CN102021001A - Device and method for recovering shale oil from air tower segment of oil shale distillation system - Google Patents
Device and method for recovering shale oil from air tower segment of oil shale distillation system Download PDFInfo
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- CN102021001A CN102021001A CN2010105880071A CN201010588007A CN102021001A CN 102021001 A CN102021001 A CN 102021001A CN 2010105880071 A CN2010105880071 A CN 2010105880071A CN 201010588007 A CN201010588007 A CN 201010588007A CN 102021001 A CN102021001 A CN 102021001A
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Abstract
The invention relates to a device for recovering shale oil from an air tower segment of an oil shale distillation system, which comprises an air tower, an air tower bottom pump, an air tower dewaterer and an oil-water separating tank which are connected in series in turn. A method for recovering the shale oil from the air tower segment of the oil shale distillation system comprises the following steps of: firstly, extracting shake oil gas carried in circular gas by using an air tower water washing process; secondly, allowing the mixture of oil and water to enter the air tower dewaterer to remove water from the mixture of oil and water; thirdly, allowing the purified shale oil to enter the oil-water separating tank to further dewater the purified shale oil; and finally, discharging the dewatered product from the device as the finished oil product. The method has an advanced process, the device has a long continuous operation period, a small size and a low fault rate, the shale oil gas carried in the circular gas can be effectively extracted to prepare high-purity shale oil, corrosion of the oil gas to a pipeline is avoided, an obvious energy-saving and exhaust-emission effect is achieved and considerable technical and economic benefit is created.
Description
Technical field
The invention belongs to petrochemical complex and environmental protection field, the device that relates to a kind of oil shale distillation system air tower section shale oil recovery, and the method for oil shale distillation system air tower section shale oil recovery, specifically, relate to a kind of method of carrying out shale oil extraction and purifying treatment in oil shale distillation system air tower section.
Background technology
Resinous shale is the coal associated resources, utilize oil shale distillation technology refining crude oil and byproduct thereof, has once supported China in the economic construction in oil-poor period, but also atrophy year by year once once of its research and development.At the beginning of the nineties in last century, the Fushun Mining Group is introduced circular economy concept, restarts the comprehensive utilization and the research and development of resinous shale.Wherein with oil shale oil-refining emphasis the most.
Fushun type retort has another name called the Fushun internally heated retort oven, is called for short fushun retort oven.Fushun oil shale is the non-adhesive lean ore, and organic content is low, is generally 15%, and oil length is average about 6%, the ash content height.In general, using this low grade oil shale to carry out the industrialization destructive distillation is difficult with gasification.But the retort section bottom is connected with the Fushun type retort of gasification section, owing to feed the air (main air) and shale semicockes gasification that contains saturated steam from furnace bottom, utilize the fixed carbon in the shale semicockes to carry out the gasification, and combustion reaction and supplied with a lot of heats in gasification section.Count shale semicockes per ton at the about 300Nm3 of the gas that gasification section produced, steam in it and the main air and cupel evaporation bring to the sensible heat in the gasification reaction process in the retort section jointly as thermal barrier, carry out oil shale retort.Shale semicockes after the destructive distillation fall into gasification section again and carry out oxidation and reduction reaction and heat supply in 500 ℃ of higher temperature.
Shale semicockes after peroxidation and reduction reaction, become the main air and the steam heat-exchanging of shale ashes and feeding in gasification section.Reclaimed the sensible heat of shale ashes.But, only by gasification section gas with sensible heat still not enough as resinous shale drying, heating and pyrogenous thermal source, so must have stove to supply with thermal cycling gas outward, to supply heat.
Fushun oil shale destructive distillation device normally 20 Fushun stoves (being called an one) share a cover condensate recovery system, when processing Fushun shale, the outlet of still tolerance of destructive distillation resinous shale per ton reaches 550～750m3, and in fact the destructive distillation oil gas that produced of self destructive distillation of resinous shale only is 40～50m3, and other all are as the circulation gas of thermal barrier and gasification section tolerance.The concentration of shale oil gas is not high in the destructive distillation oil gas, and other concentration as ammonia, hydrogen sulfide, pyridine etc. are lower.In the condensate recovery system of the 1950's, also be provided with the absorption tower of sulfuric acid absorption ammonia, the generation sulfate of ammoniac reclaims, and is back because of also uneconomical economically, and cancelled the recovery of ammonia.Even last at condensate recovery system also, once being provided with the absorption tower that absorbs the natural gas liquid in the gas with light oil, the back also will add thermal desorption etc. after absorbing natural gas liquid, and energy consumption is too big, thinks also uneconomical economically, and has cancelled the recovery of natural gas liquid.Current in Fushun shale factory, condensate recovery system has only been considered the shale oil recovery, does not reclaim other product.
