阅读说明：本技术 高效物料加热装置 (High-efficient material heating device ) 是由 张丰阁 施俊鹏 于 2019-10-10 设计创作，主要内容包括：本发明涉及一种高效物料加热装置,属于回转窑技术领域,具体包括回转窑的进料端安装有低温烟气室,低温烟气室用于聚集低温烟气并排烟,回转窑靠近出料端的一侧至少安装有一组导烟室组件,导烟室组件主要由高温外烟室、高温内烟室和导烟管构成,高温外烟室设置在回转窑的外部,高温内烟室设置在回转窑的内部,高温外烟室与热烟气管相连接,高温外烟室和高温内烟室之间至少通过一个导烟管相连通,高温内烟室与导烟管一体连接,导烟管固定在回转窑的壁体通孔内,低温烟气室和高温内烟室之间通过多个烟气换热管相连接,回转窑内壁上还设置有多个支撑机构；本发明设计合理,能够有效避免窑体温度过高,造成窑体变形。(The invention relates to a high-efficiency material heating device, belonging to the technical field of rotary kilns, and particularly comprising a low-temperature flue gas chamber arranged at the feed end of the rotary kiln, wherein the low-temperature flue gas chamber is used for gathering low-temperature flue gas and discharging smoke, one side of the rotary kiln close to the discharge end is provided with at least one group of smoke guide chamber components, the smoke guide chamber components mainly comprise a high-temperature outer smoke chamber, the high-temperature inner smoke chamber is arranged outside the rotary kiln, the high-temperature inner smoke chamber is arranged inside the rotary kiln, the high-temperature outer smoke chamber is connected with a hot smoke pipe, the high-temperature outer smoke chamber is communicated with the high-temperature inner smoke chamber through at least one smoke guide pipe, the high-temperature inner smoke chamber is integrally connected with the smoke guide pipe, the smoke guide pipe is fixed in a through hole of the wall body of the rotary kiln, the low-temperature smoke chamber is connected with the high-temperature inner smoke chamber through a plurality of smoke heat exchange pipes, and a plurality of supporting mechanisms are further arranged on the inner wall of the rotary kiln; the kiln body deformation prevention device is reasonable in design, and can effectively avoid the deformation of the kiln body due to the fact that the temperature of the kiln body is too high.)

1. High-efficient material heating device, including the rotary kiln, its characterized in that: the rotary kiln is characterized in that a low-temperature flue gas chamber is arranged at the feed end of the rotary kiln and used for gathering low-temperature flue gas and discharging smoke, at least one group of smoke guide chamber components are arranged on one side, close to the discharge end, of the rotary kiln, the smoke guide chamber components mainly comprise a high-temperature outer flue chamber, a high-temperature inner flue chamber and a smoke guide pipe, the high-temperature outer flue chamber is arranged outside the rotary kiln, the high-temperature inner flue chamber is arranged inside the rotary kiln, the high-temperature outer flue chamber is connected with a hot flue gas pipeline, the high-temperature outer flue chamber and the high-temperature inner flue chamber are communicated through at least one smoke guide pipe, the high-temperature inner flue chamber is integrally connected with the smoke guide pipe, the smoke guide pipe is fixed in a through hole of a wall body of the rotary kiln, heat preservation and insulation layers are arranged on the inner wall of the smoke guide pipe, the low-temperature flue gas chamber and the high-temperature, the high-temperature outer smoke chamber is used for conveying high-temperature smoke to the high-temperature inner smoke chamber, and the high-temperature inner smoke chamber is used for conveying the high-temperature smoke to the plurality of smoke heat exchange tubes for heat exchange; the high-temperature outer smoke chamber mainly comprises an annular cover, an annular outer smoke chamber bottom plate and a rotary sealing mechanism, wherein the annular outer smoke chamber bottom plate is sleeved outside the rotary kiln, the annular outer smoke chamber bottom plate is fixedly connected with the smoke guide pipe, the annular cover is arranged on the annular outer smoke chamber bottom plate, and the rotary sealing mechanism is arranged between the annular cover and the annular outer smoke chamber bottom plate.

2. The efficient material heating apparatus of claim 1, wherein: and a plurality of supporting plates are also arranged between the annular outer smoke chamber bottom plate and the rotary kiln body.

3. The efficient material heating apparatus of claim 2, wherein: the high-temperature inner smoke chamber is an annular structure formed by combining a plurality of independent chamber units.

