Self-dust-removing vertical briquette drying furnace

Abstract

The present invention relates to the field of dryers, in particular to a self-dusting type coal vertical drying furnace, which comprises a furnace body and a dust removal top cover. A cloth trolley is arranged on the dust removal top cover. The dust removal top cover is arranged above the furnace body. The gap between the dust removal top cover and the upper part of the drying bin forms an exhaust gas chamber. The dust removal top cover is composed of a clean gas chamber, a dust collection chamber, a dust collection pipe and a dust removal fan. The dust collection chamber is arranged on the side wall of the exhaust gas chamber. A first air inlet hole is arranged on the side wall of the exhaust gas chamber. A plurality of rows of cloth bags are arranged inside the dust collection chamber. A guide plate is arranged on one side of the cloth bag close to the first air inlet hole. The dust collection pipe is arranged on the top of the exhaust gas chamber. A second air inlet hole is arranged on the dust collection pipe. The dust collection pipe is connected with the dust collection chamber through a connecting pipe. The discharge port is connected with the dust collection chamber through a lower dust removal pipeline. A dust discharge port is arranged at the bottom of the dust collection chamber. The present invention solves the problem of large floor area of the original dust removal device, reduces the laying of pipelines, and lowers the production cost.

Description

Technical Field

[0001] The present invention relates to the field of dryers, and in particular to a self-dust-removing briquette vertical drying furnace. Background Art

[0002] As a kind of clean coal production technology, briquette production has the advantages of simple operation, mature technology, low cost, obvious energy saving and efficiency increase, and reduced waste gas emissions, etc., which is worthy of our vigorous development. And in the process of briquette production, briquette drying is one of the most critical processes. The traditional dust removal method is to externally connect a dust collector to the dryer, usually using water dust removal or bag dust collector. However, since the dust collector is externally connected to the dryer, a large number of pipelines are required to connect between the dust collector and the dryer, and the dust collector occupies a large area. In order to overcome the wind pressure loss of the connecting pipelines, a high-power fan motor is required for the externally connected dust collector. Summary of the Invention

[0003] To solve the above technical problems, the present invention proposes a self-dust-removing briquette vertical drying furnace that integrates drying and dust removal, which is both power-saving and space-saving.

[0004] The present invention adopts the following technical solutions:

[0005] A self-dust-removing briquette vertical drying furnace, comprising a furnace body and a dust-removing top cover. A cloth trolley is arranged on the dust-removing top cover. The dust-removing top cover is arranged above the furnace body. The gap between the dust-removing top cover and the upper part of the drying bin forms a tail gas chamber. The dust-removing top cover is composed of a clean gas chamber, a dust collection chamber, a dust collection pipe and a dust removal fan. The dust collection chamber is arranged on the side wall of the tail gas chamber. A first air inlet hole is arranged on the side wall of the tail gas chamber. Multiple rows of cloth bags are arranged inside the dust collection chamber. A flow guide plate is arranged on one side of the cloth bag close to the first air inlet hole; the dust collection pipe is arranged on the top of the tail gas chamber. A second air inlet hole is arranged on the dust collection pipe. The dust collection pipe is connected to the dust collection chamber through a connecting pipe. The discharge port is connected to the dust collection chamber through a lower dust removal pipeline; a dust discharge port is arranged at the bottom of the dust collection chamber.

[0006] Compared with the prior art, the beneficial effects of the present invention are:

[0007] The present invention directly integrates dust removal and drying, reduces the disadvantage of large floor area caused by the separate setting of the drying furnace and the dust removal equipment, avoids the wind pressure loss caused by the connecting pipelines, reduces the power of the dust removal fan, and saves electric energy.

[0008] Furthermore, the preferred solution adopted by the present invention is:

[0009] A clean gas chamber is arranged above the cloth bag, and the dust removal fan and the inspection hole are arranged above the clean gas chamber.

[0010] A cloth bag skeleton is arranged inside the cloth bag, and the cloth bag is fixed inside the dust collection chamber through an orifice plate.

[0011] The dust collection pipe is a tubular structure with an elliptical end face. The left and right sides of the dust collection pipe are respectively connected to the left and right dust collection chambers through connecting pipes, and the lower end of the dust collection pipe wall is evenly provided with second air inlet holes.

[0012] The bottom end of the flow guide plate is set lower than the bottom end of the cloth bag, and the bottom of the flow guide plate is inclined towards the cloth bag.

[0013] A pressure gas storage tank is arranged outside the dust collection chamber. A blowing pipe is arranged on the pressure gas storage tank. Blowing holes are arranged on the blowing pipe, and the blowing holes are arranged facing the center of the cloth bag mouth. A pulse solenoid valve is arranged on the blowing pipe.

[0014] The dust removal top cover is provided with a left dust collection chamber and a right dust collection chamber, and the left dust collection chamber and the right dust collection chamber are symmetrically arranged with respect to the furnace body; a maintenance hole is arranged at the top of the dust removal top cover, and the maintenance hole is arranged at an interval from the dust removal fan.

