Airflow crushing heat recovery device

Abstract

The utility model provides an airflow crushing heat recovery device which comprises a vertical crushing barrel, a heat recovery device and a heat recovery device. A first high-pressure air nozzle is arranged at the bottom of the crushing barrel and is vertically arranged upwards; at least one second high-pressure air nozzle is horizontally arranged on the side of the bottom of the crushing barrel, and the spraying direction of the second high-pressure air nozzle is spatially intersected with the spraying direction of the first high-pressure air nozzle; a first high-temperature granule inlet is also formed in the crushing barrel above the second high-pressure air nozzle, is inclined downwards and points to an intersection point of the spraying direction of the first high-pressure air nozzle and the spraying direction of the second high-pressure air nozzle. According to the utility model, the first high-pressure air nozzle and the second high-pressure air nozzle are vertically intersected and collided to impact and crush high-temperature aggregates which are dived down, so that a good crushing effect can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of high-temperature solid particle heat recovery technology, and in particular to an airflow crushing heat recovery device. Background Technology

[0002] The combustion products of calcining furnaces are granular in structure and typically at high temperatures. If these high-temperature granules are allowed to cool naturally, the stored heat energy will be wasted. If the heat energy in the granules is recovered, and heat exchange is only conducted directly between the air and the granules, the limited surface area of ​​the granules means that the internal heat cannot be exchanged with the gas in a timely manner, resulting in slow thermal conductivity and failing to meet the requirements for rapid heat exchange.

[0003] Some conventional particle crushing equipment, such as ultrasonic equipment, is energy-intensive and has higher requirements for equipment operating in high-temperature environments (usually 800-1200℃), making it impossible for ultrasonic crushing equipment to effectively recover heat energy from high-temperature particles. On the other hand, conventional screening equipment can only screen particles according to their size, which is difficult to achieve a crushing effect and therefore cannot increase the surface area of ​​the particles. Summary of the Invention

[0004] The technical problem to be solved by this utility model embodiment is to provide an airflow crushing heat recovery device to solve the problem that conventional equipment cannot crush high-temperature particles.

[0005] To address the aforementioned technical problems, this utility model provides an airflow crushing heat recovery device, comprising: a vertical crushing cylinder with a blind end at the bottom and a particle outlet at the top; a first high-pressure air nozzle at the bottom of the crushing cylinder, the first high-pressure air nozzle being arranged vertically upwards; at least one second high-pressure air nozzle on the side of the bottom of the crushing cylinder, the second high-pressure air nozzle being arranged horizontally, and the ejection direction of the second high-pressure air nozzle intersecting the ejection direction of the first high-pressure air nozzle in space; and a first high-temperature particle inlet on the crushing cylinder above the second high-pressure air nozzle, the first high-temperature particle inlet being inclined downwards and pointing towards the intersection of the ejection directions of the first and second high-pressure air nozzles.

[0006] A slag discharge port is also provided at the bottom of the crushing cylinder on the side of the first high-pressure air nozzle.

[0007] The top of the crushing cylinder is provided with an airflow lifting cylinder, which is arranged vertically or inclined upwards, and the cross-sectional dimension of the airflow lifting cylinder is larger than the cross-sectional dimension of the crushing cylinder.

[0008] A cold air inlet is also provided on the side of the airflow lifting cylinder, and the cold air inlet blows horizontally into the airflow lifting cylinder.

[0009] A second high-temperature granular material inlet is also provided on the side of the airflow lifting cylinder, and the second high-temperature granular material inlet is located above the cold air inlet.

[0010] The particle size of the second high-temperature particle inlet is smaller than that of the first high-temperature particle inlet.

[0011] The second high-temperature granule inlet is arranged at an angle downwards.

[0012] The length of the airflow lifting cylinder is greater than the length of the crushing cylinder.

[0013] The airflow crushing and heat recovery device provided by this utility model uses the perpendicular intersection of a first high-pressure air nozzle and a second high-pressure air nozzle to impact and crush the high-temperature particles that are rushing down, which can achieve a good crushing effect. After crushing, the high-temperature particles further exchange heat with cold air, forming a mixed flow of particles, high-pressure air and cold air. Then, they are further impacted and collided with the small-diameter high-temperature particles that are rushing down, thereby further crushing the high-temperature particles and achieving a good crushing effect. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the airflow crushing and heat recovery device of this utility model.

[0015] 1- Crushing cylinder; 2- First high-pressure air nozzle; 3- Second high-pressure air nozzle; 4- First high-temperature particle inlet; 5- Slag discharge port; 6- Airflow lifting cylinder; 7- Cold air inlet; 8- Second high-temperature particle inlet. Detailed Implementation

[0016] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0017] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0018] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0019] like Figure 1 As shown, this utility model provides an airflow crushing heat recovery device, including: a vertical crushing cylinder 1, the bottom of the crushing cylinder 1 being a blind end and the top being a particle outlet; a first high-pressure air nozzle 2 is provided at the bottom of the crushing cylinder 1, the first high-pressure air nozzle 2 being arranged vertically upward; at least one second high-pressure air nozzle 3 is provided on the side of the bottom of the crushing cylinder 1, the second high-pressure air nozzle 3 being arranged horizontally, and the ejection direction of the second high-pressure air nozzle 3 intersecting the ejection direction of the first high-pressure air nozzle 2 in space; a first high-temperature particle inlet 4 is also provided on the crushing cylinder 1 above the second high-pressure air nozzle 3, the first high-temperature particle inlet 4 being inclined downward and pointing to the intersection of the ejection direction of the first high-pressure air nozzle 2 and the ejection direction of the second high-pressure air nozzle 3.

[0020] A slag discharge port 5 is also provided at the bottom of the crushing cylinder 1 on the side of the first high-pressure air nozzle 2.

[0021] The top of the crushing cylinder 1 is provided with an airflow lifting cylinder 6, which is arranged vertically or inclined upwards, and the cross-sectional dimension of the airflow lifting cylinder 6 is larger than the cross-sectional dimension of the crushing cylinder 1.

[0022] A cold air inlet 7 is also provided on the side of the airflow lifting cylinder 6, and the cold air inlet blows horizontally into the airflow lifting cylinder 6.

[0023] A second high-temperature granular material inlet 8 is also provided on the side of the airflow lifting cylinder 6, and the second high-temperature granular material inlet 8 is located above the cold air inlet 7.

[0024] The particle size of the second high-temperature particle inlet 8 is smaller than that of the first high-temperature particle inlet 4.

[0025] The second high-temperature granular material inlet 8 is arranged at an angle downwards.

[0026] The length of the airflow lifting cylinder 6 is greater than the length of the crushing cylinder 1.

[0027] The airflow crushing and heat recovery device provided by this utility model uses the perpendicular intersection of a first high-pressure air nozzle and a second high-pressure air nozzle to impact and crush the high-temperature particles that are rushing down, which can achieve a good crushing effect. After crushing, the high-temperature particles further exchange heat with cold air, forming a mixed flow of particles, high-pressure air and cold air. Then, they are further impacted and collided with the small-diameter high-temperature particles that are rushing down, thereby further crushing the high-temperature particles and achieving a good crushing effect.

[0028] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A gas stream fragmentation heat recovery apparatus, characterised in that, The application relates to a vertical crushing cylinder, the bottom of the crushing cylinder being a blind end and the top being a particle outlet; a first high-pressure air nozzle is arranged at the bottom of the crushing cylinder and vertically upwards; at least one second high-pressure air nozzle is arranged at the side of the bottom of the crushing cylinder, the second high-pressure air nozzle being horizontally arranged, and the jet direction of the second high-pressure air nozzle intersects with the jet direction of the first high-pressure air nozzle in space; a first high-temperature particle inlet is further arranged on the crushing cylinder above the second high-pressure air nozzle, the first high-temperature particle inlet being obliquely downwards and pointing to the intersection of the jet directions of the first high-pressure air nozzle and the second high-pressure air nozzle. A slag discharge port is further arranged at the bottom of the crushing cylinder at the side of the first high-pressure air nozzle. The top of the crushing cylinder is provided with an airflow lifting cylinder, the airflow lifting cylinder being vertically or obliquely upwards arranged, and the cross-sectional dimension of the airflow lifting cylinder is greater than that of the crushing cylinder.

2. The flow-break heat recovery device of claim 1, wherein, A cold air inlet is further arranged at the side of the airflow lifting cylinder, the cold air inlet horizontally blowing into the airflow lifting cylinder.

3. The flow-break heat recovery device of claim 1, wherein, A second high-temperature particle inlet is further arranged at the side of the airflow lifting cylinder, the second high-temperature particle inlet being above the cold air inlet.

4. The flow-break heat recovery device of claim 3, wherein, The particle size of the second high-temperature particle inlet is smaller than that of the first high-temperature particle inlet.

5. The flow-break heat recovery device of claim 4, wherein, The direction of the second high-temperature particle inlet is obliquely downwards arranged.

6. The flow-break heat recovery device of claim 5, wherein, The length of the airflow lifting cylinder is greater than that of the crushing cylinder.

7. The flow-break heat recovery device of claim 6, wherein, ​ 8. The flow-break heat recovery device of claim 3, wherein, ​

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