CN103897727A - Ash-removing method for ash-containing hydrocarbon deeply-hydrogenated oil by washing - Google Patents
Ash-removing method for ash-containing hydrocarbon deeply-hydrogenated oil by washing Download PDFInfo
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- CN103897727A CN103897727A CN201410105300.6A CN201410105300A CN103897727A CN 103897727 A CN103897727 A CN 103897727A CN 201410105300 A CN201410105300 A CN 201410105300A CN 103897727 A CN103897727 A CN 103897727A
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Abstract
The invention discloses an ash-removing method for ash-containing hydrocarbon deeply-hydrogenated oil by washing, which is particularly suitable for a washing and ash-removing process of generated oil in an ash-containing coal tar deep-hydrogenating modifying process, wherein reaction effluent RP in the ash-containing hydrocarbon deep-hydrogenating process R and reaction effluent washing water RPW enter a high-pressure separator HPS for being separated into a high pressure separated gas, ash-containing high pressure separated water HPW-A and ash-containing high pressure separated oil HPL-A after being mixed; the ash-containing high pressure separated oil HPL-A and washing water W1 enter a low-pressure separator LPS for being separated into ash-removed low pressure separated oil LPL and ash-containing low pressure separated water W2 after being mixed; the ash-containing low pressure separated water is used as reaction effluent washing water RPW directly or after ash removal. On the condition that external water supply dosage is not increased, water-washing and ash-removing of the ash-containing high pressure separated oil HPL-A are realized.
Description
Technical field
The present invention relates to a kind ofly generate oily washing deashing method containing grey hydrocarbon deep hydrogenation; Say especially, the present invention relates to a kind ofly generate oily washing deashing method containing grey coal tar deep hydrogenation upgrading process.
Background technology
Below in conjunction with middle coalite tar deep hydrogenation upgrading process, the deliming problem of high score oil is described.
Middle coalite tar contains ash content conventionally, ash oontent scope is generally 0.005～0.3 % by weight, middle coalite tar is by after strainer deliming, the particle diameter of the ash content in after the deliming of penetration depth hydro-upgrading process R in coalite tar is less than 20 microns conventionally, in middle coalite tar deep hydrogenation upgrading process R, the overwhelming majority of these ash contents has entered in reaction effluent RP through reactor.Conventionally, after the described reaction effluent RP containing grey hydrocarbon deep hydrogenation process R mixes with reaction effluent washing water RPW, enter high-pressure separator HPS and be separated into high score gas, containing grey high score water HPW-A with containing grey high score oil HPL-A, entering light pressure separator LPS containing grey high score oil HPL-A is separated into containing low point of oily LPL of ash with containing low point of water LPW of ash, enter fractionation part conventionally main enrichment containing the ash content in low point of oily LPL of ash, follow in the highest liquid phase of logistics mid-boiling point, conventionally be present in low point of oil heat exchanger, at the bottom of the tower of the separation column of low point of oily still-process in oil, such as enrichment, follow in the last running product of fractionation part be conventional boiling point higher than the hydrogenation tail oil of 330 DEG C in, can enter with hydrogenation tail oil the hydrocracking reactor of hydrogenation tail oil, and form accumulation in reaction-fractionating system, be deposited in the beds in the hydrocracking reactor of hydrogenation tail oil, be deposited in the separation column of fractionation part, be deposited in pump inlet strainer.There is no at present middle coalite tar deep hydrogenation upgrading process high score profit wash-out ash or low point of profit wash-out ash bibliographical information.
Therefore, the first object of the present invention is to propose a kind ofly to generate oily washing deashing method containing grey hydrocarbon deep hydrogenation; The second object of the present invention is to propose a kind ofly to generate oily washing deashing method containing grey coal tar deep hydrogenation upgrading process.
