CN213699373U - Full oil recovery system with multiple absorption towers operating in parallel - Google Patents
Full oil recovery system with multiple absorption towers operating in parallel Download PDFInfo
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- CN213699373U CN213699373U CN202021868531.XU CN202021868531U CN213699373U CN 213699373 U CN213699373 U CN 213699373U CN 202021868531 U CN202021868531 U CN 202021868531U CN 213699373 U CN213699373 U CN 213699373U
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Abstract
A full oil recovery system with multiple absorption towers running in parallel comprises a flue gas absorption system and an oil washing regeneration system; the flue gas absorption system is provided with a plurality of sets, and the plurality of sets of flue gas absorption systems are connected in parallel and then are connected with the wash oil regeneration system. A wash oil delivery pump and a wash oil flow meter are independently arranged on a wash oil inlet pipeline of each set of absorption system, and the wash oil supply quantity of each absorption tower can be independently adjusted and controlled according to the smoke discharge quantity of each rolling mill, so that the optimal use cost is achieved; and a bag filter, an absorption tower circulating pump, a duplex filter and a rolling oil-containing washing oil flowmeter are independently arranged on the washing oil output pipeline of each set of absorption system, and are used for controlling the liquid level height in the absorption tower and filtering impurities in the rolling oil-containing washing oil output by the absorption tower. The whole oil recovery system adopts the parallel operation of multiple absorption towers to replace the traditional single absorption tower absorption system, has the advantages of small occupied space, high treatment capacity, flexible expansion of treatment capacity, safe use, low investment and use cost and the like, not only meets the national safety and environmental protection standards, but also has obvious energy saving and consumption reduction, and successfully solves the technical problem of the existing whole oil recovery system.
Description
Technical Field
The utility model relates to a cold rolling of aluminium processing trade and paper tinsel roll oily flue gas recovery technical field that the in-process produced, concretely relates to full oil recovery system of many absorption tower parallel operation.
Background
The oily fume generated in the cold rolling and foil rolling processes in the existing aluminum processing industry is mainly collected, treated and recycled by adopting a full-oil recovery system; the system is an energy-saving, consumption-reducing and emission-reducing device designed for oil-containing flue gas generated in the rolling process of aluminum plates, strips and foils; the working principle is that the rolling oil in the flue gas is absorbed by utilizing the good intersolubility of the washing oil and the rolling oil and the difference of saturated vapor pressure at the same temperature and pressure, and the washing oil containing the rolling oil is subjected to vacuum analysis by utilizing the distillation range difference of the washing oil and the rolling oil, so that the two oil products are separated, and the purposes of recycling the rolling oil and discharging the air up to the standard are achieved.
However, all the current domestic and foreign full-oil recovery systems are single absorption towers, namely, the full-oil recovery system only comprises one absorption tower, and when a plurality of rolling mills work, one absorption tower is shared by air pipes; however, the single absorption tower whole oil recovery system faces the following problems: firstly, along with the technical development, the efficiency of the rolling mill is higher and higher, the smoke discharge amount of the rolling mill is larger and larger, and the smoke discharge amount of the existing single rolling mill reaches 100000-150000 Nm3Perh, 400000-600000 Nm can be achieved if 3-4 rolling mills are used together3The existing absorption tower is difficult to realize the effective recovery of all the rolling oil in the flue gas, and the capacity design of the absorption tower needs to be increased; secondly, fire hazard is increased, when a plurality of rolling mills are connected together through air ducts, if one rolling mill is in fire, if the control is improper, the fire hazard can be spread to other rolling mills, and the fire hazard loss is enlarged; thirdly, when the absorption tower is maintained, all rolling mills need to be shut down, which has overlarge influence on production; fourthly, the investment cost and the use cost of the whole oil recovery system are high due to the redundant air pipes and the large space requirement; therefore, how to solve the above problems of the whole oil recovery system becomes a technical problem faced by the current whole oil recovery system.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the background art, the utility model discloses a full oil recovery system with a plurality of absorption towers running in parallel, which comprises a flue gas absorption system and an oil washing regeneration system; the flue gas absorption system is provided with a plurality of sets, and the plurality of sets of flue gas absorption systems are connected in parallel and then connected with the wash oil regeneration system; the whole oil recovery system adopts a plurality of sets of flue gas absorption systems to replace the original independent flue gas absorption system, and has the advantages of small occupied space, high treatment capacity, flexible expansion of treatment capacity, safe use, low investment and use cost and the like.
