CN110975568A - Utilize boats and ships exhaust-gas treatment system of PCHE vaporizer cooling - Google Patents
Utilize boats and ships exhaust-gas treatment system of PCHE vaporizer cooling Download PDFInfo
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- CN110975568A CN110975568A CN201911181137.0A CN201911181137A CN110975568A CN 110975568 A CN110975568 A CN 110975568A CN 201911181137 A CN201911181137 A CN 201911181137A CN 110975568 A CN110975568 A CN 110975568A
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/343—Heat recovery
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/346—Controlling the process
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/502—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific solution or suspension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The invention discloses a ship waste gas treatment system for cooling by utilizing a PCHE gasifier, which relates to the technical field of acidic flue gas treatment and aims to solve the technical problem of low overall efficiency of flue gas reaction, and adopts the technical scheme that a flue gas channel is communicated with a jet pump, the jet pump comprises a hollow tubular shell with two open ends, one end of the shell is a sucked fluid inlet, the other end of the shell is a sucked fluid outlet, a spray pipe is arranged and fixed on the side wall of the shell in a penetrating way, the spray pipe is hollow and has two open ends, one end of the spray pipe is a working fluid inlet, the other end of the spray pipe is a working fluid outlet, the working fluid outlet is positioned in the shell and faces the sucked fluid outlet, the working fluid inlet is positioned outside the shell and is communicated with and fixed with an alkali liquor channel, so that flue gas can be mixed with alkali liquor in advance in the process of conveying in the flue gas channel to form turbid liquid of the flue gas and the, in addition, the plate heat exchanger is adopted to cool the flue gas, so that the method is more efficient.
Description
Technical Field
The invention relates to the technical field of acidic flue gas treatment, in particular to a ship waste gas treatment system utilizing a PCHE gasifier to reduce the temperature.
Background
A marine exhaust gas treatment system is an apparatus for treating exhaust gas.
A waste gas treatment system among the prior art refers to fig. 4 and shows, it includes desulfurizing tower 1, and the bottom intercommunication of desulfurizing tower 1 lateral wall has air inlet 11, and the top intercommunication of desulfurizing tower 1 lateral wall has gas outlet 12, and desulfurizing tower 1 is inside to be equipped with spray set 14, and spray set 14 runs through the water pipe of having seted up a plurality of orifices for the lateral wall. During its use, directly be connected flue gas passageway 2 and air inlet 11, the flue gas flows into desulfurizing tower 1 from flue gas passageway 2 and air inlet 11 in, utilizes spray set 14 to spray alkali lye and makes flue gas and alkali lye take place to mix, carries out acid-base neutralization, finally discharges the waste gas of compliance from gas outlet 12.
However, the flue gas can only be conveyed from the flue gas channel 2 to the gas inlet 11 and then fed into the desulfurizing tower 1 to start the reaction, so that the overall efficiency of the flue gas reaction is low, and the improvement is needed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a ship waste gas treatment system utilizing a PCHE gasifier for cooling, which has the advantage that acid-base neutralization reaction can be carried out in the process of conveying flue gas in a flue gas channel, so that the overall efficiency is improved.
In order to achieve the purpose, the invention provides the following technical scheme:
a ship waste gas treatment system utilizing a PCHE gasifier to cool comprises a desulfurizing tower, wherein an air inlet is formed in the bottom of the side wall of the desulfurizing tower, an air outlet is formed in the top of the side wall of the desulfurizing tower, a flue gas channel is fixedly communicated with the air inlet and is provided with an installation notch, a jet pump is arranged at the installation notch and comprises a hollow tubular shell with two open ends, one end of the shell is an absorbed fluid inlet, the other end of the shell is an absorbed fluid outlet, the absorbed fluid inlet and the absorbed fluid outlet are respectively fixed on the two side walls of the installation notch, the absorbed fluid outlet is arranged towards the desulfurizing tower, a spray pipe is arranged on the side wall of the shell in a penetrating manner and is fixed with the spray pipe, the spray pipe is hollow and has two open ends, one end of the spray pipe is a working fluid inlet, the other end of the spray pipe is a working fluid outlet, the working fluid outlet is positioned in the shell and is arranged towards the, the working fluid inlet is positioned outside the shell and is communicated with and fixed with a lye channel.
