Kiln waste gas treatment system
By installing flame arrestor valves and bypass valves in the kiln exhaust gas treatment system, the alternating discharge of exhaust gas and the cooling treatment of the heat exchanger are realized, which solves the problem of kiln exhaust gas spontaneously combusting when power is cut off, ensuring the system is safe and accident-free.
Patent Information
- Application Number
- CN202520422443.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-12
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-12
AI Technical Summary
In the event of a power outage, the cooling water in the condenser of the existing kiln exhaust gas treatment system cannot circulate, resulting in the inability to cool the high-temperature exhaust gas. This can easily cause the activated carbon to spontaneously combust, posing a fire risk.
A kiln exhaust gas treatment system was designed, including an air inlet pipe, a heat exchanger, an activated carbon box, an exhaust pipe, and an outlet pipe. A flame arrestor valve and a bypass valve are installed. By controlling the alternating opening and closing of the flame arrestor valve and the bypass valve, exhaust gas can be discharged through different paths, preventing high-temperature exhaust gas from directly entering the activated carbon box, and the heat exchanger is used for cooling treatment.
This effectively prevents the activated carbon from being ignited by high-temperature exhaust gas, thus preventing fire accidents and ensuring the safe operation of the system.
Smart Images
Figure CN223856186U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the waste gas treatment technical field, and specifically relates to a kiln waste gas treatment system. BACKGROUND
[0002] The kiln is a fire furnace for firing ceramic articles and sculptures, and is an essential facility in the forming of pottery. The high-temperature waste gas generated during the firing process of the kiln contains various harmful substances and cannot be directly discharged into the air. Therefore, an activated carbon tank is usually used to adsorb the harmful substances in the waste gas.
[0003] When the existing kiln exhaust gas treatment system encounters a power failure, the cooling water in the condenser cannot be circulated, and the kiln waste gas cannot be cooled in time. The high-temperature waste gas is prone to cause the activated carbon to spontaneously ignite, which causes losses to the safety production. UTILITY MODEL CONTENTS
[0004] To solve the above technical problems, the utility model adopts the technical scheme of:
[0005] A kiln waste gas treatment system, comprising an air inlet pipe, a heat exchanger, an activated carbon tank, an air outlet pipe and an air outlet pipe connected in sequence, wherein the air inlet pipe is connected to the kiln, a fire damper is provided between the heat exchanger and the activated carbon tank, a dust removal water tank is provided on one side of the air inlet pipe, one end of the dust removal water tank is connected to the air inlet pipe, the other end of the dust removal water tank is connected to the air outlet pipe, and a bypass valve is provided between the dust removal water tank and the air outlet pipe.
[0006] According to the further optimization of the above technical scheme, the heat exchanger comprises a water cavity, an air inlet cavity and an air outlet cavity, a plurality of ventilation pipes are arranged in the water cavity, the two ends of the ventilation pipes are connected to the air inlet cavity and the air outlet cavity respectively, a cooling water inlet and a cooling water outlet are arranged on the water cavity, and the cooling water inlet and the cooling water outlet are connected to a cooling water pool respectively.
[0007] Preferably, the ventilation pipes are 304 stainless steel pipes with a pipe diameter of 108 mm.
[0008] Preferably, the fire damper and the bypass valve are both two-position two-way electromagnetic valves, one of which is normally closed and the other is normally open, and the fire damper and the bypass valve are electrically connected.
[0009] Preferably, a three-way pipe is connected to the end of the air outlet pipe, the other two ends of the three-way pipe are connected to the air outlet pipe and the bypass pipe respectively, and the bypass valve is arranged between the bypass pipe and the dust removal water tank.
[0010] Preferably, the outer diameter of the heat exchanger is 0.8 m, and the length of the heat exchanger is 5 m.
[0011] Preferably, the activated carbon tank is two groups arranged side by side, and the two groups of activated carbon tanks are connected by an elbow pipe.
[0012] Preferably, the activated carbon box comprises a box door and a box body, one side of the box door is hingedly connected with the box body, and the other side of the box door is provided with a buckle.
[0013] Compared with the prior art, the present application has the advantages that:
[0014] The present application provides a kiln waste gas treatment system, which is provided with a bypass pipe, a bypass valve and a fire damper, the bypass valve and the fire damper are alternately opened or closed, high-temperature kiln waste gas is prevented from igniting activated carbon in the activated carbon box, and a fire accident is prevented from occurring. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 It is a device structure schematic view of the present application;
[0016] Figure 2 It is a device overhead structure schematic view of the present application;
[0017] Figure 3 It is a heat exchanger structure schematic view of the device of the present application;
[0018] Figure 4 It is a heat exchanger internal structure schematic view of the device of the present application;
[0019] Figure 5 It is an activated carbon box structure schematic view of the device of the present application.
