CN101575537A - Process for producing light and heavy fuel oil and high-quality asphalt by hydrogenating coal tar at medium and low temperature - Google Patents
Process for producing light and heavy fuel oil and high-quality asphalt by hydrogenating coal tar at medium and low temperature Download PDFInfo
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- CN101575537A CN101575537A CNA2008100644516A CN200810064451A CN101575537A CN 101575537 A CN101575537 A CN 101575537A CN A2008100644516 A CNA2008100644516 A CN A2008100644516A CN 200810064451 A CN200810064451 A CN 200810064451A CN 101575537 A CN101575537 A CN 101575537A
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Abstract
The invention relates to a process for producing light and heavy fuel oil and high-quality asphalt by hydrogenating coal tar at medium and low temperature, which comprises the following steps of filtration, prefractionation, hydrogenation for refining and fractionation. A decompressing and shunting flow is adopted, and a reaction part adopts a cold shunting flow to simplify the flow; a fractionation part adopts flows of a fractionating tower and a stabilization tower, and after impurities of raw materials are mechanically removed, the raw materials enter a prefractionating tower to be processed by adopting a negative pressure operation, noncondensable gas in a reflux tank at the top of the prefractionating tower is pumped out; after being cooled to 40 DEG C by a water cooler in a pumping system and entering an oil skimming tank for three-phase separation, a part of oil is sent to a hydrogenated raw oil storage pump of a tank area by an emptying oil pump; after oil at the bottom of the prefractionating tower at 380-420 DEG C is thermally polymerized in an asphalt modifying device, high-quality modified asphalt is prepared; after being distillated and extracted at 360-380 DEG C, one part of prefractionated modified oil returns once again to prefractionated raw oil after secondary filtration to remix the raw oil; and the other part of the prefractionated modified oil is sent to a hydrogenated raw oil storage tank for hydrogenation. The process is applied to the field of coal chemical industry.
Description
Technical field:
The present invention relates to the technology that a kind of middle coalite tar hydrogenation is produced light-weight fuel oil, heavy fuel oil (HFO) and high-quality asphalt.
Background technology:
The existing technology of coal tar hydrogenating is the existing purified gas purifying hydrogen of hydrogen more than needed of coal dragonization chemical company in utilizing, and utilize oily coal tar in the present byproduct PKM vapourizing furnace, fractionation production hydrogenating materials and coal system heavy oil adopt hydrogenation technique that hydrogenating materials is carried out upgrading.Upgraded product makes petroleum naphtha and coal system fuel oil through fractionation, and the hydrocarbon gas of production process by-product send the fuel gas pipe network, coal system heavy oil.
Decompression shunting flow process is partly adopted in the raw material prefractionation, reduces cut point, slows down condensation, coking speed, the prolong operation cycle of inferior feedstock oil high-temperature heating process, and reactive moieties adopts cold minute flow process, simplifies flow process; Separation column and stabilizer tower flow process are partly adopted in fractionation.
Summary of the invention:
The purpose of this invention is to provide a kind of utilization ratio that improves stock oil, improve the technology that the middle coalite tar hydrogenation of cut and asphalt quality is produced light-weight fuel oil, heavy fuel oil (HFO) and high-quality asphalt.
Above-mentioned purpose realizes by following technical scheme:
Middle coalite tar hydrogenation production is light, the technology of heavy fuel oil (HFO) and high-quality asphalt, its composition comprises: filter, prefractionation, hydrofining, fractionation process, solid mechanical impurity and the water greater than 50 microns is removed in the centrifuging of three mixed coal tar process, and then the process malleation removes by filter the solid particulate greater than 25 microns, two-step approach enters preliminary fractionator after removing the solid mechanical impurity, sub-preliminary fractionator adopts negative-pressure operation, vacuum tightness is-0.05MPA cat head evacuation adopts low-pressure steam as power, non-condensable gas in the prefractionation cat head return tank is extracted out, after water cooler is cooled to enter skimming tank and carry out three phase separation behind 40 degree in evacuation system, non-condensable gas enters atmosphere, part oil is delivered to tank field hydrogenating materials oil measure jar by the emptying oil pump, oily(waste)water is pumped into the sour water jar by oily(waste)water, oil 380-420 degree is in Modified Pitch Plant after the thermopolymerization at the bottom of the prefractionation Tata, come out of the stove, product is the high-quality modified pitch, upgrading oil after the prefractionation, in a prefractionation stock oil part comes back to cascade filtration after the extraction of 360-380 degree cut after, return and join stock oil, another part goes hydrogenation reaction stock oil basin to wait for hydrogenation.