Through adopting above-mentioned technical scheme, the flue gas flows to jet pump department along with the flue gas passageway, alkali lye flows to jet pump department along with the alkali lye passageway this moment, alkali lye gets into the spray tube from the working fluid entry, and spout from the working fluid export, the flue gas that will drive in the flue gas passageway at this moment under the atmospheric pressure effect flows along with alkali lye at a high speed, and make flue gas and alkali lye fully mix, thereby can make the flue gas can mix in advance with alkali lye at the in-process that the flue gas carried in the flue gas passageway, form the turbid liquid of flue gas and alkali lye, thereby effectively promoted the overall efficiency of flue gas reaction. The mixed turbid liquid of the flue gas and the alkali liquor finally flows into the desulfurizing tower along with the flue gas channel to further carry out neutralization reaction, thereby further improving the desulfurizing effect.
Furthermore, one end of the flue gas channel, which is far away from the desulfurizing tower, is communicated with and fixed with a hollow PCHE gasifier, the side wall of the PCHE gasifier is provided with a flue gas inlet, the side wall of the PCHE gasifier is provided with a liquefied natural gas inlet and a liquefied natural gas outlet, and a heat exchange tube is communicated with and fixed between the liquefied natural gas inlet and the liquefied natural gas outlet.
Through adopting above-mentioned technical scheme, during the use, carry LNG (liquefied natural gas) to liquefied natural gas import department, flow through the heat exchange tube afterwards and finally export from the liquefied natural gas export, simultaneously, import the flue gas PCHE vaporizer from the flue gas import to finally flow into the flue gas passageway. In the process, the high-temperature flue gas carries out heat exchange with the outer side wall of the heat exchange tube in the PCHE gasifier, the high-temperature flue gas can provide a gasification heat source for LNG, and the LNG can provide a cooling cold source for the flue gas, so that the waste heat of the high-temperature flue gas is effectively utilized, the gasification of the LNG is promoted, the temperature of the flue gas can be effectively reduced through the LNG gasification heat absorption principle, and the acid-base neutralization reaction of subsequent high-temperature flue gas is promoted.
Furthermore, the bottom wall of the desulfurization tower is communicated and fixed with a liquid discharge channel, and one end of the alkali liquor channel, which is far away from the working fluid inlet, is communicated with the liquid discharge channel.
By adopting the technical scheme, the alkali liquor which is at the bottom of the inner cavity of the desulfurizing tower and participates in the reaction can flow into the alkali liquor channel along with the liquid discharge channel, so that the circulation of the alkali liquor is realized, the alkali liquor which participates in the reaction is further utilized, and the utilization efficiency of the alkali liquor is improved.
Furthermore, the side wall of the alkali liquor channel is communicated with and fixed with an alkali liquor supplementing channel, and the alkali liquor supplementing channel is provided with a first valve.
By adopting the technical scheme, when new alkali liquor needs to be additionally added, the first valve is opened, the alkali liquor supplementing channel is communicated with an external source, and then the new alkali liquor can be timely conveyed into the alkali liquor channel along with the alkali liquor supplementing channel so as to supplement the new alkali liquor, so that the new alkali liquor is conveyed into the alkali liquor channel along with the alkali liquor after the new alkali liquor participates in the reaction, and the supply of the alkali liquor is realized;
when new alkali liquor does not need to be added, the first valve is closed, so that the alkali liquor after the reaction can be independently conveyed to supply the alkali liquor, whether the new alkali liquor is supplemented or not can be selected according to actual conditions, and the method is more flexible.
And furthermore, the alkali liquor channel is provided with a second valve, and the second valve is positioned on one side, facing the desulfurization tower, of the joint of the alkali liquor supplementing channel and the alkali liquor channel.
By adopting the technical scheme, whether the supply of the alkali liquor contains the alkali liquor after the reaction can be controlled by opening and closing the valve II, when the high-concentration alkali liquor is needed, the valve II can be selected to be closed, and the valve I is opened, so that the new alkali liquor can be independently conveyed to realize the supply of the alkali liquor.
Furthermore, the tapping channel is provided with a third valve, and the third valve is positioned on one side of the joint of the tapping channel and the alkali liquor channel, which faces away from the desulfurizing tower.
Through adopting above-mentioned technical scheme, when the alkali lye after participating in the reaction in the desulfurizing tower was discharged to needs, can close valve two, open valve three, can discharge the alkali lye after participating in the reaction in the desulfurizing tower, convenient operation to inside the alkali lye of renewal to the desulfurizing tower, maintain the working effect of desulfurizing tower.