[0015] The dust collection chamber is connected by a plurality of small dust collection chambers with a funnel structure, and the adjacent dust collection chambers are communicated with each other.

[0016] A dust discharge valve is arranged on the dust discharge port. Brief Description of the Drawings

[0017] Figure 1 is a schematic structural diagram of the present invention;

[0018] Figure 2 is Figure 1 a side view of;

[0019] Figure 3 is Figure 1 a top view of;

[0020] Figure 4 is a schematic structural diagram of the dust removal top cover;

[0021] Figure 5 is Figure 2 an enlarged view of part A of;

[0022] Figure 6 is Figure 2 an enlarged view of part B of;

[0023] Figure 7 is Figure 4 an enlarged view of part C of;

[0024] In the figure: furnace body 1; hot air bin 101; drying bin 102; hot air bin inlet 103; dust removal top cover 2; pressure gas storage tank 3; lower dust removal pipeline 4; cloth trolley 5; dust collection chamber 6; clean air chamber 7; dust collection pipe 8; cloth bag 9; ash discharge port 10; ash discharge valve 1001; dust removal fan 11; connecting pipe 12; injection pipe 13; injection hole 1301; guide plate 14; discharge port 15; hot air passage 16; inspection hole 17; first air inlet hole 18; pulse solenoid valve 19; orifice plate 20; second air inlet hole 21; tail gas chamber 22. Specific embodiments

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0026] Referring to the accompanying drawings: A self-dust-removing briquette vertical drying furnace is composed of a furnace body 1 and a dust removal top cover 2. A cloth trolley 5 is welded on the dust removal top cover 2. The dust removal top cover 2 is arranged above the furnace body 1. A tail gas chamber 22 is formed between the dust removal top cover 2 and the drying bin 102. First air inlet holes 18 are respectively arranged on the left and right side walls of the tail gas chamber 22. The tail gas generated during the drying process enters the tail gas chamber 22 from the drying bin 102. The discharge port 15 at the bottom of the furnace body 1 is connected to the dust collection chamber 6 through the lower dust removal pipeline 4.

[0027] The dust removal top cover 2 is composed of a dust collection chamber 6, a clean air chamber 7, a dust collection pipe 8 and a dust removal fan 11. The dust collection chamber 6 is composed of a plurality of small dust collection chambers with a funnel structure connected, and the adjacent small dust collection chambers are communicated. Ash discharge ports 10 are respectively arranged below each small dust collection chamber. The ash discharge ports 10 are controlled by ash discharge valves 1001. A plurality of rows of cloth bags 9 are evenly arranged inside the dust collection chamber 6. The cloth bags 9 are fixed in the dust collection chamber 6 through an orifice plate 20. Fixed gaps are arranged between the cloth bags 9. A cloth bag skeleton is arranged inside the cloth bags 9. The cloth bag skeleton is used to support the cloth bags 9 to prevent the cloth bags 9 from swinging with the airflow. A guide plate 14 is arranged at a position of the dust collection chamber 6 close to the first air inlet hole 18. The guide plate 14 is placed between the side wall of the tail gas chamber 22 and the innermost cloth bag 9. The bottom end of the guide plate 14 is lower than the bottom end of the cloth bag 9, and the lower end of the guide plate 14 is inclined towards the cloth bag 9. The guide plate 14 guides the tail gas entering the dust collection chamber 6 to prevent the airflow from preferentially entering the cloth bag 9 closest to the first air inlet hole 18 after entering the dust collection chamber 6, so that the tail gas entering the dust collection chamber 6 from the side enters from below the cloth bag 9. In this embodiment, a left dust collection chamber and a right dust collection chamber are respectively arranged, and the left dust collection chamber and the right dust collection chamber are symmetrically arranged on the left and right sides of the furnace body 1 (as Figure 2 shown). After the tail gas enters the tail gas chamber 22, the tail gas close to the left and right sides of the tail gas chamber 22 respectively enters the left dust collection chamber and the right dust collection chamber.

[0028] A clean air chamber 7 is arranged above the dust collecting chamber 6, and a dust removal fan 11 and an inspection hole 17 are arranged on the top of the clean air chamber 7. The dust removal fan 11 and the inspection hole 17 are arranged at intervals. When the dust collecting chamber 6 needs to be repaired or the bag 9 needs to be replaced, the operator directly opens the inspection hole 17 to enter the clean air chamber 7 for maintenance or replacement of the bag 9.

[0029] The dust collecting pipe 8 is arranged at the top of the tail gas chamber 22 and is placed below the material distribution trolley 5. The dust collecting chamber 6 is placed at the center of the tail gas chamber 22 and is arranged horizontally along the furnace body 1 (such as Figure 1 and Figure 2 As shown, the dust collecting pipe 8 is a tubular structure with an elliptical end face. The left and right sides of the dust collecting pipe 8 are respectively connected to the left and right dust collecting chambers 6 through connecting pipes 12. The lower end of the dust collecting pipe 8 is evenly provided with second air inlet holes 21 (as shown in FIG. Figure 6 As shown in FIG. 1 ), the second air inlet 21 faces the tail gas chamber 22.

