CN212818972U - Colored smoke plume desorption system of high temperature water flushing sediment steam - Google Patents
Colored smoke plume desorption system of high temperature water flushing sediment steam Download PDFInfo
- Publication number
- CN212818972U CN212818972U CN202021597761.7U CN202021597761U CN212818972U CN 212818972 U CN212818972 U CN 212818972U CN 202021597761 U CN202021597761 U CN 202021597761U CN 212818972 U CN212818972 U CN 212818972U
- Authority
- CN
- China
- Prior art keywords
- water
- slag
- steam
- spray
- pipeline
- 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.)
- Active
Links
Images
Landscapes
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The utility model provides a colored plume desorption system of high temperature water towards slag steam, including high altitude granulation tower, set gradually towards slag water entry, high temperature sediment entry, first defroster, liquid collecting device, spray set, condenser, second defroster, the hot zone of mixing on the tower body of high altitude granulation tower from bottom to top, mix the gas induced draught fan, still include towards slag bath, water quality adjusting unit and heat source unit, water quality adjusting unit links to each other with spray set, towards the slag bath pass through slag ditch A with high altitude granulation tower bottom wall connection, towards slag bath top lateral wall through steam backflow pipeline B and high altitude granulation tower wall connection, heat source unit passes through heat source flue G and high altitude granulation tower wall connection, and the junction sets up in mixed wind hot zone bottom. The method is suitable for comprehensive treatment of slag flushing steam generation areas such as a blast furnace slag flushing port, a slag flushing water pool and the like, can deeply purify the slag flushing steam of the blast furnace, and reduces the discharge amount of acidic pollutants such as hydrogen sulfide, sulfur dioxide and the like.
Description
Technical Field
The utility model relates to the technical field of flue gas purification in the metallurgical industry, in particular to a system for removing colored smoke plume in high-temperature water-washed slag steam.
Background
In the metallurgical industry, about 80 percent of high-temperature slag generated by an iron-making blast furnace is cooled by adopting a water quenching mode. About 0.3-0.4 ton blast furnace slag is produced per ton pig iron, and about 9-10 ton slag flushing water is consumed per ton slag. The slag flushing water can evaporate a large amount of slag flushing steam at the moment of contacting the high-temperature slag and in the process of conveying the slag flushing water to the slag flushing water tank, and takes away about 40 percent of heat of the high-temperature slag at the temperature of 80-100 ℃. In 2019, the blast furnace pig iron yield in China is 8.09 million tons, about 20 million tons of slag flushing water not only has a large amount of low-temperature waste heat resources, but also generates a large amount of low-pressure exhaust steam and dissipates about 0.85 million tons of slag flushing water. The discharged slag flushing steam contains a large amount of hydrogen sulfide, sulfur dioxide, hydrogen chloride, fiber cotton wool, silicate ultrafine particles and the like, and has great influence on the production environment. The water fog plume often exists in the production field, which harms the health of workers and causes serious corrosion to equipment and facilities in the blast furnace area. Therefore, the comprehensive treatment of the blast furnace slag flushing steam, the elimination of white smoke in a blast furnace area, the recovery of a large amount of water resources, the improvement of the environment of the blast furnace area, the weakening of the corrosion of production equipment and the reduction of pollutant emission become the problems of increasing attention of enterprises and society.
Since 2016, the requirements of treating colored smoke plume of industrial smoke in more than 30 provinces and cities and areas in China are met, and meanwhile, the practical conditions of severe haze and water resource shortage in northern areas of China further promote the technical progress in the field. For example, patent publication No. CN103060494B proposes a steam recovery type blast furnace slag flushing water system, which adopts a spraying mode to recover the exhaust steam generated at the slag flushing port, but does not consider smoke plume treatment and does not recover the exhaust steam of the slag flushing water tank; patent publication No. CN208667759U proposes a system for dedusting, dehydrating and eliminating white slag of a blast furnace granulated water slag tower, wherein the key technology adopts GGH to carry out heat exchange treatment on slag flushing steam before and after condensation treatment, but GGH equipment has a great risk of corrosion, and visual pollution cannot be thoroughly eliminated in winter; patent publication No. CN208883918U proposes a slag flushing water elimination and waste heat utilization system, and the key technology of the system carries out condensation treatment on dead steam generated by a slag flushing water pool, the treatment range is incomplete, and visual pollution cannot be thoroughly eliminated; patent publication No. CN209322919U proposes an environment-friendly white-eliminating treatment and waste heat utilization system for blast furnace slag, the key technology of the system is to use a heat exchanger and a spraying device in series to carry out condensation treatment on the waste steam of a slag flushing port and a slag flushing water tank, but the spraying system needs to supplement a large amount of new water, and the visual pollution cannot be thoroughly eliminated without a heating system; patent publication No. CN209348354U proposes a blast furnace slag flushing flue gas whitening integrated device, and the key technology of the device only mixes and heats slag flushing steam and cannot achieve the pollutant purification effect; patent publication No. CN209910414U proposes a de-whitening device, the key technology of which is to adopt a water cooler and an air cooler series connection mode to treat high-temperature and high-humidity flue gas or steam, and the problem of low heat exchange efficiency of the air cooler exists; patent publication No. CN210206387U proposes a self-heating flue gas white elimination device, the key technology of which adopts a white elimination tower to sequentially arrange a reheater and an air cooler from top to bottom, the flue gas cooling and reheating white elimination do not need extra heat, but the reheater has a serious risk of corrosion, the air cooler consumes a large amount of gas, and the pipeline arrangement is too complex; the publication number CN110819747A provides a blast furnace slag flushing steam elimination and waste heat recovery device, the key technology of which only carries out condensation treatment on dead steam generated at a slag flushing port, and the problems of incomplete treatment range, huge air condensation system, large air consumption and low heat source grade exist; the publication No. CN109457065A proposes a waste steam recovery system for slag flushing water of an iron-making blast furnace, and the key technology is that the waste steam condensation treatment of the slag flushing system is carried out by adopting the serial design of a spray device and a heat exchanger, the pollutant treatment effect is good, but circulating water used by the spray device and the heat exchanger is conveyed to a cooling tower to be directly cooled, and a large amount of low-temperature water resource energy waste is caused.
