CN106905998A - A kind of refining altogether and coal pyrolysis integral process - Google Patents
A kind of refining altogether and coal pyrolysis integral process Download PDFInfo
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- CN106905998A CN106905998A CN201710170476.3A CN201710170476A CN106905998A CN 106905998 A CN106905998 A CN 106905998A CN 201710170476 A CN201710170476 A CN 201710170476A CN 106905998 A CN106905998 A CN 106905998A
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- coal
- oil
- tar
- pyrolysis
- semicoke
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G49/00—Treatment of hydrocarbon oils, in the presence of hydrogen or hydrogen-generating compounds, not provided for in a single one of groups C10G45/02, C10G45/32, C10G45/44, C10G45/58 or C10G47/00
- C10G49/10—Treatment of hydrocarbon oils, in the presence of hydrogen or hydrogen-generating compounds, not provided for in a single one of groups C10G45/02, C10G45/32, C10G45/44, C10G45/58 or C10G47/00 with moving solid particles
- C10G49/12—Treatment of hydrocarbon oils, in the presence of hydrogen or hydrogen-generating compounds, not provided for in a single one of groups C10G45/02, C10G45/32, C10G45/44, C10G45/58 or C10G47/00 with moving solid particles suspended in the oil, e.g. slurries
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G2300/00—Aspects relating to hydrocarbon processing covered by groups C10G1/00 - C10G99/00
- C10G2300/10—Feedstock materials
- C10G2300/1037—Hydrocarbon fractions
Abstract
A kind of refining altogether and coal pyrolysis integral process, using the middle coalite tar of the full cut produced by coal pyrolysis as one of charging of coal state bed hydroprocessing device in common sweetening process, accounting≤80wt% of the middle coalite tar of the full cut in slurry bed system feedstock oil, one of or the oily charging as coal state bed hydroprocessing device in sweetening process altogether of light fraction of middle coalite tar, the boiling point of the light fraction oil is not higher than 450 DEG C, and the ratio that the light fraction oil accounts for charge raw material oil is unrestricted.The invention provides a kind of coupling technique refined oil with Coal Chemical Industry, the technology, with common refining and pyrolysis of coal technology as core, forms the clean and effective processing technology of crude oil and coal with crude oil and coal as raw material.
Description
Technical field
The present invention relates to a kind of refining altogether and coal pyrolysis integral process, belong to petrochemical industry and coal chemical technology.
Background technology
As the fast development of China's economic and automobile consumption rapidly increase, the petroleum consumption of China is stepped up, closely
Also reduced due to economic slowdown in growth, crude oil consumption speedup within 2 years, but the present and the future quite a long period, China oil
Consumption figure will also keep growing trend.China's oil external dependence degree constantly rises, in 2015 more than 60%, if from now on
Major Strategic adjustment is not done, can also further be improved, all formd to Chinese energy safety, economic security or even military security
Threaten.The endowment of resources of China is that the few coal of oil is more, and China Geological Survey Bureau's latest survey result shows that China's energy minerals are possessed
Economy can reserves convert into 215,000,000,000 tons of oil equivalents, wherein, coal accounts for 97%, oil 1%, natural gas 1.5%, uranium ore less than 1%,
One coal is solely big, unbalance of structure.Coal production product oil and chemicals are cleanly and efficiently utilized, is the necessarily choosing of China's energy development
Select, Chinese energy safety can be ensured.
Based on above-mentioned situation, common refining technology and low-temperature pyrolysis of coal technology are developed, it is therefore an objective to realize crude oil and coal
The clean and effective processing of charcoal.Refining technology is, with crude oil and coal as raw material, to be hydrogenated to core processing unit (plant) with slurry bed system and produce altogether
Ultra-clean oil product and aromatic hydrocarbons, process route is：Coal dust carries out swelling pretreatment in the residual oil after crude distillation, then with catalyst
It is mixed and made into coal；Coal adds hydrogen after heating up, in the high temperature and high pressure environment of slurry bed system combination unit, according to freedom
Base reaction mechanism, realizes that residual oil and coal dust become light fraction oil；Distillate again through fixed bed hydrogenation, catalytic reforming process at
Reason, ultimately produces the products such as gasoline, boat coal, diesel oil, aromatic hydrocarbons and liquefied gas.The pyrolysis of coal refers to continue coal under an inert atmosphere
It is heated to the complex process of a series of physical change and chemical reaction occurred during higher temperature.In the process, coal is handed over
The fracture of connection key, product restructuring and secondary response obtain the products such as gas (coal gas), liquid (tar and water) and solid (semicoke).
A feature of refining technology is that hydrogen consumption is high altogether, if using coal process for making hydrogen, water consume is high, using natural gas hydrogen preparation,
Gas consumption is big；The current urgent problem of low-temperature pyrolysis of coal is the Utilizing question of solid product semicoke, because pot
Stove there are certain requirements to the volatile matter of feed coal, and volatile matter is typically reduced to less than 10% after pyrolysis of coal, it is impossible to meet coal dust pot
Stove feeds.
The content of the invention
In order to solve the above problems, the present invention proposes a kind of refining altogether and coal pyrolysis integral process, by common sweetening process with
Coal pyrolysis technique combines, and concrete scheme is as follows：
A kind of refining altogether and coal pyrolysis integral process, it is characterised in that will be low in the full cut produced by coal pyrolysis
Used as one of charging of coal state bed hydroprocessing device in common sweetening process, the middle coalite tar of the full cut exists warm coal tar
In accounting≤80% (mass ratio) in slurry bed system feedstock oil, or the light fraction common sweetening process of oil conduct of middle coalite tar
One of charging of coal state bed hydroprocessing device, the boiling point of light fraction oil is not higher than 450 DEG C, the light fraction oil account for into
Expect that the ratio of feedstock oil is unrestricted.
Preferred coal tar mixing proportion is 15%-40%.
The middle coalite tar preferably refers to that coal is pyrolyzed produced coal tar at a temperature of no more than 1000 DEG C.
The water that preferred coal is produced in pyrolytic process as common sweetening process desalted water.
The synthesis gas that preferred coal is produced in pyrolytic process obtains hydrogen after treatment, and the hydrogen is used as common refining work
The raw material of skill.
Preferred coal pyrolysis produce semicoke, and coal state bed hydroprocessing technique institute oil-producing coal tar is combined and given birth in sweetening process together
Modified semicoke is produced, the volatile matter of modified semicoke is more than 10%.
Further preferred will carry out uniform stirring after semicoke grinding with the oily coal tar, in granulating and forming after condensation
It is modified semicoke, wherein oily coal tar accounts for 5-30wt% in modified semicoke.
The technology of the present invention effect：
Common refining and both pyrolytic process of coal organically are comprehensively utilized by the present invention, build refining altogether and pyrolysis of coal integration
Development model, improves the level of resources utilization, realizes the sustainable development of petrochemical industry and coal chemical industry, while reducing to import
The dependence of crude oil, lifts national energy security.Common refining technology and coal pyrolysis technology are combined, can farthest be played
The combined effect of two techniques：
1st, low-temperature pyrolysis of coal provides hydrogen to refine project altogether：The gas yield of low order low-temperature pyrolysis of coal is about 20%, coal gas
In can the active ingredient of hydrogen manufacturing reach more than 85%, wherein low-carbon (LC) hydro carbons be able to can be passed through by steam pyrolysis hydrogen making, CO
Conversion, purification hydrogen making, for common refining project provides hydrogen source.
2nd, low-temperature pyrolysis of coal provides industrial water to refine project altogether：During the water that low-order coal is produced in pyrolytic process includes coal
Moisture and the moisture (accounting for the 5% of air-dried basis coal) of pyrolytic reaction generation, although these water contain phenols and Ammonia material,
But can be directly used for deviating from crystal salt in common sweetening process, it is also possible at the technique by phenol recovery ammonia+biochemical treatment+advanced treating
Reason meets industrial water requirement.
3rd, low-temperature pyrolysis of coal tar provides feedstock oil to refine project altogether：Low-temperature pyrolysis of coal produces tar, and arene content is high, weight
Component intractability is big, can only be used as coking raw material, and economic benefit is low.Common refining feedstock oil is can serve as, because coal tar is to coal
Hydrogen supply capacity be not so good as residual oil, but, coal tar mixing proportion is generally 15%-40%, Huo Zhezhong to the swelling behavior of coal preferably
One of oily charging as coal state bed hydroprocessing device in sweetening process altogether of the light fraction of coalite tar, the light fraction
The boiling point of oil is not higher than 450 DEG C, and the ratio that the light fraction oil accounts for charge raw material oil is unrestricted, i.e., the upper limit can reach 100%.
Refining technology can make low-quality coal tar processing be the aromatic hydrocarbons and high-quality product oil of market shortage altogether, realize the efficient of coal tar
Utilize.
4th, the semicoke that common sweetening process can solve pyrolysis of coal utilizes problem：Refining technology institute oil-producing coal tar volatile matter is up to 50% altogether
More than, blend production modified semicoke in certain proportion with semicoke, semicoke flammability performance in the boiler can be improved, it is maximum
Degree ground plays combined effect, improves the value and added value of oily coal tar and semicoke.
The invention provides it is a kind of refine oil and Coal Chemical Industry coupling technique, the technology with crude oil and coal as raw material, with altogether
Refining and pyrolysis of coal technology are core, form the clean and effective processing technology of crude oil and coal.The present invention can farthest send out
Wave the combination advantage of common refining and pyrolytic process of coal：Using the raw coke oven gas of pyrolysis of coal generation as hydrogen feedstock, for common refining project is provided
Hydrogen；The water that pyrolysis of coal is produced reduces fresh water consumption amount as the water source of common refining project；Refining project can add in high yield altogether
The coal tar that work pyrolysis of coal is produced；Refining institute's oil-producing coal tar is blended with the semicoke of pyrolysis of coal altogether, it is possible to resolve the Utilizing question of semicoke.
The present invention is not only as the product of pyrolysis of coal have found utilization orientation, while also have found a kind of efficient oily coal being total to
The technique of refining, it is ground-breaking can not to be used for the coal tar that oily coal refines altogether in the prior art and make it in oily coal by changing thinking
Effect has been given play in mixing, more valuable utilization has been realized.
Brief description of the drawings
Fig. 1 is the process chart of the embodiment of the present invention.
Specific embodiment
In order to preferably explain the present invention, the present invention is further explained with reference to specific embodiment.
Embodiment 1
1st, raw material：With crude oil and bituminous coal as raw material is refined altogether, its property is shown in Tables 1 and 2, with lignite as pyrolysis feed, its property
Matter is shown in Table 3.
The fundamental property table of the crude oil of table 1
The fundamental property table of the common refining coal of table 2
The pyrolyzing coal basic nature index of table 3
2nd, technological process (as shown in Figure 1)：
(1) coal pyrolysis：Coal is carried out into low temperature pyrogenation, the middle coalite tar for accounting for feed coal 10%, coal are produced in pyrolysis
Tar property is shown in Table 4；Product accounts for the coal gas of feed coal 20wt%, and (hydrogen accounts for 60vol% in gas, and carbon monoxide accounts for 20vol%, two
Carbonoxide accounts for 10vol%, and remaining is the lighter hydrocarbons such as C1, C2), by the Hydrogen Separation in coal gas out, remaining CO and hydro carbons are through becoming
Change technique productions hydrogen；The water that by-product accounts for feed coal 20% is used as desalted water；Product accounts for the semicoke of charging 50%.
Coalite tar property in table 4
(2) refining altogether：Crude oil distills through atmospheric distillation plant, fractionates out naphtha, kerosene and atmospheric residue fraction, also has less
The dry gas and liquefied gas of amount.It is 1 by pyrolysis of coal institute producing coal tar and reduced crude:3 ratio mixing, then will be mixed heavy
Oil is with coal dust according to 0.85:1 ratio carries out swelling treatment and coal is obtained, and hydrogen and catalyst is added, into slurry bed system
Hydrogenation plant.Slurry bed system hydrogenation plant produces naphtha cut, diesel oil distillate, dry gas and liquefied gas；Diesel oil distillate is sent into
Fixed bed device (hydro-upgrading unit), generates naphtha cut, kerosene and diesel product herein；Atmospheric unit, slurry bed system dress
Put the naphtha of production, dry gas, liquefied gas and enter light ends unit, the naphtha completed herein in desulfurization and gas recovery evaporates
Dividing for task；The naphtha of light ends unit production and the naphtha point produced with fixed bed hydrogenation device enter catalytic reforming
The sour gas of device (containing Aromatics Extractive Project) production aromatic hydrocarbons and high-knock rating gasoline, lighter hydrocarbons recovery and fixed bed device is returned into sulphur
Receiving apparatus (containing sewage stripping and solvent reclamation) Recovered sulphur, molten sulfur is used as vulcanizing agent, and remainder send as sulphur
Go out device.
On the basis of crude oil, coal and tar, product oil adds aromatics yield to be 70.34%, and oily coal tar yield is 18%, liquid
It is 3.4% to change gas yield, and liquid product mix and leading indicator see the table below：
(3) institute's oil-producing coal tar will altogether be refined with semicoke according to 15:85 ratio mixed, cooled down, granulate and be made modified half
It is burnt.
The oily coal tar of slurry bed apparatus production is used after shaping as power or hydrogen feedstock.
Embodiment 2
Other technological processes of the present embodiment and raw material are same as Example 1, but coal tar is first fractionated, and its lightweight is evaporated
Divide oil as one of charging of coal state bed hydroprocessing device in sweetening process altogether, the boiling point of the light fraction oil is not higher than 450
DEG C, the ratio that the light fraction oil accounts for charge raw material oil is 85%.Because the light fraction oil after fractionation has more preferable hydrogen supply
Ability, therefore additional proportion can be more than only using coal tar as charging.Finished product oily yield is approached with embodiment 1.
The present invention preferably specific embodiment is the foregoing is only, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Change of such as specific adding proportion in the range of, should all be included within the scope of the present invention.Therefore, guarantor of the invention
Shield scope should be defined by the protection domain of claims.
Claims (7)
1. it is a kind of to refine and coal pyrolysis integral process altogether, it is characterised in that by the middle low temperature of the full cut produced by coal pyrolysis
, used as one of charging of coal state bed hydroprocessing device in common sweetening process, the middle coalite tar of the full cut is in slurry for coal tar
Coal state in accounting≤80wt% in state bed feedstock oil, or the light fraction common sweetening process of oil conduct of middle coalite tar
One of charging of bed hydroprocessing device, the boiling point of the light fraction oil is not higher than 450 DEG C, and the light fraction oil accounts for charge raw material oil
Ratio it is unrestricted.
2. technique according to claim 1, it is characterised in that coal tar mixing proportion is 15%-40%.
3. technique according to claim 1, it is characterised in that the middle coalite tar refers to coal no more than 1000 DEG C
At a temperature of be pyrolyzed produced coal tar.
4. technique according to claim 1, it is characterised in that the water that coal is produced in pyrolytic process is used as common sweetening process
Desalted water.
5. technique according to claim 1, it is characterised in that the synthesis gas that coal is produced in pyrolytic process is after treatment
Obtain hydrogen, the hydrogen as common sweetening process raw material.
6. technique according to claim 1, it is characterised in that coal pyrolysis produce semicoke coal state in sweetening process together
Bed hydroprocessing technique institute oil-producing coal tar combines production modified semicoke, and the volatile matter of modified semicoke is more than 10%.
7. technique according to claim 6, it is characterised in that will the semicoke grind after carried out uniformly with the oily coal tar
Stirring, in granulating and forming is modified semicoke after condensation, wherein oily coal tar accounts for 5-30wt% in modified semicoke.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105038853A (en) * | 2015-06-29 | 2015-11-11 | 陕西延长石油（集团）有限责任公司 | Method for utilizing FCC slurry and coal to co-refine oil |
| CN105400537A (en) * | 2015-10-23 | 2016-03-16 | 北京中科诚毅科技发展有限公司 | Method for processing oil and coal by using mixing refining technology |
| CN106433775A (en) * | 2016-12-20 | 2017-02-22 | 煤炭科学技术研究院有限公司 | Coal and oil coprocessing method and device |
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2017
- 2017-03-21 CN CN201710170476.3A patent/CN106905998B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105038853A (en) * | 2015-06-29 | 2015-11-11 | 陕西延长石油（集团）有限责任公司 | Method for utilizing FCC slurry and coal to co-refine oil |
| CN105400537A (en) * | 2015-10-23 | 2016-03-16 | 北京中科诚毅科技发展有限公司 | Method for processing oil and coal by using mixing refining technology |
| CN106433775A (en) * | 2016-12-20 | 2017-02-22 | 煤炭科学技术研究院有限公司 | Coal and oil coprocessing method and device |
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