CN211716598U - Air heat exchange cooler for dust-containing flue gas waste heat utilization system - Google Patents
Air heat exchange cooler for dust-containing flue gas waste heat utilization system Download PDFInfo
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- CN211716598U CN211716598U CN202020260181.2U CN202020260181U CN211716598U CN 211716598 U CN211716598 U CN 211716598U CN 202020260181 U CN202020260181 U CN 202020260181U CN 211716598 U CN211716598 U CN 211716598U
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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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Abstract
The utility model discloses an air heat transfer cooler for dirty flue gas waste heat utilization system belongs to heat transfer cooling equipment field, has solved the smoke and dust that current air heat transfer cooler exists and has very easily blockked up the problem of heat exchange tube. The utility model discloses a heat transfer system and dust collecting system, dust collecting system establish in the heat transfer system below, and dust collecting system is connected with intake pipe and blast pipe on the cylinder respectively from last to connecting gradually down forming by cylinder, cone and dust collection bucket, and the intake pipe is linked together along cylinder tangential direction, blast pipe and heat transfer system, and the dust collection bucket lower extreme is connected with the unloading valve. The utility model discloses with the intake pipe design of dust collector for along cylinder tangential direction, high temperature high dust flue gas gets into dust collecting system along the cylinder tangent line, and rotary motion is made to the dusty air current, separates the smoke and dust from the air current and entrapment in the wall under centrifugal force effect, makes the smoke and dust fall into the ash collecting hopper again under the action of gravity, and dust collection efficiency is high, has avoided a large amount of smoke and dust to get into the heat transfer case, improves heat transfer efficiency.
Description
Technical Field
The utility model belongs to heat transfer cooling arrangement field, concretely relates to air heat transfer cooler for dirty flue gas waste heat utilization system.
Background
The air heat exchange cooler is widely applied to the field of metallurgy. The air heat exchange cooler has the functions of utilizing waste heat, saving energy and cooling flue gas to ensure the normal operation of the subsequent process.
Most of the flue gas in the metallurgical industry has the characteristics of high temperature and high dust, and generally requires a heat exchange cooler to recover the waste heat of the flue gas so as to ensure the normal operation of the subsequent flue gas purification process. However, the existing air heat exchange cooler has the following three problems in the process of treating high-temperature and high-dust flue gas: firstly, the smoke dust easily blocks the heat exchange tube, so that the heat exchange efficiency is low, manual ash removal is performed, the labor intensity is high, and the operation efficiency is low; secondly, the temperature of the flue gas at the outlet of the heat exchange cooler fluctuates along with the temperature of the flue gas at the inlet, and when the fluctuation of the temperature of the flue gas is large, the subsequent purification work of the flue gas is seriously influenced; thirdly, the amount of hot air after heat exchange by the heat exchange cooler is constant, and the amount of hot air can not be adjusted at any time according to requirements.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an air heat transfer cooler for dirty flue gas waste heat utilization system to solve the smoke and dust that current air heat transfer cooler exists and very easily block up the problem of heat exchange tube.
The technical scheme of the utility model is that: the utility model provides an air heat transfer cooler for dirty flue gas waste heat utilization system, includes heat transfer system and dust collecting system, and dust collecting system establishes in the heat transfer system below, and dust collecting system connects gradually to form from last to down by cylinder, cone and dust collection hopper, is connected with intake pipe and blast pipe on the cylinder respectively, and the intake pipe is followed cylinder tangential direction, and the blast pipe is linked together with heat transfer system, and the dust collection hopper lower extreme is connected with the unloading valve.
As the utility model discloses a further improvement, heat transfer system includes heat transfer case, air inlet case and air-out case, and air inlet case and air-out case are established respectively in heat transfer case both sides, and many heat exchange tube both ends that transversely arrange in the heat transfer case communicate with air inlet case and air-out case respectively, and heat transfer case upper end is equipped with the exhanst gas outlet, and heat transfer case lower extreme is linked together with the blast pipe.
As the utility model discloses a further improvement still includes axial fan, temperature sensor and PLC control system, and axial fan establishes on air inlet box upper portion, and temperature sensor establishes in exhanst gas outlet department, and axial fan and temperature sensor all link to each other with PLC control system.
As a further improvement, the axial flow fan adopts a variable frequency axial flow fan.