About 90～110 ℃ of the temperature of outlet of still oil gas contains dust in the oil gas, be to enter collecting tubule under normal pressure, is recycled water and drenches cooling, the greasy filth in the eccysis gas (mixture of mink cell focus and dust).Collecting tubule has certain gradient, and washing water, greasy filth and shale oil after the drip washing are flowed in the collection mud jar along collecting tubule, carries out precipitate and separate.The greasy filth that precipitates is regularly extracted out with pump, and the isolated shale oil of collection mud jar accounts for 60% of total receipts oil mass.Washing water are sent into the gas mainfold internal recycle again with water circulating pump and are used.That is, be to be provided with collecting tubule in the condensation recovery process in Fushun at leading portion, it is dust separating to carry out oil gas with the method for drip washing.
Collecting tubule keeps suitable negative pressure, and through the gas after the drip washing, temperature is 80～90 ℃, enters the washing cooling tower of air tower bottom.The top of air tower is the main air saturator, and the bottom is the washing cooling tower, and two towers are folded mutually and are provided with water seal in the junction, prevents that the air of main air saturator from scurrying in the circulating mash gas of washing cooling tower.Recirculated water enters the main air saturator from the air column overhead, with the humidification air.Recirculated water goes into to wash cooling tower from the water seal overflow subsequently, washing and refrigeration cycle gas.This air tower contains the more carbonizing gas of greasy filth to processing and can not overhaul also more convenient because of obstruction influences production.The more important thing is it to utilize the main air humidification and reclaim the entrained part heat of circulating mash gas, and removed the shale oil gas of carrying secretly in the circulating mash gas.
Summary of the invention
Technical problem to be solved by this invention is, overcomes problems of the prior art, a kind of oil shale distillation system air tower section shale oil recovery apparatus and method is provided, thereby has solved problems of the prior art.
In order to address the above problem technical scheme of the present invention is such:
Oil shale distillation system air tower section shale oil recovery device comprises:
One is used for the air tower of humidifying air and washing refrigeration cycle gas; The import that air tower one termination is gone into the water route, another termination oil-water mixture export pipeline of air tower, the air tower is arranged between gas tower and the cooling tower, and air and circulating mash gas are by the circulation of air tower;
Described air Tata bottom outlet connects one the air column bottoms pump of pressure that is used to increase oil-water mixture, and the air column bottoms pump connects the oil-water mixture export pipeline;
Described air column bottoms pump outlet connection one is used for removing the air tower water trap of oil-water mixture moisture;
Described air tower water trap connects a gun barrel that is used for further purifying shale oil;
Described air tower, air column bottoms pump, air tower water trap and gun barrel be arranged in series successively.
Described air tower water trap has a circulating water outlet, and circulating water outlet is by the water route import of circulating water line connection air tower one end, and air tower, air column bottoms pump, air tower water trap are formed the circulation loop of sealing.
Air tower water trap is the eddy flow water trap.
A kind of oil shale distillation system air tower section shale oil recovery method,
1) adopt air tower washing process to extract the shale oil gas of carrying secretly in the circulating mash gas, have water spray in the air tower,
2) later step 1) in the oil-water mixture that produces enter and use it tentatively to remove wherein moisture in the air tower water trap,
3) through step 2) shale oil after purifying enters gun barrel and further dewaters, export as processed oil at last.
In step 2) in the recirculated water that removes of air tower water trap return again and continue humidifying air and washing refrigeration cycle gas in the air tower.
Through step 2) after air tower water trap handled, the water content of oil-water mixture was lower than 10%.
