CN213237580U - High mass transfer high temperature flue gas rapid cooling device - Google Patents
High mass transfer high temperature flue gas rapid cooling device Download PDFInfo
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- CN213237580U CN213237580U CN202021676684.4U CN202021676684U CN213237580U CN 213237580 U CN213237580 U CN 213237580U CN 202021676684 U CN202021676684 U CN 202021676684U CN 213237580 U CN213237580 U CN 213237580U
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Abstract
The utility model relates to a high temperature flue gas rapid cooling technical field to the problem that hot area and cold district heat and mass transfer efficiency are low in the rapid cooling system, discloses a high mass transfer high temperature flue gas rapid cooling device, including the rapid cooling jar, rapid cooling tank deck portion is equipped with the quench cooler, rapid cooling tank bottom is connected with the brine waste tank that removes, the rapid cooling jar side is connected with rapid cooling brine tank that removes, and rapid cooling brine tank that removes still is connected with the quench cooler side simultaneously, and rapid cooling jar upper end side is equipped with the flue gas dust remover, the quench cooler side is connected with high-order water pitcher, and the quench cooler top is equipped with the high temperature flue gas import. Adopt water circulation liquid as quench liquid, add alkali lye and alkali wash brine, the double-circulating pump that parallels promotes liquid circulation for take place violent heat and mass transfer process after with the contact of high temperature flue gas, this cold charge structural design is optimized, rationally distributed, and the quench efficiency is high, and the quick dispersion of composition is handled, effectively reduces cooling aftertreatment cost, and the cooling method is simple high-efficient, and is energy-concerving and environment-protective.
Description
Technical Field
The utility model belongs to the technical field of high temperature flue gas rapid cooling technique and specifically relates to a high mass transfer high temperature flue gas rapid cooling device is related to.
Background
The quenching device is communicated with a high-temperature flue gas discharge pipeline generated after the incineration of the incinerator, the high-temperature flue gas discharged from the incinerator directly enters the quenching tank through a vertical quenching tank descending pipe, and the work of temperature reduction and flue gas component separation is completed in the quenching tank. The quenching tank has the advantages that the quenching tank has the cooling effect, and also has the effect of removing the mixed substance components in the flue gas as much as possible, so that the effective components in the flue gas can be reused, the content in the emission is reduced, the emission is easy to reach the standard, the energy is saved, the emission is reduced, and the post-treatment cost is reduced. Therefore, the method has important significance for the optimal design and reasonable layout of the quenching device and the improvement of the quenching efficiency.
Patent No. CN200680050265.6, entitled "smelt flue gas quench system", a quench system for cooling and/or cleaning smelt flue gas, which smelt flue gas is conducted co-currently with an acid containing liquid, in particular sulphuric acid, the quench system comprising: a gas inlet (51) through which smelting flue gas is supplied from the top; an annular channel (55) extending around the inner circumference of the upper venturi portion (52), the acid-containing liquid overflowing an overflow inner wall (57) of the annular channel into the upper venturi portion (52); and a transverse nozzle (58) arranged below the annular channel (55), through which additional acid-containing liquid is introduced. In order to provide a clear separation between the walls of the venturi section which is subject to dry/hot or wet cold conditions according to the invention, the inner diameter (D1) of the upper venturi section (52) is greater than the inner diameter (D2) of the gas inlet (51).
