Rapid cooling dry dust removal system

Abstract

The invention discloses a quenching dry dust removal system, including a quenching tower, the upper end of the quenching tower is a flue gas input port and is connected to the flue gas output port of the self-waste heat boiler equipment, a cooling spray device is arranged at the upper end of the quenching tower and corresponding to the flue gas input port; the lower end of the quenching tower is a flue gas output port and is connected to the lower end of the dry reactor, the upper end of the dry reactor is a flue gas output port and is connected to the bag filter input port, and the bag filter output port is connected to the wet scrubber input port; it also includes a slaked lime intermediate bin and an activated carbon bin, and the slaked lime output port at the lower end of the slaked lime intermediate bin and the slaked lime input port at the lower end of the dry reactor, and the activated carbon output port at the lower end of the activated carbon bin and the activated carbon input port at the lower end of the dry reactor are respectively connected through a slaked lime conveying device and an activated carbon conveying device. The invention has the characteristics of being more reasonably designed, being able to improve the quality of flue gas dust removal, and being able to better purify flue gas to meet emission requirements.

Description

Technical Field

[0001] The invention relates to the technical field of dust removal, in particular to a rapid cooling dry dust removal system. Background Art

[0002] In industrial production, a large amount of flue gas is generated during the production and operation of boiler equipment. The flue gas carries a large amount of harmful substances (including sulfur dioxide). In industrial dust removal, the limestone gypsum wet method is mostly used to reduce the sulfur dioxide in the flue gas. This method has the disadvantages of high power consumption, low reuse rate of water resources, and the desulfurization wastewater generated by the discharge needs to be further treated before it can be discharged, resulting in less popularization and application.

[0003] Among the existing dust removal systems, Chinese patent (CN202823149U) discloses a semi-dry desulfurization and dust removal device with bag dust removal; Chinese patent (CN207507256U) discloses a semi-dry desulfurization control system and a semi-dry desulfurization and dust removal working system. However, the above systems have the following problems: 1. The exhaust flue gas has a pungent odor and cannot be discharged directly; 2. The flue gas has a high dust content and cannot directly meet the national emission requirements (100mg / m3); 3. The dust content is high, the wear is large, the maintenance workload is large, and the fan blades are covered with dust, which reduces the life of the fan and other equipment.

[0004] Therefore, those skilled in the art are committed to developing a quench dry dust removal system that has a more reasonable design, can improve the quality of flue gas dust removal, and can better purify the flue gas to meet emission requirements. Summary of the invention

[0005] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is how to provide a quench dry dust removal system with a more reasonable design, which can improve the quality of flue gas dust removal and better purify the flue gas to meet the emission requirements.

[0006] To achieve the above-mentioned purpose, the present invention provides a quenching dry dust removal system, comprising a quenching tower, wherein the upper end of the quenching tower is a flue gas input port and is connected to the flue gas output port of a waste heat boiler device, and a cooling spray device is arranged at the upper end of the interior of the quenching tower and corresponding to the flue gas input port; the lower end of the quenching tower is a flue gas output port and is connected to the lower end of a dry reactor, the upper end of the dry reactor is a flue gas output port and is connected to the input port of a bag filter, and the output port of the bag filter is connected to the input port of a wet scrubbing tower; the system is characterized in that it also comprises a slaked lime intermediate bin and an activated carbon bin, and the slaked lime output port at the lower end of the slaked lime intermediate bin and the slaked lime input port at the lower end of the dry reactor, as well as the activated carbon output port at the lower end of the activated carbon bin and the activated carbon input port at the lower end of the dry reactor are respectively connected through a slaked lime conveying device and an activated carbon conveying device.

[0007] Thus, in the above system, the flue gas is output from the flue gas output port of the waste heat boiler equipment and enters from the flue gas input port at the upper end of the quenching tower. The flue gas moves from top to bottom in the quenching tower and is cooled by the cooling spray device at the upper end of the quenching tower. Then, it is output from the lower end of the quenching tower and enters the dry reactor. After being treated by the dry reactor, it enters the bag filter for dust removal and finally outputs to the wet scrubber. In the above system, when the flue gas is treated inside the dry reactor, the slaked lime intermediate bin and the activated carbon bin respectively transport slaked lime and activated carbon to the dry reactor through the slaked lime conveying device and the activated carbon conveying device, wherein the slaked lime can react with the flue gas and effectively remove harmful substances such as sulfur dioxide in the flue gas, and the activated carbon can adsorb the waste gas in the flue gas and can also adsorb the sulfur dioxide in the flue gas again, so that after being treated by the above system, the sulfur dioxide in the flue gas can be better treated, the dust removal quality of the flue gas can be improved, and the flue gas can be better purified to meet the emission requirements.