Beneficial effect, can remove moisture contained in the oil-water mixture effectively, the moisture that removes returns the air tower and continues humidifying air and washing refrigeration cycle gas, and after purifying shale oil enter gun barrel and further dewater, go out device as processed oil at last, so both reduced the fresh water consumption, prepare highly purified shale oil again, avoid oil gas to Corrosion of Pipeline, effects of energy saving and emission reduction is remarkable, and technical economic benefit is fairly obvious.
Description of drawings
Describe the present invention in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the schematic flow sheet of oil shale distillation system air tower section shale oil recovery of the present invention.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Referring to Fig. 1, present embodiment provides a kind of oil shale distillation system air tower section shale oil recovery device, and this device comprises: be arranged at the air tower 1 between gas tower and the cooling tower, be used for humidifying air and washing refrigeration cycle gas.
With the air column bottoms pump 2 that described air Tata bottom outlet links to each other, be used to increase the pressure of oil-water mixture.
With the air tower water trap 3 that described air column bottoms pump outlet links to each other, be used for removing the moisture of oil-water mixture.
Be arranged at air tower water trap gun barrel 4 afterwards, be used for further purifying shale oil.
Air tower water trap 3 can be selected all kinds of high-efficiency dehydration equipment such as eddy flow water trap for use.
Adopt the oil shale distillation system air tower section shale oil recovery method of said apparatus as follows:
The air inlet of air tower 1 in the oil shale distillation system---be entrained with shale oil gas in the circulating mash gas, adopt the recirculated water washing to extract shale oil gas in the air tower, and generate oil-water mixture;
Enter air tower water trap 3 from the effusive oil-water mixture of air tower 1 tower bottom outlet, use it tentatively to remove the moisture of oil-water mixture; After air tower water trap 3 was handled, the water content of oil-water mixture was lower than 10%.
With after purifying shale oil import gun barrel 4 further dehydration go out device as processed oil at last to improve the quality of shale oil;
The moisture that air tower water trap 3 removes returns air tower 1 and continues humidifying air and washing refrigeration cycle gas, makes moisture obtain recycle.
This programme selects for use the eddy flow water trap to remove moisture in the oil-water mixture, and following table is the physical parameter of import liquid (oil-water mixture), overflow liquid (shale oil) and the underflow liquid (recirculated water) of eddy flow water trap:
| Project | Oil-water mixture | Shale oil | Recirculated water |
| Temperature (℃) | 80 | 80 | 80 |
| Pressure (Pa) | 600000 | 300000 | 300000 |
| Mass rate (kg/h) | 350500 | 400 | 350100 |
When eddy flow water trap water inlet oleaginousness was not more than 2000mg/L, water outlet oil concentration was not more than 200mg/L, and when the water inlet oleaginousness was not more than 1000mg/L, water outlet oil concentration was not more than 150mg/L; Analytical value (be not more than 200mg/L or be not more than 150mg/L) qualification rate 〉=95% of the regulation frequency.Be not less than 3 years the work-ing life of the cyclone pipe of eddy flow water trap.
This cover oil shale distillation system air tower section shale oil recovery device, operate steadily, easy to operate, be easy to control, reach and satisfied industrial production and environmental harmony requirement, it has effectively extracted entrained oil gas in the circulating mash gas, prepared highly purified shale oil, avoided oil gas to Corrosion of Pipeline, effects of energy saving and emission reduction is remarkable, and technical economic benefit is obvious.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. oil shale distillation system air tower section shale oil recovery device is characterized in that, comprising:
One is used for the air tower of humidifying air and washing refrigeration cycle gas; The import that air tower one termination is gone into the water route, another termination oil-water mixture export pipeline of air tower, the air tower is arranged between gas tower and the cooling tower, and air and circulating mash gas are by the circulation of air tower;
Described air Tata bottom outlet connects one the air column bottoms pump of pressure that is used to increase oil-water mixture, and the air column bottoms pump connects the oil-water mixture export pipeline;
Described air column bottoms pump outlet connection one is used for removing the air tower water trap of oil-water mixture moisture;
Described air tower water trap connects a gun barrel that is used for further purifying shale oil;
Described air tower, air column bottoms pump, air tower water trap and gun barrel be arranged in series successively.