Further, the alkali liquor passageway includes the preceding passageway that links to each other with the tapping passageway and the back passageway that links to each other with the working fluid entry, be equipped with hollow temporary storage tank between preceding passageway and the back passageway, the one end that the desulfurizing tower was kept away from to the preceding passageway is with temporary storage tank fixed connection and be linked together, the back passageway is worn to establish to temporary storage tank inside and the back passageway is kept away from the one end of working fluid entry and is located the bottom of temporary storage tank inner chamber, the back passageway is equipped with the drive water pump.
Through adopting above-mentioned technical scheme, alkali lye after the participation reaction in the tapping passageway, can carry to the storage tank temporarily along with the preceding passageway earlier in, carry out temporary storage, when the alkali lye after the needs use and participate in the reaction carries out alkali lye and supplies with, the accessible back channel will be temporarily the alkali lye after the participation reaction of storage tank inner chamber and extract, in order to carry out the alkali lye and supply with, owing to there is the storage tank to carry out temporary storage temporarily, can make the process of back channel extraction alkali lye more smooth and easy, the difficult situations such as bubble appear, the stability of the in-process of the alkali lye after the participation reaction of pumping is improved.
And furthermore, the rear channel is provided with a valve IV, and the valve IV is positioned on one side, facing the desulfurization tower, of the joint of the alkali liquor replenishing channel and the rear channel.
By adopting the technical scheme, the third valve can be opened, and the fourth valve can be closed to realize the temporary storage of the alkali liquor participating in the reaction in the temporary storage tank, and after the alkali liquor is stored to a certain height, the third valve is opened, and then the alkali liquor can be stably supplied.
Furthermore, the side wall of the flue gas channel is fixed and communicated with a detection tube, and a plug is inserted into one end of the detection tube, which is back to the flue gas channel.
Through adopting above-mentioned technical scheme, in the normal transportation process of flue gas in flue gas passageway, with end cap screw in test tube, can seal the test tube afterwards, can make the flue gas can be stably carried in flue gas passageway, can not leak gas, when needs detect the pH value of flue gas in flue gas passageway, can unscrew the end cap to carry out sample detection, convenient operation to the mixed liquid of the flue gas of carrying in the flue gas passageway and alkali lye.
Further, the plug comprises a rod body and an elastic sleeve which is sleeved on and fixed on the outer side of the rod body, the rod body is in clearance fit with the inner wall of the detection tube, and the elastic sleeve is in interference fit with the inner wall of the detection tube.
Through adopting above-mentioned technical scheme, can rotate after the elastic sleeve compression deformation go into in the test tube, elastic sleeve and test tube inner wall interference fit afterwards can make the gas tightness of the clearance department of end cap and test tube stronger for test tube department is more difficult for leaking gas, and stability is higher.
In conclusion, the invention has the following beneficial effects:
1. the bottom of the side wall of the desulfurizing tower is provided with an air inlet, the top of the side wall of the desulfurizing tower is provided with an air outlet, the air inlet is fixedly communicated with a flue gas channel, the flue gas channel is provided with an installation gap, the installation gap is provided with a jet pump, the jet pump comprises a hollow tubular shell with two open ends, one end of the shell is a sucked fluid inlet, the other end of the shell is a sucked fluid outlet, the sucked fluid inlet and the sucked fluid outlet are respectively fixed on the two side walls of the installation gap, the sucked fluid outlet faces the desulfurizing tower, the side wall of the shell is penetrated and fixed with a spray pipe, the spray pipe is hollow and has two open ends, one end of the spray pipe is a working fluid inlet, the other end of the spray pipe is a working fluid outlet, the working fluid outlet is positioned in the shell and faces the sucked fluid outlet, and the working fluid inlet is positioned; the flue gas flows to jet pump department along with the flue gas passageway, and alkali lye flows to jet pump department along with the alkali