[0008] As an optimization, the cooling spray device includes a horizontally arranged main quenching lance, the injection end of which is located directly below the flue gas inlet at the upper end of the quenching tower; it also includes a first auxiliary quenching lance and a second auxiliary quenching lance, which are paired left and right and horizontally located below the main quenching lance, and the injection ends of the first auxiliary quenching lance and the second auxiliary quenching lance are arranged relatively to each other; it also includes a vertically arranged third auxiliary quenching lance, the injection end of the third auxiliary quenching lance extends vertically to below the main quenching lance, and the third auxiliary quenching lance is horizontally located outside the injection end of the main quenching lance; the cooling water input ends of the main quenching lance, the first auxiliary quenching lance, the second auxiliary quenching lance and the third auxiliary quenching lance are each connected to the water supply part structure.

[0009] In this way, by setting up the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun, and the spatial layout between the four, the flue gas input from the flue gas input port at the upper end of the quenching tower can be better cooled down to prepare for subsequent flue gas treatment. And by setting up multiple spray guns, it is also more convenient to adjust to control the temperature of the flue gas.

[0010] As an optimization, the water supply part structure includes an emergency water spray tank, which has a water inlet at the upper end and is connected to the self-integrated water pump through a water supply pipe; the emergency water spray tank also has a compressed air input port at the upper end and is connected to the self-compressed air buffer tank through a compressed air input pipe; the emergency water spray tank has a water outlet at the lower end and is connected to the cooling water input ends of the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun through a water outlet pipe.

[0011] In this way, the structure of the water supply part is simpler and the design is more reasonable. By injecting compressed air into the emergency water spray tank to change its internal pressure, it can provide high-pressure water to the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun, thereby cooling the flue gas in the quenching tower.

[0012] Furthermore, a flange ball valve and a flange check valve are respectively provided on the water delivery pipeline and the compressed air input pipeline. In this way, by respectively providing a flange ball valve and a flange check valve on the water delivery pipeline and the compressed air input pipeline, it is possible to more conveniently control the water supply and the air supply.

[0013] As an optimization, a water outlet main pipe is connected to the water outlet at the lower end of the emergency water spray tank, and a first branch pipe, a second branch pipe, a third branch pipe and a fourth branch pipe are connected to the water outlet main pipe at intervals along its length direction, and the far ends of the first branch pipe, the second branch pipe, the third branch pipe and the fourth branch pipe are respectively connected to the cooling water input ends of the first auxiliary quenching spray gun, the second auxiliary quenching spray gun, the third auxiliary quenching spray gun and the main quenching spray gun.

[0014] In this way, by setting the first branch pipe, the second branch pipe, the third branch pipe and the fourth branch pipe to supply water to the first auxiliary quenching spray gun, the second auxiliary quenching spray gun, the third auxiliary quenching spray gun and the main quenching spray gun respectively, the mutual influence is smaller and the design is more reasonable.

[0015] Furthermore, a flange gate valve and a pneumatic valve are provided at one end of the water outlet main pipeline close to the emergency water spray tank, so that the on and off of the water outlet main pipeline can be controlled more conveniently.

[0016] Furthermore, a flange check valve and a flange stop valve are provided between the first branch pipe and the second branch pipe on the outlet main pipe, so as to facilitate water supply and realize water supply control.

[0017] Furthermore, a flange stop valve is respectively provided on the second branch pipeline, the third branch pipeline and the fourth branch pipeline.

[0018] Furthermore, at least a portion of the distal ends of the first branch pipeline, the second branch pipeline, the third branch pipeline and the fourth branch pipeline is a hose structure, which makes installation and setting more convenient.

[0019] As an optimization, it also includes a quenching water tank, the input ends of which are connected to the self-integrated water pump and the self-boundary area water supply structure through the first water supply pipe and the second water supply pipe, and the output end of the quenching water tank is connected to the water outlet main pipe through the water supply connection structure.

[0020] In this way, the quench water tank can serve as a make-up water source to supply water to the spray gun, making the design more reliable.

[0021] Furthermore, the water supply connection structure is connected in pairs to the cooling water output pipe at the output end of the quenching water tank.

