CN114307483A - Steam dust removal system - Google Patents
Steam dust removal system Download PDFInfo
- Publication number
- CN114307483A CN114307483A CN202210155871.5A CN202210155871A CN114307483A CN 114307483 A CN114307483 A CN 114307483A CN 202210155871 A CN202210155871 A CN 202210155871A CN 114307483 A CN114307483 A CN 114307483A
- Authority
- CN
- China
- Prior art keywords
- stage
- dust
- flushing
- washing tower
- washing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Separation Of Particles Using Liquids (AREA)
Abstract
The invention relates to the technical field of dust removal in a sintering process, in particular to a steam dust removal system. A baffle plate demister, a tubular demister and a lower layer spray water system are arranged in the washing tower from top to bottom, a baffle plate demister and a lower layer spray water system are arranged in the auxiliary washing tower from top to bottom, and an air inlet of the auxiliary washing tower is connected with a dust collection point; the air outlet of the auxiliary washing tower is connected with the air inlet of the washing tower through an induced draft fan; an air outlet of the washing tower is connected with a filter box at the upper part of the circulating pool; the filter box is communicated with the circulating tank; the washing auxiliary tower and the water return ports at the bottom of the washing tower are communicated with the circulating pool; the circulating tank is connected with the washing auxiliary tower and a lower-layer spray water system of the washing tower through a circulating pump; the process water tank is connected with the washing auxiliary tower and the baffle plate demister of the washing tower through a demister flushing pump; the circulating tank is connected with a dust removal device system; the dust removal device system collects dust in the dust-containing water slurry and transports the dust out; the dust collector system sends the water slurry back to the circulation tank.
Description
Technical Field
The invention relates to the technical field of dust removal in a sintering process, in particular to a steam dust removal system.
Background
The dust removing facility of the sintering secondary mixed steam dust is key important equipment in the sintering secondary mixed production process, and mainly undertakes the transportation and distribution work of sintering mixed materials, and the mixed materials contain small-particle dry materials such as steam, sintering return ores, dust and the like in the production process, so that a large amount of dust is generated during the operation and distribution. According to the requirement of three-year action scheme (2018-year 2020) of defense war for fighting the win blue days by controlling haze in the ankle in Shaanxi province (revision), in 2020, the excellent day rate and PM2.5 concentration in the province region complete the national goal, the rate of severe and above pollution days is reduced by more than 25% compared with 2015, the PM10 concentration is obviously reduced, the rising of nitrogen dioxide concentration and the aggravation trend of ozone pollution are restrained, and the annual average concentration of sulfur dioxide and carbon monoxide basically reaches the national environmental air quality secondary standard; according to the ultra-low emission transformation scheme of the iron and steel industry in Shaanxi province and the emission characteristics of the industry, index limit values and control measures are put forward for organized emission, unorganized emission and bulk material product transportation according to categories, and the whole-process and whole-process environmental management is realized. The average values of the emission concentrations of the sintering machine head, pellet roasting smoke particles, sulfur dioxide and nitrogen oxides are respectively not higher than 10 mg/cubic meter, 35 mg/cubic meter and 50 mg/cubic meter, and other main pollution sources are respectively not higher than 10 mg/cubic meter, 50 mg/cubic meter and 200 mg/cubic meter in principle; effective measures such as sealing and closing are adopted in the process of material storage, transportation and production technology, and the effective management and control of unorganized emission are realized; bulk materials and products are transported in clean modes such as railways, water ways and pipelines, the clean transportation proportion is not lower than 80%, and strict requirements are provided for monitoring.
The company carries out reconstruction and upgrading aiming at a dust removing facility of the sintering secondary mixed steam, and ensures that the region meets the latest environmental protection requirement. The project is designed according to the ultra-clean emission standard of dust emission concentration less than 10mg/Nm 3.
Disclosure of Invention
The invention aims to provide
In order to achieve the purpose, the invention provides the following technical scheme:
a steam dust removal system is characterized by comprising a washing auxiliary tower, a washing tower, a circulating pool and a process water tank;
a baffle plate demister, a tubular demister and a lower layer water spraying system are sequentially arranged in the washing tower from top to bottom,
a baffle plate demister and a lower layer spray water system are sequentially arranged in the auxiliary washing tower from top to bottom,
the air inlet of the auxiliary washing tower is connected with the dust collecting point through a pipeline;
the air outlet of the auxiliary washing tower is connected with the air inlet of the washing tower through a draught fan and a pipeline;
an air outlet of the washing tower is connected with a filter box at the upper part of the circulating pool through a pipeline;
the filter box is communicated with the circulating tank;
the washing auxiliary tower and the water return port at the bottom of the washing tower are communicated with the circulating pool through a pipeline;
the circulating tank is connected with the auxiliary washing tower and a lower-layer spray water system of the washing tower through pipelines by a circulating pump;
the process water tank is connected with the washing auxiliary tower and the baffle plate demister of the washing tower through a demister flushing pump through pipelines;
the circulating tank is connected with a dust removal device system; the dust removal device system collects dust in the dust-containing water slurry and transports the dust out;
and the dust removal device system sends the water slurry back to the circulating tank through a pipeline.
Furthermore, an upper-layer spray water system is arranged between the baffle plate demister and the tubular demister of the washing tower, and the process water tank is connected with the upper-layer spray water system through a demister washing pump and a pipeline;
furthermore, a branch pipeline is arranged on a pipeline from the dust removal device system to the circulating tank and is connected with a heat exchange water tank for heat exchange and waste heat collection; the heat exchange water tank discharges the water slurry subjected to heat exchange to a designated position through a pipeline by a slurry pump.
Furthermore, liquid level meters are arranged in the process water tank, the heat exchange water tank and the circulating pool; and a PH meter is arranged in the circulating tank.
Furthermore, a pipeline for connecting the circulation tank with the lower-layer spray water system is provided with a soft connector, and the soft connector is arranged close to the auxiliary washing tower or the side of the washing tower.
Furthermore, the tubular demister comprises a tube bundle demister cylinder, a supporting platform is arranged in the tube bundle demister cylinder, and a plurality of cyclone dust and mist removing devices are arranged on the supporting platform;
the cyclone dust-removing demisting device comprises a pipe wall and a washing device; a plurality of stages of rotational flow blades are arranged in the pipe wall; the flushing device penetrates through the rotational flow blades and is arranged inside the pipe wall;
the front part of each stage of the rotational flow blade from the second stage to the last stage of the rotational flow blade is provided with a Venturi tube, and a rotational convergence coupler is arranged between the Venturi tube and the stage of the rotational flow blade.
Furthermore, the flushing device comprises flushing pipelines which are arranged in a grading way, and the grade number of the flushing pipelines is the same as that of the swirl vanes; the adjacent flushing pipelines are connected through flushing joints, and the tail end of the last stage of flushing pipeline is connected with a water supply pipeline through a flushing joint;
a flushing nozzle is arranged at the joint of the adjacent flushing pipelines, and a flushing nozzle is arranged at the top end of the first-stage flushing pipeline;
the flushing device is arranged in the pipe wall; each stage of flushing pipeline penetrates through each stage of rotational flow blades.
Furthermore, the swirl blades are three-stage swirl blades, and the flushing device penetrates through the three-stage swirl blades and is arranged in the pipe wall; the flushing pipe of the flushing device comprises a three-stage flushing pipe.
Furthermore, a first-stage Venturi tube is arranged at the front part of the second-stage rotational flow blade, and a first-stage rotational converging coupler is arranged between the second-stage rotational flow blade and the first-stage Venturi tube; the front part of the third-stage rotational flow blade is provided with a second-stage Venturi tube, and a second-stage rotational converging coupler is arranged between the third-stage rotational flow blade and the second-stage Venturi tube.
Furthermore, the rotational flow blades adopt a centrifugal sedimentation hydrocyclone; the first-stage rotary-convergence coupler is a three-stage rotary-convergence coupler, and the second-stage rotary-convergence coupler is a four-stage rotary-convergence coupler.
The beneficial effect of this application:
the project plans to adopt the mature wet dust removal technology in China at present, and ensures that the region meets the latest environmental protection requirement. In this application, dust pelletizing system's design includes collection system, spraying system, draught fan, dust remover, clarifier, heat transfer system, circulation system, supporting water pump, pipe valve, electric instrument control etc.. The dust removal form is wet mechanical type, power washing, Venturi, rotary convergence coupling and tube bundle type. The wet dust-removing washing tower adopts a reverse spray type, the lower part of the wet dust-removing washing tower is an empty tower reverse spray and Venturi rod type dust removing device, and the upper wet tube bundle dust (mist) removing element and the tower body are of an integrated structure. The dust emission concentration can stably reach the ultra-clean emission standard of less than 10mg/Nm3 through practice of the corresponding project of the application so as to meet the increasingly strict environmental protection requirement.
The multi-tube type dedusting and demisting device is installed at the position of an original demister on the upper part of a spraying section of the dedusting tower, and flue gas directly enters the multi-tube type dedusting and demisting system after entering the dedusting tower and removing dust through a spraying system. The flue gas is at the tertiary centrifugal whirl of multitube dust removal defogging process, and the two-stage venturi accelerates, one set of tertiary collection coupled system soon and one set of level four collection coupled system soon. The dust-containing gas is subjected to advanced evolution treatment by a dust removal and demisting technology (when the dust content of the inlet of the dust removal flue gas is less than 50mg/m 3), the dust content of the outlet can be reduced to be less than 5mg/m3, and the problem can be effectively solved. In the treatment process, only the washing water pump consumes electric energy, the whole multi-tube type rotational flow dedusting and demisting technology does not need extra energy, and the operation cost is extremely low.
Drawings
FIG. 1 is a schematic plan view of a steam dust removal facility and a flue of the present application.
FIG. 2 is a schematic view of a horizontal sectional view of the multi-tube cyclone dust and mist removing device of the present application.
FIG. 3 is a schematic view of a vertical cross-section structure of the cyclone dust and mist removing device of the present application.
Wherein:
Washing auxiliary tower 2
Baffle demister 21
Lower spray water system 22
Draught fan 3
Washing tower 4
Baffle demister 41
Upper spray water system 42
Tubular demister 43
Lower spray water system 44
Flexible connector 45
Circulation pump 52
Heat exchange water tank 6
Process water tank 7
Demister flush pump 71
Dust removal device system 8
Tube bank defroster barrel 431
Cyclone dust and mist removing device 432
Flushing line 220
Flushing nozzle 221
First stage swirl vanes 231
Second stage swirl vanes 232
Third stage swirl vane 233
First stage rotary bus coupler 251
A second stage rotary bus coupler 252.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
With reference to the attached drawings, the two-mixed steam dust removal facility and the flue plane layout of the sintering system disclosed by the application mainly comprise a washing auxiliary tower 2, a washing tower 4, a circulating pool 5, a process water tank 7 and other facilities.
The steam dust firstly passes through the auxiliary washing tower 2 for dedusting, then enters the washing tower 4 for dedusting again, and after passing through the circulating pool 5, is sent to the dedusting device system 8 for collection and outward transportation. The process water tank 7 is used for supplementing water.
The washing tower 4 is internally provided with a baffle plate demister 21/41, a tubular demister 43 and a lower-layer spray water system 22/44 from top to bottom in sequence.
The lower spray water system 22/44 is arranged in two layers, each spray water system comprises a group of sprayers, and a large number of spray heads are arranged on the sprayers.
And the air inlet of the auxiliary washing tower 2 is arranged at the lower part of the auxiliary washing tower 2. An air inlet of the auxiliary washing tower 2 is connected with the dust collection point 11 through a pipeline; the dust collection points 11 include, but are not limited to, a # 1 sintering machine head dust collection point, a # 2 sintering machine head dust collection point, a tail dust collection point, and the like; in the design, a dust collection point of a head of a 1# sintering machine and a dust collection point of a head of a 2# sintering machine are designed in series and then are connected into an air inlet of an auxiliary washing tower 2, a manual valve 12 is arranged in front of the air inlet, a dust collection point 11 of a tail of the sintering machine is connected into the air inlet of the auxiliary washing tower 2, and the manual valve 12 is arranged in front of the air inlet.
And the air outlet of the auxiliary washing tower 2 is arranged at the top of the auxiliary washing tower 2.
The air inlet of the washing tower 4 is arranged at the lower part of the washing tower 4. And the air outlet of the auxiliary washing tower 2 is connected with the air inlet of the washing tower 4 through a draught fan 3 and a pipeline.
And the air outlet of the washing tower 4 is arranged at the top of the washing tower 4. The air outlet of the washing tower 4 is connected with a filter box 51 at the upper part of the circulating pool 5 through a pipeline; a plurality of groups of pore plates are arranged in the filter box 51, and a spraying device for washing the pore plates is arranged at the pore plates. The filter tank 51 communicates with the circulation tank 5.
And the water return ports at the bottoms of the auxiliary washing tower 2 and the washing tower 4 are communicated with the circulating pool 5 through pipelines.
The circulation tank 5 is connected to the lower spray water system 22/44 of the scrub sub-tower 2 and the scrub tower 4 through a pipe via a circulation pump 52.
The process water tank 7 is connected via a demister flushing pump 71 via pipes to the baffle demister 21/41 of the secondary washing column 2 and the washing column 4.
The circulating tank 5 is connected with a dust removal device system 8; the dust removal device system 8 collects dust in the dust-containing water slurry and transports the dust out.
The dust removal device system 8 sends the water slurry back to the circulation tank 5 through a pipe.
Further, an upper spraying water system 42 is arranged between the baffle demister 21/41 and the tubular demister 43 of the washing tower 4, and the process water tank 7 is connected with the upper spraying water system 42 through a demister washing pump 71 through a pipeline;
furthermore, a branch pipeline is arranged on a pipeline from the dust removal device system 8 to the circulating pool 5, and is connected with the heat exchange water tank 6 for heat exchange and waste heat collection; the heat exchange water tank 6 discharges the water slurry subjected to heat exchange to a designated position through a pipeline via a slurry pump 61.
Liquid level meters are arranged in the process water tank 7, the heat exchange water tank 6 and the circulating tank 5; the liquid level meter adopts an ultrasonic liquid level meter. And a PH meter is arranged in the circulating pool 5.
A flexible connector 45 is provided on a pipe connecting the circulation tank 5 and the lower spray water system 22/44, and the flexible connector 45 is provided on a side close to the sub-scrubber 2 or the scrubber 4.
In the present application, the tube demister 43 includes a tube bundle demister cylinder 431, a support platform 433 is disposed inside the tube bundle demister cylinder 431, and a plurality of cyclone dust and mist removing devices 432 are disposed on the support platform 433; the cyclone dust-removing demisting device 432 comprises a pipe wall 210 and a washing device; a plurality of stages of swirl blades are arranged in the pipe wall 210; the flushing device is arranged inside the pipe wall 210 through the swirl vanes; the front part of each stage of the rotational flow blade from the second stage to the last stage of the rotational flow blade is provided with a Venturi tube, and a rotational convergence coupler is arranged between the Venturi tube and the stage of the rotational flow blade.
The flushing device comprises flushing pipelines 220, wherein the flushing pipelines 220 are arranged in a grading manner, and the grade number is the same as that of the swirl vanes; the adjacent flushing pipes 220 are connected through flushing joints 222, and the tail end of the last-stage flushing pipe 220 is connected with a water supply pipe through the flushing joints 222; a flushing nozzle 221 is arranged at the joint of the adjacent flushing pipelines 220, and the top end of the first-stage flushing pipeline 220 is provided with the flushing nozzle 221; the flushing device is arranged in the pipe wall 210; each stage of the flush line 220 extends through each stage of the swirl vanes.
Optionally, the swirl vanes are three-stage swirl vanes, and the flushing device penetrates through the three-stage swirl vanes and is arranged in the pipe wall 210; the flushing line 220 of the flushing device comprises a tertiary flushing line 220.
Furthermore, a first-stage venturi tube 241 is arranged in front of the second-stage swirl vane 232, and a first-stage swirl-converging coupler 251 is arranged between the second-stage swirl vane 232 and the first-stage venturi tube 241; the front part of the third stage rotational flow blade 233 is provided with a second stage venturi tube 242, and a second stage rotational converging coupler 252 is arranged between the third stage rotational flow blade 233 and the second stage venturi tube 242.
Furthermore, the rotational flow blades adopt a centrifugal sedimentation hydrocyclone; the first stage rotary bus coupler 251 is a three-stage rotary bus coupler, and the second stage rotary bus coupler 252 is a four-stage rotary bus coupler.
By adopting the technical scheme of the application, the following design indexes can be realized.
Main technical indexes of meter system
| Serial number | Index item | Unit of | Parameter index |
| 1 | Design dust removal efficiency | ％ | >90 |
| 2 | Ensuring the emission concentration of the particulate matter | mg/Nm3 | ≤5 |
| 3 | Water consumption (Industrial water, cooling water) | t/ |
5 |
| 4 | Power consumption | KW/h | 120 |
| 5 | Total resistance of system | Pa | 3000 |
TABLE 2 Main design indexes of dust-removing system
| Serial number | Item | Unit of | Numerical value |
| 1 | Displacement of gas | m3/h | 40000 |
| 2 | Concentration of particulate matter at outlet of induced draft fan | mg/Nm3 | ≤5 |
| 3 | Removal rate of the system | ％ | >90 |
| 4 | Inlet temperature | ℃ | 70 |
| 5 | Dust content (unorganized) | mg/m3 | -- |
| 6 | Residual pressure of draught fan | pa | 800 |
| 7 | Device availability rate | ％ | >95 |
In this application, dust pelletizing system's design includes collection system, spraying system, draught fan, dust remover, clarifier, heat transfer system, circulation system, supporting water pump, pipe valve, electric instrument control etc.. The dust removal form is wet mechanical type, power washing, Venturi, rotary convergence coupling and tube bundle type. The wet dust-removing washing tower adopts a reverse spray type, the lower part of the wet dust-removing washing tower is an empty tower reverse spray and Venturi rod type dust removing device, and the upper wet tube bundle dust (mist) removing element and the tower body are of an integrated structure. The device is integrally supplied or installed on site according to equipment, and comprises a shell, a nozzle, all internal components, a draught fan, a stirrer, a tube bundle, a tower body steel structure fastener and the like. The pipeline and the tower body are made of glass fiber reinforced plastic by integral winding, and the lining silicon carbide micro powder is synthesized by adding vinyl resin, so that the pipeline and the tower body are corrosion-resistant and wear-resistant.
The inlet section of the spray pipe collecting pipeline is designed to be an inclined angle and is provided with flushing water, so that smoke backflow and solid accumulation are prevented. The spray system in the collecting pipeline consists of a distribution pipe network and a nozzle, and the design of the spray system can reasonably distribute spray required to ensure uniform airflow direction, ensure full contact and reaction of liquid and gas and meet the requirements of environmental protection and dust removal. The spraying system is made by integrally winding FRP. The spraying layer of the dust remover is provided with a large number of nozzles, and the spraying angles have a certain proportion of overlapping degree. So as to be consistent with the gas flow direction. All nozzles can avoid rapid abrasion, scaling and blockage, and the nozzle material is made of silicon carbide or equivalent materials. The design of the nozzle and the pipeline is convenient for maintenance, washing and replacement.
The tubular defroster is the multi-tube whirl dust removal defogging technique, and multi-tube dust removal defogging equipment is installed in the former defroster position in gas wash tower spray section upper portion, and the flue gas gets into the gas wash tower directly to enter into multi-tube dust removal defogging system after spraying system desorption dust. The flue gas is at the tertiary centrifugal whirl of multitube dust removal defogging process, and the two-stage venturi accelerates, one set of tertiary collection coupled system soon and one set of level four collection coupled system soon. The dust-containing gas is subjected to advanced evolution treatment by a dust removal and demisting technology (when the dust content of the inlet of the dust removal flue gas is less than 50mg/m 3), the dust content of the outlet can be reduced to be less than 5mg/m3, and the problem can be effectively solved. In the treatment process, only the washing water pump consumes electric energy, the whole multi-tube type rotational flow dedusting and demisting technology does not need extra energy, and the operation cost is extremely low.
The tube bundle demister of the tube type demister has smooth and clean inner surface, vertical cylinder, smooth section and no eccentricity. The three-stage cyclone blades enable the air flow to rotate in the demister cylinder, and the separation of fog drops with different particle sizes in the flue gas is realized. The flushing device flushes the rotational flow blades, the pipe wall and the first-stage second-stage speed increaser, and blockage is avoided.
The working principle of the multi-tube dust and mist removing device is that fog drops and dust particles carried in smoke are removed in the processes of high-speed turbulence, violent mixing and rotary motion of the smoke by utilizing the principles of agglomeration, catching and annihilation. Agglomeration means that fine liquid particles included in flue gas collide with each other to agglomerate into larger particles and then settle down; the catching means that fine liquid particles are caught by liquid to realize separation after being fully contacted with a liquid holding layer in the turbulator along with gas; annihilation means that when fine liquid particles are thrown to the surface of the turbulator, an attached liquid film is formed so as to be separated out from the flue gas; these three movements simultaneously remove dust entrained in the droplets.
The multi-tube type rotational flow dedusting and demisting technology does not generate secondary fog drops; in order to ensure the dust removal effect, the device is provided with the multi-stage guide vanes according to the project conditions, so that the gas retention time is prolonged, and the dust removal effect of the dust remover on dust particles is improved.
(1) Characteristics of the environment of use
The multi-pipe dust removal technology can treat saturated clean flue gas containing a large amount of liquid drops at about 50 ℃, and remove circulating liquid drops, condensed liquid drops, dust-containing particles and the like in the flue gas.
(2) Agglomeration of fine droplets and particles
The collision probability of a large number of fine liquid drops and particles under the condition of high-speed movement is greatly increased, and the fine liquid drops and the particles are easy to agglomerate and aggregate into large particles, so that the separation from a gas phase is realized.
(3) Capture of large droplets and liquid films
The liquid film on the inner wall of the dust collector cylinder can collect fine liquid drops contacting the surface of the dust collector cylinder, particularly, the over-thick liquid film on the surfaces of the speed increaser and the separator blade can generate a water scattering phenomenon under the action of high-speed airflow, a large number of large liquid drops are thrown out from the surface of the blade, and the large liquid drops are thrown out on the upper part of the blade
A liquid drop layer consisting of large liquid drops is formed, the small liquid drops penetrating through the liquid drop layer are captured, the large liquid drops fall back to the surface of the blade after becoming large, and the large liquid drops are changed into the large liquid drops again, so that the capture of the small fog drops is realized.
(4) Droplet removal under centrifugation
The airflow passing through the cyclone blades rotates at high speed and moves upwards, and fine fog drops and dust particles in the airflow are separated from the gas under the action of centrifugal force and move towards the surface of the cylinder. The liquid drops intercepted by the airflow rotating at high speed form a liquid film layer rotating on the inner wall of the cylinder. The fine mist droplets and fine dust particles separated from the gas are removed from the flue gas.
(5) Multistage separator for capturing liquid drops with different particle diameters
The larger the gas rotating flow velocity is, the better the centrifugal separation effect is, the larger the amount of the collected liquid drops is, the larger the thickness of the formed liquid film is, the larger the running resistance is, and the more easily the secondary fog drops are produced; therefore, the multistage separator is adopted to remove the fog drops at different flow rates, and the high-efficiency dust removal effect under low running resistance is ensured.
The water circulation in the circulating pump will be in the pond in this application is delivered to the nozzle, and the circulating pump sets up according to the unit system (every circulating pump corresponds one deck nozzle). 2 circulating pumps are arranged. The circulating pump can be automatically switched on and off in the system, and pressure display is provided. The circulating pump is a centrifugal pump or a submerged pump. The impeller is made of all-metal materials. The circulating pump is equipped with other accessories such as an oil level indicator, a mechanical seal, a coupling cover and a leakage liquid collecting device, and the pump suction inlet is equipped with a filter screen. The circulating pump is convenient to tear open and trade and maintain, disposes whole chassis or installation frame.
The main design content of the engineering power supply and distribution facilities in the project corresponding to the application is the design of low-voltage power supply and distribution, electrical transmission, illumination, cable laying, grounding and the like of related process equipment supporting facilities.
The power supply is from a low-voltage distribution room of a 450 square meter sintering two-mixing system.
The distribution voltage is 380V or 380V/220V voltage for low-voltage electric equipment. (2) The lighting adopts 380V/220V, and the lighting branch voltage adopts 220V.
And (1) the whole set adopts machine-side control and remote operation, a machine-side operation box is arranged on site, and a local control mode is adopted. A stainless steel three-proofing operation box is required to be used for installing an emergency stop switch. And (4) paying attention to the starting sequence, starting the spraying pump firstly, then starting the induced draft fan, and stopping in the opposite sequence. (2) And a safety chain is arranged among the induced draft fan, the circulating pump, the pressure difference meter and the audible and visual alarm under the control of the PLC system. And the control interface is provided with an upper computer for operation control and comprises: the system has the advantages that the system has a function of starting and stopping the induced draft fan, a function of closing a circulating switch, a function of opening and closing an electromagnetic valve and a function of controlling field illumination, and a PLC program cannot be encrypted. The upper computer is arranged in the duty room. (3) The lighting distribution box is arranged on site and used for controlling a lighting system, the lighting lamp is selected from AC220V, and the LED energy-saving lamp meets the requirement of site safety illumination. (4) Draught fan motor 75KW in order to avoid impacting the electric wire netting when starting too big and influence other consumer's normal operating, in order to improve big motor and mechanical equipment's life simultaneously, adopts the soft start mode to start.
Selecting and laying cables, wherein a low-voltage power cable adopts ZR-YJV-0.6/1KV, and a control cable adopts KVV-500 type. The power cable is connected and led from a power distribution cabinet of a low-voltage distribution room of the system, the cable is laid in a cable bridge frame laying and pipe penetrating manner, the pipe penetrating manner is adopted outdoors, the cable bridge frame is laid inside, the specification of the bridge frame is 200 x 100mm, and the bridge frame is considered to be laid along a steel beam. All cable facilities adopt fire prevention measures such as fire resistance plugging, separation and the like according to the standard requirements.
And all electrical equipment, the operation box and the control box need to be protected and grounded, and form a grounding network with other metal pipelines and metal components, and the grounding resistance value of the grounding network is not more than 4 omega.
While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A steam dust removal system is characterized by comprising a washing auxiliary tower, a washing tower, a circulating pool and a process water tank;
a baffle plate demister, a tubular demister and a lower layer water spraying system are sequentially arranged in the washing tower from top to bottom,
a baffle plate demister and a lower layer spray water system are sequentially arranged in the auxiliary washing tower from top to bottom,
the air inlet of the auxiliary washing tower is connected with the dust collecting point through a pipeline;
the air outlet of the auxiliary washing tower is connected with the air inlet of the washing tower through a draught fan and a pipeline;
an air outlet of the washing tower is connected with a filter box at the upper part of the circulating pool through a pipeline;
the filter box is communicated with the circulating tank;
the washing auxiliary tower and the water return port at the bottom of the washing tower are communicated with the circulating pool through a pipeline;
the circulating tank is connected with the auxiliary washing tower and a lower-layer spray water system of the washing tower through pipelines by a circulating pump;
the process water tank is connected with the washing auxiliary tower and the baffle plate demister of the washing tower through a demister flushing pump through pipelines; the process water tank is externally connected with industrial water supply;
the circulating tank is connected with a dust removal device system; the dust removal device system collects dust in the dust-containing water slurry and transports the dust out;
and the dust removal device system sends the water slurry back to the circulating tank through a pipeline.
2. The steam dust dedusting system of claim 1, wherein an upper spray water system is disposed between the baffle demister and the tubular demister of the washing tower, and the process water tank is connected to the upper spray water system through a pipeline via a demister washing pump.
3. The steam dust removing system of claim 1, wherein a branch pipe is arranged on the pipe from the dust removing device system to the circulation tank, and the branch pipe is connected with a heat exchange water tank for heat exchange and waste heat collection; the heat exchange water tank discharges the water slurry subjected to heat exchange to a designated position through a pipeline by a slurry pump.
4. The steam dust dedusting system of claim 1, wherein liquid level meters are arranged in the process water tank, the heat exchange water tank and the circulating tank; and a PH meter is arranged in the circulating tank.
5. The steam dust removing system of claim 1, wherein a soft connector is provided on a pipe connecting the circulation tank and the lower layer spray water system, and the soft connector is provided near the side of the washing sub-tower or the washing tower.
6. The steam dust dedusting system of claim 1, wherein the pipe demister is arranged in the washing tower and comprises a tube bundle demister cylinder, a support platform is arranged in the tube bundle demister cylinder, and a plurality of cyclone dedusting and demisting devices are arranged on the support platform;
the cyclone dust-removing demisting device comprises a pipe wall and a washing device; a plurality of stages of rotational flow blades are arranged in the pipe wall; the flushing device penetrates through the rotational flow blades and is arranged inside the pipe wall;
the front part of each stage of the rotational flow blade from the second stage to the last stage of the rotational flow blade is provided with a Venturi tube, and a rotational convergence coupler is arranged between the Venturi tube and the stage of the rotational flow blade.
7. The steam dust dedusting system of claim 6, wherein the flushing device comprises flushing pipes, the flushing pipes are arranged in a grading manner, and the grading is the same as that of the swirl vanes; the adjacent flushing pipelines are connected through flushing joints, and the tail end of the last stage of flushing pipeline is connected with a water supply pipeline through a flushing joint;
a flushing nozzle is arranged at the joint of the adjacent flushing pipelines, and a flushing nozzle is arranged at the top end of the first-stage flushing pipeline;
the flushing device is arranged in the pipe wall; each stage of flushing pipeline penetrates through each stage of rotational flow blades.
8. The steam dust dedusting system of claim 7, wherein the swirl vanes are three stage swirl vanes, and the flushing device is disposed in the pipe wall through the three stage swirl vanes; the flushing pipe of the flushing device comprises a three-stage flushing pipe.
9. The steam dust dedusting system of claim 8, wherein a first stage venturi tube is arranged in front of the second stage cyclone vane, and a first stage cyclone coupler is arranged between the second stage cyclone vane and the first stage venturi tube; the front part of the third-stage rotational flow blade is provided with a second-stage Venturi tube, and a second-stage rotational converging coupler is arranged between the third-stage rotational flow blade and the second-stage Venturi tube.
10. A steam dust removal system as claimed in claim 9, wherein the swirl vanes are centrifugal settling hydrocyclones; the first-stage rotary-convergence coupler is a three-stage rotary-convergence coupler, and the second-stage rotary-convergence coupler is a four-stage rotary-convergence coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210155871.5A CN114307483A (en) | 2022-02-21 | 2022-02-21 | Steam dust removal system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210155871.5A CN114307483A (en) | 2022-02-21 | 2022-02-21 | Steam dust removal system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114307483A true CN114307483A (en) | 2022-04-12 |
Family
ID=81031151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210155871.5A Pending CN114307483A (en) | 2022-02-21 | 2022-02-21 | Steam dust removal system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114307483A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116037331A (en) * | 2023-03-06 | 2023-05-02 | 常州长登焊材股份有限公司 | Drawing oil circulation system for high-speed winding and drawing machine |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0570656A1 (en) * | 1992-05-18 | 1993-11-24 | DEPARIA S.r.L. | Filtering assembly for filtering the air coming from hoods mounted in kitchens or conveyed to air processing systems |
| US20050013757A1 (en) * | 2003-07-16 | 2005-01-20 | Franz Windschmitt | Method and system for removing sulfur and dust from waste gases, particularly refinery waste gases |
| CN104226055A (en) * | 2013-06-20 | 2014-12-24 | 山东丽沃得环保工程有限公司 | Novel wet-process dust remover of drying tower |
| CN105251309A (en) * | 2015-11-27 | 2016-01-20 | 江苏中立环保科技有限公司 | Efficient energy-saving static dust and smoke remover and treatment method thereof |
| CN107954428A (en) * | 2017-12-07 | 2018-04-24 | 宜昌鄂中化工有限公司 | The device and method that fluorine high-quality recycles in a kind of phosphoric acid by wet process tail gas |
| CN208660703U (en) * | 2018-06-28 | 2019-03-29 | 上海卓佑实业有限公司 | A kind of processing system of landfill flare exhausts |
| CN106457140B (en) * | 2014-09-29 | 2019-06-07 | 北京清新环境技术股份有限公司 | Rotation, which converges, couples ultra-clean desulphurizing and dust-removing integral system and its desulfurization and dust-removal method |
| CN210356536U (en) * | 2019-07-31 | 2020-04-21 | 河南澜溪环保科技有限公司 | Gum dipping waste gas treatment device |
| CN111714969A (en) * | 2020-07-08 | 2020-09-29 | 山东省环境保护科学研究设计院有限公司 | Multistage cyclone type dust and mist removing device and method for removing full particle size |
| CN212523615U (en) * | 2020-08-19 | 2021-02-12 | 云南科力环保股份公司 | Water-saving and white-removing device for sulfur dioxide in zinc oxide removal flue gas |
| CN215352781U (en) * | 2021-09-07 | 2021-12-31 | 派尔森环保科技有限公司 | Device for treating waste gas in waste battery crushing process |
-
2022
- 2022-02-21 CN CN202210155871.5A patent/CN114307483A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0570656A1 (en) * | 1992-05-18 | 1993-11-24 | DEPARIA S.r.L. | Filtering assembly for filtering the air coming from hoods mounted in kitchens or conveyed to air processing systems |
| US20050013757A1 (en) * | 2003-07-16 | 2005-01-20 | Franz Windschmitt | Method and system for removing sulfur and dust from waste gases, particularly refinery waste gases |
| CN104226055A (en) * | 2013-06-20 | 2014-12-24 | 山东丽沃得环保工程有限公司 | Novel wet-process dust remover of drying tower |
| CN106457140B (en) * | 2014-09-29 | 2019-06-07 | 北京清新环境技术股份有限公司 | Rotation, which converges, couples ultra-clean desulphurizing and dust-removing integral system and its desulfurization and dust-removal method |
| CN105251309A (en) * | 2015-11-27 | 2016-01-20 | 江苏中立环保科技有限公司 | Efficient energy-saving static dust and smoke remover and treatment method thereof |
| CN107954428A (en) * | 2017-12-07 | 2018-04-24 | 宜昌鄂中化工有限公司 | The device and method that fluorine high-quality recycles in a kind of phosphoric acid by wet process tail gas |
| CN208660703U (en) * | 2018-06-28 | 2019-03-29 | 上海卓佑实业有限公司 | A kind of processing system of landfill flare exhausts |
| CN210356536U (en) * | 2019-07-31 | 2020-04-21 | 河南澜溪环保科技有限公司 | Gum dipping waste gas treatment device |
| CN111714969A (en) * | 2020-07-08 | 2020-09-29 | 山东省环境保护科学研究设计院有限公司 | Multistage cyclone type dust and mist removing device and method for removing full particle size |
| CN212523615U (en) * | 2020-08-19 | 2021-02-12 | 云南科力环保股份公司 | Water-saving and white-removing device for sulfur dioxide in zinc oxide removal flue gas |
| CN215352781U (en) * | 2021-09-07 | 2021-12-31 | 派尔森环保科技有限公司 | Device for treating waste gas in waste battery crushing process |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116037331A (en) * | 2023-03-06 | 2023-05-02 | 常州长登焊材股份有限公司 | Drawing oil circulation system for high-speed winding and drawing machine |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105617798A (en) | Air-conveying type ultrasonic wave micron-grade dry fog dust suppression system and method | |
| CN217119617U (en) | Multi-tube cyclone dust and mist removing device | |
| CN108554158A (en) | A kind of high temperature and humidity flue gas cool-down desulfurizing and purifying system | |
| CN105863718A (en) | Mine water treatment and circulation system | |
| CN114307483A (en) | Steam dust removal system | |
| CN110068034B (en) | Wet-type kitchen oil smoke purifies odour removal system | |
| CN106669347B (en) | Labyrinth type cyclone dust removal device and dust removal method | |
| CN206454434U (en) | The flue gas high-efficiency low energy consumption dedusting of metallurgical slag processing procedure and device for deep cleaning | |
| CN214597986U (en) | Wet flue gas dust removal device | |
| CN102586523B (en) | Blast furnace gas purification plant | |
| CN220878213U (en) | Novel high-efficient wet dedusting tower | |
| CN107126818A (en) | A kind of nanometer dust absorption treating device and method | |
| CN201684533U (en) | Wet dust removal desulfurizing unit | |
| CN202715350U (en) | Wet desulfurization adsorption tower with multi-effect turbulence system | |
| CN212663094U (en) | Dust purification device for steel recovery workshop | |
| CN212731569U (en) | Dust-containing waste gas treatment device | |
| CN204543618U (en) | Bitumen flue gas condensation cleaning treating apparatus | |
| CN112933905A (en) | Efficient and energy-saving graphitized tail gas treatment system and treatment process thereof | |
| CN206911101U (en) | A kind of absorption tower desulfurizing dust-collector device | |
| CN205412541U (en) | Air -assisted ultrasonic wave micron order dry fog presses down dirt system | |
| CN206950879U (en) | A kind of forge dedusting environment friendly device | |
| CN2616280Y (en) | Efficient wet desulfurizing dust-removing apparatus | |
| CN219376573U (en) | Composite cyclone water dust collector | |
| CN2492298Y (en) | Composite atomizing and string-vibrating self-excitation apparatus for eliminating smoke and dust and desulfurizing | |
| CN2605058Y (en) | Compound efficient desulfurizing and dust-removing apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20220412 |