CN213680341U - Preheating module of sludge drying oven and sludge drying oven - Google Patents
Preheating module of sludge drying oven and sludge drying oven Download PDFInfo
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- CN213680341U CN213680341U CN202022743978.0U CN202022743978U CN213680341U CN 213680341 U CN213680341 U CN 213680341U CN 202022743978 U CN202022743978 U CN 202022743978U CN 213680341 U CN213680341 U CN 213680341U
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Abstract
The application relates to a preheating module of a sludge drying oven and the sludge drying oven, wherein the preheating module comprises a preheating chamber and a heat supplementing chamber; the preheating chamber is communicated with the heat compensation chamber through an internal circulation air supply outlet and an internal circulation air return inlet; the heat compensation chamber, the internal circulation air supply outlet, the preheating chamber and the internal circulation air return inlet form an internal circulation structure; the internal circulation fan is used for generating internal circulation air in the internal circulation structure, the heat exchanger is used for exchanging heat for the generated internal circulation air to obtain thermal state internal circulation air, and the internal circulation structure is used for guiding the thermal state internal circulation air to the conveying mesh belt in the preheating chamber to preheat sludge on the conveying mesh belt. This application preheats just getting into oven mud, effectively improves sludge drying's efficiency.
Description
Technical Field
The application relates to the field of sludge drying, in particular to a preheating module of a sludge drying oven and the sludge drying oven.
Background
The traditional drying machine oven is generally divided into a first module, an air inlet module, a middle module and a tail module, sludge sequentially passes through the modules through an upper mesh belt and reversely returns to a discharge hole of the first module through a next mesh belt, and drying is completed.
The temperature of the sludge entering the drying machine oven from the first module is lower, about 15 ℃, when the surface temperature of the sludge reaches the temperature of a hot air wet bulb, the moisture on the surface of the sludge begins to evaporate, the existing drying machine oven directly dries and preheats the sludge, partial low-grade energy cannot be effectively utilized in the sludge drying and preheating stage, the comprehensive utilization rate of the energy is lower, and the energy efficiency of the system is lower. In addition, the discharged sludge at the discharge port has higher temperature, and is not beneficial to recovery and the like.
Based on the above problems of the conventional drying machine, the prior art provides an effective solution.
Disclosure of Invention
In order to solve the above technical problem or at least partially solve the above technical problem, the present application provides a preheating module of a sludge drying oven and a sludge drying oven.
In a first aspect, the application provides a preheating module of a sludge drying oven, wherein the preheating module comprises a preheating chamber and a heat supplementing chamber; the preheating chamber is communicated with the heat compensation chamber through an internal circulation air supply outlet and an internal circulation air return inlet; the heat compensation chamber, the internal circulation air supply outlet, the preheating chamber and the internal circulation air return inlet form an internal circulation structure; the internal circulation fan is used for generating internal circulation air in the internal circulation structure, the heat exchanger is used for exchanging heat for the generated internal circulation air to obtain thermal state internal circulation air, and the internal circulation structure is used for guiding the thermal state internal circulation air to the conveying mesh belt in the preheating chamber to preheat sludge on the conveying mesh belt.
Optionally, a plurality of groups of heat exchangers are arranged in the heat compensation chamber, and an internal circulation fan is correspondingly arranged in each group of heat exchangers.
Optionally, each group of heat exchangers consists of 2 heat exchangers, and the 2 heat exchangers are arranged in a V-shaped manner.
Optionally, the number of the heat exchangers arranged in the heat compensation chamber is 2, and the 2 groups of heat exchangers are 2 condensed water heat exchangers and 2 subcoolers respectively; the 2 condensed water heat exchangers are used for obtaining condensed water from an evaporator of the sludge drying equipment so as to exchange heat with internal circulating air through the condensed water; the 2 subcoolers are used for obtaining a refrigerant from the 2 condensers of the sludge drying equipment and exchanging heat with the internal circulating air through the refrigerant.
Optionally, the conveying mesh belt is divided into an upper mesh belt and a lower mesh belt; the internal circulation structure is used for guiding the thermal state internal circulation air to the middle upper mesh belt of the preheating chamber, preheating sludge on the upper mesh belt and cooling sludge on the lower mesh belt.
Optionally, a fresh air supply port is arranged below the preheating chamber.
Optionally, a partition plate is arranged between the preheating chamber and the heat compensation chamber, and an internal circulation air supply outlet and an internal circulation air return inlet are respectively arranged at the upper end and the lower end of the partition plate.