4. A high efficiency material heating apparatus as claimed in any one of claims 1 to 3, wherein: the inner walls of the rotary kiln, the high-temperature outer smoke chamber and the high-temperature inner smoke chamber are all provided with heat insulation layers, and the high-temperature inner smoke chamber and the smoke guide pipe are all made of heat-resistant steel and made of 0Cr25Ni 20.

5. The efficient material heating apparatus of claim 1, wherein: gaps are reserved among the high-temperature outer smoke chamber, the high-temperature inner smoke chamber and the wall body of the rotary kiln, and the gaps are used for preventing heat from being transferred to the shell of the rotary kiln and forming a heat dissipation channel.

6. The efficient material heating apparatus of claim 1, wherein: and a plurality of temperature sensors are arranged in the rotary kiln.

Technical Field

The invention relates to a high-efficiency material heating device, and belongs to the technical field of rotary kilns.

Background

The known rotary kiln heating device has two heating modes, namely an internal heating mode and an external heating mode, wherein the internal heating mode directly contacts a heating medium with a heated medium, so that the generated volatile gas has low heat value and low subsequent utilization value, and not only is energy waste caused, but also the energy waste is opposite to a clean and efficient utilization policy. The external heating type heating mode currently disclosed has jacket type heating and radiant tube type heating. The heat exchange area of jacket type heating can only be realized by increasing the equipment area, the heat efficiency is low, the processing capacity is low, and the large-scale production is influenced. Radiant tube heating adopts outside hot flue gas chamber mode of admitting air, and outside hot flue gas chamber sets up and is being close to the partial middle part position of rotary kiln, and hot flue gas import and discharge end department material can't effectively heat, and heat utilization rate is low. The temperature of the contact part of the hot flue gas and the equipment is very high, the requirements on the material and the strength of the equipment are high, the thermal stress is difficult to eliminate, the heat loss is increased, the equipment investment is increased, and the long-term operation of the equipment is not facilitated.

Disclosure of Invention

In order to solve the technical problems in the prior art, the invention provides the high-efficiency material heating device which is reasonable in design, can effectively avoid the deformation of a kiln body caused by overhigh temperature of the kiln body and is small in heat loss.

In order to achieve the purpose, the technical scheme adopted by the invention is that the high-efficiency material heating device comprises a rotary kiln, wherein a low-temperature smoke chamber is arranged at the feeding end of the rotary kiln, the low-temperature smoke chamber is used for gathering low-temperature smoke and discharging smoke, at least one group of smoke guide chamber components are arranged at one side of the rotary kiln close to the discharging end, the smoke guide chamber components mainly comprise a high-temperature outer smoke chamber, a high-temperature inner smoke chamber and a smoke guide pipe, the high-temperature outer smoke chamber is arranged outside the rotary kiln, the high-temperature inner smoke chamber is arranged inside the rotary kiln, the high-temperature outer smoke chamber is connected with a hot smoke pipeline, the high-temperature outer smoke chamber and the high-temperature inner smoke chamber are communicated through at least one smoke guide pipe, the high-temperature inner smoke chamber is integrally connected with the smoke guide pipe, the smoke guide pipe is fixed in a through hole of the wall body of the rotary, the low-temperature flue gas chamber is connected with the high-temperature inner flue gas chamber through a plurality of flue gas heat exchange tubes, the inner wall of the rotary kiln is also provided with a plurality of supporting mechanisms for supporting the flue gas heat exchange tubes, the high-temperature outer flue gas chamber is used for conveying high-temperature flue gas to the high-temperature inner flue gas chamber, and the high-temperature inner flue gas chamber is used for conveying the high-temperature flue gas to the plurality of flue gas heat exchange tubes for heat exchange; the high-temperature outer smoke chamber mainly comprises an annular cover, an annular outer smoke chamber bottom plate and a rotary sealing mechanism, wherein the annular outer smoke chamber bottom plate is sleeved outside the rotary kiln, the annular outer smoke chamber bottom plate is fixedly connected with the smoke guide pipe, the annular cover is arranged on the annular outer smoke chamber bottom plate, and the rotary sealing mechanism is arranged between the annular cover and the annular outer smoke chamber bottom plate.

Preferably, a plurality of supporting plates are further arranged between the annular outer smoke chamber bottom plate and the rotary kiln body.

