Flat ceramic membrane drying and sintering production line

Abstract

This invention relates to the field of flat ceramic membrane firing technology, specifically to a flat ceramic membrane drying and sintering production line, including a continuous drying kiln and a main kiln, the main kiln being divided into a degreasing kiln and a firing kiln connected in sequence; the air inlet of the exhaust fan is connected to the drying suction pipe, and the air outlet of the exhaust fan is connected to the exhaust pipe; this invention is rationally designed, organically combining multiple processes such as traditional drying, degreasing, sintering, and waste gas treatment; multi-process automatic continuous operation significantly reduces product defects caused by human factors, and significantly improves product uniformity; it makes full use of waste heat in the production process, resulting in low overall energy consumption; VOCs generated during the production process are treated online, with low treatment costs, emissions meet standards, and environmental pollution is reduced; the utilization of waste heat at the tail end of the firing kiln ensures rapid cooling of the product and can also be used for drying the green body in the continuous drying kiln, avoiding waste of waste heat.

Description

Technical Field

[0001] This invention relates to the field of flat ceramic membrane sintering technology, and specifically to a flat ceramic membrane drying and sintering production line. Background Technology

[0002] As a core component of MBR systems, flat-sheet ceramic membranes have advantages such as good anti-fouling properties, easy cleaning and regeneration, long service life, good chemical stability, and good mechanical strength. They can effectively solve the problems of short service life and susceptibility to acid and alkali corrosion of existing hollow fiber membranes and organic flat-sheet ceramic membranes in engineering applications. They are particularly suitable for the purification of special media, high concentrations, and difficult-to-treat wastewater, and are separation materials with great development prospects.

[0003] In existing flat ceramic membrane production processes, the conventional equipment used for drying, degreasing, and sintering is a drying oven and a shuttle kiln. This process suffers from drawbacks such as discontinuous production, incomplete treatment of degreasing exhaust gases, and poor product quality uniformity. Furthermore, the production process involves secondary handling of products, resulting in high labor intensity and low efficiency for workers. Summary of the Invention

[0004] To address the shortcomings of the aforementioned technical problems, the present invention aims to provide a flat ceramic membrane drying and sintering production line that can continuously complete the drying, degreasing, and sintering processes, treat degreasing waste gas online, avoid product transfer during the production process, significantly reduce the scrap rate caused by misoperation, reduce the labor intensity of workers, and improve production efficiency.

[0005] The technical solution adopted by this invention to solve its technical problem is as follows:

[0006] The flat ceramic membrane drying and sintering production line includes a continuous drying kiln and a main kiln. The main kiln is divided into a degreasing kiln and a firing kiln connected in sequence. A waste gas collection pipe connected to the degreasing kiln is installed above the degreasing kiln. A flue gas treatment furnace and a flue gas collection pipe connected to the firing kiln are respectively installed above the firing kiln. A first blower, an exhaust fan, a second blower, and a first air supply pipe, a second air supply pipe, and a drying suction pipe connected to the continuous drying kiln are respectively installed above the continuous drying kiln. The waste gas collection pipe is connected to the air inlet of the second blower through a waste gas exhaust pipe. The second air supply pipe is connected to the air outlet of the second blower. The flue gas collection pipe is connected to the air inlet of the flue gas treatment furnace. The air outlet of the flue gas treatment furnace is connected to the air inlet of the first blower through a flue gas exhaust pipe. The first air supply pipe is connected to the air outlet of the first blower. The air inlet of the exhaust fan is connected to the drying suction pipe, and the air outlet of the exhaust fan is connected to the exhaust pipe.

[0007] Preferably, the device further includes a conveying device, which includes a drying kiln return line located outside the continuous drying kiln, a main kiln return line located outside the main kiln, and a first longitudinal track and a second longitudinal track connected to the drying kiln return line and the main kiln return line, respectively. An electric shuttle car is installed on the first longitudinal track and the second longitudinal track, and a kiln car is installed on the drying kiln return line and the main kiln return line.

[0008] Preferably, temporary parking spaces are provided on the outer sides of the first and second longitudinal tracks.

[0009] Preferably, both the firing kiln and the degreasing kiln are equipped with electric heating elements, temperature sensors, and vehicle speed monitoring devices.