As a further improvement of the utility model, the axial flow fan is provided with more than one.
As the utility model discloses a further improvement, the air-out incasement is equipped with the governing valve, and the air-out bottom of the case portion is equipped with the hot-air outlet pipe, and the hot-air outlet pipe inserts flue gas waste heat utilization system, and the air-out roof portion is equipped with the air-conditioned outlet.
As a further improvement, the bottom of the heat exchange box is provided with a flue gas distribution plate, and the flue gas distribution plate is evenly provided with a plurality of holes. The flue gas distribution plate enables the flue gas to uniformly enter the heat exchange box.
As a further improvement, the center of the flue gas distribution plate sinks.
As a further improvement of the utility model, the heat exchange tubes are distributed in the heat exchange box in a staggered manner.
As a further improvement, the dust collecting system and the heat exchange system are connected by flanges, and the dust collecting system is convenient to install and disassemble.
The utility model has the advantages that:
1. the heat transfer efficiency is high: the utility model designs the air inlet pipe of the dust collector to be along the tangential direction of the cylinder, in the operation process, high-temperature and high-dust smoke enters the dust collecting system along the tangent line of the cylinder, dust-containing airflow makes rotary motion, the smoke and dust are separated from the airflow and collected on the inner wall of the cylinder under the action of centrifugal force, then the smoke and dust fall into the dust collecting hopper under the action of gravity, and then the smoke and dust is discharged through the dust discharging valve, and the dust collecting efficiency of the dust collecting mode is high; the flue gas after dust collection enters the heat exchange box through the exhaust pipe, so that a large amount of smoke dust is prevented from entering the heat exchange box, and the heat transfer efficiency is improved. Flue gas gets into heat exchange case inner chamber and does not get into the heat exchange tube, can effectively solve current air heat transfer cooler smoke and dust and easily block up the heat exchange tube, lead to the problem that heat exchange efficiency is low, the operating efficiency is low.
2. Flue gas outlet temperature is constant: axial fan and temperature sensor pass through PLC control system interlocking control, and when heat transfer case exhanst gas temperature in exit was higher than when setting up the temperature, temperature sensor gave PLC control system with signal transmission, and under PLC control system's control, axial fan automatic start, PLC control system starts the number of stages or frequency according to temperature deviation adjustment axial fan, controls the cold air volume that gets into the heat transfer case to guarantee that the exhanst gas temperature in exit satisfies the temperature requirement. Under the effect of PLC control system, realize axial fan's automation and open and stop, degree of automation is high, provides the guarantee for realizing normal production.
3. The hot air quantity can be adjusted at any time according to the requirement: when flue gas waste heat utilization system need increase or reduce the hot air volume, under the unchangeable condition of exhanst gas outlet temperature, the utility model discloses the governing valve in the accessible adjustment goes out bellows, and the hot air volume that control got into flue gas waste heat utilization system, and then guarantees export flue gas constancy of temperature and thermal rational utilization. Excess hot air is discharged from the conditioned air outlet.
Drawings
Fig. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a schematic diagram of the right-view structure of the dust collecting system and the heat exchanging system of the present invention;
fig. 3 is a schematic structural diagram of the middle flue gas distribution plate of the present invention.
In the figure, 1-dust collecting system; 11-an air inlet pipe; 12-an exhaust pipe; 13-a cylinder; 14-a cone; 15-ash collecting hopper; 16-an ash discharge valve; 2-a heat exchange system; 21-an air inlet box; 211-axial fan; 22-a heat exchange box; 221-flue gas outlet; 222-a heat exchange tube; 223-a flue gas distribution plate; 23-an air outlet box; 231-regulating valve; 232-hot air outlet duct; 233-conditioned air outlet; 3-a flange; 4-a temperature sensor; 5-PLC control system.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1-3, an air heat exchange cooler for a dust-laden flue gas waste heat utilization system is a vertical air heat exchange cooler, and comprises a heat exchange system 2 and a dust collecting system 1, wherein the dust collecting system 1 is arranged below the heat exchange system 2, the dust collecting system 1 is formed by sequentially connecting a cylinder 13, a cone 14 and a dust collecting hopper 15 from top to bottom, the cylinder 13 is respectively connected with an air inlet pipe 11 and an exhaust pipe 12, the air inlet pipe 11 is along the tangential direction of the cylinder 13, the exhaust pipe 12 is communicated with the heat exchange system 2, and the lower end of the dust collecting hopper 15 is connected with an ash discharge valve 16.
