CN201149423Y - Apparatus for purifying flue gas and reusing waste heat of alader electric furnace - Google Patents

Apparatus for purifying flue gas and reusing waste heat of alader electric furnace Download PDF

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Publication number
CN201149423Y
CN201149423Y CNU2007201874164U CN200720187416U CN201149423Y CN 201149423 Y CN201149423 Y CN 201149423Y CN U2007201874164 U CNU2007201874164 U CN U2007201874164U CN 200720187416 U CN200720187416 U CN 200720187416U CN 201149423 Y CN201149423 Y CN 201149423Y
Authority
CN
China
Prior art keywords
fume
flue
sack cleaner
drying kiln
electric furnace
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.)
Expired - Lifetime
Application number
CNU2007201874164U
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Chinese (zh)
Inventor
孙俊民
姚强
刘刚
曹慧芳
李四清
张战军
张晓云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TONGFANG ENVIRONMENT CO Ltd
Original Assignee
TONGFANG ENVIRONMENT CO Ltd
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
Application filed by TONGFANG ENVIRONMENT CO Ltd filed Critical TONGFANG ENVIRONMENT CO Ltd
Priority to CNU2007201874164U priority Critical patent/CN201149423Y/en
Application granted granted Critical
Publication of CN201149423Y publication Critical patent/CN201149423Y/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a device for fume cleaning and surplus heat utilization of a silicon-aluminum alloy electric furnace, belonging to the field of electric furnace fume cleaning. In the device, the fume inlet pipe of an air cooler is connected with an electric furnace fume discharge pipe, and the fume outlet pipe of the air cooler is connected with the fume inlet pipe of a bag-type dust collector. A mixing valve is arranged on the fume outlet pipe of the air cooler, and a temperature monitoring point is arranged at the fume inlet pipe of the bag-type dust collector. An inertia baffle plate is arranged in a fume connecting pipe of the air cooler and the bag-type dust collector, and a dust hopper is arranged below the inertia baffle plate. A dust spraying valve is arranged at the fume inlet pipe of the bag-type dust collector. The fume outlet pipe of the bag-type dust collector is divided into two fume paths, one fume path is connected with the fume inlet pipe of a drying kiln, and the fume outlet pipe of the drying kiln is converged with the other fume path of the bag-type dust collector and connected with a chimney via an induced draft fan. The device provided in the utility model has the advantages of low dust removal resistance, long bag service, high efficiency, low energy consumption, and reduced production cost.