In order to realize the utility model aims at, the utility model adopts the following technical scheme: a full oil recovery system with multiple absorption towers running in parallel comprises a flue gas absorption system and an oil washing regeneration system; the flue gas absorption system is provided with a plurality of sets, and the plurality of sets of flue gas absorption systems are connected in parallel and then connected with the wash oil regeneration system; the flue gas absorption system is internally provided with independent absorption towers, each absorption tower independently corresponds to one rolling mill, and the design processing capacity of the flue gas absorption system only needs to meet the smoke discharge requirement of one rolling mill, so the flue gas absorption system is small in size, small in occupied space and low in manufacturing cost; when a rolling mill needs to be added, only a new flue gas absorption system needs to be correspondingly added, so that the method has the advantage of flexible expansion; because the flues of the smoke absorption systems are independently arranged and are not communicated with each other, even if a fire disaster occurs to a rolling mill, the fire disaster does not spread to other rolling mills, so that the risk of fire disaster expansion is avoided; when an absorption tower needs maintenance, the corresponding smoke absorption system is only required to be closed and separated from the full-oil recovery system, so that the problem that other rolling mills need to be shut down completely during the maintenance of the conventional absorption tower is solved; the flue gas absorption system and the oil washing regeneration system are connected by a pipeline, so that the conventional lengthy air pipe construction and large space requirements are avoided, and the construction cost and the maintenance cost are greatly reduced.
Further, the flue gas absorption system comprises a rolling mill exhaust hood, a fan and an absorption tower, wherein the rolling mill exhaust hood is connected to the absorption tower through an air pipe and the fan, the exhaust hood is arranged at the upper part of the rolling mill, the fan enables a wind inlet of the exhaust hood to generate negative pressure, oil-containing flue gas generated by the rolling mill enters the absorption tower through the exhaust hood under the action of the negative pressure, and the absorption tower absorbs and purifies the gas and liquid phases of the oil-containing flue gas and then discharges air meeting the emission standard into the atmosphere; the absorption towers are provided with a wash oil input port and a wash oil output port, and the wash oil input port and the wash oil output port of each absorption tower are respectively connected in parallel through a wash oil input pipeline and a wash oil output pipeline; a wash oil delivery pump and a wash oil flowmeter are independently arranged on a wash oil input pipeline of each absorption tower, and the wash oil supply quantity of each absorption tower can be independently adjusted and controlled according to the smoke discharge quantity of each rolling mill, so that the optimal use cost is achieved; and a bag filter, an absorption tower circulating pump, a duplex filter and a rolling oil-containing washing oil flow meter are independently arranged on the washing oil output pipeline of each absorption tower, and are used for controlling the liquid level height in the absorption tower and filtering impurities in the rolling oil-containing washing oil output by the absorption tower.
Further, the wash oil regeneration system comprises a degassing tower, a desorption tower, a finished oil tank, a rolling mill oil tank, a wash oil transfer oil tank and a vacuum pump system; the degassing tower is provided with a degassing tower rolling oil washing oil inlet, a degassing tower rolling oil washing oil outlet and a degassing tower vacuum port; the analytical tower is provided with an analytical tower oil washing inlet containing rolling oil, a rolling oil gas outlet, an oil washing outlet and an analytical tower vacuum port; the finished oil tank is provided with a rolling oil inlet, a rolling oil outlet and a finished oil tank vacuum port; the wash oil transfer oil tank is provided with an oil inlet and an oil outlet;
a rolling oil containing washing oil inlet of a degassing tower of the degassing tower is connected with a washing oil output pipeline of the flue gas absorption system, and a rolling oil containing washing oil outlet of the degassing tower is connected with a rolling oil containing washing oil inlet of an analytic tower of the analytic tower; a rolling oil gas outlet of the resolution tower is connected with a rolling oil inlet of the finished oil tank, and a wash oil outlet is connected with an oil inlet of a wash oil transfer oil tank; a rolling oil outlet of the finished oil tank is connected with a rolling mill oil tank; the vacuum port of the degassing tower, the vacuum port of the desorption tower and the vacuum port of the finished product oil tank are connected to a vacuum pump system;
a degassing tower circulating pump and a heat-conducting oil heat exchanger are arranged on a connecting pipeline between a degassing tower rolling oil washing outlet of the degassing tower and a rolling oil washing inlet of the desorption tower; a condenser is arranged on a connecting pipeline between a rolled oil gas outlet of the desorption tower and a rolled oil inlet of the finished oil tank; a finished oil output pump is arranged on a connecting pipeline between the finished oil tank and the rolling mill oil tank; a washing oil outlet of the analysis tower is connected with an oil inlet connecting pipeline of a washing oil transfer oil tank, and an analysis tower circulating pump and an oil-water heat exchanger are arranged on the pipeline; and a waste heat recovery heat exchanger is arranged between a connecting pipeline of a degassing tower containing a rolling oil washing oil outlet of the degassing tower and a connecting pipeline of a resolving tower containing a rolling oil washing oil inlet of the resolving tower and a connecting pipeline of a washing oil outlet of the resolving tower and an oil inlet of a washing oil transfer oil tank.
