CN209967990U - Low-resistance liquid film gas treatment device and flue gas heat recovery system - Google Patents
Low-resistance liquid film gas treatment device and flue gas heat recovery system Download PDFInfo
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- CN209967990U CN209967990U CN201920699790.5U CN201920699790U CN209967990U CN 209967990 U CN209967990 U CN 209967990U CN 201920699790 U CN201920699790 U CN 201920699790U CN 209967990 U CN209967990 U CN 209967990U
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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
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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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The utility model discloses a gaseous processing apparatus of low resistance liquid film and flue gas heat recovery system, it includes the casing, and the top of casing is equipped with the gas outlet, is equipped with the air inlet on the lateral wall of the bottom of casing, the lateral wall of the bottom of casing is equipped with dirt cleaning mouth and blow off pipe, and the casing is equipped with the medicine mouth, and the middle part of casing is equipped with the packing layer, and this device can design a plurality of grades of packing layers as required, and the packing layer comprises the netted liquid film ball of unique structure, and the treatment fluid sprays on netted liquid film ball, forms even spherical netted liquid film. The liquid of the device directly contacts the treated gas, no material thermal resistance exists, and the liquid and the gas can realize direct heat exchange with small temperature difference; dirt thermal resistance and partition wall thermal resistance brought by a heat transfer surface do not exist, and high-efficiency heat transfer is facilitated; the gas phase and the liquid phase are in direct contact, so that a metal heat transfer surface is omitted, the efficiency is improved, and the equipment is simplified; the gas and liquid are directly contacted to make the outlet temperature of the treated gas approximate to the temperature of the working medium liquid, so that the flue gas can be reduced to a very low temperature.
Description
Technical Field
The utility model belongs to the technical field of flue gas heat recovery and purification, concretely relates to low resistance liquid film gas processing apparatus and flue gas heat recovery system.
Background
Along with the increasing importance of the world countries on the problem of environmental pollution in recent years, especially the prevention and treatment of atmospheric pollution, the energy consumption is reduced, the resource utilization rate is improved, the energy shortage is relieved, the greenhouse gas emission is reduced, the environmental pollution is treated and the like, and all countries are dedicated to building a low-carbon environment-friendly economic development mode. More industrial energy-saving devices and schemes are put into the market, and boiler flue gas waste heat recovery is widely concerned for industries with large boiler loading capacity, such as glass, metallurgy, building materials, power generation, heat supply and the like.
The heat loss of the exhaust smoke of the existing large-capacity boiler is the largest one of factors influencing the heat efficiency of the boiler, the exhaust smoke temperature is reduced, and the heat energy of the exhaust smoke is recycled, so that the heat loss of the exhaust smoke can be reduced. In the design and manufacture of an industrial boiler using fuel oil, natural gas and coal, the corrosion of a heating surface at the tail part of the boiler and the blockage of dust accumulation are considered, and in order to prevent the phenomenon, the standard exhaust gas temperature is designed to be above 140-220 ℃. The smoke temperature of the metallurgical or aluminum melting furnace can even reach more than 400-600 ℃. The high-temperature flue gas is directly discharged, so that a large amount of pollutants and heat are simultaneously discharged to the atmosphere, the atmospheric pollution is formed, the serious greenhouse effect is caused, and meanwhile, heat resources are greatly wasted and a large amount of fuel is lost.
The prior pipe-row type flue gas heat exchange device has the following problems during operation:
1. the medium-low temperature flue gas often contains corrosive gases, such as sulfur dioxide, sulfur trioxide, NOx and the like, so that the heating surface generates low-temperature corrosion, and the acid dew point corrosion of the flue gas is often shown in the flue gas waste heat recovery. Not only corrodes the heating surface and influences normal operation, but also easily causes dust and scale deposition on the heating surface to cause the blockage of a flue gas channel, increases the resistance of a fan and consumes more electric energy.
2. The smoke of industrial and mining enterprises has large dust content and the physical and chemical properties of the smoke are also very bad. The heat transfer resistance is increased, the heat exchange efficiency is reduced, the abrasion of the heating surface is caused, and the service life of the equipment is influenced.
Disclosure of Invention
One aspect of the disclosure provides a high-efficiency heat transfer and low-resistance liquid film gas treatment device, which solves the problems encountered by the existing flue gas heat exchange device during operation, and a flue gas heat recovery system formed according to the low-resistance liquid film gas treatment device.
