CN212133106U - Flue gas heat energy recycling device for asphalt concrete production - Google Patents

Abstract

The utility model relates to a flue gas heat recovery utilizes device for asphalt concrete production, it includes flue gas heat recovery unit, flue gas heat recovery unit include the flue gas that is linked together with the gas vent carry be responsible for, carry the flue gas that is linked together with the flue gas and keep in jar, keep in the flue gas pipeline that the jar is linked together with the flue gas and set up the dust purification processing apparatus on flue gas pipeline, heat transfer oil pipe link up to peg graft and passes the flue gas jar of keeping in. The utility model discloses at the in-process of production asphalt concrete, the flue gas can be carried to the flue gas and keep in the jar, and the flue gas keeps in the jar and can be in the same place the heat of flue gas relatively concentrated, and the intraductal heat transfer oil of heat transfer oil can carry out the heat transfer with the flue gas when keeping in the jar through the flue gas, need not set up in addition the heating source just can realize the heating to the heat transfer oil to heat energy in the utilization flue gas that can be abundant, can resources are saved, avoid the waste of heat energy.

Description

Flue gas heat energy recycling device for asphalt concrete production

Technical Field

The utility model belongs to the technical field of the technique of asphalt concrete production and specifically relates to a flue gas heat recovery utilizes device is used in asphalt concrete production.

Background

The concrete mixing plant is mainly used for concrete engineering and mainly used for mixing mixed concrete, and is also called as a concrete mixing plant. The mixing plant mixes the aggregate and the powder required by the concrete through the mixing equipment, and then the concrete mixing truck is pulled to the site of concrete construction for use, so that on one hand, the standard ratio of the concrete aggregate and the powder is manufactured through the concrete mixing plant, the concrete is standardized, on the other hand, the aggregate and the powder are added in the concrete mixing plant, and the environmental pollution of the construction site is reduced. The concrete such as current bituminous mixture, dry-mixed mortar mixture need dry the aggregate earlier before the stirring just can stir, need utilize drying equipment when drying the aggregate, can produce a large amount of flue gases and dust at drying equipment to the aggregate in-process of heating stoving, consequently current concrete mixing plant can be provided with flue gas recovery processing device.

Among the prior art, utility model patent that publication number is CN207244393U specifically discloses a mix equipment of high altitude area asphalt concrete, include: a drying system for heating the mineral aggregate; the heat conducting oil heating system is used for heating the asphalt; mixing the mineral aggregate and asphalt, and outputting asphalt concrete meeting the outlet temperature; to dirty dusty dust-laden gas and contain dust gas filtration separation's dust pelletizing system, include: a partition for separating useful dust having a particle size of 0.075mm or more and useless dust having a particle size of less than 0.075 mm; a rapid conveyor for conveying useful dust to a mixing plant; and the balance switch is used for automatically outputting the useless dust to the dust collection pit in real time.

Although above-mentioned technical scheme can collect the processing to the flue gas and the dust of stoving and mix in-process, flue gas and dust have higher heat, and these heats do not get up fine utilization, but directly scatter and disappear at the in-process of flue gas and dust transmission or emission, cause the waste of heat energy.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims at providing a flue gas heat recovery utilizes device for asphalt concrete production, the device can be to the abundant utilization of heat of asphalt concrete production stirring in-process flue gas, can resources are saved, avoid the wasting of resources.

The above object of the present invention is achieved by the following technical solutions:

a flue gas heat energy recycling device for asphalt concrete production comprises a flue gas heat energy recycling device connected with a drying device, a stirring building and an asphalt heating and conveying system, wherein the drying device comprises a drying cylinder and a gas heating device connected with the drying cylinder, the drying cylinder is provided with an exhaust port, the asphalt heating and conveying system comprises an asphalt storage tank, a heat conducting oil tank, a heating tank connected with the asphalt storage tank, an asphalt conveying pipe communicated with the asphalt storage tank and a heat exchange oil pipe communicated with the heat conducting oil tank, a first heat exchange sleeve is arranged outside the asphalt conveying pipe, the heat exchange oil pipe is communicated with the first heat exchange sleeve, the flue gas heat energy recycling device comprises a flue gas conveying main pipe communicated with the exhaust port, a flue gas temporary storage tank communicated with the flue gas conveying main pipe, a flue gas conveying pipeline communicated with the flue gas temporary storage tank and a dust purification device arranged on the flue gas conveying pipeline, the heat exchange oil pipe penetrates through the smoke temporary storage tank in a penetrating and inserting mode.

