CN206298556U - A kind of system that coal tar is reclaimed in the oil gas from pyrolysis of coal - Google Patents
A kind of system that coal tar is reclaimed in the oil gas from pyrolysis of coal Download PDFInfo
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- CN206298556U CN206298556U CN201621432584.0U CN201621432584U CN206298556U CN 206298556 U CN206298556 U CN 206298556U CN 201621432584 U CN201621432584 U CN 201621432584U CN 206298556 U CN206298556 U CN 206298556U
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Abstract
A kind of the utility model reclaims coal tar system in providing oil gas from pyrolysis of coal, including：Washing unit, oil wash unit and separative element；The oil wash unit includes the second scrubbing tower and the 3rd scrubbing tower；The oil gas vent for washing unit is connected with the air inlet of the second scrubbing tower, and the gas outlet of the second scrubbing tower is connected with the air inlet of the 3rd scrubbing tower；The liquid outlet of the 3rd scrubbing tower is connected with the oil inlet of the second scrubbing tower and the oil inlet of the 3rd scrubbing tower respectively；The gas outlet of the 3rd scrubbing tower is connected with the charging aperture of separative element.The system architecture is simple, first using oil wash unit, and takes full advantage of the advantage washed with oil wash, can separate the dust in pyrolysis of coal oil gas and heavy coal tar, obtains the coal tar oil and gas of high-quality, and the system can be run steadily in the long term.
Description
Technical field
The utility model belongs to technical field of coal chemical industry, the system that coal tar is reclaimed in being related to a kind of oil gas from pyrolysis of coal,
More particularly to using washing and the system of oil wash recovery coal tar in a kind of oil gas from low-temperature pyrolysis of coal.
Background technology
Contain more dust and heavy component coal tar in the oil gas that fine coal low temperature pyrogenation is produced.Need to carry out it only
Change to obtain satisfactory coal gas and coal tar.Conventional purification technique is washing process at present, but washing oil gas technique
There is high energy consumption, wastewater flow rate is big, the shortcomings of oil quality difference.Also need to further study it.
CN 205323420U disclose a kind of pyrolysis of coal oil gas purifier.It includes charging aperture, sealed valve, visual
Window, one-level screen cloth, two grades of screen clothes, three-level screen cloth, fines outlet, filter material outlet, filtering oil gas vent and hydrocarbon filter nets,
Charging aperture is connected with pyrolysis oven offgas outlet, and charging aperture inclined downward is provided with one-level screen cloth, and one-level screen cloth lower section is provided with thin
Material outlet, one-level screen end lower section is provided with three-level screen cloth, and two grades of screen clothes, three are provided between one-level screen cloth and three-level screen cloth
Level screen cloth lower right is provided with hydrocarbon filter net, and hydrocarbon filter net upper right side is provided with filtering oil gas vent；Described charging
Sealed valve and visual windows are provided with mouthful.But its complex structure, and it is not effectively separated out heavy component coal tar
Oil.
Pyrolysis of coal oil gas containing dust and heavy component is carried out into oil wash, is had the disadvantage that：The coal tar for obtaining contains
Dust quantity is big, heavy components content is high, coal tar inferior quality, and big using difficulty, value is low.Therefore, generally not to coal heat
Solution oil gas carries out oil wash.
Utility model content
In view of the shortcomings of the prior art, the purpose of this utility model is to provide one kind to be reclaimed from pyrolysis of coal oil gas
The system of coal tar, the system architecture is simple, first using oil wash unit, and takes full advantage of the advantage washed with oil wash,
Dust in pyrolysis of coal oil gas and heavy coal tar can be separated, obtain the coal tar oil and gas of high-quality, and it is described
System can be run steadily in the long term.
It is that, up to this purpose, the utility model uses following technical scheme：
A kind of system that coal tar is reclaimed in oil gas from pyrolysis of coal, the system includes：
Washing unit, washes, oil gas and the first coal tar after being washed to pyrolysis of coal oil gas；
Oil wash unit, oil wash is carried out to the oil gas after washing, obtains the oil gas after oil wash and the second coal tar；
Separative element, is the 3rd coal tar oil and gas by the Oil-gas Separation after oil wash；
The oil wash unit includes the second scrubbing tower and the 3rd scrubbing tower；
The oil gas vent for washing unit is connected with the air inlet of the second scrubbing tower, and the gas outlet of the second scrubbing tower is washed with the 3rd
The air inlet for washing tower is connected；The liquid outlet of the 3rd scrubbing tower respectively with the oil inlet of the second scrubbing tower and entering for the 3rd scrubbing tower
Hydraulic fluid port is connected；
The gas outlet of the 3rd scrubbing tower is connected with the charging aperture of separative element.
