CN107774005A - A kind of exhaust treatment system and method for acid regeneration unit - Google Patents
A kind of exhaust treatment system and method for acid regeneration unit Download PDFInfo
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- CN107774005A CN107774005A CN201710986606.0A CN201710986606A CN107774005A CN 107774005 A CN107774005 A CN 107774005A CN 201710986606 A CN201710986606 A CN 201710986606A CN 107774005 A CN107774005 A CN 107774005A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2045—Hydrochloric acid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/65—Employing advanced heat integration, e.g. Pinch technology
- B01D2259/652—Employing advanced heat integration, e.g. Pinch technology using side coolers
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Abstract
The invention discloses a kind of exhaust treatment system of acid regeneration unit, including the first graphite heat exchanger, the second graphite heat exchanger, the 3rd graphite heat exchanger, the first water-circulating pump, the second water-circulating pump, water leg, pond and cooling tower；First graphite heat exchanger is gas vapour graphite heat exchanger, and second graphite heat exchanger is gas-liquid falling liquid film graphite heat exchanger, and the 3rd graphite heat exchanger is gas-liquid graphite heat exchanger；The exhaust vent on the exhaust gas inlet connection absorption tower of first graphite heat exchanger, the waste gas outlet of first graphite heat exchanger connects the exhaust gas inlet of second graphite heat exchanger, the waste gas outlet of second graphite heat exchanger connects the exhaust gas inlet of the 3rd graphite heat exchanger, the exhaust gas fan of the waste gas outlet connection acid regeneration unit of the 3rd graphite heat exchanger.The exhaust treatment system of acid regeneration unit provided by the invention, the steam discharge capacity in torrefaction waste gas can be effectively reduced, so as to effectively reduce discharge amount of exhaust gas.
Description
Technical field
The present invention relates to technical field of waste gas treatment, more particularly to a kind of exhaust treatment system of acid regeneration unit and side
Method.
Background technology
Environmental protection is the restraining factors of socio-economic development all the time, and sustainable development has to establish in environmental protection
On the basis of, economic development at the cost of the environment is unsustainable.Therefore, the high pollution industry such as chemical industry, steel is all opened
The technological means of a variety of resource reclaims and environmental protection is have issued, to meet the requirement of sustainable development, such as steel row
The relatively common acid regeneration mode of industry.
Currently, hundreds of acid regeneration units of number used in domestic steel industry, mostly using certainly state-of-the-art in the world
Spray roasting is regenerated, and still, this method can not still avoid discharging a large amount of vapor and a small amount of HCI, therefore often cover
Unit has a significant chimney for emitting " white cigarette ", 75 DEG C of waste heat energy of delivery temperature.
The existing procedure of classical classical acid regeneration unit, although regeneration cycle has been carried out to spent acid to greatest extent, and
And the connection for regenerate unit and pickling unit uses, its discharge index also complies with national standard GB28665-2012 requirements, still,
With the increase of production capacity and increasingly strict and severe environmental requirement, the resource reclaim mode of current acid regeneration has seemed ratio
It is more single.For this problem, from range technically, it should which the sight for solving problem is placed on the water that waste gas gives off
On steam, energy recovery, energy-saving and emission-reduction are carried out, and then preferably improve environment, lift current organic efficiency.
The content of the invention
The purpose of the embodiment of the present invention is to provide a kind of exhaust treatment system of acid regeneration unit, and it is useless effectively to reduce roasting
Steam discharge capacity in gas, so as to effectively reduce discharge amount of exhaust gas.
The another object of the embodiment of the present invention is to provide a kind of waste gas processing method of acid regeneration unit, can effectively reduce roasting
The steam discharge capacity in waste gas is burnt, so as to effectively reduce discharge amount of exhaust gas.
To achieve the above object, the embodiments of the invention provide a kind of exhaust treatment system of acid regeneration unit, including
One graphite heat exchanger, the second graphite heat exchanger, the 3rd graphite heat exchanger, the first water-circulating pump, the second water-circulating pump, water leg,
Pond and cooling tower；
Wherein, first graphite heat exchanger is gas vapour graphite heat exchanger, and second graphite heat exchanger is gas-liquid falling liquid film
Graphite heat exchanger, the 3rd graphite heat exchanger are gas-liquid graphite heat exchanger；The exhaust gas inlet of first graphite heat exchanger connects
The exhaust vent on absorption tower is connect, the waste gas outlet of first graphite heat exchanger connects the waste gas of second graphite heat exchanger
Import, the waste gas outlet of second graphite heat exchanger connect the exhaust gas inlet of the 3rd graphite heat exchanger, the 3rd stone
The exhaust gas fan of the waste gas outlet connection acid regeneration unit of black heat exchanger；
The cooling water inlet of the cooling water inlet of second graphite heat exchanger and the 3rd graphite heat exchanger passes through
First water-circulating pump is connected to the first outlet in the pond, the coolant outlet of second graphite heat exchanger and described
The coolant outlet of 3rd graphite heat exchanger is connected to the import of the cooling tower, the import connection running water of the cooling tower
The outlet of pipe, the import in the pond and the cooling tower；
Condensation wastewater outlet, the condensation wastewater outlet and the 3rd of the second graphite heat exchanger of first graphite heat exchanger
The condensation wastewater outlet of graphite heat exchanger is all connected with the import of the water leg, and the outlet of the water leg passes sequentially through described
Two water-circulating pumps are connected to the absorption water inlet on absorption tower.
As the improvement of such scheme, the exhaust gas inlet of first graphite heat exchanger is located at first graphite heat exchanger
Top, the waste gas outlet of first graphite heat exchanger is located at the lower wall of first graphite heat exchanger, first stone
The condensation wastewater outlet of black heat exchanger is located at the bottom of first graphite heat exchanger；
The combustion fan of the combustion air inlet connection acid regeneration unit of first graphite heat exchanger, first graphite
The roaster of the combustion air exports connection acid regeneration unit of heat exchanger；Wherein described combustion air inlet is located at first stone
The lower wall of black heat exchanger, the combustion air exports are located at the upper side wall of first graphite heat exchanger, and the combustion-supporting sky
Gas import, combustion air exports are respectively arranged on the two lateral walls of first graphite heat exchanger.