Summary of the invention
The present invention is a kind of generates oily washing deashing method containing grey hydrocarbon deep hydrogenation, it is characterized in that comprising following steps:
After mixing with reaction effluent washing water RPW containing the reaction effluent RP of grey hydrocarbon deep hydrogenation process R, enter high-pressure separator HPS and be separated into high score gas, contain grey high score water HPW-A and contain grey high score oil HPL-A, after mixing with washing water W1 containing grey high score oil HPL-A, enter light pressure separator LPS and be separated into low point of oily LPL of deliming and contain low point of water W2 of ash, at least a portion contains low point of water W2 of ash as reaction effluent washing water RPW.
Feature of the present invention is further, is treated as low point of water W3 of deliming containing grey low point of water W2 by deliming, and low point of water W3 of at least a portion deliming uses as reaction effluent washing water RPW.
Preferably reaction effluent washing water RPW all comes low point of water W2 of self-contained ash or low point of water W3 of deliming.
The present invention is particularly suitable for processing containing grey coal tar, and the cetane value of the diesel oil distillate in coal tar deep hydrogenation upgrading reaction effluent RP is conventionally greater than 28, is generally greater than 36, more preferably greater than 40.
Embodiment
The composition of component of the present invention or concentration or content, unless stated otherwise, be weight basis value.
Of the present invention containing grey hydrocarbon deep hydrogenation process R, can sharp separation after its hydrogenation degree of depth should be enough to make mixes with washing water W1 containing grey high score oil HPL-A, utilize water and the grey feature that is inorganics, complete ash content to the enrichment in water.
Coal tar of the present invention can be the coal tar from pyrolysis of coal or coal generating gas process.Coal tar of the present invention can be coalite tar, coal-tar middle oil, coal-tar heavy oil cut and mixing oil thereof, and can be the coal tar that removes specific components removes the coal tar of phenol component or remove the coal tar of naphthalene component or remove the coal tar of anthracene component such as being selected from.。Because the processing condition of raw coal character, pyrolysis of coal or coal generating gas process all change within the specific limits, coal tar oil properties also changes within the specific limits, the processing condition of coal-tar heavy oil primary distillation process and product requirement also change within the specific limits, therefore the character of coal-tar heavy oil cut also changes within the specific limits.Hydrogenating materials coal tar oil properties of the present invention, conventional boiling point is generally 50～650 DEG C and is generally 60～550 DEG C, proportion is generally 0.91～1.22, water-content is generally 0.2～5.0%, and conventionally metal content is that 2～80PPm, sulphur content are 0.4～0.8%, nitrogen content is 0.4～1.8%, oxygen level is 0.4～8.0%.
The present invention is a kind of generates oily washing deashing method containing grey hydrocarbon deep hydrogenation, it is characterized in that comprising following steps:
After mixing with reaction effluent washing water RPW containing the reaction effluent RP of grey hydrocarbon deep hydrogenation process R, enter high-pressure separator HPS and be separated into high score gas, contain grey high score water HPW-A and contain grey high score oil HPL-A, after mixing with washing water W1 containing grey high score oil HPL-A, enter light pressure separator LPS and be separated into low point of oily LPL of deliming and contain low point of water W2 of ash, at least a portion contains low point of water W2 of ash as reaction effluent washing water RPW.
Feature of the present invention is further, is treated as low point of water W3 of deliming containing grey low point of water W2 by deliming, and low point of water W3 of at least a portion deliming uses as reaction effluent washing water RPW.Deashing method containing low point of water W2 of ash can adopt the methods such as filtration, centrifugation; Filtering material can be fibrous braid, metal wedge net, powder metal sintered meshwork, intermetallic Fe-Al compound filtering net, filter cloth bag etc.; While adopting centrifugal separation method, containing ash, low point of water W2 is separated into rich buck W21 and low point of water W3 of deliming, and rich buck W21 can directly with containing grey high score water HPW-A converge and handle together.
The present invention is particularly suitable for processing containing grey coal tar, and the cetane value of the diesel oil distillate in coal tar deep hydrogenation upgrading reaction effluent RP is conventionally greater than 28, is generally greater than 36, more preferably greater than 40.