[0022] On the two pairs of cooling water output pipes and along the liquid flow direction in the cooling water output pipes, flange gate valves, pipe Y-shaped filters, cooling water pumps, flange check valves and flange gate valves are sequentially arranged; and the far ends of the two pairs of cooling water output pipes are connected together to form an output port end and used to connect to the water outlet main pipe. In this way, the water supply connection structure is simpler, and a backup water supply path is arranged, making the entire work more reliable.

[0023] Furthermore, a flange gate valve, a solenoid valve and a flange gate valve are sequentially arranged on the first water supply pipeline, and a first water supply branch pipeline is also arranged. Both ends of the first water supply branch pipeline are respectively connected to the outer positions of the two flange gate valves on the first water supply pipeline, and a flange stop valve is arranged on the first water supply branch pipeline.

[0024] In this way, the structural design is simpler and can be more conveniently controlled.

[0025] Furthermore, a flange gate valve and a solenoid valve are sequentially arranged on the second water supply pipeline, and a second water supply branch pipeline is also arranged. Both ends of the second water supply branch pipeline are respectively connected to the outer sides of the flange gate valve and the solenoid valve on the second water supply pipeline, and a flange stop valve is arranged on the second water supply branch pipeline.

[0026] In this way, the structural design is simpler and can be more conveniently controlled.

[0027] As an optimization, a self-adsorption circulating pump is also included, the output end of the self-adsorption circulating pump is connected to the input end of the quenching water tank, and a flange stop valve is arranged between the output end of the self-adsorption circulating pump and the input end of the quenching water tank.

[0028] In this way, the self-adsorption circulation pump can supply the quenching water tank with alkali solution, which can make the liquid used for flue gas cooling alkaline, better neutralize it, and make subsequent treatment and discharge more convenient.

[0029] As an optimization, a flue gas circulation duct is connected between the flue gas output end and the flue gas input end of the bag filter, and a hot air circulation fan and a hot air heater are arranged on the flue gas circulation duct; and 8-shaped blind plates are respectively arranged at both ends of the flue gas circulation duct.

[0030] In this way, the unqualified flue gas at the output end of the bag filter can be recirculated to the input end and processed again, which can better improve the dust removal quality. The hot air circulation fan and hot air heater installed on the flue gas circulation pipeline can transport and heat the flue gas, so that it can better ensure that it is at an appropriate temperature.

[0031] Furthermore, the liquid input end of the hot air circulation fan is connected to the output end of the self-cooling circulation water pump, and the liquid output end of the hot air circulation fan is connected to the input end of the circulation cooling tower. In this way, the hot air circulation fan can be cooled and the solid waste inside can be discharged to the circulation cooling tower for treatment.

[0032] Furthermore, a flange stop valve is provided between the liquid input end of the hot air circulation fan and the output end of the self-cooling circulation water pump; and a flange gate valve is provided between the liquid output end of the hot air circulation fan and the input end of the circulation cooling tower. This design is more reasonable and can be more convenient to control.

[0033] As an optimization, it also includes an air storage tank for bag dust collector. The input end of the air storage tank for bag dust collector is connected to the instrument air storage tank, and the output ends of the air storage tank for bag dust collector are respectively connected to the air interface at the upper end of the bag dust collector. The output ends of the air storage tank for bag dust collector are also respectively connected to the air cannon at the lower end of the bag dust collector.

[0034] In this way, the gas storage tank for the bag dust collector can better provide gas to the bag dust collector, making it more convenient for the bag dust collector to complete its work.

[0035] Furthermore, the lower ends of the quench tower and the bag filter are each provided with an ash box, so that the dust can be collected and processed centrally.

[0036] Furthermore, the lower end of the quenching tower has a collecting cylinder with one end vertically downwardly arranged, and pneumatic valves are arranged vertically in pairs on the collecting cylinders, and control air pipes are respectively arranged between the air inlet end of the pneumatic valve and the instrument air storage tank, and the control air pipes are respectively provided with internal thread ball valves and electromagnetic valves. In this way, it is more convenient to control the collection and removal of dust at the lower end of the quenching tower.

[0037] As an optimization, a slaked lime bin is arranged above the slaked lime intermediate bin, and the lower end of the slaked lime bin has an output port and is connected to the upper end of the slaked lime intermediate bin; and the air inlet at the upper end of the slaked lime bin and the air inlet at the upper end of the activated carbon bin are respectively connected to the output end of the self-instrument gas storage tank.

[0038] In this way, it is more convenient to remove slaked lime and activated carbon and transport them to the dry reactor for utilization.