As the improvement of such scheme, the exhaust gas inlet of second graphite heat exchanger is located at second graphite heat exchanger
Top, the waste gas outlet of second graphite heat exchanger is located at the lower wall of second graphite heat exchanger, second stone
The condensation wastewater outlet of black heat exchanger is located at the bottom of second graphite heat exchanger；
The cooling water inlet of second graphite heat exchanger be located at second graphite heat exchanger lower wall, described second
The coolant outlet of graphite heat exchanger is located at the upper side wall of second graphite heat exchanger, and the cooling water inlet, cooling water
Outlet is respectively arranged on the two lateral walls of second graphite heat exchanger.
As the improvement of such scheme, the absorbing liquid import of second graphite heat exchanger is filled by the water spray of pipeline connection one
Put, absorbing liquid is sprayed water to be internally formed moisture film in the pipeline by the water injector, and the absorbing liquid import is located at described
The upper side wall of second graphite heat exchanger.
As the improvement of such scheme, the exhaust gas inlet of the 3rd graphite heat exchanger is located at the 3rd graphite heat exchanger
Top, the waste gas outlet of the 3rd graphite heat exchanger is located at the lower wall of the 3rd graphite heat exchanger, the 3rd stone
The condensation wastewater outlet of black heat exchanger is located at the bottom of the 3rd graphite heat exchanger；
The cooling water inlet of 3rd graphite heat exchanger be located at the 3rd graphite heat exchanger lower wall, described second
The coolant outlet of graphite heat exchanger is located at the upper side wall of the 3rd graphite heat exchanger, and the cooling water inlet, cooling water
Outlet is respectively arranged on the two lateral walls of the 3rd graphite heat exchanger.
As the improvement of such scheme, in addition to alkali groove and the 3rd water-circulating pump；The import connection institute of the exhaust gas fan
State the waste gas outlet of the 3rd graphite heat exchanger, the exhaust gas inlet of the outlet connection scrubbing tower of the exhaust gas fan, the washing
The outlet of sewer of tower connects the import of the alkali groove, and the outlet of the alkali groove is connected to described wash by the 3rd water-circulating pump
Wash the water inlet of tower.
As the improvement of such scheme, in addition to the 4th graphite heat exchanger, the outlet of the water leg passes sequentially through described
Second water-circulating pump and the 4th graphite heat exchanger are connected to the absorption water inlet on absorption tower；4th graphite heat exchanger is liquid liquid
Graphite heat exchanger, the absorption water water inlet of the 4th graphite heat exchanger connect second water-circulating pump, the 4th graphite
The absorption water inlet for absorbing water delivery port and connecting the absorption tower of heat exchanger, the cooling water inlet of the 4th graphite heat exchanger
The first outlet in the pond is connected to by first water-circulating pump, the coolant outlet of the 4th graphite heat exchanger connects
It is connected to the import of the cooling tower.
To realize above-mentioned another object, the embodiment of the present invention correspondingly provides a kind of exhaust-gas treatment side of acid regeneration unit
Method, including step：
The will be entered by the exhaust gas inlet of the first graphite heat exchanger by the waste gas that the exhaust vent on absorption tower is discharged
One graphite heat exchanger, combustion-supporting sky is conveyed by the combustion air inlet of the first graphite heat exchanger by the combustion fan of acid regeneration unit
Gas is with to the combustion air exports conveying after cooling into the waste gas of the first graphite heat exchanger by the first graphite heat exchanger
To acid regeneration unit, the waste gas after cooling is discharged by the waste gas outlet of first graphite heat exchanger and changed by the second graphite
The exhaust gas inlet of hot device enters the second graphite heat exchanger, and vapor is cooled into water and passes through the cold of first graphite heat exchanger
Solidifying wastewater outlet flows into water leg；
The cooling water in pond is delivered to described through the first water-circulating pump by the cooling water inlet of the second graphite heat exchanger
Two graphite heat exchangers, gone out after being cooled down to the waste gas for entering the second graphite heat exchanger by the cooling water of the second graphite heat exchanger
Mouth output is to cooling tower and returns in pond, and the water spray that absorbing liquid is entered at the top of the second graphite heat exchanger by absorbing liquid import fills
The HCl to be formed in moisture film scrubbing exhaust gas is put, the waste gas after cooling down and washing is discharged by the waste gas outlet of the second graphite heat exchanger
And the 3rd graphite heat exchanger is entered by the exhaust gas inlet of the 3rd graphite heat exchanger, and vapor is cooled into water by described
The condensation wastewater outlet of two graphite heat exchangers flows into water leg；Wherein, the pond connects with the cooling tower；
The cooling water in pond is delivered to described through the first water-circulating pump by the cooling water inlet of the 3rd graphite heat exchanger
Three graphite heat exchangers, gone out after being cooled down to the waste gas for entering the 3rd graphite heat exchanger by the cooling water of the 3rd graphite heat exchanger
Mouth output is to cooling tower and returns in pond, and the waste gas after cooling is discharged and passed through by the waste gas outlet of the 3rd graphite heat exchanger
The exhaust gas inlet of 3rd graphite heat exchanger enters the exhaust gas fan of acid regeneration unit, and vapor is cooled into water by described the
The condensation wastewater outlet of three graphite heat exchangers flows into water leg；
The waste water flowed into water leg passes sequentially through the second water-circulating pump, the 4th graphite heat exchanger is exported to absorption tower conduct
The absorption water on absorption tower.
As the improvement of such scheme, the water that the step is flowed into water leg passes through the second water-circulating pump, the 4th graphite
The absorption water that heat exchanger exports to absorption tower as absorption tower specifically includes：
The waste water flowed into water leg is exported to the absorption water water inlet of the 4th graphite heat exchanger by the second water-circulating pump,
The cooling water in pond is delivered to the 4th graphite by the cooling water inlet of the 4th graphite heat exchanger through the first water-circulating pump and changed
Hot device, gone out after cooling treatment is carried out to the absorption water in the 4th graphite heat exchanger by the cooling water of the 4th graphite heat exchanger
Mouth output is to cooling tower and returns in pond, and the absorption water after cooling is exported to absorption by the delivery port of the 4th graphite heat exchanger
Tower uses as water is absorbed.
As the improvement of such scheme, the EGT discharged by the waste gas outlet of first graphite heat exchanger reduces
To 60 DEG C~68 DEG C；The EGT discharged by the waste gas outlet of second graphite heat exchanger is reduced to 40 DEG C~50 DEG C；
The EGT discharged by the waste gas outlet of the 3rd graphite heat exchanger is reduced to less than 40 DEG C.