Washing water W1 can be de-oxygenised water or de-salted water.
Washing water W1 can be or weak ammonia to reduce the H in low point of oily LPL of deliming
2s content, the amino molecule number in washing water W1 is generally 1～4 times containing the hydrogen sulfide molecule number in grey high score oil HPL-A.
Washing water W1 consumption, preferably makes to contain low point of water W2 of ash or low point of water W3 of deliming all as reaction effluent washing water RPW.
Preferably reaction effluent washing water RPW all comes low point of water W2 of self-contained ash or low point of water W3 of deliming.
Containing the deashing method of grey high score water HPW-A, be similar to the deashing method containing low point of water W2 of ash.
Claims (8)
1. generate an oily washing deashing method containing grey hydrocarbon deep hydrogenation, it is characterized in that comprising following steps:
After mixing with reaction effluent washing water RPW containing the reaction effluent RP of grey hydrocarbon deep hydrogenation process R, enter high-pressure separator HPS and be separated into high score gas, contain grey high score water HPW-A and contain grey high score oil HPL-A, after mixing with washing water W1 containing grey high score oil HPL-A, enter light pressure separator LPS and be separated into low point of oily LPL of deliming and contain low point of water W2 of ash, at least a portion contains low point of water W2 of ash as reaction effluent washing water RPW.
2. method according to claim 1, is characterized in that:
Reaction effluent washing water RPW all carrys out low point of water W2 of self-contained ash.
3. method according to claim 1, is characterized in that:
Washing water W1, for containing ammoniacal liquor.
4. method according to claim 1, is characterized in that:
Containing ash, low point of water W2 is treated as low point of water W3 of deliming by deliming, and low point of water W3 of at least a portion deliming uses as reaction effluent washing water RPW.
5. method according to claim 4, is characterized in that:
Reaction effluent washing water RPW is all from low point of water W3 of deliming.
6. according to the method described in claim 1 or 2 or 3 or 4 or 5, it is characterized in that:
Containing grey hydrocarbon, for containing grey coal tar, the cetane value of the diesel oil distillate in coal tar deep hydrogenation upgrading reaction effluent RP is greater than 28.
7. method according to claim 6, is characterized in that:
Containing grey hydrocarbon, for containing grey coal tar, the cetane value of the diesel oil distillate in coal tar deep hydrogenation upgrading reaction effluent RP is greater than 36.
8. method according to claim 7, is characterized in that:
Containing grey hydrocarbon, for containing grey coal tar, the cetane value of the diesel oil distillate in coal tar deep hydrogenation upgrading reaction effluent RP is greater than 40.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410105300.6A CN103897727A (en) | 2014-03-18 | 2014-03-18 | Ash-removing method for ash-containing hydrocarbon deeply-hydrogenated oil by washing |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410105300.6A CN103897727A (en) | 2014-03-18 | 2014-03-18 | Ash-removing method for ash-containing hydrocarbon deeply-hydrogenated oil by washing |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1670127A (en) * | 2004-03-19 | 2005-09-21 | 张宪 | Hydrogenation conversion method for coal tar and catalyst therefor |
| CN101838549A (en) * | 2010-06-17 | 2010-09-22 | 湖南长岭石化科技开发有限公司 | Method for preprocessing coal tar |
| CN101892065A (en) * | 2010-01-10 | 2010-11-24 | 何巨堂 | Coal tar processing method |
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2014
- 2014-03-18 CN CN201410105300.6A patent/CN103897727A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1670127A (en) * | 2004-03-19 | 2005-09-21 | 张宪 | Hydrogenation conversion method for coal tar and catalyst therefor |
| CN101892065A (en) * | 2010-01-10 | 2010-11-24 | 何巨堂 | Coal tar processing method |
| CN101838549A (en) * | 2010-06-17 | 2010-09-22 | 湖南长岭石化科技开发有限公司 | Method for preprocessing coal tar |
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Application publication date: 20140702 |