The system that coal tar is reclaimed from pyrolysis of coal oil gas that the utility model is provided combines oil by by conventional washing
Wash, first the dust and heavy component in oil gas are separated by washing process, the oil gas after treatment carries out oil wash again, fully
The advantage of washing and oil wash is make use of, the coal tar oil and gas of the separation of high-quality can be obtained, connected by specific device,
So that washing and oil wash play the purpose of synergy, it is to avoid washing and the respective shortcoming of oil wash.
First coal tar is mainly heavy coal tar；Second coal tar is the coai-tar product for needing to collect；
3rd coal tar is light tar；The heavy coal tar is pyrolysis of coal oil gas straight in hot stage (400-700 DEG C)
Connect the tar for condensing out；Light tar is the tar that pyrolysis of coal oil gas is condensed out in cold stage (being less than 150 DEG C).Institute
Stating temperature can be different according to actual conditions.
Column plate is set in second scrubbing tower and the 3rd scrubbing tower.
Level height of the level height of the oil inlet of second scrubbing tower higher than the air inlet of the second scrubbing tower.To take
Obtain the purpose that countercurrent washing improves detersive efficiency.
The oil inlet of second scrubbing tower includes the first oil inlet and the second oil inlet, the level height of the first oil inlet
Higher than the level height of the second oil inlet, liquid outlet and the first oil inlet and the second oil inlet difference phase of the 3rd scrubbing tower
Even, second wash tower bottoms set the second coal tar oil export.Set two oil inlets to be not only able to fully wash oil gas, also
Stable operation can be played a part of by the temperature control of the oil gas after washing in certain scope.
Second coal tar oil export of the second scrubbing tower bottom is connected with storage tank, for reclaiming product.
The level height of the oil inlet of the 3rd scrubbing tower is higher than the level height of the air inlet of the 3rd scrubbing tower, to take
Obtain the purpose that countercurrent washing improves detersive efficiency.
3rd scrubbing tower also sets up the 3rd coal tar oil inlet, and the level height of the 3rd coal tar oil inlet is higher than the
The level height of the oil inlet of three scrubbing towers, the 3rd coal tar oil inlet is connected with the 3rd coal tar oil export of the separative element,
3rd coal tar oil export of separative element is also connected with storage tank.The setting of the 3rd coal tar oil inlet ensure that the 3rd washing
The temperature of tower separating effect and the oil gas of outflow is in certain scope.
The washing unit includes the first scrubbing tower and/or washing tank, and first scrubbing tower or washing tank set air inlet
Mouth and inlet, top set gas outlet, and bottom sets liquid outlet, the water of the level height higher than air inlet of the inlet
Flat height.Countercurrent washing is carried out in first scrubbing tower, the dust in pyrolysis of coal oil gas and heavy coal tar are washed out.
Column plate is not provided with first scrubbing tower.
The liquid outlet of first scrubbing tower can be connected with after-treatment device, for being carried out to the heavy coal tar for flowing out
Further post processing.
The separative element includes condensing unit and gas-liquid separation device, and gas outlet and the condensation of the 3rd scrubbing tower are filled
The charging aperture put is connected, and condensing unit discharging opening is connected with the charging aperture of gas-liquid separation device.
The condensing unit and gas-liquid separation device are equipment commonly used in the art, and those skilled in the art can be as needed
Selected.
Used as preferred technical scheme, the system includes the first scrubbing tower, the second scrubbing tower, the 3rd scrubbing tower, condensation
Device and gas-liquid separation device；
The first scrubbing tower top sets detergent inlet and the first air inlet, and top sets the first gas outlet, bottom
First coal tar oil export is set, and detergent inlet is located at the first air inlet top；
Second scrubbing tower bottom sets the second air inlet, and top sets the second gas outlet, and top sets the first oil inlet, in
Portion sets the second oil inlet, and bottom sets the second coal tar oil export；
3rd scrubbing tower bottom sets the 3rd air inlet, and the top of air inlet sets the 3rd oil inlet and the 3rd coal tar enters
Mouthful, top sets the 3rd gas outlet, and bottom sets liquid outlet；
Gas-liquid separator sets charging aperture, coal tar oil export, gas exit and wastewater outlet；
First gas outlet is connected with the second air inlet, and the second gas outlet is connected with the 3rd air inlet；Liquid outlet point
It is not connected with the first oil inlet, the second oil inlet and the 3rd oil inlet；
3rd gas outlet is connected by condensing unit with the charging aperture of gas-liquid separation device, the 3rd coal of gas-liquid separation device
Tar outlet is connected with the 3rd coal tar oil inlet and storage tank respectively；
The second coal tar oil export is connected with storage tank；
The first coal tar oil export connects settling tank, the delivery port of settling tank and wastewater outlet respectively with the first scrubbing tower
Detergent inlet be connected.Settling tank is also connected with after-treatment device, the post processing of the dust-laden coal tar for settling.