Compared with prior art, a kind of exhaust treatment system of acid regeneration unit and method are led to disclosed in the embodiment of the present invention
Cross and processing is cooled down to the waste gas of acid regeneration unit using three-level graphite heat exchanger successively, greatly reduce in waste gas
Steam discharge capacity, as long as the discharge of hydrogen chloride can just be reduced to the utmost by reducing steam discharge, so as to effectively reduce waste gas
Discharge capacity.In addition, it is cold to carry out vapor during cooling processing to the waste gas of acid regeneration unit successively by three-level graphite heat exchanger
But flow into water leg and export to absorption tower by water-circulating pump into water and be used as the absorption water circulation on absorption tower and use, so as to
Reclaim a large amount of industrial waters, effectively save water resource.Moreover, the torrefaction waste gas quilt after being cooled successively by three-level graphite heat exchanger
About 40 DEG C of temperature is cooled to, the steam of gas entrainment is largely condensed, and considerably reduces exhaust gas fan load, this is to extending
Vital effect is played in service life of fan and stable operation, also improves operating condition.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the exhaust treatment system of acid regeneration unit in the embodiment of the present invention.
Fig. 2 is a kind of structure of first graphite heat exchanger of the exhaust treatment system of acid regeneration unit in the embodiment of the present invention
Schematic diagram.
Fig. 3 is a kind of the another of first graphite heat exchanger of the exhaust treatment system of acid regeneration unit in the embodiment of the present invention
View.
Fig. 4 is a kind of structure of second graphite heat exchanger of the exhaust treatment system of acid regeneration unit in the embodiment of the present invention
Schematic diagram.
Fig. 5 is a kind of the another of second graphite heat exchanger of the exhaust treatment system of acid regeneration unit in the embodiment of the present invention
View.
Fig. 6 is a kind of structure of 3rd graphite heat exchanger of the exhaust treatment system of acid regeneration unit in the embodiment of the present invention
Schematic diagram.
Fig. 7 is a kind of the another of 3rd graphite heat exchanger of the exhaust treatment system of acid regeneration unit in the embodiment of the present invention
View.
Fig. 8 is a kind of structure of 4th graphite heat exchanger of the exhaust treatment system of acid regeneration unit in the embodiment of the present invention
Schematic diagram.
Fig. 9 is a kind of the another of 4th graphite heat exchanger of the exhaust treatment system of acid regeneration unit in the embodiment of the present invention
View.
Figure 10 is a kind of flow chart of the waste gas processing method of acid regeneration unit in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other under the premise of creative work is not made
Embodiment, belong to the scope of protection of the invention.
It is a kind of structural representation of the exhaust treatment system for acid regeneration unit that the embodiment of the present invention 1 provides referring to Fig. 1
Figure.The exhaust treatment system for the acid regeneration unit that the embodiment provides includes the first graphite heat exchanger 11, the second graphite heat exchanger
12nd, the 3rd graphite heat exchanger 13, the first water-circulating pump 21, the second water-circulating pump 23 (wherein, circulating pump is all out that one is standby),
Water leg 31, pond 32 and cooling tower 33.
Wherein, first graphite heat exchanger 11 is gas vapour graphite heat exchanger, and second graphite heat exchanger 12 is gas-liquid
Falling liquid film graphite heat exchanger, the 3rd graphite heat exchanger 13 are gas-liquid graphite heat exchanger.First graphite heat exchanger 11 gives up
Gas import 111 connects the exhaust vent 101 on absorption tower 10, and the waste gas outlet 112 of first graphite heat exchanger 11 connects institute
The exhaust gas inlet 121 of the second graphite heat exchanger 12 is stated, the waste gas outlet 122 of second graphite heat exchanger 12 connects the described 3rd
The exhaust gas inlet 131 of graphite heat exchanger 13, the waste gas outlet 132 of the 3rd graphite heat exchanger 13 connect acid regeneration unit
Exhaust gas fan 41.
The cooling water inlet of the cooling water inlet 123 of second graphite heat exchanger 12 and the 3rd graphite heat exchanger 13
133 are connected to the outlet 321 in the pond 32 by first water-circulating pump 21, second graphite heat exchanger 12 it is cold
But the coolant outlet 134 of water out 124 and the 3rd graphite heat exchanger 13 is connected to the import of the cooling tower 33
331, the import 331 of the cooling tower 33 is also connected with running water pipe, the import 323 in the pond 32 and going out for the cooling tower 33
Mouth 332 connects.Wherein, when the water level in pond or cooling tower is inadequate, signal is sent by control system, to be automatically replenished
Running water.
Condensation wastewater outlet 115, the condensation wastewater outlet of the second graphite heat exchanger 12 of first graphite heat exchanger 11
125 and the 3rd the condensation wastewater outlet 135 of graphite heat exchanger 13 be all connected with the import 311 of the water leg 31, it is described to catchment
The outlet 312 of groove 31 is connected to the absorption water inlet 102 on absorption tower 10 by second water-circulating pump 23.
It can be seen that a kind of exhaust treatment system of acid regeneration unit of the offer of the present embodiment passes through the first graphite heat exchanger
11st, the second graphite heat exchanger 12, the 3rd graphite heat exchanger 13 join end to end successively connects to form three-level graphite heat exchanger to acid regeneration
The waste gas of unit cools down processing, greatly reduces the steam discharge capacity in waste gas, as long as reducing steam discharge just
The discharge of hydrogen chloride can be reduced to the utmost, so as to effectively reduce discharge amount of exhaust gas.In addition, by three-level graphite heat exchanger according to
Vapor is cooled into water and flows into water leg and defeated by water-circulating pump when the secondary waste gas to acid regeneration unit carries out cooling processing
Go out the absorption water circulation to absorption tower as absorption tower to use, so as to reclaim a large amount of industrial waters, effectively save water resource.
With reference to 2~Fig. 3 of figure, first graphite heat exchanger 11 is the vertical gas vapour graphite using block hole-type graphite heat exchanger
Heat exchanger.The exhaust gas inlet 111 of first graphite heat exchanger 11 is located at the top of first graphite heat exchanger 11, and described the
The waste gas outlet 112 of one graphite heat exchanger 11 is located at the lower wall of first graphite heat exchanger 11, the first graphite heat exchange
The condensation wastewater outlet 115 of device 11 is located at the bottom of first graphite heat exchanger.First graphite heat exchanger 11 it is combustion-supporting
Air intlet 113 connects the combustion fan (not shown) of acid regeneration unit, and the combustion air of first graphite heat exchanger 11 goes out
Mouth 114 connects the roaster of acid regeneration units.Wherein described combustion air inlet 113 is located at first graphite heat exchanger 11
Lower wall, the combustion air exports 114 are located at the upper side wall of first graphite heat exchanger, and the combustion air inlet
113rd, combustion air exports 114 are respectively arranged on the two lateral walls of first graphite heat exchanger 11.The first graphite heat exchange
The lower wall of device 11 is additionally provided with discharging hole 116, and the upper side wall of first graphite heat exchanger 11 is additionally provided with drain 117.Wherein,
The waste gas outlet 112, combustion air inlet 113 and drain 117 are located at the homonymy of the first graphite heat exchanger 11, described combustion-supporting
Air outlet slit 114, discharging hole 116 are located at the homonymy of the first graphite heat exchanger 11.
The torrefaction waste gas for coming from absorption tower enters in first order graphite cooler 11, is entered by combustion air and torrefaction waste gas
Row indirect heat exchange, heat energy is reclaimed, reach the purpose for reducing energy consumption.When it is implemented, the exhaust vent by absorption tower 10
The waste gas of 101 discharges enters the first graphite heat exchanger 11 by the exhaust gas inlet 111 of the first graphite heat exchanger 11, by acid regeneration machine
The combustion fan of group conveys combustion air with to entering the first graphite by the combustion air inlet 113 of the first graphite heat exchanger 11
The waste gas of heat exchanger 11 by the combustion air exports 114 of the first graphite heat exchanger 11 is transmitted back to acid regeneration after cooling down
Unit, the waste gas after cooling are discharged by the waste gas outlet 112 of first graphite heat exchanger 11 and deliver to the heat exchange of the second graphite
Device 12, and vapor is cooled into water and flows into water leg 31 by the condensation wastewater outlet 115 of first graphite heat exchanger 11.
Wherein, the EGT entered by the exhaust gas inlet 111 of first graphite heat exchanger 11 is more than 88 DEG C, is led to
The combustion air temperature for crossing the conveying of combustion air inlet 113 of the first graphite heat exchanger 11 is normal temperature (according to 25 DEG C of calculating), warp
The EGT for crossing the discharge of waste gas outlet 112 of first graphite heat exchanger 11 is 60 DEG C~68 DEG C, is changed by the first graphite
The combustion air temperature of the combustion air exports discharge of hot device 11 is 58 DEG C or so.Control is given up into the first graphite heat exchanger 11
It is 18000m that gas, which is passed through flow,3/ h and exhaust outlet amount are 18000m3/h.Control control enters the first graphite heat exchanger 11
Combustion air flow be 6700Nm3/h.In addition, the heat exchange area for the first graphite heat exchanger 11 that the present embodiment uses is 150
㎡。
With reference to 4~Fig. 5 of figure, second graphite heat exchanger 12 is the vertical gas-liquid falling liquid film using tube-type graphite heat exchanger
Graphite heat exchanger.The exhaust gas inlet 121 of second graphite heat exchanger 12 is located at the top of second graphite heat exchanger 12, institute
The waste gas outlet 122 for stating the second graphite heat exchanger 12 is located at the lower wall of second graphite heat exchanger 12, second graphite
The condensation wastewater outlet 125 of heat exchanger 12 is located at the bottom of first graphite heat exchanger.Second graphite heat exchanger 12
Cooling water inlet 123 is connected to the first outlet 321 in the pond 32, second graphite by first water-circulating pump 21
The coolant outlet 124 of heat exchanger 12 is connected to the import 331 of the cooling tower 33.Wherein described cooling water inlet 123 is located at
The lower wall of second graphite heat exchanger 12, the coolant outlet 124 are located at the upside of second graphite heat exchanger 12
Wall, and the cooling water inlet 123, coolant outlet 124 are respectively arranged on the two lateral walls of second graphite heat exchanger 12.
The lower wall of second graphite heat exchanger 12 is additionally provided with discharging hole 126, and the upper side wall of second graphite heat exchanger 12 is also set
There is drain 127.The upper side wall of second graphite heat exchanger 12 is additionally provided with absorbing liquid import 128.The absorbing liquid import 128
One water injector (with reference to figure 1) is connected by pipeline, absorbing liquid is by the water injector to be internally formed water in the pipeline
Film, with the HCL in scrubbing exhaust gas.Wherein, the waste gas outlet 122, cooling water inlet 123, drain 127 and absorbing liquid import
128 are located at the homonymy of the second graphite heat exchanger 12, and the coolant outlet 124, discharging hole 126 are located at the second graphite heat exchanger 12
Homonymy.
Torrefaction waste gas enters the second graphite heat exchanger after cooling by the first graphite heat exchanger, utilizes recirculated cooling water and roasting
Burn waste gas and carry out indirect heat exchange, one water injector is connected by pipeline with absorbing liquid import on the second graphite heat exchanger top,
Absorbing liquid is sprayed water to be internally formed moisture film in the pipeline by the water injector, the HCl in scrubbing exhaust gas.Specific implementation
When, the cooling water in pond 32 is delivered to institute through the first water-circulating pump 21 by the cooling water inlet 123 of the second graphite heat exchanger 12
The second graphite heat exchanger 12 is stated, by the second graphite heat exchanger 12 after being cooled down to the waste gas for entering the second graphite heat exchanger 12
Coolant outlet 124 export to cooling tower 33 and return in pond 32, pass through absorbing liquid import 128 enter the second graphite exchange heat
HCl in the moisture film scrubbing exhaust gas of device 12, the waste gas outlet 122 that the waste gas after cooling down and washing passes through the second graphite heat exchanger 12
The 3rd graphite heat exchanger 13 is escaped and enter, and vapor is cooled into water and given up by the condensation of second graphite heat exchanger 12
Water out 125 flows into water leg 31.Wherein, the absorbing liquid import on the second graphite heat exchanger top passes through the water spray of pipeline connection one
Device, absorbing liquid are sprayed water to be internally formed the HCl in moisture film scrubbing exhaust gas in the pipeline by the water injector, added
Mass-transfer efficiency.