Through adopting the above technical scheme, a stoving section of thick bamboo can produce a large amount of flue gases when heating the drying to the aggregate, the flue gas can be followed and is discharged the flue gas from the gas vent and carry and be responsible for in, the flue gas is carried and is responsible for and can carry the flue gas to the flue gas jar of keeping in, the flue gas jar of keeping in can be in the same place the heat of flue gas is concentrated relatively, heat transfer oil in the heat transfer oil pipe can carry out the heat transfer with the flue gas when the jar is kept in to the flue gas, need not set up in addition the heating source and just can realize the heating to heat transfer oil, thereby can be abundant the heat energy in the utilization flue gas.

The present invention may be further configured in a preferred embodiment as: the heat exchange oil pipe is spirally distributed in the smoke temporary storage tank.

Through adopting above-mentioned technical scheme, the heat transfer oil pipe that the heliciform set up can be abundant keep in the high temperature flue gas heat transfer in the jar with the flue gas, make the heat transfer effect better, the heat energy of the high temperature flue gas of utilization that can be abundant, resources are saved avoids the waste of heat energy.

The present invention may be further configured in a preferred embodiment as: the flue gas jar outside of keeping in is provided with first heat-conducting component, first heat-conducting component include with flue gas jar fixed connection's first fan of keeping in and the first tuber pipe that links mutually with first fan, first tuber pipe is the heliciform setting and keeps in the outside of jar in the flue gas, heat transfer oil pipe's the outside is provided with the second heat transfer sleeve pipe, first tuber pipe link up to peg graft in the second heat transfer sleeve pipe.

Through adopting above-mentioned technical scheme, when the flue gas is stored the flue gas and is kept in the jar, start first fan, first fan linkage first tuber pipe, the air current in the first tuber pipe can be abundant keep in the jar outside heat energy exchange mutually with the flue gas, steam in the first tuber pipe can enter into the second heat transfer sleeve pipe, the intraductal hot-air of second heat transfer sleeve pipe can play heat retaining effect to heat transfer oil pipe, reduce the calorific loss of heat transfer oil at the in-process that heat transfer oil flows, can guarantee the heat transfer effect of heat transfer oil to pitch, thereby improve the utilization efficiency of flue gas heat energy.

The present invention may be further configured in a preferred embodiment as: the flue gas is carried and is responsible for and communicate to have the flue gas to carry and divide the pipe, it changes the jar to be provided with the flue gas between a stoving section of thick bamboo and the flue gas jar of keeping in, the flue gas is carried to divide the pipe and is linked together with the flue gas jar of changing, the flue gas is carried to be provided with the valve on the branch pipe.

Through adopting above-mentioned technical scheme, can open the valve when flue gas flow is great, the high temperature flue gas enters into the flue gas transfer tank, can guarantee the make full use of to the heat energy of high temperature flue gas to can avoid the waste of heat energy.

The present invention may be further configured in a preferred embodiment as: the flue gas transfer tank is characterized in that a second heat conduction assembly is arranged on the outer side of the flue gas transfer tank, the second heat conduction assembly comprises a second fan fixedly connected with the flue gas transfer tank and a second air pipe linked with the second fan, the second air pipe is spirally arranged on the outer side of the flue gas transfer tank, a third heat exchange sleeve is arranged on the outer side of the first heat exchange sleeve, and the second air pipe is communicated and inserted into the third heat exchange sleeve.

Through adopting above-mentioned technical scheme, the second fan can drive the air current and enter into the second tuber pipe, the second tuber pipe can with the flue gas heat energy heat transfer in the flue gas transfer pot outside, the air current after the heat transfer can enter into the third heat transfer sleeve pipe, hot gas flow in the third heat transfer sleeve pipe can play further heat retaining effect to the conduction oil in the first heat transfer sleeve pipe, guarantee that the conduction oil keeps the high temperature state at the in-process of heat transfer, thereby guarantee the heat preservation heat transfer effect to pitch, the heat energy of utilization flue gas that can be abundant.

The present invention may be further configured in a preferred embodiment as: and a heat insulation layer is arranged on the outer side of the flue gas conveying main pipe.

Through adopting above-mentioned technical scheme, the setting up of heat preservation can be carried the person in charge to the flue gas and play heat retaining effect, guarantees that the heat of flue gas in transmission process can not scatter and disappear, guarantees the concentration of flue gas thermal energy.