The disadvantages of the quenching system are that the dry/hot area and the wet/cold area are clearly separated, and the heat and mass transfer efficiency between the dry/hot area and the wet/cold area is low.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome the problem that hot area and cold district heat and mass transfer efficiency are low among the rapid cooling system, a high mass transfer high temperature flue gas rapid cooling device is provided, adopt hydrologic cycle liquid as rapid cooling liquid, add alkali lye and alkali wash salt solution, the double-circulating pump that parallels promotes liquid circulation, make and take place violent heat and mass transfer process after the contact of high temperature flue gas, this rapid cooling device structural design is optimized, rational layout, can cool off the high temperature flue gas fast, rapid cooling is efficient, the component is dispersed fast to be handled, effectively reduce cooling aftertreatment cost, the cooling method is simple high-efficient, energy-concerving and environment-protective.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a high mass transfer high temperature flue gas rapid cooling device, includes the quench jar, quench tank top is equipped with the quench cooler, quench tank bottom is connected with the brine waste water desalting jar, quench jar side is connected with quench brine desalting jar, and quench brine desalting jar still is connected with quench cooler side simultaneously, and quench jar upper end side is equipped with flue gas dust remover, quench cooler side is connected with high-order water pitcher, and the quench cooler top is equipped with the high temperature flue gas import.
The utility model discloses a cooling working process does: high-temperature flue gas coming out from an incinerator directly enters a quenching tank through a vertical quenching tank descending pipe, the quenching tank adopts water circulation liquid as quenching liquid, the water circulation liquid is pumped to the quenching tank through a quenching circulation pump, the water circulation liquid is derived from first-level alkaline washing brine, waste brine from an overflow tank and the like, the quenching liquid in the quenching tank is pressurized through the quenching circulation pump and then is conveyed to a quencher at the outlet of the incinerator, and after the quenching liquid is contacted with the high-temperature flue gas, a violent heat and mass transfer process is generated, and NaCl, Na and the like in the flue gas2SO4Is dissolved by the quenching liquid, and the moisture in the quenching liquid is evaporated into the flue gas. The flue gas from the quench tank contains a large amount of water vapor and trace amounts of sodium salt particles and acid gases which are not absorbed in the quench tank, in addition to non-condensable gases. The flue gas is introduced into a Venturi flue gas dust remover from a quenching tank, and is preliminarily washed and dedusted in the Venturi dust remover. The high-level water tank can also supply circulating liquid in real time according to the demand condition of the quenching liquid in the quenching tank, so that the cooling effect and the component separation effect of the quenching tank and the cooler are good.
Preferably, the side surface of the quenching tank is also respectively connected with a waste brine coming from an overflow tank and a liquid caustic soda PW input end which are connected in parallel.
The overflow tank can receive the brine waste liquid overflowing from the quencher and the quenching tank in real time, so that the quenching liquid in the quenching tank is prevented from being too much, the contact heat transfer effect of the quenching liquid and high-temperature flue gas is prevented from being influenced, and the cooling efficiency is reduced; NaOH solution with the mass fraction of 32% is filled in the liquid caustic soda tank, and the aqueous caustic soda is added into the quenching tank, so that acidic gas and particle components in the flue gas can be better absorbed and separated, and a chemical reaction is carried out to generate corresponding salt solution; the input end of the liquid caustic soda PW acquires relevant parameter information on a caustic soda conveying pipeline in real time so as to control the on-off of the conveying of the caustic soda in time, and the purposes of achieving the optimal separation reaction effect, reducing the flue gas post-treatment process and reasonably utilizing raw materials are achieved.
Preferably, the system further comprises a quenching liquid circulation loop, wherein one end of the quenching liquid circulation loop is connected to the side surface of the quenching tank, the other end of the quenching liquid circulation loop is connected to the side surface of the quenching device and a pipeline between the high-level water tank and the quenching device in a branching manner, and a primary alkali washing brine heat exchanger is further connected to the pipeline between the high-level water tank and the quenching device.
Preferably, the quenching liquid circulation loop comprises a first branch and a second branch which are connected in parallel, the first branch is provided with a first quenching circulation pump, and the second branch is provided with a second quenching circulation pump.
Preferably, the first quenching circulating pump and the second quenching circulating pump are simultaneously connected with a machine seal flushing water overflow tank, and the first quenching circulating pump and the second quenching circulating pump are also connected with a circulating pump PW input end.