The technology of light, heavy fuel oil (HFO) of coalite tar hydrogenation production and high-quality asphalt in described, described filtration are with light oil, middle oil and residual oil proportionally 1: 6: 3-1: mixed coal tar was by the filtration of efficient centrifugal strainer in 20: 10 three.
The technology of light, heavy fuel oil (HFO) of coalite tar hydrogenation production and high-quality asphalt in described, described hydrofining are that hydrogenating desulfurization, hydrodenitrification, hydrogenation deoxidation, hydrogenation of olefins, aromatic hydrogenation are fullly closed, hydrocracking, hydrodemetallation (HDM), condensation reaction.
The production of coalite tar hydrogenation is light in described, the technology of heavy fuel oil (HFO) and high-quality asphalt, described fractionation process is to enter separation column after the low branch oil that refining reaction partly comes is spent through heat exchange to 275, cat head oil gas enters separation column top return tank and carries out the oil gas water three phase separation after the condensation of separation column air cooler is cooled to 40 degree, the gas that flash distillation is come out drains into the fuel gas pipe network, sulfur-bearing contains the powerless sour water jar of ammonia sewage, an oil phase part is as trim the top of column, a part is removed stabilizer tower as thick gas and oil, diesel oil segmentation extraction at the bottom of the tower: a part is made the stabilizer reboiler thermal source and is added separation column through reboiler furnace, another part is cooled to 40 degree through heat exchange, and to go to the tank field be coal system light-weight fuel oil, going to the tank field greater than diesel oil at the bottom of the tower of 350 degree through heat exchange to 50 degree is that coal system heavy fuel oil (HFO) is a heavy gas oil, thick gas and oil enters further rectifying behind the stabilizer tower, obtains petroleum naphtha.
This technical scheme has following beneficial effect:
1. the present invention adopts the method for light oil azeotropic continuously dehydrating because light oil is added in the coal tar, makes the effect of coal tar dehydration remarkable.Cat head refluxes with light oil, and water and light oil form azeotropic mixture and overflowed by cat head, goes into separator after the condensation cooling, divides the light oil after the water outlet to be back to dehydration tower, and dehydration of tar can be taken off to below 0.1% by original 0.5%.
Tar after the dehydration can reduce the hear rate of Distallation systm, increases the throughput of equipment, reduces the Distallation systm resistance, improves cut and asphalt quality, alleviates equipment corrosion.
2. the present invention has added light oil in coal tar, make oil viscosity decline in the coal tar, the permeability of strainer is strengthened, cause the fracture of a part of macromolecule side chain and group in the coal tar simultaneously, filter effect is reduced to 0.015%. by original content of impurities 1.57%
Since novel process adopted and washed carbolineum and return and join stock oil technology, not only improved a gasification temperature (by original-0.05MPa, 275 degree rise to-0.05MPa, 350 degree), underpressure distillation has slowed down the Pintsch process of coal tar, make upgrading oil distillate productive rate and improve greatly, and improved gasification generation coal system residual oil and utilization ratio and utility value.From tar, steamed maximum naphthalenes simultaneously, acenaphthene, fluorenes, anthracene, phenol, pyridine, quinoline etc., and output the very high middle temperature tar pitch of softening temperature.
4. by middle coalite tar hydrogenation production lightweight, heavy fuel oil (HFO) and high-quality asphalt novel process, coalite tar hydrogenation production lightweight (petroleum naphtha and solar oil) heavy fuel oil (HFO) (dark marine diesel fuel) and high-quality asphalt and blank in China have been filled up.Be factory's minimum income that reaches 5,574 ten thousand yuan of increasing economic efficiency every year simultaneously. all gain everything and lose nothing in the people in state.