Optionally, a plurality of arc-shaped flow guide structures are arranged at the upper end of the preheating chamber; the plurality of flow guide structures are used for guiding the thermal state internal circulation air to the conveying mesh belt in the preheating chamber.
Optionally, the plurality of arc-shaped flow guiding structures are arranged at equal intervals and are gradually enlarged; and air equalizing plates are arranged between the plurality of flow guide structures and the transmission mesh belt.
In a second aspect, the present application provides a sludge drying oven comprising a preheating module as defined in any one of the above, the housing of the preheating module forming part of the oven housing.
Compared with the prior art, the technical scheme provided by the embodiment of the application has the following advantages:
according to the embodiment of the application, the internal circulation structure is built in the preheating module, the internal circulation fan and the heat exchanger are arranged in the heat supplementing chamber from top to bottom to generate the thermal-state internal circulation air in the internal circulation structure, the sludge which just enters the drying oven is preheated, and the sludge drying efficiency is effectively improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a front view of a preheat module provided in various embodiments of the present application;
fig. 2 is a side view of a preheat module provided in various embodiments of the present application.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the following description, suffixes such as "module", "part", or "unit" used to denote elements are used only for the convenience of description of the present invention, and have no specific meaning in itself. Thus, "module", "component" or "unit" may be used mixedly.
Example one
The embodiment of the utility model provides a preheating module of a sludge drying oven, as shown in figure 1, the preheating module comprises a preheating chamber 1 and a heat supplementing chamber 2; the preheating chamber is communicated with the heat compensation chamber through an internal circulation air supply outlet and an internal circulation air return inlet; the heat compensation chamber, the internal circulation air supply outlet, the preheating chamber and the internal circulation air return inlet form an internal circulation structure; the upper part and the lower part of the heat supply chamber are respectively provided with an internal circulation fan 3 and a heat exchanger 4, the internal circulation fan is used for generating internal circulation air in the internal circulation structure, the heat exchanger is used for exchanging heat for the generated internal circulation air to obtain thermal state internal circulation air, and the internal circulation structure is used for guiding the thermal state internal circulation air to a transmission mesh belt in the preheating chamber to preheat sludge on the transmission mesh belt. The motor part of the internal circulation fan is arranged outside the heat compensation chamber and used for improving the safety performance of the preheating module.
Mud is when preheating the module from 5 entering of upper screen belts, and its temperature only has about 15 ℃, the embodiment of the utility model provides a through construct the inner loop structure in preheating the module, arrange inner loop fan and heat exchanger from top to bottom in the concurrent heating room and produce the thermal state inner loop wind in the inner loop structure, realized preheating the oven mud that has just got into, preheat to the wet ball temperature of hot-blast evaporation that begins, effectively improved the mummified efficiency of mud.
Wherein, the heat exchange, the heat supplement and the heating have the same meaning. And a plurality of groups of heat exchangers are arranged in the heat compensation chamber, and each group of heat exchangers is correspondingly provided with an internal circulating fan. Optionally, each group of heat exchangers consists of 2 heat exchangers, and the 2 heat exchangers are arranged in a V-shaped manner. Optionally, the number of the heat exchangers arranged in the heat compensation chamber is 2, and the 2 groups of heat exchangers are 2 condensed water heat exchangers 103 and 2 subcoolers (a first subcooler 104 and a second subcooler 105), respectively; the 2 condensed water heat exchangers are used for obtaining condensed water from an evaporator of the sludge drying equipment so as to exchange heat with internal circulating air through the condensed water; the 2 subcoolers are used for obtaining a refrigerant from the 2 condensers of the sludge drying equipment and exchanging heat with the internal circulating air through the refrigerant. The two condensed water heat exchangers are connected in parallel and are provided with a condensed water inlet 106 and a condensed water outlet 107.
The heat exchanger and the subcooler of the condensate water in the preheating module utilize heat sources of the evaporator and the condenser, the energy is utilized in a cascade mode, the preheating module has strong adaptability to energy quality, hot water with low energy quality (water temperature of 60 ℃) can be utilized, high-temperature liquid refrigerant (95 ℃) with high quality can be utilized, and the comprehensive utilization rate of system energy is greatly improved. The arrangement of the subcooler provides the heat of the high-temperature liquid refrigerant for heating the sludge, and meanwhile, the refrigerant is subcooled in the subcooler, so that the excess heat of the system is reduced, and the energy efficiency of the heat pump is improved.