From the above analysis, although the prior art has provided methods for spent steam treatment and waste heat recovery of a blast furnace slag flushing system, various defects in different degrees and aspects still need to be improved, and a relatively complete, energy-saving, efficient, economic and reliable system for removing colored smoke plume of high-temperature water slag flushing steam is needed to be developed to meet the treatment requirements of the blast furnace slag flushing system.
Disclosure of Invention
The utility model aims at solving the problem among the prior art, provide a colored plume desorption system of high temperature water towards sediment steam, be applicable to the blast furnace towards the cinder notch, towards the comprehensive treatment that the sediment steam produced the region such as sediment pond, can make the blast furnace towards the sediment steam and obtain deep purification, reduce the emission of acidic pollutants such as hydrogen sulfide, sulfur dioxide, realize towards sediment steam waste heat recovery and utilize to greatly reduce towards sediment system water consumption.
In order to realize the aim, the utility model provides a high-temperature water-washed slag steam colored smoke plume removing system, which comprises an overhead granulating tower, a slag-washed water inlet, a high-temperature slag inlet, a spraying device, a condenser, a second demister, a mixed air heating area, a mixed air draught fan, a slag-washed water pool, a water quality regulating unit and a heat source unit which are arranged on a tower body of the overhead granulating tower from bottom to top in sequence, the spraying layer of the spraying device is not less than three layers, the water quality adjusting unit is connected with the spraying device, spraying water is provided for a spraying device through a spraying water pipeline E, the slag flushing water tank is connected with the bottom tower wall of the high-altitude granulation tower through a slag ditch A, the side wall of the top of the slag flushing water tank is connected with the tower wall of the high-altitude granulation tower through a steam reflux pipeline B, the heat source unit is connected with the tower wall of the high-altitude granulation tower through a heat source flue G, and the connection position is arranged at the bottom of the air mixing heating area.
Preferably, the water conditioning unit comprises a filter, a conditioning and precipitating water tank, a dosing device, a spray water pump and a water cooler, a liquid collecting device is arranged below the spraying device, the inlet of the filter is connected with the outlet of the liquid collecting device through a spraying water pipeline E, the outlet of the filter is connected with the inlet of the conditioning and precipitating water tank through a spray water pipeline E, the dosing device is connected with the top of the conditioning and precipitating water tank through an alkali agent pipeline C, the bottom of the quenching, tempering and precipitating water tank is connected with the slag flushing water tank through a condensed water recovery pipeline D, a movable sealing cover is arranged above the slag flushing water tank, the inlet of the spray water pump is connected with the lower part of the liquid level of the conditioning and precipitating water tank through a spray water pipeline E, the outlet of the spray water pump is connected with the hot medium inlet of the water cooler through the spray water pipeline E, and the outlet of the hot medium of the water cooler is connected with the spray water inlet of the spray device through a spray water pipeline E.
Preferably, the liquid collecting device is a liquid collecting tray, the outer diameter of the liquid collecting tray is smaller than the inner diameter of the tower body of the high-altitude granulation tower, a gap for upward migration of slag flushing steam is formed between the outer side of the liquid collecting tray and the inner wall of the tower body of the high-altitude granulation tower, a discharge pipe is arranged at the bottom of the liquid collecting tray, and an outlet of the discharge pipe is connected with the filter.
Preferably, a first demister is further arranged between the high-temperature slag inlet and the spraying device, the first demister is located above the joint of the steam return pipeline B and the high-altitude granulation tower, and the number of the first demister and the number of the second demister are not less than two.
