CN104910944B - Coal tar desalinating process - Google Patents
Coal tar desalinating process Download PDFInfo
- Publication number
- CN104910944B CN104910944B CN201510316046.9A CN201510316046A CN104910944B CN 104910944 B CN104910944 B CN 104910944B CN 201510316046 A CN201510316046 A CN 201510316046A CN 104910944 B CN104910944 B CN 104910944B
- Authority
- CN
- China
- Prior art keywords
- coal tar
- water
- dehydrated
- particle diameter
- microns
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000011280 coal tar Substances 0.000 title claims abstract description 42
- 238000000034 method Methods 0.000 title claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 230000018044 dehydration Effects 0.000 claims abstract description 16
- 238000006297 dehydration reaction Methods 0.000 claims abstract description 16
- 150000003839 salts Chemical class 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims abstract description 12
- 239000007790 solid phase Substances 0.000 claims abstract description 12
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000012071 phase Substances 0.000 claims description 4
- 238000011033 desalting Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 238000009938 salting Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 4
- 239000003245 coal Substances 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 239000002893 slag Substances 0.000 description 5
- 238000010612 desalination reaction Methods 0.000 description 3
- 239000012266 salt solution Substances 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000011269 tar Substances 0.000 description 1
- 239000002569 water oil cream Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C1/00—Working-up tar
- C10C1/005—Working-up tar by mixing two or more coaltar fractions
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10C—WORKING-UP PITCH, ASPHALT, BITUMEN, TAR; PYROLIGNEOUS ACID
- C10C1/00—Working-up tar
- C10C1/19—Working-up tar by thermal treatment not involving distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
The invention belongs to coal chemical industry technology field, and in particular to a kind of coal tar desalinating process.Desalted water is noted into coal tar, it is then heated to 85~95 DEG C, one-level dehydration is carried out by horizontal screw centrifuge again, remove the solid phase that particle diameter is more than 50 microns, and be dehydrated to water content below 2%, carry out two level dehydration, solid phase of the removing particle diameter between 5 50 microns finally by disk plate centrifuge, and be dehydrated to water content below 0.5%, the coal tar after being disposed carries out hydrotreating.Desalting effect of the present invention is good, and salt rejection rate is more than 99.5%, stable operation；Temperature of the present invention is lower than electro-desalting temperature, easy to operate, salt will not be caused to decompose；Avoid the problem of traditional technology of electric de-salting oil-water interfaces separation is unclear；The problem of incrustation being settled present invention also avoids electrical desalter.
Description
Technical field
The invention belongs to coal chemical industry technology field, and in particular to a kind of coal tar desalinating process.
Background technology
Coal tar saliferous is very harmful to producing and processing, and a small amount of salt is suspended in oil with lenticular, and heavy corrosion is set
It is standby, or crystallize and separate out on the tower tray of atmospheric tower top, tower tray is blocked, causes the separation of weight component unclear；Secondly in boiler tube and
In heat transmission equipment, saline deposit fouling on tube wall, influence to conduct heat, while make the boiler tube lost of life, pressure drop increase, seriously
When can block boiler tube or heat exchanger, cause device to stop work；3rd is influence of the heavy metal to follow up device, and metallic sodium is to catalysis
The lattice of agent has destruction, easily catalyst poisoning is caused permanent deactivation.
Traditional desalinating process is technology of electric de-salting, and coal tar enters electrical desalter, small water droplet is become flood by electrode
Drop, profit layering, then draining.Electro-desalting temperature needs to operate at 110-140 DEG C, and temperature is too high to cause salt to decompose,
Temperature is too low to cause efficiency low；Traditional technology of electric de-salting, oil-water emulsion layer easily cause oil-water interfaces separation unclear, operation
It is not easy stabilization；Impurity of the electrical desalter in oil during long-term use settles incrustation in electrical desalter, and operation can be caused to imitate
Fruit is deteriorated.
The content of the invention
In view of the shortcomings of the prior art, it is an object of the invention to provide a kind of coal tar desalinating process, desalting effect is good, behaviour
Stablize.
Coal tar desalinating process of the present invention, desalted water is noted into coal tar, is then heated to 85~95 DEG C, then lead to
Cross horizontal screw centrifuge and carry out one-level dehydration, two level dehydration is carried out finally by disk plate centrifuge.
Wherein：Coal tar is this area routine coal tar.
Desalted water is first noted into coal tar, the volume ratio that desalted water accounts for coal tar is 3~5%, if the excessive coal of the amount of water
Tar can emulsify excessively, if the amount of water is very few, the salt that cannot be completely dissolved in coal tar.
Desalted water is noted into coal tar, is then heated to 85~95 DEG C, is preferably heated to 90 DEG C, heating is preferably with heating
Device is adjusted by automatic control system, and the salt that heating can promote to be suspended in coal tar dissolves in water, reduces coal tar
Viscosity, promote light, heavy phase separation, when temperature is too high, a large amount of gasification phenomenons, when the temperature is too low, salt dissolving occur in water
Effect is poor, viscosity is high, the inferior separating effect of weight phase.
One-level dehydration is carried out by horizontal screw centrifuge, horizontal screw centrifuge is Three-phase decanter centrifuge, horizontal screw centrifuge rotating speed
For 3000-3200r/min, preferably rotating speed is 3100r/min, and removing particle diameter is more than 50 microns of solid phase (slag), and is dehydrated to water
Below content 2%, horizontal screw centrifuge is commercially available prod, and during centrifugation, solid phase comes out from the outlet on centrifuge wall, and light materials are in
Between, heavy substance is on both sides.
Two level dehydration is carried out by disk plate centrifuge, disk plate centrifuge is three-phase disk plate centrifuge, disk plate centrifuge rotating speed
For 4000-4100r/min, preferably rotating speed is 4000r/min, solid phase of the removing particle diameter between 5-50 microns, and is dehydrated to water
Below content 0.5%.Two-stage dehydration can remove saliferous moisture, substitute original technology of electric de-salting.
In summary, the present invention has advantages below：
(1) the coal tar desalting effect after present invention process is handled is good, and salt rejection rate is more than 99.5%, stable operation.
(2) present invention first notes appropriate desalted water into coal tar, is then heated to thermophilic, then with horizontal screw centrifuge and dish
Piece centrifuge carries out two-stage dehydration, is dehydrated de- slag and completes simultaneously, technique advantages of simple, and the coal tar salt content after processing is low.
(3) temperature of the present invention is lower than electro-desalting temperature, easy to operate, salt will not be caused to decompose；Avoid traditional electro-desalting
The problem of separation of technique oil-water interfaces is unclear；The problem of incrustation being settled present invention, avoiding electrical desalter.
Embodiment
With reference to embodiment, the present invention will be further described.
Embodiment 1
Desalted water is noted into a kind of coal tar of conventional commercial, the volume ratio that desalted water accounts for coal tar is 3%, and heating adds de-
Then coal tar after salt solution carries out one-level dehydration, horizontal screw centrifuge rotating speed is 3100r/ to 90 DEG C by horizontal screw centrifuge
Min, removing particle diameter are more than 50 microns of solid phase (slag), and are dehydrated to water content below 2%, then carry out two by disk plate centrifuge
Level dehydration, disk plate centrifuge rotating speed is 4000r/min, solid phase of the removing particle diameter between 5-50 microns, and is dehydrated to water content
Less than 0.5%, the coal tar after being disposed is tested, salt rejection rate is 99.9% after above-mentioned processing, after desalination
Coal tar carries out further hydrotreating.
Embodiment 2
Desalted water is noted into a kind of coal tar of conventional commercial, the volume ratio that desalted water accounts for coal tar is 4%, and heating adds de-
Then coal tar after salt solution carries out one-level dehydration, horizontal screw centrifuge rotating speed is 3000r/ to 85 DEG C by horizontal screw centrifuge
Min, removing particle diameter are more than 50 microns of solid phase (slag), and are dehydrated to water content below 2%, then carry out two by disk plate centrifuge
Level dehydration, disk plate centrifuge rotating speed is 4000r/min, solid phase of the removing particle diameter between 5-50 microns, and is dehydrated to water content
Less than 0.5%, the coal tar after being disposed is tested, salt rejection rate is 99.6% after above-mentioned processing, after desalination
Coal tar carries out further hydrotreating.
Embodiment 3
Desalted water is noted into a kind of coal tar of conventional commercial, the volume ratio that desalted water accounts for coal tar is 5%, and heating adds de-
Then coal tar after salt solution carries out one-level dehydration, horizontal screw centrifuge rotating speed is 3200r/ to 95 DEG C by horizontal screw centrifuge
Min, removing particle diameter are more than 50 microns of solid phase (slag), and are dehydrated to water content below 2%, then carry out two by disk plate centrifuge
Level dehydration, disk plate centrifuge rotating speed is 4100r/min, solid phase of the removing particle diameter between 5-50 microns, and is dehydrated to water content
Less than 0.5%, the coal tar after being disposed is tested, salt rejection rate is 99.7% after above-mentioned processing, after desalination
Coal tar carries out further hydrotreating.
Claims (1)
- A kind of 1. coal tar desalinating process, it is characterised in that：Desalted water is noted into the coal tar of conventional commercial, desalted water accounts for coal tar The volume ratio of oil is 3%, and then the coal tar after heating plus desalted water carries out one-level dehydration to 90 DEG C by horizontal screw centrifuge, crouch Screw centrifuge rotating speed is 3100 r/min, and removing particle diameter is more than 50 microns of solid phase, and is dehydrated to water content below 2%, then passes through Disk plate centrifuge carries out two level dehydration, and disk plate centrifuge rotating speed is 4000 r/min, removes particle diameter consolidating between 5-50 microns Phase, and be dehydrated to water content below 0.5%, the salt rejection rate of the coal tar after being disposed is 99.9%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510316046.9A CN104910944B (en) | 2015-06-10 | 2015-06-10 | Coal tar desalinating process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510316046.9A CN104910944B (en) | 2015-06-10 | 2015-06-10 | Coal tar desalinating process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104910944A CN104910944A (en) | 2015-09-16 |
| CN104910944B true CN104910944B (en) | 2018-03-20 |
Family
ID=54080396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510316046.9A Active CN104910944B (en) | 2015-06-10 | 2015-06-10 | Coal tar desalinating process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104910944B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419836B (en) * | 2015-11-20 | 2017-12-22 | 长岭炼化岳阳工程设计有限公司 | Coal tar desalter and desalination process |
| CN108611112A (en) * | 2018-06-05 | 2018-10-02 | 陕西煤业化工集团神木天元化工有限公司 | The method and system of coal tar dehydration |
| CN108977222B (en) * | 2018-07-23 | 2021-04-16 | 国家能源投资集团有限责任公司 | Separation system and separation method for direct coal liquefaction oil residue |
| CN112779042B (en) * | 2019-11-06 | 2022-12-13 | 宝武碳业科技股份有限公司 | Production method of high-quality impregnating asphalt |
| CN114904323B (en) * | 2022-05-13 | 2024-03-01 | 江苏三吉利化工股份有限公司 | Furanol tar desalting device and desalting process |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4871443A (en) * | 1986-10-28 | 1989-10-03 | Rutgerswerke Ag | Novel method for extraction of salts from coal tar and pitches |
| CN101338207A (en) * | 2008-08-08 | 2009-01-07 | 上海奥韦通工程技术有限公司 | Dechlorination process for coal tar |
| CN101475818A (en) * | 2009-01-23 | 2009-07-08 | 华东理工大学 | Coal tar coupled rotational flow purification method and apparatus |
| CN103205272A (en) * | 2012-01-12 | 2013-07-17 | 易高环保能源研究院有限公司 | Method for production of purified coal tar pitch from high temperature coal tar |
-
2015
- 2015-06-10 CN CN201510316046.9A patent/CN104910944B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4871443A (en) * | 1986-10-28 | 1989-10-03 | Rutgerswerke Ag | Novel method for extraction of salts from coal tar and pitches |
| CN101338207A (en) * | 2008-08-08 | 2009-01-07 | 上海奥韦通工程技术有限公司 | Dechlorination process for coal tar |
| CN101475818A (en) * | 2009-01-23 | 2009-07-08 | 华东理工大学 | Coal tar coupled rotational flow purification method and apparatus |
| CN103205272A (en) * | 2012-01-12 | 2013-07-17 | 易高环保能源研究院有限公司 | Method for production of purified coal tar pitch from high temperature coal tar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104910944A (en) | 2015-09-16 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Coal tar desalination process Effective date of registration: 20190102 Granted publication date: 20180320 Pledgee: Qi Shang bank Limited by Share Ltd. Zichuan branch Pledgor: SHANDONG BAOTA NEW ENERGY CO.,LTD. Registration number: 2018370000241 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20201222 Granted publication date: 20180320 Pledgee: Qi Shang bank Limited by Share Ltd. Zichuan branch Pledgor: SHANDONG BAOTA NEW ENERGY Co.,Ltd. Registration number: 2018370000241 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Coal tar desalination process Effective date of registration: 20211018 Granted publication date: 20180320 Pledgee: Qi Shang bank Limited by Share Ltd. Zichuan branch Pledgor: SHANDONG BAOTA NEW ENERGY Co.,Ltd. Registration number: Y2021980010844 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20231226 Granted publication date: 20180320 Pledgee: Qi Shang bank Limited by Share Ltd. Zichuan branch Pledgor: SHANDONG BAOTA NEW ENERGY CO.,LTD. Registration number: Y2021980010844 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Coal tar desalination process Granted publication date: 20180320 Pledgee: Industrial and Commercial Bank of China Limited Zibo Zichuan sub branch Pledgor: SHANDONG BAOTA NEW ENERGY CO.,LTD. Registration number: Y2024980035974 |