Dry multi-return flue gas quenching system

Abstract

The utility model relates to incineration (cremation) equipment dust removal technical field especially, relate to a dry -type multi -back stroke flue gas quenching system. The utility model adopts the technical scheme: including main body cooling support, the upper and lower sides of main body cooling support are through being equipped with upper box body and lower box body respectively, the inside of upper box body and lower box body is all sealed space, the right side area of main body cooling support between upper box body and lower box body is linked through first quenching delivery pipe and second quenching delivery pipe respectively, the inside of lower box body is equipped with separation baffle, first quenching delivery pipe is located the left side area of separation baffle, second quenching delivery pipe is located the right side area of separation baffle. The utility model has the advantages that: adopt dry -type cooling mode, through the shunt delivery cooperation of multiple groups of circuitous flue gas delivery channel, then through the overall accelerated cooling of external cooling fan, can effectively avoid the problem that the existing water spraying mode is easy to cause the sticking of cloth bag and secondary pollution.

Description

Technical Field

[0001] This utility model relates to the field of dust removal technology for incineration (cremation) equipment, and in particular to a dry multi-pass flue gas quenching system. Background Technology

[0002] With the increasing emphasis on environmental protection by the state, flue gas dust removal and purification systems are widely used in the incineration (cremation) equipment industry, and are used in conjunction with cremation machines, playing a crucial role in purifying flue gas emissions and treating harmful gases. The working principle of the dust collector is to use bag filters to block dust on the outside of the bags. Clean flue gas enters the bags and, under the suction of the induced draft fan, proceeds to the next process and is discharged into the air. However, the temperature of the flue gas exiting the cremation machine furnace is around 800 degrees Celsius. If it directly enters the bag filter, the bags will be scorched or burned, rendering the bag filter ineffective and severely affecting the normal operation of the cremation process. To reduce the temperature of the flue gas to below 220 degrees Celsius before entering the bag filter, the common practice is to use water spraying. Water spray guns are installed on the spray tower, and under the action of a high-pressure air source, the water is fully atomized and mixed with the flue gas, lowering the flue gas temperature to a level that the bags can withstand. However, this technology has several drawbacks. First, when the water spray gun cools the flue gas by atomizing water, it significantly increases the moisture content of the gas. This moisture adheres to dust and sticks to the filter bags. Even with the powerful high-pressure cleaning system, removing this damp dust from the bags is extremely difficult. Over time, the dust accumulation on the filter bags increases until they lose their filtering capacity. Second, while the water spray gun normally operates as a mist, after a period of use, the nozzles degrade. Combined with corrosion and carbon buildup from the flue gas, this results in a linear water jet. This water doesn't fully dissolve in the flue gas; instead, it accumulates and flows into the flue gas ducts, eventually seeping into the workshop floor through gaps, causing secondary pollution. Utility Model Content

[0003] The purpose of this invention is to provide a dry multi-pass flue gas quenching system. It adopts a dry cooling method, using multiple sets of detour flue gas conveying channels for diversion and coordination, and then using an external cooling fan for overall accelerated cooling. This effectively avoids the problems of bag clogging and secondary pollution that are easily caused by existing water spraying methods, effectively improving the working efficiency of bag filters, and providing better protection for the surrounding environment. The overall structure is also more convenient to install and use, with higher space utilization. It can be installed at multiple locations in the existing flue gas conveying process as needed, providing greater flexibility in use.

[0004] The technical solution of this utility model is as follows:

[0005] A dry multi-pass flue gas quenching system, characterized in that: it includes a main cooling support, with an upper box and a lower box respectively on its upper and lower sides. The interiors of the upper and lower boxes are sealed spaces. The upper and lower boxes are connected to each other on the right side of the main cooling support via a first quenching delivery pipe and a second quenching delivery pipe. The lower box has a separation baffle inside. The first quenching delivery pipe is located on the left side of the separation baffle, and the second quenching delivery pipe is located on the right side of the separation baffle. Both the first and second quenching delivery pipes are composed of multiple parallel and evenly distributed cooling pipes. Inclined guide plates are provided inside the upper and lower boxes. Flue gas inlets and outlets are provided on the left and right sides of the lower box, respectively. Evenly distributed integral mounting plates are provided on the lower box. Two inclined fan mounting surfaces are provided on the left side of the main cooling support, and a main cooling fan is mounted on the fan mounting surfaces, with the main cooling fan fitted to the fan mounting surfaces.

[0006] Furthermore, the upper housing and the lower housing are connected to the main cooling bracket by welding.

[0007] Furthermore, the first quenching conveying pipe and the second quenching conveying pipe are manufactured from seamless stainless steel pipes.

[0008] Furthermore, the projection of the upper housing in the vertical direction is located within the area of ​​the projection of the lower housing in the vertical direction.

