Dust heat recovery device
Through the design of multi-stage dust collector and air flow and dust conveying system, the problems of low dust flow control and heat transfer efficiency are solved, and efficient recovery of dust heat and reduction of equipment maintenance costs are achieved.
Patent Information
- Application Number
- CN202422644602.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-10-31
AI Technical Summary
Existing dust heat recovery devices have problems with dust flow control and heat transfer efficiency, and the equipment maintenance cost is high.
Using multi-stage dust collectors and airflow and dust conveying systems, the dust is cooled step by step and the airflow is heated step by step through gas-solid separation and heat exchange. Combined with cyclone dust collectors or filter-type dust collectors, the airflow drive device and dust supply source are used to recover dust heat.
It realizes the effective recovery of dust heat, improves heat transfer efficiency and reduces equipment maintenance costs.
Smart Images
Figure CN223425743U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a dust heat recovery device. Background Art
[0002] Industrial furnace smelting flue gas contains large amounts of high-temperature dust. This dust remains at a relatively high temperature after recovery (for example, through a high-temperature dust collector). However, there is currently a lack of effective means to recover the heat from this dust. The applicant has previously developed a dust heat recovery device that uses indirect heat exchange technology to transfer heat between the dust and another medium. However, this dust heat recovery device has difficulty controlling dust flow, ensuring heat transfer efficiency, and high equipment maintenance costs. Utility Model Content
[0003] The purpose of the utility model is to provide a dust heat recovery device to solve the technical problem of effectively recovering dust heat.
[0004] The dust heat recovery device of the utility model comprises: a dust removal system, which includes a multi-stage dust collector; an air flow conveying system, which includes an air intake channel connected to the air inlet of the to-be-dust-removed gas of the dust collectors at each stage and an exhaust channel connected to the exhaust port of the dust-removed gas of the dust collectors at each stage, the exhaust channel of any one stage of the dust collector is connected to the air intake channel of the next stage of the dust collector, and the air flow conveying system also comprises an air flow driving device; a dust conveying system, which includes an ash discharge channel connected to the ash discharge port of the dust collectors at each stage and an ash distribution channel connected to the air intake channel of the dust collectors at each stage, the ash distribution channel of any one stage of the dust collector is connected to the ash discharge channel of the next stage of the dust collector, and the ash distribution channel of the last stage of the dust collector is connected to a dust supply source.
[0005] As an optimization and / or instantiation of the above-mentioned dust heat recovery device, further, the dust supply source stores and supplies dust recovered from the smelting flue gas of the industrial furnace to the dust distribution channel of the last-stage dust collector.
[0006] As an optimization and / or instantiation of the above-mentioned dust heat recovery device, further, each stage of the dust collector adopts a cyclone dust collector or a filter element dust collector.
[0007] As an optimization and / or instantiation of the above-mentioned dust heat recovery device, further, the exhaust passage of any one-stage dust collector is connected to the air inlet passage of the next-stage dust collector through a corresponding airflow driving device.
[0008] As an optimization and / or instantiation of the above-mentioned dust heat recovery device, further, the exhaust passage of any one-stage dust collector is connected to the air inlet passage of the next-stage dust collector through a corresponding fan.
[0009] As an optimization and / or instantiation of the above-mentioned dust heat recovery device, further, the dust supply source supplies dust to the dust distribution channel of the last-stage dust collector through a pneumatic dust conveying device.
[0010] As an optimization and / or instantiation of the above-mentioned further dust heat recovery device, further, any one-stage dust collector is arranged below its next-stage dust collector.
[0011] When the dust heat recovery device of the present invention is working, the high-temperature dust is transported to the dust distribution channel of the last-stage dust collector, mixed with the airflow in the air intake channel of the last-stage dust collector, and then enters the last-stage dust collector for gas-solid separation. The hot airflow carries the heat of the dust and is discharged from the exhaust channel of the last-stage dust collector (heat recovery is subsequently performed), and the cooled dust (medium- and high-temperature dust) is discharged from the dust outlet of the last-stage dust collector; these dusts are then mixed with the airflow in the air intake channel of the previous-stage dust collector, and a similar process is repeated. As a result, the dust is cooled step by step from the last-stage dust collector to the first-stage dust collector, while the airflow is heated step by step from the first-stage dust collector to the last-stage dust collector, thereby effectively extracting the heat of the dust.
[0012] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Additional aspects and advantages of the present invention will be partially given in the following description, partially become apparent from the following description, or be learned through practice. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The drawings that constitute part of this specification are used to assist in understanding the present invention. The contents provided in the drawings and the related descriptions in this specification can be used to explain the present invention, but do not constitute an improper limitation on the present invention.
[0014] Figure 1 This is a structural schematic diagram of a dust heat recovery device according to an embodiment of the present utility model.
[0015] Figure 1 The solid arrows indicate the direction of airflow, and the dashed arrows indicate the direction of dust flow. DETAILED DESCRIPTION
[0016] The following is a clear and complete description of the present invention in conjunction with the accompanying drawings. A person skilled in the art will be able to implement the present invention based on these descriptions. Before describing the present invention in conjunction with the accompanying drawings, it should be noted that:
[0017] The technical solutions and technical features provided in the various parts including the following description can be combined with each other in the case of no conflict. In addition, in the case of possibility, the technical solutions, technical features and related combinations can be endowed with a specific technical subject and protected by a related patent.