[0039] Furthermore, the upper ends of the slaked lime bin and the activated carbon bin are respectively provided with supply ports and are respectively connected to the external slaked lime supply structure and activated carbon supply equipment.

[0040] As an optimization, the slaked lime conveying device includes a first flange pipe arranged horizontally, and the slaked lime output port at the lower end of the slaked lime intermediate bin is connected to the middle part of the first flange pipe, one end of the first flange pipe is connected to the slaked lime input port at the lower end of the dry reactor through a slaked lime conveying pipeline, and two first installation pipes are connected to the other end of the first flange pipe, and slaked lime conveying fans are respectively connected to the outer ends of the two first installation pipes.

[0041] In this way, the slaked lime conveying device has a simpler structure and a more reasonable design, and can better convey the slaked lime to the dry process reactor.

[0042] Furthermore, a butterfly valve is respectively provided on the first installation pipeline.

[0043] Furthermore, the activated carbon conveying device includes a second flange pipe arranged horizontally, and the activated carbon output port at the lower end of the activated carbon bin is connected to the middle part of the second flange pipe. One end of the second flange pipe is connected to the activated carbon input port at the lower end of the dry reactor through an activated carbon conveying pipe. The other end of the second flange pipe is connected to a second installation pipe, and activated carbon conveying fans are respectively connected to the outer ends of the second installation pipes.

[0044] In this way, the activated carbon conveying device has a simpler structure and a more reasonable design, and can better convey the activated carbon to the dry reactor.

[0045] Furthermore, a butterfly valve is respectively provided on the second installation pipeline.

[0046] Furthermore, the dry reactor includes an outer shell that is generally tubular and vertically designed. The lower end of the outer shell is bent downwardly toward one side of the quench tower and connected to the flue gas output end at the lower end of the quench tower. The upper end of the outer shell is bent horizontally and then bent downward to form an inverted U-shaped structure, and the far end is bent horizontally in the direction away from the quench tower to form a flue gas output port. In this way, the design of the dry reactor is more reasonable, and the U-shape can better constrain the internal flue gas, so that only the flue gas that meets the requirements can pass through, and the reaction length is increased, so that the reaction time of the flue gas with slaked lime and activated carbon is longer.

[0047] Furthermore, the number of the bag-type dust collectors is eight and they are arranged in series. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a structural schematic diagram of a specific implementation mode of the present invention.

[0049] Figure 2 yes Figure 1 A locally enlarged schematic diagram of position A in FIG.

[0050] Figure 3 yes Figure 1Schematic diagram of the structure of the quench tower and dry reactor part

[0051] Figure 4 yes Figure 1 Schematic diagram of the structure of the slaked lime intermediate silo and activated carbon silo.

[0052] Figure 5 yes Figure 1 A locally enlarged schematic diagram of position B in FIG. DETAILED DESCRIPTION

[0053] The present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific manner, and therefore cannot be understood as limiting the present invention. The terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0054] like Figures 1 to 5 As shown, the quench dry dust removal system includes a quench tower 1, the upper end of the quench tower is a flue gas input port and is connected to the flue gas output port of the self-waste heat boiler equipment 2, and a cooling spray device 3 is arranged at the upper end of the quench tower and corresponding to the flue gas input port; the lower end of the quench tower is a flue gas output end and is connected to the lower end of the dry reactor 4, the upper end of the dry reactor is a flue gas output end and is connected to the input end of the bag filter 5, and the output end of the bag filter is connected to the input end of the wet scrubbing tower 6; it also includes a slaked lime intermediate bin 7 and an activated carbon bin 8, and the slaked lime output port at the lower end of the slaked lime intermediate bin and the slaked lime input port at the lower end of the dry reactor, as well as the activated carbon output port at the lower end of the activated carbon bin and the activated carbon input port at the lower end of the dry reactor are respectively connected through a slaked lime conveying device and an activated carbon conveying device.

