CN213363431U - Industrial kiln waste heat recovery device - Google Patents

Abstract

The utility model discloses an industrial kiln waste heat recovery device, which belongs to the technical field of waste heat recovery, and comprises an industrial kiln and a waste heat recovery box, a first heat conduction pipe is connected between the industrial kiln and the waste heat recovery box, a controller is arranged at the upper end of the waste heat recovery box, the heated water solution can be guided out to a device to be heated for use through heat exchange between the water solution and waste gas, the heat in the waste gas is recycled to the maximum extent, the temperature of the waste gas discharged to the environment is reduced, the pollution to the environment is effectively reduced, meanwhile, the temperature rise of the water solution can be accelerated by the arrangement of an auxiliary heat absorption piece, the adsorption of the heat of the waste gas can be continuously completed in the replacement process of the water solution, the heat efficiency of the kiln is improved by introducing a second heat conduction pipe into the industrial kiln, the energy consumption of fuel is saved, and the energy consumption is, removing harmful gases contained in the waste gas.

Description

Industrial kiln waste heat recovery device

Technical Field

The utility model relates to a waste heat recovery technical field, more specifically say, relate to an industrial kiln waste heat recovery device.

Background

The kiln is a device built by refractory materials for sintering products, and is a necessary facility in ceramic molding. The mankind has accumulated abundant kiln-making styles and experiences in the history of ceramic firing over ten thousand years. The technology of the kiln is continuously improved and developed from overground open-air stacking and pit digging burning in the original society to steamed bun-shaped flame-rising circular kilns, semi-inverted-flame horseshoe-shaped kilns, semi-slope dragon kilns and duck egg-shaped kilns, and then to the existing indoor air kilns and electric kilns.

The waste heat refers to sensible heat and latent heat which are not reasonably utilized in the original design in the put-in-operation industrial energy consumption device and are limited by history, technology, concept and the like, and comprises high-temperature waste gas waste heat, cooling medium waste heat, waste steam waste water waste heat, high-temperature product and slag waste heat, chemical reaction waste heat, combustible waste gas waste liquid, waste material waste heat and the like.

The internal heating temperature of the kiln is generally more than one thousand degrees, and the discharged waste gas contains higher waste heat and is generally directly discharged into the air, so that a lot of resources are wasted, and the production cost is increased. In addition, kiln tail gas often contains a large amount of smoke dust, and if the waste gas is directly discharged into the air, the environment is easily polluted.

SUMMERY OF THE UTILITY MODEL

Problem to exist among the prior art, an object of the utility model is to provide an industrial kiln waste heat recovery device, it can be through carrying out the heat exchange between aqueous solution and the waste gas, aqueous solution after will heating is derived and is used in treating the firing equipment, the heat to in the waste gas of maximize carries out recycle, and reduced the exhaust gas temperature who discharges to in the environment, effectively reduce the pollution to the environment, the intensification of aqueous solution can be accelerated on the one hand in the setting of supplementary heat absorbing part simultaneously, on the other hand can continue to accomplish the absorption to the waste gas heat in the change process of aqueous solution, through introducing the industrial kiln with the second heat pipe, the thermal efficiency of kiln has been improved, the fuel can be saved energy consumption, through the setting of clean room, detach the harmful gas who contains in the waste gas.

In order to solve the above problem, the utility model adopts the following technical scheme:

an industrial kiln waste heat recovery device comprises an industrial kiln and a waste heat recovery box, wherein a first heat conduction pipe is connected between the industrial kiln and the waste heat recovery box, the waste heat recovery box is provided with a controller at the upper end, a liquid inlet pipe with a first electric valve is connected to the upper box surface of the waste heat recovery box, the bottom end of the liquid inlet pipe penetrates through the upper box surface of the waste heat recovery box and extends into the waste heat recovery box, the liquid inlet pipe is positioned at the side edge of the controller, a liquid outlet pipe with a second electric valve is connected to the lower part of the side box surface of the waste heat recovery box, the liquid outlet pipe penetrates through the right box surface of the waste heat recovery box, a separation plate is fixedly connected between the upper box surface and the inner wall of the right box surface in the waste heat recovery box, a purification chamber is formed between the separation plate, the upper box surface and the right box surface, a circulation hole is formed at the side end of the separation plate, a second heat conduction pipe is connected to the upper part of the side box surface of, the waste heat recovery box is internally injected with aqueous solution, and the inner wall of the waste heat recovery box is fixedly connected with a plurality of auxiliary heat absorbing pieces which are uniformly distributed. Can carry out the heat exchange between aqueous solution and waste gas, aqueous solution after will heating is derived and is used in treating the firing equipment, the maximize carries out recycle to the heat in the waste gas, and the exhaust gas temperature who discharges to the environment has been reduced, effectively reduce the pollution to the environment, the intensification of aqueous solution can be accelerated to the setting of supplementary heat absorbing part simultaneously on the one hand, on the other hand can continue to accomplish the absorption to the waste gas heat in the change process of aqueous solution, through introducing the second heat pipe in the industrial kiln, the thermal efficiency of kiln has been improved, the fuel energy consumption is saved, through the setting of clean room, detach the harmful gas who contains in the waste gas.