Compared with prior art, the beneficial effects of the utility model are：
The system that coal tar is reclaimed from pyrolysis of coal oil gas that the utility model is provided uses oil wash unit first, and fully
The advantage of washing and oil wash is make use of, the dust in pyrolysis of coal oil gas and heavy coal tar can be separated, obtain Gao Pin
The coal tar oil and gas of matter, dust content is trace in coal gas, and the tar content in coal gas is down to below 50ppm；Coal tar dust-laden
Amount is down to below 5-7% and particle is less than 20 μm, and oil product yield is 12-14%；
The system that coal tar is reclaimed from pyrolysis of coal oil gas that the utility model is provided can be run steadily in the long term.
Brief description of the drawings
Fig. 1 is the structure connection signal of the system that coal tar is reclaimed from fine coal low temperature pyrogenation oil gas that embodiment 1 is provided
Figure.
Wherein：1, the first scrubbing tower；2, the second scrubbing tower；3, the 3rd scrubbing tower；4, gas-liquid separation device；Arrow in figure
Represent the flow direction of fluid.
Specific embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by specific embodiment.
Embodiment 1
A kind of system that coal tar is reclaimed in the low temperature pyrogenation oil gas from fine coal, as shown in Figure 1.The system is washed including first
Wash tower 1, the second scrubbing tower 2, the 3rd scrubbing tower 3, condensing unit and gas-liquid separation device 4；
Column plate is not provided with first scrubbing tower 1；Column plate is set in the scrubbing tower 3 of second scrubbing tower 2 and the 3rd；
The top of first scrubbing tower 1 sets detergent inlet and the first air inlet, and top sets the first gas outlet, bottom
First coal tar oil export is set, and detergent inlet is located at the first air inlet top；
The bottom of second scrubbing tower 2 sets the second air inlet, and top sets the second gas outlet, and top sets the first oil inlet,
Middle part sets the second oil inlet, and bottom sets the second coal tar oil export；
The bottom of 3rd scrubbing tower 3 sets the 3rd air inlet, and the top of air inlet sets the 3rd oil inlet and the 3rd coal tar
Import, top sets the 3rd gas outlet, and bottom sets liquid outlet；
Gas-liquid separation device 4 sets charging aperture, the 3rd coal tar oil export, gas exit and wastewater outlet；
First gas outlet is connected with the second air inlet, and the second gas outlet is connected with the 3rd air inlet；Liquid outlet point
It is not connected with the first oil inlet, the second oil inlet and the 3rd oil inlet；
3rd gas outlet is connected by condensing unit with the charging aperture of gas-liquid separation device 4, and the 3rd of gas-liquid separation device 4 the
Coal tar oil export is connected with the 3rd coal tar oil inlet and storage tank respectively；
The second coal tar oil export is also connected with storage tank；
The first coal tar oil export connects settling tank, the delivery port of settling tank and wastewater outlet respectively with the first scrubbing tower
1 detergent inlet is connected.Settling tank is also connected with after-treatment device, the post processing of the dust-laden coal tar for settling.
The process for reclaiming coal tar and oil gas from low-temperature pyrolysis of coal oil gas using described system is as follows：
The high-temperature oil gas (400-700 DEG C) come by fine coal low temperature pyrogenation reaction system are washed into the first scrubbing tower 1
Treatment, the most of dust carried secretly in high-temperature oil gas and heavy coal tar carry row by the ammoniacal liquor of the uppermost spray of the first scrubbing tower 1
Go out system, ammonia circulation is used after standing separation, the first coal tar for obtaining can be further processed；
Oil gas (200-400 DEG C) containing a small amount of dust and heavy coal tar is washed by the bottom of the second scrubbing tower 2 into second
The recycle oil from the bottom of towe of the 3rd scrubbing tower 3 for washing the middle part of 2 and second scrubbing tower of tower 2 and top carries out counter current contacting, by oil gas
The a small amount of dust of middle residue, heavy coal tar and part light tar catch and condense out, and obtain the second coal tar, described
Second coal tar delivers to tank field as product；
The uncooled oil gas of the tower top of second scrubbing tower 2 (150-300 DEG C) enters the 3rd scrubbing tower 3 by the bottom of the 3rd scrubbing tower 3,
Further separated with the recycle oil from the bottom of the 3rd scrubbing tower 3, and carried out fully with the 3rd coal tar of overhead reflux
Heat and mass, tower top obtain coal gas and light tar；
Gas-liquid separation is carried out after coal gas and light tar are condensed, coal gas product, the 3rd coai-tar product is obtained and is given up
Water, a 3rd coai-tar product part returns to the 3rd scrubbing tower 3 is used to control the temperature of the oil gas of discharge at the top of the 3rd scrubbing tower 3
Degree, remainder delivers to tank field as product.