The present invention may be further configured in a preferred embodiment as: the dust purification treatment device comprises a cyclone separator communicated with the flue gas conveying pipeline, a bag-type dust remover communicated with the cyclone separator and a spray tower communicated with the bag-type dust remover, wherein a connecting pipeline is arranged between the cyclone separator and the bag-type dust remover, and the connecting pipeline is communicated with the drying cylinder.

Through adopting above-mentioned technical scheme, after the preliminary separation of flue gas through cyclone filters, the flue gas enters into the section of thick bamboo of drying to can utilize the heat energy of flue gas to dry the aggregate, the waste heat of utilization flue gas that can be abundant makes resources rational utilization.

In summary, the invention includes at least one of the following beneficial technical effects:

high-temperature flue gas in the drying cylinder enters a flue gas temporary storage tank from a flue gas conveying main pipe, and the flue gas temporary storage tank can relatively concentrate the heat of the flue gas together, so that the high-temperature flue gas is more fully utilized;

the heat exchange oil in the heat exchange oil pipe can exchange heat with the flue gas when passing through the flue gas temporary storage tank, and the heat exchange oil can be heated without an additional heating source, so that the heat energy in the flue gas can be fully utilized, the resources can be saved, and the waste of the heat energy is avoided;

first heat-conducting component and second heat-conducting component can be abundant utilize the flue gas to carry out the heat transfer, and the air current after the heat transfer can carry out the heat transfer to the processing step in the asphalt concrete and keep warm, can guarantee the make full use of to flue gas heat energy in every holding vessel, can the energy saving, avoids the waste of the energy.

Drawings

FIG. 1 is a schematic view of the overall process of a flue gas heat energy recycling device;

fig. 2 is a specific flow diagram of the flue gas heat energy recovery device.

In the figure, 1, a drying device; 101. a drying drum; 102. a gas heating device; 2. a stirring building; 3. an asphalt heating and conveying system; 301. an asphalt storage tank; 302. a heat conducting oil tank; 303. a heating tank; 304. conveying the asphalt; 305. a heat exchange oil pipe; 306. a first heat exchange sleeve; 4. a flue gas heat energy recovery device; 41. a flue gas conveying main pipe; 42. a flue gas temporary storage tank; 43. a flue gas conveying pipeline; 44. a dust purification treatment device; 441. a cyclone separator; 442. a bag-type dust collector; 443. a spray tower; 444. connecting a pipeline; 5. a first heat conducting component; 51. a first fan; 52. a first air duct; 6. a second heat conducting assembly; 61. a second fan; 62. a second air duct; 7. a second heat exchange sleeve; 8. a third heat exchange sleeve; 9. a valve; 10. a flue gas transfer tank; 11. and (4) flue gas conveying branch pipes.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, for the utility model discloses a flue gas heat recovery utilizes device for asphalt concrete production, include the flue gas heat recovery device 4 that is connected with drying equipment 1, stirring building 2 and pitch heating conveying system 3, drying equipment 1 includes a stoving section of thick bamboo 101 and the gas heating device 102 that is connected with a stoving section of thick bamboo 101, is provided with the gas vent on the stoving section of thick bamboo 101, when drying to the aggregate, starts gas heating device 102, and gas heating device 102 can dry to the aggregate in the stoving section of thick bamboo 101.

Referring to fig. 2, asphalt heating and conveying system 3 includes that asphalt stores jar 301 and heat conduction oil tank 302, store jar 303 of being connected with asphalt, store jar 301 intercommunication asphalt conveyer pipe 304 and heat transfer oil pipe 305 with heat conduction oil tank 302 intercommunication with asphalt, the outside of asphalt conveyer pipe 304 is provided with first heat transfer sleeve 306, heat transfer oil pipe 305 is linked together with first heat transfer sleeve 306, heat jar 303 heats asphalt, asphalt conveyer pipe 304 transmits asphalt, the high temperature conduction oil in the in-process heat conduction oil tank 302 of asphalt transmission can keep warm the heat transfer to asphalt, guarantee the temperature of asphalt in transmission process.

Referring to fig. 2, flue gas heat recovery unit 4 includes that the flue gas that is linked together with the gas vent carries and is responsible for 41, carry the flue gas that is responsible for 41 and keep in jar 42 with the flue gas, flue gas pipeline 43 that is linked together with flue gas jar 42 and set up dust purification unit 44 on flue gas pipeline 43, heat transfer oil pipe 305 link up and peg graft in flue gas jar 42 of keeping in, and heat transfer oil pipe 305 is the heliciform setting, the heat transfer can be carried out with the flue gas high temperature flue gas that jar 42 was kept in to the heat transfer oil pipe 305 that the heliciform set up can be abundant, the heat energy of utilization flue gas that can be.