Preferably, the system also comprises a first hygrothermograph, a second hygrothermograph and a third hygrothermograph, wherein the first hygrothermograph, the second hygrothermograph and the third hygrothermograph are used for monitoring the temperature of flushing slag steam in real time, the temperature of the flushing slag steam after condensation is corresponding to the reduction of 50% of the moisture content of the flushing slag steam, the first hygrothermograph is arranged between the first demister and the liquid collecting tray, the second hygrothermograph is arranged between the spraying device and the condenser, and the third hygrothermograph is arranged between the condenser and the second demister.
Preferably, the cooling system further comprises a cooling water pump and a blast furnace wall cooling water replenishing tank, wherein cold media of the condenser and the water cooler are blast furnace wall cooling water, cold media inlets of the condenser and the water cooler are sequentially connected with the cooling water pump and the blast furnace wall cooling water replenishing tank through a cooling water pipeline F, and cold media outlets are connected with a blast furnace wall cooling system through the cooling water pipeline F.
Preferably, the interlayer spacing of the spraying layers of the spraying device is 3-5 m, a plurality of nozzles are uniformly arranged on each spraying layer, and the nozzles on two adjacent spraying layers are arranged in a staggered manner.
Preferably, the water conditioning unit can further comprise a dosing device, a spray water pump and a slag flushing water supplementing tank, the slag flushing water supplementing tank is connected with a water inlet of the spray device through the spray water pump and provides spray water for the spray device, and the dosing device is connected with the top of the slag flushing water supplementing tank through an alkali agent pipeline C.
Preferably, the liquid collecting device can also be a steam-raising liquid collecting tray, the steam-raising liquid collecting tray comprises a central baffle tray and a lower tray, the outer ring of the lower tray is mounted on the inner wall of the tower body of the high-altitude granulation tower, the center of the lower tray is provided with an exhaust funnel extending upwards, the section of the exhaust funnel is in a truncated cone shape gradually decreasing from bottom to top, a steam exhaust channel for upward migration of slag flushing steam is arranged in the exhaust funnel, the central baffle tray is positioned right above the steam exhaust channel, the outer ring of the central baffle tray is provided with a flow guide edge extending downwards, and the outer diameter of the central baffle tray is larger than the outer diameter of the outlet end of the steam exhaust channel.
The utility model has the advantages that:
1. the utility model discloses a towards the complete governing system that cinder flushing steam produced the region to the blast furnace towards cinder notch, towards the cinder pond etc. overcome the incomplete defect of prior art treatment scope.
2. The utility model discloses a mode that spray set, condenser, muddy wind were reheated has both realized the degree of depth condensation of towards sediment steam and has administered, has realized the thorough elimination of coloured smoke feather again, has solved the environmental protection problem.
3. The utility model discloses a water quenching and tempering unit carries out alkali medicament quenching and tempering to the spray water, can effectively prevent the acid corrosion of pipeline to effectively promote the spray water to the improvement of acid pollutants such as hydrogen sulfide, sulfur dioxide, hydrogen chloride in towards the sediment steam, the pollutant abatement discharges, effectively collects the condensate water simultaneously, reduces towards sediment system water consumption.
4. The utility model utilizes the blast furnace wall cooling water as the cold medium of the water cooler and the condenser, and effectively recovers the low-grade waste heat of the slag flushing steam.
5. The utility model discloses make full use of blast furnace casting house environment dust pelletizing system exhaust hot flue gas, perhaps hot-blast furnace subassembly exhaust hot flue gas, as the reheat heat source of the slag flushing steam after the condensation, and the power is pulled out to the heat that can make full use of this heat source, and the reheating process is the energy consumption that does not newly increase.
The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.
Drawings
FIG. 1 is a system diagram of a system for removing colored smoke plume of steam generated by high-temperature water-washed slag in example 1.
FIG. 2 is a system diagram of a system for removing colored smoke plume of steam generated by high-temperature water-washed slag in example 2.
FIG. 3 is a system diagram of a system for removing colored plume of steam generated by flushing slag with high-temperature water in example 3.
In the figure: 1-an overhead granulating tower, 2-a slag flushing water inlet, 3-a high-temperature slag inlet, 41-a first demister, 42-a second demister, 51-a first hygrothermograph, 52-a second hygrothermograph, 53-a third hygrothermograph, 6-a liquid collecting tray, 61-a discharge pipe, 7-a spray device, 8-a condenser, 9-a mixed air heating area, 10-a mixed air draught fan, 11-a slag flushing water tank, 12-a movable sealing cover, 13-a water quality adjusting unit, 131-a filter, 132-a quality adjusting and settling water tank, 133-a medicine adding device, 134-a spray water pump, 135-a water cooler, 136-a slag flushing water replenishing tank, 14-a heat source unit, 15-a cooling water pump and 16-a blast furnace cooling water replenishing tank, 17-blast furnace wall cooling system, 18-steam-rising liquid collecting tray, 181-central baffle tray, 182-lower tray, 19-blower, 20-air inlet of hot blast furnace component;
a-slag ditch, B-steam reflux pipeline, C-alkali agent pipeline, D-condensed water recovery pipeline, E-spray water pipeline, F-cooling water pipeline, G-heat source flue and H-air pipeline.
Detailed Description
Example 1
Referring to fig. 1, the utility model relates to a high temperature water slag steam colored smoke plume removing system, which comprises an upper air granulation tower 1, a slag flushing water inlet 2, a high temperature slag inlet 3, a spraying device 7, a condenser 8, a second demister 42, a mixed air heating region 9, a mixed air induced draft fan 10, a slag flushing water pool 11, a water quality adjusting unit 13 and a heat source unit 14, wherein the slag flushing water pool 11, the water quality adjusting unit 13 and the spraying device 7 are arranged on the tower body of the upper air granulation tower 1 from bottom to top in sequence, the spraying layer of the spraying device 7 is not less than three layers, the water quality adjusting unit 13 is connected with the spraying device 7, spraying water is provided for the spraying device 7 through a spraying water pipeline E, the slag flushing water pool 11 is connected with the bottom tower wall of the upper air granulation tower 1 through a slag ditch A, the top side wall of the slag flushing water pool 11 is connected with the tower wall of the upper air granulation tower 1 through a steam backflow pipeline, the joint is arranged at the bottom of the mixed air heating area 9.
Further, the water quality adjusting unit 13 comprises a filter 131, a quality adjusting precipitation water tank 132, a dosing device 133, a spray water pump 134 and a water cooler 135, a liquid collecting device is arranged below the spray device 7, an inlet of the filter 131 is connected with an outlet of the liquid collecting device through a spray water pipeline E, an outlet of the filter 131 is connected with an inlet of the quality adjusting precipitation water tank 132 through a spray water pipeline E, the dosing device 133 is connected with the top of the quality adjusting precipitation water tank 132 through an alkali agent pipeline C, the bottom of the quality adjusting precipitation water tank 132 is connected with the slag flushing water tank 11 through a condensed water recovery pipeline D, a movable sealing cover 12 is arranged above the slag flushing water tank 11, an inlet of the spray water pump 134 is connected with the lower part of the liquid level of the quality adjusting precipitation water tank 132 through the spray water pipeline E, an outlet of the spray water pump 134 is connected with a hot medium, the outlet of the heat medium of the water cooler 135 is connected with the spray water inlet of the spray device 7 through a spray water pipeline E.
Further, the liquid collecting device is a liquid collecting tray 6, the outer diameter of the liquid collecting tray 6 is smaller than the inner diameter of the tower body of the high-altitude granulation tower 1, a gap for upward migration of slag flushing steam is formed between the outer side of the liquid collecting tray 6 and the inner wall of the tower body of the high-altitude granulation tower 1, a discharge pipe 61 is arranged at the bottom of the liquid collecting tray 6, and the outlet of the discharge pipe 61 is connected with the filter 131.
Further, a first demister 41 is arranged between the high-temperature slag inlet 3 and the spraying device 7, the first demister 41 is located above the joint of the steam return pipe B and the high-altitude granulation tower 1, the number of the first demister 41 and the number of the second demister 42 are not less than two, the first demister 41 and the second demister are ridge-type, and the layer spacing is not less than 1.5 m.
Further, still include first warm and humid acidimeter 51, second warm and humid acidimeter 52 and third warm and humid acidimeter 53 for real-time supervision dashes sediment steam temperature, the temperature that dashes sediment steam temperature after the condensation for reducing towards sediment steam moisture content 50% corresponds, first warm and humid acidimeter 51 sets up between first defroster 41 and collecting tray 6, second warm and humid acidimeter 52 sets up between spray set 7 and condenser 8, third warm and humid acidimeter 53 sets up between condenser 8 and second defroster 42.
The cooling system further comprises a cooling water pump 15 and a blast furnace wall cooling water replenishing tank 16, wherein cold media of the condenser 8 and the water cooler 135 are blast furnace wall cooling water, cold media inlets of the condenser 8 and the water cooler 135 are sequentially connected with the cooling water pump 15 and the blast furnace wall cooling water replenishing tank 16 through a cooling water pipeline F, and cold media outlets are connected with a blast furnace wall cooling system 17 through the cooling water pipeline F; the heat exchange tubes of the condenser 8 and the water cooler 135 are made of fluoroplastic materials, the tube diameter is 10-14 mm, the wall thickness is 0.8-1 mm, and the heat exchange tubes are arranged in a U shape.
Furthermore, the interlayer spacing of the spraying layers of the spraying device 7 is 3-5 m, a plurality of nozzles are uniformly arranged on each spraying layer, and the nozzles on two adjacent spraying layers are arranged in a staggered manner.
The removing method of the high-temperature water slag steam colored smoke plume removing system comprises the following steps:
s1, carrying out slag flushing operation on the high-temperature slag from the high-temperature slag inlet 3 and the slag flushing water from the slag flushing water inlet 2 at the bottom of the high-altitude granulation tower 1 to generate high-temperature slag flushing steam; the slag-water mixture is conveyed to a slag flushing water tank 11 through a slag ditch A, and high-temperature slag flushing steam generated in the slag flushing water tank 11 flows back to the bottom of the high-altitude granulation tower 1 through a steam backflow pipeline B under the sealing action of a movable sealing cover 12;
s2, transferring the high-temperature slag flushing steam generated at the bottom of the high-altitude granulation tower 1 upwards along the tower body of the high-altitude granulation tower 1, and carrying out primary demisting operation through the first demister 41;
s3, the high-temperature slag flushing steam passing through the first demister 41 continuously moves upwards along the tower body of the high-altitude granulation tower 1, primary condensation operation is carried out through the spraying device 7, and the spraying water and precipitated condensed water are collected in the liquid collecting tray 6;
s4, the slag flushing steam of the spraying device 7 continuously moves upwards along the tower body of the high-altitude granulation tower 1, secondary condensation operation is carried out through a condenser 8, and precipitated condensed water is collected in a liquid collecting tray 6;
s5, the condensed water and the spray water in the liquid collecting tray 6 enter the water conditioning unit 13 through a pipeline, pass through the filter 131 and then enter the conditioning precipitation water tank 132; the chemical adding device 133 inputs an alkali chemical into the quenching and tempering precipitation water tank 132 through an alkali chemical pipeline C to carry out quenching and tempering operation, so that the spray water is in alkalescence, and acid pollutants contained in the slag flushing steam can be removed more efficiently in the spraying and cooling process; the condensed water after the hardening and tempering is conveyed back to the slag flushing water pool 11 through a condensed water recovery pipeline D for water supplementing operation; the spray water after the tempering is subjected to waste heat recovery operation through a spray water pump 134 and a water cooler 135 in sequence through a spray water pipeline E and then is conveyed back to the spraying device 7 for recycling;
s6, cold medium inlets of the condenser 8 and the water cooler 135 are sequentially connected with the cooling water pump 15 and the blast furnace wall cooling water replenishing tank 16 through cooling water pipelines F, and outlets of the condenser 8 and the water cooler 135 are connected with the blast furnace wall cooling system 17 through the cooling water pipelines F, so that cooling water circulation is realized;
s7, transferring the low-temperature slag flushing steam passing through the condenser 8 upwards along the tower body of the high-altitude granulation tower 1, and performing secondary demisting operation through the second demister 42;
s8, the heat source from the heat source unit 14 enters the mixing and heating area 9 through the heat source flue G, and is uniformly mixed with the slag flushing steam passing through the second demister 42 to form unsaturated hot mixed gas; the mixed gas continuously moves upwards along the tower body of the high-altitude granulation tower 1 under the action of the mixed gas induced draft fan 10 and is discharged through the outlet of the high-altitude granulation tower 1, colored smoke plume elimination is realized, and the heat source unit 14 is a dust removal system of a blast furnace casting house or a hot blast stove component.
Example 2
Referring to fig. 2, the removing system of the present embodiment is modified based on embodiment 1 as follows:
first, the present embodiment eliminates the first demister 41, the first thermo-hygrometer 51, the drip tray 6, and the condensate recovery conduit D of embodiment 1;
second, the water conditioning unit 13 of the present embodiment replaces the water conditioning unit 13 of embodiment 1 with a chemical feeding device 133, a spray water pump 134, and a slag water replenishing tank 136.
Specifically, the water quality adjusting unit 13 includes a dosing device 133, a spray water pump 134 and a slag flushing water replenishing tank 136, the slag flushing water replenishing tank 136 is connected with the water inlet of the spray device 7 through the spray water pump 134 to provide spray water for the spray device 7, and the dosing device 133 is connected with the top of the slag flushing water replenishing tank 136 through an alkali agent pipeline C.
The system flow of this embodiment is as follows:
s1, carrying out slag flushing operation on the high-temperature slag from the high-temperature slag inlet 3 and the slag flushing water from the slag flushing water inlet 2 at the bottom of the high-altitude granulation tower 1 to generate high-temperature slag flushing steam; the slag-water mixture is conveyed to a slag flushing water tank 11 through a slag ditch A, and high-temperature slag flushing steam generated in the slag flushing water tank 11 flows back to the bottom of the high-altitude granulation tower 1 through a steam backflow pipeline B under the sealing action of a movable sealing cover 12;
s2, transferring high-temperature slag flushing steam generated at the bottom of the high-altitude granulation tower 1 upwards along the tower body of the high-altitude granulation tower 1, performing primary condensation operation through a spraying device 7, collecting spraying water and precipitated condensed water at the bottom of the high-altitude granulation tower 1, and conveying the sprayed water and the precipitated condensed water together with a slag-water mixture to a slag flushing water pool 11 through a slag-water ditch A; the slag flushing water replenishing tank 136 is connected with the spray water pump 134 and the water inlet of the spray device 7 through a spray water pipeline E to provide spray water for the spray device 7; the chemical adding device 133 is connected with the top of the slag flushing water supplementing water tank 136 through an alkali chemical pipeline C, and an alkali chemical is input into the slag flushing water supplementing water tank 136 to make spray water in alkalescence so as to remove acid pollutants contained in the slag flushing exhaust steam more efficiently in the spraying and cooling process;
s3, continuously moving slag flushing steam through the spraying device 7 upwards along the tower body of the high-altitude granulation tower 1, continuously performing secondary condensation operation through the condenser 8, collecting precipitated condensed water at the bottom of the high-altitude granulation tower 1, and conveying the condensed water and a slag-water mixture to the slag flushing water pool 11 through the slag water ditch A;
s4, the slag flushing steam passing through the condenser 8 continuously moves upwards along the tower body of the high-altitude granulation tower 1, and enters the mixing and heating area 9 after being demisted by the second demister 42;
s5, a cold medium inlet of the condenser 8 is sequentially connected with a cooling water pump 15 and a blast furnace wall cooling water replenishing tank 16 through a cooling water pipeline F, and an outlet is connected with a blast furnace wall cooling system 17 through the cooling water pipeline F to realize cooling water circulation;
s6, the heat source from the heat source unit 14 enters the mixing and heating area 9 through the heat source flue G, and is uniformly mixed with the slag flushing steam passing through the second demister 42 to form unsaturated hot mixed gas; the mixed gas continuously moves upwards along the tower body of the high-altitude granulation tower 1 under the action of the mixed gas induced draft fan 10 and is discharged through the outlet of the high-altitude granulation tower 1, so that colored smoke plume is eliminated.
Example 3
Referring to fig. 3, the removing system of the present embodiment is modified based on embodiment 1 as follows:
firstly, the spray water and condensed water collecting device in embodiment 1 is the liquid collecting tray 6, and the vapor lifting liquid collecting tray 18 is used for replacement in this embodiment;
specifically, the liquid collecting device is a steam-raising liquid collecting tray 18, the steam-raising liquid collecting tray 18 comprises a central baffle plate 181 and a lower tray 182, the outer ring of the lower tray 182 is mounted on the inner wall of the tower body of the high-altitude granulation tower 1, an exhaust funnel extending upwards is arranged at the center of the lower tray 182, the section of the exhaust funnel is in a circular truncated cone shape gradually decreasing from bottom to top, a steam exhaust channel for upward migration of flushing slag steam is arranged in the exhaust funnel, the central baffle plate 181 is positioned right above the steam exhaust channel, the outer ring of the central baffle plate 181 is provided with a flow guide edge extending downwards, and the outer diameter of the central baffle plate 181 is larger than the outer diameter of the outlet end of the steam exhaust channel.
Secondly, the cold mediums of the condenser 8 and the water cooler 135 in the embodiment 1 are blast furnace wall cooling water, and are sequentially connected with a cooling water pump 15 and a blast furnace wall cooling water replenishing tank 16 through a cooling water pipeline F, and cold medium outlets are connected with a blast furnace wall cooling system 17 through the cooling water pipeline F; the cold medium in the embodiment is replaced by low-temperature air, the cold medium inlets of the condenser 8 and the water cooler 135 are connected with the blower 19 through the air pipeline H, and the cold medium outlets are connected with the air inlet 20 of the hot blast stove assembly through the air pipeline H, so that the heat energy recovery is realized.
Thirdly, on the basis of the second step, the heat exchange tubes of the condenser 8 and the water cooler 135 in the embodiment 1 are made of fluoroplastic materials, the tube diameter is 10-14 mm, the wall thickness is 0.8-1 mm, and the heat exchange tubes are arranged in a U shape; the condenser 8 and the water cooler 135 in this embodiment can be replaced by various types: the heat exchange tube can be a metal finned tube, the tube diameter is not less than 38mm, the wall thickness is 3-5 mm, and the heat exchange tubes are arranged in a tube array manner; the heat exchange tube can be a titanium tube, the diameter of the tube is not less than 25mm, the wall thickness of the tube is 1-1.5 mm, and the heat exchange tubes are arranged in a tube type; or a fluoroplastic pipe with the pipe diameter not more than 50mm and the wall thickness of 1mm, and the heat exchange tubes are arranged in a tubular manner.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (9)
1. The utility model provides a colored plume desorption system of high temperature water flushing sediment steam which characterized in that: comprises an overhead granulating tower (1), a slag flushing water inlet (2), a high-temperature slag inlet (3), a spraying device (7), a condenser (8), a second demister (42), a mixed air heating area (9), a mixed air draught fan (10), a slag flushing water pool (11), a water quality adjusting unit (13) and a heat source unit (14), wherein the slag flushing water inlet, the high-temperature slag inlet, the spraying device, the condenser and the mixed air heating area are sequentially arranged on a tower body of the overhead granulating tower (1) from bottom to top, the spraying layer of the spraying device (7) is not less than three layers, the water quality adjusting unit (13) is connected with the spraying device (7), spraying water is provided for the spraying device (7) through a spraying water pipeline E, the slag flushing water pool (11) is connected with the bottom tower wall of the overhead granulating tower (1) through a slag water ditch A, the top side wall of the slag flushing water pool (11) is connected with the tower wall of the overhead granulating tower (1) through a steam backflow, the joint is arranged at the bottom of the mixed air heating area (9).
2. The system for removing the colored smoke plume of the steam with the high-temperature water slag as claimed in claim 1, wherein: the water quality adjusting unit (13) comprises a filter (131), a quality adjusting precipitation water tank (132), a dosing device (133), a spray water pump (134) and a water cooler (135), wherein a liquid collecting device is arranged below the spray device (7), the inlet of the filter (131) is connected with the outlet of the liquid collecting device through a spray water pipeline E, the outlet of the filter (131) is connected with the inlet of the quality adjusting precipitation water tank (132) through a spray water pipeline E, the dosing device (133) is connected with the top of the quality adjusting precipitation water tank (132) through an alkali agent pipeline C, the bottom of the quality adjusting precipitation water tank (132) is connected with the slag flushing water tank (11) through a condensed water recovery pipeline D, a movable sealing cover (12) is arranged above the slag flushing water tank (11), and the inlet of the spray water pump (134) is connected with the liquid level lower part of the quality adjusting precipitation water tank (132) through, the outlet of the spray water pump (134) is connected with the hot medium inlet of the water cooler (135) through a spray water pipeline E, and the hot medium outlet of the water cooler (135) is connected with the spray water inlet of the spray device (7) through the spray water pipeline E.
3. The system for removing the colored smoke plume of the steam with the high-temperature water slag as claimed in claim 2, wherein: the liquid collecting device is a liquid collecting tray (6), the outer diameter of the liquid collecting tray (6) is smaller than the inner diameter of the high-altitude granulation tower (1), a gap for upward migration of slag flushing steam is formed between the outer side of the liquid collecting tray (6) and the inner wall of the high-altitude granulation tower (1), a discharge pipe (61) is arranged at the bottom of the liquid collecting tray (6), and the outlet of the discharge pipe (61) is connected with the filter (131).
4. The system for removing the colored smoke plume of the steam with the high-temperature water slag as claimed in claim 3, wherein: a first demister (41) is further arranged between the high-temperature slag inlet (3) and the spraying device (7), the first demister (41) is located above the joint of the steam return pipeline B and the high-altitude granulation tower (1), and the number of the first demister (41) and the number of the second demister (42) are not less than two.
5. The system for removing the colored smoke plume of the steam with the high-temperature water slag as claimed in claim 4, wherein: still include first warm and humid acidimeter (51), second warm and humid acidimeter (52) and third warm and humid acidimeter (53) for real-time supervision dashes sediment steam temperature, first warm and humid acidimeter (51) sets up between first defroster (41) and collecting tray (6), second warm and humid acidimeter (52) set up between spray set (7) and condenser (8), third warm and humid acidimeter (53) set up between condenser (8) and second defroster (42).
6. The system for removing the colored smoke plume of the steam with the high-temperature water slag as claimed in claim 2, wherein: the cooling water system is characterized by further comprising a cooling water pump (15) and a blast furnace wall cooling water replenishing tank (16), wherein cold media of the condenser (8) and the water cooler (135) are blast furnace wall cooling water, cold media inlets of the condenser (8) and the water cooler (135) are sequentially connected with the cooling water pump (15) and the blast furnace wall cooling water replenishing tank (16) through a cooling water pipeline F, and cold media outlets are connected with a blast furnace wall cooling system (17) through the cooling water pipeline F.
7. The system for removing the colored smoke plume of the steam with the high-temperature water slag as claimed in claim 1, wherein: the interlayer spacing of the spraying layers of the spraying device (7) is 3-5 m, a plurality of nozzles are uniformly arranged on each spraying layer, and the nozzles on two adjacent spraying layers are arranged in a staggered mode.
8. The system for removing the colored smoke plume of the steam with the high-temperature water slag as claimed in claim 1, wherein: the water quality adjusting unit (13) comprises a dosing device (133), a spray water pump (134) and a slag flushing water supplementing tank (136), the slag flushing water supplementing tank (136) is connected with a water inlet of the spray device (7) through the spray water pump (134) to provide spray water for the spray device (7), and the dosing device (133) is connected with the top of the slag flushing water supplementing tank (136) through an alkali agent pipeline C.
9. The system for removing the colored smoke plume of the steam with the high-temperature water slag as claimed in claim 2, wherein: the liquid collecting device is a steam-raising liquid collecting tray (18), the steam-raising liquid collecting tray (18) comprises a central baffle tray (181) and a lower tray (182), the outer ring of the lower tray (182) is installed on the inner wall of the high-altitude granulation tower (1), an exhaust funnel extending upwards is arranged at the center of the lower tray (182), the section of the exhaust funnel is in a gradually-reduced circular table shape from bottom to top, a steam exhaust channel for flushing slag steam to migrate upwards is arranged in the exhaust funnel, the central baffle tray (181) is positioned right above the exhaust channel, the outer ring of the central baffle tray (181) is provided with a flow guide edge extending downwards, and the outer diameter of the central baffle tray (181) is larger than the outer diameter of the outlet end of the exhaust channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021597761.7U CN212818972U (en) | 2020-08-05 | 2020-08-05 | Colored smoke plume desorption system of high temperature water flushing sediment steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021597761.7U CN212818972U (en) | 2020-08-05 | 2020-08-05 | Colored smoke plume desorption system of high temperature water flushing sediment steam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212818972U true CN212818972U (en) | 2021-03-30 |
Family
ID=75128754
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021597761.7U Active CN212818972U (en) | 2020-08-05 | 2020-08-05 | Colored smoke plume desorption system of high temperature water flushing sediment steam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212818972U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864806A (en) * | 2021-09-30 | 2021-12-31 | 南京工业大学 | Cyclone type flue gas dedusting, demisting and white elimination integrated chimney and method |
-
2020
- 2020-08-05 CN CN202021597761.7U patent/CN212818972U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113864806A (en) * | 2021-09-30 | 2021-12-31 | 南京工业大学 | Cyclone type flue gas dedusting, demisting and white elimination integrated chimney and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112044222A (en) | System and method for removing colored smoke plume of high-temperature water-washed slag steam | |
| CN112044224A (en) | Deep treatment system and treatment method for high-temperature water-washed slag steam pollutants | |
| CN105862053B (en) | Hydrochloric acid exhausted liquid reclaiming process and system | |
| CN107198923A (en) | A kind of purification process technique of coke wet quenching steam | |
| CN206430578U (en) | A kind of vent gas treatment tower | |
| CN110141927B (en) | Blast furnace slag flushing steam whitening system and method based on waste heat utilization | |
| CN105536484B (en) | A kind of pollutant pre-corrosion tower based on flue gas condensing | |
| CN108554157A (en) | A kind of single column washing Wet fume sweetening dust remover of no stock tank secondary cycle | |
| CN109945677A (en) | A kind of efficient flue gas waste heat recovery tower with desulfurizing function | |
| CN102557318A (en) | Method and system for preparing soft water and utilizing afterheat by using spent steam obtained through ironmaking blast furnace slag washing | |
| CN210905523U (en) | Flue gas dehumidifying device | |
| CN112044223A (en) | High-temperature water slag flushing steam colored smoke plume treatment system and method | |
| CN212818972U (en) | Colored smoke plume desorption system of high temperature water flushing sediment steam | |
| CN212818973U (en) | Energy-saving water collection and pollutant treatment system for high-temperature water-washed slag exhaust steam | |
| CN109210956B (en) | Industrial furnace flue gas waste heat cascade condensation utilization and desulfurization and denitrification integrated system | |
| CN212651579U (en) | High-temperature water-washed slag steam pollutant deep treatment system | |
| CN110772915A (en) | Sintering flue gas SCR denitration and whitening system and process | |
| CN110093465B (en) | Blast furnace slag flushing steam whitening system and method | |
| CN203683571U (en) | Dry dedusting and energy-saving system | |
| CN110145945B (en) | Blast furnace slag flushing steam whitening system and method based on waste heat heating | |
| CN211084113U (en) | Energy-saving and water-saving smoke white-eliminating system | |
| CN108059963A (en) | A kind of energy conservation and environmental protection coking equipment | |
| CN212757900U (en) | Colored smoke plume governing system of high temperature water flushing sediment steam | |
| CN202610064U (en) | System for using waste steam of flushing cinder of ironmaking blast furnace to prepare soft water and utilizing waste heat | |
| CN111135698A (en) | Sintering flue gas desulfurization, white removal and denitration comprehensive treatment system and process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |