CN222034072U - Equipment for dust removal of flue gas from industrial furnaces - Google Patents
Equipment for dust removal of flue gas from industrial furnaces Download PDFInfo
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- CN222034072U CN222034072U CN202323405749.8U CN202323405749U CN222034072U CN 222034072 U CN222034072 U CN 222034072U CN 202323405749 U CN202323405749 U CN 202323405749U CN 222034072 U CN222034072 U CN 222034072U
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- 239000003546 flue gas Substances 0.000 title claims abstract description 191
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 110
- 239000010865 sewage Substances 0.000 claims abstract description 106
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- Treating Waste Gases (AREA)
Abstract
The utility model provides equipment for removing dust from flue gas of an industrial furnace, which is used for relating to the technical field of environmental protection. The system comprises a clear water system, a sewage system and a dust removal reaction kettle, wherein the dust removal reaction kettle comprises a plurality of dust removal devices; the clear water system provides spraying water for the dust removal reaction kettle; under the spraying action, the high-temperature flue gas flows into a first dust removing device to cool and remove dust; the flue gas passing through the first dust removing device continuously flows to the second dust removing device, cooling and dust removing are repeatedly carried out until the flue gas flows to the last dust removing device, and the flue gas treated by the plurality of dust removing devices is discharged by the smoke discharging device; and sewage passing through the dust removal reaction kettle is subjected to water-sewage separation through a sewage system. The device can effectively reduce the temperature of high-temperature flue gas, simultaneously dissolve smoke dust and pollutants in the flue gas, and finally realize the effect of purifying the smoke dust.
Description
Technical Field
The utility model relates to the technical field of environmental protection, in particular to equipment for dust removal of industrial furnace flue gas.
Background
The industrial furnace is used for heating, reacting or sintering various raw materials at high temperature, and is widely applied to the production process of metal smelting, petrochemical industry and other industries. Because the flue gas temperature is too high, the cloth bag can be damaged, the dust removal effect and the service life are affected, and the conventional cloth bag dust remover cannot be directly used for treatment.
With the improvement of environmental protection regulations and public consciousness, the importance of the flue gas dust removal technology of the industrial kiln is more and more prominent, and the equipment for flue gas dust removal of the industrial kiln can improve the production safety and reduce the pollution of the flue gas to the environment, thereby playing an important role in improving the air quality.
Disclosure of utility model
The utility model aims to provide equipment for removing dust from flue gas of an industrial furnace, which solves the problem of burning a dust removing cloth bag at high temperature, effectively reduces the temperature of the flue gas and improves the dust removing effect.
According to an aspect of the utility model, there is provided an apparatus for dust removal from flue gas of an industrial kiln, the system comprising a clean water system, a sewage system and a dust removal reaction vessel, wherein:
The dust removing reaction kettle comprises a plurality of dust removing devices which are respectively arranged in the dust removing reaction kettle from top to bottom, and the flue gas passing through the previous dust removing device continuously flows to the next dust removing device so as to repeatedly cool and remove dust until the flue gas flows to the last dust removing device;
The clean water system provides spraying water for the dust removal reaction kettle, so that the temperature of the high-temperature flue gas flowing in is reduced and dust removed through a spraying effect;
the sewage system collects sewage passing through the dust removal reaction kettle and performs sewage-sewage separation.
According to some embodiments, the dust removing device includes:
the cooling spray system is used for mixing the water sheet sprayed by the cooling spray system with the flue gas;
a dust removing umbrella for changing the falling direction of sewage mixed by the water sheet and the flue gas;
The flue gas accelerator is used for enabling the flue gas subjected to dust removal treatment to flow to a next layer of dust removal umbrella;
The annular sewage pool is arranged below the dust removing umbrella and is used for collecting sewage falling from the dust removing umbrella.
According to some embodiments, the cooling spray system includes an annular nozzle.
According to some embodiments, the water outlet of the annular nozzle is adjustable.
According to some embodiments, the clean water system comprises a clean water feed pump, a dust fall pipeline, wherein:
and the clean water supply pump supplies water to the cooling spray system through the dust fall pipeline.
According to some embodiments, the sewage system comprises a sewage conduit and a sewage treatment tank, the annular sewage tank being connected to the sewage treatment tank by the sewage conduit.