Optionally, the conveying mesh belt is divided into an upper mesh belt 5 and a lower mesh belt 6; the internal circulation structure is used for guiding the thermal state internal circulation air to the middle upper mesh belt of the preheating chamber, preheating sludge on the upper mesh belt and cooling sludge on the lower mesh belt. The preheating module simultaneously realizes the preheating of sludge which just enters the oven and the cooling of dry sludge which is about to leave the oven on the lower mesh belt.
Optionally, a fresh air supply port is arranged below the preheating chamber. The number of the fresh air supply ports is two, and the two fresh air supply ports are respectively a first fresh air supply port 101 and a second fresh air supply port 102. The air supply is realized through the air supply port, the sludge concentration in the system is reduced, and in addition, the supply of the fresh air with lower temperature is equivalent to the increase of partial cold quantity for the system.
In some embodiments, a partition 7 is arranged between the preheating chamber and the heat compensation chamber, and the upper end and the lower end of the partition are respectively provided with an internal circulation air supply outlet and an internal circulation air return outlet. Optionally, a plurality of arc-shaped flow guide structures 8 are arranged at the upper end of the preheating chamber; the plurality of flow guide structures are used for guiding the thermal state internal circulation air to the conveying mesh belt in the preheating chamber. Wherein the plurality of arc-shaped flow guide structures are arranged at equal intervals and are amplified step by step; and air equalizing plates 9 are arranged between the plurality of flow guide structures and the transmission mesh belt. The guide plates are sequentially arranged along the height of the air supply outlet of the internal circulation fan according to the quartering, the porosity of the air equalizing plate is 40%, and the arrangement of the guide plates and the air equalizing plate enables air distribution inside the oven to be uniform, so that sludge and hot air at each position on the mesh belt can be in full contact with each other for heat exchange.
Brief description the utility model discloses in preheat the principle of module.
The utility model provides a preheating module which is arranged on the right side of a first module of an oven and between the first module and an air inlet module; the preheating module is divided into a drying chamber and a heat compensation chamber, the middle of the preheating module is separated by a partition plate, the upper end of the partition plate is provided with an air inlet of an internal circulation fan, and the lower end of the partition plate is provided with a gap so that the heat compensation chamber is communicated with the drying chamber. The heat supply chamber is provided with a V-shaped heat exchanger, the preheating module is provided with two groups of V-shaped heat exchangers, a condensate water heat exchanger of the preheating module consists of 1 group of V-shaped heat exchangers, the condensate water heat exchanger is connected with condensate water in an evaporator of a heat pump system through a stainless steel pipe, and the condensate water at 60 ℃ is used for heating internal circulation air to preheat sludge; the other group of V-shaped heat exchangers consists of a subcooler A1 (a first subcooler 104) and a subcooler B (a second subcooler 105), wherein the subcooler A1 is connected with a condenser A1 of the air inlet module through a stainless steel pipe, and the subcooler B is connected with a condenser B of the middle module through a stainless steel pipe. High-temperature liquid refrigerant (90 ℃) flowing out of a condenser A1 of a heat pump A system and a condenser B of a heat pump B system is used for heating internal circulation air to preheat sludge, each group of V-shaped heat exchangers is provided with one internal circulation fan, and a preheating module is provided with two internal circulation fans; two air supply ports are arranged on the side of the heat supply chamber of the preheating module. The temperature of the sludge just enters the preheating module from the upper net belt is only about 15 ℃, and the sludge is heated to the temperature of a hot air wet bulb in the preheating module by internal circulation air and begins to evaporate. When the dry sludge of the lower mesh belt enters the preheating module, the surface temperature of the dry sludge is about 60 ℃, after the dry sludge is cooled by internal circulating air passing through the upper mesh belt, the surface temperature of the dry sludge is reduced to 40 ℃, and then the dry sludge leaves from the discharge hole.
Example two
The embodiment of the utility model provides a sludge drying oven, the oven includes like embodiment one arbitrary one preheat the module, the casing that preheats the module constitutes a part of oven casing.
In the specific implementation process of the embodiment, reference may be made to embodiment one, which has a corresponding technical effect.
The above embodiment numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
While the embodiments of the present invention have been described with reference to the accompanying drawings, the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many modifications may be made by one skilled in the art without departing from the spirit and scope of the present invention as defined in the appended claims.