Referring to fig. 2, the flue gas conveying main pipe 41 is communicated with a flue gas conveying branch pipe 11, the flue gas conveying branch pipe 11 is communicated with a flue gas transfer tank 10, high-temperature flue gas passes through the flue gas conveying branch pipe 11 and the flue gas transfer tank 10 and then enters the flue gas conveying main pipe 41, the flue gas conveying branch pipe 11 is provided with a valve 9, the valve 9 is in a closed state under a normal state, the valve 9 is opened when the flow of the flue gas is large, the high-temperature flue gas can be stored in the flue gas transfer tank 10, and the heat energy of the high-temperature flue gas is fully utilized.

Referring to fig. 2, the outer side of the flue gas conveying main pipe 41 is provided with a heat preservation layer, the heat preservation layer can be made of other heat preservation materials with heat preservation performance such as sponge, and the heat preservation layer can play a heat preservation role on flue gas in the flue gas conveying process, so that heat loss of the flue gas is prevented.

Referring to fig. 2, a second heat conducting assembly 6 is arranged outside the flue gas transit tank 10, the second heat conducting assembly 6 includes a second fan 61 fixedly connected with the flue gas transit tank 10 and a second air duct 62 linked with the second fan 61, the second air duct 62 is spirally arranged outside the flue gas transit tank 10, a third heat exchange sleeve 8 is arranged outside the first heat exchange sleeve 306, the second air duct 62 is inserted in the third heat exchange sleeve 8 in a penetrating manner, when high-temperature flue gas enters the flue gas transit tank 10, the second fan 61 is started, the second fan 61 drives air flow to enter the second air duct 62, the air flow in the second air duct 62 exchanges heat with the flue gas transit tank 10 in a flowing process, the air after heat exchange enters the third heat exchange sleeve 8, hot air flow in the third heat exchange sleeve 8 can further insulate heat of heat conducting oil in the first heat exchange sleeve 306, the heat conducting oil is ensured to keep a high-temperature state in the heat exchange process.

Referring to fig. 2, a first heat conducting assembly 5 is arranged outside the smoke temporary storage tank 42, the first heat conducting assembly 5 includes a first fan 51 fixedly connected to the smoke temporary storage tank 42 and a first air pipe 52 linked with the first fan 51, the first air pipe 52 is spirally arranged outside the smoke temporary storage tank 42, a second heat exchange sleeve 7 is arranged outside the heat exchange oil pipe 305, the first air pipe 52 is connected to the second heat exchange sleeve 7 in a penetrating manner, the first fan 51 is started, the first fan 51 is linked with the first air pipe 52, air flow in the first air pipe 52 can be fully exchanged with heat energy outside the smoke temporary storage tank 42, hot air in the first air pipe 52 can enter the second heat exchange sleeve 7, hot air in the second heat exchange sleeve 7 can play a heat preservation role in the heat exchange oil pipe 305, and heat loss of heat exchange oil is reduced in the flowing process of the heat exchange oil.

Referring to fig. 2, the dust purification processing apparatus 44 includes a cyclone 441 communicated with the flue gas conveying pipeline 43, a bag-type dust collector 442 communicated with the cyclone 441, and a spray tower 443 communicated with the bag-type dust collector 442, a connecting pipeline 444 is disposed between the cyclone 441 and the bag-type dust collector 442, the connecting pipeline 444 is communicated with the drying drum 101, and after the flue gas is primarily separated and filtered by the cyclone 441, the flue gas enters the drying drum 101, so that the aggregate can be dried by using the heat energy of the flue gas, the residual heat of the flue gas can be fully utilized, and the resources can be reasonably utilized.

The implementation principle of the embodiment is as follows: when utilizing a stoving section of thick bamboo 101 to dry the heating to the aggregate, high temperature flue gas in a stoving section of thick bamboo 101 can enter into the flue gas through the gas vent and carry and be responsible for 41, flue gas in the flue gas is carried and is responsible for 41 can supply and enter into flue gas and keep in jar 42, when flue gas flow is great, valve 9 can be opened, make high temperature flue gas enter into flue gas transfer jar 10, the heat transfer oil in heat transfer oil pipe 305 can carry out the heat transfer with the flue gas when keeping in jar 42 through the flue gas, need not set up the heating source in addition and just can realize the heating to the heat transfer oil, heat transfer oil after the heating can carry out heat transfer heat preservation to pitch, guarantee the temperature of pitch in transmission course.

The first fan 51 of the first fan 51 and the second fan 61, the first fan 51 of the second fan 61, the second fan 61 and the third fan are started simultaneously to respectively link the first air pipe 52 and the second air pipe 62 for heat exchange, hot air in the first air pipe 52 can enter the second heat exchange sleeve 7, hot air in the second heat exchange sleeve 7 can play a role in heat preservation of the heat exchange oil pipe 305, the second air pipe 62 drives air flow to enter the third heat exchange sleeve 8, hot air in the third heat exchange sleeve 8 can play a role in further heat preservation of heat conduction oil in the first heat exchange sleeve 306, and full utilization of high-temperature flue gas can be guaranteed.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims (7)

1. The utility model provides a flue gas heat recovery utilizes device for asphalt concrete production, includes flue gas heat recovery unit (4) that is connected with drying equipment (1), stirring building (2) and pitch heating conveying system (3), drying equipment (1) is including drying section of thick bamboo (101) and gas heating device (102) that are connected with drying section of thick bamboo (101), be provided with the gas vent on drying section of thick bamboo (101), pitch heating conveying system (3) are including pitch storage tank (301) and heat conduction oil tank (302), heating tank (303) of being connected with pitch storage tank (301), pitch conveyer pipe (304) and heat transfer oil pipe (305) that communicate with heat conduction oil tank (302) that pitch storage tank (301) communicate, the outside of pitch conveyer pipe (304) is provided with first heat transfer sleeve pipe (306), oil pipe heat transfer (305) are linked together with first heat transfer sleeve pipe (306), the method is characterized in that: flue gas heat recovery unit (4) carry being responsible for (41), the flue gas that is responsible for (41) and is linked together with the flue gas transport and keep in jar (42), flue gas pipeline (43) that are linked together with flue gas jar (42) and set up dust purification processing apparatus (44) on flue gas pipeline (43) including the flue gas that is linked together with the gas vent, heat transfer oil pipe (305) link up to peg graft and pass flue gas jar (42) of keeping in.

2. The flue gas heat energy recycling device for asphalt concrete production according to claim 1, characterized in that: the heat exchange oil pipe (305) is spirally distributed in the smoke temporary storage tank (42).

3. The flue gas heat energy recycling device for asphalt concrete production according to claim 1, characterized in that: the flue gas is kept in jar (42) outside and is provided with first heat conduction subassembly (5), first heat conduction subassembly (5) include with flue gas keep in jar (42) fixed connection first fan (51) and with first fan (51) first tuber pipe (52) that links mutually, first tuber pipe (52) are the heliciform and set up in the outside of flue gas and keep in jar (42), the outside of heat transfer oil pipe (305) is provided with second heat transfer sleeve pipe (7), first tuber pipe (52) link up and peg graft in second heat transfer sleeve pipe (7).

4. The flue gas heat energy recycling device for asphalt concrete production according to claim 3, characterized in that: the flue gas is carried and is gone up the intercommunication in person in charge (41) and is had flue gas to carry and be in charge (11), it changes jar (10) to be provided with the flue gas between jar (42) to keep in drying cylinder (101) and flue gas, flue gas is carried and is in charge (11) and is linked together with flue gas change jar (10), flue gas is carried and is provided with valve (9) on being in charge (11).

5. The flue gas heat energy recycling device for asphalt concrete production according to claim 4, characterized in that: the flue gas transfer tank is characterized in that a second heat conduction assembly (6) is arranged on the outer side of the flue gas transfer tank (10), the second heat conduction assembly (6) comprises a second fan (61) fixedly connected with the flue gas transfer tank (10) and a second air pipe (62) linked with the second fan (61), the second air pipe (62) is spirally arranged on the outer side of the flue gas transfer tank (10), a third heat exchange sleeve (8) is arranged on the outer side of the first heat exchange sleeve (306), and the second air pipe (62) is communicated and inserted into the third heat exchange sleeve (8).

6. The flue gas heat energy recycling device for asphalt concrete production according to claim 1, characterized in that: and a heat insulation layer is arranged on the outer side of the flue gas conveying main pipe (41).

7. The flue gas heat energy recycling device for asphalt concrete production according to claim 1, characterized in that: the dust purification treatment device (44) comprises a cyclone separator (441) communicated with the flue gas conveying pipeline (43), a bag-type dust remover (442) communicated with the cyclone separator (441), and a spray tower (443) communicated with the bag-type dust remover (442), wherein a connecting pipeline (444) is arranged between the cyclone separator (441) and the bag-type dust remover (442), and the connecting pipeline (444) is communicated with the drying cylinder (101).

Images