[0055] Thus, in the above system, the flue gas is output from the flue gas output port of the waste heat boiler equipment and enters from the flue gas input port at the upper end of the quenching tower. The flue gas moves from top to bottom in the quenching tower and is cooled by the cooling spray device at the upper end of the quenching tower. Then, it is output from the lower end of the quenching tower and enters the dry reactor. After being treated by the dry reactor, it enters the bag filter for dust removal and finally outputs to the wet scrubber. In the above system, when the flue gas is treated inside the dry reactor, the slaked lime intermediate bin and the activated carbon bin respectively transport slaked lime and activated carbon to the dry reactor through the slaked lime conveying device and the activated carbon conveying device, wherein the slaked lime can react with the flue gas and effectively remove harmful substances such as sulfur dioxide in the flue gas, and the activated carbon can adsorb the waste gas in the flue gas and can also adsorb the sulfur dioxide in the flue gas again, so that after being treated by the above system, the sulfur dioxide in the flue gas can be better treated, the dust removal quality of the flue gas can be improved, and the flue gas can be better purified to meet the emission requirements.

[0056] In this specific embodiment, the cooling spray device 3 includes a horizontally arranged main quenching lance 9, the injection end of which is located directly below the flue gas inlet at the upper end of the quenching tower; it also includes a first auxiliary quenching lance 10 and a second auxiliary quenching lance 11, which are paired left and right and horizontally located below the main quenching lance, and the injection ends of the first auxiliary quenching lance and the second auxiliary quenching lance are arranged relatively to each other; it also includes a vertically arranged third auxiliary quenching lance 12, the injection end of the third auxiliary quenching lance extends vertically to below the main quenching lance, and the third auxiliary quenching lance is horizontally located outside the injection end of the main quenching lance; the cooling water input ends of the main quenching lance, the first auxiliary quenching lance, the second auxiliary quenching lance and the third auxiliary quenching lance are each connected to the water supply part structure.

[0057] In this way, by setting up the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun, and the spatial layout between the four, the flue gas input from the flue gas input port at the upper end of the quenching tower can be better cooled down to prepare for subsequent flue gas treatment. And by setting up multiple spray guns, it is also more convenient to adjust to control the temperature of the flue gas.

[0058] In this specific embodiment, the water supply part structure includes an emergency water spray tank 13, the upper end of the emergency water spray tank has a water inlet and is connected to the self-integrated water pump 14 through a water supply pipe; the upper end of the emergency water spray tank also has a compressed air input port and is connected to the self-compressed air buffer tank 15 through a compressed air input pipe; the lower end of the emergency water spray tank has a water outlet and is connected to the cooling water input ends of the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun through a water outlet pipe.

[0059] In this way, the structure of the water supply part is simpler and the design is more reasonable. By injecting compressed air into the emergency water spray tank to change its internal pressure, it can provide high-pressure water to the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun, thereby cooling the flue gas in the quenching tower.

[0060] Specifically, the water pipeline and the compressed air input pipeline are respectively provided with a flange ball valve 16 and a flange check valve 17. In this way, by respectively providing a flange ball valve and a flange check valve on the water pipeline and the compressed air input pipeline, it is possible to more conveniently control the water supply and the air supply.

[0061] In this specific embodiment, a water outlet main pipe 18 is connected to the water outlet at the lower end of the emergency water spray tank, and a first branch pipe 19, a second branch pipe 20, a third branch pipe 21 and a fourth branch pipe 22 are connected to the water outlet main pipe at intervals along its length direction, and the far ends of the first branch pipe, the second branch pipe, the third branch pipe and the fourth branch pipe are respectively connected to the cooling water input ends of the first auxiliary quenching spray gun, the second auxiliary quenching spray gun, the third auxiliary quenching spray gun and the main quenching spray gun.

[0062] In this way, by setting the first branch pipe, the second branch pipe, the third branch pipe and the fourth branch pipe to supply water to the first auxiliary quenching spray gun, the second auxiliary quenching spray gun, the third auxiliary quenching spray gun and the main quenching spray gun respectively, the mutual influence is smaller and the design is more reasonable.

[0063] Specifically, a flange gate valve 23 and a pneumatic valve 24 are provided at one end of the water outlet main pipeline close to the emergency water spray tank. This makes it more convenient to control the on-off of the water outlet main pipeline.

[0064] Specifically, a flange check valve and a flange stop valve are provided between the first branch pipeline and the second branch pipeline on the water outlet main pipeline, so as to facilitate water supply and realize water supply control.

[0065] Specifically, a flange stop valve is respectively arranged on the second branch pipeline, the third branch pipeline and the fourth branch pipeline.

[0066] Specifically, at least a portion of the distal ends of the first branch pipeline, the second branch pipeline, the third branch pipeline, and the fourth branch pipeline is a hose structure, which makes installation and setting more convenient.