In order to realize the purpose, the utility model adopts the following technical scheme that the utility model comprises a shell, wherein the top of the shell is provided with an air outlet, the side wall of the bottom of the shell is provided with an air inlet, the side wall of the bottom of the shell is provided with a sewage cleaning port and a sewage discharge pipe, and the side wall of the shell and the position above the sewage cleaning port are provided with a dosing port in a short distance; the middle part of the shell is provided with a packing layer, the packing layer has a certain height, a plurality of reticular liquid membrane balls are arranged in the packing layer, the reticular liquid membrane balls are of a ball body structure with a hollow outer net, and a filling port is arranged on the shell outside the packing layer; a liquid spraying device is arranged above the packing layer.
Furthermore, a dehydration and demisting layer is arranged at the top in the shell, a plurality of netted liquid film balls are arranged in the dehydration and demisting layer, and a filling opening is formed in the shell outside the dehydration and demisting layer.
Furthermore, a cleaning spray device is arranged above the dewatering and demisting device and comprises a plurality of spray pipes, the spray pipes are transversely arranged in the shell, a plurality of spray nozzles are arranged below the spray pipes, and the spray pipes penetrate through the shell and are connected with a spray liquid inlet pipe outside the shell.
Furthermore, the hydrojet device includes a plurality of hydrojet pipe, and the hydrojet pipe transversely sets up in the casing, and the below of hydrojet pipe is equipped with a plurality of hydrojet mouth, and the hydrojet pipe runs through the casing and is connected with the feed liquor pipe outside the casing.
Furthermore, a water receiving disc is arranged at the lower part of the packing layer and fixed in the shell, a water outlet is arranged on the water receiving disc, and the water outlet is connected with a water outlet pipe penetrating through the side wall of the shell.
Furthermore, the packing layer is provided with multiple stages.
Furthermore, an independent liquid spraying device is arranged above each packing layer, and the same or different treatment liquid is used by each liquid spraying device.
Furthermore, the lower part of each packing layer is provided with a water receiving disc which is fixed in the shell and provided with respective water outlets which are connected with respective water outlet pipes penetrating through the side wall of the shell.
A flue gas heat recovery system comprises the low-resistance liquid film gas treatment device, a heat exchanger and a liquid supply system, wherein a water outlet pipe of the low-resistance liquid film gas treatment device is connected with the heat exchanger, the heat exchanger is connected with the liquid supply system, and the liquid supply system is connected with a liquid inlet pipe of the low-resistance liquid film gas treatment device.
Furthermore, a filtering device is arranged between the heat exchanger and the liquid supply system.
And each liquid spraying device is provided with a heat exchange device.
Compared with the prior art, the utility model, have following advantage:
1. the liquid directly contacts the flue gas, no material thermal resistance exists, and the liquid and the gas can realize small temperature difference heat transfer;
2. dirt thermal resistance and partition wall thermal resistance brought by a heat transfer surface do not exist, and high-efficiency heat transfer is facilitated;
3. the gas phase and the liquid phase are in direct contact, so that a metal heat transfer surface is omitted, the efficiency is improved, and the equipment is simplified;
4. the liquid and the gas are directly contacted to ensure that the outlet temperature of the flue gas is similar to the temperature of the working medium liquid, so that the flue gas can be reduced to a very low temperature;
5. this device special construction's netted filler ball, liquid form a large amount of even liquid films at the reticular surface of ball, netted filler ball is with the continuous cutting dispersion of flue gas again for flue gas and liquid film contact completely, and the liquid film is even on flue gas through-flow cross section, and no blank area, gaseous also evenly distributed make flue gas and liquid film fully contact, reach the effect of the abundant heat transfer of gas, liquid.
6. The special structure of the device has very small smoke resistance of the reticular packing ball, can realize automatic decontamination in work, and can not deposit dust and scale, so that the smoke resistance is always stable.
7. The liquid film formed on the net surface of the ball continuously flows, so that the liquid film contacted by the flue gas is continuously updated and continuously contacted with new liquid, and the gas-liquid heat exchange is more complete.
8. The heated liquid can play the effect of washing the flue gas when contacting with the flue gas, does not have deposition and scale deposit condition, and through the scrubbing, the exhaust flue gas is cleaner more environmental protection.
Drawings
FIG. 1 is a schematic overall structure according to one aspect of the present disclosure;
FIG. 2 is a schematic diagram of a flue gas heat recovery system configuration according to one aspect of the present disclosure;
in the figure: 1-shell, 2-air outlet, 3-cleaning spray device, 301-spray pipe, 302-spray nozzle, 4-dehydration demisting layer, 5-packing layer, 501-filling port, 6-air inlet, 7-dirt cleaning port, 8-sewage discharge pipe, 9-dosing port, 10-liquid spray device, 1001-liquid spray pipe, 1002-liquid spray nozzle, 11-water outlet pipe, 12-heat exchanger, 13-filter device, 14-liquid storage tank, 15-liquid supply pump, 16-pipeline, and 17-liquid supplement port.