Preferably, the high-temperature inner smoke chambers are all mainly of annular structures formed by combining a plurality of independent chamber units.

Preferably, the inner walls of the rotary kiln, the high-temperature outer smoke chamber and the high-temperature inner smoke chamber are all provided with heat insulation layers, and the high-temperature inner smoke chamber and the smoke guide pipe are all made of heat-resistant steel and made of 0Cr25Ni 20.

Preferably, gaps are reserved among the high-temperature outer smoke chamber, the high-temperature inner smoke chamber and the wall body of the rotary kiln, and the gaps are used for preventing heat from being transferred to the shell of the rotary kiln and forming a heat dissipation channel.

Preferably, a plurality of temperature sensors are installed in the rotary kiln.

Compared with the prior art, the invention has the following technical effects: the hot flue gas is generated by special combustion equipment and then is input into the high-temperature outer flue chamber of the rotary kiln through a pipeline, so that the control of the combustion condition and the convenience in maintenance are facilitated; the inner walls of the rotary kiln, the high-temperature outer smoke chamber, the high-temperature inner smoke chamber and the smoke guide pipe are all provided with heat insulation layers, and meanwhile, enough gaps are reserved among the high-temperature outer smoke chamber, the high-temperature inner smoke chamber and the rotary kiln, so that the temperature of a kiln body of the rotary kiln is effectively controlled from the two aspects of heat transfer inhibition and heat dissipation enhancement, the heat dissipation loss is greatly reduced, and the rotary kiln is ensured not to deform, thereby avoiding the phenomenon that in the prior art, a kiln skin deforms due to the fact that a radiation pipe is directly connected with the kiln body, the temperature of the kiln body is high, and; meanwhile, the heat exchange tubes in the rotary kiln are more convenient to arrange, simple to arrange and convenient to design, construct and maintain; the high-temperature inner smoke chamber and the smoke guide pipe are made of 0Cr25Ni20 heat-resistant steel, so that the service life is longer; high-temperature hot flue gas is discharged out of the system through the low-temperature flue gas chamber after exchanging heat with materials through the flue gas heat exchange tube, so that the crossing with high-temperature gas generated by a heated substance is avoided, and the effectiveness and the cleanliness of the gas generated by the heated substance are ensured; the rotary kiln is provided with a plurality of temperature detection devices, so that the control of a heat supply system of the whole device, the control of the rotating speed of the rotary kiln and the control of the material heating degree are realized.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a first structural schematic diagram of a smoke guide chamber assembly according to the present invention.

Fig. 3 is a schematic structural diagram of a smoke guide chamber component in the invention.

Fig. 4 is a third schematic structural diagram of a smoke guide chamber component in the invention.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in figure 1, the high-efficiency material heating device comprises a rotary kiln 1, a low-temperature smoke chamber 2 is arranged at the feeding end of the rotary kiln 1, the low-temperature smoke chamber 2 is used for gathering low-temperature smoke and discharging smoke, at least one group of smoke guide chamber components 3 are arranged at one side of the rotary kiln close to the discharging end, each smoke guide chamber component 3 mainly comprises a high-temperature outer smoke chamber 4, a high-temperature inner smoke chamber 5 and a smoke guide pipe 6, the high-temperature outer smoke chamber 4 is arranged outside the rotary kiln 1, the high-temperature inner smoke chamber 5 is arranged inside the rotary kiln 1, the high-temperature outer smoke chamber 4 is connected with a hot smoke pipeline, the high-temperature outer smoke chamber 4 is communicated with the high-temperature inner smoke chamber 5 through at least one smoke guide pipe 6, the high-temperature inner smoke chamber 5 is integrally connected with the smoke guide pipe 6, the smoke guide pipe 6 is fixed in a wall through hole of the rotary kiln 1, a heat preservation and insulation layer is arranged on the inner wall of the, the inner wall of the rotary kiln 1 is also provided with a plurality of supporting mechanisms 8 for supporting the flue gas heat exchange tubes, the high-temperature outer smoke chamber 4 is used for conveying high-temperature flue gas to the high-temperature inner smoke chamber, and the high-temperature inner smoke chamber 5 is used for conveying the high-temperature flue gas to the plurality of flue gas heat exchange tubes 7 for heat exchange; the high-temperature outer smoke chamber 4 mainly comprises an annular cover 9, an annular outer smoke chamber bottom plate 11 and a rotary sealing mechanism, wherein the annular outer smoke chamber bottom plate 11 is sleeved outside the rotary kiln 1, the annular outer smoke chamber bottom plate 11 is fixedly connected with the smoke guide pipe 6, the annular cover 9 is installed on the annular outer smoke chamber bottom plate 11, and the rotary sealing mechanism is arranged between the annular cover 9 and the annular outer smoke chamber bottom plate 11.