Furthermore, the auxiliary heat absorbing part is a heat absorbing block connected with the inner wall of the waste heat recovery box, an accommodating cavity is arranged inside the heat absorbing block, heat conducting oil is filled in the accommodating cavity, when the temperature of aqueous solution in the waste heat recovery box reaches a certain value, the aqueous solution is discharged through the liquid outlet pipe to be used in the occasion needing to be heated, in the process of supplementing fresh water after the aqueous solution is discharged, the auxiliary heat absorbing part absorbs partial heat in the waste gas, the temperature of the heat conducting oil rises after the heat conducting oil is heated, after the fresh water is injected into the waste heat recovery box, the temperature rising process of the fresh water is accelerated under the action of the heat of subsequent waste gas and the heat conducting oil, so that the heat recovery efficiency is higher, a plurality of uniformly distributed water guide holes are arranged at the outer end of the heat absorbing block, when the aqueous solution is discharged through the liquid outlet pipe, the water guide holes are arranged so that the aqueous solution is not easy, and the heat absorption block is made of heat conduction materials, so that when the waste gas is contacted with the heat absorption block, the heat of the waste gas can be better transferred to heat conduction oil, and meanwhile, the heat when the temperature of the heat conduction oil is increased can be transferred to the aqueous solution.

Further, be equipped with heat transfer structure in the waste heat recovery case, heat transfer structure includes the connecting pipe, the annular heat-transfer pipe that links to each other through connecting pipe and first heat pipe, set firmly and all with distribute the main heat-transfer pipe on the annular heat-transfer pipe, set firmly the more than one auxiliary heat-transfer pipe on main heat-transfer pipe, the annular heat-transfer pipe is linked together with the connecting pipe, main heat-transfer pipe is linked together with the annular heat-transfer pipe, auxiliary heat-transfer pipe is linked together with main heat-transfer pipe, main heat-transfer pipe is towards the heat absorption piece, auxiliary heat-. The open end that the annular heat transfer pipe was kept away from to main heat transfer pipe is towards the heat absorption piece, the under shed end of auxiliary heat transfer pipe is the slope upwards setting for main heat transfer pipe, the under shed end of auxiliary heat transfer pipe is the slope downwards setting for main heat transfer pipe, the special shape of auxiliary heat transfer pipe sets up the transport speed that can accelerate the hot waste gas that gets into in the main heat transfer pipe, heat transfer structure's setting can be with the leading-in waste heat recovery incasement that the hot waste gas that comes out in the first heat transfer pipe is faster, make hot waste gas earlier react with auxiliary heat absorbing member and make auxiliary heat absorbing member heat-rising, concrete operation is that hot waste gas is through the connecting pipe, the annular heat transfer pipe is sent into in the main heat transfer pipe, the speed of the hot waste gas of getting into in the main heat transfer pipe is accelerating output under the effect of auxiliary heat transfer pipe.

Furthermore, at least one heat conduction part is fixedly arranged between every two adjacent heat absorption blocks, so that when the heat transfer structure rapidly transfers heat to the auxiliary heat absorption piece positioned on the lower side, other auxiliary heat absorption pieces positioned on the upper side can absorb the heat of the auxiliary heat absorption piece positioned on the lower side through the arrangement of the heat conduction parts, and the temperature is rapidly increased.

Further, waste heat recovery bottom of the case end fixedly connected with motor, motor and controller electric connection, the output of motor run through and extend to the waste heat recovery incasement, the output of motor is connected with helical blade, helical blade is located inside the heat absorption piece, in the use, the starter motor, the motor drives helical blade and rotates to accelerate the flow of waste heat recovery incasement aqueous solution, make the heat exchange efficiency between aqueous solution and the waste gas higher.