[0009] The beneficial effects of this utility model are:

[0010] This invention employs a dry cooling method, utilizing multiple sets of meandering flue gas conveying channels for diversion and coordination, and then employing an external cooling fan for overall accelerated cooling. This effectively avoids the problems of bag clogging and secondary pollution that are easily caused by existing water spraying methods, effectively improving the working efficiency of the bag filter, resulting in better environmental protection. The overall structure is also more convenient to install and use, with higher space utilization, and can be installed at multiple locations in the existing flue gas conveying process as needed, providing greater flexibility in use. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] In the diagram: 1. Main cooling bracket, 2. Lower housing, 3. Upper housing, 4. First rapid cooling conveying pipe, 5. Second rapid cooling conveying pipe, 6. Main cooling fan, 7. Flue gas inlet, 8. Flue gas outlet, 9. Overall mounting plate, 10. Separation baffle. Detailed Implementation

[0013] like Figure 1 As shown, a dry multi-pass flue gas quenching system includes a main cooling support 1. The main cooling support 1 has an upper chamber 3 and a lower chamber 2 on its upper and lower sides, respectively. Both the upper chamber 3 and the lower chamber 2 are sealed spaces. The upper chamber 3 and the lower chamber 2 are connected to each other on the right side of the main cooling support 1 via a first quenching conveying pipe 4 and a second quenching conveying pipe 5, allowing communication between the two chambers. The lower chamber 2 has a separation baffle 10 inside. The first quenching conveying pipe 4 is located on the left side of the separation baffle 10, and the second quenching conveying pipe 5 is located on the right side, creating two internal regions. Both the first quenching conveying pipe 4 and the second quenching conveying pipe 5 are composed of multiple parallel and evenly distributed cooling pipes, which create a zigzag flow of flue gas during use, resulting in higher cooling efficiency. The upper chamber 3 and the lower chamber 2 have inclined guide plates inside, improving the smoothness of flue gas transport between the chambers and the conveying pipes. The lower housing 2 has flue gas inlets 7 and flue gas outlets 8 on its left and right sides, respectively, which are connected to the input and output pipes for use. The lower housing 2 has evenly distributed integral mounting plates 9 for overall installation and fixation. The left side of the main cooling bracket 1 has two inclined fan mounting surfaces facing upwards to the left. The main cooling fan 6 is mounted on these inclined surfaces, creating an upward-sloping structure that provides some dust protection during use. The air outlet of the inner fan creates an upward blowing effect, resulting in smoother airflow and higher cooling efficiency. In operation, the flue gas is first conveyed to the flue gas inlet 7. Through the action of the separating baffle 10, the flue gas is diverted from the first rapid cooling conveying pipe 4 and conveyed into the upper chamber 3. Then, the upper chamber 3, in conjunction with the second rapid cooling conveying pipe 5, performs reverse diversion conveying. Finally, the rapidly cooled flue gas is output through the flue gas outlet 8 of the lower chamber. During the conveying process, two sets of main cooling fans 6 provide external air cooling to the reciprocating flue gas ducts, achieving efficient cooling. This system adopts a dry cooling method, using multiple sets of meandering flue gas conveying channels for diversion and conveying, and external cooling fans for overall accelerated cooling. This effectively avoids the problems of bag filter clogging and secondary pollution that are easily caused by existing water spraying methods, effectively improving the working efficiency of the bag filter, resulting in better environmental protection. The overall structure is also convenient to install and use, with higher space utilization, allowing it to be installed at multiple locations in the existing flue gas conveying process as needed, providing greater flexibility in use.

[0014] Preferably, the upper housing 3 and the lower housing 2 are connected to the main cooling bracket 1 by welding, which improves the overall structural support strength, extends the service life, enhances durability and reliability, and effectively improves safety.

[0015] Preferably, the first quenching conveying pipe 4 and the second quenching conveying pipe 5 are made of stainless steel seamless pipes, which have better sealing stability and better cooling effect during use.

[0016] Preferably, the projection of the upper housing 3 in the vertical direction is located within the area of ​​the projection of the lower housing 2 in the vertical direction, which makes the overall structure occupy less space and more reliable in terms of safety during use.

[0017] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements or substitutions can be made without departing from the principle of this utility model, and these improvements or substitutions should also be considered within the protection scope of this utility model.

Claims

1. A dry multi-pass flue gas quenching system, characterized in that: The system includes a main cooling support (1), with an upper housing (3) and a lower housing (2) on its upper and lower sides, respectively. The interiors of the upper housing (3) and the lower housing (2) are sealed spaces. The upper housing (3) and the lower housing (2) are connected to each other on the right side of the main cooling support (1) by a first rapid cooling conveying pipe (4) and a second rapid cooling conveying pipe (5), respectively. The lower housing (2) has a separation baffle (10) inside. The first rapid cooling conveying pipe (4) is located on the left side of the separation baffle (10), and the second rapid cooling conveying pipe (5) is located on the right side of the separation baffle (10). The first quenching conveying pipe (4) and the second quenching conveying pipe (5) are both composed of multiple cooling pipes that are parallel to each other and evenly distributed. The upper box (3) and the lower box (2) are provided with inclined guide plates. The left and right sides of the lower box (2) are respectively provided with flue gas inlet (7) and flue gas outlet (8). The lower box (2) is provided with evenly distributed integral mounting and fixing plates (9). The left side of the main cooling bracket (1) is provided with two inclined fan mounting and fitting slopes that are inclined to the upper left. The main cooling fan (6) is provided on the fan mounting and fitting slopes. The main cooling fan (6) is set in close contact with the fan mounting and fitting slopes.

2. The dry multi-pass flue gas quenching system according to claim 1, characterized in that: The upper housing (3) and the lower housing (2) are connected to the main cooling bracket (1) by welding.

3. The dry multi-pass flue gas quenching system according to claim 1, characterized in that: The first quenching conveying pipe (4) and the second quenching conveying pipe (5) are made of stainless steel seamless pipe.

4. The dry multi-pass flue gas quenching system according to claim 1, characterized in that: The projection of the upper box (3) in the vertical direction is located within the area of ​​the projection of the lower box (2) in the vertical direction.

Images