Glass fiber kiln waste gas waste heat recovery and limestone-gypsum treatment system

Abstract

The utility model discloses a glass fiber kiln waste gas waste heat recovery and limestone-gypsum treatment system, and relates to the technical field of glass fiber kiln waste gas treatment. The glass fiber kiln waste gas waste heat recovery and limestone-gypsum treatment system comprises a dry method dust and nitrate integrated device, a waste heat utilization device, a limestone-gypsum method desulfurization device, a fan, a chimney, an ash material precipitation bin, an ash material transfer device and a slurrying ash material storage bin, the exhaust end of the dry dust and nitrate integrated device is fixedly connected with the air inlet end of the waste heat utilization device through a pipeline, and the exhaust end of the waste heat utilization device is fixedly connected with the air inlet end of the limestone-gypsum desulfurization device through a pipeline. Through the design of the dry-method dust and nitrate integrated device, dust removal and denitration can be combined in the same equipment, the occupied area is saved, the dry-method dust and nitrate integrated device is used for preferentially carrying out denitration and dust removal on flue gas and removing part of SO2, the temperature drop of the flue gas is small, waste heat utilization can be carried out on the flue gas, and the energy cost of an enterprise is reduced.

Description

Technical Field

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

[0002] During the glass fiber production process, the exhaust gas from the kilns is at a high temperature and contains a variety of pollutants, such as sulfur dioxide (SO2), nitrogen oxides (NOx), and dust. Among them, NOx and SO2 are the main pollutants, with high emission concentrations. For example, SO2 emission concentrations are between 2000-3000mg / Nm3, and NOx emission concentrations are between 2000-3000mg / Nm3. Compared with pulverized coal-fired power plant boilers, glass kiln dust is more complex, with characteristics such as low density, strong adhesion, and easy solubility in water. The emission concentration is generally 400-800mg / Nm3. Due to the complex raw materials used in glass fiber production, the flue gas contains high levels of fluoride, sulfur dioxide, nitrogen oxides, and various salts, which poses many technical challenges to flue gas treatment. In order to promote the transformation and upgrading of the glass fiber industry and achieve green manufacturing and high-quality development of enterprises, it is necessary to adopt effective technical means to treat the exhaust gas from glass fiber kilns, realize waste heat recovery and desulfurization, denitrification and dust removal, so as to reduce pollutant emissions and improve energy efficiency.

[0003] In the existing waste gas treatment system, denitrification and dust removal are divided into two or more devices, which occupy a large area, are cumbersome to operate and maintain, and have low waste gas treatment efficiency, and cannot make full use of resources. Utility Model Content

[0004] The purpose of the utility model is to provide a fiberglass kiln exhaust gas waste heat recovery and limestone-gypsum 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 fiberglass kiln exhaust gas waste heat recovery and limestone-gypsum treatment system, the fiberglass kiln exhaust gas waste heat recovery and limestone-gypsum treatment system includes a dry dust and saltpeter integrated device, a waste heat utilization device, a limestone-gypsum desulfurization device, a fan, a chimney, an ash sedimentation bin, an ash transfer device and a pulping ash storage bin, the exhaust end of the dry dust and saltpeter integrated device is fixedly connected to the air inlet end of the waste heat utilization device through a pipeline, the exhaust end of the waste heat utilization device is fixedly connected to the air inlet end of the limestone-gypsum desulfurization device through a pipeline, the air inlet pipe of the fan is fixedly connected to the exhaust end of the limestone-gypsum desulfurization device, the air outlet pipe of the fan is fixedly connected to the air inlet end of the chimney, the ash sedimentation bin is fixedly connected to the bottom of the dry dust and saltpeter integrated device, the feed end of the ash transfer device is fixedly connected to the bottom of the ash sedimentation bin, and the discharge end of the ash transfer device is fixedly connected to the top of the pulping ash storage bin.

[0007] Preferably, the air inlet end of the dry-process dust and saltpeter integrated device is fixedly connected to a kiln flue gas transmission pipeline, and the outer surface of the kiln flue gas transmission pipeline is fixedly connected to a denitrification agent filling pipeline.

[0008] Preferably, a desulfurizer filling pipeline is fixedly connected to the outer surface of the kiln flue gas transmission pipeline.

[0009] Preferably, an ash unloading device and a powder material conveying device are fixedly connected to the bottom of the pulping ash storage bin.

[0010] Preferably, a feed pipe is fixedly connected to the top of the pulping ash storage bin.

[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 waste heat recovery system for waste gas from a fiberglass kiln and a limestone-gypsum treatment system. Through the design of a dry dust and nitrate integrated device, dust removal and denitrification can be combined in the same equipment to save floor space. The dry dust and nitrate integrated device preferentially denitrates and removes dust from the flue gas and removes part of the SO2, so that the flue gas temperature drop is small, and the waste heat of the flue gas can be utilized, which reduces the energy cost of the enterprise and improves the overall energy utilization efficiency. The ash produced by the dry dust and nitrate integrated device can be used in the pulping part of the limestone-gypsum desulfurization device, thereby realizing the function of saving costs and reducing consumption.

[0013] 2. The utility model provides a waste heat recovery and limestone-gypsum treatment system for waste gas from a fiberglass kiln. Denitrification is carried out through a dry dust and nitrate integrated device, which can effectively reduce the emission of nitrogen oxides and meet strict environmental protection standards. The dry dust and nitrate integrated device can also remove a large amount of particulate matter and reduce dust pollution in the atmosphere. The dry dust and nitrate integrated device adopts dry denitrification to reduce water resource consumption, and the gypsum generated during the operation of the limestone-gypsum desulfurization device can be recycled to reduce waste. The system adopts mature technology, operates stably and reliably, has relatively low maintenance costs, can treat multiple pollutants at the same time, and realizes the function of integrated environmental protection management. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a structural diagram of the management system of this utility model;

[0015] Figure 2 This is a schematic structural diagram of the air inlet end of the dry-process dust and saltpeter integrated device of the present invention.

[0016] In the figure: 1. Dry-process dust and saltpeter integrated device; 11. Kiln flue gas transmission pipeline; 12. Denitrification agent filling pipeline; 13. Desulfurization agent filling pipeline; 2. Waste heat utilization device; 3. Limestone-gypsum desulfurization device; 4. Fan; 5. Chimney; 6. Ash sedimentation bin; 7. Ash transfer device; 8. Slurry ash storage bin. DETAILED DESCRIPTION

[0017] The present invention is further described in detail below with reference to the embodiments:

[0018] like Figure 1-Figure 2As shown, the utility model provides a glass fiber kiln exhaust gas waste heat recovery and limestone-gypsum treatment system, the glass fiber kiln exhaust gas waste heat recovery and limestone-gypsum treatment system includes a dry dust and saltpeter integrated device 1, a waste heat utilization device 2, a limestone-gypsum desulfurization device 3, a fan 4, a chimney 5, an ash sedimentation bin 6, an ash transfer device 7 and a pulping ash storage bin 8, the exhaust end of the dry dust and saltpeter integrated device 1 is fixedly connected to the air inlet end of the waste heat utilization device 2 through a pipeline, the exhaust end of the waste heat utilization device 2 is fixedly connected to the air inlet end of the limestone-gypsum desulfurization device 3 through a pipeline, the air inlet pipe of the fan 4 is fixedly connected to the exhaust end of the limestone-gypsum desulfurization device 3, and the air outlet pipe of the fan 4 is fixedly connected to the chimney. The air inlet end of the chimney 5 is fixedly connected, the ash sedimentation bin 6 is fixedly connected to the bottom of the dry-process dust and saltpeter integrated device 1, the feed end of the ash transfer device 7 is fixedly connected to the bottom of the ash sedimentation bin 6, and the discharge end of the ash transfer device 7 is fixedly connected to the top of the pulping ash storage bin 8. The air inlet end of the dry-process dust and saltpeter integrated device 1 is fixedly connected to a kiln flue gas transmission pipe 11, and a denitrification agent filling pipe 12 is fixedly connected to the outer surface of the kiln flue gas transmission pipe 11, and a desulfurization agent filling pipe 13 is fixedly connected to the outer surface of the kiln flue gas transmission pipe 11. Through the cooperation of the denitrification agent filling pipe 12 and the desulfurization agent filling pipe 13, the denitrification agent and the desulfurization agent can be integrated into the kiln exhaust gas in advance, thereby improving the effect of subsequent treatment.

[0019] Furthermore, if Figure 1-Figure 2 As shown, the dry dust and saltpeter integrated device 1 can realize the functions of denitrification, dust removal and preliminary desulfurization. The dry dust and saltpeter integrated device 1 is used to convert harmful nitrogen oxides into harmless substances through chemical reactions. The dry dust and saltpeter integrated device 1 adopts advanced dry treatment technology. The dry dust and saltpeter integrated device 1 can effectively reduce the harm of nitrogen oxides to the atmospheric environment. The dry dust and saltpeter integrated device 1 is used to capture tiny particulate matter in the exhaust gas, greatly reducing dust emissions and ensuring air quality. The dry dust and saltpeter integrated device 1 is used for pre-desulfurization treatment, laying a good foundation for deep treatment at the back end, reducing the load and difficulty of subsequent treatment, and the waste heat utilization device 2 can recover the waste heat of the gas output by the dry dust and saltpeter integrated device 1. The waste heat utilization device 2 is used to convert the waste heat in the flue gas into steam. The steam output by the waste heat utilization device 2 can provide stable energy support for the production and operation of the plant. In this way, not only the energy recycling is realized and the energy cost of the enterprise is reduced, but also the overall energy utilization efficiency is improved, making a positive contribution to sustainable development.

[0020] Furthermore, if Figure 1-Figure 2As shown, the bottom of the pulping ash storage bin 8 is fixedly connected with an ash unloading device. When the ash unloading device is turned on, the material inside the pulping ash storage bin 8 can be discharged. The top of the pulping ash storage bin 8 is fixedly connected with a feeding pipe. The feeding pipe allows a certain amount of ash to be stored in the pulping ash storage bin. The limestone-gypsum desulfurization device 3 can perform deep desulfurization treatment on the gas output by the waste heat utilization device 2. The limestone-gypsum desulfurization device 3 is used to desulfurize the flue gas with the help of limestone-gypsum, ensuring that the sulfur oxides in the flue gas are removed to the maximum extent, so that the sulfur content in the flue gas finally discharged strictly meets the environmental protection standards. The fan 4 is used to push the gas output by the limestone-gypsum desulfurization device 3 into the chimney 5, and the chimney 5 is used to discharge the gas into the atmosphere. The entire processing process forms a strict and efficient system. Each link cooperates and works together to ensure the normal operation of the fiberglass kiln and minimize the impact on the environment. The ash sedimentation bin 6 is used to receive the ash generated in the dry dust and saltpeter integrated device 1. The ash transfer device 7 is used to transport the ash in the ash sedimentation bin 6 to the pulping ash storage bin 8. The ash in the pulping ash storage bin 8 can be used for the pulping part of the limestone-gypsum desulfurization device 3.

[0021] 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.

[0022] 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 fiberglass kiln exhaust heat recovery and limestone-gypsum treatment system, characterized by: The fiberglass kiln exhaust gas waste heat recovery and limestone-gypsum treatment system includes a dry-process dust and saltpeter integrated device, a waste heat utilization device, a limestone-gypsum desulfurization device, a fan, a chimney, an ash sedimentation bin, an ash transfer device and a pulping ash storage bin. The exhaust end of the dry-process dust and saltpeter integrated device is fixedly connected to the air inlet end of the waste heat utilization device through a pipeline, the exhaust end of the waste heat utilization device is fixedly connected to the air inlet end of the limestone-gypsum desulfurization device through a pipeline, the air inlet pipe of the fan is fixedly connected to the exhaust end of the limestone-gypsum desulfurization device, the air outlet pipe of the fan is fixedly connected to the air inlet end of the chimney, the ash sedimentation bin is fixedly connected to the bottom of the dry-process dust and saltpeter integrated device, the feed end of the ash transfer device is fixedly connected to the bottom of the ash sedimentation bin, and the discharge end of the ash transfer device is fixedly connected to the top of the pulping ash storage bin.

2. The fiberglass kiln exhaust heat recovery and limestone-gypsum treatment system according to claim 1 is characterized by: The air inlet end of the dry-process dust and saltpeter integrated device is fixedly connected to a kiln flue gas transmission pipeline, and the outer surface of the kiln flue gas transmission pipeline is fixedly connected to a denitrification agent filling pipeline.

3. The fiberglass kiln exhaust heat recovery and limestone-gypsum treatment system according to claim 2 is characterized by: A desulfurizing agent filling pipeline is fixedly connected to the outer surface of the kiln flue gas transmission pipeline.

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