Quench liquid circulation circuit is in time carrying the quench cooler with quench liquid in, and its break-make that needs to realize the quench liquid supply according to the real-time conditions in quench cooler and the quench tank, this quench liquid circulation circuit has collected and has overflowed moisture such as brine waste and alkali wash brine, has realized the cyclic utilization of waste liquid, has reached timely circulation, high-efficient refrigerated technological effect. Quench liquid circulation circuit adopts two quench circulating pumps simultaneous working including parallelly connected first branch and second branch, can the wrong peak transport quench liquid, guarantees the transport efficiency of quench liquid, and the equipment maintenance of being convenient for can increase the circulation flow of coolant liquid when the simultaneous working, practices thrift the transport time, promotes the circulation efficiency of quench liquid.
Preferably, the quenching liquid circulation loop further comprises a waste brine overflow tank, and the waste brine overflow tank is respectively connected to the pipelines at two ends of the first quenching circulation pump of the first branch and the second quenching circulation pump of the second branch.
Because there is quench liquid circulation circuit including parallelly connected first branch and second branch, consequently, can spill over from two branch roads when the waste brine in the quench tank overflows, carry the overflow tank in, greatly promoted the overflow efficiency of system and the mass transfer efficiency between the dry and wet in the quench cooler.
Preferably, the side surface of the quencher is also connected with the input end of the quencher PW and the input end of the quencher DW which are connected in parallel.
Preferably, a waste brine PW input end is arranged on a connecting pipeline between the bottom of the quenching tank and the waste brine desalting tank.
Preferably, the high-level water tank is further connected with a high-level water tank PW input end and a high-level water tank DW input end which are connected in parallel.
The PW input end and the DW input end are used for acquiring real-time process parameters including temperature, pressure, components and other process parameters on corresponding pipelines or equipment, so that real-time monitoring of process acceptance numbers in a system is realized, timely acquisition and accurate control are realized, and the overall cooling efficiency and the impurity removal rate of the system are improved.
Therefore, the utility model discloses following beneficial effect has:
(1) the cooling device has the advantages that the structural design is optimized and reasonable in layout, the high-temperature flue gas can be rapidly cooled, the quenching efficiency is high, the components are rapidly dispersed and treated, the treatment cost after cooling is effectively reduced, the cooling mode is simple and efficient, and the cooling device is energy-saving and environment-friendly;
(2) the quenching liquid circulation loop comprises a first branch and a second branch which are connected in parallel, two quenching circulating pumps are adopted to work simultaneously, the quenching liquid can be conveyed in a staggered mode, the conveying efficiency of the quenching liquid is guaranteed, equipment maintenance is facilitated, the circulation flow of the cooling liquid can be increased when the quenching liquid circulation loop works simultaneously, the conveying time is saved, the recycling of waste liquid is realized, and the technical effects of timely circulation and efficient cooling are achieved;
(3) the PW input end and the DW input end are used for acquiring real-time process parameters including temperature, pressure, components and other process parameters on corresponding pipelines or equipment, so that real-time monitoring of process acceptance numbers in a system is realized, timely acquisition and accurate control are realized, and the overall system stability, cooling efficiency and impurity removal rate of the system are improved.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
In the figure: 1. a quenching tank; 2. a quencher; 3. a high-level water tank; 4. a primary alkali washing brine heat exchanger; 5. the waste brine comes from an overflow tank; 6. waste brine is sent to an overflow tank; 7. the input end of a circulating pump PW; 8. removing machine seal flushing water from an overflow tank; 9. desalting the waste brine in a desalting tank; 10. a waste brine PW input end; 11. a sharp quenching brine desalting tank; 12. inputting liquid caustic soda PW; 13. a liquid caustic soda tank; 14. the input end of a quencher PW; 15. a DW input end of the quencher; 16. a flue gas dust remover; 17. a high temperature flue gas inlet; 18. a quench liquid circulation loop; 19. a first branch; 19.1, a first quenching circulating pump; 20. a second branch; 20.1, a second quenching circulating pump; 21. an input end of a high-level water tank PW; 22. and a DW input end of the high-level water tank.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
Example 1
In the embodiment shown in fig. 1, a high mass transfer high temperature flue gas quenching device comprises a quenching tank 1, wherein a quencher 2 is arranged at the top of the quenching tank 1, a waste brine desalting tank 9 is connected to the bottom of the quenching tank 1, a quenching brine desalting tank 11 is connected to the side surface of the quenching tank 1, the quenching brine desalting tank 11 is also connected to the side surface of the quencher 2, a flue gas dust remover 16 is arranged on the side surface of the upper end of the quenching tank 1, a high-level water tank 3 is connected to the side surface of the quencher 2, and a high temperature flue gas inlet 17 is arranged at the top of the quencher 2. The side surface of the quenching tank 1 is also respectively connected with a waste brine from an overflow tank 5, a liquid caustic soda tank 13 and a liquid caustic soda PW input end 12 which are connected in parallel; the side surface of the quencher 2 is also connected with a quencher PW input end 14 and a quencher DW input end 15 which are connected in parallel; a waste brine PW input end 10 is arranged on a connecting pipeline between the bottom of the quenching tank 1 and the waste brine desalting tank 9; the high-level water tank 3 is also connected with a high-level water tank PW input end 21 and a high-level water tank DW input end 22 which are connected in parallel.
The system also comprises a quenching liquid circulating loop 18, wherein one end of the quenching liquid circulating loop is connected to the side surface of the quenching tank 1, the other end of the quenching liquid circulating loop is connected to the side surface of the quenching device 2 and a pipeline between the high-position water tank 3 and the quenching device 2 in a branching manner, and a primary alkali-washing brine heat exchanger 4 is connected to the pipeline between the high-position water tank 3 and the quenching device 2; the quenching liquid circulation loop 18 comprises a first branch 19 and a second branch 20 which are connected in parallel, wherein a first quenching circulation pump 19.1 is arranged on the first branch 19, and a second quenching circulation pump 20.1 is arranged on the second branch 20; the first quenching circulating pump 19.1 and the second quenching circulating pump 20.1 are simultaneously connected with a machine seal flushing water overflow tank 8, and the first quenching circulating pump 19.1 and the second quenching circulating pump 20.1 are also connected with a circulating pump PW input end 7; the quench liquid circulation circuit 18 further comprises a spent brine overflow tank 6, the spent brine overflow tank 6 being connected to the pipes at both ends of the first quench circulation pump 19.1 of the first branch 19 and the second quench circulation pump 20.1 of the second branch 20, respectively.
Each connecting branch is provided with a temperature monitoring instrument, a pressure monitoring instrument, a flow rate monitoring instrument and the like, and is also provided with an on-off valve and other action units.
The method comprises the following specific implementation steps:
high-temperature flue gas from an incinerator directly enters a quenching tank through a vertical quenching tank down pipe, the quenching tank adopts water circulation liquid as quenching liquid, the water circulation liquid is pumped to the quenching tank through a quenching circulation pump, and the water circulation liquid is derived from first-level alkaline washing brine and waste water from an overflow tankBrine and water in a high-level water tank, quenching liquid in a quenching tank is pressurized by a quenching circulating pump and then is delivered to a quencher at the outlet of an incinerator, NaOH solution with the mass fraction of 32 percent is also added into the quenching tank, the solution mixture of various components is used as the quenching liquid, the mode of directly mixing liquid/wet and smoke/dry enables the violent heat and mass transfer process to be generated after the contact with high-temperature flue gas, and finally NaCl, Na and NaCl in the flue gas2SO4Is dissolved by the quenching liquid, the moisture in the quenching liquid is evaporated into the flue gas, and a large amount of water vapor and trace sodium salt particles and acid gas which are not absorbed in the quenching tank are contained in the flue gas. This flue gas is introduced into in the venturi flue gas dust remover from the quench tank and is carried out preliminary washing dust removal processing, and the waste brine is discharged waste brine desalting jar from the bottom of quench tank, and unnecessary quench liquid overflows along quench liquid circulation system, discharges into waste brine and goes to overflow tank.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The utility model provides a high mass transfer high temperature flue gas rapid cooling device, characterized by, includes quench tank (1), quench tank (1) top is equipped with quench cooler (2), quench tank (1) bottom is connected with brine waste desalting jar (9), quench tank (1) side is connected with quench brine desalting jar (11), and quench brine desalting jar (11) still are connected with quench cooler (2) side simultaneously, and quench tank (1) upper end side is equipped with flue gas dust remover (16), quench cooler (2) side is connected with high-order water pitcher (3), and quench cooler (2) top is equipped with high temperature flue gas import (17).
2. The quenching device for high-mass-transfer high-temperature flue gas as claimed in claim 1, wherein the side of the quenching tank (1) is further connected with waste brine from an overflow tank (5), a liquid caustic soda tank (13) and a liquid caustic soda PW input end (12) in parallel respectively.
3. The quenching device for high mass transfer and high temperature flue gas as claimed in claim 1, further comprising a quenching liquid circulation loop (18), wherein one end of the quenching liquid circulation loop is connected to the side surface of the quenching tank (1), the other end of the quenching liquid circulation loop is connected to the side surface of the quenching device (2) and a pipeline between the high-level water tank (3) and the quenching device (2), and a primary alkali-washing brine heat exchanger (4) is further connected to the pipeline between the high-level water tank (3) and the quenching device (2).
4. The quenching device for the high-mass-transfer high-temperature flue gas as claimed in claim 3, wherein the quenching liquid circulation loop (18) comprises a first branch (19) and a second branch (20) which are connected in parallel, a first quenching circulation pump (19.1) is arranged on the first branch (19), and a second quenching circulation pump (20.1) is arranged on the second branch (20).
5. The quenching device for high-mass-transfer high-temperature flue gas as claimed in claim 4, wherein the first quenching circulating pump (19.1) and the second quenching circulating pump (20.1) are simultaneously connected with machine seal flushing water to an overflow tank (8), and the first quenching circulating pump (19.1) and the second quenching circulating pump (20.1) are also connected with a circulating pump PW input end (7).
6. The quenching device for high mass transfer and high temperature flue gas as claimed in claim 3 or 4, wherein the quenching liquid circulation loop (18) further comprises a spent brine overflow tank (6), and the spent brine overflow tank (6) is respectively connected to the pipeline at two ends of the first quenching circulation pump (19.1) of the first branch (19) and the pipeline at two ends of the second quenching circulation pump (20.1) of the second branch (20).
7. The quenching device for high-mass-transfer high-temperature flue gas as claimed in claim 1 or 3, wherein the side of the quencher (2) is further connected with the input end (14) of a quencher PW and the input end (15) of a quencher DW which are connected in parallel.
8. The high mass transfer high temperature flue gas quenching device according to claim 1 or 2, characterized in that a waste brine PW input end (10) is arranged on a connecting pipeline between the bottom of the quenching tank (1) and the waste brine desalting tank (9).
9. The quenching device for high mass transfer and high temperature flue gas as claimed in claim 1, wherein the high-level water tank (3) is further connected with a high-level water tank PW input end (21) and a high-level water tank DW input end (22) which are connected in parallel.
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| CN202021676684.4U CN213237580U (en) | 2020-08-12 | 2020-08-12 | High mass transfer high temperature flue gas rapid cooling device |
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| CN202021676684.4U CN213237580U (en) | 2020-08-12 | 2020-08-12 | High mass transfer high temperature flue gas rapid cooling device |
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| CN213237580U true CN213237580U (en) | 2021-05-18 |
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