Glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system

Abstract

The utility model discloses a glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system, and relates to the technical field of glass fiber kiln waste gas treatment. The glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system comprises a first-stage hot air waste heat device, a first-stage steam waste heat device, a desulfurization tower, a dust and nitrate integrated device, a second-stage steam waste heat device, an SDA device, a fan and a chimney, wherein the exhaust end of the first-stage hot air waste heat device is fixedly connected with the air inlet end of the first-stage steam waste heat device through a pipeline. Through the design of the first-stage hot air waste heat device, high-temperature waste gas and air can be subjected to non-contact heat exchange, a large amount of air is converted into hot air for production of a production line, energy consumption of production of the production line is reduced, economic benefits are greatly improved, and through cooperation of the first-stage steam waste heat device and the second-stage steam waste heat device, the production efficiency is improved. Steam can be generated by means of waste gas heat, heat recovery sufficiency is improved, and meanwhile the problem that the whole treatment process is limited by the too high waste gas temperature is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of glass fiber kiln waste gas treatment, in particular to a glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system. Background Art

[0002] Fiberglass kilns are key equipment in the fiberglass production process, primarily used to melt raw glass and form glass fibers. Fiberglass kilns are essential melting devices in the glass manufacturing industry, and their design and technology play a crucial role in improving fiberglass production efficiency and product quality. Kiln technology, at the core of fiberglass production, directly impacts the industry's competitiveness and market share. With technological advancements, the design and operation of fiberglass kilns have matured, meeting the demands of large-scale, high-quality production. The importance of treating fiberglass kiln exhaust gases is self-evident, as these gases contain pollutants such as SO2, NOx, and CO2, which pose a threat to the environment and human health. To reduce emissions of these pollutants, a series of treatment measures have been implemented.

[0003] In the traditional fiberglass kiln exhaust gas treatment process, there is basically no waste heat utilization device, and the waste heat utilization rate is not high, which will lead to a large amount of heat energy waste. At the same time, the entire treatment process is restricted by the excessively high exhaust gas temperature, resulting in poor economic benefits. Utility Model Content

[0004] The purpose of the present invention is to provide a glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system to solve the problems raised in the above background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] A glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system, the glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system includes a first-level hot air waste heat device, a first-level steam waste heat device, a desulfurization tower, a dust and nitrate integrated device, a second-level steam waste heat device, an SDA device (Spray Dryer Absorber rotary spray drying absorber), a fan and a chimney, the exhaust end of the first-level hot air waste heat device is fixedly connected to the air inlet end of the first-level steam waste heat device through a pipeline, the exhaust end of the first-level steam waste heat device is fixedly connected to the air inlet end of the desulfurization tower through a pipeline, the exhaust end of the desulfurization tower is fixedly connected to the air inlet end of the dust and nitrate integrated device through a pipeline, the exhaust end of the dust and nitrate integrated device is fixedly connected to the air inlet end of the second-level steam waste heat device through a pipeline, the exhaust pipe of the second-level steam waste heat device is fixedly connected to the air inlet end of the SDA device, the exhaust end of the SDA device is fixedly connected to the input end of the fan through a pipeline, and the output end of the fan is fixedly connected to the outer surface of the chimney through a pipeline.

[0007] Preferably, the air inlet end of the first-stage hot air waste heat device is fixedly connected to a kiln flue gas output pipe, and the outer surface of the first-stage hot air waste heat device is fixedly connected to a denitrification agent addition pipe.

[0008] Preferably, a first desulfurizing agent adding pipe is fixedly connected to the outer surface of the desulfurization tower, and a second desulfurizing agent adding pipe is fixedly connected to the outer wall of the exhaust pipe of the secondary steam waste heat device.

[0009] Preferably, the first-stage hot air waste heat device is used to perform non-contact heat exchange between high-temperature exhaust gas and air.

[0010] Preferably, a ceramic filter tube is provided inside the dust and saltpeter integrated device.

[0011] Due to the adoption of the above technical solution, the present invention has achieved the following technical advancements compared to the prior art:

[0012] 1. The utility model provides a glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system. Through the design of the first-level hot air waste heat device, it can make the high-temperature waste gas and air perform non-contact heat exchange, and convert a large amount of air into hot air for production line use, reducing the energy consumption of the production line and greatly improving the economic benefits. Through the cooperation of the first-level steam waste heat device and the second-level steam waste heat device, steam can be produced with the help of the waste gas heat, improving the adequacy of heat recovery, and avoiding the problem that the entire treatment process is restricted by the excessively high waste gas temperature.

[0013] 2. The utility model provides a glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system. By combining dust removal and denitrification in the same equipment, the equipment floor space can be saved. Heat recovery is used for cooling, which will not increase the fan load and will not cause waste of resources. This system adopts full dry desulfurization, which will not produce sewage, but can ensure a high desulfurization efficiency and meet the requirements of desulfurization.

[0014] 3. The utility model provides a glass fiber exhaust gas waste heat recovery and two-stage desulfurization treatment system. This system has the effect of efficient denitrification and desulfurization, can effectively reduce the emission of nitrogen oxides, and can also effectively reduce the emission of sulfur dioxide. At the same time, it has a good dust removal effect, can remove a large amount of particulate matter, and reduce dust pollution in the atmosphere. At the same time, it can maximize the utilization of resources, can effectively utilize the waste heat in high-temperature exhaust gas, and greatly reduce resource waste.

[0015] 4. The utility model provides a glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system. The system can adapt to a variety of combustion conditions and fuel types, has a wide range of applications, relatively low water consumption, adopts mature technology, and has high system operation stability. It can simultaneously treat multiple pollutants and achieve integrated environmental protection management. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a structural diagram of the management system of this utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the kiln flue gas output pipe and the denitrification agent addition pipe of the utility model;

[0018] Figure 3 This is a structural diagram of the No. 1 desulfurizer adding pipe of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the No. 2 desulfurizer adding pipe of the utility model.

[0020] In the figure: 1. First-stage hot air waste heat device; 2. First-stage steam waste heat device; 3. Desulfurization tower; 4. Dust and nitrate integrated device; 5. Second-stage steam waste heat device; 6. SDA device; 7. Fan; 8. Chimney; 11. Kiln flue gas output pipe; 12. Denitrification agent addition pipe; 13. No. 1 desulfurization agent addition pipe; 14. No. 2 desulfurization agent addition pipe. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the embodiments:

[0022] like Figure 1-Figure 4 As shown, the utility model provides a glass fiber exhaust gas waste heat recovery and two-stage desulfurization treatment system, which includes a first-level hot air waste heat device 1, a first-level steam waste heat device 2, a desulfurization tower 3, a dust and nitrate integrated device 4, a second-level steam waste heat device 5, an SDA device 6, a fan 7 and a chimney 8. The exhaust end of the first-level hot air waste heat device 1 is fixedly connected to the air inlet end of the first-level steam waste heat device 2 through a pipeline. First, the exhaust gas from the glass fiber kiln will enter the first-level hot air waste heat device 1, and the denitrification agent is sprayed into the first-level hot air waste heat device 1. SNCR denitrification is performed first, and the high-temperature exhaust gas and the air undergo non-contact heat exchange, converting a large amount of air into hot air for production line use, reducing the energy consumption of the production line and greatly improving the economic benefits. The high-temperature exhaust gas is reduced to a certain temperature and enters the first-level steam waste heat device 2. Because the exhaust gas temperature has dropped to a suitable temperature, the temperature resistance limit of the material selected for the first-level steam waste heat device 2 is reduced, and the equipment cost is correspondingly reduced. The generated steam can be used for the factory area, which also improves the economic benefits.

[0023] Further, if Figure 1-Figure 4As shown, the exhaust end of the first-stage steam waste heat device 2 is fixedly connected to the air inlet end of the desulfurization tower 3 through a pipeline, and the exhaust end of the desulfurization tower 3 is fixedly connected to the air inlet end of the dust and nitrate integrated device 4 through a pipeline. The exhaust gas after cooling by the first-stage steam waste heat device 2 enters the desulfurization tower 3, and the exhaust gas is fully in contact with the desulfurizer Ca in the tower, and the physical and chemical reactions are quickly completed to achieve the purpose of pre-desulfurization, laying a good foundation for subsequent deep desulfurization. The exhaust gas undergoes a mixed desulfurization reaction in a fluidized state in the desulfurization tower 3 and then enters the dust and nitrate integrated device 4 through the flue. After the exhaust gas is evenly distributed through the diversion and airflow, the dust with larger particle size settles under the action of gravity, and the dust with small particle size takes the opportunity to form a dust cake layer on the surface of the filter material, and undergoes secondary pre-desulfurization on the dust cake layer on the surface of the ceramic filter tube. The dust-free and low-sulfur exhaust gas passes through the surface of the filter material and contacts the catalyst in the filter tube to react, thereby achieving the purpose of removing nitrogen oxides.

[0024] Further, if Figure 1-Figure 4 As shown, the exhaust end of the dust and saltpeter integrated device 4 is fixedly connected to the air inlet end of the secondary steam waste heat device 5 through a pipeline, the exhaust pipe of the secondary steam waste heat device 5 is fixedly connected to the air inlet end of the SDA device 6, the exhaust end of the SDA device 6 is fixedly connected to the input end of the fan 7 through a pipeline, and the output end of the fan 7 is fixedly connected to the outer surface of the chimney 8 through a pipeline. The exhaust gas discharged by the dust and saltpeter integrated device 4 enters the secondary steam waste heat device 5, and generates a small amount of steam for use in the factory area, which once again improves the economic benefits and reduces the exhaust gas temperature to meet the subsequent desulfurization temperature of the SDA device 6. The exhaust gas after maximizing the waste heat utilization enters the SDA device 6, and the desulfurizer Na mixes, contacts and reacts with the exhaust gas entering the equipment, so that the SO2 gas can be fully absorbed to achieve efficient desulfurization. The waste desulfurizer after the reaction is intercepted and captured by the bag, so that the dust concentration in the exhaust gas is reduced to ultra-low. The exhaust gas treated by the SDA device 6 has met the ultra-low emission indicators of dust and saltpeter and is transported to the chimney 8 through the fan 7 for discharge.

[0025] Further, if Figure 1-Figure 4 As shown, the air inlet end of the first-level hot air waste heat device 1 is fixedly connected to the kiln flue gas output pipe 11, the surface of the first-level hot air waste heat device 1 is fixedly connected to the denitrification agent addition pipe 12, the surface of the desulfurization tower 3 is fixedly connected to the first desulfurization agent addition pipe 13, the outer wall of the exhaust pipe of the second-level steam waste heat device 5 is fixedly connected to the second desulfurization agent addition pipe 14, the first-level hot air waste heat device 1 is used to perform non-contact heat exchange between high-temperature exhaust gas and air, and a ceramic filter tube is arranged inside the dust and saltpeter integrated device 4.

[0026] It should be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections; they can refer to direct connections or indirect connections through an intermediate medium; they can refer to internal communication between two components or the interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on specific circumstances.

[0027] The above generally describes the present invention in detail. However, it is obvious to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system, characterized by: The glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system includes a first-level hot air waste heat device, a first-level steam waste heat device, a desulfurization tower, a dust and nitrate integrated device, a second-level steam waste heat device, an SDA device, a fan and a chimney. The exhaust end of the first-level hot air waste heat device is fixedly connected to the air inlet end of the first-level steam waste heat device through a pipeline, the exhaust end of the first-level steam waste heat device is fixedly connected to the air inlet end of the desulfurization tower through a pipeline, the exhaust end of the desulfurization tower is fixedly connected to the air inlet end of the dust and nitrate integrated device through a pipeline, the exhaust end of the dust and nitrate integrated device is fixedly connected to the air inlet end of the second-level steam waste heat device through a pipeline, the exhaust pipe of the second-level steam waste heat device is fixedly connected to the air inlet end of the SDA device, the exhaust end of the SDA device is fixedly connected to the input end of the fan through a pipeline, and the output end of the fan is fixedly connected to the outer surface of the chimney through a pipeline.

2. The glass fiber exhaust gas waste heat recovery and two-stage desulfurization treatment system according to claim 1 is characterized by: The air inlet end of the first-level hot air waste heat device is fixedly connected to the kiln flue gas output pipe, and the surface of the first-level hot air waste heat device is fixedly connected to the denitrification agent addition pipe.

3. The glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system according to claim 1 is characterized by: A first desulfurizing agent adding pipe is fixedly connected to the outer surface of the desulfurizing tower, and a second desulfurizing agent adding pipe is fixedly connected to the outer wall of the exhaust pipe of the secondary steam waste heat device.

4. The glass fiber exhaust gas waste heat recovery and two-stage desulfurization treatment system according to claim 1 is characterized by: The first-stage hot air waste heat device is used to perform non-contact heat exchange between high-temperature exhaust gas and air.

5. The glass fiber waste gas waste heat recovery and two-stage desulfurization treatment system according to claim 1 is characterized by: A ceramic filter tube is arranged inside the dust and saltpeter integrated device.

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