CN218653064U - Device for evaporating by utilizing residual heat - Google Patents
Device for evaporating by utilizing residual heat Download PDFInfo
- Publication number
- CN218653064U CN218653064U CN202222914894.8U CN202222914894U CN218653064U CN 218653064 U CN218653064 U CN 218653064U CN 202222914894 U CN202222914894 U CN 202222914894U CN 218653064 U CN218653064 U CN 218653064U
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- CN
- China
- Prior art keywords
- rotary kiln
- heat
- heat exchanger
- evaporation
- flue gas
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- 238000001704 evaporation Methods 0.000 title claims abstract description 40
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 33
- 239000003546 flue gas Substances 0.000 claims abstract description 33
- 230000008020 evaporation Effects 0.000 claims abstract description 32
- 238000002485 combustion reaction Methods 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 230000005855 radiation Effects 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims description 33
- 229910052788 barium Inorganic materials 0.000 claims description 25
- DSAJWYNOEDNPEQ-UHFFFAOYSA-N barium atom Chemical compound [Ba] DSAJWYNOEDNPEQ-UHFFFAOYSA-N 0.000 claims description 25
- 239000000428 dust Substances 0.000 claims description 25
- 239000002918 waste heat Substances 0.000 claims description 25
- 239000002002 slurry Substances 0.000 claims description 11
- 238000011084 recovery Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 2
- 239000003513 alkali Substances 0.000 claims 1
- WDIHJSXYQDMJHN-UHFFFAOYSA-L barium chloride Chemical compound [Cl-].[Cl-].[Ba+2] WDIHJSXYQDMJHN-UHFFFAOYSA-L 0.000 abstract description 19
- 229910001626 barium chloride Inorganic materials 0.000 abstract description 19
- 238000002425 crystallisation Methods 0.000 abstract description 8
- 230000008025 crystallization Effects 0.000 abstract description 8
- 239000007789 gas Substances 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 7
- 238000005265 energy consumption Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 239000003518 caustics Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Treating Waste Gases (AREA)
Abstract
The utility model relates to an utilize device that surplus heat evaporated, including the rotary kiln, be connected with rotary kiln combustion chamber heat energy on the rotary kiln and utilize module, rotary kiln flue gas to utilize module, rotary kiln casing radiation heat energy to utilize the module. Heat provided by a combustion chamber in the rotary kiln is used for providing heat for the first heat exchanger and heating the barium chloride solution in the first evaporation circulating unit; heat energy in the flue gas discharged by the rotary kiln provides heat for the second heat exchanger and heats the barium chloride solution in the second evaporation circulating unit; the barium chloride solution is preheated by the radiant heat of the rotary kiln shell. And hot gas exhausted by the first heat exchanger and the second heat exchanger is introduced into a third heat exchanger to preheat the barium chloride solution, and is finally purified by an alkaline tower and then discharged. The device has high heat energy utilization rate, and greatly reduces the energy consumption in the crystallization process of barium chloride.
Description
Technical Field
The utility model belongs to the technical field of the barium chloride crystallization technique and specifically relates to an utilize device that surplus heat comes evaporation.
Background
The barium chloride crystallization process is to heat a barium chloride solution, evaporate water in the barium chloride solution through an evaporator and discharge water vapor, so that the concentration of the solution is reduced to form slurry, the slurry is further processed for crystallization, and heat energy is required to be used for heating the slurry in the process.
Many companies use raw steam heat exchange or secondary steam heat exchange to evaporate materials to improve material concentration, but waste secondary generated heat and lower heat utilization rate. Therefore, there is a need for an apparatus for evaporation using residual heat to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the technical problem who exists among the prior art, provide an utilize surplus heat to come the device of evaporation.