[0030] See attached Figure 5 A pressure gas storage tank 3 is provided outside each dust collecting chamber 6. Compressed gas is stored in the pressure gas storage tank 3 for a long time. The pressure gas storage tank 3 is externally connected to a compressor. The pressure gas storage tank 3 is connected to the blowing pipe 13 through a pulse solenoid valve 19. The blowing pipe 13 is provided with a blowing hole 1301 on the upper side of the center of the bag opening of the cloth bag 9. When the pulse solenoid valve 19 is opened, the gas in the pressure gas storage tank 3 is sprayed to the cloth bag 9 through the blowing hole 1301, so that the cloth bag 9 expands instantly, and the dust on the cloth bag 9 falls off from the cloth bag 9.

[0031] See attached Figure 1 In this embodiment, the gap between the hot air bins 101 and the hot air bins 101 constitutes a drying bin 102. Ventilation holes are provided on both side walls of the hot air bin 101. The hot air passes through the hot air duct and the hot air bin 101 in turn and enters the drying bin 102 to exchange heat with the wet coal. A part of the exhaust gas generated during the heat exchange process goes up into the exhaust chamber 22, and the other part of the exhaust gas enters the discharge port 15 with the coal during unloading, and then enters the dust collecting chamber 6 through the lower dust removal pipe 4.

[0032] The present invention integrates the dust removal device with the drying furnace, reduces the disadvantage of the drying furnace and the dust removal equipment occupying a large area due to the separate arrangement, avoids the wind pressure loss caused by laying pipelines, improves the drying efficiency, reduces the power of the dust removal fan, and reduces the power consumption.

[0033] The above are only specific embodiments of the present invention, but the protection of the present invention is not limited to this. All equivalent changes or replacements of the present invention that can be thought of by technicians in this technical field and the technical features of the technical solution are covered within the protection scope of the present invention.

Claims

1. A self-dusting coal briquette vertical drying furnace, comprising a furnace body and a dust removal top cover, on which a material distribution trolley is arranged. Features: The dust collecting hood is arranged above the furnace body, and the gap between the dust collecting hood and the top of the drying bin constitutes the tail gas chamber. The dust collecting hood is composed of a clean air chamber, a dust collecting chamber, a dust collecting pipe and a dust removing fan. The dust collecting chamber is arranged on the side wall of the tail gas chamber, and a first air inlet hole is arranged on the side wall of the tail gas chamber. Multiple rows of bags are arranged inside the dust collecting chamber, and a guide plate is arranged on the side of the bag close to the first air inlet hole; the dust collecting pipe is arranged on the top of the tail gas chamber, and a second air inlet hole is arranged on the dust collecting pipe. The dust collecting pipe is connected to the dust collecting chamber through a connecting pipe, and the discharge port is connected to the dust collecting chamber through a lower dust removal pipe; an ash discharge port is arranged at the bottom of the dust collecting chamber; The dust collecting top cover is provided with a left dust collecting chamber and a right dust collecting chamber, and the left dust collecting chamber and the right dust collecting chamber are symmetrically arranged with respect to the furnace body; a maintenance hole is arranged on the top of the dust collecting top cover, and the maintenance hole is arranged at intervals from the dust collecting fan; The dust collecting pipe is a tubular structure with an elliptical end face. The left and right sides of the dust collecting pipe are respectively connected to the left and right dust collecting chambers through connecting pipes. The lower end of the dust collecting pipe wall is evenly provided with second air inlet holes.

2. The self-dusting coal briquette vertical drying furnace according to claim 1, Features: The clean air chamber is arranged above the bag, and the dust removal fan and the inspection hole are arranged above the clean air chamber.

3. The self-dusting coal briquette vertical drying furnace according to claim 1, Features: A cloth bag frame is arranged inside the cloth bag, and the cloth bag is fixed inside the dust collecting chamber through a perforated plate.

4. The self-dusting coal briquette vertical drying furnace according to claim 1, Features: The bottom end of the guide plate is arranged lower than the bottom end of the cloth bag, and the bottom of the guide plate is inclined toward the cloth bag.

5. The self-dusting coal briquette vertical drying furnace according to claim 1, Features: A pressure gas storage tank is arranged outside the dust collecting chamber, a blowing pipe is arranged on the pressure gas storage tank, a blowing hole is arranged on the blowing pipe, the blowing hole is arranged right at the center of the bag mouth, and a pulse electromagnetic valve is arranged on the blowing pipe.

6. The self-dusting coal briquette vertical drying furnace according to claim 1, Features: The dust collecting chamber is connected by a plurality of small dust collecting chambers with funnel structures, and adjacent dust collecting chambers are connected.

7. The self-dusting coal briquette vertical drying furnace according to claim 1, Features: An ash discharge valve is provided on the ash discharge port.

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