[0010] Preferably, the flue gas treatment furnace is equipped with an electric heating wire inside, and an online VOC detection instrument is installed at the gas outlet of the flue gas treatment furnace.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] This invention features a rational design that organically combines multiple processes such as drying, degreasing, sintering, and waste gas treatment, resulting in a compact process with a small footprint. The automated continuous operation of multiple processes significantly reduces product defects caused by human factors, resulting in significantly improved product uniformity. It also reduces the labor intensity of workers and increases production efficiency. Furthermore, it fully utilizes waste heat generated during production, leading to low overall energy consumption. The online treatment of VOCs generated during production results in low treatment costs, ensures emissions meet standards, and reduces environmental pollution. The utilization of waste heat at the tail end of the firing kiln ensures rapid cooling of the product and can also be used for drying the green bodies inside the continuous drying kiln, avoiding waste of waste heat. Attached Figure Description

[0013] Figure 1 Schematic diagram of the structure of this invention;

[0014] Figure 2 Side view of the main kiln of this invention.

[0015] In the diagram: 1. Temporary parking space; 2. Exhaust gas collection pipe; 3. Degreasing kiln; 4. Main kiln return line; 5. Equipment platform; 6. Flue gas treatment furnace; 7. Flue gas exhaust pipe; 8. Flue gas collection pipe; 9. Firing kiln; 10. Kiln car; 11. First longitudinal track; 12. Drying kiln return line; 13. Continuous drying kiln; 14. First blower; 15. First air supply pipe; 16. Second air supply pipe; 17. Second blower; 18. Exhaust pipe; 19. Exhaust fan; 20. Drying suction pipe; 21. Exhaust gas exhaust pipe; 22. Electric shuttle car; 23. Second longitudinal track. Detailed Implementation

[0016] The embodiments of the present invention will be further described below with reference to the accompanying drawings:

[0017] Example 1

[0018] like Figure 1-2 As shown, the flat ceramic membrane drying and sintering production line of the present invention includes a continuous drying kiln 13 and a main kiln. The main kiln is divided into a degreasing kiln 3 and a firing kiln 9 connected in sequence. A waste gas collection pipe 2 connected to the degreasing kiln 3 is installed above the degreasing kiln 3. A flue gas treatment furnace 6 and a flue gas collection pipe 8 connected to the firing kiln 9 are respectively installed above the firing kiln 9. The flue gas treatment furnace 6 is installed above the firing kiln 9 via an equipment platform 5. A first blower 14, an exhaust fan 19, a second blower 17, and a first air supply pipe 15 connected to the continuous drying kiln 13 are respectively installed above the continuous drying kiln 13. The second air supply pipe 16 and the drying suction pipe 20 are connected together. The waste gas collection pipe 2 is connected to the air inlet of the second blower 17 through the waste gas exhaust pipe 21. The second air supply pipe 16 is connected to the air outlet of the second blower 17. The flue gas collection pipe 8 is connected to the air inlet of the flue gas treatment furnace 6. The air outlet of the flue gas treatment furnace 6 is connected to the air inlet of the first blower 14 through the flue gas exhaust pipe 7. The first air supply pipe 15 is connected to the air outlet of the first blower 14. The air inlet of the exhaust fan 19 is connected to the drying suction pipe 20, and the air outlet of the exhaust fan 19 is connected to the exhaust pipe 18.

[0019] In addition, a conveying device is also included, which includes a drying kiln return line 12 located outside the continuous drying kiln 13, a main kiln return line 4 located outside the main kiln, and a first longitudinal track 11 and a second longitudinal track 23 connected to the drying kiln return line 12 and the main kiln return line 4, respectively. An electric shuttle car 22 is installed on the first longitudinal track 11 and the second longitudinal track 23, and a kiln car 10 is installed on the drying kiln return line 12 and the main kiln return line 4.

[0020] Temporary parking spaces 1 are provided on the outer sides of the first longitudinal track 11 and the second longitudinal track 23; electric heating elements, temperature sensors and vehicle speed monitoring devices are provided inside the firing kiln 9 and the degreasing kiln 3; electric heating wires are provided inside the flue gas treatment furnace 6, and an online VOC detection instrument is provided at the outlet of the flue gas treatment furnace 6, which can intelligently control the waste gas incineration effect of the flue gas treatment furnace 6.

[0021] Example 2

[0022] Based on Example 1, the waste gas collection pipe 2 is directly connected to the flue gas treatment furnace 6 to treat the waste gas. The waste heat flue gas generated by the firing kiln 9 and the degreasing kiln 3 can be mixed and burned in the flue gas treatment furnace 6, and then enter the continuous drying kiln 13 through the flue gas exhaust pipe 7.