lye passageway this moment, and alkali lye gets into the spray tube from the working fluid entry to spout from the working fluid export, will drive the flue gas in the flue gas passageway along with alkali lye high-speed flow under the atmospheric pressure effect this moment, and make flue gas and alkali lye fully mix, thereby can make the flue gas can mix in advance with alkali lye at the in-process that the flue gas carried in the flue gas passageway, form the turbid liquid of flue gas and alkali lye, thereby effectively promoted the overall efficiency of flue gas reaction. The mixed turbid liquid of the flue gas and the alkali liquor finally flows into the desulfurizing tower along with the flue gas channel to further carry out neutralization reaction, so that the desulfurizing effect is further improved;
2. the heat exchange tube type desulfurization tower adopts the structure that one end of a flue gas channel far away from a desulfurization tower is communicated and fixed with a hollow PCHE gasifier, the side wall of the PCHE gasifier is provided with a flue gas inlet, the side wall of the PCHE gasifier is provided with a liquefied natural gas inlet and a liquefied natural gas outlet, and a heat exchange tube is communicated and fixed between the liquefied natural gas inlet and the liquefied natural gas outlet; when the LNG vaporizer is used, LNG (liquefied natural gas) is conveyed to the liquefied natural gas inlet, then flows through the heat exchange tube and is finally output from the liquefied natural gas outlet, and meanwhile, flue gas is input into the PCHE vaporizer from the flue gas inlet and finally flows into the flue gas channel. In the process, the high-temperature flue gas carries out heat exchange with the outer side wall of the heat exchange tube in the PCHE gasifier, the high-temperature flue gas can provide a gasification heat source for LNG, and the LNG can provide a cooling cold source for the flue gas, so that the waste heat of the high-temperature flue gas is effectively utilized, the gasification of the LNG is promoted, the temperature of the flue gas can be effectively reduced through the LNG gasification heat absorption principle, and the acid-base neutralization reaction of subsequent high-temperature flue gas is promoted.
Drawings
FIG. 1 is a schematic structural diagram of the present embodiment;
fig. 2 is a schematic structural diagram for showing a connection relationship between the jet pump and the flue gas channel in the present embodiment;
FIG. 3 is an enlarged view taken at A in FIG. 1;
fig. 4 is a background art drawing.
In the figure: 1. a desulfurizing tower; 11. an air inlet; 12. an air outlet; 13. a tapping channel; 14. a spraying device; 2. a flue gas channel; 20. installing a notch; 3. a PCHE gasifier; 31. a flue gas inlet; 32. a liquefied natural gas inlet; 33. a liquefied natural gas outlet; 34. a heat exchange pipe; 4. a jet pump; 41. a housing; 42. a sucked fluid inlet; 43. a suctioned fluid outlet; 44. a nozzle; 45. a working fluid inlet; 46. a working fluid outlet; 5. an alkali liquor channel; 51. a front channel; 52. a back channel; 53. a temporary storage tank; 54. driving a water pump; 55. an alkali liquor replenishing channel; 61. a first valve; 62. a second valve; 63. a third valve; 64. a fourth valve; 7. a detection tube; 8. a plug; 81. a rod body; 82. an elastic sleeve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
a ship waste gas treatment system utilizing a PCHE gasifier to cool comprises a desulfurizing tower 1, wherein a gas inlet 11 is formed in the bottom of the side wall of the desulfurizing tower 1, and a gas outlet 12 is formed in the top of the side wall of the desulfurizing tower 1 in an integrated mode. A flue gas channel 2 is fixed at the position of the air inlet 11 through a flange, and the flue gas channel 2 is communicated with the air inlet 11. The desulfurizing tower 1 can store alkali liquor (which overflows the air inlet 11) with a certain height in advance so as to prevent the fume and the turbid liquid of the alkali liquor from splashing after entering the desulfurizing tower 1.
Referring to fig. 1, a hollow PCHE gasifier 3 (Printed Circuit Heat Exchanger) is fixed to one end of the flue gas channel 2, which is far away from the desulfurizing tower 1, through a flange, and the PCHE gasifier 3 is communicated with the flue gas channel 2. The side wall of the PCHE gasifier 3 is provided with a flue gas inlet 31, a liquefied natural gas inlet 32 and a liquefied natural gas outlet 33, a heat exchange tube 34 is fixedly welded between the liquefied natural gas inlet 32 and the liquefied natural gas outlet 33, and the heat exchange tube 34 is communicated with the liquefied natural gas inlet 32 and the liquefied natural gas outlet 33.
Referring to fig. 1, the flue gas channel 2 is provided with an installation gap 20, and the installation gap 20 is fixedly connected with the jet pump 4 through a flange. The bottom wall of the desulfurizing tower 1 is communicated with and fixed with a liquid discharging channel 13, the side wall of the liquid discharging channel 13 is fixedly welded with an alkali liquor channel 5, and one end, far away from the liquid discharging channel 13, of the alkali liquor channel 5 is connected with the jet pump 4. The tapping channel 13 is connected with a third valve 63 through a flange, and the third valve 63 is positioned at one side of the joint of the tapping channel 13 and the alkali liquor channel 5, which is back to the desulfurizing tower 1.
Referring to FIG. 1, the lye channel 5 comprises a front channel 51 connected to the tapping channel 13 and a rear channel 52 connected to the jet pump 4. A hollow temporary storage tank 53 is arranged between the front channel 51 and the rear channel 52, one end, far away from the desulfurizing tower 1, of the front channel 51 is fixedly welded with the temporary storage tank 53, the front channel 51 is communicated with the inner cavity of the temporary storage tank 53, and the front channel 51 is connected with a second valve 62 through a flange.
Referring to fig. 1, the rear channel 52 is inserted into the temporary storage tank 53 and is fixedly connected to the temporary storage tank 53 by welding. The end of the rear channel 52 remote from the jet pump 4 is located at the bottom of the inner cavity of the temporary storage tank 53. The rear passage 52 is flanged with a drive water pump 54. The side wall of the rear channel 52 is fixedly provided with an alkali liquor replenishing channel 55 by welding, and the alkali liquor replenishing channel 55 is communicated with the alkali liquor channel 5. The alkali liquor replenishing channel 55 is connected with a first valve 61 through a flange. The rear channel 52 is connected with a valve IV 64 through a flange, and the valve IV 64 is positioned at the side, facing the desulfurizing tower 1, of the joint of the lye supplementing channel 55 and the rear channel 52.
Referring to fig. 2, the jet pump 4 includes a hollow tubular casing 41 having both open ends, one end of the casing 41 is a sucked fluid inlet 42, the other end is a sucked fluid outlet 43, the sucked fluid inlet 42 and the sucked fluid outlet 43 are fixed to the inner side wall of the mounting notch 20 by flanges, and the sucked fluid outlet 43 is provided toward the desulfurization tower 1. A spray pipe 44 is fixedly welded to the side wall of the housing 41, the spray pipe 44 is hollow and has two open ends, one end of the spray pipe 44 is a working fluid inlet 45, and the other end is a working fluid outlet 46. The working fluid outlet 46 is located inside the housing 41 and is arranged towards the sucked fluid outlet 43, and the working fluid inlet 45 is located outside the housing 41 and is fixedly connected with the rear channel 52 through a flange, so as to realize the connection of the lye channel 5 with the jet pump 4.
Referring to fig. 3, a hollow detection tube 7 is welded and fixed on the side wall of the flue gas channel 2, and the detection tube 7 is communicated with the inner cavity of the flue gas channel 2. The plug 8 is inserted into a thread at one end of the detection tube 7, which faces away from the flue gas channel 2, the plug 8 comprises a rod body 81 and an elastic sleeve 82, and the elastic sleeve 82 is sleeved and adhesively fixed on the outer side of the rod body 81. The rod 81 is in clearance fit with the inner wall of the detection tube 7, and the elastic sleeve 82 is in interference fit with the inner wall of the detection tube 7.
The working principle is as follows: when the LNG (liquefied natural gas) gasification device is used, LNG (liquefied natural gas) is conveyed to the liquefied natural gas inlet 32, then flows through the heat exchange tube 34 and is finally output from the liquefied natural gas outlet 33, and meanwhile, flue gas is input into the PCHE gasifier 3 from the flue gas inlet 31 and finally flows into the flue gas channel 2. In the process, the high-temperature flue gas carries out heat exchange with the outer side wall of the heat exchange tube 34 in the PCHE gasifier 3, the high-temperature flue gas can provide a gasification heat source for LNG, and the LNG can provide a cooling cold source for the flue gas, so that the waste heat of the high-temperature flue gas is effectively utilized, the gasification of the LNG is promoted, the temperature of the flue gas can be effectively reduced through the LNG gasification heat absorption principle, and the acid-base neutralization reaction of subsequent high-temperature flue gas is promoted.