Further, the oil-water heat exchanger is connected with a cooling water system A; the heat conduction oil heat exchanger is connected with a heat conduction oil heater; the condenser is connected with a cooling water system B.
Furthermore, level meters are arranged on the absorption tower and the wash oil transfer oil tank.
Further, the system also comprises a control system; the fan, the absorption tower circulating pump, the degassing tower circulating pump, the analysis tower circulating pump, the product oil output pump, the liquid level meter and the control system are electrically connected.
Furthermore, the washing oil delivery pump, the absorption tower circulating pump, the degassing tower circulating pump, the analysis tower circulating pump and the finished oil output pump are variable frequency pumps.
Due to the adoption of the technical scheme, the utility model discloses following beneficial effect has: the utility model discloses a full oil recovery system with multiple absorption towers running in parallel, which comprises a flue gas absorption system and an oil washing regeneration system; the flue gas absorption system is provided with a plurality of sets, and the plurality of sets of flue gas absorption systems are connected in parallel and then connected with the wash oil regeneration system; this full oil recovery system will adopt many sets of flue gas absorption systems to replace independent flue gas absorption system in the past, have that occupation space is little, throughput is high, throughput can expand in a flexible way, safe in utilization, investment and use cost low grade advantage, not only satisfy national security and environmental protection standard, and energy saving and consumption reduction are showing, consequently successfully solved current full oil recovery system's technical problem.
Drawings
FIG. 1 is a schematic diagram of a full oil recovery system with multiple absorption towers operating in parallel.
In the figure: 1. a mill fume hood; 2. a fan; 3. an absorption tower; 3.1, a wash oil delivery pump; 3.2, an oil washing flow meter; 3.3, a bag filter; 3.4, an absorption tower circulating pump; 3.5, a duplex filter; 3.6, a rolling oil-containing washing oil flowmeter; 8. a degassing tower; 8.1, a circulating pump of the degassing tower; 9. an oil-water heat exchanger; 11. a waste heat recovery heat exchanger; 12. a heat transfer oil heat exchanger; 13. a resolution tower; 13.1, a circulating pump of the desorption tower; 14. a condenser; 15. a finished oil tank; 15.1, a finished oil output pump; 17. a rolling mill oil tank; 19. a wash oil transfer tank; 20. a cooling water system A; 21. a heat conducting oil heater; 22. a cooling water system B; 23. a vacuum pump system.
Detailed Description
The invention will be explained in more detail by the following examples, which disclose the invention and are intended to protect all technical improvements within the scope of the invention.