The preparing fuel oil by coal tar hydrogenation process using prefractionation upgrading, four parts of hydrogen manufacturing and shortening and fractionation are finished, when the present invention adopts these four parts at the same time, the utilization ratio of stock oil is improved, back and light oil are handled in the slagging-off that for the first time residual oil dewatered, in oily stock oil mix the coal system of system heavy gas oil oil fuel, wash carbolineum and return that to join stock oil technology be to have used for reference the petroleum products oil refining process, in oil refinery technology is combined with the Coal Chemical Industry refinery in the low oily temperature preparing fuel oil by coal tar hydrogenation technological process, its popularization finds the substitute energy of petroleum products to make positive contribution to alleviating China and world fuel oil anxiety and greatly developing the Coal Chemical Industry cause.
The specific embodiment of the present invention:
Embodiment 1:
Middle coalite tar hydrogenation production is light, the technology of heavy fuel oil (HFO) and high-quality asphalt, its composition comprises: filter, prefractionation, hydrofining, fractionation process, described prefractionation is that three mixed coal tar after filtering are entered preliminary fractionator, malleation removes by filter the solid particulate greater than 25 microns, tentatively remove the solid mechanical impurity, preliminary fractionator adopts negative-pressure operation, vacuum tightness is-0.05MPA cat head evacuation adopts low-pressure steam as power, non-condensable gas in the prefractionation cat head return tank is extracted out, after water cooler is cooled to enter skimming tank and carry out three phase separation behind 40 degree in evacuation system, non-condensable gas enters atmosphere, part oil is delivered to tank field hydrogenating materials oil measure jar by the emptying oil pump, oily(waste)water is pumped into the sour water jar by oily(waste)water, oil 380-420 degree is in Modified Pitch Plant after the thermopolymerization at the bottom of the prefractionation Tata, come out of the stove, product is the high-quality modified pitch, upgrading oil after the prefractionation, in a prefractionation stock oil part comes back to cascade filtration after the extraction of 360-380 degree cut after, return and join stock oil, another part goes hydrogenation reaction stock oil basin to wait for hydrogenation.
The technology of light, heavy fuel oil (HFO) of coalite tar hydrogenation production and high-quality asphalt in described, described filtration are with light oil, middle oil and residual oil proportionally 1: 6: 3-1: mixed coal tar was by the filtration of efficient centrifugal strainer in 20: 10 three.
The technology of light, heavy fuel oil (HFO) of coalite tar hydrogenation production and high-quality asphalt in described, described hydrofining are that hydrogenating desulfurization, hydrodenitrification, hydrogenation deoxidation, hydrogenation of olefins, aromatic hydrogenation are fullly closed, hydrocracking, hydrodemetallation (HDM), condensation reaction.
The production of coalite tar hydrogenation is light in described, the technology of heavy fuel oil (HFO) and high-quality asphalt, described fractionation process is to enter separation column after the low branch oil that refining reaction partly comes is spent through heat exchange to 275, cat head oil gas enters separation column top return tank and carries out the oil gas water three phase separation after the condensation of separation column air cooler is cooled to 40 degree, the gas that flash distillation is come out drains into the fuel gas pipe network, sulfur-bearing contains the powerless sour water jar of ammonia sewage, an oil phase part is as trim the top of column, a part is removed stabilizer tower as thick gas and oil, diesel oil segmentation extraction at the bottom of the tower: a part is made the stabilizer reboiler thermal source and is added separation column through reboiler furnace, another part is cooled to 40 degree through heat exchange, and to go to the tank field be coal system light-weight fuel oil, going to the tank field greater than diesel oil at the bottom of the tower of 350 degree through heat exchange to 50 degree is that coal system heavy fuel oil (HFO) is a heavy gas oil, thick gas and oil enters further rectifying behind the stabilizer tower, obtains petroleum naphtha.
