CN101665707A - Low grade oil shale processing technique - Google Patents
Low grade oil shale processing technique Download PDFInfo
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- CN101665707A CN101665707A CN200810013085A CN200810013085A CN101665707A CN 101665707 A CN101665707 A CN 101665707A CN 200810013085 A CN200810013085 A CN 200810013085A CN 200810013085 A CN200810013085 A CN 200810013085A CN 101665707 A CN101665707 A CN 101665707A
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Abstract
The invention provides a low grade oil shale processing technique. Shale of a retort furnace is preheated in a dry distillation section on the upper part of the furnace to raise temperature, and the water content and wetted gas on the surface of the shale are removed; the temperature of the shale is increasingly raised in a process of moving the dry distillation section down, and when the temperature is raised to 120 DEG C, the water content on the surface is evaporated completely; when the temperature is raised to between 150 and 180 DEG C, gases adsorbed in the shale are released; when the temperature exceeds 180 DEG C, organic matters in the shale are started to be decomposed to generate water content, gases such as carbon dioxide, sulfureted hydrogen and the like; and when the temperature of the shale is continuously raised to 520 DEG C, tar oil in the shale is fundamentally released; temperatures of various parts of the retort furnace are controlled, and the final temperature of the retort furnace is mainly controlled to 520 DEG C; and a thermometer is arranged under an arch abutment of a mixing chamber, and is inserted in the depth of between 1.0 and 1.5 meters. The low gradeoil shale processing technique has the advantages that: the oil rate of the 5 percent low grade oil shale is over 75 percent, and more shale oil can be extracted from low grade shale ore through themeasure.
Description
Technical field
The present invention relates to the petrochemical technology field, a kind of low grade oil shale processing technique is provided especially.
Background technology
Fast development along with Chinese national economy, oil consumption increases rapidly, China also strengthens gradually to the degree of dependence of foreign oil resource, in order to reduce dependence to petroleum import, people have taked corresponding security strategy, as optimize energy structure, greatly develop gas industry, develop gelatin liquefaction system wet goods in good time.Because advantage and product characteristics on the oil shale resource, the resinous shale system oil of making becomes one of countermeasure wherein.Obtain the shale oil ratio from resinous shale and be easier to, and with natural stone oil composition, character similar, be comparatively ideal source of liquid fuel.Along with China joined WTO, it is inevitably that the price of oil and the oil price in the world integrate with, and this has brought opportunity for resinous shale petroleum refining industry, has also brought vast potential for future development.
China has abundant oil shale reserves, but oil length differs greatly the shale oil recovery producer of China, though passed through the production of the shale oil of decades, but content is lower than 5% shale ore, thinks and be unworthy extracting shale oil that the result has caused the significant wastage of resource.
Summary of the invention
The objective of the invention is waste, a kind of low grade oil shale processing technique is provided for fear of resource.
The invention provides a kind of low grade oil shale processing technique, it is characterized in that: the temperature of each one of control gas retort mainly is warm 520 ℃ eventually of destructive distillation.The shale of gas retort is removed the moisture and the damp wet body on shale surface at stove top retort section pre-heating temperature elevation.Shale temperature in the process that retort section moves down constantly raises, surface-moisture evaporates when temperature is elevated to 120 ℃, when temperature is raised to 150 ℃--emit the inner adsorbed gas of shale in the time of 180 ℃, when temperature surpasses 180 ℃ in the shale organic matter begin to decomposite gases such as moisture, carbonic acid gas and hydrogen sulfide.
When shale continuation intensification reached 520 ℃, the coal-tar middle oil basic release of shale finished.This shows, pyrolysis temperature is the leading indicator that influences oily yield in the retort process, originally 4 points are mainly got in the temperature survey of gas retort, because resinous shale is a solid materials, it is long that temperature measuring equipment can not stretch into, and therefore do not detect temperature actual in the stove, also just judge the combustion case in not coming out of the stove, because the temperature error of retort section and segment occurred institute side is very big, the whole temperature of gas retort can't be grasped, and therefore takes to measure the method for mixing section temperature.