The utility model provides an above-mentioned technical problem's technical scheme as follows: a device for evaporating by utilizing residual heat comprises a rotary kiln, wherein a rotary kiln combustion chamber heat energy utilization module, a rotary kiln flue gas utilization module and a rotary kiln shell radiation heat energy utilization module are connected to the rotary kiln;
the rotary kiln combustion chamber heat energy utilization module comprises a waste heat boiler flue gas induced draft fan, a first cyclone dust collector, a first waste heat boiler, a first heat exchanger and a first evaporation circulation unit, wherein an air inlet of the first cyclone dust collector is communicated with the rotary kiln combustion chamber, the first waste heat boiler is connected between the first cyclone dust collector and the waste heat boiler flue gas induced draft fan, an air outlet of the waste heat boiler flue gas induced draft fan is communicated with an air inlet of the first heat exchanger, and the first evaporation circulation unit is connected with a liquid inlet and a liquid outlet of the first heat exchanger;
the rotary kiln flue gas utilization module comprises a second cyclone dust collector, a bag-type dust collector, a second waste heat boiler, a rotary kiln flue gas induced draft fan, a second heat exchanger and a second evaporation circulation unit, wherein a gas inlet of the dust collector is connected with a rotary kiln flue gas discharge pipe, a gas outlet of the dust collector, the second cyclone dust collector, the second waste heat boiler, the bag-type dust collector, the rotary kiln flue gas induced draft fan and the second heat exchanger are sequentially connected, and the second evaporation circulation unit is connected with a liquid inlet and a liquid outlet of the second heat exchanger;
the rotary kiln shell radiation heat energy utilization module comprises a rotary kiln shell heater and a barium liquid circulation heating unit, the rotary kiln shell heater is installed on the upper side of the rotary kiln shell, and the rotary kiln shell heater is connected with the barium liquid circulation heating unit.
Preferably, in the above apparatus for evaporating by using residual heat, the first evaporation circulation unit and the second evaporation circulation unit have the same structure, the first evaporation circulation unit includes a forced circulation pump, an evaporator and a slurry pump, and both the forced circulation pump and the slurry pump are connected to the evaporator.
Preferably, the above-mentioned device for evaporating by using surplus heat has the exhaust ports of the first heat exchanger and the second heat exchanger connected to the inlet port of the third heat exchanger, and the exhaust port of the third heat exchanger connected to the caustic tower.
Preferably, in the above apparatus for evaporating by using residual heat, the barium liquid circulation heating unit includes a barium liquid buffer tank, a circulation pump, and a third heat exchanger, the third heat exchanger is connected to the barium liquid buffer tank and the circulation pump, and the rotary kiln shell heater is connected to the barium liquid buffer tank and the circulation pump.
Preferably, the above device for evaporating by using residual heat is provided, wherein a steam waste heat recovery unit is connected to an exhaust port of the evaporator.
The utility model has the advantages that: providing heat for the first heat exchanger by utilizing heat provided by a combustion chamber in the rotary kiln to heat the barium chloride solution in the first evaporation circulating unit; heat energy in the flue gas discharged by the rotary kiln provides heat for the second heat exchanger and heats the barium chloride solution in the second evaporation circulating unit; the barium chloride solution is preheated by the radiant heat of the rotary kiln shell. And hot gas exhausted by the first heat exchanger and the second heat exchanger is introduced into a third heat exchanger to preheat the barium chloride solution, and is finally purified by an alkaline tower and then discharged. The device has high heat energy utilization rate, and greatly reduces the energy consumption in the crystallization process of barium chloride.
Drawings
FIG. 1 is a schematic view of the overall connection structure of the present invention;
FIG. 2 is a schematic view of a connection structure of a heat energy utilization module of a rotary kiln combustion chamber;
FIG. 3 is a schematic view of a connection structure of a flue gas utilization module of the rotary kiln;
fig. 4 is a schematic view of a connection structure of the radiant heat energy utilization module of the rotary kiln shell.