[0067] In this specific embodiment, it also includes a quenching water tank 25, the input end of the quenching water tank is connected to the self-integrated water pump and the self-boundary area water supply structure through the first water supply pipe 26 and the second water supply pipe 27, and the output end of the quenching water tank is connected to the water outlet main pipeline through the water supply connection structure.

[0068] In this way, the quench water tank can serve as a make-up water source to supply water to the spray gun, making the design more reliable.

[0069] Specifically, the water supply connection structure is connected in pairs to the cooling water output pipe at the output end of the quenching water tank.

[0070] On the two pairs of cooling water output pipes 28 and along the liquid flow direction in the cooling water output pipes, flange gate valves, pipe Y-shaped filters 29, cooling water pumps 30, flange check valves and flange gate valves are sequentially arranged; and the far ends of the two pairs of cooling water output pipes are connected together to form an output port end and are used to connect to the water outlet main pipe. In this way, the water supply connection structure is simpler, and a backup water supply path is arranged, making the entire work more reliable.

[0071] Specifically, a flange gate valve, a solenoid valve and a flange gate valve are sequentially arranged on the first water supply pipeline, and a first water supply branch pipeline is also arranged. Both ends of the first water supply branch pipeline are respectively connected to the outer sides of the two flange gate valves on the first water supply pipeline, and a flange stop valve is arranged on the first water supply branch pipeline.

[0072] In this way, the structural design is simpler and can be more conveniently controlled.

[0073] Specifically, a flange gate valve and a solenoid valve are sequentially arranged on the second water supply pipeline, and a second water supply branch pipeline is also arranged. Both ends of the second water supply branch pipeline are respectively connected to the outer sides of the flange gate valve and the solenoid valve on the second water supply pipeline, and a flange stop valve is arranged on the second water supply branch pipeline.

[0074] In this way, the structural design is simpler and can be more conveniently controlled.

[0075] In this specific embodiment, a self-adsorption circulation pump 31 is further included, the output end of the self-adsorption circulation pump is connected to the input end of the quenching water tank, and a flange stop valve is provided between the output end of the self-adsorption circulation pump and the input end of the quenching water tank.

[0076] In this way, the self-adsorption circulation pump can supply the quenching water tank with alkali solution, which can make the liquid used for flue gas cooling alkaline, better neutralize it, and make subsequent treatment and discharge more convenient.

[0077] In this specific embodiment, a flue gas circulation duct 32 is connected between the flue gas output end and the flue gas input end of the bag filter, and a hot air circulation fan 33 and a hot air heater 34 are arranged on the flue gas circulation duct; and an 8-shaped blind plate 35 is respectively arranged at both ends of the flue gas circulation duct.

[0078] In this way, the unqualified flue gas at the output end of the bag filter can be recirculated to the input end and processed again, which can better improve the dust removal quality. The hot air circulation fan and hot air heater installed on the flue gas circulation pipeline can transport and heat the flue gas, so that it can better ensure that it is at an appropriate temperature.

[0079] Specifically, the liquid input end of the hot air circulation fan is connected to the output end of the self-cooling circulating water pump 36, and the liquid output end of the hot air circulation fan is connected to the input end of the circulating cooling tower 37. In this way, the hot air circulation fan can be cooled and the solid waste inside can be discharged to the circulating cooling tower for treatment.

[0080] Specifically, a flange stop valve is provided between the liquid input end of the hot air circulation fan and the output end of the self-cooling circulation water pump; a flange gate valve is provided between the liquid output end of the hot air circulation fan and the input end of the circulation cooling tower. This design is more reasonable and can be more convenient to control.

[0081] In this specific embodiment, it also includes an air tank 38 for the bag dust collector. The input end of the air tank for the bag dust collector is connected to the instrument air tank, and the output end of the air tank for the bag dust collector is respectively connected to the air interface at the upper end of the bag dust collector. The output end of the air tank for the bag dust collector is also respectively connected to the air cannon at the lower end of the bag dust collector.

[0082] In this way, the gas storage tank for the bag dust collector can better provide gas to the bag dust collector, making it more convenient for the bag dust collector to complete its work.

[0083] Specifically, the lower ends of the quench tower and the bag filter are each provided with an ash box 39. In this way, dust can be collected and processed centrally.

[0084] Specifically, the lower end of the quench tower has a collecting cylinder 40 with one end vertically downwardly arranged, and pneumatic valves are vertically arranged in pairs on the collecting cylinders, and control air pipes are respectively arranged between the air inlet end of the pneumatic valve and the instrument air storage tank, and the control air pipes are respectively provided with internal thread ball valves and electromagnetic valves. In this way, it is more convenient to control the collection and removal of dust at the lower end of the quench tower.

[0085] In this specific embodiment, a slaked lime bin 41 is arranged above the slaked lime intermediate bin, and the lower end of the slaked lime bin has an output port and is connected to the upper end of the slaked lime intermediate bin; and the air inlet at the upper end of the slaked lime bin and the air inlet at the upper end of the activated carbon bin are respectively connected to the output end of the self-instrument gas storage tank.

[0086] In this way, it is more convenient to remove slaked lime and activated carbon and transport them to the dry reactor for utilization.

[0087] Specifically, the upper ends of the slaked lime silo and the activated carbon silo are respectively provided with supply ports and are respectively connected to the external slaked lime supply structure and activated carbon supply equipment.

[0088] In this specific embodiment, the slaked lime conveying device includes a horizontally arranged first flange pipe 42, and the slaked lime output port at the lower end of the slaked lime intermediate bin is connected to the middle of the first flange pipe. One end of the first flange pipe is connected to the slaked lime input port at the lower end of the dry reactor through a slaked lime conveying pipeline 43, and two first installation pipelines 44 are connected to the other end of the first flange pipe, and slaked lime conveying fans 45 are respectively connected to the outer ends of the two first installation pipelines.

[0089] In this way, the slaked lime conveying device has a simpler structure and a more reasonable design, and can better convey the slaked lime to the dry process reactor.

[0090] Specifically, a butterfly valve is respectively arranged on the first installation pipeline.

[0091] Specifically, the activated carbon conveying device includes a horizontally arranged second flange pipe 46, and the activated carbon output port at the lower end of the activated carbon bin is connected to the middle of the second flange pipe. One end of the second flange pipe is connected to the activated carbon input port at the lower end of the dry reactor through an activated carbon conveying pipe 47, and the other end of the second flange pipe is connected to a second installation pipe 48, and activated carbon conveying fans 49 are respectively connected to the outer ends of the second installation pipes.

[0092] In this way, the activated carbon conveying device has a simpler structure and a more reasonable design, and can better convey the activated carbon to the dry reactor.

[0093] Specifically, a butterfly valve is respectively provided on the second installation pipeline.

[0094] Specifically, the dry reactor includes an outer shell that is generally cylindrical and vertically designed. The lower end of the outer shell is bent downwardly toward one side of the quench tower and connected to the flue gas output end at the lower end of the quench tower. The upper end of the outer shell is bent horizontally and then bent downward to form an inverted U-shaped structure, and the far end is bent horizontally in the direction away from the quench tower to form a flue gas output port. In this way, the design of the dry reactor is more reasonable, and the U shape can better constrain the internal flue gas, so that only the flue gas that meets the requirements can pass through, and the reaction length is increased, so that the reaction time of the flue gas with slaked lime and activated carbon is longer.

[0095] Specifically, the bag dust collectors are eight arranged in series.