Under the mixing section arch abutment thermometer is set, depth of penetration is a 1.0-1.5 rice, because the solid resinous shale enters less than mixing section, thereby has avoided wearing and tearing and destruction to temperature measuring equipment.According to the throughput per hour of mixing section temperature and destructive distillation shale, just can grasp retort section temperature eventually, the operation to every gas retort has directive significance like this.Can bring into play gas retort and receive the maximum effectiveness of oil.Strict control air output avoids oxygen superfluous to retort section burning shale oil.Be controlled at below 1% in the mixing indoor oxygen content.
Shale becomes shale semicockes after emitting tar, move down into the segment occurred of bottom through the arch abutment hole of middle part mixing section by the top retort section, the main air generation combustion reactions that comes on fixed carbon in segment occurred in the shale semicockes and the furnace bottom bottom, emit a large amount of heat, the water vapor acting of carbon in the semicoke and main air produces a large amount of gas simultaneously, and absorption heat, the gas band the mixing section that heat rises to the middle part, the hot gas that feeds with the middle part mixes mutually, destructive distillation thermal source as the new form advance rock in top, the 55-60%. resinous shale that accounts for total heat by the bottom heat supply under the normal circumstances extracts in the process of shale oil, oxygen concentration is the leading indicator that influences oil yield in the gas, with gaseous heat-carrier resinous shale is carried out drying, during heating such as destructive distillation, its concentration of oxygen can not surpass 1%, otherwise the shale oil productive rate can significantly reduce because of organic oxidation.For strictness control oxygen enters retort section, adopt gas retort mixing section bottom to add oxygen analyzer and match with furnace bottom pressure, accurately grasp rational air output, make oxygen abundant and fixed carbon burning at segment occurred.When recording oxygen level when high, can reduce air output, so just changed original surplus air and scurried into retort section and make oil firing.Thereby improved oily yield, increased benefit.
Strengthen receiving the dynamics raising oil-collecting ratio of oil ring joint.The mixed gass such as tar of gas, generation in (bringing up to 75%) stove by original 60%, be subjected to the effect of outside gas dispatch machine to enter collecting tubule through the extraction of battle array umbrella delivery line, after being recycled water washing in the collecting tubule, gases such as gas that is not cooled and tar enter washing saturator and continue washing, and twice washing process also is twice gas and oil cooling separating process.Through after last twice washing, shale oil is not also thoroughly regained.According to this situation, we have installed electric fishing equipment additional in the outlet of washing saturator, by installing the electric fishing device additional, pass through static, under macromole mist of oil in the air-flow deposited, make the lightweight oil that originally in water washing process, can not wash in electric fishing, all can be in the effect of electric field deposit, the quality of shale oil is improved, and oil-collecting ratio increases.
Through calculating, it is 0.1 ton that per 1000 tons of oil shale ore can be overcharged oil, calculates by handling 6000 tons of ores every day, can overcharge 0.6 ton of oil in 24 hours, produces in year and can receive oil 8000 * 0.6 ÷ 24=200 tons in 8000 hours, has created tangible economic benefit.Simultaneously, the resistance of equipment reduces, and has saved quantity of circulating water, reduces the discharging of toxic substance.Effectively protected physical environment.By taking above measure, making content is that the oil yield of 5% low grade oil shale has reached more than 75%, has negated the viewpoint that low grade oil shale can not be fuel-displaced fully.Below 1%.Strengthen receiving the dynamics raising oil-collecting ratio of oil ring joint.By taking above measure, making content is that the oil yield of 5% low grade oil shale has reached more than 75%, has negated the viewpoint that low grade oil shale can not be fuel-displaced fully.
Advantage of the present invention:
By taking above measure, making content is that the oil yield of 5% low grade oil shale has reached more than 75%, has negated the viewpoint that low grade oil shale can not be fuel-displaced fully.The oil length of shale ore on average belongs to low-grade shale ore about 5%, method of the present invention can make low-grade shale ore extract more shale oil.