A full oil recovery system with multiple absorption towers running in parallel comprises a flue gas absorption system and an oil washing regeneration system; the three sets of flue gas absorption systems are connected in parallel and then connected with the wash oil regeneration system;
the flue gas absorption system comprises a rolling mill exhaust hood 1, a fan 2 and an absorption tower 3, wherein the rolling mill exhaust hood 1 is connected to the absorption tower 3 through an air pipe and the fan 2; the absorption towers 3 are provided with a wash oil input port and a wash oil output port, and the wash oil input port and the wash oil output port of each absorption tower 3 are respectively connected in parallel through a wash oil input pipeline and a wash oil output pipeline; a wash oil delivery pump 3.1 and a wash oil flowmeter 3.2 are independently arranged on a wash oil input pipeline of each absorption tower 3; a bag filter 3.3, an absorption tower circulating pump 3.4, a duplex filter 3.5 and a rolling oil-containing washing oil flow meter 3.6 are independently arranged on the washing oil outlet pipeline of each absorption tower 3;
the wash oil regeneration system comprises a degassing tower 8, an analytical tower 13, a finished oil tank 15, a rolling mill oil tank 17, a wash oil transfer oil tank 19 and a vacuum pump system 23; the degassing tower 8 is provided with a degassing tower rolling oil washing oil inlet, a degassing tower rolling oil washing oil outlet and a degassing tower vacuum port; the desorption tower 13 is provided with a rolling oil-containing washing oil inlet, a rolling oil gas outlet, a washing oil outlet and a desorption tower vacuum port; the finished oil tank 15 is provided with a rolling oil inlet, a rolling oil outlet and a finished oil tank vacuum port; the wash oil transfer oil tank 19 is provided with an oil inlet and an oil outlet;
a rolling oil containing washing oil inlet of a degassing tower 8 is connected with a washing oil output pipeline of the flue gas absorption system, and a rolling oil containing washing oil outlet of the degassing tower is connected with a rolling oil containing washing oil inlet of an analysis tower 13; a rolled oil gas outlet of the resolution tower 13 is connected with a rolled oil inlet of the finished oil tank 15, and a wash oil outlet is connected with an oil inlet of a wash oil transfer oil tank 19; a rolling oil outlet of the finished oil tank 15 is connected with a rolling mill oil tank 17; the vacuum port of the degassing tower, the vacuum port of the desorption tower and the vacuum port of the finished product oil tank are all connected to a vacuum pump system 23;
a degassing tower circulating pump 8.1 and a heat-conducting oil heat exchanger 12 are arranged on a connecting pipeline between a degassing tower rolling oil-containing washing oil outlet of the degassing tower 8 and a rolling oil-containing washing oil inlet of the desorption tower 13; a condenser 14 is arranged on a connecting pipeline between a rolled oil gas outlet of the desorption tower 13 and a rolled oil inlet of the finished oil tank 15; a finished oil output pump 15.1 is arranged on a connecting pipeline between the finished oil tank 15 and the rolling mill oil tank 17; a washing oil outlet of the desorption tower 13 is connected with an oil inlet connecting pipeline of a washing oil transfer oil tank 19, and a desorption tower circulating pump 13.1 and an oil-water heat exchanger 9 are arranged on the pipeline; a waste heat recovery heat exchanger 11 is arranged between a connecting pipeline of a degassing tower containing rolling oil washing oil outlet of the degassing tower 8 and a connecting pipeline of a resolving tower containing rolling oil washing oil inlet of the resolving tower 13 and a connecting pipeline of a washing oil outlet of the resolving tower 13 and an oil inlet of a washing oil transfer oil tank 19;
the oil-water heat exchanger 9 is connected with a cooling water system A20; the heat conducting oil heat exchanger 12 is connected with a heat conducting oil heater 21; the condenser 14 is connected with a cooling water system B22;
liquid level meters are arranged on the degassing tower 8 and the wash oil transfer oil tank 19; the full-oil recovery system with the multiple absorption towers operating in parallel comprises a control system; the fan 2, the absorption tower circulating pump 3.4, the degassing tower circulating pump 8.1, the analysis tower circulating pump 13.1, the product oil output pump 15.1 and the liquid level meter are electrically connected with the control system; and the absorption tower circulating pump 3.4, the degassing tower circulating pump 8.1, the analysis tower circulating pump 13.1 and the product oil output pump 15.1 are variable frequency pumps.