The heat exchange system 2 comprises a heat exchange box 22, an air inlet box 21 and an air outlet box 23, wherein the air inlet box 21 and the air outlet box 23 are respectively arranged at two sides of the heat exchange box 22, a plurality of heat exchange tubes 222 transversely distributed in the heat exchange box 22 are respectively communicated with the air inlet box 21 and the air outlet box 23, a smoke outlet 221 is arranged at the upper end of the heat exchange box 22, and the lower end of the heat exchange box 22 is communicated with the exhaust pipe 12.
The novel air conditioner is characterized by further comprising an axial flow fan 211, a temperature sensor 4 and a PLC control system 5, wherein the axial flow fan 211 is arranged on the upper portion of the air inlet box 21, the temperature sensor 4 is arranged at the flue gas outlet 221, and the axial flow fan 211 and the temperature sensor 4 are connected with the PLC control system 5.
The axial flow fan 211 is a variable frequency axial flow fan.
More than one axial flow fan 211 is provided.
An adjusting valve 231 is arranged in the air outlet box 23, a hot air outlet pipe 232 is arranged at the bottom of the air outlet box 23, the hot air outlet pipe 232 is connected to the flue gas waste heat utilization system, and an air adjusting outlet 233 is arranged at the top of the air outlet box 23.
The bottom of the heat exchange box 22 is provided with a flue gas distribution plate 223, and a plurality of holes are uniformly distributed on the flue gas distribution plate 223.
The flue gas distribution plate 223 sinks in the center.
The heat exchange pipes 222 are arranged in the heat exchange case 22 in a staggered manner.
The dust collecting system 1 is connected with the heat exchange system 2 through a flange 3.
The ash collecting hopper 15 and the ash discharging valve 16 are connected through flanges, so that the ash collecting hopper is convenient to mount, dismount and replace.
The moving distance of the regulating valve 231 can be controlled by an automatic control system, so that the air quantity can be conveniently regulated.
The ash discharge valve 16 adopts a star-shaped ash discharge valve, so that the automation control and management are convenient.
In the operation process, high-temperature and high-dust flue gas enters the dust collection system 1 through the air inlet pipe 11 along the tangential direction of the cylinder 13, dust-containing airflow rotates, the flue gas is separated from the airflow and collected on the inner wall of the cylinder 13 under the action of centrifugal force, the flue gas falls into the dust collection hopper 15 under the action of gravity, the flue gas is discharged through the dust discharge valve 16, and the flue gas after dust collection enters the inner cavity of the heat exchange box 22 through the exhaust pipe 12 and the flue gas distribution plate 223. Cold air enters the heat exchange tube 222 through the air inlet box 21, high-temperature flue gas flows in the space outside the heat exchange tube 222, the cold air flows inside the heat exchange tube 222, the cold air exchanges heat with the high-temperature flue gas in the inner cavity of the heat exchange box 22, the hot air is discharged through the air outlet box 23 and the hot air outlet tube 232 and enters the flue gas waste heat utilization system, and the cooled flue gas is discharged through the flue gas outlet 221 and enters the subsequent processes. The utility model discloses can effectively solve current air heat transfer cooler smoke and dust and easily block up the heat exchange tube, lead to the problem that heat exchange efficiency is low, the operating efficiency is low.
The flue gas temperature is set at the PLC control system 5, when the flue gas temperature at the flue gas outlet 221 of the heat exchange box 22 is higher than the set temperature, the temperature sensor 4 transmits a signal to the PLC control system 5, the axial flow fan 211 is automatically started under the control of the PLC control system 5, the PLC control system 5 adjusts the starting number or frequency of the axial flow fan 211 according to the temperature deviation, and the amount of cold air entering the heat exchange box 22 is controlled, so that the flue gas temperature at the flue gas outlet 221 is ensured to meet the temperature requirement.
When the flue gas waste heat utilization system needs to increase or reduce the amount of hot air, under the condition that the temperature of the flue gas outlet is unchanged, the amount of hot air entering the flue gas waste heat utilization system can be controlled by adjusting the adjusting valve 231 in the air outlet box 23, and then the temperature constancy of the outlet flue gas and the reasonable utilization of heat are ensured. The surplus hot air is discharged through the conditioned air outlet 233.