[0020] In the figure: 1, air inlet pipe, 2, heat exchanger, 21, water cavity, 22, air inlet cavity, 23, air outlet cavity, 24, ventilation duct, 25, cooling water inlet, 26, cooling water outlet, 3, activated carbon box, 31, box door, 32, box body, 33, buckle, 4, air outlet pipe, 41, three-way pipe, 42, bypass pipe, 5, air outlet pipe, 6, fire damper, 7, dust removal water tank, 8, bypass valve. DETAILED DESCRIPTION
[0021] The present application will be further described in detail below in combination with the drawings, the following embodiments are only used to more clearly illustrate the technical scheme of the present application, obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments, all other embodiments obtained by the person skilled in the art without creative labor are within the protection scope of the present application.
[0022] For example, Figures 1-5The utility model provides a kiln waste gas treatment system, including the air inlet pipe 1, heat exchanger 2, activated carbon tank 3, exhaust pipe 4 and air outlet pipe 5 that are sequentially connected, and the air inlet pipe 1 air inlet end is connected with the kiln, and the heat exchanger 2 and activated carbon tank 3 are provided with fire damper 6 between, and one side of air inlet pipe 1 is provided with dust removal water tank 7, and one end of dust removal water tank 7 is connected with air inlet pipe 1, and the other end of dust removal water tank 7 is connected with air outlet pipe 5, and bypass valve 8 is arranged between dust removal water tank 7 and air outlet pipe 5, and fire damper 6 and bypass valve 8 are both two-position two-way solenoid valve, and one is normally closed, and the other is normally open, and fire damper 6 and bypass valve 8 are electrically connected, and the utility model discloses a kind of activated carbon, and temperature reaches about three hundred degrees, and it can be self-ignition, due to kiln air outlet temperature is too high, usually more than the self-ignition temperature of activated carbon, therefore, kiln waste gas cannot be directly treated by activated carbon tank, and it needs to add heat exchange equipment in front of activated carbon tank, for carrying out cooling treatment to kiln waste gas, usually using water cooling system. But due to power failure, it will lead to water cooling system unable to circulate, cannot carry out cooling treatment to kiln waste gas, and it will lead to activated carbon tank self-ignition. The utility model sets when power failure, by controlling fire damper 6 to close, while opening bypass valve 8, kiln waste gas is introduced into dust removal water tank 7, and is discharged through air outlet pipe 5, the utility model sets when there is no power failure, by controlling fire damper 6 to open, while closing bypass valve 8, kiln waste gas is introduced into heat exchanger 2, then sequentially through activated carbon tank 3, exhaust pipe 4 and air outlet pipe 5, and kiln waste gas is discharged through different discharge paths. The utility model discloses device by controlling the alternate opening or closing of fire damper 6 and bypass valve 8, fire damper 6 and bypass valve 8 adopt linkage control, avoid high-temperature kiln waste gas to ignite activated carbon in activated carbon tank, prevent fire accident.
[0023] As Figure 3 And Figure 4 As shown, the heat exchanger 2 includes water cavity 21, air inlet cavity 22 and air outlet cavity 23, a plurality of ventilation ducts 24 are arranged in the water cavity 21, the ventilation ducts 24 are connected with the air inlet cavity 22 and the air outlet cavity 23 at both ends respectively, and the water cavity 21 is provided with a cooling water inlet 25 and a cooling water outlet 26, and the cooling water inlet 25 and the cooling water outlet 26 are connected with a cooling water pool respectively. In the device embodiment of the utility model, the material of the heat exchanger 2 is 304 stainless steel, the inside is a wind pipe for connecting the kiln air outlet, and the outside is a water cooling system, which exchanges heat through the external water circulation system and can be used for heating, showering and other recycling in winter. The heat exchanger is used for heat exchange and cooling of the kiln waste gas to protect the activated carbon in the activated carbon filter box and avoid self-ignition caused by high furnace temperature.
[0024] The ventilation duct 24 is a 304 stainless steel pipe with a pipe diameter of 108 mm.
[0025] The end of the exhaust pipe 4 is connected with a tee pipe 41, the other two ends of the tee pipe 41 are connected with the air outlet pipe 5 and a bypass pipe 42 respectively, and the bypass valve 8 is arranged between the bypass pipe 42 and the dust removal water tank 7. In the device, the bypass pipe 42 is arranged to solve the problem of exhaust of high-temperature waste gas of the kiln when power failure occurs, and to protect the activated carbon in the activated carbon tank and avoid the activated carbon being ignited by high-temperature furnace gas.