Further, the clean room includes a plurality of active carbon adsorption layers, both ends respectively with waste heat recovery case and baffling looks joint about the active carbon adsorption layer, adsorb the harmful gas that contains in the waste gas that gets into the clean room through the active carbon adsorption layer, make exhaust waste gas be comparatively clean waste gas.

Furthermore, the left inner wall of the waste heat recovery box is fixedly connected with a temperature sensor, the temperature sensor is positioned between two heat absorption blocks, the temperature sensor is electrically connected with the controller, the critical temperature of the temperature sensor is preset and stored in the controller, when the temperature of the aqueous solution reaches the critical temperature, the temperature sensor transmits a sensed temperature signal to the controller, and the controller controls the second electric valve to be opened, so that the aqueous solution is discharged through the liquid outlet pipe.

Furthermore, the outer end of the waste heat recovery tank is fixedly connected with a liquid level sensor, the liquid level sensor is electrically connected with a controller, the liquid level sensor and the inner bottom end of the waste heat recovery tank are located on the same horizontal plane, when the water solution reaching the critical temperature is discharged through a liquid outlet pipe, when the water solution is completely discharged, the liquid level sensor does not detect the water level, a signal is transmitted to the controller, the controller controls the first electric valve to be opened, and new water is injected into the waste heat recovery tank through the liquid inlet pipe.

Furthermore, the horizontal liquid level of the aqueous solution is always lower than the horizontal plane where the bottom end of the through hole is located, so that the liquid level of the aqueous solution is not easy to flow into the purification chamber from the through hole due to overhigh liquid level and flow out of the purification chamber, and a filter screen is fixedly connected between the upper inner wall and the lower inner wall of the through hole to intercept particle impurities contained in the waste gas.

Furthermore, a heat insulation layer is fixedly connected to the outer end of the first heat conduction pipe, so that when heat in hot waste gas in the industrial kiln is guided into the waste heat recovery box through the first heat conduction pipe, the heat is not easy to dissipate to the external environment due to the arrangement of the heat insulation layer.

Compared with the prior art, the utility model has the advantages of:

(1) this scheme can be through carrying out the heat exchange between aqueous solution and the waste gas, aqueous solution after will heating is derived and is used in treating the firing equipment, the maximize carries out recycle to the heat in the waste gas, and the exhaust gas temperature who discharges to the environment has been reduced, effectively reduce the pollution to the environment, the intensification of aqueous solution can be accelerated on the one hand in the setting of supplementary heat absorbing member simultaneously, on the other hand can continue to accomplish the thermal absorption of waste gas in the change process of aqueous solution, through introducing the second heat pipe in the industrial kiln, the thermal efficiency of kiln has been improved, fuel saving energy consumption, setting through the clean room, detach the harmful gas who contains in the waste gas.

(2) The auxiliary heat absorbing part comprises a heat absorbing block, the heat absorbing block is connected with the inner wall of the waste heat recovery box, an accommodating cavity is formed in the heat absorbing block, heat conducting oil is filled in the accommodating cavity, when the temperature of water solution in the waste heat recovery box reaches a certain value, the water solution is discharged through a liquid outlet pipe to be used in an occasion needing to be heated, the auxiliary heat absorbing part absorbs part of heat in waste gas in the process of supplementing fresh water after the water solution is discharged, the temperature of the heat conducting oil rises after the heat conducting oil is heated, after the fresh water is injected into the waste heat recovery box, the temperature rising process of the fresh water is accelerated under the action of the heat of subsequent waste gas and the heat conducting oil, so that the heat recovery efficiency is higher, a plurality of uniformly distributed water guide holes are formed in the outer end of the heat absorbing block, when the water solution is discharged through the liquid outlet pipe, the water guide holes are arranged so that the water, and the heat absorption block is made of heat conduction materials, so that when the waste gas is contacted with the heat absorption block, the heat of the waste gas can be better transferred to heat conduction oil, and meanwhile, the heat when the temperature of the heat conduction oil is increased can be transferred to the aqueous solution.