Those skilled in the art can determine that first washes according to the amount of dust and heavy coal tar in actual pyrolysis of coal oil gas
The number of tower 1, the second scrubbing tower 2 or the 3rd scrubbing tower 3 is washed, the number of the first scrubbing tower 1 is 1,2,3,4 as described
Or 5 etc., the number of second scrubbing tower 2 is 1,2,3,4 or 5 etc., and the number of the 3rd scrubbing tower 3 is
1,2,3,4 or 5 etc..
The system that coal tar is reclaimed from pyrolysis of coal oil gas that the utility model is provided includes first scrubbing tower 1,
When individual second scrubbing tower 2 and three scrubbing tower 3, you can obtain the coal gas and coal tar of high-quality.
The system that coal tar is reclaimed from pyrolysis of coal oil gas that the utility model is provided combines oil by by conventional washing
Wash, first the dust and heavy component in oil gas are separated by washing process, the oil gas after treatment carries out oil wash again, can
Obtain the coal tar oil and gas of the separation of high-quality.
If simple washed using washing unit, coal tar oil yield is low (7-8%), and high energy consumption, wastewater flow rate is big；If
Simple to carry out oil wash using oil wash unit, the content of product coal tar well cuts is more than 20%.
Applicant's statement, the foregoing is only specific embodiment of the present utility model, but protection model of the present utility model
Enclose and be not limited thereto, person of ordinary skill in the field is it will be clearly understood that any belong to those skilled in the art and exist
In the technical scope that the utility model is disclosed, the change or replacement that can be readily occurred in all fall within protection domain of the present utility model
Within the scope of disclosure.
Claims (10)
1. the system that coal tar is reclaimed in a kind of oil gas from pyrolysis of coal, it is characterised in that the system includes：
Washing unit, washes, oil gas and the first coal tar after being washed to pyrolysis of coal oil gas；
Oil wash unit, oil wash is carried out to the oil gas after washing, obtains the oil gas after oil wash and the second coal tar；
Separative element, is the 3rd coal tar oil and gas by the Oil-gas Separation after oil wash；
The oil wash unit includes the second scrubbing tower (2) and the 3rd scrubbing tower (3)；
The oil gas vent for washing unit is connected with the air inlet of the second scrubbing tower (2), the gas outlet and the 3rd of the second scrubbing tower (2)
The air inlet of scrubbing tower (3) is connected；The liquid outlet of the 3rd scrubbing tower (3) respectively with the oil inlet of the second scrubbing tower (2) and
The oil inlet of three scrubbing towers (3) is connected；
The gas outlet of the 3rd scrubbing tower (3) is connected with the charging aperture of separative element.
2. system according to claim 1, it is characterised in that set in second scrubbing tower (2) and the 3rd scrubbing tower (3)
Put column plate.
3. system according to claim 1 and 2, it is characterised in that the level of the oil inlet of second scrubbing tower (2) is high
Level height of the degree higher than the air inlet of the second scrubbing tower (2).
4. system according to claim 1 and 2, it is characterised in that the oil inlet of second scrubbing tower (2) includes first
Oil inlet and the second oil inlet, the level height of the level height higher than the second oil inlet of the first oil inlet, the 3rd scrubbing tower (3)
Liquid outlet be respectively connected with the first oil inlet and the second oil inlet, the second scrubbing tower (2) bottom sets the second coal tar
Oil export.
5. system according to claim 1 and 2, it is characterised in that the level of the oil inlet of the 3rd scrubbing tower (3) is high
Level height of the degree higher than the air inlet of the 3rd scrubbing tower (3).
6. system according to claim 1 and 2, it is characterised in that the 3rd scrubbing tower (3) also sets up the 3rd coal tar
Import, the level height of the level height higher than the oil inlet of the 3rd scrubbing tower (3) of the 3rd coal tar oil inlet, the 3rd coal tar
Oil inlet is connected with the 3rd coal tar oil export of the separative element, the 3rd coal tar oil export of separative element also with storage tank phase
Even.
7. system according to claim 1 and 2, it is characterised in that the washing unit include the first scrubbing tower (1) and/
Or washing tank, first scrubbing tower (1) or washing tank set air inlet and inlet, top setting gas outlet, bottom setting
Liquid outlet, the level height of the level height higher than air inlet of the inlet.
8. system according to claim 7, it is characterised in that be not provided with column plate in first scrubbing tower (1).
9. system according to claim 1 and 2, it is characterised in that the separative element includes condensing unit and gas-liquid point
From device (4), the gas outlet of the 3rd scrubbing tower (3) is connected with the charging aperture of condensing unit, condensing unit discharging opening and gas
The charging aperture of liquid separating apparatus (4) is connected.
10. system according to claim 1 and 2, it is characterised in that the system includes that the first scrubbing tower (1), second are washed
Wash tower (2), the 3rd scrubbing tower (3), condensing unit and gas-liquid separation device (4)；
First scrubbing tower (1) top sets detergent inlet and the first air inlet, and top sets the first gas outlet, and bottom sets
The first coal tar oil export is put, detergent inlet is located at the first air inlet top；
Second scrubbing tower (2) bottom sets the second air inlet, and top sets the second gas outlet, and top sets the first oil inlet, in
Portion sets the second oil inlet, and bottom sets the second coal tar oil export；
3rd scrubbing tower (3) bottom sets the 3rd air inlet, and the top of air inlet sets the 3rd oil inlet and the 3rd coal tar enters
Mouthful, top sets the 3rd gas outlet, and bottom sets liquid outlet；
Gas-liquid separation device (4) sets charging aperture, the 3rd coal tar oil export, gas exit and wastewater outlet；
First gas outlet is connected with the second air inlet, and the second gas outlet is connected with the 3rd air inlet；Liquid outlet respectively with
First oil inlet, the second oil inlet and the 3rd oil inlet are connected；
3rd gas outlet is connected by condensing unit with the charging aperture of gas-liquid separation device (4), and the 3rd of gas-liquid separation device (4) the
Coal tar oil export is connected with the 3rd coal tar oil inlet and storage tank respectively；
The second coal tar oil export is connected with storage tank；
The first coal tar oil export connects settling tank, the delivery port of settling tank and wastewater outlet respectively with the first scrubbing tower (1)
Detergent inlet be connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621432584.0U CN206298556U (en) | 2016-12-23 | 2016-12-23 | A kind of system that coal tar is reclaimed in the oil gas from pyrolysis of coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621432584.0U CN206298556U (en) | 2016-12-23 | 2016-12-23 | A kind of system that coal tar is reclaimed in the oil gas from pyrolysis of coal |
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| CN206298556U true CN206298556U (en) | 2017-07-04 |
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ID=59204030
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| CN201621432584.0U Active CN206298556U (en) | 2016-12-23 | 2016-12-23 | A kind of system that coal tar is reclaimed in the oil gas from pyrolysis of coal |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021111671A1 (en) * | 2019-12-02 | 2021-06-10 | 株式会社Ihi | Gas purification method and gas purification device |
| CN114317040A (en) * | 2021-12-29 | 2022-04-12 | 新奥科技发展有限公司 | Oil-containing gas purification system and oil-containing gas purification method |
| CN114522488A (en) * | 2021-12-25 | 2022-05-24 | 兖矿科蓝凯美特化工有限公司 | Workshop dust drainage washing processing system |
| CN115367979A (en) * | 2021-05-21 | 2022-11-22 | 中国石油天然气集团有限公司 | Oily sludge pyrolysis treatment control system and method |
-
2016
- 2016-12-23 CN CN201621432584.0U patent/CN206298556U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021111671A1 (en) * | 2019-12-02 | 2021-06-10 | 株式会社Ihi | Gas purification method and gas purification device |
| JPWO2021111671A1 (en) * | 2019-12-02 | 2021-06-10 | ||
| CN114746165A (en) * | 2019-12-02 | 2022-07-12 | 株式会社Ihi | Gas purification method and gas purification device |
| JP7351349B2 (en) | 2019-12-02 | 2023-09-27 | 株式会社Ihi | Gas purification method and gas purification device |
| CN115367979A (en) * | 2021-05-21 | 2022-11-22 | 中国石油天然气集团有限公司 | Oily sludge pyrolysis treatment control system and method |
| CN114522488A (en) * | 2021-12-25 | 2022-05-24 | 兖矿科蓝凯美特化工有限公司 | Workshop dust drainage washing processing system |
| CN114317040A (en) * | 2021-12-29 | 2022-04-12 | 新奥科技发展有限公司 | Oil-containing gas purification system and oil-containing gas purification method |
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