Embodiment
Embodiment 1
Present embodiment provides a kind of low grade oil shale processing technique, it is characterized in that: the temperature of each one of control gas retort mainly is warm 520 ℃ eventually of destructive distillation.The shale of gas retort is removed the moisture and the damp wet body on shale surface at stove top retort section pre-heating temperature elevation.Shale temperature in the process that retort section moves down constantly raises, surface-moisture evaporates when temperature is elevated to 120 ℃, when temperature is raised to 150 ℃--emit the inner adsorbed gas of shale in the time of 180 ℃, when temperature surpasses 180 ℃ in the shale organic matter begin to decomposite gases such as moisture, carbonic acid gas and hydrogen sulfide.
When shale continuation intensification reached 520 ℃, the coal-tar middle oil basic release of shale finished.This shows, pyrolysis temperature is the leading indicator that influences oily yield in the retort process, originally 4 points are mainly got in the temperature survey of gas retort, because resinous shale is a solid materials, it is long that temperature measuring equipment can not stretch into, and therefore do not detect temperature actual in the stove, also just judge the combustion case in not coming out of the stove, because the temperature error of retort section and segment occurred institute side is very big, the whole temperature of gas retort can't be grasped, and therefore takes to measure the method for mixing section temperature.
Under the mixing section arch abutment thermometer is set, depth of penetration is 1,0-1,5 meters, because the solid resinous shale enters less than mixing section, thereby has avoided wearing and tearing and destruction to temperature measuring equipment.According to the throughput per hour of mixing section temperature and destructive distillation shale, just can grasp retort section temperature eventually, the operation to every gas retort has directive significance like this.Can bring into play gas retort and receive the maximum effectiveness of oil.Strict control air output avoids oxygen superfluous to retort section burning shale oil.Be controlled at below 1% in the mixing indoor oxygen content.
Shale becomes shale semicockes after emitting tar, move down into the segment occurred of bottom through the arch abutment hole of middle part mixing section by the top retort section, the main air generation combustion reactions that comes on fixed carbon in segment occurred in the shale semicockes and the furnace bottom bottom, emit a large amount of heat, the water vapor acting of carbon in the semicoke and main air produces a large amount of gas simultaneously, and absorption heat, the gas band the mixing section that heat rises to the middle part, the hot gas that feeds with the middle part mixes mutually, destructive distillation thermal source as the new form advance rock in top, the 55-60%. resinous shale that accounts for total heat by the bottom heat supply under the normal circumstances extracts in the process of shale oil, oxygen concentration is the leading indicator that influences oil yield in the gas, with gaseous heat-carrier resinous shale is carried out drying, during heating such as destructive distillation, its concentration of oxygen can not surpass 5%, otherwise the shale oil productive rate can significantly reduce because of organic oxidation.For strictness control oxygen enters retort section, adopt gas retort mixing section bottom to add oxygen analyzer and match with furnace bottom pressure, accurately grasp rational air output, make oxygen abundant and fixed carbon burning at segment occurred.When recording oxygen level when high, can reduce air output, so just changed original surplus air and scurried into retort section and make oil firing.Thereby improved oily yield, increased benefit.
Strengthen receiving the dynamics raising oil-collecting ratio of oil ring joint.The mixed gass such as tar of gas, generation in (bringing up to 75%) stove by original 60%, be subjected to the effect of outside gas dispatch machine to enter collecting tubule through the extraction of battle array umbrella delivery line, after being recycled water washing in the collecting tubule, gases such as gas that is not cooled and tar enter washing saturator and continue washing, and twice washing process also is twice gas and oil cooling separating process.Through after last twice washing, shale oil is not also thoroughly regained.According to this situation, we have installed electric fishing equipment additional in the outlet of washing saturator, by installing the electric fishing device additional, pass through static, under macromole mist of oil in the air-flow deposited, make the lightweight oil that originally in water washing process, can not wash in electric fishing, all can be in the effect of electric field deposit, the quality of shale oil is improved, and oil-collecting ratio increases.