According to some embodiments, the flue gas accelerator is disposed below a central aperture of the annular sump.
According to some embodiments, the flue gas accelerator comprises a trapezoidal barrel having a flue gas inlet diameter that is greater than a flue gas outlet diameter of the trapezoidal barrel.
According to some embodiments, the device further comprises a smoke exhausting device and a smoke pipeline, wherein the smoke exhausting device is communicated with the dust removing reaction kettle through the smoke pipeline, so that dust-removed smoke is exhausted.
According to some embodiments, the device for removing dust from flue gas of the industrial furnace further comprises a sludge press filter for separating water from sewage in the sewage treatment tank, and the separated clean water is recycled.
According to the equipment for removing dust from the flue gas of the industrial furnace, the high-temperature flue gas is subjected to annular spraying treatment through the dust removing reaction kettle, so that the dust is dissolved in the water body, and the high-efficiency dust removal is achieved while the temperature is reduced.
According to the embodiment of the utility model, the equipment for removing dust from the flue gas of the industrial furnace can be used for cooling and removing dust from high-temperature flue gas in multiple stages, so that the environmental-friendly emission requirement is met. Meanwhile, the sewage separated by the dust removing umbrella is collected to a sewage treatment pool at the bottom for mud-water separation, so that the utilization rate of water resources is further improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the utility model as claimed.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are required to be used in the description of the embodiments will be briefly described below.
Fig. 1 shows a flow chart of the operation of an industrial kiln flue gas dust removal device according to an example embodiment.
Fig. 2 shows a structural composition diagram of an industrial furnace flue gas dust removal apparatus according to an example embodiment.
Fig. 3 shows a schematic view of a dust removing device of an industrial furnace flue gas dust removing apparatus according to an example embodiment.
Fig. 4 shows a schematic top view of a dust removal device of an industrial furnace flue gas dust removal apparatus according to an example embodiment.
Fig. 5 shows a schematic view of a flue gas accelerator of a flue gas dust removal device of an industrial furnace according to an example embodiment.
Fig. 6 shows a schematic structural view of an industrial furnace flue gas dust removal apparatus according to an example embodiment.
Fig. 7 shows a schematic plan view of an industrial kiln flue gas dust removal device according to an example embodiment.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar parts, and thus a repetitive description thereof will be omitted.
Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the utility model. One skilled in the relevant art will recognize, however, that the utility model may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the utility model.
The block diagrams depicted in the figures are merely functional entities and do not necessarily correspond to physically separate entities. That is, the functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different networks and/or processor devices and/or microcontroller devices.
The flow diagrams depicted in the figures are exemplary only, and do not necessarily include all of the elements and operations/steps, nor must they be performed in the order described. For example, some operations/steps may be decomposed, and some operations/steps may be combined or partially combined, so that the order of actual execution may be changed according to actual situations.
It will be understood that, although the terms first, second, third, etc. may be used herein to describe various components, these components should not be limited by these terms. These terms are used to distinguish one element from another element. Accordingly, a first component discussed below could be termed a second component without departing from the teachings of the present inventive concept. As used herein, the term "and/or" includes any one of the associated listed items and all combinations of one or more.
The user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, presented data, etc.) related to the present utility model are information and data authorized by the user or fully authorized by each party, and the collection, use and processing of related data is required to comply with the relevant laws and regulations and standards of the relevant country and region, and is provided with corresponding operation entries for the user to select authorization or rejection.
Those skilled in the art will appreciate that the drawings are schematic representations of example embodiments and that the modules or flows in the drawings are not necessarily required to practice the utility model and therefore should not be taken to limit the scope of the utility model.
In the related technical field of flue gas dust removal, the use of bag dust removal to separate out particulate matters in flue gas is a common dust removal technology. However, under the condition of high-temperature flue gas, the filter bag material is easy to damage or age, the dust removal effect is affected, and the filter bag is easy to burn under the high-temperature environment, so that potential safety hazards exist. In order to reduce the temperature of the flue gas, a plurality of enterprises add a flue gas cooler before the bag-type dust removal stage, but the flue gas cooler is added in the flue gas dust removal process to increase the system resistance and increase the power of a fan, thereby increasing the production running cost.