The utility model discloses easily installation, dismantlement and maintenance are applicable to the heat transfer cooling of medium and high temperature dusty flue gas, and the suitability is strong, can extensively quote in the heat transfer cooling of metallurgy, chemical industry, high temperature high dust class flue gas.
Claims (10)
1. The utility model provides an air heat transfer cooler for dirty gas waste heat utilization system, includes heat transfer system and dust collecting system, dust collecting system establishes in the heat transfer system below, its characterized in that: dust collecting system (1) is connected gradually from last to down by cylinder (13), cone (14) and dust collection bucket (15) and constitutes, be connected with intake pipe (11) and blast pipe (12) on cylinder (13) respectively, cylinder (13) tangential direction is followed in intake pipe (11), and blast pipe (12) are linked together with heat transfer system (2), dust collection bucket (15) lower extreme is connected with unloading valve (16).
2. The air heat exchange cooler for the dust-laden flue gas waste heat utilization system according to claim 1, characterized in that: heat transfer system (2) are including heat transfer case (22), air inlet case (21) and air-out case (23), air inlet case (21) are established respectively in heat transfer case (22) both sides with air-out case (23), and many heat exchange tubes (222) both ends of transversely having arranged in heat transfer case (22) are linked together with air inlet case (21) and air-out case (23) respectively, and heat transfer case (22) upper end is equipped with exhanst gas outlet (221), and heat transfer case (22) lower extreme is linked together with blast pipe (12).
3. The air heat exchange cooler for the dust-laden flue gas waste heat utilization system according to claim 2, characterized in that: the novel air conditioner is characterized by further comprising an axial flow fan (211), a temperature sensor (4) and a PLC control system (5), wherein the axial flow fan (211) is arranged on the upper portion of the air inlet box (21), the temperature sensor (4) is arranged at a flue gas outlet (221), and the axial flow fan (211) and the temperature sensor (4) are connected with the PLC control system (5).
4. The air heat exchange cooler for the dust-laden flue gas waste heat utilization system according to claim 3, characterized in that: the axial flow fan (211) adopts a variable-frequency axial flow fan.
5. The air heat exchange cooler for the dust-laden flue gas waste heat utilization system according to claim 4, characterized in that: more than one axial flow fan (211) is arranged.
6. The air heat exchange cooler for the dust-laden flue gas waste heat utilization system according to any one of claims 2 to 5, wherein: the air outlet box (23) is internally provided with an adjusting valve (231), the bottom of the air outlet box (23) is provided with a hot air outlet pipe (232), the hot air outlet pipe (232) is connected into a flue gas waste heat utilization system, and the top of the air outlet box (23) is provided with an adjusting air outlet (233).
7. The air heat exchange cooler for the dust-laden flue gas waste heat utilization system according to claim 6, characterized in that: the bottom of the heat exchange box (22) is provided with a flue gas distribution plate (223), and a plurality of holes are uniformly distributed on the flue gas distribution plate (223).
8. The air heat exchange cooler for the dust-laden flue gas waste heat utilization system according to claim 7, characterized in that: the center of the flue gas distribution plate (223) sinks.
9. The air heat exchange cooler for the dust-laden flue gas waste heat utilization system according to claim 8, characterized in that: the heat exchange tubes (222) are distributed in the heat exchange box (22) in a staggered manner.
10. The air heat exchange cooler for the dust-laden flue gas waste heat utilization system according to claim 9, characterized in that: the dust collecting system (1) is connected with the heat exchange system (2) through a flange (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020260181.2U CN211716598U (en) | 2020-03-05 | 2020-03-05 | Air heat exchange cooler for dust-containing flue gas waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020260181.2U CN211716598U (en) | 2020-03-05 | 2020-03-05 | Air heat exchange cooler for dust-containing flue gas waste heat utilization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211716598U true CN211716598U (en) | 2020-10-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020260181.2U Active CN211716598U (en) | 2020-03-05 | 2020-03-05 | Air heat exchange cooler for dust-containing flue gas waste heat utilization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211716598U (en) |
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2020
- 2020-03-05 CN CN202020260181.2U patent/CN211716598U/en active Active
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