2. oil shale distillation system air tower section shale oil recovery device according to claim 1, it is characterized in that, described air tower water trap has a circulating water outlet, circulating water outlet is by the water route import of circulating water line connection air tower one end, and air tower, air column bottoms pump, air tower water trap are formed the circulation loop of sealing.
3. oil shale distillation system air tower section shale oil recovery device according to claim 1 is characterized in that air tower water trap is the eddy flow water trap.
4. oil shale distillation system air tower section shale oil recovery method is characterized in that,
1) adopt air tower washing process to extract the shale oil gas of carrying secretly in the circulating mash gas, have water spray in the air tower,
2) later step 1) in the oil-water mixture that produces enter and use it tentatively to remove wherein moisture in the air tower water trap,
3) through step 2) shale oil after purifying enters gun barrel and further dewaters, export as processed oil at last.
5. oil shale distillation system air tower section shale oil recovery method according to claim 4 is characterized in that, in step 2) in the recirculated water that removes of air tower water trap return again and continue humidifying air and washing refrigeration cycle gas in the air tower.
6. oil shale distillation system air tower section shale oil recovery method according to claim 4 is characterized in that, through step 2) after air tower water trap handled, the water content of oil-water mixture was lower than 10%.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105880071A CN102021001A (en) | 2010-12-14 | 2010-12-14 | Device and method for recovering shale oil from air tower segment of oil shale distillation system |
| EEP201300019A EE05753B1 (en) | 2010-12-14 | 2011-12-13 | Method and device for recycling of oil-water-sludge of oil shale dry distillation system |
| PCT/CN2011/083876 WO2012079499A1 (en) | 2010-12-14 | 2011-12-13 | Method and device for enclosed recycling of oil-water-sludge in oil shale dry distillation system |
| US13/884,156 US9938472B2 (en) | 2010-12-14 | 2011-12-13 | Method for enclosed recycling of oil-water-sludge in oil shale dry distillation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105880071A CN102021001A (en) | 2010-12-14 | 2010-12-14 | Device and method for recovering shale oil from air tower segment of oil shale distillation system |
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| CN102021001A true CN102021001A (en) | 2011-04-20 |
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| CN2010105880071A Pending CN102021001A (en) | 2010-12-14 | 2010-12-14 | Device and method for recovering shale oil from air tower segment of oil shale distillation system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102295942A (en) * | 2011-08-10 | 2011-12-28 | 上海华畅环保设备发展有限公司 | Shale oil hermetical recovery method and device in oil shale destructive distillation system |
| WO2012079499A1 (en) * | 2010-12-14 | 2012-06-21 | 上海华畅环保设备发展有限公司 | Method and device for enclosed recycling of oil-water-sludge in oil shale dry distillation system |
| CN107760351A (en) * | 2017-12-05 | 2018-03-06 | 洛阳建材建筑设计研究院有限公司 | A kind of separating technology of oil shale retorting high-temperature oil gas piece-rate system |
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| CN1730609A (en) * | 2005-08-24 | 2006-02-08 | 王华峰 | Biomass pyrogenation gasification and purification method |
| CN201193222Y (en) * | 2008-03-10 | 2009-02-11 | 中国重型机械研究院 | Oil production device of oil shale retort |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012079499A1 (en) * | 2010-12-14 | 2012-06-21 | 上海华畅环保设备发展有限公司 | Method and device for enclosed recycling of oil-water-sludge in oil shale dry distillation system |
| US9938472B2 (en) | 2010-12-14 | 2018-04-10 | Shanghai Huachang Enviromental Protection Co. Ltd. | Method for enclosed recycling of oil-water-sludge in oil shale dry distillation system |
| CN102295942A (en) * | 2011-08-10 | 2011-12-28 | 上海华畅环保设备发展有限公司 | Shale oil hermetical recovery method and device in oil shale destructive distillation system |
| CN102295942B (en) * | 2011-08-10 | 2013-03-27 | 上海华畅环保设备发展有限公司 | Shale oil hermetical recovery method and device in oil shale destructive distillation system |
| CN107760351A (en) * | 2017-12-05 | 2018-03-06 | 洛阳建材建筑设计研究院有限公司 | A kind of separating technology of oil shale retorting high-temperature oil gas piece-rate system |
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Application publication date: 20110420 |