According to the invention, the low-temperature flue gas chamber is arranged at the feeding end of the rotary kiln, the flue gas guide chamber component is arranged at one side of the rotary kiln close to the discharging end, the flue gas guide chamber component is formed by connecting the high-temperature outer flue gas chamber and the high-temperature inner flue gas chamber through the flue gas guide pipe, the flue gas guide pipe is used for connecting the high-temperature outer flue gas chamber and the high-temperature inner flue gas chamber together and supporting the high-temperature outer flue gas chamber, the high-temperature inner flue gas chamber and the low-temperature flue gas chamber are connected through the flue gas heat exchange pipe, so that the high-temperature flue gas is guided into the flue gas heat exchange pipe for heat exchange, and is collected by the low-temperature flue gas chamber and then discharged after the heat exchange is finished, thereby avoiding the crossing with the. The high-temperature outer smoke chamber mainly comprises an annular cover and an annular outer smoke chamber bottom plate, the smoke guide pipe forms a communication channel between the high-temperature outer smoke chamber and the high-temperature inner smoke chamber and guides smoke into the high-temperature inner smoke chamber, the annular outer smoke chamber bottom plate is mainly used for supporting the annular cover and is convenient for installing a rotary sealing mechanism between the annular cover and the annular outer smoke chamber bottom plate, and the smoke guide pipe and the high-temperature inner smoke chamber are enabled to rotate along with the rotary kiln while the sufficient air tightness of the high-temperature outer smoke chamber is ensured. A plurality of supporting plates 10 are also arranged between the annular outer smoke chamber bottom plate 11 and the rotary kiln body 1. The backup pad is mainly consolidated outer smoke chamber bottom plate of annular, guarantees outer smoke chamber bottom plate of annular reliable and stable.

Wherein, the inner wall of the rotary kiln 1, the inner walls of the high-temperature outer smoke chamber 4 and the high-temperature inner smoke chamber 5 are all provided with heat insulation layers, and the high-temperature inner smoke chamber 5 and the smoke guide pipe 6 are all made of heat-resistant steel and made of 0Cr25Ni 20. The smoke guide pipe is internally provided with a heat preservation and insulation layer. Therefore, the heat can be reduced and directly transferred to the rotary kiln, and the temperature of the kiln body is overhigh. Gaps 12 are reserved between the high-temperature outer smoke chamber 4, the high-temperature inner smoke chamber 5 and the wall body of the rotary kiln 1, the gaps 12 are used for preventing heat from being transmitted to the rotary kiln shell, and meanwhile, a heat dissipation channel is formed, so that the kiln body can be cooled more effectively, the equipment can be ensured to run safely and stably for a long period, and the heat loss is small. A plurality of temperature sensors are arranged in the rotary kiln 1, so that the control of a heat supply system of the whole device, the control of the rotating speed of the rotary kiln and the control of the material heating degree are realized.

In addition, the smoke guide chamber component can be arranged in a plurality of ways as required and can be uniformly arranged from one side close to the discharge end of the rotary kiln to the direction of the feed end.

As shown in fig. 2, the high temperature outer smoke chamber 4 and the high temperature inner smoke chamber 5 are both an integrated annular cavity structure, and a smoke guide pipe connects the high temperature outer smoke chamber 4 and the high temperature inner smoke chamber 5.

As shown in fig. 3, the high temperature outer smoke chamber 4 and the high temperature inner smoke chamber 5 are both an integrated annular cavity structure, and two smoke guide pipes connect the high temperature outer smoke chamber 4 and the high temperature inner smoke chamber 5.

As shown in fig. 4, the high temperature outer smoke chamber 4 is an integrated annular cavity structure, the high temperature inner smoke chamber 5 is a fan-shaped structure formed by combining a plurality of independent chamber units, and the fan-shaped structure is connected with the high temperature outer smoke chamber through a smoke guide pipe.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included therein.