Therefore, the utility model provides equipment for removing dust from flue gas of an industrial furnace, which solves the problem of dust removal treatment work of high-temperature flue gas, and is particularly suitable for industries such as steel plants, cement plants, refractory material plants, lime furnaces and the like which cannot use bag dust removal. According to the example embodiment, when the high-temperature flue gas is sprayed through the clear water system to achieve the cooling effect, the smoke dust in the flue gas is dissolved in water, the flue gas and the sewage are separated through the dust removing device, and the flue gas finally discharged is guaranteed to meet the environmental protection requirement through repeated dust removal and cooling of the multi-layer dust removing device.
Exemplary embodiments of the present utility model are described below with reference to the accompanying drawings.
Fig. 1 shows a flow chart of the operation of an industrial kiln flue gas dust removal device according to an example embodiment.
Referring to fig. 1, the high temperature flue gas generated in the production process is treated by the flue gas dust removal equipment of the industrial furnace, and the treated flue gas is discharged by the smoke discharging device after the temperature reduction and dust removal of the clean water system, the dust removal and filtration of the dust removal device and the water-sewage separation of the sewage system are required.
The high-temperature flue gas firstly enters the clean water system to be primarily cooled and dedusted, the high-temperature flue gas is mixed with sprayed water mist, so that dust particles in the flue gas are condensed due to contact with wet water drops to form larger particles, the subsequent dedusting process is facilitated, and meanwhile, the evaporation of water is also beneficial to absorbing heat in the flue gas, so that the flue gas temperature is reduced.
In S101, the high temperature flue gas flows into the dust removing device.
According to an example embodiment, the dust removing device mainly performs dust removing and filtering functions in the flue gas dust removing equipment of the industrial furnace, and high-temperature flue gas flows into the dust removing device to perform flue gas dust removing treatment. The high-temperature flue gas contacts with the water sprayed by the dust removing device, so that dust particles are dissolved in liquid drops or captured by a liquid film, and the dust removing effect is realized.
In S103, the clean water system provides spray water to the dust removal device.
In the flue gas dust removal equipment of the industrial furnace, the clean water system provides spraying water for the dust removal device, and the sprayed water can not only effectively reduce the temperature of high-temperature flue gas, but also enable smoke dust in the flue gas to be dissolved into water, so that the effect of dust removal and temperature reduction is achieved.
The clear water system pumps clear water out of the clear water tank or the clear water tank through the clear water pump and pressurizes the clear water to be sent into the clear water pipeline, and the flow and the pressure of the clear water pump can be adjusted according to actual needs so as to meet different requirements of the spraying system. The clean water system includes a clean water basin for storing sufficient clean water sources, which may be from tap water, groundwater, and/or recycled treated wastewater, etc.
Clear water is conveyed to the annular nozzle through the clear water pipeline, and then water mist or water sheets are sprayed out of the annular nozzle, so that the design and the number of the nozzles can influence the spraying effect, such as atomization degree, coverage area and the like. For example, a ring nozzle disclosed in chinese patent application 202221890150.0 may be employed, but the scheme of the present application is not limited thereto.
In S105, the high-temperature flue gas is subjected to first-stage dust removal and cooling under the spraying effect.
According to the example embodiment, the high-temperature flue gas firstly enters the clean water system to be primarily cooled and dedusted, and the flue gas is mixed with the water mist sprayed out by the annular nozzle, so that dust particles in the flue gas are condensed due to contact with wet water drops, larger particles are formed, and the subsequent dedusting process is facilitated. Meanwhile, the evaporation of water is also helpful for absorbing heat in the flue gas and reducing the temperature of the flue gas.
Because the industrial furnace flue gas dust removal equipment comprises a plurality of dust removal devices, the first dust removal devices and the second dust removal devices … … are sequentially arranged from top to bottom, and high-temperature flue gas firstly flows into the first dust removal devices in the industrial furnace flue gas dust removal equipment, and the first-stage cooling dust removal is performed under the spraying effect. The dust removing umbrellas are arranged in the dust removing reaction kettle in a multi-layer mode, a certain distance is reserved between every two layers of dust removing umbrellas, high-temperature flue gas enters from the inlet at the top, and passes through each layer of dust removing umbrellas from top to bottom in sequence. When the high-temperature flue gas enters the first dust removing device, the high-temperature flue gas firstly contacts with a water film above the dust removing umbrella, and the temperature of the flue gas is reduced by utilizing the evaporation heat absorption of water. Meanwhile, smoke particles can be attached to the water film, so that the first stage dust removal and cooling are realized.
In S107, the flue gas subjected to the first stage cooling and dust removal continues to perform the second stage cooling and dust removal, and the cooling and dust removal actions are repeated until the flue gas flows through the last stage cooling and dust removal.
In the flue gas dust removal equipment of the industrial furnace, the flue gas after the first-stage cooling and dust removal passes through the flue gas accelerator below the first-layer dust removal umbrella, the flow state of the flue gas can be changed by the flue gas accelerator, the contact area and time of the flue gas and the dust removal umbrella are increased, the cooling and dust removal effect is improved, and the flue gas passing through the accelerator continuously flows downwards through the second dust removal device to be subjected to cooling and dust removal treatment again. Similarly, the flue gas also passes through the third dust removing device and the fourth dust removing device … … until reaching the last layer of dust removing device, and cooling and dust removing are repeatedly performed.
The flue gas flowing out of the first dust collector enters the second dust collector, the flue gas subjected to the first-stage cooling and dust collection is subjected to the second-stage cooling and dust collection, the flue gas flowing out of the second dust collector continuously flows into the dust collector of the next layer, the cooling and dust collection operation is repeatedly performed under the action of the spraying and dust collector until the flue gas flows to the dust collector of the last layer, and the dust collection treatment flow of the whole system is completed after the last-stage cooling and dust collection operation is performed. And S111, discharging the treated flue gas, cooling the flue gas subjected to multiple times of cooling and dust removal to a temperature suitable for discharge, removing most dust, and discharging the purified flue gas by a smoke discharging device.
In S109, the sewage passing through the dust removing device is separated into water and sewage by the sewage system.
And after cooling and dedusting in each stage, part of sewage is generated, and the sewage flowing out of the dedusting device is converged into a sewage treatment tank through a sewage pipeline. The sewage after cooling and dedusting is produced in each dedusting stage, flows into the annular sewage tank in each layer of dedusting device, and then is collected into the sewage treatment tank through the sewage pipeline.
The sewage treatment tank is arranged at the bottommost part of the whole system and is used for storing sewage, the sewage system also comprises a sludge filter press, and the sewage in the sewage treatment tank is separated through the compression operation of the sludge filter press.
The sludge press filter is a device for treating precipitated substances in a sewage treatment tank, and according to some embodiments, when sewage in the sewage treatment tank is accumulated to a certain degree, the sludge press filter is started to work, a pressing button of the sludge press filter is pressed down, an oil cylinder is advanced, a pressure gauge reaches a set working value, and the sludge press filter is automatically stopped and is ready. In the operation process of the sludge press filter, the sewage is firstly conveyed into a feeding cabin in the machine and is compressed by an oil cylinder, and the oil cylinder pushes a roller to move downwards to squeeze the sewage so as to extrude water in the sewage and solidify precipitated substances into blocks. After the squeezing is completed, the drainage valve is opened, the squeezing pump is closed, the whole squeezing process is completed, and the drained water can be recycled.
In the example embodiment, the sludge filter press is mainly used for separating sewage generated in the dust removal stage of the flue gas dust removal equipment of the industrial furnace from the sewage at the bottom of the sewage treatment tank, so that the sewage treatment is more efficient and environment-friendly, and water resources are saved.
Fig. 2 shows a structural composition diagram of an industrial furnace flue gas dust removal apparatus according to an example embodiment.
According to an exemplary embodiment, most of high-temperature flue gas needs to be treated by the industrial furnace, and the industrial furnace flue gas dust removal device shown in fig. 2 is specially designed for treating the high-temperature flue gas.
Referring to fig. 2, the industrial furnace flue gas dust removal device comprises a dust removal reaction kettle 101, a clean water system 201 and a sewage system 301. The high-temperature flue gas generated by the industrial furnace is subjected to dust removal and temperature reduction through the dust removal reaction kettle 101, and finally the treated flue gas is discharged by the smoke discharging device 401.
According to an exemplary embodiment, the dust removing reaction kettle 101 includes a multi-layer dust removing device, herein, a five-layer dust removing device is exemplified, and a first dust removing device 111, a second dust removing device 112, and up to a fifth dust removing device 115 of the last layer are sequentially disposed from top to bottom.
According to an example embodiment, the clean water system 201 includes a clean water feed pump 222 and six dust fall pipes 211-216; the clean water supply pump 222 supplies water to the multi-layer dust removing device in the dust removing reaction kettle 101 through dust removing pipelines 211 to 216. The clean water supply pump 222 is made of acid and alkali resistant materials, and the clean water supply pump 222 simultaneously supplies water to the six dust settling pipelines 211 to 216, because the industrial kiln flue gas dust removal equipment needs to treat various liquids possibly containing acidic or alkaline substances, and the six dust settling pipelines 211 to 216 are made of acid and alkali resistant materials.
And an electronic flow valve is arranged at the outlet of each dust fall pipeline, and the flow of water output is regulated by the electronic flow valve. A clear water working shaft 222 can supply water for many dust fall pipelines simultaneously, the quantity and the area of equipment have been reduced, work efficiency has been improved, through installing electronic flow valve in every pipeline exit, the water yield of every washing pipeline can be adjusted accurately according to actual demand, the waste of water resource has been avoided when guaranteeing the cleaning performance, electronic flow valve has good stability and reliability, can keep stable performance under long-term continuous operation's circumstances, extension equipment life, through accurate control flow, can reduce unnecessary energy consumption, help reducing running cost and environmental protection emission.
According to an exemplary embodiment, sewage system 301 includes a sewage conduit 321, a sewage flow valve 322, an underlying sewage treatment tank 323, and five annular tanks 311-315. The annular lagoons 311 to 315 are connected to a bottom lagoons 323 through the lagoons 321.
Taking the first stage of cooling and dedusting as an example, high-temperature flue gas enters the dedusting reaction kettle 101, firstly flows through the first dedusting device 111, clean water sprayed by the dust fall pipeline 211 is mixed with the high-temperature flue gas, the cooling effect is achieved, meanwhile, smoke dust in the flue gas is dissolved in water, the mixture of the flue gas and the water is treated by the first dedusting device 111, and sewage flows out of the annular sewage tank 311 and flows into the sewage treatment tank 323 through the sewage pipeline 321; the flue gas treated by the first dust removing device 111 flows into the second dust removing device 112, the clean water sprayed by the dust removing pipeline 213 is mixed with the flue gas treated by the first dust removing device 111, the residual smoke dust in the flue gas is continuously dissolved in the water, the mixture of the flue gas and the water is treated by the second dust removing device 112, and the sewage subjected to the second-stage cooling and dust removal flows out of the annular sewage tank 313 and flows into the sewage treatment tank 323 through the sewage pipeline 321; the structure of the lower layers of dust removing devices in the dust removing reaction kettle is the same as that of the first dust removing device 111 and the second dust removing device 112, the flue gas is repeatedly subjected to cooling and dust removing treatment, and finally the flue gas flowing out through the fifth dust removing device 115 is discharged through the smoke discharging device 401. The schematic structure of the flue gas dust removal device of the industrial furnace is shown in fig. 6.
In this example embodiment, the dirt such as smoke and dust in the flue gas has dissolved in the aquatic and has passed through multilayer dust collector and separated to sewage treatment pond, the flue gas of fume extractor exhaust is the flue gas after the dust removal of cooling many times. In addition, in the production process of the industrial kiln, the flue gas containing harmful gases such as chlorine, sulfur, mercury, lead and the like can absorb the chlorine-containing gases by adding alkaline solution (such as lime milk, sodium carbonate solution and the like) in the cooling and dust removing process of the dust removing reaction kettle, the sulfur-containing gases are neutralized by spraying desulfurization dust removing liquid, and the mercury vapor and the lead vapor in the flue gas are captured by injecting adsorbent such as activated carbon powder or metal oxide and the like by adopting a chemical absorption method or an adsorption method.
And a smoke emission data detection probe is arranged at a smoke outlet and is connected with an environment-friendly platform computer, so that the discharged smoke is ensured to meet the environment-friendly requirement. The detection probe is specially used for measuring smoke components and parameters, is in direct contact with smoke, can rapidly and accurately acquire real-time data, can monitor the concentration of various harmful substances in the smoke, such as sulfur oxides, nitrogen oxides, particulate matters and the like, and can transmit the collected data to the environment-friendly platform computer in a wireless mode. Through the flue gas emission data detection probe and the environment-friendly platform computer, enterprises can monitor the flue gas emission condition in real time, and ensure that the flue gas emission data detection probe meets the requirements of environmental regulations. Meanwhile, the government environmental protection department can also monitor the fume emission of enterprises remotely through accessing the environmental protection platform of the enterprises, thereby realizing more effective supervision.
Fig. 3 shows a schematic view of a dust removing device of an industrial furnace flue gas dust removing apparatus according to an example embodiment.
As described above, the dust removing reaction kettle 101 in the flue gas dust removing device of the industrial furnace shown in fig. 2 comprises five layers of dust removing devices, and the dust removing devices 111-115 have the same structure and are arranged at different positions. Taking the first dust removing device 111 as an example, referring to fig. 3, the respective structural components of the dust removing device are shown.
According to an example embodiment, the first dust removing device 111 includes a dust fall pipe 211, an annular nozzle 213, a dust removing umbrella 121, a flue gas accelerator 123, and an annular sump 311. The annular nozzle 213 is arranged above the dust removing umbrella 121, the annular sewage tank 311 is vertically arranged below the dust removing umbrella 121, the flue gas accelerator 123 is arranged at the center of the annular sewage tank 311, and the top view of the first dust removing device 111 is shown in fig. 4.
Wherein, dust fall pipeline 211 with annular nozzle 213 constitutes the cooling and sprays the system, and cooling sprays system one end and links to each other with clean water system, and the water source of cooling and spraying the system provides through clear water working pump 222, and the other end of cooling and spraying the system is annular nozzle 213, by annular nozzle 213 is to the flue gas injection water sheet, annular nozzle's delivery port is adjustable. The high temperature flue gas flowing into the first dust removing device is first mixed with the water sheet sprayed from the annular nozzle 213, and part of the flue gas is dissolved in the water body and then flows to the dust removing umbrella 121. The dust removing umbrella 121 is fixed in the whole dust removing device through a steel frame structure, the annular nozzle 213 is arranged right above the dust removing umbrella 121, and the distance between the dust removing umbrella 121 and the annular nozzle 213 is 100-300mm.
According to the example embodiment, the bevel angle of the umbrella cover of the dust removing umbrella 121 is designed to be 30-45 degrees, and the umbrella cover with a certain angle is used for ensuring that the mixture is uniformly distributed on the umbrella cover and flows smoothly, the umbrella cover of the dust removing umbrella 121 is made of stainless steel 316L acid and alkali resistant materials, the dust removing umbrella has good corrosion resistance, and when the flue gas mixture containing various chemical substances is treated, the long-term stable operation of the dust removing device can be ensured by adopting the stainless steel 316L acid and alkali resistant materials. The dust removing umbrella 121 is used for treating smoke dust and pollutants in the water-gas mixture, and can enable the water-gas mixture to form a uniformly distributed water film on the umbrella surface, so that the smoke dust and pollutants are more effectively captured.
The mixture of high temperature flue gas and water sheet is intercepted by the umbrella face when flowing to dust removing umbrella 121 for the area of contact between flue gas and the water droplet increases, helps the dust particle to adhere to on the water droplet, because the design of slope umbrella face, sewage flows down along the slope of umbrella face, and the annular effluent water sump 311 of converging dust removing umbrella below, and the design of dust removing umbrella 121 can guarantee that rivers are smooth and easy, reduces the jam, and is favorable to subsequent sewage treatment.
The gas containing the smoke flows to the second dust collector through the smoke accelerator 123, and the smoke accelerator 123 aims to increase the flow rate of the smoke so that the gas passes through the smoke channel better. The flue gas accelerator can design the flue area according to the flue gas flow, so that the flue gas flow rate is improved, and the purpose of purifying smoke dust is achieved. The flue gas accelerator 123 accelerates the flue gas, the structure diagram of the flue gas accelerator is shown in fig. 5, the flue gas accelerator changes the diameter of the flue gas pipeline from 2D to D, because the resistance of the gas flowing is inversely proportional to the cross-sectional area of the pipeline, the decrease of the diameter of the flue can lead to the increase of the flow rate of the flue gas, the flow rate of the flue gas is obviously improved through the flue gas accelerator, and the contact efficiency of the mixture of the smoke dust and the water mist is improved, so that the dust removal efficiency of the whole system is improved.
The annular sewage tank 311 is used for storing sewage separated by the dust removing umbrella 121, the annular sewage tank 311 is connected with a sewage pipeline 321 in a sewage system, and the sewage subjected to the first-stage cooling and dust removing treatment finally enters a bottom sewage treatment tank 323 through the annular sewage tank 311 and the sewage pipeline 321, so that continuous and stable treatment of smoke dust is ensured. The sewage often contains various acidic and alkaline substances, the sewage pipeline needs to have acid and alkali resistance, the sewage system can be made of glass fiber reinforced plastic, has good corrosion resistance and impact resistance, cannot be corroded and damaged by acidic and alkaline liquid, and ensures the service life of dust removal equipment.
In this example embodiment, lay the flue gas accelerator in dust collector's structure, can make the flue area more even to promote the flue gas velocity of flow, avoid taking place the partial obstruction phenomenon, make the flue gas discharge more rapidly, and then improve the work efficiency of whole industrial furnace flue gas dust collecting equipment.
Fig. 6 shows a schematic structural view of an industrial furnace flue gas dust removal apparatus according to an example embodiment.
Referring to fig. 6, the flue gas dust removal device of the industrial furnace is mainly divided into several parts in the drawing: a dedusting reaction kettle 101, a clean water system 201, a sewage system 301 and a smoke exhaust device 401. The schematic plan view of the flue gas dust removal device of the industrial furnace is shown in fig. 7, a flue gas pipeline 131 is arranged between the dust removal reaction kettle 101 and a smoke discharging device 401, and the smoke discharging device 401 comprises a flue gas diffuser and a demisting umbrella 411.
The dust removal reaction kettle 101 comprises a first dust removal device 111, a second dust removal device 112, a third dust removal device 113, a fourth dust removal device 114 and a fifth dust removal device 115, wherein the five dust removal devices 111-115 are respectively arranged in the dust removal reaction kettle 101 from top to bottom. The clean water system 201 provides water for spraying for the dust removal reaction kettle 101, high-temperature flue gas flows into the first dust removal device 111 under the spraying effect, cooling and dust removal are performed, the flue gas passing through the first dust removal device 111 continues to flow to the second dust removal device 112, cooling and dust removal are repeated until the flue gas flows to the last fifth dust removal device 115, the flue gas after multiple dust removal treatment flows to the smoke exhaust device 401 through the flue gas pipeline 131, and sewage passing through the dust removal reaction kettle 101 is subjected to water-sewage separation through the sewage system 301.
According to an exemplary embodiment, the diffuser and demister 411 in the smoke exhaust 401 are of great importance for improving the smoke emission quality and protecting the environment. The main function of the flue gas diffuser is to uniformly disperse the flue gas exhausted from the outlet of the chimney into the atmosphere, and the cooling and dilution of the flue gas can be accelerated by increasing the contact area between the flue gas and the atmosphere, so that the temperature and the concentration of the flue gas are reduced, and the influence on the surrounding environment is reduced. A demister umbrella is installed inside the smoke exhaust 401, and the main purpose is to remove liquid drops in smoke, such as water mist, acid mist, etc. When flue gas passes through the demisting umbrella, liquid drops can be attached to the umbrella surface due to the action of gravity and inertia, then flow down along the umbrella surface and are collected, pollution caused by direct discharge into the atmosphere is avoided, and the flue gas diffuser and the demisting umbrella play an important auxiliary treatment role in flue gas dust removal equipment of an industrial furnace.
In this example embodiment, high temperature flue gas flows into dust collector, at first through cooling spraying system, and the steam that sprays can reduce the temperature of high temperature flue gas, dissolves partial smoke and dust and the pollutant in the high temperature flue gas simultaneously, and the flue gas through first stage cooling dust removal flows to second dust collector through the flue gas accelerator, repeatedly through a lot of cooling dust removal processing, finally reaches the purpose of purifying the smoke and dust.
In this example embodiment, the annular effluent water sump that sets up perpendicularly in the umbrella below removes dust, can guarantee to flow into from the sewage under the umbrella face separation annular effluent water sump entirely, and a plurality of annular effluent water sump connection sewer pipes in the industrial furnace flue gas dust collecting equipment finally with the sewage pool of converging bottom sewage treatment pond, sewage treatment pond carries out water-dirty separation through the mud pressure filter, presses the dry moisture with sewage, and the mud that separates carries out the clearance and handles, and the clean water that separates can cyclic utilization, adopts mud pressure filter to handle sewage can reduce the system water consumption, accomplishes album dirt, blowdown, circulating water on fixed space, improves system work efficiency and practices thrift the cost.
It will be clear to a person skilled in the art that the solution according to the utility model can be implemented by means of software and/or hardware. "Unit" and "module" in this specification refer to software and/or hardware capable of performing a particular function independently or in cooperation with other components.
It should be noted that, for simplicity of description, the foregoing method embodiments are all described as a series of acts, but it should be understood by those skilled in the art that the present utility model is not limited by the order of acts described, as some steps may be performed in other orders or concurrently in accordance with the present utility model. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present utility model.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
In the several embodiments provided by the present utility model, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, such as a division of units, merely a division of logic functions, and there may be additional divisions in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some service interface, device or unit indirect coupling or communication connection, electrical or otherwise.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present utility model may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
In the foregoing embodiments, the descriptions of the embodiments are emphasized, and for parts of one embodiment that are not described in detail, reference may be made to related descriptions of other embodiments.
The exemplary embodiments of the present utility model have been particularly shown and described above. It is to be understood that this utility model is not limited to the precise arrangements, instrumentalities and instrumentalities described herein; on the contrary, the utility model is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (9)
1. An apparatus for dust removal of industrial furnace flue gas, characterized in that the apparatus comprises a clean water system, a sewage system and a dust removal reaction kettle, wherein:
the dust removal reaction kettle comprises a plurality of dust removal devices, the dust removal devices are respectively arranged in the dust removal reaction kettle from top to bottom, the flue gas passing through the previous dust removal device continuously flows to the next dust removal device to cool and remove dust repeatedly until the flue gas flows to the last dust removal device, the dust removal devices comprise a dust removal umbrella, an annular sewage pool and a flue gas accelerator, the dust removal umbrella changes the falling direction of sewage mixed by water sheets and the flue gas, the annular sewage pool is arranged below the dust removal umbrella and is used for collecting sewage falling from the dust removal umbrella, and the flue gas subjected to dust removal treatment flows to the next layer of dust removal umbrella through the flue gas accelerator;
The clean water system provides spraying water for the dust removal reaction kettle, so that the temperature of the high-temperature flue gas flowing in is reduced and dust removed through a spraying effect;
The sewage system comprises a sewage pipeline and a sewage treatment tank, the sewage system collects sewage passing through the dust removal reaction kettle and performs water-sewage separation, and the annular sewage tank is connected to the sewage treatment tank through the sewage pipeline.
2. The apparatus of claim 1, wherein the dust removal device further comprises:
And the cooling spraying system is used for mixing the water sheet sprayed by the cooling spraying system with the flue gas.
3. The apparatus of claim 2, wherein the cooling spray system comprises an annular nozzle.
4. A device according to claim 3, wherein the water outlet of the annular nozzle is adjustable.
5. The apparatus of claim 2, wherein the clean water system comprises a clean water feed pump, a dust fall conduit, the clean water feed pump supplying water to the cooling spray system through the dust fall conduit.
6. The apparatus of claim 1, wherein the flue gas accelerator is disposed below a central aperture of the annular sump.
7. The apparatus of claim 1, wherein the flue gas accelerator comprises a trapezoidal barrel having a flue gas inlet diameter that is greater than a flue gas outlet diameter of the trapezoidal barrel.
8. The apparatus of claim 1, further comprising a fume extractor and a fume duct, the fume extractor being in communication with the dust removal reaction vessel through the fume duct to thereby exhaust the dust removed fume.
9. The apparatus as recited in claim 1, further comprising:
And the sludge filter press is used for separating water from sewage in the sewage treatment tank, and the separated clean water is recycled.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117482672A (en) * | 2023-12-13 | 2024-02-02 | 启明星宇节能科技股份有限公司 | Equipment for industrial furnace flue gas dust removal |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN117482672A (en) * | 2023-12-13 | 2024-02-02 | 启明星宇节能科技股份有限公司 | Equipment for industrial furnace flue gas dust removal |
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