[0023] Specific usage process of this invention:

[0024] During operation, the inspected and qualified flat blanks are loaded onto kiln cars 10 at the end of the forming line and transported by electric shuttle cars 22 into the first longitudinal track 11. The electric shuttle cars 22 push the kiln cars 10 filled with blanks into the continuous drying kiln 13. The heat source of the continuous drying kiln 13 comes from the waste heat from the flue gas of the degreasing kiln 3 and the firing kiln 9. The drying curve of the flat blanks is achieved through precise temperature control by intelligent instruments. The dried blanks are then transported by electric shuttle cars 22 on the second longitudinal track 23 at the end of the drying kiln into the degreasing kiln 3. The degreasing kiln 3 completes the glue removal process of the products through precise temperature control by PLC controller, temperature sensors, and intelligent instruments. The glue removal exhaust gas enters the continuous drying kiln 13 through the exhaust gas collection pipe 2 and exhaust gas exhaust pipe 21 by the suction generated by the second blower 17. The degreased blanks are then dried. The product is transported from kiln car 10 to firing kiln 9 for sintering. The firing temperature is precisely controlled by the combined action of PLC controller, temperature sensor and intelligent instrument to ensure the uniformity of the product. The sintered product finally enters the cooling zone at the rear of firing kiln 9. The waste heat generated in the cooling zone is drawn by the first blower 14 through the flue gas collection pipe 8 into the flue gas treatment furnace 6, and then enters the continuous drying kiln 13 through the flue gas exhaust pipe 7 for waste heat drying. The flue gas treatment furnace 6 is equipped with electric heating wires and VOC online detection instrument at the outlet. By reasonably adjusting the combustion temperature, the waste gas is purified. After cooling, the product is pushed from kiln car 10 to the main kiln return line 4 by electric shuttle car 22 at the kiln tail for unloading. The empty car returns to the end of the forming line through the main kiln return line 4 to start the next cycle.

Claims

1. A flat ceramic membrane drying and sintering production line, comprising a continuous drying kiln (13) and a main kiln, the main kiln being divided into a degreasing kiln (3) and a firing kiln (9) connected in sequence, characterized in that, A waste gas collection pipe (2) connected to the degreasing kiln (3) is provided above the degreasing kiln (3). A flue gas treatment furnace (6) and a flue gas collection pipe (8) connected to the firing kiln (9) are respectively provided above the firing kiln (9). A first blower (14), an exhaust blower (19), a second blower (17), a first air supply pipe (15), a second air supply pipe (16), and a drying suction pipe (20) connected to the continuous drying kiln (13) are respectively provided above the continuous drying kiln (13). The waste gas collection pipe (2) is connected to the waste gas exhaust pipe (21). The second air supply pipe (16) is connected to the air inlet of the second air supply fan (17), the second air supply pipe (16) is connected to the air outlet of the second air supply fan (17), the flue gas collection pipe (8) is connected to the air inlet of the flue gas treatment furnace (6), the air outlet of the flue gas treatment furnace (6) is connected to the air inlet of the first air supply fan (14) through the flue gas exhaust pipe (7), and the first air supply pipe (15) is connected to the air outlet of the first air supply fan (14); the air inlet of the exhaust fan (19) is connected to the drying suction pipe (20), and the air outlet of the exhaust fan (19) is connected to the exhaust pipe (18); It also includes a conveying device, which includes a drying kiln return line (12) set outside the continuous drying kiln (13), a main kiln return line (4) set outside the main kiln, and a first longitudinal track (11) and a second longitudinal track (23) connected to the drying kiln return line (12) and the main kiln return line (4) respectively. An electric shuttle car (22) is set on the first longitudinal track (11) and the second longitudinal track (23), and a kiln car (10) is set on the drying kiln return line (12) and the main kiln return line (4). Temporary parking spaces (1) are provided on the outer sides of the first longitudinal track (11) and the second longitudinal track (23); Both the firing kiln (9) and the degreasing kiln (3) are equipped with electric heating elements, temperature sensors and vehicle speed monitoring devices. The flue gas treatment furnace (6) is equipped with an electric heating wire inside, and a VOC online detection instrument is installed at the outlet of the flue gas treatment furnace (6); The waste gas collection pipe (2) is directly connected to the flue gas treatment furnace (6) to treat the waste gas. The waste heat flue gas generated by the firing kiln (9) and the degreasing kiln (3) can be mixed and burned in the flue gas treatment furnace (6) and then enter the continuous drying kiln (13) through the flue gas exhaust pipe (7).

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