High temperature flue gas is from the cooling back, flows to jet pump 4 department along with flue gas passageway 2, and alkali lye gets into spray tube 44 from working fluid entry 45 to spout from working fluid export 46, will drive the flue gas in flue gas passageway 2 along with alkali lye high-speed flow under the atmospheric pressure effect this moment, and make flue gas and alkali lye fully mix, thereby can make the in-process that the flue gas carried in flue gas passageway 2 can mix in advance with alkali lye, form the turbid liquid of flue gas and alkali lye, thereby effectively promoted the overall efficiency of flue gas reaction. The mixed turbid liquid of the flue gas and the alkali liquor finally flows into the desulfurizing tower 1 along with the flue gas channel 2, and further neutralization reaction is carried out, so that the desulfurizing effect is further improved.
The alkali liquor after the reaction in the desulfurizing tower 1 can be treated by the following two ways:
1. the second valve 62 is opened, and the third valve 63 is closed; at this time, the alkali solution after the reaction in the desulfurizing tower 1 flows into the temporary storage tank 53 along with the front channel 51, and is temporarily stored.
2. The second valve 62 is closed, and the third valve 63 is opened; at this time, the alkali liquor after the reaction in the desulfurizing tower 1 is discharged along with the liquid discharging channel 13.
3. The second valve 62 is closed, and the third valve 63 is closed; at this time, the alkali liquor after the reaction in the desulfurizing tower 1 is temporarily stored in the desulfurizing tower 1.
Wherein, the supply of the alkali liquor is realized by the following three conditions:
1. the first valve 61 is opened, and the fourth valve 64 is closed; at this time, new alkali liquor flows into the alkali liquor channel 5 from the alkali liquor replenishing channel 55 and is reserved at the working fluid inlet 45, so as to realize alkali liquor supply.
2. The first valve 61 is opened, the fourth valve 64 is opened, and the driving water pump 54 is opened; at this time, the new alkali liquid and the part of the alkali liquid temporarily stored in the temporary storage tank 53 after the reaction are jointly conveyed to the working fluid inlet 45 along with the alkali liquid channel 5, so as to realize the supply of the alkali liquid.
3. The first valve 61 is closed, the fourth valve 64 is opened, and the driving water pump 54 is opened; at this time, the alkali liquor temporarily stored in the temporary storage tank 53 after the reaction is carried to the working fluid inlet 45 along with the alkali liquor channel 5, so as to realize the supply of the alkali liquor.
In addition, under the condition that flue gas passageway 2 is long enough, the accessible additionally sets up a plurality of alkali lye branch pipes, spray alkali lye to flue gas passageway 2 inside (and preferred, can be with alkali lye branch pipe and flue gas passageway 2 direction of delivery's angle control between 30-60, so that alkali lye branch pipe sprays is rotatory on one side and is mixed with the flue gas, thereby make flue gas and alkali lye mix more evenly), can increase the alkali lye concentration in flue gas passageway 2, can directly accomplish the processing of flue gas in flue gas passageway 2 this moment (the detection that detects the pipe department is not acidic), can need not subsequent desulfurizing tower 1, can directly separate flue gas and the mixed liquid of alkali lye after handling through current vapour and liquid separator device, it is more convenient.
In addition, can increase a plurality of jet pumps 4 and a plurality of alkali lye branch pipes in step, jet pump 4 can further increase the absorption volume of flue gas, cooperates the alkali lye branch pipe to increase alkali lye concentration to can promote the total amount of flue gas that can handle in the unit interval.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides an utilize boats and ships exhaust-gas treatment system of PCHE vaporizer cooling, includes desulfurizing tower (1), the bottom of desulfurizing tower (1) lateral wall is equipped with air inlet (11), the top of desulfurizing tower (1) lateral wall is equipped with gas outlet (12), air inlet (11) are located fixedly and are communicated with flue gas passageway (2), its characterized in that: the flue gas channel (2) is provided with an installation notch (20), the installation notch (20) is provided with a jet pump (4), the jet pump (4) comprises a hollow tubular shell (41) with two open ends, one end of the shell (41) is a sucked fluid inlet (42), the other end is a sucked fluid outlet (43), the sucked fluid inlet (42) and the sucked fluid outlet (43) are respectively fixed on two side walls of the installation notch (20), the sucked fluid outlet (43) is arranged towards the desulfurizing tower (1), the side wall of the shell (41) is penetrated and fixed with a spray pipe (44), the spray pipe (44) is hollow and has two open ends, one end of the spray pipe (44) is a working fluid inlet (45), the other end is a working fluid outlet (46), the working fluid outlet (46) is positioned inside the shell (41) and is arranged towards the sucked fluid outlet (43), the working fluid inlet (45) is positioned outside the shell (41) and is communicated with and fixed with the alkali liquor channel (5).
2. The marine exhaust gas treatment system using a PCHE gasifier for temperature reduction according to claim 1, wherein: one end of the flue gas channel (2), which is far away from the desulfurizing tower (1), is communicated with and fixed with a hollow PCHE gasifier (3), the side wall of the PCHE gasifier (3) is provided with a flue gas inlet (31), the side wall of the PCHE gasifier (3) is provided with a liquefied natural gas inlet (32) and a liquefied natural gas outlet (33), and a heat exchange tube (34) is communicated with and fixed between the liquefied natural gas inlet (32) and the liquefied natural gas outlet (33).
3. The marine exhaust gas treatment system using a PCHE gasifier for temperature reduction according to claim 1, wherein: the bottom wall of the desulfurizing tower (1) is communicated and fixed with a liquid discharging channel (13), and one end, far away from the working fluid inlet (45), of the alkali liquor channel (5) is communicated with the liquid discharging channel (13).
4. The marine exhaust gas treatment system using a PCHE gasifier for temperature reduction according to claim 3, wherein: the side wall of the alkali liquor channel (5) is communicated with and fixed with an alkali liquor replenishing channel (55), and the alkali liquor replenishing channel (55) is provided with a first valve (61).
5. The marine exhaust gas treatment system using a PCHE gasifier for temperature reduction according to claim 4, wherein: the alkali liquor channel (5) is provided with a second valve (62), and the second valve (62) is positioned on one side, facing the desulfurizing tower (1), of the joint of the alkali liquor replenishing channel (55) and the alkali liquor channel (5).
6. The marine exhaust gas treatment system using a PCHE gasifier for temperature reduction according to claim 5, wherein: the liquid discharging channel (13) is provided with a third valve (63), and the third valve (63) is positioned on one side of the joint of the liquid discharging channel (13) and the alkali liquor channel (5) back to the desulfurizing tower (1).
7. The marine exhaust gas treatment system using a PCHE gasifier for temperature reduction according to claim 4, wherein: the alkali liquor channel (5) comprises a front channel (51) connected with the liquid discharging channel (13) and a rear channel (52) connected with the working fluid inlet (45), a hollow temporary storage tank (53) is arranged between the front channel (51) and the rear channel (52), one end, far away from the desulfurizing tower (1), of the front channel (51) is fixedly connected with and communicated with the temporary storage tank (53), the rear channel (52) penetrates through the interior of the temporary storage tank (53), one end, far away from the working fluid inlet (45), of the rear channel (52) is located at the bottom of the inner cavity of the temporary storage tank (53), and a driving water pump (54) is arranged on the rear channel (52).
8. The system of claim 7, wherein the PCHE gasifier is configured to cool the marine exhaust gas stream by: the rear channel (52) is provided with a valve IV (64), and the valve IV (64) is positioned at one side of the joint of the alkali liquor replenishing channel (55) and the rear channel (52) facing the desulfurizing tower (1).
9. The marine exhaust gas treatment system using a PCHE gasifier for temperature reduction according to claim 1, wherein: the side wall of the flue gas channel (2) is fixed and communicated with a detection pipe (7), and a plug (8) is inserted into one end of the detection pipe (7) which faces away from the flue gas channel (2).
10. The system of claim 9, wherein the PCHE gasifier is configured to cool the marine exhaust gas stream by: end cap (8) are established and are fixed in elastic sleeve (82) in the body of rod (81) outside including body of rod (81) and cover, body of rod (81) and detection tube (7) inner wall clearance fit, elastic sleeve (82) and detection tube (7) inner wall interference fit.
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| CN201911181137.0A CN110975568A (en) | 2019-11-27 | 2019-11-27 | Utilize boats and ships exhaust-gas treatment system of PCHE vaporizer cooling |
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| CN201911181137.0A CN110975568A (en) | 2019-11-27 | 2019-11-27 | Utilize boats and ships exhaust-gas treatment system of PCHE vaporizer cooling |
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