Wherein, the EGT entered by the exhaust gas inlet 121 of second graphite heat exchanger 12 is 60 DEG C~68 DEG C,
The cooling water temperature conveyed by the cooling water inlet 123 of the second graphite heat exchanger 12 is 20 DEG C or so, by second stone
The EGT that the waste gas outlet 122 of black heat exchanger 12 is discharged is 40 DEG C~50 DEG C, passes through the cooling of the second graphite heat exchanger 12
The cooling water temperature that water out 124 is discharged is 40 DEG C or so.The waste gas controlled into the second graphite heat exchanger 12 is passed through flow and is
18000m3/ h and exhaust outlet amount are 9400m3/h.The cooling water flow into the second graphite heat exchanger 12 is controlled to be
350m3/h.In addition, the heat exchange area for the second graphite heat exchanger 12 that the present embodiment uses is 530 ㎡.
With reference to 6~Fig. 7 of figure, the 3rd graphite heat exchanger 13 is the vertical gas-liquid graphite using tube-type graphite heat exchanger
Heat exchanger.The exhaust gas inlet 131 of 3rd graphite heat exchanger 13 is located at the top of the 3rd graphite heat exchanger 13, and described the
The waste gas outlet 132 of three graphite heat exchangers 13 is located at the lower wall of the 3rd graphite heat exchanger 13, the 3rd graphite heat exchange
The condensation wastewater outlet 135 of device 13 is located at the bottom of first graphite heat exchanger.The cooling of 3rd graphite heat exchanger 13
Water inlet 133 is connected to the first outlet 321 in the pond 32, the 3rd graphite heat exchange by first water-circulating pump 21
The coolant outlet 134 of device 13 is connected to the import 331 of the cooling tower 33.Wherein described cooling water inlet 133 is located at described
The lower wall of 3rd graphite heat exchanger 13, the coolant outlet 134 are located at the upper side wall of the 3rd graphite heat exchanger 13, and
The cooling water inlet 133, coolant outlet 134 are respectively arranged on the two lateral walls of the 3rd graphite heat exchanger 13.It is described
The lower wall of 3rd graphite heat exchanger 13 is additionally provided with discharging hole 136, and the upper side wall of the 3rd graphite heat exchanger 13, which is additionally provided with, to be put
Eat dishes without rice or wine 137.Wherein, the waste gas outlet 132, cooling water inlet 133, drain 137 are located at the same of the 3rd graphite heat exchanger 13
Side, the coolant outlet 134, discharging hole 136 are located at the homonymy of the 3rd graphite heat exchanger 13.
Torrefaction waste gas enters the 3rd graphite heat exchanger after cooling by the second graphite heat exchanger, utilizes recirculated cooling water and roasting
Burn waste gas and carry out indirect heat exchange.When it is implemented, the cooling water in pond 32 is exchanged heat through the first water-circulating pump 21 by the 3rd graphite
The cooling water inlet 133 of device 13 is delivered to the 3rd graphite heat exchanger 13, and the waste gas for entering the 3rd graphite heat exchanger 13 is entered
Export to cooling tower 33 and return in pond 32 by the coolant outlet 134 of the 3rd graphite heat exchanger 13 after row cooling, cool down
Waste gas afterwards escapes and enter the 3rd graphite heat exchanger 13 by the waste gas outlet 132 of the 3rd graphite heat exchanger 13, and vapor
It is cooled into water and water leg is flowed into by the condensation wastewater outlet 135 of the 3rd graphite heat exchanger 13.
Wherein, the EGT entered by the exhaust gas inlet 131 of the 3rd graphite heat exchanger 13 is 40 DEG C~50 DEG C,
The cooling water temperature conveyed by the cooling water inlet 133 of the 3rd graphite heat exchanger 13 is 20 DEG C or so, by the 3rd stone
The EGT that the waste gas outlet 122 of black heat exchanger 13 is discharged is less than 40 DEG C, is gone out by the cooling water of the 3rd graphite heat exchanger 13
The cooling water temperatures of the discharge of mouth 134 are 40 DEG C or so.The waste gas controlled into the 3rd graphite heat exchanger 13 is passed through flow and is
18000m3/ h and exhaust outlet amount are 7400m3/h.The cooling water flow into the 3rd graphite heat exchanger 13 is controlled to be
350m3/h.In addition, the heat exchange area for the 3rd graphite heat exchanger 13 that the present embodiment uses is 530 ㎡.
Referring back to Fig. 1, it is preferred that a kind of exhaust treatment system for acid regeneration unit that the present embodiment provides also includes alkali
The water-circulating pump 24 of groove 34 and the 3rd.The import of the exhaust gas fan 41 connects the waste gas outlet of the 3rd graphite heat exchanger 13
132, the exhaust gas inlet 901 of the outlet connection scrubbing tower 90 of the exhaust gas fan 41, the outlet of sewer 902 of the scrubbing tower 90 connects
The import 341 of the alkali groove 34 is connect, the outlet 342 of the alkali groove 34 is connected to the washing by the 3rd water-circulating pump 24
The water inlet 903 of tower 90.The waste gas discharged by the waste gas outlet 132 of the 3rd graphite heat exchanger 13 enters exhaust gas fan 41, then
Into last scrubbing tower 90, the wherein hypomere of scrubbing tower 90 is changed to alkali cleaning function, and epimere washs inflow with desalted water (about 0.5m3/h)
Alkali groove 34.Because the torrefaction waste gas after being cooled successively by three-level graphite heat exchanger is cooled to about 40 DEG C of temperature, gas entrainment
Steam be largely condensed, considerably reduce exhaust gas fan load, this rises to extending service life of fan and stable operation
To vital effect, operating condition is also improved.
With continued reference to Fig. 1, it is preferred that a kind of exhaust treatment system for acid regeneration unit that the present embodiment provides also includes the
Four graphite heat exchangers 14, the outlet 312 of the water leg 31 pass sequentially through the graphite of the second water-circulating pump 23 and the 4th heat exchange
Device 14 is connected to the absorption water inlet 102 on absorption tower 10.