The working process of the full oil recovery system with the multiple absorption towers operating in parallel is as follows: when a plurality of rolling mills run simultaneously, the rolling mill fume hood 1 sends oily fume discharged by the rolling mills into the corresponding absorption tower 3 under the negative pressure action of the fan 2 to carry out gas-liquid two-phase absorption, and purified air meeting the discharge standard is discharged into the atmosphere; after large-particle impurities in the rolling-oil-containing wash oil are removed through a bag filter 3.3, the rolling-oil-containing wash oil is sent to a duplex filter 3.5 through a corresponding absorption tower circulating pump 3.4 for efficient purification, the purified rolling-oil-containing wash oil controls the absorption tower circulating pump 3.4 according to a control system, passes through a rolling-oil-containing wash oil flowmeter 3.6 and is finally sent to a degassing tower 8;
under the action of a vacuum pump system 23, the rolling oil-containing washing oil removes the contained water in a degassing tower 8;
the dewatered washing oil containing rolling oil sequentially enters a waste heat recovery heat exchanger 11 and a heat conducting oil heat exchanger 12 to be heated under the pressure action of a circulating pump 8.1 of a degassing tower, and is sent to an analysis tower 13 after reaching a set temperature;
performing vacuum reduced pressure fractionation on the rolling oil-containing wash oil in an analytical tower 13 under the action of a vacuum pump system 23;
the separated rolling oil steam enters a condenser 14 under the action of vacuum to exchange heat with a cooling water system B22, and the condensed rolling oil enters a finished oil tank 15 to form rolling oil finished oil; the product oil enters the oil tank 17 of the rolling mill for repeated use under the action of the product oil output pump 15.1;
the separated wash oil is sequentially cooled by the waste heat recovery heat exchanger 11 and the oil-water heat exchanger 9 under the action of the circulating pump 13.1 of the analytical tower, then enters the wash oil transfer oil tank 19 for storage, is redistributed under the control of the wash oil flowmeter 3.2, and is conveyed to the corresponding absorption tower 3 by the wash oil conveying pump 3.1 for recycling.
The washing oil transfer pump 3.1, the absorption tower circulating pump 3.4, the degassing tower circulating pump 8.1, the analysis tower circulating pump 13.1 and the product oil output pump 15.1 are all controlled by frequency conversion, and the washing oil transfer oil tank 19 and the liquid level meter of the absorption tower 3 participate in the frequency conversion control of the washing oil transfer pump 3.1 and the absorption tower circulating pump 3.4 so as to control the liquid level height of the washing oil in the absorption tower 3; the absorption towers 3 operate independently and do not affect each other.
All the technical features of the embodiments described above can be combined in any combination, and for the sake of brevity, all the possible combinations of the technical features of the embodiments described above are not described, but it should be understood that the present invention is intended to protect all the variations and modifications of the embodiments all falling within the scope of the present concept and the present invention.
The part of the utility model not detailed is prior art.
Claims (7)
1. The utility model provides a full oil recovery system of many absorption towers parallel operation which characterized by: comprises a flue gas absorption system and an oil washing regeneration system; the flue gas absorption system is provided with a plurality of sets, and the plurality of sets of flue gas absorption systems are connected in parallel and then are connected with the wash oil regeneration system.
2. The whole oil recovery system of claim 1, wherein the absorption towers are connected in parallel, and the whole oil recovery system is characterized in that: the flue gas absorption system comprises a rolling mill exhaust hood (1), a fan (2) and an absorption tower (3), wherein the rolling mill exhaust hood (1) is connected to the absorption tower (3) through an air pipe and the fan (2); the absorption towers (3) are provided with washing oil input ports and washing oil output ports, and the washing oil input ports and the washing oil output ports of the absorption towers (3) are respectively connected in parallel through washing oil input pipelines and washing oil output pipelines; a wash oil delivery pump (3.1) and a wash oil flowmeter (3.2) are independently arranged on the wash oil inlet pipeline of each absorption tower (3); and a bag filter (3.3), an absorption tower circulating pump (3.4), a duplex filter (3.5) and a rolling oil-containing washing oil flowmeter (3.6) are independently arranged on the washing oil outlet pipeline of each absorption tower (3).