(3) The waste heat recovery box is internally provided with a heat transfer structure, the heat transfer structure comprises a connecting pipe which is in threaded connection with the inside of the first heat conducting pipe, an annular heat transfer pipe which is provided with one end of the connecting pipe away from the first heat conducting pipe, a plurality of main heat transfer pipes which are uniformly distributed on the upper part of the annular heat transfer pipe and at least one auxiliary heat transfer pipe which is fixedly arranged on the outer wall of the main heat transfer pipe, the annular heat transfer pipe is communicated with the connecting pipe, the main heat transfer pipe is communicated with the annular heat transfer pipe, the auxiliary heat transfer pipe is communicated with the main heat transfer pipe, the open end of the main heat transfer pipe, which is away from the annular heat transfer pipe, faces towards the heat absorption block, the lower open end of the auxiliary heat transfer pipe is obliquely and upwards arranged relative to the main heat transfer pipe, the lower open end of the auxiliary heat transfer pipe is obliquely and downwards arranged relative to, the hot waste gas is firstly reacted with the auxiliary heat absorbing part to heat the auxiliary heat absorbing part, the specific operation is that the hot waste gas is sent into the main heat transfer pipe through the connecting pipe and the annular heat transfer pipe, the hot waste gas entering the main heat transfer pipe accelerates the output speed under the action of the auxiliary heat transfer pipe and then reacts with the aqueous solution, and the hot waste gas gradually moves to the central part close to the aqueous solution under the guiding action of the auxiliary heat absorbing part.

(4) At least one heat conduction part is fixedly arranged between every two adjacent heat absorption blocks, so that when the heat transfer structure rapidly transfers heat to the auxiliary heat absorption piece positioned on the lower side, other auxiliary heat absorption pieces positioned on the upper side can absorb the heat of the auxiliary heat absorption piece positioned on the lower side through the arrangement of the heat conduction parts, and the temperature is rapidly increased.

(5) The bottom end fixedly connected with motor of waste heat recovery case, motor and controller electric connection, the output of motor runs through and extends to the waste heat recovery incasement, and the output of motor is connected with helical blade, and helical blade is located inside the heat absorption piece, in the use, starter motor, motor drive helical blade rotate to accelerate the flow of waste heat recovery incasement aqueous solution, make the heat exchange efficiency between aqueous solution and the waste gas higher.

(6) The clean room includes a plurality of active carbon adsorption layers, both ends respectively with waste heat recovery case and baffle looks joint about the active carbon adsorption layer, come the harmful gas that contains in the absorption entering the waste gas in the clean room through the active carbon adsorption layer, make exhaust waste gas be comparatively clean waste gas.

(7) The left inner wall of the waste heat recovery box is fixedly connected with a temperature sensor, the temperature sensor is electrically connected with the controller between the temperature sensor and the two heat absorption blocks, the critical temperature of the temperature sensor is preset, the critical temperature is stored in the controller, when the temperature of the aqueous solution reaches the critical temperature, the temperature sensor transmits a sensed temperature signal to the controller, and the controller controls the second electric valve to be opened, so that the aqueous solution is discharged through the liquid outlet pipe.

(8) The waste heat recovery case outer end fixedly connected with level sensor, level sensor and controller electric connection, level sensor and the interior bottom of waste heat recovery case are located same horizontal plane, and when the aqueous solution that will reach critical temperature was discharged through the drain pipe, when the aqueous solution was discharged completely, when level sensor did not detect the aqueous solution, with signal transmission to controller, the first motor-operated valve of controller control was opened, pours into new water into the waste heat recovery incasement through the feed liquor pipe.

(9) The horizontal liquid level of the aqueous solution is always lower than the horizontal plane of the bottom end in the through hole, so that the liquid level of the aqueous solution is not easy to flow into the purifying chamber from the through hole due to overhigh liquid level and flow out from the purifying chamber, and a filter screen is fixedly connected between the upper inner wall and the lower inner wall of the through hole to intercept particle impurities contained in the waste gas.

(10) The outer end of the first heat conduction pipe is fixedly connected with a heat insulation layer, so that when heat in hot waste gas in the industrial kiln is guided into the waste heat recovery box through the first heat conduction pipe, the heat is not easy to dissipate to the external environment due to the arrangement of the heat insulation layer.

Drawings

Fig. 1 is a schematic front structural view of the present invention;

FIG. 2 is a schematic sectional view of the waste heat recovery tank of the present invention;

FIG. 3 is a schematic view of the structure at A in FIG. 2;

fig. 4 is a schematic perspective view of the heat transfer structure of the present invention;

fig. 5 is a schematic structural view of the purifying chamber part of the present invention;

fig. 6 is a schematic perspective view of the heat absorbing block of the present invention;

fig. 7 is a partial block diagram of the present invention.

The reference numbers in the figures illustrate:

11 a first heat conduction pipe, 12 a heat insulation layer, 21 a waste heat recovery box, 22 a liquid inlet pipe, 23 a second heat conduction pipe, 241 a blocking plate, 242 a circulation hole, 243 a filter screen, 25 a liquid outlet pipe, 26 a motor, 27 a helical blade, 31 a heat absorption block, 32 a heat conduction oil, 33 a containing cavity, 34 a water guide hole, 4 a temperature sensor, 5 a liquid level sensor, 6 a heat conduction part, 7 a heat conduction structure, 71 a connecting pipe, 72 a ring-shaped heat conduction pipe, 73 an auxiliary heat conduction pipe, 74 a main heat conduction pipe, 8 an industrial kiln, 9 a controller, 10 a purification chamber, 13 an aqueous solution and 14 an activated carbon adsorption layer.

Detailed Description

The drawings in the embodiments of the present invention will be combined; the technical scheme in the embodiment of the utility model is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the present invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all belong to the protection scope of the utility model.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted", "provided", "sleeved/connected", "connected", and the like are to be understood in a broad sense, such as "connected", which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1:

referring to fig. 1-7, an industrial kiln 8 waste heat recovery device includes an industrial kiln 8 and a waste heat recovery tank 21, a first heat pipe 11 is connected between the industrial kiln 8 and the waste heat recovery tank 21, and an insulation layer 12 is fixedly connected to an outer end of the first heat pipe 11, so that when heat in hot waste gas in the industrial kiln 8 is introduced into the waste heat recovery tank 21 through the first heat pipe 11, the heat is not easily dissipated to the external environment due to the arrangement of the insulation layer 12.

The upper end of the waste heat recovery tank 21 is provided with a controller 9, the upper end of the waste heat recovery tank 21 is connected with a liquid inlet pipe 22 with a first electric valve, the liquid inlet pipe 22 is connected with an external water tank, the first electric valve is electrically connected with the controller 9, the bottom end of the liquid inlet pipe 22 penetrates through the top end in the waste heat recovery tank 21 and extends into the waste heat recovery tank 21, the specific positions of the liquid inlet pipe 22 and the controller 9 on the upper tank surface of the waste heat recovery tank 21 are determined according to the installation conditions, the liquid inlet pipe 22 is positioned on the left side of the controller 9 in the figure 1, the right end of the waste heat recovery tank 21 is connected with a liquid outlet pipe 25 with a second electric valve, the liquid outlet pipe 25 is connected with external equipment to be heated, the second electric valve is electrically connected with the controller 9, the liquid outlet pipe 25 penetrates through the right inner wall of the waste heat recovery tank 21, a blocking plate 241 is fixedly connected between the top end and the right inner wall in the waste heat, the baffle 241 has a circulation hole 242 drilled at the left end, the right end of the waste heat recovery box 21 is connected with the second heat pipe 23, the second heat pipe 23 is located at the upper side of the liquid outlet pipe 25, the second heat pipe 23 is communicated with the purification chamber 10, the second heat pipe 23 can be connected with the industrial kiln 8, the heating efficiency of the industrial kiln 8 is improved, the energy consumption is reduced, the waste heat recovery box 21 is internally injected with the aqueous solution 13, the horizontal liquid level of the aqueous solution 13 is always lower than the horizontal plane of the bottom end in the circulation hole 242, so that the liquid level of the aqueous solution 13 is not easy to flow into the purification chamber 10 from the circulation hole 242 due to overhigh height, and the aqueous solution flows out of the purification chamber 10, and the inner wall of the waste heat.

Referring to fig. 3, the auxiliary heat absorbing member includes a heat absorbing block 31, the heat absorbing block 31 is connected to an inner wall of the waste heat recovery tank 21, an accommodating cavity 33 is formed in the heat absorbing block 31, heat conducting oil 32 is filled in the accommodating cavity 33, when the temperature of the aqueous solution 13 in the waste heat recovery tank 21 reaches a certain value, the aqueous solution 13 is discharged through the liquid outlet pipe 25 to an occasion to be heated for use, in the process of supplementing fresh water after the aqueous solution 13 is discharged, the auxiliary heat absorbing member absorbs part of heat in the exhaust gas, the temperature of the heat conducting oil 32 rises after being heated, and after the fresh water is injected into the waste heat recovery tank 21, the temperature rising process of the fresh water is accelerated under the action of the heat of the subsequent exhaust gas and the heat conducting oil 32, so that the heat recovery efficiency is.

A heat transfer structure 7 is arranged in the waste heat recovery tank 21, the heat transfer structure 7 includes a connecting pipe 71 screwed into the first heat conduction pipe 11, an annular heat transfer pipe 72 fixedly provided with one end of the connecting pipe 71 far away from the first heat conduction pipe 11, a plurality of uniformly distributed main heat transfer pipes 74 fixedly provided with the upper part of the annular heat transfer pipe 72, and at least one auxiliary heat transfer pipe 73 fixedly provided on the outer wall of the main heat transfer pipe 74, the annular heat transfer pipe 72 is communicated with the connecting pipe 71, the main heat transfer pipe 74 is communicated with the annular heat transfer pipe 72, the auxiliary heat transfer pipe 73 is communicated with the main heat transfer pipe 74, the open end of the main heat transfer pipe 74 far away from the annular heat transfer pipe 72 faces the heat absorption block 31, the lower open end of the auxiliary heat transfer pipe 73 is arranged obliquely upwards relative to the main heat transfer pipe 74, the lower open end of the auxiliary heat transfer, the heat transfer structure 7 is configured to guide the hot exhaust gas coming out of the first heat pipe 11 into the waste heat recovery tank 21 more quickly, so that the hot exhaust gas reacts with the auxiliary heat absorbing member to heat the auxiliary heat absorbing member, specifically, the hot exhaust gas is sent into the main heat transfer pipe 74 through the connection pipe 71 and the annular heat transfer pipe 72, the speed of the hot exhaust gas entering the main heat transfer pipe 74 is accelerated by the auxiliary heat transfer pipe 73 to be output, and then the hot exhaust gas reacts with the aqueous solution 13, so that the hot exhaust gas gradually moves to a central position close to the aqueous solution 13 under the guiding action of the auxiliary heat absorbing member.

At least one heat conduction part 6 is fixedly arranged between every two adjacent heat absorption blocks 31, so that when the heat transfer structure 7 rapidly transfers heat to the auxiliary heat absorption member positioned on the lower side, other auxiliary heat absorption members positioned on the upper side can absorb the heat of the auxiliary heat absorption member positioned on the lower side through the arrangement of the heat conduction parts 6 to rapidly increase the temperature.

Referring to fig. 2, the bottom end of the waste heat recovery tank 21 is fixedly connected with a motor 26, the motor 26 is electrically connected with the controller 9, an output end of the motor 26 penetrates through and extends into the waste heat recovery tank 21, an output end of the motor 26 is connected with a helical blade 27, the helical blade 27 is located inside the heat absorption block 31, and in the using process, the motor 26 is started, and the motor 26 drives the helical blade 27 to rotate, so that the flow of the aqueous solution 13 in the waste heat recovery tank 21 is accelerated, and the heat exchange efficiency between the aqueous solution 13 and the exhaust gas is higher.

Referring to fig. 4, a filter screen 243 is fixedly connected between the upper and lower inner walls of the circulation hole 242 to intercept particulate impurities contained in the exhaust gas, the purification chamber 10 includes a plurality of activated carbon adsorption layers 14, the upper and lower ends of the activated carbon adsorption layers 14 are respectively clamped with the waste heat recovery tank 21 and the baffle plate 241, and harmful gas contained in the exhaust gas entering the purification chamber 10 is adsorbed by the activated carbon adsorption layers 14, so that the exhausted exhaust gas is relatively clean.

Referring to fig. 5, the heat absorbing block 31 is a hollow circular truncated cone structure, and the heat absorbing block 31 is made of a heat conducting material, so that when the exhaust gas contacts the heat absorbing block 31, the heat can be better transferred to the heat conducting oil 32, and simultaneously, the heat when the temperature of the heat conducting oil 32 rises can be transferred to the aqueous solution 13, a plurality of water guiding holes 34 which are uniformly distributed are formed in the outer end of the heat absorbing block 31, and when the aqueous solution 13 is discharged through the liquid outlet pipe 25, the arrangement of the water guiding holes 34 enables the aqueous solution 13 not to be blocked by the heat absorbing block 31 and not to flow out.

Referring to fig. 2 and 6, the temperature sensor 4 is fixedly connected to the left inner wall of the waste heat recovery tank 21, the temperature sensor 4 is located between two of the heat absorbing blocks 31, the temperature sensor 4 is electrically connected to the controller 9, the critical temperature of the temperature sensor 4 is preset and stored in the controller 9, when the temperature of the aqueous solution 13 reaches the critical temperature, the temperature sensor 4 transmits a sensed temperature signal to the controller 9, and the controller 9 controls the opening of the second electric valve, so that the aqueous solution 13 is discharged through the liquid outlet pipe 25.

Referring to fig. 1 and 6, the outer end of the waste heat recovery tank 21 is fixedly connected with a liquid level sensor 5, the liquid level sensor 5 is electrically connected with a controller 9, the liquid level sensor 5 and the inner bottom end of the waste heat recovery tank 21 are located on the same horizontal plane, when the aqueous solution 13 reaching the critical temperature is discharged through a liquid outlet pipe 25, when the aqueous solution 13 is completely discharged, and the liquid level sensor 5 does not detect the level of the aqueous solution, a signal is transmitted to the controller 9, the controller 9 controls the first electric valve to be opened, and new water is injected into the waste heat recovery tank 21 through a liquid inlet pipe 22.

In the using process, hot waste gas generated by heating in the industrial kiln 8 enters the waste heat recovery tank 21 through the first heat conduction pipe 11 and the heat transfer structure 7, the hot waste gas is firstly contacted with the heat absorption block 31 to transfer heat waves to the heat conduction oil 32, the temperature of the heat conduction oil 32 is gradually increased to be beneficial to the temperature rise of the aqueous solution 13, the heat absorption block 31 can also play a role in guiding the hot waste gas to enable the waste gas to move to the central part close to the aqueous solution 13 and then to be contacted with the aqueous solution 13 to transfer heat to the aqueous solution 13, the motor 26 can be started in the process to enable the motor 26 to drive the helical blade 27 to rotate, the flow of the aqueous solution 13 in the waste heat recovery tank 21 is accelerated, the heat exchange efficiency between the aqueous solution 13 and the waste gas is higher, the critical temperature of the temperature sensor 4 is preset and stored in the controller 9, when the temperature of the aqueous solution 13 reaches, the temperature sensor 4 transmits the sensed temperature signal to the controller 9, the controller 9 controls the second electric valve to open, so that the aqueous solution 13 is discharged through the liquid outlet pipe 25, when the aqueous solution 13 is completely discharged and the liquid level sensor 5 does not detect the aqueous level, the liquid level sensor 5 transmits the signal to the controller 9, the controller 9 controls the first electric valve to open, new water is injected into the waste heat recovery tank 21 through the liquid inlet pipe 22, a new round of waste gas waste heat recovery operation is performed, the heated aqueous solution 13 can be led out to equipment to be heated for use through heat exchange between the aqueous solution 13 and waste gas, the heat in the waste gas is recovered and utilized to the maximum extent, the temperature of the waste gas discharged to the environment is reduced, the pollution to the environment is effectively reduced, meanwhile, the auxiliary heat absorbing piece is arranged, on one hand, the temperature rise of the aqueous solution 13 can be accelerated, on the other hand, the adsorption of the waste gas heat can be continuously completed in the replacement process of the aqueous, by introducing the second heat conduction pipe 23 into the industrial kiln 8, the heat efficiency of the kiln is improved, the fuel energy consumption is saved, and harmful gases contained in waste gas are removed through the arrangement of the purifying chamber 10.

The above; is only a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; according to the technical scheme of the utility model and the improvement conception, equivalent substitution or change is carried out; are all covered by the protection scope of the utility model.