Specifically, changed with reference to 8~Fig. 9 of figure, the liquid liquid graphite heat exchanger of the 4th graphite heat exchanger 14, the 4th graphite
The absorption water water inlet 141 of hot device 14 connects the output end of the 3rd water-circulating pump 23, the 4th graphite heat exchanger 14
The absorption water inlet 102 that water delivery port 142 connects the absorption tower 10 is absorbed, the cooling water of the 4th graphite heat exchanger 14 enters
Mouth 143 is connected to the first outlet 321 in the pond 32, the 4th graphite heat exchanger 14 by first water-circulating pump 21
Coolant outlet 144 be connected to the import 331 of the cooling tower 33.And vapor is cooled into water and passes through the 4th graphite
The condensation wastewater outlet of heat exchanger 14 flows into water leg 31.
Wherein, the top for absorbing water water inlet 141 and being located at the 4th graphite heat exchanger 14, the absorption water delivery port
142 are located at the bottom of the 4th graphite heat exchanger 14.The cooling water inlet 143 is located at the 4th graphite heat exchanger 14
Lower wall, the coolant outlet 144 be located at the 4th graphite heat exchanger 14 upper side wall, and the cooling water inlet 143,
Coolant outlet 144 is respectively arranged on the two lateral walls of the 4th graphite heat exchanger 14.4th graphite heat exchanger 14
Lower wall is additionally provided with discharging hole 146, and the upper side wall of the 4th graphite heat exchanger 14 is additionally provided with drain 147.Wherein, it is described cold
But water inlet 143, drain 147 are located at the homonymy of the 4th graphite heat exchanger 14, the coolant outlet 144, discharging hole 146
In the homonymy of the 4th graphite heat exchanger 14.
In the present embodiment, in order to improve absorption tower absorption efficiency and improve regeneration acid concentration will enter absorption tower absorption
Water is cooled down, and a graphite cooler (i.e. the 4th graphite heat exchanger 14) is set up on the supply channel of absorption tower, will absorb water
Cooled down, regeneration acid concentration can about improve 2% or so.
Wherein, the wastewater temperature entered by the water inlet 141 of the 4th graphite heat exchanger 14 is 50 DEG C or so, is passed through
The cooling water temperature that the cooling water inlet 143 of 4th graphite heat exchanger 14 conveys is 20 DEG C or so, is changed by the 4th graphite
Waste water (the absorption water as absorption tower) temperature for absorbing the discharge of water delivery port 142 of hot device 14 is less than 40 DEG C, passes through the 4th stone
The cooling water temperature that the coolant outlet 144 of black heat exchanger 14 is discharged is 40 DEG C or so.Control control enters the 4th graphite and exchanged heat
The cooling water flow of device 14 is 50m3/h.In addition, the heat exchange area for the 4th graphite heat exchanger 14 that the present embodiment uses is 50 ㎡.
By implementing a kind of exhaust treatment system of acid regeneration unit provided by the invention, the production of acid regeneration unit can be handled
The ability of raw torrefaction waste gas is 4.5m3/h.For economic implications, for an acid-cleaning plate pickling machine for producing 1200000 tons per year
For group, about 28800 tons of annual recycle-water is annual to reclaim about 4.8 tons of HCl, annual saving day coal gas about 600000Nm3.In addition
Hydrogen chloride discharge≤20mg/Nm3, dust≤20mg/Nm3.Therefore, reclaiming industry water and heat resource has very big economic meaning
Justice.
It is a kind of flow chart of the waste gas processing method of acid regeneration unit provided in an embodiment of the present invention referring to Figure 10.Should
The waste gas processing method of embodiment includes step：
S101, the waste gas discharged by the exhaust vent on absorption tower entered by the exhaust gas inlet of the first graphite heat exchanger
Enter the first graphite heat exchanger, helped by the combustion fan of acid regeneration unit by the combustion air inlet conveying of the first graphite heat exchanger
Combustion air is with to the combustion air exports after cooling into the waste gas of the first graphite heat exchanger by the first graphite heat exchanger
The roaster of acid regeneration unit is delivered to, the waste gas after cooling is discharged and led to by the waste gas outlet of first graphite heat exchanger
The exhaust gas inlet for crossing the second graphite heat exchanger enters the second graphite heat exchanger, and vapor is cooled into water and passes through first stone
The condensation wastewater outlet of black heat exchanger flows into water leg；
S102, the cooling water in pond are delivered to institute through the first water-circulating pump by the cooling water inlet of the second graphite heat exchanger
The second graphite heat exchanger is stated, passes through the cooling of the second graphite heat exchanger after being cooled down to the waste gas for entering the second graphite heat exchanger
Water out is exported to cooling tower and returned in pond, the spray that absorbing liquid is entered at the top of the second graphite heat exchanger by absorbing liquid import
The HCl that water installations are formed in moisture film scrubbing exhaust gas, the waste gas outlet that the waste gas after cooling down and washing passes through the second graphite heat exchanger
Discharge and the 3rd graphite heat exchanger is entered by the exhaust gas inlet of the 3rd graphite heat exchanger, and vapor is cooled into water and passes through institute
The condensation wastewater outlet for stating the second graphite heat exchanger flows into water leg；Wherein, the pond connects with the cooling tower；
S103, the cooling water in pond are delivered to institute through the first water-circulating pump by the cooling water inlet of the 3rd graphite heat exchanger
The 3rd graphite heat exchanger is stated, passes through the cooling of the 3rd graphite heat exchanger after being cooled down to the waste gas for entering the 3rd graphite heat exchanger
Water out is exported to cooling tower and returned in pond, and the waste gas after cooling is discharged simultaneously by the waste gas outlet of the 3rd graphite heat exchanger
The exhaust gas fan of acid regeneration unit is entered by the exhaust gas inlet of the 3rd graphite heat exchanger, and vapor is cooled into water and passes through institute
The condensation wastewater outlet for stating the 3rd graphite heat exchanger flows into water leg；And
S104, the waste water flowed into water leg export to absorption tower the absorption for being used as absorption tower by the second water-circulating pump
Water.
Wherein, the step S104 is specifically included：
The waste water flowed into water leg is exported to the absorption water water inlet of the 4th graphite heat exchanger by the second water-circulating pump,
The cooling water in pond is delivered to the 4th graphite by the cooling water inlet of the 4th graphite heat exchanger through the first water-circulating pump and changed
Hot device, gone out after cooling treatment is carried out to the absorption water in the 4th graphite heat exchanger by the cooling water of the 4th graphite heat exchanger
Mouth output is to cooling tower and returns in pond, and the absorption water after cooling is exported to absorption by the delivery port of the 4th graphite heat exchanger
Tower uses as water is absorbed.
