, and the other part enters the cooling section of the retort furnace to recover the sensible heat of semi-coke, and then enters the metal honeycomb h...

technical field

[0001] The invention relates to a new high-efficiency internal heating powder oil shale oil extraction process and device, which is characterized in that a unique structure is designed, which solves the problem of poor air permeability of gas in powder and realizes the combination of powder and gas The direct heat exchange of the heat carrier greatly improves the thermal efficiency; the multi-layer uniform air distribution technology is adopted to ensure the complete dry distillation of oil shale; the whole system does not need additional energy supply and realizes energy self-sufficiency. Background technique

[0002] The world is rich in oil shale resources, and its reserves converted into shale oil are as high as more than 400 billion tons, which is far larger than the world's proven crude oil reserves of more than 170 billion tons, and is also larger than the world's crude oil resources of 300 billion tons. In the current era of high oil prices, the devel...

Examples

Embodiment 1

[0030] The raw material powdered oil shale enters the carbonization furnace from the feeding device, and after passing through the drying section, it directly exchanges heat with the hot gas gas at 550°C in the constant temperature carbonization section, heats the raw material powdered oil shale to 450°C, and produces Oil and gas: The decomposed oil and gas enter the condensing system from the top of the furnace through the oil and gas collection device to condense, and then cool down to liquid shale oil and enter the oil storage tank. The oil shale that has been fully carbonized in the retort furnace forms semi-coke, which enters the cooling section at the lower part of the retort furnace under its own gravity, and the cooled shale semi-coke is discharged from the bottom. Part of the uncondensed gas gas passes into the burner for combustion, and the other part enters the cooling section of the carbonization furnace to recover the sensible heat of semi-coke, and then enters the...

Embodiment 2

[0032] The raw material powdered oil shale enters the carbonization furnace from the feeding device, and after passing through the drying section, it conducts direct heat exchange with the hot gas gas at 600°C in the constant temperature carbonization section, heats the raw material powdered oil shale to 475°C, and produces Oil and gas: The decomposed oil and gas enter the condensing system from the top of the furnace through the oil and gas collection device to condense, and then cool down to liquid shale oil and enter the oil storage tank. The oil shale that has been fully carbonized in the retort furnace forms semi-coke, which enters the cooling section at the lower part of the retort furnace under its own gravity, and the cooled shale semi-coke is discharged from the bottom. Part of the uncondensed gas gas is passed into the burner for combustion, and the other part enters the cooling section of the retort furnace to recover the sensible heat of semi-coke, and then enters t...

Embodiment 3

[0034] The raw material powdered oil shale enters the retort furnace from the feeding device, and after passing through the drying section, it exchanges heat directly with the hot gas gas at 650°C in the constant temperature retort section, heats the raw material powdered oil shale to 500°C, and produces Oil and gas: The decomposed oil and gas enter the condensing system from the top of the furnace through the oil and gas collection device to condense, and then cool down to liquid shale oil and enter the oil storage tank. The oil shale that has been fully carbonized in the retort furnace forms semi-coke, which enters the cooling section at the lower part of the retort furnace under its own gravity, and the cooled shale semi-coke is discharged from the bottom. Part of the uncondensed gas gas is passed into the burner for combustion, and the other part enters the cooling section of the retort furnace to recover the sensible heat of semi-coke, and then enters the metal honeycomb h...

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