Claims (10)
1. The preheating module of the sludge drying oven is characterized by comprising a preheating chamber and a heat supplementing chamber; the preheating chamber is communicated with the heat compensation chamber through an internal circulation air supply outlet and an internal circulation air return inlet; the heat compensation chamber, the internal circulation air supply outlet, the preheating chamber and the internal circulation air return inlet form an internal circulation structure; the internal circulation fan is used for generating internal circulation air in the internal circulation structure, the heat exchanger is used for exchanging heat for the generated internal circulation air to obtain thermal state internal circulation air, and the internal circulation structure is used for guiding the thermal state internal circulation air to the conveying mesh belt in the preheating chamber to preheat sludge on the conveying mesh belt.
2. The preheating module according to claim 1, wherein a plurality of groups of heat exchangers are arranged in the heat compensation chamber, and an internal circulation fan is correspondingly arranged in each group of heat exchangers.
3. The preheating module of claim 2, wherein each group of heat exchangers consists of 2 heat exchangers, the 2 heat exchangers being arranged in a V-shape.
4. The preheating module of claim 3, wherein the heat exchangers disposed in the heat-replenishing chamber are 2 groups, and the 2 groups of heat exchangers are 2 condensed water heat exchangers and 2 subcoolers, respectively; the 2 condensed water heat exchangers are used for obtaining condensed water from an evaporator of the sludge drying equipment so as to exchange heat with internal circulating air through the condensed water; the 2 subcoolers are used for obtaining a refrigerant from the 2 condensers of the sludge drying equipment and exchanging heat with the internal circulating air through the refrigerant.
5. The preheating module of claim 1, wherein the conveyor belt is divided into an upper layer belt and a lower layer belt; the internal circulation structure is specifically used for guiding the thermal state internal circulation air to the middle upper mesh belt of the preheating chamber, preheating sludge on the upper mesh belt and cooling sludge on the lower mesh belt.
6. The preheating module of claim 1, wherein a fresh air supply opening is provided below the preheating chamber.
7. The preheating module according to any one of claims 1 to 6, wherein a partition is provided between the preheating chamber and the heat-supplementing chamber, and an internal circulation air supply outlet and an internal circulation air return outlet are provided at upper and lower ends of the partition, respectively.
8. The preheating module of claim 7, wherein the upper end of the preheating chamber is provided with a plurality of arc-shaped flow guiding structures; the plurality of arc-shaped flow guide structures are used for guiding the thermal state internal circulation air to the conveying mesh belt in the preheating chamber.
9. The preheating module of claim 8, wherein the plurality of arcuate flow directing structures are equidistantly arranged and are progressively enlarged; and air equalizing plates are arranged between the arc-shaped flow guide structures and the transmission mesh belt.
10. A sludge drying oven, characterized in that the oven comprises a preheating module according to any one of claims 1-9, the housing of which constitutes a part of the oven housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022743978.0U CN213680341U (en) | 2020-11-24 | 2020-11-24 | Preheating module of sludge drying oven and sludge drying oven |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022743978.0U CN213680341U (en) | 2020-11-24 | 2020-11-24 | Preheating module of sludge drying oven and sludge drying oven |
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| CN213680341U true CN213680341U (en) | 2021-07-13 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114230132A (en) * | 2022-02-23 | 2022-03-25 | 北京清源华建环境科技有限公司 | Energy-saving drying method of sludge drying machine |
| CN114772893A (en) * | 2022-04-13 | 2022-07-22 | 湖南大自然环保股份有限公司 | Municipal sludge drying treatment device and method |
-
2020
- 2020-11-24 CN CN202022743978.0U patent/CN213680341U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114230132A (en) * | 2022-02-23 | 2022-03-25 | 北京清源华建环境科技有限公司 | Energy-saving drying method of sludge drying machine |
| CN114772893A (en) * | 2022-04-13 | 2022-07-22 | 湖南大自然环保股份有限公司 | Municipal sludge drying treatment device and method |
| CN114772893B (en) * | 2022-04-13 | 2023-09-29 | 湖南大自然环保股份有限公司 | Municipal sludge drying treatment device and method |
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Effective date of registration: 20220915 Address after: Room 407, 4th Floor, Building 4, No. 48, Zhongguancun South Street, Haidian District, Beijing 100081 Patentee after: BEIJING AQUAROOT ENVIRONMENT TECHNOLOGY CO.,LTD. Address before: No.2 workshop of Hunan Central Research Institute of Nonferrous Metals Co., Ltd., 339 Wangcheng Avenue, Wangcheng economic and Technological Development Zone, Changsha, Hunan 410000 Patentee before: Hunan Qingyuan Intelligent Manufacturing Equipment Co.,Ltd. |