In the drawings, the reference numbers indicate the following list of parts:
1. the device comprises a rotary kiln combustion chamber, 2, a rotary kiln flue gas discharge pipe, 3, a rotary kiln skin heater, 4, a second cyclone dust collector, 5, a bag-type dust collector, 6, a dust collector, 7, a rotary kiln flue gas induced draft fan, 8, a waste heat boiler flue gas induced draft fan, 9, a first cyclone dust collector, 10, a first waste heat boiler, 11, a first heat exchanger, 12, a forced circulation pump, 13, an evaporator, 14, a steam waste heat recovery unit, 15, a slurry pump, 16, a second heat exchanger, 17, an alkaline washing tower, 18, a third heat exchanger, 19, a barium liquid buffer barrel, 20, a circulation pump, 21, a crystallization unit, 22 and a second waste heat boiler.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, the device for evaporating by using residual heat comprises a rotary kiln, wherein a rotary kiln combustion chamber heat energy utilization module, a rotary kiln flue gas utilization module and a rotary kiln shell radiation heat energy utilization module are connected to the rotary kiln, and heat energy in flue gas discharged by the rotary kiln combustion chamber and the rotary kiln shell radiation heat energy are respectively used for providing heat energy for barium chloride crystals.
As shown in fig. 1 and 2, the heat energy utilization module of the rotary kiln combustion chamber utilizes a flue gas induced draft fan 8 of the waste heat boiler to provide power for air flow, cold air enters the rotary kiln combustion chamber 1, enters a first cyclone dust collector 9 after being heated by the combustion chamber to remove impurities in the air flow, hot air is introduced into a first waste heat boiler 10 to heat the air flow, hot air enters a first heat exchanger 11 after passing through the flue gas induced draft fan 8 of the waste heat boiler, and barium chloride solution in a first evaporation circulation unit is heated by the first heat exchanger 11.
As shown in fig. 1 and fig. 3, the rotary kiln flue gas utilization module utilizes the heat in the flue gas discharged by the rotary kiln flue gas discharge pipe 2 to heat the barium chloride solution in the second evaporation circulation unit. The flue gas discharged from the rotary kiln flue gas discharge pipe 2 is dedusted by the dust collector 6 and the second cyclone deduster 4, is heated by the second exhaust-heat boiler 22, is dedusted again by the bag deduster 5, is powered by the rotary kiln flue gas induced draft fan 7 and enters the second heat exchanger 16.
The first evaporation circulation unit and the second evaporation circulation unit are identical in structure and respectively comprise a forced circulation pump 12, an evaporator 13 and a slurry pump 15, wherein in the first evaporation circulation unit, the forced circulation pump 12, the evaporator 13 and the first heat exchanger 11 are sequentially connected to form a closed loop, and heat provided by the first heat exchanger 11 is used for heating the solution in the continuous circulation process of the barium chloride solution. After the water in the evaporator 13 is evaporated, the slurry is sent to a crystallization unit 21 by a slurry pump 15 to be crystallized. Similarly, in the second evaporation cycle unit, the solution is heated by the heat provided by the second heat exchanger 16 during the continuous circulation of the barium chloride solution.
As shown in fig. 1 and 4, the rotary kiln shell radiant heat energy utilization module comprises a rotary kiln shell heater 3 and a barium liquid circulation heating unit, wherein the rotary kiln shell heater 3 is installed on the upper side of the rotary kiln shell, and the rotary kiln shell heater 3 is connected with the barium liquid circulation heating unit. The barium liquid circulation heating unit comprises a barium liquid buffer barrel 19, a circulating pump 20 and a third heat exchanger 18, the third heat exchanger 18 is connected with the barium liquid buffer barrel 19 and the circulating pump 20, and the rotary kiln shell heater 3 is connected with the barium liquid buffer barrel 19 and the circulating pump 20. Adding barium liquid into a barium liquid buffer barrel 19, driving the barium liquid to circularly flow through a third heat exchanger 18 through a circulating pump 20, introducing hot gas exhausted by a first heat exchanger 11 and a second heat exchanger 16 into the third heat exchanger 18 to preheat the barium liquid in the circulation, and then introducing tail gas into an alkaline tower 17 to purify and discharge the tail gas. Meanwhile, the barium liquid circulating heating unit is connected with the two evaporators 13, and when the barium liquid in the circulation is preheated, a valve at the connection position is opened and sent into the evaporators 13.
The exhaust port of the evaporator 13 is connected with a steam waste heat recovery unit 14, and the steam waste heat recovery unit 14 is used for collecting hot steam and heating a water circulation system in the crystallization process.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention, and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should still fall within the patent coverage of the present invention.