[0096] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A quenching dry dust removal system, comprising a quenching tower, the upper end of which is a flue gas input port and is connected to the flue gas output port of the waste heat boiler equipment, and a cooling spray device is provided at the upper end of the quenching tower and corresponding to the flue gas input port; the lower end of the quenching tower is a flue gas output end and is connected to the lower end of the dry reactor, the upper end of the dry reactor is a flue gas output end and is connected to the input end of a bag filter, and the output end of the bag filter is connected to the input end of a wet scrubber; characterized in that: It also includes a slaked lime intermediate bin and an activated carbon bin, wherein the slaked lime output port at the lower end of the slaked lime intermediate bin and the slaked lime input port at the lower end of the dry process reactor, and the activated carbon output port at the lower end of the activated carbon bin and the activated carbon input port at the lower end of the dry process reactor are connected respectively via a slaked lime conveying device and an activated carbon conveying device; The cooling spray device includes a horizontally arranged main quenching spray gun, the injection end of which is located directly below the flue gas inlet at the upper end of the quenching tower; it also includes a first auxiliary quenching spray gun and a second auxiliary quenching spray gun which are arranged horizontally below the main quenching spray gun in pairs on the left and right, and the injection ends of the first auxiliary quenching spray gun and the second auxiliary quenching spray gun are arranged opposite to each other; it also includes a vertically arranged third auxiliary quenching spray gun, the injection end of which extends vertically to below the main quenching spray gun, and the third auxiliary quenching spray gun is horizontally located outside the injection end of the main quenching spray gun; the cooling water input ends of the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun are respectively connected to the water supply part structure; The water supply part structure includes an emergency water spray tank, the upper end of which has a water inlet and is connected to the self-integrated water pump through a water delivery pipeline; the upper end of the emergency water spray tank also has a compressed air input port and is connected to the self-compressed air buffer tank through a compressed air input pipeline; the lower end of the emergency water spray tank has a water outlet and is connected to the cooling water input ends of the main quenching spray gun, the first auxiliary quenching spray gun, the second auxiliary quenching spray gun and the third auxiliary quenching spray gun through the water outlet pipeline; A water outlet main pipe is connected to the water outlet at the lower end of the emergency water spray tank, and a first branch pipe, a second branch pipe, a third branch pipe and a fourth branch pipe are connected to the water outlet main pipe at intervals along its length direction, and the distal ends of the first branch pipe, the second branch pipe, the third branch pipe and the fourth branch pipe are respectively connected to the cooling water input ends of the first auxiliary quenching spray gun, the second auxiliary quenching spray gun, the third auxiliary quenching spray gun and the main quenching spray gun; It also includes a quenching water tank, the input end of which is connected to the self-integrated water pump and the self-boundary area water supply structure through the first water supply pipe and the second water supply pipe, and the output end of the quenching water tank is connected to the water outlet main pipe through the water supply connection structure; the far ends of the first branch pipe, the second branch pipe, the third branch pipe and the fourth branch pipe have at least a part of the length section as a hose structure; the water supply connection structure is connected in pairs to the cooling water output pipe at the output end of the quenching water tank, and flange gate valves, pipeline Y-shaped filters, cooling water pumps, flange check valves and flange gate valves are sequentially arranged on the two pairs of cooling water output pipes and along the liquid flow direction in the cooling water output pipes; and the pairs are arranged in pairs. The far ends of the two cooling water output pipes are connected together to form an output port and are used to be connected to the water outlet main pipe; a flange gate valve, a solenoid valve and a flange gate valve are sequentially arranged on the first water supply pipe, and a first water supply branch pipe is also arranged, and the two ends of the first water supply branch pipe are respectively connected to the outer positions of the two flange gate valves on the first water supply pipe, and a flange stop valve is arranged on the first water supply branch pipe; a flange gate valve and a solenoid valve are sequentially arranged on the second water supply pipe, and a second water supply branch pipe is also arranged, and the two ends of the second water supply branch pipe are respectively connected to the outer positions of the flange gate valve and the solenoid valve on the second water supply pipe, and a flange stop valve is arranged on the second water supply branch pipe; It also includes a self-adsorption circulation pump, the output end of the self-adsorption circulation pump is connected to the input end of the quenching water tank, and a flange stop valve is arranged between the output end of the self-adsorption circulation pump and the input end of the quenching water tank.

2. The rapid cooling dry dust removal system according to claim 1, characterized in that: A flue gas circulation duct is connected between the flue gas output end and the flue gas input end of the bag filter, and a hot air circulation fan and a hot air heater are arranged on the flue gas circulation duct; and 8-shaped blind plates are respectively arranged at both ends of the flue gas circulation duct.

3. The rapid cooling dry dust removal system according to claim 2, characterized in that: It also includes an air storage tank for a bag dust collector, the input end of the air storage tank for the bag dust collector is connected to the self-instrument air storage tank, the output ends of the air storage tank for the bag dust collector are respectively connected to the air interface at the upper end of the bag dust collector, and the output ends of the air storage tank for the bag dust collector are also respectively connected to the air cannon at the lower end of the bag dust collector.

4. The rapid cooling dry dust removal system according to claim 1, characterized in that: A slaked lime bin is arranged above the slaked lime intermediate bin, the lower end of which has an output port and is connected to the upper end of the slaked lime intermediate bin; and the air inlet at the upper end of the slaked lime bin and the air inlet at the upper end of the activated carbon bin are respectively connected to the output end of the self-instrument gas storage tank.

5. The rapid cooling dry dust removal system according to claim 4, characterized in that: The slaked lime conveying device includes a first flange pipe arranged horizontally, and the slaked lime output port at the lower end of the slaked lime intermediate bin is connected to the middle of the first flange pipe. One end of the first flange pipe is connected to the slaked lime input port at the lower end of the dry reactor through a slaked lime conveying pipeline. Two first installation pipelines are connected to the other end of the first flange pipe, and slaked lime conveying fans are respectively connected to the outer ends of the two first installation pipelines.

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