In the present embodiment, the EGT discharged by the waste gas outlet of first graphite heat exchanger is reduced to 65 DEG C
~68 DEG C；The EGT discharged by the waste gas outlet of second graphite heat exchanger is reduced to 40 DEG C~50 DEG C；Pass through institute
The EGT for stating the waste gas outlet discharge of the 3rd graphite heat exchanger is reduced to less than 40 DEG C.
A kind of operation principle of the waste gas processing method of acid regeneration unit provided in an embodiment of the present invention refer to above-mentioned reality
Example is applied, will not be repeated here.
To sum up, a kind of exhaust treatment system of acid regeneration unit and method disclosed in the embodiment of the present invention are by using three-level
Graphite heat exchanger cools down processing to the waste gas of acid regeneration unit successively, greatly reduces the steam discharge in waste gas
Amount, as long as the discharge of hydrogen chloride can just be reduced to the utmost by reducing steam discharge, so as to effectively reduce discharge amount of exhaust gas.Separately
Outside, vapor is cooled into water and flowed into when carrying out cooling processing to the waste gas of acid regeneration unit successively by three-level graphite heat exchanger
The absorption water circulation that water leg and being exported by water-circulating pump to absorption tower is used as absorption tower uses, so as to reclaim a large amount of works
Industry water, effectively save water resource.Moreover, the torrefaction waste gas after being cooled successively by three-level graphite heat exchanger is cooled to temperature
About 40 DEG C, the steam of gas entrainment is largely condensed, and considerably reduces exhaust gas fan load, and this uses the longevity to extending blower fan
Vital effect is played in life and stable operation, also improves operating condition.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of exhaust treatment system of acid regeneration unit, it is characterised in that exchanged heat including the first graphite heat exchanger, the second graphite
Device, the 3rd graphite heat exchanger, the first water-circulating pump, the second water-circulating pump, water leg, pond and cooling tower；
Wherein, first graphite heat exchanger is gas vapour graphite heat exchanger, and second graphite heat exchanger is gas-liquid falling liquid film graphite
Heat exchanger, the 3rd graphite heat exchanger are gas-liquid graphite heat exchanger；The exhaust gas inlet connection of first graphite heat exchanger is inhaled
The exhaust vent of tower is received, the waste gas of waste gas outlet connection second graphite heat exchanger of first graphite heat exchanger enters
Mouthful, the waste gas outlet of second graphite heat exchanger connects the exhaust gas inlet of the 3rd graphite heat exchanger, the 3rd graphite
The exhaust gas fan of the waste gas outlet connection acid regeneration unit of heat exchanger；
The cooling water inlet of the cooling water inlet of second graphite heat exchanger and the 3rd graphite heat exchanger is by described
First water-circulating pump is connected to the first outlet in the pond, the coolant outlet of second graphite heat exchanger and the described 3rd
The coolant outlet of graphite heat exchanger is connected to the import of the cooling tower, and the import of the cooling tower connects running water pipe,
The import in the pond and the outlet of the cooling tower；
Condensation wastewater outlet, the condensation wastewater outlet and the 3rd graphite of the second graphite heat exchanger of first graphite heat exchanger
The condensation wastewater outlet of heat exchanger is all connected with the import of the water leg, and the outlet of the water leg passes sequentially through second water
Circulating pump is connected to the absorption water inlet on absorption tower.
2. the exhaust treatment system of acid regeneration unit as claimed in claim 1, it is characterised in that first graphite heat exchanger
Exhaust gas inlet be located at the top of first graphite heat exchanger, the waste gas outlet of first graphite heat exchanger is located at described the
The lower wall of one graphite heat exchanger, the condensation wastewater outlet of first graphite heat exchanger is located at first graphite heat exchanger
Bottom；
The combustion fan of the combustion air inlet connection acid regeneration unit of first graphite heat exchanger, the first graphite heat exchange
The roaster of the combustion air exports connection acid regeneration unit of device；Wherein described combustion air inlet is changed located at first graphite
The lower wall of hot device, the combustion air exports are located at the upper side wall of first graphite heat exchanger, and the combustion air enters
Mouth, combustion air exports are respectively arranged on the two lateral walls of first graphite heat exchanger.
3. the exhaust treatment system of acid regeneration unit as claimed in claim 1, it is characterised in that second graphite heat exchanger
Exhaust gas inlet be located at the top of second graphite heat exchanger, the waste gas outlet of second graphite heat exchanger is located at described the
The lower wall of two graphite heat exchangers, the condensation wastewater outlet of second graphite heat exchanger is located at second graphite heat exchanger
Bottom；
The cooling water inlet of second graphite heat exchanger is located at the lower wall of second graphite heat exchanger, second graphite
The coolant outlet of heat exchanger is located at the upper side wall of second graphite heat exchanger, and the cooling water inlet, coolant outlet
It is respectively arranged on the two lateral walls of second graphite heat exchanger.
4. the exhaust treatment system of the acid regeneration unit as described in claim 1 or 3, it is characterised in that second graphite changes
The absorbing liquid import of hot device connects a water injector by pipeline, and absorbing liquid is sprayed water with the pipeline by the water injector
Moisture film is internally formed, the absorbing liquid import is located at the upper side wall of second graphite heat exchanger.
5. the exhaust treatment system of acid regeneration unit as claimed in claim 1, it is characterised in that the 3rd graphite heat exchanger
Exhaust gas inlet be located at the top of the 3rd graphite heat exchanger, the waste gas outlet of the 3rd graphite heat exchanger is located at described the
The lower wall of three graphite heat exchangers, the condensation wastewater outlet of the 3rd graphite heat exchanger is located at the 3rd graphite heat exchanger
Bottom；
The cooling water inlet of 3rd graphite heat exchanger is located at the lower wall of the 3rd graphite heat exchanger, second graphite
The coolant outlet of heat exchanger is located at the upper side wall of the 3rd graphite heat exchanger, and the cooling water inlet, coolant outlet
It is respectively arranged on the two lateral walls of the 3rd graphite heat exchanger.