Through calculating, it is 0.1 ton that per 1000 tons of oil shale ore can be overcharged oil, calculates by handling 6000 tons of ores every day, can overcharge 0.6 ton of oil in 24 hours, produces in year and can receive oil 8000 * 0.6 ÷ 24=200 tons in 8000 hours, has created tangible economic benefit.Simultaneously, the resistance of equipment reduces, and has saved quantity of circulating water, reduces the discharging of toxic substance.Effectively protected physical environment.By taking above measure, making content is that the oil yield of 5% low grade oil shale has reached more than 75%, has negated the viewpoint that low grade oil shale can not be fuel-displaced fully.Below 1%.Strengthen receiving the dynamics raising oil-collecting ratio of oil ring joint.By taking above measure, making content is that the oil yield of 5% low grade oil shale has reached more than 75%, has negated the viewpoint that low grade oil shale can not be fuel-displaced fully.
Claims (3)
1, a kind of low grade oil shale processing technique, it is characterized in that: the shale of gas retort is at stove top retort section pre-heating temperature elevation, remove the moisture and the damp wet body on shale surface, shale temperature in the process that retort section moves down constantly raises, surface-moisture evaporates when temperature is elevated to 120 ℃, when temperature is raised to 150 ℃--emit the inner adsorbed gas of shale in the time of 180 ℃, when temperature surpasses 180 ℃ in the shale organic matter begin to decomposite gases such as moisture, carbonic acid gas and hydrogen sulfide; When shale continuation intensification reached 520 ℃, the coal-tar middle oil basic release of shale finished, and takes to measure the method for mixing section temperature, the temperature of each one of control gas retort, mainly be warm 520 ℃ eventually of destructive distillation, under the mixing section arch abutment thermometer be set, depth of penetration is a 1.0-1.5 rice.
2, according to the described low grade oil shale processing technique of claim 1, it is characterized in that: the strict control of described low grade oil shale processing technique air output, avoid oxygen superfluous to retort section burning shale oil, be controlled at below 1% in the mixing indoor oxygen content, when with gaseous heat-carrier resinous shale being carried out heating such as drying, destructive distillation, its concentration of oxygen can not surpass 5%.
3, according to the described low grade oil shale processing technique of claim 1, it is characterized in that: described low grade oil shale processing technique, strengthen receiving the dynamics raising oil-collecting ratio of oil ring joint, bring up to 75% by original 60%, the mixed gass such as tar of gas, generation in the stove, be subjected to the effect of outside gas dispatch machine to enter collecting tubule through the extraction of battle array umbrella delivery line, after being recycled water washing in the collecting tubule, gases such as gas that is not cooled and tar enter washing saturator and continue washing, and twice washing process also is twice gas and oil cooling separating process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810013085A CN101665707A (en) | 2008-09-03 | 2008-09-03 | Low grade oil shale processing technique |
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| CN200810013085A CN101665707A (en) | 2008-09-03 | 2008-09-03 | Low grade oil shale processing technique |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102464990A (en) * | 2010-11-05 | 2012-05-23 | 唐山市嘉恒实业有限公司 | Method and equipment for extracting petroleum from oily sludge and oil shale |
| CN102776010A (en) * | 2012-08-10 | 2012-11-14 | 江苏鹏飞集团股份有限公司 | Oil shale destructive distillation method |
| CN102936509A (en) * | 2012-10-25 | 2013-02-20 | 新疆宝明矿业有限公司 | External heat radiation type dry distillation system for oil shale |
-
2008
- 2008-09-03 CN CN200810013085A patent/CN101665707A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102464990A (en) * | 2010-11-05 | 2012-05-23 | 唐山市嘉恒实业有限公司 | Method and equipment for extracting petroleum from oily sludge and oil shale |
| CN102464990B (en) * | 2010-11-05 | 2013-12-11 | 唐山市嘉恒实业有限公司 | Method and equipment for extracting petroleum from oily sludge and oil shale |
| CN102776010A (en) * | 2012-08-10 | 2012-11-14 | 江苏鹏飞集团股份有限公司 | Oil shale destructive distillation method |
| CN102776010B (en) * | 2012-08-10 | 2013-12-04 | 江苏鹏飞集团股份有限公司 | Oil shale dry distillation method |
| CN102936509A (en) * | 2012-10-25 | 2013-02-20 | 新疆宝明矿业有限公司 | External heat radiation type dry distillation system for oil shale |
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Application publication date: 20100310 |