[0026] The outer diameter of the heat exchanger 2 is 0.8 m, and the length of the heat exchanger 2 is 5 m.
[0027] As shown in Figure 2 and Figure 5 The two groups of activated carbon tanks 3 are arranged side by side and connected by a bend pipe. In the embodiment, the two groups of activated carbon tanks 3 are arranged vertically, and the heat exchanger 2 is arranged parallel to the exhaust pipe 4, so as to reduce the occupied space of the waste gas treatment system.
[0028] As shown in Figure 5 The activated carbon tank 3 comprises a tank door 31 and a tank body 32, the tank door 31 is hingedly connected with the tank body 32, and the other side of the tank door 31 is provided with a buckle 33, and the buckle 33 is connected with the tank body 32 in a lapping manner. In the embodiment, the activated carbon tank 3 is designed to be opened, so as to facilitate replacement of the activated carbon in the activated carbon tank 3. The tank door 31 and the tank body 32 are sealed by a sealing material, so as to prevent waste gas from overflowing from the connection between the tank door 31 and the tank body 32. In the embodiment, the tank door lock structure adopts a common buckle structure, which can facilitate opening of the tank door and can also enhance the micro-pressure between the tank door and the tank body, thereby increasing the sealing property between the tank door and the tank body.
[0029] Of course, the above-mentioned embodiments are not a limitation of the present application, and the present application is not limited to the above-mentioned examples. Changes, modifications, additions or replacements made by those skilled in the art within the scope of the present application should also be within the protection scope of the present application.
Claims
1. A kiln exhaust gas treatment system, characterized in that: it comprises an air inlet pipe (1), a heat exchanger (2), an activated carbon tank (3), an air outlet pipe (4) and an air outlet pipe (5) connected in sequence, the air inlet end of the air inlet pipe (1) is connected with the kiln, a fire damper (6) is arranged between the heat exchanger (2) and the activated carbon tank (3), a dust removal water tank (7) is arranged on one side of the air inlet pipe (1), one end of the dust removal water tank (7) is connected with the air inlet pipe (1) in a through manner, the other end of the dust removal water tank (7) is connected with the air outlet pipe (5) in a through manner, and a bypass valve (8) is arranged between the dust removal water tank (7) and the air outlet pipe (5).
2. The kiln exhaust gas treatment system according to claim 1, characterized in that: the heat exchanger (2) comprises a water cavity (21), an air inlet cavity (22) and an air outlet cavity (23), a plurality of ventilation pipes (24) are arranged in the water cavity (21), the ventilation pipes (24) are connected with the air inlet cavity (22) and the air outlet cavity (23) at two ends respectively, a cooling water inlet (25) and a cooling water outlet (26) are arranged on the water cavity (21), and the cooling water inlet (25) and the cooling water outlet (26) are connected with a cooling water pool respectively.
3. The kiln exhaust gas treatment system according to claim 2, characterized in that: the ventilation pipe (24) is a 304 stainless steel pipe with a pipe diameter of 108 mm.
4. The kiln exhaust gas treatment system according to claim 1, characterized in that: the fire damper (6) and the bypass valve (8) are both two-position two-way electromagnetic valves, one of which is normally closed and the other is normally open, and the fire damper (6) and the bypass valve (8) are electrically connected.
5. The kiln exhaust gas treatment system according to claim 1, characterized in that: a tee pipe (41) is arranged at the end of the air outlet pipe (4), the other two ends of the tee pipe (41) are connected with the air outlet pipe (5) and a bypass pipe (42) respectively, and the bypass valve (8) is arranged between the bypass pipe (42) and the dust removal water tank (7).
6. The kiln exhaust gas treatment system according to claim 1, characterized in that: the outer diameter of the heat exchanger (2) is 0.8 m, and the length of the heat exchanger (2) is 5 m.
7. The kiln exhaust gas treatment system according to claim 1, characterized in that: the activated carbon tank (3) is two groups arranged side by side, and the two groups of activated carbon tanks (3) are connected through a bend pipe.
8. The kiln exhaust gas treatment system according to claim 7, characterized in that: the activated carbon tank (3) comprises a tank door (31) and a tank body (32), the tank door (31) is hingedly connected with the tank body (32) on one side, a buckle (33) is arranged on the other side of the tank door (31), and the buckle (33) is connected with the tank body (32) in a lap joint manner.