Denitration catalyst regeneration and flue gas purification integrated device
By designing integrated rejuvenation catalyst recycling and smoke purification integrated device, the technical means such as negative pressure vacuum vacuum, ultrasonic cleaning, active component immersion and heat recovery are used to solve low regeneration efficiency, high energy consumption and environmental pollution in traditional technologies The problem has achieved efficient catalyst recycling and smoke purification, and has significant economic and environmental benefits.
Patent Information
- Application Number
- CN202423036831.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-10
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-12-10
AI Technical Summary
Traditional denitrification catalyst regeneration and flue gas purification technologies have problems such as low regeneration efficiency, high energy consumption, complex equipment and large area. If the waste liquid and waste gas generated during the catalyst regeneration process are improperly treated, it may cause secondary environmental regeneration. pollute.
Designed a regeneration catalyst recycling and flue gas purification integrated device. Through the integrated design, the efficient regeneration and flue purification of waste dehydrated catalysts, including closed hoods, cleaning grooves, ultrasonic cleaning tanks, active component impregnation devices, dry boxes, dry boxes, dry boxes, dry boxes, dry boxes, dry boxes, dry boxes, dry boxes, dry boxes, dry boxes, dry boxes, dry boxes, dry boxes, dry boxes, dry boxes, and dry boxes. The whirlwind dust collector, denitration device, desulfurization device and emission device use negative voltage vacuum cleaner, ultrasonic cleaning, active component immersion and heat recovery.
It achieves efficient regeneration of spent denitration catalysts and efficient purification of flue gas, improves energy utilization efficiency, reduces operating costs, reduces environmental pollution, and has significant economic and environmental benefits.
Smart Images
Figure CN222384843U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of catalyst regeneration, and in particular relates to a denitration catalyst regeneration and flue gas purification integrated device. Background Art
[0002] With the rapid development of industrialization, the consumption of energy such as coal and fuel oil has increased dramatically, and the resulting nitrogen oxides (NO x ) emission problem is becoming increasingly serious, posing a serious threat to the atmospheric environment and human health. Denitrification catalyst is used to reduce NO x One of the key technologies for emission, its performance and service life directly affect the effect of flue gas purification. However, the denitrification catalyst will gradually deactivate during use and needs to be regenerated to restore its activity.
[0003] Traditional denitrification catalyst regeneration and flue gas purification technologies have many shortcomings, such as low regeneration efficiency, high energy consumption, complex equipment and large footprint. In addition, if the waste liquid and waste gas generated during the catalyst regeneration process are not properly handled, they may cause secondary pollution to the environment. Therefore, it is particularly important to develop an efficient, energy-saving and environmentally friendly denitrification catalyst regeneration and flue gas purification integrated device. Utility Model Content
[0004] In view of the above deficiencies in the prior art, the purpose of the utility model is to provide an integrated device for denitrification catalyst regeneration and flue gas purification, which realizes efficient regeneration of waste denitrification catalyst and flue gas purification through integrated design, effectively improves energy utilization efficiency, reduces operating costs, and reduces environmental pollution, with significant economic and environmental benefits.
[0005] The utility model is realized by adopting the following technical solutions:
[0006] The denitration catalyst regeneration and flue gas purification integrated device comprises a closed hood, a cleaning tank, an ultrasonic cleaning tank, an active component impregnation device, a drying box, a cyclone dust collector, a denitration device, a desulfurization device and an emission device which are connected in sequence, wherein the cleaning liquid outlets of the cleaning tank and the ultrasonic cleaning tank are both connected to the first heat exchanger, a second heat exchanger is provided between the exhaust gas outlet of the drying box and the inlet of the cyclone dust collector, and the closed hood is connected to a negative pressure dust suction device through a pipeline.
[0007] The outlet of the first heat exchanger is connected to a waste liquid collection tank.
[0008] The cleaning tank and the ultrasonic cleaning tank are respectively connected with a cleaning liquid inlet pipeline and a circulation pump.
[0009] The cleaning tank and the ultrasonic cleaning tank are respectively provided with heaters, and the ultrasonic cleaning tank is provided with an ultrasonic generator.
[0010] An inertial dust collector is also provided between the closed cover and the negative pressure dust suction device.
[0011] A draining device is also provided between the active component impregnation device and the drying box.