Description

The device of a kind of silicon-aluminum alloy electric furnace gas cleaning and UTILIZATION OF VESIDUAL HEAT IN
Technical field
The utility model relates to the gas cleaning of electric furnace, particularly relates to the device of silicon-aluminum alloy electric furnace gas cleaning and UTILIZATION OF VESIDUAL HEAT IN.
Background technology
The main feature of iron alloy electric furnace flue dust is the flue-gas temperature height, the dust fine size, and what the use of iron alloy electric furnace gas cleaning at present was more is sack cleaner.Flue gas purifying technique commonly used is earlier by the cooling of U type pipe air cooler, through cyclone separator the carbon containing bulky grain is settled down then, so that silica flour recycles, sack cleaner has two kinds of positive-pressure type and negative pressure blowback wind systems.Gas cleaning for silicon-aluminum alloy electric furnace, prior art is prolonged the dust separation system of having used ferrosilicon furnace, not only the dedusting resistance is big for this process for purifying, because bituminous coal and petroleum coke have been adopted in the electric furnace reduction agent, make and contain sticky particle in the flue gas that the cloth bag that bonds easily reduces cloth bag service life, and flue gas heat do not obtain recycling, and causes energy waste.
Summary of the invention
At above-mentioned deficiency of the prior art, it is little that the purpose of this utility model provides a kind of dedusting resistance, and the cloth bag long service life is energy-efficient, is suitable for the gas cleaning of silicon-aluminum alloy electric furnace and the device of UTILIZATION OF VESIDUAL HEAT IN.
The technical solution of the utility model realizes as follows:
The device of a kind of silicon-aluminum alloy electric furnace gas cleaning and UTILIZATION OF VESIDUAL HEAT IN comprises aerial cooler, sack cleaner, drying kiln and air-introduced machine.The smoke intake pipeline of aerial cooler is connected with the electric furnace flue gas discharge tube, and the outlet flue of aerial cooler is connected with the inlet flue gas pipeline of sack cleaner.Going out of aerial cooler is equipped with mixer selector valve on the flue, the gas approach place of sack cleaner is equipped with the temperature monitoring point.Its design feature is that described aerial cooler is equipped with the inertia plate washer that can stop big dust particle with being connected of sack cleaner in the flue.The below of inertia plate washer is equipped with ash bucket, and the gas approach place of sack cleaner is equipped with ash-spraying valve.Sack cleaner the outlet flue be divided into two-way, wherein one road flue is connected with the gas approach of drying kiln, another road flue of the exhaust pass of drying kiln and sack cleaner converges through air-introduced machine and is connected with chimney, is equipped with mixer selector valve and temperature monitoring point on the drying kiln gas approach.
In said apparatus, be equipped with the bypath valve that by-pass line and control by-pass line are opened or closed between the inlet duct of described aerial cooler and the outlet conduit.
In said apparatus, described drying kiln is divided into three chambers, all is equipped with mixer selector valve and the temperature monitoring point that can independently control each each room temperature of drying kiln on the gas approach of its each chamber.
The utility model compared with prior art has the following advantages and good effect:
(1) before the gas approach of sack cleaner, uses the inertia baffle plate, big dust particle is settled down, and can reduce the running resistance of deduster.
(2) in addition, treat that at cloth the gas approach position of deduster sprays into flyash, make fly ash grain fully contact sticky particles in the flue gas, the effect that reaches collision, absorption and reunite makes it lose adhesiveness, and the protection cloth bag prolongs deduster service life.
(3) sack cleaner is exported flue gas and introduce drying kiln, the drying material pelletizing makes flue gas heat obtain recycling, and has realized energy-saving and cost-reducing.
Below in conjunction with the drawings and specific embodiments the utility model is described further.
Description of drawings
Accompanying drawing is the structure principle chart of the utility model device.
The specific embodiment
Referring to accompanying drawing, the utility model device comprises aerial cooler 1, sack cleaner 3, drying kiln 4 and air-introduced machine 5.The smoke intake pipeline of aerial cooler 1 is connected with the electric furnace flue gas discharge tube, and the outlet flue of aerial cooler 1 is connected with the inlet flue gas pipeline of sack cleaner 3.Going out of aerial cooler 1 is provided with mixer selector valve 7 on the flue, aerial cooler 1 is equipped with the inertia baffle plate 2 that can stop big dust particle with being connected of sack cleaner 3 in the flue, and the below of inertia baffle plate 2 is equipped with ash bucket 10.The gas approach place of sack cleaner 3 is equipped with ash-spraying valve 9, and is connected with its gas approach.The outlet flue of sack cleaner 3 divides two-way, wherein one road flue is divided into three branch roads and is connected respectively with three chamber inlet flues of drying kiln 4, and three chamber exhaust pass of drying kiln 4 and another way outlet flue of sack cleaner 3 converge through air-introduced machine 5 and be connected with chimney 6.Be equipped with the bypath valve 8 that by-pass line and control by-pass line are opened or closed between the inlet duct of aerial cooler 1 and the outlet conduit.The gas approach of sack cleaner 3 is provided with temperature monitoring point 11.Three chambers of drying kiln 4, each chamber inlet flue is provided with mixer selector valve 7 and temperature monitoring point 11 respectively.
When using the utility model, the hot flue gas of dust-laden that electric furnace is discharged is introduced into aerial cooler 1 cooling, and the flue gas after the cooling is by inertia baffle plate 2, and the big dust particle that settles down falls into ash bucket 10.Open ash-spraying valve 9 earlier before sack cleaner 3 operations, the amount that sprays into fly ash grain to its gas approach is 3~5mg/m 3Flue gas adsorbs the sticky dust in the flue gas, and the flue gas after the absorption enters sack cleaner 3 and carries out dedusting.The temperature of sack cleaner 3 inlets is controlled in 200 ℃, when the temperature that enters sack cleaner 3 surpasses design temperature, adjusts mixer selector valve 9 coolings that aerial cooler 1 outlet is provided with.One road flue gas of drawing from sack cleaner 3 outlet be divided into three the tunnel carry out adjustment by each mixer selector valve 7 respectively after, enter three chamber dried feed pelletizings of drying kiln 4 from top.Wherein the entrance flue gas temperature of first Room of drying kiln 4 is controlled between 50~80 ℃, and the entrance flue gas temperature of medial compartment is controlled between 120~160 ℃, and the entrance flue gas temperature of the 3rd Room is controlled between 30~50 ℃.Another road flue gas that waste gas that comes out from the bottom, three chambers of drying kiln 4 in pelletizing oven dry back and sack cleaner 3 come out converges through air-introduced machine 5 and enters chimney 6 dischargings.When the flue-gas temperature of coming out when electric furnace is low, open by-passing valve 8, make flue gas directly by the 2 pre-dedustings of inertia baffle plate.

Claims (3)

1, the device of a kind of silicon-aluminum alloy electric furnace gas cleaning and UTILIZATION OF VESIDUAL HEAT IN, comprise aerial cooler (1), sack cleaner (3), drying kiln (4) and air-introduced machine (5), the smoke intake pipeline of aerial cooler (1) is connected with the electric furnace flue gas discharge tube, the outlet flue of aerial cooler (1) is connected with the inlet flue gas pipeline of sack cleaner (3), aerial cooler (1) go out to be equipped with on the flue mixer selector valve (7), the gas approach place of sack cleaner (3) is equipped with temperature monitoring point (11), it is characterized in that, described aerial cooler (1) be equipped with the inertia plate washer (2) that can stop big dust particle being connected of sack cleaner (3) in the flue, the below of inertia plate washer (2) is equipped with ash bucket (10), the gas approach place of sack cleaner (3) is equipped with ash-spraying valve (9), sack cleaner (3) the outlet flue be divided into two-way, wherein one road flue is connected with the gas approach of drying kiln (4), another road flue of the exhaust pass of drying kiln (4) and sack cleaner (3) converges through air-introduced machine (5) and is connected with chimney (6), is equipped with mixer selector valve (7) and temperature monitoring point (11) on drying kiln (4) gas approach.
2, according to the described device of claim 1, it is characterized in that, be equipped with the bypath valve (8) that by-pass line and control by-pass line are opened or closed between the inlet duct of described aerial cooler (1) and the outlet conduit.
According to claim 1 or 2 described devices, it is characterized in that 3, described drying kiln (4) is divided into three chambers, all be equipped with mixer selector valve (7) and the temperature monitoring point (11) that independently to control each room temperature of each drying kiln (4) on the gas approach of its each chamber.
CNU2007201874164U 2007-12-24 2007-12-24 Apparatus for purifying flue gas and reusing waste heat of alader electric furnace Expired - Lifetime CN201149423Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNU2007201874164U CN201149423Y (en) 2007-12-24 2007-12-24 Apparatus for purifying flue gas and reusing waste heat of alader electric furnace

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CNU2007201874164U CN201149423Y (en) 2007-12-24 2007-12-24 Apparatus for purifying flue gas and reusing waste heat of alader electric furnace

Publications (1)

Publication Number Publication Date
CN201149423Y true CN201149423Y (en) 2008-11-12

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102287807A (en) * 2011-06-17 2011-12-21 江苏太湖锅炉股份有限公司 Smoke temperature regulating structure of high-temperature flue inlet
CN104006668A (en) * 2014-05-22 2014-08-27 江苏华德工业炉有限公司 Recyclable smoke dust recycling and purifying device of industrial furnace
CN104501570A (en) * 2014-12-17 2015-04-08 福建省永安林业(集团)股份有限公司 Dry kiln device
CN104501547A (en) * 2014-12-17 2015-04-08 福建省永安林业(集团)股份有限公司 Radiator and furnace gas hybrid application drying kiln system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102287807A (en) * 2011-06-17 2011-12-21 江苏太湖锅炉股份有限公司 Smoke temperature regulating structure of high-temperature flue inlet
CN102287807B (en) * 2011-06-17 2015-10-14 江苏太湖锅炉股份有限公司 The flue gas temperature regulation structure of high-temperature flue import
CN104006668A (en) * 2014-05-22 2014-08-27 江苏华德工业炉有限公司 Recyclable smoke dust recycling and purifying device of industrial furnace
CN104006668B (en) * 2014-05-22 2015-12-09 江苏华德工业炉有限公司 Industrial furnace recoverable version fume recovery purifier
CN104501570A (en) * 2014-12-17 2015-04-08 福建省永安林业(集团)股份有限公司 Dry kiln device
CN104501547A (en) * 2014-12-17 2015-04-08 福建省永安林业(集团)股份有限公司 Radiator and furnace gas hybrid application drying kiln system
CN104501547B (en) * 2014-12-17 2017-01-04 福建省永安林业(集团)股份有限公司 A kind of dry kiln system of radiator, furnace gas mixing application
CN104501570B (en) * 2014-12-17 2017-01-04 福建省永安林业(集团)股份有限公司 A kind of dry kiln device

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Granted publication date: 20081112