[0018] The embodiments of the utility model involved in the following description are generally only part of the embodiments but not all the embodiments, and all other embodiments obtained by a person skilled in the art without creative labor based on these embodiments should belong to the scope of patent protection.
[0019] Regarding the terms and units in the specification: the terms "include", "contain", "have" and any variants thereof in the specification and the corresponding claims and related parts are intended to cover non-exclusive inclusion. In addition, other related terms and units can be reasonably interpreted based on the related content provided in the specification.
[0020] Figure 1 The structure diagram of the dust heat recovery device of the embodiments of the utility model is shown in the figure. Figure 1 As shown, the dust heat recovery device of the utility model, comprising: a dust removal system, the dust removal system contains a multi-stage dust collector 11;Air flow conveying system, the air flow conveying system contains the air inlet channel 21 connected with the dust removal gas inlet of each stage dust collector 11 and the exhaust channel 22 connected with the dust removal gas exhaust port of each stage dust collector 11, the exhaust channel 22 of any stage dust collector 11 is connected with the air inlet channel 21 of the next stage dust collector 11, the air flow conveying system further contains air flow driving device 23;Dust conveying system, the dust conveying system contains the ash discharge channel 31 connected with the ash discharge port of each stage dust collector 11 and the ash distribution channel 32 connected with the air inlet channel 21 of each stage dust collector 11, the ash distribution channel 32 of any stage dust collector 11 is connected with the ash discharge channel 31 of the next stage dust collector, and the ash distribution channel 32 of the last stage dust collector 11 is connected with the dust supply source.
[0021] Among them, the dust supply source stores and supplies the dust recovered from the industrial kiln smelting flue gas to the ash distribution channel 32 of the last stage dust collector 11. The dust supply source supplies dust to the ash distribution channel of the last stage dust collector through the pneumatic ash conveying device. Each stage dust collector 11 uses a cyclone dust collector or a filter core type dust collector. The exhaust channel 22 of any stage dust collector 11 is connected with the air inlet channel 21 of the next stage dust collector 11 through the corresponding air flow driving device 23 (specifically a fan). In addition, any stage dust collector 11 is arranged below its next stage dust collector 11.
[0022] When the dust heat recovery device of the present invention is working, the high-temperature dust is transported to the dust distribution channel 32 of the last-stage dust collector 11, mixed with the airflow in the air inlet channel 21 of the last-stage dust collector 11, and then enters the last-stage dust collector 11 for gas-solid separation. The hot airflow carries the heat of the dust and is discharged from the exhaust channel 22 of the last-stage dust collector 11 (heat recovery is subsequently performed), and the cooled dust (medium and high-temperature dust) is discharged from the dust outlet of the last-stage dust collector; these dusts are then mixed with the airflow in the air inlet channel 21 of the previous-stage dust collector 11, and a similar process to the above is repeated. As a result, the dust is cooled step by step from the last-stage dust collector to the first-stage dust collector, while the airflow is heated step by step from the first-stage dust collector to the last-stage dust collector, thereby effectively extracting the heat of the dust.
[0023] The above describes the relevant contents of the present invention. Based on these descriptions, a person skilled in the art will be able to implement the present invention. Based on the above contents of this specification, all other embodiments obtained by a person skilled in the art without inventive work should fall within the scope of patent protection.
Claims
1. Dust heat recovery device, characterized by: include: A dust removal system, wherein the dust removal system includes a multi-stage dust collector; an air flow conveying system, wherein the air flow conveying system includes an air intake channel connected to the air inlet of the to-be-dust-removed gas of each stage of the dust collector and an exhaust channel connected to the exhaust port of the dust-removed gas of each stage of the dust collector, the exhaust channel of any stage of the dust collector is connected to the air intake channel of the next stage of the dust collector, and the air flow conveying system further includes an air flow driving device; and a dust conveying system, wherein the dust conveying system includes an ash discharge channel connected to the ash discharge port of each stage of the dust collector and an ash distribution channel connected to the air intake channel of each stage of the dust collector, the ash distribution channel of any stage of the dust collector is connected to the ash discharge channel of the next stage of the dust collector, and the ash distribution channel of the last stage of the dust collector is connected to a dust supply source.
2. The dust heat recovery device according to claim 1, characterized in that: The dust supply source stores and supplies dust recovered from the smelting flue gas of the industrial furnace to the dust distribution channel of the last-stage dust collector.
3. The dust heat recovery device according to claim 1, characterized in that: Each level of dust collector adopts cyclone dust collector or filter element dust collector.
4. The dust heat recovery device according to claim 1, characterized in that: The exhaust passage of any one-stage dust collector is connected to the air inlet passage of the next-stage dust collector through a corresponding airflow driving device.
5. The dust heat recovery device according to claim 1, characterized in that: The exhaust passage of any one-stage dust collector is connected to the air inlet passage of the next-stage dust collector through a corresponding fan.
6. The dust heat recovery device according to claim 1, characterized in that: The dust supply source supplies dust to the dust distribution channel of the last-stage dust collector through the pneumatic dust conveying device.
7. The dust heat recovery device according to claim 1, characterized in that: Any one-stage dust collector is arranged below the next-stage dust collector.