6. the exhaust treatment system of acid regeneration unit as claimed in claim 1, it is characterised in that also including alkali groove and the 3rd water
Circulating pump；
The import of the exhaust gas fan connects the waste gas outlet of the 3rd graphite heat exchanger, and the outlet of the exhaust gas fan connects
The exhaust gas inlet of scrubbing tower is connect, the outlet of sewer of the scrubbing tower connects the import of the alkali groove, and the outlet of the alkali groove passes through
3rd water-circulating pump is connected to the water inlet of the scrubbing tower.
7. the exhaust treatment system of acid regeneration unit as claimed in claim 1, it is characterised in that also exchanged heat including the 4th graphite
Device, the outlet of the water leg passes sequentially through second water-circulating pump and the 4th graphite heat exchanger is connected to absorption tower
Absorption water inlet；
4th graphite heat exchanger is liquid liquid graphite heat exchanger, and the absorption water water inlet of the 4th graphite heat exchanger connects institute
State the second water-circulating pump, the absorption water inlet for absorbing water delivery port and connecting the absorption tower of the 4th graphite heat exchanger, institute
The cooling water inlet for stating the 4th graphite heat exchanger is connected to the first outlet in the pond by first water-circulating pump, described
The coolant outlet of 4th graphite heat exchanger is connected to the import of the cooling tower.
8. a kind of waste gas processing method of acid regeneration unit, it is characterised in that including step：
The waste gas discharged by the exhaust vent on absorption tower is entered into the first stone by the exhaust gas inlet of the first graphite heat exchanger
Black heat exchanger, by acid regeneration unit combustion fan by the combustion air inlet of the first graphite heat exchanger convey combustion air with
After cooling to the waste gas for entering the first graphite heat exchanger acid is delivered to by the combustion air exports of the first graphite heat exchanger
The roaster of unit is regenerated, the waste gas after cooling is discharged by the waste gas outlet of first graphite heat exchanger and passes through the second stone
The exhaust gas inlet of black heat exchanger enters the second graphite heat exchanger, and vapor is cooled into water and passes through first graphite heat exchanger
Condensation wastewater outlet flow into water leg；
The cooling water in pond is delivered to second stone through the first water-circulating pump by the cooling water inlet of the second graphite heat exchanger
Black heat exchanger, it is defeated by the coolant outlet of the second graphite heat exchanger after being cooled down to the waste gas for entering the second graphite heat exchanger
Go out to cooling tower and return in pond, the water injector shape that absorbing liquid is entered at the top of the second graphite heat exchanger by absorbing liquid import
HCl into moisture film scrubbing exhaust gas, the waste gas after cooling down and washing are discharged and led to by the waste gas outlet of the second graphite heat exchanger
The exhaust gas inlet for crossing the 3rd graphite heat exchanger enters the 3rd graphite heat exchanger, and vapor is cooled into water and passes through second stone
The condensation wastewater outlet of black heat exchanger flows into water leg；Wherein, the pond connects with the cooling tower；
The cooling water in pond is delivered to the 3rd stone through the first water-circulating pump by the cooling water inlet of the 3rd graphite heat exchanger
Black heat exchanger, it is defeated by the coolant outlet of the 3rd graphite heat exchanger after being cooled down to the waste gas for entering the 3rd graphite heat exchanger
Go out to cooling tower and return in pond, the waste gas after cooling is discharged by the waste gas outlet of the 3rd graphite heat exchanger and passes through the 3rd
The exhaust gas inlet of graphite heat exchanger enters the exhaust gas fan of acid regeneration unit, and vapor is cooled into water and passes through the 3rd stone
The condensation wastewater outlet of black heat exchanger flows into water leg；
The waste water flowed into water leg exports to absorption tower the absorption water for being used as absorption tower by the second water-circulating pump.
9. a kind of waste gas processing method of acid regeneration unit as claimed in claim 8, it is characterised in that the step flows into collection
Water in tank is exported to absorption tower by the second water-circulating pump is used as the absorption water on absorption tower and specifically includes：
The waste water flowed into water leg is exported to the absorption water water inlet of the 4th graphite heat exchanger, pond by the second water-circulating pump
Cooling water the 4th graphite heat exchanger is delivered to by the cooling water inlet of the 4th graphite heat exchanger through the first water-circulating pump,
To defeated by the coolant outlet of the 4th graphite heat exchanger after the absorption water progress cooling treatment in the 4th graphite heat exchanger
Go out to cooling tower and return in pond, the absorption water after cooling is exported by the delivery port of the 4th graphite heat exchanger to be made to absorption tower
Used to absorb water.
10. a kind of waste gas processing method of acid regeneration unit as claimed in claim 8 or 9, it is characterised in that pass through described the
The EGT of the waste gas outlet discharge of one graphite heat exchanger is reduced to 65 DEG C~68 DEG C；Pass through second graphite heat exchanger
The EGT of waste gas outlet discharge is reduced to 40 DEG C~50 DEG C；Discharged by the waste gas outlet of the 3rd graphite heat exchanger
EGT is reduced to less than 40 DEG C.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115350565A (en) * | 2022-07-12 | 2022-11-18 | 绍兴明业化纤有限公司 | Efficient sulfuric acid waste heat recovery equipment and recovery process thereof |
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|---|---|---|---|---|
| CN103752159A (en) * | 2014-01-27 | 2014-04-30 | 北京航天动力研究所 | Flue gas treatment acid absorption system and method |
| CN104645790A (en) * | 2015-02-10 | 2015-05-27 | 成都阿斯特克国龙环保工程有限公司 | Smoke purification system and method for pickling line |
| CN206168175U (en) * | 2016-08-12 | 2017-05-17 | 南通科兴石墨设备有限公司 | Modular graphite absorbs cooling tower |
-
2017
- 2017-11-28 CN CN201710986606.0A patent/CN107774005B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752159A (en) * | 2014-01-27 | 2014-04-30 | 北京航天动力研究所 | Flue gas treatment acid absorption system and method |
| CN104645790A (en) * | 2015-02-10 | 2015-05-27 | 成都阿斯特克国龙环保工程有限公司 | Smoke purification system and method for pickling line |
| CN206168175U (en) * | 2016-08-12 | 2017-05-17 | 南通科兴石墨设备有限公司 | Modular graphite absorbs cooling tower |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115350565A (en) * | 2022-07-12 | 2022-11-18 | 绍兴明业化纤有限公司 | Efficient sulfuric acid waste heat recovery equipment and recovery process thereof |
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