3. The whole oil recovery system of claim 2, wherein the absorption towers are connected in parallel, and the whole oil recovery system is characterized in that: the wash oil regeneration system comprises a degassing tower (8), a desorption tower (13), a finished oil tank (15), a rolling mill oil tank (17), a wash oil transfer oil tank (19) and a vacuum pump system (23); the degassing tower (8) is provided with a degassing tower rolling oil washing oil inlet, a degassing tower rolling oil washing oil outlet and a degassing tower vacuum port; the desorption tower (13) is provided with a rolling oil-containing washing oil inlet, a rolling oil gas outlet, a washing oil outlet and a desorption tower vacuum port; the finished oil tank (15) is provided with a rolling oil inlet, a rolling oil outlet and a finished oil tank vacuum port; the wash oil transfer oil tank (19) is provided with an oil inlet and an oil outlet;
a rolling oil containing washing oil inlet of a degassing tower of the degassing tower (8) is connected with a washing oil output pipeline of the flue gas absorption system, and a rolling oil containing washing oil outlet of the degassing tower is connected with a rolling oil containing washing oil inlet of an analytical tower (13); a rolled oil gas outlet of the resolution tower (13) is connected with a rolled oil inlet of a finished oil tank (15), and a wash oil outlet is connected with an oil inlet of a wash oil transfer oil tank (19); a rolling oil outlet of the finished oil tank (15) is connected with a rolling mill oil tank (17); the vacuum port of the degassing tower, the vacuum port of the desorption tower and the vacuum port of the finished product oil tank are all connected to a vacuum pump system (23);
a degassing tower circulating pump (8.1) and a heat-conducting oil heat exchanger (12) are arranged on a connecting pipeline of a degassing tower washing oil outlet containing rolling oil and a washing oil inlet containing rolling oil of a resolving tower (13); a condenser (14) is arranged on a connecting pipeline between a rolled oil gas outlet of the desorption tower (13) and a rolled oil inlet of the finished oil tank (15); a finished oil output pump (15.1) is arranged on a connecting pipeline between the finished oil tank (15) and the rolling mill oil tank (17); a wash oil outlet of the resolution tower (13) is connected with an oil inlet connecting pipeline of a wash oil transfer oil tank (19) and is provided with a resolution tower circulating pump (13.1) and an oil-water heat exchanger (9); and a waste heat recovery heat exchanger (11) is arranged between a connecting pipeline of a degassing tower containing rolling oil washing oil outlet of the degassing tower (8) and a connecting pipeline of a resolving tower containing rolling oil washing oil inlet of the resolving tower (13) and a connecting pipeline of a washing oil outlet of the resolving tower (13) and an oil inlet of a washing oil transfer oil tank (19).
4. The whole oil recovery system of claim 3, wherein the absorption towers are connected in parallel, and the whole oil recovery system is characterized in that: the oil-water heat exchanger (9) is connected with a cooling water system A (20); the heat conduction oil heat exchanger (12) is connected with a heat conduction oil heater (21); the condenser (14) is connected with a cooling water system B (22).
5. The whole oil recovery system of claim 3, wherein the absorption towers are connected in parallel, and the whole oil recovery system is characterized in that: and liquid level meters are arranged on the absorption tower (3) and the wash oil transfer oil tank (19).
6. The whole oil recovery system of claim 5, wherein the absorption towers are connected in parallel, and the whole oil recovery system is characterized in that: the system also comprises a control system; the device comprises a fan (2), an absorption tower circulating pump (3.4), a degassing tower circulating pump (8.1), an analysis tower circulating pump (13.1), a finished oil output pump (15.1), and a liquid level meter, wherein the fan is electrically connected with a control system.
7. The whole oil recovery system of claim 6, wherein the absorption towers are connected in parallel, and the whole oil recovery system is characterized in that: the washing oil delivery pump (3.1), the absorption tower circulating pump (3.4), the degassing tower circulating pump (8.1), the desorption tower circulating pump (13.1) and the finished oil output pump (15.1) are variable frequency pumps.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021868531.XU CN213699373U (en) | 2020-09-01 | 2020-09-01 | Full oil recovery system with multiple absorption towers operating in parallel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021868531.XU CN213699373U (en) | 2020-09-01 | 2020-09-01 | Full oil recovery system with multiple absorption towers operating in parallel |
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| CN213699373U true CN213699373U (en) | 2021-07-16 |
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| CN202021868531.XU Active CN213699373U (en) | 2020-09-01 | 2020-09-01 | Full oil recovery system with multiple absorption towers operating in parallel |
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