Claims (5)
1. the production of coalite tar hydrogenation is light in one kind, the technology of heavy fuel oil (HFO) and high-quality asphalt, its composition comprises: filter, prefractionation, hydrofining, fractionation process, it is characterized in that: solid mechanical impurity and the water greater than 50 microns is removed in the centrifuging of three mixed coal tar process, and then the process malleation removes by filter the solid particulate greater than 25 microns, two-step approach enters preliminary fractionator after removing the solid mechanical impurity, preliminary fractionator adopts negative-pressure operation, vacuum tightness is-0.05MPA cat head evacuation adopts low-pressure steam as power, non-condensable gas in the prefractionation cat head return tank is extracted out, after water cooler is cooled to enter skimming tank and carry out three phase separation behind 40 degree in evacuation system, non-condensable gas enters atmosphere, part oil is delivered to tank field hydrogenating materials oil measure jar by the emptying oil pump, oily(waste)water is pumped into the sour water jar by oily(waste)water, oil 380-420 degree is in Modified Pitch Plant after the thermopolymerization at the bottom of the prefractionation Tata, come out of the stove, product is the high-quality modified pitch, upgrading oil after the prefractionation, in a prefractionation stock oil part comes back to cascade filtration after the extraction of 360-380 degree cut after, return and join stock oil, another part goes hydrogenation reaction stock oil basin to wait for hydrogenation.
2. the technology of light, heavy fuel oil (HFO) of coalite tar hydrogenation production and high-quality asphalt in according to claim 1 is characterized in that: described filtration is with light oil, middle oil and residual oil proportionally 1: 6: 3-1: mixed coal tar was by the filtration of efficient centrifugal strainer in 20: 10 three.
3. the technology of light, heavy fuel oil (HFO) of coalite tar hydrogenation production and high-quality asphalt in according to claim 1 and 2 is characterized in that: described hydrofining is that hydrogenating desulfurization, hydrodenitrification, hydrogenation deoxidation, hydrogenation of olefins, aromatic hydrogenation are fullly closed, hydrocracking, hydrodemetallation (HDM), condensation reaction.
4. the production of coalite tar hydrogenation is light in according to claim 1 and 2, the technology of heavy fuel oil (HFO) and high-quality asphalt, it is characterized in that: described fractionation process is to enter separation column after the low branch oil that refining reaction partly comes is spent through heat exchange to 275, cat head oil gas enters separation column top return tank and carries out the oil gas water three phase separation after the condensation of separation column air cooler is cooled to 40 degree, the gas that flash distillation is come out drains into the fuel gas pipe network, sulfur-bearing contains the powerless sour water jar of ammonia sewage, an oil phase part is as trim the top of column, a part is removed stabilizer tower as thick gas and oil, diesel oil segmentation extraction at the bottom of the tower: a part is made the stabilizer reboiler thermal source and is added separation column through reboiler furnace, another part is cooled to 40 degree through heat exchange, and to go to the tank field be coal system light-weight fuel oil, going to the tank field greater than diesel oil at the bottom of the tower of 350 degree through heat exchange to 50 degree is that coal system heavy fuel oil (HFO) is a heavy gas oil, thick gas and oil enters further rectifying behind the stabilizer tower, obtains petroleum naphtha.
5. the production of coalite tar hydrogenation is light in according to claim 3, the technology of heavy fuel oil (HFO) and high-quality asphalt, it is characterized in that: described fractionation process is to enter separation column after the low branch oil that refining reaction partly comes is spent through heat exchange to 275, cat head oil gas enters separation column top return tank and carries out the oil gas water three phase separation after the condensation of separation column air cooler is cooled to 40 degree, the gas that flash distillation is come out drains into the fuel gas pipe network, sulfur-bearing contains the powerless sour water jar of ammonia sewage, an oil phase part is as trim the top of column, a part is removed stabilizer tower as thick gas and oil, diesel oil segmentation extraction at the bottom of the tower: a part is made the stabilizer reboiler thermal source and is added separation column through reboiler furnace, another part is cooled to 40 degree through heat exchange, and to go to the tank field be coal system light-weight fuel oil, going to the tank field greater than diesel oil at the bottom of the tower of 350 degree through heat exchange to 50 degree is that coal system heavy fuel oil (HFO) is a heavy gas oil, thick gas and oil enters further rectifying behind the stabilizer tower, obtains petroleum naphtha.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810064451 CN101575537B (en) | 2008-05-06 | 2008-05-06 | Process for producing light and heavy fuel oil and high-quality asphalt by hydrogenating coal tar at medium and low temperature |
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| CN 200810064451 CN101575537B (en) | 2008-05-06 | 2008-05-06 | Process for producing light and heavy fuel oil and high-quality asphalt by hydrogenating coal tar at medium and low temperature |
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| CN101575537A true CN101575537A (en) | 2009-11-11 |
| CN101575537B CN101575537B (en) | 2013-06-26 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892065A (en) * | 2010-01-10 | 2010-11-24 | 何巨堂 | Coal tar processing method |
| CN101928594A (en) * | 2010-09-30 | 2010-12-29 | 长岭炼化岳阳工程设计有限公司 | Method for removing impurities from coal tar heavy oil |
| CN102002385A (en) * | 2010-12-07 | 2011-04-06 | 上海蓝科石油化工有限公司 | Device and method for separating residue from catalytic cracking oil slurry |
| CN104388120A (en) * | 2014-07-23 | 2015-03-04 | 山东恒导石油化工股份有限公司 | Resource-utilization selective hydrogenation technology for organic heat carrier |
| US9222034B2 (en) | 2013-11-19 | 2015-12-29 | Uop Llc | Process for removing a product from coal tar |
| CN111826188A (en) * | 2020-07-07 | 2020-10-27 | 鞍钢化学科技有限公司 | Raw material asphalt for carbon-based new material and production process thereof |
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| CN1500853A (en) * | 2002-11-18 | 2004-06-02 | 中唯炼焦技术国家工程研究中心有限责 | Oil for fuel preparation modified from coke tar refuse in cokeoven plant and preparing method thereof |
| CN1597866A (en) * | 2004-07-30 | 2005-03-23 | 山西东辉煤焦化集团有限公司 | Process for producing chemical industry products and fuel oil from coal tar |
| CN1693190A (en) * | 2005-04-08 | 2005-11-09 | 中钢集团鞍山热能研究院 | Method for mfg. particle active carbon and light coal tar by tar dregs |
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2008
- 2008-05-06 CN CN 200810064451 patent/CN101575537B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1500853A (en) * | 2002-11-18 | 2004-06-02 | 中唯炼焦技术国家工程研究中心有限责 | Oil for fuel preparation modified from coke tar refuse in cokeoven plant and preparing method thereof |
| CN1597866A (en) * | 2004-07-30 | 2005-03-23 | 山西东辉煤焦化集团有限公司 | Process for producing chemical industry products and fuel oil from coal tar |
| CN1693190A (en) * | 2005-04-08 | 2005-11-09 | 中钢集团鞍山热能研究院 | Method for mfg. particle active carbon and light coal tar by tar dregs |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101892065A (en) * | 2010-01-10 | 2010-11-24 | 何巨堂 | Coal tar processing method |
| CN101892065B (en) * | 2010-01-10 | 2013-08-28 | 何巨堂 | Coal tar processing method |
| CN101928594A (en) * | 2010-09-30 | 2010-12-29 | 长岭炼化岳阳工程设计有限公司 | Method for removing impurities from coal tar heavy oil |
| CN102002385A (en) * | 2010-12-07 | 2011-04-06 | 上海蓝科石油化工有限公司 | Device and method for separating residue from catalytic cracking oil slurry |
| CN102002385B (en) * | 2010-12-07 | 2014-08-06 | 上海蓝科石化工程技术有限公司 | Device and method for separating residue from catalytic cracking oil slurry |
| US9222034B2 (en) | 2013-11-19 | 2015-12-29 | Uop Llc | Process for removing a product from coal tar |
| CN104388120A (en) * | 2014-07-23 | 2015-03-04 | 山东恒导石油化工股份有限公司 | Resource-utilization selective hydrogenation technology for organic heat carrier |
| CN104388120B (en) * | 2014-07-23 | 2016-08-17 | 山东恒导石油化工股份有限公司 | Organic heat carrier recycling process for selective hydrogenation |
| CN111826188A (en) * | 2020-07-07 | 2020-10-27 | 鞍钢化学科技有限公司 | Raw material asphalt for carbon-based new material and production process thereof |
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| CN101575537B (en) | 2013-06-26 |
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Application publication date: 20091111 Assignee: Qitaihe Baotailong Shengmai Coal Chemical Co., Ltd. Assignor: Mou Yanchun Contract record no.: 2013230001782 Denomination of invention: Process for producing light and heavy fuel oil and high-quality asphalt by hydrogenating coal tar at medium and low temperature Granted publication date: 20130626 License type: Exclusive License Record date: 20130906 |
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