Claims (5)
1. An apparatus for utilizing surplus heat for evaporation, comprising: the device comprises a rotary kiln, wherein a rotary kiln combustion chamber heat energy utilization module, a rotary kiln flue gas utilization module and a rotary kiln shell radiation heat energy utilization module are connected to the rotary kiln;
the rotary kiln combustion chamber heat energy utilization module comprises a waste heat boiler flue gas induced draft fan (8), a first cyclone dust collector (9), a first waste heat boiler (10), a first heat exchanger (11) and a first evaporation circulation unit, wherein an air inlet of the first cyclone dust collector (9) is communicated with the rotary kiln combustion chamber (1), the first waste heat boiler (10) is connected between the first cyclone dust collector (9) and the waste heat boiler flue gas induced draft fan (8), an air outlet of the waste heat boiler flue gas induced draft fan (8) is communicated with an air inlet of the first heat exchanger (11), and the first evaporation circulation unit is connected with an liquid inlet and a liquid outlet of the first heat exchanger (11);
the rotary kiln flue gas utilization module comprises a second cyclone dust collector (4), a bag-type dust collector (5), a dust collector (6), a second waste heat boiler (22), a rotary kiln flue gas induced draft fan (7), a second heat exchanger (16) and a second evaporation circulation unit, wherein an air inlet of the dust collector (6) is connected with a rotary kiln flue gas discharge pipe (2), an air outlet of the dust collector (6), the second cyclone dust collector (4), the second waste heat boiler (22), the bag-type dust collector (5), the rotary kiln flue gas induced draft fan (7) and the second heat exchanger (16) are sequentially connected, and the second evaporation circulation unit is connected with an liquid inlet and a liquid outlet of the second heat exchanger (16);
the rotary kiln shell radiant heat energy utilization module comprises a rotary kiln shell heater (3) and a barium liquid circulating heating unit, wherein the rotary kiln shell heater (3) is installed on the upper side of the rotary kiln shell, and the rotary kiln shell heater (3) is connected with the barium liquid circulating heating unit.
2. The apparatus for evaporation using surplus heat according to claim 1, wherein: the first evaporation circulation unit is the same as the second evaporation circulation unit in structure, the first evaporation circulation unit comprises a forced circulation pump (12), an evaporator (13) and a slurry pump (15), and the forced circulation pump (12) and the slurry pump (15) are connected with the evaporator (13).
3. The apparatus for evaporation using surplus heat according to claim 1, wherein: the exhaust ports of the first heat exchanger (11) and the second heat exchanger (16) are connected with the air inlet of a third heat exchanger (18), and the exhaust port of the third heat exchanger (18) is connected with an alkali washing tower (17).
4. The apparatus for evaporation using surplus heat according to claim 3, wherein: the barium liquid circulation heating unit comprises a barium liquid buffer barrel (19), a circulating pump (20) and a third heat exchanger (18), the third heat exchanger (18) is connected with the barium liquid buffer barrel (19) and the circulating pump (20), and the rotary kiln shell heater (3) is connected with the barium liquid buffer barrel (19) and the circulating pump (20).
5. The apparatus for evaporation using surplus heat according to claim 2, wherein: and a steam waste heat recovery unit (14) is connected to an air outlet of the evaporator (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222914894.8U CN218653064U (en) | 2022-10-31 | 2022-10-31 | Device for evaporating by utilizing residual heat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222914894.8U CN218653064U (en) | 2022-10-31 | 2022-10-31 | Device for evaporating by utilizing residual heat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218653064U true CN218653064U (en) | 2023-03-21 |
Family
ID=85567903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222914894.8U Active CN218653064U (en) | 2022-10-31 | 2022-10-31 | Device for evaporating by utilizing residual heat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218653064U (en) |
-
2022
- 2022-10-31 CN CN202222914894.8U patent/CN218653064U/en active Active
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| GR01 | Patent grant | ||
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Effective date of registration: 20240103 Granted publication date: 20230321 |
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| PP01 | Preservation of patent right |