Detailed Description
The present invention will be further explained with reference to specific embodiments, but not limited to the present invention, the structures, proportions, sizes, etc. shown in the drawings are only used to match the contents disclosed in the specification, so as to be known and read by the people familiar with the art, and not to limit the practical limit conditions of the present invention, so that the present invention does not have any substantial technical significance, and any modification of the structures, changes of the proportion relation or adjustment of the size should still fall within the range covered by the technical contents disclosed in the present invention without affecting the function and the achievable purpose of the present invention. Meanwhile, the terms "upper", "lower", "front", "rear", "middle", and the like used in the present specification are for the sake of clarity only, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof are also considered to be the scope of the present invention without substantial changes in the technical content.
As shown in fig. 1, the device comprises a housing 1, a gas outlet 2 is arranged at the top of the housing 1, a cleaning spray device 3 is arranged below the gas outlet 2, the cleaning spray device 3 comprises a plurality of spray pipes 301, the spray pipes 301 are transversely arranged in the housing 1, a spray nozzle 302 is arranged below the spray pipes 301, and the spray pipes 301 penetrate through the housing 1 and are connected with a spray liquid inlet pipe outside the housing 1. A dehydration and demisting layer 4 is arranged below the cleaning and spraying device 3, a plurality of netted filler balls are arranged in the dehydration and demisting layer 4, and a filler opening is arranged on the shell outside the dehydration and demisting layer 4. An air inlet 6, a sewage cleaning opening 7 and a sewage discharge pipe 8 are arranged on the side wall of the bottom of the shell 1, and a medicine feeding opening 9 is further arranged on the side wall of the shell 1 and a position short of the upper side of the sewage cleaning opening 7. The middle part of the shell 1 is provided with a multi-stage packing layer 5, each stage of packing layer 5 has a certain height, the packing layer 5 is filled with a reticular liquid film ball, and the shell outside the packing layer 5 is provided with a filling opening 501. A liquid spraying device 10 is arranged above the uppermost packing layer 5, the liquid spraying device 10 comprises a plurality of liquid spraying pipes 1001, the liquid spraying pipes 1001 are transversely arranged in the shell 1, a plurality of liquid spraying nozzles 1002 are arranged below the liquid spraying pipes 1001, and the liquid spraying pipes 1001 penetrate through the shell 1 and are connected with liquid inlet pipes outside the shell 1; the lower part of the packing layer 5 at the bottom is provided with a water receiving disc which is fixed in the shell 1, the water receiving disc is provided with a water outlet, and the water outlet is connected with a water outlet pipe 11 which penetrates through the side wall of the shell. The multi-stage packing layers 5 are all arranged between the liquid spraying device 10 and the air inlet 6.
The treatment fluid of every grade packing layer drenches from upper portion, each netted liquid film ball of flowing through, and netted liquid film ball is the spheroid structure of interior empty extranet, forms even globular liquid film on the net surface of netted ball, and the treated gas moves from bottom to top, passes from netted liquid film ball constantly, constantly contacts with netted liquid film, contacts the liquid film repeatedly, and gas is thoroughly handled totally, simultaneously because netted structure, and gas resistance is very little. The reticular liquid film balls start to rotate or shake under the action of the moving gas, and the adjacent reticular liquid film balls rub with each other in shaking, so that the solid particles attached to the reticular liquid film balls fall off along with the treatment liquid to achieve the self-cleaning capability. After the heat on the treated gas is fully contacted with the treatment liquid, the energy of the treated gas is absorbed by the treatment liquid, falls onto the water receiving tray and is discharged through the water outlet.
In a specific operation mode, the flue gas flows into the filter layer from the air inlet and then contacts with a liquid film on the reticular filler balls, the flue gas after sufficient heat exchange and dust removal continuously rises, and then passes through the dehydration and demisting device, most of moisture carried by the flue gas is removed, and the clean flue gas is discharged. The liquid left over on the water pan flows to the bottom of the shell, one part of the liquid is discharged from the blow-off pipe, the other part of the liquid is solidified at the bottom of the shell after reacting with the medicament, and when the solid smoke reaches a certain thickness, the solid smoke is discharged by opening the sewage cleaning port. After the reticular packing ball is used for a period of time, the reticular packing ball can be taken out from the packing opening for replacement, so that the reticular packing ball is always in an optimal treatment state. The dehydration and demisting device can be cleaned by a cleaning and spraying device after being used for a long time.
As shown in figure 2, the flue gas heat recovery system comprises the low-resistance liquid film gas treatment device, a heat exchanger 12 and a liquid supply system, wherein a water outlet pipe 11 of the low-resistance liquid film gas treatment device is connected with the heat exchanger 12, the heat exchanger 12 is connected with the liquid supply system, a filtering device 13 is arranged between the heat exchanger and the liquid supply system, and the liquid supply system is connected with a liquid inlet pipe of the low-resistance liquid film gas treatment device. The liquid supply system is composed of a liquid storage tank (or liquid storage tank) 14, a liquid supply pump 15 and a pipeline 16, wherein the liquid storage tank 14 is provided with a liquid inlet, a liquid outlet and a liquid supplementing port, the liquid inlet is connected with the heat exchanger, the liquid outlet is connected with the liquid supply pump 15, and the liquid supply pump 15 is connected with a liquid inlet pipe of the low-resistance liquid film gas treatment device. When the capacity of the treatment liquid in the liquid storage tank 14 is less than the minimum value, the treatment liquid is replenished from the liquid replenishing port 17.
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 (10)
1. Low resistance liquid film gas treatment device, including the casing, the top of casing is equipped with the gas outlet, is equipped with air inlet, its characterized in that on the lateral wall of the bottom of casing: a sewage cleaning port and a sewage discharge pipe are arranged on the side wall of the bottom of the shell, and a medicine feeding port is arranged on the side wall of the shell and a position not far above the sewage cleaning port;
the middle part of the shell is provided with a packing layer, the packing layer has a certain height, a plurality of reticular liquid membrane balls are arranged in the packing layer, the reticular liquid membrane balls are of a ball body structure with a hollow outer net, and a filling port is arranged on the shell outside the packing layer;
a liquid spraying device is arranged above the packing layer.
2. The low resistance liquid film gas treatment apparatus according to claim 1, wherein: the top in the casing is equipped with the dehydration defogging layer, is equipped with the netted liquid film ball of a plurality of in the dehydration defogging layer, is equipped with the filler neck on the casing in the dehydration defogging layer outside.
3. The low resistance liquid film gas treatment apparatus according to claim 2, wherein: the top of dehydration defogging device is equipped with washs spray set, it includes a plurality of shower to wash spray set, and the shower transversely sets up in the casing, and the below of shower is equipped with a plurality of spray nozzle, and the shower runs through the casing and is connected with the outer spray liquor feed liquor pipe of casing.
4. The low resistance liquid film gas treatment apparatus according to claim 1, wherein: the liquid spraying device comprises a plurality of liquid spraying pipes, the liquid spraying pipes are transversely arranged in the shell, a plurality of liquid spraying nozzles are arranged below the liquid spraying pipes, and the liquid spraying pipes penetrate through the shell and are connected with a liquid inlet pipe outside the shell.
5. The low resistance liquid film gas treatment apparatus according to claim 1, wherein: and a water receiving disc is arranged at the lower part of the packing layer and fixed in the shell, a water outlet is arranged on the water receiving disc, and the water outlet is connected with a water outlet pipe penetrating through the side wall of the shell.
6. The low resistance liquid film gas treatment apparatus according to claim 1, wherein: the packing layer is provided with a plurality of stages.
7. The low resistance liquid film gas treatment apparatus according to claim 6, wherein: and an independent liquid spraying device is arranged above each packing layer, and each liquid spraying device uses the same or different treatment liquid.
8. The low resistance liquid film gas treatment apparatus according to claim 6, wherein: the lower part of each packing layer is provided with a water receiving disc which is fixed in the shell and provided with respective water outlets which are connected with respective water outlet pipes penetrating through the side wall of the shell.
9. The utility model provides a flue gas heat recovery system which characterized in that: the low resistance liquid film gas treatment device, the heat exchanger and the liquid supply system according to claim 1, wherein a water outlet pipe of the low resistance liquid film gas treatment device is connected with the heat exchanger, the heat exchanger is connected with the liquid supply system, and the liquid supply system is connected with a liquid inlet pipe of the low resistance liquid film gas treatment device.
10. The flue gas heat recovery system of claim 9, wherein: and a filtering device is arranged between the heat exchanger and the liquid supply system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920699790.5U CN209967990U (en) | 2019-05-15 | 2019-05-15 | Low-resistance liquid film gas treatment device and flue gas heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920699790.5U CN209967990U (en) | 2019-05-15 | 2019-05-15 | Low-resistance liquid film gas treatment device and flue gas heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209967990U true CN209967990U (en) | 2020-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920699790.5U Expired - Fee Related CN209967990U (en) | 2019-05-15 | 2019-05-15 | Low-resistance liquid film gas treatment device and flue gas heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209967990U (en) |
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2019
- 2019-05-15 CN CN201920699790.5U patent/CN209967990U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |