RU62341U1 - Dry Blast Furnace Drying Equipment - Google Patents

Dry Blast Furnace Drying Equipment Download PDF

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Publication number
RU62341U1
RU62341U1 RU2006113136/22U RU2006113136U RU62341U1 RU 62341 U1 RU62341 U1 RU 62341U1 RU 2006113136/22 U RU2006113136/22 U RU 2006113136/22U RU 2006113136 U RU2006113136 U RU 2006113136U RU 62341 U1 RU62341 U1 RU 62341U1
Authority
RU
Russia
Prior art keywords
equipment
air
heat exchanger
pipeline
blast furnace
Prior art date
Application number
RU2006113136/22U
Other languages
Russian (ru)
Inventor
Чаошенг Яо
Донгшенг Хуанг
Жонгде ИЙ
Жонгкуан ЛИЮ
Ганг КИАН
Ксинмин ВЕЙ
Original Assignee
Металлургикал дизайн институт оф Шандонг провинс
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to CN200420052933.7 priority Critical
Priority to CN2004200529337U priority patent/CN2719854Y/en
Application filed by Металлургикал дизайн институт оф Шандонг провинс filed Critical Металлургикал дизайн институт оф Шандонг провинс
Application granted granted Critical
Publication of RU62341U1 publication Critical patent/RU62341U1/en

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Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21BMANUFACTURE OF IRON OR STEEL
    • C21B7/00Blast furnaces
    • C21B7/22Dust arresters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42Auxiliary equipment or operation thereof
    • B01D46/4263Means for active heating or cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2273/00Operation of filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2273/20High temperature filtration

Abstract

The proposed utility model relates to equipment for dry purging blast furnaces equipped with a heat exchanger and consisting of equipment for coarse purging and thorough purging and pipeline valves. The model is also equipped with a connecting pipe with a blast furnace air heater and a boiler system, which helps prevent condensation when the purge air is supplied. To reduce the requirements for the manufacture of a heat exchanger, the pipeline is equipped with a mixing valve, when heating the air partially supplying atmospheric air, which allows not to exceed the temperature during heat transfer. Additionally, an inlet valve and a fan may be included to reduce the temperature of the purge air by supplying atmospheric air to the heat exchanger.

Description

Application area
The utility model relates to devices for dry purging blast furnaces equipped with a heat exchanger.
State of the art
Dry blasting devices for blast furnaces are currently necessary equipment that can bring significant social and economic benefits due to the possibility of saving water and energy. Typically, known dry blowing equipment consists of a gravity or vortex blowing machine for coarse blowing, a heat exchanger, a bag-shaped or electric blowing machine for thorough blowing, and a pipe valve. The heat exchanger in the known purge equipment, in case of exceeding the norm of decreasing the gas temperature, heats it to prevent condensation, while reducing the efficiency of the thorough purge machine, and in the case of an excess gas temperature increase, reduces its temperature, preventing the bag from burning or deformation of the electric purge machine, while reducing efficiency. The main disadvantage of the existing equipment is the special arrangement of the heat source, which increases the temperature of the purge gas, inevitably increasing the investment, functionality, security costs and energy costs. Taking into account that
This equipment is used exclusively during operation of the blast furnace, the probability of its use is very small, and investment is economically disadvantageous. However, it has to be used to ensure the smooth operation of the system, since such a method of dry purging compared with the use of equipment for wet purging is more profitable.
Utility Model Content
The purpose of this utility model is to create equipment for dry blowing a blast furnace with a heat exchanger that does not have a special heat source device.
The main essence of this model is the use of heat energy by the heat exchanger obtained from the air heating system of the blast furnace or from the smoke (gas) boiler system, i.e. in supplying said heat exchanger and air heating system of a blast furnace and / or gas boiler system with a connecting pipe. Such a pipeline, in addition to being connected to a gas boiler system, can also be a return outlet for the exhaust gas of an air heater; it can also be connected to the hot air pipe of the heater or to connect any two of the three above messages by controlling with a valve. Of course, you can combine all three messages with an increase in economic costs, which is usually the case. During heat exchange in a heat exchanger, the heat of hot air or high temperature gas is transferred to the purge air. To prevent excessive cooling of the gas or disruption of the normal operation of the heat source, the equipment is equipped with a burner, which, when producing high-temperature gas, enters the above pipeline and, by controlling the combustion temperature
maintaining the desired temperature of the gas supplied to the heat exchanger. When the heat source is hot air from the heater, to reduce the requirements for the manufacture of the heat exchanger, it is possible to install an air mixing valve in the hot air pipe, while the mixed air has atmospheric temperature, which allows you to maintain the desired temperature in the heat exchanger without overheating. In addition, when using hot air as a heat source, you need to pay attention to the fact that unused heat remains in the exhaust of the heat exchanger, which must be paid attention so that the air duct does not ignite. If you need to lower the temperature of the purge gas, you can use a fan to draw natural air into the heat exchanger and lower the temperature of the purge gas; Of course, the application of the water cooling method is not excluded here.
The advantages of this model are as follows:
the refusal to use special heat sources, which saves on investment and functional space, as well as on the costs of protection and energy; in conditions of minimal functional space, the advantages of this invention are especially obvious;
the possibility of additional use of the potential of the heater;
quick start, minimum time for slowing down the temperature, quick reaction.
Description of drawings
The claimed model is illustrated by four images, while in FIG. 1 to 3 are schematic views of variants of the claimed design, and FIG. 4 is a schematic
image of a heat-conducting pipe connected to two types of heat sources.
Figure 1 shows the equipment for dry blowing a blast furnace equipped with a heat exchanger, where item 1 denotes equipment for rough blowing with a dry method - this can be either gravitational or vortex blowing, 2 - a heat exchanger for dry blowing equipment, 3 - equipment for thorough purging by the dry method, it can be either a bag purge or an electric purge, 4 - a pipeline for supplying heat to the heat exchanger 2, 5 - a control valve of the pipeline 4, 6 and 7 - respectively, the inlet and outlet of the purge air udovaniya 1 and 3 dry purge, 8 and 9 - check valves the purge air flow direction of the machine, 10 - exit of exhaust air fed to the heat exchanger.
The design shown in figure 1 works as follows - after an alarm is issued by the dry purge equipment control system, the shut-off valve 9 immediately closes, valve 8 opens and, at the same time, valve 5, heat is supplied to the heat exchanger 2 through line 4 by using hot air or by increasing the gas pressure of the heater or boiler, while there is an increase in the heat of the purge air.
Figure 2 reflects one of the preferred uses of the structure of figure 1. For the heat exchanger 2 with the heat pipe 4, a burner 18 is additionally used. The high-temperature gas produced by the burner enters the pipe 4 and, by controlling the degree of combustion of the burner, maintain the required temperature of the air supplied to the heat exchanger. This method of installing the burner can be applied to any of the examples of the present invention, in addition to the fact that this can prevent malfunctions caused by the shutdown of the heat source,
it can also increase the temperature of the exhaust gas of the heater or boiler when it decreases.
Figure 3 also reflects one of the preferred uses of the structure of figure 1. The described construction further comprises a mixing valve 11, through which partially mixed cold air is supplied to the pipe 4. When using hot air supply, the highest temperature of the hot air supplied to the heat exchanger 2 is controlled, which should not exceed the set value, while avoiding a strong increase in the cost and requirements for the manufacture of the heat exchanger and its parts.
In addition, a cold air inlet with a valve 12 and a fan 14 with a valve 13 are added to this design, providing the need for cooling the purge air temperature. Thus, after the control system purge equipment alarm high temperature, through the opening valves 12, 13 closes the exhaust outlet 10 and starts the fan 14, while cooling the purge air. Adding a fan 14 also allows, when using gas from a heater or boiler gas to supply heat to a heat exchanger, to draw this gas by a fan without resorting specifically to increasing pressure.
Figure 4 presents a schematic drawing of a heat-conducting pipe connecting simultaneously two types of heat sources. The pipeline 4 has a small branching 17, one of which is connected to one heat source by means of valve 15, and the other by means of valve 16 - to another heat source. Thus, by opening and closing valves 15 and 16, air intake is controlled, which allows you to quickly (flexibly) select the source of hot air supply, thereby reducing the cost of adding parts.
Mode of application
The proposed model is recommended for use when blowing hot air - the advantage of its use is to reduce the size of the heat exchanger, as well as a significant reduction in capital investment. If the purge air temperature is too high, other methods can also be used, such as spraying water.

Claims (9)

1. Equipment for dry blasting of blast furnaces, equipped with a heat exchanger, consisting of coarse blowing equipment, a heat exchanger, a thorough blowdown equipment and pipeline valves, characterized in that the heat exchanger is connected to the blast furnace air heating system and / or gas boiler system via a pipeline.
2. The equipment according to claim 1, characterized in that the pipeline is connected to the heat conduit of the blast furnace.
3. The equipment according to claim 2, characterized in that the pipeline is equipped with a mixing valve.
4. The equipment according to claim 1, characterized in that the above pipeline and a wide passage of air of the air heater is equipped with a fan.
5. Equipment according to claim 1, characterized in that the above pipeline and a wide air passage of the boiler are equipped with a fan.
6. Equipment according to any one of claims 1 to 3, characterized in that it is additionally equipped with a natural air intake control valve and a fan.
7. Equipment according to any one of claims 4 or 5, characterized in that it is additionally equipped with a natural air intake control valve.
8. Equipment according to any one of claims 1 to 5, characterized in that the pipeline is branched and equipped with valves.
9. Equipment according to any one of claims 1 to 5, characterized in that the pipeline is equipped with a burner.
Figure 00000001
RU2006113136/22U 2004-08-16 2005-04-18 Dry Blast Furnace Drying Equipment RU62341U1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN200420052933.7 2004-08-16
CN2004200529337U CN2719854Y (en) 2004-08-16 2004-08-16 Dry dust-collecting device suitable for blast furnace with heat exchanger

Publications (1)

Publication Number Publication Date
RU62341U1 true RU62341U1 (en) 2007-04-10

Family

ID=35008816

Family Applications (1)

Application Number Title Priority Date Filing Date
RU2006113136/22U RU62341U1 (en) 2004-08-16 2005-04-18 Dry Blast Furnace Drying Equipment

Country Status (5)

Country Link
CN (1) CN2719854Y (en)
RU (1) RU62341U1 (en)
TR (1) TR200602139U1 (en)
UA (1) UA25271U (en)
WO (1) WO2006017965A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101561226B (en) * 2009-06-03 2011-02-16 段世荣 Energy-saving device manufactured by chemical material carrier
CN101890264A (en) * 2010-07-08 2010-11-24 大连海事大学 Anti-dewing and anti-icing safe heating system of bag type dust remover
CN102081396B (en) * 2010-12-31 2012-11-07 北京交通大学 Multi-sensor concentrated control method for full-automatic blast furnace dedusting fan control system
CN102721075B (en) * 2012-05-29 2015-06-03 中节能科技投资有限公司 Device and method for preheating interior of dust remover
CN102921244B (en) * 2012-11-07 2015-05-20 深圳市圳能热源技术有限公司 Bag-type dust remover special for coal water slurry
CN105498385A (en) * 2016-01-29 2016-04-20 中冶东方工程技术有限公司 Furnace gas dust remover for sealed electric furnace

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1391688A1 (en) * 1986-11-25 1988-04-30 Московский институт стали и сплавов Apparatus for cleaning gases from dust
CN1035831C (en) * 1994-11-18 1997-09-10 北京科技大学 Direct reduction process for oxygen-rich fusion gasifying furnace
JPH1143357A (en) * 1997-07-24 1999-02-16 Ishii Funsai Kikai Seisakusho:Kk Production of aggregate and production unit therefor
CN2334747Y (en) * 1998-01-07 1999-08-25 首钢总公司 Device for recovering carbon dioxide by dry process dust-removing
CN1123634C (en) * 2000-07-14 2003-10-08 攀枝花新钢钒股份有限公司动力厂 Dry-type process for dusting gas of blast furnace
CN2493240Y (en) * 2001-07-09 2002-05-29 蒂莫西M·霍尔马克 Multi-function sports training apparatus

Also Published As

Publication number Publication date
TR200602139U1 (en) 2007-11-21
UA25271U (en) 2007-08-10
WO2006017965A1 (en) 2006-02-23
CN2719854Y (en) 2005-08-24

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