[0012] The working principle of the integrated device for denitration catalyst regeneration and flue gas purification is as follows:
[0013] The waste denitration catalyst is first transported to a closed cover, and the dust and particulate matter on the catalyst surface are removed by a negative pressure dust suction device. The waste denitration catalyst after dust suction is transported to a cleaning tank for preliminary cleaning of the waste denitration catalyst after dust suction. A heater is provided in the cleaning tank to ensure that the temperature of the cleaning liquid is constant and improve the cleaning effect. At the same time, a circulating pump is connected to the outside of the cleaning tank to realize the recycling of the cleaning liquid. The cleaning liquid outlets of the cleaning tank and the ultrasonic cleaning tank are both connected to the shell side inlet of the first heat exchanger, and heat exchange is performed with the cooling medium in the tube side to recover the heat in the waste cleaning liquid. The waste cleaning liquid after heat exchange is collected to the waste liquid collection tank through the shell side outlet pipeline for further treatment. The waste denitration catalyst after preliminary cleaning is sent to the ultrasonic cleaning tank, and the high-frequency vibration effect generated by its built-in ultrasonic generator is used to further remove the stubborn stains and sediments on the surface of the waste denitration catalyst. The waste denitration catalyst after ultrasonic cleaning is sent to the active component impregnation device, where it is impregnated with a solution containing active components to restore its catalytic activity. The impregnated catalyst passes through a draining device to remove excess impregnation liquid on the surface of the impregnated catalyst to avoid energy waste in the subsequent drying process. After draining, the catalyst is sent to a drying box for drying, and the regenerated denitration catalyst is obtained after drying.
[0014] During the drying process, the waste gas generated in the drying box is heat exchanged with the cooling medium through the second heat exchanger to recover the heat in the waste gas and improve energy utilization efficiency. After the waste gas after heat exchange is dusted by the cyclone dust collector, it enters the denitrification device and desulfurization device in turn for purification to remove pollutants such as nitrogen oxides and sulfur oxides. The waste gas that meets the standards after purification is finally discharged through the emission device.
[0015] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0016] The integrated device for regenerating the denitrification catalyst and purifying the flue gas described in the utility model can effectively remove dust, particulate matter and stubborn stains on the surface of the waste denitrification catalyst through integrated design, so as to restore its catalytic activity and achieve regeneration. At the same time, it can recover the heat in the cleaning liquid and the dry exhaust gas, improve the energy utilization efficiency, and denitrate and desulfurize the exhaust gas generated during the whole process, thereby reducing the emission of pollutants such as nitrogen oxides and sulfur oxides. It has efficient catalyst regeneration and flue gas purification functions, is beneficial to environmental protection, can reduce treatment costs, and improve the comprehensive benefits of industrial waste gas treatment. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a structural schematic diagram of the integrated device for denitration catalyst regeneration and flue gas purification described in the utility model;
[0018] In the figure: 1. Sealed cover; 2. Cleaning tank; 3. Ultrasonic cleaning tank; 4. Active component impregnation device; 5. Drying box; 6. Cyclone dust collector; 7. Denitrification device; 8. Desulfurization device; 9. Discharge device; 10. First heat exchanger; 11. Second heat exchanger; 12. Negative pressure dust suction device; 13. Waste liquid collection tank; 14. Cleaning liquid inlet pipeline; 15. Circulation pump; 16. Heater; 17. Ultrasonic generator; 18. Inertial dust collector; 19. Draining device. DETAILED DESCRIPTION
[0019] In order to make the purpose and technical solution of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings.
[0020] Example 1
[0021] like Figure 1 As shown, the denitration catalyst regeneration and flue gas purification integrated device comprises a closed cover 1, a cleaning tank 2, an ultrasonic cleaning tank 3, an active component impregnation device 4, a drying box 5, a cyclone dust collector 6, a denitration device 7, a desulfurization device 8 and an emission device 9 which are connected in sequence, wherein the cleaning liquid outlets of the cleaning tank 2 and the ultrasonic cleaning tank 3 are both connected to the first heat exchanger 10, a second heat exchanger 11 is provided between the exhaust gas outlet of the drying box 5 and the inlet of the cyclone dust collector 6, and the closed cover 1 is connected to a negative pressure dust suction device 12 through a pipeline.
[0022] The outlet of the first heat exchanger 10 is connected to a waste liquid collection tank 13 .
[0023] The cleaning tank 2 and the ultrasonic cleaning tank 3 are respectively connected with a cleaning liquid inlet pipeline 14 and a circulation pump 15.
[0024] The cleaning tank 2 and the ultrasonic cleaning tank 3 are respectively provided with a heater 16 , and the ultrasonic cleaning tank 3 is provided with an ultrasonic generator 17 .
[0025] An inertial dust collector 18 is also provided between the closed cover 1 and the negative pressure dust suction device 12 .
[0026] A draining device 19 is also provided between the active component impregnation device 4 and the drying box 5 .
[0027] When working, the specific steps are as follows:
[0028] An inertial dust collector 18 is added between the closed cover 1 and the negative pressure dust collection device 12 to preliminarily remove large particles of impurities. The waste denitration catalyst is first sent into the closed cover 1. After the large particles of impurities are preliminarily removed by the connected inertial dust collector 18, the dust and particulate matter on the surface of the catalyst are further effectively removed under the action of the negative pressure dust collection device 12. The waste denitration catalyst that has been dusted is then sent to the cleaning tank 2. A heater 16 is provided in the cleaning tank 2 to ensure that the temperature of the cleaning liquid is constant and improve the cleaning effect. The cleaning liquid enters the cleaning tank 2 through the cleaning liquid inlet pipeline 14, and realizes self-circulation under the action of the circulating pump 15 to improve the cleaning efficiency. The catalyst after preliminary cleaning is sent to the ultrasonic cleaning tank 3. The high-frequency vibration effect generated by the ultrasonic generator 17 can penetrate into the interior of the catalyst, further remove stubborn stains and sediments on the surface, and ensure the cleanliness of the catalyst. During the cleaning process, the cleaning liquid outlets of the cleaning tank 2 and the ultrasonic cleaning tank 3 are connected to the shell side inlet of the first heat exchanger 10, and the waste liquid exchanges heat with the cooling medium in the tube side in the shell side of the first heat exchanger 10 to recover the heat in the waste cleaning liquid. The waste liquid after heat exchange flows out of the first heat exchanger 10 through the shell side outlet pipeline and finally enters the waste liquid collection tank 13 for further treatment.
[0029] The cleaned catalyst enters the active component impregnation device 4, where it is impregnated with a solution containing active components to restore its catalytic activity. The impregnated catalyst passes through the draining device 19 to remove excess impregnation liquid on the surface, preparing for the subsequent drying step. The drained catalyst is sent to the drying box 5 for drying treatment, and the regenerated catalyst is obtained after the drying treatment.
[0030] During the drying process, the exhaust gas generated by the drying box 5 exchanges heat with the cooling medium through the second heat exchanger 11 to recover the heat in the exhaust gas. After the exhaust gas is dedusted by the cyclone dust collector 6, it enters the denitrification device 7 and the desulfurization device 8 for purification in turn to remove pollutants such as nitrogen oxides and sulfur oxides. Finally, the exhaust gas that meets the purification standards is safely discharged into the atmosphere through the discharge device 9.
Claims
1. A denitration catalyst regeneration and flue gas purification integrated device, characterized in that: The invention comprises a closed cover (1), a cleaning tank (2), an ultrasonic cleaning tank (3), an active component impregnation device (4), a drying box (5), a cyclone dust collector (6), a denitration device (7), a desulfurization device (8) and a discharge device (9) which are connected in sequence, wherein the cleaning liquid outlets of the cleaning tank (2) and the ultrasonic cleaning tank (3) are both connected to a first heat exchanger (10), a second heat exchanger (11) is provided between the exhaust gas outlet of the drying box (5) and the inlet of the cyclone dust collector (6), and the closed cover (1) is connected to a negative pressure dust suction device (12) through a pipeline.
2. The integrated device for denitration catalyst regeneration and flue gas purification according to claim 1, characterized in that: The outlet of the first heat exchanger (10) is connected to a waste liquid collection tank (13).
3. The integrated device for denitration catalyst regeneration and flue gas purification according to claim 1, characterized in that: The cleaning tank (2) and the ultrasonic cleaning tank (3) are respectively connected to a cleaning liquid inlet pipeline (14) and a circulation pump (15).
4. The integrated device for denitration catalyst regeneration and flue gas purification according to claim 1, characterized in that: The cleaning tank (2) and the ultrasonic cleaning tank (3) are respectively provided with a heater (16), and the ultrasonic cleaning tank (3) is provided with an ultrasonic generator (17).
5. The integrated device for denitration catalyst regeneration and flue gas purification according to claim 1, characterized in that: An inertial dust collector (18) is also provided between the closed cover (1) and the negative pressure dust suction device (12).
6. The integrated device for denitration catalyst regeneration and flue gas purification according to claim 1, characterized in that: A draining device (19) is also provided between the active component impregnation device (4) and the drying box (5).