Claims (10)

1. The utility model provides an industrial kiln waste heat recovery device, includes industrial kiln (8) and waste heat recovery case (21), its characterized in that: a first heat conduction pipe (11) is connected between the industrial kiln (8) and the waste heat recovery box (21), a controller (9) is installed on the upper box face of the waste heat recovery box (21), a liquid inlet pipe (22) with a first electric valve is connected to the upper box face of the waste heat recovery box (21), the bottom end of the liquid inlet pipe (22) penetrates through the upper box face of the waste heat recovery box (21) and extends into the waste heat recovery box (21), a liquid outlet pipe (25) with a second electric valve is connected to the lower portion of the side box face of the waste heat recovery box (21), the liquid outlet pipe (25) penetrates through the right box face of the waste heat recovery box (21), a blocking plate (241) is fixedly connected between the inner walls of the upper box face and the right box face in the waste heat recovery box (21), a purification chamber (10) is formed between the blocking plate (241), the upper box face and the right box face, and a circulation hole (242) is formed in the side end of the blocking plate (241), the waste heat recovery device is characterized in that a second heat conduction pipe (23) is connected to the upper portion of the side box surface of the waste heat recovery box (21), the second heat conduction pipe (23) is located on the upper side of the liquid outlet pipe (25), the second heat conduction pipe (23) is communicated with the purification chamber (10), a water solution (13) is injected into the waste heat recovery box (21), and a plurality of auxiliary heat absorbing pieces which are uniformly distributed are fixedly connected to the inner wall of the waste heat recovery box (21).

2. The industrial kiln waste heat recovery device of claim 1, characterized in that: the auxiliary heat absorbing member is a heat absorbing block (31) connected with the inner wall of the waste heat recovery box (21), a containing cavity (33) is formed inside the heat absorbing block (31), heat conducting oil (32) is filled in the containing cavity (33), a plurality of uniformly distributed water guide holes (34) are formed in the outer end of the heat absorbing block (31), the heat absorbing block (31) is of a hollow circular truncated cone structure, and the heat absorbing block (31) is made of heat conducting materials.

3. The industrial kiln waste heat recovery device of claim 2, characterized in that: the waste heat recovery box (21) is internally provided with a heat transfer structure (7), the heat transfer structure (7) comprises a connecting pipe (71), an annular heat transfer pipe (72) connected with the first heat transfer pipe (11) through the connecting pipe (71), a main heat transfer pipe (74) fixedly arranged and uniformly distributed on the annular heat transfer pipe (72), and at least more than one auxiliary heat transfer pipe (73) fixedly arranged on the main heat transfer pipe (74), wherein the annular heat transfer pipe (72) is communicated with the connecting pipe (71), the main heat transfer pipe (74) is communicated with the annular heat transfer pipe (72), the auxiliary heat transfer pipe (73) is communicated with the main heat transfer pipe (74), the main heat transfer pipe (74) faces the heat absorption block (31), and the auxiliary heat transfer pipe (73) is U-shaped or V-shaped.

4. The industrial kiln waste heat recovery device of claim 2, characterized in that: at least more than one heat conducting part (6) is fixedly arranged between every two adjacent heat absorbing blocks (31).

5. The industrial kiln waste heat recovery device of claim 2, characterized in that: the waste heat recovery box is characterized in that a motor (26) is fixedly connected to the bottom end of the waste heat recovery box (21), the motor (26) is electrically connected with the controller (9), the output end of the motor (26) is connected with a helical blade (27) and penetrates through and extends into the waste heat recovery box (21), and the helical blade (27) is located inside the heat absorption block (31).

6. The industrial kiln waste heat recovery device of claim 1, characterized in that: the purification chamber (10) comprises a plurality of activated carbon adsorption layers (14), and the activated carbon adsorption layers (14) are arranged in a gas passing area in the second heat conduction pipe (23).

7. The industrial kiln waste heat recovery device of claim 2, characterized in that: the waste heat recovery tank (21) is characterized in that a temperature sensor (4) is fixedly connected to the left inner wall of the waste heat recovery tank, the temperature sensor (4) is located between two heat absorption blocks (31), and the temperature sensor (4) is electrically connected with the controller (9).

8. The industrial kiln waste heat recovery device of claim 1, characterized in that: waste heat recovery case (21) outer end fixedly connected with level sensor (5), level sensor (5) and controller (9) electric connection, level sensor (5) and waste heat recovery case (21) bottom are located same horizontal plane.

9. The industrial kiln waste heat recovery device of claim 1, characterized in that: the horizontal liquid level of the aqueous solution (13) is always lower than the horizontal plane of the inner bottom end of the flow hole (242), and a filter screen (243) is arranged in the flow hole (242).

10. The industrial kiln waste heat recovery device of claim 1, characterized in that: the outer end of the first heat conduction pipe (11) is fixedly connected with a heat insulation layer (12).

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